1/*
2 * Copyright © 2011,2012  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 "options.hh"
28
29#ifndef HB_MAIN_FONT_TEXT_HH
30#define HB_MAIN_FONT_TEXT_HH
31
32/* main() body for utilities taking font and processing text.*/
33
34static char *
35locale_to_utf8 (char *s)
36{
37  char *t;
38  GError *error = NULL;
39
40  t = g_locale_to_utf8 (s, -1, NULL, NULL, &error);
41  if (!t)
42  {
43     fail (true, "Failed converting text to UTF-8");
44  }
45
46  return t;
47}
48
49static hb_bool_t
50message_func (hb_buffer_t *buffer,
51	      hb_font_t *font,
52	      const char *message,
53	      void *user_data)
54{
55  fprintf (stderr, "HB: %s\n", message);
56  char buf[4096];
57  hb_buffer_serialize_glyphs (buffer, 0, hb_buffer_get_length (buffer),
58			      buf, sizeof (buf), NULL,
59			      font,
60			      HB_BUFFER_SERIALIZE_FORMAT_TEXT,
61			      HB_BUFFER_SERIALIZE_FLAG_DEFAULT);
62  fprintf (stderr, "HB: buffer [%s]\n", buf);
63  return true;
64}
65
66template <typename consumer_t, int default_font_size, int subpixel_bits>
67struct main_font_text_t
68{
69  main_font_text_t (void)
70		  : options ("[FONT-FILE] [TEXT]"),
71		    font_opts (&options, default_font_size, subpixel_bits),
72		    input (&options),
73		    consumer (&options) {}
74
75  int
76  main (int argc, char **argv)
77  {
78    options.parse (&argc, &argv);
79
80    argc--, argv++;
81    if (argc && !font_opts.font_file) font_opts.font_file = locale_to_utf8 (argv[0]), argc--, argv++;
82    if (argc && !input.text && !input.text_file) input.text = locale_to_utf8 (argv[0]), argc--, argv++;
83    if (argc)
84      fail (true, "Too many arguments on the command line");
85    if (!font_opts.font_file)
86      options.usage ();
87    if (!input.text && !input.text_file)
88      input.text_file = g_strdup ("-");
89
90    consumer.init (&font_opts);
91
92    hb_buffer_t *buffer = hb_buffer_create ();
93    if (debug)
94      hb_buffer_set_message_func (buffer, message_func, NULL, NULL);
95    unsigned int text_len;
96    const char *text;
97    while ((text = input.get_line (&text_len)))
98      consumer.consume_line (buffer, text, text_len, input.text_before, input.text_after);
99    hb_buffer_destroy (buffer);
100
101    consumer.finish (&font_opts);
102
103    return consumer.failed ? 1 : 0;
104  }
105
106  protected:
107  option_parser_t options;
108  font_options_t font_opts;
109  text_options_t input;
110  consumer_t consumer;
111};
112
113#endif
114
115