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