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2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
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21
22
23
24 #include "rtl/textcvt.h"
25 #include <tools/debug.hxx>
26
27 namespace { // anonymous namespace
28
29 // ====================================================================
30
31 #define MAX_CVT_SELECT 6
32
33 class ConverterCache
34 {
35 public:
36 explicit ConverterCache( void );
37 ~ConverterCache( void );
38 sal_uInt16 convertOne( int nSelect, sal_Unicode );
39 void convertStr( int nSelect, const sal_Unicode* pSrc, sal_uInt16* pDst, int nCount );
40 protected:
41 void ensureConverter( int nSelect );
42 private:
43 rtl_UnicodeToTextConverter maConverterCache[ MAX_CVT_SELECT+1 ];
44 rtl_UnicodeToTextContext maContexts[ MAX_CVT_SELECT+1 ];
45 };
46
47 // ====================================================================
48
ConverterCache(void)49 ConverterCache::ConverterCache( void)
50 {
51 for( int i = 0; i <= MAX_CVT_SELECT; ++i)
52 {
53 maConverterCache[i] = NULL;
54 maContexts[i] = NULL;
55 }
56 }
57
58 // --------------------------------------------------------------------
59
~ConverterCache(void)60 ConverterCache::~ConverterCache( void)
61 {
62 for( int i = 0; i <= MAX_CVT_SELECT; ++i)
63 {
64 if( !maContexts[i] )
65 continue;
66 rtl_destroyUnicodeToTextContext( maConverterCache[i], maContexts[i] );
67 rtl_destroyUnicodeToTextConverter( maConverterCache[i] );
68 }
69 }
70
71 // --------------------------------------------------------------------
72
ensureConverter(int nSelect)73 void ConverterCache::ensureConverter( int nSelect )
74 {
75 // DBG_ASSERT( (2<=nSelect) && (nSelect<=MAX_CVT_SELECT)), "invalid XLAT.Converter requested" );
76 rtl_UnicodeToTextContext aContext = maContexts[ nSelect ];
77 if( !aContext )
78 {
79 rtl_TextEncoding eRecodeFrom = RTL_TEXTENCODING_UNICODE;
80 switch( nSelect )
81 {
82 default: nSelect = 1; // fall through to unicode recoding
83 case 1: eRecodeFrom = RTL_TEXTENCODING_UNICODE; break;
84 case 2: eRecodeFrom = RTL_TEXTENCODING_SHIFT_JIS; break;
85 case 3: eRecodeFrom = RTL_TEXTENCODING_GB_2312; break;
86 case 4: eRecodeFrom = RTL_TEXTENCODING_BIG5; break;
87 case 5: eRecodeFrom = RTL_TEXTENCODING_MS_949; break;
88 case 6: eRecodeFrom = RTL_TEXTENCODING_MS_1361; break;
89 }
90 rtl_UnicodeToTextConverter aRecodeConverter = rtl_createUnicodeToTextConverter( eRecodeFrom );
91 maConverterCache[ nSelect ] = aRecodeConverter;
92
93 aContext = rtl_createUnicodeToTextContext( aRecodeConverter );
94 maContexts[ nSelect ] = aContext;
95 }
96
97 rtl_resetUnicodeToTextContext( maConverterCache[ nSelect ], aContext );
98 }
99
100 // --------------------------------------------------------------------
101
convertOne(int nSelect,sal_Unicode aChar)102 sal_uInt16 ConverterCache::convertOne( int nSelect, sal_Unicode aChar )
103 {
104 ensureConverter( nSelect );
105
106 sal_Unicode aUCS2Char = aChar;
107 sal_Char aTempArray[8];
108 sal_Size nTempSize;
109 sal_uInt32 nCvtInfo;
110
111 // TODO: use direct unicode->mbcs converter should there ever be one
112 int nCodeLen = rtl_convertUnicodeToText(
113 maConverterCache[ nSelect ], maContexts[ nSelect ],
114 &aUCS2Char, 1, aTempArray, sizeof(aTempArray),
115 RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0
116 | RTL_UNICODETOTEXT_FLAGS_INVALID_0,
117 &nCvtInfo, &nTempSize );
118
119 sal_uInt16 aCode = aTempArray[0];
120 for( int i = 1; i < nCodeLen; ++i )
121 aCode = (aCode << 8) + (aTempArray[i] & 0xFF);
122 return aCode;
123 }
124
125 // --------------------------------------------------------------------
126
convertStr(int nSelect,const sal_Unicode * pSrc,sal_uInt16 * pDst,int nCount)127 void ConverterCache::convertStr( int nSelect, const sal_Unicode* pSrc, sal_uInt16* pDst, int nCount )
128 {
129 ensureConverter( nSelect );
130
131 for( int n = 0; n < nCount; ++n )
132 {
133 sal_Unicode aUCS2Char = pSrc[n];
134
135 sal_Char aTempArray[8];
136 sal_Size nTempSize;
137 sal_uInt32 nCvtInfo;
138
139 // assume that non-unicode-fonts do not support codepoints >U+FFFF
140 // TODO: use direct unicode->mbcs converter should there ever be one
141 int nCodeLen = rtl_convertUnicodeToText(
142 maConverterCache[ nSelect ], maContexts[ nSelect ],
143 &aUCS2Char, 1, aTempArray, sizeof(aTempArray),
144 RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0
145 | RTL_UNICODETOTEXT_FLAGS_INVALID_0,
146 &nCvtInfo, &nTempSize );
147
148 sal_uInt16 aCode = aTempArray[0];
149 for( int i = 1; i < nCodeLen; ++i )
150 aCode = (aCode << 8) + (aTempArray[i] & 0xFF);
151 pDst[n] = aCode;
152 }
153 }
154
155 } // anonymous namespace
156
157 // ====================================================================
158
159 #include "xlat.hxx"
160
161 namespace vcl
162 {
163
164 static ConverterCache aCC;
165
TranslateChar12(sal_uInt16 src)166 sal_uInt16 TranslateChar12(sal_uInt16 src)
167 {
168 return aCC.convertOne( 2, src);
169 }
170
TranslateChar13(sal_uInt16 src)171 sal_uInt16 TranslateChar13(sal_uInt16 src)
172 {
173 return aCC.convertOne( 3, src);
174 }
175
TranslateChar14(sal_uInt16 src)176 sal_uInt16 TranslateChar14(sal_uInt16 src)
177 {
178 return aCC.convertOne( 4, src);
179 }
180
TranslateChar15(sal_uInt16 src)181 sal_uInt16 TranslateChar15(sal_uInt16 src)
182 {
183 return aCC.convertOne( 5, src);
184 }
185
TranslateChar16(sal_uInt16 src)186 sal_uInt16 TranslateChar16(sal_uInt16 src)
187 {
188 return aCC.convertOne( 6, src);
189 }
190
TranslateString12(sal_uInt16 * src,sal_uInt16 * dst,sal_uInt32 n)191 void TranslateString12(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n)
192 {
193 aCC.convertStr( 2, src, dst, n);
194 }
195
TranslateString13(sal_uInt16 * src,sal_uInt16 * dst,sal_uInt32 n)196 void TranslateString13(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n)
197 {
198 aCC.convertStr( 3, src, dst, n);
199 }
200
TranslateString14(sal_uInt16 * src,sal_uInt16 * dst,sal_uInt32 n)201 void TranslateString14(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n)
202 {
203 aCC.convertStr( 4, src, dst, n);
204 }
205
TranslateString15(sal_uInt16 * src,sal_uInt16 * dst,sal_uInt32 n)206 void TranslateString15(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n)
207 {
208 aCC.convertStr( 5, src, dst, n);
209 }
210
TranslateString16(sal_uInt16 * src,sal_uInt16 * dst,sal_uInt32 n)211 void TranslateString16(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n)
212 {
213 aCC.convertStr( 6, src, dst, n);
214 }
215
216 } // namespace vcl
217
218 /* vim: set noet sw=4 ts=4: */
219