scuffed-code/icu4c/source/common/locid.cpp
2003-10-15 05:30:32 +00:00

1210 lines
31 KiB
C++

/*
**********************************************************************
* Copyright (C) 1997-2003, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
*
* File locid.cpp
*
* Created by: Richard Gillam
*
* Modification History:
*
* Date Name Description
* 02/11/97 aliu Changed gLocPath to fgDataDirectory and added
* methods to get and set it.
* 04/02/97 aliu Made operator!= inline; fixed return value
* of getName().
* 04/15/97 aliu Cleanup for AIX/Win32.
* 04/24/97 aliu Numerous changes per code review.
* 08/18/98 stephen Changed getDisplayName()
* Added SIMPLIFIED_CHINESE, TRADITIONAL_CHINESE
* Added getISOCountries(), getISOLanguages(),
* getLanguagesForCountry()
* 03/16/99 bertrand rehaul.
* 07/21/99 stephen Added U_CFUNC setDefault
* 11/09/99 weiv Added const char * getName() const;
* 04/12/00 srl removing unicodestring api's and cached hash code
* 08/10/01 grhoten Change the static Locales to accessor functions
******************************************************************************
*/
#include "unicode/locid.h"
#include "unicode/uloc.h"
#include "umutex.h"
#include "uassert.h"
#include "cmemory.h"
#include "cstring.h"
#include "uhash.h"
#include "ucln_cmn.h"
static Locale* availableLocaleList = NULL;
static int32_t availableLocaleListCount;
typedef enum ELocalePos {
eENGLISH,
eFRENCH,
eGERMAN,
eITALIAN,
eJAPANESE,
eKOREAN,
eCHINESE,
eFRANCE,
eGERMANY,
eITALY,
eJAPAN,
eKOREA,
eCHINA, /* Alias for PRC */
eTAIWAN,
eUK,
eUS,
eCANADA,
eCANADA_FRENCH,
//eDEFAULT,
eMAX_LOCALES
} ELocalePos;
U_CFUNC int32_t locale_getKeywords(const char *localeID,
char prev,
char *keywords, int32_t keywordCapacity,
char *values, int32_t valuesCapacity, int32_t *valLen,
UBool valuesToo,
UErrorCode *status);
static Locale *gLocaleCache = NULL;
static const Locale *gDefaultLocale = NULL;
static UHashtable *gDefaultLocalesHashT = NULL;
U_CDECL_BEGIN
//
// Deleter function for Locales owned by the default Locale hash table/
//
static void U_CALLCONV
deleteLocale(void *obj) {
delete (Locale *) obj;
}
U_CDECL_END
UBool
locale_cleanup(void)
{
U_NAMESPACE_USE
if (availableLocaleList) {
delete []availableLocaleList;
availableLocaleList = NULL;
}
availableLocaleListCount = 0;
if (gLocaleCache) {
delete [] gLocaleCache;
gLocaleCache = NULL;
}
if (gDefaultLocalesHashT) {
uhash_close(gDefaultLocalesHashT); // Automatically deletes all elements, using deleter func.
gDefaultLocalesHashT = NULL;
}
gDefaultLocale = NULL;
return TRUE;
}
U_NAMESPACE_BEGIN
UOBJECT_DEFINE_RTTI_IMPLEMENTATION(Locale)
//
// locale_set_default_internal.
//
void locale_set_default_internal(const char *id)
{
U_NAMESPACE_USE
UErrorCode status = U_ZERO_ERROR;
// If given a NULL string for the locale id, grab the default
// name from the system.
// (Different from most other locale APIs, where a null name means use
// the current ICU default locale.)
if (id == NULL) {
umtx_lock(NULL);
id = uprv_getDefaultLocaleID();
umtx_unlock(NULL);
}
// put the locale id into a canonical form,
// in preparation for looking up this locale in the hash table of
// already-created locale objects.
//
status = U_ZERO_ERROR;
char localeNameBuf[512];
uloc_getName(id, localeNameBuf, sizeof(localeNameBuf)-1, &status);
localeNameBuf[sizeof(localeNameBuf)-1] = 0; // Force null termination in event of
// a long name filling the buffer.
// (long names are truncated.)
// Lazy creation of the hash table itself, if needed.
//
umtx_lock(NULL);
UBool hashTableNeedsInit = (gDefaultLocalesHashT == NULL);
umtx_unlock(NULL);
if (hashTableNeedsInit) {
status = U_ZERO_ERROR;
UHashtable *tHashTable = uhash_open(uhash_hashChars, uhash_compareChars, &status);
if (U_FAILURE(status)) {
return;
}
uhash_setValueDeleter(tHashTable, deleteLocale);
umtx_lock(NULL);
if (gDefaultLocalesHashT == NULL) {
gDefaultLocalesHashT = tHashTable;
umtx_unlock(NULL);
} else {
umtx_unlock(NULL);
uhash_close(tHashTable);
}
}
// Hash table lookup, key is the locale full name
umtx_lock(NULL);
Locale *newDefault = (Locale *)uhash_get(gDefaultLocalesHashT, localeNameBuf);
if (newDefault != NULL) {
// We have the requested locale in the hash table already.
// Just set it as default. Inside the mutex lock, for those troublesome processors.
gDefaultLocale = newDefault;
umtx_unlock(NULL);
} else {
umtx_unlock(NULL);
// We haven't seen this locale id before.
// Create a new Locale object for it.
newDefault = new Locale(Locale::eBOGUS);
if (newDefault == NULL) {
// No way to report errors from here.
return;
}
newDefault->init(localeNameBuf);
// Add newly created Locale to the hash table of default Locales
const char *key = newDefault->getName();
U_ASSERT(uprv_strcmp(key, localeNameBuf) == 0);
umtx_lock(NULL);
const Locale *hashTableVal = (const Locale *)uhash_get(gDefaultLocalesHashT, key);
if (hashTableVal == NULL) {
uhash_put(gDefaultLocalesHashT, (void *)key, newDefault, &status);
gDefaultLocale = newDefault;
umtx_unlock(NULL);
// ignore errors from hash table insert. (Couldn't do anything anyway)
// We can still set the default Locale,
// it just wont be cached, and will eventually leak.
} else {
// Some other thread raced us through here, and got the new Locale
// into the hash table before us. Use that one.
gDefaultLocale = hashTableVal; // Assignment to gDefaultLocale must happen inside mutex
umtx_unlock(NULL);
delete newDefault;
}
}
}
U_NAMESPACE_END
/* sfb 07/21/99 */
U_CFUNC void
locale_set_default(const char *id)
{
U_NAMESPACE_USE
locale_set_default_internal(id);
}
/* end */
U_CFUNC const char *
locale_get_default(void)
{
U_NAMESPACE_USE
return Locale::getDefault().getName();
}
U_NAMESPACE_BEGIN
/*Character separating the posix id fields*/
// '_'
// In the platform codepage.
#define SEP_CHAR '_'
Locale::~Locale()
{
/*if fullName is on the heap, we free it*/
if (fullName != fullNameBuffer)
{
uprv_free(fullName);
fullName = NULL;
}
}
Locale::Locale()
: UObject(), fullName(fullNameBuffer)
{
init(NULL);
}
Locale::Locale(Locale::ELocaleType t)
: UObject(), fullName(fullNameBuffer)
{
setToBogus();
}
Locale::Locale( const char * newLanguage,
const char * newCountry,
const char * newVariant,
const char * newKeywords)
: UObject(), fullName(fullNameBuffer)
{
if( (newLanguage==NULL) && (newCountry == NULL) && (newVariant == NULL) )
{
init(NULL); /* shortcut */
}
else
{
char togo_stack[ULOC_FULLNAME_CAPACITY];
char *togo;
char *togo_heap = NULL;
int32_t size = 0;
int32_t lsize = 0;
int32_t csize = 0;
int32_t vsize = 0;
char *p;
// Calculate the size of the resulting string.
// Language
if ( newLanguage != NULL )
{
lsize = (int32_t)uprv_strlen(newLanguage);
size = lsize;
}
// _Country
if ( newCountry != NULL )
{
csize = (int32_t)uprv_strlen(newCountry);
size += csize;
}
// _Variant
if ( newVariant != NULL )
{
// remove leading _'s
while(newVariant[0] == SEP_CHAR)
{
newVariant++;
}
// remove trailing _'s
vsize = (int32_t)uprv_strlen(newVariant);
while( (vsize>1) && (newVariant[vsize-1] == SEP_CHAR) )
{
vsize--;
}
}
if( vsize > 0 )
{
size += vsize;
}
// Separator rules:
if ( vsize > 0 )
{
size += 2; // at least: __v
}
else if ( csize > 0 )
{
size += 1; // at least: _v
}
// NOW we have the full locale string..
/*if the whole string is longer than our internal limit, we need
to go to the heap for temporary buffers*/
if (size > ULOC_FULLNAME_CAPACITY)
{
togo_heap = (char *)uprv_malloc(sizeof(char)*(size+1));
togo = togo_heap;
}
else
{
togo = togo_stack;
}
togo[0] = 0;
// Now, copy it back.
p = togo;
if ( lsize != 0 )
{
uprv_strcpy(p, newLanguage);
p += lsize;
}
if ( ( vsize != 0 ) || (csize != 0) ) // at least: __v
{ // ^
*p++ = SEP_CHAR;
}
if ( csize != 0 )
{
uprv_strcpy(p, newCountry);
p += csize;
}
if ( vsize != 0)
{
*p++ = SEP_CHAR; // at least: __v
uprv_strncpy(p, newVariant, vsize); // Must use strncpy because
p += vsize; // of trimming (above).
*p = 0; // terminate
}
// Parse it, because for example 'language' might really be a complete
// string.
init(togo);
if (togo_heap) {
uprv_free(togo_heap);
}
}
}
Locale::Locale(const Locale &other)
: UObject(other), fullName(fullNameBuffer)
{
*this = other;
}
Locale &Locale::operator=(const Locale &other)
{
if (this == &other) {
return *this;
}
if (&other == NULL) {
this->setToBogus();
return *this;
}
/* Free our current storage */
if(fullName != fullNameBuffer) {
uprv_free(fullName);
fullName = fullNameBuffer;
}
/* Allocate the full name if necessary */
if(other.fullName != other.fullNameBuffer) {
fullName = (char *)uprv_malloc(sizeof(char)*(uprv_strlen(other.fullName)+1));
}
/* Copy the full name */
uprv_strcpy(fullName, other.fullName);
/* Copy the language and country fields */
uprv_strcpy(language, other.language);
uprv_strcpy(script, other.script);
uprv_strcpy(country, other.country);
/* The variantBegin is an offset into fullName, just copy it */
variantBegin = other.variantBegin;
fIsBogus = other.fIsBogus;
return *this;
}
UBool
Locale::operator==( const Locale& other) const
{
return (uprv_strcmp(other.fullName, fullName) == 0);
}
/*This function initializes a Locale from a C locale ID*/
Locale& Locale::init(const char* localeID)
{
fIsBogus = FALSE;
/* Free our current storage */
if(fullName != fullNameBuffer) {
uprv_free(fullName);
fullName = fullNameBuffer;
}
// not a loop:
// just an easy way to have a common error-exit
// without goto and without another function
do {
char *separator;
char *field[5] = {0};
int32_t fieldLen[5] = {0};
int32_t fieldIdx;
int32_t variantField;
int32_t length;
UErrorCode err;
if(localeID == NULL) {
// not an error, just set the default locale
return *this = getDefault();
}
/* preset all fields to empty */
language[0] = script[0] = country[0] = 0;
// "canonicalize" the locale ID to ICU/Java format
err = U_ZERO_ERROR;
length = uloc_getName(localeID, fullName, sizeof(fullNameBuffer), &err);
if(U_FAILURE(err) || err == U_STRING_NOT_TERMINATED_WARNING) {
/*Go to heap for the fullName if necessary*/
fullName = (char *)uprv_malloc(sizeof(char)*(length + 1));
if(fullName == 0) {
fullName = fullNameBuffer;
break; // error: out of memory
}
err = U_ZERO_ERROR;
length = uloc_getName(localeID, fullName, length + 1, &err);
}
if(U_FAILURE(err) || err == U_STRING_NOT_TERMINATED_WARNING) {
/* should never occur */
break;
}
variantBegin = length;
/* after uloc_getName() we know that only '_' are separators */
separator = field[0] = fullName;
fieldIdx = 1;
while ((separator = uprv_strchr(field[fieldIdx-1], SEP_CHAR)) && fieldIdx < (int32_t)(sizeof(field)/sizeof(field[0]))-1) {
field[fieldIdx] = separator + 1;
fieldLen[fieldIdx-1] = separator - field[fieldIdx-1];
fieldIdx++;
}
if(separator = uprv_strchr(field[fieldIdx-1], '@')) {
fieldLen[fieldIdx-1] = separator - field[fieldIdx-1];
} else {
fieldLen[fieldIdx-1] = length - (int32_t)(field[fieldIdx-1] - fullName);
}
if (fieldLen[0] >= (int32_t)(sizeof(language))
|| (fieldLen[1] == 4 && fieldLen[2] >= (int32_t)(sizeof(country)))
|| (fieldLen[1] != 4 && fieldLen[1] >= (int32_t)(sizeof(country))))
{
break; // error: one of the fields is too long
}
variantField = 0;
if (fieldLen[0] > 0) {
/* We have a language */
uprv_memcpy(language, fullName, fieldLen[0]);
language[fieldLen[0]] = 0;
}
if (fieldLen[1] == 4) {
/* We have at least a script */
uprv_memcpy(script, fullName + fieldLen[0], fieldLen[1]);
script[fieldLen[1]] = 0;
variantField = 3;
if (fieldLen[2] > 0) {
/* We have a country */
uprv_memcpy(country, fullName + fieldLen[0] + fieldLen[1], fieldLen[2]);
country[fieldLen[2]] = 0;
}
}
else if (fieldLen[1] > 0) {
/* We have a country and no script */
uprv_memcpy(country, field[1], fieldLen[1]);
country[fieldLen[1]] = 0;
variantField = 2;
}
if (variantField > 0 && fieldLen[variantField] > 0) {
/* We have a variant */
variantBegin = (int32_t)(field[variantField] - fullName);
}
// successful end of init()
return *this;
} while(0);
// when an error occurs, then set this object to "bogus" (there is no UErrorCode here)
setToBogus();
return *this;
}
int32_t
Locale::hashCode() const
{
UHashTok hashKey;
hashKey.pointer = fullName;
return uhash_hashChars(hashKey);
}
void
Locale::setToBogus() {
/* Free our current storage */
if(fullName != fullNameBuffer) {
uprv_free(fullName);
fullName = fullNameBuffer;
}
*fullNameBuffer = 0;
*language = 0;
*script = 0;
*country = 0;
fIsBogus = TRUE;
}
const Locale&
Locale::getDefault()
{
umtx_lock(NULL);
UBool needInit = (gDefaultLocale == NULL);
umtx_unlock(NULL);
if (needInit) {
umtx_lock(NULL);
/* uprv_getDefaultLocaleID is not thread safe, so we surround it with a mutex */
const char *cLocale = uprv_getDefaultLocaleID();
umtx_unlock(NULL);
locale_set_default_internal(cLocale);
}
return *gDefaultLocale;
}
void
Locale::setDefault( const Locale& newLocale,
UErrorCode& status)
{
if (U_FAILURE(status)) {
return;
}
/* Set the default from the full name string of the supplied locale.
* This is a convenient way to access the default locale caching mechanisms.
*/
const char *localeID = newLocale.getName();
locale_set_default_internal(localeID);
}
Locale
Locale::createFromName (const char *name)
{
if (name) {
Locale l;
l.init(name);
return l;
}
else {
return getDefault();
}
}
const char *
Locale::getISO3Language() const
{
return uloc_getISO3Language(fullName);
}
const char *
Locale::getISO3Country() const
{
return uloc_getISO3Country(fullName);
}
/**
* Return the LCID value as specified in the "LocaleID" resource for this
* locale. The LocaleID must be expressed as a hexadecimal number, from
* one to four digits. If the LocaleID resource is not present, or is
* in an incorrect format, 0 is returned. The LocaleID is for use in
* Windows (it is an LCID), but is available on all platforms.
*/
uint32_t
Locale::getLCID() const
{
return uloc_getLCID(fullName);
}
UnicodeString&
Locale::getDisplayLanguage(UnicodeString& dispLang) const
{
return this->getDisplayLanguage(getDefault(), dispLang);
}
/*We cannot make any assumptions on the size of the output display strings
* Yet, since we are calling through to a C API, we need to set limits on
* buffer size. For all the following getDisplay functions we first attempt
* to fill up a stack allocated buffer. If it is to small we heap allocated
* the exact buffer we need copy it to the UnicodeString and delete it*/
UnicodeString&
Locale::getDisplayLanguage(const Locale &displayLocale,
UnicodeString &result) const {
UChar *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if(buffer==0) {
result.truncate(0);
return result;
}
length=uloc_getDisplayLanguage(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
buffer=result.getBuffer(length);
if(buffer==0) {
result.truncate(0);
return result;
}
errorCode=U_ZERO_ERROR;
length=uloc_getDisplayLanguage(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
}
if(U_FAILURE(errorCode)) {
result.truncate(0);
}
return result;
}
UnicodeString&
Locale::getDisplayScript(UnicodeString& dispScript) const
{
return this->getDisplayScript(getDefault(), dispScript);
}
UnicodeString&
Locale::getDisplayScript(const Locale &displayLocale,
UnicodeString &result) const {
UChar *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if(buffer==0) {
result.truncate(0);
return result;
}
length=uloc_getDisplayScript(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
buffer=result.getBuffer(length);
if(buffer==0) {
result.truncate(0);
return result;
}
errorCode=U_ZERO_ERROR;
length=uloc_getDisplayScript(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
}
if(U_FAILURE(errorCode)) {
result.truncate(0);
}
return result;
}
UnicodeString&
Locale::getDisplayCountry(UnicodeString& dispCntry) const
{
return this->getDisplayCountry(getDefault(), dispCntry);
}
UnicodeString&
Locale::getDisplayCountry(const Locale &displayLocale,
UnicodeString &result) const {
UChar *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if(buffer==0) {
result.truncate(0);
return result;
}
length=uloc_getDisplayCountry(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
buffer=result.getBuffer(length);
if(buffer==0) {
result.truncate(0);
return result;
}
errorCode=U_ZERO_ERROR;
length=uloc_getDisplayCountry(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
}
if(U_FAILURE(errorCode)) {
result.truncate(0);
}
return result;
}
UnicodeString&
Locale::getDisplayVariant(UnicodeString& dispVar) const
{
return this->getDisplayVariant(getDefault(), dispVar);
}
UnicodeString&
Locale::getDisplayVariant(const Locale &displayLocale,
UnicodeString &result) const {
UChar *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if(buffer==0) {
result.truncate(0);
return result;
}
length=uloc_getDisplayVariant(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
buffer=result.getBuffer(length);
if(buffer==0) {
result.truncate(0);
return result;
}
errorCode=U_ZERO_ERROR;
length=uloc_getDisplayVariant(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
}
if(U_FAILURE(errorCode)) {
result.truncate(0);
}
return result;
}
UnicodeString&
Locale::getDisplayName( UnicodeString& name ) const
{
return this->getDisplayName(getDefault(), name);
}
UnicodeString&
Locale::getDisplayName(const Locale &displayLocale,
UnicodeString &result) const {
UChar *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if(buffer==0) {
result.truncate(0);
return result;
}
length=uloc_getDisplayName(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
if(errorCode==U_BUFFER_OVERFLOW_ERROR) {
buffer=result.getBuffer(length);
if(buffer==0) {
result.truncate(0);
return result;
}
errorCode=U_ZERO_ERROR;
length=uloc_getDisplayName(fullName, displayLocale.fullName,
buffer, result.getCapacity(),
&errorCode);
result.releaseBuffer(length);
}
if(U_FAILURE(errorCode)) {
result.truncate(0);
}
return result;
}
const Locale*
Locale::getAvailableLocales(int32_t& count)
{
// for now, there is a hardcoded list, so just walk through that list and set it up.
umtx_lock(NULL);
UBool needInit = availableLocaleList == 0;
umtx_unlock(NULL);
if (needInit) {
int32_t locCount = uloc_countAvailable();
Locale *newLocaleList = 0;
if(locCount) {
newLocaleList = new Locale[locCount];
}
if (newLocaleList == NULL) {
return NULL;
}
count = locCount;
while(--locCount >= 0) {
newLocaleList[locCount].setFromPOSIXID(uloc_getAvailable(locCount));
}
umtx_lock(NULL);
if(availableLocaleList == 0) {
availableLocaleListCount = count;
availableLocaleList = newLocaleList;
newLocaleList = NULL;
}
umtx_unlock(NULL);
delete []newLocaleList;
}
count = availableLocaleListCount;
return availableLocaleList;
}
const char* const* Locale::getISOCountries()
{
return uloc_getISOCountries();
}
const char* const* Locale::getISOLanguages()
{
return uloc_getISOLanguages();
}
// Set the locale's data based on a posix id.
void Locale::setFromPOSIXID(const char *posixID)
{
init(posixID);
}
const Locale &
Locale::getEnglish(void)
{
return getLocale(eENGLISH);
}
const Locale &
Locale::getFrench(void)
{
return getLocale(eFRENCH);
}
const Locale &
Locale::getGerman(void)
{
return getLocale(eGERMAN);
}
const Locale &
Locale::getItalian(void)
{
return getLocale(eITALIAN);
}
const Locale &
Locale::getJapanese(void)
{
return getLocale(eJAPANESE);
}
const Locale &
Locale::getKorean(void)
{
return getLocale(eKOREAN);
}
const Locale &
Locale::getChinese(void)
{
return getLocale(eCHINESE);
}
const Locale &
Locale::getSimplifiedChinese(void)
{
return getLocale(eCHINA);
}
const Locale &
Locale::getTraditionalChinese(void)
{
return getLocale(eTAIWAN);
}
const Locale &
Locale::getFrance(void)
{
return getLocale(eFRANCE);
}
const Locale &
Locale::getGermany(void)
{
return getLocale(eGERMANY);
}
const Locale &
Locale::getItaly(void)
{
return getLocale(eITALY);
}
const Locale &
Locale::getJapan(void)
{
return getLocale(eJAPAN);
}
const Locale &
Locale::getKorea(void)
{
return getLocale(eKOREA);
}
const Locale &
Locale::getChina(void)
{
return getLocale(eCHINA);
}
const Locale &
Locale::getPRC(void)
{
return getLocale(eCHINA);
}
const Locale &
Locale::getTaiwan(void)
{
return getLocale(eTAIWAN);
}
const Locale &
Locale::getUK(void)
{
return getLocale(eUK);
}
const Locale &
Locale::getUS(void)
{
return getLocale(eUS);
}
const Locale &
Locale::getCanada(void)
{
return getLocale(eCANADA);
}
const Locale &
Locale::getCanadaFrench(void)
{
return getLocale(eCANADA_FRENCH);
}
const Locale &
Locale::getLocale(int locid)
{
Locale *localeCache = getLocaleCache();
U_ASSERT(locid < eMAX_LOCALES);
if (localeCache == NULL) {
// Failure allocating the locale cache.
// The best we can do is return a NULL reference.
locid = 0;
}
return localeCache[locid];
}
/*
This function is defined this way in order to get around static
initialization and static destruction.
*/
Locale *
Locale::getLocaleCache(void)
{
umtx_lock(NULL);
UBool needInit = (gLocaleCache == NULL);
umtx_unlock(NULL);
if (needInit) {
Locale *tLocaleCache = new Locale[eMAX_LOCALES];
if (tLocaleCache == NULL) {
return NULL;
}
tLocaleCache[eENGLISH] = Locale("en");
tLocaleCache[eFRENCH] = Locale("fr");
tLocaleCache[eGERMAN] = Locale("de");
tLocaleCache[eITALIAN] = Locale("it");
tLocaleCache[eJAPANESE] = Locale("ja");
tLocaleCache[eKOREAN] = Locale("ko");
tLocaleCache[eCHINESE] = Locale("zh");
tLocaleCache[eFRANCE] = Locale("fr", "FR");
tLocaleCache[eGERMANY] = Locale("de", "DE");
tLocaleCache[eITALY] = Locale("it", "IT");
tLocaleCache[eJAPAN] = Locale("ja", "JP");
tLocaleCache[eKOREA] = Locale("ko", "KR");
tLocaleCache[eCHINA] = Locale("zh", "CN");
tLocaleCache[eTAIWAN] = Locale("zh", "TW");
tLocaleCache[eUK] = Locale("en", "GB");
tLocaleCache[eUS] = Locale("en", "US");
tLocaleCache[eCANADA] = Locale("en", "CA");
tLocaleCache[eCANADA_FRENCH] = Locale("fr", "CA");
umtx_lock(NULL);
if (gLocaleCache == NULL) {
gLocaleCache = tLocaleCache;
tLocaleCache = NULL;
}
umtx_unlock(NULL);
if (tLocaleCache) {
delete [] tLocaleCache; // Fancy array delete will destruct each member.
}
}
return gLocaleCache;
}
class KeywordEnumeration : public StringEnumeration {
private:
char *keywords;
char *current;
UChar currUKey[256];
UnicodeString currUSKey;
static const char fgClassID;
public:
static inline UClassID getStaticClassID(void) { return (UClassID)&fgClassID; }
virtual UClassID getDynamicClassID(void) const { return getStaticClassID(); }
public:
KeywordEnumeration(const char *keys, int32_t keywordLen, UErrorCode &status) {
keywords = (char *)uprv_malloc(keywordLen+1);
uprv_memcpy(keywords, keys, keywordLen);
keywords[keywordLen] = 0;
current = keywords;
}
~KeywordEnumeration() {
uprv_free(keywords);
}
int32_t count(UErrorCode &status) const {
char *kw = keywords;
int32_t result = 0;
while(*kw) {
result++;
kw += uprv_strlen(kw)+1;
}
return result;
}
const char* next(int32_t* resultLength, UErrorCode& status) {
const char* result = current;
if(*result) {
*resultLength = uprv_strlen(current);
current += *resultLength+1;
} else {
*resultLength = 0;
result = NULL;
}
return result;
}
const UChar* unext(int32_t* resultLength, UErrorCode& status) {
const char* starter = next(resultLength, status);
if(starter) {
u_charsToUChars(starter, currUKey, *resultLength);
currUKey[*resultLength] = 0;
return currUKey;
} else {
return NULL;
}
}
const UnicodeString* snext(UErrorCode& status) {
int32_t resultLength = 0;
const UChar* starter = unext(&resultLength, status);
if(starter) {
currUSKey.setTo(TRUE, starter, resultLength);
return &currUSKey;
} else {
return NULL;
}
}
void reset(UErrorCode& /*status*/) {
current = keywords;
}
};
const char KeywordEnumeration::fgClassID = '\0';
StringEnumeration *
Locale::getKeywords(UErrorCode &status) const
{
char keywords[256];
int32_t keywordCapacity = 256;
StringEnumeration *result = NULL;
const char* variantStart = uprv_strchr(fullName, '@');
const char* assignment = uprv_strchr(fullName, '=');
if(variantStart) {
if(assignment) {
int32_t keyLen = locale_getKeywords(variantStart+1, '@', keywords, keywordCapacity, NULL, 0, NULL, FALSE, &status);
if(keyLen) {
result = new KeywordEnumeration(keywords, keyLen, status);
}
} else {
status = U_INVALID_FORMAT_ERROR;
}
}
return result;
}
int32_t
Locale::getKeywordValue(const char* keywordName, char *buffer, int32_t bufLen, UErrorCode &status) const
{
return uloc_getKeywordValue(fullName, keywordName, buffer, bufLen, &status);
}
//eof
U_NAMESPACE_END