kc3-lang/harfbuzz/util/hb-ot-shape-closure.cc

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• Author : Behdad Esfahbod
  Date : 2017-10-15 12:11:08
  Hash : dbdbfe3d
  Message : Use nullptr instead of NULL

• util/hb-ot-shape-closure.cc

• /*
   * Copyright © 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
   */
  
  #include "main-font-text.hh"
  
  #ifdef HAVE_FREETYPE
  #include <hb-ft.h>
  #endif
  
  struct shape_closure_consumer_t : option_group_t
  {
    shape_closure_consumer_t (option_parser_t *parser) :
  			    shaper (parser),
  			    show_glyph_names (true)
    {
      add_options (parser);
    }
  
    void add_options (struct option_parser_t *parser)
    {
      GOptionEntry entries[] =
      {
        {"no-glyph-names",	0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,	&this->show_glyph_names,	"Use glyph indices instead of names",	nullptr},
        {nullptr}
      };
      parser->add_group (entries,
  		       "format",
  		       "Format options:",
  		       "Options controlling output formatting",
  		       this);
    }
  
    void init (hb_buffer_t  *buffer_,
  	     const font_options_t *font_opts)
    {
      glyphs = hb_set_create ();
      font = hb_font_reference (font_opts->get_font ());
      failed = false;
      buffer = hb_buffer_reference (buffer_);
    }
    void consume_line (const char   *text,
  		     unsigned int  text_len,
  		     const char   *text_before,
  		     const char   *text_after)
    {
      hb_set_clear (glyphs);
      shaper.shape_closure (text, text_len, font, buffer, glyphs);
  
      if (hb_set_is_empty (glyphs))
        return;
  
      /* Print it out! */
      bool first = true;
      for (hb_codepoint_t i = -1; hb_set_next (glyphs, &i);)
      {
        if (first)
  	first = false;
        else
  	printf (" ");
        if (show_glyph_names)
        {
  	char glyph_name[64];
  	hb_font_glyph_to_string (font, i, glyph_name, sizeof (glyph_name));
  	printf ("%s", glyph_name);
        } else
  	printf ("%u", i);
      }
    }
    void finish (const font_options_t *font_opts)
    {
      printf ("\n");
      hb_font_destroy (font);
      font = nullptr;
      hb_set_destroy (glyphs);
      glyphs = nullptr;
      hb_buffer_destroy (buffer);
      buffer = nullptr;
    }
  
    bool failed;
  
    protected:
    shape_options_t shaper;
    hb_bool_t show_glyph_names;
  
    hb_set_t *glyphs;
    hb_font_t *font;
    hb_buffer_t *buffer;
  };
  
  int
  main (int argc, char **argv)
  {
    main_font_text_t<shape_closure_consumer_t, FONT_SIZE_NONE, 0> driver;
    return driver.main (argc, argv);
  }