first commit

hrmsEjb/jxl/biff/drawing/DrawingData.java

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+package jxl.biff.drawing;
+
+import common.Assert;
+import common.Logger;
+import java.util.ArrayList;
+
+public class DrawingData implements EscherStream {
+  private static Logger logger = Logger.getLogger(DrawingData.class);
+  
+  private int numDrawings = 0;
+  
+  private byte[] drawingData = null;
+  
+  private boolean initialized = false;
+  
+  private EscherRecord[] spContainers;
+  
+  private void initialize() {
+    EscherRecordData er = new EscherRecordData(this, 0);
+    Assert.verify(er.isContainer());
+    EscherContainer dgContainer = new EscherContainer(er);
+    EscherRecord[] children = dgContainer.getChildren();
+    children = dgContainer.getChildren();
+    EscherContainer spgrContainer = null;
+    for (int i = 0; i < children.length && spgrContainer == null; i++) {
+      EscherRecord child = children[i];
+      if (child.getType() == EscherRecordType.SPGR_CONTAINER)
+        spgrContainer = (EscherContainer)child; 
+    } 
+    Assert.verify((spgrContainer != null));
+    EscherRecord[] spgrChildren = spgrContainer.getChildren();
+    boolean nestedContainers = false;
+    for (int j = 0; j < spgrChildren.length && !nestedContainers; j++) {
+      if (spgrChildren[j].getType() == EscherRecordType.SPGR_CONTAINER)
+        nestedContainers = true; 
+    } 
+    if (!nestedContainers) {
+      this.spContainers = spgrChildren;
+    } else {
+      ArrayList sps = new ArrayList();
+      getSpContainers(spgrContainer, sps);
+      this.spContainers = new EscherRecord[sps.size()];
+      this.spContainers = (EscherRecord[])sps.toArray((Object[])this.spContainers);
+    } 
+    this.initialized = true;
+  }
+  
+  private void getSpContainers(EscherContainer spgrContainer, ArrayList sps) {
+    EscherRecord[] spgrChildren = spgrContainer.getChildren();
+    for (int i = 0; i < spgrChildren.length; i++) {
+      if (spgrChildren[i].getType() == EscherRecordType.SP_CONTAINER) {
+        sps.add(spgrChildren[i]);
+      } else if (spgrChildren[i].getType() == EscherRecordType.SPGR_CONTAINER) {
+        getSpContainers((EscherContainer)spgrChildren[i], sps);
+      } else {
+        logger.warn("Spgr Containers contains a record other than Sp/Spgr containers");
+      } 
+    } 
+  }
+  
+  public void addData(byte[] data) {
+    addRawData(data);
+    this.numDrawings++;
+  }
+  
+  public void addRawData(byte[] data) {
+    if (this.drawingData == null) {
+      this.drawingData = data;
+      return;
+    } 
+    byte[] newArray = new byte[this.drawingData.length + data.length];
+    System.arraycopy(this.drawingData, 0, newArray, 0, this.drawingData.length);
+    System.arraycopy(data, 0, newArray, this.drawingData.length, data.length);
+    this.drawingData = newArray;
+    this.initialized = false;
+  }
+  
+  final int getNumDrawings() {
+    return this.numDrawings;
+  }
+  
+  EscherContainer getSpContainer(int drawingNum) {
+    if (!this.initialized)
+      initialize(); 
+    EscherContainer spContainer = (EscherContainer)this.spContainers[drawingNum + 1];
+    Assert.verify((spContainer != null));
+    return spContainer;
+  }
+  
+  public byte[] getData() {
+    return this.drawingData;
+  }
+}