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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2014, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* loadednormalizer2impl.cpp
*
* created on: 2014sep03
* created by: Markus W. Scherer
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_NORMALIZATION
#include "unicode/udata.h"
#include "unicode/localpointer.h"
#include "unicode/normalizer2.h"
#include "unicode/ucptrie.h"
#include "unicode/unistr.h"
#include "unicode/unorm.h"
#include "cstring.h"
#include "mutex.h"
#include "norm2allmodes.h"
#include "normalizer2impl.h"
#include "uassert.h"
#include "ucln_cmn.h"
#include "uhash.h"
U_NAMESPACE_BEGIN
class LoadedNormalizer2Impl : public Normalizer2Impl {
public:
LoadedNormalizer2Impl() : memory(NULL), ownedTrie(NULL) {}
virtual ~LoadedNormalizer2Impl();
void load(const char *packageName, const char *name, UErrorCode &errorCode);
private:
static UBool U_CALLCONV
isAcceptable(void *context, const char *type, const char *name, const UDataInfo *pInfo);
UDataMemory *memory;
UCPTrie *ownedTrie;
};
LoadedNormalizer2Impl::~LoadedNormalizer2Impl() {
udata_close(memory);
ucptrie_close(ownedTrie);
}
UBool U_CALLCONV
LoadedNormalizer2Impl::isAcceptable(void * /*context*/,
const char * /* type */, const char * /*name*/,
const UDataInfo *pInfo) {
if(
pInfo->size>=20 &&
pInfo->isBigEndian==U_IS_BIG_ENDIAN &&
pInfo->charsetFamily==U_CHARSET_FAMILY &&
pInfo->dataFormat[0]==0x4e && /* dataFormat="Nrm2" */
pInfo->dataFormat[1]==0x72 &&
pInfo->dataFormat[2]==0x6d &&
pInfo->dataFormat[3]==0x32 &&
pInfo->formatVersion[0]==4
) {
// Normalizer2Impl *me=(Normalizer2Impl *)context;
// uprv_memcpy(me->dataVersion, pInfo->dataVersion, 4);
return TRUE;
} else {
return FALSE;
}
}
void
LoadedNormalizer2Impl::load(const char *packageName, const char *name, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return;
}
memory=udata_openChoice(packageName, "nrm", name, isAcceptable, this, &errorCode);
if(U_FAILURE(errorCode)) {
return;
}
const uint8_t *inBytes=(const uint8_t *)udata_getMemory(memory);
const int32_t *inIndexes=(const int32_t *)inBytes;
int32_t indexesLength=inIndexes[IX_NORM_TRIE_OFFSET]/4;
if(indexesLength<=IX_MIN_LCCC_CP) {
errorCode=U_INVALID_FORMAT_ERROR; // Not enough indexes.
return;
}
int32_t offset=inIndexes[IX_NORM_TRIE_OFFSET];
int32_t nextOffset=inIndexes[IX_EXTRA_DATA_OFFSET];
ownedTrie=ucptrie_openFromBinary(UCPTRIE_TYPE_FAST, UCPTRIE_VALUE_BITS_16,
inBytes+offset, nextOffset-offset, NULL,
&errorCode);
if(U_FAILURE(errorCode)) {
return;
}
offset=nextOffset;
nextOffset=inIndexes[IX_SMALL_FCD_OFFSET];
const uint16_t *inExtraData=(const uint16_t *)(inBytes+offset);
// smallFCD: new in formatVersion 2
offset=nextOffset;
const uint8_t *inSmallFCD=inBytes+offset;
init(inIndexes, ownedTrie, inExtraData, inSmallFCD);
}
// instance cache ---------------------------------------------------------- ***
Norm2AllModes *
Norm2AllModes::createInstance(const char *packageName,
const char *name,
UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return NULL;
}
LoadedNormalizer2Impl *impl=new LoadedNormalizer2Impl;
if(impl==NULL) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
impl->load(packageName, name, errorCode);
return createInstance(impl, errorCode);
}
U_CDECL_BEGIN
static UBool U_CALLCONV uprv_loaded_normalizer2_cleanup();
U_CDECL_END
#if !NORM2_HARDCODE_NFC_DATA
static Norm2AllModes *nfcSingleton;
static icu::UInitOnce nfcInitOnce = U_INITONCE_INITIALIZER;
#endif
static Norm2AllModes *nfkcSingleton;
static icu::UInitOnce nfkcInitOnce = U_INITONCE_INITIALIZER;
static Norm2AllModes *nfkc_cfSingleton;
static icu::UInitOnce nfkc_cfInitOnce = U_INITONCE_INITIALIZER;
static UHashtable *cache=NULL;
// UInitOnce singleton initialization function
static void U_CALLCONV initSingletons(const char *what, UErrorCode &errorCode) {
#if !NORM2_HARDCODE_NFC_DATA
if (uprv_strcmp(what, "nfc") == 0) {
nfcSingleton = Norm2AllModes::createInstance(NULL, "nfc", errorCode);
} else
#endif
if (uprv_strcmp(what, "nfkc") == 0) {
nfkcSingleton = Norm2AllModes::createInstance(NULL, "nfkc", errorCode);
} else if (uprv_strcmp(what, "nfkc_cf") == 0) {
nfkc_cfSingleton = Norm2AllModes::createInstance(NULL, "nfkc_cf", errorCode);
} else {
UPRV_UNREACHABLE_EXIT; // Unknown singleton
}
ucln_common_registerCleanup(UCLN_COMMON_LOADED_NORMALIZER2, uprv_loaded_normalizer2_cleanup);
}
U_CDECL_BEGIN
static void U_CALLCONV deleteNorm2AllModes(void *allModes) {
delete (Norm2AllModes *)allModes;
}
static UBool U_CALLCONV uprv_loaded_normalizer2_cleanup() {
#if !NORM2_HARDCODE_NFC_DATA
delete nfcSingleton;
nfcSingleton = NULL;
nfcInitOnce.reset();
#endif
delete nfkcSingleton;
nfkcSingleton = NULL;
nfkcInitOnce.reset();
delete nfkc_cfSingleton;
nfkc_cfSingleton = NULL;
nfkc_cfInitOnce.reset();
uhash_close(cache);
cache=NULL;
return TRUE;
}
U_CDECL_END
#if !NORM2_HARDCODE_NFC_DATA
const Norm2AllModes *
Norm2AllModes::getNFCInstance(UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return NULL; }
umtx_initOnce(nfcInitOnce, &initSingletons, "nfc", errorCode);
return nfcSingleton;
}
#endif
const Norm2AllModes *
Norm2AllModes::getNFKCInstance(UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return NULL; }
umtx_initOnce(nfkcInitOnce, &initSingletons, "nfkc", errorCode);
return nfkcSingleton;
}
const Norm2AllModes *
Norm2AllModes::getNFKC_CFInstance(UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return NULL; }
umtx_initOnce(nfkc_cfInitOnce, &initSingletons, "nfkc_cf", errorCode);
return nfkc_cfSingleton;
}
#if !NORM2_HARDCODE_NFC_DATA
const Normalizer2 *
Normalizer2::getNFCInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
return allModes!=NULL ? &allModes->comp : NULL;
}
const Normalizer2 *
Normalizer2::getNFDInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
return allModes!=NULL ? &allModes->decomp : NULL;
}
const Normalizer2 *Normalizer2Factory::getFCDInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
return allModes!=NULL ? &allModes->fcd : NULL;
}
const Normalizer2 *Normalizer2Factory::getFCCInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
return allModes!=NULL ? &allModes->fcc : NULL;
}
const Normalizer2Impl *
Normalizer2Factory::getNFCImpl(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFCInstance(errorCode);
return allModes!=NULL ? allModes->impl : NULL;
}
#endif
const Normalizer2 *
Normalizer2::getNFKCInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFKCInstance(errorCode);
return allModes!=NULL ? &allModes->comp : NULL;
}
const Normalizer2 *
Normalizer2::getNFKDInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFKCInstance(errorCode);
return allModes!=NULL ? &allModes->decomp : NULL;
}
const Normalizer2 *
Normalizer2::getNFKCCasefoldInstance(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFKC_CFInstance(errorCode);
return allModes!=NULL ? &allModes->comp : NULL;
}
const Normalizer2 *
Normalizer2::getInstance(const char *packageName,
const char *name,
UNormalization2Mode mode,
UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return NULL;
}
if(name==NULL || *name==0) {
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
return NULL;
}
const Norm2AllModes *allModes=NULL;
if(packageName==NULL) {
if(0==uprv_strcmp(name, "nfc")) {
allModes=Norm2AllModes::getNFCInstance(errorCode);
} else if(0==uprv_strcmp(name, "nfkc")) {
allModes=Norm2AllModes::getNFKCInstance(errorCode);
} else if(0==uprv_strcmp(name, "nfkc_cf")) {
allModes=Norm2AllModes::getNFKC_CFInstance(errorCode);
}
}
if(allModes==NULL && U_SUCCESS(errorCode)) {
{
Mutex lock;
if(cache!=NULL) {
allModes=(Norm2AllModes *)uhash_get(cache, name);
}
}
if(allModes==NULL) {
ucln_common_registerCleanup(UCLN_COMMON_LOADED_NORMALIZER2, uprv_loaded_normalizer2_cleanup);
LocalPointer<Norm2AllModes> localAllModes(
Norm2AllModes::createInstance(packageName, name, errorCode));
if(U_SUCCESS(errorCode)) {
Mutex lock;
if(cache==NULL) {
cache=uhash_open(uhash_hashChars, uhash_compareChars, NULL, &errorCode);
if(U_FAILURE(errorCode)) {
return NULL;
}
uhash_setKeyDeleter(cache, uprv_free);
uhash_setValueDeleter(cache, deleteNorm2AllModes);
}
void *temp=uhash_get(cache, name);
if(temp==NULL) {
int32_t keyLength= static_cast<int32_t>(uprv_strlen(name)+1);
char *nameCopy=(char *)uprv_malloc(keyLength);
if(nameCopy==NULL) {
errorCode=U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
uprv_memcpy(nameCopy, name, keyLength);
allModes=localAllModes.getAlias();
uhash_put(cache, nameCopy, localAllModes.orphan(), &errorCode);
} else {
// race condition
allModes=(Norm2AllModes *)temp;
}
}
}
}
if(allModes!=NULL && U_SUCCESS(errorCode)) {
switch(mode) {
case UNORM2_COMPOSE:
return &allModes->comp;
case UNORM2_DECOMPOSE:
return &allModes->decomp;
case UNORM2_FCD:
return &allModes->fcd;
case UNORM2_COMPOSE_CONTIGUOUS:
return &allModes->fcc;
default:
break; // do nothing
}
}
return NULL;
}
const Normalizer2 *
Normalizer2Factory::getInstance(UNormalizationMode mode, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) {
return NULL;
}
switch(mode) {
case UNORM_NFD:
return Normalizer2::getNFDInstance(errorCode);
case UNORM_NFKD:
return Normalizer2::getNFKDInstance(errorCode);
case UNORM_NFC:
return Normalizer2::getNFCInstance(errorCode);
case UNORM_NFKC:
return Normalizer2::getNFKCInstance(errorCode);
case UNORM_FCD:
return getFCDInstance(errorCode);
default: // UNORM_NONE
return getNoopInstance(errorCode);
}
}
const Normalizer2Impl *
Normalizer2Factory::getNFKCImpl(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFKCInstance(errorCode);
return allModes!=NULL ? allModes->impl : NULL;
}
const Normalizer2Impl *
Normalizer2Factory::getNFKC_CFImpl(UErrorCode &errorCode) {
const Norm2AllModes *allModes=Norm2AllModes::getNFKC_CFInstance(errorCode);
return allModes!=NULL ? allModes->impl : NULL;
}
U_NAMESPACE_END
// C API ------------------------------------------------------------------- ***
U_NAMESPACE_USE
U_CAPI const UNormalizer2 * U_EXPORT2
unorm2_getNFKCInstance(UErrorCode *pErrorCode) {
return (const UNormalizer2 *)Normalizer2::getNFKCInstance(*pErrorCode);
}
U_CAPI const UNormalizer2 * U_EXPORT2
unorm2_getNFKDInstance(UErrorCode *pErrorCode) {
return (const UNormalizer2 *)Normalizer2::getNFKDInstance(*pErrorCode);
}
U_CAPI const UNormalizer2 * U_EXPORT2
unorm2_getNFKCCasefoldInstance(UErrorCode *pErrorCode) {
return (const UNormalizer2 *)Normalizer2::getNFKCCasefoldInstance(*pErrorCode);
}
U_CAPI const UNormalizer2 * U_EXPORT2
unorm2_getInstance(const char *packageName,
const char *name,
UNormalization2Mode mode,
UErrorCode *pErrorCode) {
return (const UNormalizer2 *)Normalizer2::getInstance(packageName, name, mode, *pErrorCode);
}
U_CFUNC UNormalizationCheckResult
unorm_getQuickCheck(UChar32 c, UNormalizationMode mode) {
if(mode<=UNORM_NONE || UNORM_FCD<=mode) {
return UNORM_YES;
}
UErrorCode errorCode=U_ZERO_ERROR;
const Normalizer2 *norm2=Normalizer2Factory::getInstance(mode, errorCode);
if(U_SUCCESS(errorCode)) {
return ((const Normalizer2WithImpl *)norm2)->getQuickCheck(c);
} else {
return UNORM_MAYBE;
}
}
#endif // !UCONFIG_NO_NORMALIZATION