otv_GSUB_validate( FT_Bytes table,
FT_UInt glyph_count,
FT_Validator ftvalid )
{
OTV_ValidatorRec otvalidrec;
OTV_Validator otvalid = &otvalidrec;
FT_Bytes p = table;
FT_UInt ScriptList, FeatureList, LookupList;
otvalid->root = ftvalid;
FT_TRACE3(( "validating GSUB table\n" ));
OTV_INIT;
OTV_LIMIT_CHECK( 10 );
if ( FT_NEXT_ULONG( p ) != 0x10000UL ) /* Version */
FT_INVALID_FORMAT;
ScriptList = FT_NEXT_USHORT( p );
FeatureList = FT_NEXT_USHORT( p );
LookupList = FT_NEXT_USHORT( p );
otvalid->type_count = 8;
otvalid->type_funcs = (OTV_Validate_Func*)otv_gsub_validate_funcs;
otvalid->glyph_count = glyph_count;
otv_LookupList_validate( table + LookupList,
otvalid );
otv_FeatureList_validate( table + FeatureList, table + LookupList,
otvalid );
otv_ScriptList_validate( table + ScriptList, table + FeatureList,
otvalid );
FT_TRACE4(( "\n" ));
}
otv_GSUB_validate( FT_Bytes table,
FT_UInt glyph_count,
FT_Validator ftvalid )
{
OTV_ValidatorRec otvalidrec;
OTV_Validator otvalid = &otvalidrec;
FT_Bytes p = table;
FT_UInt table_size;
FT_UShort version;
FT_UInt ScriptList, FeatureList, LookupList;
OTV_OPTIONAL_TABLE32( featureVariations );
otvalid->root = ftvalid;
FT_TRACE3(( "validating GSUB table\n" ));
OTV_INIT;
OTV_LIMIT_CHECK( 4 );
if ( FT_NEXT_USHORT( p ) != 1 ) /* majorVersion */
FT_INVALID_FORMAT;
version = FT_NEXT_USHORT( p ); /* minorVersion */
table_size = 10;
switch ( version )
{
case 0:
OTV_LIMIT_CHECK( 6 );
break;
case 1:
OTV_LIMIT_CHECK( 10 );
table_size += 4;
break;
default:
FT_INVALID_FORMAT;
}
ScriptList = FT_NEXT_USHORT( p );
FeatureList = FT_NEXT_USHORT( p );
LookupList = FT_NEXT_USHORT( p );
otvalid->type_count = 8;
otvalid->type_funcs = (OTV_Validate_Func*)otv_gsub_validate_funcs;
otvalid->glyph_count = glyph_count;
otv_LookupList_validate( table + LookupList,
otvalid );
otv_FeatureList_validate( table + FeatureList, table + LookupList,
otvalid );
otv_ScriptList_validate( table + ScriptList, table + FeatureList,
otvalid );
if ( version > 0 )
{
OTV_OPTIONAL_OFFSET32( featureVariations );
OTV_SIZE_CHECK32( featureVariations );
if ( featureVariations )
OTV_TRACE(( " [omitting featureVariations validation]\n" )); /* XXX */
}
FT_TRACE4(( "\n" ));
}