FM / unicode

/usr/include/unicode

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basictz.h	8913	0644	edit dl rm
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ubidi.h	83092	0644	edit dl rm
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ucnv_cb.h	6635	0644	edit dl rm
ucnv_err.h	21375	0644	edit dl rm
ucol.h	48826	0644	edit dl rm
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uconfig.h	6035	0644	edit dl rm
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uenum.h	5796	0644	edit dl rm
uidna.h	15918	0644	edit dl rm
uintrnal.h	15752	0644	edit dl rm
uiter.h	23234	0644	edit dl rm
uloc.h	44548	0644	edit dl rm
ulocdata.h	9739	0644	edit dl rm
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uobject.h	11393	0644	edit dl rm
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uversion.h	10902	0644	edit dl rm
vtzone.h	20048	0644	edit dl rm

Edit: /usr/include/unicode/uloc.h (44548B)

/*
**********************************************************************
*   Copyright (C) 1997-2009, 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 
 *
 * <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 locale-sensitive 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.
 *
 * 
 * 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 ISO
 * Language Code. 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:
 * <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>
 *
 * 
 * The second option includes an additonal ISO Country
 * Code. 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:
 * <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>
 *
 * 
 * The third option requires another additonal information--the 
 * Variant.
 * 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".
 *
 * 
 * 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.
 * Note: 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>.
 *
 * 
 * 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
 *
 * 
 * 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.
 *
 * 
 * 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. 
 * 
 * \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
 * just a mechanism for identifying these services.
 *
 * 
 * Each international serivce 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
 * 
 * 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 50

/**
 * 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

/**
 * Character separating keywords from the locale string
 * different for EBCDIC - TODO
 * @stable ICU 2.8
 */
#define ULOC_KEYWORD_SEPARATOR '@'
/**
 * Character for assigning value to a keyword
 * @stable ICU 2.8
 */
#define ULOC_KEYWORD_ASSIGN '='
/**
 * Character separating keywords
 * @stable ICU 2.8
 */
#define ULOC_KEYWORD_ITEM_SEPARATOR ';'

/**
 * 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,
#endif /* U_HIDE_DEPRECATED_API */

ULOC_DATA_LOCALE_TYPE_LIMIT = 3
} ULocDataLocaleType ;

/**
 * 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_STABLE 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.
 * 
 * Changes to ICU's default locale do not propagate back to the
 * system environment.
 * 
 * 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_STABLE void U_EXPORT2
uloc_setDefault(const char* localeID,
 UErrorCode* status);

/**
 * 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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.
 *
 * @param localeID the locale to get the Win32 LCID value with
 * @return country the Win32 LCID for localeID
 * @stable ICU 2.0
 */
U_STABLE 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
 * @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_STABLE 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 country code for 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
 * @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_STABLE 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.
 *
 * @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
 * @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_STABLE 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
 * @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_STABLE 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.
 * @return the actual buffer size needed for the displayable variant code. 
 * @see #uloc_openKeywords
 * @stable ICU 2.8
 */
U_STABLE 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.
 * @return the actual buffer size needed for the displayable variant code. 
 * @stable ICU 2.8
 */
U_STABLE 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_STABLE 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 all available locales.  
 * 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
 * @return a specified locale name of all available locales
 * @stable ICU 2.0
 */
U_STABLE 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_STABLE int32_t U_EXPORT2 uloc_countAvailable(void);

/**
 *
 * Gets a list of all available language 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 language codes
 * @stable ICU 2.0
 */
U_STABLE 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_STABLE 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_STABLE int32_t U_EXPORT2
uloc_getParent(const char*    localeID,
                 char* parent,
                 int32_t parentCapacity,
                 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.
 * 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_STABLE 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_STABLE 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. Case insensitive.
 * @param buffer receiving buffer
 * @param bufferCapacity capacity of receiving buffer
 * @param status containing error code - buffer not big enough.
 * @return the length of keyword value
 * @stable ICU 2.8
 */
U_STABLE int32_t U_EXPORT2
uloc_getKeywordValue(const char* localeID,
                     const char* keywordName,
                     char* buffer, int32_t bufferCapacity,
                     UErrorCode* status);

/**
 * Set the value of the specified keyword.
 * NOTE: Unlike almost every other ICU function which takes a
 * buffer, this function will NOT truncate the output text. If a
 * BUFFER_OVERFLOW_ERROR is received, it means that 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. 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.
 * @param buffer input buffer containing locale to be modified.
 * @param bufferCapacity capacity of receiving buffer
 * @param status containing error code - buffer not big enough.
 * @return the length needed for the buffer
 * @see uloc_getKeywordValue
 * @stable ICU 3.2
 */
U_STABLE int32_t U_EXPORT2
uloc_setKeywordValue(const char* keywordName,
                     const char* keywordValue,
                     char* buffer, int32_t bufferCapacity,
                     UErrorCode* status);

/**
 * 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_DRAFT 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_DRAFT ULayoutType U_EXPORT2
uloc_getLineOrientation(const char* localeId,
                        UErrorCode *status);

/**
 * enums for the 'outResult' parameter return value
 * @see uloc_acceptLanguageFromHTTP
 * @see uloc_acceptLanguage
 * @stable ICU 3.2
 */
typedef enum {
  ULOC_ACCEPT_FAILED   = 0,  /* No exact match was found. */
  ULOC_ACCEPT_VALID    = 1,  /* An exact match was found. */
  ULOC_ACCEPT_FALLBACK = 2   /* A fallback was found, for example, 
                                Accept list contained 'ja_JP'
                                which matched available locale 'ja'. */
} UAcceptResult;

/**
 * Based on a HTTP header from a web browser and a list of available locales,
 * determine an acceptable locale for the user.
 * @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 Error status, may be BUFFER_OVERFLOW_ERROR
 * @return length needed for the locale.
 * @stable ICU 3.2
 */
U_STABLE 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.
 * @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 Error status, may be BUFFER_OVERFLOW_ERROR
 * @return length needed for the locale.
 * @stable ICU 3.2
 */
U_STABLE 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_DRAFT 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_DRAFT 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_DRAFT 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.
 * 
 * This implements the 'Language-Tag' production of BCP47, and so
 * supports grandfathered (regular and irregular) as well as private
 * use language tags. Private use tags are represented as 'x-whatever',
 * and grandfathered tags are converted to their canonical replacements
 * where they exist. Note that a few grandfathered 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, succsessfully 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.
 * @draft ICU 4.2
 */
U_DRAFT 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. 
 * 
 * Note: 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 lcoale 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.
 * @draft ICU 4.2
 */
U_DRAFT int32_t U_EXPORT2
uloc_toLanguageTag(const char* localeID,
 char* langtag,
 int32_t langtagCapacity,
 UBool strict,
 UErrorCode* err);

#endif /*_ULOC*/

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