JAL-1807 Bob's first commit -- Applet loaded; needs image

[jalview.git] / src / javajs / util / CompoundDocDirEntry.java

diff --git a/src/javajs/util/CompoundDocDirEntry.java b/src/javajs/util/CompoundDocDirEntry.java
new file mode 100644 (file)
index 0000000..3eaab5e
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+++ b/src/javajs/util/CompoundDocDirEntry.java
@@ -0,0 +1,93 @@
+/* $RCSfile$
+ * $Author$
+ * $Date$
+ * $Revision$
+ *
+ * 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 CompoundDocDirEntry {
+
+  private final CompoundDocument cd;
+
+  /**
+   * @param compoundDocument
+   */
+  CompoundDocDirEntry(CompoundDocument compoundDocument) {
+    cd = compoundDocument;
+  }
+
+  // 128 bytes
+  //offset 0:
+  byte[] unicodeName64 = new byte[64];
+  short nBytesUnicodeName; // twice the ascii length, including terminating 0
+  byte entryType; // 0 empty; 1 storage; 2 stream; 5 root storage
+  //byte entryColor; // 0 red or 1 black
+  //int DIDchildLeft;
+  //int DIDchildRight;
+  //int DIDstorageRoot;
+  byte[] uniqueID16 = new byte[16];
+  byte[] userflags4 = new byte[4];
+  //long timeStamp1;
+  //long timeStamp2;
+  //offset 116:
+  int SIDfirstSector; // either SAT or SSAT
+  int lenStream;
+  byte[] unused = new byte[8];
+
+  // derived:
+
+  String entryName;
+  boolean isStandard;
+  boolean isEmpty;
+
+  final boolean readData() {
+    try {
+      cd.readByteArray(unicodeName64, 0, 64);
+      nBytesUnicodeName = cd.readShort();
+      entryType = cd.readByte();
+      /*entryColor = */cd.readByte();
+      /*DIDchildLeft = */cd.readInt();
+      /*DIDchildRight = */cd.readInt();
+      /*DIDstorageRoot = */cd.readInt();
+      cd.readByteArray(uniqueID16, 0, 16);
+      cd.readByteArray(userflags4, 0, 4);
+      /*timeStamp1 = */      cd.readByteArray(unused, 0, 8);//cd.readLong();
+      /*timeStamp2 = */      cd.readByteArray(unused, 0, 8);//cd.readLong();
+      //offset 116:
+      SIDfirstSector = cd.readInt();
+      lenStream = cd.readInt();
+      cd.readByteArray(unused, 0, 4);
+    } catch (Exception e) {
+      System.out.println(e.toString());
+      return false;
+    }
+    entryName = "";
+    for (int i = 0; i < nBytesUnicodeName - 2; i += 2)
+      entryName += (char) unicodeName64[i];
+    isStandard = (entryType == 5 || lenStream >= cd.header.minBytesStandardStream);
+    isEmpty = (entryType == 0 || lenStream <= 0);
+    //System.out.println(entryName + " type " + entryType);
+    return true;
+  }
+}
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