--- a/misc/libfreetype/src/gxvalid/gxvmort1.c Thu Jul 25 23:16:06 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,258 +0,0 @@
-/***************************************************************************/
-/* */
-/* gxvmort1.c */
-/* */
-/* TrueTypeGX/AAT mort table validation */
-/* body for type1 (Contextual Substitution) subtable. */
-/* */
-/* Copyright 2005, 2007 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 "gxvmort.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_gxvmort
-
-
- typedef struct GXV_mort_subtable_type1_StateOptRec_
- {
- FT_UShort substitutionTable;
- FT_UShort substitutionTable_length;
-
- } GXV_mort_subtable_type1_StateOptRec,
- *GXV_mort_subtable_type1_StateOptRecData;
-
-#define GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE \
- ( GXV_STATETABLE_HEADER_SIZE + 2 )
-
-
- static void
- gxv_mort_subtable_type1_substitutionTable_load( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
-
- GXV_mort_subtable_type1_StateOptRecData optdata =
- (GXV_mort_subtable_type1_StateOptRecData)valid->statetable.optdata;
-
-
- GXV_LIMIT_CHECK( 2 );
- optdata->substitutionTable = FT_NEXT_USHORT( p );
- }
-
-
- static void
- gxv_mort_subtable_type1_subtable_setup( FT_UShort table_size,
- FT_UShort classTable,
- FT_UShort stateArray,
- FT_UShort entryTable,
- FT_UShort* classTable_length_p,
- FT_UShort* stateArray_length_p,
- FT_UShort* entryTable_length_p,
- GXV_Validator valid )
- {
- FT_UShort o[4];
- FT_UShort *l[4];
- FT_UShort buff[5];
-
- GXV_mort_subtable_type1_StateOptRecData optdata =
- (GXV_mort_subtable_type1_StateOptRecData)valid->statetable.optdata;
-
-
- o[0] = classTable;
- o[1] = stateArray;
- o[2] = entryTable;
- o[3] = optdata->substitutionTable;
- l[0] = classTable_length_p;
- l[1] = stateArray_length_p;
- l[2] = entryTable_length_p;
- l[3] = &( optdata->substitutionTable_length );
-
- gxv_set_length_by_ushort_offset( o, l, buff, 4, table_size, valid );
- }
-
-
- static void
- gxv_mort_subtable_type1_offset_to_subst_validate(
- FT_Short wordOffset,
- const FT_String* tag,
- FT_Byte state,
- GXV_Validator valid )
- {
- FT_UShort substTable;
- FT_UShort substTable_limit;
- FT_UShort min_gid;
- FT_UShort max_gid;
-
- FT_UNUSED( tag );
- FT_UNUSED( state );
-
-
- substTable =
- ((GXV_mort_subtable_type1_StateOptRec *)
- (valid->statetable.optdata))->substitutionTable;
- substTable_limit =
- (FT_UShort)( substTable +
- ((GXV_mort_subtable_type1_StateOptRec *)
- (valid->statetable.optdata))->substitutionTable_length );
-
- min_gid = (FT_UShort)( ( substTable - wordOffset * 2 ) / 2 );
- max_gid = (FT_UShort)( ( substTable_limit - wordOffset * 2 ) / 2 );
- max_gid = (FT_UShort)( FT_MAX( max_gid, valid->face->num_glyphs ) );
-
- /* XXX: check range? */
-
- /* TODO: min_gid & max_gid comparison with ClassTable contents */
- }
-
-
- static void
- gxv_mort_subtable_type1_entry_validate(
- FT_Byte state,
- FT_UShort flags,
- GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
- FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_UShort setMark;
- FT_UShort dontAdvance;
- FT_UShort reserved;
- FT_Short markOffset;
- FT_Short currentOffset;
-
- FT_UNUSED( table );
- FT_UNUSED( limit );
-
-
- setMark = (FT_UShort)( flags >> 15 );
- dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 );
- reserved = (FT_Short)( flags & 0x3FFF );
-
- markOffset = (FT_Short)( glyphOffset_p->ul >> 16 );
- currentOffset = (FT_Short)( glyphOffset_p->ul );
-
- if ( 0 < reserved )
- {
- GXV_TRACE(( " non-zero bits found in reserved range\n" ));
- if ( valid->root->level >= FT_VALIDATE_PARANOID )
- FT_INVALID_DATA;
- }
-
- gxv_mort_subtable_type1_offset_to_subst_validate( markOffset,
- "markOffset",
- state,
- valid );
-
- gxv_mort_subtable_type1_offset_to_subst_validate( currentOffset,
- "currentOffset",
- state,
- valid );
- }
-
-
- static void
- gxv_mort_subtable_type1_substTable_validate( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
- FT_UShort num_gids = (FT_UShort)(
- ((GXV_mort_subtable_type1_StateOptRec *)
- (valid->statetable.optdata))->substitutionTable_length / 2 );
- FT_UShort i;
-
-
- GXV_NAME_ENTER( "validating contents of substitutionTable" );
- for ( i = 0; i < num_gids ; i ++ )
- {
- FT_UShort dst_gid;
-
-
- GXV_LIMIT_CHECK( 2 );
- dst_gid = FT_NEXT_USHORT( p );
-
- if ( dst_gid >= 0xFFFFU )
- continue;
-
- if ( dst_gid > valid->face->num_glyphs )
- {
- GXV_TRACE(( "substTable include too large gid[%d]=%d >"
- " max defined gid #%d\n",
- i, dst_gid, valid->face->num_glyphs ));
- if ( valid->root->level >= FT_VALIDATE_PARANOID )
- FT_INVALID_GLYPH_ID;
- }
- }
-
- GXV_EXIT;
- }
-
-
- /*
- * subtable for Contextual glyph substitution is a modified StateTable.
- * In addition to classTable, stateArray, and entryTable, the field
- * `substitutionTable' is added.
- */
- FT_LOCAL_DEF( void )
- gxv_mort_subtable_type1_validate( FT_Bytes table,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = table;
-
- GXV_mort_subtable_type1_StateOptRec st_rec;
-
-
- GXV_NAME_ENTER( "mort chain subtable type1 (Contextual Glyph Subst)" );
-
- GXV_LIMIT_CHECK( GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE );
-
- valid->statetable.optdata =
- &st_rec;
- valid->statetable.optdata_load_func =
- gxv_mort_subtable_type1_substitutionTable_load;
- valid->statetable.subtable_setup_func =
- gxv_mort_subtable_type1_subtable_setup;
- valid->statetable.entry_glyphoffset_fmt =
- GXV_GLYPHOFFSET_ULONG;
- valid->statetable.entry_validate_func =
-
- gxv_mort_subtable_type1_entry_validate;
- gxv_StateTable_validate( p, limit, valid );
-
- gxv_mort_subtable_type1_substTable_validate(
- table + st_rec.substitutionTable,
- table + st_rec.substitutionTable + st_rec.substitutionTable_length,
- valid );
-
- GXV_EXIT;
- }
-
-
-/* END */