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

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• Hash : bd5b8a1f
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  Date : 2025-03-26T21:12:27
  

  [util] Report exit codes in help
  

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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 "options.hh"
  
  /* main() body for utilities taking font and processing text.*/
  
  template <typename consumer_t,
  	  typename font_options_type,
  	  typename text_options_type>
  struct main_font_text_t :
         option_parser_t,
         font_options_type,
         text_options_type,
         consumer_t
  {
    int operator () (int argc, char **argv)
    {
      add_options ();
      add_exit_code (RETURN_VALUE_OPERATION_FAILED, "Operation failed.");
  
      parse (&argc, &argv);
  
      this->init (this);
  
      while (this->consume_line (*this))
        ;
  
      this->finish (this);
  
      if (this->failed && return_value == RETURN_VALUE_SUCCESS)
        return_value = RETURN_VALUE_OPERATION_FAILED;
  
      return return_value;
    }
  
    protected:
  
    void add_options ()
    {
      font_options_type::add_options (this);
      text_options_type::add_options (this);
      consumer_t::add_options (this);
  
      GOptionEntry entries[] =
      {
        {G_OPTION_REMAINING,	0, G_OPTION_FLAG_IN_MAIN,
  				G_OPTION_ARG_CALLBACK,	(gpointer) &collect_rest,	nullptr,	"[FONT-FILE] [TEXT]"},
        {nullptr}
      };
      add_main_group (entries, this);
      option_parser_t::add_options ();
    }
  
    private:
  
    static gboolean
    collect_rest (const char *name G_GNUC_UNUSED,
  		const char *arg,
  		gpointer    data,
  		GError    **error)
    {
      main_font_text_t *thiz = (main_font_text_t *) data;
  
      if (!thiz->font_file)
      {
        thiz->font_file = g_strdup (arg);
        return true;
      }
  
      if (!thiz->text && !thiz->text_file)
      {
        thiz->text = g_strdup (arg);
        return true;
      }
  
      g_set_error (error, G_OPTION_ERROR, G_OPTION_ERROR_FAILED,
  		 "Too many arguments on the command line");
      return false;
    }
  };
  
  #endif
  

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