--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libfreetype/src/gxvalid/gxvmort5.c Mon Apr 25 01:46:54 2011 +0200
@@ -0,0 +1,226 @@
+/***************************************************************************/
+/* */
+/* gxvmort5.c */
+/* */
+/* TrueTypeGX/AAT mort table validation */
+/* body for type5 (Contextual Glyph Insertion) 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 "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
+
+
+ /*
+ * mort subtable type5 (Contextual Glyph Insertion)
+ * has the format of StateTable with insertion-glyph-list,
+ * but without name. The offset is given by glyphOffset in
+ * entryTable. There is no table location declaration
+ * like xxxTable.
+ */
+
+ typedef struct GXV_mort_subtable_type5_StateOptRec_
+ {
+ FT_UShort classTable;
+ FT_UShort stateArray;
+ FT_UShort entryTable;
+
+#define GXV_MORT_SUBTABLE_TYPE5_HEADER_SIZE GXV_STATETABLE_HEADER_SIZE
+
+ FT_UShort* classTable_length_p;
+ FT_UShort* stateArray_length_p;
+ FT_UShort* entryTable_length_p;
+
+ } GXV_mort_subtable_type5_StateOptRec,
+ *GXV_mort_subtable_type5_StateOptRecData;
+
+
+ FT_LOCAL_DEF( void )
+ gxv_mort_subtable_type5_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 )
+ {
+ GXV_mort_subtable_type5_StateOptRecData optdata =
+ (GXV_mort_subtable_type5_StateOptRecData)valid->statetable.optdata;
+
+
+ gxv_StateTable_subtable_setup( table_size,
+ classTable,
+ stateArray,
+ entryTable,
+ classTable_length_p,
+ stateArray_length_p,
+ entryTable_length_p,
+ valid );
+
+ optdata->classTable = classTable;
+ optdata->stateArray = stateArray;
+ optdata->entryTable = entryTable;
+
+ optdata->classTable_length_p = classTable_length_p;
+ optdata->stateArray_length_p = stateArray_length_p;
+ optdata->entryTable_length_p = entryTable_length_p;
+ }
+
+
+ static void
+ gxv_mort_subtable_type5_InsertList_validate( FT_UShort offset,
+ FT_UShort count,
+ FT_Bytes table,
+ FT_Bytes limit,
+ GXV_Validator valid )
+ {
+ /*
+ * We don't know the range of insertion-glyph-list.
+ * Set range by whole of state table.
+ */
+ FT_Bytes p = table + offset;
+
+ GXV_mort_subtable_type5_StateOptRecData optdata =
+ (GXV_mort_subtable_type5_StateOptRecData)valid->statetable.optdata;
+
+ if ( optdata->classTable < offset &&
+ offset < optdata->classTable + *(optdata->classTable_length_p) )
+ GXV_TRACE(( " offset runs into ClassTable" ));
+ if ( optdata->stateArray < offset &&
+ offset < optdata->stateArray + *(optdata->stateArray_length_p) )
+ GXV_TRACE(( " offset runs into StateArray" ));
+ if ( optdata->entryTable < offset &&
+ offset < optdata->entryTable + *(optdata->entryTable_length_p) )
+ GXV_TRACE(( " offset runs into EntryTable" ));
+
+ while ( p < table + offset + ( count * 2 ) )
+ {
+ FT_UShort insert_glyphID;
+
+
+ GXV_LIMIT_CHECK( 2 );
+ insert_glyphID = FT_NEXT_USHORT( p );
+ GXV_TRACE(( " 0x%04x", insert_glyphID ));
+ }
+
+ GXV_TRACE(( "\n" ));
+ }
+
+
+ static void
+ gxv_mort_subtable_type5_entry_validate(
+ FT_Byte state,
+ FT_UShort flags,
+ GXV_StateTable_GlyphOffsetCPtr glyphOffset,
+ FT_Bytes table,
+ FT_Bytes limit,
+ GXV_Validator valid )
+ {
+ FT_Bool setMark;
+ FT_Bool dontAdvance;
+ FT_Bool currentIsKashidaLike;
+ FT_Bool markedIsKashidaLike;
+ FT_Bool currentInsertBefore;
+ FT_Bool markedInsertBefore;
+ FT_Byte currentInsertCount;
+ FT_Byte markedInsertCount;
+ FT_UShort currentInsertList;
+ FT_UShort markedInsertList;
+
+ FT_UNUSED( state );
+
+
+ setMark = FT_BOOL( ( flags >> 15 ) & 1 );
+ dontAdvance = FT_BOOL( ( flags >> 14 ) & 1 );
+ currentIsKashidaLike = FT_BOOL( ( flags >> 13 ) & 1 );
+ markedIsKashidaLike = FT_BOOL( ( flags >> 12 ) & 1 );
+ currentInsertBefore = FT_BOOL( ( flags >> 11 ) & 1 );
+ markedInsertBefore = FT_BOOL( ( flags >> 10 ) & 1 );
+
+ currentInsertCount = (FT_Byte)( ( flags >> 5 ) & 0x1F );
+ markedInsertCount = (FT_Byte)( flags & 0x001F );
+
+ currentInsertList = (FT_UShort)( glyphOffset->ul >> 16 );
+ markedInsertList = (FT_UShort)( glyphOffset->ul );
+
+ if ( 0 != currentInsertList && 0 != currentInsertCount )
+ {
+ gxv_mort_subtable_type5_InsertList_validate( currentInsertList,
+ currentInsertCount,
+ table,
+ limit,
+ valid );
+ }
+
+ if ( 0 != markedInsertList && 0 != markedInsertCount )
+ {
+ gxv_mort_subtable_type5_InsertList_validate( markedInsertList,
+ markedInsertCount,
+ table,
+ limit,
+ valid );
+ }
+ }
+
+
+ FT_LOCAL_DEF( void )
+ gxv_mort_subtable_type5_validate( FT_Bytes table,
+ FT_Bytes limit,
+ GXV_Validator valid )
+ {
+ FT_Bytes p = table;
+
+ GXV_mort_subtable_type5_StateOptRec et_rec;
+ GXV_mort_subtable_type5_StateOptRecData et = &et_rec;
+
+
+ GXV_NAME_ENTER( "mort chain subtable type5 (Glyph Insertion)" );
+
+ GXV_LIMIT_CHECK( GXV_MORT_SUBTABLE_TYPE5_HEADER_SIZE );
+
+ valid->statetable.optdata =
+ et;
+ valid->statetable.optdata_load_func =
+ NULL;
+ valid->statetable.subtable_setup_func =
+ gxv_mort_subtable_type5_subtable_setup;
+ valid->statetable.entry_glyphoffset_fmt =
+ GXV_GLYPHOFFSET_ULONG;
+ valid->statetable.entry_validate_func =
+ gxv_mort_subtable_type5_entry_validate;
+
+ gxv_StateTable_validate( p, limit, valid );
+
+ GXV_EXIT;
+ }
+
+
+/* END */