kc3-lang/harfbuzz/util/main-font-text.hh

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• Hash : 50379fbb
  Author :
  Date : 2021-07-28T16:13:49
  

  [util] Don’t split text at new lines in batch mode
  
  In batch mode (which is used for testing) we are probably not interested
  in splitting text into lines as we could have split the string into
  different tests. This fixes a bunch of AOTS tests that use newlines as
  input.
  

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• util/main-font-text.hh

• /*
   * 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 "hb.hh"
  #include "options.hh"
  
  /* main() body for utilities taking font and processing text.*/
  
  static char *
  locale_to_utf8 (char *s)
  {
    char *t;
    GError *error = nullptr;
  
    t = g_locale_to_utf8 (s, -1, nullptr, nullptr, &error);
    if (!t)
    {
       fail (true, "Failed converting text to UTF-8");
    }
  
    return t;
  }
  
  template <typename consumer_t, int default_font_size, int subpixel_bits, char eol = '\n'>
  struct main_font_text_t
  {
    main_font_text_t ()
  		  : options ("[FONT-FILE] [TEXT]"),
  		    font_opts (&options, default_font_size, subpixel_bits),
  		    input (&options),
  		    consumer (&options) {}
  
    int
    main (int argc, char **argv)
    {
      options.parse (&argc, &argv);
  
      argc--, argv++;
      if (argc && !font_opts.font_file) font_opts.font_file = locale_to_utf8 (argv[0]), argc--, argv++;
      if (argc && !input.text && !input.text_file) input.text = locale_to_utf8 (argv[0]), argc--, argv++;
      if (argc)
        fail (true, "Too many arguments on the command line");
      if (!font_opts.font_file)
        options.usage ();
      if (!input.text && !input.text_file)
        input.text_file = g_strdup ("-");
  
      hb_buffer_t *buffer = hb_buffer_create ();
      consumer.init (buffer, &font_opts);
      hb_buffer_destroy (buffer);
  
      unsigned int text_len;
      const char *text;
      while ((text = input.get_line (&text_len, eol)))
        consumer.consume_line (text, text_len, input.text_before, input.text_after);
  
      consumer.finish (&font_opts);
  
      return consumer.failed ? 1 : 0;
    }
  
    protected:
    option_parser_t options;
    font_options_t font_opts;
    text_options_t input;
    consumer_t consumer;
  };
  
  #endif
  
  

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