--- /dev/null
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (C) 2009-2015, International Business Machines
+* Corporation and others. All Rights Reserved.
+**********************************************************************
+*/
+
+#include "unicode/utypes.h"
+#include "unicode/ures.h"
+#include "unicode/putil.h"
+#include "unicode/uloc.h"
+#include "ustr_imp.h"
+#include "cmemory.h"
+#include "cstring.h"
+#include "putilimp.h"
+#include "uinvchar.h"
+#include "ulocimp.h"
+#include "uassert.h"
+
+
+/* struct holding a single variant */
+typedef struct VariantListEntry {
+ const char *variant;
+ struct VariantListEntry *next;
+} VariantListEntry;
+
+/* struct holding a single attribute value */
+typedef struct AttributeListEntry {
+ const char *attribute;
+ struct AttributeListEntry *next;
+} AttributeListEntry;
+
+/* struct holding a single extension */
+typedef struct ExtensionListEntry {
+ const char *key;
+ const char *value;
+ struct ExtensionListEntry *next;
+} ExtensionListEntry;
+
+#define MAXEXTLANG 3
+typedef struct ULanguageTag {
+ char *buf; /* holding parsed subtags */
+ const char *language;
+ const char *extlang[MAXEXTLANG];
+ const char *script;
+ const char *region;
+ VariantListEntry *variants;
+ ExtensionListEntry *extensions;
+ const char *privateuse;
+ const char *grandfathered;
+} ULanguageTag;
+
+#define MINLEN 2
+#define SEP '-'
+#define PRIVATEUSE 'x'
+#define LDMLEXT 'u'
+
+#define LOCALE_SEP '_'
+#define LOCALE_EXT_SEP '@'
+#define LOCALE_KEYWORD_SEP ';'
+#define LOCALE_KEY_TYPE_SEP '='
+
+#define ISALPHA(c) uprv_isASCIILetter(c)
+#define ISNUMERIC(c) ((c)>='0' && (c)<='9')
+
+static const char EMPTY[] = "";
+static const char LANG_UND[] = "und";
+static const char PRIVATEUSE_KEY[] = "x";
+static const char _POSIX[] = "_POSIX";
+static const char POSIX_KEY[] = "va";
+static const char POSIX_VALUE[] = "posix";
+static const char LOCALE_ATTRIBUTE_KEY[] = "attribute";
+static const char PRIVUSE_VARIANT_PREFIX[] = "lvariant";
+static const char LOCALE_TYPE_YES[] = "yes";
+
+#define LANG_UND_LEN 3
+
+static const char* const GRANDFATHERED[] = {
+/* grandfathered preferred */
+ "art-lojban", "jbo",
+ "cel-gaulish", "xtg-x-cel-gaulish",
+ "en-GB-oed", "en-GB-x-oed",
+ "i-ami", "ami",
+ "i-bnn", "bnn",
+ "i-default", "en-x-i-default",
+ "i-enochian", "und-x-i-enochian",
+ "i-hak", "hak",
+ "i-klingon", "tlh",
+ "i-lux", "lb",
+ "i-mingo", "see-x-i-mingo",
+ "i-navajo", "nv",
+ "i-pwn", "pwn",
+ "i-tao", "tao",
+ "i-tay", "tay",
+ "i-tsu", "tsu",
+ "no-bok", "nb",
+ "no-nyn", "nn",
+ "sgn-be-fr", "sfb",
+ "sgn-be-nl", "vgt",
+ "sgn-ch-de", "sgg",
+ "zh-guoyu", "cmn",
+ "zh-hakka", "hak",
+ "zh-min", "nan-x-zh-min",
+ "zh-min-nan", "nan",
+ "zh-xiang", "hsn",
+ NULL, NULL
+};
+
+static const char DEPRECATEDLANGS[][4] = {
+/* deprecated new */
+ "iw", "he",
+ "ji", "yi",
+ "in", "id"
+};
+
+/*
+* -------------------------------------------------
+*
+* These ultag_ functions may be exposed as APIs later
+*
+* -------------------------------------------------
+*/
+
+static ULanguageTag*
+ultag_parse(const char* tag, int32_t tagLen, int32_t* parsedLen, UErrorCode* status);
+
+static void
+ultag_close(ULanguageTag* langtag);
+
+static const char*
+ultag_getLanguage(const ULanguageTag* langtag);
+
+#if 0
+static const char*
+ultag_getJDKLanguage(const ULanguageTag* langtag);
+#endif
+
+static const char*
+ultag_getExtlang(const ULanguageTag* langtag, int32_t idx);
+
+static int32_t
+ultag_getExtlangSize(const ULanguageTag* langtag);
+
+static const char*
+ultag_getScript(const ULanguageTag* langtag);
+
+static const char*
+ultag_getRegion(const ULanguageTag* langtag);
+
+static const char*
+ultag_getVariant(const ULanguageTag* langtag, int32_t idx);
+
+static int32_t
+ultag_getVariantsSize(const ULanguageTag* langtag);
+
+static const char*
+ultag_getExtensionKey(const ULanguageTag* langtag, int32_t idx);
+
+static const char*
+ultag_getExtensionValue(const ULanguageTag* langtag, int32_t idx);
+
+static int32_t
+ultag_getExtensionsSize(const ULanguageTag* langtag);
+
+static const char*
+ultag_getPrivateUse(const ULanguageTag* langtag);
+
+#if 0
+static const char*
+ultag_getGrandfathered(const ULanguageTag* langtag);
+#endif
+
+/*
+* -------------------------------------------------
+*
+* Language subtag syntax validation functions
+*
+* -------------------------------------------------
+*/
+
+static UBool
+_isAlphaString(const char* s, int32_t len) {
+ int32_t i;
+ for (i = 0; i < len; i++) {
+ if (!ISALPHA(*(s + i))) {
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+static UBool
+_isNumericString(const char* s, int32_t len) {
+ int32_t i;
+ for (i = 0; i < len; i++) {
+ if (!ISNUMERIC(*(s + i))) {
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+static UBool
+_isAlphaNumericString(const char* s, int32_t len) {
+ int32_t i;
+ for (i = 0; i < len; i++) {
+ if (!ISALPHA(*(s + i)) && !ISNUMERIC(*(s + i))) {
+ return FALSE;
+ }
+ }
+ return TRUE;
+}
+
+static UBool
+_isLanguageSubtag(const char* s, int32_t len) {
+ /*
+ * language = 2*3ALPHA ; shortest ISO 639 code
+ * ["-" extlang] ; sometimes followed by
+ * ; extended language subtags
+ * / 4ALPHA ; or reserved for future use
+ * / 5*8ALPHA ; or registered language subtag
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len >= 2 && len <= 8 && _isAlphaString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isExtlangSubtag(const char* s, int32_t len) {
+ /*
+ * extlang = 3ALPHA ; selected ISO 639 codes
+ * *2("-" 3ALPHA) ; permanently reserved
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len == 3 && _isAlphaString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isScriptSubtag(const char* s, int32_t len) {
+ /*
+ * script = 4ALPHA ; ISO 15924 code
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len == 4 && _isAlphaString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isRegionSubtag(const char* s, int32_t len) {
+ /*
+ * region = 2ALPHA ; ISO 3166-1 code
+ * / 3DIGIT ; UN M.49 code
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len == 2 && _isAlphaString(s, len)) {
+ return TRUE;
+ }
+ if (len == 3 && _isNumericString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isVariantSubtag(const char* s, int32_t len) {
+ /*
+ * variant = 5*8alphanum ; registered variants
+ * / (DIGIT 3alphanum)
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len >= 5 && len <= 8 && _isAlphaNumericString(s, len)) {
+ return TRUE;
+ }
+ if (len == 4 && ISNUMERIC(*s) && _isAlphaNumericString(s + 1, 3)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isPrivateuseVariantSubtag(const char* s, int32_t len) {
+ /*
+ * variant = 1*8alphanum ; registered variants
+ * / (DIGIT 3alphanum)
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len >= 1 && len <= 8 && _isAlphaNumericString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isExtensionSingleton(const char* s, int32_t len) {
+ /*
+ * extension = singleton 1*("-" (2*8alphanum))
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len == 1 && ISALPHA(*s) && (uprv_tolower(*s) != PRIVATEUSE)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isExtensionSubtag(const char* s, int32_t len) {
+ /*
+ * extension = singleton 1*("-" (2*8alphanum))
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len >= 2 && len <= 8 && _isAlphaNumericString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isExtensionSubtags(const char* s, int32_t len) {
+ const char *p = s;
+ const char *pSubtag = NULL;
+
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+
+ while ((p - s) < len) {
+ if (*p == SEP) {
+ if (pSubtag == NULL) {
+ return FALSE;
+ }
+ if (!_isExtensionSubtag(pSubtag, (int32_t)(p - pSubtag))) {
+ return FALSE;
+ }
+ pSubtag = NULL;
+ } else if (pSubtag == NULL) {
+ pSubtag = p;
+ }
+ p++;
+ }
+ if (pSubtag == NULL) {
+ return FALSE;
+ }
+ return _isExtensionSubtag(pSubtag, (int32_t)(p - pSubtag));
+}
+
+static UBool
+_isPrivateuseValueSubtag(const char* s, int32_t len) {
+ /*
+ * privateuse = "x" 1*("-" (1*8alphanum))
+ */
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len >= 1 && len <= 8 && _isAlphaNumericString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static UBool
+_isPrivateuseValueSubtags(const char* s, int32_t len) {
+ const char *p = s;
+ const char *pSubtag = NULL;
+
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+
+ while ((p - s) < len) {
+ if (*p == SEP) {
+ if (pSubtag == NULL) {
+ return FALSE;
+ }
+ if (!_isPrivateuseValueSubtag(pSubtag, (int32_t)(p - pSubtag))) {
+ return FALSE;
+ }
+ pSubtag = NULL;
+ } else if (pSubtag == NULL) {
+ pSubtag = p;
+ }
+ p++;
+ }
+ if (pSubtag == NULL) {
+ return FALSE;
+ }
+ return _isPrivateuseValueSubtag(pSubtag, (int32_t)(p - pSubtag));
+}
+
+U_CFUNC UBool
+ultag_isUnicodeLocaleKey(const char* s, int32_t len) {
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+ if (len == 2 && _isAlphaNumericString(s, len)) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+U_CFUNC UBool
+ultag_isUnicodeLocaleType(const char*s, int32_t len) {
+ const char* p;
+ int32_t subtagLen = 0;
+
+ if (len < 0) {
+ len = (int32_t)uprv_strlen(s);
+ }
+
+ for (p = s; len > 0; p++, len--) {
+ if (*p == SEP) {
+ if (subtagLen < 3) {
+ return FALSE;
+ }
+ subtagLen = 0;
+ } else if (ISALPHA(*p) || ISNUMERIC(*p)) {
+ subtagLen++;
+ if (subtagLen > 8) {
+ return FALSE;
+ }
+ } else {
+ return FALSE;
+ }
+ }
+
+ return (subtagLen >= 3);
+}
+/*
+* -------------------------------------------------
+*
+* Helper functions
+*
+* -------------------------------------------------
+*/
+
+static UBool
+_addVariantToList(VariantListEntry **first, VariantListEntry *var) {
+ UBool bAdded = TRUE;
+
+ if (*first == NULL) {
+ var->next = NULL;
+ *first = var;
+ } else {
+ VariantListEntry *prev, *cur;
+ int32_t cmp;
+
+ /* variants order should be preserved */
+ prev = NULL;
+ cur = *first;
+ while (TRUE) {
+ if (cur == NULL) {
+ prev->next = var;
+ var->next = NULL;
+ break;
+ }
+
+ /* Checking for duplicate variant */
+ cmp = uprv_compareInvCharsAsAscii(var->variant, cur->variant);
+ if (cmp == 0) {
+ /* duplicated variant */
+ bAdded = FALSE;
+ break;
+ }
+ prev = cur;
+ cur = cur->next;
+ }
+ }
+
+ return bAdded;
+}
+
+static UBool
+_addAttributeToList(AttributeListEntry **first, AttributeListEntry *attr) {
+ UBool bAdded = TRUE;
+
+ if (*first == NULL) {
+ attr->next = NULL;
+ *first = attr;
+ } else {
+ AttributeListEntry *prev, *cur;
+ int32_t cmp;
+
+ /* reorder variants in alphabetical order */
+ prev = NULL;
+ cur = *first;
+ while (TRUE) {
+ if (cur == NULL) {
+ prev->next = attr;
+ attr->next = NULL;
+ break;
+ }
+ cmp = uprv_compareInvCharsAsAscii(attr->attribute, cur->attribute);
+ if (cmp < 0) {
+ if (prev == NULL) {
+ *first = attr;
+ } else {
+ prev->next = attr;
+ }
+ attr->next = cur;
+ break;
+ }
+ if (cmp == 0) {
+ /* duplicated variant */
+ bAdded = FALSE;
+ break;
+ }
+ prev = cur;
+ cur = cur->next;
+ }
+ }
+
+ return bAdded;
+}
+
+
+static UBool
+_addExtensionToList(ExtensionListEntry **first, ExtensionListEntry *ext, UBool localeToBCP) {
+ UBool bAdded = TRUE;
+
+ if (*first == NULL) {
+ ext->next = NULL;
+ *first = ext;
+ } else {
+ ExtensionListEntry *prev, *cur;
+ int32_t cmp;
+
+ /* reorder variants in alphabetical order */
+ prev = NULL;
+ cur = *first;
+ while (TRUE) {
+ if (cur == NULL) {
+ prev->next = ext;
+ ext->next = NULL;
+ break;
+ }
+ if (localeToBCP) {
+ /* special handling for locale to bcp conversion */
+ int32_t len, curlen;
+
+ len = (int32_t)uprv_strlen(ext->key);
+ curlen = (int32_t)uprv_strlen(cur->key);
+
+ if (len == 1 && curlen == 1) {
+ if (*(ext->key) == *(cur->key)) {
+ cmp = 0;
+ } else if (*(ext->key) == PRIVATEUSE) {
+ cmp = 1;
+ } else if (*(cur->key) == PRIVATEUSE) {
+ cmp = -1;
+ } else {
+ cmp = *(ext->key) - *(cur->key);
+ }
+ } else if (len == 1) {
+ cmp = *(ext->key) - LDMLEXT;
+ } else if (curlen == 1) {
+ cmp = LDMLEXT - *(cur->key);
+ } else {
+ cmp = uprv_compareInvCharsAsAscii(ext->key, cur->key);
+ /* Both are u extension keys - we need special handling for 'attribute' */
+ if (cmp != 0) {
+ if (uprv_strcmp(cur->key, LOCALE_ATTRIBUTE_KEY) == 0) {
+ cmp = 1;
+ } else if (uprv_strcmp(ext->key, LOCALE_ATTRIBUTE_KEY) == 0) {
+ cmp = -1;
+ }
+ }
+ }
+ } else {
+ cmp = uprv_compareInvCharsAsAscii(ext->key, cur->key);
+ }
+ if (cmp < 0) {
+ if (prev == NULL) {
+ *first = ext;
+ } else {
+ prev->next = ext;
+ }
+ ext->next = cur;
+ break;
+ }
+ if (cmp == 0) {
+ /* duplicated extension key */
+ bAdded = FALSE;
+ break;
+ }
+ prev = cur;
+ cur = cur->next;
+ }
+ }
+
+ return bAdded;
+}
+
+static void
+_initializeULanguageTag(ULanguageTag* langtag) {
+ int32_t i;
+
+ langtag->buf = NULL;
+
+ langtag->language = EMPTY;
+ for (i = 0; i < MAXEXTLANG; i++) {
+ langtag->extlang[i] = NULL;
+ }
+
+ langtag->script = EMPTY;
+ langtag->region = EMPTY;
+
+ langtag->variants = NULL;
+ langtag->extensions = NULL;
+
+ langtag->grandfathered = EMPTY;
+ langtag->privateuse = EMPTY;
+}
+
+static int32_t
+_appendLanguageToLanguageTag(const char* localeID, char* appendAt, int32_t capacity, UBool strict, UErrorCode* status) {
+ char buf[ULOC_LANG_CAPACITY];
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ int32_t len, i;
+ int32_t reslen = 0;
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ len = uloc_getLanguage(localeID, buf, sizeof(buf), &tmpStatus);
+ if (U_FAILURE(tmpStatus) || tmpStatus == U_STRING_NOT_TERMINATED_WARNING) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ return 0;
+ }
+ len = 0;
+ }
+
+ /* Note: returned language code is in lower case letters */
+
+ if (len == 0) {
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, LANG_UND, uprv_min(LANG_UND_LEN, capacity - reslen));
+ }
+ reslen += LANG_UND_LEN;
+ } else if (!_isLanguageSubtag(buf, len)) {
+ /* invalid language code */
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ return 0;
+ }
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, LANG_UND, uprv_min(LANG_UND_LEN, capacity - reslen));
+ }
+ reslen += LANG_UND_LEN;
+ } else {
+ /* resolve deprecated */
+ for (i = 0; i < UPRV_LENGTHOF(DEPRECATEDLANGS); i += 2) {
+ if (uprv_compareInvCharsAsAscii(buf, DEPRECATEDLANGS[i]) == 0) {
+ uprv_strcpy(buf, DEPRECATEDLANGS[i + 1]);
+ len = (int32_t)uprv_strlen(buf);
+ break;
+ }
+ }
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, buf, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+ u_terminateChars(appendAt, capacity, reslen, status);
+ return reslen;
+}
+
+static int32_t
+_appendScriptToLanguageTag(const char* localeID, char* appendAt, int32_t capacity, UBool strict, UErrorCode* status) {
+ char buf[ULOC_SCRIPT_CAPACITY];
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ int32_t len;
+ int32_t reslen = 0;
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ len = uloc_getScript(localeID, buf, sizeof(buf), &tmpStatus);
+ if (U_FAILURE(tmpStatus) || tmpStatus == U_STRING_NOT_TERMINATED_WARNING) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ return 0;
+ }
+
+ if (len > 0) {
+ if (!_isScriptSubtag(buf, len)) {
+ /* invalid script code */
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ return 0;
+ } else {
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, buf, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+ }
+ u_terminateChars(appendAt, capacity, reslen, status);
+ return reslen;
+}
+
+static int32_t
+_appendRegionToLanguageTag(const char* localeID, char* appendAt, int32_t capacity, UBool strict, UErrorCode* status) {
+ char buf[ULOC_COUNTRY_CAPACITY];
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ int32_t len;
+ int32_t reslen = 0;
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ len = uloc_getCountry(localeID, buf, sizeof(buf), &tmpStatus);
+ if (U_FAILURE(tmpStatus) || tmpStatus == U_STRING_NOT_TERMINATED_WARNING) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ return 0;
+ }
+
+ if (len > 0) {
+ if (!_isRegionSubtag(buf, len)) {
+ /* invalid region code */
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ return 0;
+ } else {
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, buf, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+ }
+ u_terminateChars(appendAt, capacity, reslen, status);
+ return reslen;
+}
+
+static int32_t
+_appendVariantsToLanguageTag(const char* localeID, char* appendAt, int32_t capacity, UBool strict, UBool *hadPosix, UErrorCode* status) {
+ char buf[ULOC_FULLNAME_CAPACITY];
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ int32_t len, i;
+ int32_t reslen = 0;
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ len = uloc_getVariant(localeID, buf, sizeof(buf), &tmpStatus);
+ if (U_FAILURE(tmpStatus) || tmpStatus == U_STRING_NOT_TERMINATED_WARNING) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ return 0;
+ }
+
+ if (len > 0) {
+ char *p, *pVar;
+ UBool bNext = TRUE;
+ VariantListEntry *var;
+ VariantListEntry *varFirst = NULL;
+
+ pVar = NULL;
+ p = buf;
+ while (bNext) {
+ if (*p == SEP || *p == LOCALE_SEP || *p == 0) {
+ if (*p == 0) {
+ bNext = FALSE;
+ } else {
+ *p = 0; /* terminate */
+ }
+ if (pVar == NULL) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ /* ignore empty variant */
+ } else {
+ /* ICU uses upper case letters for variants, but
+ the canonical format is lowercase in BCP47 */
+ for (i = 0; *(pVar + i) != 0; i++) {
+ *(pVar + i) = uprv_tolower(*(pVar + i));
+ }
+
+ /* validate */
+ if (_isVariantSubtag(pVar, -1)) {
+ if (uprv_strcmp(pVar,POSIX_VALUE) || len != (int32_t)uprv_strlen(POSIX_VALUE)) {
+ /* emit the variant to the list */
+ var = (VariantListEntry*)uprv_malloc(sizeof(VariantListEntry));
+ if (var == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ break;
+ }
+ var->variant = pVar;
+ if (!_addVariantToList(&varFirst, var)) {
+ /* duplicated variant */
+ uprv_free(var);
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ }
+ } else {
+ /* Special handling for POSIX variant, need to remember that we had it and then */
+ /* treat it like an extension later. */
+ *hadPosix = TRUE;
+ }
+ } else if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ } else if (_isPrivateuseValueSubtag(pVar, -1)) {
+ /* Handle private use subtags separately */
+ break;
+ }
+ }
+ /* reset variant starting position */
+ pVar = NULL;
+ } else if (pVar == NULL) {
+ pVar = p;
+ }
+ p++;
+ }
+
+ if (U_SUCCESS(*status)) {
+ if (varFirst != NULL) {
+ int32_t varLen;
+
+ /* write out validated/normalized variants to the target */
+ var = varFirst;
+ while (var != NULL) {
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+ varLen = (int32_t)uprv_strlen(var->variant);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, var->variant, uprv_min(varLen, capacity - reslen));
+ }
+ reslen += varLen;
+ var = var->next;
+ }
+ }
+ }
+
+ /* clean up */
+ var = varFirst;
+ while (var != NULL) {
+ VariantListEntry *tmpVar = var->next;
+ uprv_free(var);
+ var = tmpVar;
+ }
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+ }
+
+ u_terminateChars(appendAt, capacity, reslen, status);
+ return reslen;
+}
+
+static int32_t
+_appendKeywordsToLanguageTag(const char* localeID, char* appendAt, int32_t capacity, UBool strict, UBool hadPosix, UErrorCode* status) {
+ char buf[ULOC_KEYWORD_AND_VALUES_CAPACITY];
+ char attrBuf[ULOC_KEYWORD_AND_VALUES_CAPACITY] = { 0 };
+ int32_t attrBufLength = 0;
+ UEnumeration *keywordEnum = NULL;
+ int32_t reslen = 0;
+
+ keywordEnum = uloc_openKeywords(localeID, status);
+ if (U_FAILURE(*status) && !hadPosix) {
+ uenum_close(keywordEnum);
+ return 0;
+ }
+ if (keywordEnum != NULL || hadPosix) {
+ /* reorder extensions */
+ int32_t len;
+ const char *key;
+ ExtensionListEntry *firstExt = NULL;
+ ExtensionListEntry *ext;
+ AttributeListEntry *firstAttr = NULL;
+ AttributeListEntry *attr;
+ char *attrValue;
+ char extBuf[ULOC_KEYWORD_AND_VALUES_CAPACITY];
+ char *pExtBuf = extBuf;
+ int32_t extBufCapacity = sizeof(extBuf);
+ const char *bcpKey=nullptr, *bcpValue=nullptr;
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ int32_t keylen;
+ UBool isBcpUExt;
+
+ while (TRUE) {
+ key = uenum_next(keywordEnum, NULL, status);
+ if (key == NULL) {
+ break;
+ }
+ len = uloc_getKeywordValue(localeID, key, buf, sizeof(buf), &tmpStatus);
+ /* buf must be null-terminated */
+ if (U_FAILURE(tmpStatus) || tmpStatus == U_STRING_NOT_TERMINATED_WARNING) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ /* ignore this keyword */
+ tmpStatus = U_ZERO_ERROR;
+ continue;
+ }
+
+ keylen = (int32_t)uprv_strlen(key);
+ isBcpUExt = (keylen > 1);
+
+ /* special keyword used for representing Unicode locale attributes */
+ if (uprv_strcmp(key, LOCALE_ATTRIBUTE_KEY) == 0) {
+ if (len > 0) {
+ int32_t i = 0;
+ while (TRUE) {
+ attrBufLength = 0;
+ for (; i < len; i++) {
+ if (buf[i] != '-') {
+ attrBuf[attrBufLength++] = buf[i];
+ } else {
+ i++;
+ break;
+ }
+ }
+ if (attrBufLength > 0) {
+ attrBuf[attrBufLength] = 0;
+
+ } else if (i >= len){
+ break;
+ }
+
+ /* create AttributeListEntry */
+ attr = (AttributeListEntry*)uprv_malloc(sizeof(AttributeListEntry));
+ if (attr == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ break;
+ }
+ attrValue = (char*)uprv_malloc(attrBufLength + 1);
+ if (attrValue == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ break;
+ }
+ uprv_strcpy(attrValue, attrBuf);
+ attr->attribute = attrValue;
+
+ if (!_addAttributeToList(&firstAttr, attr)) {
+ uprv_free(attr);
+ uprv_free(attrValue);
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ }
+ }
+ /* for a place holder ExtensionListEntry */
+ bcpKey = LOCALE_ATTRIBUTE_KEY;
+ bcpValue = NULL;
+ }
+ } else if (isBcpUExt) {
+ bcpKey = uloc_toUnicodeLocaleKey(key);
+ if (bcpKey == NULL) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ continue;
+ }
+
+ /* we've checked buf is null-terminated above */
+ bcpValue = uloc_toUnicodeLocaleType(key, buf);
+ if (bcpValue == NULL) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ continue;
+ }
+ if (bcpValue == buf) {
+ /*
+ When uloc_toUnicodeLocaleType(key, buf) returns the
+ input value as is, the value is well-formed, but has
+ no known mapping. This implementation normalizes the
+ the value to lower case
+ */
+ int32_t bcpValueLen = uprv_strlen(bcpValue);
+ if (bcpValueLen < extBufCapacity) {
+ uprv_strcpy(pExtBuf, bcpValue);
+ T_CString_toLowerCase(pExtBuf);
+
+ bcpValue = pExtBuf;
+
+ pExtBuf += (bcpValueLen + 1);
+ extBufCapacity -= (bcpValueLen + 1);
+ } else {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ continue;
+ }
+ }
+ } else {
+ if (*key == PRIVATEUSE) {
+ if (!_isPrivateuseValueSubtags(buf, len)) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ continue;
+ }
+ } else {
+ if (!_isExtensionSingleton(key, keylen) || !_isExtensionSubtags(buf, len)) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ continue;
+ }
+ }
+ bcpKey = key;
+ if ((len + 1) < extBufCapacity) {
+ uprv_memcpy(pExtBuf, buf, len);
+ bcpValue = pExtBuf;
+
+ pExtBuf += len;
+
+ *pExtBuf = 0;
+ pExtBuf++;
+
+ extBufCapacity -= (len + 1);
+ } else {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ }
+
+ /* create ExtensionListEntry */
+ ext = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (ext == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ break;
+ }
+ ext->key = bcpKey;
+ ext->value = bcpValue;
+
+ if (!_addExtensionToList(&firstExt, ext, TRUE)) {
+ uprv_free(ext);
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ }
+ }
+
+ /* Special handling for POSIX variant - add the keywords for POSIX */
+ if (hadPosix) {
+ /* create ExtensionListEntry for POSIX */
+ ext = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (ext == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ goto cleanup;
+ }
+ ext->key = POSIX_KEY;
+ ext->value = POSIX_VALUE;
+
+ if (!_addExtensionToList(&firstExt, ext, TRUE)) {
+ uprv_free(ext);
+ }
+ }
+
+ if (U_SUCCESS(*status) && (firstExt != NULL || firstAttr != NULL)) {
+ UBool startLDMLExtension = FALSE;
+ for (ext = firstExt; ext; ext = ext->next) {
+ if (!startLDMLExtension && uprv_strlen(ext->key) > 1) {
+ /* first LDML u singlton extension */
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+ if (reslen < capacity) {
+ *(appendAt + reslen) = LDMLEXT;
+ }
+ reslen++;
+
+ startLDMLExtension = TRUE;
+ }
+
+ /* write out the sorted BCP47 attributes, extensions and private use */
+ if (uprv_strcmp(ext->key, LOCALE_ATTRIBUTE_KEY) == 0) {
+ /* write the value for the attributes */
+ for (attr = firstAttr; attr; attr = attr->next) {
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+ len = (int32_t)uprv_strlen(attr->attribute);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, attr->attribute, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+ } else {
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+ len = (int32_t)uprv_strlen(ext->key);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, ext->key, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ if (reslen < capacity) {
+ *(appendAt + reslen) = SEP;
+ }
+ reslen++;
+ len = (int32_t)uprv_strlen(ext->value);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, ext->value, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+ }
+ }
+cleanup:
+ /* clean up */
+ ext = firstExt;
+ while (ext != NULL) {
+ ExtensionListEntry *tmpExt = ext->next;
+ uprv_free(ext);
+ ext = tmpExt;
+ }
+
+ attr = firstAttr;
+ while (attr != NULL) {
+ AttributeListEntry *tmpAttr = attr->next;
+ char *pValue = (char *)attr->attribute;
+ uprv_free(pValue);
+ uprv_free(attr);
+ attr = tmpAttr;
+ }
+
+ uenum_close(keywordEnum);
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+ }
+
+ return u_terminateChars(appendAt, capacity, reslen, status);
+}
+
+/**
+ * Append keywords parsed from LDML extension value
+ * e.g. "u-ca-gregory-co-trad" -> {calendar = gregorian} {collation = traditional}
+ * Note: char* buf is used for storing keywords
+ */
+static void
+_appendLDMLExtensionAsKeywords(const char* ldmlext, ExtensionListEntry** appendTo, char* buf, int32_t bufSize, UBool *posixVariant, UErrorCode *status) {
+ const char *pTag; /* beginning of current subtag */
+ const char *pKwds; /* beginning of key-type pairs */
+ UBool variantExists = *posixVariant;
+
+ ExtensionListEntry *kwdFirst = NULL; /* first LDML keyword */
+ ExtensionListEntry *kwd, *nextKwd;
+
+ AttributeListEntry *attrFirst = NULL; /* first attribute */
+ AttributeListEntry *attr, *nextAttr;
+
+ int32_t len;
+ int32_t bufIdx = 0;
+
+ char attrBuf[ULOC_KEYWORD_AND_VALUES_CAPACITY];
+ int32_t attrBufIdx = 0;
+
+ /* Reset the posixVariant value */
+ *posixVariant = FALSE;
+
+ pTag = ldmlext;
+ pKwds = NULL;
+
+ /* Iterate through u extension attributes */
+ while (*pTag) {
+ /* locate next separator char */
+ for (len = 0; *(pTag + len) && *(pTag + len) != SEP; len++);
+
+ if (ultag_isUnicodeLocaleKey(pTag, len)) {
+ pKwds = pTag;
+ break;
+ }
+
+ /* add this attribute to the list */
+ attr = (AttributeListEntry*)uprv_malloc(sizeof(AttributeListEntry));
+ if (attr == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ goto cleanup;
+ }
+
+ if (len < (int32_t)sizeof(attrBuf) - attrBufIdx) {
+ uprv_memcpy(&attrBuf[attrBufIdx], pTag, len);
+ attrBuf[attrBufIdx + len] = 0;
+ attr->attribute = &attrBuf[attrBufIdx];
+ attrBufIdx += (len + 1);
+ } else {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ goto cleanup;
+ }
+
+ if (!_addAttributeToList(&attrFirst, attr)) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ uprv_free(attr);
+ goto cleanup;
+ }
+
+ /* next tag */
+ pTag += len;
+ if (*pTag) {
+ /* next to the separator */
+ pTag++;
+ }
+ }
+
+ if (attrFirst) {
+ /* emit attributes as an LDML keyword, e.g. attribute=attr1-attr2 */
+
+ if (attrBufIdx > bufSize) {
+ /* attrBufIdx == <total length of attribute subtag> + 1 */
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ goto cleanup;
+ }
+
+ kwd = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (kwd == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ goto cleanup;
+ }
+
+ kwd->key = LOCALE_ATTRIBUTE_KEY;
+ kwd->value = buf;
+
+ /* attribute subtags sorted in alphabetical order as type */
+ attr = attrFirst;
+ while (attr != NULL) {
+ nextAttr = attr->next;
+
+ /* buffer size check is done above */
+ if (attr != attrFirst) {
+ *(buf + bufIdx) = SEP;
+ bufIdx++;
+ }
+
+ len = uprv_strlen(attr->attribute);
+ uprv_memcpy(buf + bufIdx, attr->attribute, len);
+ bufIdx += len;
+
+ attr = nextAttr;
+ }
+ *(buf + bufIdx) = 0;
+ bufIdx++;
+
+ if (!_addExtensionToList(&kwdFirst, kwd, FALSE)) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ uprv_free(kwd);
+ goto cleanup;
+ }
+
+ /* once keyword entry is created, delete the attribute list */
+ attr = attrFirst;
+ while (attr != NULL) {
+ nextAttr = attr->next;
+ uprv_free(attr);
+ attr = nextAttr;
+ }
+ attrFirst = NULL;
+ }
+
+ if (pKwds) {
+ const char *pBcpKey = NULL; /* u extenstion key subtag */
+ const char *pBcpType = NULL; /* beginning of u extension type subtag(s) */
+ int32_t bcpKeyLen = 0;
+ int32_t bcpTypeLen = 0;
+ UBool isDone = FALSE;
+
+ pTag = pKwds;
+ /* BCP47 representation of LDML key/type pairs */
+ while (!isDone) {
+ const char *pNextBcpKey = NULL;
+ int32_t nextBcpKeyLen = 0;
+ UBool emitKeyword = FALSE;
+
+ if (*pTag) {
+ /* locate next separator char */
+ for (len = 0; *(pTag + len) && *(pTag + len) != SEP; len++);
+
+ if (ultag_isUnicodeLocaleKey(pTag, len)) {
+ if (pBcpKey) {
+ emitKeyword = TRUE;
+ pNextBcpKey = pTag;
+ nextBcpKeyLen = len;
+ } else {
+ pBcpKey = pTag;
+ bcpKeyLen = len;
+ }
+ } else {
+ U_ASSERT(pBcpKey != NULL);
+ /* within LDML type subtags */
+ if (pBcpType) {
+ bcpTypeLen += (len + 1);
+ } else {
+ pBcpType = pTag;
+ bcpTypeLen = len;
+ }
+ }
+
+ /* next tag */
+ pTag += len;
+ if (*pTag) {
+ /* next to the separator */
+ pTag++;
+ }
+ } else {
+ /* processing last one */
+ emitKeyword = TRUE;
+ isDone = TRUE;
+ }
+
+ if (emitKeyword) {
+ const char *pKey = NULL; /* LDML key */
+ const char *pType = NULL; /* LDML type */
+
+ char bcpKeyBuf[9]; /* BCP key length is always 2 for now */
+
+ U_ASSERT(pBcpKey != NULL);
+
+ if (bcpKeyLen >= (int32_t)sizeof(bcpKeyBuf)) {
+ /* the BCP key is invalid */
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ goto cleanup;
+ }
+
+ uprv_strncpy(bcpKeyBuf, pBcpKey, bcpKeyLen);
+ bcpKeyBuf[bcpKeyLen] = 0;
+
+ /* u extension key to LDML key */
+ pKey = uloc_toLegacyKey(bcpKeyBuf);
+ if (pKey == NULL) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ goto cleanup;
+ }
+ if (pKey == bcpKeyBuf) {
+ /*
+ The key returned by toLegacyKey points to the input buffer.
+ We normalize the result key to lower case.
+ */
+ T_CString_toLowerCase(bcpKeyBuf);
+ if (bufSize - bufIdx - 1 >= bcpKeyLen) {
+ uprv_memcpy(buf + bufIdx, bcpKeyBuf, bcpKeyLen);
+ pKey = buf + bufIdx;
+ bufIdx += bcpKeyLen;
+ *(buf + bufIdx) = 0;
+ bufIdx++;
+ } else {
+ *status = U_BUFFER_OVERFLOW_ERROR;
+ goto cleanup;
+ }
+ }
+
+ if (pBcpType) {
+ char bcpTypeBuf[128]; /* practically long enough even considering multiple subtag type */
+ if (bcpTypeLen >= (int32_t)sizeof(bcpTypeBuf)) {
+ /* the BCP type is too long */
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ goto cleanup;
+ }
+
+ uprv_strncpy(bcpTypeBuf, pBcpType, bcpTypeLen);
+ bcpTypeBuf[bcpTypeLen] = 0;
+
+ /* BCP type to locale type */
+ pType = uloc_toLegacyType(pKey, bcpTypeBuf);
+ if (pType == NULL) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ goto cleanup;
+ }
+ if (pType == bcpTypeBuf) {
+ /*
+ The type returned by toLegacyType points to the input buffer.
+ We normalize the result type to lower case.
+ */
+ /* normalize to lower case */
+ T_CString_toLowerCase(bcpTypeBuf);
+ if (bufSize - bufIdx - 1 >= bcpTypeLen) {
+ uprv_memcpy(buf + bufIdx, bcpTypeBuf, bcpTypeLen);
+ pType = buf + bufIdx;
+ bufIdx += bcpTypeLen;
+ *(buf + bufIdx) = 0;
+ bufIdx++;
+ } else {
+ *status = U_BUFFER_OVERFLOW_ERROR;
+ goto cleanup;
+ }
+ }
+ } else {
+ /* typeless - default type value is "yes" */
+ pType = LOCALE_TYPE_YES;
+ }
+
+ /* Special handling for u-va-posix, since we want to treat this as a variant,
+ not as a keyword */
+ if (!variantExists && !uprv_strcmp(pKey, POSIX_KEY) && !uprv_strcmp(pType, POSIX_VALUE) ) {
+ *posixVariant = TRUE;
+ } else {
+ /* create an ExtensionListEntry for this keyword */
+ kwd = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (kwd == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ goto cleanup;
+ }
+
+ kwd->key = pKey;
+ kwd->value = pType;
+
+ if (!_addExtensionToList(&kwdFirst, kwd, FALSE)) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ uprv_free(kwd);
+ goto cleanup;
+ }
+ }
+
+ pBcpKey = pNextBcpKey;
+ bcpKeyLen = pNextBcpKey != NULL ? nextBcpKeyLen : 0;
+ pBcpType = NULL;
+ bcpTypeLen = 0;
+ }
+ }
+ }
+
+ kwd = kwdFirst;
+ while (kwd != NULL) {
+ nextKwd = kwd->next;
+ _addExtensionToList(appendTo, kwd, FALSE);
+ kwd = nextKwd;
+ }
+
+ return;
+
+cleanup:
+ attr = attrFirst;
+ while (attr != NULL) {
+ nextAttr = attr->next;
+ uprv_free(attr);
+ attr = nextAttr;
+ }
+
+ kwd = kwdFirst;
+ while (kwd != NULL) {
+ nextKwd = kwd->next;
+ uprv_free(kwd);
+ kwd = nextKwd;
+ }
+}
+
+
+static int32_t
+_appendKeywords(ULanguageTag* langtag, char* appendAt, int32_t capacity, UErrorCode* status) {
+ int32_t reslen = 0;
+ int32_t i, n;
+ int32_t len;
+ ExtensionListEntry *kwdFirst = NULL;
+ ExtensionListEntry *kwd;
+ const char *key, *type;
+ char *kwdBuf = NULL;
+ int32_t kwdBufLength = capacity;
+ UBool posixVariant = FALSE;
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ kwdBuf = (char*)uprv_malloc(kwdBufLength);
+ if (kwdBuf == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ return 0;
+ }
+
+ /* Determine if variants already exists */
+ if (ultag_getVariantsSize(langtag)) {
+ posixVariant = TRUE;
+ }
+
+ n = ultag_getExtensionsSize(langtag);
+
+ /* resolve locale keywords and reordering keys */
+ for (i = 0; i < n; i++) {
+ key = ultag_getExtensionKey(langtag, i);
+ type = ultag_getExtensionValue(langtag, i);
+ if (*key == LDMLEXT) {
+ _appendLDMLExtensionAsKeywords(type, &kwdFirst, kwdBuf, kwdBufLength, &posixVariant, status);
+ if (U_FAILURE(*status)) {
+ break;
+ }
+ } else {
+ kwd = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (kwd == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ break;
+ }
+ kwd->key = key;
+ kwd->value = type;
+ if (!_addExtensionToList(&kwdFirst, kwd, FALSE)) {
+ uprv_free(kwd);
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ }
+ }
+ }
+
+ if (U_SUCCESS(*status)) {
+ type = ultag_getPrivateUse(langtag);
+ if ((int32_t)uprv_strlen(type) > 0) {
+ /* add private use as a keyword */
+ kwd = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (kwd == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ } else {
+ kwd->key = PRIVATEUSE_KEY;
+ kwd->value = type;
+ if (!_addExtensionToList(&kwdFirst, kwd, FALSE)) {
+ uprv_free(kwd);
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ }
+ }
+ }
+
+ /* If a POSIX variant was in the extensions, write it out before writing the keywords. */
+
+ if (U_SUCCESS(*status) && posixVariant) {
+ len = (int32_t) uprv_strlen(_POSIX);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, _POSIX, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+
+ if (U_SUCCESS(*status) && kwdFirst != NULL) {
+ /* write out the sorted keywords */
+ UBool firstValue = TRUE;
+ kwd = kwdFirst;
+ do {
+ if (reslen < capacity) {
+ if (firstValue) {
+ /* '@' */
+ *(appendAt + reslen) = LOCALE_EXT_SEP;
+ firstValue = FALSE;
+ } else {
+ /* ';' */
+ *(appendAt + reslen) = LOCALE_KEYWORD_SEP;
+ }
+ }
+ reslen++;
+
+ /* key */
+ len = (int32_t)uprv_strlen(kwd->key);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, kwd->key, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+
+ /* '=' */
+ if (reslen < capacity) {
+ *(appendAt + reslen) = LOCALE_KEY_TYPE_SEP;
+ }
+ reslen++;
+
+ /* type */
+ len = (int32_t)uprv_strlen(kwd->value);
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt + reslen, kwd->value, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+
+ kwd = kwd->next;
+ } while (kwd);
+ }
+
+ /* clean up */
+ kwd = kwdFirst;
+ while (kwd != NULL) {
+ ExtensionListEntry *tmpKwd = kwd->next;
+ uprv_free(kwd);
+ kwd = tmpKwd;
+ }
+
+ uprv_free(kwdBuf);
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ return u_terminateChars(appendAt, capacity, reslen, status);
+}
+
+static int32_t
+_appendPrivateuseToLanguageTag(const char* localeID, char* appendAt, int32_t capacity, UBool strict, UBool hadPosix, UErrorCode* status) {
+ (void)hadPosix;
+ char buf[ULOC_FULLNAME_CAPACITY];
+ char tmpAppend[ULOC_FULLNAME_CAPACITY];
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ int32_t len, i;
+ int32_t reslen = 0;
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ len = uloc_getVariant(localeID, buf, sizeof(buf), &tmpStatus);
+ if (U_FAILURE(tmpStatus) || tmpStatus == U_STRING_NOT_TERMINATED_WARNING) {
+ if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ }
+ return 0;
+ }
+
+ if (len > 0) {
+ char *p, *pPriv;
+ UBool bNext = TRUE;
+ UBool firstValue = TRUE;
+ UBool writeValue;
+
+ pPriv = NULL;
+ p = buf;
+ while (bNext) {
+ writeValue = FALSE;
+ if (*p == SEP || *p == LOCALE_SEP || *p == 0) {
+ if (*p == 0) {
+ bNext = FALSE;
+ } else {
+ *p = 0; /* terminate */
+ }
+ if (pPriv != NULL) {
+ /* Private use in the canonical format is lowercase in BCP47 */
+ for (i = 0; *(pPriv + i) != 0; i++) {
+ *(pPriv + i) = uprv_tolower(*(pPriv + i));
+ }
+
+ /* validate */
+ if (_isPrivateuseValueSubtag(pPriv, -1)) {
+ if (firstValue) {
+ if (!_isVariantSubtag(pPriv, -1)) {
+ writeValue = TRUE;
+ }
+ } else {
+ writeValue = TRUE;
+ }
+ } else if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ break;
+ } else {
+ break;
+ }
+
+ if (writeValue) {
+ if (reslen < capacity) {
+ tmpAppend[reslen++] = SEP;
+ }
+
+ if (firstValue) {
+ if (reslen < capacity) {
+ tmpAppend[reslen++] = *PRIVATEUSE_KEY;
+ }
+
+ if (reslen < capacity) {
+ tmpAppend[reslen++] = SEP;
+ }
+
+ len = (int32_t)uprv_strlen(PRIVUSE_VARIANT_PREFIX);
+ if (reslen < capacity) {
+ uprv_memcpy(tmpAppend + reslen, PRIVUSE_VARIANT_PREFIX, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+
+ if (reslen < capacity) {
+ tmpAppend[reslen++] = SEP;
+ }
+
+ firstValue = FALSE;
+ }
+
+ len = (int32_t)uprv_strlen(pPriv);
+ if (reslen < capacity) {
+ uprv_memcpy(tmpAppend + reslen, pPriv, uprv_min(len, capacity - reslen));
+ }
+ reslen += len;
+ }
+ }
+ /* reset private use starting position */
+ pPriv = NULL;
+ } else if (pPriv == NULL) {
+ pPriv = p;
+ }
+ p++;
+ }
+
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+ }
+
+ if (U_SUCCESS(*status)) {
+ len = reslen;
+ if (reslen < capacity) {
+ uprv_memcpy(appendAt, tmpAppend, uprv_min(len, capacity - reslen));
+ }
+ }
+
+ u_terminateChars(appendAt, capacity, reslen, status);
+
+ return reslen;
+}
+
+/*
+* -------------------------------------------------
+*
+* ultag_ functions
+*
+* -------------------------------------------------
+*/
+
+/* Bit flags used by the parser */
+#define LANG 0x0001
+#define EXTL 0x0002
+#define SCRT 0x0004
+#define REGN 0x0008
+#define VART 0x0010
+#define EXTS 0x0020
+#define EXTV 0x0040
+#define PRIV 0x0080
+
+/**
+ * Ticket #12705 - Visual Studio 2015 Update 3 contains a new code optimizer which has problems optimizing
+ * this function. (See https://blogs.msdn.microsoft.com/vcblog/2016/05/04/new-code-optimizer/ )
+ * As a workaround, we will turn off optimization just for this function on VS2015 Update 3 and above.
+ */
+#if (defined(_MSC_VER) && (_MSC_VER >= 1900) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 190024210))
+#pragma optimize( "", off )
+#endif
+
+static ULanguageTag*
+ultag_parse(const char* tag, int32_t tagLen, int32_t* parsedLen, UErrorCode* status) {
+ ULanguageTag *t;
+ char *tagBuf;
+ int16_t next;
+ char *pSubtag, *pNext, *pLastGoodPosition;
+ int32_t subtagLen;
+ int32_t extlangIdx;
+ ExtensionListEntry *pExtension;
+ char *pExtValueSubtag, *pExtValueSubtagEnd;
+ int32_t i;
+ UBool privateuseVar = FALSE;
+ int32_t grandfatheredLen = 0;
+
+ if (parsedLen != NULL) {
+ *parsedLen = 0;
+ }
+
+ if (U_FAILURE(*status)) {
+ return NULL;
+ }
+
+ if (tagLen < 0) {
+ tagLen = (int32_t)uprv_strlen(tag);
+ }
+
+ /* copy the entire string */
+ tagBuf = (char*)uprv_malloc(tagLen + 1);
+ if (tagBuf == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+ uprv_memcpy(tagBuf, tag, tagLen);
+ *(tagBuf + tagLen) = 0;
+
+ /* create a ULanguageTag */
+ t = (ULanguageTag*)uprv_malloc(sizeof(ULanguageTag));
+ if (t == NULL) {
+ uprv_free(tagBuf);
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+ _initializeULanguageTag(t);
+ t->buf = tagBuf;
+
+ if (tagLen < MINLEN) {
+ /* the input tag is too short - return empty ULanguageTag */
+ return t;
+ }
+
+ /* check if the tag is grandfathered */
+ for (i = 0; GRANDFATHERED[i] != NULL; i += 2) {
+ if (uprv_stricmp(GRANDFATHERED[i], tagBuf) == 0) {
+ int32_t newTagLength;
+
+ grandfatheredLen = tagLen; /* back up for output parsedLen */
+ newTagLength = uprv_strlen(GRANDFATHERED[i+1]);
+ if (tagLen < newTagLength) {
+ uprv_free(tagBuf);
+ tagBuf = (char*)uprv_malloc(newTagLength + 1);
+ if (tagBuf == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ ultag_close(t);
+ return NULL;
+ }
+ t->buf = tagBuf;
+ tagLen = newTagLength;
+ }
+ uprv_strcpy(t->buf, GRANDFATHERED[i + 1]);
+ break;
+ }
+ }
+
+ /*
+ * langtag = language
+ * ["-" script]
+ * ["-" region]
+ * *("-" variant)
+ * *("-" extension)
+ * ["-" privateuse]
+ */
+
+ next = LANG | PRIV;
+ pNext = pLastGoodPosition = tagBuf;
+ extlangIdx = 0;
+ pExtension = NULL;
+ pExtValueSubtag = NULL;
+ pExtValueSubtagEnd = NULL;
+
+ while (pNext) {
+ char *pSep;
+
+ pSubtag = pNext;
+
+ /* locate next separator char */
+ pSep = pSubtag;
+ while (*pSep) {
+ if (*pSep == SEP) {
+ break;
+ }
+ pSep++;
+ }
+ if (*pSep == 0) {
+ /* last subtag */
+ pNext = NULL;
+ } else {
+ pNext = pSep + 1;
+ }
+ subtagLen = (int32_t)(pSep - pSubtag);
+
+ if (next & LANG) {
+ if (_isLanguageSubtag(pSubtag, subtagLen)) {
+ *pSep = 0; /* terminate */
+ t->language = T_CString_toLowerCase(pSubtag);
+
+ pLastGoodPosition = pSep;
+ next = EXTL | SCRT | REGN | VART | EXTS | PRIV;
+ continue;
+ }
+ }
+ if (next & EXTL) {
+ if (_isExtlangSubtag(pSubtag, subtagLen)) {
+ *pSep = 0;
+ t->extlang[extlangIdx++] = T_CString_toLowerCase(pSubtag);
+
+ pLastGoodPosition = pSep;
+ if (extlangIdx < 3) {
+ next = EXTL | SCRT | REGN | VART | EXTS | PRIV;
+ } else {
+ next = SCRT | REGN | VART | EXTS | PRIV;
+ }
+ continue;
+ }
+ }
+ if (next & SCRT) {
+ if (_isScriptSubtag(pSubtag, subtagLen)) {
+ char *p = pSubtag;
+
+ *pSep = 0;
+
+ /* to title case */
+ *p = uprv_toupper(*p);
+ p++;
+ for (; *p; p++) {
+ *p = uprv_tolower(*p);
+ }
+
+ t->script = pSubtag;
+
+ pLastGoodPosition = pSep;
+ next = REGN | VART | EXTS | PRIV;
+ continue;
+ }
+ }
+ if (next & REGN) {
+ if (_isRegionSubtag(pSubtag, subtagLen)) {
+ *pSep = 0;
+ t->region = T_CString_toUpperCase(pSubtag);
+
+ pLastGoodPosition = pSep;
+ next = VART | EXTS | PRIV;
+ continue;
+ }
+ }
+ if (next & VART) {
+ if (_isVariantSubtag(pSubtag, subtagLen) ||
+ (privateuseVar && _isPrivateuseVariantSubtag(pSubtag, subtagLen))) {
+ VariantListEntry *var;
+ UBool isAdded;
+
+ var = (VariantListEntry*)uprv_malloc(sizeof(VariantListEntry));
+ if (var == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ goto error;
+ }
+ *pSep = 0;
+ var->variant = T_CString_toUpperCase(pSubtag);
+ isAdded = _addVariantToList(&(t->variants), var);
+ if (!isAdded) {
+ /* duplicated variant entry */
+ uprv_free(var);
+ break;
+ }
+ pLastGoodPosition = pSep;
+ next = VART | EXTS | PRIV;
+ continue;
+ }
+ }
+ if (next & EXTS) {
+ if (_isExtensionSingleton(pSubtag, subtagLen)) {
+ if (pExtension != NULL) {
+ if (pExtValueSubtag == NULL || pExtValueSubtagEnd == NULL) {
+ /* the previous extension is incomplete */
+ uprv_free(pExtension);
+ pExtension = NULL;
+ break;
+ }
+
+ /* terminate the previous extension value */
+ *pExtValueSubtagEnd = 0;
+ pExtension->value = T_CString_toLowerCase(pExtValueSubtag);
+
+ /* insert the extension to the list */
+ if (_addExtensionToList(&(t->extensions), pExtension, FALSE)) {
+ pLastGoodPosition = pExtValueSubtagEnd;
+ } else {
+ /* stop parsing here */
+ uprv_free(pExtension);
+ pExtension = NULL;
+ break;
+ }
+ }
+
+ /* create a new extension */
+ pExtension = (ExtensionListEntry*)uprv_malloc(sizeof(ExtensionListEntry));
+ if (pExtension == NULL) {
+ *status = U_MEMORY_ALLOCATION_ERROR;
+ goto error;
+ }
+ *pSep = 0;
+ pExtension->key = T_CString_toLowerCase(pSubtag);
+ pExtension->value = NULL; /* will be set later */
+
+ /*
+ * reset the start and the end location of extension value
+ * subtags for this extension
+ */
+ pExtValueSubtag = NULL;
+ pExtValueSubtagEnd = NULL;
+
+ next = EXTV;
+ continue;
+ }
+ }
+ if (next & EXTV) {
+ if (_isExtensionSubtag(pSubtag, subtagLen)) {
+ if (pExtValueSubtag == NULL) {
+ /* if the start postion of this extension's value is not yet,
+ this one is the first value subtag */
+ pExtValueSubtag = pSubtag;
+ }
+
+ /* Mark the end of this subtag */
+ pExtValueSubtagEnd = pSep;
+ next = EXTS | EXTV | PRIV;
+
+ continue;
+ }
+ }
+ if (next & PRIV) {
+ if (uprv_tolower(*pSubtag) == PRIVATEUSE) {
+ char *pPrivuseVal;
+
+ if (pExtension != NULL) {
+ /* Process the last extension */
+ if (pExtValueSubtag == NULL || pExtValueSubtagEnd == NULL) {
+ /* the previous extension is incomplete */
+ uprv_free(pExtension);
+ pExtension = NULL;
+ break;
+ } else {
+ /* terminate the previous extension value */
+ *pExtValueSubtagEnd = 0;
+ pExtension->value = T_CString_toLowerCase(pExtValueSubtag);
+
+ /* insert the extension to the list */
+ if (_addExtensionToList(&(t->extensions), pExtension, FALSE)) {
+ pLastGoodPosition = pExtValueSubtagEnd;
+ pExtension = NULL;
+ } else {
+ /* stop parsing here */
+ uprv_free(pExtension);
+ pExtension = NULL;
+ break;
+ }
+ }
+ }
+
+ /* The rest of part will be private use value subtags */
+ if (pNext == NULL) {
+ /* empty private use subtag */
+ break;
+ }
+ /* back up the private use value start position */
+ pPrivuseVal = pNext;
+
+ /* validate private use value subtags */
+ while (pNext) {
+ pSubtag = pNext;
+ pSep = pSubtag;
+ while (*pSep) {
+ if (*pSep == SEP) {
+ break;
+ }
+ pSep++;
+ }
+ if (*pSep == 0) {
+ /* last subtag */
+ pNext = NULL;
+ } else {
+ pNext = pSep + 1;
+ }
+ subtagLen = (int32_t)(pSep - pSubtag);
+
+ if (uprv_strncmp(pSubtag, PRIVUSE_VARIANT_PREFIX, uprv_strlen(PRIVUSE_VARIANT_PREFIX)) == 0) {
+ *pSep = 0;
+ next = VART;
+ privateuseVar = TRUE;
+ break;
+ } else if (_isPrivateuseValueSubtag(pSubtag, subtagLen)) {
+ pLastGoodPosition = pSep;
+ } else {
+ break;
+ }
+ }
+
+ if (next == VART) {
+ continue;
+ }
+
+ if (pLastGoodPosition - pPrivuseVal > 0) {
+ *pLastGoodPosition = 0;
+ t->privateuse = T_CString_toLowerCase(pPrivuseVal);
+ }
+ /* No more subtags, exiting the parse loop */
+ break;
+ }
+ break;
+ }
+
+ /* If we fell through here, it means this subtag is illegal - quit parsing */
+ break;
+ }
+
+ if (pExtension != NULL) {
+ /* Process the last extension */
+ if (pExtValueSubtag == NULL || pExtValueSubtagEnd == NULL) {
+ /* the previous extension is incomplete */
+ uprv_free(pExtension);
+ } else {
+ /* terminate the previous extension value */
+ *pExtValueSubtagEnd = 0;
+ pExtension->value = T_CString_toLowerCase(pExtValueSubtag);
+ /* insert the extension to the list */
+ if (_addExtensionToList(&(t->extensions), pExtension, FALSE)) {
+ pLastGoodPosition = pExtValueSubtagEnd;
+ } else {
+ uprv_free(pExtension);
+ }
+ }
+ }
+
+ if (parsedLen != NULL) {
+ *parsedLen = (grandfatheredLen > 0) ? grandfatheredLen : (int32_t)(pLastGoodPosition - t->buf);
+ }
+
+ return t;
+
+error:
+ ultag_close(t);
+ return NULL;
+}
+
+/**
+* Ticket #12705 - Turn optimization back on.
+*/
+#if (defined(_MSC_VER) && (_MSC_VER >= 1900) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER >= 190024210))
+#pragma optimize( "", on )
+#endif
+
+static void
+ultag_close(ULanguageTag* langtag) {
+
+ if (langtag == NULL) {
+ return;
+ }
+
+ uprv_free(langtag->buf);
+
+ if (langtag->variants) {
+ VariantListEntry *curVar = langtag->variants;
+ while (curVar) {
+ VariantListEntry *nextVar = curVar->next;
+ uprv_free(curVar);
+ curVar = nextVar;
+ }
+ }
+
+ if (langtag->extensions) {
+ ExtensionListEntry *curExt = langtag->extensions;
+ while (curExt) {
+ ExtensionListEntry *nextExt = curExt->next;
+ uprv_free(curExt);
+ curExt = nextExt;
+ }
+ }
+
+ uprv_free(langtag);
+}
+
+static const char*
+ultag_getLanguage(const ULanguageTag* langtag) {
+ return langtag->language;
+}
+
+#if 0
+static const char*
+ultag_getJDKLanguage(const ULanguageTag* langtag) {
+ int32_t i;
+ for (i = 0; DEPRECATEDLANGS[i] != NULL; i += 2) {
+ if (uprv_compareInvCharsAsAscii(DEPRECATEDLANGS[i], langtag->language) == 0) {
+ return DEPRECATEDLANGS[i + 1];
+ }
+ }
+ return langtag->language;
+}
+#endif
+
+static const char*
+ultag_getExtlang(const ULanguageTag* langtag, int32_t idx) {
+ if (idx >= 0 && idx < MAXEXTLANG) {
+ return langtag->extlang[idx];
+ }
+ return NULL;
+}
+
+static int32_t
+ultag_getExtlangSize(const ULanguageTag* langtag) {
+ int32_t size = 0;
+ int32_t i;
+ for (i = 0; i < MAXEXTLANG; i++) {
+ if (langtag->extlang[i]) {
+ size++;
+ }
+ }
+ return size;
+}
+
+static const char*
+ultag_getScript(const ULanguageTag* langtag) {
+ return langtag->script;
+}
+
+static const char*
+ultag_getRegion(const ULanguageTag* langtag) {
+ return langtag->region;
+}
+
+static const char*
+ultag_getVariant(const ULanguageTag* langtag, int32_t idx) {
+ const char *var = NULL;
+ VariantListEntry *cur = langtag->variants;
+ int32_t i = 0;
+ while (cur) {
+ if (i == idx) {
+ var = cur->variant;
+ break;
+ }
+ cur = cur->next;
+ i++;
+ }
+ return var;
+}
+
+static int32_t
+ultag_getVariantsSize(const ULanguageTag* langtag) {
+ int32_t size = 0;
+ VariantListEntry *cur = langtag->variants;
+ while (TRUE) {
+ if (cur == NULL) {
+ break;
+ }
+ size++;
+ cur = cur->next;
+ }
+ return size;
+}
+
+static const char*
+ultag_getExtensionKey(const ULanguageTag* langtag, int32_t idx) {
+ const char *key = NULL;
+ ExtensionListEntry *cur = langtag->extensions;
+ int32_t i = 0;
+ while (cur) {
+ if (i == idx) {
+ key = cur->key;
+ break;
+ }
+ cur = cur->next;
+ i++;
+ }
+ return key;
+}
+
+static const char*
+ultag_getExtensionValue(const ULanguageTag* langtag, int32_t idx) {
+ const char *val = NULL;
+ ExtensionListEntry *cur = langtag->extensions;
+ int32_t i = 0;
+ while (cur) {
+ if (i == idx) {
+ val = cur->value;
+ break;
+ }
+ cur = cur->next;
+ i++;
+ }
+ return val;
+}
+
+static int32_t
+ultag_getExtensionsSize(const ULanguageTag* langtag) {
+ int32_t size = 0;
+ ExtensionListEntry *cur = langtag->extensions;
+ while (TRUE) {
+ if (cur == NULL) {
+ break;
+ }
+ size++;
+ cur = cur->next;
+ }
+ return size;
+}
+
+static const char*
+ultag_getPrivateUse(const ULanguageTag* langtag) {
+ return langtag->privateuse;
+}
+
+#if 0
+static const char*
+ultag_getGrandfathered(const ULanguageTag* langtag) {
+ return langtag->grandfathered;
+}
+#endif
+
+
+/*
+* -------------------------------------------------
+*
+* Locale/BCP47 conversion APIs, exposed as uloc_*
+*
+* -------------------------------------------------
+*/
+U_CAPI int32_t U_EXPORT2
+uloc_toLanguageTag(const char* localeID,
+ char* langtag,
+ int32_t langtagCapacity,
+ UBool strict,
+ UErrorCode* status) {
+ /* char canonical[ULOC_FULLNAME_CAPACITY]; */ /* See #6822 */
+ char canonical[256];
+ int32_t reslen = 0;
+ UErrorCode tmpStatus = U_ZERO_ERROR;
+ UBool hadPosix = FALSE;
+ const char* pKeywordStart;
+
+ /* Note: uloc_canonicalize returns "en_US_POSIX" for input locale ID "". See #6835 */
+ canonical[0] = 0;
+ if (uprv_strlen(localeID) > 0) {
+ uloc_canonicalize(localeID, canonical, sizeof(canonical), &tmpStatus);
+ if (tmpStatus != U_ZERO_ERROR) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ return 0;
+ }
+ }
+
+ /* For handling special case - private use only tag */
+ pKeywordStart = locale_getKeywordsStart(canonical);
+ if (pKeywordStart == canonical) {
+ UEnumeration *kwdEnum;
+ int kwdCnt = 0;
+ UBool done = FALSE;
+
+ kwdEnum = uloc_openKeywords((const char*)canonical, &tmpStatus);
+ if (kwdEnum != NULL) {
+ kwdCnt = uenum_count(kwdEnum, &tmpStatus);
+ if (kwdCnt == 1) {
+ const char *key;
+ int32_t len = 0;
+
+ key = uenum_next(kwdEnum, &len, &tmpStatus);
+ if (len == 1 && *key == PRIVATEUSE) {
+ char buf[ULOC_KEYWORD_AND_VALUES_CAPACITY];
+ buf[0] = PRIVATEUSE;
+ buf[1] = SEP;
+ len = uloc_getKeywordValue(localeID, key, &buf[2], sizeof(buf) - 2, &tmpStatus);
+ if (U_SUCCESS(tmpStatus)) {
+ if (_isPrivateuseValueSubtags(&buf[2], len)) {
+ /* return private use only tag */
+ reslen = len + 2;
+ uprv_memcpy(langtag, buf, uprv_min(reslen, langtagCapacity));
+ u_terminateChars(langtag, langtagCapacity, reslen, status);
+ done = TRUE;
+ } else if (strict) {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ done = TRUE;
+ }
+ /* if not strict mode, then "und" will be returned */
+ } else {
+ *status = U_ILLEGAL_ARGUMENT_ERROR;
+ done = TRUE;
+ }
+ }
+ }
+ uenum_close(kwdEnum);
+ if (done) {
+ return reslen;
+ }
+ }
+ }
+
+ reslen += _appendLanguageToLanguageTag(canonical, langtag, langtagCapacity, strict, status);
+ reslen += _appendScriptToLanguageTag(canonical, langtag + reslen, langtagCapacity - reslen, strict, status);
+ reslen += _appendRegionToLanguageTag(canonical, langtag + reslen, langtagCapacity - reslen, strict, status);
+ reslen += _appendVariantsToLanguageTag(canonical, langtag + reslen, langtagCapacity - reslen, strict, &hadPosix, status);
+ reslen += _appendKeywordsToLanguageTag(canonical, langtag + reslen, langtagCapacity - reslen, strict, hadPosix, status);
+ reslen += _appendPrivateuseToLanguageTag(canonical, langtag + reslen, langtagCapacity - reslen, strict, hadPosix, status);
+
+ return reslen;
+}
+
+
+U_CAPI int32_t U_EXPORT2
+uloc_forLanguageTag(const char* langtag,
+ char* localeID,
+ int32_t localeIDCapacity,
+ int32_t* parsedLength,
+ UErrorCode* status) {
+ ULanguageTag *lt;
+ int32_t reslen = 0;
+ const char *subtag, *p;
+ int32_t len;
+ int32_t i, n;
+ UBool noRegion = TRUE;
+
+ lt = ultag_parse(langtag, -1, parsedLength, status);
+ if (U_FAILURE(*status)) {
+ return 0;
+ }
+
+ /* language */
+ subtag = ultag_getExtlangSize(lt) > 0 ? ultag_getExtlang(lt, 0) : ultag_getLanguage(lt);
+ if (uprv_compareInvCharsAsAscii(subtag, LANG_UND) != 0) {
+ len = (int32_t)uprv_strlen(subtag);
+ if (len > 0) {
+ if (reslen < localeIDCapacity) {
+ uprv_memcpy(localeID, subtag, uprv_min(len, localeIDCapacity - reslen));
+ }
+ reslen += len;
+ }
+ }
+
+ /* script */
+ subtag = ultag_getScript(lt);
+ len = (int32_t)uprv_strlen(subtag);
+ if (len > 0) {
+ if (reslen < localeIDCapacity) {
+ *(localeID + reslen) = LOCALE_SEP;
+ }
+ reslen++;
+
+ /* write out the script in title case */
+ p = subtag;
+ while (*p) {
+ if (reslen < localeIDCapacity) {
+ if (p == subtag) {
+ *(localeID + reslen) = uprv_toupper(*p);
+ } else {
+ *(localeID + reslen) = *p;
+ }
+ }
+ reslen++;
+ p++;
+ }
+ }
+
+ /* region */
+ subtag = ultag_getRegion(lt);
+ len = (int32_t)uprv_strlen(subtag);
+ if (len > 0) {
+ if (reslen < localeIDCapacity) {
+ *(localeID + reslen) = LOCALE_SEP;
+ }
+ reslen++;
+ /* write out the retion in upper case */
+ p = subtag;
+ while (*p) {
+ if (reslen < localeIDCapacity) {
+ *(localeID + reslen) = uprv_toupper(*p);
+ }
+ reslen++;
+ p++;
+ }
+ noRegion = FALSE;
+ }
+
+ /* variants */
+ n = ultag_getVariantsSize(lt);
+ if (n > 0) {
+ if (noRegion) {
+ if (reslen < localeIDCapacity) {
+ *(localeID + reslen) = LOCALE_SEP;
+ }
+ reslen++;
+ }
+
+ for (i = 0; i < n; i++) {
+ subtag = ultag_getVariant(lt, i);
+ if (reslen < localeIDCapacity) {
+ *(localeID + reslen) = LOCALE_SEP;
+ }
+ reslen++;
+ /* write out the variant in upper case */
+ p = subtag;
+ while (*p) {
+ if (reslen < localeIDCapacity) {
+ *(localeID + reslen) = uprv_toupper(*p);
+ }
+ reslen++;
+ p++;
+ }
+ }
+ }
+
+ /* keywords */
+ n = ultag_getExtensionsSize(lt);
+ subtag = ultag_getPrivateUse(lt);
+ if (n > 0 || uprv_strlen(subtag) > 0) {
+ if (reslen == 0 && n > 0) {
+ /* need a language */
+ if (reslen < localeIDCapacity) {
+ uprv_memcpy(localeID + reslen, LANG_UND, uprv_min(LANG_UND_LEN, localeIDCapacity - reslen));
+ }
+ reslen += LANG_UND_LEN;
+ }
+ len = _appendKeywords(lt, localeID + reslen, localeIDCapacity - reslen, status);
+ reslen += len;
+ }
+
+ ultag_close(lt);
+ return u_terminateChars(localeID, localeIDCapacity, reslen, status);
+}
+
+
projects / apple / icu.git / blobdiff