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HWPF: better fix for TextPieceTable.getCharIndex() 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@960922 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Maxim Valyanskiy 2010-07-06 15:45:36 +00:00
parent 2075a28c70
commit 06b37ca45b
1 changed files with 36 additions and 15 deletions
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51
src/scratchpad/src/org/apache/poi/hwpf/model/TextPieceTable.java
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@ -242,29 +242,50 @@ public final class TextPieceTable implements CharIndexTranslator {
return false; return false;
} }
public int getCharIndex(int bytePos) { public int getCharIndex(int bytePos) {
int charCount = 0; int charCount = 0;
for(TextPiece tp : _textPiecesFCOrder) { for(TextPiece tp : _textPiecesFCOrder) {
int pieceStart = tp.getPieceDescriptor().getFilePosition(); int pieceStart = tp.getPieceDescriptor().getFilePosition();
if (pieceStart >= bytePos) {
break; if (bytePos > pieceStart + tp.bytesLength()) {
continue;
}
if (pieceStart > bytePos) {
bytePos = pieceStart;
} }
int bytesLength = tp.bytesLength(); break;
int pieceEnd = pieceStart + bytesLength; }
int toAdd = bytePos > pieceEnd ? bytesLength : bytesLength - (pieceEnd - bytePos); for(TextPiece tp : _textPieces) {
int pieceStart = tp.getPieceDescriptor().getFilePosition();
if (tp.isUnicode()) { int bytesLength = tp.bytesLength();
charCount += toAdd / 2; int pieceEnd = pieceStart + bytesLength;
} else {
charCount += toAdd;
}
}
return charCount; int toAdd;
}
if (bytePos< pieceStart || bytePos > pieceEnd) {
toAdd = bytesLength;
} else {
toAdd = bytesLength - (pieceEnd - bytePos);
}
if (tp.isUnicode()) {
charCount += toAdd / 2;
} else {
charCount += toAdd;
}
if (bytePos>=pieceStart && bytePos<=pieceEnd) {
break;
}
}
return charCount;
}
private static class FCComparator implements Comparator<TextPiece> { private static class FCComparator implements Comparator<TextPiece> {
public int compare(TextPiece textPiece, TextPiece textPiece1) { public int compare(TextPiece textPiece, TextPiece textPiece1) {