Update ICU to 54.1 step 1

source/common/loadednormalizer2impl.cpp

Index: source/common/loadednormalizer2impl.cpp
diff --git a/source/common/loadednormalizer2impl.cpp b/source/common/loadednormalizer2impl.cpp
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+++ b/source/common/loadednormalizer2impl.cpp
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+/*
+*******************************************************************************
+* 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/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;
+    UTrie2 *ownedTrie;
+};
+
+LoadedNormalizer2Impl::~LoadedNormalizer2Impl() {
+    udata_close(memory);
+    utrie2_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]==2
+    ) {
+        // 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_MAYBE_YES) {
+        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=utrie2_openFromSerialized(UTRIE2_16_VALUE_BITS,
+                                        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
+
+static Norm2AllModes *nfkcSingleton;
+static Norm2AllModes *nfkc_cfSingleton;
+static UHashtable    *cache=NULL;
+
+static icu::UInitOnce nfkcInitOnce = U_INITONCE_INITIALIZER;
+static icu::UInitOnce nfkc_cfInitOnce = U_INITONCE_INITIALIZER;
+
+// UInitOnce singleton initialization function
+static void U_CALLCONV initSingletons(const char *what, UErrorCode &errorCode) {
+    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 {
+        U_ASSERT(FALSE);   // 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() {
+    delete nfkcSingleton;
+    nfkcSingleton = NULL;
+    delete nfkc_cfSingleton;
+    nfkc_cfSingleton = NULL;
+    uhash_close(cache);
+    cache=NULL;
+    nfkcInitOnce.reset(); 
+    nfkc_cfInitOnce.reset(); 
+    return TRUE;
+}
+
+U_CDECL_END
+
+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;
+}
+
+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) {
+            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=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