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      1 /*
      2  * Copyright  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 "main-font-text.hh"
     28 
     29 #ifdef HAVE_FREETYPE
     30 #include <hb-ft.h>
     31 #endif
     32 
     33 struct shape_closure_consumer_t : option_group_t
     34 {
     35   shape_closure_consumer_t (option_parser_t *parser) :
     36 			    shaper (parser),
     37 			    show_glyph_names (true)
     38   {
     39     add_options (parser);
     40   }
     41 
     42   void add_options (struct option_parser_t *parser)
     43   {
     44     GOptionEntry entries[] =
     45     {
     46       {"no-glyph-names",	0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,	&this->show_glyph_names,	"Use glyph indices instead of names",	nullptr},
     47       {nullptr}
     48     };
     49     parser->add_group (entries,
     50 		       "format",
     51 		       "Format options:",
     52 		       "Options controlling output formatting",
     53 		       this);
     54   }
     55 
     56   void init (hb_buffer_t  *buffer_,
     57 	     const font_options_t *font_opts)
     58   {
     59     glyphs = hb_set_create ();
     60     font = hb_font_reference (font_opts->get_font ());
     61     failed = false;
     62     buffer = hb_buffer_reference (buffer_);
     63   }
     64   void consume_line (const char   *text,
     65 		     unsigned int  text_len,
     66 		     const char   *text_before,
     67 		     const char   *text_after)
     68   {
     69     hb_set_clear (glyphs);
     70     shaper.shape_closure (text, text_len, font, buffer, glyphs);
     71 
     72     if (hb_set_is_empty (glyphs))
     73       return;
     74 
     75     /* Print it out! */
     76     bool first = true;
     77     for (hb_codepoint_t i = -1; hb_set_next (glyphs, &i);)
     78     {
     79       if (first)
     80 	first = false;
     81       else
     82 	printf (" ");
     83       if (show_glyph_names)
     84       {
     85 	char glyph_name[64];
     86 	hb_font_glyph_to_string (font, i, glyph_name, sizeof (glyph_name));
     87 	printf ("%s", glyph_name);
     88       } else
     89 	printf ("%u", i);
     90     }
     91   }
     92   void finish (const font_options_t *font_opts)
     93   {
     94     printf ("\n");
     95     hb_font_destroy (font);
     96     font = nullptr;
     97     hb_set_destroy (glyphs);
     98     glyphs = nullptr;
     99     hb_buffer_destroy (buffer);
    100     buffer = nullptr;
    101   }
    102 
    103   bool failed;
    104 
    105   protected:
    106   shape_options_t shaper;
    107   hb_bool_t show_glyph_names;
    108 
    109   hb_set_t *glyphs;
    110   hb_font_t *font;
    111   hb_buffer_t *buffer;
    112 };
    113 
    114 int
    115 main (int argc, char **argv)
    116 {
    117   main_font_text_t<shape_closure_consumer_t, FONT_SIZE_NONE, 0> driver;
    118   return driver.main (argc, argv);
    119 }
    120