--- a/misc/libfreetype/src/gxvalid/gxvmorx2.c Fri Oct 11 11:55:31 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,285 +0,0 @@
-/***************************************************************************/
-/* */
-/* gxvmorx2.c */
-/* */
-/* TrueTypeGX/AAT morx table validation */
-/* body for type2 (Ligature Substitution) subtable. */
-/* */
-/* Copyright 2005 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 trace_gxvmorx
-
-
- typedef struct GXV_morx_subtable_type2_StateOptRec_
- {
- FT_ULong ligActionTable;
- FT_ULong componentTable;
- FT_ULong ligatureTable;
- FT_ULong ligActionTable_length;
- FT_ULong componentTable_length;
- FT_ULong ligatureTable_length;
-
- } GXV_morx_subtable_type2_StateOptRec,
- *GXV_morx_subtable_type2_StateOptRecData;
-
-
-#define GXV_MORX_SUBTABLE_TYPE2_HEADER_SIZE \
- ( GXV_XSTATETABLE_HEADER_SIZE + 4 + 4 + 4 )
-
-
- static void
- gxv_morx_subtable_type2_opttable_load( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
-
- GXV_morx_subtable_type2_StateOptRecData optdata =
- (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata;
-
-
- GXV_LIMIT_CHECK( 4 + 4 + 4 );
- optdata->ligActionTable = FT_NEXT_ULONG( p );
- optdata->componentTable = FT_NEXT_ULONG( p );
- optdata->ligatureTable = FT_NEXT_ULONG( p );
-
- GXV_TRACE(( "offset to ligActionTable=0x%08x\n",
- optdata->ligActionTable ));
- GXV_TRACE(( "offset to componentTable=0x%08x\n",
- optdata->componentTable ));
- GXV_TRACE(( "offset to ligatureTable=0x%08x\n",
- optdata->ligatureTable ));
- }
-
-
- static void
- gxv_morx_subtable_type2_subtable_setup( FT_ULong table_size,
- FT_ULong classTable,
- FT_ULong stateArray,
- FT_ULong entryTable,
- FT_ULong* classTable_length_p,
- FT_ULong* stateArray_length_p,
- FT_ULong* entryTable_length_p,
- GXV_Validator valid )
- {
- FT_ULong o[6];
- FT_ULong* l[6];
- FT_ULong buff[7];
-
- GXV_morx_subtable_type2_StateOptRecData optdata =
- (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata;
-
-
- GXV_NAME_ENTER( "subtable boundaries setup" );
-
- o[0] = classTable;
- o[1] = stateArray;
- o[2] = entryTable;
- o[3] = optdata->ligActionTable;
- o[4] = optdata->componentTable;
- o[5] = optdata->ligatureTable;
- l[0] = classTable_length_p;
- l[1] = stateArray_length_p;
- l[2] = entryTable_length_p;
- l[3] = &(optdata->ligActionTable_length);
- l[4] = &(optdata->componentTable_length);
- l[5] = &(optdata->ligatureTable_length);
-
- gxv_set_length_by_ulong_offset( o, l, buff, 6, table_size, valid );
-
- GXV_TRACE(( "classTable: offset=0x%08x length=0x%08x\n",
- classTable, *classTable_length_p ));
- GXV_TRACE(( "stateArray: offset=0x%08x length=0x%08x\n",
- stateArray, *stateArray_length_p ));
- GXV_TRACE(( "entryTable: offset=0x%08x length=0x%08x\n",
- entryTable, *entryTable_length_p ));
- GXV_TRACE(( "ligActionTable: offset=0x%08x length=0x%08x\n",
- optdata->ligActionTable,
- optdata->ligActionTable_length ));
- GXV_TRACE(( "componentTable: offset=0x%08x length=0x%08x\n",
- optdata->componentTable,
- optdata->componentTable_length ));
- GXV_TRACE(( "ligatureTable: offset=0x%08x length=0x%08x\n",
- optdata->ligatureTable,
- optdata->ligatureTable_length ));
-
- GXV_EXIT;
- }
-
-
-#define GXV_MORX_LIGACTION_ENTRY_SIZE 4
-
-
- static void
- gxv_morx_subtable_type2_ligActionIndex_validate(
- FT_Bytes table,
- FT_UShort ligActionIndex,
- GXV_Validator valid )
- {
- /* access ligActionTable */
- GXV_morx_subtable_type2_StateOptRecData optdata =
- (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata;
-
- FT_Bytes lat_base = table + optdata->ligActionTable;
- FT_Bytes p = lat_base +
- ligActionIndex * GXV_MORX_LIGACTION_ENTRY_SIZE;
- FT_Bytes lat_limit = lat_base + optdata->ligActionTable;
-
-
- if ( p < lat_base )
- {
- GXV_TRACE(( "p < lat_base (%d byte rewind)\n", lat_base - p ));
- FT_INVALID_OFFSET;
- }
- else if ( lat_limit < p )
- {
- GXV_TRACE(( "lat_limit < p (%d byte overrun)\n", p - lat_limit ));
- FT_INVALID_OFFSET;
- }
-
- {
- /* validate entry in ligActionTable */
- FT_ULong lig_action;
- FT_UShort last;
- FT_UShort store;
- FT_ULong offset;
-
-
- lig_action = FT_NEXT_ULONG( p );
- last = (FT_UShort)( ( lig_action >> 31 ) & 1 );
- store = (FT_UShort)( ( lig_action >> 30 ) & 1 );
-
- offset = lig_action & 0x3FFFFFFFUL;
- }
- }
-
-
- static void
- gxv_morx_subtable_type2_entry_validate(
- FT_UShort state,
- FT_UShort flags,
- GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
- FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_UShort setComponent;
- FT_UShort dontAdvance;
- FT_UShort performAction;
- FT_UShort reserved;
- FT_UShort ligActionIndex;
-
- FT_UNUSED( state );
- FT_UNUSED( limit );
-
-
- setComponent = (FT_UShort)( ( flags >> 15 ) & 1 );
- dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 );
- performAction = (FT_UShort)( ( flags >> 13 ) & 1 );
-
- reserved = (FT_UShort)( flags & 0x1FFF );
- ligActionIndex = glyphOffset_p->u;
-
- if ( reserved > 0 )
- GXV_TRACE(( " reserved 14bit is non-zero\n" ));
-
- if ( 0 < ligActionIndex )
- gxv_morx_subtable_type2_ligActionIndex_validate(
- table, ligActionIndex, valid );
- }
-
-
- static void
- gxv_morx_subtable_type2_ligatureTable_validate( FT_Bytes table,
- GXV_Validator valid )
- {
- GXV_morx_subtable_type2_StateOptRecData optdata =
- (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata;
-
- FT_Bytes p = table + optdata->ligatureTable;
- FT_Bytes limit = table + optdata->ligatureTable
- + optdata->ligatureTable_length;
-
-
- GXV_NAME_ENTER( "morx chain subtable type2 - substitutionTable" );
-
- if ( 0 != optdata->ligatureTable )
- {
- /* Apple does not give specification of ligatureTable format */
- while ( p < limit )
- {
- FT_UShort lig_gid;
-
-
- GXV_LIMIT_CHECK( 2 );
- lig_gid = FT_NEXT_USHORT( p );
- }
- }
-
- GXV_EXIT;
- }
-
-
- FT_LOCAL_DEF( void )
- gxv_morx_subtable_type2_validate( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
-
- GXV_morx_subtable_type2_StateOptRec lig_rec;
-
-
- GXV_NAME_ENTER( "morx chain subtable type2 (Ligature Substitution)" );
-
- GXV_LIMIT_CHECK( GXV_MORX_SUBTABLE_TYPE2_HEADER_SIZE );
-
- valid->xstatetable.optdata =
- &lig_rec;
- valid->xstatetable.optdata_load_func =
- gxv_morx_subtable_type2_opttable_load;
- valid->xstatetable.subtable_setup_func =
- gxv_morx_subtable_type2_subtable_setup;
- valid->xstatetable.entry_glyphoffset_fmt =
- GXV_GLYPHOFFSET_USHORT;
- valid->xstatetable.entry_validate_func =
- gxv_morx_subtable_type2_entry_validate;
-
- gxv_XStateTable_validate( p, limit, valid );
-
- p += valid->subtable_length;
- gxv_morx_subtable_type2_ligatureTable_validate( table, valid );
-
- GXV_EXIT;
- }
-
-
-/* END */