/**
* Copyright 2016 JustWayward Team
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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 com.justwayward.reader.utils;
import android.content.Context;
import android.os.Environment;
import android.util.Log;
import com.justwayward.reader.ReaderApplication;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
/**
* Log工具类，可控制Log输出开关、保存Log到文件、过滤输出等级
*
* @author yuyh.
* @date 16/4/9.
*/
public class LogUtils {
private static Boolean LOG_SWITCH = true; // 日志文件总开关
private static Boolean LOG_TO_FILE = false; // 日志写入文件开关
private static String LOG_TAG = "BookReader"; // 默认的tag
private static char LOG_TYPE = 'v';// 输入日志类型，v代表输出所有信息,w则只输出警告...
private static int LOG_SAVE_DAYS = 7;// sd卡中日志文件的最多保存天数
private final static SimpleDateFormat LOG_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 日志的输出格式
private final static SimpleDateFormat FILE_SUFFIX = new SimpleDateFormat("yyyy-MM-dd");// 日志文件格式
private static String LOG_FILE_PATH; // 日志文件保存路径
private static String LOG_FILE_NAME;// 日志文件保存名称
public static void init(Context context) { // 在Application中初始化
LOG_FILE_PATH = Environment.getExternalStorageDirectory().getPath() + File.separator + ReaderApplication.getsInstance().getPackageName();
LOG_FILE_NAME = "Log";
}
/****************************
* Warn
*********************************/
public static void w(Object msg) {
w(LOG_TAG, msg);
}
public static void w(String tag, Object msg) {
w(tag, msg, null);
}
public static void w(String tag, Object msg, Throwable tr) {
log(tag, msg.toString(), tr, 'w');
}
/***************************
* Error
********************************/
public static void e(Object msg) {
e(LOG_TAG, msg);
}
public static void e(String tag, Object msg) {
e(tag, msg, null);
}
public static void e(String tag, Object msg, Throwable tr) {
log(tag, msg.toString(), tr, 'e');
}
/***************************
* Debug
********************************/
public static void d(Object msg) {
d(LOG_TAG, msg);
}
public static void d(String tag, Object msg) {// 调试信息
d(tag, msg, null);
}
public static void d(String tag, Object msg, Throwable tr) {
log(tag, msg.toString(), tr, 'd');
}
/****************************
* Info
*********************************/
public static void i(Object msg) {
i(LOG_TAG, msg);
}
public static void i(String tag, Object msg) {
i(tag, msg, null);
}
public static void i(String tag, Object msg, Throwable tr) {
log(tag, msg.toString(), tr, 'i');
}
/**************************
* Verbose
********************************/
public static void v(Object msg) {
v(LOG_TAG, msg);
}
public static void v(String tag, Object msg) {
v(tag, msg, null);
}
public static void v(String tag, Object msg, Throwable tr) {
log(tag, msg.toString(), tr, 'v');
}
/**
* 根据tag, msg和等级，输出日志
*
* @param tag
* @param msg
* @param level
*/
private static void log(String tag, String msg, Throwable tr, char level) {
if (LOG_SWITCH) {
if ('e' == level && ('e' == LOG_TYPE || 'v' == LOG_TYPE)) { // 输出错误信息
Log.e(tag, createMessage(msg), tr);
} else if ('w' == level && ('w' == LOG_TYPE || 'v' == LOG_TYPE)) {
Log.w(tag, createMessage(msg), tr);
} else if ('d' == level && ('d' == LOG_TYPE || 'v' == LOG_TYPE)) {
Log.d(tag, createMessage(msg), tr);
} else if ('i' == level && ('d' == LOG_TYPE || 'v' == LOG_TYPE)) {
Log.i(tag, createMessage(msg), tr);
} else {
Log.v(tag, createMessage(msg), tr);
}
if (LOG_TO_FILE)
log2File(String.valueOf(level), tag, msg + tr == null ? "" : "\n" + Log.getStackTraceString(tr));
}
}
private static String getFunctionName() {
StackTraceElement[] sts = Thread.currentThread().getStackTrace();
if (sts == null) {
return null;
}
for (StackTraceElement st : sts) {
if (st.isNativeMethod()) {
continue;
}
if (st.getClassName().equals(Thread.class.getName())) {
continue;
}
if (st.getFileName().equals("LogUtils.java")) {
continue;
}
return "[" + Thread.currentThread().getName() + "("
+ Thread.currentThread().getId() + "): " + st.getFileName()
+ ":" + st.getLineNumber() + "]";
}
return null;
}
private static String createMessage(String msg) {
String functionName = getFunctionName();
String message = (functionName == null ? msg
: (functionName + " - " + msg));
return message;
}
/**
* 打开日志文件并写入日志
*
* @return
**/
private synchronized static void log2File(String mylogtype, String tag, String text) {
Date nowtime = new Date();
String date = FILE_SUFFIX.format(nowtime);
String dateLogContent = LOG_FORMAT.format(nowtime) + ":" + mylogtype + ":" + tag + ":" + text; // 日志输出格式
File destDir = new File(LOG_FILE_PATH);
if (!destDir.exists()) {
destDir.mkdirs();
}
File file = new File(LOG_FILE_PATH, LOG_FILE_NAME + date);
try {
FileWriter filerWriter = new FileWriter(file, true);
BufferedWriter bufWriter = new BufferedWriter(filerWriter);
bufWriter.write(dateLogContent);
bufWriter.newLine();
bufWriter.close();
filerWriter.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 删除指定的日志文件
*/
public static void delFile() {// 删除日志文件
String needDelFiel = FILE_SUFFIX.format(getDateBefore());
File file = new File(LOG_FILE_PATH, needDelFiel + LOG_FILE_NAME);
if (file.exists()) {
file.delete();
}
}
/**
* 得到LOG_SAVE_DAYS天前的日期
*
* @return
*/
private static Date getDateBefore() {
Date nowtime = new Date();
Calendar now = Calendar.getInstance();
now.setTime(nowtime);
now.set(Calendar.DATE, now.get(Calendar.DATE) - LOG_SAVE_DAYS);
return now.getTime();
}
}