/*
******************************************************************************
* Copyright (C) 1996-2007, International Business Machines Corporation and *
* others. All Rights Reserved. *
******************************************************************************
*/
/**
* File coll.cpp
*
* Created by: Helena Shih
*
* Modification History:
*
* Date Name Description
* 2/5/97 aliu Modified createDefault to load collation data from
* binary files when possible. Added related methods
* createCollationFromFile, chopLocale, createPathName.
* 2/11/97 aliu Added methods addToCache, findInCache, which implement
* a Collation cache. Modified createDefault to look in
* cache first, and also to store newly created Collation
* objects in the cache. Modified to not use gLocPath.
* 2/12/97 aliu Modified to create objects from RuleBasedCollator cache.
* Moved cache out of Collation class.
* 2/13/97 aliu Moved several methods out of this class and into
* RuleBasedCollator, with modifications. Modified
* createDefault() to call new RuleBasedCollator(Locale&)
* constructor. General clean up and documentation.
* 2/20/97 helena Added clone, operator==, operator!=, operator=, and copy
* constructor.
* 05/06/97 helena Added memory allocation error detection.
* 05/08/97 helena Added createInstance().
* 6/20/97 helena Java class name change.
* 04/23/99 stephen Removed EDecompositionMode, merged with
* Normalizer::EMode
* 11/23/9 srl Inlining of some critical functions
* 01/29/01 synwee Modified into a C++ wrapper calling C APIs (ucol.h)
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_COLLATION
#include "unicode/coll.h"
#include "unicode/tblcoll.h"
#include "ucol_imp.h"
#include "cstring.h"
#include "cmemory.h"
#include "umutex.h"
#include "servloc.h"
#include "ustrenum.h"
#include "ucln_in.h"
static U_NAMESPACE_QUALIFIER Locale* availableLocaleList = NULL;
static int32_t availableLocaleListCount;
static U_NAMESPACE_QUALIFIER ICULocaleService* gService = NULL;
/**
* Release all static memory held by collator.
*/
U_CDECL_BEGIN
static UBool U_CALLCONV collator_cleanup(void) {
#if !UCONFIG_NO_SERVICE
if (gService) {
delete gService;
gService = NULL;
}
#endif
if (availableLocaleList) {
delete []availableLocaleList;
availableLocaleList = NULL;
}
availableLocaleListCount = 0;
return TRUE;
}
U_CDECL_END
U_NAMESPACE_BEGIN
#if !UCONFIG_NO_SERVICE
// ------------------------------------------
//
// Registration
//
//-------------------------------------------
CollatorFactory::~CollatorFactory() {}
//-------------------------------------------
UBool
CollatorFactory::visible(void) const {
return TRUE;
}
//-------------------------------------------
UnicodeString&
CollatorFactory::getDisplayName(const Locale& objectLocale,
const Locale& displayLocale,
UnicodeString& result)
{
return objectLocale.getDisplayName(displayLocale, result);
}
// -------------------------------------
class ICUCollatorFactory : public ICUResourceBundleFactory {
public:
ICUCollatorFactory(): ICUResourceBundleFactory(UnicodeString(U_ICUDATA_COLL, -1, US_INV)) { }
protected:
virtual UObject* create(const ICUServiceKey& key, const ICUService* service, UErrorCode& status) const;
};
UObject*
ICUCollatorFactory::create(const ICUServiceKey& key, const ICUService* /* service */, UErrorCode& status) const {
if (handlesKey(key, status)) {
const LocaleKey& lkey = (const LocaleKey&)key;
Locale loc;
// make sure the requested locale is correct
// default LocaleFactory uses currentLocale since that's the one vetted by handlesKey
// but for ICU rb resources we use the actual one since it will fallback again
lkey.canonicalLocale(loc);
return Collator::makeInstance(loc, status);
}
return NULL;
}
// -------------------------------------
class ICUCollatorService : public ICULocaleService {
public:
ICUCollatorService()
: ICULocaleService(UNICODE_STRING_SIMPLE("Collator"))
{
UErrorCode status = U_ZERO_ERROR;
registerFactory(new ICUCollatorFactory(), status);
}
virtual UObject* cloneInstance(UObject* instance) const {
return ((Collator*)instance)->clone();
}
virtual UObject* handleDefault(const ICUServiceKey& key, UnicodeString* actualID, UErrorCode& status) const {
LocaleKey& lkey = (LocaleKey&)key;
if (actualID) {
// Ugly Hack Alert! We return an empty actualID to signal
// to callers that this is a default object, not a "real"
// service-created object. (TODO remove in 3.0) [aliu]
actualID->truncate(0);
}
Locale loc("");
lkey.canonicalLocale(loc);
return Collator::makeInstance(loc, status);
}
virtual UObject* getKey(ICUServiceKey& key, UnicodeString* actualReturn, UErrorCode& status) const {
UnicodeString ar;
if (actualReturn == NULL) {
actualReturn = &ar;
}
Collator* result = (Collator*)ICULocaleService::getKey(key, actualReturn, status);
// Ugly Hack Alert! If the actualReturn length is zero, this
// means we got a default object, not a "real" service-created
// object. We don't call setLocales() on a default object,
// because that will overwrite its correct built-in locale
// metadata (valid & actual) with our incorrect data (all we
// have is the requested locale). (TODO remove in 3.0) [aliu]
if (result && actualReturn->length() > 0) {
const LocaleKey& lkey = (const LocaleKey&)key;
Locale canonicalLocale("");
Locale currentLocale("");
result->setLocales(lkey.canonicalLocale(canonicalLocale),
LocaleUtility::initLocaleFromName(*actualReturn, currentLocale));
}
return result;
}
virtual UBool isDefault() const {
return countFactories() == 1;
}
};
// -------------------------------------
static ICULocaleService*
getService(void)
{
UBool needInit;
UMTX_CHECK(NULL, (UBool)(gService == NULL), needInit);
if(needInit) {
ICULocaleService *newservice = new ICUCollatorService();
if(newservice) {
umtx_lock(NULL);
if(gService == NULL) {
gService = newservice;
newservice = NULL;
}
umtx_unlock(NULL);
}
if(newservice) {
delete newservice;
}
else {
ucln_i18n_registerCleanup(UCLN_I18N_COLLATOR, collator_cleanup);
}
}
return gService;
}
// -------------------------------------
static inline UBool
hasService(void)
{
UBool retVal;
UMTX_CHECK(NULL, gService != NULL, retVal);
return retVal;
}
// -------------------------------------
UCollator*
Collator::createUCollator(const char *loc,
UErrorCode *status)
{
UCollator *result = 0;
if (status && U_SUCCESS(*status) && hasService()) {
Locale desiredLocale(loc);
Collator *col = (Collator*)gService->get(desiredLocale, *status);
if (col && col->getDynamicClassID() == RuleBasedCollator::getStaticClassID()) {
RuleBasedCollator *rbc = (RuleBasedCollator *)col;
if (!rbc->dataIsOwned) {
result = ucol_safeClone(rbc->ucollator, NULL, NULL, status);
} else {
result = rbc->ucollator;
rbc->ucollator = NULL; // to prevent free on delete
}
}
delete col;
}
return result;
}
#endif /* UCONFIG_NO_SERVICE */
static UBool isAvailableLocaleListInitialized(UErrorCode &status) {
// for now, there is a hardcoded list, so just walk through that list and set it up.
UBool needInit;
UMTX_CHECK(NULL, availableLocaleList == NULL, needInit);
if (needInit) {
UResourceBundle *index = NULL;
UResourceBundle installed;
Locale * temp;
int32_t i = 0;
int32_t localeCount;
ures_initStackObject(&installed);
index = ures_openDirect(U_ICUDATA_COLL, "res_index", &status);
ures_getByKey(index, "InstalledLocales", &installed, &status);
if(U_SUCCESS(status)) {
localeCount = ures_getSize(&installed);
temp = new Locale[localeCount];
if (temp != NULL) {
ures_resetIterator(&installed);
while(ures_hasNext(&installed)) {
const char *tempKey = NULL;
ures_getNextString(&installed, NULL, &tempKey, &status);
temp[i++] = Locale(tempKey);
}
umtx_lock(NULL);
if (availableLocaleList == NULL)
{
availableLocaleList = temp;
availableLocaleListCount = localeCount;
temp = NULL;
ucln_i18n_registerCleanup(UCLN_I18N_COLLATOR, collator_cleanup);
}
umtx_unlock(NULL);
needInit = FALSE;
if (temp) {
delete []temp;
}
}
ures_close(&installed);
}
ures_close(index);
}
return !needInit;
}
// Collator public methods -----------------------------------------------
Collator* U_EXPORT2 Collator::createInstance(UErrorCode& success)
{
return createInstance(Locale::getDefault(), success);
}
Collator* U_EXPORT2 Collator::createInstance(const Locale& desiredLocale,
UErrorCode& status)
{
if (U_FAILURE(status))
return 0;
#if !UCONFIG_NO_SERVICE
if (hasService()) {
Locale actualLoc;
Collator *result =
(Collator*)gService->get(desiredLocale, &actualLoc, status);
// Ugly Hack Alert! If the returned locale is empty (not root,
// but empty -- getName() == "") then that means the service
// returned a default object, not a "real" service object. In
// that case, the locale metadata (valid & actual) is setup
// correctly already, and we don't want to overwrite it. (TODO
// remove in 3.0) [aliu]
if (*actualLoc.getName() != 0) {
result->setLocales(desiredLocale, actualLoc);
}
return result;
}
#endif
return makeInstance(desiredLocale, status);
}
Collator* Collator::makeInstance(const Locale& desiredLocale,
UErrorCode& status)
{
// A bit of explanation is required here. Although in the current
// implementation
// Collator::createInstance() is just turning around and calling
// RuleBasedCollator(Locale&), this will not necessarily always be the
// case. For example, suppose we modify this code to handle a
// non-table-based Collator, such as that for Thai. In this case,
// createInstance() will have to be modified to somehow determine this fact
// (perhaps a field in the resource bundle). Then it can construct the
// non-table-based Collator in some other way, when it sees that it needs
// to.
// The specific caution is this: RuleBasedCollator(Locale&) will ALWAYS
// return a valid collation object, if the system if functioning properly.
// The reason is that it will fall back, use the default locale, and even
// use the built-in default collation rules. THEREFORE, createInstance()
// should in general ONLY CALL RuleBasedCollator(Locale&) IF IT KNOWS IN
// ADVANCE that the given locale's collation is properly implemented as a
// RuleBasedCollator.
// Currently, we don't do this...we always return a RuleBasedCollator,
// whether it is strictly correct to do so or not, without checking, because
// we currently have no way of checking.
RuleBasedCollator* collation = new RuleBasedCollator(desiredLocale,
status);
/* test for NULL */
if (collation == 0) {
status = U_MEMORY_ALLOCATION_ERROR;
return 0;
}
if (U_FAILURE(status))
{
delete collation;
collation = 0;
}
return collation;
}
#ifdef U_USE_COLLATION_OBSOLETE_2_6
// !!! dlf the following is obsolete, ignore registration for this
Collator *
Collator::createInstance(const Locale &loc,
UVersionInfo version,
UErrorCode &status)
{
Collator *collator;
UVersionInfo info;
collator=new RuleBasedCollator(loc, status);
/* test for NULL */
if (collator == 0) {
status = U_MEMORY_ALLOCATION_ERROR;
return 0;
}
if(U_SUCCESS(status)) {
collator->getVersion(info);
if(0!=uprv_memcmp(version, info, sizeof(UVersionInfo))) {
delete collator;
status=U_MISSING_RESOURCE_ERROR;
return 0;
}
}
return collator;
}
#endif
// implement deprecated, previously abstract method
Collator::EComparisonResult Collator::compare(const UnicodeString& source,
const UnicodeString& target) const
{
UErrorCode ec = U_ZERO_ERROR;
return (Collator::EComparisonResult)compare(source, target, ec);
}
// implement deprecated, previously abstract method
Collator::EComparisonResult Collator::compare(const UnicodeString& source,
const UnicodeString& target,
int32_t length) const
{
UErrorCode ec = U_ZERO_ERROR;
return (Collator::EComparisonResult)compare(source, target, length, ec);
}
// implement deprecated, previously abstract method
Collator::EComparisonResult Collator::compare(const UChar* source, int32_t sourceLength,
const UChar* target, int32_t targetLength)
const
{
UErrorCode ec = U_ZERO_ERROR;
return (Collator::EComparisonResult)compare(source, sourceLength, target, targetLength, ec);
}
UBool Collator::equals(const UnicodeString& source,
const UnicodeString& target) const
{
UErrorCode ec = U_ZERO_ERROR;
return (compare(source, target, ec) == UCOL_EQUAL);
}
UBool Collator::greaterOrEqual(const UnicodeString& source,
const UnicodeString& target) const
{
UErrorCode ec = U_ZERO_ERROR;
return (compare(source, target, ec) != UCOL_LESS);
}
UBool Collator::greater(const UnicodeString& source,
const UnicodeString& target) const
{
UErrorCode ec = U_ZERO_ERROR;
return (compare(source, target, ec) == UCOL_GREATER);
}
// this API ignores registered collators, since it returns an
// array of indefinite lifetime
const Locale* U_EXPORT2 Collator::getAvailableLocales(int32_t& count)
{
UErrorCode status = U_ZERO_ERROR;
Locale *result = NULL;
count = 0;
if (isAvailableLocaleListInitialized(status))
{
result = availableLocaleList;
count = availableLocaleListCount;
}
return result;
}
UnicodeString& U_EXPORT2 Collator::getDisplayName(const Locale& objectLocale,
const Locale& displayLocale,
UnicodeString& name)
{
#if !UCONFIG_NO_SERVICE
if (hasService()) {
UnicodeString locNameStr;
LocaleUtility::initNameFromLocale(objectLocale, locNameStr);
return gService->getDisplayName(locNameStr, name, displayLocale);
}
#endif
return objectLocale.getDisplayName(displayLocale, name);
}
UnicodeString& U_EXPORT2 Collator::getDisplayName(const Locale& objectLocale,
UnicodeString& name)
{
return getDisplayName(objectLocale, Locale::getDefault(), name);
}
/* This is useless information */
/*void Collator::getVersion(UVersionInfo versionInfo) const
{
if (versionInfo!=NULL)
uprv_memcpy(versionInfo, fVersion, U_MAX_VERSION_LENGTH);
}
*/
// UCollator protected constructor destructor ----------------------------
/**
* Default constructor.
* Constructor is different from the old default Collator constructor.
* The task for determing the default collation strength and normalization mode
* is left to the child class.
*/
Collator::Collator()
: UObject()
{
}
/**
* Constructor.
* Empty constructor, does not handle the arguments.
* This constructor is done for backward compatibility with 1.7 and 1.8.
* The task for handling the argument collation strength and normalization
* mode is left to the child class.
* @param collationStrength collation strength
* @param decompositionMode
* @deprecated 2.4 use the default constructor instead
*/
Collator::Collator(UCollationStrength, UNormalizationMode )
: UObject()
{
}
Collator::~Collator()
{
}
Collator::Collator(const Collator &other)
: UObject(other)
{
}
UBool Collator::operator==(const Collator& other) const
{
return (UBool)(this == &other);
}
UBool Collator::operator!=(const Collator& other) const
{
return (UBool)!(*this == other);
}
int32_t U_EXPORT2 Collator::getBound(const uint8_t *source,
int32_t sourceLength,
UColBoundMode boundType,
uint32_t noOfLevels,
uint8_t *result,
int32_t resultLength,
UErrorCode &status)
{
return ucol_getBound(source, sourceLength, boundType, noOfLevels, result, resultLength, &status);
}
void
Collator::setLocales(const Locale& /* requestedLocale */, const Locale& /* validLocale */) {
}
UnicodeSet *Collator::getTailoredSet(UErrorCode &status) const
{
if(U_FAILURE(status)) {
return NULL;
}
// everything can be changed
return new UnicodeSet(0, 0x10FFFF);
}
// -------------------------------------
#if !UCONFIG_NO_SERVICE
URegistryKey U_EXPORT2
Collator::registerInstance(Collator* toAdopt, const Locale& locale, UErrorCode& status)
{
if (U_SUCCESS(status)) {
return getService()->registerInstance(toAdopt, locale, status);
}
return NULL;
}
// -------------------------------------
class CFactory : public LocaleKeyFactory {
private:
CollatorFactory* _delegate;
Hashtable* _ids;
public:
CFactory(CollatorFactory* delegate, UErrorCode& status)
: LocaleKeyFactory(delegate->visible() ? VISIBLE : INVISIBLE)
, _delegate(delegate)
, _ids(NULL)
{
if (U_SUCCESS(status)) {
int32_t count = 0;
_ids = new Hashtable(status);
if (_ids) {
const UnicodeString * idlist = _delegate->getSupportedIDs(count, status);
for (int i = 0; i < count; ++i) {
_ids->put(idlist[i], (void*)this, status);
if (U_FAILURE(status)) {
delete _ids;
_ids = NULL;
return;
}
}
} else {
status = U_MEMORY_ALLOCATION_ERROR;
}
}
}
virtual ~CFactory()
{
delete _delegate;
delete _ids;
}
virtual UObject* create(const ICUServiceKey& key, const ICUService* service, UErrorCode& status) const;
protected:
virtual const Hashtable* getSupportedIDs(UErrorCode& status) const
{
if (U_SUCCESS(status)) {
return _ids;
}
return NULL;
}
virtual UnicodeString&
getDisplayName(const UnicodeString& id, const Locale& locale, UnicodeString& result) const;
};
UObject*
CFactory::create(const ICUServiceKey& key, const ICUService* /* service */, UErrorCode& status) const
{
if (handlesKey(key, status)) {
const LocaleKey& lkey = (const LocaleKey&)key;
Locale validLoc;
lkey.currentLocale(validLoc);
return _delegate->createCollator(validLoc);
}
return NULL;
}
UnicodeString&
CFactory::getDisplayName(const UnicodeString& id, const Locale& locale, UnicodeString& result) const
{
if ((_coverage & 0x1) == 0) {
UErrorCode status = U_ZERO_ERROR;
const Hashtable* ids = getSupportedIDs(status);
if (ids && (ids->get(id) != NULL)) {
Locale loc;
LocaleUtility::initLocaleFromName(id, loc);
return _delegate->getDisplayName(loc, locale, result);
}
}
result.setToBogus();
return result;
}
URegistryKey U_EXPORT2
Collator::registerFactory(CollatorFactory* toAdopt, UErrorCode& status)
{
if (U_SUCCESS(status)) {
CFactory* f = new CFactory(toAdopt, status);
if (f) {
return getService()->registerFactory(f, status);
}
status = U_MEMORY_ALLOCATION_ERROR;
}
return NULL;
}
// -------------------------------------
UBool U_EXPORT2
Collator::unregister(URegistryKey key, UErrorCode& status)
{
if (U_SUCCESS(status)) {
if (hasService()) {
return gService->unregister(key, status);
}
status = U_ILLEGAL_ARGUMENT_ERROR;
}
return FALSE;
}
#endif /* UCONFIG_NO_SERVICE */
class CollationLocaleListEnumeration : public StringEnumeration {
private:
int32_t index;
public:
static UClassID U_EXPORT2 getStaticClassID(void);
virtual UClassID getDynamicClassID(void) const;
public:
CollationLocaleListEnumeration()
: index(0)
{
// The global variables should already be initialized.
//isAvailableLocaleListInitialized(status);
}
virtual ~CollationLocaleListEnumeration() {
}
virtual StringEnumeration * clone() const
{
CollationLocaleListEnumeration *result = new CollationLocaleListEnumeration();
result->index = index;
return result;
}
virtual int32_t count(UErrorCode &/*status*/) const {
return availableLocaleListCount;
}
virtual const char* next(int32_t* resultLength, UErrorCode& /*status*/) {
const char* result;
if(index < availableLocaleListCount) {
result = availableLocaleList[index++].getName();
if(resultLength != NULL) {
*resultLength = uprv_strlen(result);
}
} else {
if(resultLength != NULL) {
*resultLength = 0;
}
result = NULL;
}
return result;
}
virtual const UnicodeString* snext(UErrorCode& status) {
int32_t resultLength = 0;
const char *s = next(&resultLength, status);
return setChars(s, resultLength, status);
}
virtual void reset(UErrorCode& /*status*/) {
index = 0;
}
};
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CollationLocaleListEnumeration)
// -------------------------------------
StringEnumeration* U_EXPORT2
Collator::getAvailableLocales(void)
{
#if !UCONFIG_NO_SERVICE
if (hasService()) {
return getService()->getAvailableLocales();
}
#endif /* UCONFIG_NO_SERVICE */
UErrorCode status = U_ZERO_ERROR;
if (isAvailableLocaleListInitialized(status)) {
return new CollationLocaleListEnumeration();
}
return NULL;
}
StringEnumeration* U_EXPORT2
Collator::getKeywords(UErrorCode& status) {
// This is a wrapper over ucol_getKeywords
UEnumeration* uenum = ucol_getKeywords(&status);
if (U_FAILURE(status)) {
uenum_close(uenum);
return NULL;
}
return new UStringEnumeration(uenum);
}
StringEnumeration* U_EXPORT2
Collator::getKeywordValues(const char *keyword, UErrorCode& status) {
// This is a wrapper over ucol_getKeywordValues
UEnumeration* uenum = ucol_getKeywordValues(keyword, &status);
if (U_FAILURE(status)) {
uenum_close(uenum);
return NULL;
}
return new UStringEnumeration(uenum);
}
Locale U_EXPORT2
Collator::getFunctionalEquivalent(const char* keyword, const Locale& locale,
UBool& isAvailable, UErrorCode& status) {
// This is a wrapper over ucol_getFunctionalEquivalent
char loc[ULOC_FULLNAME_CAPACITY];
/*int32_t len =*/ ucol_getFunctionalEquivalent(loc, sizeof(loc),
keyword, locale.getName(), &isAvailable, &status);
if (U_FAILURE(status)) {
*loc = 0; // root
}
return Locale::createFromName(loc);
}
// UCollator private data members ----------------------------------------
/* This is useless information */
/*const UVersionInfo Collator::fVersion = {1, 1, 0, 0};*/
// -------------------------------------
U_NAMESPACE_END
#endif /* #if !UCONFIG_NO_COLLATION */
/* eof */