-/**
- *******************************************************************************
- * Copyright (C) 2006, International Business Machines Corporation and others. *
- * All Rights Reserved. *
- *******************************************************************************
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+ ************************************************************************************
+ * Copyright (C) 2006-2016, International Business Machines Corporation
+ * and others. All Rights Reserved.
+ ************************************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_BREAK_ITERATION
-#include "brkeng.h"
-#include "dictbe.h"
-#include "triedict.h"
#include "unicode/uchar.h"
#include "unicode/uniset.h"
#include "unicode/chariter.h"
#include "unicode/putil.h"
#include "unicode/ustring.h"
#include "unicode/uscript.h"
-#include "uvector.h"
+#include "unicode/ucharstrie.h"
+#include "unicode/bytestrie.h"
+
+#include "brkeng.h"
+#include "cmemory.h"
+#include "dictbe.h"
+#include "charstr.h"
+#include "dictionarydata.h"
#include "mutex.h"
+#include "uvector.h"
+#include "umutex.h"
#include "uresimp.h"
#include "ubrkimpl.h"
******************************************************************
*/
-UnhandledEngine::UnhandledEngine(UErrorCode &/*status*/) {
- for (int32_t i = 0; i < (int32_t)(sizeof(fHandled)/sizeof(fHandled[0])); ++i) {
- fHandled[i] = 0;
- }
+UnhandledEngine::UnhandledEngine(UErrorCode &status) : fHandled(nullptr) {
+ (void)status;
}
UnhandledEngine::~UnhandledEngine() {
- for (int32_t i = 0; i < (int32_t)(sizeof(fHandled)/sizeof(fHandled[0])); ++i) {
- if (fHandled[i] != 0) {
- delete fHandled[i];
- }
- }
+ delete fHandled;
+ fHandled = nullptr;
}
UBool
-UnhandledEngine::handles(UChar32 c, int32_t breakType) const {
- return (breakType >= 0 && breakType < (int32_t)(sizeof(fHandled)/sizeof(fHandled[0]))
- && fHandled[breakType] != 0 && fHandled[breakType]->contains(c));
+UnhandledEngine::handles(UChar32 c) const {
+ return fHandled && fHandled->contains(c);
}
int32_t
UnhandledEngine::findBreaks( UText *text,
- int32_t startPos,
- int32_t endPos,
- UBool reverse,
- int32_t breakType,
- UStack &/*foundBreaks*/ ) const {
- if (breakType >= 0 && breakType < (int32_t)(sizeof(fHandled)/sizeof(fHandled[0]))) {
- UChar32 c = utext_current32(text);
- if (reverse) {
- while((int32_t)utext_getNativeIndex(text) > startPos && fHandled[breakType]->contains(c)) {
- c = utext_previous32(text);
- }
- }
- else {
- while((int32_t)utext_getNativeIndex(text) < endPos && fHandled[breakType]->contains(c)) {
- utext_next32(text); // TODO: recast loop to work with post-increment operations.
- c = utext_current32(text);
- }
- }
+ int32_t /* startPos */,
+ int32_t endPos,
+ UVector32 &/*foundBreaks*/ ) const {
+ UChar32 c = utext_current32(text);
+ while((int32_t)utext_getNativeIndex(text) < endPos && fHandled->contains(c)) {
+ utext_next32(text); // TODO: recast loop to work with post-increment operations.
+ c = utext_current32(text);
}
return 0;
}
void
-UnhandledEngine::handleCharacter(UChar32 c, int32_t breakType) {
- if (breakType >= 0 && breakType < (int32_t)(sizeof(fHandled)/sizeof(fHandled[0]))) {
- if (fHandled[breakType] == 0) {
- fHandled[breakType] = new UnicodeSet();
- if (fHandled[breakType] == 0) {
- return;
- }
- }
- if (!fHandled[breakType]->contains(c)) {
- UErrorCode status = U_ZERO_ERROR;
- // Apply the entire script of the character.
- int32_t script = u_getIntPropertyValue(c, UCHAR_SCRIPT);
- fHandled[breakType]->applyIntPropertyValue(UCHAR_SCRIPT, script, status);
+UnhandledEngine::handleCharacter(UChar32 c) {
+ if (fHandled == nullptr) {
+ fHandled = new UnicodeSet();
+ if (fHandled == nullptr) {
+ return;
}
}
+ if (!fHandled->contains(c)) {
+ UErrorCode status = U_ZERO_ERROR;
+ // Apply the entire script of the character.
+ int32_t script = u_getIntPropertyValue(c, UCHAR_SCRIPT);
+ fHandled->applyIntPropertyValue(UCHAR_SCRIPT, script, status);
+ }
}
/*
U_NAMESPACE_END
U_CDECL_BEGIN
static void U_CALLCONV _deleteEngine(void *obj) {
- delete (const LanguageBreakEngine *) obj;
+ delete (const icu::LanguageBreakEngine *) obj;
}
U_CDECL_END
U_NAMESPACE_BEGIN
+static UMutex gBreakEngineMutex = U_MUTEX_INITIALIZER;
+
const LanguageBreakEngine *
-ICULanguageBreakFactory::getEngineFor(UChar32 c, int32_t breakType) {
- UBool needsInit;
- int32_t i;
+ICULanguageBreakFactory::getEngineFor(UChar32 c) {
const LanguageBreakEngine *lbe = NULL;
UErrorCode status = U_ZERO_ERROR;
- umtx_lock(NULL);
- needsInit = (UBool)(fEngines == NULL);
- if (!needsInit) {
- i = fEngines->size();
- while (--i >= 0) {
- lbe = (const LanguageBreakEngine *)(fEngines->elementAt(i));
- if (lbe != NULL && lbe->handles(c, breakType)) {
- break;
- }
- lbe = NULL;
- }
- }
- umtx_unlock(NULL);
-
- if (lbe != NULL) {
- return lbe;
- }
-
- if (needsInit) {
+ Mutex m(&gBreakEngineMutex);
+
+ if (fEngines == NULL) {
UStack *engines = new UStack(_deleteEngine, NULL, status);
- if (U_SUCCESS(status) && engines == NULL) {
- status = U_MEMORY_ALLOCATION_ERROR;
- }
- else if (U_FAILURE(status)) {
+ if (U_FAILURE(status) || engines == NULL) {
+ // Note: no way to return error code to caller.
delete engines;
- engines = NULL;
+ return NULL;
}
- else {
- umtx_lock(NULL);
- if (fEngines == NULL) {
- fEngines = engines;
- engines = NULL;
+ fEngines = engines;
+ } else {
+ int32_t i = fEngines->size();
+ while (--i >= 0) {
+ lbe = (const LanguageBreakEngine *)(fEngines->elementAt(i));
+ if (lbe != NULL && lbe->handles(c)) {
+ return lbe;
}
- umtx_unlock(NULL);
- delete engines;
}
}
- if (fEngines == NULL) {
- return NULL;
- }
-
- // We didn't find an engine the first time through, or there was no
- // stack. Create an engine.
- const LanguageBreakEngine *newlbe = loadEngineFor(c, breakType);
-
- // Now get the lock, and see if someone else has created it in the
- // meantime
- umtx_lock(NULL);
- i = fEngines->size();
- while (--i >= 0) {
- lbe = (const LanguageBreakEngine *)(fEngines->elementAt(i));
- if (lbe != NULL && lbe->handles(c, breakType)) {
- break;
- }
- lbe = NULL;
- }
- if (lbe == NULL && newlbe != NULL) {
- fEngines->push((void *)newlbe, status);
- lbe = newlbe;
- newlbe = NULL;
+ // We didn't find an engine. Create one.
+ lbe = loadEngineFor(c);
+ if (lbe != NULL) {
+ fEngines->push((void *)lbe, status);
}
- umtx_unlock(NULL);
-
- delete newlbe;
-
return lbe;
}
const LanguageBreakEngine *
-ICULanguageBreakFactory::loadEngineFor(UChar32 c, int32_t breakType) {
+ICULanguageBreakFactory::loadEngineFor(UChar32 c) {
UErrorCode status = U_ZERO_ERROR;
UScriptCode code = uscript_getScript(c, &status);
if (U_SUCCESS(status)) {
- const CompactTrieDictionary *dict = loadDictionaryFor(code, breakType);
- if (dict != NULL) {
+ DictionaryMatcher *m = loadDictionaryMatcherFor(code);
+ if (m != NULL) {
const LanguageBreakEngine *engine = NULL;
switch(code) {
case USCRIPT_THAI:
- engine = new ThaiBreakEngine(dict, status);
+ engine = new ThaiBreakEngine(m, status);
+ break;
+ case USCRIPT_LAO:
+ engine = new LaoBreakEngine(m, status);
break;
+ case USCRIPT_MYANMAR:
+ engine = new BurmeseBreakEngine(m, status);
+ break;
+ case USCRIPT_KHMER:
+ engine = new KhmerBreakEngine(m, status);
+ break;
+
+#if !UCONFIG_NO_NORMALIZATION
+ // CJK not available w/o normalization
+ case USCRIPT_HANGUL:
+ engine = new CjkBreakEngine(m, kKorean, status);
+ break;
+
+ // use same BreakEngine and dictionary for both Chinese and Japanese
+ case USCRIPT_HIRAGANA:
+ case USCRIPT_KATAKANA:
+ case USCRIPT_HAN:
+ engine = new CjkBreakEngine(m, kChineseJapanese, status);
+ break;
+#if 0
+ // TODO: Have to get some characters with script=common handled
+ // by CjkBreakEngine (e.g. U+309B). Simply subjecting
+ // them to CjkBreakEngine does not work. The engine has to
+ // special-case them.
+ case USCRIPT_COMMON:
+ {
+ UBlockCode block = ublock_getCode(code);
+ if (block == UBLOCK_HIRAGANA || block == UBLOCK_KATAKANA)
+ engine = new CjkBreakEngine(dict, kChineseJapanese, status);
+ break;
+ }
+#endif
+#endif
+
default:
break;
}
if (engine == NULL) {
- delete dict;
+ delete m;
}
else if (U_FAILURE(status)) {
delete engine;
return NULL;
}
-const CompactTrieDictionary *
-ICULanguageBreakFactory::loadDictionaryFor(UScriptCode script, int32_t breakType) {
+DictionaryMatcher *
+ICULanguageBreakFactory::loadDictionaryMatcherFor(UScriptCode script) {
UErrorCode status = U_ZERO_ERROR;
- // Open root from brkitr tree.
- char dictnbuff[256];
- char ext[4]={'\0'};
-
+ // open root from brkitr tree.
UResourceBundle *b = ures_open(U_ICUDATA_BRKITR, "", &status);
b = ures_getByKeyWithFallback(b, "dictionaries", b, &status);
- b = ures_getByKeyWithFallback(b, uscript_getShortName(script), b, &status);
int32_t dictnlength = 0;
- const UChar *dictfname = ures_getString(b, &dictnlength, &status);
- if (U_SUCCESS(status) && (size_t)dictnlength >= sizeof(dictnbuff)) {
- dictnlength = 0;
- status = U_BUFFER_OVERFLOW_ERROR;
+ const UChar *dictfname =
+ ures_getStringByKeyWithFallback(b, uscript_getShortName(script), &dictnlength, &status);
+ if (U_FAILURE(status)) {
+ ures_close(b);
+ return NULL;
}
- if (U_SUCCESS(status) && dictfname) {
- UChar* extStart=u_strchr(dictfname, 0x002e);
- int len = 0;
- if(extStart!=NULL){
- len = extStart-dictfname;
- u_UCharsToChars(extStart+1, ext, sizeof(ext)); // nul terminates the buff
- u_UCharsToChars(dictfname, dictnbuff, len);
- }
- dictnbuff[len]=0; // nul terminate
+ CharString dictnbuf;
+ CharString ext;
+ const UChar *extStart = u_memrchr(dictfname, 0x002e, dictnlength); // last dot
+ if (extStart != NULL) {
+ int32_t len = (int32_t)(extStart - dictfname);
+ ext.appendInvariantChars(UnicodeString(FALSE, extStart + 1, dictnlength - len - 1), status);
+ dictnlength = len;
}
+ dictnbuf.appendInvariantChars(UnicodeString(FALSE, dictfname, dictnlength), status);
ures_close(b);
- UDataMemory *file = udata_open(U_ICUDATA_BRKITR, ext, dictnbuff, &status);
+
+ UDataMemory *file = udata_open(U_ICUDATA_BRKITR, ext.data(), dictnbuf.data(), &status);
if (U_SUCCESS(status)) {
- const CompactTrieDictionary *dict = new CompactTrieDictionary(
- file, status);
- if (U_SUCCESS(status) && dict == NULL) {
- status = U_MEMORY_ALLOCATION_ERROR;
+ // build trie
+ const uint8_t *data = (const uint8_t *)udata_getMemory(file);
+ const int32_t *indexes = (const int32_t *)data;
+ const int32_t offset = indexes[DictionaryData::IX_STRING_TRIE_OFFSET];
+ const int32_t trieType = indexes[DictionaryData::IX_TRIE_TYPE] & DictionaryData::TRIE_TYPE_MASK;
+ DictionaryMatcher *m = NULL;
+ if (trieType == DictionaryData::TRIE_TYPE_BYTES) {
+ const int32_t transform = indexes[DictionaryData::IX_TRANSFORM];
+ const char *characters = (const char *)(data + offset);
+ m = new BytesDictionaryMatcher(characters, transform, file);
+ }
+ else if (trieType == DictionaryData::TRIE_TYPE_UCHARS) {
+ const UChar *characters = (const UChar *)(data + offset);
+ m = new UCharsDictionaryMatcher(characters, file);
}
- if (U_FAILURE(status)) {
- delete dict;
- dict = NULL;
+ if (m == NULL) {
+ // no matcher exists to take ownership - either we are an invalid
+ // type or memory allocation failed
+ udata_close(file);
}
- return dict;
+ return m;
+ } else if (dictfname != NULL) {
+ // we don't have a dictionary matcher.
+ // returning NULL here will cause us to fail to find a dictionary break engine, as expected
+ status = U_ZERO_ERROR;
+ return NULL;
}
return NULL;
}
projects / apple / icu.git / blobdiff