1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 *
6 * Copyright (C) 1999-2014, International Business Machines
7 * Corporation and others. All Rights Reserved.
8 *
9 *******************************************************************************
10 * file name: letsutil.cpp
11 *
12 * created on: 04/25/2006
13 * created by: Eric R. Mader
14 */
15
16 #include "unicode/utypes.h"
17 #include "unicode/unistr.h"
18 #include "unicode/ubidi.h"
19
20 #include "layout/LETypes.h"
21 #include "layout/LEScripts.h"
22 #include "layout/LayoutEngine.h"
23 #include "layout/LELanguages.h"
24
25 #ifndef USING_ICULEHB
26 #include "OpenTypeLayoutEngine.h"
27 #endif
28
29 #include "letest.h"
30 #include "letsutil.h"
31
32 U_NAMESPACE_USE
33
getCString(const UnicodeString * uString)34 char *getCString(const UnicodeString *uString)
35 {
36 if (uString == NULL) {
37 return NULL;
38 }
39
40 le_int32 uLength = uString->length();
41 le_int32 cLength = uString->extract(0, uLength, NULL, 0, US_INV);
42 char *cString = NEW_ARRAY(char, cLength + 1);
43
44 uString->extract(0, uLength, cString, cLength, US_INV);
45 cString[cLength] = '\0';
46
47 return cString;
48 }
49
getCString(const LEUnicode16 * uChars)50 char *getCString(const LEUnicode16 *uChars)
51 {
52 if (uChars == NULL) {
53 return NULL;
54 }
55
56 const UnicodeString ustring(uChars);
57
58 return getCString(&ustring);
59 }
60
getUTF8String(const UnicodeString * uString)61 char *getUTF8String(const UnicodeString *uString)
62 {
63 if (uString == NULL) {
64 return NULL;
65 }
66
67 le_int32 uLength = uString->length();
68 le_int32 cLength = uString->extract(0, uLength, NULL, 0, "UTF-8");
69 char *cString = NEW_ARRAY(char, cLength + 1);
70
71 uString->extract(0, uLength, cString, cLength, "UTF-8");
72
73 cString[cLength] = '\0';
74
75 return cString;
76 }
77
freeCString(char * cString)78 void freeCString(char *cString)
79 {
80 DELETE_ARRAY(cString);
81 }
82
getRTL(const UnicodeString & text)83 le_bool getRTL(const UnicodeString &text)
84 {
85 UBiDiLevel level = 0;
86 UErrorCode status = U_ZERO_ERROR;
87 le_int32 charCount = text.length();
88 le_int32 limit = -1;
89 UBiDi *ubidi = ubidi_openSized(charCount, 0, &status);
90
91 ubidi_setPara(ubidi, text.getBuffer(), charCount, UBIDI_DEFAULT_LTR, NULL, &status);
92
93 // TODO: Should check that there's only a single logical run...
94 ubidi_getLogicalRun(ubidi, 0, &limit, &level);
95
96 ubidi_close(ubidi);
97
98 return level & 1;
99 }
100
getLanguageCode(const char * lang)101 le_int32 getLanguageCode(const char *lang)
102 {
103 if (strlen(lang) != 3) {
104 return -1;
105 }
106
107 LETag langTag = (LETag) ((lang[0] << 24) + (lang[1] << 16) + (lang[2] << 8) + 0x20);
108
109 #ifndef USING_ICULEHB
110 for (le_int32 i = 0; i < languageCodeCount; i += 1) {
111 if (langTag == OpenTypeLayoutEngine::languageTags[i]) {
112 return i;
113 }
114 }
115 #else
116 if (!strcmp(lang, "JAN")) return janLanguageCode;
117 if (!strcmp(lang, "KOR")) return korLanguageCode;
118 if (!strcmp(lang, "ZHT")) return zhtLanguageCode;
119 if (!strcmp(lang, "ZHS")) return zhsLanguageCode;
120 if (!strcmp(lang, "HIN")) return hinLanguageCode;
121 if (!strcmp(lang, "MAR")) return marLanguageCode;
122 if (!strcmp(lang, "ROM")) return romLanguageCode;
123 #endif
124
125
126 return -1;
127 }
128
129