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