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comparison mupdf-source/thirdparty/harfbuzz/src/graph/gsubgpos-context.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 © 2022 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
25 */
26
27 #include "gsubgpos-graph.hh"
28
29 namespace graph {
30
31 gsubgpos_graph_context_t::gsubgpos_graph_context_t (hb_tag_t table_tag_,
32 graph_t& graph_)
33 : table_tag (table_tag_),
34 graph (graph_),
35 lookup_list_index (0),
36 lookups ()
37 {
38 if (table_tag_ != HB_OT_TAG_GPOS
39 && table_tag_ != HB_OT_TAG_GSUB)
40 return;
41
42 GSTAR* gstar = graph::GSTAR::graph_to_gstar (graph_);
43 if (gstar) {
44 gstar->find_lookups (graph, lookups);
45 lookup_list_index = gstar->get_lookup_list_index (graph_);
46 }
47 }
48
49 unsigned gsubgpos_graph_context_t::create_node (unsigned size)
50 {
51 char* buffer = (char*) hb_calloc (1, size);
52 if (!buffer)
53 return -1;
54
55 add_buffer (buffer);
56
57 return graph.new_node (buffer, buffer + size);
58 }
59
60 unsigned gsubgpos_graph_context_t::num_non_ext_subtables () {
61 unsigned count = 0;
62 for (auto l : lookups.values ())
63 {
64 if (l->is_extension (table_tag)) continue;
65 count += l->number_of_subtables ();
66 }
67 return count;
68 }
69
70 }