From e164a12df65c8b10b65eda4ab9edec1fe24ca499 Mon Sep 17 00:00:00 2001 From: yysong <2306845914@qq.com> Date: Mon, 22 Jan 2024 20:49:19 +0800 Subject: [PATCH] DEL --- src%2Ftool/BackupUtils.java | 347 ------------------------------------ 1 file changed, 347 deletions(-) delete mode 100644 src%2Ftool/BackupUtils.java diff --git a/src%2Ftool/BackupUtils.java b/src%2Ftool/BackupUtils.java deleted file mode 100644 index 2f03f61..0000000 --- a/src%2Ftool/BackupUtils.java +++ /dev/null @@ -1,347 +0,0 @@ -/* - * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package net.micode.notes.tool; - -import android.content.Context; -import android.database.Cursor; -import android.os.Environment; -import android.text.TextUtils; -import android.text.format.DateFormat; -import android.util.Log; - -import net.micode.notes.R; -import net.micode.notes.data.Notes; -import net.micode.notes.data.Notes.DataColumns; -import net.micode.notes.data.Notes.DataConstants; -import net.micode.notes.data.Notes.NoteColumns; - -import java.io.File; -import java.io.FileNotFoundException; -import java.io.FileOutputStream; -import java.io.IOException; -import java.io.PrintStream; - - -public class BackupUtils { - private static final String TAG = "BackupUtils"; - // Singleton stuff - private static BackupUtils sInstance; - - public static synchronized BackupUtils getInstance(Context context) { - //ynchronized 关键字，代表这个方法加锁,相当于不管哪一个线程（例如线程A） - //运行到这个方法时,都要检查有没有其它线程B（或者C、 D等）正在用这个方法(或者该类的其他同步方法)，有的话要等正在使用synchronized方法的线程B（或者C 、D）运行完这个方法后再运行此线程A,没有的话,锁定调用者,然后直接运行。 - //它包括两种用法：synchronized 方法和 synchronized 块。 - if (sInstance == null) { - //如果当前备份不存在，则新声明一个 - sInstance = new BackupUtils(context); - } - return sInstance; - } - - /** - * Following states are signs to represents backup or restore - * status - */ - // Currently, the sdcard is not mounted SD卡没有被装入手机 - public static final int STATE_SD_CARD_UNMOUONTED = 0; - // The backup file not exist 备份文件夹不存在 - public static final int STATE_BACKUP_FILE_NOT_EXIST = 1; - // The data is not well formated, may be changed by other programs 数据已被破坏，可能被修改 - public static final int STATE_DATA_DESTROIED = 2; - // Some run-time exception which causes restore or backup fails 超时异常 - public static final int STATE_SYSTEM_ERROR = 3; - // Backup or restore success 成功存储 - public static final int STATE_SUCCESS = 4; - - private TextExport mTextExport; - - private BackupUtils(Context context) { //初始化函数 - mTextExport = new TextExport(context); - } - - private static boolean externalStorageAvailable() { //外部存储功能是否可用 - return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()); - } - - public int exportToText() { - return mTextExport.exportToText(); - } - - public String getExportedTextFileName() { - return mTextExport.mFileName; - } - - public String getExportedTextFileDir() { - return mTextExport.mFileDirectory; - } - - private static class TextExport { - private static final String[] NOTE_PROJECTION = { - NoteColumns.ID, - NoteColumns.MODIFIED_DATE, - NoteColumns.SNIPPET, - NoteColumns.TYPE - }; - - private static final int NOTE_COLUMN_ID = 0; - - private static final int NOTE_COLUMN_MODIFIED_DATE = 1; - - private static final int NOTE_COLUMN_SNIPPET = 2; - - private static final String[] DATA_PROJECTION = { - DataColumns.CONTENT, - DataColumns.MIME_TYPE, - DataColumns.DATA1, - DataColumns.DATA2, - DataColumns.DATA3, - DataColumns.DATA4, - }; - - private static final int DATA_COLUMN_CONTENT = 0; - - private static final int DATA_COLUMN_MIME_TYPE = 1; - - private static final int DATA_COLUMN_CALL_DATE = 2; - - private static final int DATA_COLUMN_PHONE_NUMBER = 4; - - private final String [] TEXT_FORMAT; - private static final int FORMAT_FOLDER_NAME = 0; - private static final int FORMAT_NOTE_DATE = 1; - private static final int FORMAT_NOTE_CONTENT = 2; - - private Context mContext; - private String mFileName; - private String mFileDirectory; - - public TextExport(Context context) { - TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note); - mContext = context; - mFileName = ""; //为什么为空? - mFileDirectory = ""; - } - - private String getFormat(int id) { //获取文本的组成部分 - return TEXT_FORMAT[id]; - } - - /** - * Export the folder identified by folder id to text - */ - private void exportFolderToText(String folderId, PrintStream ps) { - // Query notes belong to this folder 通过查询parent id是文件夹id的note来选出制定ID文件夹下的Note - Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI, - NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] { - folderId - }, null); - - if (notesCursor != null) { - if (notesCursor.moveToFirst()) { - do { - // Print note's last modified date ps里面保存有这份note的日期 - ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format( - mContext.getString(R.string.format_datetime_mdhm), - notesCursor.getLong(NOTE_COLUMN_MODIFIED_DATE)))); - // Query data belong to this note - String noteId = notesCursor.getString(NOTE_COLUMN_ID); - exportNoteToText(noteId, ps); //将文件导出到text - } while (notesCursor.moveToNext()); - } - notesCursor.close(); - } - } - - /** - * Export note identified by id to a print stream - */ - private void exportNoteToText(String noteId, PrintStream ps) { - Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI, - DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] { - noteId - }, null); - - if (dataCursor != null) { //利用光标来扫描内容，区别为callnote和note两种，靠ps.printline输出 - if (dataCursor.moveToFirst()) { - do { - String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE); - if (DataConstants.CALL_NOTE.equals(mimeType)) { - // Print phone number - String phoneNumber = dataCursor.getString(DATA_COLUMN_PHONE_NUMBER); - long callDate = dataCursor.getLong(DATA_COLUMN_CALL_DATE); - String location = dataCursor.getString(DATA_COLUMN_CONTENT); - - if (!TextUtils.isEmpty(phoneNumber)) { //判断是否为空字符 - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), - phoneNumber)); - } - // Print call date - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), DateFormat - .format(mContext.getString(R.string.format_datetime_mdhm), - callDate))); - // Print call attachment location - if (!TextUtils.isEmpty(location)) { - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), - location)); - } - } else if (DataConstants.NOTE.equals(mimeType)) { - String content = dataCursor.getString(DATA_COLUMN_CONTENT); - if (!TextUtils.isEmpty(content)) { - ps.println(String.format(getFormat(FORMAT_NOTE_CONTENT), - content)); - } - } - } while (dataCursor.moveToNext()); - } - dataCursor.close(); - } - // print a line separator between note - try { - ps.write(new byte[] { - Character.LINE_SEPARATOR, Character.LETTER_NUMBER - }); - } catch (IOException e) { - Log.e(TAG, e.toString()); - } - } - - /** - * Note will be exported as text which is user readable - */ - public int exportToText() { //总函数，调用上面的exportFolder和exportNote - if (!externalStorageAvailable()) { - Log.d(TAG, "Media was not mounted"); - return STATE_SD_CARD_UNMOUONTED; - } - - PrintStream ps = getExportToTextPrintStream(); - if (ps == null) { - Log.e(TAG, "get print stream error"); - return STATE_SYSTEM_ERROR; - } - // First export folder and its notes 导出文件夹，就是导出里面包含的便签 - Cursor folderCursor = mContext.getContentResolver().query( - Notes.CONTENT_NOTE_URI, - NOTE_PROJECTION, - "(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND " - + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR " - + NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER, null, null); - - if (folderCursor != null) { - if (folderCursor.moveToFirst()) { - do { - // Print folder's name - String folderName = ""; - if(folderCursor.getLong(NOTE_COLUMN_ID) == Notes.ID_CALL_RECORD_FOLDER) { - folderName = mContext.getString(R.string.call_record_folder_name); - } else { - folderName = folderCursor.getString(NOTE_COLUMN_SNIPPET); - } - if (!TextUtils.isEmpty(folderName)) { - ps.println(String.format(getFormat(FORMAT_FOLDER_NAME), folderName)); - } - String folderId = folderCursor.getString(NOTE_COLUMN_ID); - exportFolderToText(folderId, ps); - } while (folderCursor.moveToNext()); - } - folderCursor.close(); - } - - // Export notes in root's folder 将根目录里的便签导出（由于不属于任何文件夹，因此无法通过文件夹导出来实现这一部分便签的导出） - Cursor noteCursor = mContext.getContentResolver().query( - Notes.CONTENT_NOTE_URI, - NOTE_PROJECTION, - NoteColumns.TYPE + "=" + +Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID - + "=0", null, null); - - if (noteCursor != null) { - if (noteCursor.moveToFirst()) { - do { - ps.println(String.format(getFormat(FORMAT_NOTE_DATE), DateFormat.format( - mContext.getString(R.string.format_datetime_mdhm), - noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE)))); - // Query data belong to this note - String noteId = noteCursor.getString(NOTE_COLUMN_ID); - exportNoteToText(noteId, ps); - } while (noteCursor.moveToNext()); - } - noteCursor.close(); - } - ps.close(); - - return STATE_SUCCESS; - } - - /** - * Get a print stream pointed to the file {@generateExportedTextFile} - */ - private PrintStream getExportToTextPrintStream() { - File file = generateFileMountedOnSDcard(mContext, R.string.file_path, - R.string.file_name_txt_format); - if (file == null) { - Log.e(TAG, "create file to exported failed"); - return null; - } - mFileName = file.getName(); - mFileDirectory = mContext.getString(R.string.file_path); - PrintStream ps = null; - try { - FileOutputStream fos = new FileOutputStream(file); - ps = new PrintStream(fos); //将ps输出流输出到特定的文件，目的就是导出到文件，而不是直接输出 - } catch (FileNotFoundException e) { - e.printStackTrace(); - return null; - } catch (NullPointerException e) { - e.printStackTrace(); - return null; - } - return ps; - } - } - - /** - * Generate the text file to store imported data - */ - private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) { - StringBuilder sb = new StringBuilder(); - sb.append(Environment.getExternalStorageDirectory()); //外部（SD卡）的存储路径 - sb.append(context.getString(filePathResId)); //文件的存储路径 - File filedir = new File(sb.toString()); //filedir应该就是用来存储路径信息 - sb.append(context.getString( - fileNameFormatResId, - DateFormat.format(context.getString(R.string.format_date_ymd), - System.currentTimeMillis()))); - File file = new File(sb.toString()); - - try { //如果这些文件不存在，则新建 - if (!filedir.exists()) { - filedir.mkdir(); - } - if (!file.exists()) { - file.createNewFile(); - } - return file; - } catch (SecurityException e) { - e.printStackTrace(); - } catch (IOException e) { - e.printStackTrace(); - } -// try catch 异常处理 - return null; - } -} -