fix the same problem as with PAPX -- CHPX shall be stored based on text positions, not on bytes

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1144638 13f79535-47bb-0310-9956-ffa450edef68

src/scratchpad/src/org/apache/poi/hwpf/model/CHPBinTable.java

@@ -17,17 +17,18 @@
 
 package org.apache.poi.hwpf.model;
 
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
-import java.util.ArrayList;
-import java.io.OutputStream;
-import java.io.IOException;
 
+import org.apache.poi.hwpf.model.io.HWPFFileSystem;
+import org.apache.poi.hwpf.model.io.HWPFOutputStream;
+import org.apache.poi.hwpf.sprm.SprmBuffer;
 import org.apache.poi.poifs.common.POIFSConstants;
 import org.apache.poi.util.LittleEndian;
-import org.apache.poi.hwpf.model.io.*;
-import org.apache.poi.hwpf.sprm.SprmBuffer;
 
 /**
  * This class holds all of the character formatting properties.
@@ -69,16 +70,24 @@ public class CHPBinTable
    * @param size
    * @param fcMin
    */
-  public CHPBinTable(byte[] documentStream, byte[] tableStream, int offset,
+    public CHPBinTable( byte[] documentStream, byte[] tableStream, int offset,
-                     int size, int fcMin, TextPieceTable tpt)
+            int size, int fcMin, TextPieceTable tpt )
     {
-    PlexOfCps binTable = new PlexOfCps(tableStream, offset, size, 4);
+        /*
+         * Page 35:
+         * 
+         * "Associated with each interval is a BTE. A BTE holds a four-byte PN
+         * (page number) which identifies the FKP page in the file which
+         * contains the formatting information for that interval. A CHPX FKP
+         * further partitions an interval into runs of exception text."
+         */
+        PlexOfCps bte = new PlexOfCps( tableStream, offset, size, 4 );
         this.tpt = tpt;
 
-    int length = binTable.length();
+    int length = bte.length();
     for (int x = 0; x < length; x++)
     {
-      GenericPropertyNode node = binTable.getProperty(x);
+      GenericPropertyNode node = bte.getProperty(x);
 
       int pageNum = LittleEndian.getInt(node.getBytes());
       int pageOffset = POIFSConstants.SMALLER_BIG_BLOCK_SIZE * pageNum;
@@ -202,7 +211,15 @@ public class CHPBinTable
     HWPFOutputStream docStream = sys.getStream("WordDocument");
     OutputStream tableStream = sys.getStream("1Table");
 
-    PlexOfCps binTable = new PlexOfCps(4);
+        /*
+         * Page 35:
+         * 
+         * "Associated with each interval is a BTE. A BTE holds a four-byte PN
+         * (page number) which identifies the FKP page in the file which
+         * contains the formatting information for that interval. A CHPX FKP
+         * further partitions an interval into runs of exception text."
+         */
+        PlexOfCps bte = new PlexOfCps( 4 );
 
     // each FKP must start on a 512 byte page.
     int docOffset = docStream.getOffset();
@@ -232,7 +249,7 @@ public class CHPBinTable
       CHPFormattedDiskPage cfkp = new CHPFormattedDiskPage();
       cfkp.fill(overflow);
 
-      byte[] bufFkp = cfkp.toByteArray(fcMin);
+            byte[] bufFkp = cfkp.toByteArray( tpt, fcMin );
       docStream.write(bufFkp);
       overflow = cfkp.getOverflow();
 
@@ -244,10 +261,10 @@ public class CHPBinTable
 
       byte[] intHolder = new byte[4];
       LittleEndian.putInt(intHolder, pageNum++);
-      binTable.addProperty(new GenericPropertyNode(start, end, intHolder));
+      bte.addProperty(new GenericPropertyNode(start, end, intHolder));
 
     }
     while (overflow != null);
-    tableStream.write(binTable.toByteArray());
+    tableStream.write(bte.toByteArray());
   }
 }

src/scratchpad/src/org/apache/poi/hwpf/model/CHPFormattedDiskPage.java

@@ -17,8 +17,8 @@
 
 package org.apache.poi.hwpf.model;
 
-import java.util.List;
 import java.util.ArrayList;
+import java.util.List;
 
 import org.apache.poi.util.LittleEndian;
 
@@ -110,7 +110,7 @@ public final class CHPFormattedDiskPage extends FormattedDiskPage
         return chpx;
     }
 
-    protected byte[] toByteArray(int fcMin)
+    protected byte[] toByteArray(CharIndexTranslator translator, int fcMin)
     {
       byte[] buf = new byte[512];
       int size = _chpxList.size();
@@ -163,7 +163,9 @@ public final class CHPFormattedDiskPage extends FormattedDiskPage
         chpx = (CHPX)_chpxList.get(x);
         byte[] grpprl = chpx.getGrpprl();
 
-        LittleEndian.putInt(buf, fcOffset, chpx.getStartBytes() + fcMin);
+            LittleEndian.putInt( buf, fcOffset,
+                    translator.getByteIndex( chpx.getStart() ) );
+
         grpprlOffset -= (1 + grpprl.length);
         grpprlOffset -= (grpprlOffset % 2);
         buf[offsetOffset] = (byte)(grpprlOffset/2);
@@ -174,7 +176,8 @@ public final class CHPFormattedDiskPage extends FormattedDiskPage
         fcOffset += FC_SIZE;
       }
         // put the last chpx's end in
-      LittleEndian.putInt(buf, fcOffset, chpx.getEndBytes() + fcMin);
+        LittleEndian.putInt( buf, fcOffset,
+                translator.getByteIndex( chpx.getEnd() ) );
       return buf;
     }
 

src/scratchpad/testcases/org/apache/poi/hwpf/usermodel/TestProblems.java

@@ -17,8 +17,6 @@
 
 package org.apache.poi.hwpf.usermodel;
 
-import java.io.File;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.List;
@@ -566,7 +564,8 @@ public final class TestProblems extends HWPFTestCase {
             // doc1.write( fileOutputStream );
             // fileOutputStream.close();
 
-            fixed( "47286" );
+            // not fixed yet, but still better
+            // fixed( "47286" );
         }
         catch ( AssertionFailedError exc )
         {