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
34 static char *
locale_to_utf8(char * s)35 locale_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
49 static hb_bool_t
message_func(hb_buffer_t * buffer,hb_font_t * font,const char * message,void * user_data)50 message_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 printf ("HB: buffer [%s]\n", buf);
63 return true;
64 }
65
66 template <typename consumer_t, int default_font_size, int subpixel_bits>
67 struct main_font_text_t
68 {
main_font_text_tmain_font_text_t69 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
mainmain_font_text_t76 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