1 /*
2 * Copyright © 2018 Google, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Google Author(s): Garret Rieger, Rod Sheeter, Behdad Esfahbod
25 */
26
27 #include "hb-subset.hh"
28 #include "hb-set.hh"
29
30 /**
31 * hb_subset_input_create_or_fail:
32 *
33 * Return value: New subset input.
34 *
35 * Since: 1.8.0
36 **/
37 hb_subset_input_t *
hb_subset_input_create_or_fail()38 hb_subset_input_create_or_fail ()
39 {
40 hb_subset_input_t *input = hb_object_create<hb_subset_input_t>();
41
42 if (unlikely (!input))
43 return nullptr;
44
45 input->unicodes = hb_set_create ();
46 input->glyphs = hb_set_create ();
47 input->name_ids = hb_set_create ();
48 hb_set_add_range (input->name_ids, 0, 6);
49 input->name_languages = hb_set_create ();
50 hb_set_add (input->name_languages, 0x0409);
51 input->drop_tables = hb_set_create ();
52 input->drop_hints = false;
53 input->desubroutinize = false;
54 input->retain_gids = false;
55 input->name_legacy = false;
56
57 hb_tag_t default_drop_tables[] = {
58 // Layout disabled by default
59 HB_TAG ('m', 'o', 'r', 'x'),
60 HB_TAG ('m', 'o', 'r', 't'),
61 HB_TAG ('k', 'e', 'r', 'x'),
62 HB_TAG ('k', 'e', 'r', 'n'),
63
64 // Copied from fontTools:
65 HB_TAG ('B', 'A', 'S', 'E'),
66 HB_TAG ('J', 'S', 'T', 'F'),
67 HB_TAG ('D', 'S', 'I', 'G'),
68 HB_TAG ('E', 'B', 'D', 'T'),
69 HB_TAG ('E', 'B', 'L', 'C'),
70 HB_TAG ('E', 'B', 'S', 'C'),
71 HB_TAG ('S', 'V', 'G', ' '),
72 HB_TAG ('P', 'C', 'L', 'T'),
73 HB_TAG ('L', 'T', 'S', 'H'),
74 // Graphite tables
75 HB_TAG ('F', 'e', 'a', 't'),
76 HB_TAG ('G', 'l', 'a', 't'),
77 HB_TAG ('G', 'l', 'o', 'c'),
78 HB_TAG ('S', 'i', 'l', 'f'),
79 HB_TAG ('S', 'i', 'l', 'l'),
80 };
81
82 input->drop_tables->add_array (default_drop_tables, ARRAY_LENGTH (default_drop_tables));
83
84 return input;
85 }
86
87 /**
88 * hb_subset_input_reference: (skip)
89 * @subset_input: a subset_input.
90 *
91 *
92 *
93 * Return value:
94 *
95 * Since: 1.8.0
96 **/
97 hb_subset_input_t *
hb_subset_input_reference(hb_subset_input_t * subset_input)98 hb_subset_input_reference (hb_subset_input_t *subset_input)
99 {
100 return hb_object_reference (subset_input);
101 }
102
103 /**
104 * hb_subset_input_destroy:
105 * @subset_input: a subset_input.
106 *
107 * Since: 1.8.0
108 **/
109 void
hb_subset_input_destroy(hb_subset_input_t * subset_input)110 hb_subset_input_destroy (hb_subset_input_t *subset_input)
111 {
112 if (!hb_object_destroy (subset_input)) return;
113
114 hb_set_destroy (subset_input->unicodes);
115 hb_set_destroy (subset_input->glyphs);
116 hb_set_destroy (subset_input->name_ids);
117 hb_set_destroy (subset_input->name_languages);
118 hb_set_destroy (subset_input->drop_tables);
119
120 free (subset_input);
121 }
122
123 /**
124 * hb_subset_input_unicode_set:
125 * @subset_input: a subset_input.
126 *
127 * Since: 1.8.0
128 **/
129 HB_EXTERN hb_set_t *
hb_subset_input_unicode_set(hb_subset_input_t * subset_input)130 hb_subset_input_unicode_set (hb_subset_input_t *subset_input)
131 {
132 return subset_input->unicodes;
133 }
134
135 /**
136 * hb_subset_input_glyph_set:
137 * @subset_input: a subset_input.
138 *
139 * Since: 1.8.0
140 **/
141 HB_EXTERN hb_set_t *
hb_subset_input_glyph_set(hb_subset_input_t * subset_input)142 hb_subset_input_glyph_set (hb_subset_input_t *subset_input)
143 {
144 return subset_input->glyphs;
145 }
146
147 HB_EXTERN hb_set_t *
hb_subset_input_nameid_set(hb_subset_input_t * subset_input)148 hb_subset_input_nameid_set (hb_subset_input_t *subset_input)
149 {
150 return subset_input->name_ids;
151 }
152
153 HB_EXTERN hb_set_t *
hb_subset_input_namelangid_set(hb_subset_input_t * subset_input)154 hb_subset_input_namelangid_set (hb_subset_input_t *subset_input)
155 {
156 return subset_input->name_languages;
157 }
158
159 HB_EXTERN hb_set_t *
hb_subset_input_drop_tables_set(hb_subset_input_t * subset_input)160 hb_subset_input_drop_tables_set (hb_subset_input_t *subset_input)
161 {
162 return subset_input->drop_tables;
163 }
164
165 HB_EXTERN void
hb_subset_input_set_drop_hints(hb_subset_input_t * subset_input,hb_bool_t drop_hints)166 hb_subset_input_set_drop_hints (hb_subset_input_t *subset_input,
167 hb_bool_t drop_hints)
168 {
169 subset_input->drop_hints = drop_hints;
170 }
171
172 HB_EXTERN hb_bool_t
hb_subset_input_get_drop_hints(hb_subset_input_t * subset_input)173 hb_subset_input_get_drop_hints (hb_subset_input_t *subset_input)
174 {
175 return subset_input->drop_hints;
176 }
177
178 HB_EXTERN void
hb_subset_input_set_desubroutinize(hb_subset_input_t * subset_input,hb_bool_t desubroutinize)179 hb_subset_input_set_desubroutinize (hb_subset_input_t *subset_input,
180 hb_bool_t desubroutinize)
181 {
182 subset_input->desubroutinize = desubroutinize;
183 }
184
185 HB_EXTERN hb_bool_t
hb_subset_input_get_desubroutinize(hb_subset_input_t * subset_input)186 hb_subset_input_get_desubroutinize (hb_subset_input_t *subset_input)
187 {
188 return subset_input->desubroutinize;
189 }
190
191 /**
192 * hb_subset_input_set_retain_gids:
193 * @subset_input: a subset_input.
194 * @retain_gids: If true the subsetter will not renumber glyph ids.
195 * Since: 2.4.0
196 **/
197 HB_EXTERN void
hb_subset_input_set_retain_gids(hb_subset_input_t * subset_input,hb_bool_t retain_gids)198 hb_subset_input_set_retain_gids (hb_subset_input_t *subset_input,
199 hb_bool_t retain_gids)
200 {
201 subset_input->retain_gids = retain_gids;
202 }
203
204 /**
205 * hb_subset_input_get_retain_gids:
206 * Returns: value of retain_gids.
207 * Since: 2.4.0
208 **/
209 HB_EXTERN hb_bool_t
hb_subset_input_get_retain_gids(hb_subset_input_t * subset_input)210 hb_subset_input_get_retain_gids (hb_subset_input_t *subset_input)
211 {
212 return subset_input->retain_gids;
213 }
214
215 HB_EXTERN void
hb_subset_input_set_name_legacy(hb_subset_input_t * subset_input,hb_bool_t name_legacy)216 hb_subset_input_set_name_legacy (hb_subset_input_t *subset_input,
217 hb_bool_t name_legacy)
218 {
219 subset_input->name_legacy = name_legacy;
220 }
221
222 HB_EXTERN hb_bool_t
hb_subset_input_get_name_legacy(hb_subset_input_t * subset_input)223 hb_subset_input_get_name_legacy (hb_subset_input_t *subset_input)
224 {
225 return subset_input->name_legacy;
226 }
227