/***************************************************************************/
/*                                                                         */
/*  sfdriver.c                                                             */
/*                                                                         */
/*    High-level SFNT driver interface (body).                             */
/*                                                                         */
/*  Copyright 1996-2000 by                                                 */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#include "sfnt.h"
#include "ftobjs.h"



#include "sfdriver.h"
#include "ttload.h"
#include "ttsbit.h"
#include "ttpost.h"
#include "ttcmap.h"
#include "sfobjs.h"

#include <string.h>     /* for strcmp() */


static
void*  get_sfnt_table( TT_Face face,
					   FT_Sfnt_Tag tag ) {
	void*  table;


	switch ( tag )
	{
	case ft_sfnt_head:
		table = &face->header;
		break;

	case ft_sfnt_hhea:
		table = &face->horizontal;
		break;

	case ft_sfnt_vhea:
		table = face->vertical_info ? &face->vertical : 0;
		break;

	case ft_sfnt_os2:
		table = face->os2.version == 0xFFFF ? 0 : &face->os2;
		break;

	case ft_sfnt_post:
		table = &face->postscript;
		break;

	case ft_sfnt_maxp:
		table = &face->max_profile;
		break;

	case ft_sfnt_pclt:
		table = face->pclt.Version ? &face->pclt : 0;
		break;

	default:
		table = 0;
	}

	return table;
}


#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES


static
FT_Error  get_sfnt_glyph_name( TT_Face face,
							   FT_UInt glyph_index,
							   FT_Pointer buffer,
							   FT_UInt buffer_max ) {
	FT_String*  gname;
	FT_Error error;


	error = TT_Get_PS_Name( face, glyph_index, &gname );
	if ( !error && buffer_max > 0 ) {
		FT_UInt len = strlen( gname );


		if ( len >= buffer_max ) {
			len = buffer_max - 1;
		}

		MEM_Copy( buffer, gname, len );
		( (FT_Byte*)buffer )[len] = 0;
	}

	return error;
}


#endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */


static
FT_Module_Interface  SFNT_Get_Interface( FT_Module module,
										 const char*  interface ) {
	FT_UNUSED( module );

	if ( strcmp( interface, "get_sfnt" ) == 0 ) {
		return (FT_Module_Interface)get_sfnt_table;
	}

#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
	if ( strcmp( interface, "glyph_name" ) == 0 ) {
		return (FT_Module_Interface)get_sfnt_glyph_name;
	}
#endif
	return 0;
}


static
const SFNT_Interface sfnt_interface =
{
	TT_Goto_Table,

	SFNT_Init_Face,
	SFNT_Load_Face,
	SFNT_Done_Face,
	SFNT_Get_Interface,

	TT_Load_Any,
	TT_Load_SFNT_Header,
	TT_Load_Directory,

	TT_Load_Header,
	TT_Load_Metrics_Header,
	TT_Load_CMap,
	TT_Load_MaxProfile,
	TT_Load_OS2,
	TT_Load_PostScript,

	TT_Load_Names,
	TT_Free_Names,

	TT_Load_Hdmx,
	TT_Free_Hdmx,

	TT_Load_Kern,
	TT_Load_Gasp,
	TT_Load_PCLT,

#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS

	/* see `ttsbit.h' */
	TT_Load_SBit_Strikes,
	TT_Load_SBit_Image,
	TT_Free_SBit_Strikes,

#else /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

	0,
	0,
	0,

#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES

	/* see `ttpost.h' */
	TT_Get_PS_Name,
	TT_Free_Post_Names,

#else /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */

	0,
	0,

#endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */

	/* see `ttcmap.h' */
	TT_CharMap_Load,
	TT_CharMap_Free,
};


const
FT_Module_Class sfnt_module_class =
{
	0,  /* not a font driver or renderer */
	sizeof( FT_ModuleRec ),

	"sfnt",     /* driver name                            */
	0x10000L,   /* driver version 1.0                     */
	0x20000L,   /* driver requires FreeType 2.0 or higher */

	(const void*)&sfnt_interface,  /* module specific interface */

	(FT_Module_Constructor)0,
	(FT_Module_Destructor) 0,
	(FT_Module_Requester)  SFNT_Get_Interface
};


/* END */
