ExtractID3TagFromFile.java

package org.jaudiotagger.test;

import org.jaudiotagger.audio.mp3.MP3File;

import java.io.File;

/**
 * Simple class that will attempt to recusively read all files within a directory, flags
 * errors that occur.
 */
public class ExtractID3TagFromFile {

    public static void main(final String[] args) {
        ExtractID3TagFromFile test = new ExtractID3TagFromFile();

        if (args.length != 2) {
            System.err.println("usage ExtractID3TagFromFile Filename FilenameOut");
            System.err.println("      You must enter the file to extract the tag from and where to extract to");
            System.exit(1);
        }

        File file = new File(args[0]);
        File outFile = new File(args[1]);
        if (!file.isFile()) {
            System.err.println("usage ExtractID3TagFromFile Filename FilenameOut");
            System.err.println("      File " + args[0] + " could not be found");
            System.exit(1);
        }

        try {
            final MP3File tmpMP3 = new MP3File(file);
            tmpMP3.extractID3v2TagDataIntoFile(outFile);
        } catch (Exception e) {
            System.err.println("Unable to extract tag");
            System.exit(1);
        }
    }

    final class MP3FileFilter extends javax.swing.filechooser.FileFilter implements java.io.FileFilter {

        /**
         * allows Directories
         */
        private final boolean allowDirectories;

        /**
         * Create a default MP3FileFilter.  The allowDirectories field will
         * default to false.
         */
        public MP3FileFilter() {
            this(false);
        }

        /**
         * Create an MP3FileFilter.  If allowDirectories is true, then this filter
         * will accept directories as well as mp3 files.  If it is false then
         * only mp3 files will be accepted.
         *
         * @param allowDirectories whether or not to accept directories
         */
        private MP3FileFilter(final boolean allowDirectories) {
            this.allowDirectories = allowDirectories;
        }

        /**
         * Determines whether or not the file is an mp3 file.  If the file is
         * a directory, whether or not is accepted depends upon the
         * allowDirectories flag passed to the constructor.
         *
         * @param file the file to test
         * @return true if this file or directory should be accepted
         */
        public final boolean accept(final File file) {
            return (((file.getName()).toLowerCase().endsWith(".mp3")) || (file.isDirectory() && (this.allowDirectories)));
        }

        /**
         * Returns the Name of the Filter for use in the Chooser Dialog
         *
         * @return The Description of the Filter
         */
        public final String getDescription() {
            return ".mp3 Files";
        }
    }

    public static final String IDENT = "$Id: ExtractID3TagFromFile.java 836 2009-11-12 15:44:07Z paultaylor $";

}