1 /****************************************************************************
2 *
3 * ftsnames.c
4 *
5 * Simple interface to access SFNT name tables (which are used
6 * to hold font names, copyright info, notices, etc.) (body).
7 *
8 * This is _not_ used to retrieve glyph names!
9 *
10 * Copyright (C) 1996-2019 by
11 * David Turner, Robert Wilhelm, and Werner Lemberg.
12 *
13 * This file is part of the FreeType project, and may only be used,
14 * modified, and distributed under the terms of the FreeType project
15 * license, LICENSE.TXT. By continuing to use, modify, or distribute
16 * this file you indicate that you have read the license and
17 * understand and accept it fully.
18 *
19 */
20
21
22 #include <ft2build.h>
23 #include FT_INTERNAL_DEBUG_H
24
25 #include FT_SFNT_NAMES_H
26 #include FT_INTERNAL_TRUETYPE_TYPES_H
27 #include FT_INTERNAL_STREAM_H
28
29
30 #ifdef TT_CONFIG_OPTION_SFNT_NAMES
31
32
33 /* documentation is in ftsnames.h */
34
35 FT_EXPORT_DEF( FT_UInt )
36 FT_Get_Sfnt_Name_Count( FT_Face face )
37 {
38 return ( face && FT_IS_SFNT( face ) ) ? ((TT_Face)face)->num_names : 0;
39 }
40
41
42 /* documentation is in ftsnames.h */
43
44 FT_EXPORT_DEF( FT_Error )
45 FT_Get_Sfnt_Name( FT_Face face,
46 FT_UInt idx,
47 FT_SfntName *aname )
48 {
49 FT_Error error = FT_ERR( Invalid_Argument );
50
51
52 if ( aname && face && FT_IS_SFNT( face ) )
53 {
54 TT_Face ttface = (TT_Face)face;
55
56
57 if ( idx < (FT_UInt)ttface->num_names )
58 {
59 TT_Name entry = ttface->name_table.names + idx;
60
61
62 /* load name on demand */
63 if ( entry->stringLength > 0 && !entry->string )
64 {
65 FT_Memory memory = face->memory;
66 FT_Stream stream = face->stream;
67
68
69 if ( FT_NEW_ARRAY ( entry->string, entry->stringLength ) ||
70 FT_STREAM_SEEK( entry->stringOffset ) ||
71 FT_STREAM_READ( entry->string, entry->stringLength ) )
72 {
73 FT_FREE( entry->string );
74 entry->stringLength = 0;
75 }
76 }
77
78 aname->platform_id = entry->platformID;
79 aname->encoding_id = entry->encodingID;
80 aname->language_id = entry->languageID;
81 aname->name_id = entry->nameID;
82 aname->string = (FT_Byte*)entry->string;
83 aname->string_len = entry->stringLength;
84
85 error = FT_Err_Ok;
86 }
87 }
88
89 return error;
90 }
91
92
93 /* documentation is in ftsnames.h */
94
95 FT_EXPORT_DEF( FT_Error )
96 FT_Get_Sfnt_LangTag( FT_Face face,
97 FT_UInt langID,
98 FT_SfntLangTag *alangTag )
99 {
100 FT_Error error = FT_ERR( Invalid_Argument );
101
102
103 if ( alangTag && face && FT_IS_SFNT( face ) )
104 {
105 TT_Face ttface = (TT_Face)face;
106
107
108 if ( ttface->name_table.format != 1 )
109 return FT_THROW( Invalid_Table );
110
111 if ( langID > 0x8000U &&
112 langID - 0x8000U < ttface->name_table.numLangTagRecords )
113 {
114 TT_LangTag entry = ttface->name_table.langTags +
115 ( langID - 0x8000U );
116
117
118 /* load name on demand */
119 if ( entry->stringLength > 0 && !entry->string )
120 {
121 FT_Memory memory = face->memory;
122 FT_Stream stream = face->stream;
123
124
125 if ( FT_NEW_ARRAY ( entry->string, entry->stringLength ) ||
126 FT_STREAM_SEEK( entry->stringOffset ) ||
127 FT_STREAM_READ( entry->string, entry->stringLength ) )
128 {
129 FT_FREE( entry->string );
130 entry->stringLength = 0;
131 }
132 }
133
134 alangTag->string = (FT_Byte*)entry->string;
135 alangTag->string_len = entry->stringLength;
136
137 error = FT_Err_Ok;
138 }
139 }
140
141 return error;
142 }
143
144
145 #else /* !TT_CONFIG_OPTION_SFNT_NAMES */
146
147
148 FT_EXPORT_DEF( FT_UInt )
149 FT_Get_Sfnt_Name_Count( FT_Face face )
150 {
151 FT_UNUSED( face );
152
153 return 0;
154 }
155
156
157 FT_EXPORT_DEF( FT_Error )
158 FT_Get_Sfnt_Name( FT_Face face,
159 FT_UInt idx,
160 FT_SfntName *aname )
161 {
162 FT_UNUSED( face );
163 FT_UNUSED( idx );
164 FT_UNUSED( aname );
165
166 return FT_THROW( Unimplemented_Feature );
167 }
168
169
170 FT_EXPORT_DEF( FT_Error )
171 FT_Get_Sfnt_LangTag( FT_Face face,
172 FT_UInt langID,
173 FT_SfntLangTag *alangTag )
174 {
175 FT_UNUSED( face );
176 FT_UNUSED( langID );
177 FT_UNUSED( alangTag );
178
179 return FT_THROW( Unimplemented_Feature );
180 }
181
182
183 #endif /* !TT_CONFIG_OPTION_SFNT_NAMES */
184
185
186 /* END */