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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 ULOC.H
*
* Modification History:
*
* Date Name Description
* 04/01/97 aliu Creation.
* 08/22/98 stephen JDK 1.2 sync.
* 12/08/98 rtg New C API for Locale
* 03/30/99 damiba overhaul
* 03/31/99 helena Javadoc for uloc functions.
* 04/15/99 Madhu Updated Javadoc
********************************************************************************
*/
#ifndef ULOC_H
#define ULOC_H
#include "unicode/utypes.h"
#include "unicode/uenum.h"
/**
* \file
* \brief C API: Locale ID functionality similar to C++ class Locale
*
* <h2> ULoc C API for Locale </h2>
* A <code>Locale</code> represents a specific geographical, political,
* or cultural region. An operation that requires a <code>Locale</code> to perform
* its task is called <em>locale-sensitive</em> and uses the <code>Locale</code>
* to tailor information for the user. For example, displaying a number
* is a locale-sensitive operation--the number should be formatted
* according to the customs/conventions of the user's native country,
* region, or culture. In the C APIs, a locales is simply a const char string.
*
* <P>
* You create a <code>Locale</code> with one of the three options listed below.
* Each of the component is separated by '_' in the locale string.
* \htmlonly<blockquote>\endhtmlonly
* <pre>
* \code
* newLanguage
*
* newLanguage + newCountry
*
* newLanguage + newCountry + newVariant
* \endcode
* </pre>
* \htmlonly</blockquote>\endhtmlonly
* The first option is a valid <STRONG>ISO
* Language Code.</STRONG> These codes are the lower-case two-letter
* codes as defined by ISO-639.
* You can find a full list of these codes at a number of sites, such as:
* <BR><a href ="http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt">
* http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt</a>
*
* <P>
* The second option includes an additional <STRONG>ISO Country
* Code.</STRONG> These codes are the upper-case two-letter codes
* as defined by ISO-3166.
* You can find a full list of these codes at a number of sites, such as:
* <BR><a href="http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html">
* http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html</a>
*
* <P>
* The third option requires another additional information--the
* <STRONG>Variant.</STRONG>
* The Variant codes are vendor and browser-specific.
* For example, use WIN for Windows, MAC for Macintosh, and POSIX for POSIX.
* Where there are two variants, separate them with an underscore, and
* put the most important one first. For
* example, a Traditional Spanish collation might be referenced, with
* "ES", "ES", "Traditional_WIN".
*
* <P>
* Because a <code>Locale</code> is just an identifier for a region,
* no validity check is performed when you specify a <code>Locale</code>.
* If you want to see whether particular resources are available for the
* <code>Locale</code> you asked for, you must query those resources. For
* example, ask the <code>UNumberFormat</code> for the locales it supports
* using its <code>getAvailable</code> method.
* <BR><STRONG>Note:</STRONG> When you ask for a resource for a particular
* locale, you get back the best available match, not necessarily
* precisely what you asked for. For more information, look at
* <code>UResourceBundle</code>.
*
* <P>
* The <code>Locale</code> provides a number of convenient constants
* that you can use to specify the commonly used
* locales. For example, the following refers to a locale
* for the United States:
* \htmlonly<blockquote>\endhtmlonly
* <pre>
* \code
* ULOC_US
* \endcode
* </pre>
* \htmlonly</blockquote>\endhtmlonly
*
* <P>
* Once you've specified a locale you can query it for information about
* itself. Use <code>uloc_getCountry</code> to get the ISO Country Code and
* <code>uloc_getLanguage</code> to get the ISO Language Code. You can
* use <code>uloc_getDisplayCountry</code> to get the
* name of the country suitable for displaying to the user. Similarly,
* you can use <code>uloc_getDisplayLanguage</code> to get the name of
* the language suitable for displaying to the user. Interestingly,
* the <code>uloc_getDisplayXXX</code> methods are themselves locale-sensitive
* and have two versions: one that uses the default locale and one
* that takes a locale as an argument and displays the name or country in
* a language appropriate to that locale.
*
* <P>
* The ICU provides a number of services that perform locale-sensitive
* operations. For example, the <code>unum_xxx</code> functions format
* numbers, currency, or percentages in a locale-sensitive manner.
* </P>
* \htmlonly<blockquote>\endhtmlonly
* <pre>
* \code
* UErrorCode success = U_ZERO_ERROR;
* UNumberFormat *nf;
* const char* myLocale = "fr_FR";
*
* nf = unum_open( UNUM_DEFAULT, NULL, success );
* unum_close(nf);
* nf = unum_open( UNUM_CURRENCY, NULL, success );
* unum_close(nf);
* nf = unum_open( UNUM_PERCENT, NULL, success );
* unum_close(nf);
* \endcode
* </pre>
* \htmlonly</blockquote>\endhtmlonly
* Each of these methods has two variants; one with an explicit locale
* and one without; the latter using the default locale.
* \htmlonly<blockquote>\endhtmlonly
* <pre>
* \code
*
* nf = unum_open( UNUM_DEFAULT, myLocale, success );
* unum_close(nf);
* nf = unum_open( UNUM_CURRENCY, myLocale, success );
* unum_close(nf);
* nf = unum_open( UNUM_PERCENT, myLocale, success );
* unum_close(nf);
* \endcode
* </pre>
* \htmlonly</blockquote>\endhtmlonly
* A <code>Locale</code> is the mechanism for identifying the kind of services
* (<code>UNumberFormat</code>) that you would like to get. The locale is
* <STRONG>just</STRONG> a mechanism for identifying these services.
*
* <P>
* Each international service that performs locale-sensitive operations
* allows you
* to get all the available objects of that type. You can sift
* through these objects by language, country, or variant,
* and use the display names to present a menu to the user.
* For example, you can create a menu of all the collation objects
* suitable for a given language. Such classes implement these
* three class methods:
* \htmlonly<blockquote>\endhtmlonly
* <pre>
* \code
* const char* uloc_getAvailable(int32_t index);
* int32_t uloc_countAvailable();
* int32_t
* uloc_getDisplayName(const char* localeID,
* const char* inLocaleID,
* UChar* result,
* int32_t maxResultSize,
* UErrorCode* err);
*
* \endcode
* </pre>
* \htmlonly</blockquote>\endhtmlonly
* <P>
* Concerning POSIX/RFC1766 Locale IDs,
* the getLanguage/getCountry/getVariant/getName functions do understand
* the POSIX type form of language_COUNTRY.ENCODING\@VARIANT
* and if there is not an ICU-stype variant, uloc_getVariant() for example
* will return the one listed after the \@at sign. As well, the hyphen
* "-" is recognized as a country/variant separator similarly to RFC1766.
* So for example, "en-us" will be interpreted as en_US.
* As a result, uloc_getName() is far from a no-op, and will have the
* effect of converting POSIX/RFC1766 IDs into ICU form, although it does
* NOT map any of the actual codes (i.e. russian->ru) in any way.
* Applications should call uloc_getName() at the point where a locale ID
* is coming from an external source (user entry, OS, web browser)
* and pass the resulting string to other ICU functions. For example,
* don't use de-de\@EURO as an argument to resourcebundle.
*
* @see UResourceBundle
*/
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_CHINESE "zh"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_ENGLISH "en"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_FRENCH "fr"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_GERMAN "de"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_ITALIAN "it"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_JAPANESE "ja"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_KOREAN "ko"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_SIMPLIFIED_CHINESE "zh_CN"
/** Useful constant for this language. @stable ICU 2.0 */
#define ULOC_TRADITIONAL_CHINESE "zh_TW"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_CANADA "en_CA"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_CANADA_FRENCH "fr_CA"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_CHINA "zh_CN"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_PRC "zh_CN"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_FRANCE "fr_FR"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_GERMANY "de_DE"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_ITALY "it_IT"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_JAPAN "ja_JP"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_KOREA "ko_KR"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_TAIWAN "zh_TW"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_UK "en_GB"
/** Useful constant for this country/region. @stable ICU 2.0 */
#define ULOC_US "en_US"
/**
* Useful constant for the maximum size of the language part of a locale ID.
* (including the terminating NULL).
* @stable ICU 2.0
*/
#define ULOC_LANG_CAPACITY 12
/**
* Useful constant for the maximum size of the country part of a locale ID
* (including the terminating NULL).
* @stable ICU 2.0
*/
#define ULOC_COUNTRY_CAPACITY 4
/**
* Useful constant for the maximum size of the whole locale ID
* (including the terminating NULL and all keywords).
* @stable ICU 2.0
*/
#define ULOC_FULLNAME_CAPACITY 157
/**
* Useful constant for the maximum size of the script part of a locale ID
* (including the terminating NULL).
* @stable ICU 2.8
*/
#define ULOC_SCRIPT_CAPACITY 6
/**
* Useful constant for the maximum size of keywords in a locale
* @stable ICU 2.8
*/
#define ULOC_KEYWORDS_CAPACITY 96
/**
* Useful constant for the maximum total size of keywords and their values in a locale
* @stable ICU 2.8
*/
#define ULOC_KEYWORD_AND_VALUES_CAPACITY 100
/**
* Invariant character separating keywords from the locale string
* @stable ICU 2.8
*/
#define ULOC_KEYWORD_SEPARATOR '@'
/**
* Unicode code point for '@' separating keywords from the locale string.
* @see ULOC_KEYWORD_SEPARATOR
* @stable ICU 4.6
*/
#define ULOC_KEYWORD_SEPARATOR_UNICODE 0x40
/**
* Invariant character for assigning value to a keyword
* @stable ICU 2.8
*/
#define ULOC_KEYWORD_ASSIGN '='
/**
* Unicode code point for '=' for assigning value to a keyword.
* @see ULOC_KEYWORD_ASSIGN
* @stable ICU 4.6
*/
#define ULOC_KEYWORD_ASSIGN_UNICODE 0x3D
/**
* Invariant character separating keywords
* @stable ICU 2.8
*/
#define ULOC_KEYWORD_ITEM_SEPARATOR ';'
/**
* Unicode code point for ';' separating keywords
* @see ULOC_KEYWORD_ITEM_SEPARATOR
* @stable ICU 4.6
*/
#define ULOC_KEYWORD_ITEM_SEPARATOR_UNICODE 0x3B
/**
* Constants for *_getLocale()
* Allow user to select whether she wants information on
* requested, valid or actual locale.
* For example, a collator for "en_US_CALIFORNIA" was
* requested. In the current state of ICU (2.0),
* the requested locale is "en_US_CALIFORNIA",
* the valid locale is "en_US" (most specific locale supported by ICU)
* and the actual locale is "root" (the collation data comes unmodified
* from the UCA)
* The locale is considered supported by ICU if there is a core ICU bundle
* for that locale (although it may be empty).
* @stable ICU 2.1
*/
typedef enum {
/** This is locale the data actually comes from
* @stable ICU 2.1
*/
ULOC_ACTUAL_LOCALE = 0,
/** This is the most specific locale supported by ICU
* @stable ICU 2.1
*/
ULOC_VALID_LOCALE = 1,
#ifndef U_HIDE_DEPRECATED_API
/** This is the requested locale
* @deprecated ICU 2.8
*/
ULOC_REQUESTED_LOCALE = 2,
/**
* One more than the highest normal ULocDataLocaleType value.
* @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
*/
ULOC_DATA_LOCALE_TYPE_LIMIT = 3
#endif // U_HIDE_DEPRECATED_API
} ULocDataLocaleType;
#ifndef U_HIDE_SYSTEM_API
/**
* Gets ICU's default locale.
* The returned string is a snapshot in time, and will remain valid
* and unchanged even when uloc_setDefault() is called.
* The returned storage is owned by ICU, and must not be altered or deleted
* by the caller.
*
* @return the ICU default locale
* @system
* @stable ICU 2.0
*/
U_CAPI const char* U_EXPORT2
uloc_getDefault(void);
/**
* Sets ICU's default locale.
* By default (without calling this function), ICU's default locale will be based
* on information obtained from the underlying system environment.
* <p>
* Changes to ICU's default locale do not propagate back to the
* system environment.
* <p>
* Changes to ICU's default locale to not affect any ICU services that
* may already be open based on the previous default locale value.
*
* @param localeID the new ICU default locale. A value of NULL will try to get
* the system's default locale.
* @param status the error information if the setting of default locale fails
* @system
* @stable ICU 2.0
*/
U_CAPI void U_EXPORT2
uloc_setDefault(const char* localeID,
UErrorCode* status);
#endif /* U_HIDE_SYSTEM_API */
/**
* Gets the language code for the specified locale.
*
* @param localeID the locale to get the ISO language code with
* @param language the language code for localeID
* @param languageCapacity the size of the language buffer to store the
* language code with
* @param err error information if retrieving the language code failed
* @return the actual buffer size needed for the language code. If it's greater
* than languageCapacity, the returned language code will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getLanguage(const char* localeID,
char* language,
int32_t languageCapacity,
UErrorCode* err);
/**
* Gets the script code for the specified locale.
*
* @param localeID the locale to get the ISO language code with
* @param script the language code for localeID
* @param scriptCapacity the size of the language buffer to store the
* language code with
* @param err error information if retrieving the language code failed
* @return the actual buffer size needed for the language code. If it's greater
* than scriptCapacity, the returned language code will be truncated.
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getScript(const char* localeID,
char* script,
int32_t scriptCapacity,
UErrorCode* err);
/**
* Gets the country code for the specified locale.
*
* @param localeID the locale to get the country code with
* @param country the country code for localeID
* @param countryCapacity the size of the country buffer to store the
* country code with
* @param err error information if retrieving the country code failed
* @return the actual buffer size needed for the country code. If it's greater
* than countryCapacity, the returned country code will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getCountry(const char* localeID,
char* country,
int32_t countryCapacity,
UErrorCode* err);
/**
* Gets the variant code for the specified locale.
*
* @param localeID the locale to get the variant code with
* @param variant the variant code for localeID
* @param variantCapacity the size of the variant buffer to store the
* variant code with
* @param err error information if retrieving the variant code failed
* @return the actual buffer size needed for the variant code. If it's greater
* than variantCapacity, the returned variant code will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getVariant(const char* localeID,
char* variant,
int32_t variantCapacity,
UErrorCode* err);
/**
* Gets the full name for the specified locale.
* Note: This has the effect of 'canonicalizing' the ICU locale ID to
* a certain extent. Upper and lower case are set as needed.
* It does NOT map aliased names in any way.
* See the top of this header file.
* This API supports preflighting.
*
* @param localeID the locale to get the full name with
* @param name fill in buffer for the name without keywords.
* @param nameCapacity capacity of the fill in buffer.
* @param err error information if retrieving the full name failed
* @return the actual buffer size needed for the full name. If it's greater
* than nameCapacity, the returned full name will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getName(const char* localeID,
char* name,
int32_t nameCapacity,
UErrorCode* err);
/**
* Gets the full name for the specified locale.
* Note: This has the effect of 'canonicalizing' the string to
* a certain extent. Upper and lower case are set as needed,
* and if the components were in 'POSIX' format they are changed to
* ICU format. It does NOT map aliased names in any way.
* See the top of this header file.
*
* @param localeID the locale to get the full name with
* @param name the full name for localeID
* @param nameCapacity the size of the name buffer to store the
* full name with
* @param err error information if retrieving the full name failed
* @return the actual buffer size needed for the full name. If it's greater
* than nameCapacity, the returned full name will be truncated.
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_canonicalize(const char* localeID,
char* name,
int32_t nameCapacity,
UErrorCode* err);
/**
* Gets the ISO language code for the specified locale.
*
* @param localeID the locale to get the ISO language code with
* @return language the ISO language code for localeID
* @stable ICU 2.0
*/
U_CAPI const char* U_EXPORT2
uloc_getISO3Language(const char* localeID);
/**
* Gets the ISO country code for the specified locale.
*
* @param localeID the locale to get the ISO country code with
* @return country the ISO country code for localeID
* @stable ICU 2.0
*/
U_CAPI const char* U_EXPORT2
uloc_getISO3Country(const char* localeID);
/**
* Gets the Win32 LCID value for the specified locale.
* If the ICU locale is not recognized by Windows, 0 will be returned.
*
* LCIDs were deprecated with Windows Vista and Microsoft recommends
* that developers use BCP47 style tags instead (uloc_toLanguageTag).
*
* @param localeID the locale to get the Win32 LCID value with
* @return country the Win32 LCID for localeID
* @stable ICU 2.0
*/
U_CAPI uint32_t U_EXPORT2
uloc_getLCID(const char* localeID);
/**
* Gets the language name suitable for display for the specified locale.
*
* @param locale the locale to get the ISO language code with
* @param displayLocale Specifies the locale to be used to display the name. In
* other words, if the locale's language code is "en", passing
* Locale::getFrench() for inLocale would result in "Anglais",
* while passing Locale::getGerman() for inLocale would result
* in "Englisch".
* @param language the displayable language code for localeID
* @param languageCapacity the size of the language buffer to store the
* displayable language code with.
* @param status error information if retrieving the displayable language code
* failed. U_USING_DEFAULT_WARNING indicates that no data was
* found from the locale resources and a case canonicalized
* language code is placed into language as fallback.
* @return the actual buffer size needed for the displayable language code. If
* it's greater than languageCapacity, the returned language
* code will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayLanguage(const char* locale,
const char* displayLocale,
UChar* language,
int32_t languageCapacity,
UErrorCode* status);
/**
* Gets the script name suitable for display for the specified locale.
*
* @param locale the locale to get the displayable script code with. NULL may be
* used to specify the default.
* @param displayLocale Specifies the locale to be used to display the name. In
* other words, if the locale's language code is "en", passing
* Locale::getFrench() for inLocale would result in "", while
* passing Locale::getGerman() for inLocale would result in "".
* NULL may be used to specify the default.
* @param script the displayable script for the localeID.
* @param scriptCapacity the size of the script buffer to store the displayable
* script code with.
* @param status error information if retrieving the displayable script code
* failed. U_USING_DEFAULT_WARNING indicates that no data was
* found from the locale resources and a case canonicalized
* script code is placed into script as fallback.
* @return the actual buffer size needed for the displayable script code. If
* it's greater than scriptCapacity, the returned displayable
* script code will be truncated.
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayScript(const char* locale,
const char* displayLocale,
UChar* script,
int32_t scriptCapacity,
UErrorCode* status);
/**
* Gets the country name suitable for display for the specified locale.
* Warning: this is for the region part of a valid locale ID; it cannot just be
* the region code (like "FR"). To get the display name for a region alone, or
* for other options, use ULocaleDisplayNames instead.
*
* @param locale the locale to get the displayable country code with. NULL may
* be used to specify the default.
* @param displayLocale Specifies the locale to be used to display the name. In
* other words, if the locale's language code is "en", passing
* Locale::getFrench() for inLocale would result in "Anglais",
* while passing Locale::getGerman() for inLocale would result
* in "Englisch". NULL may be used to specify the default.
* @param country the displayable country code for localeID.
* @param countryCapacity the size of the country buffer to store the
* displayable country code with.
* @param status error information if retrieving the displayable country code
* failed. U_USING_DEFAULT_WARNING indicates that no data was
* found from the locale resources and a case canonicalized
* country code is placed into country as fallback.
* @return the actual buffer size needed for the displayable country code. If
* it's greater than countryCapacity, the returned displayable
* country code will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayCountry(const char* locale,
const char* displayLocale,
UChar* country,
int32_t countryCapacity,
UErrorCode* status);
/**
* Gets the variant name suitable for display for the specified locale.
*
* @param locale the locale to get the displayable variant code with. NULL may
* be used to specify the default.
* @param displayLocale Specifies the locale to be used to display the name. In
* other words, if the locale's language code is "en", passing
* Locale::getFrench() for inLocale would result in "Anglais",
* while passing Locale::getGerman() for inLocale would result
* in "Englisch". NULL may be used to specify the default.
* @param variant the displayable variant code for localeID.
* @param variantCapacity the size of the variant buffer to store the
* displayable variant code with.
* @param status error information if retrieving the displayable variant code
* failed. U_USING_DEFAULT_WARNING indicates that no data was
* found from the locale resources and a case canonicalized
* variant code is placed into variant as fallback.
* @return the actual buffer size needed for the displayable variant code. If
* it's greater than variantCapacity, the returned displayable
* variant code will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayVariant(const char* locale,
const char* displayLocale,
UChar* variant,
int32_t variantCapacity,
UErrorCode* status);
/**
* Gets the keyword name suitable for display for the specified locale. E.g:
* for the locale string de_DE\@collation=PHONEBOOK, this API gets the display
* string for the keyword collation.
* Usage:
* <code>
* UErrorCode status = U_ZERO_ERROR;
* const char* keyword =NULL;
* int32_t keywordLen = 0;
* int32_t keywordCount = 0;
* UChar displayKeyword[256];
* int32_t displayKeywordLen = 0;
* UEnumeration* keywordEnum = uloc_openKeywords("de_DE@collation=PHONEBOOK;calendar=TRADITIONAL", &status);
* for(keywordCount = uenum_count(keywordEnum, &status); keywordCount > 0 ; keywordCount--){
* if(U_FAILURE(status)){
* ...something went wrong so handle the error...
* break;
* }
* // the uenum_next returns NUL terminated string
* keyword = uenum_next(keywordEnum, &keywordLen, &status);
* displayKeywordLen = uloc_getDisplayKeyword(keyword, "en_US", displayKeyword, 256);
* ... do something interesting .....
* }
* uenum_close(keywordEnum);
* </code>
* @param keyword The keyword whose display string needs to be returned.
* @param displayLocale Specifies the locale to be used to display the name. In other words,
* if the locale's language code is "en", passing Locale::getFrench() for
* inLocale would result in "Anglais", while passing Locale::getGerman()
* for inLocale would result in "Englisch". NULL may be used to specify the default.
* @param dest the buffer to which the displayable keyword should be written.
* @param destCapacity The size of the buffer (number of UChars). If it is 0, then
* dest may be NULL and the function will only return the length of the
* result without writing any of the result string (pre-flighting).
* @param status error information if retrieving the displayable string failed.
* Should not be NULL and should not indicate failure on entry.
* U_USING_DEFAULT_WARNING indicates that no data was found from the locale
* resources and the keyword is placed into dest as fallback.
* @return the actual buffer size needed for the displayable variant code.
* @see #uloc_openKeywords
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayKeyword(const char* keyword,
const char* displayLocale,
UChar* dest,
int32_t destCapacity,
UErrorCode* status);
/**
* Gets the value of the keyword suitable for display for the specified locale.
* E.g: for the locale string de_DE\@collation=PHONEBOOK, this API gets the display
* string for PHONEBOOK, in the display locale, when "collation" is specified as the keyword.
*
* @param locale The locale to get the displayable variant code with. NULL may be used to specify the default.
* @param keyword The keyword for whose value should be used.
* @param displayLocale Specifies the locale to be used to display the name. In other words,
* if the locale's language code is "en", passing Locale::getFrench() for
* inLocale would result in "Anglais", while passing Locale::getGerman()
* for inLocale would result in "Englisch". NULL may be used to specify the default.
* @param dest the buffer to which the displayable keyword should be written.
* @param destCapacity The size of the buffer (number of UChars). If it is 0, then
* dest may be NULL and the function will only return the length of the
* result without writing any of the result string (pre-flighting).
* @param status error information if retrieving the displayable string failed.
* Should not be NULL and must not indicate failure on entry.
* U_USING_DEFAULT_WARNING indicates that no data was found from the locale
* resources and the value of the keyword is placed into dest as fallback.
* @return the actual buffer size needed for the displayable variant code.
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayKeywordValue( const char* locale,
const char* keyword,
const char* displayLocale,
UChar* dest,
int32_t destCapacity,
UErrorCode* status);
/**
* Gets the full name suitable for display for the specified locale.
*
* @param localeID the locale to get the displayable name with. NULL may be used to specify the default.
* @param inLocaleID Specifies the locale to be used to display the name. In other words,
* if the locale's language code is "en", passing Locale::getFrench() for
* inLocale would result in "Anglais", while passing Locale::getGerman()
* for inLocale would result in "Englisch". NULL may be used to specify the default.
* @param result the displayable name for localeID
* @param maxResultSize the size of the name buffer to store the
* displayable full name with
* @param err error information if retrieving the displayable name failed
* @return the actual buffer size needed for the displayable name. If it's greater
* than maxResultSize, the returned displayable name will be truncated.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getDisplayName(const char* localeID,
const char* inLocaleID,
UChar* result,
int32_t maxResultSize,
UErrorCode* err);
/**
* Gets the specified locale from a list of available locales.
*
* This method corresponds to uloc_openAvailableByType called with the
* ULOC_AVAILABLE_DEFAULT type argument.
*
* The return value is a pointer to an item of a locale name array. Both this
* array and the pointers it contains are owned by ICU and should not be
* deleted or written through by the caller. The locale name is terminated by
* a null pointer.
*
* @param n the specific locale name index of the available locale list;
* should not exceed the number returned by uloc_countAvailable.
* @return a specified locale name of all available locales
* @stable ICU 2.0
*/
U_CAPI const char* U_EXPORT2
uloc_getAvailable(int32_t n);
/**
* Gets the size of the all available locale list.
*
* @return the size of the locale list
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2 uloc_countAvailable(void);
/**
* Types for uloc_getAvailableByType and uloc_countAvailableByType.
*
* @stable ICU 65
*/
typedef enum ULocAvailableType {
/**
* Locales that return data when passed to ICU APIs,
* but not including legacy or alias locales.
*
* @stable ICU 65
*/
ULOC_AVAILABLE_DEFAULT,
/**
* Legacy or alias locales that return data when passed to ICU APIs.
* Examples of supported legacy or alias locales:
*
* - iw (alias to he)
* - mo (alias to ro)
* - zh_CN (alias to zh_Hans_CN)
* - sr_BA (alias to sr_Cyrl_BA)
* - ars (alias to ar_SA)
*
* The locales in this set are disjoint from the ones in
* ULOC_AVAILABLE_DEFAULT. To get both sets at the same time, use
* ULOC_AVAILABLE_WITH_LEGACY_ALIASES.
*
* @stable ICU 65
*/
ULOC_AVAILABLE_ONLY_LEGACY_ALIASES,
/**
* The union of the locales in ULOC_AVAILABLE_DEFAULT and
* ULOC_AVAILABLE_ONLY_LEGACY_ALIAS.
*
* @stable ICU 65
*/
ULOC_AVAILABLE_WITH_LEGACY_ALIASES,
#ifndef U_HIDE_INTERNAL_API
/**
* @internal
*/
ULOC_AVAILABLE_COUNT
#endif /* U_HIDE_INTERNAL_API */
} ULocAvailableType;
/**
* Gets a list of available locales according to the type argument, allowing
* the user to access different sets of supported locales in ICU.
*
* The returned UEnumeration must be closed by the caller.
*
* @param type Type choice from ULocAvailableType.
* @param status Set if an error occurred.
* @return a UEnumeration owned by the caller, or nullptr on failure.
* @stable ICU 65
*/
U_CAPI UEnumeration* U_EXPORT2
uloc_openAvailableByType(ULocAvailableType type, UErrorCode* status);
/**
*
* Gets a list of all available 2-letter language codes defined in ISO 639,
* plus additional 3-letter codes determined to be useful for locale generation as
* defined by Unicode CLDR. This is a pointer
* to an array of pointers to arrays of char. All of these pointers are owned
* by ICU-- do not delete them, and do not write through them. The array is
* terminated with a null pointer.
* @return a list of all available language codes
* @stable ICU 2.0
*/
U_CAPI const char* const* U_EXPORT2
uloc_getISOLanguages(void);
/**
*
* Gets a list of all available 2-letter country codes defined in ISO 639. This is a
* pointer to an array of pointers to arrays of char. All of these pointers are
* owned by ICU-- do not delete them, and do not write through them. The array is
* terminated with a null pointer.
* @return a list of all available country codes
* @stable ICU 2.0
*/
U_CAPI const char* const* U_EXPORT2
uloc_getISOCountries(void);
/**
* Truncate the locale ID string to get the parent locale ID.
* Copies the part of the string before the last underscore.
* The parent locale ID will be an empty string if there is no
* underscore, or if there is only one underscore at localeID[0].
*
* @param localeID Input locale ID string.
* @param parent Output string buffer for the parent locale ID.
* @param parentCapacity Size of the output buffer.
* @param err A UErrorCode value.
* @return The length of the parent locale ID.
* @stable ICU 2.0
*/
U_CAPI int32_t U_EXPORT2
uloc_getParent(const char* localeID,
char* parent,
int32_t parentCapacity,
UErrorCode* err);
/**
* Gets the full name for the specified locale, like uloc_getName(),
* but without keywords.
*
* Note: This has the effect of 'canonicalizing' the string to
* a certain extent. Upper and lower case are set as needed,
* and if the components were in 'POSIX' format they are changed to
* ICU format. It does NOT map aliased names in any way.
* See the top of this header file.
*
* This API strips off the keyword part, so "de_DE\@collation=phonebook"
* will become "de_DE".
* This API supports preflighting.
*
* @param localeID the locale to get the full name with
* @param name fill in buffer for the name without keywords.
* @param nameCapacity capacity of the fill in buffer.
* @param err error information if retrieving the full name failed
* @return the actual buffer size needed for the full name. If it's greater
* than nameCapacity, the returned full name will be truncated.
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getBaseName(const char* localeID,
char* name,
int32_t nameCapacity,
UErrorCode* err);
/**
* Gets an enumeration of keywords for the specified locale. Enumeration
* must get disposed of by the client using uenum_close function.
*
* @param localeID the locale to get the variant code with
* @param status error information if retrieving the keywords failed
* @return enumeration of keywords or NULL if there are no keywords.
* @stable ICU 2.8
*/
U_CAPI UEnumeration* U_EXPORT2
uloc_openKeywords(const char* localeID,
UErrorCode* status);
/**
* Get the value for a keyword. Locale name does not need to be normalized.
*
* @param localeID locale name containing the keyword ("de_DE@currency=EURO;collation=PHONEBOOK")
* @param keywordName name of the keyword for which we want the value; must not be
* NULL or empty, and must consist only of [A-Za-z0-9]. Case insensitive.
* @param buffer receiving buffer
* @param bufferCapacity capacity of receiving buffer
* @param status containing error code: e.g. buffer not big enough or ill-formed localeID
* or keywordName parameters.
* @return the length of keyword value
* @stable ICU 2.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getKeywordValue(const char* localeID,
const char* keywordName,
char* buffer, int32_t bufferCapacity,
UErrorCode* status);
/**
* Sets or removes the value of the specified keyword.
*
* For removing all keywords, use uloc_getBaseName().
*
* NOTE: Unlike almost every other ICU function which takes a
* buffer, this function will NOT truncate the output text, and will
* not update the buffer with unterminated text setting a status of
* U_STRING_NOT_TERMINATED_WARNING. If a BUFFER_OVERFLOW_ERROR is received,
* it means a terminated version of the updated locale ID would not fit
* in the buffer, and the original buffer is untouched. This is done to
* prevent incorrect or possibly even malformed locales from being generated
* and used.
*
* @param keywordName name of the keyword to be set; must not be
* NULL or empty, and must consist only of [A-Za-z0-9]. Case insensitive.
* @param keywordValue value of the keyword to be set. If 0-length or
* NULL, will result in the keyword being removed; no error is given if
* that keyword does not exist. Otherwise, must consist only of
* [A-Za-z0-9] and [/_+-].
* @param buffer input buffer containing well-formed locale ID to be
* modified.
* @param bufferCapacity capacity of receiving buffer
* @param status containing error code: e.g. buffer not big enough
* or ill-formed keywordName or keywordValue parameters, or ill-formed
* locale ID in buffer on input.
* @return the length needed for the buffer
* @see uloc_getKeywordValue
* @stable ICU 3.2
*/
U_CAPI int32_t U_EXPORT2
uloc_setKeywordValue(const char* keywordName,
const char* keywordValue,
char* buffer, int32_t bufferCapacity,
UErrorCode* status);
/**
* Returns whether the locale's script is written right-to-left.
* If there is no script subtag, then the likely script is used, see uloc_addLikelySubtags().
* If no likely script is known, then false is returned.
*
* A script is right-to-left according to the CLDR script metadata
* which corresponds to whether the script's letters have Bidi_Class=R or AL.
*
* Returns true for "ar" and "en-Hebr", false for "zh" and "fa-Cyrl".
*
* @param locale input locale ID
* @return true if the locale's script is written right-to-left
* @stable ICU 54
*/
U_CAPI UBool U_EXPORT2
uloc_isRightToLeft(const char *locale);
/**
* enums for the return value for the character and line orientation
* functions.
* @stable ICU 4.0
*/
typedef enum {
ULOC_LAYOUT_LTR = 0, /* left-to-right. */
ULOC_LAYOUT_RTL = 1, /* right-to-left. */
ULOC_LAYOUT_TTB = 2, /* top-to-bottom. */
ULOC_LAYOUT_BTT = 3, /* bottom-to-top. */
ULOC_LAYOUT_UNKNOWN
} ULayoutType;
/**
* Get the layout character orientation for the specified locale.
*
* @param localeId locale name
* @param status Error status
* @return an enum indicating the layout orientation for characters.
* @stable ICU 4.0
*/
U_CAPI ULayoutType U_EXPORT2
uloc_getCharacterOrientation(const char* localeId,
UErrorCode *status);
/**
* Get the layout line orientation for the specified locale.
*
* @param localeId locale name
* @param status Error status
* @return an enum indicating the layout orientation for lines.
* @stable ICU 4.0
*/
U_CAPI ULayoutType U_EXPORT2
uloc_getLineOrientation(const char* localeId,
UErrorCode *status);
/**
* Output values which uloc_acceptLanguage() writes to the 'outResult' parameter.
*
* @see uloc_acceptLanguageFromHTTP
* @see uloc_acceptLanguage
* @stable ICU 3.2
*/
typedef enum {
/**
* No exact match was found.
* @stable ICU 3.2
*/
ULOC_ACCEPT_FAILED = 0,
/**
* An exact match was found.
* @stable ICU 3.2
*/
ULOC_ACCEPT_VALID = 1,
/**
* A fallback was found. For example, the Accept-Language list includes 'ja_JP'
* and is matched with available locale 'ja'.
* @stable ICU 3.2
*/
ULOC_ACCEPT_FALLBACK = 2 /* */
} UAcceptResult;
/**
* Based on a HTTP header from a web browser and a list of available locales,
* determine an acceptable locale for the user.
*
* This is a thin wrapper over C++ class LocaleMatcher.
*
* @param result - buffer to accept the result locale
* @param resultAvailable the size of the result buffer.
* @param outResult - An out parameter that contains the fallback status
* @param httpAcceptLanguage - "Accept-Language:" header as per HTTP.
* @param availableLocales - list of available locales to match
* @param status ICU error code. Its input value must pass the U_SUCCESS() test,
* or else the function returns immediately. Check for U_FAILURE()
* on output or use with function chaining. (See User Guide for details.)
* @return length needed for the locale.
* @stable ICU 3.2
*/
U_CAPI int32_t U_EXPORT2
uloc_acceptLanguageFromHTTP(char *result, int32_t resultAvailable,
UAcceptResult *outResult,
const char *httpAcceptLanguage,
UEnumeration* availableLocales,
UErrorCode *status);
/**
* Based on a list of available locales,
* determine an acceptable locale for the user.
*
* This is a thin wrapper over C++ class LocaleMatcher.
*
* @param result - buffer to accept the result locale
* @param resultAvailable the size of the result buffer.
* @param outResult - An out parameter that contains the fallback status
* @param acceptList - list of acceptable languages
* @param acceptListCount - count of acceptList items
* @param availableLocales - list of available locales to match
* @param status ICU error code. Its input value must pass the U_SUCCESS() test,
* or else the function returns immediately. Check for U_FAILURE()
* on output or use with function chaining. (See User Guide for details.)
* @return length needed for the locale.
* @stable ICU 3.2
*/
U_CAPI int32_t U_EXPORT2
uloc_acceptLanguage(char *result, int32_t resultAvailable,
UAcceptResult *outResult, const char **acceptList,
int32_t acceptListCount,
UEnumeration* availableLocales,
UErrorCode *status);
/**
* Gets the ICU locale ID for the specified Win32 LCID value.
*
* @param hostID the Win32 LCID to translate
* @param locale the output buffer for the ICU locale ID, which will be NUL-terminated
* if there is room.
* @param localeCapacity the size of the output buffer
* @param status an error is returned if the LCID is unrecognized or the output buffer
* is too small
* @return actual the actual size of the locale ID, not including NUL-termination
* @stable ICU 3.8
*/
U_CAPI int32_t U_EXPORT2
uloc_getLocaleForLCID(uint32_t hostID, char *locale, int32_t localeCapacity,
UErrorCode *status);
/**
* Add the likely subtags for a provided locale ID, per the algorithm described
* in the following CLDR technical report:
*
* http://www.unicode.org/reports/tr35/#Likely_Subtags
*
* If localeID is already in the maximal form, or there is no data available
* for maximization, it will be copied to the output buffer. For example,
* "und-Zzzz" cannot be maximized, since there is no reasonable maximization.
*
* Examples:
*
* "en" maximizes to "en_Latn_US"
*
* "de" maximizes to "de_Latn_US"
*
* "sr" maximizes to "sr_Cyrl_RS"
*
* "sh" maximizes to "sr_Latn_RS" (Note this will not reverse.)
*
* "zh_Hani" maximizes to "zh_Hans_CN" (Note this will not reverse.)
*
* @param localeID The locale to maximize
* @param maximizedLocaleID The maximized locale
* @param maximizedLocaleIDCapacity The capacity of the maximizedLocaleID buffer
* @param err Error information if maximizing the locale failed. If the length
* of the localeID and the null-terminator is greater than the maximum allowed size,
* or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR.
* @return The actual buffer size needed for the maximized locale. If it's
* greater than maximizedLocaleIDCapacity, the returned ID will be truncated.
* On error, the return value is -1.
* @stable ICU 4.0
*/
U_CAPI int32_t U_EXPORT2
uloc_addLikelySubtags(const char* localeID,
char* maximizedLocaleID,
int32_t maximizedLocaleIDCapacity,
UErrorCode* err);
/**
* Minimize the subtags for a provided locale ID, per the algorithm described
* in the following CLDR technical report:
*
* http://www.unicode.org/reports/tr35/#Likely_Subtags
*
* If localeID is already in the minimal form, or there is no data available
* for minimization, it will be copied to the output buffer. Since the
* minimization algorithm relies on proper maximization, see the comments
* for uloc_addLikelySubtags for reasons why there might not be any data.
*
* Examples:
*
* "en_Latn_US" minimizes to "en"
*
* "de_Latn_US" minimizes to "de"
*
* "sr_Cyrl_RS" minimizes to "sr"
*
* "zh_Hant_TW" minimizes to "zh_TW" (The region is preferred to the
* script, and minimizing to "zh" would imply "zh_Hans_CN".)
*
* @param localeID The locale to minimize
* @param minimizedLocaleID The minimized locale
* @param minimizedLocaleIDCapacity The capacity of the minimizedLocaleID buffer
* @param err Error information if minimizing the locale failed. If the length
* of the localeID and the null-terminator is greater than the maximum allowed size,
* or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR.
* @return The actual buffer size needed for the minimized locale. If it's
* greater than minimizedLocaleIDCapacity, the returned ID will be truncated.
* On error, the return value is -1.
* @stable ICU 4.0
*/
U_CAPI int32_t U_EXPORT2
uloc_minimizeSubtags(const char* localeID,
char* minimizedLocaleID,
int32_t minimizedLocaleIDCapacity,
UErrorCode* err);
/**
* Returns a locale ID for the specified BCP47 language tag string.
* If the specified language tag contains any ill-formed subtags,
* the first such subtag and all following subtags are ignored.
* <p>
* This implements the 'Language-Tag' production of BCP 47, and so
* supports legacy language tags (marked as “Type: grandfathered” in BCP 47)
* (regular and irregular) as well as private use language tags.
*
* Private use tags are represented as 'x-whatever',
* and legacy tags are converted to their canonical replacements where they exist.
*
* Note that a few legacy tags have no modern replacement;
* these will be converted using the fallback described in
* the first paragraph, so some information might be lost.
*
* @param langtag the input BCP47 language tag.
* @param localeID the output buffer receiving a locale ID for the
* specified BCP47 language tag.
* @param localeIDCapacity the size of the locale ID output buffer.
* @param parsedLength if not NULL, successfully parsed length
* for the input language tag is set.
* @param err error information if receiving the locald ID
* failed.
* @return the length of the locale ID.
* @stable ICU 4.2
*/
U_CAPI int32_t U_EXPORT2
uloc_forLanguageTag(const char* langtag,
char* localeID,
int32_t localeIDCapacity,
int32_t* parsedLength,
UErrorCode* err);
/**
* Returns a well-formed language tag for this locale ID.
* <p>
* <b>Note</b>: When <code>strict</code> is false, any locale
* fields which do not satisfy the BCP47 syntax requirement will
* be omitted from the result. When <code>strict</code> is
* true, this function sets U_ILLEGAL_ARGUMENT_ERROR to the
* <code>err</code> if any locale fields do not satisfy the
* BCP47 syntax requirement.
* @param localeID the input locale ID
* @param langtag the output buffer receiving BCP47 language
* tag for the locale ID.
* @param langtagCapacity the size of the BCP47 language tag
* output buffer.
* @param strict boolean value indicating if the function returns
* an error for an ill-formed input locale ID.
* @param err error information if receiving the language
* tag failed.
* @return The length of the BCP47 language tag.
* @stable ICU 4.2
*/
U_CAPI int32_t U_EXPORT2
uloc_toLanguageTag(const char* localeID,
char* langtag,
int32_t langtagCapacity,
UBool strict,
UErrorCode* err);
/**
* Converts the specified keyword (legacy key, or BCP 47 Unicode locale
* extension key) to the equivalent BCP 47 Unicode locale extension key.
* For example, BCP 47 Unicode locale extension key "co" is returned for
* the input keyword "collation".
* <p>
* When the specified keyword is unknown, but satisfies the BCP syntax,
* then the pointer to the input keyword itself will be returned.
* For example,
* <code>uloc_toUnicodeLocaleKey("ZZ")</code> returns "ZZ".
*
* @param keyword the input locale keyword (either legacy key
* such as "collation" or BCP 47 Unicode locale extension
* key such as "co").
* @return the well-formed BCP 47 Unicode locale extension key,
* or NULL if the specified locale keyword cannot be
* mapped to a well-formed BCP 47 Unicode locale extension
* key.
* @see uloc_toLegacyKey
* @stable ICU 54
*/
U_CAPI const char* U_EXPORT2
uloc_toUnicodeLocaleKey(const char* keyword);
/**
* Converts the specified keyword value (legacy type, or BCP 47
* Unicode locale extension type) to the well-formed BCP 47 Unicode locale
* extension type for the specified keyword (category). For example, BCP 47
* Unicode locale extension type "phonebk" is returned for the input
* keyword value "phonebook", with the keyword "collation" (or "co").
* <p>
* When the specified keyword is not recognized, but the specified value
* satisfies the syntax of the BCP 47 Unicode locale extension type,
* or when the specified keyword allows 'variable' type and the specified
* value satisfies the syntax, then the pointer to the input type value itself
* will be returned.
* For example,
* <code>uloc_toUnicodeLocaleType("Foo", "Bar")</code> returns "Bar",
* <code>uloc_toUnicodeLocaleType("variableTop", "00A4")</code> returns "00A4".
*
* @param keyword the locale keyword (either legacy key such as
* "collation" or BCP 47 Unicode locale extension
* key such as "co").
* @param value the locale keyword value (either legacy type
* such as "phonebook" or BCP 47 Unicode locale extension
* type such as "phonebk").
* @return the well-formed BCP47 Unicode locale extension type,
* or NULL if the locale keyword value cannot be mapped to
* a well-formed BCP 47 Unicode locale extension type.
* @see uloc_toLegacyType
* @stable ICU 54
*/
U_CAPI const char* U_EXPORT2
uloc_toUnicodeLocaleType(const char* keyword, const char* value);
/**
* Converts the specified keyword (BCP 47 Unicode locale extension key, or
* legacy key) to the legacy key. For example, legacy key "collation" is
* returned for the input BCP 47 Unicode locale extension key "co".
*
* @param keyword the input locale keyword (either BCP 47 Unicode locale
* extension key or legacy key).
* @return the well-formed legacy key, or NULL if the specified
* keyword cannot be mapped to a well-formed legacy key.
* @see toUnicodeLocaleKey
* @stable ICU 54
*/
U_CAPI const char* U_EXPORT2
uloc_toLegacyKey(const char* keyword);
/**
* Converts the specified keyword value (BCP 47 Unicode locale extension type,
* or legacy type or type alias) to the canonical legacy type. For example,
* the legacy type "phonebook" is returned for the input BCP 47 Unicode
* locale extension type "phonebk" with the keyword "collation" (or "co").
* <p>
* When the specified keyword is not recognized, but the specified value
* satisfies the syntax of legacy key, or when the specified keyword
* allows 'variable' type and the specified value satisfies the syntax,
* then the pointer to the input type value itself will be returned.
* For example,
* <code>uloc_toLegacyType("Foo", "Bar")</code> returns "Bar",
* <code>uloc_toLegacyType("vt", "00A4")</code> returns "00A4".
*
* @param keyword the locale keyword (either legacy keyword such as
* "collation" or BCP 47 Unicode locale extension
* key such as "co").
* @param value the locale keyword value (either BCP 47 Unicode locale
* extension type such as "phonebk" or legacy keyword value
* such as "phonebook").
* @return the well-formed legacy type, or NULL if the specified
* keyword value cannot be mapped to a well-formed legacy
* type.
* @see toUnicodeLocaleType
* @stable ICU 54
*/
U_CAPI const char* U_EXPORT2
uloc_toLegacyType(const char* keyword, const char* value);
#endif /*_ULOC*/