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102 lines
2.7 KiB
102 lines
2.7 KiB
use core::fmt;
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use arch::driver::serial::COM1;
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mod vga_writer;
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pub fn init() {
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static LOGGER: SimpleLogger = SimpleLogger;
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log::set_logger(&LOGGER).unwrap();
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log::set_max_level(LevelFilter::Debug);
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}
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macro_rules! print {
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($($arg:tt)*) => ({
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$crate::io::print(format_args!($($arg)*));
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});
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}
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macro_rules! println {
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($fmt:expr) => (print!(concat!($fmt, "\n")));
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($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
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}
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/// Add escape sequence to print with color in Linux console
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macro_rules! with_color {
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($args: ident, $color: ident) => {{
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let (show, code) = color_to_console_code($color);
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format_args!("{}[{};{}m{}{}[0m", 27 as char, show.clone(), code + 30, $args, 27 as char)
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}};
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}
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use arch::driver::vga::Color;
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fn print_in_color(args: fmt::Arguments, color: Color) {
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use core::fmt::Write;
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use arch::driver::vga::*;
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// {
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// let mut writer = vga_writer::VGA_WRITER.lock();
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// writer.set_color(color);
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// writer.write_fmt(args).unwrap();
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// }
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// TODO: 解决死锁问题
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// 若进程在持有锁时被中断，中断处理程序请求输出，就会死锁
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unsafe{ COM1.force_unlock(); }
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COM1.lock().write_fmt(with_color!(args, color)).unwrap();
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}
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pub fn print(args: fmt::Arguments) {
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use core::fmt::Write;
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unsafe { COM1.force_unlock(); }
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COM1.lock().write_fmt(args).unwrap();
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}
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use log;
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use log::{Record, Level, Metadata, Log, SetLoggerError, LevelFilter};
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struct SimpleLogger;
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impl Log for SimpleLogger {
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fn enabled(&self, metadata: &Metadata) -> bool {
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true
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// metadata.level() <= Level::Info
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}
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fn log(&self, record: &Record) {
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if self.enabled(record.metadata()) {
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print_in_color(format_args!("{}\n", record.args()), Color::from(record.level()));
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}
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}
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fn flush(&self) {}
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}
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impl From<Level> for Color {
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fn from(level: Level) -> Self {
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match level {
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Level::Error => Color::Red,
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Level::Warn => Color::Yellow,
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Level::Info => Color::Blue,
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Level::Debug => Color::LightRed,
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Level::Trace => Color::DarkGray,
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}
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}
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}
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fn color_to_console_code(color: Color) -> (u8, u8) {
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match color {
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Color::Black => (0, 0),
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Color::Blue => (0, 4),
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Color::Green => (0, 2),
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Color::Cyan => (0, 6),
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Color::Red => (0, 1),
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Color::Magenta => (0, 5),
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Color::Brown => (0, 3),
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Color::LightGray => (1, 7),
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Color::DarkGray => (0, 7),
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Color::LightBlue => (1, 4),
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Color::LightGreen => (1, 2),
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Color::LightCyan => (1, 6),
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Color::LightRed => (1, 1),
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Color::Pink => (1, 5),
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Color::Yellow => (1, 3),
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Color::White => (1, 0),
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}
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} |