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Update BackupUtils.java

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pwiz98tyo 2 months ago
parent 1743880e1c
commit 3453fe47e3
1 changed files with 245 additions and 177 deletions
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java/net/micode/notes/tool/BackupUtils.java
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@ -18,6 +18,7 @@ package net.micode.notes.tool;
import android.content.Context;
import android.database.Cursor;
import android.os.Build;
import android.os.Environment;
import android.text.TextUtils;
import android.text.format.DateFormat;
@ -29,12 +30,14 @@ import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.OutputStreamWriter;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
public class BackupUtils {
private static final String TAG = "BackupUtils";
@ -62,6 +65,8 @@ public class BackupUtils {
public static final int STATE_SYSTEM_ERROR = 3;
// Backup or restore success
public static final int STATE_SUCCESS = 4;
// Permission denied
public static final int STATE_PERMISSION_DENIED = 5;
private TextExport mTextExport;
@ -90,14 +95,15 @@ public class BackupUtils {
NoteColumns.ID,
NoteColumns.MODIFIED_DATE,
NoteColumns.SNIPPET,
NoteColumns.TYPE
NoteColumns.TYPE,
NoteColumns.PARENT_ID
};
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 int NOTE_COLUMN_TYPE = 3;
private static final int NOTE_COLUMN_PARENT_ID = 4;
private static final String[] DATA_PROJECTION = {
DataColumns.CONTENT,
@ -109,11 +115,8 @@ public class BackupUtils {
};
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;
@ -124,12 +127,17 @@ public class BackupUtils {
private Context mContext;
private String mFileName;
private String mFileDirectory;
private BufferedWriter mWriter;
private int mNotesCount;
private int mFoldersCount;
public TextExport(Context context) {
TEXT_FORMAT = context.getResources().getStringArray(R.array.format_for_exported_note);
mContext = context;
mFileName = "";
mFileDirectory = "";
mNotesCount = 0;
mFoldersCount = 0;
}
private String getFormat(int id) {
@ -137,208 +145,268 @@ public class BackupUtils {
}
/**
* Export the folder identified by folder id to text
* Export notes to text file
*/
private void exportFolderToText(String folderId, PrintStream ps) {
// Query notes belong to this folder
Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] {
folderId
}, null);
public int exportToText() {
if (!externalStorageAvailable()) {
Log.d(TAG, "Media was not mounted");
return STATE_SD_CARD_UNMOUONTED;
}
if (notesCursor != null) {
if (notesCursor.moveToFirst()) {
do {
// Print note's last modified date
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);
} while (notesCursor.moveToNext());
}
notesCursor.close();
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 STATE_SYSTEM_ERROR;
}
mFileName = file.getName();
mFileDirectory = mContext.getString(R.string.file_path);
// 使用try-with-resources确保资源释放
try (BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.UTF_8))) {
mWriter = writer;
// 导出文件夹和笔记
exportFoldersAndNotes();
// 写入导出统计信息
writeExportSummary();
Log.d(TAG, "Export successful. Exported " + mFoldersCount + " folders and " + mNotesCount + " notes.");
return STATE_SUCCESS;
} catch (IOException e) {
Log.e(TAG, "Error during export: " + e.getMessage(), e);
return STATE_SYSTEM_ERROR;
}
}
/**
* Export note identified by id to a print stream
* 写入导出摘要信息
*/
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) {
if (dataCursor.moveToFirst()) {
private void writeExportSummary() throws IOException {
mWriter.write("\n");
mWriter.write("==============================\n");
mWriter.write(mContext.getString(R.string.export_summary) + "\n");
mWriter.write(mContext.getString(R.string.export_date) + ": "
+ DateFormat.format(mContext.getString(R.string.format_datetime_ymdhm), System.currentTimeMillis()) + "\n");
mWriter.write(mContext.getString(R.string.folder_count) + ": " + mFoldersCount + "\n");
mWriter.write(mContext.getString(R.string.note_count) + ": " + mNotesCount + "\n");
mWriter.write("==============================\n");
}
/**
* 导出所有文件夹和笔记
*/
private void exportFoldersAndNotes() throws IOException {
// 首先导出文件夹和其中的笔记
exportFolders();
// 导出根文件夹中的笔记
exportRootNotes();
}
/**
* 导出所有文件夹
*/
private void exportFolders() throws IOException {
// 查询所有文件夹
String selection = "(" + NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER + " AND "
+ NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + ") OR "
+ NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER;
try (Cursor folderCursor = mContext.getContentResolver().query(
Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION,
selection, null, null)) {
if (folderCursor != null && folderCursor.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)) {
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());
mFoldersCount++;
exportFolder(folderCursor);
} while (folderCursor.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
* 导出单个文件夹及其包含的笔记
*/
public int exportToText() {
if (!externalStorageAvailable()) {
Log.d(TAG, "Media was not mounted");
return STATE_SD_CARD_UNMOUONTED;
private void exportFolder(Cursor folderCursor) throws IOException {
String folderId = folderCursor.getString(NOTE_COLUMN_ID);
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);
}
PrintStream ps = getExportToTextPrintStream();
if (ps == null) {
Log.e(TAG, "get print stream error");
return STATE_SYSTEM_ERROR;
if (!TextUtils.isEmpty(folderName)) {
mWriter.write(String.format(getFormat(FORMAT_FOLDER_NAME), folderName));
mWriter.newLine();
}
// First export folder and its notes
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()) {
// 导出文件夹中的笔记
exportNotesInFolder(folderId);
// 添加文件夹分隔线
mWriter.write("\n");
}
/**
* 导出指定文件夹中的所有笔记
*/
private void exportNotesInFolder(String folderId) throws IOException {
try (Cursor notesCursor = mContext.getContentResolver().query(Notes.CONTENT_NOTE_URI,
NOTE_PROJECTION, NoteColumns.PARENT_ID + "=?", new String[] { folderId }, null)) {
if (notesCursor != null && notesCursor.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());
mNotesCount++;
exportNote(notesCursor);
} while (notesCursor.moveToNext());
}
folderCursor.close();
}
// Export notes in root's folder
Cursor noteCursor = mContext.getContentResolver().query(
}
/**
* 导出根文件夹中的笔记
*/
private void exportRootNotes() throws IOException {
try (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()) {
NoteColumns.TYPE + "=" + Notes.TYPE_NOTE + " AND " + NoteColumns.PARENT_ID + "=0",
null, null)) {
if (noteCursor != null && 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);
mNotesCount++;
exportNote(noteCursor);
} while (noteCursor.moveToNext());
}
noteCursor.close();
}
ps.close();
return STATE_SUCCESS;
}
/**
* Get a print stream pointed to the file {@generateExportedTextFile}
* 导出单个笔记
*/
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;
private void exportNote(Cursor noteCursor) throws IOException {
// 打印笔记的最后修改日期
mWriter.write(String.format(getFormat(FORMAT_NOTE_DATE),
DateFormat.format(mContext.getString(R.string.format_datetime_mdhm),
noteCursor.getLong(NOTE_COLUMN_MODIFIED_DATE))));
mWriter.newLine();
// 查询并导出笔记的数据
String noteId = noteCursor.getString(NOTE_COLUMN_ID);
exportNoteData(noteId);
// 添加笔记分隔线
mWriter.write("\n");
}
/**
* 导出笔记的所有数据
*/
private void exportNoteData(String noteId) throws IOException {
try (Cursor dataCursor = mContext.getContentResolver().query(Notes.CONTENT_DATA_URI,
DATA_PROJECTION, DataColumns.NOTE_ID + "=?", new String[] { noteId }, null)) {
if (dataCursor != null && dataCursor.moveToFirst()) {
do {
String mimeType = dataCursor.getString(DATA_COLUMN_MIME_TYPE);
if (DataConstants.CALL_NOTE.equals(mimeType)) {
exportCallNote(dataCursor);
} else if (DataConstants.NOTE.equals(mimeType)) {
exportTextNote(dataCursor);
}
} while (dataCursor.moveToNext());
}
}
mFileName = file.getName();
mFileDirectory = mContext.getString(R.string.file_path);
PrintStream ps = null;
try {
FileOutputStream fos = new FileOutputStream(file);
ps = new PrintStream(fos);
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
} catch (NullPointerException e) {
e.printStackTrace();
return null;
}
/**
* 导出通话记录笔记
*/
private void exportCallNote(Cursor dataCursor) throws IOException {
// 打印电话号码
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)) {
mWriter.write(String.format(getFormat(FORMAT_NOTE_CONTENT), phoneNumber));
mWriter.newLine();
}
// 打印通话日期
mWriter.write(String.format(getFormat(FORMAT_NOTE_CONTENT),
DateFormat.format(mContext.getString(R.string.format_datetime_mdhm), callDate)));
mWriter.newLine();
// 打印通话附件位置
if (!TextUtils.isEmpty(location)) {
mWriter.write(String.format(getFormat(FORMAT_NOTE_CONTENT), location));
mWriter.newLine();
}
}
/**
* 导出文本笔记
*/
private void exportTextNote(Cursor dataCursor) throws IOException {
String content = dataCursor.getString(DATA_COLUMN_CONTENT);
if (!TextUtils.isEmpty(content)) {
mWriter.write(String.format(getFormat(FORMAT_NOTE_CONTENT), content));
mWriter.newLine();
}
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());
sb.append(context.getString(filePathResId));
File filedir = new File(sb.toString());
sb.append(context.getString(
fileNameFormatResId,
DateFormat.format(context.getString(R.string.format_date_ymd),
System.currentTimeMillis())));
File file = new File(sb.toString());
try {
if (!filedir.exists()) {
filedir.mkdir();
/**
* Generate the text file to store imported data
*/
private static File generateFileMountedOnSDcard(Context context, int filePathResId, int fileNameFormatResId) {
StringBuilder sb = new StringBuilder();
// 适配Android 10+的存储访问
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
sb.append(context.getExternalFilesDir(null));
} else {
sb.append(Environment.getExternalStorageDirectory());
}
if (!file.exists()) {
file.createNewFile();
sb.append(context.getString(filePathResId));
File filedir = new File(sb.toString());
// 确保目录存在
if (!filedir.exists() && !filedir.mkdirs()) {
Log.e(TAG, "Failed to create directory: " + filedir.getAbsolutePath());
return null;
}
return file;
} catch (SecurityException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// 构建文件名
sb.append(context.getString(
fileNameFormatResId,
DateFormat.format(context.getString(R.string.format_date_ymd),
System.currentTimeMillis())));
File file = new File(sb.toString());
return null;
try {
if (!file.exists() && !file.createNewFile()) {
Log.e(TAG, "Failed to create file: " + file.getAbsolutePath());
return null;
}
return file;
} catch (SecurityException | IOException e) {
Log.e(TAG, "Error creating file: " + e.getMessage(), e);
return null;
}
}
}
}

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