-
-/**
- * This function looks for the localeID in the likelySubtags resource.
- *
- * @param localeID The tag to find.
- * @param buffer A buffer to hold the matching entry
- * @param bufferLength The length of the output buffer
- * @return A pointer to "buffer" if found, or a null pointer if not.
- */
-static const char* U_CALLCONV
-findLikelySubtags(const char* localeID,
- char* buffer,
- int32_t bufferLength,
- UErrorCode* err) {
- const char* result = NULL;
-
- if (!U_FAILURE(*err)) {
- int32_t resLen = 0;
- const UChar* s = NULL;
- UResourceBundle* subtags = ures_openDirect(NULL, "likelySubtags", err);
- if (!U_FAILURE(*err)) {
- s = ures_getStringByKey(subtags, localeID, &resLen, err);
-
- if (U_FAILURE(*err)) {
- /*
- * If a resource is missing, it's not really an error, it's
- * just that we don't have any data for that particular locale ID.
- */
- if (*err == U_MISSING_RESOURCE_ERROR) {
- *err = U_ZERO_ERROR;
- }
- }
- else if (resLen >= bufferLength) {
- /* The buffer should never overflow. */
- *err = U_INTERNAL_PROGRAM_ERROR;
- }
- else {
- u_UCharsToChars(s, buffer, resLen + 1);
- result = buffer;
- }
-
- ures_close(subtags);
- }
- }
-
- return result;
-}
-
-/**
- * Append a tag to a buffer, adding the separator if necessary. The buffer
- * must be large enough to contain the resulting tag plus any separator
- * necessary. The tag must not be a zero-length string.
- *
- * @param tag The tag to add.
- * @param tagLength The length of the tag.
- * @param buffer The output buffer.
- * @param bufferLength The length of the output buffer. This is an input/ouput parameter.
- **/
-static void U_CALLCONV
-appendTag(
- const char* tag,
- int32_t tagLength,
- char* buffer,
- int32_t* bufferLength) {
-
- if (*bufferLength > 0) {
- buffer[*bufferLength] = '_';
- ++(*bufferLength);
- }
-
- uprv_memmove(
- &buffer[*bufferLength],
- tag,
- tagLength);
-
- *bufferLength += tagLength;
-}
-
-/**
- * These are the canonical strings for unknown languages, scripts and regions.
- **/
-static const char* const unknownLanguage = "und";
-static const char* const unknownScript = "Zzzz";
-static const char* const unknownRegion = "ZZ";
-
-/**
- * Create a tag string from the supplied parameters. The lang, script and region
- * parameters may be NULL pointers. If they are, their corresponding length parameters
- * must be less than or equal to 0.
- *
- * If any of the language, script or region parameters are empty, and the alternateTags
- * parameter is not NULL, it will be parsed for potential language, script and region tags
- * to be used when constructing the new tag. If the alternateTags parameter is NULL, or
- * it contains no language tag, the default tag for the unknown language is used.
- *
- * If the length of the new string exceeds the capacity of the output buffer,
- * the function copies as many bytes to the output buffer as it can, and returns
- * the error U_BUFFER_OVERFLOW_ERROR.
- *
- * If an illegal argument is provided, the function returns the error
- * U_ILLEGAL_ARGUMENT_ERROR.
- *
- * Note that this function can return the warning U_STRING_NOT_TERMINATED_WARNING if
- * the tag string fits in the output buffer, but the null terminator doesn't.
- *
- * @param lang The language tag to use.
- * @param langLength The length of the language tag.
- * @param script The script tag to use.
- * @param scriptLength The length of the script tag.
- * @param region The region tag to use.
- * @param regionLength The length of the region tag.
- * @param trailing Any trailing data to append to the new tag.
- * @param trailingLength The length of the trailing data.
- * @param alternateTags A string containing any alternate tags.
- * @param tag The output buffer.
- * @param tagCapacity The capacity of the output buffer.
- * @param err A pointer to a UErrorCode for error reporting.
- * @return The length of the tag string, which may be greater than tagCapacity, or -1 on error.
- **/
-static int32_t U_CALLCONV
-createTagStringWithAlternates(
- const char* lang,
- int32_t langLength,
- const char* script,
- int32_t scriptLength,
- const char* region,
- int32_t regionLength,
- const char* trailing,
- int32_t trailingLength,
- const char* alternateTags,
- char* tag,
- int32_t tagCapacity,
- UErrorCode* err) {
-
- if (U_FAILURE(*err)) {
- goto error;
- }
- else if (tag == NULL ||
- tagCapacity <= 0 ||
- langLength >= ULOC_LANG_CAPACITY ||
- scriptLength >= ULOC_SCRIPT_CAPACITY ||
- regionLength >= ULOC_COUNTRY_CAPACITY) {
- goto error;
- }
- else {
- /**
- * ULOC_FULLNAME_CAPACITY will provide enough capacity
- * that we can build a string that contains the language,
- * script and region code without worrying about overrunning
- * the user-supplied buffer.
- **/
- char tagBuffer[ULOC_FULLNAME_CAPACITY];
- int32_t tagLength = 0;
- int32_t capacityRemaining = tagCapacity;
- UBool regionAppended = FALSE;
-
- if (langLength > 0) {
- appendTag(
- lang,
- langLength,
- tagBuffer,
- &tagLength);
- }
- else if (alternateTags == NULL) {
- /*
- * Append the value for an unknown language, if
- * we found no language.
- */
- appendTag(
- unknownLanguage,
- uprv_strlen(unknownLanguage),
- tagBuffer,
- &tagLength);
- }
- else {
- /*
- * Parse the alternateTags string for the language.
- */
- char alternateLang[ULOC_LANG_CAPACITY];
- int32_t alternateLangLength = sizeof(alternateLang);
-
- alternateLangLength =
- uloc_getLanguage(
- alternateTags,
- alternateLang,
- alternateLangLength,
- err);
- if(U_FAILURE(*err) ||
- alternateLangLength >= ULOC_LANG_CAPACITY) {
- goto error;
- }
- else if (alternateLangLength == 0) {
- /*
- * Append the value for an unknown language, if
- * we found no language.
- */
- appendTag(
- unknownLanguage,
- uprv_strlen(unknownLanguage),
- tagBuffer,
- &tagLength);
- }
- else {
- appendTag(
- alternateLang,
- alternateLangLength,
- tagBuffer,
- &tagLength);
- }
- }
-
- if (scriptLength > 0) {
- appendTag(
- script,
- scriptLength,
- tagBuffer,
- &tagLength);
- }
- else if (alternateTags != NULL) {
- /*
- * Parse the alternateTags string for the script.
- */
- char alternateScript[ULOC_SCRIPT_CAPACITY];
-
- const int32_t alternateScriptLength =
- uloc_getScript(
- alternateTags,
- alternateScript,
- sizeof(alternateScript),
- err);
-
- if (U_FAILURE(*err) ||
- alternateScriptLength >= ULOC_SCRIPT_CAPACITY) {
- goto error;
- }
- else if (alternateScriptLength > 0) {
- appendTag(
- alternateScript,
- alternateScriptLength,
- tagBuffer,
- &tagLength);
- }
- }
-
- if (regionLength > 0) {
- appendTag(
- region,
- regionLength,
- tagBuffer,
- &tagLength);
-
- regionAppended = TRUE;
- }
- else if (alternateTags != NULL) {
- /*
- * Parse the alternateTags string for the region.
- */
- char alternateRegion[ULOC_COUNTRY_CAPACITY];
-
- const int32_t alternateRegionLength =
- uloc_getCountry(
- alternateTags,
- alternateRegion,
- sizeof(alternateRegion),
- err);
- if (U_FAILURE(*err) ||
- alternateRegionLength >= ULOC_COUNTRY_CAPACITY) {
- goto error;
- }
- else if (alternateRegionLength > 0) {
- appendTag(
- alternateRegion,
- alternateRegionLength,
- tagBuffer,
- &tagLength);
-
- regionAppended = TRUE;
- }
- }
-
- {
- const int32_t toCopy =
- tagLength >= tagCapacity ? tagCapacity : tagLength;
-
- /**
- * Copy the partial tag from our internal buffer to the supplied
- * target.
- **/
- uprv_memcpy(
- tag,
- tagBuffer,
- toCopy);
-
- capacityRemaining -= toCopy;
- }
-
- if (trailingLength > 0) {
- if (capacityRemaining > 0 && !regionAppended) {
- tag[tagLength++] = '_';
- --capacityRemaining;
- }
-
- if (capacityRemaining > 0) {
- /*
- * Copy the trailing data into the supplied buffer. Use uprv_memmove, since we
- * don't know if the user-supplied buffers overlap.
- */
- const int32_t toCopy =
- trailingLength >= capacityRemaining ? capacityRemaining : trailingLength;
-
- uprv_memmove(
- &tag[tagLength],
- trailing,
- toCopy);
- }
- }
-
- tagLength += trailingLength;
-
- return u_terminateChars(
- tag,
- tagCapacity,
- tagLength,
- err);
- }
-
-error:
-
- /**
- * An overflow indicates the locale ID passed in
- * is ill-formed. If we got here, and there was
- * no previous error, it's an implicit overflow.
- **/
- if (*err == U_BUFFER_OVERFLOW_ERROR ||
- U_SUCCESS(*err)) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- return -1;
-}
-
-/**
- * Create a tag string from the supplied parameters. The lang, script and region
- * parameters may be NULL pointers. If they are, their corresponding length parameters
- * must be less than or equal to 0. If the lang parameter is an empty string, the
- * default value for an unknown language is written to the output buffer.
- *
- * If the length of the new string exceeds the capacity of the output buffer,
- * the function copies as many bytes to the output buffer as it can, and returns
- * the error U_BUFFER_OVERFLOW_ERROR.
- *
- * If an illegal argument is provided, the function returns the error
- * U_ILLEGAL_ARGUMENT_ERROR.
- *
- * @param lang The language tag to use.
- * @param langLength The length of the language tag.
- * @param script The script tag to use.
- * @param scriptLength The length of the script tag.
- * @param region The region tag to use.
- * @param regionLength The length of the region tag.
- * @param trailing Any trailing data to append to the new tag.
- * @param trailingLength The length of the trailing data.
- * @param tag The output buffer.
- * @param tagCapacity The capacity of the output buffer.
- * @param err A pointer to a UErrorCode for error reporting.
- * @return The length of the tag string, which may be greater than tagCapacity.
- **/
-static int32_t U_CALLCONV
-createTagString(
- const char* lang,
- int32_t langLength,
- const char* script,
- int32_t scriptLength,
- const char* region,
- int32_t regionLength,
- const char* trailing,
- int32_t trailingLength,
- char* tag,
- int32_t tagCapacity,
- UErrorCode* err)
-{
- return createTagStringWithAlternates(
- lang,
- langLength,
- script,
- scriptLength,
- region,
- regionLength,
- trailing,
- trailingLength,
- NULL,
- tag,
- tagCapacity,
- err);
-}
-
-/**
- * Parse the language, script, and region subtags from a tag string, and copy the
- * results into the corresponding output parameters. The buffers are null-terminated,
- * unless overflow occurs.
- *
- * The langLength, scriptLength, and regionLength parameters are input/output
- * parameters, and must contain the capacity of their corresponding buffers on
- * input. On output, they will contain the actual length of the buffers, not
- * including the null terminator.
- *
- * If the length of any of the output subtags exceeds the capacity of the corresponding
- * buffer, the function copies as many bytes to the output buffer as it can, and returns
- * the error U_BUFFER_OVERFLOW_ERROR. It will not parse any more subtags once overflow
- * occurs.
- *
- * If an illegal argument is provided, the function returns the error
- * U_ILLEGAL_ARGUMENT_ERROR.
- *
- * @param localeID The locale ID to parse.
- * @param lang The language tag buffer.
- * @param langLength The length of the language tag.
- * @param script The script tag buffer.
- * @param scriptLength The length of the script tag.
- * @param region The region tag buffer.
- * @param regionLength The length of the region tag.
- * @param err A pointer to a UErrorCode for error reporting.
- * @return The number of chars of the localeID parameter consumed.
- **/
-static int32_t U_CALLCONV
-parseTagString(
- const char* localeID,
- char* lang,
- int32_t* langLength,
- char* script,
- int32_t* scriptLength,
- char* region,
- int32_t* regionLength,
- UErrorCode* err)
-{
- const char* position = localeID;
- int32_t subtagLength = 0;
-
- if(U_FAILURE(*err) ||
- localeID == NULL ||
- lang == NULL ||
- langLength == NULL ||
- script == NULL ||
- scriptLength == NULL ||
- region == NULL ||
- regionLength == NULL) {
- goto error;
- }
-
- subtagLength = _getLanguage(position, lang, *langLength, &position);
- u_terminateChars(lang, *langLength, subtagLength, err);
-
- /*
- * Note that we explicit consider U_STRING_NOT_TERMINATED_WARNING
- * to be an error, because it indicates the user-supplied tag is
- * not well-formed.
- */
- if(*err != U_ZERO_ERROR) {
- goto error;
- }
-
- *langLength = subtagLength;
-
- /*
- * If no language was present, use the value of unknownLanguage
- * instead. Otherwise, move past any separator.
- */
- if (*langLength == 0) {
- uprv_strcpy(
- lang,
- unknownLanguage);
- *langLength = uprv_strlen(lang);
- }
- else if (_isIDSeparator(*position)) {
- ++position;
- }
-
- subtagLength = _getScript(position, script, *scriptLength, &position);
- u_terminateChars(script, *scriptLength, subtagLength, err);
-
- if(*err != U_ZERO_ERROR) {
- goto error;
- }
-
- *scriptLength = subtagLength;
-
- if (*scriptLength > 0) {
- if (uprv_strnicmp(script, unknownScript, *scriptLength) == 0) {
- /**
- * If the script part is the "unknown" script, then don't return it.
- **/
- *scriptLength = 0;
- }
-
- /*
- * Move past any separator.
- */
- if (_isIDSeparator(*position)) {
- ++position;
- }
- }
-
- subtagLength = _getCountry(position, region, *regionLength, &position);
- u_terminateChars(region, *regionLength, subtagLength, err);
-
- if(*err != U_ZERO_ERROR) {
- goto error;
- }
-
- *regionLength = subtagLength;
-
- if (*regionLength > 0) {
- if (uprv_strnicmp(region, unknownRegion, *regionLength) == 0) {
- /**
- * If the region part is the "unknown" region, then don't return it.
- **/
- *regionLength = 0;
- }
- }
-
-exit:
-
- return (int32_t)(position - localeID);
-
-error:
-
- /**
- * If we get here, we have no explicit error, it's the result of an
- * illegal argument.
- **/
- if (!U_FAILURE(*err)) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- goto exit;
-}
-
-static int32_t U_CALLCONV
-createLikelySubtagsString(
- const char* lang,
- int32_t langLength,
- const char* script,
- int32_t scriptLength,
- const char* region,
- int32_t regionLength,
- const char* variants,
- int32_t variantsLength,
- char* tag,
- int32_t tagCapacity,
- UErrorCode* err)
-{
- /**
- * ULOC_FULLNAME_CAPACITY will provide enough capacity
- * that we can build a string that contains the language,
- * script and region code without worrying about overrunning
- * the user-supplied buffer.
- **/
- char tagBuffer[ULOC_FULLNAME_CAPACITY];
- char likelySubtagsBuffer[ULOC_FULLNAME_CAPACITY];
- int32_t tagBufferLength = 0;
-
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- /**
- * Try the language with the script and region first.
- **/
- if (scriptLength > 0 && regionLength > 0) {
-
- const char* likelySubtags = NULL;
-
- tagBufferLength = createTagString(
- lang,
- langLength,
- script,
- scriptLength,
- region,
- regionLength,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- likelySubtags =
- findLikelySubtags(
- tagBuffer,
- likelySubtagsBuffer,
- sizeof(likelySubtagsBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- if (likelySubtags != NULL) {
- /* Always use the language tag from the
- maximal string, since it may be more
- specific than the one provided. */
- return createTagStringWithAlternates(
- NULL,
- 0,
- NULL,
- 0,
- NULL,
- 0,
- variants,
- variantsLength,
- likelySubtags,
- tag,
- tagCapacity,
- err);
- }
- }
-
- /**
- * Try the language with just the script.
- **/
- if (scriptLength > 0) {
-
- const char* likelySubtags = NULL;
-
- tagBufferLength = createTagString(
- lang,
- langLength,
- script,
- scriptLength,
- NULL,
- 0,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- likelySubtags =
- findLikelySubtags(
- tagBuffer,
- likelySubtagsBuffer,
- sizeof(likelySubtagsBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- if (likelySubtags != NULL) {
- /* Always use the language tag from the
- maximal string, since it may be more
- specific than the one provided. */
- return createTagStringWithAlternates(
- NULL,
- 0,
- NULL,
- 0,
- region,
- regionLength,
- variants,
- variantsLength,
- likelySubtags,
- tag,
- tagCapacity,
- err);
- }
- }
-
- /**
- * Try the language with just the region.
- **/
- if (regionLength > 0) {
-
- const char* likelySubtags = NULL;
-
- createTagString(
- lang,
- langLength,
- NULL,
- 0,
- region,
- regionLength,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- likelySubtags =
- findLikelySubtags(
- tagBuffer,
- likelySubtagsBuffer,
- sizeof(likelySubtagsBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- if (likelySubtags != NULL) {
- /* Always use the language tag from the
- maximal string, since it may be more
- specific than the one provided. */
- return createTagStringWithAlternates(
- NULL,
- 0,
- script,
- scriptLength,
- NULL,
- 0,
- variants,
- variantsLength,
- likelySubtags,
- tag,
- tagCapacity,
- err);
- }
- }
-
- /**
- * Finally, try just the language.
- **/
- {
- const char* likelySubtags = NULL;
-
- createTagString(
- lang,
- langLength,
- NULL,
- 0,
- NULL,
- 0,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- likelySubtags =
- findLikelySubtags(
- tagBuffer,
- likelySubtagsBuffer,
- sizeof(likelySubtagsBuffer),
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- if (likelySubtags != NULL) {
- /* Always use the language tag from the
- maximal string, since it may be more
- specific than the one provided. */
- return createTagStringWithAlternates(
- NULL,
- 0,
- script,
- scriptLength,
- region,
- regionLength,
- variants,
- variantsLength,
- likelySubtags,
- tag,
- tagCapacity,
- err);
- }
- }
-
- return u_terminateChars(
- tag,
- tagCapacity,
- 0,
- err);
-
-error:
-
- if (!U_FAILURE(*err)) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- return -1;
-}
-
-static int32_t
-_uloc_addLikelySubtags(const char* localeID,
- char* maximizedLocaleID,
- int32_t maximizedLocaleIDCapacity,
- UErrorCode* err)
-{
- char lang[ULOC_LANG_CAPACITY];
- int32_t langLength = sizeof(lang);
- char script[ULOC_SCRIPT_CAPACITY];
- int32_t scriptLength = sizeof(script);
- char region[ULOC_COUNTRY_CAPACITY];
- int32_t regionLength = sizeof(region);
- const char* trailing = "";
- int32_t trailingLength = 0;
- int32_t trailingIndex = 0;
- int32_t resultLength = 0;
-
- if(U_FAILURE(*err)) {
- goto error;
- }
- else if (localeID == NULL ||
- maximizedLocaleID == NULL ||
- maximizedLocaleIDCapacity <= 0) {
- goto error;
- }
-
- trailingIndex = parseTagString(
- localeID,
- lang,
- &langLength,
- script,
- &scriptLength,
- region,
- ®ionLength,
- err);
- if(U_FAILURE(*err)) {
- /* Overflow indicates an illegal argument error */
- if (*err == U_BUFFER_OVERFLOW_ERROR) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- goto error;
- }
-
- /* Find the length of the trailing portion. */
- trailing = &localeID[trailingIndex];
- trailingLength = uprv_strlen(trailing);
-
- resultLength =
- createLikelySubtagsString(
- lang,
- langLength,
- script,
- scriptLength,
- region,
- regionLength,
- trailing,
- trailingLength,
- maximizedLocaleID,
- maximizedLocaleIDCapacity,
- err);
-
- if (resultLength == 0) {
- const int32_t localIDLength =
- uprv_strlen(localeID);
-
- /*
- * If we get here, we need to return localeID.
- */
- uprv_memcpy(
- maximizedLocaleID,
- localeID,
- localIDLength <= maximizedLocaleIDCapacity ?
- localIDLength : maximizedLocaleIDCapacity);
-
- resultLength =
- u_terminateChars(
- maximizedLocaleID,
- maximizedLocaleIDCapacity,
- localIDLength,
- err);
- }
-
- return resultLength;
-
-error:
-
- if (!U_FAILURE(*err)) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- return -1;
-}
-
-static int32_t
-_uloc_minimizeSubtags(const char* localeID,
- char* minimizedLocaleID,
- int32_t minimizedLocaleIDCapacity,
- UErrorCode* err)
-{
- /**
- * ULOC_FULLNAME_CAPACITY will provide enough capacity
- * that we can build a string that contains the language,
- * script and region code without worrying about overrunning
- * the user-supplied buffer.
- **/
- char maximizedTagBuffer[ULOC_FULLNAME_CAPACITY];
- int32_t maximizedTagBufferLength = sizeof(maximizedTagBuffer);
-
- char lang[ULOC_LANG_CAPACITY];
- int32_t langLength = sizeof(lang);
- char script[ULOC_SCRIPT_CAPACITY];
- int32_t scriptLength = sizeof(script);
- char region[ULOC_COUNTRY_CAPACITY];
- int32_t regionLength = sizeof(region);
- const char* trailing = "";
- int32_t trailingLength = 0;
- int32_t trailingIndex = 0;
-
- if(U_FAILURE(*err)) {
- goto error;
- }
- else if (localeID == NULL ||
- minimizedLocaleID == NULL ||
- minimizedLocaleIDCapacity <= 0) {
- goto error;
- }
-
- trailingIndex =
- parseTagString(
- localeID,
- lang,
- &langLength,
- script,
- &scriptLength,
- region,
- ®ionLength,
- err);
- if(U_FAILURE(*err)) {
-
- /* Overflow indicates an illegal argument error */
- if (*err == U_BUFFER_OVERFLOW_ERROR) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- goto error;
- }
-
- /* Find the spot where the variants begin, if any. */
- trailing = &localeID[trailingIndex];
- trailingLength = uprv_strlen(trailing);
-
- createTagString(
- lang,
- langLength,
- script,
- scriptLength,
- region,
- regionLength,
- NULL,
- 0,
- maximizedTagBuffer,
- maximizedTagBufferLength,
- err);
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- /**
- * First, we need to first get the maximization
- * from AddLikelySubtags.
- **/
- maximizedTagBufferLength =
- uloc_addLikelySubtags(
- maximizedTagBuffer,
- maximizedTagBuffer,
- maximizedTagBufferLength,
- err);
-
- if(U_FAILURE(*err)) {
- goto error;
- }
-
- /**
- * Start first with just the language.
- **/
- {
- char tagBuffer[ULOC_FULLNAME_CAPACITY];
-
- const int32_t tagBufferLength =
- createLikelySubtagsString(
- lang,
- langLength,
- NULL,
- 0,
- NULL,
- 0,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
-
- if(U_FAILURE(*err)) {
- goto error;
- }
- else if (uprv_strnicmp(
- maximizedTagBuffer,
- tagBuffer,
- tagBufferLength) == 0) {
-
- return createTagString(
- lang,
- langLength,
- NULL,
- 0,
- NULL,
- 0,
- trailing,
- trailingLength,
- minimizedLocaleID,
- minimizedLocaleIDCapacity,
- err);
- }
- }
-
- /**
- * Next, try the language and region.
- **/
- if (regionLength > 0) {
-
- char tagBuffer[ULOC_FULLNAME_CAPACITY];
-
- const int32_t tagBufferLength =
- createLikelySubtagsString(
- lang,
- langLength,
- NULL,
- 0,
- region,
- regionLength,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
-
- if(U_FAILURE(*err)) {
- goto error;
- }
- else if (uprv_strnicmp(
- maximizedTagBuffer,
- tagBuffer,
- tagBufferLength) == 0) {
-
- return createTagString(
- lang,
- langLength,
- NULL,
- 0,
- region,
- regionLength,
- trailing,
- trailingLength,
- minimizedLocaleID,
- minimizedLocaleIDCapacity,
- err);
- }
- }
-
- /**
- * Finally, try the language and script. This is our last chance,
- * since trying with all three subtags would only yield the
- * maximal version that we already have.
- **/
- if (scriptLength > 0 && regionLength > 0) {
- char tagBuffer[ULOC_FULLNAME_CAPACITY];
-
- const int32_t tagBufferLength =
- createLikelySubtagsString(
- lang,
- langLength,
- script,
- scriptLength,
- NULL,
- 0,
- NULL,
- 0,
- tagBuffer,
- sizeof(tagBuffer),
- err);
-
- if(U_FAILURE(*err)) {
- goto error;
- }
- else if (uprv_strnicmp(
- maximizedTagBuffer,
- tagBuffer,
- tagBufferLength) == 0) {
-
- return createTagString(
- lang,
- langLength,
- script,
- scriptLength,
- NULL,
- 0,
- trailing,
- trailingLength,
- minimizedLocaleID,
- minimizedLocaleIDCapacity,
- err);
- }
- }
-
- {
- /**
- * If we got here, return the locale ID parameter.
- **/
- const int32_t localeIDLength = uprv_strlen(localeID);
-
- uprv_memcpy(
- minimizedLocaleID,
- localeID,
- localeIDLength <= minimizedLocaleIDCapacity ?
- localeIDLength : minimizedLocaleIDCapacity);
-
- return u_terminateChars(
- minimizedLocaleID,
- minimizedLocaleIDCapacity,
- localeIDLength,
- err);
- }
-
-error:
-
- if (!U_FAILURE(*err)) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
- }
-
- return -1;
-
-
-}
-
-static UBool
-do_canonicalize(const char* localeID,
- char* buffer,
- int32_t bufferCapacity,
- UErrorCode* err)
-{
- uloc_canonicalize(
- localeID,
- buffer,
- bufferCapacity,
- err);
-
- if (*err == U_STRING_NOT_TERMINATED_WARNING ||
- *err == U_BUFFER_OVERFLOW_ERROR) {
- *err = U_ILLEGAL_ARGUMENT_ERROR;
-
- return FALSE;
- }
- else if (U_FAILURE(*err)) {
-
- return FALSE;
- }
- else {
- return TRUE;
- }
-}
-
-U_DRAFT int32_t U_EXPORT2
-uloc_addLikelySubtags(const char* localeID,
- char* maximizedLocaleID,
- int32_t maximizedLocaleIDCapacity,
- UErrorCode* err)
-{
- char localeBuffer[ULOC_FULLNAME_CAPACITY];
-
- if (!do_canonicalize(
- localeID,
- localeBuffer,
- sizeof(localeBuffer),
- err)) {
- return -1;
- }
- else {
- return _uloc_addLikelySubtags(
- localeBuffer,
- maximizedLocaleID,
- maximizedLocaleIDCapacity,
- err);
- }
-}
-
-U_DRAFT int32_t U_EXPORT2
-uloc_minimizeSubtags(const char* localeID,
- char* minimizedLocaleID,
- int32_t minimizedLocaleIDCapacity,
- UErrorCode* err)
-{
- char localeBuffer[ULOC_FULLNAME_CAPACITY];
-
- if (!do_canonicalize(
- localeID,
- localeBuffer,
- sizeof(localeBuffer),
- err)) {
- return -1;
- }
- else {
- return _uloc_minimizeSubtags(
- localeBuffer,
- minimizedLocaleID,
- minimizedLocaleIDCapacity,
- err);
- }
-}
-
projects / apple / icu.git / blobdiff