ULocaleBuilder is used to build valid locale id
* string or IETF BCP 47 language tag from values configured by the setters.
* The ULocaleBuilder checks if a value configured by a
* setter satisfies the syntax requirements defined by the Locale
* class. A string of Locale created by a ULocaleBuilder is
* well-formed and can be transformed to a well-formed IETF BCP 47 language tag
* without losing information.
*
* The following example shows how to create a locale string
* with the ULocaleBuilder.
*
** ** UErrorCode err = U_ZERO_ERROR; * char buffer[ULOC_FULLNAME_CAPACITY]; * ULocaleBuilder* builder = ulocbld_open(); * ulocbld_setLanguage(builder, "sr", -1); * ulocbld_setScript(builder, "Latn", -1); * ulocbld_setRegion(builder, "RS", -1); * int32_t length = ulocbld_buildLocaleID( * builder, buffer, ULOC_FULLNAME_CAPACITY, &error); * ulocbld_close(builder); **
ULocaleBuilders can be reused; ulocbld_clear() resets all
* fields to their default values.
*
*
ULocaleBuilder tracks errors in an internal UErrorCode. For all setters,
* except ulocbld_setLanguageTag and ulocbld_setLocale, ULocaleBuilder will return immediately
* if the internal UErrorCode is in error state.
* To reset internal state and error code, call clear method.
* The ulocbld_setLanguageTag and setLocale method will first clear the internal
* UErrorCode, then track the error of the validation of the input parameter
* into the internal UErrorCode.
*
* @draft ICU 74
*/
/**
* Constructs an empty ULocaleBuilder. The default value of all
* fields, extensions, and private use information is the
* empty string. The created builder should be destroyed by calling
* ulocbld_close();
*
* @draft ICU 74
*/
U_CAPI ULocaleBuilder* U_EXPORT2
ulocbld_open();
/**
* Close the builder and destroy it's internal states.
* @param builder the builder
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_close(ULocaleBuilder* builder);
/**
* Resets the ULocaleBuilder to match the provided
* locale. Existing state is discarded.
*
*
All fields of the locale must be well-formed. *
This method clears the internal UErrorCode.
*
* @param builder the builder
* @param locale the locale, a const char * pointer (need not be terminated when
* the length is non-negative)
* @param length the length of the locale; if negative, then the locale need to be
* null terminated,
*
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_setLocale(ULocaleBuilder* builder, const char* locale, int32_t length);
/**
* Resets the ULocaleBuilder to match the provided
* ULocale. Existing state is discarded.
*
*
The locale must be not bogus. *
This method clears the internal UErrorCode.
*
* @param builder the builder.
* @param locale the locale, a ULocale* pointer. The builder adopts the locale
* after the call and the client must not delete it.
*
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_adoptULocale(ULocaleBuilder* builder, ULocale* locale);
/**
* Resets the ULocaleBuilder to match the provided IETF BCP 47 language tag.
* Discards the existing state.
* The empty string causes the builder to be reset, like {@link #ulocbld_clear}.
* Legacy language tags (marked as “Type: grandfathered” in BCP 47)
* are converted to their canonical form before being processed.
* Otherwise, the language tag must be well-formed,
* or else the ulocbld_buildLocaleID() and ulocbld_buildLanguageTag() methods
* will later report an U_ILLEGAL_ARGUMENT_ERROR.
*
*
This method clears the internal UErrorCode.
*
* @param builder the builder
* @param tag the language tag, defined as IETF BCP 47 language tag, a
* const char * pointer (need not be terminated when
* the length is non-negative)
* @param length the length of the tag; if negative, then the tag need to be
* null terminated,
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_setLanguageTag(ULocaleBuilder* builder, const char* tag, int32_t length);
/**
* Sets the language. If language is the empty string, the
* language in this ULocaleBuilder is removed. Otherwise, the
* language must be well-formed, or else the ulocbld_buildLocaleID()
* and ulocbld_buildLanguageTag() methods will
* later report an U_ILLEGAL_ARGUMENT_ERROR.
*
*
The syntax of language value is defined as
* [unicode_language_subtag](http://www.unicode.org/reports/tr35/tr35.html#unicode_language_subtag).
*
* @param builder the builder
* @param language the language, a const char * pointer (need not be terminated when
* the length is non-negative)
* @param length the length of the language; if negative, then the language need to be
* null terminated,
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_setLanguage(ULocaleBuilder* builder, const char* language, int32_t length);
/**
* Sets the script. If script is the empty string, the script in
* this ULocaleBuilder is removed.
* Otherwise, the script must be well-formed, or else the
* ulocbld_buildLocaleID() and ulocbld_buildLanguageTag() methods will later
* report an U_ILLEGAL_ARGUMENT_ERROR.
*
*
The script value is a four-letter script code as
* [unicode_script_subtag](http://www.unicode.org/reports/tr35/tr35.html#unicode_script_subtag)
* defined by ISO 15924
*
* @param builder the builder
* @param script the script, a const char * pointer (need not be terminated when
* the length is non-negative)
* @param length the length of the script; if negative, then the script need to be
* null terminated,
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_setScript(ULocaleBuilder* builder, const char* script, int32_t length);
/**
* Sets the region. If region is the empty string, the region in this
* ULocaleBuilder is removed. Otherwise, the region
* must be well-formed, or else the ulocbld_buildLocaleID() and
* ulocbld_buildLanguageTag() methods will later report an
* U_ILLEGAL_ARGUMENT_ERROR.
*
*
The region value is defined by * [unicode_region_subtag](http://www.unicode.org/reports/tr35/tr35.html#unicode_region_subtag) * as a two-letter ISO 3166 code or a three-digit UN M.49 area code. * *
The region value in the Locale created by the
* ULocaleBuilder is always normalized to upper case.
*
* @param builder the builder
* @param region the region, a const char * pointer (need not be terminated when
* the length is non-negative)
* @param length the length of the region; if negative, then the region need to be
* null terminated,
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_setRegion(ULocaleBuilder* builder, const char* region, int32_t length);
/**
* Sets the variant. If variant is the empty string, the variant in this
* ULocaleBuilder is removed. Otherwise, the variant
* must be well-formed, or else the ulocbld_buildLocaleID() and
* ulocbld_buildLanguageTag() methods will later report an
* U_ILLEGAL_ARGUMENT_ERROR.
*
*
Note: This method checks if variant
* satisfies the
* [unicode_variant_subtag](http://www.unicode.org/reports/tr35/tr35.html#unicode_variant_subtag)
* syntax requirements, and normalizes the value to lowercase letters. However,
* the Locale class does not impose any syntactic
* restriction on variant. To set an ill-formed variant, use a Locale constructor.
* If there are multiple unicode_variant_subtag, the caller must concatenate
* them with '-' as separator (ex: "foobar-fibar").
*
* @param builder the builder
* @param variant the variant, a const char * pointer (need not be terminated when
* the length is non-negative)
* @param length the length of the variant; if negative, then the variant need to be
* null terminated,
* @draft ICU 74
*/
U_CAPI void U_EXPORT2
ulocbld_setVariant(ULocaleBuilder* builder, const char* variant, int32_t length);
/**
* Sets the extension for the given key. If the value is the empty string,
* the extension is removed. Otherwise, the key and
* value must be well-formed, or else the ulocbld_buildLocaleID()
* and ulocbld_buildLanguageTag() methods will
* later report an U_ILLEGAL_ARGUMENT_ERROR.
*
*
Note: The key ('u') is used for the Unicode locale extension. * Setting a value for this key replaces any existing Unicode locale key/type * pairs with those defined in the extension. * *
Note: The key ('x') is used for the private use code. To be * well-formed, the value for this key needs only to have subtags of one to * eight alphanumeric characters, not two to eight as in the general case. * * @param builder the builder * @param key the extension key * @param value the value, a const char * pointer (need not be terminated when * the length is non-negative) * @param length the length of the value; if negative, then the value need to be * null terminated, * @draft ICU 74 */ U_CAPI void U_EXPORT2 ulocbld_setExtension(ULocaleBuilder* builder, char key, const char* value, int32_t length); /** * Sets the Unicode locale keyword type for the given key. If the type * StringPiece is constructed with a nullptr, the keyword is removed. * If the type is the empty string, the keyword is set without type subtags. * Otherwise, the key and type must be well-formed, or else the * ulocbld_buildLocaleID() and ulocbld_buildLanguageTag() methods will later * report an U_ILLEGAL_ARGUMENT_ERROR. * *
Keys and types are converted to lower case. * *
Note:Setting the 'u' extension via {@link #ulocbld_setExtension} * replaces all Unicode locale keywords with those defined in the * extension. * * @param builder the builder * @param key the Unicode locale key, a const char * pointer (need not be * terminated when the length is non-negative) * @param keyLength the length of the key; if negative, then the key need to be * null terminated, * @param type the Unicode locale type, a const char * pointer (need not be * terminated when the length is non-negative) * @param typeLength the length of the type; if negative, then the type need to * be null terminated, * @return This builder. * @draft ICU 74 */ U_CAPI void U_EXPORT2 ulocbld_setUnicodeLocaleKeyword(ULocaleBuilder* builder, const char* key, int32_t keyLength, const char* type, int32_t typeLength); /** * Adds a unicode locale attribute, if not already present, otherwise * has no effect. The attribute must not be empty string and must be * well-formed or U_ILLEGAL_ARGUMENT_ERROR will be set to status * during the ulocbld_buildLocaleID() and ulocbld_buildLanguageTag() calls. * * @param builder the builder * @param attribute the attribute, a const char * pointer (need not be * terminated when the length is non-negative) * @param length the length of the attribute; if negative, then the attribute * need to be null terminated, * @draft ICU 74 */ U_CAPI void U_EXPORT2 ulocbld_addUnicodeLocaleAttribute( ULocaleBuilder* builder, const char* attribute, int32_t length); /** * Removes a unicode locale attribute, if present, otherwise has no * effect. The attribute must not be empty string and must be well-formed * or U_ILLEGAL_ARGUMENT_ERROR will be set to status during the ulocbld_buildLocaleID() * and ulocbld_buildLanguageTag() calls. * *
Attribute comparison for removal is case-insensitive. * * @param builder the builder * @param attribute the attribute, a const char * pointer (need not be * terminated when the length is non-negative) * @param length the length of the attribute; if negative, then the attribute * need to be null terminated, * @draft ICU 74 */ U_CAPI void U_EXPORT2 ulocbld_removeUnicodeLocaleAttribute( ULocaleBuilder* builder, const char* attribute, int32_t length); /** * Resets the builder to its initial, empty state. *
This method clears the internal UErrorCode. * * @param builder the builder * @draft ICU 74 */ U_CAPI void U_EXPORT2 ulocbld_clear(ULocaleBuilder* builder); /** * Resets the extensions to their initial, empty state. * Language, script, region and variant are unchanged. * * @param builder the builder * @draft ICU 74 */ U_CAPI void U_EXPORT2 ulocbld_clearExtensions(ULocaleBuilder* builder); /** * Build the LocaleID string from the fields set on this builder. * If any set methods or during the ulocbld_buildLocaleID() call require memory * allocation but fail U_MEMORY_ALLOCATION_ERROR will be set to status. * If any of the fields set by the setters are not well-formed, the status * will be set to U_ILLEGAL_ARGUMENT_ERROR. The state of the builder will * not change after the ulocbld_buildLocaleID() call and the caller is * free to keep using the same builder to build more locales. * * @param builder the builder * @param locale the locale id * @param localeCapacity the size of the locale buffer to store the locale id * @param err the error code * @return the length of the locale id in buffer * @draft ICU 74 */ U_CAPI int32_t U_EXPORT2 ulocbld_buildLocaleID(ULocaleBuilder* builder, char* locale, int32_t localeCapacity, UErrorCode* err); /** * Build the ULocale object from the fields set on this builder. * If any set methods or during the ulocbld_buildULocale() call require memory * allocation but fail U_MEMORY_ALLOCATION_ERROR will be set to status. * If any of the fields set by the setters are not well-formed, the status * will be set to U_ILLEGAL_ARGUMENT_ERROR. The state of the builder will * not change after the ulocbld_buildULocale() call and the caller is * free to keep using the same builder to build more locales. * * @param builder the builder. * @param err the error code. * @return the locale, a ULocale* pointer. The created ULocale must be * destroyed by calling {@link ulocale_close}. * @draft ICU 74 */ U_CAPI ULocale* U_EXPORT2 ulocbld_buildULocale(ULocaleBuilder* builder, UErrorCode* err); /** * Build the IETF BCP 47 language tag string from the fields set on this builder. * If any set methods or during the ulocbld_buildLanguageTag() call require memory * allocation but fail U_MEMORY_ALLOCATION_ERROR will be set to status. * If any of the fields set by the setters are not well-formed, the status * will be set to U_ILLEGAL_ARGUMENT_ERROR. The state of the builder will * not change after the ulocbld_buildLanguageTag() call and the caller is free * to keep using the same builder to build more locales. * * @param builder the builder * @param language the language tag * @param languageCapacity the size of the language buffer to store the language * tag * @param err the error code * @return the length of the language tag in buffer * @draft ICU 74 */ U_CAPI int32_t U_EXPORT2 ulocbld_buildLanguageTag(ULocaleBuilder* builder, char* language, int32_t languageCapacity, UErrorCode* err); /** * Sets the UErrorCode if an error occurred while recording sets. * Preserves older error codes in the outErrorCode. * * @param builder the builder * @param outErrorCode Set to an error code that occurred while setting subtags. * Unchanged if there is no such error or if outErrorCode * already contained an error. * @return true if U_FAILURE(*outErrorCode) * @draft ICU 74 */ U_CAPI UBool U_EXPORT2 ulocbld_copyErrorTo(const ULocaleBuilder* builder, UErrorCode *outErrorCode); #if U_SHOW_CPLUSPLUS_API U_NAMESPACE_BEGIN /** * \class LocalULocaleBuilderPointer * "Smart pointer" class, closes a ULocaleBuilder via ulocbld_close(). * For most methods see the LocalPointerBase base class. * * @see LocalPointerBase * @see LocalPointer * @draft ICU 74 */ U_DEFINE_LOCAL_OPEN_POINTER(LocalULocaleBuilderPointer, ULocaleBuilder, ulocbld_close); U_NAMESPACE_END #endif /* U_SHOW_CPLUSPLUS_API */ #endif /* U_HIDE_DRAFT_API */ #endif // __ULOCBUILDER_H__