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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2012-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* collationroot.cpp
*
* created on: 2012dec17
* created by: Markus W. Scherer
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_COLLATION
#include "unicode/coll.h"
#include "unicode/udata.h"
#include "collation.h"
#include "collationdata.h"
#include "collationdatareader.h"
#include "collationroot.h"
#include "collationsettings.h"
#include "collationtailoring.h"
#include "normalizer2impl.h"
#include "ucln_in.h"
#include "udatamem.h"
#include "umutex.h"
#include "umapfile.h"
U_NAMESPACE_BEGIN
namespace {
static const CollationCacheEntry *rootSingleton = nullptr;
static UInitOnce initOnce {};
} // namespace
U_CDECL_BEGIN
static UBool U_CALLCONV uprv_collation_root_cleanup() {
SharedObject::clearPtr(rootSingleton);
initOnce.reset();
return true;
}
U_CDECL_END
UDataMemory*
CollationRoot::loadFromFile(const char* ucadataPath, UErrorCode &errorCode) {
UDataMemory dataMemory;
UDataMemory *rDataMem = nullptr;
if (U_FAILURE(errorCode)) {
return nullptr;
}
if (uprv_mapFile(&dataMemory, ucadataPath, &errorCode)) {
if (dataMemory.pHeader->dataHeader.magic1 == 0xda &&
dataMemory.pHeader->dataHeader.magic2 == 0x27 &&
CollationDataReader::isAcceptable(nullptr, "icu", "ucadata", &dataMemory.pHeader->info)) {
rDataMem = UDataMemory_createNewInstance(&errorCode);
if (U_FAILURE(errorCode)) {
return nullptr;
}
rDataMem->pHeader = dataMemory.pHeader;
rDataMem->mapAddr = dataMemory.mapAddr;
rDataMem->map = dataMemory.map;
return rDataMem;
}
errorCode = U_INVALID_FORMAT_ERROR;
return nullptr;
}
errorCode = U_MISSING_RESOURCE_ERROR;
return nullptr;
}
void U_CALLCONV
CollationRoot::load(const char* ucadataPath, UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return; }
LocalPointer<CollationTailoring> t(new CollationTailoring(nullptr));
if(t.isNull() || t->isBogus()) {
errorCode = U_MEMORY_ALLOCATION_ERROR;
return;
}
t->memory = ucadataPath ? CollationRoot::loadFromFile(ucadataPath, errorCode) :
udata_openChoice(U_ICUDATA_NAME U_TREE_SEPARATOR_STRING "coll",
"icu", "ucadata",
CollationDataReader::isAcceptable,
t->version, &errorCode);
if(U_FAILURE(errorCode)) { return; }
const uint8_t *inBytes = static_cast<const uint8_t *>(udata_getMemory(t->memory));
CollationDataReader::read(nullptr, inBytes, udata_getLength(t->memory), *t, errorCode);
if(U_FAILURE(errorCode)) { return; }
ucln_i18n_registerCleanup(UCLN_I18N_COLLATION_ROOT, uprv_collation_root_cleanup);
CollationCacheEntry *entry = new CollationCacheEntry(Locale::getRoot(), t.getAlias());
if(entry != nullptr) {
t.orphan(); // The rootSingleton took ownership of the tailoring.
entry->addRef();
rootSingleton = entry;
}
}
const CollationCacheEntry *
CollationRoot::getRootCacheEntry(UErrorCode &errorCode) {
umtx_initOnce(initOnce, CollationRoot::load, static_cast<const char*>(nullptr), errorCode);
if(U_FAILURE(errorCode)) { return nullptr; }
return rootSingleton;
}
const CollationTailoring *
CollationRoot::getRoot(UErrorCode &errorCode) {
umtx_initOnce(initOnce, CollationRoot::load, static_cast<const char*>(nullptr), errorCode);
if(U_FAILURE(errorCode)) { return nullptr; }
return rootSingleton->tailoring;
}
const CollationData *
CollationRoot::getData(UErrorCode &errorCode) {
const CollationTailoring *root = getRoot(errorCode);
if(U_FAILURE(errorCode)) { return nullptr; }
return root->data;
}
const CollationSettings *
CollationRoot::getSettings(UErrorCode &errorCode) {
const CollationTailoring *root = getRoot(errorCode);
if(U_FAILURE(errorCode)) { return nullptr; }
return root->settings;
}
void
CollationRoot::forceLoadFromFile(const char* ucadataPath, UErrorCode &errorCode) {
umtx_initOnce(initOnce, CollationRoot::load, ucadataPath, errorCode);
}
U_NAMESPACE_END
#endif // !UCONFIG_NO_COLLATION
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