/
locid.cpp
2547 lines (2262 loc) · 76.3 KB
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locid.cpp
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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (C) 1997-2016, 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 <utility>
#include "unicode/bytestream.h"
#include "unicode/locid.h"
#include "unicode/localebuilder.h"
#include "unicode/strenum.h"
#include "unicode/stringpiece.h"
#include "unicode/uloc.h"
#include "unicode/ures.h"
#include "bytesinkutil.h"
#include "charstr.h"
#include "charstrmap.h"
#include "cmemory.h"
#include "cstring.h"
#include "mutex.h"
#include "putilimp.h"
#include "uassert.h"
#include "ucln_cmn.h"
#include "uhash.h"
#include "ulocimp.h"
#include "umutex.h"
#include "uniquecharstr.h"
#include "ustr_imp.h"
#include "uvector.h"
U_CDECL_BEGIN
static UBool U_CALLCONV locale_cleanup(void);
U_CDECL_END
U_NAMESPACE_BEGIN
static Locale *gLocaleCache = NULL;
static UInitOnce gLocaleCacheInitOnce = U_INITONCE_INITIALIZER;
// gDefaultLocaleMutex protects all access to gDefaultLocalesHashT and gDefaultLocale.
static UMutex gDefaultLocaleMutex;
static UHashtable *gDefaultLocalesHashT = NULL;
static Locale *gDefaultLocale = NULL;
/**
* \def ULOC_STRING_LIMIT
* strings beyond this value crash in CharString
*/
#define ULOC_STRING_LIMIT 357913941
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_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
delete [] gLocaleCache;
gLocaleCache = NULL;
gLocaleCacheInitOnce.reset();
if (gDefaultLocalesHashT) {
uhash_close(gDefaultLocalesHashT); // Automatically deletes all elements, using deleter func.
gDefaultLocalesHashT = NULL;
}
gDefaultLocale = NULL;
return TRUE;
}
static void U_CALLCONV locale_init(UErrorCode &status) {
U_NAMESPACE_USE
U_ASSERT(gLocaleCache == NULL);
gLocaleCache = new Locale[(int)eMAX_LOCALES];
if (gLocaleCache == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
return;
}
ucln_common_registerCleanup(UCLN_COMMON_LOCALE, locale_cleanup);
gLocaleCache[eROOT] = Locale("");
gLocaleCache[eENGLISH] = Locale("en");
gLocaleCache[eFRENCH] = Locale("fr");
gLocaleCache[eGERMAN] = Locale("de");
gLocaleCache[eITALIAN] = Locale("it");
gLocaleCache[eJAPANESE] = Locale("ja");
gLocaleCache[eKOREAN] = Locale("ko");
gLocaleCache[eCHINESE] = Locale("zh");
gLocaleCache[eFRANCE] = Locale("fr", "FR");
gLocaleCache[eGERMANY] = Locale("de", "DE");
gLocaleCache[eITALY] = Locale("it", "IT");
gLocaleCache[eJAPAN] = Locale("ja", "JP");
gLocaleCache[eKOREA] = Locale("ko", "KR");
gLocaleCache[eCHINA] = Locale("zh", "CN");
gLocaleCache[eTAIWAN] = Locale("zh", "TW");
gLocaleCache[eUK] = Locale("en", "GB");
gLocaleCache[eUS] = Locale("en", "US");
gLocaleCache[eCANADA] = Locale("en", "CA");
gLocaleCache[eCANADA_FRENCH] = Locale("fr", "CA");
}
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
}
CharString localeNameBuf;
{
CharStringByteSink sink(&localeNameBuf);
if (canonicalize) {
ulocimp_canonicalize(id, sink, &status);
} else {
ulocimp_getName(id, sink, &status);
}
}
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.data());
if (newDefault == NULL) {
newDefault = new Locale(Locale::eBOGUS);
if (newDefault == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
return gDefaultLocale;
}
newDefault->init(localeNameBuf.data(), 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 '_'
#define NULL_CHAR '\0'
Locale::~Locale()
{
if (baseName != fullName) {
uprv_free(baseName);
}
baseName = NULL;
/*if fullName is on the heap, we free it*/
if (fullName != fullNameBuffer)
{
uprv_free(fullName);
fullName = 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
{
UErrorCode status = U_ZERO_ERROR;
int32_t size = 0;
int32_t lsize = 0;
int32_t csize = 0;
int32_t vsize = 0;
int32_t ksize = 0;
// Calculate the size of the resulting string.
// Language
if ( newLanguage != NULL )
{
lsize = (int32_t)uprv_strlen(newLanguage);
if ( lsize < 0 || lsize > ULOC_STRING_LIMIT ) { // int32 wrap
setToBogus();
return;
}
size = lsize;
}
CharString togo(newLanguage, lsize, status); // start with newLanguage
// _Country
if ( newCountry != NULL )
{
csize = (int32_t)uprv_strlen(newCountry);
if ( csize < 0 || csize > ULOC_STRING_LIMIT ) { // int32 wrap
setToBogus();
return;
}
size += csize;
}
// _Variant
if ( newVariant != NULL )
{
// remove leading _'s
while(newVariant[0] == SEP_CHAR)
{
newVariant++;
}
// remove trailing _'s
vsize = (int32_t)uprv_strlen(newVariant);
if ( vsize < 0 || vsize > ULOC_STRING_LIMIT ) { // int32 wrap
setToBogus();
return;
}
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);
if ( ksize < 0 || ksize > ULOC_STRING_LIMIT ) {
setToBogus();
return;
}
size += ksize + 1;
}
// NOW we have the full locale string..
// Now, copy it back.
// newLanguage is already copied
if ( ( vsize != 0 ) || (csize != 0) ) // at least: __v
{ // ^
togo.append(SEP_CHAR, status);
}
if ( csize != 0 )
{
togo.append(newCountry, status);
}
if ( vsize != 0)
{
togo.append(SEP_CHAR, status)
.append(newVariant, vsize, status);
}
if ( ksize != 0)
{
if (uprv_strchr(newKeywords, '=')) {
togo.append('@', status); /* keyword parsing */
}
else {
togo.append('_', status); /* Variant parsing with a script */
if ( vsize == 0) {
togo.append('_', status); /* No country found */
}
}
togo.append(newKeywords, status);
}
if (U_FAILURE(status)) {
// Something went wrong with appending, etc.
setToBogus();
return;
}
// Parse it, because for example 'language' might really be a complete
// string.
init(togo.data(), FALSE);
}
}
Locale::Locale(const Locale &other)
: UObject(other), fullName(fullNameBuffer), baseName(NULL)
{
*this = other;
}
Locale::Locale(Locale&& other) U_NOEXCEPT
: UObject(other), fullName(fullNameBuffer), baseName(fullName) {
*this = std::move(other);
}
Locale& Locale::operator=(const Locale& other) {
if (this == &other) {
return *this;
}
setToBogus();
if (other.fullName == other.fullNameBuffer) {
uprv_strcpy(fullNameBuffer, other.fullNameBuffer);
} else if (other.fullName == nullptr) {
fullName = nullptr;
} else {
fullName = uprv_strdup(other.fullName);
if (fullName == nullptr) return *this;
}
if (other.baseName == other.fullName) {
baseName = fullName;
} else if (other.baseName != nullptr) {
baseName = uprv_strdup(other.baseName);
if (baseName == nullptr) return *this;
}
uprv_strcpy(language, other.language);
uprv_strcpy(script, other.script);
uprv_strcpy(country, other.country);
variantBegin = other.variantBegin;
fIsBogus = other.fIsBogus;
return *this;
}
Locale& Locale::operator=(Locale&& other) U_NOEXCEPT {
if (baseName != fullName) uprv_free(baseName);
if (fullName != fullNameBuffer) uprv_free(fullName);
if (other.fullName == other.fullNameBuffer) {
uprv_strcpy(fullNameBuffer, other.fullNameBuffer);
fullName = fullNameBuffer;
} else {
fullName = other.fullName;
}
if (other.baseName == other.fullName) {
baseName = fullName;
} else {
baseName = other.baseName;
}
uprv_strcpy(language, other.language);
uprv_strcpy(script, other.script);
uprv_strcpy(country, other.country);
variantBegin = other.variantBegin;
fIsBogus = other.fIsBogus;
other.baseName = other.fullName = other.fullNameBuffer;
return *this;
}
Locale *
Locale::clone() const {
return new Locale(*this);
}
UBool
Locale::operator==( const Locale& other) const
{
return (uprv_strcmp(other.fullName, fullName) == 0);
}
namespace {
UInitOnce gKnownCanonicalizedInitOnce = U_INITONCE_INITIALIZER;
UHashtable *gKnownCanonicalized = nullptr;
static const char* const KNOWN_CANONICALIZED[] = {
"c",
// Commonly used locales known are already canonicalized
"af", "af_ZA", "am", "am_ET", "ar", "ar_001", "as", "as_IN", "az", "az_AZ",
"be", "be_BY", "bg", "bg_BG", "bn", "bn_IN", "bs", "bs_BA", "ca", "ca_ES",
"cs", "cs_CZ", "cy", "cy_GB", "da", "da_DK", "de", "de_DE", "el", "el_GR",
"en", "en_GB", "en_US", "es", "es_419", "es_ES", "et", "et_EE", "eu",
"eu_ES", "fa", "fa_IR", "fi", "fi_FI", "fil", "fil_PH", "fr", "fr_FR",
"ga", "ga_IE", "gl", "gl_ES", "gu", "gu_IN", "he", "he_IL", "hi", "hi_IN",
"hr", "hr_HR", "hu", "hu_HU", "hy", "hy_AM", "id", "id_ID", "is", "is_IS",
"it", "it_IT", "ja", "ja_JP", "jv", "jv_ID", "ka", "ka_GE", "kk", "kk_KZ",
"km", "km_KH", "kn", "kn_IN", "ko", "ko_KR", "ky", "ky_KG", "lo", "lo_LA",
"lt", "lt_LT", "lv", "lv_LV", "mk", "mk_MK", "ml", "ml_IN", "mn", "mn_MN",
"mr", "mr_IN", "ms", "ms_MY", "my", "my_MM", "nb", "nb_NO", "ne", "ne_NP",
"nl", "nl_NL", "or", "or_IN", "pa", "pa_IN", "pl", "pl_PL", "ps", "ps_AF",
"pt", "pt_BR", "pt_PT", "ro", "ro_RO", "ru", "ru_RU", "sd", "sd_IN", "si",
"si_LK", "sk", "sk_SK", "sl", "sl_SI", "so", "so_SO", "sq", "sq_AL", "sr",
"sr_Cyrl_RS", "sr_Latn", "sr_RS", "sv", "sv_SE", "sw", "sw_TZ", "ta",
"ta_IN", "te", "te_IN", "th", "th_TH", "tk", "tk_TM", "tr", "tr_TR", "uk",
"uk_UA", "ur", "ur_PK", "uz", "uz_UZ", "vi", "vi_VN", "yue", "yue_Hant",
"yue_Hant_HK", "yue_HK", "zh", "zh_CN", "zh_Hans", "zh_Hans_CN", "zh_Hant",
"zh_Hant_TW", "zh_TW", "zu", "zu_ZA"
};
static UBool U_CALLCONV cleanupKnownCanonicalized() {
gKnownCanonicalizedInitOnce.reset();
if (gKnownCanonicalized) { uhash_close(gKnownCanonicalized); }
return TRUE;
}
static void U_CALLCONV loadKnownCanonicalized(UErrorCode &status) {
ucln_common_registerCleanup(UCLN_COMMON_LOCALE_KNOWN_CANONICALIZED,
cleanupKnownCanonicalized);
LocalUHashtablePointer newKnownCanonicalizedMap(
uhash_open(uhash_hashChars, uhash_compareChars, nullptr, &status));
for (int32_t i = 0;
U_SUCCESS(status) && i < UPRV_LENGTHOF(KNOWN_CANONICALIZED);
i++) {
uhash_puti(newKnownCanonicalizedMap.getAlias(),
(void*)KNOWN_CANONICALIZED[i],
1, &status);
}
if (U_FAILURE(status)) {
return;
}
gKnownCanonicalized = newKnownCanonicalizedMap.orphan();
}
class AliasData;
/**
* A Builder class to build the alias data.
*/
class AliasDataBuilder {
public:
AliasDataBuilder() {
}
// Build the AliasData from resource.
AliasData* build(UErrorCode &status);
private:
void readAlias(UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
void (*checkType)(const char* type),
void (*checkReplacement)(const UnicodeString& replacement),
UErrorCode &status);
// Read the languageAlias data from alias to
// strings+types+replacementIndexes
// The number of record will be stored into length.
// Allocate length items for types, to store the type field.
// Allocate length items for replacementIndexes,
// to store the index in the strings for the replacement script.
void readLanguageAlias(UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
UErrorCode &status);
// Read the scriptAlias data from alias to
// strings+types+replacementIndexes
// Allocate length items for types, to store the type field.
// Allocate length items for replacementIndexes,
// to store the index in the strings for the replacement script.
void readScriptAlias(UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length, UErrorCode &status);
// Read the territoryAlias data from alias to
// strings+types+replacementIndexes
// Allocate length items for types, to store the type field.
// Allocate length items for replacementIndexes,
// to store the index in the strings for the replacement script.
void readTerritoryAlias(UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length, UErrorCode &status);
// Read the variantAlias data from alias to
// strings+types+replacementIndexes
// Allocate length items for types, to store the type field.
// Allocate length items for replacementIndexes,
// to store the index in the strings for the replacement variant.
void readVariantAlias(UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length, UErrorCode &status);
};
/**
* A class to hold the Alias Data.
*/
class AliasData : public UMemory {
public:
static const AliasData* singleton(UErrorCode& status) {
if (U_FAILURE(status)) {
// Do not get into loadData if the status already has error.
return nullptr;
}
umtx_initOnce(AliasData::gInitOnce, &AliasData::loadData, status);
return gSingleton;
}
const CharStringMap& languageMap() const { return language; }
const CharStringMap& scriptMap() const { return script; }
const CharStringMap& territoryMap() const { return territory; }
const CharStringMap& variantMap() const { return variant; }
static void U_CALLCONV loadData(UErrorCode &status);
static UBool U_CALLCONV cleanup();
static UInitOnce gInitOnce;
private:
AliasData(CharStringMap languageMap,
CharStringMap scriptMap,
CharStringMap territoryMap,
CharStringMap variantMap,
CharString* strings)
: language(std::move(languageMap)),
script(std::move(scriptMap)),
territory(std::move(territoryMap)),
variant(std::move(variantMap)),
strings(strings) {
}
~AliasData() {
delete strings;
}
static const AliasData* gSingleton;
CharStringMap language;
CharStringMap script;
CharStringMap territory;
CharStringMap variant;
CharString* strings;
friend class AliasDataBuilder;
};
const AliasData* AliasData::gSingleton = nullptr;
UInitOnce AliasData::gInitOnce = U_INITONCE_INITIALIZER;
UBool U_CALLCONV
AliasData::cleanup()
{
gInitOnce.reset();
delete gSingleton;
return TRUE;
}
void
AliasDataBuilder::readAlias(
UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
void (*checkType)(const char* type),
void (*checkReplacement)(const UnicodeString& replacement),
UErrorCode &status) {
if (U_FAILURE(status)) {
return;
}
length = ures_getSize(alias);
const char** rawTypes = types.allocateInsteadAndCopy(length);
if (rawTypes == nullptr) {
status = U_MEMORY_ALLOCATION_ERROR;
return;
}
int32_t* rawIndexes = replacementIndexes.allocateInsteadAndCopy(length);
if (rawIndexes == nullptr) {
status = U_MEMORY_ALLOCATION_ERROR;
return;
}
int i = 0;
while (ures_hasNext(alias)) {
LocalUResourceBundlePointer res(
ures_getNextResource(alias, nullptr, &status));
const char* aliasFrom = ures_getKey(res.getAlias());
UnicodeString aliasTo =
ures_getUnicodeStringByKey(res.getAlias(), "replacement", &status);
checkType(aliasFrom);
checkReplacement(aliasTo);
rawTypes[i] = aliasFrom;
rawIndexes[i] = strings->add(aliasTo, status);
i++;
}
}
/**
* Read the languageAlias data from alias to strings+types+replacementIndexes.
* Allocate length items for types, to store the type field. Allocate length
* items for replacementIndexes, to store the index in the strings for the
* replacement language.
*/
void
AliasDataBuilder::readLanguageAlias(
UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
UErrorCode &status)
{
return readAlias(
alias, strings, types, replacementIndexes, length,
#if U_DEBUG
[](const char* type) {
// Assert the aliasFrom only contains the following possibilties
// language_REGION_variant
// language_REGION
// language_variant
// language
// und_variant
Locale test(type);
// Assert no script in aliasFrom
U_ASSERT(test.getScript()[0] == '\0');
// Assert when language is und, no REGION in aliasFrom.
U_ASSERT(test.getLanguage()[0] != '\0' || test.getCountry()[0] == '\0');
},
#else
[](const char*) {},
#endif
[](const UnicodeString&) {}, status);
}
/**
* Read the scriptAlias data from alias to strings+types+replacementIndexes.
* Allocate length items for types, to store the type field. Allocate length
* items for replacementIndexes, to store the index in the strings for the
* replacement script.
*/
void
AliasDataBuilder::readScriptAlias(
UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
UErrorCode &status)
{
return readAlias(
alias, strings, types, replacementIndexes, length,
#if U_DEBUG
[](const char* type) {
U_ASSERT(uprv_strlen(type) == 4);
},
[](const UnicodeString& replacement) {
U_ASSERT(replacement.length() == 4);
},
#else
[](const char*) {},
[](const UnicodeString&) { },
#endif
status);
}
/**
* Read the territoryAlias data from alias to strings+types+replacementIndexes.
* Allocate length items for types, to store the type field. Allocate length
* items for replacementIndexes, to store the index in the strings for the
* replacement regions.
*/
void
AliasDataBuilder::readTerritoryAlias(
UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
UErrorCode &status)
{
return readAlias(
alias, strings, types, replacementIndexes, length,
#if U_DEBUG
[](const char* type) {
U_ASSERT(uprv_strlen(type) == 2 || uprv_strlen(type) == 3);
},
#else
[](const char*) {},
#endif
[](const UnicodeString&) { },
status);
}
/**
* Read the variantAlias data from alias to strings+types+replacementIndexes.
* Allocate length items for types, to store the type field. Allocate length
* items for replacementIndexes, to store the index in the strings for the
* replacement variant.
*/
void
AliasDataBuilder::readVariantAlias(
UResourceBundle* alias,
UniqueCharStrings* strings,
LocalMemory<const char*>& types,
LocalMemory<int32_t>& replacementIndexes,
int32_t &length,
UErrorCode &status)
{
return readAlias(
alias, strings, types, replacementIndexes, length,
#if U_DEBUG
[](const char* type) {
U_ASSERT(uprv_strlen(type) >= 4 && uprv_strlen(type) <= 8);
U_ASSERT(uprv_strlen(type) != 4 ||
(type[0] >= '0' && type[0] <= '9'));
},
[](const UnicodeString& replacement) {
U_ASSERT(replacement.length() >= 4 && replacement.length() <= 8);
U_ASSERT(replacement.length() != 4 ||
(replacement.charAt(0) >= u'0' &&
replacement.charAt(0) <= u'9'));
},
#else
[](const char*) {},
[](const UnicodeString&) { },
#endif
status);
}
/**
* Initializes the alias data from the ICU resource bundles. The alias data
* contains alias of language, country, script and variants.
*
* If the alias data has already loaded, then this method simply returns without
* doing anything meaningful.
*/
void U_CALLCONV
AliasData::loadData(UErrorCode &status)
{
#ifdef LOCALE_CANONICALIZATION_DEBUG
UDate start = uprv_getRawUTCtime();
#endif // LOCALE_CANONICALIZATION_DEBUG
ucln_common_registerCleanup(UCLN_COMMON_LOCALE_ALIAS, cleanup);
AliasDataBuilder builder;
gSingleton = builder.build(status);
#ifdef LOCALE_CANONICALIZATION_DEBUG
UDate end = uprv_getRawUTCtime();
printf("AliasData::loadData took total %f ms\n", end - start);
#endif // LOCALE_CANONICALIZATION_DEBUG
}
/**
* Build the alias data from resources.
*/
AliasData*
AliasDataBuilder::build(UErrorCode &status) {
LocalUResourceBundlePointer metadata(
ures_openDirect(nullptr, "metadata", &status));
LocalUResourceBundlePointer metadataAlias(
ures_getByKey(metadata.getAlias(), "alias", nullptr, &status));
LocalUResourceBundlePointer languageAlias(
ures_getByKey(metadataAlias.getAlias(), "language", nullptr, &status));
LocalUResourceBundlePointer scriptAlias(
ures_getByKey(metadataAlias.getAlias(), "script", nullptr, &status));
LocalUResourceBundlePointer territoryAlias(
ures_getByKey(metadataAlias.getAlias(), "territory", nullptr, &status));
LocalUResourceBundlePointer variantAlias(
ures_getByKey(metadataAlias.getAlias(), "variant", nullptr, &status));
if (U_FAILURE(status)) {
return nullptr;
}
int32_t languagesLength = 0, scriptLength = 0, territoryLength = 0,
variantLength = 0;
// Read the languageAlias into languageTypes, languageReplacementIndexes
// and strings
UniqueCharStrings strings(status);
LocalMemory<const char*> languageTypes;
LocalMemory<int32_t> languageReplacementIndexes;
readLanguageAlias(languageAlias.getAlias(),
&strings,
languageTypes,
languageReplacementIndexes,
languagesLength,
status);
// Read the scriptAlias into scriptTypes, scriptReplacementIndexes
// and strings
LocalMemory<const char*> scriptTypes;
LocalMemory<int32_t> scriptReplacementIndexes;
readScriptAlias(scriptAlias.getAlias(),
&strings,
scriptTypes,
scriptReplacementIndexes,
scriptLength,
status);
// Read the territoryAlias into territoryTypes, territoryReplacementIndexes
// and strings
LocalMemory<const char*> territoryTypes;
LocalMemory<int32_t> territoryReplacementIndexes;
readTerritoryAlias(territoryAlias.getAlias(),
&strings,
territoryTypes,
territoryReplacementIndexes,
territoryLength, status);
// Read the variantAlias into variantTypes, variantReplacementIndexes
// and strings
LocalMemory<const char*> variantTypes;
LocalMemory<int32_t> variantReplacementIndexes;
readVariantAlias(variantAlias.getAlias(),
&strings,
variantTypes,
variantReplacementIndexes,
variantLength, status);
if (U_FAILURE(status)) {
return nullptr;
}
// We can only use strings after freeze it.
strings.freeze();
// Build the languageMap from languageTypes & languageReplacementIndexes
CharStringMap languageMap(490, status);
for (int32_t i = 0; U_SUCCESS(status) && i < languagesLength; i++) {
languageMap.put(languageTypes[i],
strings.get(languageReplacementIndexes[i]),
status);
}
// Build the scriptMap from scriptTypes & scriptReplacementIndexes
CharStringMap scriptMap(1, status);
for (int32_t i = 0; U_SUCCESS(status) && i < scriptLength; i++) {
scriptMap.put(scriptTypes[i],
strings.get(scriptReplacementIndexes[i]),
status);
}
// Build the territoryMap from territoryTypes & territoryReplacementIndexes
CharStringMap territoryMap(650, status);
for (int32_t i = 0; U_SUCCESS(status) && i < territoryLength; i++) {
territoryMap.put(territoryTypes[i],
strings.get(territoryReplacementIndexes[i]),
status);
}
// Build the variantMap from variantTypes & variantReplacementIndexes.
CharStringMap variantMap(2, status);
for (int32_t i = 0; U_SUCCESS(status) && i < variantLength; i++) {
variantMap.put(variantTypes[i],
strings.get(variantReplacementIndexes[i]),
status);
}
if (U_FAILURE(status)) {
return nullptr;
}