1 // 2016 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 /* 4 ********************************************************************** 5 * Copyright (C) 1997-2014, International Business Machines 6 * Corporation and others. All Rights Reserved. 7 ********************************************************************** 8 * 9 * File USCRIPT.C 10 * 11 * Modification History: 12 * 13 * Date Name Description 14 * 07/06/2001 Ram Creation. 15 ****************************************************************************** 16 */ 17 18 #include "unicode/uchar.h" 19 #include "unicode/uscript.h" 20 #include "unicode/uloc.h" 21 #include "cmemory.h" 22 #include "cstring.h" 23 24 static const UScriptCode JAPANESE[3] = { USCRIPT_KATAKANA, USCRIPT_HIRAGANA, USCRIPT_HAN }; 25 static const UScriptCode KOREAN[2] = { USCRIPT_HANGUL, USCRIPT_HAN }; 26 static const UScriptCode HAN_BOPO[2] = { USCRIPT_HAN, USCRIPT_BOPOMOFO }; 27 28 static int32_t 29 setCodes(const UScriptCode *src, int32_t length, 30 UScriptCode *dest, int32_t capacity, UErrorCode *err) { 31 int32_t i; 32 if(U_FAILURE(*err)) { return 0; } 33 if(length > capacity) { 34 *err = U_BUFFER_OVERFLOW_ERROR; 35 return length; 36 } 37 for(i = 0; i < length; ++i) { 38 dest[i] = src[i]; 39 } 40 return length; 41 } 42 43 static int32_t 44 setOneCode(UScriptCode script, UScriptCode *scripts, int32_t capacity, UErrorCode *err) { 45 if(U_FAILURE(*err)) { return 0; } 46 if(1 > capacity) { 47 *err = U_BUFFER_OVERFLOW_ERROR; 48 return 1; 49 } 50 scripts[0] = script; 51 return 1; 52 } 53 54 static int32_t 55 getCodesFromLocale(const char *locale, 56 UScriptCode *scripts, int32_t capacity, UErrorCode *err) { 57 UErrorCode internalErrorCode = U_ZERO_ERROR; 58 char lang[8]; 59 char script[8]; 60 int32_t scriptLength; 61 if(U_FAILURE(*err)) { return 0; } 62 // Multi-script languages, equivalent to the LocaleScript data 63 // that we used to load from locale resource bundles. 64 /*length = */ uloc_getLanguage(locale, lang, UPRV_LENGTHOF(lang), &internalErrorCode); 65 if(U_FAILURE(internalErrorCode) || internalErrorCode == U_STRING_NOT_TERMINATED_WARNING) { 66 return 0; 67 } 68 if(0 == uprv_strcmp(lang, "ja")) { 69 return setCodes(JAPANESE, UPRV_LENGTHOF(JAPANESE), scripts, capacity, err); 70 } 71 if(0 == uprv_strcmp(lang, "ko")) { 72 return setCodes(KOREAN, UPRV_LENGTHOF(KOREAN), scripts, capacity, err); 73 } 74 scriptLength = uloc_getScript(locale, script, UPRV_LENGTHOF(script), &internalErrorCode); 75 if(U_FAILURE(internalErrorCode) || internalErrorCode == U_STRING_NOT_TERMINATED_WARNING) { 76 return 0; 77 } 78 if(0 == uprv_strcmp(lang, "zh") && 0 == uprv_strcmp(script, "Hant")) { 79 return setCodes(HAN_BOPO, UPRV_LENGTHOF(HAN_BOPO), scripts, capacity, err); 80 } 81 // Explicit script code. 82 if(scriptLength != 0) { 83 UScriptCode scriptCode = (UScriptCode)u_getPropertyValueEnum(UCHAR_SCRIPT, script); 84 if(scriptCode != USCRIPT_INVALID_CODE) { 85 if(scriptCode == USCRIPT_SIMPLIFIED_HAN || scriptCode == USCRIPT_TRADITIONAL_HAN) { 86 scriptCode = USCRIPT_HAN; 87 } 88 return setOneCode(scriptCode, scripts, capacity, err); 89 } 90 } 91 return 0; 92 } 93 94 /* TODO: this is a bad API and should be deprecated, ticket #11141 */ 95 U_CAPI int32_t U_EXPORT2 96 uscript_getCode(const char* nameOrAbbrOrLocale, 97 UScriptCode* fillIn, 98 int32_t capacity, 99 UErrorCode* err){ 100 UBool triedCode; 101 char likely[ULOC_FULLNAME_CAPACITY]; 102 UErrorCode internalErrorCode; 103 int32_t length; 104 105 if(U_FAILURE(*err)) { 106 return 0; 107 } 108 if(nameOrAbbrOrLocale==NULL || 109 (fillIn == NULL ? capacity != 0 : capacity < 0)) { 110 *err = U_ILLEGAL_ARGUMENT_ERROR; 111 return 0; 112 } 113 114 triedCode = FALSE; 115 if(uprv_strchr(nameOrAbbrOrLocale, '-')==NULL && uprv_strchr(nameOrAbbrOrLocale, '_')==NULL ){ 116 /* try long and abbreviated script names first */ 117 UScriptCode code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale); 118 if(code!=USCRIPT_INVALID_CODE) { 119 return setOneCode(code, fillIn, capacity, err); 120 } 121 triedCode = TRUE; 122 } 123 internalErrorCode = U_ZERO_ERROR; 124 length = getCodesFromLocale(nameOrAbbrOrLocale, fillIn, capacity, err); 125 if(U_FAILURE(*err) || length != 0) { 126 return length; 127 } 128 (void)uloc_addLikelySubtags(nameOrAbbrOrLocale, 129 likely, UPRV_LENGTHOF(likely), &internalErrorCode); 130 if(U_SUCCESS(internalErrorCode) && internalErrorCode != U_STRING_NOT_TERMINATED_WARNING) { 131 length = getCodesFromLocale(likely, fillIn, capacity, err); 132 if(U_FAILURE(*err) || length != 0) { 133 return length; 134 } 135 } 136 if(!triedCode) { 137 /* still not found .. try long and abbreviated script names again */ 138 UScriptCode code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale); 139 if(code!=USCRIPT_INVALID_CODE) { 140 return setOneCode(code, fillIn, capacity, err); 141 } 142 } 143 return 0; 144 } 145
