getpicfromrec.java

读取资源包的工具

//png格式
//0x89 0x50
//0x60 0x82
//MID 格式
//0x4D 0x54
//0x2F 0x00
//gif  格式
// 0x47 0x49 0x00 0x3B
// 0x00 0x3B

import java.io.*;
class GetPicFromRec {
  public GetPicFromRec(){}
  public static final void main(String args[]){
    System.out.println("*****************************************************");
    System.out.println("*                                                   *");
    System.out.println("*                                                   *");
    System.out.println("*                ---daibou007---                    *");
    System.out.println("*                ---2007.6.25---                    *");
    System.out.println("*     ---http://daibou007.blog.163.com/---          *");
    System.out.println("*                                                   *");
    System.out.println("*****************************************************");
    System.out.println("");
    System.out.println("");
    System.out.println("");
    GetPicFromRec thisClass = new GetPicFromRec();
    System.out.println("-------------开始读取文件---------------");
    System.out.println("");
    System.out.println("");
    System.out.println("");
    byte[] tempArray = new byte[102400];
//    tempArray = thisClass.getTheByteFromRec("bom");

       if(args[0]!= null){
           thisClass.ResString = args[0];
           tempArray = thisClass.getTheByteFromRec(args[0]);
         }
         else{
         System.out.println("-------------文件名错误或文件不存在---------------");
         System.exit(0);
    }



    System.out.println("-------------开始导出PNG图片---------------");
    System.out.println("");
    System.out.println("");
    thisClass.picNumber = 0;
    thisClass.setStartAndEnd(tempArray,0);
    thisClass.writePic(tempArray,0);
    if(thisClass.picNumber!= 0){
      System.out.println("PNG图片个数:" + thisClass.picNumber);
    }else{
       System.out.println("没有PNG图片");
    }
    System.out.println("");
    System.out.println("");
    System.out.println("-------------导出PNG图片完毕---------------");


    System.out.println("-------------开始导出MID音乐---------------");
    System.out.println("");
    System.out.println("");
    thisClass.setStartAndEnd(tempArray,1);
    thisClass.writePic(tempArray,1);
    if(thisClass.picNumber!= 0){
      System.out.println("MID音乐个数:" + thisClass.picNumber);
    }else{
      System.out.println("没有MID音乐");
    }
    System.out.println("");
    System.out.println("");
    System.out.println("-------------导出MID音乐完毕---------------");


    System.out.println("-------------开始导出WAV音乐---------------");
    System.out.println("");
    System.out.println("");
    thisClass.getWavStartAndLength(tempArray);
    thisClass.writePic(tempArray,2);
    if(thisClass.picNumber!= 0){
      System.out.println("WAV音乐个数:" + thisClass.picNumber);
    }else{
       System.out.println("没有WAV音乐");
    }
    System.out.println("");
    System.out.println("");
   System.out.println("-------------导出WAV音乐完毕---------------");
   System.out.println("");
   System.out.println("-------------退出程序---------------");
   System.exit(0);


  }
  public byte[] getTheByteFromRec(String stringOfFile){
    InputStream in;
    int  fileLenght;
    byte [] storeFileByByte = new byte [1024];
    try{
        in = new FileInputStream(stringOfFile);
        fileLenght = in.available();
        System.out.println("fileLength:"+fileLenght);
        if(fileLenght > 0)
          storeFileByByte = new byte [fileLenght];
        in.read(storeFileByByte);
        //close the in.
        if(in!=null)in.close();
    }catch(Exception e){
      System.out.println("文件不存在,或者文件名不正确!!!");
      System.exit(0);
    }
    return storeFileByByte;
  }
  //存储起始和末位索引。
  int start[];
  int end[];
  int picNumber;//图片个数
  String ResString;
  byte formatSymbol[][]={
      // png  2  2
      {(byte)0x89, (byte)0x50,(byte)0x4E,(byte)0x42,(byte)0x60, (byte)0x82},
      //mid  3   3
      {(byte)0x4D, (byte)0x54,(byte)0x68,(byte)0xFF,(byte)0x2F, (byte)0x00},
      //wav
      {(byte)0x52, (byte)0x49, (byte)0x46, (byte)0x46},
  };
  String fileName[] ={
      ".png",
      ".mid",
      ".wav"
  };
//int formatIndex 为那个格式索引。
public void setStartAndEnd(byte[] picArray,int formatIndex){
  switch(formatIndex){
    case 0: //png
      for(int i = 0; i< picArray.length - 2;i++){
       if(picArray[i] == formatSymbol[formatIndex][0] && picArray[i + 1] == formatSymbol[formatIndex][1]&& picArray[i + 2] == formatSymbol[formatIndex][2] ){
          picNumber++;
       }
     }
     System.out.println("png图片一个也没有:" + picNumber);
     if( picNumber!=0 ){
    //存储开始点和结束点
     start = new int[picNumber];
     end  = new int [picNumber];
     int ArrayIndex = 0;
     for(int j = 0; j < picArray.length - 2 ; j++){
       if(picArray[j] == formatSymbol[formatIndex][0] && picArray[j + 1] == formatSymbol[formatIndex][1] && picArray[j + 2] == formatSymbol[formatIndex][2]) {//开始
         start[ArrayIndex] = j;
         ArrayIndex++;
       }
       if(picArray[j] == formatSymbol[formatIndex][3]&&picArray[j + 1] == formatSymbol[formatIndex][4]&& picArray[j + 2] == formatSymbol[formatIndex][5] ) {//结束
         end[ArrayIndex - 1] = j + 2;
       }
     }
     }
     break;
     case 1://mid
       for(int i = 0; i< picArray.length - 2;i++){
         if(picArray[i] == formatSymbol[formatIndex][0] && picArray[i + 1] == formatSymbol[formatIndex][1]&& picArray[i + 2] == formatSymbol[formatIndex][2] ){
           picNumber++;
         }
       }
        System.out.println("mid音乐一个也没有:" + picNumber);
       if( picNumber!= 0 ){
         //存储开始点和结束点
         start = new int[picNumber];
         end  = new int [picNumber];
         int ArrayIndex = 0;
         for(int j = 0; j < picArray.length - 2 ; j++){
           if(picArray[j] == formatSymbol[formatIndex][0] && picArray[j + 1] == formatSymbol[formatIndex][1] && picArray[j + 2] == formatSymbol[formatIndex][2]) {//开始
             start[ArrayIndex] = j;
             ArrayIndex++;
           }
           if(picArray[j] == formatSymbol[formatIndex][3]&&picArray[j + 1] == formatSymbol[formatIndex][4]&& picArray[j + 2] == formatSymbol[formatIndex][5] ) {//结束
             end[ArrayIndex - 1] = j + 2;
           }
         }
       }
       break;
     }

}
//输出为图片文件
public void writePic( byte[] arrayPic ,int formatIndex){
  String [] fileNameArray = new String[picNumber];

  for(int i = 0;i < picNumber;i++){
    fileNameArray[i] = ResString + i + fileName[formatIndex];
    System.out.println("导出的资源文件名:"+fileNameArray[i]);
  }
  File [] file = new File[fileNameArray.length];
  for(int i = 0;i < fileNameArray.length;i++){
    file[i] = new File(fileNameArray[i]);
 }

  try{
    FileOutputStream fos ;
      for(int i = 0;i < file.length;i++){
        fos = new FileOutputStream(file[i]);
        if(formatIndex == 2)//wav
          fos.write(arrayPic,WavArray[i],wavLength[i]);
        else//其他
          fos.write(arrayPic,start[i],end[i] - start[i] + 1);
        fos.flush();
        fos.close();

      }
  }catch(Exception e){
  }
 System.out.println("成功导出:" + picNumber + "资源！！");
picNumber = 0;
}


//wav  格式
// 4 字节  RIFF     4 字节 long  长度
  int [] WavArray;
  int [] wavLength;
public void getWavStartAndLength(byte[] picArray){
  picNumber = 0;
  System.out.println("get the wav");
  for(int i = 0; i< picArray.length - 3;i++){
    if(picArray[i] == formatSymbol[2][0] && picArray[i + 1] == formatSymbol[2][1]&& picArray[i + 2] == formatSymbol[2][2]&& picArray[i + 3] == formatSymbol[2][3]  ){
      picNumber++;
    }
  }
  WavArray  = new int[picNumber];
  wavLength = new int[picNumber];
  int ArrayIndex = 0;
 for(int i = 0; i< picArray.length - 3;i++){
   if(picArray[i] == formatSymbol[2][0] && picArray[i + 1] == formatSymbol[2][1]&& picArray[i + 2] == formatSymbol[2][2]&& picArray[i + 3] == formatSymbol[2][3]  ){
     WavArray[ArrayIndex] = i;
     ArrayIndex++;
   }

 }
  System.out.println("起始坐标:"+ WavArray[0]);
 ArrayIndex = 0;
 for(int i = 0; i< picArray.length - 8;i++){
   if(picArray[i] == formatSymbol[2][0] && picArray[i + 1] == formatSymbol[2][1]&& picArray[i + 2] == formatSymbol[2][2]&& picArray[i + 3] == formatSymbol[2][3]  ){

      byte tempArray[]={picArray[i + 7] , picArray[i+6] , picArray[i+5] , picArray[i+4] };
      wavLength[ArrayIndex]= byteArray4ToInt(tempArray) + 8;
      System.out.println("实际单位文件长度:"+ picArray.length);
      System.out.println("计算单位文件长度：" + wavLength[ArrayIndex]);

      ArrayIndex++;

    }
  }
}

 //*************************工具函数************************
  //   取正
  private   int   toInt(byte   b){
    if(b   >=   0)
      return   (int)b;
    else
      return   (int)(b   +   256);
  }
  private   int   byteArray4ToInt(byte[]   byteValue){
    if(byteValue.length   !=   4)
      return   0;

    int   intValue   =   0;
    try{
      intValue   =   toInt(byteValue[0]);
      intValue   =   (intValue   <<   8)   +   toInt(byteValue[1]);
      intValue   =   (intValue   <<   8)   +   toInt(byteValue[2]);
      intValue   =   (intValue   <<   8)   +   toInt(byteValue[3]);
    }
    catch(Exception   e){
      e.printStackTrace();
    }
    return   intValue;
  }
}