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comparison mupdf-source/thirdparty/harfbuzz/util/shape-output.hh @ 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 © 2010 Behdad Esfahbod
3 * Copyright © 2011,2012 Google, Inc.
4 *
5 * This is part of HarfBuzz, a text shaping library.
6 *
7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
12 *
13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Google Author(s): Behdad Esfahbod
26 */
27
28 #ifndef HB_SHAPE_OUTPUT_HH
29 #define HB_SHAPE_OUTPUT_HH
30
31 #include "shape-format.hh"
32 #include "output-options.hh"
33
34
35 struct shape_output_t : output_options_t<>
36 {
37 void add_options (option_parser_t *parser)
38 {
39 parser->set_summary ("Shape text with given font.");
40 output_options_t::add_options (parser, hb_buffer_serialize_list_formats ());
41 format.add_options (parser);
42 }
43
44 void init (hb_buffer_t *buffer, const font_options_t *font_opts)
45 {
46 gs = g_string_new (nullptr);
47 line_no = 0;
48 font = hb_font_reference (font_opts->font);
49
50 if (!output_format)
51 serialize_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT;
52 else
53 serialize_format = hb_buffer_serialize_format_from_string (output_format, -1);
54 /* An empty "output_format" parameter basically skips output generating.
55 * Useful for benchmarking. */
56 if ((!output_format || *output_format) &&
57 !hb_buffer_serialize_format_to_string (serialize_format))
58 {
59 if (explicit_output_format)
60 fail (false, "Unknown output format `%s'; supported formats are: %s",
61 output_format,
62 g_strjoinv ("/", const_cast<char**> (hb_buffer_serialize_list_formats ())));
63 else
64 /* Just default to TEXT if not explicitly requested and the
65 * file extension is not recognized. */
66 serialize_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT;
67 }
68
69 unsigned int flags = HB_BUFFER_SERIALIZE_FLAG_DEFAULT;
70 if (!format.show_glyph_names)
71 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES;
72 if (!format.show_clusters)
73 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS;
74 if (!format.show_positions)
75 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS;
76 if (!format.show_advances)
77 flags |= HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES;
78 if (format.show_extents)
79 flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS;
80 if (format.show_flags)
81 flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS;
82 serialize_flags = (hb_buffer_serialize_flags_t) flags;
83
84 if (format.trace)
85 hb_buffer_set_message_func (buffer, message_func, this, nullptr);
86 }
87 void new_line () { line_no++; }
88 void consume_text (hb_buffer_t *buffer,
89 const char *text,
90 unsigned int text_len,
91 hb_bool_t utf8_clusters)
92 {
93 g_string_set_size (gs, 0);
94 format.serialize_buffer_of_text (buffer, line_no, text, text_len, font, gs);
95 fprintf (out_fp, "%s", gs->str);
96 }
97 void error (const char *message)
98 {
99 g_string_set_size (gs, 0);
100 format.serialize_message (line_no, "error", message, gs);
101 fprintf (out_fp, "%s", gs->str);
102 }
103 void consume_glyphs (hb_buffer_t *buffer,
104 const char *text,
105 unsigned int text_len,
106 hb_bool_t utf8_clusters)
107 {
108 g_string_set_size (gs, 0);
109 format.serialize_buffer_of_glyphs (buffer, line_no, text, text_len, font,
110 serialize_format, serialize_flags, gs);
111 fprintf (out_fp, "%s", gs->str);
112 }
113 void finish (hb_buffer_t *buffer, const font_options_t *font_opts)
114 {
115 hb_buffer_set_message_func (buffer, nullptr, nullptr, nullptr);
116 hb_font_destroy (font);
117 g_string_free (gs, true);
118 gs = nullptr;
119 font = nullptr;
120 }
121
122 static hb_bool_t
123 message_func (hb_buffer_t *buffer,
124 hb_font_t *font,
125 const char *message,
126 void *user_data)
127 {
128 shape_output_t *that = (shape_output_t *) user_data;
129 that->trace (buffer, font, message);
130 return true;
131 }
132
133 void
134 trace (hb_buffer_t *buffer,
135 hb_font_t *font,
136 const char *message)
137 {
138 g_string_set_size (gs, 0);
139 format.serialize_line_no (line_no, gs);
140 g_string_append_printf (gs, "trace: %s buffer: ", message);
141 format.serialize (buffer, font, serialize_format, serialize_flags, gs);
142 g_string_append_c (gs, '\n');
143 fprintf (out_fp, "%s", gs->str);
144 }
145
146
147 protected:
148
149 shape_format_options_t format;
150
151 GString *gs = nullptr;
152 unsigned int line_no = 0;
153 hb_font_t *font = nullptr;
154 hb_buffer_serialize_format_t serialize_format = HB_BUFFER_SERIALIZE_FORMAT_INVALID;
155 hb_buffer_serialize_flags_t serialize_flags = HB_BUFFER_SERIALIZE_FLAG_DEFAULT;
156 };
157
158
159 #endif