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