001    /**
002     * ===========================================
003     * LibFonts : a free Java font reading library
004     * ===========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/libfonts/
007     *
008     * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * $Id: LEByteAccessUtilities.java 3523 2007-10-16 11:03:09Z tmorgner $
027     * ------------
028     * (C) Copyright 2006-2007, by Pentaho Corporation.
029     */
030    
031    package org.jfree.fonts;
032    
033    /**
034     * Reads byte-data using a Little-Endian access schema. Little-Endian is used for Type1 fonts.
035     *
036     * @author Thomas Morgner
037     */
038    public class LEByteAccessUtilities
039    {
040      private LEByteAccessUtilities()
041      {
042      }
043    
044      public static int readUShort (final byte[] data, final int pos)
045      {
046        return ((data[pos + 1] & 0xff) << 8) | (data[pos] & 0xff);
047      }
048    
049      public static long readULong (final byte[] data, final int pos)
050      {
051        final int c1 = (data[pos] & 0xff);
052        final int c2 = (data[pos + 1] & 0xff);
053        final int c3 = (data[pos + 2] & 0xff);
054        final int c4 = (data[pos + 3] & 0xff);
055    
056        long retval = ((long) c4 << 24);
057        retval |= (long)c3 << 16;
058        retval |= (long)c2 << 8;
059        retval |= (long)c1;
060        return retval;
061      }
062    
063      public static long readLongDateTime (final byte[] data, final int pos)
064      {
065        final int c1 = (data[pos] & 0xff);
066        final int c2 = (data[pos + 1] & 0xff);
067        final int c3 = (data[pos + 2] & 0xff);
068        final int c4 = (data[pos + 3] & 0xff);
069        final int c5 = (data[pos + 4] & 0xff);
070        final int c6 = (data[pos + 5] & 0xff);
071        final int c7 = (data[pos + 6] & 0xff);
072        final int c8 = (data[pos + 7] & 0xff);
073    
074        long retval = ((long) c8 << 56);
075        retval |= (long)c7 << 48;
076        retval |= (long)c6 << 40;
077        retval |= (long)c5 << 32;
078        retval |= (long)c4 << 24;
079        retval |= (long)c3 << 16;
080        retval |= (long)c2 << 8;
081        retval |= (long)c1;
082        return retval;
083      }
084    
085      public static short readShort (final byte[] data, final int pos)
086      {
087        return (short) ((data[pos + 1] & 0xff) << 8 | (data[pos] & 0xff));
088      }
089    
090      public static int readLong (final byte[] data, final int pos)
091      {
092        int retval = 0;
093        retval |= (long)(data[pos + 3] & 0xff) << 24;
094        retval |= (long)(data[pos + 2] & 0xff) << 16;
095        retval |= (long)(data[pos + 1] & 0xff) << 8;
096        retval |= (long)(data[pos ] & 0xff);
097        return retval;
098      }
099    
100    }