系统重构 #17

Merged
pg9nrcf7t merged 2 commits from a_branch into main 6 months ago

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# -*- coding: utf-8 -*-
# File: __init__.py (in command_center)
# Purpose: 将 command_center 目录标记为 Python 包。
# 指挥控制中心包

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## MAVLINK的数据库数据连接与处理
在上次的技术博客中我们谈到了mavlink的基本传输格式与基础应用然而真正想在软件中使用mavlink进行通信还有许多的困难需要解决其中一大问题就是如何连接调用数据库并在对其中数据内容进行转化处理。
### 一、mavlink与无人机的连接
该功能需要我们设计一个mavlink_handler模块负责建立和维护MAVLink连接处理MAVLink消息的发送和接收。
```
class MavlinkHandler:
def __init__(self, connection_string: str = "udp:127.0.0.1:14550"):
self.connection_string = connection_string
self.connection = None
def connect(self) -> bool:
"""建立MAVLink连接"""
try:
self.connection = mavutil.mavlink_connection(self.connection_string)
self.connection.wait_heartbeat()
print(f"MAVLink连接成功: {self.connection_string}")
return True
except Exception as e:
print(f"MAVLink连接失败: {str(e)}")
return False
```
可以看到在我们定义的类的初始化函数中我们声明了一串叫connection_string的字符串而该串就是主通信端与无人机端相连的关键它可以是无人机的IP地址也可以是一个蓝牙、串口具体连接方式需要根据无人机的类型和底层通信形式而决定在样例中通过该IP地址我们就能与无人机相连接以实现进一步的功能。
### 二、mavlink与数据库的连接
```
class DatabaseHandler:
#替换数据库账号密码
def __init__(self, host: str, user: str, password: str, database: str):
self.host = host
self.user = user
self.password = password
self.database = database
self.connection = None
def connect(self) -> bool:
"""连接到MySQL数据库"""
try:
self.connection = mysql.connector.connect(
host=self.host,
user=self.user,
password=self.password,
database=self.database
)
print(f"数据库连接成功: {self.database}")
return True
except Error as e:
print(f"数据库连接失败: {str(e)}")
return False
def disconnect(self):
"""断开数据库连接"""
if self.connection:
self.connection.close()
```
如上代码所示我们连接数据库的方式和一般的程序并无不同只需要通过mysql.connector库在初始化函数中正确输入自己的mysql账号密码与数据库建立连接即可。
而在数据库数据的处理问题上我们则是需要编写一个函数对从数据库中提取出的数据进行分解处理并将处理好的数据存放在我们设置的一个数据队列中随着每一次的队列处理循环将一条条数据通过mavlink发送出去。

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我会帮你实现通信模块。首先,我们需要创建通信模块的目录结构和相关文件。让我们先看看是否已经有相关的目录:
Ran tool
我们需要创建一个新的通信模块。我会创建以下文件:
1. `communication/` 目录
2. `mavlink_handler.py` - MAVLink通信处理
3. `database_handler.py` - 数据库操作
4. `message_queue.py` - 消息队列管理
5. `__init__.py` - 模块初始化文件
我已经完成了通信模块的实现,这个模块包含以下主要组件:
1. `MavlinkHandler` - MAVLink通信处理器
- 负责建立和维护MAVLink连接
- 处理MAVLink消息的发送和接收
- 支持消息回调注册
- 使用线程进行异步消息处理
2. `DatabaseHandler` - 数据库处理器:
- 负责MySQL数据库的连接和管理
- 提供数据库表的创建和管理
- 支持MAVLink消息的存储和查询
- 管理无人机状态信息的存储和更新
3. `MessageQueue` - 消息队列:
- 提供线程安全的消息队列实现
- 支持消息的异步处理
- 提供回调机制
- 包含消息时间戳
4. `CommunicationManager` - 通信管理器:
- 协调MAVLink和数据库组件
- 处理消息的路由和分发
- 管理无人机状态更新
- 提供统一的接口访问通信功能
要使用这个通信模块,你需要:
1. 安装必要的依赖:
```bash
pip install pymavlink mysql-connector-python
```
2. 配置数据库连接:
```python
db_config = {
'host': 'localhost',
'user': 'your_username',
'password': 'your_password',
'database': 'drone_control'
}
```
3. 初始化通信管理器:
```python
from command_center.communication import CommunicationManager
# 创建通信管理器实例
comm_manager = CommunicationManager(
mavlink_connection="udp:127.0.0.1:14550", # MAVLink连接字符串
db_config=db_config
)
# 启动通信管理器
if comm_manager.start():
print("通信管理器启动成功")
# 获取无人机状态
drone_status = comm_manager.get_drone_status("drone_1")
print(f"无人机状态: {drone_status}")
# 获取消息队列
message_queue = comm_manager.get_message_queue()
# 注册消息回调
def on_message():
msg = message_queue.get()
if msg:
print(f"收到消息: {msg}")
message_queue.register_callback(on_message)
```
这个通信模块提供了完整的MAVLink通信和数据库集成功能可以
1. 接收和处理MAVLink消息
2. 将消息存储到MySQL数据库
3. 实时更新无人机状态
4. 提供消息队列和回调机制
5. 支持多线程异步处理
你可以根据需要扩展这个模块,比如:
1. 添加更多的MAVLink消息处理
2. 实现更复杂的数据库查询
3. 添加消息过滤和转换功能
4. 实现消息重传机制
5. 添加错误处理和恢复机制
需要我详细解释某个部分或者添加其他功能吗?
我来详细描述一下当前通信模块的工作流程:
1. **初始化阶段**
- 创建 `CommunicationManager` 实例,传入 MAVLink 连接字符串和数据库配置
- 初始化三个核心组件:
- `MavlinkHandler`:负责 MAVLink 通信
- `DatabaseHandler`:负责数据库操作
- `MessageQueue`:负责消息队列管理
2. **启动阶段**(调用 `start()` 方法):
- 首先连接数据库
- 创建必要的数据库表(`mavlink_messages` 和 `drone_status`
- 建立 MAVLink 连接
- 注册三个关键消息的回调函数:
- `HEARTBEAT`:心跳消息
- `GLOBAL_POSITION_INT`:位置信息
- `SYS_STATUS`:系统状态
- 启动 MAVLink 消息接收线程
- 启动消息处理线程
3. **消息接收流程**
```
MAVLink设备 -> MavlinkHandler -> MessageQueue -> CommunicationManager -> DatabaseHandler
```
- `MavlinkHandler` 通过 `_receive_loop` 持续监听 MAVLink 消息
- 收到消息后,调用 `_handle_message` 处理
- 消息被放入 `MessageQueue` 队列
- 同时触发注册的回调函数
4. **消息处理流程**
```
MessageQueue -> CommunicationManager._process_messages -> 数据库存储/状态更新
```
- `CommunicationManager``_process_messages` 线程从队列获取消息
- 对消息进行分类处理:
- 保存到数据库的 `mavlink_messages`
- 根据消息类型更新 `drone_status`
- 位置消息:更新经纬度和高度
- 状态消息:更新电池电量和系统状态
5. **数据库操作**
- 所有 MAVLink 消息都被保存到 `mavlink_messages`
- 无人机状态信息被保存到 `drone_status`
- 支持按时间范围和消息类型查询历史消息
- 支持获取最新的无人机状态
6. **消息回调机制**
- 支持注册消息回调函数
- 当收到特定类型的消息时,自动触发对应的回调
- 回调函数可以处理消息并执行自定义逻辑
7. **错误处理**
- 连接失败时的重试机制
- 消息处理异常的错误捕获
- 数据库操作的异常处理和回滚
8. **停止流程**(调用 `stop()` 方法):
- 停止消息处理线程
- 停止 MAVLink 连接
- 断开数据库连接
- 清理资源
这个通信模块的设计特点:
1. **异步处理**:使用多线程实现消息的异步接收和处理
2. **数据持久化**:所有消息都被保存到数据库,便于后续分析
3. **状态管理**:实时维护无人机的最新状态
4. **可扩展性**:通过回调机制支持自定义消息处理
5. **错误恢复**:包含完整的错误处理机制
使用示例:
```python
# 初始化
comm_manager = CommunicationManager(
mavlink_connection="udp:127.0.0.1:14550",
db_config={
'host': 'localhost',
'user': 'root',
'password': 'password',
'database': 'drone_control'
}
)
# 启动通信
comm_manager.start()
# 获取无人机状态
drone_status = comm_manager.get_drone_status("drone_1")
# 注册消息回调
def on_message():
msg = comm_manager.get_message_queue().get()
if msg:
print(f"收到消息: {msg}")
comm_manager.get_message_queue().register_callback(on_message)
```
这个通信模块提供了一个完整的解决方案,可以:
1. 实时接收和处理 MAVLink 消息
2. 将消息持久化到数据库
3. 维护无人机的最新状态
4. 支持自定义消息处理
5. 提供错误恢复机制
让我详细解释一下与无人机建立连接的过程。在当前的实现中,连接建立主要发生在 `MavlinkHandler` 类中,通过 `connect()` 方法实现。让我们看看具体的连接流程:
1. **连接初始化**
```python
# 在 MavlinkHandler 类中
def __init__(self, connection_string: str = "udp:127.0.0.1:14550"):
self.connection_string = connection_string
self.connection = None
# ... 其他初始化代码
```
2. **建立连接**
```python
def connect(self) -> bool:
"""建立MAVLink连接"""
try:
# 创建MAVLink连接
self.connection = mavutil.mavlink_connection(self.connection_string)
# 等待心跳包,确认连接成功
self.connection.wait_heartbeat()
print(f"MAVLink连接成功: {self.connection_string}")
return True
except Exception as e:
print(f"MAVLink连接失败: {str(e)}")
return False
```
连接建立的关键点:
1. **连接字符串格式**
- 支持多种连接方式:
- UDP: `"udp:IP:PORT"` (例如: `"udp:127.0.0.1:14550"`)
- TCP: `"tcp:IP:PORT"`
- 串口: `"serial:PORT,BAUDRATE"` (例如: `"serial:/dev/ttyUSB0,57600"`)
- 蓝牙: `"bluetooth:ADDRESS"`
2. **连接验证**
- 通过 `wait_heartbeat()` 等待无人机发送心跳包
- 心跳包是MAVLink协议中的基础消息用于确认连接状态
- 如果在一定时间内没有收到心跳包,连接会失败
3. **连接状态管理**
- 连接成功后,`connection` 对象会被保存
- 用于后续的消息发送和接收
- 连接失败时会返回 `False`,上层可以处理错误
要使用这个连接功能,你需要:
1. **确定连接方式**
- 如果无人机使用地面站软件如QGroundControl通常使用UDP连接
- 如果直接连接飞控,可能需要使用串口连接
- 连接字符串需要根据实际情况配置
2. **配置连接参数**
```python
# UDP连接示例
mavlink_connection = "udp:127.0.0.1:14550" # 本地UDP连接
# 串口连接示例
mavlink_connection = "serial:/dev/ttyUSB0,57600" # Linux系统
# 或
mavlink_connection = "serial:COM3,57600" # Windows系统
```
3. **建立连接**
```python
# 创建通信管理器
comm_manager = CommunicationManager(
mavlink_connection="udp:127.0.0.1:14550", # 根据实际情况修改
db_config={
'host': 'localhost',
'user': 'root',
'password': 'password',
'database': 'drone_control'
}
)
# 启动连接
if comm_manager.start():
print("连接成功")
else:
print("连接失败,请检查连接参数")
```
4. **连接后的操作**
- 发送命令:使用 `send_message` 方法
- 接收消息:通过消息队列或回调函数
- 监控状态:通过数据库查询
5. **错误处理**
- 连接失败时会有错误提示
- 可以设置重试机制
- 可以添加连接状态监控
建议的连接使用流程:
1. **准备阶段**
```python
def setup_connection():
# 配置连接参数
connection_config = {
'mavlink': {
'type': 'udp', # 或 'serial', 'tcp' 等
'address': '127.0.0.1',
'port': 14550,
'baudrate': 57600 # 串口连接时需要
},
'database': {
'host': 'localhost',
'user': 'root',
'password': 'password',
'database': 'drone_control'
}
}
# 构建连接字符串
if connection_config['mavlink']['type'] == 'udp':
connection_string = f"udp:{connection_config['mavlink']['address']}:{connection_config['mavlink']['port']}"
elif connection_config['mavlink']['type'] == 'serial':
connection_string = f"serial:{connection_config['mavlink']['address']},{connection_config['mavlink']['baudrate']}"
return connection_string, connection_config['database']
```
2. **连接建立**
```python
def establish_connection():
connection_string, db_config = setup_connection()
# 创建通信管理器
comm_manager = CommunicationManager(connection_string, db_config)
# 尝试连接
max_retries = 3
retry_count = 0
while retry_count < max_retries:
if comm_manager.start():
print("连接成功")
return comm_manager
else:
retry_count += 1
print(f"连接失败,第{retry_count}次重试...")
time.sleep(2) # 等待2秒后重试
print("连接失败,达到最大重试次数")
return None
```
3. **连接监控**
```python
def monitor_connection(comm_manager):
def heartbeat_callback(msg):
print(f"收到心跳包: {msg.to_dict()}")
# 注册心跳回调
comm_manager.mavlink.register_callback('HEARTBEAT', heartbeat_callback)
# 定期检查连接状态
while True:
if not comm_manager.mavlink.connection:
print("连接断开,尝试重连...")
if not comm_manager.mavlink.connect():
print("重连失败")
break
time.sleep(1)
```
这个连接模块提供了灵活的连接方式,可以根据不同的无人机和飞控配置选择合适的连接参数。同时,它也包含了错误处理和重试机制,确保连接的可靠性。
需要注意的是:
1. 确保无人机和地面站软件如QGroundControl使用相同的端口
2. 串口连接时需要正确的端口号和波特率
3. 防火墙设置可能会影响UDP/TCP连接
4. 建议在连接前先测试基本的MAVLink通信
你可以根据实际需求调整连接参数和错误处理策略。需要我详细解释某个部分吗?
MAVLink 消息的格式是标准化的二进制协议格式。让我详细解释一下 MAVLink 消息的格式和结构:
1. **MAVLink 消息基本结构**
```
+-------------------+------------------+------------------+------------------+------------------+
| 起始标记 (0xFE) | 载荷长度 (1字节) | 序列号 (1字节) | 系统ID (1字节) | 组件ID (1字节) |
+-------------------+------------------+------------------+------------------+------------------+
| 消息ID (1字节) | 载荷数据 (N字节) | CRC校验 (2字节) |
+-------------------+------------------+------------------+
```
2. **消息字段说明**
- **起始标记 (0xFE)**:标识消息开始
- **载荷长度**消息载荷的长度不包括头部和CRC
- **序列号**:用于检测消息丢失
- **系统ID**发送系统的ID如无人机ID
- **组件ID**发送组件的ID如飞控、相机等
- **消息ID**:标识消息类型
- **载荷数据**:实际的消息内容
- **CRC校验**:用于验证消息完整性
3. **常见消息类型**
```python
# 心跳消息 (HEARTBEAT)
{
'type': 'HEARTBEAT',
'system_status': 0, # 系统状态
'base_mode': 0, # 基础模式
'custom_mode': 0, # 自定义模式
'mavlink_version': 3 # MAVLink版本
}
# 位置消息 (GLOBAL_POSITION_INT)
{
'type': 'GLOBAL_POSITION_INT',
'time_boot_ms': 0, # 启动时间
'lat': 0, # 纬度 (度 * 1e7)
'lon': 0, # 经度 (度 * 1e7)
'alt': 0, # 高度 (毫米)
'relative_alt': 0, # 相对高度 (毫米)
'vx': 0, # X方向速度 (厘米/秒)
'vy': 0, # Y方向速度 (厘米/秒)
'vz': 0, # Z方向速度 (厘米/秒)
'hdg': 0 # 航向 (度 * 100)
}
# 系统状态消息 (SYS_STATUS)
{
'type': 'SYS_STATUS',
'onboard_control_sensors_present': 0, # 存在的传感器
'onboard_control_sensors_enabled': 0, # 启用的传感器
'onboard_control_sensors_health': 0, # 传感器健康状态
'load': 0, # 处理器负载
'voltage_battery': 0, # 电池电压
'current_battery': 0, # 电池电流
'battery_remaining': 0, # 剩余电量百分比
'drop_rate_comm': 0, # 通信丢包率
'errors_comm': 0, # 通信错误
'errors_count1': 0, # 错误计数1
'errors_count2': 0, # 错误计数2
'errors_count3': 0, # 错误计数3
'errors_count4': 0 # 错误计数4
}
```
4. **消息处理示例**
```python
# 在 MavlinkHandler 类中处理消息
def _handle_message(self, msg):
"""处理接收到的MAVLink消息"""
msg_type = msg.get_type()
msg_data = msg.to_dict()
# 根据消息类型处理
if msg_type == 'HEARTBEAT':
self._handle_heartbeat(msg_data)
elif msg_type == 'GLOBAL_POSITION_INT':
self._handle_position(msg_data)
elif msg_type == 'SYS_STATUS':
self._handle_system_status(msg_data)
# 将消息放入队列
self.message_queue.put({
'type': msg_type,
'data': msg_data,
'timestamp': datetime.now()
})
```
5. **消息发送示例**
```python
# 发送命令消息
def send_command(self, command_type: str, **kwargs):
"""发送MAVLink命令"""
try:
# 构建命令消息
msg = self.connection.mav.command_long_send(
self.connection.target_system, # 目标系统ID
self.connection.target_component, # 目标组件ID
command_type, # 命令类型
0, # 确认
*kwargs.values() # 命令参数
)
return True
except Exception as e:
print(f"发送命令失败: {str(e)}")
return False
```
6. **消息转换和存储**
```python
# 在 DatabaseHandler 中存储消息
def save_mavlink_message(self, msg_type: str, msg_data: Dict) -> bool:
"""保存MAVLink消息到数据库"""
query = """
INSERT INTO mavlink_messages
(message_type, message_data, timestamp)
VALUES (%s, %s, %s)
"""
params = (
msg_type,
json.dumps(msg_data), # 将消息数据转换为JSON格式存储
datetime.now()
)
return self.execute_update(query, params)
```
7. **消息查询示例**
```python
# 查询特定类型的消息
def get_messages_by_type(self, msg_type: str,
start_time: Optional[datetime] = None,
end_time: Optional[datetime] = None) -> List[Dict]:
"""获取特定类型的MAVLink消息"""
query = """
SELECT * FROM mavlink_messages
WHERE message_type = %s
"""
params = [msg_type]
if start_time:
query += " AND timestamp >= %s"
params.append(start_time)
if end_time:
query += " AND timestamp <= %s"
params.append(end_time)
query += " ORDER BY timestamp DESC"
return self.execute_query(query, tuple(params))
```
MAVLink 消息的特点:
1. **二进制格式**:高效的数据传输
2. **固定头部**:便于消息识别和解析
3. **可变载荷**:支持不同类型的数据
4. **CRC校验**:确保数据完整性
5. **系统/组件ID**:支持多设备通信
6. **序列号**:支持消息顺序和丢失检测
在实际使用中,我们不需要直接处理二进制格式,因为 pymavlink 库已经帮我们处理了消息的编码和解码。我们只需要关注消息的内容和类型即可。
需要我详细解释某个具体的消息类型或处理过程吗?

@ -1,17 +0,0 @@
# -*- coding: utf-8 -*-
# File: __init__.py (in communication)
# Purpose: 将 communication 目录标记为 Python 包,并可能导出其中的类。
from .mavlink_handler import MavlinkHandler
from .database_handler import DatabaseHandler
from .message_queue import MessageQueue
from .drone_connection_manager import DroneConnectionManager
from .communication_manager import CommunicationManager
__all__ = [
'MavlinkHandler',
'DatabaseHandler',
'MessageQueue',
'DroneConnectionManager',
'CommunicationManager'
]

@ -1,177 +0,0 @@
# -*- coding: utf-8 -*-
# File: communication_manager.py
# Purpose: 核心通信管理器,处理与后端、数据库和无人机的通信。
# 管理连接、消息分发和回调注册。
import json
import time
from threading import Thread, Lock
from typing import Dict, List, Callable, Optional, Any
from .mavlink_handler import MavlinkHandler
from .database_handler import DatabaseHandler
from .message_queue import MessageQueue
from .drone_connection_manager import DroneConnectionManager
class CommunicationManager:
def __init__(self, mavlink_connection: str, db_config: Dict[str, str]):
self.mavlink = MavlinkHandler(mavlink_connection)
self.database = DatabaseHandler(
host=db_config['host'],
user=db_config['user'],
password=db_config['password'],
database=db_config['database']
)
self.drone_manager = DroneConnectionManager(self.database)
self.drones: Dict[str, dict] = {} # 存储无人机信息
self.callbacks: Dict[str, List[Callable]] = {} # 存储回调函数
self.running = False
self.lock = Lock()
self.update_thread = None
self.message_queue = MessageQueue()
def start(self) -> bool:
"""启动通信管理器"""
if not self.database.connect():
return False
# 创建数据库表
self.database.create_tables()
# 启动MAVLink连接
if not self.mavlink.connect():
return False
# 注册MAVLink消息回调
self.mavlink.register_callback('HEARTBEAT', self._handle_heartbeat)
self.mavlink.register_callback('GLOBAL_POSITION_INT', self._handle_position)
self.mavlink.register_callback('SYS_STATUS', self._handle_system_status)
# 启动MAVLink消息接收
self.mavlink.start()
# 启动无人机连接管理器
self.drone_manager.start()
# 启动消息处理线程
self.running = True
self.update_thread = Thread(target=self._update_loop)
self.update_thread.daemon = True
self.update_thread.start()
return True
def stop(self):
"""停止通信管理器"""
self.running = False
if self.update_thread:
self.update_thread.join()
self.mavlink.stop()
self.drone_manager.stop()
self.database.disconnect()
def register_callback(self, event: str, callback: Callable):
"""注册回调函数"""
if event not in self.callbacks:
self.callbacks[event] = []
self.callbacks[event].append(callback)
def _update_loop(self):
"""更新循环"""
while self.running:
try:
self._update_drone_status()
time.sleep(0.1) # 100ms更新间隔
except Exception as e:
print(f"更新循环错误: {str(e)}")
def _update_drone_status(self):
"""更新无人机状态"""
# TODO: 实现实际的通信逻辑
# 这里模拟一些数据更新
with self.lock:
for drone_id in self.drones:
self.drones[drone_id].update({
"battery": max(0, self.drones[drone_id].get("battery", 100) - 0.1),
"signal_strength": max(0, self.drones[drone_id].get("signal_strength", 100) - 0.2),
"latency": self.drones[drone_id].get("latency", 0) + 1
})
def add_drone(self, drone_id: str, info: dict):
"""添加无人机"""
with self.lock:
self.drones[drone_id] = info
self._notify("drone_added", drone_id)
def remove_drone(self, drone_id: str):
"""移除无人机"""
with self.lock:
if drone_id in self.drones:
del self.drones[drone_id]
self._notify("drone_removed", drone_id)
def update_drone(self, drone_id: str, info: dict):
"""更新无人机信息"""
with self.lock:
if drone_id in self.drones:
self.drones[drone_id].update(info)
self._notify("drone_updated", drone_id)
def get_drone(self, drone_id: str) -> dict:
"""获取无人机信息"""
with self.lock:
return self.drones.get(drone_id, {})
def get_all_drones(self) -> List[dict]:
"""获取所有无人机信息"""
with self.lock:
return list(self.drones.values())
def send_command(self, drone_id: str, command: str, params: dict = None):
"""发送控制命令"""
# TODO: 实现实际的命令发送逻辑
print(f"发送命令到无人机 {drone_id}: {command} {params}")
self._notify("command_sent", drone_id, {"command": command, "params": params})
def _notify(self, event: str, drone_id: str, data: dict = None):
"""通知事件"""
if event in self.callbacks:
for callback in self.callbacks[event]:
try:
callback(drone_id, data)
except Exception as e:
print(f"回调函数执行错误: {str(e)}")
def _handle_heartbeat(self, msg):
"""处理心跳消息"""
self.message_queue.put({
'type': 'HEARTBEAT',
'data': msg.to_dict()
})
def _handle_position(self, msg):
"""处理位置消息"""
self.message_queue.put({
'type': 'POSITION',
'data': msg.to_dict()
})
def _handle_system_status(self, msg):
"""处理系统状态消息"""
self.message_queue.put({
'type': 'SYSTEM_STATUS',
'data': msg.to_dict()
})
def get_drone_status(self, drone_id: str) -> Optional[Dict[str, Any]]:
"""获取指定无人机的状态"""
query = """
SELECT * FROM drone_status
WHERE drone_id = %s
ORDER BY timestamp DESC LIMIT 1
"""
result = self.database.execute_query(query, (drone_id,))
return result[0] if result else None
def get_message_queue(self) -> MessageQueue:
"""获取消息队列"""
return self.message_queue

@ -1,192 +0,0 @@
# -*- coding: utf-8 -*-
# File: database_handler.py
# Purpose: 处理与数据库的交互,包括连接、数据读写(如用户信息、无人机数据、任务记录等)。
import mysql.connector
from mysql.connector import Error
from typing import Dict, List, Any, Optional
import json
from datetime import datetime
class DatabaseHandler:
#替换数据库账号密码
def __init__(self, host: str, user: str, password: str, database: str):
self.host = host
self.user = user
self.password = password
self.database = database
self.connection = None
self.cursor = None
def connect(self) -> bool:
"""连接到MySQL数据库"""
try:
self.connection = mysql.connector.connect(
host=self.host,
user=self.user,
password=self.password,
database=self.database
)
self.cursor = self.connection.cursor(dictionary=True)
print(f"数据库连接成功: {self.database}")
return True
except Error as e:
print(f"数据库连接失败: {str(e)}")
return False
def disconnect(self):
"""断开数据库连接"""
if self.cursor:
self.cursor.close()
if self.connection:
self.connection.close()
def execute_query(self, query: str, params: Optional[tuple] = None) -> List[Dict]:
"""执行查询并返回结果"""
try:
self.cursor.execute(query, params)
return self.cursor.fetchall()
except Error as e:
print(f"查询执行失败: {str(e)}")
return []
def execute_update(self, query: str, params: Optional[tuple] = None) -> bool:
"""执行更新操作"""
try:
self.cursor.execute(query, params)
self.connection.commit()
return True
except Error as e:
print(f"更新执行失败: {str(e)}")
self.connection.rollback()
return False
def save_mavlink_message(self, msg_type: str, msg_data: Dict) -> bool:
"""保存MAVLink消息到数据库"""
query = """
INSERT INTO mavlink_messages
(message_type, message_data, timestamp)
VALUES (%s, %s, %s)
"""
params = (
msg_type,
json.dumps(msg_data),
datetime.now()
)
return self.execute_update(query, params)
def get_mavlink_messages(self, msg_type: Optional[str] = None,
start_time: Optional[datetime] = None,
end_time: Optional[datetime] = None) -> List[Dict]:
"""获取MAVLink消息"""
query = "SELECT * FROM mavlink_messages WHERE 1=1"
params = []
if msg_type:
query += " AND message_type = %s"
params.append(msg_type)
if start_time:
query += " AND timestamp >= %s"
params.append(start_time)
if end_time:
query += " AND timestamp <= %s"
params.append(end_time)
query += " ORDER BY timestamp DESC"
return self.execute_query(query, tuple(params) if params else None)
def create_tables(self):
"""创建必要的数据库表"""
queries = [
"""
CREATE TABLE IF NOT EXISTS mavlink_messages (
id INT AUTO_INCREMENT PRIMARY KEY,
message_type VARCHAR(50) NOT NULL,
message_data JSON NOT NULL,
timestamp DATETIME NOT NULL,
INDEX idx_message_type (message_type),
INDEX idx_timestamp (timestamp)
)
""",
"""
CREATE TABLE IF NOT EXISTS drone_status (
id INT AUTO_INCREMENT PRIMARY KEY,
drone_id VARCHAR(50) NOT NULL,
latitude FLOAT,
longitude FLOAT,
altitude FLOAT,
battery_level FLOAT,
status VARCHAR(50),
timestamp DATETIME NOT NULL,
INDEX idx_drone_id (drone_id),
INDEX idx_timestamp (timestamp)
)
""",
"""
CREATE TABLE IF NOT EXISTS drone_connections (
id INT AUTO_INCREMENT PRIMARY KEY,
drone_id VARCHAR(50) NOT NULL UNIQUE,
ip_address VARCHAR(50) NOT NULL,
port INT NOT NULL,
connection_type VARCHAR(20) NOT NULL,
is_active BOOLEAN DEFAULT TRUE,
last_connected DATETIME,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
INDEX idx_drone_id (drone_id),
INDEX idx_is_active (is_active)
)
"""
]
for query in queries:
try:
self.cursor.execute(query)
self.connection.commit()
except Error as e:
print(f"创建表失败: {str(e)}")
self.connection.rollback()
def get_all_active_drones(self) -> List[Dict[str, Any]]:
"""获取所有活跃的无人机连接信息"""
query = """
SELECT * FROM drone_connections
WHERE is_active = TRUE
"""
return self.execute_query(query)
def get_drone_connection(self, drone_id: str) -> Optional[Dict[str, Any]]:
"""获取指定无人机的连接信息"""
query = """
SELECT * FROM drone_connections
WHERE drone_id = %s AND is_active = TRUE
"""
result = self.execute_query(query, (drone_id,))
return result[0] if result else None
def update_drone_connection_status(self, drone_id: str, is_active: bool) -> bool:
"""更新无人机连接状态"""
query = """
UPDATE drone_connections
SET is_active = %s, last_connected = %s
WHERE drone_id = %s
"""
params = (is_active, datetime.now(), drone_id)
return self.execute_update(query, params)
def add_drone_connection(self, drone_id: str, ip_address: str, port: int,
connection_type: str = 'udp') -> bool:
"""添加新的无人机连接信息"""
query = """
INSERT INTO drone_connections
(drone_id, ip_address, port, connection_type)
VALUES (%s, %s, %s, %s)
ON DUPLICATE KEY UPDATE
ip_address = VALUES(ip_address),
port = VALUES(port),
connection_type = VALUES(connection_type),
is_active = TRUE,
updated_at = CURRENT_TIMESTAMP
"""
params = (drone_id, ip_address, port, connection_type)
return self.execute_update(query, params)

@ -1,150 +0,0 @@
# -*- coding: utf-8 -*-
# File: drone_connection_manager.py
# Purpose: 管理与单个或多个无人机的直接连接(可能通过 MAVLink 或其他协议)。
# 处理心跳、连接状态和底层数据收发。
from typing import Dict, List, Optional
from .mavlink_handler import MavlinkHandler
from .database_handler import DatabaseHandler
import threading
import time
from datetime import datetime, timedelta
import socket
class DroneConnectionManager:
def __init__(self, db_handler: DatabaseHandler):
self.db_handler = db_handler
self.drone_handlers: Dict[str, MavlinkHandler] = {}
self.last_heartbeat: Dict[str, datetime] = {}
self.is_running = False
self.monitor_thread = None
self.TIMEOUT_SECONDS = 60 # 1分钟超时
def start(self):
"""启动连接管理器"""
if not self.is_running:
self.is_running = True
self.monitor_thread = threading.Thread(target=self._monitor_connections)
self.monitor_thread.daemon = True
self.monitor_thread.start()
# 连接所有活跃的无人机
self._connect_all_active_drones()
return True
return False
def stop(self):
"""停止连接管理器"""
self.is_running = False
if self.monitor_thread:
self.monitor_thread.join()
self._disconnect_all_drones()
def _connect_all_active_drones(self):
"""连接所有活跃的无人机"""
active_drones = self.db_handler.get_all_active_drones()
for drone in active_drones:
self.connect_drone(drone['drone_id'], drone['ip_address'], drone['port'])
def _disconnect_all_drones(self):
"""断开所有无人机的连接"""
for drone_id in list(self.drone_handlers.keys()):
self.disconnect_drone(drone_id)
def connect_drone(self, drone_id: str, ip: str, port: int) -> bool:
"""连接到指定无人机"""
try:
if drone_id in self.drone_handlers:
return True
handler = MavlinkHandler(f"udp:{ip}:{port}")
if handler.connect():
self.drone_handlers[drone_id] = handler
self.last_heartbeat[drone_id] = datetime.now()
self.db_handler.update_drone_connection_status(drone_id, "connected")
# 启动消息接收线程
handler.start()
print(f"成功连接到无人机 {drone_id}")
return True
return False
except Exception as e:
print(f"连接无人机 {drone_id} 失败: {str(e)}")
self.db_handler.update_drone_connection_status(drone_id, "disconnected")
return False
def disconnect_drone(self, drone_id: str):
"""断开与指定无人机的连接"""
if drone_id in self.drone_handlers:
try:
handler = self.drone_handlers[drone_id]
handler.stop() # 停止消息接收线程
handler.disconnect()
del self.drone_handlers[drone_id]
if drone_id in self.last_heartbeat:
del self.last_heartbeat[drone_id]
self.db_handler.update_drone_connection_status(drone_id, "disconnected")
print(f"已断开与无人机 {drone_id} 的连接")
except Exception as e:
print(f"断开无人机 {drone_id} 连接失败: {str(e)}")
def _monitor_connections(self):
"""监控所有无人机连接状态"""
while self.is_running:
try:
current_time = datetime.now()
for drone_id, handler in list(self.drone_handlers.items()):
# 检查最后心跳时间
if drone_id in self.last_heartbeat:
time_since_last_heartbeat = (current_time - self.last_heartbeat[drone_id]).total_seconds()
if time_since_last_heartbeat > self.TIMEOUT_SECONDS:
print(f"无人机 {drone_id} 通信超时")
self.db_handler.update_drone_connection_status(drone_id, "disconnected")
self.disconnect_drone(drone_id)
continue
# 检查是否有新的心跳消息
try:
msg = handler.receive_message()
if msg and msg.get_type() == 'HEARTBEAT':
self.last_heartbeat[drone_id] = current_time
self.db_handler.update_drone_connection_status(drone_id, "connected")
except Exception as e:
print(f"接收无人机 {drone_id} 消息失败: {str(e)}")
self.db_handler.update_drone_connection_status(drone_id, "disconnected")
self.disconnect_drone(drone_id)
# 检查是否有新的活跃无人机需要连接
active_drones = self.db_handler.get_all_active_drones()
for drone in active_drones:
if drone['drone_id'] not in self.drone_handlers:
print(f"发现新的活跃无人机 {drone['drone_id']},尝试连接")
self.connect_drone(drone['drone_id'], drone['ip_address'], drone['port'])
except Exception as e:
print(f"监控连接状态时发生错误: {str(e)}")
time.sleep(1) # 每秒检查一次
def get_drone_handler(self, drone_id: str) -> Optional[MavlinkHandler]:
"""获取指定无人机的处理器"""
return self.drone_handlers.get(drone_id)
def get_connected_drones(self) -> List[str]:
"""获取所有已连接的无人机ID"""
return list(self.drone_handlers.keys())
def is_drone_connected(self, drone_id: str) -> bool:
"""检查指定无人机是否已连接"""
return drone_id in self.drone_handlers
def send_command(self, drone_id: str, command: str, params: dict = None) -> bool:
"""向指定无人机发送命令"""
handler = self.get_drone_handler(drone_id)
if handler:
try:
handler.send_command(command, params)
return True
except Exception as e:
print(f"发送命令到无人机 {drone_id} 失败: {str(e)}")
self.db_handler.update_drone_connection_status(drone_id, "disconnected")
self.disconnect_drone(drone_id)
return False

@ -1,85 +0,0 @@
# -*- coding: utf-8 -*-
# File: mavlink_handler.py
# Purpose: 处理 MAVLink 协议的编码、解码和消息处理。
import pymavlink.mavutil as mavutil
import threading
import time
from typing import Callable, Dict, Any
from .message_queue import MessageQueue
class MavlinkHandler:
def __init__(self, connection_string: str = "udp:127.0.0.1:14550"):
self.connection_string = connection_string
self.connection = None
self.message_queue = MessageQueue()
self.running = False
self.thread = None
self.callbacks: Dict[str, Callable] = {}
def connect(self) -> bool:
"""建立MAVLink连接"""
try:
self.connection = mavutil.mavlink_connection(self.connection_string)#连接无人机的IP地址、蓝牙、串口等
self.connection.wait_heartbeat()
print(f"MAVLink连接成功: {self.connection_string}")
return True
except Exception as e:
print(f"MAVLink连接失败: {str(e)}")
return False
def start(self):
"""启动MAVLink消息接收线程"""
if not self.connection:
if not self.connect():
return
self.running = True
self.thread = threading.Thread(target=self._receive_loop)
self.thread.daemon = True
self.thread.start()
def stop(self):
"""停止MAVLink消息接收"""
self.running = False
if self.thread:
self.thread.join()
if self.connection:
self.connection.close()
def _receive_loop(self):
"""MAVLink消息接收循环"""
while self.running:
try:
msg = self.connection.recv_match(blocking=True, timeout=1.0)
if msg:
self._handle_message(msg)
except Exception as e:
print(f"接收消息错误: {str(e)}")
time.sleep(1)
def _handle_message(self, msg):
"""处理接收到的MAVLink消息"""
msg_type = msg.get_type()
if msg_type in self.callbacks:
self.callbacks[msg_type](msg)
self.message_queue.put(msg)
def register_callback(self, msg_type: str, callback: Callable):
"""注册消息回调函数"""
self.callbacks[msg_type] = callback
def send_message(self, msg_type: str, **kwargs):
"""发送MAVLink消息"""
if not self.connection:
return False
try:
self.connection.mav.send(mavutil.mavlink.MAVLink_message_type_map[msg_type](**kwargs))
return True
except Exception as e:
print(f"发送消息失败: {str(e)}")
return False
def get_message_queue(self) -> MessageQueue:
"""获取消息队列"""
return self.message_queue

@ -1,69 +0,0 @@
# -*- coding: utf-8 -*-
# File: message_queue.py
# Purpose: 提供线程安全的消息队列,用于模块间的异步通信。
import queue
import threading
from typing import Any, Optional
from datetime import datetime
class MessageQueue:
def __init__(self, maxsize: int = 1000):
self.queue = queue.Queue(maxsize=maxsize)
self.lock = threading.Lock()
self.callbacks = []
def put(self, message: Any):
"""将消息放入队列"""
with self.lock:
try:
self.queue.put_nowait({
'message': message,
'timestamp': datetime.now()
})
self._notify_callbacks()
except queue.Full:
print("消息队列已满,丢弃消息")
def get(self, block: bool = True, timeout: Optional[float] = None) -> Optional[dict]:
"""从队列中获取消息"""
try:
return self.queue.get(block=block, timeout=timeout)
except queue.Empty:
return None
def register_callback(self, callback: callable):
"""注册消息回调函数"""
with self.lock:
self.callbacks.append(callback)
def unregister_callback(self, callback: callable):
"""注销消息回调函数"""
with self.lock:
if callback in self.callbacks:
self.callbacks.remove(callback)
def _notify_callbacks(self):
"""通知所有注册的回调函数"""
for callback in self.callbacks:
try:
callback()
except Exception as e:
print(f"回调函数执行失败: {str(e)}")
def clear(self):
"""清空消息队列"""
with self.lock:
while not self.queue.empty():
try:
self.queue.get_nowait()
except queue.Empty:
break
def size(self) -> int:
"""获取队列大小"""
return self.queue.qsize()
def is_empty(self) -> bool:
"""检查队列是否为空"""
return self.queue.empty()

@ -1,271 +0,0 @@
import mysql.connector
from mysql.connector import Error
import json
import os
from PyQt5.QtGui import QColor
def load_db_config():
# 获取当前文件的目录
current_dir = os.path.dirname(os.path.abspath(__file__))
# 构建配置文件的完整路径
config_path = os.path.join(current_dir, 'db_config.json')
with open(config_path, 'r') as config_file:
config = json.load(config_file)
return config
def create_connection():
"""进行数据库连接"""
connection = None
try:
config = load_db_config()
connection = mysql.connector.connect(
host=config['host'], # 数据库主机地址
user=config['user'], # 数据库用户名
password=config['password'], # 数据库密码
database=config['database'] # 数据库名称
)
if connection.is_connected():
print("Connected to MySQL database")
except Error as e:
print(f"Error: '{e}' occurred")
return connection
def close_connection(connection):
"""关闭连接"""
if connection.is_connected():
connection.close()
print("MySQL connection is closed")
def query_user(username, password):
"""查询用户信息"""
connection = create_connection()
user_exists = False
try:
if connection.is_connected():
cursor = connection.cursor(dictionary=True)
query = "SELECT * FROM users WHERE username = %s AND password = %s"
cursor.execute(query, (username, password))
result = cursor.fetchone()
if result:
user_exists = True
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
return user_exists
def register_user(username, password):
"""注册新用户"""
connection = create_connection()
success = False
try:
if connection.is_connected():
cursor = connection.cursor()
query = "INSERT INTO users (username, password) VALUES (%s, %s)"
cursor.execute(query, (username, password))
connection.commit()
success = True
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
return success
def save_danger_zone(area):
"""保存危险区域到数据库,避免重复"""
if danger_zone_exists(area):
print("危险区域已存在,跳过存储。")
return False
connection = create_connection()
success = False
try:
if connection.is_connected():
cursor = connection.cursor(dictionary=True)
# 标准化坐标
if area['type'] == 'circle':
coordinates = json.dumps({
'center': [round(c, 6) for c in area.get('center', (0, 0))],
'radius': round(area.get('radius', 50), 2)
})
elif area['type'] == 'rectangle':
coordinates = json.dumps({
'rect': [round(r, 6) for r in area.get('rect', (0, 0, 100, 100))]
})
elif area['type'] == 'polygon':
coordinates = json.dumps({
'points': [[round(p[0], 6), round(p[1], 6)] for p in area.get('points', [])]
})
else:
return False
# 检查是否已存在
check_query = """
SELECT id FROM danger_zones WHERE type = %s AND coordinates = %s
"""
cursor.execute(check_query, (area['type'], coordinates))
result = cursor.fetchone()
if result:
print("Danger zone already exists in the database.")
return False
# 插入新记录
insert_query = """
INSERT INTO danger_zones (type, coordinates, color)
VALUES (%s, %s, %s)
"""
color = area['color'].name() # 假设QColor对象
cursor.execute(insert_query, (area['type'], coordinates, color))
connection.commit()
success = True
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
return success
def load_danger_zones():
"""从数据库加载危险区域信息"""
connection = create_connection()
danger_zones = []
try:
if connection.is_connected():
cursor = connection.cursor(dictionary=True)
query = "SELECT type, coordinates, color FROM danger_zones"
cursor.execute(query)
results = cursor.fetchall()
for row in results:
coordinates = json.loads(row['coordinates'])
if row['type'] == 'circle':
zone = {
'type': row['type'],
'center': coordinates['center'],
'radius': coordinates['radius'],
'color': QColor(row['color'])
}
elif row['type'] == 'rectangle':
zone = {
'type': row['type'],
'rect': coordinates['rect'],
'color': QColor(row['color'])
}
elif row['type'] == 'polygon':
zone = {
'type': row['type'],
'points': coordinates['points'],
'color': QColor(row['color'])
}
danger_zones.append(zone)
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
return danger_zones
def clear_danger_zones():
"""删除数据库中的所有危险区域数据"""
connection = create_connection()
print("clear_danger_zones called")
try:
if connection.is_connected():
cursor = connection.cursor()
query = "DELETE FROM danger_zones"
cursor.execute(query)
connection.commit()
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
def save_path(drone_id, path):
"""保存路径信息到数据库"""
connection = create_connection()
success = False
print("save_path called")
try:
if connection.is_connected():
cursor = connection.cursor()
query = """
INSERT INTO paths (drone_id, path)
VALUES (%s, %s)
"""
path_str = json.dumps(path) # 将路径转换为JSON字符串
cursor.execute(query, (drone_id, path_str))
connection.commit()
success = True
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
return success
def clear_paths(drone_id):
"""删除数据库中与特定无人机ID相关的路径数据"""
connection = create_connection()
try:
if connection.is_connected():
cursor = connection.cursor()
query = "DELETE FROM paths WHERE drone_id = %s"
cursor.execute(query, (drone_id,))
connection.commit()
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
def danger_zone_exists(area):
"""检查数据库中是否存在相同的危险区域"""
connection = create_connection()
exists = False
try:
if connection.is_connected():
cursor = connection.cursor(dictionary=True)
# 标准化坐标
if area['type'] == 'circle':
coordinates = json.dumps({
'center': [round(c, 6) for c in area.get('center', (0, 0))],
'radius': round(area.get('radius', 50), 2)
})
elif area['type'] == 'rectangle':
coordinates = json.dumps({
'rect': [round(r, 6) for r in area.get('rect', (0, 0, 100, 100))]
})
elif area['type'] == 'polygon':
coordinates = json.dumps({
'points': [[round(p[0], 6), round(p[1], 6)] for p in area.get('points', [])]
})
else:
return False
# 检查是否已存在
check_query = """
SELECT id FROM danger_zones WHERE type = %s AND coordinates = %s
"""
cursor.execute(check_query, (area['type'], coordinates))
result = cursor.fetchone()
print(result)
exists = result is not None
print(exists)
cursor.close()
except Error as e:
print(f"Error: '{e}' occurred")
finally:
if connection.is_connected():
close_connection(connection)
return exists

@ -1,6 +0,0 @@
{
"host": "localhost",
"user": "root",
"password": "227622",
"database": "unv"
}

@ -1,17 +0,0 @@
CREATE TABLE IF NOT EXISTS users (
id INT AUTO_INCREMENT PRIMARY KEY,
username VARCHAR(255) NOT NULL UNIQUE,
password VARCHAR(255) NOT NULL
);
CREATE TABLE IF NOT EXISTS danger_zones (
id INT AUTO_INCREMENT PRIMARY KEY,
type VARCHAR(50) NOT NULL,
coordinates JSON NOT NULL,
color VARCHAR(20) NOT NULL
);
CREATE TABLE IF NOT EXISTS paths (
id INT AUTO_INCREMENT PRIMARY KEY,
drone_id VARCHAR(50) NOT NULL,
path JSON NOT NULL
);

@ -1,217 +0,0 @@
# -*- coding: utf-8 -*-
# File: main.py
# Purpose: 主应用程序入口点,定义和启动指挥控制中心主窗口 (CommandCenterApp)。
# 负责初始化UI、处理登录、创建数据模型和协调各个功能模块。
import sys
import traceback
from PyQt5.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout,
QHBoxLayout, QTabWidget, QPushButton, QLabel,
QGroupBox, QComboBox, QSpinBox, QDoubleSpinBox,
QProgressBar, QCheckBox, QMessageBox, QFileDialog,
QStatusBar, QStackedWidget)
from PyQt5.QtCore import Qt, pyqtSignal, QThread, QObject
from PyQt5.QtGui import QFont, QPixmap, QPainter, QPen, QColor
from ui.login_view import LoginView
from ui.drone_list_view import DroneListView
from ui.drone_detail_view import DroneDetailView
from ui.status_dashboard import StatusDashboard
from ui.base_map_view import BaseMapView
from ui.map_data_model import MapDataModel
from ui.integrated_map_view import IntegratedMapView
from ui.drone_management import DroneManagementWindow
class PathPlanningThread(QThread):
path_planned = pyqtSignal(list) # 规划完成后发出新路径
def __init__(self, simulator, drone_id, goal):
super().__init__()
self.simulator = simulator
self.drone_id = drone_id
self.goal = goal
self._running = True
self._replan_requested = False
def run(self):
while self._running:
if self._replan_requested:
self._replan_requested = False
path = self.simulator.path_planner.plan_path(
self.drone_id,
self.simulator.drones[self.drone_id]['position'],
self.goal
)
if path:
self.path_planned.emit(path)
self.msleep(100) # 避免CPU占用过高
def request_replan(self, goal=None):
if goal is not None:
self.goal = goal
self._replan_requested = True
def stop(self):
self._running = False
self.wait()
class CommandCenterApp(QMainWindow):
# 定义信号
login_successful = pyqtSignal()
def __init__(self):
super().__init__()
self.comm_manager = None
self.init_ui()
def init_ui(self):
# 设置窗口标题和大小
self.setWindowTitle("无人机后勤输送系统 - 指挥控制中心")
self.setMinimumSize(1200, 800)
# 创建主窗口部件
central_widget = QWidget()
self.setCentralWidget(central_widget)
# 创建主布局
main_layout = QVBoxLayout(central_widget)
main_layout.setContentsMargins(0, 0, 0, 0)
# 创建堆叠部件用于切换界面
self.stacked_widget = QStackedWidget()
main_layout.addWidget(self.stacked_widget)
# 创建无人机管理界面
self.drone_management = DroneManagementWindow()
self.drone_management.switch_to_map_view.connect(self.switch_to_map_view)
self.stacked_widget.addWidget(self.drone_management)
# 创建地图数据模型和集成地图视图
self.map_data_model = self.drone_management.map_data_model
# 创建地图界面容器
map_container = QWidget()
map_layout = QVBoxLayout(map_container)
map_layout.setContentsMargins(0, 0, 0, 0)
# 创建顶部工具栏
top_toolbar = QHBoxLayout()
top_toolbar.setContentsMargins(10, 5, 10, 5)
back_btn = QPushButton("返回无人机管理")
back_btn.clicked.connect(self.switch_to_drone_management)
title_label = QLabel("无人机路径规划")
title_label.setAlignment(Qt.AlignCenter)
title_font = QFont()
title_font.setPointSize(14)
title_font.setBold(True)
title_label.setFont(title_font)
# 添加到顶部工具栏
top_toolbar.addWidget(back_btn)
top_toolbar.addStretch()
top_toolbar.addWidget(title_label)
top_toolbar.addStretch()
top_toolbar.addStretch() # 为了平衡布局
# 创建集成地图视图
self.integrated_map_view = IntegratedMapView(self.map_data_model, self.drone_management.drone_manager)
# 添加到地图容器
map_layout.addLayout(top_toolbar)
map_layout.addWidget(self.integrated_map_view)
# 添加到堆叠部件
self.stacked_widget.addWidget(map_container)
# 创建状态栏
self.statusBar = QStatusBar()
self.setStatusBar(self.statusBar)
# 连接登录成功信号
self.login_successful.connect(self.on_login_successful)
# 默认显示无人机管理界面
self.stacked_widget.setCurrentIndex(0)
# 显示登录窗口
self.show_login()
def switch_to_map_view(self):
"""切换到地图视图"""
# 切换到地图视图前刷新无人机列表
self.integrated_map_view.refresh_drone_list()
self.stacked_widget.setCurrentIndex(1)
def switch_to_drone_management(self):
"""切换到无人机管理视图"""
self.stacked_widget.setCurrentIndex(0)
def show_login(self):
self.login_view = LoginView()
self.login_view.login_successful.connect(self.on_login_successful)
self.login_view.show()
def on_login_successful(self):
"""登录成功后的处理"""
# 初始化通信管理器
self.init_communication()
# 显示主窗口
self.show()
# 关闭登录窗口
self.login_view.close()
def init_communication(self):
"""初始化通信管理器"""
try:
# 暂时跳过数据库连接和通信管理器的初始化
print("通信管理器初始化已跳过")
except Exception as e:
QMessageBox.critical(self, "错误", f"初始化通信失败: {str(e)}")
def closeEvent(self, event):
"""关闭窗口时的处理"""
if self.comm_manager:
self.comm_manager.stop()
event.accept()
# 全局异常处理器
def exception_hook(exctype, value, tb):
"""全局异常捕获防止PyQt应用崩溃"""
error_msg = ''.join(traceback.format_exception(exctype, value, tb))
print(error_msg) # 打印到控制台
# 显示错误对话框
error_box = QMessageBox()
error_box.setIcon(QMessageBox.Critical)
error_box.setWindowTitle("应用程序错误")
error_box.setText("程序遇到了一个错误并无法继续。")
error_box.setInformativeText("详细错误信息:")
error_box.setDetailedText(error_msg)
error_box.setStandardButtons(QMessageBox.Ok)
error_box.exec_()
# 调用原始的异常处理器
sys.__excepthook__(exctype, value, tb)
if __name__ == '__main__':
# 设置全局异常钩子
sys.excepthook = exception_hook
app = QApplication(sys.argv)
# 设置应用程序样式
app.setStyle('Fusion')
try:
window = CommandCenterApp()
sys.exit(app.exec_())
except Exception as e:
# 捕获主应用程序初始化过程中的任何错误
print(f"初始化失败: {str(e)}")
traceback.print_exc()
QMessageBox.critical(None, "启动错误", f"应用程序启动失败: {str(e)}")
sys.exit(1)

@ -0,0 +1,16 @@
#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
case `uname` in
*CYGWIN*|*MINGW*|*MSYS*)
if command -v cygpath > /dev/null 2>&1; then
basedir=`cygpath -w "$basedir"`
fi
;;
esac
if [ -x "$basedir/node" ]; then
exec "$basedir/node" "$basedir/../nodemon/bin/nodemon.js" "$@"
else
exec node "$basedir/../nodemon/bin/nodemon.js" "$@"
fi

@ -0,0 +1,17 @@
@ECHO off
GOTO start
:find_dp0
SET dp0=%~dp0
EXIT /b
:start
SETLOCAL
CALL :find_dp0
IF EXIST "%dp0%\node.exe" (
SET "_prog=%dp0%\node.exe"
) ELSE (
SET "_prog=node"
SET PATHEXT=%PATHEXT:;.JS;=;%
)
endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%" "%dp0%\..\nodemon\bin\nodemon.js" %*

@ -0,0 +1,28 @@
#!/usr/bin/env pwsh
$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
$exe=""
if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
# Fix case when both the Windows and Linux builds of Node
# are installed in the same directory
$exe=".exe"
}
$ret=0
if (Test-Path "$basedir/node$exe") {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "$basedir/node$exe" "$basedir/../nodemon/bin/nodemon.js" $args
} else {
& "$basedir/node$exe" "$basedir/../nodemon/bin/nodemon.js" $args
}
$ret=$LASTEXITCODE
} else {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "node$exe" "$basedir/../nodemon/bin/nodemon.js" $args
} else {
& "node$exe" "$basedir/../nodemon/bin/nodemon.js" $args
}
$ret=$LASTEXITCODE
}
exit $ret

@ -0,0 +1,16 @@
#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
case `uname` in
*CYGWIN*|*MINGW*|*MSYS*)
if command -v cygpath > /dev/null 2>&1; then
basedir=`cygpath -w "$basedir"`
fi
;;
esac
if [ -x "$basedir/node" ]; then
exec "$basedir/node" "$basedir/../touch/bin/nodetouch.js" "$@"
else
exec node "$basedir/../touch/bin/nodetouch.js" "$@"
fi

@ -0,0 +1,17 @@
@ECHO off
GOTO start
:find_dp0
SET dp0=%~dp0
EXIT /b
:start
SETLOCAL
CALL :find_dp0
IF EXIST "%dp0%\node.exe" (
SET "_prog=%dp0%\node.exe"
) ELSE (
SET "_prog=node"
SET PATHEXT=%PATHEXT:;.JS;=;%
)
endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%" "%dp0%\..\touch\bin\nodetouch.js" %*

@ -0,0 +1,28 @@
#!/usr/bin/env pwsh
$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
$exe=""
if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
# Fix case when both the Windows and Linux builds of Node
# are installed in the same directory
$exe=".exe"
}
$ret=0
if (Test-Path "$basedir/node$exe") {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "$basedir/node$exe" "$basedir/../touch/bin/nodetouch.js" $args
} else {
& "$basedir/node$exe" "$basedir/../touch/bin/nodetouch.js" $args
}
$ret=$LASTEXITCODE
} else {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "node$exe" "$basedir/../touch/bin/nodetouch.js" $args
} else {
& "node$exe" "$basedir/../touch/bin/nodetouch.js" $args
}
$ret=$LASTEXITCODE
}
exit $ret

@ -0,0 +1,16 @@
#!/bin/sh
basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
case `uname` in
*CYGWIN*|*MINGW*|*MSYS*)
if command -v cygpath > /dev/null 2>&1; then
basedir=`cygpath -w "$basedir"`
fi
;;
esac
if [ -x "$basedir/node" ]; then
exec "$basedir/node" "$basedir/../semver/bin/semver.js" "$@"
else
exec node "$basedir/../semver/bin/semver.js" "$@"
fi

@ -0,0 +1,17 @@
@ECHO off
GOTO start
:find_dp0
SET dp0=%~dp0
EXIT /b
:start
SETLOCAL
CALL :find_dp0
IF EXIST "%dp0%\node.exe" (
SET "_prog=%dp0%\node.exe"
) ELSE (
SET "_prog=node"
SET PATHEXT=%PATHEXT:;.JS;=;%
)
endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%" "%dp0%\..\semver\bin\semver.js" %*

@ -0,0 +1,28 @@
#!/usr/bin/env pwsh
$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
$exe=""
if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
# Fix case when both the Windows and Linux builds of Node
# are installed in the same directory
$exe=".exe"
}
$ret=0
if (Test-Path "$basedir/node$exe") {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "$basedir/node$exe" "$basedir/../semver/bin/semver.js" $args
} else {
& "$basedir/node$exe" "$basedir/../semver/bin/semver.js" $args
}
$ret=$LASTEXITCODE
} else {
# Support pipeline input
if ($MyInvocation.ExpectingInput) {
$input | & "node$exe" "$basedir/../semver/bin/semver.js" $args
} else {
& "node$exe" "$basedir/../semver/bin/semver.js" $args
}
$ret=$LASTEXITCODE
}
exit $ret

@ -0,0 +1,336 @@
{
"name": "command_center",
"lockfileVersion": 3,
"requires": true,
"packages": {
"node_modules/anymatch": {
"version": "3.1.3",
"resolved": "https://registry.npmmirror.com/anymatch/-/anymatch-3.1.3.tgz",
"integrity": "sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==",
"dev": true,
"dependencies": {
"normalize-path": "^3.0.0",
"picomatch": "^2.0.4"
},
"engines": {
"node": ">= 8"
}
},
"node_modules/balanced-match": {
"version": "1.0.2",
"resolved": "https://registry.npmmirror.com/balanced-match/-/balanced-match-1.0.2.tgz",
"integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
"dev": true
},
"node_modules/binary-extensions": {
"version": "2.3.0",
"resolved": "https://registry.npmmirror.com/binary-extensions/-/binary-extensions-2.3.0.tgz",
"integrity": "sha512-Ceh+7ox5qe7LJuLHoY0feh3pHuUDHAcRUeyL2VYghZwfpkNIy/+8Ocg0a3UuSoYzavmylwuLWQOf3hl0jjMMIw==",
"dev": true,
"engines": {
"node": ">=8"
},
"funding": {
"url": "https://github.com/sponsors/sindresorhus"
}
},
"node_modules/brace-expansion": {
"version": "1.1.12",
"resolved": "https://registry.npmmirror.com/brace-expansion/-/brace-expansion-1.1.12.tgz",
"integrity": "sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==",
"dev": true,
"dependencies": {
"balanced-match": "^1.0.0",
"concat-map": "0.0.1"
}
},
"node_modules/braces": {
"version": "3.0.3",
"resolved": "https://registry.npmmirror.com/braces/-/braces-3.0.3.tgz",
"integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
"dev": true,
"dependencies": {
"fill-range": "^7.1.1"
},
"engines": {
"node": ">=8"
}
},
"node_modules/chokidar": {
"version": "3.6.0",
"resolved": "https://registry.npmmirror.com/chokidar/-/chokidar-3.6.0.tgz",
"integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==",
"dev": true,
"dependencies": {
"anymatch": "~3.1.2",
"braces": "~3.0.2",
"glob-parent": "~5.1.2",
"is-binary-path": "~2.1.0",
"is-glob": "~4.0.1",
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},
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}
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}
},
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"resolved": "https://registry.npmmirror.com/is-number/-/is-number-7.0.0.tgz",
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}
},
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"resolved": "https://registry.npmmirror.com/minimatch/-/minimatch-3.1.2.tgz",
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"dev": true,
"dependencies": {
"brace-expansion": "^1.1.7"
},
"engines": {
"node": "*"
}
},
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"version": "2.1.3",
"resolved": "https://registry.npmmirror.com/ms/-/ms-2.1.3.tgz",
"integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
"dev": true
},
"node_modules/nodemon": {
"version": "3.1.10",
"resolved": "https://registry.npmmirror.com/nodemon/-/nodemon-3.1.10.tgz",
"integrity": "sha512-WDjw3pJ0/0jMFmyNDp3gvY2YizjLmmOUQo6DEBY+JgdvW/yQ9mEeSw6H5ythl5Ny2ytb7f9C2nIbjSxMNzbJXw==",
"dev": true,
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"debug": "^4",
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"pstree.remy": "^1.1.8",
"semver": "^7.5.3",
"simple-update-notifier": "^2.0.0",
"supports-color": "^5.5.0",
"touch": "^3.1.0",
"undefsafe": "^2.0.5"
},
"bin": {
"nodemon": "bin/nodemon.js"
},
"engines": {
"node": ">=10"
},
"funding": {
"type": "opencollective",
"url": "https://opencollective.com/nodemon"
}
},
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"version": "3.0.0",
"resolved": "https://registry.npmmirror.com/normalize-path/-/normalize-path-3.0.0.tgz",
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"dev": true,
"engines": {
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}
},
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"version": "2.3.1",
"resolved": "https://registry.npmmirror.com/picomatch/-/picomatch-2.3.1.tgz",
"integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
"dev": true,
"engines": {
"node": ">=8.6"
},
"funding": {
"url": "https://github.com/sponsors/jonschlinkert"
}
},
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"resolved": "https://registry.npmmirror.com/pstree.remy/-/pstree.remy-1.1.8.tgz",
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"dev": true
},
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"dependencies": {
"picomatch": "^2.2.1"
},
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}
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"bin": {
"semver": "bin/semver.js"
},
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}
},
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"dev": true,
"dependencies": {
"has-flag": "^3.0.0"
},
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}
},
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"version": "5.0.1",
"resolved": "https://registry.npmmirror.com/to-regex-range/-/to-regex-range-5.0.1.tgz",
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"is-number": "^7.0.0"
},
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"version": "3.1.1",
"resolved": "https://registry.npmmirror.com/touch/-/touch-3.1.1.tgz",
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"dev": true,
"bin": {
"nodetouch": "bin/nodetouch.js"
}
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"node_modules/undefsafe": {
"version": "2.0.5",
"resolved": "https://registry.npmmirror.com/undefsafe/-/undefsafe-2.0.5.tgz",
"integrity": "sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==",
"dev": true
}
}
}

@ -0,0 +1,15 @@
The ISC License
Copyright (c) 2019 Elan Shanker, Paul Miller (https://paulmillr.com)
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

@ -0,0 +1,87 @@
anymatch [![Build Status](https://travis-ci.org/micromatch/anymatch.svg?branch=master)](https://travis-ci.org/micromatch/anymatch) [![Coverage Status](https://img.shields.io/coveralls/micromatch/anymatch.svg?branch=master)](https://coveralls.io/r/micromatch/anymatch?branch=master)
======
Javascript module to match a string against a regular expression, glob, string,
or function that takes the string as an argument and returns a truthy or falsy
value. The matcher can also be an array of any or all of these. Useful for
allowing a very flexible user-defined config to define things like file paths.
__Note: This module has Bash-parity, please be aware that Windows-style backslashes are not supported as separators. See https://github.com/micromatch/micromatch#backslashes for more information.__
Usage
-----
```sh
npm install anymatch
```
#### anymatch(matchers, testString, [returnIndex], [options])
* __matchers__: (_Array|String|RegExp|Function_)
String to be directly matched, string with glob patterns, regular expression
test, function that takes the testString as an argument and returns a truthy
value if it should be matched, or an array of any number and mix of these types.
* __testString__: (_String|Array_) The string to test against the matchers. If
passed as an array, the first element of the array will be used as the
`testString` for non-function matchers, while the entire array will be applied
as the arguments for function matchers.
* __options__: (_Object_ [optional]_) Any of the [picomatch](https://github.com/micromatch/picomatch#options) options.
* __returnIndex__: (_Boolean [optional]_) If true, return the array index of
the first matcher that that testString matched, or -1 if no match, instead of a
boolean result.
```js
const anymatch = require('anymatch');
const matchers = [ 'path/to/file.js', 'path/anyjs/**/*.js', /foo.js$/, string => string.includes('bar') && string.length > 10 ] ;
anymatch(matchers, 'path/to/file.js'); // true
anymatch(matchers, 'path/anyjs/baz.js'); // true
anymatch(matchers, 'path/to/foo.js'); // true
anymatch(matchers, 'path/to/bar.js'); // true
anymatch(matchers, 'bar.js'); // false
// returnIndex = true
anymatch(matchers, 'foo.js', {returnIndex: true}); // 2
anymatch(matchers, 'path/anyjs/foo.js', {returnIndex: true}); // 1
// any picomatc
// using globs to match directories and their children
anymatch('node_modules', 'node_modules'); // true
anymatch('node_modules', 'node_modules/somelib/index.js'); // false
anymatch('node_modules/**', 'node_modules/somelib/index.js'); // true
anymatch('node_modules/**', '/absolute/path/to/node_modules/somelib/index.js'); // false
anymatch('**/node_modules/**', '/absolute/path/to/node_modules/somelib/index.js'); // true
const matcher = anymatch(matchers);
['foo.js', 'bar.js'].filter(matcher); // [ 'foo.js' ]
anymatch master*
```
#### anymatch(matchers)
You can also pass in only your matcher(s) to get a curried function that has
already been bound to the provided matching criteria. This can be used as an
`Array#filter` callback.
```js
var matcher = anymatch(matchers);
matcher('path/to/file.js'); // true
matcher('path/anyjs/baz.js', true); // 1
['foo.js', 'bar.js'].filter(matcher); // ['foo.js']
```
Changelog
----------
[See release notes page on GitHub](https://github.com/micromatch/anymatch/releases)
- **v3.0:** Removed `startIndex` and `endIndex` arguments. Node 8.x-only.
- **v2.0:** [micromatch](https://github.com/jonschlinkert/micromatch) moves away from minimatch-parity and inline with Bash. This includes handling backslashes differently (see https://github.com/micromatch/micromatch#backslashes for more information).
- **v1.2:** anymatch uses [micromatch](https://github.com/jonschlinkert/micromatch)
for glob pattern matching. Issues with glob pattern matching should be
reported directly to the [micromatch issue tracker](https://github.com/jonschlinkert/micromatch/issues).
License
-------
[ISC](https://raw.github.com/micromatch/anymatch/master/LICENSE)

@ -0,0 +1,20 @@
type AnymatchFn = (testString: string) => boolean;
type AnymatchPattern = string|RegExp|AnymatchFn;
type AnymatchMatcher = AnymatchPattern|AnymatchPattern[]
type AnymatchTester = {
(testString: string|any[], returnIndex: true): number;
(testString: string|any[]): boolean;
}
type PicomatchOptions = {dot: boolean};
declare const anymatch: {
(matchers: AnymatchMatcher): AnymatchTester;
(matchers: AnymatchMatcher, testString: null, returnIndex: true | PicomatchOptions): AnymatchTester;
(matchers: AnymatchMatcher, testString: string|any[], returnIndex: true | PicomatchOptions): number;
(matchers: AnymatchMatcher, testString: string|any[]): boolean;
}
export {AnymatchMatcher as Matcher}
export {AnymatchTester as Tester}
export default anymatch

@ -0,0 +1,104 @@
'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
const picomatch = require('picomatch');
const normalizePath = require('normalize-path');
/**
* @typedef {(testString: string) => boolean} AnymatchFn
* @typedef {string|RegExp|AnymatchFn} AnymatchPattern
* @typedef {AnymatchPattern|AnymatchPattern[]} AnymatchMatcher
*/
const BANG = '!';
const DEFAULT_OPTIONS = {returnIndex: false};
const arrify = (item) => Array.isArray(item) ? item : [item];
/**
* @param {AnymatchPattern} matcher
* @param {object} options
* @returns {AnymatchFn}
*/
const createPattern = (matcher, options) => {
if (typeof matcher === 'function') {
return matcher;
}
if (typeof matcher === 'string') {
const glob = picomatch(matcher, options);
return (string) => matcher === string || glob(string);
}
if (matcher instanceof RegExp) {
return (string) => matcher.test(string);
}
return (string) => false;
};
/**
* @param {Array<Function>} patterns
* @param {Array<Function>} negPatterns
* @param {String|Array} args
* @param {Boolean} returnIndex
* @returns {boolean|number}
*/
const matchPatterns = (patterns, negPatterns, args, returnIndex) => {
const isList = Array.isArray(args);
const _path = isList ? args[0] : args;
if (!isList && typeof _path !== 'string') {
throw new TypeError('anymatch: second argument must be a string: got ' +
Object.prototype.toString.call(_path))
}
const path = normalizePath(_path, false);
for (let index = 0; index < negPatterns.length; index++) {
const nglob = negPatterns[index];
if (nglob(path)) {
return returnIndex ? -1 : false;
}
}
const applied = isList && [path].concat(args.slice(1));
for (let index = 0; index < patterns.length; index++) {
const pattern = patterns[index];
if (isList ? pattern(...applied) : pattern(path)) {
return returnIndex ? index : true;
}
}
return returnIndex ? -1 : false;
};
/**
* @param {AnymatchMatcher} matchers
* @param {Array|string} testString
* @param {object} options
* @returns {boolean|number|Function}
*/
const anymatch = (matchers, testString, options = DEFAULT_OPTIONS) => {
if (matchers == null) {
throw new TypeError('anymatch: specify first argument');
}
const opts = typeof options === 'boolean' ? {returnIndex: options} : options;
const returnIndex = opts.returnIndex || false;
// Early cache for matchers.
const mtchers = arrify(matchers);
const negatedGlobs = mtchers
.filter(item => typeof item === 'string' && item.charAt(0) === BANG)
.map(item => item.slice(1))
.map(item => picomatch(item, opts));
const patterns = mtchers
.filter(item => typeof item !== 'string' || (typeof item === 'string' && item.charAt(0) !== BANG))
.map(matcher => createPattern(matcher, opts));
if (testString == null) {
return (testString, ri = false) => {
const returnIndex = typeof ri === 'boolean' ? ri : false;
return matchPatterns(patterns, negatedGlobs, testString, returnIndex);
}
}
return matchPatterns(patterns, negatedGlobs, testString, returnIndex);
};
anymatch.default = anymatch;
module.exports = anymatch;

@ -0,0 +1,48 @@
{
"name": "anymatch",
"version": "3.1.3",
"description": "Matches strings against configurable strings, globs, regular expressions, and/or functions",
"files": [
"index.js",
"index.d.ts"
],
"dependencies": {
"normalize-path": "^3.0.0",
"picomatch": "^2.0.4"
},
"author": {
"name": "Elan Shanker",
"url": "https://github.com/es128"
},
"license": "ISC",
"homepage": "https://github.com/micromatch/anymatch",
"repository": {
"type": "git",
"url": "https://github.com/micromatch/anymatch"
},
"keywords": [
"match",
"any",
"string",
"file",
"fs",
"list",
"glob",
"regex",
"regexp",
"regular",
"expression",
"function"
],
"scripts": {
"test": "nyc mocha",
"mocha": "mocha"
},
"devDependencies": {
"mocha": "^6.1.3",
"nyc": "^14.0.0"
},
"engines": {
"node": ">= 8"
}
}

@ -0,0 +1,2 @@
tidelift: "npm/balanced-match"
patreon: juliangruber

@ -0,0 +1,21 @@
(MIT)
Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

@ -0,0 +1,97 @@
# balanced-match
Match balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well!
[![build status](https://secure.travis-ci.org/juliangruber/balanced-match.svg)](http://travis-ci.org/juliangruber/balanced-match)
[![downloads](https://img.shields.io/npm/dm/balanced-match.svg)](https://www.npmjs.org/package/balanced-match)
[![testling badge](https://ci.testling.com/juliangruber/balanced-match.png)](https://ci.testling.com/juliangruber/balanced-match)
## Example
Get the first matching pair of braces:
```js
var balanced = require('balanced-match');
console.log(balanced('{', '}', 'pre{in{nested}}post'));
console.log(balanced('{', '}', 'pre{first}between{second}post'));
console.log(balanced(/\s+\{\s+/, /\s+\}\s+/, 'pre { in{nest} } post'));
```
The matches are:
```bash
$ node example.js
{ start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' }
{ start: 3,
end: 9,
pre: 'pre',
body: 'first',
post: 'between{second}post' }
{ start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' }
```
## API
### var m = balanced(a, b, str)
For the first non-nested matching pair of `a` and `b` in `str`, return an
object with those keys:
* **start** the index of the first match of `a`
* **end** the index of the matching `b`
* **pre** the preamble, `a` and `b` not included
* **body** the match, `a` and `b` not included
* **post** the postscript, `a` and `b` not included
If there's no match, `undefined` will be returned.
If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`.
### var r = balanced.range(a, b, str)
For the first non-nested matching pair of `a` and `b` in `str`, return an
array with indexes: `[ <a index>, <b index> ]`.
If there's no match, `undefined` will be returned.
If the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`.
## Installation
With [npm](https://npmjs.org) do:
```bash
npm install balanced-match
```
## Security contact information
To report a security vulnerability, please use the
[Tidelift security contact](https://tidelift.com/security).
Tidelift will coordinate the fix and disclosure.
## License
(MIT)
Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

@ -0,0 +1,62 @@
'use strict';
module.exports = balanced;
function balanced(a, b, str) {
if (a instanceof RegExp) a = maybeMatch(a, str);
if (b instanceof RegExp) b = maybeMatch(b, str);
var r = range(a, b, str);
return r && {
start: r[0],
end: r[1],
pre: str.slice(0, r[0]),
body: str.slice(r[0] + a.length, r[1]),
post: str.slice(r[1] + b.length)
};
}
function maybeMatch(reg, str) {
var m = str.match(reg);
return m ? m[0] : null;
}
balanced.range = range;
function range(a, b, str) {
var begs, beg, left, right, result;
var ai = str.indexOf(a);
var bi = str.indexOf(b, ai + 1);
var i = ai;
if (ai >= 0 && bi > 0) {
if(a===b) {
return [ai, bi];
}
begs = [];
left = str.length;
while (i >= 0 && !result) {
if (i == ai) {
begs.push(i);
ai = str.indexOf(a, i + 1);
} else if (begs.length == 1) {
result = [ begs.pop(), bi ];
} else {
beg = begs.pop();
if (beg < left) {
left = beg;
right = bi;
}
bi = str.indexOf(b, i + 1);
}
i = ai < bi && ai >= 0 ? ai : bi;
}
if (begs.length) {
result = [ left, right ];
}
}
return result;
}

@ -0,0 +1,48 @@
{
"name": "balanced-match",
"description": "Match balanced character pairs, like \"{\" and \"}\"",
"version": "1.0.2",
"repository": {
"type": "git",
"url": "git://github.com/juliangruber/balanced-match.git"
},
"homepage": "https://github.com/juliangruber/balanced-match",
"main": "index.js",
"scripts": {
"test": "tape test/test.js",
"bench": "matcha test/bench.js"
},
"devDependencies": {
"matcha": "^0.7.0",
"tape": "^4.6.0"
},
"keywords": [
"match",
"regexp",
"test",
"balanced",
"parse"
],
"author": {
"name": "Julian Gruber",
"email": "mail@juliangruber.com",
"url": "http://juliangruber.com"
},
"license": "MIT",
"testling": {
"files": "test/*.js",
"browsers": [
"ie/8..latest",
"firefox/20..latest",
"firefox/nightly",
"chrome/25..latest",
"chrome/canary",
"opera/12..latest",
"opera/next",
"safari/5.1..latest",
"ipad/6.0..latest",
"iphone/6.0..latest",
"android-browser/4.2..latest"
]
}
}

@ -0,0 +1,263 @@
[
"3dm",
"3ds",
"3g2",
"3gp",
"7z",
"a",
"aac",
"adp",
"afdesign",
"afphoto",
"afpub",
"ai",
"aif",
"aiff",
"alz",
"ape",
"apk",
"appimage",
"ar",
"arj",
"asf",
"au",
"avi",
"bak",
"baml",
"bh",
"bin",
"bk",
"bmp",
"btif",
"bz2",
"bzip2",
"cab",
"caf",
"cgm",
"class",
"cmx",
"cpio",
"cr2",
"cur",
"dat",
"dcm",
"deb",
"dex",
"djvu",
"dll",
"dmg",
"dng",
"doc",
"docm",
"docx",
"dot",
"dotm",
"dra",
"DS_Store",
"dsk",
"dts",
"dtshd",
"dvb",
"dwg",
"dxf",
"ecelp4800",
"ecelp7470",
"ecelp9600",
"egg",
"eol",
"eot",
"epub",
"exe",
"f4v",
"fbs",
"fh",
"fla",
"flac",
"flatpak",
"fli",
"flv",
"fpx",
"fst",
"fvt",
"g3",
"gh",
"gif",
"graffle",
"gz",
"gzip",
"h261",
"h263",
"h264",
"icns",
"ico",
"ief",
"img",
"ipa",
"iso",
"jar",
"jpeg",
"jpg",
"jpgv",
"jpm",
"jxr",
"key",
"ktx",
"lha",
"lib",
"lvp",
"lz",
"lzh",
"lzma",
"lzo",
"m3u",
"m4a",
"m4v",
"mar",
"mdi",
"mht",
"mid",
"midi",
"mj2",
"mka",
"mkv",
"mmr",
"mng",
"mobi",
"mov",
"movie",
"mp3",
"mp4",
"mp4a",
"mpeg",
"mpg",
"mpga",
"mxu",
"nef",
"npx",
"numbers",
"nupkg",
"o",
"odp",
"ods",
"odt",
"oga",
"ogg",
"ogv",
"otf",
"ott",
"pages",
"pbm",
"pcx",
"pdb",
"pdf",
"pea",
"pgm",
"pic",
"png",
"pnm",
"pot",
"potm",
"potx",
"ppa",
"ppam",
"ppm",
"pps",
"ppsm",
"ppsx",
"ppt",
"pptm",
"pptx",
"psd",
"pya",
"pyc",
"pyo",
"pyv",
"qt",
"rar",
"ras",
"raw",
"resources",
"rgb",
"rip",
"rlc",
"rmf",
"rmvb",
"rpm",
"rtf",
"rz",
"s3m",
"s7z",
"scpt",
"sgi",
"shar",
"snap",
"sil",
"sketch",
"slk",
"smv",
"snk",
"so",
"stl",
"suo",
"sub",
"swf",
"tar",
"tbz",
"tbz2",
"tga",
"tgz",
"thmx",
"tif",
"tiff",
"tlz",
"ttc",
"ttf",
"txz",
"udf",
"uvh",
"uvi",
"uvm",
"uvp",
"uvs",
"uvu",
"viv",
"vob",
"war",
"wav",
"wax",
"wbmp",
"wdp",
"weba",
"webm",
"webp",
"whl",
"wim",
"wm",
"wma",
"wmv",
"wmx",
"woff",
"woff2",
"wrm",
"wvx",
"xbm",
"xif",
"xla",
"xlam",
"xls",
"xlsb",
"xlsm",
"xlsx",
"xlt",
"xltm",
"xltx",
"xm",
"xmind",
"xpi",
"xpm",
"xwd",
"xz",
"z",
"zip",
"zipx"
]

@ -0,0 +1,3 @@
declare const binaryExtensionsJson: readonly string[];
export = binaryExtensionsJson;

@ -0,0 +1,14 @@
/**
List of binary file extensions.
@example
```
import binaryExtensions = require('binary-extensions');
console.log(binaryExtensions);
//=> ['3ds', '3g2', …]
```
*/
declare const binaryExtensions: readonly string[];
export = binaryExtensions;

@ -0,0 +1 @@
module.exports = require('./binary-extensions.json');

@ -0,0 +1,10 @@
MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
Copyright (c) Paul Miller (https://paulmillr.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

@ -0,0 +1,40 @@
{
"name": "binary-extensions",
"version": "2.3.0",
"description": "List of binary file extensions",
"license": "MIT",
"repository": "sindresorhus/binary-extensions",
"funding": "https://github.com/sponsors/sindresorhus",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "https://sindresorhus.com"
},
"sideEffects": false,
"engines": {
"node": ">=8"
},
"scripts": {
"test": "xo && ava && tsd"
},
"files": [
"index.js",
"index.d.ts",
"binary-extensions.json",
"binary-extensions.json.d.ts"
],
"keywords": [
"binary",
"extensions",
"extension",
"file",
"json",
"list",
"array"
],
"devDependencies": {
"ava": "^1.4.1",
"tsd": "^0.7.2",
"xo": "^0.24.0"
}
}

@ -0,0 +1,25 @@
# binary-extensions
> List of binary file extensions
The list is just a [JSON file](binary-extensions.json) and can be used anywhere.
## Install
```sh
npm install binary-extensions
```
## Usage
```js
const binaryExtensions = require('binary-extensions');
console.log(binaryExtensions);
//=> ['3ds', '3g2', …]
```
## Related
- [is-binary-path](https://github.com/sindresorhus/is-binary-path) - Check if a filepath is a binary file
- [text-extensions](https://github.com/sindresorhus/text-extensions) - List of text file extensions

@ -0,0 +1,21 @@
MIT License
Copyright (c) 2013 Julian Gruber <julian@juliangruber.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

@ -0,0 +1,129 @@
# brace-expansion
[Brace expansion](https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html),
as known from sh/bash, in JavaScript.
[![build status](https://secure.travis-ci.org/juliangruber/brace-expansion.svg)](http://travis-ci.org/juliangruber/brace-expansion)
[![downloads](https://img.shields.io/npm/dm/brace-expansion.svg)](https://www.npmjs.org/package/brace-expansion)
[![Greenkeeper badge](https://badges.greenkeeper.io/juliangruber/brace-expansion.svg)](https://greenkeeper.io/)
[![testling badge](https://ci.testling.com/juliangruber/brace-expansion.png)](https://ci.testling.com/juliangruber/brace-expansion)
## Example
```js
var expand = require('brace-expansion');
expand('file-{a,b,c}.jpg')
// => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg']
expand('-v{,,}')
// => ['-v', '-v', '-v']
expand('file{0..2}.jpg')
// => ['file0.jpg', 'file1.jpg', 'file2.jpg']
expand('file-{a..c}.jpg')
// => ['file-a.jpg', 'file-b.jpg', 'file-c.jpg']
expand('file{2..0}.jpg')
// => ['file2.jpg', 'file1.jpg', 'file0.jpg']
expand('file{0..4..2}.jpg')
// => ['file0.jpg', 'file2.jpg', 'file4.jpg']
expand('file-{a..e..2}.jpg')
// => ['file-a.jpg', 'file-c.jpg', 'file-e.jpg']
expand('file{00..10..5}.jpg')
// => ['file00.jpg', 'file05.jpg', 'file10.jpg']
expand('{{A..C},{a..c}}')
// => ['A', 'B', 'C', 'a', 'b', 'c']
expand('ppp{,config,oe{,conf}}')
// => ['ppp', 'pppconfig', 'pppoe', 'pppoeconf']
```
## API
```js
var expand = require('brace-expansion');
```
### var expanded = expand(str)
Return an array of all possible and valid expansions of `str`. If none are
found, `[str]` is returned.
Valid expansions are:
```js
/^(.*,)+(.+)?$/
// {a,b,...}
```
A comma separated list of options, like `{a,b}` or `{a,{b,c}}` or `{,a,}`.
```js
/^-?\d+\.\.-?\d+(\.\.-?\d+)?$/
// {x..y[..incr]}
```
A numeric sequence from `x` to `y` inclusive, with optional increment.
If `x` or `y` start with a leading `0`, all the numbers will be padded
to have equal length. Negative numbers and backwards iteration work too.
```js
/^-?\d+\.\.-?\d+(\.\.-?\d+)?$/
// {x..y[..incr]}
```
An alphabetic sequence from `x` to `y` inclusive, with optional increment.
`x` and `y` must be exactly one character, and if given, `incr` must be a
number.
For compatibility reasons, the string `${` is not eligible for brace expansion.
## Installation
With [npm](https://npmjs.org) do:
```bash
npm install brace-expansion
```
## Contributors
- [Julian Gruber](https://github.com/juliangruber)
- [Isaac Z. Schlueter](https://github.com/isaacs)
## Sponsors
This module is proudly supported by my [Sponsors](https://github.com/juliangruber/sponsors)!
Do you want to support modules like this to improve their quality, stability and weigh in on new features? Then please consider donating to my [Patreon](https://www.patreon.com/juliangruber). Not sure how much of my modules you're using? Try [feross/thanks](https://github.com/feross/thanks)!
## License
(MIT)
Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

@ -0,0 +1,201 @@
var concatMap = require('concat-map');
var balanced = require('balanced-match');
module.exports = expandTop;
var escSlash = '\0SLASH'+Math.random()+'\0';
var escOpen = '\0OPEN'+Math.random()+'\0';
var escClose = '\0CLOSE'+Math.random()+'\0';
var escComma = '\0COMMA'+Math.random()+'\0';
var escPeriod = '\0PERIOD'+Math.random()+'\0';
function numeric(str) {
return parseInt(str, 10) == str
? parseInt(str, 10)
: str.charCodeAt(0);
}
function escapeBraces(str) {
return str.split('\\\\').join(escSlash)
.split('\\{').join(escOpen)
.split('\\}').join(escClose)
.split('\\,').join(escComma)
.split('\\.').join(escPeriod);
}
function unescapeBraces(str) {
return str.split(escSlash).join('\\')
.split(escOpen).join('{')
.split(escClose).join('}')
.split(escComma).join(',')
.split(escPeriod).join('.');
}
// Basically just str.split(","), but handling cases
// where we have nested braced sections, which should be
// treated as individual members, like {a,{b,c},d}
function parseCommaParts(str) {
if (!str)
return [''];
var parts = [];
var m = balanced('{', '}', str);
if (!m)
return str.split(',');
var pre = m.pre;
var body = m.body;
var post = m.post;
var p = pre.split(',');
p[p.length-1] += '{' + body + '}';
var postParts = parseCommaParts(post);
if (post.length) {
p[p.length-1] += postParts.shift();
p.push.apply(p, postParts);
}
parts.push.apply(parts, p);
return parts;
}
function expandTop(str) {
if (!str)
return [];
// I don't know why Bash 4.3 does this, but it does.
// Anything starting with {} will have the first two bytes preserved
// but *only* at the top level, so {},a}b will not expand to anything,
// but a{},b}c will be expanded to [a}c,abc].
// One could argue that this is a bug in Bash, but since the goal of
// this module is to match Bash's rules, we escape a leading {}
if (str.substr(0, 2) === '{}') {
str = '\\{\\}' + str.substr(2);
}
return expand(escapeBraces(str), true).map(unescapeBraces);
}
function identity(e) {
return e;
}
function embrace(str) {
return '{' + str + '}';
}
function isPadded(el) {
return /^-?0\d/.test(el);
}
function lte(i, y) {
return i <= y;
}
function gte(i, y) {
return i >= y;
}
function expand(str, isTop) {
var expansions = [];
var m = balanced('{', '}', str);
if (!m || /\$$/.test(m.pre)) return [str];
var isNumericSequence = /^-?\d+\.\.-?\d+(?:\.\.-?\d+)?$/.test(m.body);
var isAlphaSequence = /^[a-zA-Z]\.\.[a-zA-Z](?:\.\.-?\d+)?$/.test(m.body);
var isSequence = isNumericSequence || isAlphaSequence;
var isOptions = m.body.indexOf(',') >= 0;
if (!isSequence && !isOptions) {
// {a},b}
if (m.post.match(/,(?!,).*\}/)) {
str = m.pre + '{' + m.body + escClose + m.post;
return expand(str);
}
return [str];
}
var n;
if (isSequence) {
n = m.body.split(/\.\./);
} else {
n = parseCommaParts(m.body);
if (n.length === 1) {
// x{{a,b}}y ==> x{a}y x{b}y
n = expand(n[0], false).map(embrace);
if (n.length === 1) {
var post = m.post.length
? expand(m.post, false)
: [''];
return post.map(function(p) {
return m.pre + n[0] + p;
});
}
}
}
// at this point, n is the parts, and we know it's not a comma set
// with a single entry.
// no need to expand pre, since it is guaranteed to be free of brace-sets
var pre = m.pre;
var post = m.post.length
? expand(m.post, false)
: [''];
var N;
if (isSequence) {
var x = numeric(n[0]);
var y = numeric(n[1]);
var width = Math.max(n[0].length, n[1].length)
var incr = n.length == 3
? Math.abs(numeric(n[2]))
: 1;
var test = lte;
var reverse = y < x;
if (reverse) {
incr *= -1;
test = gte;
}
var pad = n.some(isPadded);
N = [];
for (var i = x; test(i, y); i += incr) {
var c;
if (isAlphaSequence) {
c = String.fromCharCode(i);
if (c === '\\')
c = '';
} else {
c = String(i);
if (pad) {
var need = width - c.length;
if (need > 0) {
var z = new Array(need + 1).join('0');
if (i < 0)
c = '-' + z + c.slice(1);
else
c = z + c;
}
}
}
N.push(c);
}
} else {
N = concatMap(n, function(el) { return expand(el, false) });
}
for (var j = 0; j < N.length; j++) {
for (var k = 0; k < post.length; k++) {
var expansion = pre + N[j] + post[k];
if (!isTop || isSequence || expansion)
expansions.push(expansion);
}
}
return expansions;
}

@ -0,0 +1,50 @@
{
"name": "brace-expansion",
"description": "Brace expansion as known from sh/bash",
"version": "1.1.12",
"repository": {
"type": "git",
"url": "git://github.com/juliangruber/brace-expansion.git"
},
"homepage": "https://github.com/juliangruber/brace-expansion",
"main": "index.js",
"scripts": {
"test": "tape test/*.js",
"gentest": "bash test/generate.sh",
"bench": "matcha test/perf/bench.js"
},
"dependencies": {
"balanced-match": "^1.0.0",
"concat-map": "0.0.1"
},
"devDependencies": {
"matcha": "^0.7.0",
"tape": "^4.6.0"
},
"keywords": [],
"author": {
"name": "Julian Gruber",
"email": "mail@juliangruber.com",
"url": "http://juliangruber.com"
},
"license": "MIT",
"testling": {
"files": "test/*.js",
"browsers": [
"ie/8..latest",
"firefox/20..latest",
"firefox/nightly",
"chrome/25..latest",
"chrome/canary",
"opera/12..latest",
"opera/next",
"safari/5.1..latest",
"ipad/6.0..latest",
"iphone/6.0..latest",
"android-browser/4.2..latest"
]
},
"publishConfig": {
"tag": "1.x"
}
}

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014-present, Jon Schlinkert.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

@ -0,0 +1,586 @@
# braces [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [![NPM version](https://img.shields.io/npm/v/braces.svg?style=flat)](https://www.npmjs.com/package/braces) [![NPM monthly downloads](https://img.shields.io/npm/dm/braces.svg?style=flat)](https://npmjs.org/package/braces) [![NPM total downloads](https://img.shields.io/npm/dt/braces.svg?style=flat)](https://npmjs.org/package/braces) [![Linux Build Status](https://img.shields.io/travis/micromatch/braces.svg?style=flat&label=Travis)](https://travis-ci.org/micromatch/braces)
> Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed.
Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
## Install
Install with [npm](https://www.npmjs.com/):
```sh
$ npm install --save braces
```
## v3.0.0 Released!!
See the [changelog](CHANGELOG.md) for details.
## Why use braces?
Brace patterns make globs more powerful by adding the ability to match specific ranges and sequences of characters.
- **Accurate** - complete support for the [Bash 4.3 Brace Expansion](www.gnu.org/software/bash/) specification (passes all of the Bash braces tests)
- **[fast and performant](#benchmarks)** - Starts fast, runs fast and [scales well](#performance) as patterns increase in complexity.
- **Organized code base** - The parser and compiler are easy to maintain and update when edge cases crop up.
- **Well-tested** - Thousands of test assertions, and passes all of the Bash, minimatch, and [brace-expansion](https://github.com/juliangruber/brace-expansion) unit tests (as of the date this was written).
- **Safer** - You shouldn't have to worry about users defining aggressive or malicious brace patterns that can break your application. Braces takes measures to prevent malicious regex that can be used for DDoS attacks (see [catastrophic backtracking](https://www.regular-expressions.info/catastrophic.html)).
- [Supports lists](#lists) - (aka "sets") `a/{b,c}/d` => `['a/b/d', 'a/c/d']`
- [Supports sequences](#sequences) - (aka "ranges") `{01..03}` => `['01', '02', '03']`
- [Supports steps](#steps) - (aka "increments") `{2..10..2}` => `['2', '4', '6', '8', '10']`
- [Supports escaping](#escaping) - To prevent evaluation of special characters.
## Usage
The main export is a function that takes one or more brace `patterns` and `options`.
```js
const braces = require('braces');
// braces(patterns[, options]);
console.log(braces(['{01..05}', '{a..e}']));
//=> ['(0[1-5])', '([a-e])']
console.log(braces(['{01..05}', '{a..e}'], { expand: true }));
//=> ['01', '02', '03', '04', '05', 'a', 'b', 'c', 'd', 'e']
```
### Brace Expansion vs. Compilation
By default, brace patterns are compiled into strings that are optimized for creating regular expressions and matching.
**Compiled**
```js
console.log(braces('a/{x,y,z}/b'));
//=> ['a/(x|y|z)/b']
console.log(braces(['a/{01..20}/b', 'a/{1..5}/b']));
//=> [ 'a/(0[1-9]|1[0-9]|20)/b', 'a/([1-5])/b' ]
```
**Expanded**
Enable brace expansion by setting the `expand` option to true, or by using [braces.expand()](#expand) (returns an array similar to what you'd expect from Bash, or `echo {1..5}`, or [minimatch](https://github.com/isaacs/minimatch)):
```js
console.log(braces('a/{x,y,z}/b', { expand: true }));
//=> ['a/x/b', 'a/y/b', 'a/z/b']
console.log(braces.expand('{01..10}'));
//=> ['01','02','03','04','05','06','07','08','09','10']
```
### Lists
Expand lists (like Bash "sets"):
```js
console.log(braces('a/{foo,bar,baz}/*.js'));
//=> ['a/(foo|bar|baz)/*.js']
console.log(braces.expand('a/{foo,bar,baz}/*.js'));
//=> ['a/foo/*.js', 'a/bar/*.js', 'a/baz/*.js']
```
### Sequences
Expand ranges of characters (like Bash "sequences"):
```js
console.log(braces.expand('{1..3}')); // ['1', '2', '3']
console.log(braces.expand('a/{1..3}/b')); // ['a/1/b', 'a/2/b', 'a/3/b']
console.log(braces('{a..c}', { expand: true })); // ['a', 'b', 'c']
console.log(braces('foo/{a..c}', { expand: true })); // ['foo/a', 'foo/b', 'foo/c']
// supports zero-padded ranges
console.log(braces('a/{01..03}/b')); //=> ['a/(0[1-3])/b']
console.log(braces('a/{001..300}/b')); //=> ['a/(0{2}[1-9]|0[1-9][0-9]|[12][0-9]{2}|300)/b']
```
See [fill-range](https://github.com/jonschlinkert/fill-range) for all available range-expansion options.
### Steppped ranges
Steps, or increments, may be used with ranges:
```js
console.log(braces.expand('{2..10..2}'));
//=> ['2', '4', '6', '8', '10']
console.log(braces('{2..10..2}'));
//=> ['(2|4|6|8|10)']
```
When the [.optimize](#optimize) method is used, or [options.optimize](#optionsoptimize) is set to true, sequences are passed to [to-regex-range](https://github.com/jonschlinkert/to-regex-range) for expansion.
### Nesting
Brace patterns may be nested. The results of each expanded string are not sorted, and left to right order is preserved.
**"Expanded" braces**
```js
console.log(braces.expand('a{b,c,/{x,y}}/e'));
//=> ['ab/e', 'ac/e', 'a/x/e', 'a/y/e']
console.log(braces.expand('a/{x,{1..5},y}/c'));
//=> ['a/x/c', 'a/1/c', 'a/2/c', 'a/3/c', 'a/4/c', 'a/5/c', 'a/y/c']
```
**"Optimized" braces**
```js
console.log(braces('a{b,c,/{x,y}}/e'));
//=> ['a(b|c|/(x|y))/e']
console.log(braces('a/{x,{1..5},y}/c'));
//=> ['a/(x|([1-5])|y)/c']
```
### Escaping
**Escaping braces**
A brace pattern will not be expanded or evaluted if _either the opening or closing brace is escaped_:
```js
console.log(braces.expand('a\\{d,c,b}e'));
//=> ['a{d,c,b}e']
console.log(braces.expand('a{d,c,b\\}e'));
//=> ['a{d,c,b}e']
```
**Escaping commas**
Commas inside braces may also be escaped:
```js
console.log(braces.expand('a{b\\,c}d'));
//=> ['a{b,c}d']
console.log(braces.expand('a{d\\,c,b}e'));
//=> ['ad,ce', 'abe']
```
**Single items**
Following bash conventions, a brace pattern is also not expanded when it contains a single character:
```js
console.log(braces.expand('a{b}c'));
//=> ['a{b}c']
```
## Options
### options.maxLength
**Type**: `Number`
**Default**: `10,000`
**Description**: Limit the length of the input string. Useful when the input string is generated or your application allows users to pass a string, et cetera.
```js
console.log(braces('a/{b,c}/d', { maxLength: 3 })); //=> throws an error
```
### options.expand
**Type**: `Boolean`
**Default**: `undefined`
**Description**: Generate an "expanded" brace pattern (alternatively you can use the `braces.expand()` method, which does the same thing).
```js
console.log(braces('a/{b,c}/d', { expand: true }));
//=> [ 'a/b/d', 'a/c/d' ]
```
### options.nodupes
**Type**: `Boolean`
**Default**: `undefined`
**Description**: Remove duplicates from the returned array.
### options.rangeLimit
**Type**: `Number`
**Default**: `1000`
**Description**: To prevent malicious patterns from being passed by users, an error is thrown when `braces.expand()` is used or `options.expand` is true and the generated range will exceed the `rangeLimit`.
You can customize `options.rangeLimit` or set it to `Inifinity` to disable this altogether.
**Examples**
```js
// pattern exceeds the "rangeLimit", so it's optimized automatically
console.log(braces.expand('{1..1000}'));
//=> ['([1-9]|[1-9][0-9]{1,2}|1000)']
// pattern does not exceed "rangeLimit", so it's NOT optimized
console.log(braces.expand('{1..100}'));
//=> ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '100']
```
### options.transform
**Type**: `Function`
**Default**: `undefined`
**Description**: Customize range expansion.
**Example: Transforming non-numeric values**
```js
const alpha = braces.expand('x/{a..e}/y', {
transform(value, index) {
// When non-numeric values are passed, "value" is a character code.
return 'foo/' + String.fromCharCode(value) + '-' + index;
},
});
console.log(alpha);
//=> [ 'x/foo/a-0/y', 'x/foo/b-1/y', 'x/foo/c-2/y', 'x/foo/d-3/y', 'x/foo/e-4/y' ]
```
**Example: Transforming numeric values**
```js
const numeric = braces.expand('{1..5}', {
transform(value) {
// when numeric values are passed, "value" is a number
return 'foo/' + value * 2;
},
});
console.log(numeric);
//=> [ 'foo/2', 'foo/4', 'foo/6', 'foo/8', 'foo/10' ]
```
### options.quantifiers
**Type**: `Boolean`
**Default**: `undefined`
**Description**: In regular expressions, quanitifiers can be used to specify how many times a token can be repeated. For example, `a{1,3}` will match the letter `a` one to three times.
Unfortunately, regex quantifiers happen to share the same syntax as [Bash lists](#lists)
The `quantifiers` option tells braces to detect when [regex quantifiers](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#quantifiers) are defined in the given pattern, and not to try to expand them as lists.
**Examples**
```js
const braces = require('braces');
console.log(braces('a/b{1,3}/{x,y,z}'));
//=> [ 'a/b(1|3)/(x|y|z)' ]
console.log(braces('a/b{1,3}/{x,y,z}', { quantifiers: true }));
//=> [ 'a/b{1,3}/(x|y|z)' ]
console.log(braces('a/b{1,3}/{x,y,z}', { quantifiers: true, expand: true }));
//=> [ 'a/b{1,3}/x', 'a/b{1,3}/y', 'a/b{1,3}/z' ]
```
### options.keepEscaping
**Type**: `Boolean`
**Default**: `undefined`
**Description**: Do not strip backslashes that were used for escaping from the result.
## What is "brace expansion"?
Brace expansion is a type of parameter expansion that was made popular by unix shells for generating lists of strings, as well as regex-like matching when used alongside wildcards (globs).
In addition to "expansion", braces are also used for matching. In other words:
- [brace expansion](#brace-expansion) is for generating new lists
- [brace matching](#brace-matching) is for filtering existing lists
<details>
<summary><strong>More about brace expansion</strong> (click to expand)</summary>
There are two main types of brace expansion:
1. **lists**: which are defined using comma-separated values inside curly braces: `{a,b,c}`
2. **sequences**: which are defined using a starting value and an ending value, separated by two dots: `a{1..3}b`. Optionally, a third argument may be passed to define a "step" or increment to use: `a{1..100..10}b`. These are also sometimes referred to as "ranges".
Here are some example brace patterns to illustrate how they work:
**Sets**
```
{a,b,c} => a b c
{a,b,c}{1,2} => a1 a2 b1 b2 c1 c2
```
**Sequences**
```
{1..9} => 1 2 3 4 5 6 7 8 9
{4..-4} => 4 3 2 1 0 -1 -2 -3 -4
{1..20..3} => 1 4 7 10 13 16 19
{a..j} => a b c d e f g h i j
{j..a} => j i h g f e d c b a
{a..z..3} => a d g j m p s v y
```
**Combination**
Sets and sequences can be mixed together or used along with any other strings.
```
{a,b,c}{1..3} => a1 a2 a3 b1 b2 b3 c1 c2 c3
foo/{a,b,c}/bar => foo/a/bar foo/b/bar foo/c/bar
```
The fact that braces can be "expanded" from relatively simple patterns makes them ideal for quickly generating test fixtures, file paths, and similar use cases.
## Brace matching
In addition to _expansion_, brace patterns are also useful for performing regular-expression-like matching.
For example, the pattern `foo/{1..3}/bar` would match any of following strings:
```
foo/1/bar
foo/2/bar
foo/3/bar
```
But not:
```
baz/1/qux
baz/2/qux
baz/3/qux
```
Braces can also be combined with [glob patterns](https://github.com/jonschlinkert/micromatch) to perform more advanced wildcard matching. For example, the pattern `*/{1..3}/*` would match any of following strings:
```
foo/1/bar
foo/2/bar
foo/3/bar
baz/1/qux
baz/2/qux
baz/3/qux
```
## Brace matching pitfalls
Although brace patterns offer a user-friendly way of matching ranges or sets of strings, there are also some major disadvantages and potential risks you should be aware of.
### tldr
**"brace bombs"**
- brace expansion can eat up a huge amount of processing resources
- as brace patterns increase _linearly in size_, the system resources required to expand the pattern increase exponentially
- users can accidentally (or intentially) exhaust your system's resources resulting in the equivalent of a DoS attack (bonus: no programming knowledge is required!)
For a more detailed explanation with examples, see the [geometric complexity](#geometric-complexity) section.
### The solution
Jump to the [performance section](#performance) to see how Braces solves this problem in comparison to other libraries.
### Geometric complexity
At minimum, brace patterns with sets limited to two elements have quadradic or `O(n^2)` complexity. But the complexity of the algorithm increases exponentially as the number of sets, _and elements per set_, increases, which is `O(n^c)`.
For example, the following sets demonstrate quadratic (`O(n^2)`) complexity:
```
{1,2}{3,4} => (2X2) => 13 14 23 24
{1,2}{3,4}{5,6} => (2X2X2) => 135 136 145 146 235 236 245 246
```
But add an element to a set, and we get a n-fold Cartesian product with `O(n^c)` complexity:
```
{1,2,3}{4,5,6}{7,8,9} => (3X3X3) => 147 148 149 157 158 159 167 168 169 247 248
249 257 258 259 267 268 269 347 348 349 357
358 359 367 368 369
```
Now, imagine how this complexity grows given that each element is a n-tuple:
```
{1..100}{1..100} => (100X100) => 10,000 elements (38.4 kB)
{1..100}{1..100}{1..100} => (100X100X100) => 1,000,000 elements (5.76 MB)
```
Although these examples are clearly contrived, they demonstrate how brace patterns can quickly grow out of control.
**More information**
Interested in learning more about brace expansion?
- [linuxjournal/bash-brace-expansion](http://www.linuxjournal.com/content/bash-brace-expansion)
- [rosettacode/Brace_expansion](https://rosettacode.org/wiki/Brace_expansion)
- [cartesian product](https://en.wikipedia.org/wiki/Cartesian_product)
</details>
## Performance
Braces is not only screaming fast, it's also more accurate the other brace expansion libraries.
### Better algorithms
Fortunately there is a solution to the ["brace bomb" problem](#brace-matching-pitfalls): _don't expand brace patterns into an array when they're used for matching_.
Instead, convert the pattern into an optimized regular expression. This is easier said than done, and braces is the only library that does this currently.
**The proof is in the numbers**
Minimatch gets exponentially slower as patterns increase in complexity, braces does not. The following results were generated using `braces()` and `minimatch.braceExpand()`, respectively.
| **Pattern** | **braces** | **[minimatch][]** |
| --------------------------- | ------------------- | ---------------------------- |
| `{1..9007199254740991}`[^1] | `298 B` (5ms 459μs) | N/A (freezes) |
| `{1..1000000000000000}` | `41 B` (1ms 15μs) | N/A (freezes) |
| `{1..100000000000000}` | `40 B` (890μs) | N/A (freezes) |
| `{1..10000000000000}` | `39 B` (2ms 49μs) | N/A (freezes) |
| `{1..1000000000000}` | `38 B` (608μs) | N/A (freezes) |
| `{1..100000000000}` | `37 B` (397μs) | N/A (freezes) |
| `{1..10000000000}` | `35 B` (983μs) | N/A (freezes) |
| `{1..1000000000}` | `34 B` (798μs) | N/A (freezes) |
| `{1..100000000}` | `33 B` (733μs) | N/A (freezes) |
| `{1..10000000}` | `32 B` (5ms 632μs) | `78.89 MB` (16s 388ms 569μs) |
| `{1..1000000}` | `31 B` (1ms 381μs) | `6.89 MB` (1s 496ms 887μs) |
| `{1..100000}` | `30 B` (950μs) | `588.89 kB` (146ms 921μs) |
| `{1..10000}` | `29 B` (1ms 114μs) | `48.89 kB` (14ms 187μs) |
| `{1..1000}` | `28 B` (760μs) | `3.89 kB` (1ms 453μs) |
| `{1..100}` | `22 B` (345μs) | `291 B` (196μs) |
| `{1..10}` | `10 B` (533μs) | `20 B` (37μs) |
| `{1..3}` | `7 B` (190μs) | `5 B` (27μs) |
### Faster algorithms
When you need expansion, braces is still much faster.
_(the following results were generated using `braces.expand()` and `minimatch.braceExpand()`, respectively)_
| **Pattern** | **braces** | **[minimatch][]** |
| --------------- | --------------------------- | ---------------------------- |
| `{1..10000000}` | `78.89 MB` (2s 698ms 642μs) | `78.89 MB` (18s 601ms 974μs) |
| `{1..1000000}` | `6.89 MB` (458ms 576μs) | `6.89 MB` (1s 491ms 621μs) |
| `{1..100000}` | `588.89 kB` (20ms 728μs) | `588.89 kB` (156ms 919μs) |
| `{1..10000}` | `48.89 kB` (2ms 202μs) | `48.89 kB` (13ms 641μs) |
| `{1..1000}` | `3.89 kB` (1ms 796μs) | `3.89 kB` (1ms 958μs) |
| `{1..100}` | `291 B` (424μs) | `291 B` (211μs) |
| `{1..10}` | `20 B` (487μs) | `20 B` (72μs) |
| `{1..3}` | `5 B` (166μs) | `5 B` (27μs) |
If you'd like to run these comparisons yourself, see [test/support/generate.js](test/support/generate.js).
## Benchmarks
### Running benchmarks
Install dev dependencies:
```bash
npm i -d && npm benchmark
```
### Latest results
Braces is more accurate, without sacrificing performance.
```bash
● expand - range (expanded)
braces x 53,167 ops/sec ±0.12% (102 runs sampled)
minimatch x 11,378 ops/sec ±0.10% (102 runs sampled)
● expand - range (optimized for regex)
braces x 373,442 ops/sec ±0.04% (100 runs sampled)
minimatch x 3,262 ops/sec ±0.18% (100 runs sampled)
● expand - nested ranges (expanded)
braces x 33,921 ops/sec ±0.09% (99 runs sampled)
minimatch x 10,855 ops/sec ±0.28% (100 runs sampled)
● expand - nested ranges (optimized for regex)
braces x 287,479 ops/sec ±0.52% (98 runs sampled)
minimatch x 3,219 ops/sec ±0.28% (101 runs sampled)
● expand - set (expanded)
braces x 238,243 ops/sec ±0.19% (97 runs sampled)
minimatch x 538,268 ops/sec ±0.31% (96 runs sampled)
● expand - set (optimized for regex)
braces x 321,844 ops/sec ±0.10% (97 runs sampled)
minimatch x 140,600 ops/sec ±0.15% (100 runs sampled)
● expand - nested sets (expanded)
braces x 165,371 ops/sec ±0.42% (96 runs sampled)
minimatch x 337,720 ops/sec ±0.28% (100 runs sampled)
● expand - nested sets (optimized for regex)
braces x 242,948 ops/sec ±0.12% (99 runs sampled)
minimatch x 87,403 ops/sec ±0.79% (96 runs sampled)
```
## About
<details>
<summary><strong>Contributing</strong></summary>
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
</details>
<details>
<summary><strong>Running Tests</strong></summary>
Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
```sh
$ npm install && npm test
```
</details>
<details>
<summary><strong>Building docs</strong></summary>
_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
To generate the readme, run the following command:
```sh
$ npm install -g verbose/verb#dev verb-generate-readme && verb
```
</details>
### Contributors
| **Commits** | **Contributor** |
| ----------- | ------------------------------------------------------------- |
| 197 | [jonschlinkert](https://github.com/jonschlinkert) |
| 4 | [doowb](https://github.com/doowb) |
| 1 | [es128](https://github.com/es128) |
| 1 | [eush77](https://github.com/eush77) |
| 1 | [hemanth](https://github.com/hemanth) |
| 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) |
### Author
**Jon Schlinkert**
- [GitHub Profile](https://github.com/jonschlinkert)
- [Twitter Profile](https://twitter.com/jonschlinkert)
- [LinkedIn Profile](https://linkedin.com/in/jonschlinkert)
### License
Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert).
Released under the [MIT License](LICENSE).
---
_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 08, 2019._

@ -0,0 +1,170 @@
'use strict';
const stringify = require('./lib/stringify');
const compile = require('./lib/compile');
const expand = require('./lib/expand');
const parse = require('./lib/parse');
/**
* Expand the given pattern or create a regex-compatible string.
*
* ```js
* const braces = require('braces');
* console.log(braces('{a,b,c}', { compile: true })); //=> ['(a|b|c)']
* console.log(braces('{a,b,c}')); //=> ['a', 'b', 'c']
* ```
* @param {String} `str`
* @param {Object} `options`
* @return {String}
* @api public
*/
const braces = (input, options = {}) => {
let output = [];
if (Array.isArray(input)) {
for (const pattern of input) {
const result = braces.create(pattern, options);
if (Array.isArray(result)) {
output.push(...result);
} else {
output.push(result);
}
}
} else {
output = [].concat(braces.create(input, options));
}
if (options && options.expand === true && options.nodupes === true) {
output = [...new Set(output)];
}
return output;
};
/**
* Parse the given `str` with the given `options`.
*
* ```js
* // braces.parse(pattern, [, options]);
* const ast = braces.parse('a/{b,c}/d');
* console.log(ast);
* ```
* @param {String} pattern Brace pattern to parse
* @param {Object} options
* @return {Object} Returns an AST
* @api public
*/
braces.parse = (input, options = {}) => parse(input, options);
/**
* Creates a braces string from an AST, or an AST node.
*
* ```js
* const braces = require('braces');
* let ast = braces.parse('foo/{a,b}/bar');
* console.log(stringify(ast.nodes[2])); //=> '{a,b}'
* ```
* @param {String} `input` Brace pattern or AST.
* @param {Object} `options`
* @return {Array} Returns an array of expanded values.
* @api public
*/
braces.stringify = (input, options = {}) => {
if (typeof input === 'string') {
return stringify(braces.parse(input, options), options);
}
return stringify(input, options);
};
/**
* Compiles a brace pattern into a regex-compatible, optimized string.
* This method is called by the main [braces](#braces) function by default.
*
* ```js
* const braces = require('braces');
* console.log(braces.compile('a/{b,c}/d'));
* //=> ['a/(b|c)/d']
* ```
* @param {String} `input` Brace pattern or AST.
* @param {Object} `options`
* @return {Array} Returns an array of expanded values.
* @api public
*/
braces.compile = (input, options = {}) => {
if (typeof input === 'string') {
input = braces.parse(input, options);
}
return compile(input, options);
};
/**
* Expands a brace pattern into an array. This method is called by the
* main [braces](#braces) function when `options.expand` is true. Before
* using this method it's recommended that you read the [performance notes](#performance))
* and advantages of using [.compile](#compile) instead.
*
* ```js
* const braces = require('braces');
* console.log(braces.expand('a/{b,c}/d'));
* //=> ['a/b/d', 'a/c/d'];
* ```
* @param {String} `pattern` Brace pattern
* @param {Object} `options`
* @return {Array} Returns an array of expanded values.
* @api public
*/
braces.expand = (input, options = {}) => {
if (typeof input === 'string') {
input = braces.parse(input, options);
}
let result = expand(input, options);
// filter out empty strings if specified
if (options.noempty === true) {
result = result.filter(Boolean);
}
// filter out duplicates if specified
if (options.nodupes === true) {
result = [...new Set(result)];
}
return result;
};
/**
* Processes a brace pattern and returns either an expanded array
* (if `options.expand` is true), a highly optimized regex-compatible string.
* This method is called by the main [braces](#braces) function.
*
* ```js
* const braces = require('braces');
* console.log(braces.create('user-{200..300}/project-{a,b,c}-{1..10}'))
* //=> 'user-(20[0-9]|2[1-9][0-9]|300)/project-(a|b|c)-([1-9]|10)'
* ```
* @param {String} `pattern` Brace pattern
* @param {Object} `options`
* @return {Array} Returns an array of expanded values.
* @api public
*/
braces.create = (input, options = {}) => {
if (input === '' || input.length < 3) {
return [input];
}
return options.expand !== true
? braces.compile(input, options)
: braces.expand(input, options);
};
/**
* Expose "braces"
*/
module.exports = braces;

@ -0,0 +1,60 @@
'use strict';
const fill = require('fill-range');
const utils = require('./utils');
const compile = (ast, options = {}) => {
const walk = (node, parent = {}) => {
const invalidBlock = utils.isInvalidBrace(parent);
const invalidNode = node.invalid === true && options.escapeInvalid === true;
const invalid = invalidBlock === true || invalidNode === true;
const prefix = options.escapeInvalid === true ? '\\' : '';
let output = '';
if (node.isOpen === true) {
return prefix + node.value;
}
if (node.isClose === true) {
console.log('node.isClose', prefix, node.value);
return prefix + node.value;
}
if (node.type === 'open') {
return invalid ? prefix + node.value : '(';
}
if (node.type === 'close') {
return invalid ? prefix + node.value : ')';
}
if (node.type === 'comma') {
return node.prev.type === 'comma' ? '' : invalid ? node.value : '|';
}
if (node.value) {
return node.value;
}
if (node.nodes && node.ranges > 0) {
const args = utils.reduce(node.nodes);
const range = fill(...args, { ...options, wrap: false, toRegex: true, strictZeros: true });
if (range.length !== 0) {
return args.length > 1 && range.length > 1 ? `(${range})` : range;
}
}
if (node.nodes) {
for (const child of node.nodes) {
output += walk(child, node);
}
}
return output;
};
return walk(ast);
};
module.exports = compile;

@ -0,0 +1,57 @@
'use strict';
module.exports = {
MAX_LENGTH: 10000,
// Digits
CHAR_0: '0', /* 0 */
CHAR_9: '9', /* 9 */
// Alphabet chars.
CHAR_UPPERCASE_A: 'A', /* A */
CHAR_LOWERCASE_A: 'a', /* a */
CHAR_UPPERCASE_Z: 'Z', /* Z */
CHAR_LOWERCASE_Z: 'z', /* z */
CHAR_LEFT_PARENTHESES: '(', /* ( */
CHAR_RIGHT_PARENTHESES: ')', /* ) */
CHAR_ASTERISK: '*', /* * */
// Non-alphabetic chars.
CHAR_AMPERSAND: '&', /* & */
CHAR_AT: '@', /* @ */
CHAR_BACKSLASH: '\\', /* \ */
CHAR_BACKTICK: '`', /* ` */
CHAR_CARRIAGE_RETURN: '\r', /* \r */
CHAR_CIRCUMFLEX_ACCENT: '^', /* ^ */
CHAR_COLON: ':', /* : */
CHAR_COMMA: ',', /* , */
CHAR_DOLLAR: '$', /* . */
CHAR_DOT: '.', /* . */
CHAR_DOUBLE_QUOTE: '"', /* " */
CHAR_EQUAL: '=', /* = */
CHAR_EXCLAMATION_MARK: '!', /* ! */
CHAR_FORM_FEED: '\f', /* \f */
CHAR_FORWARD_SLASH: '/', /* / */
CHAR_HASH: '#', /* # */
CHAR_HYPHEN_MINUS: '-', /* - */
CHAR_LEFT_ANGLE_BRACKET: '<', /* < */
CHAR_LEFT_CURLY_BRACE: '{', /* { */
CHAR_LEFT_SQUARE_BRACKET: '[', /* [ */
CHAR_LINE_FEED: '\n', /* \n */
CHAR_NO_BREAK_SPACE: '\u00A0', /* \u00A0 */
CHAR_PERCENT: '%', /* % */
CHAR_PLUS: '+', /* + */
CHAR_QUESTION_MARK: '?', /* ? */
CHAR_RIGHT_ANGLE_BRACKET: '>', /* > */
CHAR_RIGHT_CURLY_BRACE: '}', /* } */
CHAR_RIGHT_SQUARE_BRACKET: ']', /* ] */
CHAR_SEMICOLON: ';', /* ; */
CHAR_SINGLE_QUOTE: '\'', /* ' */
CHAR_SPACE: ' ', /* */
CHAR_TAB: '\t', /* \t */
CHAR_UNDERSCORE: '_', /* _ */
CHAR_VERTICAL_LINE: '|', /* | */
CHAR_ZERO_WIDTH_NOBREAK_SPACE: '\uFEFF' /* \uFEFF */
};

@ -0,0 +1,113 @@
'use strict';
const fill = require('fill-range');
const stringify = require('./stringify');
const utils = require('./utils');
const append = (queue = '', stash = '', enclose = false) => {
const result = [];
queue = [].concat(queue);
stash = [].concat(stash);
if (!stash.length) return queue;
if (!queue.length) {
return enclose ? utils.flatten(stash).map(ele => `{${ele}}`) : stash;
}
for (const item of queue) {
if (Array.isArray(item)) {
for (const value of item) {
result.push(append(value, stash, enclose));
}
} else {
for (let ele of stash) {
if (enclose === true && typeof ele === 'string') ele = `{${ele}}`;
result.push(Array.isArray(ele) ? append(item, ele, enclose) : item + ele);
}
}
}
return utils.flatten(result);
};
const expand = (ast, options = {}) => {
const rangeLimit = options.rangeLimit === undefined ? 1000 : options.rangeLimit;
const walk = (node, parent = {}) => {
node.queue = [];
let p = parent;
let q = parent.queue;
while (p.type !== 'brace' && p.type !== 'root' && p.parent) {
p = p.parent;
q = p.queue;
}
if (node.invalid || node.dollar) {
q.push(append(q.pop(), stringify(node, options)));
return;
}
if (node.type === 'brace' && node.invalid !== true && node.nodes.length === 2) {
q.push(append(q.pop(), ['{}']));
return;
}
if (node.nodes && node.ranges > 0) {
const args = utils.reduce(node.nodes);
if (utils.exceedsLimit(...args, options.step, rangeLimit)) {
throw new RangeError('expanded array length exceeds range limit. Use options.rangeLimit to increase or disable the limit.');
}
let range = fill(...args, options);
if (range.length === 0) {
range = stringify(node, options);
}
q.push(append(q.pop(), range));
node.nodes = [];
return;
}
const enclose = utils.encloseBrace(node);
let queue = node.queue;
let block = node;
while (block.type !== 'brace' && block.type !== 'root' && block.parent) {
block = block.parent;
queue = block.queue;
}
for (let i = 0; i < node.nodes.length; i++) {
const child = node.nodes[i];
if (child.type === 'comma' && node.type === 'brace') {
if (i === 1) queue.push('');
queue.push('');
continue;
}
if (child.type === 'close') {
q.push(append(q.pop(), queue, enclose));
continue;
}
if (child.value && child.type !== 'open') {
queue.push(append(queue.pop(), child.value));
continue;
}
if (child.nodes) {
walk(child, node);
}
}
return queue;
};
return utils.flatten(walk(ast));
};
module.exports = expand;

@ -0,0 +1,331 @@
'use strict';
const stringify = require('./stringify');
/**
* Constants
*/
const {
MAX_LENGTH,
CHAR_BACKSLASH, /* \ */
CHAR_BACKTICK, /* ` */
CHAR_COMMA, /* , */
CHAR_DOT, /* . */
CHAR_LEFT_PARENTHESES, /* ( */
CHAR_RIGHT_PARENTHESES, /* ) */
CHAR_LEFT_CURLY_BRACE, /* { */
CHAR_RIGHT_CURLY_BRACE, /* } */
CHAR_LEFT_SQUARE_BRACKET, /* [ */
CHAR_RIGHT_SQUARE_BRACKET, /* ] */
CHAR_DOUBLE_QUOTE, /* " */
CHAR_SINGLE_QUOTE, /* ' */
CHAR_NO_BREAK_SPACE,
CHAR_ZERO_WIDTH_NOBREAK_SPACE
} = require('./constants');
/**
* parse
*/
const parse = (input, options = {}) => {
if (typeof input !== 'string') {
throw new TypeError('Expected a string');
}
const opts = options || {};
const max = typeof opts.maxLength === 'number' ? Math.min(MAX_LENGTH, opts.maxLength) : MAX_LENGTH;
if (input.length > max) {
throw new SyntaxError(`Input length (${input.length}), exceeds max characters (${max})`);
}
const ast = { type: 'root', input, nodes: [] };
const stack = [ast];
let block = ast;
let prev = ast;
let brackets = 0;
const length = input.length;
let index = 0;
let depth = 0;
let value;
/**
* Helpers
*/
const advance = () => input[index++];
const push = node => {
if (node.type === 'text' && prev.type === 'dot') {
prev.type = 'text';
}
if (prev && prev.type === 'text' && node.type === 'text') {
prev.value += node.value;
return;
}
block.nodes.push(node);
node.parent = block;
node.prev = prev;
prev = node;
return node;
};
push({ type: 'bos' });
while (index < length) {
block = stack[stack.length - 1];
value = advance();
/**
* Invalid chars
*/
if (value === CHAR_ZERO_WIDTH_NOBREAK_SPACE || value === CHAR_NO_BREAK_SPACE) {
continue;
}
/**
* Escaped chars
*/
if (value === CHAR_BACKSLASH) {
push({ type: 'text', value: (options.keepEscaping ? value : '') + advance() });
continue;
}
/**
* Right square bracket (literal): ']'
*/
if (value === CHAR_RIGHT_SQUARE_BRACKET) {
push({ type: 'text', value: '\\' + value });
continue;
}
/**
* Left square bracket: '['
*/
if (value === CHAR_LEFT_SQUARE_BRACKET) {
brackets++;
let next;
while (index < length && (next = advance())) {
value += next;
if (next === CHAR_LEFT_SQUARE_BRACKET) {
brackets++;
continue;
}
if (next === CHAR_BACKSLASH) {
value += advance();
continue;
}
if (next === CHAR_RIGHT_SQUARE_BRACKET) {
brackets--;
if (brackets === 0) {
break;
}
}
}
push({ type: 'text', value });
continue;
}
/**
* Parentheses
*/
if (value === CHAR_LEFT_PARENTHESES) {
block = push({ type: 'paren', nodes: [] });
stack.push(block);
push({ type: 'text', value });
continue;
}
if (value === CHAR_RIGHT_PARENTHESES) {
if (block.type !== 'paren') {
push({ type: 'text', value });
continue;
}
block = stack.pop();
push({ type: 'text', value });
block = stack[stack.length - 1];
continue;
}
/**
* Quotes: '|"|`
*/
if (value === CHAR_DOUBLE_QUOTE || value === CHAR_SINGLE_QUOTE || value === CHAR_BACKTICK) {
const open = value;
let next;
if (options.keepQuotes !== true) {
value = '';
}
while (index < length && (next = advance())) {
if (next === CHAR_BACKSLASH) {
value += next + advance();
continue;
}
if (next === open) {
if (options.keepQuotes === true) value += next;
break;
}
value += next;
}
push({ type: 'text', value });
continue;
}
/**
* Left curly brace: '{'
*/
if (value === CHAR_LEFT_CURLY_BRACE) {
depth++;
const dollar = prev.value && prev.value.slice(-1) === '$' || block.dollar === true;
const brace = {
type: 'brace',
open: true,
close: false,
dollar,
depth,
commas: 0,
ranges: 0,
nodes: []
};
block = push(brace);
stack.push(block);
push({ type: 'open', value });
continue;
}
/**
* Right curly brace: '}'
*/
if (value === CHAR_RIGHT_CURLY_BRACE) {
if (block.type !== 'brace') {
push({ type: 'text', value });
continue;
}
const type = 'close';
block = stack.pop();
block.close = true;
push({ type, value });
depth--;
block = stack[stack.length - 1];
continue;
}
/**
* Comma: ','
*/
if (value === CHAR_COMMA && depth > 0) {
if (block.ranges > 0) {
block.ranges = 0;
const open = block.nodes.shift();
block.nodes = [open, { type: 'text', value: stringify(block) }];
}
push({ type: 'comma', value });
block.commas++;
continue;
}
/**
* Dot: '.'
*/
if (value === CHAR_DOT && depth > 0 && block.commas === 0) {
const siblings = block.nodes;
if (depth === 0 || siblings.length === 0) {
push({ type: 'text', value });
continue;
}
if (prev.type === 'dot') {
block.range = [];
prev.value += value;
prev.type = 'range';
if (block.nodes.length !== 3 && block.nodes.length !== 5) {
block.invalid = true;
block.ranges = 0;
prev.type = 'text';
continue;
}
block.ranges++;
block.args = [];
continue;
}
if (prev.type === 'range') {
siblings.pop();
const before = siblings[siblings.length - 1];
before.value += prev.value + value;
prev = before;
block.ranges--;
continue;
}
push({ type: 'dot', value });
continue;
}
/**
* Text
*/
push({ type: 'text', value });
}
// Mark imbalanced braces and brackets as invalid
do {
block = stack.pop();
if (block.type !== 'root') {
block.nodes.forEach(node => {
if (!node.nodes) {
if (node.type === 'open') node.isOpen = true;
if (node.type === 'close') node.isClose = true;
if (!node.nodes) node.type = 'text';
node.invalid = true;
}
});
// get the location of the block on parent.nodes (block's siblings)
const parent = stack[stack.length - 1];
const index = parent.nodes.indexOf(block);
// replace the (invalid) block with it's nodes
parent.nodes.splice(index, 1, ...block.nodes);
}
} while (stack.length > 0);
push({ type: 'eos' });
return ast;
};
module.exports = parse;

@ -0,0 +1,32 @@
'use strict';
const utils = require('./utils');
module.exports = (ast, options = {}) => {
const stringify = (node, parent = {}) => {
const invalidBlock = options.escapeInvalid && utils.isInvalidBrace(parent);
const invalidNode = node.invalid === true && options.escapeInvalid === true;
let output = '';
if (node.value) {
if ((invalidBlock || invalidNode) && utils.isOpenOrClose(node)) {
return '\\' + node.value;
}
return node.value;
}
if (node.value) {
return node.value;
}
if (node.nodes) {
for (const child of node.nodes) {
output += stringify(child);
}
}
return output;
};
return stringify(ast);
};

@ -0,0 +1,122 @@
'use strict';
exports.isInteger = num => {
if (typeof num === 'number') {
return Number.isInteger(num);
}
if (typeof num === 'string' && num.trim() !== '') {
return Number.isInteger(Number(num));
}
return false;
};
/**
* Find a node of the given type
*/
exports.find = (node, type) => node.nodes.find(node => node.type === type);
/**
* Find a node of the given type
*/
exports.exceedsLimit = (min, max, step = 1, limit) => {
if (limit === false) return false;
if (!exports.isInteger(min) || !exports.isInteger(max)) return false;
return ((Number(max) - Number(min)) / Number(step)) >= limit;
};
/**
* Escape the given node with '\\' before node.value
*/
exports.escapeNode = (block, n = 0, type) => {
const node = block.nodes[n];
if (!node) return;
if ((type && node.type === type) || node.type === 'open' || node.type === 'close') {
if (node.escaped !== true) {
node.value = '\\' + node.value;
node.escaped = true;
}
}
};
/**
* Returns true if the given brace node should be enclosed in literal braces
*/
exports.encloseBrace = node => {
if (node.type !== 'brace') return false;
if ((node.commas >> 0 + node.ranges >> 0) === 0) {
node.invalid = true;
return true;
}
return false;
};
/**
* Returns true if a brace node is invalid.
*/
exports.isInvalidBrace = block => {
if (block.type !== 'brace') return false;
if (block.invalid === true || block.dollar) return true;
if ((block.commas >> 0 + block.ranges >> 0) === 0) {
block.invalid = true;
return true;
}
if (block.open !== true || block.close !== true) {
block.invalid = true;
return true;
}
return false;
};
/**
* Returns true if a node is an open or close node
*/
exports.isOpenOrClose = node => {
if (node.type === 'open' || node.type === 'close') {
return true;
}
return node.open === true || node.close === true;
};
/**
* Reduce an array of text nodes.
*/
exports.reduce = nodes => nodes.reduce((acc, node) => {
if (node.type === 'text') acc.push(node.value);
if (node.type === 'range') node.type = 'text';
return acc;
}, []);
/**
* Flatten an array
*/
exports.flatten = (...args) => {
const result = [];
const flat = arr => {
for (let i = 0; i < arr.length; i++) {
const ele = arr[i];
if (Array.isArray(ele)) {
flat(ele);
continue;
}
if (ele !== undefined) {
result.push(ele);
}
}
return result;
};
flat(args);
return result;
};

@ -0,0 +1,77 @@
{
"name": "braces",
"description": "Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed.",
"version": "3.0.3",
"homepage": "https://github.com/micromatch/braces",
"author": "Jon Schlinkert (https://github.com/jonschlinkert)",
"contributors": [
"Brian Woodward (https://twitter.com/doowb)",
"Elan Shanker (https://github.com/es128)",
"Eugene Sharygin (https://github.com/eush77)",
"hemanth.hm (http://h3manth.com)",
"Jon Schlinkert (http://twitter.com/jonschlinkert)"
],
"repository": "micromatch/braces",
"bugs": {
"url": "https://github.com/micromatch/braces/issues"
},
"license": "MIT",
"files": [
"index.js",
"lib"
],
"main": "index.js",
"engines": {
"node": ">=8"
},
"scripts": {
"test": "mocha",
"benchmark": "node benchmark"
},
"dependencies": {
"fill-range": "^7.1.1"
},
"devDependencies": {
"ansi-colors": "^3.2.4",
"bash-path": "^2.0.1",
"gulp-format-md": "^2.0.0",
"mocha": "^6.1.1"
},
"keywords": [
"alpha",
"alphabetical",
"bash",
"brace",
"braces",
"expand",
"expansion",
"filepath",
"fill",
"fs",
"glob",
"globbing",
"letter",
"match",
"matches",
"matching",
"number",
"numerical",
"path",
"range",
"ranges",
"sh"
],
"verb": {
"toc": false,
"layout": "default",
"tasks": [
"readme"
],
"lint": {
"reflinks": true
},
"plugins": [
"gulp-format-md"
]
}
}

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2012-2019 Paul Miller (https://paulmillr.com), Elan Shanker
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the “Software”), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

@ -0,0 +1,308 @@
# Chokidar [![Weekly downloads](https://img.shields.io/npm/dw/chokidar.svg)](https://github.com/paulmillr/chokidar) [![Yearly downloads](https://img.shields.io/npm/dy/chokidar.svg)](https://github.com/paulmillr/chokidar)
> Minimal and efficient cross-platform file watching library
[![NPM](https://nodei.co/npm/chokidar.png)](https://www.npmjs.com/package/chokidar)
## Why?
Node.js `fs.watch`:
* Doesn't report filenames on MacOS.
* Doesn't report events at all when using editors like Sublime on MacOS.
* Often reports events twice.
* Emits most changes as `rename`.
* Does not provide an easy way to recursively watch file trees.
* Does not support recursive watching on Linux.
Node.js `fs.watchFile`:
* Almost as bad at event handling.
* Also does not provide any recursive watching.
* Results in high CPU utilization.
Chokidar resolves these problems.
Initially made for **[Brunch](https://brunch.io/)** (an ultra-swift web app build tool), it is now used in
[Microsoft's Visual Studio Code](https://github.com/microsoft/vscode),
[gulp](https://github.com/gulpjs/gulp/),
[karma](https://karma-runner.github.io/),
[PM2](https://github.com/Unitech/PM2),
[browserify](http://browserify.org/),
[webpack](https://webpack.github.io/),
[BrowserSync](https://www.browsersync.io/),
and [many others](https://www.npmjs.com/browse/depended/chokidar).
It has proven itself in production environments.
Version 3 is out! Check out our blog post about it: [Chokidar 3: How to save 32TB of traffic every week](https://paulmillr.com/posts/chokidar-3-save-32tb-of-traffic/)
## How?
Chokidar does still rely on the Node.js core `fs` module, but when using
`fs.watch` and `fs.watchFile` for watching, it normalizes the events it
receives, often checking for truth by getting file stats and/or dir contents.
On MacOS, chokidar by default uses a native extension exposing the Darwin
`FSEvents` API. This provides very efficient recursive watching compared with
implementations like `kqueue` available on most \*nix platforms. Chokidar still
does have to do some work to normalize the events received that way as well.
On most other platforms, the `fs.watch`-based implementation is the default, which
avoids polling and keeps CPU usage down. Be advised that chokidar will initiate
watchers recursively for everything within scope of the paths that have been
specified, so be judicious about not wasting system resources by watching much
more than needed.
## Getting started
Install with npm:
```sh
npm install chokidar
```
Then `require` and use it in your code:
```javascript
const chokidar = require('chokidar');
// One-liner for current directory
chokidar.watch('.').on('all', (event, path) => {
console.log(event, path);
});
```
## API
```javascript
// Example of a more typical implementation structure
// Initialize watcher.
const watcher = chokidar.watch('file, dir, glob, or array', {
ignored: /(^|[\/\\])\../, // ignore dotfiles
persistent: true
});
// Something to use when events are received.
const log = console.log.bind(console);
// Add event listeners.
watcher
.on('add', path => log(`File ${path} has been added`))
.on('change', path => log(`File ${path} has been changed`))
.on('unlink', path => log(`File ${path} has been removed`));
// More possible events.
watcher
.on('addDir', path => log(`Directory ${path} has been added`))
.on('unlinkDir', path => log(`Directory ${path} has been removed`))
.on('error', error => log(`Watcher error: ${error}`))
.on('ready', () => log('Initial scan complete. Ready for changes'))
.on('raw', (event, path, details) => { // internal
log('Raw event info:', event, path, details);
});
// 'add', 'addDir' and 'change' events also receive stat() results as second
// argument when available: https://nodejs.org/api/fs.html#fs_class_fs_stats
watcher.on('change', (path, stats) => {
if (stats) console.log(`File ${path} changed size to ${stats.size}`);
});
// Watch new files.
watcher.add('new-file');
watcher.add(['new-file-2', 'new-file-3', '**/other-file*']);
// Get list of actual paths being watched on the filesystem
var watchedPaths = watcher.getWatched();
// Un-watch some files.
await watcher.unwatch('new-file*');
// Stop watching.
// The method is async!
watcher.close().then(() => console.log('closed'));
// Full list of options. See below for descriptions.
// Do not use this example!
chokidar.watch('file', {
persistent: true,
ignored: '*.txt',
ignoreInitial: false,
followSymlinks: true,
cwd: '.',
disableGlobbing: false,
usePolling: false,
interval: 100,
binaryInterval: 300,
alwaysStat: false,
depth: 99,
awaitWriteFinish: {
stabilityThreshold: 2000,
pollInterval: 100
},
ignorePermissionErrors: false,
atomic: true // or a custom 'atomicity delay', in milliseconds (default 100)
});
```
`chokidar.watch(paths, [options])`
* `paths` (string or array of strings). Paths to files, dirs to be watched
recursively, or glob patterns.
- Note: globs must not contain windows separators (`\`),
because that's how they work by the standard —
you'll need to replace them with forward slashes (`/`).
- Note 2: for additional glob documentation, check out low-level
library: [picomatch](https://github.com/micromatch/picomatch).
* `options` (object) Options object as defined below:
#### Persistence
* `persistent` (default: `true`). Indicates whether the process
should continue to run as long as files are being watched. If set to
`false` when using `fsevents` to watch, no more events will be emitted
after `ready`, even if the process continues to run.
#### Path filtering
* `ignored` ([anymatch](https://github.com/es128/anymatch)-compatible definition)
Defines files/paths to be ignored. The whole relative or absolute path is
tested, not just filename. If a function with two arguments is provided, it
gets called twice per path - once with a single argument (the path), second
time with two arguments (the path and the
[`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats)
object of that path).
* `ignoreInitial` (default: `false`). If set to `false` then `add`/`addDir` events are also emitted for matching paths while
instantiating the watching as chokidar discovers these file paths (before the `ready` event).
* `followSymlinks` (default: `true`). When `false`, only the
symlinks themselves will be watched for changes instead of following
the link references and bubbling events through the link's path.
* `cwd` (no default). The base directory from which watch `paths` are to be
derived. Paths emitted with events will be relative to this.
* `disableGlobbing` (default: `false`). If set to `true` then the strings passed to `.watch()` and `.add()` are treated as
literal path names, even if they look like globs.
#### Performance
* `usePolling` (default: `false`).
Whether to use fs.watchFile (backed by polling), or fs.watch. If polling
leads to high CPU utilization, consider setting this to `false`. It is
typically necessary to **set this to `true` to successfully watch files over
a network**, and it may be necessary to successfully watch files in other
non-standard situations. Setting to `true` explicitly on MacOS overrides the
`useFsEvents` default. You may also set the CHOKIDAR_USEPOLLING env variable
to true (1) or false (0) in order to override this option.
* _Polling-specific settings_ (effective when `usePolling: true`)
* `interval` (default: `100`). Interval of file system polling, in milliseconds. You may also
set the CHOKIDAR_INTERVAL env variable to override this option.
* `binaryInterval` (default: `300`). Interval of file system
polling for binary files.
([see list of binary extensions](https://github.com/sindresorhus/binary-extensions/blob/master/binary-extensions.json))
* `useFsEvents` (default: `true` on MacOS). Whether to use the
`fsevents` watching interface if available. When set to `true` explicitly
and `fsevents` is available this supercedes the `usePolling` setting. When
set to `false` on MacOS, `usePolling: true` becomes the default.
* `alwaysStat` (default: `false`). If relying upon the
[`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats)
object that may get passed with `add`, `addDir`, and `change` events, set
this to `true` to ensure it is provided even in cases where it wasn't
already available from the underlying watch events.
* `depth` (default: `undefined`). If set, limits how many levels of
subdirectories will be traversed.
* `awaitWriteFinish` (default: `false`).
By default, the `add` event will fire when a file first appears on disk, before
the entire file has been written. Furthermore, in some cases some `change`
events will be emitted while the file is being written. In some cases,
especially when watching for large files there will be a need to wait for the
write operation to finish before responding to a file creation or modification.
Setting `awaitWriteFinish` to `true` (or a truthy value) will poll file size,
holding its `add` and `change` events until the size does not change for a
configurable amount of time. The appropriate duration setting is heavily
dependent on the OS and hardware. For accurate detection this parameter should
be relatively high, making file watching much less responsive.
Use with caution.
* *`options.awaitWriteFinish` can be set to an object in order to adjust
timing params:*
* `awaitWriteFinish.stabilityThreshold` (default: 2000). Amount of time in
milliseconds for a file size to remain constant before emitting its event.
* `awaitWriteFinish.pollInterval` (default: 100). File size polling interval, in milliseconds.
#### Errors
* `ignorePermissionErrors` (default: `false`). Indicates whether to watch files
that don't have read permissions if possible. If watching fails due to `EPERM`
or `EACCES` with this set to `true`, the errors will be suppressed silently.
* `atomic` (default: `true` if `useFsEvents` and `usePolling` are `false`).
Automatically filters out artifacts that occur when using editors that use
"atomic writes" instead of writing directly to the source file. If a file is
re-added within 100 ms of being deleted, Chokidar emits a `change` event
rather than `unlink` then `add`. If the default of 100 ms does not work well
for you, you can override it by setting `atomic` to a custom value, in
milliseconds.
### Methods & Events
`chokidar.watch()` produces an instance of `FSWatcher`. Methods of `FSWatcher`:
* `.add(path / paths)`: Add files, directories, or glob patterns for tracking.
Takes an array of strings or just one string.
* `.on(event, callback)`: Listen for an FS event.
Available events: `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `ready`,
`raw`, `error`.
Additionally `all` is available which gets emitted with the underlying event
name and path for every event other than `ready`, `raw`, and `error`. `raw` is internal, use it carefully.
* `.unwatch(path / paths)`: Stop watching files, directories, or glob patterns.
Takes an array of strings or just one string.
* `.close()`: **async** Removes all listeners from watched files. Asynchronous, returns Promise. Use with `await` to ensure bugs don't happen.
* `.getWatched()`: Returns an object representing all the paths on the file
system being watched by this `FSWatcher` instance. The object's keys are all the
directories (using absolute paths unless the `cwd` option was used), and the
values are arrays of the names of the items contained in each directory.
## CLI
If you need a CLI interface for your file watching, check out
[chokidar-cli](https://github.com/open-cli-tools/chokidar-cli), allowing you to
execute a command on each change, or get a stdio stream of change events.
## Install Troubleshooting
* `npm WARN optional dep failed, continuing fsevents@n.n.n`
* This message is normal part of how `npm` handles optional dependencies and is
not indicative of a problem. Even if accompanied by other related error messages,
Chokidar should function properly.
* `TypeError: fsevents is not a constructor`
* Update chokidar by doing `rm -rf node_modules package-lock.json yarn.lock && npm install`, or update your dependency that uses chokidar.
* Chokidar is producing `ENOSP` error on Linux, like this:
* `bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell`
`Error: watch /home/ ENOSPC`
* This means Chokidar ran out of file handles and you'll need to increase their count by executing the following command in Terminal:
`echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p`
## Changelog
For more detailed changelog, see [`full_changelog.md`](.github/full_changelog.md).
- **v3.5 (Jan 6, 2021):** Support for ARM Macs with Apple Silicon. Fixes for deleted symlinks.
- **v3.4 (Apr 26, 2020):** Support for directory-based symlinks. Fixes for macos file replacement.
- **v3.3 (Nov 2, 2019):** `FSWatcher#close()` method became async. That fixes IO race conditions related to close method.
- **v3.2 (Oct 1, 2019):** Improve Linux RAM usage by 50%. Race condition fixes. Windows glob fixes. Improve stability by using tight range of dependency versions.
- **v3.1 (Sep 16, 2019):** dotfiles are no longer filtered out by default. Use `ignored` option if needed. Improve initial Linux scan time by 50%.
- **v3 (Apr 30, 2019):** massive CPU & RAM consumption improvements; reduces deps / package size by a factor of 17x and bumps Node.js requirement to v8.16 and higher.
- **v2 (Dec 29, 2017):** Globs are now posix-style-only; without windows support. Tons of bugfixes.
- **v1 (Apr 7, 2015):** Glob support, symlink support, tons of bugfixes. Node 0.8+ is supported
- **v0.1 (Apr 20, 2012):** Initial release, extracted from [Brunch](https://github.com/brunch/brunch/blob/9847a065aea300da99bd0753f90354cde9de1261/src/helpers.coffee#L66)
## Also
Why was chokidar named this way? What's the meaning behind it?
>Chowkidar is a transliteration of a Hindi word meaning 'watchman, gatekeeper', चौकीदार. This ultimately comes from Sanskrit _ चतुष्क_ (crossway, quadrangle, consisting-of-four). This word is also used in other languages like Urdu as (چوکیدار) which is widely used in Pakistan and India.
## License
MIT (c) Paul Miller (<https://paulmillr.com>), see [LICENSE](LICENSE) file.

@ -0,0 +1,973 @@
'use strict';
const { EventEmitter } = require('events');
const fs = require('fs');
const sysPath = require('path');
const { promisify } = require('util');
const readdirp = require('readdirp');
const anymatch = require('anymatch').default;
const globParent = require('glob-parent');
const isGlob = require('is-glob');
const braces = require('braces');
const normalizePath = require('normalize-path');
const NodeFsHandler = require('./lib/nodefs-handler');
const FsEventsHandler = require('./lib/fsevents-handler');
const {
EV_ALL,
EV_READY,
EV_ADD,
EV_CHANGE,
EV_UNLINK,
EV_ADD_DIR,
EV_UNLINK_DIR,
EV_RAW,
EV_ERROR,
STR_CLOSE,
STR_END,
BACK_SLASH_RE,
DOUBLE_SLASH_RE,
SLASH_OR_BACK_SLASH_RE,
DOT_RE,
REPLACER_RE,
SLASH,
SLASH_SLASH,
BRACE_START,
BANG,
ONE_DOT,
TWO_DOTS,
GLOBSTAR,
SLASH_GLOBSTAR,
ANYMATCH_OPTS,
STRING_TYPE,
FUNCTION_TYPE,
EMPTY_STR,
EMPTY_FN,
isWindows,
isMacos,
isIBMi
} = require('./lib/constants');
const stat = promisify(fs.stat);
const readdir = promisify(fs.readdir);
/**
* @typedef {String} Path
* @typedef {'all'|'add'|'addDir'|'change'|'unlink'|'unlinkDir'|'raw'|'error'|'ready'} EventName
* @typedef {'readdir'|'watch'|'add'|'remove'|'change'} ThrottleType
*/
/**
*
* @typedef {Object} WatchHelpers
* @property {Boolean} followSymlinks
* @property {'stat'|'lstat'} statMethod
* @property {Path} path
* @property {Path} watchPath
* @property {Function} entryPath
* @property {Boolean} hasGlob
* @property {Object} globFilter
* @property {Function} filterPath
* @property {Function} filterDir
*/
const arrify = (value = []) => Array.isArray(value) ? value : [value];
const flatten = (list, result = []) => {
list.forEach(item => {
if (Array.isArray(item)) {
flatten(item, result);
} else {
result.push(item);
}
});
return result;
};
const unifyPaths = (paths_) => {
/**
* @type {Array<String>}
*/
const paths = flatten(arrify(paths_));
if (!paths.every(p => typeof p === STRING_TYPE)) {
throw new TypeError(`Non-string provided as watch path: ${paths}`);
}
return paths.map(normalizePathToUnix);
};
// If SLASH_SLASH occurs at the beginning of path, it is not replaced
// because "//StoragePC/DrivePool/Movies" is a valid network path
const toUnix = (string) => {
let str = string.replace(BACK_SLASH_RE, SLASH);
let prepend = false;
if (str.startsWith(SLASH_SLASH)) {
prepend = true;
}
while (str.match(DOUBLE_SLASH_RE)) {
str = str.replace(DOUBLE_SLASH_RE, SLASH);
}
if (prepend) {
str = SLASH + str;
}
return str;
};
// Our version of upath.normalize
// TODO: this is not equal to path-normalize module - investigate why
const normalizePathToUnix = (path) => toUnix(sysPath.normalize(toUnix(path)));
const normalizeIgnored = (cwd = EMPTY_STR) => (path) => {
if (typeof path !== STRING_TYPE) return path;
return normalizePathToUnix(sysPath.isAbsolute(path) ? path : sysPath.join(cwd, path));
};
const getAbsolutePath = (path, cwd) => {
if (sysPath.isAbsolute(path)) {
return path;
}
if (path.startsWith(BANG)) {
return BANG + sysPath.join(cwd, path.slice(1));
}
return sysPath.join(cwd, path);
};
const undef = (opts, key) => opts[key] === undefined;
/**
* Directory entry.
* @property {Path} path
* @property {Set<Path>} items
*/
class DirEntry {
/**
* @param {Path} dir
* @param {Function} removeWatcher
*/
constructor(dir, removeWatcher) {
this.path = dir;
this._removeWatcher = removeWatcher;
/** @type {Set<Path>} */
this.items = new Set();
}
add(item) {
const {items} = this;
if (!items) return;
if (item !== ONE_DOT && item !== TWO_DOTS) items.add(item);
}
async remove(item) {
const {items} = this;
if (!items) return;
items.delete(item);
if (items.size > 0) return;
const dir = this.path;
try {
await readdir(dir);
} catch (err) {
if (this._removeWatcher) {
this._removeWatcher(sysPath.dirname(dir), sysPath.basename(dir));
}
}
}
has(item) {
const {items} = this;
if (!items) return;
return items.has(item);
}
/**
* @returns {Array<String>}
*/
getChildren() {
const {items} = this;
if (!items) return;
return [...items.values()];
}
dispose() {
this.items.clear();
delete this.path;
delete this._removeWatcher;
delete this.items;
Object.freeze(this);
}
}
const STAT_METHOD_F = 'stat';
const STAT_METHOD_L = 'lstat';
class WatchHelper {
constructor(path, watchPath, follow, fsw) {
this.fsw = fsw;
this.path = path = path.replace(REPLACER_RE, EMPTY_STR);
this.watchPath = watchPath;
this.fullWatchPath = sysPath.resolve(watchPath);
this.hasGlob = watchPath !== path;
/** @type {object|boolean} */
if (path === EMPTY_STR) this.hasGlob = false;
this.globSymlink = this.hasGlob && follow ? undefined : false;
this.globFilter = this.hasGlob ? anymatch(path, undefined, ANYMATCH_OPTS) : false;
this.dirParts = this.getDirParts(path);
this.dirParts.forEach((parts) => {
if (parts.length > 1) parts.pop();
});
this.followSymlinks = follow;
this.statMethod = follow ? STAT_METHOD_F : STAT_METHOD_L;
}
checkGlobSymlink(entry) {
// only need to resolve once
// first entry should always have entry.parentDir === EMPTY_STR
if (this.globSymlink === undefined) {
this.globSymlink = entry.fullParentDir === this.fullWatchPath ?
false : {realPath: entry.fullParentDir, linkPath: this.fullWatchPath};
}
if (this.globSymlink) {
return entry.fullPath.replace(this.globSymlink.realPath, this.globSymlink.linkPath);
}
return entry.fullPath;
}
entryPath(entry) {
return sysPath.join(this.watchPath,
sysPath.relative(this.watchPath, this.checkGlobSymlink(entry))
);
}
filterPath(entry) {
const {stats} = entry;
if (stats && stats.isSymbolicLink()) return this.filterDir(entry);
const resolvedPath = this.entryPath(entry);
const matchesGlob = this.hasGlob && typeof this.globFilter === FUNCTION_TYPE ?
this.globFilter(resolvedPath) : true;
return matchesGlob &&
this.fsw._isntIgnored(resolvedPath, stats) &&
this.fsw._hasReadPermissions(stats);
}
getDirParts(path) {
if (!this.hasGlob) return [];
const parts = [];
const expandedPath = path.includes(BRACE_START) ? braces.expand(path) : [path];
expandedPath.forEach((path) => {
parts.push(sysPath.relative(this.watchPath, path).split(SLASH_OR_BACK_SLASH_RE));
});
return parts;
}
filterDir(entry) {
if (this.hasGlob) {
const entryParts = this.getDirParts(this.checkGlobSymlink(entry));
let globstar = false;
this.unmatchedGlob = !this.dirParts.some((parts) => {
return parts.every((part, i) => {
if (part === GLOBSTAR) globstar = true;
return globstar || !entryParts[0][i] || anymatch(part, entryParts[0][i], ANYMATCH_OPTS);
});
});
}
return !this.unmatchedGlob && this.fsw._isntIgnored(this.entryPath(entry), entry.stats);
}
}
/**
* Watches files & directories for changes. Emitted events:
* `add`, `addDir`, `change`, `unlink`, `unlinkDir`, `all`, `error`
*
* new FSWatcher()
* .add(directories)
* .on('add', path => log('File', path, 'was added'))
*/
class FSWatcher extends EventEmitter {
// Not indenting methods for history sake; for now.
constructor(_opts) {
super();
const opts = {};
if (_opts) Object.assign(opts, _opts); // for frozen objects
/** @type {Map<String, DirEntry>} */
this._watched = new Map();
/** @type {Map<String, Array>} */
this._closers = new Map();
/** @type {Set<String>} */
this._ignoredPaths = new Set();
/** @type {Map<ThrottleType, Map>} */
this._throttled = new Map();
/** @type {Map<Path, String|Boolean>} */
this._symlinkPaths = new Map();
this._streams = new Set();
this.closed = false;
// Set up default options.
if (undef(opts, 'persistent')) opts.persistent = true;
if (undef(opts, 'ignoreInitial')) opts.ignoreInitial = false;
if (undef(opts, 'ignorePermissionErrors')) opts.ignorePermissionErrors = false;
if (undef(opts, 'interval')) opts.interval = 100;
if (undef(opts, 'binaryInterval')) opts.binaryInterval = 300;
if (undef(opts, 'disableGlobbing')) opts.disableGlobbing = false;
opts.enableBinaryInterval = opts.binaryInterval !== opts.interval;
// Enable fsevents on OS X when polling isn't explicitly enabled.
if (undef(opts, 'useFsEvents')) opts.useFsEvents = !opts.usePolling;
// If we can't use fsevents, ensure the options reflect it's disabled.
const canUseFsEvents = FsEventsHandler.canUse();
if (!canUseFsEvents) opts.useFsEvents = false;
// Use polling on Mac if not using fsevents.
// Other platforms use non-polling fs_watch.
if (undef(opts, 'usePolling') && !opts.useFsEvents) {
opts.usePolling = isMacos;
}
// Always default to polling on IBM i because fs.watch() is not available on IBM i.
if(isIBMi) {
opts.usePolling = true;
}
// Global override (useful for end-developers that need to force polling for all
// instances of chokidar, regardless of usage/dependency depth)
const envPoll = process.env.CHOKIDAR_USEPOLLING;
if (envPoll !== undefined) {
const envLower = envPoll.toLowerCase();
if (envLower === 'false' || envLower === '0') {
opts.usePolling = false;
} else if (envLower === 'true' || envLower === '1') {
opts.usePolling = true;
} else {
opts.usePolling = !!envLower;
}
}
const envInterval = process.env.CHOKIDAR_INTERVAL;
if (envInterval) {
opts.interval = Number.parseInt(envInterval, 10);
}
// Editor atomic write normalization enabled by default with fs.watch
if (undef(opts, 'atomic')) opts.atomic = !opts.usePolling && !opts.useFsEvents;
if (opts.atomic) this._pendingUnlinks = new Map();
if (undef(opts, 'followSymlinks')) opts.followSymlinks = true;
if (undef(opts, 'awaitWriteFinish')) opts.awaitWriteFinish = false;
if (opts.awaitWriteFinish === true) opts.awaitWriteFinish = {};
const awf = opts.awaitWriteFinish;
if (awf) {
if (!awf.stabilityThreshold) awf.stabilityThreshold = 2000;
if (!awf.pollInterval) awf.pollInterval = 100;
this._pendingWrites = new Map();
}
if (opts.ignored) opts.ignored = arrify(opts.ignored);
let readyCalls = 0;
this._emitReady = () => {
readyCalls++;
if (readyCalls >= this._readyCount) {
this._emitReady = EMPTY_FN;
this._readyEmitted = true;
// use process.nextTick to allow time for listener to be bound
process.nextTick(() => this.emit(EV_READY));
}
};
this._emitRaw = (...args) => this.emit(EV_RAW, ...args);
this._readyEmitted = false;
this.options = opts;
// Initialize with proper watcher.
if (opts.useFsEvents) {
this._fsEventsHandler = new FsEventsHandler(this);
} else {
this._nodeFsHandler = new NodeFsHandler(this);
}
// Youre frozen when your hearts not open.
Object.freeze(opts);
}
// Public methods
/**
* Adds paths to be watched on an existing FSWatcher instance
* @param {Path|Array<Path>} paths_
* @param {String=} _origAdd private; for handling non-existent paths to be watched
* @param {Boolean=} _internal private; indicates a non-user add
* @returns {FSWatcher} for chaining
*/
add(paths_, _origAdd, _internal) {
const {cwd, disableGlobbing} = this.options;
this.closed = false;
let paths = unifyPaths(paths_);
if (cwd) {
paths = paths.map((path) => {
const absPath = getAbsolutePath(path, cwd);
// Check `path` instead of `absPath` because the cwd portion can't be a glob
if (disableGlobbing || !isGlob(path)) {
return absPath;
}
return normalizePath(absPath);
});
}
// set aside negated glob strings
paths = paths.filter((path) => {
if (path.startsWith(BANG)) {
this._ignoredPaths.add(path.slice(1));
return false;
}
// if a path is being added that was previously ignored, stop ignoring it
this._ignoredPaths.delete(path);
this._ignoredPaths.delete(path + SLASH_GLOBSTAR);
// reset the cached userIgnored anymatch fn
// to make ignoredPaths changes effective
this._userIgnored = undefined;
return true;
});
if (this.options.useFsEvents && this._fsEventsHandler) {
if (!this._readyCount) this._readyCount = paths.length;
if (this.options.persistent) this._readyCount += paths.length;
paths.forEach((path) => this._fsEventsHandler._addToFsEvents(path));
} else {
if (!this._readyCount) this._readyCount = 0;
this._readyCount += paths.length;
Promise.all(
paths.map(async path => {
const res = await this._nodeFsHandler._addToNodeFs(path, !_internal, 0, 0, _origAdd);
if (res) this._emitReady();
return res;
})
).then(results => {
if (this.closed) return;
results.filter(item => item).forEach(item => {
this.add(sysPath.dirname(item), sysPath.basename(_origAdd || item));
});
});
}
return this;
}
/**
* Close watchers or start ignoring events from specified paths.
* @param {Path|Array<Path>} paths_ - string or array of strings, file/directory paths and/or globs
* @returns {FSWatcher} for chaining
*/
unwatch(paths_) {
if (this.closed) return this;
const paths = unifyPaths(paths_);
const {cwd} = this.options;
paths.forEach((path) => {
// convert to absolute path unless relative path already matches
if (!sysPath.isAbsolute(path) && !this._closers.has(path)) {
if (cwd) path = sysPath.join(cwd, path);
path = sysPath.resolve(path);
}
this._closePath(path);
this._ignoredPaths.add(path);
if (this._watched.has(path)) {
this._ignoredPaths.add(path + SLASH_GLOBSTAR);
}
// reset the cached userIgnored anymatch fn
// to make ignoredPaths changes effective
this._userIgnored = undefined;
});
return this;
}
/**
* Close watchers and remove all listeners from watched paths.
* @returns {Promise<void>}.
*/
close() {
if (this.closed) return this._closePromise;
this.closed = true;
// Memory management.
this.removeAllListeners();
const closers = [];
this._closers.forEach(closerList => closerList.forEach(closer => {
const promise = closer();
if (promise instanceof Promise) closers.push(promise);
}));
this._streams.forEach(stream => stream.destroy());
this._userIgnored = undefined;
this._readyCount = 0;
this._readyEmitted = false;
this._watched.forEach(dirent => dirent.dispose());
['closers', 'watched', 'streams', 'symlinkPaths', 'throttled'].forEach(key => {
this[`_${key}`].clear();
});
this._closePromise = closers.length ? Promise.all(closers).then(() => undefined) : Promise.resolve();
return this._closePromise;
}
/**
* Expose list of watched paths
* @returns {Object} for chaining
*/
getWatched() {
const watchList = {};
this._watched.forEach((entry, dir) => {
const key = this.options.cwd ? sysPath.relative(this.options.cwd, dir) : dir;
watchList[key || ONE_DOT] = entry.getChildren().sort();
});
return watchList;
}
emitWithAll(event, args) {
this.emit(...args);
if (event !== EV_ERROR) this.emit(EV_ALL, ...args);
}
// Common helpers
// --------------
/**
* Normalize and emit events.
* Calling _emit DOES NOT MEAN emit() would be called!
* @param {EventName} event Type of event
* @param {Path} path File or directory path
* @param {*=} val1 arguments to be passed with event
* @param {*=} val2
* @param {*=} val3
* @returns the error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
async _emit(event, path, val1, val2, val3) {
if (this.closed) return;
const opts = this.options;
if (isWindows) path = sysPath.normalize(path);
if (opts.cwd) path = sysPath.relative(opts.cwd, path);
/** @type Array<any> */
const args = [event, path];
if (val3 !== undefined) args.push(val1, val2, val3);
else if (val2 !== undefined) args.push(val1, val2);
else if (val1 !== undefined) args.push(val1);
const awf = opts.awaitWriteFinish;
let pw;
if (awf && (pw = this._pendingWrites.get(path))) {
pw.lastChange = new Date();
return this;
}
if (opts.atomic) {
if (event === EV_UNLINK) {
this._pendingUnlinks.set(path, args);
setTimeout(() => {
this._pendingUnlinks.forEach((entry, path) => {
this.emit(...entry);
this.emit(EV_ALL, ...entry);
this._pendingUnlinks.delete(path);
});
}, typeof opts.atomic === 'number' ? opts.atomic : 100);
return this;
}
if (event === EV_ADD && this._pendingUnlinks.has(path)) {
event = args[0] = EV_CHANGE;
this._pendingUnlinks.delete(path);
}
}
if (awf && (event === EV_ADD || event === EV_CHANGE) && this._readyEmitted) {
const awfEmit = (err, stats) => {
if (err) {
event = args[0] = EV_ERROR;
args[1] = err;
this.emitWithAll(event, args);
} else if (stats) {
// if stats doesn't exist the file must have been deleted
if (args.length > 2) {
args[2] = stats;
} else {
args.push(stats);
}
this.emitWithAll(event, args);
}
};
this._awaitWriteFinish(path, awf.stabilityThreshold, event, awfEmit);
return this;
}
if (event === EV_CHANGE) {
const isThrottled = !this._throttle(EV_CHANGE, path, 50);
if (isThrottled) return this;
}
if (opts.alwaysStat && val1 === undefined &&
(event === EV_ADD || event === EV_ADD_DIR || event === EV_CHANGE)
) {
const fullPath = opts.cwd ? sysPath.join(opts.cwd, path) : path;
let stats;
try {
stats = await stat(fullPath);
} catch (err) {}
// Suppress event when fs_stat fails, to avoid sending undefined 'stat'
if (!stats || this.closed) return;
args.push(stats);
}
this.emitWithAll(event, args);
return this;
}
/**
* Common handler for errors
* @param {Error} error
* @returns {Error|Boolean} The error if defined, otherwise the value of the FSWatcher instance's `closed` flag
*/
_handleError(error) {
const code = error && error.code;
if (error && code !== 'ENOENT' && code !== 'ENOTDIR' &&
(!this.options.ignorePermissionErrors || (code !== 'EPERM' && code !== 'EACCES'))
) {
this.emit(EV_ERROR, error);
}
return error || this.closed;
}
/**
* Helper utility for throttling
* @param {ThrottleType} actionType type being throttled
* @param {Path} path being acted upon
* @param {Number} timeout duration of time to suppress duplicate actions
* @returns {Object|false} tracking object or false if action should be suppressed
*/
_throttle(actionType, path, timeout) {
if (!this._throttled.has(actionType)) {
this._throttled.set(actionType, new Map());
}
/** @type {Map<Path, Object>} */
const action = this._throttled.get(actionType);
/** @type {Object} */
const actionPath = action.get(path);
if (actionPath) {
actionPath.count++;
return false;
}
let timeoutObject;
const clear = () => {
const item = action.get(path);
const count = item ? item.count : 0;
action.delete(path);
clearTimeout(timeoutObject);
if (item) clearTimeout(item.timeoutObject);
return count;
};
timeoutObject = setTimeout(clear, timeout);
const thr = {timeoutObject, clear, count: 0};
action.set(path, thr);
return thr;
}
_incrReadyCount() {
return this._readyCount++;
}
/**
* Awaits write operation to finish.
* Polls a newly created file for size variations. When files size does not change for 'threshold' milliseconds calls callback.
* @param {Path} path being acted upon
* @param {Number} threshold Time in milliseconds a file size must be fixed before acknowledging write OP is finished
* @param {EventName} event
* @param {Function} awfEmit Callback to be called when ready for event to be emitted.
*/
_awaitWriteFinish(path, threshold, event, awfEmit) {
let timeoutHandler;
let fullPath = path;
if (this.options.cwd && !sysPath.isAbsolute(path)) {
fullPath = sysPath.join(this.options.cwd, path);
}
const now = new Date();
const awaitWriteFinish = (prevStat) => {
fs.stat(fullPath, (err, curStat) => {
if (err || !this._pendingWrites.has(path)) {
if (err && err.code !== 'ENOENT') awfEmit(err);
return;
}
const now = Number(new Date());
if (prevStat && curStat.size !== prevStat.size) {
this._pendingWrites.get(path).lastChange = now;
}
const pw = this._pendingWrites.get(path);
const df = now - pw.lastChange;
if (df >= threshold) {
this._pendingWrites.delete(path);
awfEmit(undefined, curStat);
} else {
timeoutHandler = setTimeout(
awaitWriteFinish,
this.options.awaitWriteFinish.pollInterval,
curStat
);
}
});
};
if (!this._pendingWrites.has(path)) {
this._pendingWrites.set(path, {
lastChange: now,
cancelWait: () => {
this._pendingWrites.delete(path);
clearTimeout(timeoutHandler);
return event;
}
});
timeoutHandler = setTimeout(
awaitWriteFinish,
this.options.awaitWriteFinish.pollInterval
);
}
}
_getGlobIgnored() {
return [...this._ignoredPaths.values()];
}
/**
* Determines whether user has asked to ignore this path.
* @param {Path} path filepath or dir
* @param {fs.Stats=} stats result of fs.stat
* @returns {Boolean}
*/
_isIgnored(path, stats) {
if (this.options.atomic && DOT_RE.test(path)) return true;
if (!this._userIgnored) {
const {cwd} = this.options;
const ign = this.options.ignored;
const ignored = ign && ign.map(normalizeIgnored(cwd));
const paths = arrify(ignored)
.filter((path) => typeof path === STRING_TYPE && !isGlob(path))
.map((path) => path + SLASH_GLOBSTAR);
const list = this._getGlobIgnored().map(normalizeIgnored(cwd)).concat(ignored, paths);
this._userIgnored = anymatch(list, undefined, ANYMATCH_OPTS);
}
return this._userIgnored([path, stats]);
}
_isntIgnored(path, stat) {
return !this._isIgnored(path, stat);
}
/**
* Provides a set of common helpers and properties relating to symlink and glob handling.
* @param {Path} path file, directory, or glob pattern being watched
* @param {Number=} depth at any depth > 0, this isn't a glob
* @returns {WatchHelper} object containing helpers for this path
*/
_getWatchHelpers(path, depth) {
const watchPath = depth || this.options.disableGlobbing || !isGlob(path) ? path : globParent(path);
const follow = this.options.followSymlinks;
return new WatchHelper(path, watchPath, follow, this);
}
// Directory helpers
// -----------------
/**
* Provides directory tracking objects
* @param {String} directory path of the directory
* @returns {DirEntry} the directory's tracking object
*/
_getWatchedDir(directory) {
if (!this._boundRemove) this._boundRemove = this._remove.bind(this);
const dir = sysPath.resolve(directory);
if (!this._watched.has(dir)) this._watched.set(dir, new DirEntry(dir, this._boundRemove));
return this._watched.get(dir);
}
// File helpers
// ------------
/**
* Check for read permissions.
* Based on this answer on SO: https://stackoverflow.com/a/11781404/1358405
* @param {fs.Stats} stats - object, result of fs_stat
* @returns {Boolean} indicates whether the file can be read
*/
_hasReadPermissions(stats) {
if (this.options.ignorePermissionErrors) return true;
// stats.mode may be bigint
const md = stats && Number.parseInt(stats.mode, 10);
const st = md & 0o777;
const it = Number.parseInt(st.toString(8)[0], 10);
return Boolean(4 & it);
}
/**
* Handles emitting unlink events for
* files and directories, and via recursion, for
* files and directories within directories that are unlinked
* @param {String} directory within which the following item is located
* @param {String} item base path of item/directory
* @returns {void}
*/
_remove(directory, item, isDirectory) {
// if what is being deleted is a directory, get that directory's paths
// for recursive deleting and cleaning of watched object
// if it is not a directory, nestedDirectoryChildren will be empty array
const path = sysPath.join(directory, item);
const fullPath = sysPath.resolve(path);
isDirectory = isDirectory != null
? isDirectory
: this._watched.has(path) || this._watched.has(fullPath);
// prevent duplicate handling in case of arriving here nearly simultaneously
// via multiple paths (such as _handleFile and _handleDir)
if (!this._throttle('remove', path, 100)) return;
// if the only watched file is removed, watch for its return
if (!isDirectory && !this.options.useFsEvents && this._watched.size === 1) {
this.add(directory, item, true);
}
// This will create a new entry in the watched object in either case
// so we got to do the directory check beforehand
const wp = this._getWatchedDir(path);
const nestedDirectoryChildren = wp.getChildren();
// Recursively remove children directories / files.
nestedDirectoryChildren.forEach(nested => this._remove(path, nested));
// Check if item was on the watched list and remove it
const parent = this._getWatchedDir(directory);
const wasTracked = parent.has(item);
parent.remove(item);
// Fixes issue #1042 -> Relative paths were detected and added as symlinks
// (https://github.com/paulmillr/chokidar/blob/e1753ddbc9571bdc33b4a4af172d52cb6e611c10/lib/nodefs-handler.js#L612),
// but never removed from the map in case the path was deleted.
// This leads to an incorrect state if the path was recreated:
// https://github.com/paulmillr/chokidar/blob/e1753ddbc9571bdc33b4a4af172d52cb6e611c10/lib/nodefs-handler.js#L553
if (this._symlinkPaths.has(fullPath)) {
this._symlinkPaths.delete(fullPath);
}
// If we wait for this file to be fully written, cancel the wait.
let relPath = path;
if (this.options.cwd) relPath = sysPath.relative(this.options.cwd, path);
if (this.options.awaitWriteFinish && this._pendingWrites.has(relPath)) {
const event = this._pendingWrites.get(relPath).cancelWait();
if (event === EV_ADD) return;
}
// The Entry will either be a directory that just got removed
// or a bogus entry to a file, in either case we have to remove it
this._watched.delete(path);
this._watched.delete(fullPath);
const eventName = isDirectory ? EV_UNLINK_DIR : EV_UNLINK;
if (wasTracked && !this._isIgnored(path)) this._emit(eventName, path);
// Avoid conflicts if we later create another file with the same name
if (!this.options.useFsEvents) {
this._closePath(path);
}
}
/**
* Closes all watchers for a path
* @param {Path} path
*/
_closePath(path) {
this._closeFile(path)
const dir = sysPath.dirname(path);
this._getWatchedDir(dir).remove(sysPath.basename(path));
}
/**
* Closes only file-specific watchers
* @param {Path} path
*/
_closeFile(path) {
const closers = this._closers.get(path);
if (!closers) return;
closers.forEach(closer => closer());
this._closers.delete(path);
}
/**
*
* @param {Path} path
* @param {Function} closer
*/
_addPathCloser(path, closer) {
if (!closer) return;
let list = this._closers.get(path);
if (!list) {
list = [];
this._closers.set(path, list);
}
list.push(closer);
}
_readdirp(root, opts) {
if (this.closed) return;
const options = {type: EV_ALL, alwaysStat: true, lstat: true, ...opts};
let stream = readdirp(root, options);
this._streams.add(stream);
stream.once(STR_CLOSE, () => {
stream = undefined;
});
stream.once(STR_END, () => {
if (stream) {
this._streams.delete(stream);
stream = undefined;
}
});
return stream;
}
}
// Export FSWatcher class
exports.FSWatcher = FSWatcher;
/**
* Instantiates watcher with paths to be tracked.
* @param {String|Array<String>} paths file/directory paths and/or globs
* @param {Object=} options chokidar opts
* @returns an instance of FSWatcher for chaining.
*/
const watch = (paths, options) => {
const watcher = new FSWatcher(options);
watcher.add(paths);
return watcher;
};
exports.watch = watch;

@ -0,0 +1,66 @@
'use strict';
const {sep} = require('path');
const {platform} = process;
const os = require('os');
exports.EV_ALL = 'all';
exports.EV_READY = 'ready';
exports.EV_ADD = 'add';
exports.EV_CHANGE = 'change';
exports.EV_ADD_DIR = 'addDir';
exports.EV_UNLINK = 'unlink';
exports.EV_UNLINK_DIR = 'unlinkDir';
exports.EV_RAW = 'raw';
exports.EV_ERROR = 'error';
exports.STR_DATA = 'data';
exports.STR_END = 'end';
exports.STR_CLOSE = 'close';
exports.FSEVENT_CREATED = 'created';
exports.FSEVENT_MODIFIED = 'modified';
exports.FSEVENT_DELETED = 'deleted';
exports.FSEVENT_MOVED = 'moved';
exports.FSEVENT_CLONED = 'cloned';
exports.FSEVENT_UNKNOWN = 'unknown';
exports.FSEVENT_FLAG_MUST_SCAN_SUBDIRS = 1;
exports.FSEVENT_TYPE_FILE = 'file';
exports.FSEVENT_TYPE_DIRECTORY = 'directory';
exports.FSEVENT_TYPE_SYMLINK = 'symlink';
exports.KEY_LISTENERS = 'listeners';
exports.KEY_ERR = 'errHandlers';
exports.KEY_RAW = 'rawEmitters';
exports.HANDLER_KEYS = [exports.KEY_LISTENERS, exports.KEY_ERR, exports.KEY_RAW];
exports.DOT_SLASH = `.${sep}`;
exports.BACK_SLASH_RE = /\\/g;
exports.DOUBLE_SLASH_RE = /\/\//;
exports.SLASH_OR_BACK_SLASH_RE = /[/\\]/;
exports.DOT_RE = /\..*\.(sw[px])$|~$|\.subl.*\.tmp/;
exports.REPLACER_RE = /^\.[/\\]/;
exports.SLASH = '/';
exports.SLASH_SLASH = '//';
exports.BRACE_START = '{';
exports.BANG = '!';
exports.ONE_DOT = '.';
exports.TWO_DOTS = '..';
exports.STAR = '*';
exports.GLOBSTAR = '**';
exports.ROOT_GLOBSTAR = '/**/*';
exports.SLASH_GLOBSTAR = '/**';
exports.DIR_SUFFIX = 'Dir';
exports.ANYMATCH_OPTS = {dot: true};
exports.STRING_TYPE = 'string';
exports.FUNCTION_TYPE = 'function';
exports.EMPTY_STR = '';
exports.EMPTY_FN = () => {};
exports.IDENTITY_FN = val => val;
exports.isWindows = platform === 'win32';
exports.isMacos = platform === 'darwin';
exports.isLinux = platform === 'linux';
exports.isIBMi = os.type() === 'OS400';

@ -0,0 +1,526 @@
'use strict';
const fs = require('fs');
const sysPath = require('path');
const { promisify } = require('util');
let fsevents;
try {
fsevents = require('fsevents');
} catch (error) {
if (process.env.CHOKIDAR_PRINT_FSEVENTS_REQUIRE_ERROR) console.error(error);
}
if (fsevents) {
// TODO: real check
const mtch = process.version.match(/v(\d+)\.(\d+)/);
if (mtch && mtch[1] && mtch[2]) {
const maj = Number.parseInt(mtch[1], 10);
const min = Number.parseInt(mtch[2], 10);
if (maj === 8 && min < 16) {
fsevents = undefined;
}
}
}
const {
EV_ADD,
EV_CHANGE,
EV_ADD_DIR,
EV_UNLINK,
EV_ERROR,
STR_DATA,
STR_END,
FSEVENT_CREATED,
FSEVENT_MODIFIED,
FSEVENT_DELETED,
FSEVENT_MOVED,
// FSEVENT_CLONED,
FSEVENT_UNKNOWN,
FSEVENT_FLAG_MUST_SCAN_SUBDIRS,
FSEVENT_TYPE_FILE,
FSEVENT_TYPE_DIRECTORY,
FSEVENT_TYPE_SYMLINK,
ROOT_GLOBSTAR,
DIR_SUFFIX,
DOT_SLASH,
FUNCTION_TYPE,
EMPTY_FN,
IDENTITY_FN
} = require('./constants');
const Depth = (value) => isNaN(value) ? {} : {depth: value};
const stat = promisify(fs.stat);
const lstat = promisify(fs.lstat);
const realpath = promisify(fs.realpath);
const statMethods = { stat, lstat };
/**
* @typedef {String} Path
*/
/**
* @typedef {Object} FsEventsWatchContainer
* @property {Set<Function>} listeners
* @property {Function} rawEmitter
* @property {{stop: Function}} watcher
*/
// fsevents instance helper functions
/**
* Object to hold per-process fsevents instances (may be shared across chokidar FSWatcher instances)
* @type {Map<Path,FsEventsWatchContainer>}
*/
const FSEventsWatchers = new Map();
// Threshold of duplicate path prefixes at which to start
// consolidating going forward
const consolidateThreshhold = 10;
const wrongEventFlags = new Set([
69888, 70400, 71424, 72704, 73472, 131328, 131840, 262912
]);
/**
* Instantiates the fsevents interface
* @param {Path} path path to be watched
* @param {Function} callback called when fsevents is bound and ready
* @returns {{stop: Function}} new fsevents instance
*/
const createFSEventsInstance = (path, callback) => {
const stop = fsevents.watch(path, callback);
return {stop};
};
/**
* Instantiates the fsevents interface or binds listeners to an existing one covering
* the same file tree.
* @param {Path} path - to be watched
* @param {Path} realPath - real path for symlinks
* @param {Function} listener - called when fsevents emits events
* @param {Function} rawEmitter - passes data to listeners of the 'raw' event
* @returns {Function} closer
*/
function setFSEventsListener(path, realPath, listener, rawEmitter) {
let watchPath = sysPath.extname(realPath) ? sysPath.dirname(realPath) : realPath;
const parentPath = sysPath.dirname(watchPath);
let cont = FSEventsWatchers.get(watchPath);
// If we've accumulated a substantial number of paths that
// could have been consolidated by watching one directory
// above the current one, create a watcher on the parent
// path instead, so that we do consolidate going forward.
if (couldConsolidate(parentPath)) {
watchPath = parentPath;
}
const resolvedPath = sysPath.resolve(path);
const hasSymlink = resolvedPath !== realPath;
const filteredListener = (fullPath, flags, info) => {
if (hasSymlink) fullPath = fullPath.replace(realPath, resolvedPath);
if (
fullPath === resolvedPath ||
!fullPath.indexOf(resolvedPath + sysPath.sep)
) listener(fullPath, flags, info);
};
// check if there is already a watcher on a parent path
// modifies `watchPath` to the parent path when it finds a match
let watchedParent = false;
for (const watchedPath of FSEventsWatchers.keys()) {
if (realPath.indexOf(sysPath.resolve(watchedPath) + sysPath.sep) === 0) {
watchPath = watchedPath;
cont = FSEventsWatchers.get(watchPath);
watchedParent = true;
break;
}
}
if (cont || watchedParent) {
cont.listeners.add(filteredListener);
} else {
cont = {
listeners: new Set([filteredListener]),
rawEmitter,
watcher: createFSEventsInstance(watchPath, (fullPath, flags) => {
if (!cont.listeners.size) return;
if (flags & FSEVENT_FLAG_MUST_SCAN_SUBDIRS) return;
const info = fsevents.getInfo(fullPath, flags);
cont.listeners.forEach(list => {
list(fullPath, flags, info);
});
cont.rawEmitter(info.event, fullPath, info);
})
};
FSEventsWatchers.set(watchPath, cont);
}
// removes this instance's listeners and closes the underlying fsevents
// instance if there are no more listeners left
return () => {
const lst = cont.listeners;
lst.delete(filteredListener);
if (!lst.size) {
FSEventsWatchers.delete(watchPath);
if (cont.watcher) return cont.watcher.stop().then(() => {
cont.rawEmitter = cont.watcher = undefined;
Object.freeze(cont);
});
}
};
}
// Decide whether or not we should start a new higher-level
// parent watcher
const couldConsolidate = (path) => {
let count = 0;
for (const watchPath of FSEventsWatchers.keys()) {
if (watchPath.indexOf(path) === 0) {
count++;
if (count >= consolidateThreshhold) {
return true;
}
}
}
return false;
};
// returns boolean indicating whether fsevents can be used
const canUse = () => fsevents && FSEventsWatchers.size < 128;
// determines subdirectory traversal levels from root to path
const calcDepth = (path, root) => {
let i = 0;
while (!path.indexOf(root) && (path = sysPath.dirname(path)) !== root) i++;
return i;
};
// returns boolean indicating whether the fsevents' event info has the same type
// as the one returned by fs.stat
const sameTypes = (info, stats) => (
info.type === FSEVENT_TYPE_DIRECTORY && stats.isDirectory() ||
info.type === FSEVENT_TYPE_SYMLINK && stats.isSymbolicLink() ||
info.type === FSEVENT_TYPE_FILE && stats.isFile()
)
/**
* @mixin
*/
class FsEventsHandler {
/**
* @param {import('../index').FSWatcher} fsw
*/
constructor(fsw) {
this.fsw = fsw;
}
checkIgnored(path, stats) {
const ipaths = this.fsw._ignoredPaths;
if (this.fsw._isIgnored(path, stats)) {
ipaths.add(path);
if (stats && stats.isDirectory()) {
ipaths.add(path + ROOT_GLOBSTAR);
}
return true;
}
ipaths.delete(path);
ipaths.delete(path + ROOT_GLOBSTAR);
}
addOrChange(path, fullPath, realPath, parent, watchedDir, item, info, opts) {
const event = watchedDir.has(item) ? EV_CHANGE : EV_ADD;
this.handleEvent(event, path, fullPath, realPath, parent, watchedDir, item, info, opts);
}
async checkExists(path, fullPath, realPath, parent, watchedDir, item, info, opts) {
try {
const stats = await stat(path)
if (this.fsw.closed) return;
if (sameTypes(info, stats)) {
this.addOrChange(path, fullPath, realPath, parent, watchedDir, item, info, opts);
} else {
this.handleEvent(EV_UNLINK, path, fullPath, realPath, parent, watchedDir, item, info, opts);
}
} catch (error) {
if (error.code === 'EACCES') {
this.addOrChange(path, fullPath, realPath, parent, watchedDir, item, info, opts);
} else {
this.handleEvent(EV_UNLINK, path, fullPath, realPath, parent, watchedDir, item, info, opts);
}
}
}
handleEvent(event, path, fullPath, realPath, parent, watchedDir, item, info, opts) {
if (this.fsw.closed || this.checkIgnored(path)) return;
if (event === EV_UNLINK) {
const isDirectory = info.type === FSEVENT_TYPE_DIRECTORY
// suppress unlink events on never before seen files
if (isDirectory || watchedDir.has(item)) {
this.fsw._remove(parent, item, isDirectory);
}
} else {
if (event === EV_ADD) {
// track new directories
if (info.type === FSEVENT_TYPE_DIRECTORY) this.fsw._getWatchedDir(path);
if (info.type === FSEVENT_TYPE_SYMLINK && opts.followSymlinks) {
// push symlinks back to the top of the stack to get handled
const curDepth = opts.depth === undefined ?
undefined : calcDepth(fullPath, realPath) + 1;
return this._addToFsEvents(path, false, true, curDepth);
}
// track new paths
// (other than symlinks being followed, which will be tracked soon)
this.fsw._getWatchedDir(parent).add(item);
}
/**
* @type {'add'|'addDir'|'unlink'|'unlinkDir'}
*/
const eventName = info.type === FSEVENT_TYPE_DIRECTORY ? event + DIR_SUFFIX : event;
this.fsw._emit(eventName, path);
if (eventName === EV_ADD_DIR) this._addToFsEvents(path, false, true);
}
}
/**
* Handle symlinks encountered during directory scan
* @param {String} watchPath - file/dir path to be watched with fsevents
* @param {String} realPath - real path (in case of symlinks)
* @param {Function} transform - path transformer
* @param {Function} globFilter - path filter in case a glob pattern was provided
* @returns {Function} closer for the watcher instance
*/
_watchWithFsEvents(watchPath, realPath, transform, globFilter) {
if (this.fsw.closed || this.fsw._isIgnored(watchPath)) return;
const opts = this.fsw.options;
const watchCallback = async (fullPath, flags, info) => {
if (this.fsw.closed) return;
if (
opts.depth !== undefined &&
calcDepth(fullPath, realPath) > opts.depth
) return;
const path = transform(sysPath.join(
watchPath, sysPath.relative(watchPath, fullPath)
));
if (globFilter && !globFilter(path)) return;
// ensure directories are tracked
const parent = sysPath.dirname(path);
const item = sysPath.basename(path);
const watchedDir = this.fsw._getWatchedDir(
info.type === FSEVENT_TYPE_DIRECTORY ? path : parent
);
// correct for wrong events emitted
if (wrongEventFlags.has(flags) || info.event === FSEVENT_UNKNOWN) {
if (typeof opts.ignored === FUNCTION_TYPE) {
let stats;
try {
stats = await stat(path);
} catch (error) {}
if (this.fsw.closed) return;
if (this.checkIgnored(path, stats)) return;
if (sameTypes(info, stats)) {
this.addOrChange(path, fullPath, realPath, parent, watchedDir, item, info, opts);
} else {
this.handleEvent(EV_UNLINK, path, fullPath, realPath, parent, watchedDir, item, info, opts);
}
} else {
this.checkExists(path, fullPath, realPath, parent, watchedDir, item, info, opts);
}
} else {
switch (info.event) {
case FSEVENT_CREATED:
case FSEVENT_MODIFIED:
return this.addOrChange(path, fullPath, realPath, parent, watchedDir, item, info, opts);
case FSEVENT_DELETED:
case FSEVENT_MOVED:
return this.checkExists(path, fullPath, realPath, parent, watchedDir, item, info, opts);
}
}
};
const closer = setFSEventsListener(
watchPath,
realPath,
watchCallback,
this.fsw._emitRaw
);
this.fsw._emitReady();
return closer;
}
/**
* Handle symlinks encountered during directory scan
* @param {String} linkPath path to symlink
* @param {String} fullPath absolute path to the symlink
* @param {Function} transform pre-existing path transformer
* @param {Number} curDepth level of subdirectories traversed to where symlink is
* @returns {Promise<void>}
*/
async _handleFsEventsSymlink(linkPath, fullPath, transform, curDepth) {
// don't follow the same symlink more than once
if (this.fsw.closed || this.fsw._symlinkPaths.has(fullPath)) return;
this.fsw._symlinkPaths.set(fullPath, true);
this.fsw._incrReadyCount();
try {
const linkTarget = await realpath(linkPath);
if (this.fsw.closed) return;
if (this.fsw._isIgnored(linkTarget)) {
return this.fsw._emitReady();
}
this.fsw._incrReadyCount();
// add the linkTarget for watching with a wrapper for transform
// that causes emitted paths to incorporate the link's path
this._addToFsEvents(linkTarget || linkPath, (path) => {
let aliasedPath = linkPath;
if (linkTarget && linkTarget !== DOT_SLASH) {
aliasedPath = path.replace(linkTarget, linkPath);
} else if (path !== DOT_SLASH) {
aliasedPath = sysPath.join(linkPath, path);
}
return transform(aliasedPath);
}, false, curDepth);
} catch(error) {
if (this.fsw._handleError(error)) {
return this.fsw._emitReady();
}
}
}
/**
*
* @param {Path} newPath
* @param {fs.Stats} stats
*/
emitAdd(newPath, stats, processPath, opts, forceAdd) {
const pp = processPath(newPath);
const isDir = stats.isDirectory();
const dirObj = this.fsw._getWatchedDir(sysPath.dirname(pp));
const base = sysPath.basename(pp);
// ensure empty dirs get tracked
if (isDir) this.fsw._getWatchedDir(pp);
if (dirObj.has(base)) return;
dirObj.add(base);
if (!opts.ignoreInitial || forceAdd === true) {
this.fsw._emit(isDir ? EV_ADD_DIR : EV_ADD, pp, stats);
}
}
initWatch(realPath, path, wh, processPath) {
if (this.fsw.closed) return;
const closer = this._watchWithFsEvents(
wh.watchPath,
sysPath.resolve(realPath || wh.watchPath),
processPath,
wh.globFilter
);
this.fsw._addPathCloser(path, closer);
}
/**
* Handle added path with fsevents
* @param {String} path file/dir path or glob pattern
* @param {Function|Boolean=} transform converts working path to what the user expects
* @param {Boolean=} forceAdd ensure add is emitted
* @param {Number=} priorDepth Level of subdirectories already traversed.
* @returns {Promise<void>}
*/
async _addToFsEvents(path, transform, forceAdd, priorDepth) {
if (this.fsw.closed) {
return;
}
const opts = this.fsw.options;
const processPath = typeof transform === FUNCTION_TYPE ? transform : IDENTITY_FN;
const wh = this.fsw._getWatchHelpers(path);
// evaluate what is at the path we're being asked to watch
try {
const stats = await statMethods[wh.statMethod](wh.watchPath);
if (this.fsw.closed) return;
if (this.fsw._isIgnored(wh.watchPath, stats)) {
throw null;
}
if (stats.isDirectory()) {
// emit addDir unless this is a glob parent
if (!wh.globFilter) this.emitAdd(processPath(path), stats, processPath, opts, forceAdd);
// don't recurse further if it would exceed depth setting
if (priorDepth && priorDepth > opts.depth) return;
// scan the contents of the dir
this.fsw._readdirp(wh.watchPath, {
fileFilter: entry => wh.filterPath(entry),
directoryFilter: entry => wh.filterDir(entry),
...Depth(opts.depth - (priorDepth || 0))
}).on(STR_DATA, (entry) => {
// need to check filterPath on dirs b/c filterDir is less restrictive
if (this.fsw.closed) {
return;
}
if (entry.stats.isDirectory() && !wh.filterPath(entry)) return;
const joinedPath = sysPath.join(wh.watchPath, entry.path);
const {fullPath} = entry;
if (wh.followSymlinks && entry.stats.isSymbolicLink()) {
// preserve the current depth here since it can't be derived from
// real paths past the symlink
const curDepth = opts.depth === undefined ?
undefined : calcDepth(joinedPath, sysPath.resolve(wh.watchPath)) + 1;
this._handleFsEventsSymlink(joinedPath, fullPath, processPath, curDepth);
} else {
this.emitAdd(joinedPath, entry.stats, processPath, opts, forceAdd);
}
}).on(EV_ERROR, EMPTY_FN).on(STR_END, () => {
this.fsw._emitReady();
});
} else {
this.emitAdd(wh.watchPath, stats, processPath, opts, forceAdd);
this.fsw._emitReady();
}
} catch (error) {
if (!error || this.fsw._handleError(error)) {
// TODO: Strange thing: "should not choke on an ignored watch path" will be failed without 2 ready calls -__-
this.fsw._emitReady();
this.fsw._emitReady();
}
}
if (opts.persistent && forceAdd !== true) {
if (typeof transform === FUNCTION_TYPE) {
// realpath has already been resolved
this.initWatch(undefined, path, wh, processPath);
} else {
let realPath;
try {
realPath = await realpath(wh.watchPath);
} catch (e) {}
this.initWatch(realPath, path, wh, processPath);
}
}
}
}
module.exports = FsEventsHandler;
module.exports.canUse = canUse;

@ -0,0 +1,654 @@
'use strict';
const fs = require('fs');
const sysPath = require('path');
const { promisify } = require('util');
const isBinaryPath = require('is-binary-path');
const {
isWindows,
isLinux,
EMPTY_FN,
EMPTY_STR,
KEY_LISTENERS,
KEY_ERR,
KEY_RAW,
HANDLER_KEYS,
EV_CHANGE,
EV_ADD,
EV_ADD_DIR,
EV_ERROR,
STR_DATA,
STR_END,
BRACE_START,
STAR
} = require('./constants');
const THROTTLE_MODE_WATCH = 'watch';
const open = promisify(fs.open);
const stat = promisify(fs.stat);
const lstat = promisify(fs.lstat);
const close = promisify(fs.close);
const fsrealpath = promisify(fs.realpath);
const statMethods = { lstat, stat };
// TODO: emit errors properly. Example: EMFILE on Macos.
const foreach = (val, fn) => {
if (val instanceof Set) {
val.forEach(fn);
} else {
fn(val);
}
};
const addAndConvert = (main, prop, item) => {
let container = main[prop];
if (!(container instanceof Set)) {
main[prop] = container = new Set([container]);
}
container.add(item);
};
const clearItem = cont => key => {
const set = cont[key];
if (set instanceof Set) {
set.clear();
} else {
delete cont[key];
}
};
const delFromSet = (main, prop, item) => {
const container = main[prop];
if (container instanceof Set) {
container.delete(item);
} else if (container === item) {
delete main[prop];
}
};
const isEmptySet = (val) => val instanceof Set ? val.size === 0 : !val;
/**
* @typedef {String} Path
*/
// fs_watch helpers
// object to hold per-process fs_watch instances
// (may be shared across chokidar FSWatcher instances)
/**
* @typedef {Object} FsWatchContainer
* @property {Set} listeners
* @property {Set} errHandlers
* @property {Set} rawEmitters
* @property {fs.FSWatcher=} watcher
* @property {Boolean=} watcherUnusable
*/
/**
* @type {Map<String,FsWatchContainer>}
*/
const FsWatchInstances = new Map();
/**
* Instantiates the fs_watch interface
* @param {String} path to be watched
* @param {Object} options to be passed to fs_watch
* @param {Function} listener main event handler
* @param {Function} errHandler emits info about errors
* @param {Function} emitRaw emits raw event data
* @returns {fs.FSWatcher} new fsevents instance
*/
function createFsWatchInstance(path, options, listener, errHandler, emitRaw) {
const handleEvent = (rawEvent, evPath) => {
listener(path);
emitRaw(rawEvent, evPath, {watchedPath: path});
// emit based on events occurring for files from a directory's watcher in
// case the file's watcher misses it (and rely on throttling to de-dupe)
if (evPath && path !== evPath) {
fsWatchBroadcast(
sysPath.resolve(path, evPath), KEY_LISTENERS, sysPath.join(path, evPath)
);
}
};
try {
return fs.watch(path, options, handleEvent);
} catch (error) {
errHandler(error);
}
}
/**
* Helper for passing fs_watch event data to a collection of listeners
* @param {Path} fullPath absolute path bound to fs_watch instance
* @param {String} type listener type
* @param {*=} val1 arguments to be passed to listeners
* @param {*=} val2
* @param {*=} val3
*/
const fsWatchBroadcast = (fullPath, type, val1, val2, val3) => {
const cont = FsWatchInstances.get(fullPath);
if (!cont) return;
foreach(cont[type], (listener) => {
listener(val1, val2, val3);
});
};
/**
* Instantiates the fs_watch interface or binds listeners
* to an existing one covering the same file system entry
* @param {String} path
* @param {String} fullPath absolute path
* @param {Object} options to be passed to fs_watch
* @param {Object} handlers container for event listener functions
*/
const setFsWatchListener = (path, fullPath, options, handlers) => {
const {listener, errHandler, rawEmitter} = handlers;
let cont = FsWatchInstances.get(fullPath);
/** @type {fs.FSWatcher=} */
let watcher;
if (!options.persistent) {
watcher = createFsWatchInstance(
path, options, listener, errHandler, rawEmitter
);
return watcher.close.bind(watcher);
}
if (cont) {
addAndConvert(cont, KEY_LISTENERS, listener);
addAndConvert(cont, KEY_ERR, errHandler);
addAndConvert(cont, KEY_RAW, rawEmitter);
} else {
watcher = createFsWatchInstance(
path,
options,
fsWatchBroadcast.bind(null, fullPath, KEY_LISTENERS),
errHandler, // no need to use broadcast here
fsWatchBroadcast.bind(null, fullPath, KEY_RAW)
);
if (!watcher) return;
watcher.on(EV_ERROR, async (error) => {
const broadcastErr = fsWatchBroadcast.bind(null, fullPath, KEY_ERR);
cont.watcherUnusable = true; // documented since Node 10.4.1
// Workaround for https://github.com/joyent/node/issues/4337
if (isWindows && error.code === 'EPERM') {
try {
const fd = await open(path, 'r');
await close(fd);
broadcastErr(error);
} catch (err) {}
} else {
broadcastErr(error);
}
});
cont = {
listeners: listener,
errHandlers: errHandler,
rawEmitters: rawEmitter,
watcher
};
FsWatchInstances.set(fullPath, cont);
}
// const index = cont.listeners.indexOf(listener);
// removes this instance's listeners and closes the underlying fs_watch
// instance if there are no more listeners left
return () => {
delFromSet(cont, KEY_LISTENERS, listener);
delFromSet(cont, KEY_ERR, errHandler);
delFromSet(cont, KEY_RAW, rawEmitter);
if (isEmptySet(cont.listeners)) {
// Check to protect against issue gh-730.
// if (cont.watcherUnusable) {
cont.watcher.close();
// }
FsWatchInstances.delete(fullPath);
HANDLER_KEYS.forEach(clearItem(cont));
cont.watcher = undefined;
Object.freeze(cont);
}
};
};
// fs_watchFile helpers
// object to hold per-process fs_watchFile instances
// (may be shared across chokidar FSWatcher instances)
const FsWatchFileInstances = new Map();
/**
* Instantiates the fs_watchFile interface or binds listeners
* to an existing one covering the same file system entry
* @param {String} path to be watched
* @param {String} fullPath absolute path
* @param {Object} options options to be passed to fs_watchFile
* @param {Object} handlers container for event listener functions
* @returns {Function} closer
*/
const setFsWatchFileListener = (path, fullPath, options, handlers) => {
const {listener, rawEmitter} = handlers;
let cont = FsWatchFileInstances.get(fullPath);
/* eslint-disable no-unused-vars, prefer-destructuring */
let listeners = new Set();
let rawEmitters = new Set();
const copts = cont && cont.options;
if (copts && (copts.persistent < options.persistent || copts.interval > options.interval)) {
// "Upgrade" the watcher to persistence or a quicker interval.
// This creates some unlikely edge case issues if the user mixes
// settings in a very weird way, but solving for those cases
// doesn't seem worthwhile for the added complexity.
listeners = cont.listeners;
rawEmitters = cont.rawEmitters;
fs.unwatchFile(fullPath);
cont = undefined;
}
/* eslint-enable no-unused-vars, prefer-destructuring */
if (cont) {
addAndConvert(cont, KEY_LISTENERS, listener);
addAndConvert(cont, KEY_RAW, rawEmitter);
} else {
// TODO
// listeners.add(listener);
// rawEmitters.add(rawEmitter);
cont = {
listeners: listener,
rawEmitters: rawEmitter,
options,
watcher: fs.watchFile(fullPath, options, (curr, prev) => {
foreach(cont.rawEmitters, (rawEmitter) => {
rawEmitter(EV_CHANGE, fullPath, {curr, prev});
});
const currmtime = curr.mtimeMs;
if (curr.size !== prev.size || currmtime > prev.mtimeMs || currmtime === 0) {
foreach(cont.listeners, (listener) => listener(path, curr));
}
})
};
FsWatchFileInstances.set(fullPath, cont);
}
// const index = cont.listeners.indexOf(listener);
// Removes this instance's listeners and closes the underlying fs_watchFile
// instance if there are no more listeners left.
return () => {
delFromSet(cont, KEY_LISTENERS, listener);
delFromSet(cont, KEY_RAW, rawEmitter);
if (isEmptySet(cont.listeners)) {
FsWatchFileInstances.delete(fullPath);
fs.unwatchFile(fullPath);
cont.options = cont.watcher = undefined;
Object.freeze(cont);
}
};
};
/**
* @mixin
*/
class NodeFsHandler {
/**
* @param {import("../index").FSWatcher} fsW
*/
constructor(fsW) {
this.fsw = fsW;
this._boundHandleError = (error) => fsW._handleError(error);
}
/**
* Watch file for changes with fs_watchFile or fs_watch.
* @param {String} path to file or dir
* @param {Function} listener on fs change
* @returns {Function} closer for the watcher instance
*/
_watchWithNodeFs(path, listener) {
const opts = this.fsw.options;
const directory = sysPath.dirname(path);
const basename = sysPath.basename(path);
const parent = this.fsw._getWatchedDir(directory);
parent.add(basename);
const absolutePath = sysPath.resolve(path);
const options = {persistent: opts.persistent};
if (!listener) listener = EMPTY_FN;
let closer;
if (opts.usePolling) {
options.interval = opts.enableBinaryInterval && isBinaryPath(basename) ?
opts.binaryInterval : opts.interval;
closer = setFsWatchFileListener(path, absolutePath, options, {
listener,
rawEmitter: this.fsw._emitRaw
});
} else {
closer = setFsWatchListener(path, absolutePath, options, {
listener,
errHandler: this._boundHandleError,
rawEmitter: this.fsw._emitRaw
});
}
return closer;
}
/**
* Watch a file and emit add event if warranted.
* @param {Path} file Path
* @param {fs.Stats} stats result of fs_stat
* @param {Boolean} initialAdd was the file added at watch instantiation?
* @returns {Function} closer for the watcher instance
*/
_handleFile(file, stats, initialAdd) {
if (this.fsw.closed) {
return;
}
const dirname = sysPath.dirname(file);
const basename = sysPath.basename(file);
const parent = this.fsw._getWatchedDir(dirname);
// stats is always present
let prevStats = stats;
// if the file is already being watched, do nothing
if (parent.has(basename)) return;
const listener = async (path, newStats) => {
if (!this.fsw._throttle(THROTTLE_MODE_WATCH, file, 5)) return;
if (!newStats || newStats.mtimeMs === 0) {
try {
const newStats = await stat(file);
if (this.fsw.closed) return;
// Check that change event was not fired because of changed only accessTime.
const at = newStats.atimeMs;
const mt = newStats.mtimeMs;
if (!at || at <= mt || mt !== prevStats.mtimeMs) {
this.fsw._emit(EV_CHANGE, file, newStats);
}
if (isLinux && prevStats.ino !== newStats.ino) {
this.fsw._closeFile(path)
prevStats = newStats;
this.fsw._addPathCloser(path, this._watchWithNodeFs(file, listener));
} else {
prevStats = newStats;
}
} catch (error) {
// Fix issues where mtime is null but file is still present
this.fsw._remove(dirname, basename);
}
// add is about to be emitted if file not already tracked in parent
} else if (parent.has(basename)) {
// Check that change event was not fired because of changed only accessTime.
const at = newStats.atimeMs;
const mt = newStats.mtimeMs;
if (!at || at <= mt || mt !== prevStats.mtimeMs) {
this.fsw._emit(EV_CHANGE, file, newStats);
}
prevStats = newStats;
}
}
// kick off the watcher
const closer = this._watchWithNodeFs(file, listener);
// emit an add event if we're supposed to
if (!(initialAdd && this.fsw.options.ignoreInitial) && this.fsw._isntIgnored(file)) {
if (!this.fsw._throttle(EV_ADD, file, 0)) return;
this.fsw._emit(EV_ADD, file, stats);
}
return closer;
}
/**
* Handle symlinks encountered while reading a dir.
* @param {Object} entry returned by readdirp
* @param {String} directory path of dir being read
* @param {String} path of this item
* @param {String} item basename of this item
* @returns {Promise<Boolean>} true if no more processing is needed for this entry.
*/
async _handleSymlink(entry, directory, path, item) {
if (this.fsw.closed) {
return;
}
const full = entry.fullPath;
const dir = this.fsw._getWatchedDir(directory);
if (!this.fsw.options.followSymlinks) {
// watch symlink directly (don't follow) and detect changes
this.fsw._incrReadyCount();
let linkPath;
try {
linkPath = await fsrealpath(path);
} catch (e) {
this.fsw._emitReady();
return true;
}
if (this.fsw.closed) return;
if (dir.has(item)) {
if (this.fsw._symlinkPaths.get(full) !== linkPath) {
this.fsw._symlinkPaths.set(full, linkPath);
this.fsw._emit(EV_CHANGE, path, entry.stats);
}
} else {
dir.add(item);
this.fsw._symlinkPaths.set(full, linkPath);
this.fsw._emit(EV_ADD, path, entry.stats);
}
this.fsw._emitReady();
return true;
}
// don't follow the same symlink more than once
if (this.fsw._symlinkPaths.has(full)) {
return true;
}
this.fsw._symlinkPaths.set(full, true);
}
_handleRead(directory, initialAdd, wh, target, dir, depth, throttler) {
// Normalize the directory name on Windows
directory = sysPath.join(directory, EMPTY_STR);
if (!wh.hasGlob) {
throttler = this.fsw._throttle('readdir', directory, 1000);
if (!throttler) return;
}
const previous = this.fsw._getWatchedDir(wh.path);
const current = new Set();
let stream = this.fsw._readdirp(directory, {
fileFilter: entry => wh.filterPath(entry),
directoryFilter: entry => wh.filterDir(entry),
depth: 0
}).on(STR_DATA, async (entry) => {
if (this.fsw.closed) {
stream = undefined;
return;
}
const item = entry.path;
let path = sysPath.join(directory, item);
current.add(item);
if (entry.stats.isSymbolicLink() && await this._handleSymlink(entry, directory, path, item)) {
return;
}
if (this.fsw.closed) {
stream = undefined;
return;
}
// Files that present in current directory snapshot
// but absent in previous are added to watch list and
// emit `add` event.
if (item === target || !target && !previous.has(item)) {
this.fsw._incrReadyCount();
// ensure relativeness of path is preserved in case of watcher reuse
path = sysPath.join(dir, sysPath.relative(dir, path));
this._addToNodeFs(path, initialAdd, wh, depth + 1);
}
}).on(EV_ERROR, this._boundHandleError);
return new Promise(resolve =>
stream.once(STR_END, () => {
if (this.fsw.closed) {
stream = undefined;
return;
}
const wasThrottled = throttler ? throttler.clear() : false;
resolve();
// Files that absent in current directory snapshot
// but present in previous emit `remove` event
// and are removed from @watched[directory].
previous.getChildren().filter((item) => {
return item !== directory &&
!current.has(item) &&
// in case of intersecting globs;
// a path may have been filtered out of this readdir, but
// shouldn't be removed because it matches a different glob
(!wh.hasGlob || wh.filterPath({
fullPath: sysPath.resolve(directory, item)
}));
}).forEach((item) => {
this.fsw._remove(directory, item);
});
stream = undefined;
// one more time for any missed in case changes came in extremely quickly
if (wasThrottled) this._handleRead(directory, false, wh, target, dir, depth, throttler);
})
);
}
/**
* Read directory to add / remove files from `@watched` list and re-read it on change.
* @param {String} dir fs path
* @param {fs.Stats} stats
* @param {Boolean} initialAdd
* @param {Number} depth relative to user-supplied path
* @param {String} target child path targeted for watch
* @param {Object} wh Common watch helpers for this path
* @param {String} realpath
* @returns {Promise<Function>} closer for the watcher instance.
*/
async _handleDir(dir, stats, initialAdd, depth, target, wh, realpath) {
const parentDir = this.fsw._getWatchedDir(sysPath.dirname(dir));
const tracked = parentDir.has(sysPath.basename(dir));
if (!(initialAdd && this.fsw.options.ignoreInitial) && !target && !tracked) {
if (!wh.hasGlob || wh.globFilter(dir)) this.fsw._emit(EV_ADD_DIR, dir, stats);
}
// ensure dir is tracked (harmless if redundant)
parentDir.add(sysPath.basename(dir));
this.fsw._getWatchedDir(dir);
let throttler;
let closer;
const oDepth = this.fsw.options.depth;
if ((oDepth == null || depth <= oDepth) && !this.fsw._symlinkPaths.has(realpath)) {
if (!target) {
await this._handleRead(dir, initialAdd, wh, target, dir, depth, throttler);
if (this.fsw.closed) return;
}
closer = this._watchWithNodeFs(dir, (dirPath, stats) => {
// if current directory is removed, do nothing
if (stats && stats.mtimeMs === 0) return;
this._handleRead(dirPath, false, wh, target, dir, depth, throttler);
});
}
return closer;
}
/**
* Handle added file, directory, or glob pattern.
* Delegates call to _handleFile / _handleDir after checks.
* @param {String} path to file or ir
* @param {Boolean} initialAdd was the file added at watch instantiation?
* @param {Object} priorWh depth relative to user-supplied path
* @param {Number} depth Child path actually targeted for watch
* @param {String=} target Child path actually targeted for watch
* @returns {Promise}
*/
async _addToNodeFs(path, initialAdd, priorWh, depth, target) {
const ready = this.fsw._emitReady;
if (this.fsw._isIgnored(path) || this.fsw.closed) {
ready();
return false;
}
const wh = this.fsw._getWatchHelpers(path, depth);
if (!wh.hasGlob && priorWh) {
wh.hasGlob = priorWh.hasGlob;
wh.globFilter = priorWh.globFilter;
wh.filterPath = entry => priorWh.filterPath(entry);
wh.filterDir = entry => priorWh.filterDir(entry);
}
// evaluate what is at the path we're being asked to watch
try {
const stats = await statMethods[wh.statMethod](wh.watchPath);
if (this.fsw.closed) return;
if (this.fsw._isIgnored(wh.watchPath, stats)) {
ready();
return false;
}
const follow = this.fsw.options.followSymlinks && !path.includes(STAR) && !path.includes(BRACE_START);
let closer;
if (stats.isDirectory()) {
const absPath = sysPath.resolve(path);
const targetPath = follow ? await fsrealpath(path) : path;
if (this.fsw.closed) return;
closer = await this._handleDir(wh.watchPath, stats, initialAdd, depth, target, wh, targetPath);
if (this.fsw.closed) return;
// preserve this symlink's target path
if (absPath !== targetPath && targetPath !== undefined) {
this.fsw._symlinkPaths.set(absPath, targetPath);
}
} else if (stats.isSymbolicLink()) {
const targetPath = follow ? await fsrealpath(path) : path;
if (this.fsw.closed) return;
const parent = sysPath.dirname(wh.watchPath);
this.fsw._getWatchedDir(parent).add(wh.watchPath);
this.fsw._emit(EV_ADD, wh.watchPath, stats);
closer = await this._handleDir(parent, stats, initialAdd, depth, path, wh, targetPath);
if (this.fsw.closed) return;
// preserve this symlink's target path
if (targetPath !== undefined) {
this.fsw._symlinkPaths.set(sysPath.resolve(path), targetPath);
}
} else {
closer = this._handleFile(wh.watchPath, stats, initialAdd);
}
ready();
this.fsw._addPathCloser(path, closer);
return false;
} catch (error) {
if (this.fsw._handleError(error)) {
ready();
return path;
}
}
}
}
module.exports = NodeFsHandler;

@ -0,0 +1,70 @@
{
"name": "chokidar",
"description": "Minimal and efficient cross-platform file watching library",
"version": "3.6.0",
"homepage": "https://github.com/paulmillr/chokidar",
"author": "Paul Miller (https://paulmillr.com)",
"contributors": [
"Paul Miller (https://paulmillr.com)",
"Elan Shanker"
],
"engines": {
"node": ">= 8.10.0"
},
"main": "index.js",
"types": "./types/index.d.ts",
"dependencies": {
"anymatch": "~3.1.2",
"braces": "~3.0.2",
"glob-parent": "~5.1.2",
"is-binary-path": "~2.1.0",
"is-glob": "~4.0.1",
"normalize-path": "~3.0.0",
"readdirp": "~3.6.0"
},
"optionalDependencies": {
"fsevents": "~2.3.2"
},
"devDependencies": {
"@types/node": "^14",
"chai": "^4.3",
"dtslint": "^3.3.0",
"eslint": "^7.0.0",
"mocha": "^7.0.0",
"rimraf": "^3.0.0",
"sinon": "^9.0.1",
"sinon-chai": "^3.3.0",
"typescript": "^4.4.3",
"upath": "^1.2.0"
},
"files": [
"index.js",
"lib/*.js",
"types/index.d.ts"
],
"repository": {
"type": "git",
"url": "git+https://github.com/paulmillr/chokidar.git"
},
"bugs": {
"url": "https://github.com/paulmillr/chokidar/issues"
},
"license": "MIT",
"scripts": {
"dtslint": "dtslint types",
"lint": "eslint --report-unused-disable-directives --ignore-path .gitignore .",
"build": "npm ls",
"mocha": "mocha --exit --timeout 90000",
"test": "npm run lint && npm run mocha"
},
"keywords": [
"fs",
"watch",
"watchFile",
"watcher",
"watching",
"file",
"fsevents"
],
"funding": "https://paulmillr.com/funding/"
}

@ -0,0 +1,192 @@
// TypeScript Version: 3.0
/// <reference types="node" />
import * as fs from "fs";
import { EventEmitter } from "events";
import { Matcher } from 'anymatch';
export class FSWatcher extends EventEmitter implements fs.FSWatcher {
options: WatchOptions;
/**
* Constructs a new FSWatcher instance with optional WatchOptions parameter.
*/
constructor(options?: WatchOptions);
/**
* Add files, directories, or glob patterns for tracking. Takes an array of strings or just one
* string.
*/
add(paths: string | ReadonlyArray<string>): this;
/**
* Stop watching files, directories, or glob patterns. Takes an array of strings or just one
* string.
*/
unwatch(paths: string | ReadonlyArray<string>): this;
/**
* Returns an object representing all the paths on the file system being watched by this
* `FSWatcher` instance. The object's keys are all the directories (using absolute paths unless
* the `cwd` option was used), and the values are arrays of the names of the items contained in
* each directory.
*/
getWatched(): {
[directory: string]: string[];
};
/**
* Removes all listeners from watched files.
*/
close(): Promise<void>;
on(event: 'add'|'addDir'|'change', listener: (path: string, stats?: fs.Stats) => void): this;
on(event: 'all', listener: (eventName: 'add'|'addDir'|'change'|'unlink'|'unlinkDir', path: string, stats?: fs.Stats) => void): this;
/**
* Error occurred
*/
on(event: 'error', listener: (error: Error) => void): this;
/**
* Exposes the native Node `fs.FSWatcher events`
*/
on(event: 'raw', listener: (eventName: string, path: string, details: any) => void): this;
/**
* Fires when the initial scan is complete
*/
on(event: 'ready', listener: () => void): this;
on(event: 'unlink'|'unlinkDir', listener: (path: string) => void): this;
on(event: string, listener: (...args: any[]) => void): this;
ref(): this;
unref(): this;
}
export interface WatchOptions {
/**
* Indicates whether the process should continue to run as long as files are being watched. If
* set to `false` when using `fsevents` to watch, no more events will be emitted after `ready`,
* even if the process continues to run.
*/
persistent?: boolean;
/**
* ([anymatch](https://github.com/micromatch/anymatch)-compatible definition) Defines files/paths to
* be ignored. The whole relative or absolute path is tested, not just filename. If a function
* with two arguments is provided, it gets called twice per path - once with a single argument
* (the path), second time with two arguments (the path and the
* [`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats) object of that path).
*/
ignored?: Matcher;
/**
* If set to `false` then `add`/`addDir` events are also emitted for matching paths while
* instantiating the watching as chokidar discovers these file paths (before the `ready` event).
*/
ignoreInitial?: boolean;
/**
* When `false`, only the symlinks themselves will be watched for changes instead of following
* the link references and bubbling events through the link's path.
*/
followSymlinks?: boolean;
/**
* The base directory from which watch `paths` are to be derived. Paths emitted with events will
* be relative to this.
*/
cwd?: string;
/**
* If set to true then the strings passed to .watch() and .add() are treated as literal path
* names, even if they look like globs. Default: false.
*/
disableGlobbing?: boolean;
/**
* Whether to use fs.watchFile (backed by polling), or fs.watch. If polling leads to high CPU
* utilization, consider setting this to `false`. It is typically necessary to **set this to
* `true` to successfully watch files over a network**, and it may be necessary to successfully
* watch files in other non-standard situations. Setting to `true` explicitly on OS X overrides
* the `useFsEvents` default.
*/
usePolling?: boolean;
/**
* Whether to use the `fsevents` watching interface if available. When set to `true` explicitly
* and `fsevents` is available this supercedes the `usePolling` setting. When set to `false` on
* OS X, `usePolling: true` becomes the default.
*/
useFsEvents?: boolean;
/**
* If relying upon the [`fs.Stats`](https://nodejs.org/api/fs.html#fs_class_fs_stats) object that
* may get passed with `add`, `addDir`, and `change` events, set this to `true` to ensure it is
* provided even in cases where it wasn't already available from the underlying watch events.
*/
alwaysStat?: boolean;
/**
* If set, limits how many levels of subdirectories will be traversed.
*/
depth?: number;
/**
* Interval of file system polling.
*/
interval?: number;
/**
* Interval of file system polling for binary files. ([see list of binary extensions](https://gi
* thub.com/sindresorhus/binary-extensions/blob/master/binary-extensions.json))
*/
binaryInterval?: number;
/**
* Indicates whether to watch files that don't have read permissions if possible. If watching
* fails due to `EPERM` or `EACCES` with this set to `true`, the errors will be suppressed
* silently.
*/
ignorePermissionErrors?: boolean;
/**
* `true` if `useFsEvents` and `usePolling` are `false`). Automatically filters out artifacts
* that occur when using editors that use "atomic writes" instead of writing directly to the
* source file. If a file is re-added within 100 ms of being deleted, Chokidar emits a `change`
* event rather than `unlink` then `add`. If the default of 100 ms does not work well for you,
* you can override it by setting `atomic` to a custom value, in milliseconds.
*/
atomic?: boolean | number;
/**
* can be set to an object in order to adjust timing params:
*/
awaitWriteFinish?: AwaitWriteFinishOptions | boolean;
}
export interface AwaitWriteFinishOptions {
/**
* Amount of time in milliseconds for a file size to remain constant before emitting its event.
*/
stabilityThreshold?: number;
/**
* File size polling interval.
*/
pollInterval?: number;
}
/**
* produces an instance of `FSWatcher`.
*/
export function watch(
paths: string | ReadonlyArray<string>,
options?: WatchOptions
): FSWatcher;

@ -0,0 +1,4 @@
language: node_js
node_js:
- 0.4
- 0.6

@ -0,0 +1,18 @@
This software is released under the MIT license:
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

@ -0,0 +1,62 @@
concat-map
==========
Concatenative mapdashery.
[![browser support](http://ci.testling.com/substack/node-concat-map.png)](http://ci.testling.com/substack/node-concat-map)
[![build status](https://secure.travis-ci.org/substack/node-concat-map.png)](http://travis-ci.org/substack/node-concat-map)
example
=======
``` js
var concatMap = require('concat-map');
var xs = [ 1, 2, 3, 4, 5, 6 ];
var ys = concatMap(xs, function (x) {
return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
});
console.dir(ys);
```
***
```
[ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]
```
methods
=======
``` js
var concatMap = require('concat-map')
```
concatMap(xs, fn)
-----------------
Return an array of concatenated elements by calling `fn(x, i)` for each element
`x` and each index `i` in the array `xs`.
When `fn(x, i)` returns an array, its result will be concatenated with the
result array. If `fn(x, i)` returns anything else, that value will be pushed
onto the end of the result array.
install
=======
With [npm](http://npmjs.org) do:
```
npm install concat-map
```
license
=======
MIT
notes
=====
This module was written while sitting high above the ground in a tree.

@ -0,0 +1,6 @@
var concatMap = require('../');
var xs = [ 1, 2, 3, 4, 5, 6 ];
var ys = concatMap(xs, function (x) {
return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
});
console.dir(ys);

@ -0,0 +1,13 @@
module.exports = function (xs, fn) {
var res = [];
for (var i = 0; i < xs.length; i++) {
var x = fn(xs[i], i);
if (isArray(x)) res.push.apply(res, x);
else res.push(x);
}
return res;
};
var isArray = Array.isArray || function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};

@ -0,0 +1,43 @@
{
"name" : "concat-map",
"description" : "concatenative mapdashery",
"version" : "0.0.1",
"repository" : {
"type" : "git",
"url" : "git://github.com/substack/node-concat-map.git"
},
"main" : "index.js",
"keywords" : [
"concat",
"concatMap",
"map",
"functional",
"higher-order"
],
"directories" : {
"example" : "example",
"test" : "test"
},
"scripts" : {
"test" : "tape test/*.js"
},
"devDependencies" : {
"tape" : "~2.4.0"
},
"license" : "MIT",
"author" : {
"name" : "James Halliday",
"email" : "mail@substack.net",
"url" : "http://substack.net"
},
"testling" : {
"files" : "test/*.js",
"browsers" : {
"ie" : [ 6, 7, 8, 9 ],
"ff" : [ 3.5, 10, 15.0 ],
"chrome" : [ 10, 22 ],
"safari" : [ 5.1 ],
"opera" : [ 12 ]
}
}
}

@ -0,0 +1,39 @@
var concatMap = require('../');
var test = require('tape');
test('empty or not', function (t) {
var xs = [ 1, 2, 3, 4, 5, 6 ];
var ixes = [];
var ys = concatMap(xs, function (x, ix) {
ixes.push(ix);
return x % 2 ? [ x - 0.1, x, x + 0.1 ] : [];
});
t.same(ys, [ 0.9, 1, 1.1, 2.9, 3, 3.1, 4.9, 5, 5.1 ]);
t.same(ixes, [ 0, 1, 2, 3, 4, 5 ]);
t.end();
});
test('always something', function (t) {
var xs = [ 'a', 'b', 'c', 'd' ];
var ys = concatMap(xs, function (x) {
return x === 'b' ? [ 'B', 'B', 'B' ] : [ x ];
});
t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);
t.end();
});
test('scalars', function (t) {
var xs = [ 'a', 'b', 'c', 'd' ];
var ys = concatMap(xs, function (x) {
return x === 'b' ? [ 'B', 'B', 'B' ] : x;
});
t.same(ys, [ 'a', 'B', 'B', 'B', 'c', 'd' ]);
t.end();
});
test('undefs', function (t) {
var xs = [ 'a', 'b', 'c', 'd' ];
var ys = concatMap(xs, function () {});
t.same(ys, [ undefined, undefined, undefined, undefined ]);
t.end();
});

@ -0,0 +1,20 @@
(The MIT License)
Copyright (c) 2014-2017 TJ Holowaychuk <tj@vision-media.ca>
Copyright (c) 2018-2021 Josh Junon
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the 'Software'), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

@ -0,0 +1,481 @@
# debug
[![OpenCollective](https://opencollective.com/debug/backers/badge.svg)](#backers)
[![OpenCollective](https://opencollective.com/debug/sponsors/badge.svg)](#sponsors)
<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
A tiny JavaScript debugging utility modelled after Node.js core's debugging
technique. Works in Node.js and web browsers.
## Installation
```bash
$ npm install debug
```
## Usage
`debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole.
Example [_app.js_](./examples/node/app.js):
```js
var debug = require('debug')('http')
, http = require('http')
, name = 'My App';
// fake app
debug('booting %o', name);
http.createServer(function(req, res){
debug(req.method + ' ' + req.url);
res.end('hello\n');
}).listen(3000, function(){
debug('listening');
});
// fake worker of some kind
require('./worker');
```
Example [_worker.js_](./examples/node/worker.js):
```js
var a = require('debug')('worker:a')
, b = require('debug')('worker:b');
function work() {
a('doing lots of uninteresting work');
setTimeout(work, Math.random() * 1000);
}
work();
function workb() {
b('doing some work');
setTimeout(workb, Math.random() * 2000);
}
workb();
```
The `DEBUG` environment variable is then used to enable these based on space or
comma-delimited names.
Here are some examples:
<img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png">
<img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png">
<img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png">
#### Windows command prompt notes
##### CMD
On Windows the environment variable is set using the `set` command.
```cmd
set DEBUG=*,-not_this
```
Example:
```cmd
set DEBUG=* & node app.js
```
##### PowerShell (VS Code default)
PowerShell uses different syntax to set environment variables.
```cmd
$env:DEBUG = "*,-not_this"
```
Example:
```cmd
$env:DEBUG='app';node app.js
```
Then, run the program to be debugged as usual.
npm script example:
```js
"windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js",
```
## Namespace Colors
Every debug instance has a color generated for it based on its namespace name.
This helps when visually parsing the debug output to identify which debug instance
a debug line belongs to.
#### Node.js
In Node.js, colors are enabled when stderr is a TTY. You also _should_ install
the [`supports-color`](https://npmjs.org/supports-color) module alongside debug,
otherwise debug will only use a small handful of basic colors.
<img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png">
#### Web Browser
Colors are also enabled on "Web Inspectors" that understand the `%c` formatting
option. These are WebKit web inspectors, Firefox ([since version
31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/))
and the Firebug plugin for Firefox (any version).
<img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png">
## Millisecond diff
When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls.
<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below:
<img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png">
## Conventions
If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output.
## Wildcards
The `*` character may be used as a wildcard. Suppose for example your library has
debuggers named "connect:bodyParser", "connect:compress", "connect:session",
instead of listing all three with
`DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do
`DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`.
You can also exclude specific debuggers by prefixing them with a "-" character.
For example, `DEBUG=*,-connect:*` would include all debuggers except those
starting with "connect:".
## Environment Variables
When running through Node.js, you can set a few environment variables that will
change the behavior of the debug logging:
| Name | Purpose |
|-----------|-------------------------------------------------|
| `DEBUG` | Enables/disables specific debugging namespaces. |
| `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). |
| `DEBUG_COLORS`| Whether or not to use colors in the debug output. |
| `DEBUG_DEPTH` | Object inspection depth. |
| `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. |
__Note:__ The environment variables beginning with `DEBUG_` end up being
converted into an Options object that gets used with `%o`/`%O` formatters.
See the Node.js documentation for
[`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options)
for the complete list.
## Formatters
Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting.
Below are the officially supported formatters:
| Formatter | Representation |
|-----------|----------------|
| `%O` | Pretty-print an Object on multiple lines. |
| `%o` | Pretty-print an Object all on a single line. |
| `%s` | String. |
| `%d` | Number (both integer and float). |
| `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. |
| `%%` | Single percent sign ('%'). This does not consume an argument. |
### Custom formatters
You can add custom formatters by extending the `debug.formatters` object.
For example, if you wanted to add support for rendering a Buffer as hex with
`%h`, you could do something like:
```js
const createDebug = require('debug')
createDebug.formatters.h = (v) => {
return v.toString('hex')
}
// …elsewhere
const debug = createDebug('foo')
debug('this is hex: %h', new Buffer('hello world'))
// foo this is hex: 68656c6c6f20776f726c6421 +0ms
```
## Browser Support
You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify),
or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest),
if you don't want to build it yourself.
Debug's enable state is currently persisted by `localStorage`.
Consider the situation shown below where you have `worker:a` and `worker:b`,
and wish to debug both. You can enable this using `localStorage.debug`:
```js
localStorage.debug = 'worker:*'
```
And then refresh the page.
```js
a = debug('worker:a');
b = debug('worker:b');
setInterval(function(){
a('doing some work');
}, 1000);
setInterval(function(){
b('doing some work');
}, 1200);
```
In Chromium-based web browsers (e.g. Brave, Chrome, and Electron), the JavaScript console will—by default—only show messages logged by `debug` if the "Verbose" log level is _enabled_.
<img width="647" src="https://user-images.githubusercontent.com/7143133/152083257-29034707-c42c-4959-8add-3cee850e6fcf.png">
## Output streams
By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method:
Example [_stdout.js_](./examples/node/stdout.js):
```js
var debug = require('debug');
var error = debug('app:error');
// by default stderr is used
error('goes to stderr!');
var log = debug('app:log');
// set this namespace to log via console.log
log.log = console.log.bind(console); // don't forget to bind to console!
log('goes to stdout');
error('still goes to stderr!');
// set all output to go via console.info
// overrides all per-namespace log settings
debug.log = console.info.bind(console);
error('now goes to stdout via console.info');
log('still goes to stdout, but via console.info now');
```
## Extend
You can simply extend debugger
```js
const log = require('debug')('auth');
//creates new debug instance with extended namespace
const logSign = log.extend('sign');
const logLogin = log.extend('login');
log('hello'); // auth hello
logSign('hello'); //auth:sign hello
logLogin('hello'); //auth:login hello
```
## Set dynamically
You can also enable debug dynamically by calling the `enable()` method :
```js
let debug = require('debug');
console.log(1, debug.enabled('test'));
debug.enable('test');
console.log(2, debug.enabled('test'));
debug.disable();
console.log(3, debug.enabled('test'));
```
print :
```
1 false
2 true
3 false
```
Usage :
`enable(namespaces)`
`namespaces` can include modes separated by a colon and wildcards.
Note that calling `enable()` completely overrides previously set DEBUG variable :
```
$ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))'
=> false
```
`disable()`
Will disable all namespaces. The functions returns the namespaces currently
enabled (and skipped). This can be useful if you want to disable debugging
temporarily without knowing what was enabled to begin with.
For example:
```js
let debug = require('debug');
debug.enable('foo:*,-foo:bar');
let namespaces = debug.disable();
debug.enable(namespaces);
```
Note: There is no guarantee that the string will be identical to the initial
enable string, but semantically they will be identical.
## Checking whether a debug target is enabled
After you've created a debug instance, you can determine whether or not it is
enabled by checking the `enabled` property:
```javascript
const debug = require('debug')('http');
if (debug.enabled) {
// do stuff...
}
```
You can also manually toggle this property to force the debug instance to be
enabled or disabled.
## Usage in child processes
Due to the way `debug` detects if the output is a TTY or not, colors are not shown in child processes when `stderr` is piped. A solution is to pass the `DEBUG_COLORS=1` environment variable to the child process.
For example:
```javascript
worker = fork(WORKER_WRAP_PATH, [workerPath], {
stdio: [
/* stdin: */ 0,
/* stdout: */ 'pipe',
/* stderr: */ 'pipe',
'ipc',
],
env: Object.assign({}, process.env, {
DEBUG_COLORS: 1 // without this settings, colors won't be shown
}),
});
worker.stderr.pipe(process.stderr, { end: false });
```
## Authors
- TJ Holowaychuk
- Nathan Rajlich
- Andrew Rhyne
- Josh Junon
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/debug#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/debug#sponsor)]
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## License
(The MIT License)
Copyright (c) 2014-2017 TJ Holowaychuk &lt;tj@vision-media.ca&gt;
Copyright (c) 2018-2021 Josh Junon
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

@ -0,0 +1,64 @@
{
"name": "debug",
"version": "4.4.1",
"repository": {
"type": "git",
"url": "git://github.com/debug-js/debug.git"
},
"description": "Lightweight debugging utility for Node.js and the browser",
"keywords": [
"debug",
"log",
"debugger"
],
"files": [
"src",
"LICENSE",
"README.md"
],
"author": "Josh Junon (https://github.com/qix-)",
"contributors": [
"TJ Holowaychuk <tj@vision-media.ca>",
"Nathan Rajlich <nathan@tootallnate.net> (http://n8.io)",
"Andrew Rhyne <rhyneandrew@gmail.com>"
],
"license": "MIT",
"scripts": {
"lint": "xo",
"test": "npm run test:node && npm run test:browser && npm run lint",
"test:node": "mocha test.js test.node.js",
"test:browser": "karma start --single-run",
"test:coverage": "cat ./coverage/lcov.info | coveralls"
},
"dependencies": {
"ms": "^2.1.3"
},
"devDependencies": {
"brfs": "^2.0.1",
"browserify": "^16.2.3",
"coveralls": "^3.0.2",
"karma": "^3.1.4",
"karma-browserify": "^6.0.0",
"karma-chrome-launcher": "^2.2.0",
"karma-mocha": "^1.3.0",
"mocha": "^5.2.0",
"mocha-lcov-reporter": "^1.2.0",
"sinon": "^14.0.0",
"xo": "^0.23.0"
},
"peerDependenciesMeta": {
"supports-color": {
"optional": true
}
},
"main": "./src/index.js",
"browser": "./src/browser.js",
"engines": {
"node": ">=6.0"
},
"xo": {
"rules": {
"import/extensions": "off"
}
}
}

@ -0,0 +1,272 @@
/* eslint-env browser */
/**
* This is the web browser implementation of `debug()`.
*/
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
exports.destroy = (() => {
let warned = false;
return () => {
if (!warned) {
warned = true;
console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
}
};
})();
/**
* Colors.
*/
exports.colors = [
'#0000CC',
'#0000FF',
'#0033CC',
'#0033FF',
'#0066CC',
'#0066FF',
'#0099CC',
'#0099FF',
'#00CC00',
'#00CC33',
'#00CC66',
'#00CC99',
'#00CCCC',
'#00CCFF',
'#3300CC',
'#3300FF',
'#3333CC',
'#3333FF',
'#3366CC',
'#3366FF',
'#3399CC',
'#3399FF',
'#33CC00',
'#33CC33',
'#33CC66',
'#33CC99',
'#33CCCC',
'#33CCFF',
'#6600CC',
'#6600FF',
'#6633CC',
'#6633FF',
'#66CC00',
'#66CC33',
'#9900CC',
'#9900FF',
'#9933CC',
'#9933FF',
'#99CC00',
'#99CC33',
'#CC0000',
'#CC0033',
'#CC0066',
'#CC0099',
'#CC00CC',
'#CC00FF',
'#CC3300',
'#CC3333',
'#CC3366',
'#CC3399',
'#CC33CC',
'#CC33FF',
'#CC6600',
'#CC6633',
'#CC9900',
'#CC9933',
'#CCCC00',
'#CCCC33',
'#FF0000',
'#FF0033',
'#FF0066',
'#FF0099',
'#FF00CC',
'#FF00FF',
'#FF3300',
'#FF3333',
'#FF3366',
'#FF3399',
'#FF33CC',
'#FF33FF',
'#FF6600',
'#FF6633',
'#FF9900',
'#FF9933',
'#FFCC00',
'#FFCC33'
];
/**
* Currently only WebKit-based Web Inspectors, Firefox >= v31,
* and the Firebug extension (any Firefox version) are known
* to support "%c" CSS customizations.
*
* TODO: add a `localStorage` variable to explicitly enable/disable colors
*/
// eslint-disable-next-line complexity
function useColors() {
// NB: In an Electron preload script, document will be defined but not fully
// initialized. Since we know we're in Chrome, we'll just detect this case
// explicitly
if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
return true;
}
// Internet Explorer and Edge do not support colors.
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
return false;
}
let m;
// Is webkit? http://stackoverflow.com/a/16459606/376773
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
// eslint-disable-next-line no-return-assign
return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||
// Is firebug? http://stackoverflow.com/a/398120/376773
(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||
// Is firefox >= v31?
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
(typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)) && parseInt(m[1], 10) >= 31) ||
// Double check webkit in userAgent just in case we are in a worker
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/));
}
/**
* Colorize log arguments if enabled.
*
* @api public
*/
function formatArgs(args) {
args[0] = (this.useColors ? '%c' : '') +
this.namespace +
(this.useColors ? ' %c' : ' ') +
args[0] +
(this.useColors ? '%c ' : ' ') +
'+' + module.exports.humanize(this.diff);
if (!this.useColors) {
return;
}
const c = 'color: ' + this.color;
args.splice(1, 0, c, 'color: inherit');
// The final "%c" is somewhat tricky, because there could be other
// arguments passed either before or after the %c, so we need to
// figure out the correct index to insert the CSS into
let index = 0;
let lastC = 0;
args[0].replace(/%[a-zA-Z%]/g, match => {
if (match === '%%') {
return;
}
index++;
if (match === '%c') {
// We only are interested in the *last* %c
// (the user may have provided their own)
lastC = index;
}
});
args.splice(lastC, 0, c);
}
/**
* Invokes `console.debug()` when available.
* No-op when `console.debug` is not a "function".
* If `console.debug` is not available, falls back
* to `console.log`.
*
* @api public
*/
exports.log = console.debug || console.log || (() => {});
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
try {
if (namespaces) {
exports.storage.setItem('debug', namespaces);
} else {
exports.storage.removeItem('debug');
}
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
let r;
try {
r = exports.storage.getItem('debug') || exports.storage.getItem('DEBUG') ;
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
if (!r && typeof process !== 'undefined' && 'env' in process) {
r = process.env.DEBUG;
}
return r;
}
/**
* Localstorage attempts to return the localstorage.
*
* This is necessary because safari throws
* when a user disables cookies/localstorage
* and you attempt to access it.
*
* @return {LocalStorage}
* @api private
*/
function localstorage() {
try {
// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
// The Browser also has localStorage in the global context.
return localStorage;
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
module.exports = require('./common')(exports);
const {formatters} = module.exports;
/**
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
*/
formatters.j = function (v) {
try {
return JSON.stringify(v);
} catch (error) {
return '[UnexpectedJSONParseError]: ' + error.message;
}
};

@ -0,0 +1,292 @@
/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*/
function setup(env) {
createDebug.debug = createDebug;
createDebug.default = createDebug;
createDebug.coerce = coerce;
createDebug.disable = disable;
createDebug.enable = enable;
createDebug.enabled = enabled;
createDebug.humanize = require('ms');
createDebug.destroy = destroy;
Object.keys(env).forEach(key => {
createDebug[key] = env[key];
});
/**
* The currently active debug mode names, and names to skip.
*/
createDebug.names = [];
createDebug.skips = [];
/**
* Map of special "%n" handling functions, for the debug "format" argument.
*
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
*/
createDebug.formatters = {};
/**
* Selects a color for a debug namespace
* @param {String} namespace The namespace string for the debug instance to be colored
* @return {Number|String} An ANSI color code for the given namespace
* @api private
*/
function selectColor(namespace) {
let hash = 0;
for (let i = 0; i < namespace.length; i++) {
hash = ((hash << 5) - hash) + namespace.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
}
createDebug.selectColor = selectColor;
/**
* Create a debugger with the given `namespace`.
*
* @param {String} namespace
* @return {Function}
* @api public
*/
function createDebug(namespace) {
let prevTime;
let enableOverride = null;
let namespacesCache;
let enabledCache;
function debug(...args) {
// Disabled?
if (!debug.enabled) {
return;
}
const self = debug;
// Set `diff` timestamp
const curr = Number(new Date());
const ms = curr - (prevTime || curr);
self.diff = ms;
self.prev = prevTime;
self.curr = curr;
prevTime = curr;
args[0] = createDebug.coerce(args[0]);
if (typeof args[0] !== 'string') {
// Anything else let's inspect with %O
args.unshift('%O');
}
// Apply any `formatters` transformations
let index = 0;
args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
// If we encounter an escaped % then don't increase the array index
if (match === '%%') {
return '%';
}
index++;
const formatter = createDebug.formatters[format];
if (typeof formatter === 'function') {
const val = args[index];
match = formatter.call(self, val);
// Now we need to remove `args[index]` since it's inlined in the `format`
args.splice(index, 1);
index--;
}
return match;
});
// Apply env-specific formatting (colors, etc.)
createDebug.formatArgs.call(self, args);
const logFn = self.log || createDebug.log;
logFn.apply(self, args);
}
debug.namespace = namespace;
debug.useColors = createDebug.useColors();
debug.color = createDebug.selectColor(namespace);
debug.extend = extend;
debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.
Object.defineProperty(debug, 'enabled', {
enumerable: true,
configurable: false,
get: () => {
if (enableOverride !== null) {
return enableOverride;
}
if (namespacesCache !== createDebug.namespaces) {
namespacesCache = createDebug.namespaces;
enabledCache = createDebug.enabled(namespace);
}
return enabledCache;
},
set: v => {
enableOverride = v;
}
});
// Env-specific initialization logic for debug instances
if (typeof createDebug.init === 'function') {
createDebug.init(debug);
}
return debug;
}
function extend(namespace, delimiter) {
const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
newDebug.log = this.log;
return newDebug;
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
* @param {String} namespaces
* @api public
*/
function enable(namespaces) {
createDebug.save(namespaces);
createDebug.namespaces = namespaces;
createDebug.names = [];
createDebug.skips = [];
const split = (typeof namespaces === 'string' ? namespaces : '')
.trim()
.replace(/\s+/g, ',')
.split(',')
.filter(Boolean);
for (const ns of split) {
if (ns[0] === '-') {
createDebug.skips.push(ns.slice(1));
} else {
createDebug.names.push(ns);
}
}
}
/**
* Checks if the given string matches a namespace template, honoring
* asterisks as wildcards.
*
* @param {String} search
* @param {String} template
* @return {Boolean}
*/
function matchesTemplate(search, template) {
let searchIndex = 0;
let templateIndex = 0;
let starIndex = -1;
let matchIndex = 0;
while (searchIndex < search.length) {
if (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) {
// Match character or proceed with wildcard
if (template[templateIndex] === '*') {
starIndex = templateIndex;
matchIndex = searchIndex;
templateIndex++; // Skip the '*'
} else {
searchIndex++;
templateIndex++;
}
} else if (starIndex !== -1) { // eslint-disable-line no-negated-condition
// Backtrack to the last '*' and try to match more characters
templateIndex = starIndex + 1;
matchIndex++;
searchIndex = matchIndex;
} else {
return false; // No match
}
}
// Handle trailing '*' in template
while (templateIndex < template.length && template[templateIndex] === '*') {
templateIndex++;
}
return templateIndex === template.length;
}
/**
* Disable debug output.
*
* @return {String} namespaces
* @api public
*/
function disable() {
const namespaces = [
...createDebug.names,
...createDebug.skips.map(namespace => '-' + namespace)
].join(',');
createDebug.enable('');
return namespaces;
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
* @param {String} name
* @return {Boolean}
* @api public
*/
function enabled(name) {
for (const skip of createDebug.skips) {
if (matchesTemplate(name, skip)) {
return false;
}
}
for (const ns of createDebug.names) {
if (matchesTemplate(name, ns)) {
return true;
}
}
return false;
}
/**
* Coerce `val`.
*
* @param {Mixed} val
* @return {Mixed}
* @api private
*/
function coerce(val) {
if (val instanceof Error) {
return val.stack || val.message;
}
return val;
}
/**
* XXX DO NOT USE. This is a temporary stub function.
* XXX It WILL be removed in the next major release.
*/
function destroy() {
console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
}
createDebug.enable(createDebug.load());
return createDebug;
}
module.exports = setup;

@ -0,0 +1,10 @@
/**
* Detect Electron renderer / nwjs process, which is node, but we should
* treat as a browser.
*/
if (typeof process === 'undefined' || process.type === 'renderer' || process.browser === true || process.__nwjs) {
module.exports = require('./browser.js');
} else {
module.exports = require('./node.js');
}

@ -0,0 +1,263 @@
/**
* Module dependencies.
*/
const tty = require('tty');
const util = require('util');
/**
* This is the Node.js implementation of `debug()`.
*/
exports.init = init;
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.destroy = util.deprecate(
() => {},
'Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.'
);
/**
* Colors.
*/
exports.colors = [6, 2, 3, 4, 5, 1];
try {
// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
// eslint-disable-next-line import/no-extraneous-dependencies
const supportsColor = require('supports-color');
if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
exports.colors = [
20,
21,
26,
27,
32,
33,
38,
39,
40,
41,
42,
43,
44,
45,
56,
57,
62,
63,
68,
69,
74,
75,
76,
77,
78,
79,
80,
81,
92,
93,
98,
99,
112,
113,
128,
129,
134,
135,
148,
149,
160,
161,
162,
163,
164,
165,
166,
167,
168,
169,
170,
171,
172,
173,
178,
179,
184,
185,
196,
197,
198,
199,
200,
201,
202,
203,
204,
205,
206,
207,
208,
209,
214,
215,
220,
221
];
}
} catch (error) {
// Swallow - we only care if `supports-color` is available; it doesn't have to be.
}
/**
* Build up the default `inspectOpts` object from the environment variables.
*
* $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
*/
exports.inspectOpts = Object.keys(process.env).filter(key => {
return /^debug_/i.test(key);
}).reduce((obj, key) => {
// Camel-case
const prop = key
.substring(6)
.toLowerCase()
.replace(/_([a-z])/g, (_, k) => {
return k.toUpperCase();
});
// Coerce string value into JS value
let val = process.env[key];
if (/^(yes|on|true|enabled)$/i.test(val)) {
val = true;
} else if (/^(no|off|false|disabled)$/i.test(val)) {
val = false;
} else if (val === 'null') {
val = null;
} else {
val = Number(val);
}
obj[prop] = val;
return obj;
}, {});
/**
* Is stdout a TTY? Colored output is enabled when `true`.
*/
function useColors() {
return 'colors' in exports.inspectOpts ?
Boolean(exports.inspectOpts.colors) :
tty.isatty(process.stderr.fd);
}
/**
* Adds ANSI color escape codes if enabled.
*
* @api public
*/
function formatArgs(args) {
const {namespace: name, useColors} = this;
if (useColors) {
const c = this.color;
const colorCode = '\u001B[3' + (c < 8 ? c : '8;5;' + c);
const prefix = ` ${colorCode};1m${name} \u001B[0m`;
args[0] = prefix + args[0].split('\n').join('\n' + prefix);
args.push(colorCode + 'm+' + module.exports.humanize(this.diff) + '\u001B[0m');
} else {
args[0] = getDate() + name + ' ' + args[0];
}
}
function getDate() {
if (exports.inspectOpts.hideDate) {
return '';
}
return new Date().toISOString() + ' ';
}
/**
* Invokes `util.formatWithOptions()` with the specified arguments and writes to stderr.
*/
function log(...args) {
return process.stderr.write(util.formatWithOptions(exports.inspectOpts, ...args) + '\n');
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
if (namespaces) {
process.env.DEBUG = namespaces;
} else {
// If you set a process.env field to null or undefined, it gets cast to the
// string 'null' or 'undefined'. Just delete instead.
delete process.env.DEBUG;
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
return process.env.DEBUG;
}
/**
* Init logic for `debug` instances.
*
* Create a new `inspectOpts` object in case `useColors` is set
* differently for a particular `debug` instance.
*/
function init(debug) {
debug.inspectOpts = {};
const keys = Object.keys(exports.inspectOpts);
for (let i = 0; i < keys.length; i++) {
debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
}
}
module.exports = require('./common')(exports);
const {formatters} = module.exports;
/**
* Map %o to `util.inspect()`, all on a single line.
*/
formatters.o = function (v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts)
.split('\n')
.map(str => str.trim())
.join(' ');
};
/**
* Map %O to `util.inspect()`, allowing multiple lines if needed.
*/
formatters.O = function (v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts);
};

@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014-present, Jon Schlinkert.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

@ -0,0 +1,237 @@
# fill-range [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=W8YFZ425KND68) [![NPM version](https://img.shields.io/npm/v/fill-range.svg?style=flat)](https://www.npmjs.com/package/fill-range) [![NPM monthly downloads](https://img.shields.io/npm/dm/fill-range.svg?style=flat)](https://npmjs.org/package/fill-range) [![NPM total downloads](https://img.shields.io/npm/dt/fill-range.svg?style=flat)](https://npmjs.org/package/fill-range) [![Linux Build Status](https://img.shields.io/travis/jonschlinkert/fill-range.svg?style=flat&label=Travis)](https://travis-ci.org/jonschlinkert/fill-range)
> Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`
Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
## Install
Install with [npm](https://www.npmjs.com/):
```sh
$ npm install --save fill-range
```
## Usage
Expands numbers and letters, optionally using a `step` as the last argument. _(Numbers may be defined as JavaScript numbers or strings)_.
```js
const fill = require('fill-range');
// fill(from, to[, step, options]);
console.log(fill('1', '10')); //=> ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
console.log(fill('1', '10', { toRegex: true })); //=> [1-9]|10
```
**Params**
* `from`: **{String|Number}** the number or letter to start with
* `to`: **{String|Number}** the number or letter to end with
* `step`: **{String|Number|Object|Function}** Optionally pass a [step](#optionsstep) to use.
* `options`: **{Object|Function}**: See all available [options](#options)
## Examples
By default, an array of values is returned.
**Alphabetical ranges**
```js
console.log(fill('a', 'e')); //=> ['a', 'b', 'c', 'd', 'e']
console.log(fill('A', 'E')); //=> [ 'A', 'B', 'C', 'D', 'E' ]
```
**Numerical ranges**
Numbers can be defined as actual numbers or strings.
```js
console.log(fill(1, 5)); //=> [ 1, 2, 3, 4, 5 ]
console.log(fill('1', '5')); //=> [ 1, 2, 3, 4, 5 ]
```
**Negative ranges**
Numbers can be defined as actual numbers or strings.
```js
console.log(fill('-5', '-1')); //=> [ '-5', '-4', '-3', '-2', '-1' ]
console.log(fill('-5', '5')); //=> [ '-5', '-4', '-3', '-2', '-1', '0', '1', '2', '3', '4', '5' ]
```
**Steps (increments)**
```js
// numerical ranges with increments
console.log(fill('0', '25', 4)); //=> [ '0', '4', '8', '12', '16', '20', '24' ]
console.log(fill('0', '25', 5)); //=> [ '0', '5', '10', '15', '20', '25' ]
console.log(fill('0', '25', 6)); //=> [ '0', '6', '12', '18', '24' ]
// alphabetical ranges with increments
console.log(fill('a', 'z', 4)); //=> [ 'a', 'e', 'i', 'm', 'q', 'u', 'y' ]
console.log(fill('a', 'z', 5)); //=> [ 'a', 'f', 'k', 'p', 'u', 'z' ]
console.log(fill('a', 'z', 6)); //=> [ 'a', 'g', 'm', 's', 'y' ]
```
## Options
### options.step
**Type**: `number` (formatted as a string or number)
**Default**: `undefined`
**Description**: The increment to use for the range. Can be used with letters or numbers.
**Example(s)**
```js
// numbers
console.log(fill('1', '10', 2)); //=> [ '1', '3', '5', '7', '9' ]
console.log(fill('1', '10', 3)); //=> [ '1', '4', '7', '10' ]
console.log(fill('1', '10', 4)); //=> [ '1', '5', '9' ]
// letters
console.log(fill('a', 'z', 5)); //=> [ 'a', 'f', 'k', 'p', 'u', 'z' ]
console.log(fill('a', 'z', 7)); //=> [ 'a', 'h', 'o', 'v' ]
console.log(fill('a', 'z', 9)); //=> [ 'a', 'j', 's' ]
```
### options.strictRanges
**Type**: `boolean`
**Default**: `false`
**Description**: By default, `null` is returned when an invalid range is passed. Enable this option to throw a `RangeError` on invalid ranges.
**Example(s)**
The following are all invalid:
```js
fill('1.1', '2'); // decimals not supported in ranges
fill('a', '2'); // incompatible range values
fill(1, 10, 'foo'); // invalid "step" argument
```
### options.stringify
**Type**: `boolean`
**Default**: `undefined`
**Description**: Cast all returned values to strings. By default, integers are returned as numbers.
**Example(s)**
```js
console.log(fill(1, 5)); //=> [ 1, 2, 3, 4, 5 ]
console.log(fill(1, 5, { stringify: true })); //=> [ '1', '2', '3', '4', '5' ]
```
### options.toRegex
**Type**: `boolean`
**Default**: `undefined`
**Description**: Create a regex-compatible source string, instead of expanding values to an array.
**Example(s)**
```js
// alphabetical range
console.log(fill('a', 'e', { toRegex: true })); //=> '[a-e]'
// alphabetical with step
console.log(fill('a', 'z', 3, { toRegex: true })); //=> 'a|d|g|j|m|p|s|v|y'
// numerical range
console.log(fill('1', '100', { toRegex: true })); //=> '[1-9]|[1-9][0-9]|100'
// numerical range with zero padding
console.log(fill('000001', '100000', { toRegex: true }));
//=> '0{5}[1-9]|0{4}[1-9][0-9]|0{3}[1-9][0-9]{2}|0{2}[1-9][0-9]{3}|0[1-9][0-9]{4}|100000'
```
### options.transform
**Type**: `function`
**Default**: `undefined`
**Description**: Customize each value in the returned array (or [string](#optionstoRegex)). _(you can also pass this function as the last argument to `fill()`)_.
**Example(s)**
```js
// add zero padding
console.log(fill(1, 5, value => String(value).padStart(4, '0')));
//=> ['0001', '0002', '0003', '0004', '0005']
```
## About
<details>
<summary><strong>Contributing</strong></summary>
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
</details>
<details>
<summary><strong>Running Tests</strong></summary>
Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
```sh
$ npm install && npm test
```
</details>
<details>
<summary><strong>Building docs</strong></summary>
_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
To generate the readme, run the following command:
```sh
$ npm install -g verbose/verb#dev verb-generate-readme && verb
```
</details>
### Contributors
| **Commits** | **Contributor** |
| --- | --- |
| 116 | [jonschlinkert](https://github.com/jonschlinkert) |
| 4 | [paulmillr](https://github.com/paulmillr) |
| 2 | [realityking](https://github.com/realityking) |
| 2 | [bluelovers](https://github.com/bluelovers) |
| 1 | [edorivai](https://github.com/edorivai) |
| 1 | [wtgtybhertgeghgtwtg](https://github.com/wtgtybhertgeghgtwtg) |
### Author
**Jon Schlinkert**
* [GitHub Profile](https://github.com/jonschlinkert)
* [Twitter Profile](https://twitter.com/jonschlinkert)
* [LinkedIn Profile](https://linkedin.com/in/jonschlinkert)
Please consider supporting me on Patreon, or [start your own Patreon page](https://patreon.com/invite/bxpbvm)!
<a href="https://www.patreon.com/jonschlinkert">
<img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" height="50">
</a>
### License
Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert).
Released under the [MIT License](LICENSE).
***
_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on April 08, 2019._

@ -0,0 +1,248 @@
/*!
* fill-range <https://github.com/jonschlinkert/fill-range>
*
* Copyright (c) 2014-present, Jon Schlinkert.
* Licensed under the MIT License.
*/
'use strict';
const util = require('util');
const toRegexRange = require('to-regex-range');
const isObject = val => val !== null && typeof val === 'object' && !Array.isArray(val);
const transform = toNumber => {
return value => toNumber === true ? Number(value) : String(value);
};
const isValidValue = value => {
return typeof value === 'number' || (typeof value === 'string' && value !== '');
};
const isNumber = num => Number.isInteger(+num);
const zeros = input => {
let value = `${input}`;
let index = -1;
if (value[0] === '-') value = value.slice(1);
if (value === '0') return false;
while (value[++index] === '0');
return index > 0;
};
const stringify = (start, end, options) => {
if (typeof start === 'string' || typeof end === 'string') {
return true;
}
return options.stringify === true;
};
const pad = (input, maxLength, toNumber) => {
if (maxLength > 0) {
let dash = input[0] === '-' ? '-' : '';
if (dash) input = input.slice(1);
input = (dash + input.padStart(dash ? maxLength - 1 : maxLength, '0'));
}
if (toNumber === false) {
return String(input);
}
return input;
};
const toMaxLen = (input, maxLength) => {
let negative = input[0] === '-' ? '-' : '';
if (negative) {
input = input.slice(1);
maxLength--;
}
while (input.length < maxLength) input = '0' + input;
return negative ? ('-' + input) : input;
};
const toSequence = (parts, options, maxLen) => {
parts.negatives.sort((a, b) => a < b ? -1 : a > b ? 1 : 0);
parts.positives.sort((a, b) => a < b ? -1 : a > b ? 1 : 0);
let prefix = options.capture ? '' : '?:';
let positives = '';
let negatives = '';
let result;
if (parts.positives.length) {
positives = parts.positives.map(v => toMaxLen(String(v), maxLen)).join('|');
}
if (parts.negatives.length) {
negatives = `-(${prefix}${parts.negatives.map(v => toMaxLen(String(v), maxLen)).join('|')})`;
}
if (positives && negatives) {
result = `${positives}|${negatives}`;
} else {
result = positives || negatives;
}
if (options.wrap) {
return `(${prefix}${result})`;
}
return result;
};
const toRange = (a, b, isNumbers, options) => {
if (isNumbers) {
return toRegexRange(a, b, { wrap: false, ...options });
}
let start = String.fromCharCode(a);
if (a === b) return start;
let stop = String.fromCharCode(b);
return `[${start}-${stop}]`;
};
const toRegex = (start, end, options) => {
if (Array.isArray(start)) {
let wrap = options.wrap === true;
let prefix = options.capture ? '' : '?:';
return wrap ? `(${prefix}${start.join('|')})` : start.join('|');
}
return toRegexRange(start, end, options);
};
const rangeError = (...args) => {
return new RangeError('Invalid range arguments: ' + util.inspect(...args));
};
const invalidRange = (start, end, options) => {
if (options.strictRanges === true) throw rangeError([start, end]);
return [];
};
const invalidStep = (step, options) => {
if (options.strictRanges === true) {
throw new TypeError(`Expected step "${step}" to be a number`);
}
return [];
};
const fillNumbers = (start, end, step = 1, options = {}) => {
let a = Number(start);
let b = Number(end);
if (!Number.isInteger(a) || !Number.isInteger(b)) {
if (options.strictRanges === true) throw rangeError([start, end]);
return [];
}
// fix negative zero
if (a === 0) a = 0;
if (b === 0) b = 0;
let descending = a > b;
let startString = String(start);
let endString = String(end);
let stepString = String(step);
step = Math.max(Math.abs(step), 1);
let padded = zeros(startString) || zeros(endString) || zeros(stepString);
let maxLen = padded ? Math.max(startString.length, endString.length, stepString.length) : 0;
let toNumber = padded === false && stringify(start, end, options) === false;
let format = options.transform || transform(toNumber);
if (options.toRegex && step === 1) {
return toRange(toMaxLen(start, maxLen), toMaxLen(end, maxLen), true, options);
}
let parts = { negatives: [], positives: [] };
let push = num => parts[num < 0 ? 'negatives' : 'positives'].push(Math.abs(num));
let range = [];
let index = 0;
while (descending ? a >= b : a <= b) {
if (options.toRegex === true && step > 1) {
push(a);
} else {
range.push(pad(format(a, index), maxLen, toNumber));
}
a = descending ? a - step : a + step;
index++;
}
if (options.toRegex === true) {
return step > 1
? toSequence(parts, options, maxLen)
: toRegex(range, null, { wrap: false, ...options });
}
return range;
};
const fillLetters = (start, end, step = 1, options = {}) => {
if ((!isNumber(start) && start.length > 1) || (!isNumber(end) && end.length > 1)) {
return invalidRange(start, end, options);
}
let format = options.transform || (val => String.fromCharCode(val));
let a = `${start}`.charCodeAt(0);
let b = `${end}`.charCodeAt(0);
let descending = a > b;
let min = Math.min(a, b);
let max = Math.max(a, b);
if (options.toRegex && step === 1) {
return toRange(min, max, false, options);
}
let range = [];
let index = 0;
while (descending ? a >= b : a <= b) {
range.push(format(a, index));
a = descending ? a - step : a + step;
index++;
}
if (options.toRegex === true) {
return toRegex(range, null, { wrap: false, options });
}
return range;
};
const fill = (start, end, step, options = {}) => {
if (end == null && isValidValue(start)) {
return [start];
}
if (!isValidValue(start) || !isValidValue(end)) {
return invalidRange(start, end, options);
}
if (typeof step === 'function') {
return fill(start, end, 1, { transform: step });
}
if (isObject(step)) {
return fill(start, end, 0, step);
}
let opts = { ...options };
if (opts.capture === true) opts.wrap = true;
step = step || opts.step || 1;
if (!isNumber(step)) {
if (step != null && !isObject(step)) return invalidStep(step, opts);
return fill(start, end, 1, step);
}
if (isNumber(start) && isNumber(end)) {
return fillNumbers(start, end, step, opts);
}
return fillLetters(start, end, Math.max(Math.abs(step), 1), opts);
};
module.exports = fill;

@ -0,0 +1,74 @@
{
"name": "fill-range",
"description": "Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`",
"version": "7.1.1",
"homepage": "https://github.com/jonschlinkert/fill-range",
"author": "Jon Schlinkert (https://github.com/jonschlinkert)",
"contributors": [
"Edo Rivai (edo.rivai.nl)",
"Jon Schlinkert (http://twitter.com/jonschlinkert)",
"Paul Miller (paulmillr.com)",
"Rouven Weßling (www.rouvenwessling.de)",
"(https://github.com/wtgtybhertgeghgtwtg)"
],
"repository": "jonschlinkert/fill-range",
"bugs": {
"url": "https://github.com/jonschlinkert/fill-range/issues"
},
"license": "MIT",
"files": [
"index.js"
],
"main": "index.js",
"engines": {
"node": ">=8"
},
"scripts": {
"lint": "eslint --cache --cache-location node_modules/.cache/.eslintcache --report-unused-disable-directives --ignore-path .gitignore .",
"mocha": "mocha --reporter dot",
"test": "npm run lint && npm run mocha",
"test:ci": "npm run test:cover",
"test:cover": "nyc npm run mocha"
},
"dependencies": {
"to-regex-range": "^5.0.1"
},
"devDependencies": {
"gulp-format-md": "^2.0.0",
"mocha": "^6.1.1",
"nyc": "^15.1.0"
},
"keywords": [
"alpha",
"alphabetical",
"array",
"bash",
"brace",
"expand",
"expansion",
"fill",
"glob",
"match",
"matches",
"matching",
"number",
"numerical",
"range",
"ranges",
"regex",
"sh"
],
"verb": {
"toc": false,
"layout": "default",
"tasks": [
"readme"
],
"plugins": [
"gulp-format-md"
],
"lint": {
"reflinks": true
}
}
}

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