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Diffstat (limited to 'thirdparty/icu4c/common/locdispnames.cpp')
-rw-r--r-- | thirdparty/icu4c/common/locdispnames.cpp | 890 |
1 files changed, 890 insertions, 0 deletions
diff --git a/thirdparty/icu4c/common/locdispnames.cpp b/thirdparty/icu4c/common/locdispnames.cpp new file mode 100644 index 0000000000..47c0667417 --- /dev/null +++ b/thirdparty/icu4c/common/locdispnames.cpp @@ -0,0 +1,890 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 1997-2016, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: locdispnames.cpp +* encoding: UTF-8 +* tab size: 8 (not used) +* indentation:4 +* +* created on: 2010feb25 +* created by: Markus W. Scherer +* +* Code for locale display names, separated out from other .cpp files +* that then do not depend on resource bundle code and display name data. +*/ + +#include "unicode/utypes.h" +#include "unicode/brkiter.h" +#include "unicode/locid.h" +#include "unicode/uenum.h" +#include "unicode/uloc.h" +#include "unicode/ures.h" +#include "unicode/ustring.h" +#include "bytesinkutil.h" +#include "charstr.h" +#include "cmemory.h" +#include "cstring.h" +#include "putilimp.h" +#include "ulocimp.h" +#include "uresimp.h" +#include "ureslocs.h" +#include "ustr_imp.h" + +// C++ API ----------------------------------------------------------------- *** + +U_NAMESPACE_BEGIN + +UnicodeString& +Locale::getDisplayLanguage(UnicodeString& dispLang) const +{ + return this->getDisplayLanguage(getDefault(), dispLang); +} + +/*We cannot make any assumptions on the size of the output display strings +* Yet, since we are calling through to a C API, we need to set limits on +* buffer size. For all the following getDisplay functions we first attempt +* to fill up a stack allocated buffer. If it is to small we heap allocated +* the exact buffer we need copy it to the UnicodeString and delete it*/ + +UnicodeString& +Locale::getDisplayLanguage(const Locale &displayLocale, + UnicodeString &result) const { + UChar *buffer; + UErrorCode errorCode=U_ZERO_ERROR; + int32_t length; + + buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY); + if(buffer==0) { + result.truncate(0); + return result; + } + + length=uloc_getDisplayLanguage(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + + if(errorCode==U_BUFFER_OVERFLOW_ERROR) { + buffer=result.getBuffer(length); + if(buffer==0) { + result.truncate(0); + return result; + } + errorCode=U_ZERO_ERROR; + length=uloc_getDisplayLanguage(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + } + + return result; +} + +UnicodeString& +Locale::getDisplayScript(UnicodeString& dispScript) const +{ + return this->getDisplayScript(getDefault(), dispScript); +} + +UnicodeString& +Locale::getDisplayScript(const Locale &displayLocale, + UnicodeString &result) const { + UChar *buffer; + UErrorCode errorCode=U_ZERO_ERROR; + int32_t length; + + buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY); + if(buffer==0) { + result.truncate(0); + return result; + } + + length=uloc_getDisplayScript(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + + if(errorCode==U_BUFFER_OVERFLOW_ERROR) { + buffer=result.getBuffer(length); + if(buffer==0) { + result.truncate(0); + return result; + } + errorCode=U_ZERO_ERROR; + length=uloc_getDisplayScript(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + } + + return result; +} + +UnicodeString& +Locale::getDisplayCountry(UnicodeString& dispCntry) const +{ + return this->getDisplayCountry(getDefault(), dispCntry); +} + +UnicodeString& +Locale::getDisplayCountry(const Locale &displayLocale, + UnicodeString &result) const { + UChar *buffer; + UErrorCode errorCode=U_ZERO_ERROR; + int32_t length; + + buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY); + if(buffer==0) { + result.truncate(0); + return result; + } + + length=uloc_getDisplayCountry(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + + if(errorCode==U_BUFFER_OVERFLOW_ERROR) { + buffer=result.getBuffer(length); + if(buffer==0) { + result.truncate(0); + return result; + } + errorCode=U_ZERO_ERROR; + length=uloc_getDisplayCountry(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + } + + return result; +} + +UnicodeString& +Locale::getDisplayVariant(UnicodeString& dispVar) const +{ + return this->getDisplayVariant(getDefault(), dispVar); +} + +UnicodeString& +Locale::getDisplayVariant(const Locale &displayLocale, + UnicodeString &result) const { + UChar *buffer; + UErrorCode errorCode=U_ZERO_ERROR; + int32_t length; + + buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY); + if(buffer==0) { + result.truncate(0); + return result; + } + + length=uloc_getDisplayVariant(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + + if(errorCode==U_BUFFER_OVERFLOW_ERROR) { + buffer=result.getBuffer(length); + if(buffer==0) { + result.truncate(0); + return result; + } + errorCode=U_ZERO_ERROR; + length=uloc_getDisplayVariant(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + } + + return result; +} + +UnicodeString& +Locale::getDisplayName( UnicodeString& name ) const +{ + return this->getDisplayName(getDefault(), name); +} + +UnicodeString& +Locale::getDisplayName(const Locale &displayLocale, + UnicodeString &result) const { + UChar *buffer; + UErrorCode errorCode=U_ZERO_ERROR; + int32_t length; + + buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY); + if(buffer==0) { + result.truncate(0); + return result; + } + + length=uloc_getDisplayName(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + + if(errorCode==U_BUFFER_OVERFLOW_ERROR) { + buffer=result.getBuffer(length); + if(buffer==0) { + result.truncate(0); + return result; + } + errorCode=U_ZERO_ERROR; + length=uloc_getDisplayName(fullName, displayLocale.fullName, + buffer, result.getCapacity(), + &errorCode); + result.releaseBuffer(U_SUCCESS(errorCode) ? length : 0); + } + + return result; +} + +#if ! UCONFIG_NO_BREAK_ITERATION + +// ------------------------------------- +// Gets the objectLocale display name in the default locale language. +UnicodeString& U_EXPORT2 +BreakIterator::getDisplayName(const Locale& objectLocale, + UnicodeString& name) +{ + return objectLocale.getDisplayName(name); +} + +// ------------------------------------- +// Gets the objectLocale display name in the displayLocale language. +UnicodeString& U_EXPORT2 +BreakIterator::getDisplayName(const Locale& objectLocale, + const Locale& displayLocale, + UnicodeString& name) +{ + return objectLocale.getDisplayName(displayLocale, name); +} + +#endif + + +U_NAMESPACE_END + +// C API ------------------------------------------------------------------- *** + +U_NAMESPACE_USE + +/* ### Constants **************************************************/ + +/* These strings describe the resources we attempt to load from + the locale ResourceBundle data file.*/ +static const char _kLanguages[] = "Languages"; +static const char _kScripts[] = "Scripts"; +static const char _kScriptsStandAlone[] = "Scripts%stand-alone"; +static const char _kCountries[] = "Countries"; +static const char _kVariants[] = "Variants"; +static const char _kKeys[] = "Keys"; +static const char _kTypes[] = "Types"; +//static const char _kRootName[] = "root"; +static const char _kCurrency[] = "currency"; +static const char _kCurrencies[] = "Currencies"; +static const char _kLocaleDisplayPattern[] = "localeDisplayPattern"; +static const char _kPattern[] = "pattern"; +static const char _kSeparator[] = "separator"; + +/* ### Display name **************************************************/ + +static int32_t +_getStringOrCopyKey(const char *path, const char *locale, + const char *tableKey, + const char* subTableKey, + const char *itemKey, + const char *substitute, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) { + const UChar *s = NULL; + int32_t length = 0; + + if(itemKey==NULL) { + /* top-level item: normal resource bundle access */ + icu::LocalUResourceBundlePointer rb(ures_open(path, locale, pErrorCode)); + + if(U_SUCCESS(*pErrorCode)) { + s=ures_getStringByKey(rb.getAlias(), tableKey, &length, pErrorCode); + /* see comment about closing rb near "return item;" in _res_getTableStringWithFallback() */ + } + } else { + /* Language code should not be a number. If it is, set the error code. */ + if (!uprv_strncmp(tableKey, "Languages", 9) && uprv_strtol(itemKey, NULL, 10)) { + *pErrorCode = U_MISSING_RESOURCE_ERROR; + } else { + /* second-level item, use special fallback */ + s=uloc_getTableStringWithFallback(path, locale, + tableKey, + subTableKey, + itemKey, + &length, + pErrorCode); + } + } + + if(U_SUCCESS(*pErrorCode)) { + int32_t copyLength=uprv_min(length, destCapacity); + if(copyLength>0 && s != NULL) { + u_memcpy(dest, s, copyLength); + } + } else { + /* no string from a resource bundle: convert the substitute */ + length=(int32_t)uprv_strlen(substitute); + u_charsToUChars(substitute, dest, uprv_min(length, destCapacity)); + *pErrorCode=U_USING_DEFAULT_WARNING; + } + + return u_terminateUChars(dest, destCapacity, length, pErrorCode); +} + +typedef int32_t U_CALLCONV UDisplayNameGetter(const char *, char *, int32_t, UErrorCode *); + +static int32_t +_getDisplayNameForComponent(const char *locale, + const char *displayLocale, + UChar *dest, int32_t destCapacity, + UDisplayNameGetter *getter, + const char *tag, + UErrorCode *pErrorCode) { + char localeBuffer[ULOC_FULLNAME_CAPACITY*4]; + int32_t length; + UErrorCode localStatus; + const char* root = NULL; + + /* argument checking */ + if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { + return 0; + } + + if(destCapacity<0 || (destCapacity>0 && dest==NULL)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + localStatus = U_ZERO_ERROR; + length=(*getter)(locale, localeBuffer, sizeof(localeBuffer), &localStatus); + if(U_FAILURE(localStatus) || localStatus==U_STRING_NOT_TERMINATED_WARNING) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + if(length==0) { + // For the display name, we treat this as unknown language (ICU-20273). + if (getter == uloc_getLanguage) { + uprv_strcpy(localeBuffer, "und"); + } else { + return u_terminateUChars(dest, destCapacity, 0, pErrorCode); + } + } + + root = tag == _kCountries ? U_ICUDATA_REGION : U_ICUDATA_LANG; + + return _getStringOrCopyKey(root, displayLocale, + tag, NULL, localeBuffer, + localeBuffer, + dest, destCapacity, + pErrorCode); +} + +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayLanguage(const char *locale, + const char *displayLocale, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) { + return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getLanguage, _kLanguages, pErrorCode); +} + +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayScript(const char* locale, + const char* displayLocale, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) +{ + UErrorCode err = U_ZERO_ERROR; + int32_t res = _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getScript, _kScriptsStandAlone, &err); + + if (destCapacity == 0 && err == U_BUFFER_OVERFLOW_ERROR) { + // For preflight, return the max of the value and the fallback. + int32_t fallback_res = _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getScript, _kScripts, pErrorCode); + return (fallback_res > res) ? fallback_res : res; + } + if ( err == U_USING_DEFAULT_WARNING ) { + return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getScript, _kScripts, pErrorCode); + } else { + *pErrorCode = err; + return res; + } +} + +static int32_t +uloc_getDisplayScriptInContext(const char* locale, + const char* displayLocale, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) +{ + return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getScript, _kScripts, pErrorCode); +} + +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayCountry(const char *locale, + const char *displayLocale, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) { + return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getCountry, _kCountries, pErrorCode); +} + +/* + * TODO separate variant1_variant2_variant3... + * by getting each tag's display string and concatenating them with ", " + * in between - similar to uloc_getDisplayName() + */ +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayVariant(const char *locale, + const char *displayLocale, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) { + return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity, + uloc_getVariant, _kVariants, pErrorCode); +} + +/* Instead of having a separate pass for 'special' patterns, reintegrate the two + * so we don't get bitten by preflight bugs again. We can be reasonably efficient + * without two separate code paths, this code isn't that performance-critical. + * + * This code is general enough to deal with patterns that have a prefix or swap the + * language and remainder components, since we gave developers enough rope to do such + * things if they futz with the pattern data. But since we don't give them a way to + * specify a pattern for arbitrary combinations of components, there's not much use in + * that. I don't think our data includes such patterns, the only variable I know if is + * whether there is a space before the open paren, or not. Oh, and zh uses different + * chars than the standard open/close paren (which ja and ko use, btw). + */ +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayName(const char *locale, + const char *displayLocale, + UChar *dest, int32_t destCapacity, + UErrorCode *pErrorCode) +{ + static const UChar defaultSeparator[9] = { 0x007b, 0x0030, 0x007d, 0x002c, 0x0020, 0x007b, 0x0031, 0x007d, 0x0000 }; /* "{0}, {1}" */ + static const UChar sub0[4] = { 0x007b, 0x0030, 0x007d , 0x0000 } ; /* {0} */ + static const UChar sub1[4] = { 0x007b, 0x0031, 0x007d , 0x0000 } ; /* {1} */ + static const int32_t subLen = 3; + static const UChar defaultPattern[10] = { + 0x007b, 0x0030, 0x007d, 0x0020, 0x0028, 0x007b, 0x0031, 0x007d, 0x0029, 0x0000 + }; /* {0} ({1}) */ + static const int32_t defaultPatLen = 9; + static const int32_t defaultSub0Pos = 0; + static const int32_t defaultSub1Pos = 5; + + int32_t length; /* of formatted result */ + + const UChar *separator; + int32_t sepLen = 0; + const UChar *pattern; + int32_t patLen = 0; + int32_t sub0Pos, sub1Pos; + + UChar formatOpenParen = 0x0028; // ( + UChar formatReplaceOpenParen = 0x005B; // [ + UChar formatCloseParen = 0x0029; // ) + UChar formatReplaceCloseParen = 0x005D; // ] + + UBool haveLang = TRUE; /* assume true, set false if we find we don't have + a lang component in the locale */ + UBool haveRest = TRUE; /* assume true, set false if we find we don't have + any other component in the locale */ + UBool retry = FALSE; /* set true if we need to retry, see below */ + + int32_t langi = 0; /* index of the language substitution (0 or 1), virtually always 0 */ + + if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { + return 0; + } + + if(destCapacity<0 || (destCapacity>0 && dest==NULL)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + { + UErrorCode status = U_ZERO_ERROR; + + icu::LocalUResourceBundlePointer locbundle( + ures_open(U_ICUDATA_LANG, displayLocale, &status)); + icu::LocalUResourceBundlePointer dspbundle( + ures_getByKeyWithFallback(locbundle.getAlias(), _kLocaleDisplayPattern, NULL, &status)); + + separator=ures_getStringByKeyWithFallback(dspbundle.getAlias(), _kSeparator, &sepLen, &status); + pattern=ures_getStringByKeyWithFallback(dspbundle.getAlias(), _kPattern, &patLen, &status); + } + + /* If we couldn't find any data, then use the defaults */ + if(sepLen == 0) { + separator = defaultSeparator; + } + /* #10244: Even though separator is now a pattern, it is awkward to handle it as such + * here since we are trying to build the display string in place in the dest buffer, + * and to handle it as a pattern would entail having separate storage for the + * substrings that need to be combined (the first of which may be the result of + * previous such combinations). So for now we continue to treat the portion between + * {0} and {1} as a string to be appended when joining substrings, ignoring anything + * that is before {0} or after {1} (no existing separator pattern has any such thing). + * This is similar to how pattern is handled below. + */ + { + UChar *p0=u_strstr(separator, sub0); + UChar *p1=u_strstr(separator, sub1); + if (p0==NULL || p1==NULL || p1<p0) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + separator = (const UChar *)p0 + subLen; + sepLen = static_cast<int32_t>(p1 - separator); + } + + if(patLen==0 || (patLen==defaultPatLen && !u_strncmp(pattern, defaultPattern, patLen))) { + pattern=defaultPattern; + patLen=defaultPatLen; + sub0Pos=defaultSub0Pos; + sub1Pos=defaultSub1Pos; + // use default formatOpenParen etc. set above + } else { /* non-default pattern */ + UChar *p0=u_strstr(pattern, sub0); + UChar *p1=u_strstr(pattern, sub1); + if (p0==NULL || p1==NULL) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + sub0Pos = static_cast<int32_t>(p0-pattern); + sub1Pos = static_cast<int32_t>(p1-pattern); + if (sub1Pos < sub0Pos) { /* a very odd pattern */ + int32_t t=sub0Pos; sub0Pos=sub1Pos; sub1Pos=t; + langi=1; + } + if (u_strchr(pattern, 0xFF08) != NULL) { + formatOpenParen = 0xFF08; // fullwidth ( + formatReplaceOpenParen = 0xFF3B; // fullwidth [ + formatCloseParen = 0xFF09; // fullwidth ) + formatReplaceCloseParen = 0xFF3D; // fullwidth ] + } + } + + /* We loop here because there is one case in which after the first pass we could need to + * reextract the data. If there's initial padding before the first element, we put in + * the padding and then write that element. If it turns out there's no second element, + * we didn't need the padding. If we do need the data (no preflight), and the first element + * would have fit but for the padding, we need to reextract. In this case (only) we + * adjust the parameters so padding is not added, and repeat. + */ + do { + UChar* p=dest; + int32_t patPos=0; /* position in the pattern, used for non-substitution portions */ + int32_t langLen=0; /* length of language substitution */ + int32_t langPos=0; /* position in output of language substitution */ + int32_t restLen=0; /* length of 'everything else' substitution */ + int32_t restPos=0; /* position in output of 'everything else' substitution */ + icu::LocalUEnumerationPointer kenum; /* keyword enumeration */ + + /* prefix of pattern, extremely likely to be empty */ + if(sub0Pos) { + if(destCapacity >= sub0Pos) { + while (patPos < sub0Pos) { + *p++ = pattern[patPos++]; + } + } else { + patPos=sub0Pos; + } + length=sub0Pos; + } else { + length=0; + } + + for(int32_t subi=0,resti=0;subi<2;) { /* iterate through patterns 0 and 1*/ + UBool subdone = FALSE; /* set true when ready to move to next substitution */ + + /* prep p and cap for calls to get display components, pin cap to 0 since + they complain if cap is negative */ + int32_t cap=destCapacity-length; + if (cap <= 0) { + cap=0; + } else { + p=dest+length; + } + + if (subi == langi) { /* {0}*/ + if(haveLang) { + langPos=length; + langLen=uloc_getDisplayLanguage(locale, displayLocale, p, cap, pErrorCode); + length+=langLen; + haveLang=langLen>0; + } + subdone=TRUE; + } else { /* {1} */ + if(!haveRest) { + subdone=TRUE; + } else { + int32_t len; /* length of component (plus other stuff) we just fetched */ + switch(resti++) { + case 0: + restPos=length; + len=uloc_getDisplayScriptInContext(locale, displayLocale, p, cap, pErrorCode); + break; + case 1: + len=uloc_getDisplayCountry(locale, displayLocale, p, cap, pErrorCode); + break; + case 2: + len=uloc_getDisplayVariant(locale, displayLocale, p, cap, pErrorCode); + break; + case 3: + kenum.adoptInstead(uloc_openKeywords(locale, pErrorCode)); + U_FALLTHROUGH; + default: { + const char* kw=uenum_next(kenum.getAlias(), &len, pErrorCode); + if (kw == NULL) { + len=0; /* mark that we didn't add a component */ + subdone=TRUE; + } else { + /* incorporating this behavior into the loop made it even more complex, + so just special case it here */ + len = uloc_getDisplayKeyword(kw, displayLocale, p, cap, pErrorCode); + if(len) { + if(len < cap) { + p[len]=0x3d; /* '=', assume we'll need it */ + } + len+=1; + + /* adjust for call to get keyword */ + cap-=len; + if(cap <= 0) { + cap=0; + } else { + p+=len; + } + } + /* reset for call below */ + if(*pErrorCode == U_BUFFER_OVERFLOW_ERROR) { + *pErrorCode=U_ZERO_ERROR; + } + int32_t vlen = uloc_getDisplayKeywordValue(locale, kw, displayLocale, + p, cap, pErrorCode); + if(len) { + if(vlen==0) { + --len; /* remove unneeded '=' */ + } + /* restore cap and p to what they were at start */ + cap=destCapacity-length; + if(cap <= 0) { + cap=0; + } else { + p=dest+length; + } + } + len+=vlen; /* total we added for key + '=' + value */ + } + } break; + } /* end switch */ + + if (len>0) { + /* we addeed a component, so add separator and write it if there's room. */ + if(len+sepLen<=cap) { + const UChar * plimit = p + len; + for (; p < plimit; p++) { + if (*p == formatOpenParen) { + *p = formatReplaceOpenParen; + } else if (*p == formatCloseParen) { + *p = formatReplaceCloseParen; + } + } + for(int32_t i=0;i<sepLen;++i) { + *p++=separator[i]; + } + } + length+=len+sepLen; + } else if(subdone) { + /* remove separator if we added it */ + if (length!=restPos) { + length-=sepLen; + } + restLen=length-restPos; + haveRest=restLen>0; + } + } + } + + if(*pErrorCode == U_BUFFER_OVERFLOW_ERROR) { + *pErrorCode=U_ZERO_ERROR; + } + + if(subdone) { + if(haveLang && haveRest) { + /* append internal portion of pattern, the first time, + or last portion of pattern the second time */ + int32_t padLen; + patPos+=subLen; + padLen=(subi==0 ? sub1Pos : patLen)-patPos; + if(length+padLen <= destCapacity) { + p=dest+length; + for(int32_t i=0;i<padLen;++i) { + *p++=pattern[patPos++]; + } + } else { + patPos+=padLen; + } + length+=padLen; + } else if(subi==0) { + /* don't have first component, reset for second component */ + sub0Pos=0; + length=0; + } else if(length>0) { + /* true length is the length of just the component we got. */ + length=haveLang?langLen:restLen; + if(dest && sub0Pos!=0) { + if (sub0Pos+length<=destCapacity) { + /* first component not at start of result, + but we have full component in buffer. */ + u_memmove(dest, dest+(haveLang?langPos:restPos), length); + } else { + /* would have fit, but didn't because of pattern prefix. */ + sub0Pos=0; /* stops initial padding (and a second retry, + so we won't end up here again) */ + retry=TRUE; + } + } + } + + ++subi; /* move on to next substitution */ + } + } + } while(retry); + + return u_terminateUChars(dest, destCapacity, length, pErrorCode); +} + +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayKeyword(const char* keyword, + const char* displayLocale, + UChar* dest, + int32_t destCapacity, + UErrorCode* status){ + + /* argument checking */ + if(status==NULL || U_FAILURE(*status)) { + return 0; + } + + if(destCapacity<0 || (destCapacity>0 && dest==NULL)) { + *status=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + + /* pass itemKey=NULL to look for a top-level item */ + return _getStringOrCopyKey(U_ICUDATA_LANG, displayLocale, + _kKeys, NULL, + keyword, + keyword, + dest, destCapacity, + status); + +} + + +#define UCURRENCY_DISPLAY_NAME_INDEX 1 + +U_CAPI int32_t U_EXPORT2 +uloc_getDisplayKeywordValue( const char* locale, + const char* keyword, + const char* displayLocale, + UChar* dest, + int32_t destCapacity, + UErrorCode* status){ + + + /* argument checking */ + if(status==NULL || U_FAILURE(*status)) { + return 0; + } + + if(destCapacity<0 || (destCapacity>0 && dest==NULL)) { + *status=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + /* get the keyword value */ + CharString keywordValue; + { + CharStringByteSink sink(&keywordValue); + ulocimp_getKeywordValue(locale, keyword, sink, status); + } + + /* + * if the keyword is equal to currency .. then to get the display name + * we need to do the fallback ourselves + */ + if(uprv_stricmp(keyword, _kCurrency)==0){ + + int32_t dispNameLen = 0; + const UChar *dispName = NULL; + + icu::LocalUResourceBundlePointer bundle( + ures_open(U_ICUDATA_CURR, displayLocale, status)); + icu::LocalUResourceBundlePointer currencies( + ures_getByKey(bundle.getAlias(), _kCurrencies, NULL, status)); + icu::LocalUResourceBundlePointer currency( + ures_getByKeyWithFallback(currencies.getAlias(), keywordValue.data(), NULL, status)); + + dispName = ures_getStringByIndex(currency.getAlias(), UCURRENCY_DISPLAY_NAME_INDEX, &dispNameLen, status); + + if(U_FAILURE(*status)){ + if(*status == U_MISSING_RESOURCE_ERROR){ + /* we just want to write the value over if nothing is available */ + *status = U_USING_DEFAULT_WARNING; + }else{ + return 0; + } + } + + /* now copy the dispName over if not NULL */ + if(dispName != NULL){ + if(dispNameLen <= destCapacity){ + u_memcpy(dest, dispName, dispNameLen); + return u_terminateUChars(dest, destCapacity, dispNameLen, status); + }else{ + *status = U_BUFFER_OVERFLOW_ERROR; + return dispNameLen; + } + }else{ + /* we have not found the display name for the value .. just copy over */ + if(keywordValue.length() <= destCapacity){ + u_charsToUChars(keywordValue.data(), dest, keywordValue.length()); + return u_terminateUChars(dest, destCapacity, keywordValue.length(), status); + }else{ + *status = U_BUFFER_OVERFLOW_ERROR; + return keywordValue.length(); + } + } + + + }else{ + + return _getStringOrCopyKey(U_ICUDATA_LANG, displayLocale, + _kTypes, keyword, + keywordValue.data(), + keywordValue.data(), + dest, destCapacity, + status); + } +} |