+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
-* Copyright (C) 1996-2008, International Business Machines
+* Copyright (C) 1996-2016, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* file name: ucol_res.cpp
-* encoding: US-ASCII
+* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* 03/01/2001 synwee Added maxexpansion functionality.
* 03/16/2001 weiv Collation framework is rewritten in C and made UCA compliant
* 12/08/2004 grhoten Split part of ucol.cpp into ucol_res.cpp
+* 2012-2014 markus Rewritten in C++ again.
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_COLLATION
-#include "unicode/uloc.h"
+
#include "unicode/coll.h"
+#include "unicode/localpointer.h"
+#include "unicode/locid.h"
#include "unicode/tblcoll.h"
-#include "unicode/caniter.h"
-#include "unicode/ustring.h"
-
-#include "ucol_bld.h"
-#include "ucol_imp.h"
-#include "ucol_tok.h"
-#include "ucol_elm.h"
-#include "uresimp.h"
-#include "ustr_imp.h"
+#include "unicode/ucol.h"
+#include "unicode/uloc.h"
+#include "unicode/unistr.h"
+#include "unicode/ures.h"
+#include "charstr.h"
+#include "cmemory.h"
#include "cstring.h"
-#include "umutex.h"
+#include "collationdatareader.h"
+#include "collationroot.h"
+#include "collationtailoring.h"
+#include "resource.h"
+#include "putilimp.h"
+#include "uassert.h"
#include "ucln_in.h"
+#include "ucol_imp.h"
+#include "uenumimp.h"
+#include "ulist.h"
+#include "umutex.h"
+#include "unifiedcache.h"
+#include "uresimp.h"
#include "ustrenum.h"
-#include "putilimp.h"
#include "utracimp.h"
-#include "cmemory.h"
-U_NAMESPACE_USE
+U_NAMESPACE_BEGIN
+
+namespace {
-// static UCA. There is only one. Collators don't use it.
-// It is referenced only in ucol_initUCA and ucol_cleanup
-static UCollator* _staticUCA = NULL;
-// static pointer to udata memory. Inited in ucol_initUCA
-// used for cleanup in ucol_cleanup
-static UDataMemory* UCA_DATA_MEM = NULL;
+static const UChar *rootRules = NULL;
+static int32_t rootRulesLength = 0;
+static UResourceBundle *rootBundle = NULL;
+static UInitOnce gInitOnce = U_INITONCE_INITIALIZER;
+
+} // namespace
U_CDECL_BEGIN
+
static UBool U_CALLCONV
-ucol_res_cleanup(void)
-{
- if (UCA_DATA_MEM) {
- udata_close(UCA_DATA_MEM);
- UCA_DATA_MEM = NULL;
- }
- if (_staticUCA) {
- ucol_close(_staticUCA);
- _staticUCA = NULL;
- }
+ucol_res_cleanup() {
+ rootRules = NULL;
+ rootRulesLength = 0;
+ ures_close(rootBundle);
+ rootBundle = NULL;
+ gInitOnce.reset();
return TRUE;
}
-static UBool U_CALLCONV
-isAcceptableUCA(void * /*context*/,
- const char * /*type*/, const char * /*name*/,
- const UDataInfo *pInfo){
- /* context, type & name are intentionally not used */
- if( pInfo->size>=20 &&
- pInfo->isBigEndian==U_IS_BIG_ENDIAN &&
- pInfo->charsetFamily==U_CHARSET_FAMILY &&
- pInfo->dataFormat[0]==UCA_DATA_FORMAT_0 && /* dataFormat="UCol" */
- pInfo->dataFormat[1]==UCA_DATA_FORMAT_1 &&
- pInfo->dataFormat[2]==UCA_DATA_FORMAT_2 &&
- pInfo->dataFormat[3]==UCA_DATA_FORMAT_3 &&
- pInfo->formatVersion[0]==UCA_FORMAT_VERSION_0 &&
- pInfo->formatVersion[1]>=UCA_FORMAT_VERSION_1// &&
- //pInfo->formatVersion[1]==UCA_FORMAT_VERSION_1 &&
- //pInfo->formatVersion[2]==UCA_FORMAT_VERSION_2 && // Too harsh
- //pInfo->formatVersion[3]==UCA_FORMAT_VERSION_3 && // Too harsh
- ) {
- UVersionInfo UCDVersion;
- u_getUnicodeVersion(UCDVersion);
- return (UBool)(pInfo->dataVersion[0]==UCDVersion[0]
- && pInfo->dataVersion[1]==UCDVersion[1]);
- //&& pInfo->dataVersion[2]==ucaDataInfo.dataVersion[2]
- //&& pInfo->dataVersion[3]==ucaDataInfo.dataVersion[3]);
- } else {
- return FALSE;
- }
+void U_CALLCONV
+CollationLoader::loadRootRules(UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return; }
+ rootBundle = ures_open(U_ICUDATA_COLL, kRootLocaleName, &errorCode);
+ if(U_FAILURE(errorCode)) { return; }
+ rootRules = ures_getStringByKey(rootBundle, "UCARules", &rootRulesLength, &errorCode);
+ if(U_FAILURE(errorCode)) {
+ ures_close(rootBundle);
+ rootBundle = NULL;
+ return;
+ }
+ ucln_i18n_registerCleanup(UCLN_I18N_UCOL_RES, ucol_res_cleanup);
}
-U_CDECL_END
-/* do not close UCA returned by ucol_initUCA! */
-UCollator *
-ucol_initUCA(UErrorCode *status) {
- if(U_FAILURE(*status)) {
- return NULL;
- }
- UBool needsInit;
- UMTX_CHECK(NULL, (_staticUCA == NULL), needsInit);
-
- if(needsInit) {
- UDataMemory *result = udata_openChoice(NULL, UCA_DATA_TYPE, UCA_DATA_NAME, isAcceptableUCA, NULL, status);
-
- if(U_SUCCESS(*status)){
- UCollator *newUCA = ucol_initCollator((const UCATableHeader *)udata_getMemory(result), NULL, NULL, status);
- if(U_SUCCESS(*status)){
- umtx_lock(NULL);
- if(_staticUCA == NULL) {
- _staticUCA = newUCA;
- newUCA = NULL;
- UCA_DATA_MEM = result;
- result = NULL;
- }
- umtx_unlock(NULL);
+U_CDECL_END
- ucln_i18n_registerCleanup(UCLN_I18N_UCOL_RES, ucol_res_cleanup);
- if(newUCA != NULL) {
- ucol_close(newUCA);
- udata_close(result);
- }
- // Initalize variables for implicit generation
- uprv_uca_initImplicitConstants(status);
- }else{
- ucol_close(newUCA);
- udata_close(result);
- }
- }
- else {
- udata_close(result);
- }
+void
+CollationLoader::appendRootRules(UnicodeString &s) {
+ UErrorCode errorCode = U_ZERO_ERROR;
+ umtx_initOnce(gInitOnce, CollationLoader::loadRootRules, errorCode);
+ if(U_SUCCESS(errorCode)) {
+ s.append(rootRules, rootRulesLength);
}
- return _staticUCA;
}
-U_CAPI void U_EXPORT2
-ucol_forgetUCA(void)
-{
- _staticUCA = NULL;
- UCA_DATA_MEM = NULL;
+void
+CollationLoader::loadRules(const char *localeID, const char *collationType,
+ UnicodeString &rules, UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return; }
+ U_ASSERT(collationType != NULL && *collationType != 0);
+ // Copy the type for lowercasing.
+ char type[16];
+ int32_t typeLength = uprv_strlen(collationType);
+ if(typeLength >= UPRV_LENGTHOF(type)) {
+ errorCode = U_ILLEGAL_ARGUMENT_ERROR;
+ return;
+ }
+ uprv_memcpy(type, collationType, typeLength + 1);
+ T_CString_toLowerCase(type);
+
+ LocalUResourceBundlePointer bundle(ures_open(U_ICUDATA_COLL, localeID, &errorCode));
+ LocalUResourceBundlePointer collations(
+ ures_getByKey(bundle.getAlias(), "collations", NULL, &errorCode));
+ LocalUResourceBundlePointer data(
+ ures_getByKeyWithFallback(collations.getAlias(), type, NULL, &errorCode));
+ int32_t length;
+ const UChar *s = ures_getStringByKey(data.getAlias(), "Sequence", &length, &errorCode);
+ if(U_FAILURE(errorCode)) { return; }
+
+ // No string pointer aliasing so that we need not hold onto the resource bundle.
+ rules.setTo(s, length);
+ if(rules.isBogus()) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
+ }
}
-/****************************************************************************/
-/* Following are the open/close functions */
-/* */
-/****************************************************************************/
-static UCollator*
-tryOpeningFromRules(UResourceBundle *collElem, UErrorCode *status) {
- int32_t rulesLen = 0;
- const UChar *rules = ures_getStringByKey(collElem, "Sequence", &rulesLen, status);
- return ucol_openRules(rules, rulesLen, UCOL_DEFAULT, UCOL_DEFAULT, NULL, status);
+template<> U_I18N_API
+const CollationCacheEntry *
+LocaleCacheKey<CollationCacheEntry>::createObject(const void *creationContext,
+ UErrorCode &errorCode) const {
+ CollationLoader *loader =
+ reinterpret_cast<CollationLoader *>(
+ const_cast<void *>(creationContext));
+ return loader->createCacheEntry(errorCode);
}
+const CollationCacheEntry *
+CollationLoader::loadTailoring(const Locale &locale, UErrorCode &errorCode) {
+ const CollationCacheEntry *rootEntry = CollationRoot::getRootCacheEntry(errorCode);
+ if(U_FAILURE(errorCode)) { return NULL; }
+ const char *name = locale.getName();
+ if(*name == 0 || uprv_strcmp(name, "root") == 0) {
-// API in ucol_imp.h
-
-U_CFUNC UCollator*
-ucol_open_internal(const char *loc,
- UErrorCode *status)
-{
- UErrorCode intStatus = U_ZERO_ERROR;
- const UCollator* UCA = ucol_initUCA(status);
-
- /* New version */
- if(U_FAILURE(*status)) return 0;
-
-
-
- UCollator *result = NULL;
- UResourceBundle *b = ures_open(U_ICUDATA_COLL, loc, status);
-
- /* we try to find stuff from keyword */
- UResourceBundle *collations = ures_getByKey(b, "collations", NULL, status);
- UResourceBundle *collElem = NULL;
- char keyBuffer[256];
- // if there is a keyword, we pick it up and try to get elements
- if(!uloc_getKeywordValue(loc, "collation", keyBuffer, 256, status)) {
- // no keyword. we try to find the default setting, which will give us the keyword value
- intStatus = U_ZERO_ERROR;
- // finding default value does not affect collation fallback status
- UResourceBundle *defaultColl = ures_getByKeyWithFallback(collations, "default", NULL, &intStatus);
- if(U_SUCCESS(intStatus)) {
- int32_t defaultKeyLen = 0;
- const UChar *defaultKey = ures_getString(defaultColl, &defaultKeyLen, &intStatus);
- u_UCharsToChars(defaultKey, keyBuffer, defaultKeyLen);
- keyBuffer[defaultKeyLen] = 0;
- } else {
- *status = U_INTERNAL_PROGRAM_ERROR;
- return NULL;
- }
- ures_close(defaultColl);
+ // Have to add a ref.
+ rootEntry->addRef();
+ return rootEntry;
}
- collElem = ures_getByKeyWithFallback(collations, keyBuffer, collations, status);
- collations = NULL; // We just reused the collations object as collElem.
- UResourceBundle *binary = NULL;
-
- if(*status == U_MISSING_RESOURCE_ERROR) { /* We didn't find the tailoring data, we fallback to the UCA */
- *status = U_USING_DEFAULT_WARNING;
- result = ucol_initCollator(UCA->image, result, UCA, status);
- if (U_FAILURE(*status)) {
- goto clean;
- }
- // if we use UCA, real locale is root
- ures_close(b);
- b = ures_open(U_ICUDATA_COLL, "", status);
- ures_close(collElem);
- collElem = ures_open(U_ICUDATA_COLL, "", status);
- if(U_FAILURE(*status)) {
- goto clean;
- }
- result->hasRealData = FALSE;
- } else if(U_SUCCESS(*status)) {
- intStatus = U_ZERO_ERROR;
+ // Clear warning codes before loading where they get cached.
+ errorCode = U_ZERO_ERROR;
+ CollationLoader loader(rootEntry, locale, errorCode);
- binary = ures_getByKey(collElem, "%%CollationBin", NULL, &intStatus);
+ // getCacheEntry adds a ref for us.
+ return loader.getCacheEntry(errorCode);
+}
- if(intStatus == U_MISSING_RESOURCE_ERROR) { /* we didn't find the binary image, we should use the rules */
- binary = NULL;
- result = tryOpeningFromRules(collElem, status);
- if(U_FAILURE(*status)) {
- goto clean;
- }
- } else if(U_SUCCESS(*status)) { /* otherwise, we'll pick a collation data that exists */
- int32_t len = 0;
- const uint8_t *inData = ures_getBinary(binary, &len, status);
- UCATableHeader *colData = (UCATableHeader *)inData;
- if(uprv_memcmp(colData->UCAVersion, UCA->image->UCAVersion, sizeof(UVersionInfo)) != 0 ||
- uprv_memcmp(colData->UCDVersion, UCA->image->UCDVersion, sizeof(UVersionInfo)) != 0 ||
- colData->version[0] != UCOL_BUILDER_VERSION)
- {
- *status = U_DIFFERENT_UCA_VERSION;
- result = tryOpeningFromRules(collElem, status);
- } else {
- if(U_FAILURE(*status)){
- goto clean;
- }
- if((uint32_t)len > (paddedsize(sizeof(UCATableHeader)) + paddedsize(sizeof(UColOptionSet)))) {
- result = ucol_initCollator((const UCATableHeader *)inData, result, UCA, status);
- if(U_FAILURE(*status)){
- goto clean;
- }
- result->hasRealData = TRUE;
- } else {
- result = ucol_initCollator(UCA->image, result, UCA, status);
- ucol_setOptionsFromHeader(result, (UColOptionSet *)(inData+((const UCATableHeader *)inData)->options), status);
- if(U_FAILURE(*status)){
- goto clean;
- }
- result->hasRealData = FALSE;
- }
- result->freeImageOnClose = FALSE;
- }
+CollationLoader::CollationLoader(const CollationCacheEntry *re, const Locale &requested,
+ UErrorCode &errorCode)
+ : cache(UnifiedCache::getInstance(errorCode)), rootEntry(re),
+ validLocale(re->validLocale), locale(requested),
+ typesTried(0), typeFallback(FALSE),
+ bundle(NULL), collations(NULL), data(NULL) {
+ type[0] = 0;
+ defaultType[0] = 0;
+ if(U_FAILURE(errorCode)) { return; }
+
+ // Canonicalize the locale ID: Ignore all irrelevant keywords.
+ const char *baseName = locale.getBaseName();
+ if(uprv_strcmp(locale.getName(), baseName) != 0) {
+ locale = Locale(baseName);
+
+ // Fetch the collation type from the locale ID.
+ int32_t typeLength = requested.getKeywordValue("collation",
+ type, UPRV_LENGTHOF(type) - 1, errorCode);
+ if(U_FAILURE(errorCode)) {
+ errorCode = U_ILLEGAL_ARGUMENT_ERROR;
+ return;
+ }
+ type[typeLength] = 0; // in case of U_NOT_TERMINATED_WARNING
+ if(typeLength == 0) {
+ // No collation type.
+ } else if(uprv_stricmp(type, "default") == 0) {
+ // Ignore "default" (case-insensitive).
+ type[0] = 0;
+ } else {
+ // Copy the collation type.
+ T_CString_toLowerCase(type);
+ locale.setKeywordValue("collation", type, errorCode);
}
- intStatus = U_ZERO_ERROR;
- result->rules = ures_getStringByKey(collElem, "Sequence", &result->rulesLength, &intStatus);
- result->freeRulesOnClose = FALSE;
- } else { /* There is another error, and we're just gonna clean up */
- goto clean;
- }
-
- intStatus = U_ZERO_ERROR;
- result->ucaRules = ures_getStringByKey(b,"UCARules",NULL,&intStatus);
-
- if(loc == NULL) {
- loc = ures_getLocale(b, status);
- }
- result->requestedLocale = uprv_strdup(loc);
- /* test for NULL */
- if (result->requestedLocale == NULL) {
- *status = U_MEMORY_ALLOCATION_ERROR;
- goto clean;
- }
- loc = ures_getLocale(collElem, status);
- result->actualLocale = uprv_strdup(loc);
- /* test for NULL */
- if (result->actualLocale == NULL) {
- *status = U_MEMORY_ALLOCATION_ERROR;
- goto clean;
- }
- loc = ures_getLocale(b, status);
- result->validLocale = uprv_strdup(loc);
- /* test for NULL */
- if (result->validLocale == NULL) {
- *status = U_MEMORY_ALLOCATION_ERROR;
- goto clean;
}
-
- ures_close(b);
- ures_close(collElem);
- ures_close(binary);
- return result;
-
-clean:
- ures_close(b);
- ures_close(collElem);
- ures_close(binary);
- ucol_close(result);
- return NULL;
}
-U_CAPI UCollator*
-ucol_open(const char *loc,
- UErrorCode *status)
-{
- U_NAMESPACE_USE
-
- UTRACE_ENTRY_OC(UTRACE_UCOL_OPEN);
- UTRACE_DATA1(UTRACE_INFO, "locale = \"%s\"", loc);
- UCollator *result = NULL;
+CollationLoader::~CollationLoader() {
+ ures_close(data);
+ ures_close(collations);
+ ures_close(bundle);
+}
- u_init(status);
-#if !UCONFIG_NO_SERVICE
- result = Collator::createUCollator(loc, status);
- if (result == NULL)
-#endif
- {
- result = ucol_open_internal(loc, status);
+const CollationCacheEntry *
+CollationLoader::createCacheEntry(UErrorCode &errorCode) {
+ // This is a linear lookup and fallback flow turned into a state machine.
+ // Most local variables have been turned into instance fields.
+ // In a cache miss, cache.get() calls CacheKey::createObject(),
+ // which means that we progress via recursion.
+ // loadFromCollations() will recurse to itself as well for collation type fallback.
+ if(bundle == NULL) {
+ return loadFromLocale(errorCode);
+ } else if(collations == NULL) {
+ return loadFromBundle(errorCode);
+ } else if(data == NULL) {
+ return loadFromCollations(errorCode);
+ } else {
+ return loadFromData(errorCode);
}
- UTRACE_EXIT_PTR_STATUS(result, *status);
- return result;
}
-U_CAPI UCollator* U_EXPORT2
-ucol_openRules( const UChar *rules,
- int32_t rulesLength,
- UColAttributeValue normalizationMode,
- UCollationStrength strength,
- UParseError *parseError,
- UErrorCode *status)
-{
- UColTokenParser src;
- UColAttributeValue norm;
- UParseError tErr;
-
- if(status == NULL || U_FAILURE(*status)){
- return 0;
+const CollationCacheEntry *
+CollationLoader::loadFromLocale(UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return NULL; }
+ U_ASSERT(bundle == NULL);
+ bundle = ures_openNoDefault(U_ICUDATA_COLL, locale.getBaseName(), &errorCode);
+ if(errorCode == U_MISSING_RESOURCE_ERROR) {
+ errorCode = U_USING_DEFAULT_WARNING;
+
+ // Have to add that ref that we promise.
+ rootEntry->addRef();
+ return rootEntry;
+ }
+ Locale requestedLocale(locale);
+ const char *vLocale = ures_getLocaleByType(bundle, ULOC_ACTUAL_LOCALE, &errorCode);
+ if(U_FAILURE(errorCode)) { return NULL; }
+ locale = validLocale = Locale(vLocale); // no type until loadFromCollations()
+ if(type[0] != 0) {
+ locale.setKeywordValue("collation", type, errorCode);
+ }
+ if(locale != requestedLocale) {
+ return getCacheEntry(errorCode);
+ } else {
+ return loadFromBundle(errorCode);
}
+}
- u_init(status);
- if (U_FAILURE(*status)) {
- return NULL;
+const CollationCacheEntry *
+CollationLoader::loadFromBundle(UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return NULL; }
+ U_ASSERT(collations == NULL);
+ // There are zero or more tailorings in the collations table.
+ collations = ures_getByKey(bundle, "collations", NULL, &errorCode);
+ if(errorCode == U_MISSING_RESOURCE_ERROR) {
+ errorCode = U_USING_DEFAULT_WARNING;
+ // Return the root tailoring with the validLocale, without collation type.
+ return makeCacheEntryFromRoot(validLocale, errorCode);
}
+ if(U_FAILURE(errorCode)) { return NULL; }
- if(rules == NULL || rulesLength < -1) {
- *status = U_ILLEGAL_ARGUMENT_ERROR;
- return 0;
+ // Fetch the default type from the data.
+ {
+ UErrorCode internalErrorCode = U_ZERO_ERROR;
+ LocalUResourceBundlePointer def(
+ ures_getByKeyWithFallback(collations, "default", NULL, &internalErrorCode));
+ int32_t length;
+ const UChar *s = ures_getString(def.getAlias(), &length, &internalErrorCode);
+ if(U_SUCCESS(internalErrorCode) && 0 < length && length < UPRV_LENGTHOF(defaultType)) {
+ u_UCharsToChars(s, defaultType, length + 1);
+ } else {
+ uprv_strcpy(defaultType, "standard");
+ }
}
- if(rulesLength == -1) {
- rulesLength = u_strlen(rules);
+ // Record which collation types we have looked for already,
+ // so that we do not deadlock in the cache.
+ //
+ // If there is no explicit type, then we look in the cache
+ // for the entry with the default type.
+ // If the explicit type is the default type, then we do not look in the cache
+ // for the entry with an empty type.
+ // Otherwise, two concurrent requests with opposite fallbacks would deadlock each other.
+ // Also, it is easier to always enter the next method with a non-empty type.
+ if(type[0] == 0) {
+ uprv_strcpy(type, defaultType);
+ typesTried |= TRIED_DEFAULT;
+ if(uprv_strcmp(type, "search") == 0) {
+ typesTried |= TRIED_SEARCH;
+ }
+ if(uprv_strcmp(type, "standard") == 0) {
+ typesTried |= TRIED_STANDARD;
+ }
+ locale.setKeywordValue("collation", type, errorCode);
+ return getCacheEntry(errorCode);
+ } else {
+ if(uprv_strcmp(type, defaultType) == 0) {
+ typesTried |= TRIED_DEFAULT;
+ }
+ if(uprv_strcmp(type, "search") == 0) {
+ typesTried |= TRIED_SEARCH;
+ }
+ if(uprv_strcmp(type, "standard") == 0) {
+ typesTried |= TRIED_STANDARD;
+ }
+ return loadFromCollations(errorCode);
}
+}
- if(parseError == NULL){
- parseError = &tErr;
+const CollationCacheEntry *
+CollationLoader::loadFromCollations(UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return NULL; }
+ U_ASSERT(data == NULL);
+ // Load the collations/type tailoring, with type fallback.
+ LocalUResourceBundlePointer localData(
+ ures_getByKeyWithFallback(collations, type, NULL, &errorCode));
+ int32_t typeLength = uprv_strlen(type);
+ if(errorCode == U_MISSING_RESOURCE_ERROR) {
+ errorCode = U_USING_DEFAULT_WARNING;
+ typeFallback = TRUE;
+ if((typesTried & TRIED_SEARCH) == 0 &&
+ typeLength > 6 && uprv_strncmp(type, "search", 6) == 0) {
+ // fall back from something like "searchjl" to "search"
+ typesTried |= TRIED_SEARCH;
+ type[6] = 0;
+ } else if((typesTried & TRIED_DEFAULT) == 0) {
+ // fall back to the default type
+ typesTried |= TRIED_DEFAULT;
+ uprv_strcpy(type, defaultType);
+ } else if((typesTried & TRIED_STANDARD) == 0) {
+ // fall back to the "standard" type
+ typesTried |= TRIED_STANDARD;
+ uprv_strcpy(type, "standard");
+ } else {
+ // Return the root tailoring with the validLocale, without collation type.
+ return makeCacheEntryFromRoot(validLocale, errorCode);
+ }
+ locale.setKeywordValue("collation", type, errorCode);
+ return getCacheEntry(errorCode);
+ }
+ if(U_FAILURE(errorCode)) { return NULL; }
+
+ data = localData.orphan();
+ const char *actualLocale = ures_getLocaleByType(data, ULOC_ACTUAL_LOCALE, &errorCode);
+ if(U_FAILURE(errorCode)) { return NULL; }
+ const char *vLocale = validLocale.getBaseName();
+ UBool actualAndValidLocalesAreDifferent = uprv_strcmp(actualLocale, vLocale) != 0;
+
+ // Set the collation types on the informational locales,
+ // except when they match the default types (for brevity and backwards compatibility).
+ // For the valid locale, suppress the default type.
+ if(uprv_strcmp(type, defaultType) != 0) {
+ validLocale.setKeywordValue("collation", type, errorCode);
+ if(U_FAILURE(errorCode)) { return NULL; }
+ }
+
+ // Is this the same as the root collator? If so, then use that instead.
+ if((*actualLocale == 0 || uprv_strcmp(actualLocale, "root") == 0) &&
+ uprv_strcmp(type, "standard") == 0) {
+ if(typeFallback) {
+ errorCode = U_USING_DEFAULT_WARNING;
+ }
+ return makeCacheEntryFromRoot(validLocale, errorCode);
}
- switch(normalizationMode) {
- case UCOL_OFF:
- case UCOL_ON:
- case UCOL_DEFAULT:
- norm = normalizationMode;
- break;
- default:
- *status = U_ILLEGAL_ARGUMENT_ERROR;
- return 0;
+ locale = Locale(actualLocale);
+ if(actualAndValidLocalesAreDifferent) {
+ locale.setKeywordValue("collation", type, errorCode);
+ const CollationCacheEntry *entry = getCacheEntry(errorCode);
+ return makeCacheEntry(validLocale, entry, errorCode);
+ } else {
+ return loadFromData(errorCode);
}
+}
- UCollator *result = NULL;
- UCATableHeader *table = NULL;
- UCollator *UCA = ucol_initUCA(status);
-
- if(U_FAILURE(*status)){
+const CollationCacheEntry *
+CollationLoader::loadFromData(UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return NULL; }
+ LocalPointer<CollationTailoring> t(new CollationTailoring(rootEntry->tailoring->settings));
+ if(t.isNull() || t->isBogus()) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
- ucol_tok_initTokenList(&src, rules, rulesLength, UCA, status);
- ucol_tok_assembleTokenList(&src,parseError, status);
+ // deserialize
+ LocalUResourceBundlePointer binary(ures_getByKey(data, "%%CollationBin", NULL, &errorCode));
+ // Note: U_MISSING_RESOURCE_ERROR --> The old code built from rules if available
+ // but that created undesirable dependencies.
+ int32_t length;
+ const uint8_t *inBytes = ures_getBinary(binary.getAlias(), &length, &errorCode);
+ CollationDataReader::read(rootEntry->tailoring, inBytes, length, *t, errorCode);
+ // Note: U_COLLATOR_VERSION_MISMATCH --> The old code built from rules if available
+ // but that created undesirable dependencies.
+ if(U_FAILURE(errorCode)) { return NULL; }
- if(U_FAILURE(*status)) {
- /* if status is U_ILLEGAL_ARGUMENT_ERROR, src->current points at the offending option */
- /* if status is U_INVALID_FORMAT_ERROR, src->current points after the problematic part of the rules */
- /* so something might be done here... or on lower level */
-#ifdef UCOL_DEBUG
- if(*status == U_ILLEGAL_ARGUMENT_ERROR) {
- fprintf(stderr, "bad option starting at offset %i\n", src.current-src.source);
- } else {
- fprintf(stderr, "invalid rule just before offset %i\n", src.current-src.source);
- }
-#endif
- goto cleanup;
- }
-
- if(src.resultLen > 0 || src.removeSet != NULL) { /* we have a set of rules, let's make something of it */
- /* also, if we wanted to remove some contractions, we should make a tailoring */
- table = ucol_assembleTailoringTable(&src, status);
- if(U_SUCCESS(*status)) {
- // builder version
- table->version[0] = UCOL_BUILDER_VERSION;
- // no tailoring information on this level
- table->version[1] = table->version[2] = table->version[3] = 0;
- // set UCD version
- u_getUnicodeVersion(table->UCDVersion);
- // set UCA version
- uprv_memcpy(table->UCAVersion, UCA->image->UCAVersion, sizeof(UVersionInfo));
- result = ucol_initCollator(table, 0, UCA, status);
- if (U_FAILURE(*status)) {
- goto cleanup;
- }
- result->hasRealData = TRUE;
- result->freeImageOnClose = TRUE;
- }
- } else { /* no rules, but no error either */
- // must be only options
- // We will init the collator from UCA
- result = ucol_initCollator(UCA->image, 0, UCA, status);
- // Check for null result
- if (U_FAILURE(*status)) {
- goto cleanup;
- }
- // And set only the options
- UColOptionSet *opts = (UColOptionSet *)uprv_malloc(sizeof(UColOptionSet));
- /* test for NULL */
- if (opts == NULL) {
- *status = U_MEMORY_ALLOCATION_ERROR;
- goto cleanup;
+ // Try to fetch the optional rules string.
+ {
+ UErrorCode internalErrorCode = U_ZERO_ERROR;
+ int32_t length;
+ const UChar *s = ures_getStringByKey(data, "Sequence", &length,
+ &internalErrorCode);
+ if(U_SUCCESS(internalErrorCode)) {
+ t->rules.setTo(TRUE, s, length);
}
- uprv_memcpy(opts, src.opts, sizeof(UColOptionSet));
- ucol_setOptionsFromHeader(result, opts, status);
- result->freeOptionsOnClose = TRUE;
- result->hasRealData = FALSE;
- result->freeImageOnClose = FALSE;
}
- if(U_SUCCESS(*status)) {
- UChar *newRules;
- result->dataVersion[0] = UCOL_BUILDER_VERSION;
- if(rulesLength > 0) {
- newRules = (UChar *)uprv_malloc((rulesLength+1)*U_SIZEOF_UCHAR);
- /* test for NULL */
- if (newRules == NULL) {
- *status = U_MEMORY_ALLOCATION_ERROR;
- goto cleanup;
- }
- uprv_memcpy(newRules, rules, rulesLength*U_SIZEOF_UCHAR);
- newRules[rulesLength]=0;
- result->rules = newRules;
- result->rulesLength = rulesLength;
- result->freeRulesOnClose = TRUE;
- }
- result->ucaRules = NULL;
- result->actualLocale = NULL;
- result->validLocale = NULL;
- result->requestedLocale = NULL;
- ucol_setAttribute(result, UCOL_STRENGTH, strength, status);
- ucol_setAttribute(result, UCOL_NORMALIZATION_MODE, norm, status);
- } else {
-cleanup:
- if(result != NULL) {
- ucol_close(result);
+ const char *actualLocale = locale.getBaseName(); // without type
+ const char *vLocale = validLocale.getBaseName();
+ UBool actualAndValidLocalesAreDifferent = uprv_strcmp(actualLocale, vLocale) != 0;
+
+ // For the actual locale, suppress the default type *according to the actual locale*.
+ // For example, zh has default=pinyin and contains all of the Chinese tailorings.
+ // zh_Hant has default=stroke but has no other data.
+ // For the valid locale "zh_Hant" we need to suppress stroke.
+ // For the actual locale "zh" we need to suppress pinyin instead.
+ if(actualAndValidLocalesAreDifferent) {
+ // Opening a bundle for the actual locale should always succeed.
+ LocalUResourceBundlePointer actualBundle(
+ ures_open(U_ICUDATA_COLL, actualLocale, &errorCode));
+ if(U_FAILURE(errorCode)) { return NULL; }
+ UErrorCode internalErrorCode = U_ZERO_ERROR;
+ LocalUResourceBundlePointer def(
+ ures_getByKeyWithFallback(actualBundle.getAlias(), "collations/default", NULL,
+ &internalErrorCode));
+ int32_t length;
+ const UChar *s = ures_getString(def.getAlias(), &length, &internalErrorCode);
+ if(U_SUCCESS(internalErrorCode) && length < UPRV_LENGTHOF(defaultType)) {
+ u_UCharsToChars(s, defaultType, length + 1);
} else {
- if(table != NULL) {
- uprv_free(table);
- }
+ uprv_strcpy(defaultType, "standard");
}
- result = NULL;
}
+ t->actualLocale = locale;
+ if(uprv_strcmp(type, defaultType) != 0) {
+ t->actualLocale.setKeywordValue("collation", type, errorCode);
+ } else if(uprv_strcmp(locale.getName(), locale.getBaseName()) != 0) {
+ // Remove the collation keyword if it was set.
+ t->actualLocale.setKeywordValue("collation", NULL, errorCode);
+ }
+ if(U_FAILURE(errorCode)) { return NULL; }
- ucol_tok_closeTokenList(&src);
-
- return result;
-}
-
-U_CAPI int32_t U_EXPORT2
-ucol_getRulesEx(const UCollator *coll, UColRuleOption delta, UChar *buffer, int32_t bufferLen) {
- UErrorCode status = U_ZERO_ERROR;
- int32_t len = 0;
- int32_t UCAlen = 0;
- const UChar* ucaRules = 0;
- const UChar *rules = ucol_getRules(coll, &len);
- if(delta == UCOL_FULL_RULES) {
- /* take the UCA rules and append real rules at the end */
- /* UCA rules will be probably coming from the root RB */
- ucaRules = coll->ucaRules;
- if (ucaRules) {
- UCAlen = u_strlen(ucaRules);
- }
- /*
- ucaRules = ures_getStringByKey(coll->rb,"UCARules",&UCAlen,&status);
- UResourceBundle* cresb = ures_getByKeyWithFallback(coll->rb, "collations", NULL, &status);
- UResourceBundle* uca = ures_getByKeyWithFallback(cresb, "UCA", NULL, &status);
- ucaRules = ures_getStringByKey(uca,"Sequence",&UCAlen,&status);
- ures_close(uca);
- ures_close(cresb);
- */
- }
- if(U_FAILURE(status)) {
- return 0;
- }
- if(buffer!=0 && bufferLen>0){
- *buffer=0;
- if(UCAlen > 0) {
- u_memcpy(buffer, ucaRules, uprv_min(UCAlen, bufferLen));
- }
- if(len > 0 && bufferLen > UCAlen) {
- u_memcpy(buffer+UCAlen, rules, uprv_min(len, bufferLen-UCAlen));
- }
+ if(typeFallback) {
+ errorCode = U_USING_DEFAULT_WARNING;
}
- return u_terminateUChars(buffer, bufferLen, len+UCAlen, &status);
+ t->bundle = bundle;
+ bundle = NULL;
+ const CollationCacheEntry *entry = new CollationCacheEntry(validLocale, t.getAlias());
+ if(entry == NULL) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
+ } else {
+ t.orphan();
+ }
+ // Have to add that reference that we promise.
+ entry->addRef();
+ return entry;
}
-static const UChar _NUL = 0;
+const CollationCacheEntry *
+CollationLoader::getCacheEntry(UErrorCode &errorCode) {
+ LocaleCacheKey<CollationCacheEntry> key(locale);
+ const CollationCacheEntry *entry = NULL;
+ cache->get(key, this, entry, errorCode);
+ return entry;
+}
-U_CAPI const UChar* U_EXPORT2
-ucol_getRules( const UCollator *coll,
- int32_t *length)
-{
- if(coll->rules != NULL) {
- *length = coll->rulesLength;
- return coll->rules;
- }
- else {
- *length = 0;
- return &_NUL;
+const CollationCacheEntry *
+CollationLoader::makeCacheEntryFromRoot(
+ const Locale &/*loc*/,
+ UErrorCode &errorCode) const {
+ if (U_FAILURE(errorCode)) {
+ return NULL;
}
+ rootEntry->addRef();
+ return makeCacheEntry(validLocale, rootEntry, errorCode);
}
-U_CAPI UBool U_EXPORT2
-ucol_equals(const UCollator *source, const UCollator *target) {
- UErrorCode status = U_ZERO_ERROR;
- // if pointers are equal, collators are equal
- if(source == target) {
- return TRUE;
- }
- int32_t i = 0, j = 0;
- // if any of attributes are different, collators are not equal
- for(i = 0; i < UCOL_ATTRIBUTE_COUNT; i++) {
- if(ucol_getAttribute(source, (UColAttribute)i, &status) != ucol_getAttribute(target, (UColAttribute)i, &status) || U_FAILURE(status)) {
- return FALSE;
- }
+const CollationCacheEntry *
+CollationLoader::makeCacheEntry(
+ const Locale &loc,
+ const CollationCacheEntry *entryFromCache,
+ UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode) || loc == entryFromCache->validLocale) {
+ return entryFromCache;
+ }
+ CollationCacheEntry *entry = new CollationCacheEntry(loc, entryFromCache->tailoring);
+ if(entry == NULL) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
+ entryFromCache->removeRef();
+ return NULL;
}
+ entry->addRef();
+ entryFromCache->removeRef();
+ return entry;
+}
- int32_t sourceRulesLen = 0, targetRulesLen = 0;
- const UChar *sourceRules = ucol_getRules(source, &sourceRulesLen);
- const UChar *targetRules = ucol_getRules(target, &targetRulesLen);
+U_NAMESPACE_END
- if(sourceRulesLen == targetRulesLen && u_strncmp(sourceRules, targetRules, sourceRulesLen) == 0) {
- // all the attributes are equal and the rules are equal - collators are equal
- return(TRUE);
- }
- // hard part, need to construct tree from rules and see if they yield the same tailoring
- UBool result = TRUE;
- UParseError parseError;
- UColTokenParser sourceParser, targetParser;
- int32_t sourceListLen = 0, targetListLen = 0;
- ucol_tok_initTokenList(&sourceParser, sourceRules, sourceRulesLen, source->UCA, &status);
- ucol_tok_initTokenList(&targetParser, targetRules, targetRulesLen, target->UCA, &status);
- sourceListLen = ucol_tok_assembleTokenList(&sourceParser, &parseError, &status);
- targetListLen = ucol_tok_assembleTokenList(&targetParser, &parseError, &status);
-
- if(sourceListLen != targetListLen) {
- // different number of resets
- result = FALSE;
- } else {
- UColToken *sourceReset = NULL, *targetReset = NULL;
- UChar *sourceResetString = NULL, *targetResetString = NULL;
- int32_t sourceStringLen = 0, targetStringLen = 0;
- for(i = 0; i < sourceListLen; i++) {
- sourceReset = sourceParser.lh[i].reset;
- sourceResetString = sourceParser.source+(sourceReset->source & 0xFFFFFF);
- sourceStringLen = sourceReset->source >> 24;
- for(j = 0; j < sourceListLen; j++) {
- targetReset = targetParser.lh[j].reset;
- targetResetString = targetParser.source+(targetReset->source & 0xFFFFFF);
- targetStringLen = targetReset->source >> 24;
- if(sourceStringLen == targetStringLen && (u_strncmp(sourceResetString, targetResetString, sourceStringLen) == 0)) {
- sourceReset = sourceParser.lh[i].first;
- targetReset = targetParser.lh[j].first;
- while(sourceReset != NULL && targetReset != NULL) {
- sourceResetString = sourceParser.source+(sourceReset->source & 0xFFFFFF);
- sourceStringLen = sourceReset->source >> 24;
- targetResetString = targetParser.source+(targetReset->source & 0xFFFFFF);
- targetStringLen = targetReset->source >> 24;
- if(sourceStringLen != targetStringLen || (u_strncmp(sourceResetString, targetResetString, sourceStringLen) != 0)) {
- result = FALSE;
- goto returnResult;
- }
- // probably also need to check the expansions
- if(sourceReset->expansion) {
- if(!targetReset->expansion) {
- result = FALSE;
- goto returnResult;
- } else {
- // compare expansions
- sourceResetString = sourceParser.source+(sourceReset->expansion& 0xFFFFFF);
- sourceStringLen = sourceReset->expansion >> 24;
- targetResetString = targetParser.source+(targetReset->expansion & 0xFFFFFF);
- targetStringLen = targetReset->expansion >> 24;
- if(sourceStringLen != targetStringLen || (u_strncmp(sourceResetString, targetResetString, sourceStringLen) != 0)) {
- result = FALSE;
- goto returnResult;
- }
- }
- } else {
- if(targetReset->expansion) {
- result = FALSE;
- goto returnResult;
- }
- }
- sourceReset = sourceReset->next;
- targetReset = targetReset->next;
- }
- if(sourceReset != targetReset) { // at least one is not NULL
- // there are more tailored elements in one list
- result = FALSE;
- goto returnResult;
- }
+U_NAMESPACE_USE
+U_CAPI UCollator*
+ucol_open(const char *loc,
+ UErrorCode *status)
+{
+ UTRACE_ENTRY_OC(UTRACE_UCOL_OPEN);
+ UTRACE_DATA1(UTRACE_INFO, "locale = \"%s\"", loc);
+ UCollator *result = NULL;
- break;
- }
- }
- // couldn't find the reset anchor, so the collators are not equal
- if(j == sourceListLen) {
- result = FALSE;
- goto returnResult;
- }
- }
+ Collator *coll = Collator::createInstance(loc, *status);
+ if(U_SUCCESS(*status)) {
+ result = coll->toUCollator();
}
-
-returnResult:
- ucol_tok_closeTokenList(&sourceParser);
- ucol_tok_closeTokenList(&targetParser);
+ UTRACE_EXIT_PTR_STATUS(result, *status);
return result;
-
}
+
U_CAPI int32_t U_EXPORT2
ucol_getDisplayName( const char *objLoc,
const char *dispLoc,
int32_t resultLength,
UErrorCode *status)
{
- U_NAMESPACE_USE
-
if(U_FAILURE(*status)) return -1;
UnicodeString dst;
if(!(result==NULL && resultLength==0)) {
#if !UCONFIG_NO_SERVICE
U_CAPI UEnumeration* U_EXPORT2
ucol_openAvailableLocales(UErrorCode *status) {
- U_NAMESPACE_USE
-
// This is a wrapper over Collator::getAvailableLocales()
if (U_FAILURE(*status)) {
return NULL;
}
- StringEnumeration *s = Collator::getAvailableLocales();
+ StringEnumeration *s = icu::Collator::getAvailableLocales();
if (s == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
- return uenum_openStringEnumeration(s, status);
+ return uenum_openFromStringEnumeration(s, status);
}
#endif
static const char* const KEYWORDS[] = { "collation" };
-#define KEYWORD_COUNT (sizeof(KEYWORDS)/sizeof(KEYWORDS[0]))
+#define KEYWORD_COUNT UPRV_LENGTHOF(KEYWORDS)
U_CAPI UEnumeration* U_EXPORT2
ucol_getKeywords(UErrorCode *status) {
return ures_getKeywordValues(U_ICUDATA_COLL, RESOURCE_NAME, status);
}
+static const UEnumeration defaultKeywordValues = {
+ NULL,
+ NULL,
+ ulist_close_keyword_values_iterator,
+ ulist_count_keyword_values,
+ uenum_unextDefault,
+ ulist_next_keyword_value,
+ ulist_reset_keyword_values_iterator
+};
+
+namespace {
+
+struct KeywordsSink : public ResourceSink {
+public:
+ KeywordsSink(UErrorCode &errorCode) :
+ values(ulist_createEmptyList(&errorCode)), hasDefault(FALSE) {}
+ virtual ~KeywordsSink();
+
+ virtual void put(const char *key, ResourceValue &value, UBool /*noFallback*/,
+ UErrorCode &errorCode) {
+ if (U_FAILURE(errorCode)) { return; }
+ ResourceTable collations = value.getTable(errorCode);
+ for (int32_t i = 0; collations.getKeyAndValue(i, key, value); ++i) {
+ UResType type = value.getType();
+ if (type == URES_STRING) {
+ if (!hasDefault && uprv_strcmp(key, "default") == 0) {
+ CharString defcoll;
+ defcoll.appendInvariantChars(value.getUnicodeString(errorCode), errorCode);
+ if (U_SUCCESS(errorCode) && !defcoll.isEmpty()) {
+ char *ownedDefault = uprv_strdup(defcoll.data());
+ if (ownedDefault == NULL) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
+ return;
+ }
+ ulist_removeString(values, defcoll.data());
+ ulist_addItemBeginList(values, ownedDefault, TRUE, &errorCode);
+ hasDefault = TRUE;
+ }
+ }
+ } else if (type == URES_TABLE && uprv_strncmp(key, "private-", 8) != 0) {
+ if (!ulist_containsString(values, key, (int32_t)uprv_strlen(key))) {
+ ulist_addItemEndList(values, key, FALSE, &errorCode);
+ }
+ }
+ if (U_FAILURE(errorCode)) { return; }
+ }
+ }
+
+ UList *values;
+ UBool hasDefault;
+};
+
+KeywordsSink::~KeywordsSink() {
+ ulist_deleteList(values);
+}
+
+} // namespace
+
+U_CAPI UEnumeration* U_EXPORT2
+ucol_getKeywordValuesForLocale(const char* /*key*/, const char* locale,
+ UBool /*commonlyUsed*/, UErrorCode* status) {
+ // Note: The parameter commonlyUsed is not used.
+ // The switch is in the method signature for consistency
+ // with other locale services.
+
+ // Read available collation values from collation bundles.
+ LocalUResourceBundlePointer bundle(ures_open(U_ICUDATA_COLL, locale, status));
+ KeywordsSink sink(*status);
+ ures_getAllItemsWithFallback(bundle.getAlias(), RESOURCE_NAME, sink, *status);
+ if (U_FAILURE(*status)) { return NULL; }
+
+ UEnumeration *en = (UEnumeration *)uprv_malloc(sizeof(UEnumeration));
+ if (en == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+ memcpy(en, &defaultKeywordValues, sizeof(UEnumeration));
+ ulist_resetList(sink.values); // Initialize the iterator.
+ en->context = sink.values;
+ sink.values = NULL; // Avoid deletion in the sink destructor.
+ return en;
+}
+
U_CAPI int32_t U_EXPORT2
ucol_getFunctionalEquivalent(char* result, int32_t resultCapacity,
const char* keyword, const char* locale,
isAvailable, TRUE, status);
}
-/* returns the locale name the collation data comes from */
-U_CAPI const char * U_EXPORT2
-ucol_getLocale(const UCollator *coll, ULocDataLocaleType type, UErrorCode *status) {
- return ucol_getLocaleByType(coll, type, status);
-}
-
-U_CAPI const char * U_EXPORT2
-ucol_getLocaleByType(const UCollator *coll, ULocDataLocaleType type, UErrorCode *status) {
- const char *result = NULL;
- if(status == NULL || U_FAILURE(*status)) {
- return NULL;
- }
- UTRACE_ENTRY(UTRACE_UCOL_GETLOCALE);
- UTRACE_DATA1(UTRACE_INFO, "coll=%p", coll);
-
- switch(type) {
- case ULOC_ACTUAL_LOCALE:
- result = coll->actualLocale;
- break;
- case ULOC_VALID_LOCALE:
- result = coll->validLocale;
- break;
- case ULOC_REQUESTED_LOCALE:
- result = coll->requestedLocale;
- break;
- default:
- *status = U_ILLEGAL_ARGUMENT_ERROR;
- }
- UTRACE_DATA1(UTRACE_INFO, "result = %s", result);
- UTRACE_EXIT_STATUS(*status);
- return result;
-}
-
-U_CFUNC void U_EXPORT2
-ucol_setReqValidLocales(UCollator *coll, char *requestedLocaleToAdopt, char *validLocaleToAdopt, char *actualLocaleToAdopt)
-{
- if (coll) {
- if (coll->validLocale) {
- uprv_free(coll->validLocale);
- }
- coll->validLocale = validLocaleToAdopt;
- if (coll->requestedLocale) { // should always have
- uprv_free(coll->requestedLocale);
- }
- coll->requestedLocale = requestedLocaleToAdopt;
- if (coll->actualLocale) {
- uprv_free(coll->actualLocale);
- }
- coll->actualLocale = actualLocaleToAdopt;
- }
-}
-
-U_CAPI USet * U_EXPORT2
-ucol_getTailoredSet(const UCollator *coll, UErrorCode *status)
-{
- U_NAMESPACE_USE
-
- if(status == NULL || U_FAILURE(*status)) {
- return NULL;
- }
- if(coll == NULL || coll->UCA == NULL) {
- *status = U_ILLEGAL_ARGUMENT_ERROR;
- return NULL;
- }
- UParseError parseError;
- UColTokenParser src;
- int32_t rulesLen = 0;
- const UChar *rules = ucol_getRules(coll, &rulesLen);
- UBool startOfRules = TRUE;
- // we internally use the C++ class, for the following reasons:
- // 1. we need to utilize canonical iterator, which is a C++ only class
- // 2. canonical iterator returns UnicodeStrings - USet cannot take them
- // 3. USet is internally really UnicodeSet, C is just a wrapper
- UnicodeSet *tailored = new UnicodeSet();
- UnicodeString pattern;
- UnicodeString empty;
- CanonicalIterator it(empty, *status);
-
-
- // The idea is to tokenize the rule set. For each non-reset token,
- // we add all the canonicaly equivalent FCD sequences
- ucol_tok_initTokenList(&src, rules, rulesLen, coll->UCA, status);
- while (ucol_tok_parseNextToken(&src, startOfRules, &parseError, status) != NULL) {
- startOfRules = FALSE;
- if(src.parsedToken.strength != UCOL_TOK_RESET) {
- const UChar *stuff = src.source+(src.parsedToken.charsOffset);
- it.setSource(UnicodeString(stuff, src.parsedToken.charsLen), *status);
- pattern = it.next();
- while(!pattern.isBogus()) {
- if(Normalizer::quickCheck(pattern, UNORM_FCD, *status) != UNORM_NO) {
- tailored->add(pattern);
- }
- pattern = it.next();
- }
- }
- }
- ucol_tok_closeTokenList(&src);
- return (USet *)tailored;
-}
-
#endif /* #if !UCONFIG_NO_COLLATION */
projects / apple / icu.git / blobdiff