143 lines
5.0 KiB
C
143 lines
5.0 KiB
C
/*
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**********************************************************************
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* Copyright (C) 1997-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*
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* File USCRIPT.C
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*
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* Modification History:
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*
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* Date Name Description
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* 07/06/2001 Ram Creation.
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******************************************************************************
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*/
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#include "unicode/uchar.h"
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#include "unicode/uscript.h"
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#include "unicode/uloc.h"
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#include "cmemory.h"
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#include "cstring.h"
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static const UScriptCode JAPANESE[3] = { USCRIPT_KATAKANA, USCRIPT_HIRAGANA, USCRIPT_HAN };
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static const UScriptCode KOREAN[2] = { USCRIPT_HANGUL, USCRIPT_HAN };
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static const UScriptCode HAN_BOPO[2] = { USCRIPT_HAN, USCRIPT_BOPOMOFO };
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static int32_t
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setCodes(const UScriptCode *src, int32_t length,
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UScriptCode *dest, int32_t capacity, UErrorCode *err) {
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int32_t i;
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if(U_FAILURE(*err)) { return 0; }
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if(length > capacity) {
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*err = U_BUFFER_OVERFLOW_ERROR;
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return length;
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}
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for(i = 0; i < length; ++i) {
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dest[i] = src[i];
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}
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return length;
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}
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static int32_t
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setOneCode(UScriptCode script, UScriptCode *scripts, int32_t capacity, UErrorCode *err) {
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if(U_FAILURE(*err)) { return 0; }
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if(1 > capacity) {
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*err = U_BUFFER_OVERFLOW_ERROR;
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return 1;
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}
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scripts[0] = script;
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return 1;
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}
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static int32_t
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getCodesFromLocale(const char *locale,
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UScriptCode *scripts, int32_t capacity, UErrorCode *err) {
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UErrorCode internalErrorCode = U_ZERO_ERROR;
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char lang[8];
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char script[8];
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int32_t scriptLength;
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if(U_FAILURE(*err)) { return 0; }
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// Multi-script languages, equivalent to the LocaleScript data
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// that we used to load from locale resource bundles.
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/*length = */ uloc_getLanguage(locale, lang, UPRV_LENGTHOF(lang), &internalErrorCode);
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if(U_FAILURE(internalErrorCode) || internalErrorCode == U_STRING_NOT_TERMINATED_WARNING) {
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return 0;
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}
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if(0 == uprv_strcmp(lang, "ja")) {
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return setCodes(JAPANESE, UPRV_LENGTHOF(JAPANESE), scripts, capacity, err);
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}
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if(0 == uprv_strcmp(lang, "ko")) {
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return setCodes(KOREAN, UPRV_LENGTHOF(KOREAN), scripts, capacity, err);
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}
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scriptLength = uloc_getScript(locale, script, UPRV_LENGTHOF(script), &internalErrorCode);
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if(U_FAILURE(internalErrorCode) || internalErrorCode == U_STRING_NOT_TERMINATED_WARNING) {
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return 0;
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}
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if(0 == uprv_strcmp(lang, "zh") && 0 == uprv_strcmp(script, "Hant")) {
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return setCodes(HAN_BOPO, UPRV_LENGTHOF(HAN_BOPO), scripts, capacity, err);
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}
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// Explicit script code.
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if(scriptLength != 0) {
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UScriptCode scriptCode = (UScriptCode)u_getPropertyValueEnum(UCHAR_SCRIPT, script);
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if(scriptCode != USCRIPT_INVALID_CODE) {
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if(scriptCode == USCRIPT_SIMPLIFIED_HAN || scriptCode == USCRIPT_TRADITIONAL_HAN) {
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scriptCode = USCRIPT_HAN;
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}
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return setOneCode(scriptCode, scripts, capacity, err);
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}
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}
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return 0;
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}
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/* TODO: this is a bad API and should be deprecated, ticket #11141 */
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U_CAPI int32_t U_EXPORT2
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uscript_getCode(const char* nameOrAbbrOrLocale,
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UScriptCode* fillIn,
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int32_t capacity,
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UErrorCode* err){
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UBool triedCode;
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char likely[ULOC_FULLNAME_CAPACITY];
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UErrorCode internalErrorCode;
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int32_t length;
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if(U_FAILURE(*err)) {
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return 0;
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}
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if(nameOrAbbrOrLocale==NULL ||
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(fillIn == NULL ? capacity != 0 : capacity < 0)) {
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*err = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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triedCode = FALSE;
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if(uprv_strchr(nameOrAbbrOrLocale, '-')==NULL && uprv_strchr(nameOrAbbrOrLocale, '_')==NULL ){
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/* try long and abbreviated script names first */
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UScriptCode code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
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if(code!=USCRIPT_INVALID_CODE) {
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return setOneCode(code, fillIn, capacity, err);
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}
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triedCode = TRUE;
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}
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internalErrorCode = U_ZERO_ERROR;
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length = getCodesFromLocale(nameOrAbbrOrLocale, fillIn, capacity, err);
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if(U_FAILURE(*err) || length != 0) {
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return length;
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}
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(void)uloc_addLikelySubtags(nameOrAbbrOrLocale,
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likely, UPRV_LENGTHOF(likely), &internalErrorCode);
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if(U_SUCCESS(internalErrorCode) && internalErrorCode != U_STRING_NOT_TERMINATED_WARNING) {
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length = getCodesFromLocale(likely, fillIn, capacity, err);
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if(U_FAILURE(*err) || length != 0) {
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return length;
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}
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}
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if(!triedCode) {
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/* still not found .. try long and abbreviated script names again */
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UScriptCode code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
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if(code!=USCRIPT_INVALID_CODE) {
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return setOneCode(code, fillIn, capacity, err);
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}
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}
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return 0;
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}
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