Source code
Revision control
Copy as Markdown
Other Tools
/****************************************************************************
*
* gxvmorx0.c
*
* TrueTypeGX/AAT morx table validation
* body for type0 (Indic Script Rearrangement) subtable.
*
* Copyright (C) 2005-2024 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 "gxvmorx.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 gxvmorx
static void
gxv_morx_subtable_type0_entry_validate(
FT_UShort state,
FT_UShort flags,
GXV_XStateTable_GlyphOffsetCPtr glyphOffset_p,
FT_Bytes table,
FT_Bytes limit,
GXV_Validator gxvalid )
{
#ifdef GXV_LOAD_UNUSED_VARS
FT_UShort markFirst;
FT_UShort dontAdvance;
FT_UShort markLast;
#endif
FT_UShort reserved;
#ifdef GXV_LOAD_UNUSED_VARS
FT_UShort verb;
#endif
FT_UNUSED( state );
FT_UNUSED( glyphOffset_p );
FT_UNUSED( table );
FT_UNUSED( limit );
#ifdef GXV_LOAD_UNUSED_VARS
markFirst = (FT_UShort)( ( flags >> 15 ) & 1 );
dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 );
markLast = (FT_UShort)( ( flags >> 13 ) & 1 );
#endif
reserved = (FT_UShort)( flags & 0x1FF0 );
#ifdef GXV_LOAD_UNUSED_VARS
verb = (FT_UShort)( flags & 0x000F );
#endif
if ( 0 < reserved )
{
GXV_TRACE(( " non-zero bits found in reserved range\n" ));
FT_INVALID_DATA;
}
}
FT_LOCAL_DEF( void )
gxv_morx_subtable_type0_validate( FT_Bytes table,
FT_Bytes limit,
GXV_Validator gxvalid )
{
FT_Bytes p = table;
GXV_NAME_ENTER(
"morx chain subtable type0 (Indic-Script Rearrangement)" );
GXV_LIMIT_CHECK( GXV_STATETABLE_HEADER_SIZE );
gxvalid->xstatetable.optdata = NULL;
gxvalid->xstatetable.optdata_load_func = NULL;
gxvalid->xstatetable.subtable_setup_func = NULL;
gxvalid->xstatetable.entry_glyphoffset_fmt = GXV_GLYPHOFFSET_NONE;
gxvalid->xstatetable.entry_validate_func =
gxv_morx_subtable_type0_entry_validate;
gxv_XStateTable_validate( p, limit, gxvalid );
GXV_EXIT;
}
/* END */