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/src/compiler/android-ndk/jni/freetype/src/psaux/t1cmap.c

http://ftk.googlecode.com/
C | 341 lines | 210 code | 91 blank | 40 comment | 16 complexity | a8f1dc7be3590baac0b76dc843d3f290 MD5 | raw file
  1/***************************************************************************/
  2/*                                                                         */
  3/*  t1cmap.c                                                               */
  4/*                                                                         */
  5/*    Type 1 character map support (body).                                 */
  6/*                                                                         */
  7/*  Copyright 2002, 2003, 2006, 2007 by                                    */
  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
 98  FT_CALLBACK_DEF( FT_UInt32 )
 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;
182    cmap->count   = (FT_UInt)( encoding->code_last - cmap->first );
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
216  FT_CALLBACK_DEF( FT_UInt32 )
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 * )
267  t1_get_glyph_name( T1_Face  face,
268                     FT_UInt  idx )
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,
285                                   (PS_GetGlyphNameFunc)&t1_get_glyph_name,
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
315  FT_CALLBACK_DEF( FT_UInt32 )
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 */