ref: fb009c7449875582fb2fedecf52931a5fbabff37
dir: /src/sfnt/sfdriver.c/
/***************************************************************************/
/* */
/* sfdriver.c */
/* */
/* High-level SFNT driver interface (body). */
/* */
/* Copyright 1996-2001 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 <ft2build.h>
#include FT_INTERNAL_SFNT_H
#include FT_INTERNAL_OBJECTS_H
#include "sfdriver.h"
#include "ttload.h"
#include "ttcmap.h"
#include "sfobjs.h"
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
#include "ttsbit.h"
#endif
#ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
#include "ttpost.h"
#endif
#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 = (FT_UInt)( strlen( gname ) );
if ( len >= buffer_max )
len = buffer_max - 1;
MEM_Copy( buffer, gname, len );
((FT_Byte*)buffer)[len] = 0;
}
return error;
}
static const char*
get_sfnt_postscript_name( TT_Face face )
{
FT_Int n;
/* shouldn't happen, but just in case to avoid memory leaks */
if ( face->root.internal->postscript_name )
return face->root.internal->postscript_name;
/* scan the name table to see if we have a Postscript name here, either */
/* in Macintosh or Windows platform encodings.. */
for ( n = 0; n < face->num_names; n++ )
{
TT_NameRec* name = face->name_table.names + n;
if ( name->nameID == 6 )
{
if ( ( name->platformID == 3 &&
name->encodingID == 1 &&
name->languageID == 0x409 ) ||
( name->platformID == 1 &&
name->encodingID == 0 &&
name->languageID == 0 ) )
{
FT_UInt len = name->stringLength;
FT_Error error;
FT_Memory memory = face->root.memory;
FT_String* result;
if ( !ALLOC( result, len + 1 ) )
{
memcpy( result, name->string, len );
result[len] = '\0';
face->root.internal->postscript_name = result;
}
return result;
}
}
}
return NULL;
}
#endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */
FT_CALLBACK_DEF( 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
if ( strcmp( interface, "postscript_name" ) == 0 )
return (FT_Module_Interface)get_sfnt_postscript_name;
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 `ttload.h' */
TT_Load_Bitmap_Header,
/* see `ttsbit.h' */
TT_Set_SBit_Strike,
TT_Load_SBit_Strikes,
TT_Load_SBit_Image,
TT_Free_SBit_Strikes,
#else /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
0,
0,
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,
};
FT_CALLBACK_TABLE_DEF
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 */