mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
696 lines
20 KiB
C++
696 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
|
* the License for the specific language governing rights and limitations
|
|
* under the License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape Communications
|
|
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
|
* Netscape Communications Corporation. All Rights Reserved.
|
|
*/
|
|
#include "nsTextTransformer.h"
|
|
#include "nsIContent.h"
|
|
#include "nsIFrame.h"
|
|
#include "nsIStyleContext.h"
|
|
#include "nsITextContent.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsILineBreaker.h"
|
|
#include "nsIWordBreaker.h"
|
|
#include "nsHTMLIIDs.h"
|
|
#include "nsIServiceManager.h"
|
|
#include "nsUnicharUtilCIID.h"
|
|
#include "nsICaseConversion.h"
|
|
|
|
static NS_DEFINE_IID(kUnicharUtilCID, NS_UNICHARUTIL_CID);
|
|
static NS_DEFINE_IID(kICaseConversionIID, NS_ICASECONVERSION_IID);
|
|
static nsICaseConversion* gCaseConv = nsnull;
|
|
|
|
//#define DEBUG_GETPREVWORD
|
|
// XXX I'm sure there are other special characters
|
|
#define CH_NBSP 160
|
|
|
|
#define MAX_UNIBYTE 127
|
|
|
|
nsTextTransformer::nsTextTransformer(PRUnichar* aBuffer, PRInt32 aBufLen,
|
|
nsILineBreaker* aLineBreaker,
|
|
nsIWordBreaker* aWordBreaker)
|
|
: mAutoBuffer(aBuffer),
|
|
mBuffer(aBuffer),
|
|
mBufferLength(aBufLen < 0 ? 0 : aBufLen),
|
|
mHasMultibyte(PR_FALSE),
|
|
mLineBreaker(aLineBreaker),
|
|
mWordBreaker(aWordBreaker)
|
|
{
|
|
NS_IF_ADDREF(mLineBreaker);
|
|
NS_IF_ADDREF(mWordBreaker);
|
|
}
|
|
|
|
nsTextTransformer::~nsTextTransformer()
|
|
{
|
|
if (mBuffer != mAutoBuffer) {
|
|
delete [] mBuffer;
|
|
}
|
|
NS_IF_RELEASE(mLineBreaker);
|
|
NS_IF_RELEASE(mWordBreaker);
|
|
}
|
|
|
|
nsresult
|
|
nsTextTransformer::Init(/*nsTextRun& aTextRun, XXX*/
|
|
nsIFrame* aFrame,
|
|
PRInt32 aStartingOffset)
|
|
{
|
|
// Make sure we have *some* space in case arguments to the ctor were
|
|
// bizzare.
|
|
if (mBufferLength < 100) {
|
|
if (!GrowBuffer()) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
// Get the frames text content
|
|
nsIContent* content;
|
|
aFrame->GetContent(&content);
|
|
nsITextContent* tc;
|
|
if (NS_OK != content->QueryInterface(kITextContentIID, (void**) &tc)) {
|
|
NS_RELEASE(content);
|
|
return NS_OK;
|
|
}
|
|
tc->GetText(mFrags, mNumFrags);
|
|
NS_RELEASE(tc);
|
|
NS_RELEASE(content);
|
|
mStartingOffset = aStartingOffset;
|
|
mOffset = mStartingOffset;
|
|
|
|
// Compute the total length of the text content.
|
|
PRInt32 sum = 0;
|
|
PRInt32 n = mNumFrags;
|
|
const nsTextFragment* frag = mFrags;
|
|
for (; --n >= 0; frag++) {
|
|
sum += frag->GetLength();
|
|
}
|
|
mContentLength = sum;
|
|
|
|
// Set current fragment and current fragment offset
|
|
mCurrentFrag = mFrags;
|
|
mCurrentFragOffset = 0;
|
|
PRInt32 offset = 0;
|
|
n = mNumFrags;
|
|
for (frag = mFrags; --n >= 0; frag++) {
|
|
if (aStartingOffset < offset + frag->GetLength()) {
|
|
mCurrentFrag = frag;
|
|
mCurrentFragOffset = aStartingOffset - offset;
|
|
break;
|
|
}
|
|
offset += frag->GetLength();
|
|
}
|
|
if (mNumFrags && aStartingOffset == mContentLength){
|
|
mCurrentFrag = mFrags + (mNumFrags -1);
|
|
mCurrentFragOffset = mCurrentFrag->GetLength();
|
|
}
|
|
|
|
// Get the frames style and choose a transform proc
|
|
const nsStyleText* styleText;
|
|
aFrame->GetStyleData(eStyleStruct_Text, (const nsStyleStruct*&) styleText);
|
|
mPreformatted = (NS_STYLE_WHITESPACE_PRE == styleText->mWhiteSpace) ||
|
|
(NS_STYLE_WHITESPACE_MOZ_PRE_WRAP == styleText->mWhiteSpace);
|
|
mTextTransform = styleText->mTextTransform;
|
|
|
|
if(NS_STYLE_TEXT_TRANSFORM_NONE != mTextTransform)
|
|
{
|
|
if(nsnull == gCaseConv) {
|
|
nsresult res;
|
|
res = nsServiceManager::GetService(kUnicharUtilCID, kICaseConversionIID,
|
|
(nsISupports**)&gCaseConv);
|
|
NS_ASSERTION( NS_SUCCEEDED(res), "cannot get UnicharUtil");
|
|
NS_ASSERTION( gCaseConv != NULL, "cannot get UnicharUtil");
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsTextTransformer::GrowBuffer(PRBool aForNextWord)
|
|
{
|
|
PRInt32 newLen = mBufferLength * 2;
|
|
if (newLen <= 100) {
|
|
newLen = 100;
|
|
}
|
|
PRUnichar* newBuffer = new PRUnichar[newLen];
|
|
if (nsnull == newBuffer) {
|
|
return PR_FALSE;
|
|
}
|
|
if (0 != mBufferLength) {
|
|
if(aForNextWord)
|
|
nsCRT::memcpy(newBuffer, mBuffer, sizeof(PRUnichar) * mBufferLength);
|
|
else
|
|
nsCRT::memcpy(&newBuffer[mBufferLength], mBuffer, sizeof(PRUnichar) * mBufferLength);
|
|
if (mBuffer != mAutoBuffer) {
|
|
delete [] mBuffer;
|
|
}
|
|
}
|
|
mBuffer = newBuffer;
|
|
mBufferLength = newLen;
|
|
return PR_TRUE;
|
|
}
|
|
|
|
PRUnichar*
|
|
nsTextTransformer::GetNextWord(PRBool aInWord,
|
|
PRInt32& aWordLenResult,
|
|
PRInt32& aContentLenResult,
|
|
PRBool& aIsWhitespaceResult,
|
|
PRBool aForLineBreak)
|
|
{
|
|
NS_PRECONDITION(mOffset <= mContentLength, "bad offset");
|
|
NS_PRECONDITION(((nsnull != mLineBreaker)||(!aForLineBreak)), "null in line breaker");
|
|
NS_PRECONDITION(((nsnull != mWordBreaker)||( aForLineBreak)), "null in word breaker");
|
|
|
|
// See if the content has been exhausted
|
|
if (mOffset == mContentLength) {
|
|
aWordLenResult = 0;
|
|
aContentLenResult = 0;
|
|
return nsnull;
|
|
}
|
|
|
|
PRUnichar* bp = mBuffer;
|
|
PRUnichar* bufEnd = mBuffer + mBufferLength;
|
|
const nsTextFragment* frag = mCurrentFrag;
|
|
const nsTextFragment* lastFrag = mFrags + mNumFrags;
|
|
PRInt32 wordLen = 1;
|
|
PRInt32 contentLen = 1;
|
|
|
|
// Set the isWhitespace flag by examining the next character in the
|
|
// text fragment.
|
|
PRInt32 offset = mCurrentFragOffset;
|
|
PRUnichar firstChar;
|
|
if (frag->Is2b()) {
|
|
const PRUnichar* up = frag->Get2b();
|
|
firstChar = up[offset];
|
|
}
|
|
else {
|
|
const unsigned char* cp = (const unsigned char*) frag->Get1b();
|
|
firstChar = PRUnichar(cp[offset]);
|
|
}
|
|
PRBool isWhitespace = XP_IS_SPACE(firstChar);
|
|
offset++;
|
|
if (isWhitespace) {
|
|
if (mPreformatted) {
|
|
if ('\t' == firstChar) {
|
|
// Leave tab alone so that caller can expand it
|
|
}
|
|
else if ('\n' == firstChar) {
|
|
// Advance content past newline but do not allow newline to
|
|
// remain in the word.
|
|
wordLen--;
|
|
}
|
|
else {
|
|
firstChar = ' ';
|
|
}
|
|
}
|
|
else {
|
|
firstChar = ' ';
|
|
}
|
|
}
|
|
else if (CH_NBSP == firstChar) {
|
|
firstChar = ' ';
|
|
}
|
|
if (firstChar > MAX_UNIBYTE) mHasMultibyte = PR_TRUE;
|
|
*bp++ = firstChar;
|
|
if (offset == frag->GetLength()) {
|
|
mCurrentFrag = ++frag;
|
|
offset = 0;
|
|
}
|
|
mCurrentFragOffset = offset;
|
|
if (isWhitespace && mPreformatted) {
|
|
goto really_done;
|
|
}
|
|
|
|
PRInt32 numChars;
|
|
while (frag < lastFrag) {
|
|
PRInt32 fragLen = frag->GetLength();
|
|
|
|
// Scan characters in this fragment that are the same kind as the
|
|
// isWhitespace flag indicates.
|
|
if (frag->Is2b()) {
|
|
const PRUnichar* cp0 = frag->Get2b();
|
|
const PRUnichar* end = cp0 + fragLen;
|
|
const PRUnichar* cp = cp0 + offset;
|
|
if (isWhitespace) {
|
|
while (cp < end) {
|
|
PRUnichar ch = *cp;
|
|
if (XP_IS_SPACE(ch)) {
|
|
cp++;
|
|
continue;
|
|
}
|
|
numChars = (cp - offset) - cp0;
|
|
contentLen += numChars;
|
|
mCurrentFragOffset += numChars;
|
|
goto done;
|
|
}
|
|
numChars = (cp - offset) - cp0;
|
|
contentLen += numChars;
|
|
}
|
|
else {
|
|
if(wordLen > 0) {
|
|
nsresult res = NS_OK;
|
|
PRBool breakBetween = PR_FALSE;
|
|
if(aForLineBreak)
|
|
res = mLineBreaker->BreakInBetween(mBuffer, wordLen,
|
|
cp, (fragLen-offset), &breakBetween);
|
|
else
|
|
res = mWordBreaker->BreakInBetween(mBuffer, wordLen,
|
|
cp, (fragLen-offset), &breakBetween);
|
|
if ( breakBetween )
|
|
goto done;
|
|
|
|
PRBool tryNextFrag = PR_FALSE;
|
|
PRUint32 next;
|
|
|
|
// Find next position
|
|
|
|
if(aForLineBreak)
|
|
res = mLineBreaker->Next(cp0, fragLen, offset, &next, &tryNextFrag);
|
|
else
|
|
res = mWordBreaker->Next(cp0, fragLen, offset, &next, &tryNextFrag);
|
|
|
|
|
|
numChars = (next - offset);
|
|
// check buffer size before copy
|
|
while((bp + numChars ) > bufEnd) {
|
|
PRInt32 delta = bp - mBuffer;
|
|
if(!GrowBuffer()) {
|
|
goto done;
|
|
}
|
|
bp = mBuffer + delta;
|
|
bufEnd = mBuffer + mBufferLength;
|
|
}
|
|
|
|
wordLen += numChars;
|
|
mCurrentFragOffset += numChars;
|
|
contentLen += numChars;
|
|
end = cp + numChars;
|
|
|
|
// 1. convert nbsp into space
|
|
// 2. check mHasMultibyte flag
|
|
// 3. copy buffer
|
|
|
|
while(cp < end) {
|
|
PRUnichar ch = *cp++;
|
|
if (CH_NBSP == ch) ch = ' ';
|
|
if (ch > MAX_UNIBYTE) mHasMultibyte = PR_TRUE;
|
|
*bp++ = ch;
|
|
}
|
|
if(! tryNextFrag) {
|
|
// can decide break position inside this TextFrag
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
const unsigned char* cp0 = (const unsigned char*) frag->Get1b();
|
|
const unsigned char* end = cp0 + fragLen;
|
|
const unsigned char* cp = cp0 + offset;
|
|
if (isWhitespace) {
|
|
while (cp < end) {
|
|
PRUnichar ch = PRUnichar(*cp);
|
|
if (XP_IS_SPACE(ch)) {
|
|
cp++;
|
|
continue;
|
|
}
|
|
numChars = (cp - offset) - cp0;
|
|
contentLen += numChars;
|
|
mCurrentFragOffset += numChars;
|
|
goto done;
|
|
}
|
|
numChars = (cp - offset) - cp0;
|
|
contentLen += numChars;
|
|
}
|
|
else {
|
|
while (cp < end) {
|
|
PRUnichar ch = PRUnichar(*cp);
|
|
if (!XP_IS_SPACE(ch)) {
|
|
if (CH_NBSP == ch) ch = ' ';
|
|
if (ch > MAX_UNIBYTE) mHasMultibyte = PR_TRUE;
|
|
cp++;
|
|
|
|
// Store character in buffer; grow buffer if we have to
|
|
NS_ASSERTION(bp < bufEnd, "whoops");
|
|
*bp++ = ch;
|
|
if (bp == bufEnd) {
|
|
PRInt32 delta = bp - mBuffer;
|
|
if (!GrowBuffer()) {
|
|
goto done;
|
|
}
|
|
bp = mBuffer + delta;
|
|
bufEnd = mBuffer + mBufferLength;
|
|
}
|
|
continue;
|
|
}
|
|
numChars = (cp - offset) - cp0;
|
|
wordLen += numChars;
|
|
contentLen += numChars;
|
|
mCurrentFragOffset += numChars;
|
|
goto done;
|
|
}
|
|
numChars = (cp - offset) - cp0;
|
|
wordLen += numChars;
|
|
contentLen += numChars;
|
|
}
|
|
}
|
|
|
|
// Advance to next text fragment
|
|
frag++;
|
|
mCurrentFrag = frag;
|
|
mCurrentFragOffset = 0;
|
|
offset = 0;
|
|
}
|
|
|
|
done:;
|
|
|
|
if (!isWhitespace)
|
|
{
|
|
switch(mTextTransform)
|
|
{
|
|
case NS_STYLE_TEXT_TRANSFORM_CAPITALIZE:
|
|
gCaseConv->ToTitle(mBuffer, mBuffer, wordLen, !aInWord);
|
|
break;
|
|
case NS_STYLE_TEXT_TRANSFORM_LOWERCASE:
|
|
gCaseConv->ToLower(mBuffer, mBuffer, wordLen );
|
|
break;
|
|
case NS_STYLE_TEXT_TRANSFORM_UPPERCASE:
|
|
gCaseConv->ToUpper(mBuffer, mBuffer, wordLen );
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
really_done:;
|
|
mOffset += contentLen;
|
|
NS_ASSERTION(mOffset <= mContentLength, "whoops");
|
|
aWordLenResult = wordLen;
|
|
aContentLenResult = contentLen;
|
|
aIsWhitespaceResult = isWhitespace;
|
|
|
|
return mBuffer;
|
|
}
|
|
|
|
PRUnichar*
|
|
nsTextTransformer::GetPrevWord(PRBool aInWord,
|
|
PRInt32& aWordLenResult,
|
|
PRInt32& aContentLenResult,
|
|
PRBool& aIsWhitespaceResult,
|
|
PRBool aForLineBreak)
|
|
{
|
|
NS_PRECONDITION(mOffset <= mContentLength, "bad offset");
|
|
NS_PRECONDITION(((nsnull != mLineBreaker)||(!aForLineBreak)), "null in line breaker");
|
|
NS_PRECONDITION(((nsnull != mWordBreaker)||( aForLineBreak)), "null in word breaker");
|
|
|
|
// See if the content has been exhausted
|
|
if (mOffset == 0) {
|
|
aWordLenResult = 0;
|
|
aContentLenResult = 0;
|
|
return nsnull;
|
|
}
|
|
|
|
PRUnichar* bp = mBuffer+mBufferLength-1;
|
|
PRUnichar* bufEnd = mBuffer ;
|
|
const nsTextFragment* frag = mCurrentFrag;
|
|
const nsTextFragment* lastFrag = mFrags;//1st is the last
|
|
PRInt32 wordLen = 1;
|
|
PRInt32 contentLen = 1;
|
|
|
|
// Set the isWhitespace flag by examining the next character in the
|
|
// text fragment.
|
|
PRInt32 offset = mCurrentFragOffset-1;
|
|
PRUnichar firstChar;
|
|
if (frag->Is2b()) {
|
|
const PRUnichar* up = frag->Get2b();
|
|
if (offset > 0)
|
|
firstChar = up[offset];
|
|
else
|
|
firstChar = up[0];
|
|
}
|
|
else {
|
|
const unsigned char* cp = (const unsigned char*) frag->Get1b();
|
|
if (offset > 0)
|
|
firstChar = PRUnichar(cp[offset]);
|
|
else
|
|
firstChar = PRUnichar(cp[0]);
|
|
}
|
|
PRBool isWhitespace = XP_IS_SPACE(firstChar);
|
|
offset--;
|
|
if (isWhitespace) {
|
|
if (mPreformatted) {
|
|
if ('\t' == firstChar) {
|
|
// Leave tab alone so that caller can expand it
|
|
}
|
|
else if ('\n' == firstChar) {
|
|
// Advance content past newline but do not allow newline to
|
|
// remain in the word.
|
|
wordLen--;
|
|
}
|
|
else {
|
|
firstChar = ' ';
|
|
}
|
|
}
|
|
else {
|
|
firstChar = ' ';
|
|
}
|
|
}
|
|
else if (CH_NBSP == firstChar) {
|
|
firstChar = ' ';
|
|
}
|
|
if(firstChar > MAX_UNIBYTE) mHasMultibyte = PR_TRUE;
|
|
*bp-- = firstChar;
|
|
mCurrentFragOffset = offset +1;
|
|
if (offset < 0) {
|
|
if (mCurrentFrag == mFrags){
|
|
goto really_done;
|
|
}
|
|
mCurrentFrag = --frag;
|
|
offset = mCurrentFrag->GetLength()-1;
|
|
}
|
|
if (isWhitespace && mPreformatted) {
|
|
goto really_done;
|
|
}
|
|
|
|
PRInt32 numChars;
|
|
do {
|
|
// Scan characters in this fragment that are the same kind as the
|
|
// isWhitespace flag indicates.
|
|
if (frag->Is2b()) {
|
|
const PRUnichar* cp0 = frag->Get2b();
|
|
const PRUnichar* end = cp0;
|
|
const PRUnichar* cp = cp0 + offset;
|
|
if (isWhitespace) {
|
|
while (cp > end) {
|
|
PRUnichar ch = *cp;
|
|
if (XP_IS_SPACE(ch)) {
|
|
cp--;
|
|
continue;
|
|
}
|
|
numChars = (cp0 + offset) - cp;
|
|
contentLen += numChars;
|
|
mCurrentFragOffset -= numChars;
|
|
goto done;
|
|
}
|
|
numChars = (cp0 + offset) - cp;
|
|
contentLen += numChars;
|
|
}
|
|
else {
|
|
if(wordLen > 0) {
|
|
nsresult res = NS_OK;
|
|
PRBool breakBetween = PR_FALSE;
|
|
if(aForLineBreak)
|
|
res = mLineBreaker->BreakInBetween(
|
|
cp0, offset+1,
|
|
&(mBuffer[mBufferLength-wordLen]), wordLen,
|
|
&breakBetween);
|
|
else
|
|
res = mWordBreaker->BreakInBetween(
|
|
cp0, offset+1,
|
|
&(mBuffer[mBufferLength-wordLen]), wordLen,
|
|
&breakBetween);
|
|
if ( breakBetween )
|
|
goto done;
|
|
|
|
PRBool tryPrevFrag = PR_FALSE;
|
|
PRUint32 prev;
|
|
|
|
// Find prev position
|
|
|
|
if(aForLineBreak)
|
|
res = mLineBreaker->Prev(cp0, offset, offset, &prev, &tryPrevFrag);
|
|
else
|
|
res = mWordBreaker->Prev(cp0, offset, offset, &prev, &tryPrevFrag);
|
|
|
|
|
|
numChars = (offset - prev)+1;
|
|
// check buffer size before copy
|
|
while((bp - numChars ) < bufEnd) {
|
|
PRInt32 delta = (&(mBuffer[mBufferLength])) - bp -1 ;
|
|
if(!GrowBuffer()) {
|
|
goto done;
|
|
}
|
|
bp = (&(mBuffer[mBufferLength])) - delta - 1;
|
|
bufEnd = mBuffer;
|
|
}
|
|
|
|
wordLen += numChars;
|
|
mCurrentFragOffset -= numChars;
|
|
contentLen += numChars;
|
|
end = cp - numChars;
|
|
|
|
// 1. convert nbsp into space
|
|
// 2. check mHasMultibyte flag
|
|
// 3. copy buffer
|
|
|
|
while(cp > end) {
|
|
PRUnichar ch = *cp--;
|
|
if (CH_NBSP == ch) ch = ' ';
|
|
if (ch > MAX_UNIBYTE) mHasMultibyte = PR_TRUE;
|
|
*bp-- = ch;
|
|
}
|
|
if(! tryPrevFrag) {
|
|
// can decide break position inside this TextFrag
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
const unsigned char* cp0 = (const unsigned char*) frag->Get1b();
|
|
const unsigned char* end = cp0;
|
|
const unsigned char* cp = cp0 + offset;
|
|
if (isWhitespace) {
|
|
while (cp > end) {
|
|
PRUnichar ch = PRUnichar(*cp);
|
|
if (XP_IS_SPACE(ch)) {
|
|
cp--;
|
|
continue;
|
|
}
|
|
numChars = (cp0 + offset) - cp;
|
|
contentLen += numChars;
|
|
mCurrentFragOffset -= numChars;
|
|
goto done;
|
|
}
|
|
numChars = (cp0 + offset) - cp;
|
|
contentLen += numChars;
|
|
}
|
|
else {
|
|
while (cp >= end) {
|
|
PRUnichar ch = PRUnichar(*cp);
|
|
if (!XP_IS_SPACE(ch)) {
|
|
if (CH_NBSP == ch) ch = ' ';
|
|
if (ch > MAX_UNIBYTE) mHasMultibyte = PR_TRUE;
|
|
cp--;
|
|
|
|
// Store character in buffer; grow buffer if we have to
|
|
NS_ASSERTION(bp > bufEnd, "whoops");
|
|
*bp-- = ch;
|
|
if (bp == bufEnd) {
|
|
PRInt32 delta = (&(mBuffer[mBufferLength])) - bp - 1;
|
|
if (!GrowBuffer(PR_FALSE)) {
|
|
goto done;
|
|
}
|
|
bp = (&(mBuffer[mBufferLength])) - delta - 1;
|
|
bufEnd = mBuffer;
|
|
}
|
|
continue;
|
|
}
|
|
numChars = (cp0 + offset) - cp;
|
|
wordLen += numChars;
|
|
contentLen += numChars;
|
|
mCurrentFragOffset -= numChars;
|
|
goto done;
|
|
}
|
|
numChars = (cp0 + offset) - cp;
|
|
wordLen += numChars;
|
|
contentLen += numChars;
|
|
}
|
|
}
|
|
|
|
// Advance to next text fragment
|
|
if (frag != lastFrag)
|
|
{
|
|
frag--;
|
|
mCurrentFrag = frag;
|
|
mCurrentFragOffset = mCurrentFrag->GetLength()-1;
|
|
offset = mCurrentFragOffset;
|
|
}
|
|
else
|
|
mCurrentFragOffset = 0;
|
|
}
|
|
while (frag > lastFrag);
|
|
|
|
done:;
|
|
|
|
if (!isWhitespace)
|
|
{
|
|
switch(mTextTransform)
|
|
{
|
|
case NS_STYLE_TEXT_TRANSFORM_CAPITALIZE:
|
|
gCaseConv->ToTitle(&(mBuffer[mBufferLength-wordLen]),
|
|
&(mBuffer[mBufferLength-wordLen]),
|
|
wordLen, !aInWord);
|
|
break;
|
|
case NS_STYLE_TEXT_TRANSFORM_LOWERCASE:
|
|
gCaseConv->ToLower(&(mBuffer[mBufferLength-wordLen]),
|
|
&(mBuffer[mBufferLength-wordLen]),
|
|
wordLen );
|
|
break;
|
|
case NS_STYLE_TEXT_TRANSFORM_UPPERCASE:
|
|
gCaseConv->ToUpper(&(mBuffer[mBufferLength-wordLen]),
|
|
&(mBuffer[mBufferLength-wordLen]),
|
|
wordLen );
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
really_done:;
|
|
mOffset -= contentLen;
|
|
NS_ASSERTION(mOffset >= 0, "whoops");
|
|
aWordLenResult = wordLen;
|
|
aContentLenResult = contentLen;
|
|
aIsWhitespaceResult = isWhitespace;
|
|
|
|
|
|
#ifdef DEBUG_GETPREVWORD
|
|
{
|
|
printf(aIsWhitespaceResult ? "#1 WHITESPACE\n": "NOT WHITESPACE\n");
|
|
if(! aIsWhitespaceResult)
|
|
{
|
|
PRUnichar* wordBufMem = &(mBuffer[mBufferLength-wordLen]);
|
|
PRInt32 ax;
|
|
for(ax=0; ax<wordLen; ax++) {
|
|
if(wordBufMem[ax] < 0x080)
|
|
printf("%c", (char)wordBufMem[ax]);
|
|
else
|
|
printf("[U+%04X]", wordBufMem[ax]);
|
|
}
|
|
printf("(%d)\n",wordLen);
|
|
}
|
|
}
|
|
#endif
|
|
return &(mBuffer[mBufferLength-wordLen]);
|
|
}
|
|
|
|
PRUnichar*
|
|
nsTextTransformer::GetTextAt(PRInt32 aOffset)
|
|
{
|
|
// XXX
|
|
return mBuffer + aOffset;
|
|
}
|