harfbuzz/util/main-font-text.hh

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/*
* Copyright © 2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_MAIN_FONT_TEXT_HH
#define HB_MAIN_FONT_TEXT_HH
#include "options.hh"
/* main() body for utilities taking font and processing text.*/
template <typename consumer_t, typename font_options_t, typename text_options_t>
struct main_font_text_t : font_options_t, text_options_t, consumer_t
{
void add_options (struct option_parser_t *parser)
{
font_options_t::add_options (parser);
text_options_t::add_options (parser);
consumer_t::add_options (parser);
}
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int
operator () (int argc, char **argv)
{
option_parser_t options ("[FONT-FILE] [TEXT]");
add_options (&options);
options.parse (&argc, &argv);
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argc--, argv++;
if (argc && !this->font_file) this->font_file = locale_to_utf8 (argv[0]), argc--, argv++;
if (argc && !this->text && !this->text_file) this->text = locale_to_utf8 (argv[0]), argc--, argv++;
if (argc)
fail (true, "Too many arguments on the command line");
if (!this->font_file)
options.usage ();
if (!this->text && !this->text_file)
this->text_file = g_strdup ("-");
this->init (this);
unsigned int line_len;
const char *line;
while ((line = this->get_line (&line_len)))
this->consume_line (line, line_len, this->text_before, this->text_after);
this->finish (this);
return this->failed ? 1 : 0;
}
};
#endif