static int32_t
caseMap(const UCaseMap *csm,
uint8_t *dest, int32_t destCapacity,
const uint8_t *src, int32_t srcLength,
int32_t toWhichCase,
UErrorCode *pErrorCode) {
UCaseContext csc={ NULL };
int32_t destLength;
/* check argument values */
if(U_FAILURE(*pErrorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
src==NULL ||
srcLength<-1
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=uprv_strlen((const char *)src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
destLength=0;
csc.p=(void *)src;
csc.limit=srcLength;
if(toWhichCase==TO_LOWER) {
destLength=_caseMap(csm, ucase_toFullLower,
dest, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else /* if(toWhichCase==TO_UPPER) */ {
destLength=_caseMap(csm, ucase_toFullUpper,
dest, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
}
return u_terminateChars((char *)dest, destCapacity, destLength, pErrorCode);
}
U_NAMESPACE_END
// The following must at least allow for rg key value (6) plus terminator (1).
#define ULOC_RG_BUFLEN 8
U_CAPI int32_t U_EXPORT2
ulocimp_getRegionForSupplementalData(const char *localeID, UBool inferRegion,
char *region, int32_t regionCapacity, UErrorCode* status) {
if (U_FAILURE(*status)) {
return 0;
}
char rgBuf[ULOC_RG_BUFLEN];
UErrorCode rgStatus = U_ZERO_ERROR;
// First check for rg keyword value
int32_t rgLen = uloc_getKeywordValue(localeID, "rg", rgBuf, ULOC_RG_BUFLEN, &rgStatus);
if (U_FAILURE(rgStatus) || rgLen != 6) {
rgLen = 0;
} else {
// rgBuf guaranteed to be zero terminated here, with text len 6
char *rgPtr = rgBuf;
for (; *rgPtr!= 0; rgPtr++) {
*rgPtr = uprv_toupper(*rgPtr);
}
rgLen = (uprv_strcmp(rgBuf+2, "ZZZZ") == 0)? 2: 0;
}
if (rgLen == 0) {
// No valid rg keyword value, try for unicode_region_subtag
rgLen = uloc_getCountry(localeID, rgBuf, ULOC_RG_BUFLEN, status);
if (U_FAILURE(*status)) {
rgLen = 0;
} else if (rgLen == 0 && inferRegion) {
// no unicode_region_subtag but inferRegion TRUE, try likely subtags
char locBuf[ULOC_FULLNAME_CAPACITY];
rgStatus = U_ZERO_ERROR;
(void)uloc_addLikelySubtags(localeID, locBuf, ULOC_FULLNAME_CAPACITY, &rgStatus);
if (U_SUCCESS(rgStatus)) {
rgLen = uloc_getCountry(locBuf, rgBuf, ULOC_RG_BUFLEN, status);
if (U_FAILURE(*status)) {
rgLen = 0;
}
}
}
}
rgBuf[rgLen] = 0;
uprv_strncpy(region, rgBuf, regionCapacity);
return u_terminateChars(region, regionCapacity, rgLen, status);
}
int32_t
ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
char *dest, int32_t destCapacity,
const char *src, int32_t srcLength,
UTF8CaseMapper *stringCaseMapper,
icu::Edits *edits,
UErrorCode &errorCode) {
/* check argument values */
if(U_FAILURE(errorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
(src==NULL && srcLength!=0) || srcLength<-1
) {
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=(int32_t)uprv_strlen((const char *)src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
errorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
CheckedArrayByteSink sink(dest, destCapacity);
if (edits != nullptr && (options & U_EDITS_NO_RESET) == 0) {
edits->reset();
}
stringCaseMapper(caseLocale, options, UCASEMAP_BREAK_ITERATOR
(const uint8_t *)src, srcLength, sink, edits, errorCode);
sink.Flush();
if (U_SUCCESS(errorCode)) {
if (sink.Overflowed()) {
errorCode = U_BUFFER_OVERFLOW_ERROR;
} else if (edits != nullptr) {
edits->copyErrorTo(errorCode);
}
}
return u_terminateChars(dest, destCapacity, sink.NumberOfBytesAppended(), &errorCode);
}
U_CAPI int32_t U_EXPORT2
u_parseUTF8(const char *source, int32_t sLen, char *dest, int32_t destCapacity, UErrorCode *status) {
const char *read = source;
int32_t i = 0;
unsigned int value = 0;
if(sLen == -1) {
sLen = (int32_t)strlen(source);
}
while(read < source+sLen) {
sscanf(read, "%2x", &value);
if(i < destCapacity) {
dest[i] = (char)value;
}
i++;
read += 2;
}
return u_terminateChars(dest, destCapacity, i, status);
}
U_CFUNC int32_t
ucasemap_mapUTF8(const UCaseMap *csm,
uint8_t *dest, int32_t destCapacity,
const uint8_t *src, int32_t srcLength,
UTF8CaseMapper *stringCaseMapper,
UErrorCode *pErrorCode) {
int32_t destLength;
/* check argument values */
if(U_FAILURE(*pErrorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
src==NULL ||
srcLength<-1
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=(int32_t)uprv_strlen((const char *)src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
destLength=stringCaseMapper(csm, dest, destCapacity, src, srcLength, pErrorCode);
return u_terminateChars((char *)dest, destCapacity, destLength, pErrorCode);
}
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 or the keywords begin, if any. */
while (_isIDSeparator(localeID[trailingIndex])) {
trailingIndex++;
}
trailing = &localeID[trailingIndex];
trailingLength = (int32_t)uprv_strlen(trailing);
CHECK_TRAILING_VARIANT_SIZE(trailing, trailingLength);
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 = (int32_t)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 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. */
while (_isIDSeparator(localeID[trailingIndex])) {
trailingIndex++;
}
trailing = &localeID[trailingIndex];
trailingLength = (int32_t)uprv_strlen(trailing);
CHECK_TRAILING_VARIANT_SIZE(trailing, trailingLength);
resultLength =
createLikelySubtagsString(
lang,
langLength,
script,
scriptLength,
region,
regionLength,
trailing,
trailingLength,
maximizedLocaleID,
maximizedLocaleIDCapacity,
err);
if (resultLength == 0) {
const int32_t localIDLength = (int32_t)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 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;
}
/**
* 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 = ulocimp_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(U_FAILURE(*err)) {
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 = (int32_t)uprv_strlen(lang);
}
else if (_isIDSeparator(*position)) {
++position;
}
subtagLength = ulocimp_getScript(position, script, *scriptLength, &position);
u_terminateChars(script, *scriptLength, subtagLength, err);
if(U_FAILURE(*err)) {
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 = ulocimp_getCountry(position, region, *regionLength, &position);
u_terminateChars(region, *regionLength, subtagLength, err);
if(U_FAILURE(*err)) {
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;
}
} else if (*position != 0 && *position != '@') {
/* back up over consumed trailing separator */
--position;
}
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;
}
/**
* 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,
(int32_t)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,
(int32_t)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 (*trailing != '@' && capacityRemaining > 0) {
tag[tagLength++] = '_';
--capacityRemaining;
if (capacityRemaining > 0 && !regionAppended) {
/* extra separator is required */
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;
}
static int32_t
caseMap(const UCaseMap *csm,
uint8_t *dest, int32_t destCapacity,
const uint8_t *src, int32_t srcLength,
int32_t toWhichCase,
UErrorCode *pErrorCode) {
int32_t destLength;
/* check argument values */
if(U_FAILURE(*pErrorCode)) {
return 0;
}
if( destCapacity<0 ||
(dest==NULL && destCapacity>0) ||
src==NULL ||
srcLength<-1
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the string length */
if(srcLength==-1) {
srcLength=(int32_t)uprv_strlen((const char *)src);
}
/* check for overlapping source and destination */
if( dest!=NULL &&
((src>=dest && src<(dest+destCapacity)) ||
(dest>=src && dest<(src+srcLength)))
) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
destLength=0;
if(toWhichCase==FOLD_CASE) {
destLength=utf8_foldCase(csm->csp, dest, destCapacity, src, srcLength,
csm->options, pErrorCode);
} else {
UCaseContext csc={ NULL };
csc.p=(void *)src;
csc.limit=srcLength;
if(toWhichCase==TO_LOWER) {
destLength=_caseMap(csm, ucase_toFullLower,
dest, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else if(toWhichCase==TO_UPPER) {
destLength=_caseMap(csm, ucase_toFullUpper,
dest, destCapacity,
src, &csc,
0, srcLength,
pErrorCode);
} else /* if(toWhichCase==TO_TITLE) */ {
#if UCONFIG_NO_BREAK_ITERATION
*pErrorCode=U_UNSUPPORTED_ERROR;
#else
/* UCaseMap is actually non-const in toTitle() APIs. */
UCaseMap *tmp = (UCaseMap *)csm;
destLength=_toTitle(tmp, dest, destCapacity,
src, &csc, srcLength,
pErrorCode);
#endif
}
}
return u_terminateChars((char *)dest, destCapacity, destLength, pErrorCode);
}
