first commit

hrmsEjb/jxl/write/biff/SharedStrings.java

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+package jxl.write.biff;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import jxl.biff.ByteData;
+
+class SharedStrings {
+  private HashMap strings = new HashMap(100);
+  
+  private ArrayList stringList = new ArrayList(100);
+  
+  private int totalOccurrences = 0;
+  
+  public int getIndex(String s) {
+    Integer i = (Integer)this.strings.get(s);
+    if (i == null) {
+      i = new Integer(this.strings.size());
+      this.strings.put(s, i);
+      this.stringList.add(s);
+    } 
+    this.totalOccurrences++;
+    return i.intValue();
+  }
+  
+  public String get(int i) {
+    return this.stringList.get(i);
+  }
+  
+  public void write(File outputFile) throws IOException {
+    int charsLeft = 0;
+    String curString = null;
+    SSTRecord sst = new SSTRecord(this.totalOccurrences, this.stringList.size());
+    ExtendedSSTRecord extsst = new ExtendedSSTRecord(this.stringList.size());
+    int bucketSize = extsst.getNumberOfStringsPerBucket();
+    Iterator i = this.stringList.iterator();
+    int stringIndex = 0;
+    while (i.hasNext() && charsLeft == 0) {
+      curString = i.next();
+      int relativePosition = sst.getOffset() + 4;
+      charsLeft = sst.add(curString);
+      if (stringIndex % bucketSize == 0)
+        extsst.addString(outputFile.getPos(), relativePosition); 
+      stringIndex++;
+    } 
+    outputFile.write((ByteData)sst);
+    if (charsLeft != 0 || i.hasNext()) {
+      SSTContinueRecord cont = createContinueRecord(curString, charsLeft, outputFile);
+      while (i.hasNext()) {
+        curString = i.next();
+        int relativePosition = cont.getOffset() + 4;
+        charsLeft = cont.add(curString);
+        if (stringIndex % bucketSize == 0)
+          extsst.addString(outputFile.getPos(), relativePosition); 
+        stringIndex++;
+        if (charsLeft != 0) {
+          outputFile.write((ByteData)cont);
+          cont = createContinueRecord(curString, charsLeft, outputFile);
+        } 
+      } 
+      outputFile.write((ByteData)cont);
+    } 
+    outputFile.write((ByteData)extsst);
+  }
+  
+  private SSTContinueRecord createContinueRecord(String curString, int charsLeft, File outputFile) throws IOException {
+    SSTContinueRecord cont = null;
+    while (charsLeft != 0) {
+      cont = new SSTContinueRecord();
+      if (charsLeft == curString.length() || curString.length() == 0) {
+        charsLeft = cont.setFirstString(curString, true);
+      } else {
+        charsLeft = cont.setFirstString(curString.substring(curString.length() - charsLeft), false);
+      } 
+      if (charsLeft != 0) {
+        outputFile.write((ByteData)cont);
+        cont = new SSTContinueRecord();
+      } 
+    } 
+    return cont;
+  }
+}