changetime.java

修改SRC文件中时间的程序

import java.io.*;
//import java.text.*;
import java.util.*;

public class ChangeTime
{
	private int delay=0;		//超期或推后时间（毫秒）
	private String fileName;	//原文件名
	private String outFileName;	//输出文件名（可选）

	public static void main(String args[]){
		if(args.length<2){
			System.err.println("Usage: java ChangeTime <file> <delay> [<outfile>]");
			System.exit(1);
		}
		
		int delay=0;
		try{
			delay=Integer.parseInt(args[1]);
		}
		catch(NumberFormatException e)
		{
			System.err.println("Invalid delay time, Number format");
			System.exit(1);
		}

		ChangeTime chnTime=null;

		if(args.length==3){
			chnTime=new ChangeTime(args[0],delay,args[2]);
		}
		else
			chnTime=new ChangeTime(args[0],delay,args[0]);
		chnTime.displayText();
		
	}
//Contructor
	public ChangeTime(String fileName,int delay,String outFileName){
		this.fileName=fileName;
		this.delay=delay;
		this.outFileName=outFileName;
	}
//转换过程
	public void displayText() {
//		FileInputStream io=null;
		BufferedReader bio=null;
//		ObjectOutputStream oout=null;
		BufferedWriter bout=null;
		String line;
		Vector vt=new Vector();
		//读字幕数据
		try{
//		io=new FileInputStream(fileName);
		bio=new BufferedReader(new FileReader(fileName));
		}
		catch(FileNotFoundException e){
			System.err.println("File not found");
			System.exit(1);
		}

		try{
		while((line=bio.readLine())!=null){
			int no=Integer.parseInt(line);
			String timeZone=bio.readLine();
			String text="";
			while((line=bio.readLine()).length()!=0){
				text+=line+"\n";
			}
//			System.out.println(text);
			FilmFrame ff=new FilmFrame(no,timeZone,text);
			vt.add(ff);
		}
		}
		catch(IOException e){
			System.err.println("File read error");
			System.exit(1);
		}
		//写字幕数据
//		bout=new BufferedWriter(new FileWriter(fileName));
		try{
//			File file=new File(outFileName);
			bout=new BufferedWriter(new FileWriter(outFileName));
		}
		catch(IOException e){
			System.err.println("File open error");
			System.exit(1);
		}

		try{
		for (int i=0;i<vt.size() ;i++ )
		{
			FilmFrame ff=(FilmFrame)vt.elementAt(i);
			delay=ff.changeTime(delay);
			String str=ff.toString();
			bout.write(str,0,str.length());
			bout.flush();
//			bout.newLine();
//			System.out.println(ff.getTimeZone());
		}
		}
		catch(IOException e){
			System.err.println("File write error");
			System.exit(1);
		}
	}

//字幕类
	class FilmFrame implements Serializable
	{
		private int beginTime;
		private int endTime;
		private int seqence;
		private String text;
//Consturctor
		public FilmFrame(int seqence,int beginTime,int endTime,String text){
			this.seqence=seqence;
			this.beginTime=beginTime;
			this.endTime=endTime;
			this.text=text;
		}
		public FilmFrame(int seqence,String timeZone,String text){
			this.seqence=seqence;
			this.beginTime=toTime(timeZone.substring(0,12));
			this.endTime=toTime(timeZone.substring(17));
			this.text=text;
		}
//获得序号
		public int getSequence(){
			return seqence;
		}
//获得字幕文本
		public String getText(){
			return text;
		}
//修改时间
		public int changeTime(int delay){
			beginTime+=delay;
			endTime+=delay;
			if(beginTime<0){
				delay=delay-beginTime;
				endTime=endTime-beginTime;
				beginTime=0;
			}
			return delay;
		}
//解析时间		
		private int toTime(String timeZone){
			int hour=Integer.parseInt(timeZone.substring(0,2));
			int minute=Integer.parseInt(timeZone.substring(3,5));
			int second=Integer.parseInt(timeZone.substring(6,8));
			int msec=Integer.parseInt(timeZone.substring(9));
			return (((hour*60)+minute)*60+second)*1000+msec;
		}
//把时间转换为字幕时间段
		private String toTimeZone(int time){
			int hour;
			int minute;
			int second;
			int msec;
			String result="";

			hour=(int)Math.floor(time/3600000);
			minute=(int)Math.floor((time % 3600000)/60000);
			second=(int)Math.floor(((time % 3600000) %60000 )/1000);
			msec=time-hour*3600000-minute*60000-second*1000;
			
			result+=((hour>=10)?(""+hour):("0"+hour))+":";
			result+=((minute>=10)?(""+minute):("0"+minute))+":";
			result+=(second>=10)?(""+second):("0"+second);
			result+=","+((msec>=100)?(""+msec):((msec>=10)?("0"+msec):("00"+msec)));

			return result;

		}
//获得字幕时间段
		public String getTimeZone(){
			return toTimeZone(beginTime)+" --> "+toTimeZone(endTime);
		}
//输出字幕
		public String toString(){
			return seqence+"\n"+
				getTimeZone()+"\n"+
				text+"\n";
		}

	}
}