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java代码讲解器 读懂java代码( 二 )

IT技术代码


package com.routon.utils;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import android.util.Log;
/**
* parse lrc file tool
* eg：
* utilLrc lrc = new utilLrc("/sdcard/test.lrc");
* get song name : String title = lrc.getTitle();
* get performer name : String artist = lrc.getArtist();
* get album name: String album = lrc.getAlbum();
* get lrcmaker name: String lrcMaker = lrc.getLrcMaker();
* get song list: ListStatement list = lrc.getLrcList();
*
* @author xuweilin
*
*/
public class utilLrc {
private static String TAG = "utilLrc";
public class Statement {
private double time= 0.0;//time, 0.01s
private String lyric = "";//song word
/*
* get time
*/
public double getTime() {
return time;
}
/*
* set time
*/
public void setTime(double time) {
this.time = time;
}
/*
* set time.format:mm:ss.ms
*/
public void setTime(String time) {
String str[] = time.split(":|\\.");
this.time = Integer.parseInt(str[0])*60+Integer.parseInt(str[1])+Integer.parseInt(str[2])*0.01;
}
/*
* get lrc word
*/
public String getLyric() {
return lyric;
}
/*
* set lrc word
*/
public void setLyric(String lyric) {
this.lyric = lyric;
}
}
private BufferedReader bufferReader = null;
private String title = "";
private String artist = "";
private String album = "";
private String lrcMaker = "";
private ListStatement statements = new ArrayListStatement();
/*
*
* fileName
*/
public utilLrc(String fileName) throws IOException{
FileInputStream file = new FileInputStream(fileName);
bufferReader = new BufferedReader(new InputStreamReader(file, "utf-8"));
readData();
}
/*
* read the file
*/
private void readData() throws IOException{
statements.clear();
String strLine;
while(null != (strLine = bufferReader.readLine()))
{
if("".equals(strLine.trim()))
{
continue;
}
if(null == title || "".equals(title.trim()))
{
Pattern pattern = Pattern.compile("\\[ti:(.+?)\\]");
Matcher matcher = pattern.matcher(strLine);
if(matcher.find())
{
title=matcher.group(1);
continue;
}
}
if(null == artist || "".equals(artist.trim()))
{
Pattern pattern = Pattern.compile("\\[ar:(.+?)\\]");
Matcher matcher = pattern.matcher(strLine);
if(matcher.find())
{
artist=matcher.group(1);
continue;
}
}
if(null == album || "".equals(album.trim()))
{
Pattern pattern = Pattern.compile("\\[al:(.+?)\\]");
Matcher matcher = pattern.matcher(strLine);
if(matcher.find())
{
album=matcher.group(1);
continue;
}
}
if(null == lrcMaker || "".equals(lrcMaker.trim()))
{
Pattern pattern = Pattern.compile("\\[by:(.+?)\\]");
Matcher matcher = pattern.matcher(strLine);
if(matcher.find())
{
lrcMaker=matcher.group(1);
continue;
}
}
int timeNum=0;
String str[] = strLine.split("\\]");
for(int i=0; istr.length; ++i)
{
String str2[] = str[i].split("\\[");
str[i] = str2[str2.length-1];
if(isTime(str[i])){
++timeNum;
}
}
for(int i=0; itimeNum;++i)
{
Statement sm = new Statement();
sm.setTime(str[i]);
if(timeNumstr.length)
{
sm.setLyric(str[str.length-1]);

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