Added a new function: AddNewEvent, which only adds an event to the list if it doesn't already exist. Kept the old one as it might me useful to be able to add an event more than once.
/***************************************************************************/
/* */
/* gxvmorx5.c */
/* */
/* TrueTypeGX/AAT morx table validation */
/* body for type5 (Contextual Glyph Insertion) 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 "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
/*
* `morx' subtable type5 (Contextual Glyph Insertion)
* has format of a StateTable with insertion-glyph-list
* without name. However, the 32bit offset from the head
* of subtable to the i-g-l is given after `entryTable',
* without variable name specification (the existence of
* this offset to the table is different from mort type5).
*/
typedef struct GXV_morx_subtable_type5_StateOptRec_
{
FT_ULong insertionGlyphList;
FT_ULong insertionGlyphList_length;
} GXV_morx_subtable_type5_StateOptRec,
*GXV_morx_subtable_type5_StateOptRecData;
#define GXV_MORX_SUBTABLE_TYPE5_HEADER_SIZE \
( GXV_STATETABLE_HEADER_SIZE + 4 )
static void
gxv_morx_subtable_type5_insertionGlyphList_load( FT_Bytes table,
FT_Bytes limit,
GXV_Validator valid )
{
FT_Bytes p = table;
GXV_morx_subtable_type5_StateOptRecData optdata =
(GXV_morx_subtable_type5_StateOptRecData)valid->xstatetable.optdata;
GXV_LIMIT_CHECK( 4 );
optdata->insertionGlyphList = FT_NEXT_ULONG( p );
}
static void
gxv_morx_subtable_type5_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[4];
FT_ULong* l[4];
FT_ULong buff[5];
GXV_morx_subtable_type5_StateOptRecData optdata =
(GXV_morx_subtable_type5_StateOptRecData)valid->xstatetable.optdata;
o[0] = classTable;
o[1] = stateArray;
o[2] = entryTable;
o[3] = optdata->insertionGlyphList;
l[0] = classTable_length_p;
l[1] = stateArray_length_p;
l[2] = entryTable_length_p;
l[3] = &(optdata->insertionGlyphList_length);
gxv_set_length_by_ulong_offset( o, l, buff, 4, table_size, valid );
}
static void
gxv_morx_subtable_type5_InsertList_validate( FT_UShort table_index,
FT_UShort count,
FT_Bytes table,
FT_Bytes limit,
GXV_Validator valid )
{
FT_Bytes p = table + table_index * 2;
while ( p < table + count * 2 + table_index * 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_morx_subtable_type5_entry_validate(
FT_UShort state,
FT_UShort flags,
GXV_StateTable_GlyphOffsetCPtr glyphOffset_p,
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_Byte 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_Byte) ( glyphOffset_p->ul >> 16 );
markedInsertList = (FT_UShort)( glyphOffset_p->ul );
if ( currentInsertList && 0 != currentInsertCount )
gxv_morx_subtable_type5_InsertList_validate( currentInsertList,
currentInsertCount,
table, limit,
valid );
if ( markedInsertList && 0 != markedInsertCount )
gxv_morx_subtable_type5_InsertList_validate( markedInsertList,
markedInsertCount,
table, limit,
valid );
}
FT_LOCAL_DEF( void )
gxv_morx_subtable_type5_validate( FT_Bytes table,
FT_Bytes limit,
GXV_Validator valid )
{
FT_Bytes p = table;
GXV_morx_subtable_type5_StateOptRec et_rec;
GXV_morx_subtable_type5_StateOptRecData et = &et_rec;
GXV_NAME_ENTER( "morx chain subtable type5 (Glyph Insertion)" );
GXV_LIMIT_CHECK( GXV_MORX_SUBTABLE_TYPE5_HEADER_SIZE );
valid->xstatetable.optdata =
et;
valid->xstatetable.optdata_load_func =
gxv_morx_subtable_type5_insertionGlyphList_load;
valid->xstatetable.subtable_setup_func =
gxv_morx_subtable_type5_subtable_setup;
valid->xstatetable.entry_glyphoffset_fmt =
GXV_GLYPHOFFSET_ULONG;
valid->xstatetable.entry_validate_func =
gxv_morx_subtable_type5_entry_validate;
gxv_XStateTable_validate( p, limit, valid );
GXV_EXIT;
}
/* END */