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comparison mupdf-source/thirdparty/harfbuzz/src/hb-static.cc @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
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): Behdad Esfahbod
25 */
26
27 #include "hb.hh"
28
29 #include "hb-open-type.hh"
30 #include "hb-face.hh"
31
32 #include "hb-aat-layout-common.hh"
33 #include "hb-aat-layout-feat-table.hh"
34 #include "hb-ot-layout-common.hh"
35 #include "hb-ot-cmap-table.hh"
36 #include "hb-ot-color-colr-table.hh"
37 #include "hb-ot-glyf-table.hh"
38 #include "hb-ot-head-table.hh"
39 #include "hb-ot-maxp-table.hh"
40
41 #ifndef HB_NO_VISIBILITY
42 #include "hb-ot-name-language-static.hh"
43
44 uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
45 /*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
46
47 DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF};
48 DEFINE_NULL_NAMESPACE_BYTES (OT, VarIdx) = {0xFF,0xFF,0xFF,0xFF};
49 DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00};
50 DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x01};
51 DEFINE_NULL_NAMESPACE_BYTES (OT, ClipRecord) = {0x01};
52 DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00};
53 DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF};
54 DEFINE_NULL_NAMESPACE_BYTES (AAT, Lookup) = {0xFF,0xFF};
55
56
57 /* hb_map_t */
58
59 const hb_codepoint_t minus_1 = -1;
60
61 /* hb_face_t */
62
63 #ifndef HB_NO_BEYOND_64K
64 static inline unsigned
65 load_num_glyphs_from_loca (const hb_face_t *face)
66 {
67 unsigned ret = 0;
68
69 unsigned indexToLocFormat = face->table.head->indexToLocFormat;
70
71 if (indexToLocFormat <= 1)
72 {
73 bool short_offset = 0 == indexToLocFormat;
74 hb_blob_t *loca_blob = face->table.loca.get_blob ();
75 ret = hb_max (1u, loca_blob->length / (short_offset ? 2 : 4)) - 1;
76 }
77
78 return ret;
79 }
80 #endif
81
82 static inline unsigned
83 load_num_glyphs_from_maxp (const hb_face_t *face)
84 {
85 return face->table.maxp->get_num_glyphs ();
86 }
87
88 unsigned int
89 hb_face_t::load_num_glyphs () const
90 {
91 unsigned ret = 0;
92
93 #ifndef HB_NO_BEYOND_64K
94 ret = hb_max (ret, load_num_glyphs_from_loca (this));
95 #endif
96
97 ret = hb_max (ret, load_num_glyphs_from_maxp (this));
98
99 num_glyphs = ret;
100 return ret;
101 }
102
103 unsigned int
104 hb_face_t::load_upem () const
105 {
106 unsigned int ret = table.head->get_upem ();
107 upem = ret;
108 return ret;
109 }
110
111
112 /* hb_user_data_array_t */
113
114 bool
115 hb_user_data_array_t::set (hb_user_data_key_t *key,
116 void * data,
117 hb_destroy_func_t destroy,
118 hb_bool_t replace)
119 {
120 if (!key)
121 return false;
122
123 if (replace) {
124 if (!data && !destroy) {
125 items.remove (key, lock);
126 return true;
127 }
128 }
129 hb_user_data_item_t item = {key, data, destroy};
130 bool ret = !!items.replace_or_insert (item, lock, (bool) replace);
131
132 return ret;
133 }
134
135 void *
136 hb_user_data_array_t::get (hb_user_data_key_t *key)
137 {
138 hb_user_data_item_t item = {nullptr, nullptr, nullptr};
139
140 return items.find (key, &item, lock) ? item.data : nullptr;
141 }
142
143
144 #endif