Added a new function: AddNewEvent, which only adds an event to the list if it doesn't already exist. Kept the old one as it might me useful to be able to add an event more than once.
/***************************************************************************/
/* */
/* gxvmod.c */
/* */
/* FreeType's TrueTypeGX/AAT validation module implementation (body). */
/* */
/* Copyright 2004, 2005, 2006 */
/* by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */
/* 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. */
/* */
/***************************************************************************/
/***************************************************************************/
/* */
/* gxvalid is derived from both gxlayout module and otvalid module. */
/* Development of gxlayout is supported by the Information-technology */
/* Promotion Agency(IPA), Japan. */
/* */
/***************************************************************************/
#include <ft2build.h>
#include FT_TRUETYPE_TABLES_H
#include FT_TRUETYPE_TAGS_H
#include FT_GX_VALIDATE_H
#include FT_INTERNAL_OBJECTS_H
#include FT_SERVICE_GX_VALIDATE_H
#include "gxvmod.h"
#include "gxvalid.h"
#include "gxvcommn.h"
/*************************************************************************/
/* */
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
/* messages during execution. */
/* */
#undef FT_COMPONENT
#define FT_COMPONENT trace_gxvmodule
static FT_Error
gxv_load_table( FT_Face face,
FT_Tag tag,
FT_Byte* volatile* table,
FT_ULong* table_len )
{
FT_Error error;
FT_Memory memory = FT_FACE_MEMORY( face );
error = FT_Load_Sfnt_Table( face, tag, 0, NULL, table_len );
if ( error == GXV_Err_Table_Missing )
return GXV_Err_Ok;
if ( error )
goto Exit;
if ( FT_ALLOC( *table, *table_len ) )
goto Exit;
error = FT_Load_Sfnt_Table( face, tag, 0, *table, table_len );
Exit:
return error;
}
#define GXV_TABLE_DECL( _sfnt ) \
FT_Byte* volatile _sfnt = NULL; \
FT_ULong len_ ## _sfnt = 0
#define GXV_TABLE_LOAD( _sfnt ) \
if ( ( FT_VALIDATE_ ## _sfnt ## _INDEX < table_count ) && \
( gx_flags & FT_VALIDATE_ ## _sfnt ) ) \
{ \
error = gxv_load_table( face, TTAG_ ## _sfnt, \
&_sfnt, &len_ ## _sfnt ); \
if ( error ) \
goto Exit; \
}
#define GXV_TABLE_VALIDATE( _sfnt ) \
if ( _sfnt ) \
{ \
ft_validator_init( &valid, _sfnt, _sfnt + len_ ## _sfnt, \
FT_VALIDATE_DEFAULT ); \
if ( ft_setjmp( valid.jump_buffer ) == 0 ) \
gxv_ ## _sfnt ## _validate( _sfnt, face, &valid ); \
error = valid.error; \
if ( error ) \
goto Exit; \
}
#define GXV_TABLE_SET( _sfnt ) \
if ( FT_VALIDATE_ ## _sfnt ## _INDEX < table_count ) \
tables[FT_VALIDATE_ ## _sfnt ## _INDEX] = (FT_Bytes)_sfnt
static FT_Error
gxv_validate( FT_Face face,
FT_UInt gx_flags,
FT_Bytes tables[FT_VALIDATE_GX_LENGTH],
FT_UInt table_count )
{
FT_Memory volatile memory = FT_FACE_MEMORY( face );
FT_Error error = GXV_Err_Ok;
FT_ValidatorRec volatile valid;
FT_UInt i;
GXV_TABLE_DECL( feat );
GXV_TABLE_DECL( bsln );
GXV_TABLE_DECL( trak );
GXV_TABLE_DECL( just );
GXV_TABLE_DECL( mort );
GXV_TABLE_DECL( morx );
GXV_TABLE_DECL( kern );
GXV_TABLE_DECL( opbd );
GXV_TABLE_DECL( prop );
GXV_TABLE_DECL( lcar );
for ( i = 0; i < table_count; i++ )
tables[i] = 0;
/* load tables */
GXV_TABLE_LOAD( feat );
GXV_TABLE_LOAD( bsln );
GXV_TABLE_LOAD( trak );
GXV_TABLE_LOAD( just );
GXV_TABLE_LOAD( mort );
GXV_TABLE_LOAD( morx );
GXV_TABLE_LOAD( kern );
GXV_TABLE_LOAD( opbd );
GXV_TABLE_LOAD( prop );
GXV_TABLE_LOAD( lcar );
/* validate tables */
GXV_TABLE_VALIDATE( feat );
GXV_TABLE_VALIDATE( bsln );
GXV_TABLE_VALIDATE( trak );
GXV_TABLE_VALIDATE( just );
GXV_TABLE_VALIDATE( mort );
GXV_TABLE_VALIDATE( morx );
GXV_TABLE_VALIDATE( kern );
GXV_TABLE_VALIDATE( opbd );
GXV_TABLE_VALIDATE( prop );
GXV_TABLE_VALIDATE( lcar );
/* Set results */
GXV_TABLE_SET( feat );
GXV_TABLE_SET( mort );
GXV_TABLE_SET( morx );
GXV_TABLE_SET( bsln );
GXV_TABLE_SET( just );
GXV_TABLE_SET( kern );
GXV_TABLE_SET( opbd );
GXV_TABLE_SET( trak );
GXV_TABLE_SET( prop );
GXV_TABLE_SET( lcar );
Exit:
if ( error )
{
FT_FREE( feat );
FT_FREE( bsln );
FT_FREE( trak );
FT_FREE( just );
FT_FREE( mort );
FT_FREE( morx );
FT_FREE( kern );
FT_FREE( opbd );
FT_FREE( prop );
FT_FREE( lcar );
}
return error;
}
static FT_Error
classic_kern_validate( FT_Face face,
FT_UInt ckern_flags,
FT_Bytes* ckern_table )
{
FT_Memory volatile memory = FT_FACE_MEMORY( face );
FT_Byte* volatile ckern = NULL;
FT_ULong len_ckern = 0;
/* without volatile on `error' GCC 4.1.1. emits: */
/* warning: variable 'error' might be clobbered by 'longjmp' or 'vfork' */
/* this warning seems spurious but --- */
FT_Error volatile error = GXV_Err_Ok;
FT_ValidatorRec volatile valid;
*ckern_table = NULL;
error = gxv_load_table( face, TTAG_kern, &ckern, &len_ckern );
if ( error )
goto Exit;
if ( ckern )
{
ft_validator_init( &valid, ckern, ckern + len_ckern,
FT_VALIDATE_DEFAULT );
if ( ft_setjmp( valid.jump_buffer ) == 0 )
gxv_kern_validate_classic( ckern, face,
ckern_flags & FT_VALIDATE_CKERN, &valid );
error = valid.error;
if ( error )
goto Exit;
}
*ckern_table = ckern;
Exit:
if ( error )
FT_FREE( ckern );
return error;
}
static
const FT_Service_GXvalidateRec gxvalid_interface =
{
gxv_validate
};
static
const FT_Service_CKERNvalidateRec ckernvalid_interface =
{
classic_kern_validate
};
static
const FT_ServiceDescRec gxvalid_services[] =
{
{ FT_SERVICE_ID_GX_VALIDATE, &gxvalid_interface },
{ FT_SERVICE_ID_CLASSICKERN_VALIDATE, &ckernvalid_interface },
{ NULL, NULL }
};
static FT_Pointer
gxvalid_get_service( FT_Module module,
const char* service_id )
{
FT_UNUSED( module );
return ft_service_list_lookup( gxvalid_services, service_id );
}
FT_CALLBACK_TABLE_DEF
const FT_Module_Class gxv_module_class =
{
0,
sizeof( FT_ModuleRec ),
"gxvalid",
0x10000L,
0x20000L,
0, /* module-specific interface */
(FT_Module_Constructor)0,
(FT_Module_Destructor) 0,
(FT_Module_Requester) gxvalid_get_service
};
/* END */