The Tor Browser: intl/icu/source/common/locid.cpp@129ffea94266 (annotated)

intl/icu/source/common/locid.cpp@129ffea94266 (annotated)

intl/icu/source/common/locid.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  **********************************************************************
  *   Copyright (C) 1997-2012, 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 "putilimp.h"
 #include "mutex.h"
 #include "umutex.h"
 #include "uassert.h"
 #include "cmemory.h"
 #include "cstring.h"
 #include "uhash.h"
 #include "ucln_cmn.h"
 #include "ustr_imp.h"
 #define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
 U_CDECL_BEGIN
 static UBool U_CALLCONV locale_cleanup(void);
 U_CDECL_END
 U_NAMESPACE_BEGIN
 static Locale *gLocaleCache = NULL;
 // gDefaultLocaleMutex protects all access to gDefaultLocalesHashT and gDefaultLocale.
 static UMutex gDefaultLocaleMutex = U_MUTEX_INITIALIZER;
 static UHashtable *gDefaultLocalesHashT = NULL;
 static Locale *gDefaultLocale = NULL;
 U_NAMESPACE_END
 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,
     eROOT,
     //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);
 U_CDECL_BEGIN
 //
 // Deleter function for Locales owned by the default Locale hash table/
 //
 static void U_CALLCONV
 deleteLocale(void *obj) {
     delete (icu::Locale *) obj;
 }
 static UBool U_CALLCONV locale_cleanup(void)
 {
     U_NAMESPACE_USE
     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_CDECL_END
 U_NAMESPACE_BEGIN
 Locale *locale_set_default_internal(const char *id, UErrorCode& status) {
     // Synchronize this entire function.
     Mutex lock(&gDefaultLocaleMutex);
     UBool canonicalize = FALSE;
     // 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) {
         id = uprv_getDefaultLocaleID();   // This function not thread safe? TODO: verify.
         canonicalize = TRUE; // always canonicalize host ID
     }
     char localeNameBuf[512];
     if (canonicalize) {
         uloc_canonicalize(id, localeNameBuf, sizeof(localeNameBuf)-1, &status);
     } else {
         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.)
                                                  //
     if (U_FAILURE(status)) {
         return gDefaultLocale;
     }
     if (gDefaultLocalesHashT == NULL) {
         gDefaultLocalesHashT = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
         if (U_FAILURE(status)) {
             return gDefaultLocale;
         }
         uhash_setValueDeleter(gDefaultLocalesHashT, deleteLocale);
         ucln_common_registerCleanup(UCLN_COMMON_LOCALE, locale_cleanup);
     }
     Locale *newDefault = (Locale *)uhash_get(gDefaultLocalesHashT, localeNameBuf);
     if (newDefault == NULL) {
         newDefault = new Locale(Locale::eBOGUS);
         if (newDefault == NULL) {
             status = U_MEMORY_ALLOCATION_ERROR;
             return gDefaultLocale;
         }
         newDefault->init(localeNameBuf, FALSE);
         uhash_put(gDefaultLocalesHashT, (char*) newDefault->getName(), newDefault, &status);
         if (U_FAILURE(status)) {
             return gDefaultLocale;
         }
     }
     gDefaultLocale = newDefault;
     return gDefaultLocale;
 }
 U_NAMESPACE_END
 /* sfb 07/21/99 */
 U_CFUNC void
 locale_set_default(const char *id)
 {
     U_NAMESPACE_USE
     UErrorCode status = U_ZERO_ERROR;
     locale_set_default_internal(id, status);
 }
 /* end */
 U_CFUNC const char *
 locale_get_default(void)
 {
     U_NAMESPACE_USE
     return Locale::getDefault().getName();
 }
 U_NAMESPACE_BEGIN
 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(Locale)
 /*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;
     }
     if (baseName && baseName != baseNameBuffer) {
         uprv_free(baseName);
         baseName = NULL;
     }
 }
 Locale::Locale()
     : UObject(), fullName(fullNameBuffer), baseName(NULL)
 {
     init(NULL, FALSE);
 }
 /*
  * Internal constructor to allow construction of a locale object with
  *   NO side effects.   (Default constructor tries to get
  *   the default locale.)
  */
 Locale::Locale(Locale::ELocaleType)
     : UObject(), fullName(fullNameBuffer), baseName(NULL)
 {
     setToBogus();
 }
 Locale::Locale( const   char * newLanguage,
                 const   char * newCountry,
                 const   char * newVariant,
                 const   char * newKeywords)
     : UObject(), fullName(fullNameBuffer), baseName(NULL)
 {
     if( (newLanguage==NULL) && (newCountry == NULL) && (newVariant == NULL) )
     {
         init(NULL, FALSE); /* shortcut */
     }
     else
     {
         MaybeStackArray<char, ULOC_FULLNAME_CAPACITY> togo;
         int32_t size = 0;
         int32_t lsize = 0;
         int32_t csize = 0;
         int32_t vsize = 0;
         int32_t ksize = 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
         }
         if ( newKeywords != NULL)
         {
             ksize = (int32_t)uprv_strlen(newKeywords);
             size += ksize + 1;
         }
         //  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 >= togo.getCapacity())
         {
             // If togo_heap could not be created, initialize with default settings.
             if (togo.resize(size+1) == NULL) {
                 init(NULL, FALSE);
             }
         }
         togo[0] = 0;
         // Now, copy it back.
         p = togo.getAlias();
         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
         }
         if ( ksize != 0)
         {
             if (uprv_strchr(newKeywords, '=')) {
                 *p++ = '@'; /* keyword parsing */
             }
             else {
                 *p++ = '_'; /* Variant parsing with a script */
                 if ( vsize == 0) {
                     *p++ = '_'; /* No country found */
                 }
             }
             uprv_strcpy(p, newKeywords);
             p += ksize;
         }
         // Parse it, because for example 'language' might really be a complete
         // string.
         init(togo.getAlias(), FALSE);
     }
 }
 Locale::Locale(const Locale &other)
     : UObject(other), fullName(fullNameBuffer), baseName(NULL)
 {
     *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));
         if (fullName == NULL) {
             return *this;
         }
     }
     /* Copy the full name */
     uprv_strcpy(fullName, other.fullName);
     /* baseName is the cached result of getBaseName.  if 'other' has a
        baseName and it fits in baseNameBuffer, then copy it. otherwise set
        it to NULL, and let the user lazy-create it (in getBaseName) if they
        want it. */
     if(baseName && baseName != baseNameBuffer) {
         uprv_free(baseName);
     }
     baseName = NULL;
     if(other.baseName == other.baseNameBuffer) {
         uprv_strcpy(baseNameBuffer, other.baseNameBuffer);
         baseName = baseNameBuffer;
     }
     /* 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, just copy it */
     variantBegin = other.variantBegin;
     fIsBogus = other.fIsBogus;
     return *this;
 }
 Locale *
 Locale::clone() const {
     return new Locale(*this);
 }
 UBool
 Locale::operator==( const   Locale& other) const
 {
     return (uprv_strcmp(other.fullName, fullName) == 0);
 }
 #define ISASCIIALPHA(c) (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
 /*This function initializes a Locale from a C locale ID*/
 Locale& Locale::init(const char* localeID, UBool canonicalize)
 {
     fIsBogus = FALSE;
     /* Free our current storage */
     if(fullName != fullNameBuffer) {
         uprv_free(fullName);
         fullName = fullNameBuffer;
     }
     if(baseName && baseName != baseNameBuffer) {
         uprv_free(baseName);
         baseName = NULL;
     }
     // 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 = canonicalize ?
             uloc_canonicalize(localeID, fullName, sizeof(fullNameBuffer), &err) :
             uloc_getName(localeID, fullName, sizeof(fullNameBuffer), &err);
         if(err == U_BUFFER_OVERFLOW_ERROR || length >= (int32_t)sizeof(fullNameBuffer)) {
             /*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 = canonicalize ?
                 uloc_canonicalize(localeID, fullName, length+1, &err) :
                 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/canonicalize() 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] = (int32_t)(separator - field[fieldIdx-1]);
             fieldIdx++;
         }
         // variant may contain @foo or .foo POSIX cruft; remove it
         separator = uprv_strchr(field[fieldIdx-1], '@');
         char* sep2 = uprv_strchr(field[fieldIdx-1], '.');
         if (separator!=NULL || sep2!=NULL) {
             if (separator==NULL || (sep2!=NULL && separator > sep2)) {
                 separator = sep2;
             }
             fieldLen[fieldIdx-1] = (int32_t)(separator - field[fieldIdx-1]);
         } else {
             fieldLen[fieldIdx-1] = length - (int32_t)(field[fieldIdx-1] - fullName);
         }
         if (fieldLen[0] >= (int32_t)(sizeof(language)))
         {
             break; // error: the language field is too long
         }
         variantField = 1; /* Usually the 2nd one, except when a script or country is also used. */
         if (fieldLen[0] > 0) {
             /* We have a language */
             uprv_memcpy(language, fullName, fieldLen[0]);
             language[fieldLen[0]] = 0;
         }
         if (fieldLen[1] == 4 && ISASCIIALPHA(field[1][0]) &&
                 ISASCIIALPHA(field[1][1]) && ISASCIIALPHA(field[1][2]) &&
                 ISASCIIALPHA(field[1][3])) {
             /* We have at least a script */
             uprv_memcpy(script, field[1], fieldLen[1]);
             script[fieldLen[1]] = 0;
             variantField++;
         }
         if (fieldLen[variantField] == 2 || fieldLen[variantField] == 3) {
             /* We have a country */
             uprv_memcpy(country, field[variantField], fieldLen[variantField]);
             country[fieldLen[variantField]] = 0;
             variantField++;
         } else if (fieldLen[variantField] == 0) {
             variantField++; /* script or country empty but variant in next field (i.e. en__POSIX) */
         }
         if (fieldLen[variantField] > 0) {
             /* We have a variant */
             variantBegin = (int32_t)(field[variantField] - fullName);
         }
         // successful end of init()
         return *this;
     } while(0); /*loop doesn't iterate*/
     // when an error occurs, then set this object to "bogus" (there is no UErrorCode here)
     setToBogus();
     return *this;
 }
 int32_t
 Locale::hashCode() const
 {
     return ustr_hashCharsN(fullName, uprv_strlen(fullName));
 }
 void
 Locale::setToBogus() {
     /* Free our current storage */
     if(fullName != fullNameBuffer) {
         uprv_free(fullName);
         fullName = fullNameBuffer;
     }
     if(baseName && baseName != baseNameBuffer) {
         uprv_free(baseName);
         baseName = NULL;
     }
     *fullNameBuffer = 0;
     *language = 0;
     *script = 0;
     *country = 0;
     fIsBogus = TRUE;
 }
 const Locale& U_EXPORT2
 Locale::getDefault()
 {
     {
         Mutex lock(&gDefaultLocaleMutex);
         if (gDefaultLocale != NULL) {
             return *gDefaultLocale;
         }
     }
     UErrorCode status = U_ZERO_ERROR;
     return *locale_set_default_internal(NULL, status);
 }
 void U_EXPORT2
 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, status);
 }
 Locale U_EXPORT2
 Locale::createFromName (const char *name)
 {
     if (name) {
         Locale l("");
         l.init(name, FALSE);
         return l;
     }
     else {
         return getDefault();
     }
 }
 Locale U_EXPORT2
 Locale::createCanonical(const char* name) {
     Locale loc("");
     loc.init(name, TRUE);
     return loc;
 }
 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);
 }
 const char* const* U_EXPORT2 Locale::getISOCountries()
 {
     return uloc_getISOCountries();
 }
 const char* const* U_EXPORT2 Locale::getISOLanguages()
 {
     return uloc_getISOLanguages();
 }
 // Set the locale's data based on a posix id.
 void Locale::setFromPOSIXID(const char *posixID)
 {
     init(posixID, TRUE);
 }
 const Locale & U_EXPORT2
 Locale::getRoot(void)
 {
     return getLocale(eROOT);
 }
 const Locale & U_EXPORT2
 Locale::getEnglish(void)
 {
     return getLocale(eENGLISH);
 }
 const Locale & U_EXPORT2
 Locale::getFrench(void)
 {
     return getLocale(eFRENCH);
 }
 const Locale & U_EXPORT2
 Locale::getGerman(void)
 {
     return getLocale(eGERMAN);
 }
 const Locale & U_EXPORT2
 Locale::getItalian(void)
 {
     return getLocale(eITALIAN);
 }
 const Locale & U_EXPORT2
 Locale::getJapanese(void)
 {
     return getLocale(eJAPANESE);
 }
 const Locale & U_EXPORT2
 Locale::getKorean(void)
 {
     return getLocale(eKOREAN);
 }
 const Locale & U_EXPORT2
 Locale::getChinese(void)
 {
     return getLocale(eCHINESE);
 }
 const Locale & U_EXPORT2
 Locale::getSimplifiedChinese(void)
 {
     return getLocale(eCHINA);
 }
 const Locale & U_EXPORT2
 Locale::getTraditionalChinese(void)
 {
     return getLocale(eTAIWAN);
 }
 const Locale & U_EXPORT2
 Locale::getFrance(void)
 {
     return getLocale(eFRANCE);
 }
 const Locale & U_EXPORT2
 Locale::getGermany(void)
 {
     return getLocale(eGERMANY);
 }
 const Locale & U_EXPORT2
 Locale::getItaly(void)
 {
     return getLocale(eITALY);
 }
 const Locale & U_EXPORT2
 Locale::getJapan(void)
 {
     return getLocale(eJAPAN);
 }
 const Locale & U_EXPORT2
 Locale::getKorea(void)
 {
     return getLocale(eKOREA);
 }
 const Locale & U_EXPORT2
 Locale::getChina(void)
 {
     return getLocale(eCHINA);
 }
 const Locale & U_EXPORT2
 Locale::getPRC(void)
 {
     return getLocale(eCHINA);
 }
 const Locale & U_EXPORT2
 Locale::getTaiwan(void)
 {
     return getLocale(eTAIWAN);
 }
 const Locale & U_EXPORT2
 Locale::getUK(void)
 {
     return getLocale(eUK);
 }
 const Locale & U_EXPORT2
 Locale::getUS(void)
 {
     return getLocale(eUS);
 }
 const Locale & U_EXPORT2
 Locale::getCanada(void)
 {
     return getLocale(eCANADA);
 }
 const Locale & U_EXPORT2
 Locale::getCanadaFrench(void)
 {
     return getLocale(eCANADA_FRENCH);
 }
 const Locale &
 Locale::getLocale(int locid)
 {
     Locale *localeCache = getLocaleCache();
     U_ASSERT((locid < eMAX_LOCALES)&&(locid>=0));
     if (localeCache == NULL) {
         // Failure allocating the locale cache.
         //   The best we can do is return a NULL reference.
         locid = 0;
     }
     return localeCache[locid]; /*operating on NULL*/
 }
 /*
 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[(int)eMAX_LOCALES];
         if (tLocaleCache == NULL) {
             return NULL;
         }
 	tLocaleCache[eROOT]          = Locale("");
         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;
             ucln_common_registerCleanup(UCLN_COMMON_LOCALE, locale_cleanup);
         }
         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;
     int32_t length;
     UnicodeString currUSKey;
     static const char fgClassID;/* Warning this is used beyond the typical RTTI usage. */
 public:
     static UClassID U_EXPORT2 getStaticClassID(void) { return (UClassID)&fgClassID; }
     virtual UClassID getDynamicClassID(void) const { return getStaticClassID(); }
 public:
     KeywordEnumeration(const char *keys, int32_t keywordLen, int32_t currentIndex, UErrorCode &status)
         : keywords((char *)&fgClassID), current((char *)&fgClassID), length(0) {
         if(U_SUCCESS(status) && keywordLen != 0) {
             if(keys == NULL || keywordLen < 0) {
                 status = U_ILLEGAL_ARGUMENT_ERROR;
             } else {
                 keywords = (char *)uprv_malloc(keywordLen+1);
                 if (keywords == NULL) {
                     status = U_MEMORY_ALLOCATION_ERROR;
                 }
                 else {
                     uprv_memcpy(keywords, keys, keywordLen);
                     keywords[keywordLen] = 0;
                     current = keywords + currentIndex;
                     length = keywordLen;
                 }
             }
         }
     }
     virtual ~KeywordEnumeration();
     virtual StringEnumeration * clone() const
     {
         UErrorCode status = U_ZERO_ERROR;
         return new KeywordEnumeration(keywords, length, (int32_t)(current - keywords), status);
     }
     virtual int32_t count(UErrorCode &/*status*/) const {
         char *kw = keywords;
         int32_t result = 0;
         while(*kw) {
             result++;
             kw += uprv_strlen(kw)+1;
         }
         return result;
     }
     virtual const char* next(int32_t* resultLength, UErrorCode& status) {
         const char* result;
         int32_t len;
         if(U_SUCCESS(status) && *current != 0) {
             result = current;
             len = (int32_t)uprv_strlen(current);
             current += len+1;
             if(resultLength != NULL) {
                 *resultLength = len;
             }
         } 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*/) {
         current = keywords;
     }
 };
 const char KeywordEnumeration::fgClassID = '\0';
 KeywordEnumeration::~KeywordEnumeration() {
     uprv_free(keywords);
 }
 StringEnumeration *
 Locale::createKeywords(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 > variantStart) {
             int32_t keyLen = locale_getKeywords(variantStart+1, '@', keywords, keywordCapacity, NULL, 0, NULL, FALSE, &status);
             if(keyLen) {
                 result = new KeywordEnumeration(keywords, keyLen, 0, 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);
 }
 void
 Locale::setKeywordValue(const char* keywordName, const char* keywordValue, UErrorCode &status)
 {
     uloc_setKeywordValue(keywordName, keywordValue, fullName, ULOC_FULLNAME_CAPACITY, &status);
 }
 const char *
 Locale::getBaseName() const
 {
     // lazy init
     UErrorCode status = U_ZERO_ERROR;
     // semantically const
     if(baseName == 0) {
         ((Locale *)this)->baseName = ((Locale *)this)->baseNameBuffer;
         int32_t baseNameSize = uloc_getBaseName(fullName, baseName, ULOC_FULLNAME_CAPACITY, &status);
         if(baseNameSize >= ULOC_FULLNAME_CAPACITY) {
             ((Locale *)this)->baseName = (char *)uprv_malloc(sizeof(char) * baseNameSize + 1);
             if (baseName == NULL) {
                 return baseName;
             }
             uloc_getBaseName(fullName, baseName, baseNameSize+1, &status);
         }
         baseName[baseNameSize] = 0;
         // the computation of variantBegin leaves it equal to the length
         // of fullName if there is no variant.  It should instead be
         // the length of the baseName.  Patch around this for now.
         if (variantBegin == (int32_t)uprv_strlen(fullName)) {
           ((Locale*)this)->variantBegin = baseNameSize;
         }
     }
     return baseName;
 }
 //eof
 U_NAMESPACE_END

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intl/icu/source/common/locid.cpp@129ffea94266 (annotated)

intl/icu/source/common/locid.cpp