void
NS_GetComplexLineBreaks(const PRUnichar* aText, PRUint32 aLength,
PRUint8* aBreakBefore)
{
NS_ASSERTION(aText, "aText shouldn't be null");
TextBreakLocatorRef breakLocator;
memset(aBreakBefore, false, aLength * sizeof(PRUint8));
OSStatus status = UCCreateTextBreakLocator(NULL, 0, kUCTextBreakLineMask, &breakLocator);
if (status != noErr)
return;
for (UniCharArrayOffset position = 0; position < aLength;) {
UniCharArrayOffset offset;
status = UCFindTextBreak(breakLocator,
kUCTextBreakLineMask,
position == 0 ? kUCTextBreakLeadingEdgeMask :
(kUCTextBreakLeadingEdgeMask |
kUCTextBreakIterateMask),
aText,
aLength,
position,
&offset);
if (status != noErr)
break;
aBreakBefore[offset] = true;
position = offset;
}
UCDisposeTextBreakLocator(&breakLocator);
}
int nextBreakablePosition(const UChar* str, int pos, int len, bool treatNoBreakSpaceAsBreak)
{
#if !PLATFORM(MAC) || !defined(BUILDING_ON_TIGER)
TextBreakIterator* breakIterator = 0;
#endif
int nextBreak = -1;
UChar lastCh = pos > 0 ? str[pos - 1] : 0;
for (int i = pos; i < len; i++) {
UChar ch = str[i];
if (isBreakableSpace(ch, treatNoBreakSpaceAsBreak) || shouldBreakAfter(lastCh))
return i;
if (needsLineBreakIterator(ch) || needsLineBreakIterator(lastCh)) {
if (nextBreak < i && i) {
#if !PLATFORM(MAC) || !defined(BUILDING_ON_TIGER)
if (!breakIterator)
breakIterator = lineBreakIterator(str, len);
if (breakIterator)
nextBreak = textBreakFollowing(breakIterator, i - 1);
#else
static TextBreakLocatorRef breakLocator = lineBreakLocator();
if (breakLocator) {
UniCharArrayOffset nextUCBreak;
if (UCFindTextBreak(breakLocator, kUCTextBreakLineMask, 0, str, len, i, &nextUCBreak) == 0)
nextBreak = nextUCBreak;
}
#endif
}
if (i == nextBreak && !isBreakableSpace(lastCh, treatNoBreakSpaceAsBreak))
return i;
}
lastCh = ch;
}
return len;
}
void doForwardTest() {
if (opt_terse == FALSE) {
printf("Doing the forward test\n");
}
int32_t noBreaks = 0;
int32_t i = 0;
unsigned long startTime = timeGetTime();
unsigned long elapsedTime = 0;
if(opt_icu) {
createICUBrkIt();
brkit->setText(text);
brkit->first();
if (opt_terse == FALSE) {
printf("Warmup\n");
}
while(brkit->next() != BreakIterator::DONE) {
noBreaks++;
}
if (opt_terse == FALSE) {
printf("Measure\n");
}
startTime = timeGetTime();
for(i = 0; i < opt_loopCount; i++) {
brkit->first();
while(brkit->next() != BreakIterator::DONE) {
}
}
elapsedTime = timeGetTime()-startTime;
} else if(opt_mac) {
#ifdef U_DARWIN
createMACBrkIt();
UniChar* filePtr = text;
OSStatus status = noErr;
UniCharCount startOffset = 0, breakOffset = 0, numUniChars = textSize;
startOffset = 0;
//printf("\t---Search forward--\n");
while (startOffset < numUniChars)
{
status = UCFindTextBreak(breakRef, macBreakType, kUCTextBreakLeadingEdgeMask, filePtr, numUniChars,
startOffset, &breakOffset);
//require_action(status == noErr, EXIT, printf( "**UCFindTextBreak failed: startOffset %d, status %d\n", (int)startOffset, (int)status));
//require_action((breakOffset <= numUniChars),EXIT, printf("**UCFindTextBreak breakOffset too big: startOffset %d, breakOffset %d\n", (int)startOffset, (int)breakOffset));
// Output break
//printf("\t%d\n", (int)breakOffset);
// Increment counters
noBreaks++;
startOffset = breakOffset;
}
startTime = timeGetTime();
for(i = 0; i < opt_loopCount; i++) {
startOffset = 0;
while (startOffset < numUniChars)
{
status = UCFindTextBreak(breakRef, macBreakType, kUCTextBreakLeadingEdgeMask, filePtr, numUniChars,
startOffset, &breakOffset);
// Increment counters
startOffset = breakOffset;
}
}
elapsedTime = timeGetTime()-startTime;
UCDisposeTextBreakLocator(&breakRef);
#endif
}
if (opt_terse == FALSE) {
int32_t loopTime = (int)(float(1000) * ((float)elapsedTime/(float)opt_loopCount));
int32_t timePerCU = (int)(float(1000) * ((float)loopTime/(float)textSize));
int32_t timePerBreak = (int)(float(1000) * ((float)loopTime/(float)noBreaks));
printf("forward break iteration average loop time %d\n", loopTime);
printf("number of code units %d average time per code unit %d\n", textSize, timePerCU);
printf("number of breaks %d average time per break %d\n", noBreaks, timePerBreak);
} else {
printf("time=%d\nevents=%d\nsize=%d\n", elapsedTime, noBreaks, textSize);
}
}