static void
otv_JstfScript_validate( FT_Bytes table,
OTV_Validator valid )
{
FT_Bytes p = table;
FT_UInt table_size;
FT_UInt JstfLangSysCount;
OTV_OPTIONAL_TABLE( ExtGlyph );
OTV_OPTIONAL_TABLE( DefJstfLangSys );
OTV_NAME_ENTER( "JstfScript" );
OTV_LIMIT_CHECK( 6 );
OTV_OPTIONAL_OFFSET( ExtGlyph );
OTV_OPTIONAL_OFFSET( DefJstfLangSys );
JstfLangSysCount = FT_NEXT_USHORT( p );
OTV_TRACE(( " (JstfLangSysCount = %d)\n", JstfLangSysCount ));
table_size = JstfLangSysCount * 6 + 6;
OTV_SIZE_CHECK( ExtGlyph );
if ( ExtGlyph )
{
valid->extra1 = valid->glyph_count;
OTV_NEST1( ExtenderGlyph );
OTV_RUN( table + ExtGlyph, valid );
}
OTV_SIZE_CHECK( DefJstfLangSys );
if ( DefJstfLangSys )
{
OTV_NEST2( JstfLangSys, JstfPriority );
OTV_RUN( table + DefJstfLangSys, valid );
}
OTV_LIMIT_CHECK( 6 * JstfLangSysCount );
/* JstfLangSysRecord */
OTV_NEST2( JstfLangSys, JstfPriority );
for ( ; JstfLangSysCount > 0; JstfLangSysCount-- )
{
p += 4; /* skip JstfLangSysTag */
OTV_RUN( table + FT_NEXT_USHORT( p ), valid );
}
OTV_EXIT;
}
static void
otv_ChainContextSubst_validate( FT_Bytes table,
OTV_Validator otvalid )
{
FT_Bytes p = table;
FT_UInt SubstFormat;
OTV_NAME_ENTER( "ChainContextSubst" );
OTV_LIMIT_CHECK( 2 );
SubstFormat = FT_NEXT_USHORT( p );
OTV_TRACE(( " (format %d)\n", SubstFormat ));
switch ( SubstFormat )
{
case 1:
/* no need to check glyph indices/classes used as input for these */
/* context rules since even invalid glyph indices/classes return */
/* meaningful results */
otvalid->extra1 = otvalid->lookup_count;
OTV_NEST3( ChainContextSubstFormat1,
ChainSubRuleSet, ChainSubRule );
OTV_RUN( table, otvalid );
break;
case 2:
/* no need to check glyph indices/classes used as input for these */
/* context rules since even invalid glyph indices/classes return */
/* meaningful results */
OTV_NEST3( ChainContextSubstFormat2,
ChainSubClassSet, ChainSubClassRule );
OTV_RUN( table, otvalid );
break;
case 3:
OTV_NEST1( ChainContextSubstFormat3 );
OTV_RUN( table, otvalid );
break;
default:
FT_INVALID_FORMAT;
}
OTV_EXIT;
}
