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MergeID3AndMP3Files.javaAPI DocJaudiotagger 2.0.48114Thu Apr 28 14:55:18 BST 2011org.jaudiotagger.test

MergeID3AndMP3Files

public class MergeID3AndMP3Files extends Object
Simple class that will attempt to recusively read all files within a directory ending in .mp3 (but only actually expected to contain id3 tags), merge them with a given mp3 and write them to the provided output folder (which must already exist)

Fields Summary
private static int
count
private static int
failed
Constructors Summary
Methods Summary
private static booleanappend(java.io.File fromFile1, java.io.File fromFile2, java.io.File toFile)

        try
        {
            FileInputStream in = new FileInputStream(fromFile1);
            FileInputStream in2 = new FileInputStream(fromFile2);

            toFile.getParentFile().mkdirs();
            FileOutputStream out = new FileOutputStream(toFile);
            BufferedInputStream inBuffer = new BufferedInputStream(in);
            BufferedInputStream inBuffer2 = new BufferedInputStream(in2);
            BufferedOutputStream outBuffer = new BufferedOutputStream(out);

            int theByte;

            while ((theByte = inBuffer.read()) > -1)
            {
                outBuffer.write(theByte);
            }

            while ((theByte = inBuffer2.read()) > -1)
            {
                outBuffer.write(theByte);
            }

            outBuffer.close();
            inBuffer.close();
            inBuffer2.close();
            out.close();
            in.close();
            in2.close();

            // cleanupif files are not the same length
            if ((fromFile1.length() + fromFile2.length()) != toFile.length())
            {
                toFile.delete();

                return false;
            }

            return true;
        }
        catch (IOException e)
        {
            e.printStackTrace();
            return false;
        }
public static java.io.FilecopyAudioToTmp(java.io.File toDir, java.io.File tagFile, java.io.File mp3File)

    

            
    
        File outputFile = new File(toDir.getPath(), tagFile.getName());
        boolean result = append(tagFile, mp3File, outputFile);
        return outputFile;
public static voidmain(java.lang.String[] args)

        MergeID3AndMP3Files test = new MergeID3AndMP3Files();

        if (args.length == 0)
        {
            System.err.println("usage MergeID3AndMP3Files FromDir ToDir mp3File");
            System.err.println("      You must enter the from dir,outputdir and the mp3file to append");
            System.exit(1);
        }
        else if (args.length != 3)
        {
            System.err.println("usage MergeID3AndMP3Files FromDir ToDir mp3File");
            System.err.println("      Only three parameters accepted");
            System.exit(1);
        }
        File rootDir = new File(args[0]);
        if (!rootDir.isDirectory())
        {
            System.err.println("usage MergeID3AndMP3Files FromDir ToDir mp3File");
            System.err.println("      Directory " + args[0] + " could not be found");
            System.exit(1);
        }


        File toDir = new File(args[1]);
        if (!rootDir.isDirectory())
        {
            System.err.println("usage MergeID3AndMP3Files FromDir ToDir mp3File");
            System.err.println("      Directory " + args[1] + " could not be found");
            System.exit(1);
        }

        File mp3File = new File(args[2]);
        if (!mp3File.isFile())
        {
            System.err.println("usage MergeID3AndMP3Files FromDir ToDir mp3File");
            System.err.println("      Mp3File " + args[2] + " could not be found");
            System.exit(1);
        }

        Date start = new Date();
        System.out.println("Started to merge from:" + rootDir.getPath() + " at " + DateFormat.getTimeInstance().format(start));
        test.scanSingleDir(rootDir, toDir, mp3File);
        Date finish = new Date();
        System.out.println("Finished to merge from:" + rootDir.getPath() + DateFormat.getTimeInstance().format(finish));
        System.out.println("Attempted  to merge:" + MergeID3AndMP3Files.count);
        System.out.println("Successful to merge:" + (MergeID3AndMP3Files.count - MergeID3AndMP3Files.failed));
        System.out.println("Failed     to merge:" + MergeID3AndMP3Files.failed);
private voidscanSingleDir(java.io.File fromDir, java.io.File toDir, java.io.File mp3File)
Recursive function to scan directory

param
fromDir
param
toDir
param
mp3File


                    
              
    

        final File[] audioFiles = fromDir.listFiles(new MergeID3AndMP3Files.MP3FileFilter());
        if (audioFiles.length > 0)
        {
            for (File audioFile : audioFiles)
            {
                MergeID3AndMP3Files.count++;

                try
                {
                    copyAudioToTmp(toDir, audioFile, mp3File);
                }
                catch (Throwable t)
                {
                    System.err.println("Unable to merge record:" + MergeID3AndMP3Files.count + ":" + mp3File.getPath());
                    MergeID3AndMP3Files.failed++;
                    t.printStackTrace();
                }
            }
        }

        final File[] audioFileDirs = fromDir.listFiles(new MergeID3AndMP3Files.DirFilter());
        if (audioFileDirs.length > 0)
        {
            for (File audioFileDir : audioFileDirs)
            {
                scanSingleDir(audioFileDir, new File(toDir, audioFileDir.getName()), mp3File);
            }
        }