first commit

hrmsEjb/jxl/write/biff/ExtendedSSTRecord.java

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+package jxl.write.biff;
+
+import jxl.biff.IntegerHelper;
+import jxl.biff.Type;
+import jxl.biff.WritableRecordData;
+
+class ExtendedSSTRecord extends WritableRecordData {
+  private static final int infoRecordSize = 8;
+  
+  private int numberOfStrings;
+  
+  private int[] absoluteStreamPositions;
+  
+  private int[] relativeStreamPositions;
+  
+  private int currentStringIndex = 0;
+  
+  public ExtendedSSTRecord(int newNumberOfStrings) {
+    super(Type.EXTSST);
+    this.numberOfStrings = newNumberOfStrings;
+    int numberOfBuckets = getNumberOfBuckets();
+    this.absoluteStreamPositions = new int[numberOfBuckets];
+    this.relativeStreamPositions = new int[numberOfBuckets];
+    this.currentStringIndex = 0;
+  }
+  
+  public int getNumberOfBuckets() {
+    int numberOfStringsPerBucket = getNumberOfStringsPerBucket();
+    return (numberOfStringsPerBucket != 0) ? ((this.numberOfStrings + numberOfStringsPerBucket - 1) / numberOfStringsPerBucket) : 0;
+  }
+  
+  public int getNumberOfStringsPerBucket() {
+    int bucketLimit = 128;
+    return (this.numberOfStrings + 128 - 1) / 128;
+  }
+  
+  public void addString(int absoluteStreamPosition, int relativeStreamPosition) {
+    this.absoluteStreamPositions[this.currentStringIndex] = absoluteStreamPosition + relativeStreamPosition;
+    this.relativeStreamPositions[this.currentStringIndex] = relativeStreamPosition;
+    this.currentStringIndex++;
+  }
+  
+  public byte[] getData() {
+    int numberOfBuckets = getNumberOfBuckets();
+    byte[] data = new byte[2 + 8 * numberOfBuckets];
+    IntegerHelper.getTwoBytes(getNumberOfStringsPerBucket(), data, 0);
+    for (int i = 0; i < numberOfBuckets; i++) {
+      IntegerHelper.getFourBytes(this.absoluteStreamPositions[i], data, 2 + i * 8);
+      IntegerHelper.getTwoBytes(this.relativeStreamPositions[i], data, 6 + i * 8);
+    } 
+    return data;
+  }
+}