+/* $RCSfile$
+ * $Author$
+ * $Date$
+ * $Revision$
+ *
+ * Some portions of this file have been modified by Robert Hanson hansonr.at.stolaf.edu 2012-2017
+ * for use in SwingJS via transpilation into JavaScript using Java2Script.
+ *
+ * Copyright (C) 2011 The Jmol Development Team
+ *
+ * Contact: jmol-developers@lists.sf.net
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+package javajs.util;
+
+
+class CompoundDocHeader {
+
+ /**
+ *
+ */
+ private final CompoundDocument cd;
+
+ /**
+ * @param compoundDocument
+ */
+ CompoundDocHeader(CompoundDocument compoundDocument) {
+ cd = compoundDocument;
+ }
+
+ //512 bytes
+ //offset 0:
+ byte[] magicNumbers = new byte[8]; // D0CF11E0A1B11AE1
+ byte[] uniqueID16 = new byte[16];
+ byte revNumber; // 3E = 62
+ //byte unusedb1;
+ byte verNumber; // 3
+ //byte unusedb2;
+ //short byteOrder; // -2 littleEndian
+ short sectorPower; // 2^sectorPower = sector size; 512 = 2^9
+ short shortSectorPower; // 2^shortSectorPower = short sector size; 64 = 2^6
+ byte[] unused = new byte[10];
+ int nSATsectors; // number of sectors for sector allocation table
+ int SID_DIR_start; // sector identifier of start of directory sector
+ //offset 56:
+ int minBytesStandardStream; // less than this (and not DIR) will be "short"
+ int SID_SSAT_start; // start of short sector allocation table (SSAT)
+ int nSSATsectors; // number of sectors allocated to SSAT
+ int SID_MSAT_next; // pointer to next master sector allocation table sector
+ int nAdditionalMATsectors; // number of sectors allocated to more MSAT sectors
+ //offset 76; 436 bytes:
+ int[] MSAT0 = new int[109]; // beginning of master allocation table
+
+ /*
+ * Sector 0 is first sector AFTER this header
+ *
+ * If sectorPower = 9, then this allows for 109 PAGES
+ * of sector allocation tables, with 127 pointers per
+ * page (plus 1 pointer to the next SAT page), each
+ * pointing to a sector of 512 bytes. Thus, with no additional
+ * MSAT pages, the header allows for 109*128*512 = 7.1 Mb file
+ *
+ */
+
+ final boolean readData() {
+ try {
+ cd.readByteArray(magicNumbers, 0, 8);
+ if ((magicNumbers[0] & 0xFF) != 0xD0 || (magicNumbers[1] & 0xFF) != 0xCF
+ || (magicNumbers[2] & 0xFF) != 0x11 || (magicNumbers[3] & 0xFF) != 0xE0
+ || (magicNumbers[4] & 0xFF) != 0xA1 || (magicNumbers[5] & 0xFF) != 0xB1
+ || (magicNumbers[6] & 0xFF) != 0x1A || (magicNumbers[7] & 0xFF) != 0xE1)
+ return false;
+ cd.readByteArray(uniqueID16, 0, 16);
+ revNumber = cd.readByte();
+ cd.readByte();
+ verNumber = cd.readByte();
+ cd.readByte();
+ byte b1 = cd.readByte();
+ byte b2 = cd.readByte();
+ cd.isBigEndian = (b1 == -1 && b2 == -2);
+ sectorPower = cd.readShort();
+ shortSectorPower = cd.readShort();
+ cd.readByteArray(unused, 0, 10);
+ nSATsectors = cd.readInt();
+ SID_DIR_start = cd.readInt();
+ cd.readByteArray(unused, 0, 4);
+ minBytesStandardStream = cd.readInt();
+ SID_SSAT_start = cd.readInt();
+ nSSATsectors = cd.readInt();
+ SID_MSAT_next = cd.readInt();
+ nAdditionalMATsectors = cd.readInt();
+ for (int i = 0; i < 109; i++)
+ MSAT0[i] = cd.readInt();
+ } catch (Exception e) {
+ System.out.println(e.toString());
+ return false;
+ }
+ return true;
+ }
+}
\ No newline at end of file