//主要用到了java io 的基本知识 和 正则表达式

package com.su;

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.OutputStreamWriter;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import android.widget.Toast;

public class LrcManager {

public void save(String content,String filePath) {//保存lrc

filePath = "/sdcard/lrc1.txt";

if(!filePath.endsWith(".txt") && !filePath.endsWith(".log"))

filePath += ".txt";

File file = new File(filePath);

try {

OutputStream outstream = new FileOutputStream(file);

OutputStreamWriter out = new OutputStreamWriter(outstream);

out.write(content);

out.close();

} catch (java.io.IOException e) {

e.printStackTrace();

}

}

public String read(){//读取lrc

String path = "/sdcard/lrc1.txt";

String content="";

//打开文件

File file = new File(path);

//如果path是传递过来的参数，可以做一个非目录的判断

if (file.isDirectory()){

//Toast.makeText(TestLrcActivity.this, "没有指定文本文件！", 1000).show();

}

else{

try {

InputStream instream = new FileInputStream(file);

if (instream != null) {

InputStreamReader inputreader = new InputStreamReader(instream);

BufferedReader buffreader = new BufferedReader(inputreader);

String line;

//分行读取

while (( line = buffreader.readLine()) != null) {

content += line + "\n";

}

instream.close();

}

}

catch (java.io.FileNotFoundException e) {

//Toast.makeText(TestLrcActivity.this, "文件不存在", Toast.LENGTH_SHORT).show();

} catch (IOException e) {

e.printStackTrace();

}

}

return content;

}

public void deallrc(){//lrc to txt

Pattern pattern = Pattern.compile("\\[\\d{2}:\\d{2}.\\d{2}\\]");//Pattern+Matcher类构成正则表达式

File f1 = new File("/sdcard/lrc1.txt");

File f2 = new File("/sdcard/lrc2.txt");

BufferedReader reader1 = null;

FileWriter write1 = null;

try {

reader1 = new BufferedReader(new FileReader(f1));

write1 = new FileWriter(f2);

String line = null;

while ((line = reader1.readLine()) != null) {

for (int i = 0; i < line.length(); i++) {

Matcher m=pattern.matcher(line);

line = m.replaceAll("");

line = line.replaceAll("\\[offset:\\d{3}\\]","");//正则表达式使用replaceAll()方法

line = line.replace("ti","歌名");//替换字符串

line = line.replace("ar","歌手");

line = line.replace("al","专辑");

line = line.replace("by","Lrc歌词作者");

//line = line.replace("]","");

line = line.replace("url","歌词来源");

line = line.replace("null","");

}

if (line!="\n"&&line!=null&&line!=""&&line!="null") {

System.out.println(line);

write1.write(line+"\n");

}

}

} catch (IOException e) {

System.out.println("出现异常");

} finally {

try {

reader1.close();

write1.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}