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Commit a095992

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author
Mitch Talmadge
committed
Apple based emoji fonts (with sbix tables) are now extracted VERY
quickly, with full unicode name support. All other fonts extract the same way.
1 parent e555b3e commit a095992

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6 files changed

+672
-48
lines changed

6 files changed

+672
-48
lines changed

‎Emoji Extractor/src/me/MitchT/EmojiExtractor/ExtractionManager.java‎

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package me.MitchT.EmojiExtractor;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.List;
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import me.MitchT.EmojiExtractor.Extractors.AppleExtractionThread;
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import me.MitchT.EmojiExtractor.Extractors.ExtractionThread;
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import me.MitchT.EmojiExtractor.Extractors.StandardExtractionThread;
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import me.MitchT.EmojiExtractor.GUI.MainFrame;
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import me.MitchT.EmojiExtractor.GUI.ProgressPanel;
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public class ExtractionManager
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{
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private File font;
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private MainFrame mainFrame;
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private ExtractionThread extractionThread;
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public ExtractionManager(File font, MainFrame mainFrame, ProgressPanel progressPanel)
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{
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this.font = font;
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this.mainFrame = mainFrame;
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//Determine which Extraction Method to use
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try
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{
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RandomAccessFile inputStream = new RandomAccessFile(font, "r");
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byte[] b = new byte[4];
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inputStream.readFully(b);
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if(!ExtractionUtilites.compareBytes(b, (byte)0x00,(byte)0x01,(byte)0x00,(byte)0x00))
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{
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showMessagePanel("Selected Font is not a valid True Type Font! (*.ttf)");
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inputStream.close();
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return;
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}
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b = new byte[2];
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inputStream.readFully(b);
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short numTables = ExtractionUtilites.getShortFromBytes(b);
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List<String> tableNames = Arrays.asList(new String[numTables]);
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List<Integer> tableOffsets = Arrays.asList(new Integer[numTables]);
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List<Integer> tableLengths = Arrays.asList(new Integer[numTables]);
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inputStream.seek(12);
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b = new byte[4];
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for(int i = 0; i < numTables; i++)
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{
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inputStream.readFully(b);
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tableNames.set(i, ExtractionUtilites.getStringFromBytes(b));
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inputStream.skipBytes(4);
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inputStream.readFully(b);
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tableOffsets.set(i, ExtractionUtilites.getIntFromBytes(b));
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inputStream.readFully(b);
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tableLengths.set(i, ExtractionUtilites.getIntFromBytes(b));
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}
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if(tableNames.contains("sbix"))
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extractionThread = new AppleExtractionThread(font, tableNames, tableOffsets, tableLengths, this, progressPanel);
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else
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extractionThread = new StandardExtractionThread(font, this, progressPanel);
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inputStream.close();
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}
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catch(FileNotFoundException e)
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{
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e.printStackTrace();
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}
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catch(IOException e)
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{
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e.printStackTrace();
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}
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}
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public void startExtraction()
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{
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extractionThread.start();
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}
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public void stopExtraction()
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{
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if(extractionThread != null && extractionThread.isAlive())
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{
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extractionThread.endExtraction();
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}
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}
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public void showMessagePanel(String message)
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{
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this.mainFrame.showMessagePanel(message);
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}
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}

‎Emoji Extractor/src/me/MitchT/EmojiExtractor/ExtractionUtilites.java‎

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package me.MitchT.EmojiExtractor;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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public class ExtractionUtilites
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{
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public static short getShortFromBytes(byte[] bytes)
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{
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return ByteBuffer.wrap(bytes).getShort();
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}
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public static int getIntFromBytes(byte[] bytes)
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{
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return ByteBuffer.wrap(bytes).getInt();
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}
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public static String getStringFromBytes(byte[] bytes)
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{
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return new String(bytes);
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}
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public static boolean compareBytes(byte[] bytes, byte ... compare)
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{
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return Arrays.equals(bytes, compare);
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}
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}

‎Emoji Extractor/src/me/MitchT/EmojiExtractor/Extractors/AppleExtractionThread.java‎

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package me.MitchT.EmojiExtractor.Extractors;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.RandomAccessFile;
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import java.util.ArrayList;
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import java.util.List;
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import me.MitchT.EmojiExtractor.EmojiExtractor;
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import me.MitchT.EmojiExtractor.ExtractionManager;
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import me.MitchT.EmojiExtractor.ExtractionUtilites;
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import me.MitchT.EmojiExtractor.GUI.ProgressPanel;
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public class AppleExtractionThread extends ExtractionThread
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{
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private static final File emojisDir = new File(EmojiExtractor.getRootDirectory() + "/ExtractedEmojis");
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private long currentBytePos = 0;
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private List<String> tableNames;
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private List<Integer> tableOffsets;
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private List<Integer> tableLengths;
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private short numGlyphs = 0;
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private String[] glyphNames;
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private ExtractionManager extractionManager;
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private ProgressPanel progressPanel;
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private long startTime = 0;
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private long currTime = 0;
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public AppleExtractionThread(File font, List<String> tableNames, List<Integer> tableOffsets, List<Integer> tableLengths, ExtractionManager extractionManager, ProgressPanel progressPanel)
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{
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super(font);
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this.tableNames = tableNames;
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this.tableOffsets = tableOffsets;
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this.tableLengths = tableLengths;
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this.extractionManager = extractionManager;
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this.progressPanel = progressPanel;
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}
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@Override
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public void run()
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{
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try
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{
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RandomAccessFile inputStream = new RandomAccessFile(font, "r");
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if(!emojisDir.exists())
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{
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emojisDir.mkdir();
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}
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startTime = System.currentTimeMillis();
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//Get numGlyphs, ordinal numbers, and glyphNames from post table
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int postIndex = tableNames.indexOf("post");
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if(postIndex > -1)
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{
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int offset = tableOffsets.get(postIndex);
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int length = tableLengths.get(postIndex);
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inputStream.seek(offset);
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b = new byte[4];
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inputStream.readFully(b);
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if(!ExtractionUtilites.compareBytes(b, (byte) 0x00, (byte) 0x02, (byte) 0x00, (byte) 0x00))
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{
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extractionManager.showMessagePanel("Invalid 'post' table format! Contact developer for help.");
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inputStream.close();
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return;
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}
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inputStream.skipBytes(28);
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b = new byte[2];
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inputStream.readFully(b);
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numGlyphs = ExtractionUtilites.getShortFromBytes(b);
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short[] ordinalNumbers = new short[numGlyphs];
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short numNewGlyphs = 0;
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for(int i = 0; i < numGlyphs; i++)
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{
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inputStream.readFully(b);
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ordinalNumbers[i] = ExtractionUtilites.getShortFromBytes(b);
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if(ordinalNumbers[i] > 257)
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numNewGlyphs++;
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}
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String[] extraNames = new String[numNewGlyphs];
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for(int i = 0; i < numNewGlyphs; i++)
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{
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short nameLen = (short) inputStream.read();
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b = new byte[nameLen];
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inputStream.readFully(b);
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extraNames[i] = ExtractionUtilites.getStringFromBytes(b);
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}
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//Build list of names for GlyphIDs
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glyphNames = new String[numGlyphs];
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for(int i = 0; i < numGlyphs; i++)
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{
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if(ordinalNumbers[i] <= 257)
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{
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glyphNames[i] = standardOrderNames[ordinalNumbers[i]];
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}
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else
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{
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glyphNames[i] = extraNames[ordinalNumbers[i] - 258];
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}
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}
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}
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else
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{
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extractionManager.showMessagePanel("Could not find 'post' table! Contact developer for help.");
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inputStream.close();
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return;
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}
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//Get number of strikes, and scan for PNG files.
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int sbixIndex = tableNames.indexOf("sbix");
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if(sbixIndex > -1)
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{
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int offset = tableOffsets.get(sbixIndex);
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int length = tableLengths.get(sbixIndex);
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inputStream.seek(offset);
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inputStream.skipBytes(4);
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b = new byte[4];
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inputStream.readFully(b);
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int numStrikes = ExtractionUtilites.getIntFromBytes(b);
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int[] strikeOffsets = new int[numStrikes];
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for(int i = 0; i < numStrikes; i++)
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{
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inputStream.readFully(b);
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strikeOffsets[i] = ExtractionUtilites.getIntFromBytes(b);
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}
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//TODO: Figure out how to convert rgbl to png.. for now, use last strike..
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inputStream.seek(offset+strikeOffsets[strikeOffsets.length-1]);
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inputStream.skipBytes(4);
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int[] glyphOffsets = new int[numGlyphs];
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int[] glyphLengths = new int[numGlyphs];
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b = new byte[4];
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for(int i = 0; i < numGlyphs; i++)
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{
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inputStream.readFully(b);
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glyphOffsets[i] = ExtractionUtilites.getIntFromBytes(b);
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}
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for(int i = 0; i < numGlyphs; i++)
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{
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if(i+1 == numGlyphs)
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glyphLengths[i] = length - strikeOffsets[strikeOffsets.length-1] - glyphOffsets[i];
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else
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glyphLengths[i] = glyphOffsets[i+1] - glyphOffsets[i];
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}
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inputStream.seek(offset+strikeOffsets[strikeOffsets.length-1]);
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inputStream.skipBytes(glyphOffsets[0]);
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for(int i = 0; i < numGlyphs; i++)
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{
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if(glyphLengths[i] == 0)
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continue;
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else
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{
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inputStream.skipBytes(4);
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b = new byte[4];
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inputStream.readFully(b);
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if(ExtractionUtilites.getStringFromBytes(b).equals("png "))
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{
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System.out.println("Extracting Glyph #" + i + " to '" + glyphNames[i] + ".png'");
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FileOutputStream outputStream = new FileOutputStream(new File(emojisDir, glyphNames[i] + ".png"));
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b = new byte[glyphLengths[i] - 8];
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inputStream.readFully(b);
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outputStream.write(b);
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outputStream.close();
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}
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}
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}
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}
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else
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{
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extractionManager.showMessagePanel("Could not find 'sbix' table! Contact developer for help.");
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inputStream.close();
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return;
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}
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inputStream.close();
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System.out.println("No more Emojis to extract! All done! :)");
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extractionManager.showMessagePanel("No more Emojis to extract! All done! :)");
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return;
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}
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catch(FileNotFoundException e)
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{
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System.out.println(this.font.getName() + " not found!");
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extractionManager.showMessagePanel(this.font.getName() + " not found!");
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}
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catch(IOException e)
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{
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e.printStackTrace();
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}
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}
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private void updateProgress()
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{
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this.currTime = System.currentTimeMillis();
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progressPanel.setProgress(currentBytePos, this.font.length());
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progressPanel.setTimeRemaining(currentBytePos, this.font.length(), currTime, startTime);
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}
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}

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