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#include "main-font-text.hh"
29#include "shape-consumer.hh"
30
31struct output_buffer_t
32{
33  output_buffer_t (option_parser_t *parser)
34		  : options (parser, hb_buffer_serialize_list_formats ()),
35		    format (parser),
36		    gs (nullptr),
37		    line_no (0),
38		    font (nullptr),
39		    output_format (HB_BUFFER_SERIALIZE_FORMAT_INVALID),
40		    format_flags (HB_BUFFER_SERIALIZE_FLAG_DEFAULT) {}
41
42  void init (hb_buffer_t *buffer, const font_options_t *font_opts)
43  {
44    options.get_file_handle ();
45    gs = g_string_new (nullptr);
46    line_no = 0;
47    font = hb_font_reference (font_opts->get_font ());
48
49    if (!options.output_format)
50      output_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT;
51    else
52      output_format = hb_buffer_serialize_format_from_string (options.output_format, -1);
53    /* An empty "output_format" parameter basically skips output generating.
54     * Useful for benchmarking. */
55    if ((!options.output_format || *options.output_format) &&
56	!hb_buffer_serialize_format_to_string (output_format))
57    {
58      if (options.explicit_output_format)
59	fail (false, "Unknown output format `%s'; supported formats are: %s",
60	      options.output_format,
61	      g_strjoinv ("/", const_cast<char**> (options.supported_formats)));
62      else
63	/* Just default to TEXT if not explicitly requested and the
64	 * file extension is not recognized. */
65	output_format = HB_BUFFER_SERIALIZE_FORMAT_TEXT;
66    }
67
68    unsigned int flags = HB_BUFFER_SERIALIZE_FLAG_DEFAULT;
69    if (!format.show_glyph_names)
70      flags |= HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES;
71    if (!format.show_clusters)
72      flags |= HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS;
73    if (!format.show_positions)
74      flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS;
75    if (format.show_extents)
76      flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS;
77    if (format.show_flags)
78      flags |= HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS;
79    format_flags = (hb_buffer_serialize_flags_t) flags;
80
81    if (format.trace)
82      hb_buffer_set_message_func (buffer, message_func, this, nullptr);
83  }
84  void new_line (void)
85  {
86    line_no++;
87  }
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 (options.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 (options.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				       output_format, format_flags, gs);
111    fprintf (options.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    output_buffer_t *that = (output_buffer_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_glyphs (buffer, font, output_format, format_flags, gs);
142    g_string_append_c (gs, '\n');
143    fprintf (options.fp, "%s", gs->str);
144  }
145
146
147  protected:
148  output_options_t options;
149  format_options_t format;
150
151  GString *gs;
152  unsigned int line_no;
153  hb_font_t *font;
154  hb_buffer_serialize_format_t output_format;
155  hb_buffer_serialize_flags_t format_flags;
156};
157
158int
159main (int argc, char **argv)
160{
161  main_font_text_t<shape_consumer_t<output_buffer_t>, FONT_SIZE_UPEM, 0> driver;
162  return driver.main (argc, argv);
163}
164