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Diffstat (limited to 'intl/icu/source/common/uscript.c')
-rw-r--r-- | intl/icu/source/common/uscript.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/intl/icu/source/common/uscript.c b/intl/icu/source/common/uscript.c new file mode 100644 index 000000000..336e18579 --- /dev/null +++ b/intl/icu/source/common/uscript.c @@ -0,0 +1,144 @@ +// Copyright (C) 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +********************************************************************** +* Copyright (C) 1997-2014, International Business Machines +* Corporation and others. All Rights Reserved. +********************************************************************** +* +* File USCRIPT.C +* +* Modification History: +* +* Date Name Description +* 07/06/2001 Ram Creation. +****************************************************************************** +*/ + +#include "unicode/uchar.h" +#include "unicode/uscript.h" +#include "unicode/uloc.h" +#include "cmemory.h" +#include "cstring.h" + +static const UScriptCode JAPANESE[3] = { USCRIPT_KATAKANA, USCRIPT_HIRAGANA, USCRIPT_HAN }; +static const UScriptCode KOREAN[2] = { USCRIPT_HANGUL, USCRIPT_HAN }; +static const UScriptCode HAN_BOPO[2] = { USCRIPT_HAN, USCRIPT_BOPOMOFO }; + +static int32_t +setCodes(const UScriptCode *src, int32_t length, + UScriptCode *dest, int32_t capacity, UErrorCode *err) { + int32_t i; + if(U_FAILURE(*err)) { return 0; } + if(length > capacity) { + *err = U_BUFFER_OVERFLOW_ERROR; + return length; + } + for(i = 0; i < length; ++i) { + dest[i] = src[i]; + } + return length; +} + +static int32_t +setOneCode(UScriptCode script, UScriptCode *scripts, int32_t capacity, UErrorCode *err) { + if(U_FAILURE(*err)) { return 0; } + if(1 > capacity) { + *err = U_BUFFER_OVERFLOW_ERROR; + return 1; + } + scripts[0] = script; + return 1; +} + +static int32_t +getCodesFromLocale(const char *locale, + UScriptCode *scripts, int32_t capacity, UErrorCode *err) { + UErrorCode internalErrorCode = U_ZERO_ERROR; + char lang[8]; + char script[8]; + int32_t scriptLength; + if(U_FAILURE(*err)) { return 0; } + // Multi-script languages, equivalent to the LocaleScript data + // that we used to load from locale resource bundles. + /*length = */ uloc_getLanguage(locale, lang, UPRV_LENGTHOF(lang), &internalErrorCode); + if(U_FAILURE(internalErrorCode) || internalErrorCode == U_STRING_NOT_TERMINATED_WARNING) { + return 0; + } + if(0 == uprv_strcmp(lang, "ja")) { + return setCodes(JAPANESE, UPRV_LENGTHOF(JAPANESE), scripts, capacity, err); + } + if(0 == uprv_strcmp(lang, "ko")) { + return setCodes(KOREAN, UPRV_LENGTHOF(KOREAN), scripts, capacity, err); + } + scriptLength = uloc_getScript(locale, script, UPRV_LENGTHOF(script), &internalErrorCode); + if(U_FAILURE(internalErrorCode) || internalErrorCode == U_STRING_NOT_TERMINATED_WARNING) { + return 0; + } + if(0 == uprv_strcmp(lang, "zh") && 0 == uprv_strcmp(script, "Hant")) { + return setCodes(HAN_BOPO, UPRV_LENGTHOF(HAN_BOPO), scripts, capacity, err); + } + // Explicit script code. + if(scriptLength != 0) { + UScriptCode scriptCode = (UScriptCode)u_getPropertyValueEnum(UCHAR_SCRIPT, script); + if(scriptCode != USCRIPT_INVALID_CODE) { + if(scriptCode == USCRIPT_SIMPLIFIED_HAN || scriptCode == USCRIPT_TRADITIONAL_HAN) { + scriptCode = USCRIPT_HAN; + } + return setOneCode(scriptCode, scripts, capacity, err); + } + } + return 0; +} + +/* TODO: this is a bad API and should be deprecated, ticket #11141 */ +U_CAPI int32_t U_EXPORT2 +uscript_getCode(const char* nameOrAbbrOrLocale, + UScriptCode* fillIn, + int32_t capacity, + UErrorCode* err){ + UBool triedCode; + char likely[ULOC_FULLNAME_CAPACITY]; + UErrorCode internalErrorCode; + int32_t length; + + if(U_FAILURE(*err)) { + return 0; + } + if(nameOrAbbrOrLocale==NULL || + (fillIn == NULL ? capacity != 0 : capacity < 0)) { + *err = U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + triedCode = FALSE; + if(uprv_strchr(nameOrAbbrOrLocale, '-')==NULL && uprv_strchr(nameOrAbbrOrLocale, '_')==NULL ){ + /* try long and abbreviated script names first */ + UScriptCode code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale); + if(code!=USCRIPT_INVALID_CODE) { + return setOneCode(code, fillIn, capacity, err); + } + triedCode = TRUE; + } + internalErrorCode = U_ZERO_ERROR; + length = getCodesFromLocale(nameOrAbbrOrLocale, fillIn, capacity, err); + if(U_FAILURE(*err) || length != 0) { + return length; + } + (void)uloc_addLikelySubtags(nameOrAbbrOrLocale, + likely, UPRV_LENGTHOF(likely), &internalErrorCode); + if(U_SUCCESS(internalErrorCode) && internalErrorCode != U_STRING_NOT_TERMINATED_WARNING) { + length = getCodesFromLocale(likely, fillIn, capacity, err); + if(U_FAILURE(*err) || length != 0) { + return length; + } + } + if(!triedCode) { + /* still not found .. try long and abbreviated script names again */ + UScriptCode code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale); + if(code!=USCRIPT_INVALID_CODE) { + return setOneCode(code, fillIn, capacity, err); + } + } + return 0; +} |