// © 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 "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 {
char16_t *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if (buffer == nullptr) {
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 == nullptr) {
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 {
char16_t *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if (buffer == nullptr) {
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 == nullptr) {
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 {
char16_t *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if (buffer == nullptr) {
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 == nullptr) {
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 {
char16_t *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if (buffer == nullptr) {
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 == nullptr) {
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 {
char16_t *buffer;
UErrorCode errorCode=U_ZERO_ERROR;
int32_t length;
buffer=result.getBuffer(ULOC_FULLNAME_CAPACITY);
if (buffer == nullptr) {
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 == nullptr) {
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
namespace {
/* ### Constants **************************************************/
/* These strings describe the resources we attempt to load from
the locale ResourceBundle data file.*/
constexpr
char _kLanguages[] =
"Languages";
constexpr
char _kScripts[] =
"Scripts";
constexpr
char _kScriptsStandAlone[] =
"Scripts%stand-alone";
constexpr
char _kCountries[] =
"Countries";
constexpr
char _kVariants[] =
"Variants";
constexpr
char _kKeys[] =
"Keys";
constexpr
char _kTypes[] =
"Types";
//constexpr char _kRootName[] = "root";
constexpr
char _kCurrency[] =
"currency";
constexpr
char _kCurrencies[] =
"Currencies";
constexpr
char _kLocaleDisplayPattern[] =
"localeDisplayPattern";
constexpr
char _kPattern[] =
"pattern";
constexpr
char _kSeparator[] =
"separator";
/* ### Display name **************************************************/
int32_t
_getStringOrCopyKey(
const char *path,
const char *locale,
const char *tableKey,
const char* subTableKey,
const char *itemKey,
const char *substitute,
char16_t *dest, int32_t destCapacity,
UErrorCode &errorCode) {
if (U_FAILURE(errorCode)) {
return 0; }
const char16_t *s = nullptr;
int32_t length = 0;
if(itemKey==nullptr) {
/* top-level item: normal resource bundle access */
icu::LocalUResourceBundlePointer rb(ures_open(path, locale, &errorCode));
if(U_SUCCESS(errorCode)) {
s=ures_getStringByKey(rb.getAlias(), tableKey, &length, &errorCode);
/* see comment about closing rb near "return item;" in _res_getTableStringWithFallback() */
}
}
else {
bool isLanguageCode = (uprv_strncmp(tableKey, _kLanguages, 9) == 0);
/* Language code should not be a number. If it is, set the error code. */
if (isLanguageCode && uprv_strtol(itemKey, nullptr, 10)) {
errorCode = U_MISSING_RESOURCE_ERROR;
}
else {
/* second-level item, use special fallback */
s=uloc_getTableStringWithFallback(path, locale,
tableKey,
subTableKey,
itemKey,
&length,
&errorCode);
if (U_FAILURE(errorCode) && isLanguageCode && itemKey != nullptr) {
// convert itemKey locale code to canonical form and try again, ICU-20870
errorCode = U_ZERO_ERROR;
Locale canonKey = Locale::createCanonical(itemKey);
s=uloc_getTableStringWithFallback(path, locale,
tableKey,
subTableKey,
canonKey.getName(),
&length,
&errorCode);
}
}
}
if(U_SUCCESS(errorCode)) {
int32_t copyLength=uprv_min(length, destCapacity);
if(copyLength>0 && s != nullptr) {
u_memcpy(dest, s, copyLength);
}
}
else {
/* no string from a resource bundle: convert the substitute */
length =
static_cast<int32_t>(uprv_strlen(substitute));
u_charsToUChars(substitute, dest, uprv_min(length, destCapacity));
errorCode = U_USING_DEFAULT_WARNING;
}
return u_terminateUChars(dest, destCapacity, length, &errorCode);
}
using UDisplayNameGetter = icu::CharString(
const char*, UErrorCode&);
int32_t
_getDisplayNameForComponent(
const char *locale,
const char *displayLocale,
char16_t *dest, int32_t destCapacity,
UDisplayNameGetter *getter,
const char *tag,
UErrorCode &errorCode) {
if (U_FAILURE(errorCode)) {
return 0; }
UErrorCode localStatus;
const char* root = nullptr;
if(destCapacity<0 || (destCapacity>0 && dest==nullptr)) {
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
localStatus = U_ZERO_ERROR;
icu::CharString localeBuffer = (*getter)(locale, localStatus);
if (U_FAILURE(localStatus)) {
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
if (localeBuffer.isEmpty()) {
// For the display name, we treat this as unknown language (ICU-20273).
if (getter == ulocimp_getLanguage) {
localeBuffer.append(
"und", errorCode);
}
else {
return u_terminateUChars(dest, destCapacity, 0, &errorCode);
}
}
root = tag == _kCountries ? U_ICUDATA_REGION : U_ICUDATA_LANG;
return _getStringOrCopyKey(root, displayLocale,
tag, nullptr, localeBuffer.data(),
localeBuffer.data(),
dest, destCapacity,
errorCode);
}
}
// namespace
U_CAPI int32_t U_EXPORT2
uloc_getDisplayLanguage(
const char *locale,
const char *displayLocale,
char16_t *dest, int32_t destCapacity,
UErrorCode *pErrorCode) {
return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
ulocimp_getLanguage, _kLanguages, *pErrorCode);
}
U_CAPI int32_t U_EXPORT2
uloc_getDisplayScript(
const char* locale,
const char* displayLocale,
char16_t *dest, int32_t destCapacity,
UErrorCode *pErrorCode)
{
if (U_FAILURE(*pErrorCode)) {
return 0; }
UErrorCode err = U_ZERO_ERROR;
int32_t res = _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
ulocimp_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, destCa
pacity,
ulocimp_getScript, _kScripts, *pErrorCode);
return (fallback_res > res) ? fallback_res : res;
}
if ( err == U_USING_DEFAULT_WARNING ) {
return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
ulocimp_getScript, _kScripts, *pErrorCode);
} else {
*pErrorCode = err;
return res;
}
}
static int32_t
uloc_getDisplayScriptInContext(const char* locale,
const char* displayLocale,
char16_t *dest, int32_t destCapacity,
UErrorCode *pErrorCode)
{
return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
ulocimp_getScript, _kScripts, *pErrorCode);
}
U_CAPI int32_t U_EXPORT2
uloc_getDisplayCountry(const char *locale,
const char *displayLocale,
char16_t *dest, int32_t destCapacity,
UErrorCode *pErrorCode) {
return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
ulocimp_getRegion, _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,
char16_t *dest, int32_t destCapacity,
UErrorCode *pErrorCode) {
return _getDisplayNameForComponent(locale, displayLocale, dest, destCapacity,
ulocimp_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,
char16_t *dest, int32_t destCapacity,
UErrorCode *pErrorCode)
{
static const char16_t defaultSeparator[9] = { 0x007b, 0x0030, 0x007d, 0x002c, 0x0020, 0x007b, 0x0031, 0x007d, 0x0000 }; /* "{0}, {1}" */
static const char16_t sub0[4] = { 0x007b, 0x0030, 0x007d , 0x0000 } ; /* {0} */
static const char16_t sub1[4] = { 0x007b, 0x0031, 0x007d , 0x0000 } ; /* {1} */
static const int32_t subLen = 3;
static const char16_t 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 char16_t *separator;
int32_t sepLen = 0;
const char16_t *pattern;
int32_t patLen = 0;
int32_t sub0Pos, sub1Pos;
char16_t formatOpenParen = 0x0028; // (
char16_t formatReplaceOpenParen = 0x005B; // [
char16_t formatCloseParen = 0x0029; // )
char16_t 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==nullptr || U_FAILURE(*pErrorCode)) {
return 0;
}
if(destCapacity<0 || (destCapacity>0 && dest==nullptr)) {
*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, nullptr, &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.
*/
{
char16_t *p0=u_strstr(separator, sub0);
char16_t *p1=u_strstr(separator, sub1);
if (p0==nullptr || p1==nullptr || p1<p0) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
separator = (const char16_t *)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 */
char16_t *p0=u_strstr(pattern, sub0);
char16_t *p1=u_strstr(pattern, sub1);
if (p0==nullptr || p1==nullptr) {
*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) != nullptr) {
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 {
char16_t* 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 == nullptr) {
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 added a component, so add separator and write it if there's room. */
if(len+sepLen<=cap) {
const char16_t * 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,
char16_t* dest,
int32_t destCapacity,
UErrorCode* status){
/* argument checking */
if(status==nullptr || U_FAILURE(*status)) {
return 0;
}
if(destCapacity<0 || (destCapacity>0 && dest==nullptr)) {
*status=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* pass itemKey=nullptr to look for a top-level item */
return _getStringOrCopyKey(U_ICUDATA_LANG, displayLocale,
_kKeys, nullptr,
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,
char16_t* dest,
int32_t destCapacity,
UErrorCode* status){
/* argument checking */
if(status==nullptr || U_FAILURE(*status)) {
return 0;
}
if(destCapacity<0 || (destCapacity>0 && dest==nullptr)) {
*status=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
/* get the keyword value */
CharString keywordValue;
if (keyword != nullptr && *keyword != '\0') {
keywordValue = ulocimp_getKeywordValue(locale, keyword, *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 char16_t *dispName = nullptr;
icu::LocalUResourceBundlePointer bundle(
ures_open(U_ICUDATA_CURR, displayLocale, status));
icu::LocalUResourceBundlePointer currencies(
ures_getByKey(bundle.getAlias(), _kCurrencies, nullptr, status));
icu::LocalUResourceBundlePointer currency(
ures_getByKeyWithFallback(currencies.getAlias(), keywordValue.data(), nullptr, 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 nullptr */
if(dispName != nullptr){
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);
}
}
