reactos/sdk/lib/3rdparty/freetype/src/psaux/t1cmap.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  t1cmap.c                                                               */
   4 /*                                                                         */
   5 /*    Type 1 character map support (body).                                 */
   6 /*                                                                         */
   7 /*  Copyright 2002-2016 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    = (FT_UInt)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 );
  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                          FT_Pointer  pointer )
 125   {
 126     FT_UNUSED( pointer );
 127
 128
 129     t1_cmap_std_init( cmap, 0 );
 130     return 0;
 131   }
 132
 133
 134   FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
 135   t1_cmap_standard_class_rec =
 136   {
 137     sizeof ( T1_CMapStdRec ),
 138
 139     (FT_CMap_InitFunc)     t1_cmap_standard_init,   /* init       */
 140     (FT_CMap_DoneFunc)     t1_cmap_std_done,        /* done       */
 141     (FT_CMap_CharIndexFunc)t1_cmap_std_char_index,  /* char_index */
 142     (FT_CMap_CharNextFunc) t1_cmap_std_char_next,   /* char_next  */
 143
 144     (FT_CMap_CharVarIndexFunc)    NULL,  /* char_var_index   */
 145     (FT_CMap_CharVarIsDefaultFunc)NULL,  /* char_var_default */
 146     (FT_CMap_VariantListFunc)     NULL,  /* variant_list     */
 147     (FT_CMap_CharVariantListFunc) NULL,  /* charvariant_list */
 148     (FT_CMap_VariantCharListFunc) NULL   /* variantchar_list */
 149   };
 150
 151
 152   FT_CALLBACK_DEF( FT_Error )
 153   t1_cmap_expert_init( T1_CMapStd  cmap,
 154                        FT_Pointer  pointer )
 155   {
 156     FT_UNUSED( pointer );
 157
 158
 159     t1_cmap_std_init( cmap, 1 );
 160     return 0;
 161   }
 162
 163   FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
 164   t1_cmap_expert_class_rec =
 165   {
 166     sizeof ( T1_CMapStdRec ),
 167
 168     (FT_CMap_InitFunc)     t1_cmap_expert_init,     /* init       */
 169     (FT_CMap_DoneFunc)     t1_cmap_std_done,        /* done       */
 170     (FT_CMap_CharIndexFunc)t1_cmap_std_char_index,  /* char_index */
 171     (FT_CMap_CharNextFunc) t1_cmap_std_char_next,   /* char_next  */
 172
 173     (FT_CMap_CharVarIndexFunc)    NULL,  /* char_var_index   */
 174     (FT_CMap_CharVarIsDefaultFunc)NULL,  /* char_var_default */
 175     (FT_CMap_VariantListFunc)     NULL,  /* variant_list     */
 176     (FT_CMap_CharVariantListFunc) NULL,  /* charvariant_list */
 177     (FT_CMap_VariantCharListFunc) NULL   /* variantchar_list */
 178   };
 179
 180
 181   /*************************************************************************/
 182   /*************************************************************************/
 183   /*****                                                               *****/
 184   /*****                    TYPE1 CUSTOM ENCODING CMAP                 *****/
 185   /*****                                                               *****/
 186   /*************************************************************************/
 187   /*************************************************************************/
 188
 189
 190   FT_CALLBACK_DEF( FT_Error )
 191   t1_cmap_custom_init( T1_CMapCustom  cmap,
 192                        FT_Pointer     pointer )
 193   {
 194     T1_Face      face     = (T1_Face)FT_CMAP_FACE( cmap );
 195     T1_Encoding  encoding = &face->type1.encoding;
 196
 197     FT_UNUSED( pointer );
 198
 199
 200     cmap->first   = (FT_UInt)encoding->code_first;
 201     cmap->count   = (FT_UInt)encoding->code_last - cmap->first;
 202     cmap->indices = encoding->char_index;
 203
 204     FT_ASSERT( cmap->indices );
 205     FT_ASSERT( encoding->code_first <= encoding->code_last );
 206
 207     return 0;
 208   }
 209
 210
 211   FT_CALLBACK_DEF( void )
 212   t1_cmap_custom_done( T1_CMapCustom  cmap )
 213   {
 214     cmap->indices = NULL;
 215     cmap->first   = 0;
 216     cmap->count   = 0;
 217   }
 218
 219
 220   FT_CALLBACK_DEF( FT_UInt )
 221   t1_cmap_custom_char_index( T1_CMapCustom  cmap,
 222                              FT_UInt32      char_code )
 223   {
 224     FT_UInt    result = 0;
 225
 226
 227     if ( ( char_code >= cmap->first )                  &&
 228          ( char_code < ( cmap->first + cmap->count ) ) )
 229       result = cmap->indices[char_code];
 230
 231     return result;
 232   }
 233
 234
 235   FT_CALLBACK_DEF( FT_UInt32 )
 236   t1_cmap_custom_char_next( T1_CMapCustom  cmap,
 237                             FT_UInt32     *pchar_code )
 238   {
 239     FT_UInt    result = 0;
 240     FT_UInt32  char_code = *pchar_code;
 241
 242
 243     char_code++;
 244
 245     if ( char_code < cmap->first )
 246       char_code = cmap->first;
 247
 248     for ( ; char_code < ( cmap->first + cmap->count ); char_code++ )
 249     {
 250       result = cmap->indices[char_code];
 251       if ( result != 0 )
 252         goto Exit;
 253     }
 254
 255     char_code = 0;
 256
 257   Exit:
 258     *pchar_code = char_code;
 259     return result;
 260   }
 261
 262
 263   FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
 264   t1_cmap_custom_class_rec =
 265   {
 266     sizeof ( T1_CMapCustomRec ),
 267
 268     (FT_CMap_InitFunc)     t1_cmap_custom_init,        /* init       */
 269     (FT_CMap_DoneFunc)     t1_cmap_custom_done,        /* done       */
 270     (FT_CMap_CharIndexFunc)t1_cmap_custom_char_index,  /* char_index */
 271     (FT_CMap_CharNextFunc) t1_cmap_custom_char_next,   /* char_next  */
 272
 273     (FT_CMap_CharVarIndexFunc)    NULL,  /* char_var_index   */
 274     (FT_CMap_CharVarIsDefaultFunc)NULL,  /* char_var_default */
 275     (FT_CMap_VariantListFunc)     NULL,  /* variant_list     */
 276     (FT_CMap_CharVariantListFunc) NULL,  /* charvariant_list */
 277     (FT_CMap_VariantCharListFunc) NULL   /* variantchar_list */
 278   };
 279
 280
 281   /*************************************************************************/
 282   /*************************************************************************/
 283   /*****                                                               *****/
 284   /*****            TYPE1 SYNTHETIC UNICODE ENCODING CMAP              *****/
 285   /*****                                                               *****/
 286   /*************************************************************************/
 287   /*************************************************************************/
 288
 289   FT_CALLBACK_DEF( const char * )
 290   psaux_get_glyph_name( T1_Face  face,
 291                         FT_UInt  idx )
 292   {
 293     return face->type1.glyph_names[idx];
 294   }
 295
 296
 297   FT_CALLBACK_DEF( FT_Error )
 298   t1_cmap_unicode_init( PS_Unicodes  unicodes,
 299                         FT_Pointer   pointer )
 300   {
 301     T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
 302     FT_Memory           memory  = FT_FACE_MEMORY( face );
 303     FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
 304
 305     FT_UNUSED( pointer );
 306
 307
 308     return psnames->unicodes_init( memory,
 309                                    unicodes,
 310                                    (FT_UInt)face->type1.num_glyphs,
 311                                    (PS_GetGlyphNameFunc)&psaux_get_glyph_name,
 312                                    (PS_FreeGlyphNameFunc)NULL,
 313                                    (FT_Pointer)face );
 314   }
 315
 316
 317   FT_CALLBACK_DEF( void )
 318   t1_cmap_unicode_done( PS_Unicodes  unicodes )
 319   {
 320     FT_Face    face   = FT_CMAP_FACE( unicodes );
 321     FT_Memory  memory = FT_FACE_MEMORY( face );
 322
 323
 324     FT_FREE( unicodes->maps );
 325     unicodes->num_maps = 0;
 326   }
 327
 328
 329   FT_CALLBACK_DEF( FT_UInt )
 330   t1_cmap_unicode_char_index( PS_Unicodes  unicodes,
 331                               FT_UInt32    char_code )
 332   {
 333     T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
 334     FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
 335
 336
 337     return psnames->unicodes_char_index( unicodes, char_code );
 338   }
 339
 340
 341   FT_CALLBACK_DEF( FT_UInt32 )
 342   t1_cmap_unicode_char_next( PS_Unicodes  unicodes,
 343                              FT_UInt32   *pchar_code )
 344   {
 345     T1_Face             face    = (T1_Face)FT_CMAP_FACE( unicodes );
 346     FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)face->psnames;
 347
 348
 349     return psnames->unicodes_char_next( unicodes, pchar_code );
 350   }
 351
 352
 353   FT_CALLBACK_TABLE_DEF const FT_CMap_ClassRec
 354   t1_cmap_unicode_class_rec =
 355   {
 356     sizeof ( PS_UnicodesRec ),
 357
 358     (FT_CMap_InitFunc)     t1_cmap_unicode_init,        /* init       */
 359     (FT_CMap_DoneFunc)     t1_cmap_unicode_done,        /* done       */
 360     (FT_CMap_CharIndexFunc)t1_cmap_unicode_char_index,  /* char_index */
 361     (FT_CMap_CharNextFunc) t1_cmap_unicode_char_next,   /* char_next  */
 362
 363     (FT_CMap_CharVarIndexFunc)    NULL,  /* char_var_index   */
 364     (FT_CMap_CharVarIsDefaultFunc)NULL,  /* char_var_default */
 365     (FT_CMap_VariantListFunc)     NULL,  /* variant_list     */
 366     (FT_CMap_CharVariantListFunc) NULL,  /* charvariant_list */
 367     (FT_CMap_VariantCharListFunc) NULL   /* variantchar_list */
 368   };
 369
 370
 371 /* END */