/*
***************************************************************************
-* Copyright (C) 1999-2012 International Business Machines Corporation
+* Copyright (C) 1999-2014 International Business Machines Corporation
* and others. All rights reserved.
***************************************************************************
*/
//-----------------------------------------------------------------------------
void RuleBasedBreakIterator::init() {
UErrorCode status = U_ZERO_ERROR;
- fBufferClone = FALSE;
fText = utext_openUChars(NULL, NULL, 0, &status);
fCharIter = NULL;
fSCharIter = NULL;
}
int32_t startPos = current();
+ fDictionaryCharCount = 0;
int32_t result = handleNext(fData->fForwardTable);
if (fDictionaryCharCount > 0) {
result = checkDictionary(startPos, result, FALSE);
// break position before the current position (we back our internal
// iterator up one step to prevent handlePrevious() from returning
// the current position), but not necessarily the last one before
-
// where we started
int32_t start = current();
// the result position that we are to return (in lastResult.) If
// the backwards rules overshot and the above loop had to do two or more
// next()s to move up to the desired return position, we will have a valid
- // tag value. But, if handlePrevious() took us to exactly the correct result positon,
+ // tag value. But, if handlePrevious() took us to exactly the correct result position,
// we wont have a tag value for that position, which is only set by handleNext().
- // set the current iteration position to be the last break position
- // before where we started, and then return that value
+ // Set the current iteration position to be the last break position
+ // before where we started, and then return that value.
utext_setNativeIndex(fText, lastResult);
fLastRuleStatusIndex = lastTag; // for use by getRuleStatus()
fLastStatusIndexValid = breakTagValid;
}
-
-
-//-------------------------------------------------------------------------------
-//
-// BufferClone TODO: In my (Andy) opinion, this function should be deprecated.
-// Saving one heap allocation isn't worth the trouble.
-// Cloning shouldn't be done in tight loops, and
-// making the clone copy involves other heap operations anyway.
-// And the application code for correctly dealing with buffer
-// size problems and the eventual object destruction is ugly.
-//
-//-------------------------------------------------------------------------------
-BreakIterator * RuleBasedBreakIterator::createBufferClone(void *stackBuffer,
+BreakIterator * RuleBasedBreakIterator::createBufferClone(void * /*stackBuffer*/,
int32_t &bufferSize,
UErrorCode &status)
{
return NULL;
}
- //
- // If user buffer size is zero this is a preflight operation to
- // obtain the needed buffer size, allowing for worst case misalignment.
- //
if (bufferSize == 0) {
- bufferSize = sizeof(RuleBasedBreakIterator) + U_ALIGNMENT_OFFSET_UP(0);
+ bufferSize = 1; // preflighting for deprecated functionality
return NULL;
}
-
- //
- // Check the alignment and size of the user supplied buffer.
- // Allocate heap memory if the user supplied memory is insufficient.
- //
- char *buf = (char *)stackBuffer;
- uint32_t s = bufferSize;
-
- if (stackBuffer == NULL) {
- s = 0; // Ignore size, force allocation if user didn't give us a buffer.
- }
- if (U_ALIGNMENT_OFFSET(stackBuffer) != 0) {
- uint32_t offsetUp = (uint32_t)U_ALIGNMENT_OFFSET_UP(buf);
- s -= offsetUp;
- buf += offsetUp;
- }
- if (s < sizeof(RuleBasedBreakIterator)) {
- // Not enough room in the caller-supplied buffer.
- // Do a plain-vanilla heap based clone and return that, along with
- // a warning that the clone was allocated.
- RuleBasedBreakIterator *clonedBI = new RuleBasedBreakIterator(*this);
- if (clonedBI == 0) {
- status = U_MEMORY_ALLOCATION_ERROR;
- } else {
- status = U_SAFECLONE_ALLOCATED_WARNING;
- }
- return clonedBI;
+ BreakIterator *clonedBI = clone();
+ if (clonedBI == NULL) {
+ status = U_MEMORY_ALLOCATION_ERROR;
+ } else {
+ status = U_SAFECLONE_ALLOCATED_WARNING;
}
-
- //
- // Clone the source BI into the caller-supplied buffer.
- //
- RuleBasedBreakIterator *clone = new(buf) RuleBasedBreakIterator(*this);
- clone->fBufferClone = TRUE; // Flag to prevent deleting storage on close (From C code)
-
- return clone;
+ return (RuleBasedBreakIterator *)clonedBI;
}
// If we found breaks, build a new break cache. The first and last entries must
// be the original starting and ending position.
if (foundBreakCount > 0) {
+ U_ASSERT(foundBreakCount == breaks.size());
int32_t totalBreaks = foundBreakCount;
if (startPos < breaks.elementAti(0)) {
totalBreaks += 1;
return (reverse ? startPos : endPos);
}
+// defined in ucln_cmn.h
+
U_NAMESPACE_END
-// defined in ucln_cmn.h
static icu::UStack *gLanguageBreakFactories = NULL;
+static icu::UInitOnce gLanguageBreakFactoriesInitOnce = U_INITONCE_INITIALIZER;
/**
* Release all static memory held by breakiterator.
delete gLanguageBreakFactories;
gLanguageBreakFactories = NULL;
}
+ gLanguageBreakFactoriesInitOnce.reset();
return TRUE;
}
U_CDECL_END
U_CDECL_END
U_NAMESPACE_BEGIN
-static const LanguageBreakEngine*
-getLanguageBreakEngineFromFactory(UChar32 c, int32_t breakType)
-{
- UBool needsInit;
- UErrorCode status = U_ZERO_ERROR;
- UMTX_CHECK(NULL, (UBool)(gLanguageBreakFactories == NULL), needsInit);
-
- if (needsInit) {
- UStack *factories = new UStack(_deleteFactory, NULL, status);
- if (factories != NULL && U_SUCCESS(status)) {
- ICULanguageBreakFactory *builtIn = new ICULanguageBreakFactory(status);
- factories->push(builtIn, status);
+static void U_CALLCONV initLanguageFactories() {
+ UErrorCode status = U_ZERO_ERROR;
+ U_ASSERT(gLanguageBreakFactories == NULL);
+ gLanguageBreakFactories = new UStack(_deleteFactory, NULL, status);
+ if (gLanguageBreakFactories != NULL && U_SUCCESS(status)) {
+ ICULanguageBreakFactory *builtIn = new ICULanguageBreakFactory(status);
+ gLanguageBreakFactories->push(builtIn, status);
#ifdef U_LOCAL_SERVICE_HOOK
- LanguageBreakFactory *extra = (LanguageBreakFactory *)uprv_svc_hook("languageBreakFactory", &status);
- if (extra != NULL) {
- factories->push(extra, status);
- }
-#endif
- }
- umtx_lock(NULL);
- if (gLanguageBreakFactories == NULL) {
- gLanguageBreakFactories = factories;
- factories = NULL;
- ucln_common_registerCleanup(UCLN_COMMON_BREAKITERATOR_DICT, breakiterator_cleanup_dict);
+ LanguageBreakFactory *extra = (LanguageBreakFactory *)uprv_svc_hook("languageBreakFactory", &status);
+ if (extra != NULL) {
+ gLanguageBreakFactories->push(extra, status);
}
- umtx_unlock(NULL);
- delete factories;
+#endif
}
-
+ ucln_common_registerCleanup(UCLN_COMMON_BREAKITERATOR_DICT, breakiterator_cleanup_dict);
+}
+
+
+static const LanguageBreakEngine*
+getLanguageBreakEngineFromFactory(UChar32 c, int32_t breakType)
+{
+ umtx_initOnce(gLanguageBreakFactoriesInitOnce, &initLanguageFactories);
if (gLanguageBreakFactories == NULL) {
return NULL;
}
projects / apple / icu.git / blobdiff