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 #ifndef HB_MAIN_FONT_TEXT_HH
28 #define HB_MAIN_FONT_TEXT_HH
29
30 #include "hb.hh"
31 #include "options.hh"
32
33 /* main() body for utilities taking font and processing text.*/
34
35 static char *
locale_to_utf8(char * s)36 locale_to_utf8 (char *s)
37 {
38 char *t;
39 GError *error = nullptr;
40
41 t = g_locale_to_utf8 (s, -1, nullptr, nullptr, &error);
42 if (!t)
43 {
44 fail (true, "Failed converting text to UTF-8");
45 }
46
47 return t;
48 }
49
50 template <typename consumer_t, int default_font_size, int subpixel_bits>
51 struct main_font_text_t
52 {
main_font_text_tmain_font_text_t53 main_font_text_t ()
54 : options ("[FONT-FILE] [TEXT]"),
55 font_opts (&options, default_font_size, subpixel_bits),
56 input (&options),
57 consumer (&options) {}
58
59 int
mainmain_font_text_t60 main (int argc, char **argv)
61 {
62 options.parse (&argc, &argv);
63
64 argc--, argv++;
65 if (argc && !font_opts.font_file) font_opts.font_file = locale_to_utf8 (argv[0]), argc--, argv++;
66 if (argc && !input.text && !input.text_file) input.text = locale_to_utf8 (argv[0]), argc--, argv++;
67 if (argc)
68 fail (true, "Too many arguments on the command line");
69 if (!font_opts.font_file)
70 options.usage ();
71 if (!input.text && !input.text_file)
72 input.text_file = g_strdup ("-");
73
74 hb_buffer_t *buffer = hb_buffer_create ();
75 consumer.init (buffer, &font_opts);
76 hb_buffer_destroy (buffer);
77
78 unsigned int text_len;
79 const char *text;
80 while ((text = input.get_line (&text_len)))
81 consumer.consume_line (text, text_len, input.text_before, input.text_after);
82
83 consumer.finish (&font_opts);
84
85 return consumer.failed ? 1 : 0;
86 }
87
88 protected:
89 option_parser_t options;
90 font_options_t font_opts;
91 text_options_t input;
92 consumer_t consumer;
93 };
94
95 #endif
96
97