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cffcmap.c
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1 /****************************************************************************
2  *
3  * cffcmap.c
4  *
5  * CFF character mapping table (cmap) support (body).
6  *
7  * Copyright (C) 2002-2020 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 <freetype/internal/ftdebug.h>
20 #include "cffcmap.h"
21 #include "cffload.h"
22 
23 #include "cfferrs.h"
24 
25 
26  /*************************************************************************/
27  /*************************************************************************/
28  /***** *****/
29  /***** CFF STANDARD (AND EXPERT) ENCODING CMAPS *****/
30  /***** *****/
31  /*************************************************************************/
32  /*************************************************************************/
33 
37  {
39  CFF_Font cff = (CFF_Font)face->extra.data;
41 
42  FT_UNUSED( pointer );
43 
44 
45  cmap->gids = encoding->codes;
46 
47  return 0;
48  }
49 
50 
51  FT_CALLBACK_DEF( void )
53  {
54  cmap->gids = NULL;
55  }
56 
57 
60  FT_UInt32 char_code )
61  {
62  FT_UInt result = 0;
63 
64 
65  if ( char_code < 256 )
66  result = cmap->gids[char_code];
67 
68  return result;
69  }
70 
71 
72  FT_CALLBACK_DEF( FT_UInt32 )
74  FT_UInt32 *pchar_code )
75  {
76  FT_UInt result = 0;
77  FT_UInt32 char_code = *pchar_code;
78 
79 
80  *pchar_code = 0;
81 
82  if ( char_code < 255 )
83  {
84  FT_UInt code = (FT_UInt)(char_code + 1);
85 
86 
87  for (;;)
88  {
89  if ( code >= 256 )
90  break;
91 
92  result = cmap->gids[code];
93  if ( result != 0 )
94  {
95  *pchar_code = code;
96  break;
97  }
98 
99  code++;
100  }
101  }
102  return result;
103  }
104 
105 
107  cff_cmap_encoding_class_rec,
108 
109  sizeof ( CFF_CMapStdRec ),
110 
115 
116  (FT_CMap_CharVarIndexFunc) NULL, /* char_var_index */
117  (FT_CMap_CharVarIsDefaultFunc)NULL, /* char_var_default */
118  (FT_CMap_VariantListFunc) NULL, /* variant_list */
119  (FT_CMap_CharVariantListFunc) NULL, /* charvariant_list */
120  (FT_CMap_VariantCharListFunc) NULL /* variantchar_list */
121  )
122 
123 
124  /*************************************************************************/
125  /*************************************************************************/
126  /***** *****/
127  /***** CFF SYNTHETIC UNICODE ENCODING CMAP *****/
128  /***** *****/
129  /*************************************************************************/
130  /*************************************************************************/
131 
132  FT_CALLBACK_DEF( const char* )
133  cff_sid_to_glyph_name( TT_Face face,
135  {
136  CFF_Font cff = (CFF_Font)face->extra.data;
138  FT_UInt sid = charset->sids[idx];
139 
140 
142  }
143 
144 
148  {
149  TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes );
150  FT_Memory memory = FT_FACE_MEMORY( face );
151  CFF_Font cff = (CFF_Font)face->extra.data;
153  FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames;
154 
155  FT_UNUSED( pointer );
156 
157 
158  /* can't build Unicode map for CID-keyed font */
159  /* because we don't know glyph names. */
160  if ( !charset->sids )
161  return FT_THROW( No_Unicode_Glyph_Name );
162 
163  if ( !psnames->unicodes_init )
164  return FT_THROW( Unimplemented_Feature );
165 
166  return psnames->unicodes_init( memory,
167  unicodes,
168  cff->num_glyphs,
169  (PS_GetGlyphNameFunc)&cff_sid_to_glyph_name,
171  (FT_Pointer)face );
172  }
173 
174 
175  FT_CALLBACK_DEF( void )
177  {
178  FT_Face face = FT_CMAP_FACE( unicodes );
179  FT_Memory memory = FT_FACE_MEMORY( face );
180 
181 
182  FT_FREE( unicodes->maps );
183  unicodes->num_maps = 0;
184  }
185 
186 
189  FT_UInt32 char_code )
190  {
191  TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes );
192  CFF_Font cff = (CFF_Font)face->extra.data;
193  FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames;
194 
195 
196  return psnames->unicodes_char_index( unicodes, char_code );
197  }
198 
199 
200  FT_CALLBACK_DEF( FT_UInt32 )
202  FT_UInt32 *pchar_code )
203  {
204  TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes );
205  CFF_Font cff = (CFF_Font)face->extra.data;
206  FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames;
207 
208 
209  return psnames->unicodes_char_next( unicodes, pchar_code );
210  }
211 
212 
214  cff_cmap_unicode_class_rec,
215 
216  sizeof ( PS_UnicodesRec ),
217 
222 
223  (FT_CMap_CharVarIndexFunc) NULL, /* char_var_index */
224  (FT_CMap_CharVarIsDefaultFunc)NULL, /* char_var_default */
225  (FT_CMap_VariantListFunc) NULL, /* variant_list */
226  (FT_CMap_CharVariantListFunc) NULL, /* charvariant_list */
227  (FT_CMap_VariantCharListFunc) NULL /* variantchar_list */
228  )
229 
230 
231 /* END */
int code
Definition: aftopl.c:52
unsigned char * pointer
Definition: fontmisc.h:33
#define FT_UNUSED(arg)
typedefFT_BEGIN_HEADER struct FT_MemoryRec_ * FT_Memory
Definition: ftsystem.h:64
void * FT_Pointer
Definition: fttypes.h:310
int FT_Error
Definition: fttypes.h:299
unsigned int FT_UInt
Definition: fttypes.h:231
struct CFF_FontRec_ * CFF_Font
Definition: cfftypes.h:156
#define FT_CALLBACK_DEF(x)
#define FT_THROW(e)
Definition: ftdebug.h:243
#define FT_FREE(ptr)
Definition: ftmemory.h:337
FT_UInt(* FT_CMap_CharNextFunc)(FT_CMap cmap, FT_UInt32 *achar_code)
Definition: ftobjs.h:179
#define NULL
Definition: ftobjs.h:61
FT_UInt(* FT_CMap_CharVarIndexFunc)(FT_CMap cmap, FT_CMap unicode_cmap, FT_UInt32 char_code, FT_UInt32 variant_selector)
Definition: ftobjs.h:183
FT_UInt32 *(* FT_CMap_VariantListFunc)(FT_CMap cmap, FT_Memory mem)
Definition: ftobjs.h:194
FT_Int(* FT_CMap_CharVarIsDefaultFunc)(FT_CMap cmap, FT_UInt32 char_code, FT_UInt32 variant_selector)
Definition: ftobjs.h:189
FT_UInt32 *(* FT_CMap_VariantCharListFunc)(FT_CMap cmap, FT_Memory mem, FT_UInt32 variant_selector)
Definition: ftobjs.h:203
#define FT_FACE_MEMORY(x)
Definition: ftobjs.h:603
FT_UInt32 *(* FT_CMap_CharVariantListFunc)(FT_CMap cmap, FT_Memory mem, FT_UInt32 char_code)
Definition: ftobjs.h:198
FT_Error(* FT_CMap_InitFunc)(FT_CMap cmap, FT_Pointer init_data)
Definition: ftobjs.h:168
void(* FT_CMap_DoneFunc)(FT_CMap cmap)
Definition: ftobjs.h:172
FT_UInt(* FT_CMap_CharIndexFunc)(FT_CMap cmap, FT_UInt32 char_code)
Definition: ftobjs.h:175
#define FT_CMAP_FACE(x)
Definition: ftobjs.h:163
const char *(* PS_GetGlyphNameFunc)(FT_Pointer data, FT_UInt string_index)
Definition: svpscmap.h:77
void(* PS_FreeGlyphNameFunc)(FT_Pointer data, const char *name)
Definition: svpscmap.h:85
struct TT_FaceRec_ * TT_Face
Definition: tttypes.h:988
cff_cmap_encoding_init(CFF_CMapStd cmap, FT_Pointer pointer)
Definition: cffcmap.c:35
cff_cmap_encoding_char_index(CFF_CMapStd cmap, FT_UInt32 char_code)
Definition: cffcmap.c:59
FT_DEFINE_CMAP_CLASS(cff_cmap_encoding_class_rec, sizeof(CFF_CMapStdRec),(FT_CMap_InitFunc) cff_cmap_encoding_init,(FT_CMap_DoneFunc) cff_cmap_encoding_done,(FT_CMap_CharIndexFunc) cff_cmap_encoding_char_index,(FT_CMap_CharNextFunc) cff_cmap_encoding_char_next,(FT_CMap_CharVarIndexFunc) NULL,(FT_CMap_CharVarIsDefaultFunc) NULL,(FT_CMap_VariantListFunc) NULL,(FT_CMap_CharVariantListFunc) NULL,(FT_CMap_VariantCharListFunc) NULL) cff_sid_to_glyph_name(TT_Face face
cff_cmap_unicode_char_index(PS_Unicodes unicodes, FT_UInt32 char_code)
Definition: cffcmap.c:188
cff_cmap_encoding_done(CFF_CMapStd cmap)
Definition: cffcmap.c:52
FT_UInt sid
Definition: cffcmap.c:138
cff_cmap_unicode_done(PS_Unicodes unicodes)
Definition: cffcmap.c:176
return cff_index_get_sid_string(cff, sid)
FT_UInt idx
Definition: cffcmap.c:135
cff_cmap_encoding_char_next(CFF_CMapStd cmap, FT_UInt32 *pchar_code)
Definition: cffcmap.c:73
cff_cmap_unicode_char_next(PS_Unicodes unicodes, FT_UInt32 *pchar_code)
Definition: cffcmap.c:201
cff_cmap_unicode_init(PS_Unicodes unicodes, FT_Pointer pointer)
Definition: cffcmap.c:146
typedefFT_BEGIN_HEADER struct CFF_CMapStdRec_ * CFF_CMapStd
Definition: cffcmap.h:36
CFF_Font cff
Definition: cffdrivr.c:701
FT_Face face
Definition: cffdrivr.c:659
#define char_code
Definition: mfluac.c:331
charset
Definition: charset.h:51
FT_Service_PsCMaps psnames
Definition: cfftypes.h:387
CFF_CharsetRec charset
Definition: cfftypes.h:359
CFF_EncodingRec encoding
Definition: cfftypes.h:358
FT_UInt num_glyphs
Definition: cfftypes.h:344
Definition: inftrees.h:24
TT_CharMap cmap
Definition: ttf2pfb.c:163