INTEGRATION: CWS latex (1.1.2); FILE ADDED
2006/04/06 14:14:45 sus 1.1.2.1: #i24813# Adding LaTeX and BibTeX filter
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Oliver Bolte
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/************************************************************************
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*
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* SVMReader.java
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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* Copyright: 2004 by Urban Widmark
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*
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* All Rights Reserved.
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*
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* Version 0.3.3b (2004-02-26)
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*
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*/
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package writer2latex.office;
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/** This class contains a static method to extract EPS data from an SVM file */
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public final class SVMReader {
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/* Notes on SVM file format:
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Relevant OO 1.1.0 Source Files include:
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tools/source/stream/vcompat.cxx
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vcl/source/gdi/gdimtf.cxx
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vcl/inc/gdimtf.hxx
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vcl/source/gdi/metaact.cxx
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vcl/inc/metaact.hxx
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vcl/source/gdi/mapmod.cxx
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vcl/inc/mapmod.hxx
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tools/source/generic/fract.cxx
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tools/inc/fract.hxx
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tools/source/generic/gen.cxx
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tools/inc/gen.hxx
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VersionCompat (6 bytes)
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version - 2 bytes
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totalsize - 4 bytes
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Point (Pair) (8 bytes)
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X - 4 bytes (long)
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Y - 4 bytes (long)
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Fraction (8 bytes)
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nNumerator - 4 bytes (long)
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nDenominator - 4 bytes (long)
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MapMode (6 + 2 + 8 + 8 + 8 + 1 = 33 bytes)
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VersionCompat
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meUnit - UINT16
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maOrigin - Point
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maScaleX - Fraction
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maScaleY - Fraction
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mbSimple - BOOL (1 byte)
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Size (Pair) (8 bytes)
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width - 4 bytes (long)
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height - 4 bytes (long)
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GfxLink (16 or 57 bytes)
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VersionCompat
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nType - 2 bytes
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nSize - 4 bytes
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nUserId - 4 bytes
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aSize - Size (version >=2)
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aMapMode - MapMode (version >=2)
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MetaEPSAction
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VersionCompat
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maGfxLink - GfxLink
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data[maGfxLink.nSize] - bytes
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maPoint - Point
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maSize - Size
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maSubst - GDIMetaFile (alternative image?)
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SVM file
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"VCLMTF"
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Compat - VersionCompat
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nStmCompressMode - UINT32
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aPrefMapMode - MapMode
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aPrefSize - Size
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count - UINT32
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action[count] - MetaAction
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Example header from an EPS image included in a Writer document:
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00000000: 5643 4c4d 5446 0100 3100 0000 0000 0000 VCLMTF..1.......
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00000010: 0100 1b00 0000 0800 0000 0000 0000 0000 ................
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00000020: 0100 0000 0100 0000 0100 0000 0100 0000 ................
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00000030: 0169 0100 00fd 0000 0001 0000 008f 0001 .i..............
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00000040: 0096 3200 0002 0033 0000 0001 003f 3000 ..2....3.....?0.
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00000050: 0000 0000 0000 0000 0000 0000 0001 001b ................
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00000060: 0000 000a 0000 0000 0000 0000 0001 0000 ................
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00000070: 0001 0000 0001 0000 0001 0000 0001 2521 ..............%!
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5643 4c4d 5446 "VCLMTF" 0
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0100 version 6
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3100 0000 totalsize
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0000 0000 compress 12
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0100 aPrefMapMode.version 16
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1b00 0000 aPrefMapMode.totalsize
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0800 aPrefMapMode.meUnit
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0000 0000 aPrefMapMode.maOrigin
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0000 0000
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0100 0000 aPrefMapMode.maScaleX
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0100 0000
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0100 0000 aPrefMapMode.maScaleY
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0100 0000
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01 aPrefMapMode.mbSimple
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6901 0000 aPrefSize 49
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fd00 0000
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0100 0000 nCount 57
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8f00 type == META_EPS_ACTION 61
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0100 version
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9632 0000 totalsize
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0200 version
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3300 0000 totalsize
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0100 nType
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3f30 0000 nSize 75
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0000 0000 nUserId
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0000 0000 aSize
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0000 0000
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0100
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1b00 0000
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0a00
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0000 0000
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0000 0000
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0100 0000
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0100 0000
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0100 0000
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0100 0000
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01
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Beginning of EPS data:
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2521
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Note that maPoint/maSize/maSubst are all after the EPS file.
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*/
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/** Determine if this SVM contains an EPS document and retrieve start and
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* end positions if so.
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*
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* @param blob byte array containing SVM file
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* @param offlen integer array to retrieve the offset into the SVM file
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* (offlen[0]) and the length (offlen[1]) of the EPS
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* document. If the method returns false, the array
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* will be unchanged.
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*
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* @return returns true if the SVM contains an EPS document
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*/
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public static final boolean readSVM(byte[] blob, int[] offlen) {
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int pos = 57;
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int nCount = getInt(blob, pos);
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pos += 4;
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for (int i=0; i<nCount; i++) {
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int type = getShort(blob, pos);
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pos += 2;
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// We only understand META_EPS_ACTION
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if (type != 143)
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return false;
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pos += 6;
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int version = getShort(blob, pos);
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pos += 6; // version + totalsize
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pos += 2; // nType
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// This is the size of the EPS data.
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int size = getInt(blob, pos);
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pos += 8;
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if (version >= 2)
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pos += 41;
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for (int j=0; j<MIMETypes.EPS_SIG.length; j++)
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if (MIMETypes.EPS_SIG[j] != blob[pos + j])
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return false;
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offlen[0] = pos;
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offlen[1] = size;
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// For now we only understand files where the EPS entry is
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// the first MetaAction
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break;
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}
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return true;
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}
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private static int getInt(byte[] blob, int pos)
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{
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return
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((blob[pos+0] & 0xff) << 0) +
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((blob[pos+1] & 0xff) << 8) +
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((blob[pos+2] & 0xff) << 16) +
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((blob[pos+3] & 0xff) << 24);
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}
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private static int getShort(byte[] blob, int pos)
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{
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return
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((blob[pos+0] & 0xff) << 0) +
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((blob[pos+1] & 0xff) << 8);
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}
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}
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