package?com.genlot.lenb.util;

import?android.content.Context;
import?android.os.Environment;
import?android.os.StatFs;

import?java.io.BufferedReader;
import?java.io.File;
import?java.io.FileNotFoundException;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.InputStreamReader;
import?java.text.SimpleDateFormat;
import?java.util.Calendar;
import?java.util.Date;

/**
?*?log日志統計保存
?*?日志最多保存3天，如果內存不足，逐個刪除近3+i?天日志
?*
?*?@author?songzhenzhen
?*/

public?class?LogcatHelper?{
????private?static?LogcatHelper?instance?=?null;
????private?int?order?=?0;
????private?int?mPId;
????private?String?pathLogcat;
????private?LogThread?mLogThread?=?null;
????private?String?mylogfilename?=?“.log“;
????private?int?SDCARD_LOG_FILE_SAVE_DAYS?=?3;
????private?static?SimpleDateFormat?myLogSdf?=?new?SimpleDateFormat（“yyyy-MM-dd?HH:mm:ss“）;
????private?static?SimpleDateFormat?logfile?=?new?SimpleDateFormat（“yyyyMMdd?HH:mm:ss“）;

???
????public?void?init（Context?context）?{
????????if?（Environment.getExternalStorageState（）.equals（Environment.MEDIA_MOUNTED））?{
????????????pathLogcat?=?Environment.getExternalStorageDirectory（）.getAbsolutePath（）?+?File.separator?+?“HN_Log“;
????????}?else?{
			pathLogcat?=?context.getFilesDir（）.getAbsolutePath（）?+?File.separator?+?“HN_Log“;
????????}
????????File?file?=?new?File（pathLogcat）;
????????if?（!file.exists（））?{
????????????file.mkdirs（）;
????????}?else?{
????????????if?（availableSpace（））?{
????????????????delFile（order）;
????????????}?else?{
????????????????deleteDirectory（pathLogcat）;
????????????}
????????}
????}

??
????private?boolean?availableSpace（）?{
????????File?root?=?Environment.getRootDirectory（）;
????????StatFs?sf?=?new?StatFs（root.getPath（））;
????????long?blockSize?=?sf.getBlockSize（）;
????????long?blockCount?=?sf.getBlockCount（）;
????????long?availCount?=?sf.getAvailableBlocks（）;
???????
????????long?totalBlocks?=?blockSize?*?blockCount?/?1024;
??????
????????long?availableBlocks?=?availCount?*?blockSize?/?1024;
????????if?（availableBlocks?????????????return?true;
????????}?else?{
????????????return?false;
????????}
????}

????public?static?LogcatHelper?getInstance（Context?context）?{
????????if?（instance?==?null）?{
????????????instance?=?new?LogcatHelper（context）;
????????}
????????return?instance;
????}

????private?LogcatHelper（Context?context）?{
????????init（context）;
????????mPId?=?android.os.Process.myPid（）;
????}

????public?void?start（）?{
????????if?（mLogThread?==?null）
????????????mLogThread?=?new?LogThread（String.valueOf（mPId）?pathLogcat）;
????????mLogThread.start（）;
????}

????public?void?stop（）?{
????????if?（mLogThread?!=?null）?{
????????????mLogThread.stopLogs（）;
????????????mLogThread?=?null;
????????}
????}

????private?class?LogThread?extends?Thread?{
????????private?Process?logcatProc;
????????private?BufferedReader?mReader?=?null;
????????private?boolean?mRunning