?? otvcommn.h
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/***************************************************************************/
/* */
/* otvcommn.h */
/* */
/* OpenType common tables validation (specification). */
/* */
/* Copyright 2004, 2005 by */
/* 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. */
/* */
/***************************************************************************/
#ifndef __OTVCOMMN_H__
#define __OTVCOMMN_H__
#include <ft2build.h>
#include "otvalid.h"
#include FT_INTERNAL_DEBUG_H
FT_BEGIN_HEADER
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** VALIDATION *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
typedef struct OTV_ValidatorRec_* OTV_Validator;
typedef void (*OTV_Validate_Func)( FT_Bytes table,
OTV_Validator valid );
typedef struct OTV_ValidatorRec_
{
FT_Validator root;
FT_UInt type_count;
OTV_Validate_Func* type_funcs;
FT_UInt lookup_count;
FT_UInt glyph_count;
FT_UInt nesting_level;
OTV_Validate_Func func[3];
FT_UInt extra1; /* for passing parameters */
FT_UInt extra2;
FT_Bytes extra3;
#ifdef FT_DEBUG_LEVEL_TRACE
FT_UInt debug_indent;
const FT_String* debug_function_name[3];
#endif
} OTV_ValidatorRec;
#undef FT_INVALID_
#define FT_INVALID_( _prefix, _error ) \
ft_validator_error( valid->root, _prefix ## _error )
#define OTV_OPTIONAL_TABLE( _table ) FT_UShort _table; \
FT_Bytes _table ## _p
#define OTV_OPTIONAL_OFFSET( _offset ) \
FT_BEGIN_STMNT \
_offset ## _p = p; \
_offset = FT_NEXT_USHORT( p ); \
FT_END_STMNT
#define OTV_LIMIT_CHECK( _count ) \
FT_BEGIN_STMNT \
if ( p + (_count) > valid->root->limit ) \
FT_INVALID_TOO_SHORT; \
FT_END_STMNT
#define OTV_SIZE_CHECK( _size ) \
FT_BEGIN_STMNT \
if ( _size > 0 && _size < table_size ) \
{ \
if ( valid->root->level == FT_VALIDATE_PARANOID ) \
FT_INVALID_OFFSET; \
else \
{ \
/* strip off `const' */ \
FT_Byte* pp = (FT_Byte*)_size ## _p; \
\
\
FT_TRACE3(( "\n" \
"Invalid offset to optional table `%s'!\n" \
"Set to zero.\n" \
"\n", #_size )); \
\
/* always assume 16bit entities */ \
_size = pp[0] = pp[1] = 0; \
} \
} \
FT_END_STMNT
#define OTV_NAME_(x) #x
#define OTV_NAME(x) OTV_NAME_(x)
#define OTV_FUNC_(x) x##Func
#define OTV_FUNC(x) OTV_FUNC_(x)
#ifdef FT_DEBUG_LEVEL_TRACE
#define OTV_NEST1( x ) \
FT_BEGIN_STMNT \
valid->nesting_level = 0; \
valid->func[0] = OTV_FUNC( x ); \
valid->debug_function_name[0] = OTV_NAME( x ); \
FT_END_STMNT
#define OTV_NEST2( x, y ) \
FT_BEGIN_STMNT \
valid->nesting_level = 0; \
valid->func[0] = OTV_FUNC( x ); \
valid->func[1] = OTV_FUNC( y ); \
valid->debug_function_name[0] = OTV_NAME( x ); \
valid->debug_function_name[1] = OTV_NAME( y ); \
FT_END_STMNT
#define OTV_NEST3( x, y, z ) \
FT_BEGIN_STMNT \
valid->nesting_level = 0; \
valid->func[0] = OTV_FUNC( x ); \
valid->func[1] = OTV_FUNC( y ); \
valid->func[2] = OTV_FUNC( z ); \
valid->debug_function_name[0] = OTV_NAME( x ); \
valid->debug_function_name[1] = OTV_NAME( y ); \
valid->debug_function_name[2] = OTV_NAME( z ); \
FT_END_STMNT
#define OTV_INIT valid->debug_indent = 0
#define OTV_ENTER \
FT_BEGIN_STMNT \
valid->debug_indent += 2; \
FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
FT_TRACE4(( "%s table\n", \
valid->debug_function_name[valid->nesting_level] )); \
FT_END_STMNT
#define OTV_NAME_ENTER( name ) \
FT_BEGIN_STMNT \
valid->debug_indent += 2; \
FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
FT_TRACE4(( "%s table\n", name )); \
FT_END_STMNT
#define OTV_EXIT valid->debug_indent -= 2
#define OTV_TRACE( s ) \
FT_BEGIN_STMNT \
FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \
FT_TRACE4( s ); \
FT_END_STMNT
#else /* !FT_DEBUG_LEVEL_TRACE */
#define OTV_NEST1( x ) \
FT_BEGIN_STMNT \
valid->nesting_level = 0; \
valid->func[0] = OTV_FUNC( x ); \
FT_END_STMNT
#define OTV_NEST2( x, y ) \
FT_BEGIN_STMNT \
valid->nesting_level = 0; \
valid->func[0] = OTV_FUNC( x ); \
valid->func[1] = OTV_FUNC( y ); \
FT_END_STMNT
#define OTV_NEST3( x, y, z ) \
FT_BEGIN_STMNT \
valid->nesting_level = 0; \
valid->func[0] = OTV_FUNC( x ); \
valid->func[1] = OTV_FUNC( y ); \
valid->func[2] = OTV_FUNC( z ); \
FT_END_STMNT
#define OTV_INIT do ; while ( 0 )
#define OTV_ENTER do ; while ( 0 )
#define OTV_NAME_ENTER( name ) do ; while ( 0 )
#define OTV_EXIT do ; while ( 0 )
#define OTV_TRACE( s ) do ; while ( 0 )
#endif /* !FT_DEBUG_LEVEL_TRACE */
#define OTV_RUN valid->func[0]
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** COVERAGE TABLE *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
FT_LOCAL( void )
otv_Coverage_validate( FT_Bytes table,
OTV_Validator valid );
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