The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* t1cmap.c */ |
| 4 | /* */ |
| 5 | /* Type 1 character map support (body). */ |
| 6 | /* */ |
Xianzhu Wang | e3b631d | 2013-09-03 11:05:38 -0700 | [diff] [blame] | 7 | /* Copyright 2002, 2003, 2006, 2007, 2012 by */ |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 | /* */ |
| 10 | /* This file is part of the FreeType project, and may only be used, */ |
| 11 | /* modified, and distributed under the terms of the FreeType project */ |
| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| 13 | /* this file you indicate that you have read the license and */ |
| 14 | /* understand and accept it fully. */ |
| 15 | /* */ |
| 16 | /***************************************************************************/ |
| 17 | |
| 18 | |
| 19 | #include "t1cmap.h" |
| 20 | |
| 21 | #include FT_INTERNAL_DEBUG_H |
| 22 | |
| 23 | #include "psauxerr.h" |
| 24 | |
| 25 | |
| 26 | /*************************************************************************/ |
| 27 | /*************************************************************************/ |
| 28 | /***** *****/ |
| 29 | /***** TYPE1 STANDARD (AND EXPERT) ENCODING CMAPS *****/ |
| 30 | /***** *****/ |
| 31 | /*************************************************************************/ |
| 32 | /*************************************************************************/ |
| 33 | |
| 34 | static void |
| 35 | t1_cmap_std_init( T1_CMapStd cmap, |
| 36 | FT_Int is_expert ) |
| 37 | { |
| 38 | T1_Face face = (T1_Face)FT_CMAP_FACE( cmap ); |
| 39 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| 40 | |
| 41 | |
| 42 | cmap->num_glyphs = face->type1.num_glyphs; |
| 43 | cmap->glyph_names = (const char* const*)face->type1.glyph_names; |
| 44 | cmap->sid_to_string = psnames->adobe_std_strings; |
| 45 | cmap->code_to_sid = is_expert ? psnames->adobe_expert_encoding |
| 46 | : psnames->adobe_std_encoding; |
| 47 | |
| 48 | FT_ASSERT( cmap->code_to_sid != NULL ); |
| 49 | } |
| 50 | |
| 51 | |
| 52 | FT_CALLBACK_DEF( void ) |
| 53 | t1_cmap_std_done( T1_CMapStd cmap ) |
| 54 | { |
| 55 | cmap->num_glyphs = 0; |
| 56 | cmap->glyph_names = NULL; |
| 57 | cmap->sid_to_string = NULL; |
| 58 | cmap->code_to_sid = NULL; |
| 59 | } |
| 60 | |
| 61 | |
| 62 | FT_CALLBACK_DEF( FT_UInt ) |
| 63 | t1_cmap_std_char_index( T1_CMapStd cmap, |
| 64 | FT_UInt32 char_code ) |
| 65 | { |
| 66 | FT_UInt result = 0; |
| 67 | |
| 68 | |
| 69 | if ( char_code < 256 ) |
| 70 | { |
| 71 | FT_UInt code, n; |
| 72 | const char* glyph_name; |
| 73 | |
| 74 | |
| 75 | /* convert character code to Adobe SID string */ |
| 76 | code = cmap->code_to_sid[char_code]; |
| 77 | glyph_name = cmap->sid_to_string( code ); |
| 78 | |
| 79 | /* look for the corresponding glyph name */ |
| 80 | for ( n = 0; n < cmap->num_glyphs; n++ ) |
| 81 | { |
| 82 | const char* gname = cmap->glyph_names[n]; |
| 83 | |
| 84 | |
| 85 | if ( gname && gname[0] == glyph_name[0] && |
| 86 | ft_strcmp( gname, glyph_name ) == 0 ) |
| 87 | { |
| 88 | result = n; |
| 89 | break; |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | return result; |
| 95 | } |
| 96 | |
| 97 | |
David 'Digit' Turner | 295ffce | 2010-03-03 14:24:57 -0800 | [diff] [blame] | 98 | FT_CALLBACK_DEF( FT_UInt32 ) |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 99 | t1_cmap_std_char_next( T1_CMapStd cmap, |
| 100 | FT_UInt32 *pchar_code ) |
| 101 | { |
| 102 | FT_UInt result = 0; |
| 103 | FT_UInt32 char_code = *pchar_code + 1; |
| 104 | |
| 105 | |
| 106 | while ( char_code < 256 ) |
| 107 | { |
| 108 | result = t1_cmap_std_char_index( cmap, char_code ); |
| 109 | if ( result != 0 ) |
| 110 | goto Exit; |
| 111 | |
| 112 | char_code++; |
| 113 | } |
| 114 | char_code = 0; |
| 115 | |
| 116 | Exit: |
| 117 | *pchar_code = char_code; |
| 118 | return result; |
| 119 | } |
| 120 | |
| 121 | |
| 122 | FT_CALLBACK_DEF( FT_Error ) |
| 123 | t1_cmap_standard_init( T1_CMapStd cmap ) |
| 124 | { |
| 125 | t1_cmap_std_init( cmap, 0 ); |
| 126 | return 0; |
| 127 | } |
| 128 | |
| 129 | |
| 130 | FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| 131 | t1_cmap_standard_class_rec = |
| 132 | { |
| 133 | sizeof ( T1_CMapStdRec ), |
| 134 | |
| 135 | (FT_CMap_InitFunc) t1_cmap_standard_init, |
| 136 | (FT_CMap_DoneFunc) t1_cmap_std_done, |
| 137 | (FT_CMap_CharIndexFunc)t1_cmap_std_char_index, |
| 138 | (FT_CMap_CharNextFunc) t1_cmap_std_char_next, |
| 139 | |
| 140 | NULL, NULL, NULL, NULL, NULL |
| 141 | }; |
| 142 | |
| 143 | |
| 144 | FT_CALLBACK_DEF( FT_Error ) |
| 145 | t1_cmap_expert_init( T1_CMapStd cmap ) |
| 146 | { |
| 147 | t1_cmap_std_init( cmap, 1 ); |
| 148 | return 0; |
| 149 | } |
| 150 | |
| 151 | FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| 152 | t1_cmap_expert_class_rec = |
| 153 | { |
| 154 | sizeof ( T1_CMapStdRec ), |
| 155 | |
| 156 | (FT_CMap_InitFunc) t1_cmap_expert_init, |
| 157 | (FT_CMap_DoneFunc) t1_cmap_std_done, |
| 158 | (FT_CMap_CharIndexFunc)t1_cmap_std_char_index, |
| 159 | (FT_CMap_CharNextFunc) t1_cmap_std_char_next, |
| 160 | |
| 161 | NULL, NULL, NULL, NULL, NULL |
| 162 | }; |
| 163 | |
| 164 | |
| 165 | /*************************************************************************/ |
| 166 | /*************************************************************************/ |
| 167 | /***** *****/ |
| 168 | /***** TYPE1 CUSTOM ENCODING CMAP *****/ |
| 169 | /***** *****/ |
| 170 | /*************************************************************************/ |
| 171 | /*************************************************************************/ |
| 172 | |
| 173 | |
| 174 | FT_CALLBACK_DEF( FT_Error ) |
| 175 | t1_cmap_custom_init( T1_CMapCustom cmap ) |
| 176 | { |
| 177 | T1_Face face = (T1_Face)FT_CMAP_FACE( cmap ); |
| 178 | T1_Encoding encoding = &face->type1.encoding; |
| 179 | |
| 180 | |
| 181 | cmap->first = encoding->code_first; |
David 'Digit' Turner | 295ffce | 2010-03-03 14:24:57 -0800 | [diff] [blame] | 182 | cmap->count = (FT_UInt)( encoding->code_last - cmap->first ); |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 183 | cmap->indices = encoding->char_index; |
| 184 | |
| 185 | FT_ASSERT( cmap->indices != NULL ); |
| 186 | FT_ASSERT( encoding->code_first <= encoding->code_last ); |
| 187 | |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | |
| 192 | FT_CALLBACK_DEF( void ) |
| 193 | t1_cmap_custom_done( T1_CMapCustom cmap ) |
| 194 | { |
| 195 | cmap->indices = NULL; |
| 196 | cmap->first = 0; |
| 197 | cmap->count = 0; |
| 198 | } |
| 199 | |
| 200 | |
| 201 | FT_CALLBACK_DEF( FT_UInt ) |
| 202 | t1_cmap_custom_char_index( T1_CMapCustom cmap, |
| 203 | FT_UInt32 char_code ) |
| 204 | { |
| 205 | FT_UInt result = 0; |
| 206 | |
| 207 | |
| 208 | if ( ( char_code >= cmap->first ) && |
| 209 | ( char_code < ( cmap->first + cmap->count ) ) ) |
| 210 | result = cmap->indices[char_code]; |
| 211 | |
| 212 | return result; |
| 213 | } |
| 214 | |
| 215 | |
David 'Digit' Turner | 295ffce | 2010-03-03 14:24:57 -0800 | [diff] [blame] | 216 | FT_CALLBACK_DEF( FT_UInt32 ) |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 217 | t1_cmap_custom_char_next( T1_CMapCustom cmap, |
| 218 | FT_UInt32 *pchar_code ) |
| 219 | { |
| 220 | FT_UInt result = 0; |
| 221 | FT_UInt32 char_code = *pchar_code; |
| 222 | |
| 223 | |
| 224 | ++char_code; |
| 225 | |
| 226 | if ( char_code < cmap->first ) |
| 227 | char_code = cmap->first; |
| 228 | |
| 229 | for ( ; char_code < ( cmap->first + cmap->count ); char_code++ ) |
| 230 | { |
| 231 | result = cmap->indices[char_code]; |
| 232 | if ( result != 0 ) |
| 233 | goto Exit; |
| 234 | } |
| 235 | |
| 236 | char_code = 0; |
| 237 | |
| 238 | Exit: |
| 239 | *pchar_code = char_code; |
| 240 | return result; |
| 241 | } |
| 242 | |
| 243 | |
| 244 | FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| 245 | t1_cmap_custom_class_rec = |
| 246 | { |
| 247 | sizeof ( T1_CMapCustomRec ), |
| 248 | |
| 249 | (FT_CMap_InitFunc) t1_cmap_custom_init, |
| 250 | (FT_CMap_DoneFunc) t1_cmap_custom_done, |
| 251 | (FT_CMap_CharIndexFunc)t1_cmap_custom_char_index, |
| 252 | (FT_CMap_CharNextFunc) t1_cmap_custom_char_next, |
| 253 | |
| 254 | NULL, NULL, NULL, NULL, NULL |
| 255 | }; |
| 256 | |
| 257 | |
| 258 | /*************************************************************************/ |
| 259 | /*************************************************************************/ |
| 260 | /***** *****/ |
| 261 | /***** TYPE1 SYNTHETIC UNICODE ENCODING CMAP *****/ |
| 262 | /***** *****/ |
| 263 | /*************************************************************************/ |
| 264 | /*************************************************************************/ |
| 265 | |
| 266 | FT_CALLBACK_DEF( const char * ) |
Xianzhu Wang | e3b631d | 2013-09-03 11:05:38 -0700 | [diff] [blame] | 267 | psaux_get_glyph_name( T1_Face face, |
| 268 | FT_UInt idx ) |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 269 | { |
| 270 | return face->type1.glyph_names[idx]; |
| 271 | } |
| 272 | |
| 273 | |
| 274 | FT_CALLBACK_DEF( FT_Error ) |
| 275 | t1_cmap_unicode_init( PS_Unicodes unicodes ) |
| 276 | { |
| 277 | T1_Face face = (T1_Face)FT_CMAP_FACE( unicodes ); |
| 278 | FT_Memory memory = FT_FACE_MEMORY( face ); |
| 279 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| 280 | |
| 281 | |
| 282 | return psnames->unicodes_init( memory, |
| 283 | unicodes, |
| 284 | face->type1.num_glyphs, |
Xianzhu Wang | e3b631d | 2013-09-03 11:05:38 -0700 | [diff] [blame] | 285 | (PS_GetGlyphNameFunc)&psaux_get_glyph_name, |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 286 | (PS_FreeGlyphNameFunc)NULL, |
| 287 | (FT_Pointer)face ); |
| 288 | } |
| 289 | |
| 290 | |
| 291 | FT_CALLBACK_DEF( void ) |
| 292 | t1_cmap_unicode_done( PS_Unicodes unicodes ) |
| 293 | { |
| 294 | FT_Face face = FT_CMAP_FACE( unicodes ); |
| 295 | FT_Memory memory = FT_FACE_MEMORY( face ); |
| 296 | |
| 297 | |
| 298 | FT_FREE( unicodes->maps ); |
| 299 | unicodes->num_maps = 0; |
| 300 | } |
| 301 | |
| 302 | |
| 303 | FT_CALLBACK_DEF( FT_UInt ) |
| 304 | t1_cmap_unicode_char_index( PS_Unicodes unicodes, |
| 305 | FT_UInt32 char_code ) |
| 306 | { |
| 307 | T1_Face face = (T1_Face)FT_CMAP_FACE( unicodes ); |
| 308 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| 309 | |
| 310 | |
| 311 | return psnames->unicodes_char_index( unicodes, char_code ); |
| 312 | } |
| 313 | |
| 314 | |
David 'Digit' Turner | 295ffce | 2010-03-03 14:24:57 -0800 | [diff] [blame] | 315 | FT_CALLBACK_DEF( FT_UInt32 ) |
The Android Open Source Project | 049d6fe | 2009-03-03 19:29:31 -0800 | [diff] [blame] | 316 | t1_cmap_unicode_char_next( PS_Unicodes unicodes, |
| 317 | FT_UInt32 *pchar_code ) |
| 318 | { |
| 319 | T1_Face face = (T1_Face)FT_CMAP_FACE( unicodes ); |
| 320 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)face->psnames; |
| 321 | |
| 322 | |
| 323 | return psnames->unicodes_char_next( unicodes, pchar_code ); |
| 324 | } |
| 325 | |
| 326 | |
| 327 | FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec |
| 328 | t1_cmap_unicode_class_rec = |
| 329 | { |
| 330 | sizeof ( PS_UnicodesRec ), |
| 331 | |
| 332 | (FT_CMap_InitFunc) t1_cmap_unicode_init, |
| 333 | (FT_CMap_DoneFunc) t1_cmap_unicode_done, |
| 334 | (FT_CMap_CharIndexFunc)t1_cmap_unicode_char_index, |
| 335 | (FT_CMap_CharNextFunc) t1_cmap_unicode_char_next, |
| 336 | |
| 337 | NULL, NULL, NULL, NULL, NULL |
| 338 | }; |
| 339 | |
| 340 | |
| 341 | /* END */ |