util/shape-format.hh - third_party/harfbuzz - Git at Google

 /*
  * Copyright © 2011  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 SHAPE_FORMAT_OPTIONS_HH
 #define SHAPE_FORMAT_OPTIONS_HH

 #include "options.hh"


 struct shape_format_options_t
 {
   void add_options (option_parser_t *parser);

   void serialize (hb_buffer_t  *buffer,
 			 hb_font_t    *font,
 			 hb_buffer_serialize_format_t format,
 			 hb_buffer_serialize_flags_t flags,
 			 GString      *gs);
   void serialize_line_no (unsigned int  line_no,
 			  GString      *gs);
   void serialize_buffer_of_text (hb_buffer_t  *buffer,
 				 unsigned int  line_no,
 				 const char   *text,
 				 unsigned int  text_len,
 				 hb_font_t    *font,
 				 GString      *gs);
   void serialize_message (unsigned int  line_no,
 			  const char   *type,
 			  const char   *msg,
 			  GString      *gs);
   void serialize_buffer_of_glyphs (hb_buffer_t  *buffer,
 				   unsigned int  line_no,
 				   const char   *text,
 				   unsigned int  text_len,
 				   hb_font_t    *font,
 				   hb_buffer_serialize_format_t output_format,
 				   hb_buffer_serialize_flags_t format_flags,
 				   GString      *gs);


   hb_bool_t show_glyph_names = true;
   hb_bool_t show_positions = true;
   hb_bool_t show_advances = true;
   hb_bool_t show_clusters = true;
   hb_bool_t show_text = false;
   hb_bool_t show_unicode = false;
   hb_bool_t show_line_num = false;
   hb_bool_t show_extents = false;
   hb_bool_t show_flags = false;
   hb_bool_t trace = false;
 };


 static gboolean
 parse_verbose (const char *name G_GNUC_UNUSED,
 	       const char *arg G_GNUC_UNUSED,
 	       gpointer    data G_GNUC_UNUSED,
 	       GError    **error G_GNUC_UNUSED)
 {
   shape_format_options_t *format_opts = (shape_format_options_t *) data;
   format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true;
   return true;
 }

 static gboolean
 parse_ned (const char *name G_GNUC_UNUSED,
 	   const char *arg G_GNUC_UNUSED,
 	   gpointer    data G_GNUC_UNUSED,
 	   GError    **error G_GNUC_UNUSED)
 {
   shape_format_options_t *format_opts = (shape_format_options_t *) data;
   format_opts->show_clusters = format_opts->show_advances = false;
   return true;
 }

 inline void
 shape_format_options_t::serialize (hb_buffer_t *buffer,
 				   hb_font_t   *font,
 				   hb_buffer_serialize_format_t output_format,
 				   hb_buffer_serialize_flags_t flags,
 				   GString     *gs)
 {
   unsigned int num_glyphs = hb_buffer_get_length (buffer);
   unsigned int start = 0;

   while (start < num_glyphs)
   {
     char buf[32768];
     unsigned int consumed;
     start += hb_buffer_serialize (buffer, start, num_glyphs,
 				  buf, sizeof (buf), &consumed,
 				  font, output_format, flags);
     if (!consumed)
       break;
     g_string_append (gs, buf);
   }
 }

 inline void
 shape_format_options_t::serialize_line_no (unsigned int  line_no,
 					   GString      *gs)
 {
   if (show_line_num)
     g_string_append_printf (gs, "%d: ", line_no);
 }
 inline void
 shape_format_options_t::serialize_buffer_of_text (hb_buffer_t  *buffer,
 						  unsigned int  line_no,
 						  const char   *text,
 						  unsigned int  text_len,
 						  hb_font_t    *font,
 						  GString      *gs)
 {
   if (show_text)
   {
     serialize_line_no (line_no, gs);
     g_string_append_c (gs, '(');
     g_string_append_len (gs, text, text_len);
     g_string_append_c (gs, ')');
     g_string_append_c (gs, '\n');
   }

   if (show_unicode)
   {
     serialize_line_no (line_no, gs);
     serialize (buffer, font, HB_BUFFER_SERIALIZE_FORMAT_TEXT, HB_BUFFER_SERIALIZE_FLAG_DEFAULT, gs);
     g_string_append_c (gs, '\n');
   }
 }
 inline void
 shape_format_options_t::serialize_message (unsigned int  line_no,
 					   const char   *type,
 					   const char   *msg,
 					   GString      *gs)
 {
   serialize_line_no (line_no, gs);
   g_string_append_printf (gs, "%s: %s", type, msg);
   g_string_append_c (gs, '\n');
 }
 inline void
 shape_format_options_t::serialize_buffer_of_glyphs (hb_buffer_t  *buffer,
 						    unsigned int  line_no,
 						    const char   *text,
 						    unsigned int  text_len,
 						    hb_font_t    *font,
 						    hb_buffer_serialize_format_t output_format,
 						    hb_buffer_serialize_flags_t format_flags,
 						    GString      *gs)
 {
   serialize_line_no (line_no, gs);
   serialize (buffer, font, output_format, format_flags, gs);
   g_string_append_c (gs, '\n');
 }


 void
 shape_format_options_t::add_options (option_parser_t *parser)
 {
   GOptionEntry entries[] =
   {
     {"show-text",	0, 0, G_OPTION_ARG_NONE,	&this->show_text,		"Prefix each line of output with its corresponding input text",		nullptr},
     {"show-unicode",	0, 0, G_OPTION_ARG_NONE,	&this->show_unicode,		"Prefix each line of output with its corresponding input codepoint(s)",	nullptr},
     {"show-line-num",	0, 0, G_OPTION_ARG_NONE,	&this->show_line_num,		"Prefix each line of output with its corresponding input line number",	nullptr},
     {"verbose",	      'v', G_OPTION_FLAG_NO_ARG,
 			      G_OPTION_ARG_CALLBACK,	(gpointer) &parse_verbose,	"Prefix each line of output with all of the above",			nullptr},
     {"no-glyph-names",	0, G_OPTION_FLAG_REVERSE,
 			      G_OPTION_ARG_NONE,	&this->show_glyph_names,	"Output glyph indices instead of names",				nullptr},
     {"no-positions",	0, G_OPTION_FLAG_REVERSE,
 			      G_OPTION_ARG_NONE,	&this->show_positions,		"Do not output glyph positions",					nullptr},
     {"no-advances",	0, G_OPTION_FLAG_REVERSE,
 			      G_OPTION_ARG_NONE,	&this->show_advances,		"Do not output glyph advances",						nullptr},
     {"no-clusters",	0, G_OPTION_FLAG_REVERSE,
 			      G_OPTION_ARG_NONE,	&this->show_clusters,		"Do not output cluster indices",					nullptr},
     {"show-extents",	0, 0, G_OPTION_ARG_NONE,	&this->show_extents,		"Output glyph extents",							nullptr},
     {"show-flags",	0, 0, G_OPTION_ARG_NONE,	&this->show_flags,		"Output glyph flags",							nullptr},
     {"ned",	      'v', G_OPTION_FLAG_NO_ARG,
 			      G_OPTION_ARG_CALLBACK,	(gpointer) &parse_ned,		"No Extra Data; Do not output clusters or advances",			nullptr},
     {"trace",	      'V', 0, G_OPTION_ARG_NONE,	&this->trace,			"Output interim shaping results",					nullptr},
     {nullptr}
   };
   parser->add_group (entries,
 		     "output-syntax",
 		     "Output syntax:\n"
 	 "    text: [<glyph name or index>=<glyph cluster index within input>@<horizontal displacement>,<vertical displacement>+<horizontal advance>,<vertical advance>|...]\n"
 	 "    json: [{\"g\": <glyph name or index>, \"ax\": <horizontal advance>, \"ay\": <vertical advance>, \"dx\": <horizontal displacement>, \"dy\": <vertical displacement>, \"cl\": <glyph cluster index within input>}, ...]\n"
 	 "\nOutput syntax options:",
 		     "Options for the syntax of the output",
 		     this);
 }

 #endif
	/*
	* Copyright © 2011 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 SHAPE_FORMAT_OPTIONS_HH
	#define SHAPE_FORMAT_OPTIONS_HH

	#include "options.hh"


	struct shape_format_options_t
	{
	void add_options (option_parser_t *parser);

	void serialize (hb_buffer_t *buffer,
	hb_font_t *font,
	hb_buffer_serialize_format_t format,
	hb_buffer_serialize_flags_t flags,
	GString *gs);
	void serialize_line_no (unsigned int line_no,
	GString *gs);
	void serialize_buffer_of_text (hb_buffer_t *buffer,
	unsigned int line_no,
	const char *text,
	unsigned int text_len,
	hb_font_t *font,
	GString *gs);
	void serialize_message (unsigned int line_no,
	const char *type,
	const char *msg,
	GString *gs);
	void serialize_buffer_of_glyphs (hb_buffer_t *buffer,
	unsigned int line_no,
	const char *text,
	unsigned int text_len,
	hb_font_t *font,
	hb_buffer_serialize_format_t output_format,
	hb_buffer_serialize_flags_t format_flags,
	GString *gs);


	hb_bool_t show_glyph_names = true;
	hb_bool_t show_positions = true;
	hb_bool_t show_advances = true;
	hb_bool_t show_clusters = true;
	hb_bool_t show_text = false;
	hb_bool_t show_unicode = false;
	hb_bool_t show_line_num = false;
	hb_bool_t show_extents = false;
	hb_bool_t show_flags = false;
	hb_bool_t trace = false;
	};


	static gboolean
	parse_verbose (const char *name G_GNUC_UNUSED,
	const char *arg G_GNUC_UNUSED,
	gpointer data G_GNUC_UNUSED,
	GError **error G_GNUC_UNUSED)
	{
	shape_format_options_t format_opts = (shape_format_options_t ) data;
	format_opts->show_text = format_opts->show_unicode = format_opts->show_line_num = true;
	return true;
	}

	static gboolean
	parse_ned (const char *name G_GNUC_UNUSED,
	const char *arg G_GNUC_UNUSED,
	gpointer data G_GNUC_UNUSED,
	GError **error G_GNUC_UNUSED)
	{
	shape_format_options_t format_opts = (shape_format_options_t ) data;
	format_opts->show_clusters = format_opts->show_advances = false;
	return true;
	}

	inline void
	shape_format_options_t::serialize (hb_buffer_t *buffer,
	hb_font_t *font,
	hb_buffer_serialize_format_t output_format,
	hb_buffer_serialize_flags_t flags,
	GString *gs)
	{
	unsigned int num_glyphs = hb_buffer_get_length (buffer);
	unsigned int start = 0;

	while (start < num_glyphs)
	{
	char buf[32768];
	unsigned int consumed;
	start += hb_buffer_serialize (buffer, start, num_glyphs,
	buf, sizeof (buf), &consumed,
	font, output_format, flags);
	if (!consumed)
	break;
	g_string_append (gs, buf);
	}
	}

	inline void
	shape_format_options_t::serialize_line_no (unsigned int line_no,
	GString *gs)
	{
	if (show_line_num)
	g_string_append_printf (gs, "%d: ", line_no);
	}
	inline void
	shape_format_options_t::serialize_buffer_of_text (hb_buffer_t *buffer,
	unsigned int line_no,
	const char *text,
	unsigned int text_len,
	hb_font_t *font,
	GString *gs)
	{
	if (show_text)
	{
	serialize_line_no (line_no, gs);
	g_string_append_c (gs, '(');
	g_string_append_len (gs, text, text_len);
	g_string_append_c (gs, ')');
	g_string_append_c (gs, '\n');
	}

	if (show_unicode)
	{
	serialize_line_no (line_no, gs);
	serialize (buffer, font, HB_BUFFER_SERIALIZE_FORMAT_TEXT, HB_BUFFER_SERIALIZE_FLAG_DEFAULT, gs);
	g_string_append_c (gs, '\n');
	}
	}
	inline void
	shape_format_options_t::serialize_message (unsigned int line_no,
	const char *type,
	const char *msg,
	GString *gs)
	{
	serialize_line_no (line_no, gs);
	g_string_append_printf (gs, "%s: %s", type, msg);
	g_string_append_c (gs, '\n');
	}
	inline void
	shape_format_options_t::serialize_buffer_of_glyphs (hb_buffer_t *buffer,
	unsigned int line_no,
	const char *text,
	unsigned int text_len,
	hb_font_t *font,
	hb_buffer_serialize_format_t output_format,
	hb_buffer_serialize_flags_t format_flags,
	GString *gs)
	{
	serialize_line_no (line_no, gs);
	serialize (buffer, font, output_format, format_flags, gs);
	g_string_append_c (gs, '\n');
	}


	void
	shape_format_options_t::add_options (option_parser_t *parser)
	{
	GOptionEntry entries[] =
	{
	{"show-text", 0, 0, G_OPTION_ARG_NONE, &this->show_text, "Prefix each line of output with its corresponding input text", nullptr},
	{"show-unicode", 0, 0, G_OPTION_ARG_NONE, &this->show_unicode, "Prefix each line of output with its corresponding input codepoint(s)", nullptr},
	{"show-line-num", 0, 0, G_OPTION_ARG_NONE, &this->show_line_num, "Prefix each line of output with its corresponding input line number", nullptr},
	{"verbose", 'v', G_OPTION_FLAG_NO_ARG,
	G_OPTION_ARG_CALLBACK, (gpointer) &parse_verbose, "Prefix each line of output with all of the above", nullptr},
	{"no-glyph-names", 0, G_OPTION_FLAG_REVERSE,
	G_OPTION_ARG_NONE, &this->show_glyph_names, "Output glyph indices instead of names", nullptr},
	{"no-positions", 0, G_OPTION_FLAG_REVERSE,
	G_OPTION_ARG_NONE, &this->show_positions, "Do not output glyph positions", nullptr},
	{"no-advances", 0, G_OPTION_FLAG_REVERSE,
	G_OPTION_ARG_NONE, &this->show_advances, "Do not output glyph advances", nullptr},
	{"no-clusters", 0, G_OPTION_FLAG_REVERSE,
	G_OPTION_ARG_NONE, &this->show_clusters, "Do not output cluster indices", nullptr},
	{"show-extents", 0, 0, G_OPTION_ARG_NONE, &this->show_extents, "Output glyph extents", nullptr},
	{"show-flags", 0, 0, G_OPTION_ARG_NONE, &this->show_flags, "Output glyph flags", nullptr},
	{"ned", 'v', G_OPTION_FLAG_NO_ARG,
	G_OPTION_ARG_CALLBACK, (gpointer) &parse_ned, "No Extra Data; Do not output clusters or advances", nullptr},
	{"trace", 'V', 0, G_OPTION_ARG_NONE, &this->trace, "Output interim shaping results", nullptr},
	{nullptr}
	};
	parser->add_group (entries,
	"output-syntax",
	"Output syntax:\n"
	" text: [<glyph name or index>=<glyph cluster index within input>@<horizontal displacement>,<vertical displacement>+<horizontal advance>,<vertical advance>\|...]\n"
	" json: [{\"g\": <glyph name or index>, \"ax\": <horizontal advance>, \"ay\": <vertical advance>, \"dx\": <horizontal displacement>, \"dy\": <vertical displacement>, \"cl\": <glyph cluster index within input>}, ...]\n"
	"\nOutput syntax options:",
	"Options for the syntax of the output",
	this);
	}

	#endif