Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/hb-static.cc @ 29:f76e6575dca9 v1.26.4+1

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+++++ v1.26.4+1
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 19 Sep 2025 19:59:23 +0200
parents b50eed0cc0ef
children
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1 /*
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2 * Copyright © 2018 Google, Inc.
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3 *
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4 * This is part of HarfBuzz, a text shaping library.
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5 *
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6 * Permission is hereby granted, without written agreement and without
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7 * license or royalty fees, to use, copy, modify, and distribute this
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8 * software and its documentation for any purpose, provided that the
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9 * above copyright notice and the following two paragraphs appear in
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10 * all copies of this software.
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11 *
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12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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16 * DAMAGE.
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17 *
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18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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23 *
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24 * Google Author(s): Behdad Esfahbod
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25 */
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27 #include "hb.hh"
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29 #include "hb-open-type.hh"
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30 #include "hb-face.hh"
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32 #include "hb-aat-layout-common.hh"
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33 #include "hb-aat-layout-feat-table.hh"
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34 #include "hb-ot-layout-common.hh"
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35 #include "hb-ot-cmap-table.hh"
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36 #include "hb-ot-color-colr-table.hh"
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37 #include "hb-ot-glyf-table.hh"
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38 #include "hb-ot-head-table.hh"
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39 #include "hb-ot-maxp-table.hh"
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41 #ifndef HB_NO_VISIBILITY
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42 #include "hb-ot-name-language-static.hh"
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44 uint64_t const _hb_NullPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
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45 /*thread_local*/ uint64_t _hb_CrapPool[(HB_NULL_POOL_SIZE + sizeof (uint64_t) - 1) / sizeof (uint64_t)] = {};
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47 DEFINE_NULL_NAMESPACE_BYTES (OT, Index) = {0xFF,0xFF};
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48 DEFINE_NULL_NAMESPACE_BYTES (OT, VarIdx) = {0xFF,0xFF,0xFF,0xFF};
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49 DEFINE_NULL_NAMESPACE_BYTES (OT, LangSys) = {0x00,0x00, 0xFF,0xFF, 0x00,0x00};
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50 DEFINE_NULL_NAMESPACE_BYTES (OT, RangeRecord) = {0x01};
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51 DEFINE_NULL_NAMESPACE_BYTES (OT, ClipRecord) = {0x01};
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52 DEFINE_NULL_NAMESPACE_BYTES (OT, CmapSubtableLongGroup) = {0x00,0x00,0x00,0x01, 0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x00};
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53 DEFINE_NULL_NAMESPACE_BYTES (AAT, SettingName) = {0xFF,0xFF, 0xFF,0xFF};
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54 DEFINE_NULL_NAMESPACE_BYTES (AAT, Lookup) = {0xFF,0xFF};
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57 /* hb_map_t */
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59 const hb_codepoint_t minus_1 = -1;
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61 /* hb_face_t */
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63 #ifndef HB_NO_BEYOND_64K
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64 static inline unsigned
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65 load_num_glyphs_from_loca (const hb_face_t *face)
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66 {
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67 unsigned ret = 0;
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68
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69 unsigned indexToLocFormat = face->table.head->indexToLocFormat;
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71 if (indexToLocFormat <= 1)
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72 {
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73 bool short_offset = 0 == indexToLocFormat;
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74 hb_blob_t *loca_blob = face->table.loca.get_blob ();
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75 ret = hb_max (1u, loca_blob->length / (short_offset ? 2 : 4)) - 1;
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76 }
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78 return ret;
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79 }
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80 #endif
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82 static inline unsigned
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83 load_num_glyphs_from_maxp (const hb_face_t *face)
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84 {
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85 return face->table.maxp->get_num_glyphs ();
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86 }
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88 unsigned int
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89 hb_face_t::load_num_glyphs () const
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90 {
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91 unsigned ret = 0;
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93 #ifndef HB_NO_BEYOND_64K
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94 ret = hb_max (ret, load_num_glyphs_from_loca (this));
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95 #endif
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96
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97 ret = hb_max (ret, load_num_glyphs_from_maxp (this));
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98
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99 num_glyphs = ret;
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100 return ret;
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101 }
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102
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103 unsigned int
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104 hb_face_t::load_upem () const
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105 {
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106 unsigned int ret = table.head->get_upem ();
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107 upem = ret;
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108 return ret;
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109 }
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110
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111
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112 /* hb_user_data_array_t */
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113
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114 bool
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115 hb_user_data_array_t::set (hb_user_data_key_t *key,
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116 void * data,
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117 hb_destroy_func_t destroy,
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118 hb_bool_t replace)
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119 {
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120 if (!key)
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121 return false;
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122
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123 if (replace) {
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124 if (!data && !destroy) {
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125 items.remove (key, lock);
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126 return true;
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127 }
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128 }
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129 hb_user_data_item_t item = {key, data, destroy};
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130 bool ret = !!items.replace_or_insert (item, lock, (bool) replace);
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131
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132 return ret;
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133 }
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134
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135 void *
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136 hb_user_data_array_t::get (hb_user_data_key_t *key)
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137 {
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138 hb_user_data_item_t item = {nullptr, nullptr, nullptr};
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139
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140 return items.find (key, &item, lock) ? item.data : nullptr;
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141 }
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142
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143
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144 #endif