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/***************************************************************************/ |
/* */ |
/* otvcommn.h */ |
/* */ |
/* OpenType common tables validation (specification). */ |
/* */ |
/* Copyright 2004, 2005, 2007, 2009 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. */ |
/* */ |
/***************************************************************************/ |
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#ifndef __OTVCOMMN_H__ |
#define __OTVCOMMN_H__ |
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#include <ft2build.h> |
#include "otvalid.h" |
#include FT_INTERNAL_DEBUG_H |
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FT_BEGIN_HEADER |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** VALIDATION *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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typedef struct OTV_ValidatorRec_* OTV_Validator; |
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typedef void (*OTV_Validate_Func)( FT_Bytes table, |
OTV_Validator valid ); |
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typedef struct OTV_ValidatorRec_ |
{ |
FT_Validator root; |
FT_UInt type_count; |
OTV_Validate_Func* type_funcs; |
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FT_UInt lookup_count; |
FT_UInt glyph_count; |
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FT_UInt nesting_level; |
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OTV_Validate_Func func[3]; |
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FT_UInt extra1; /* for passing parameters */ |
FT_UInt extra2; |
FT_Bytes extra3; |
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#ifdef FT_DEBUG_LEVEL_TRACE |
FT_UInt debug_indent; |
const FT_String* debug_function_name[3]; |
#endif |
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} OTV_ValidatorRec; |
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#undef FT_INVALID_ |
#define FT_INVALID_( _prefix, _error ) \ |
ft_validator_error( valid->root, _prefix ## _error ) |
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#define OTV_OPTIONAL_TABLE( _table ) FT_UShort _table; \ |
FT_Bytes _table ## _p |
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#define OTV_OPTIONAL_OFFSET( _offset ) \ |
FT_BEGIN_STMNT \ |
_offset ## _p = p; \ |
_offset = FT_NEXT_USHORT( p ); \ |
FT_END_STMNT |
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#define OTV_LIMIT_CHECK( _count ) \ |
FT_BEGIN_STMNT \ |
if ( p + (_count) > valid->root->limit ) \ |
FT_INVALID_TOO_SHORT; \ |
FT_END_STMNT |
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#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'" \ |
" set to zero.\n" \ |
"\n", #_size )); \ |
\ |
/* always assume 16bit entities */ \ |
_size = pp[0] = pp[1] = 0; \ |
} \ |
} \ |
FT_END_STMNT |
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#define OTV_NAME_(x) #x |
#define OTV_NAME(x) OTV_NAME_(x) |
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#define OTV_FUNC_(x) x##Func |
#define OTV_FUNC(x) OTV_FUNC_(x) |
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#ifdef FT_DEBUG_LEVEL_TRACE |
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#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 |
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#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 |
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#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 |
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#define OTV_INIT valid->debug_indent = 0 |
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#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 |
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#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 |
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#define OTV_EXIT valid->debug_indent -= 2 |
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#define OTV_TRACE( s ) \ |
FT_BEGIN_STMNT \ |
FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \ |
FT_TRACE4( s ); \ |
FT_END_STMNT |
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#else /* !FT_DEBUG_LEVEL_TRACE */ |
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#define OTV_NEST1( x ) \ |
FT_BEGIN_STMNT \ |
valid->nesting_level = 0; \ |
valid->func[0] = OTV_FUNC( x ); \ |
FT_END_STMNT |
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#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 |
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#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 |
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#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 ) |
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#define OTV_TRACE( s ) do { } while ( 0 ) |
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#endif /* !FT_DEBUG_LEVEL_TRACE */ |
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#define OTV_RUN valid->func[0] |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** COVERAGE TABLE *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_Coverage_validate( FT_Bytes table, |
OTV_Validator valid, |
FT_Int expected_count ); |
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/* return first covered glyph */ |
FT_LOCAL( FT_UInt ) |
otv_Coverage_get_first( FT_Bytes table ); |
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/* return last covered glyph */ |
FT_LOCAL( FT_UInt ) |
otv_Coverage_get_last( FT_Bytes table ); |
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/* return number of covered glyphs */ |
FT_LOCAL( FT_UInt ) |
otv_Coverage_get_count( FT_Bytes table ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** CLASS DEFINITION TABLE *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_ClassDef_validate( FT_Bytes table, |
OTV_Validator valid ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** DEVICE TABLE *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_Device_validate( FT_Bytes table, |
OTV_Validator valid ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** LOOKUPS *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_Lookup_validate( FT_Bytes table, |
OTV_Validator valid ); |
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FT_LOCAL( void ) |
otv_LookupList_validate( FT_Bytes table, |
OTV_Validator valid ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** FEATURES *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_Feature_validate( FT_Bytes table, |
OTV_Validator valid ); |
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/* lookups must already be validated */ |
FT_LOCAL( void ) |
otv_FeatureList_validate( FT_Bytes table, |
FT_Bytes lookups, |
OTV_Validator valid ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** LANGUAGE SYSTEM *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_LangSys_validate( FT_Bytes table, |
OTV_Validator valid ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** SCRIPTS *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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FT_LOCAL( void ) |
otv_Script_validate( FT_Bytes table, |
OTV_Validator valid ); |
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/* features must already be validated */ |
FT_LOCAL( void ) |
otv_ScriptList_validate( FT_Bytes table, |
FT_Bytes features, |
OTV_Validator valid ); |
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/*************************************************************************/ |
/*************************************************************************/ |
/***** *****/ |
/***** UTILITY FUNCTIONS *****/ |
/***** *****/ |
/*************************************************************************/ |
/*************************************************************************/ |
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#define ChainPosClassSetFunc otv_x_Ox |
#define ChainPosRuleSetFunc otv_x_Ox |
#define ChainSubClassSetFunc otv_x_Ox |
#define ChainSubRuleSetFunc otv_x_Ox |
#define JstfLangSysFunc otv_x_Ox |
#define JstfMaxFunc otv_x_Ox |
#define LigGlyphFunc otv_x_Ox |
#define LigatureArrayFunc otv_x_Ox |
#define LigatureSetFunc otv_x_Ox |
#define PosClassSetFunc otv_x_Ox |
#define PosRuleSetFunc otv_x_Ox |
#define SubClassSetFunc otv_x_Ox |
#define SubRuleSetFunc otv_x_Ox |
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FT_LOCAL( void ) |
otv_x_Ox ( FT_Bytes table, |
OTV_Validator valid ); |
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#define AlternateSubstFormat1Func otv_u_C_x_Ox |
#define ChainContextPosFormat1Func otv_u_C_x_Ox |
#define ChainContextSubstFormat1Func otv_u_C_x_Ox |
#define ContextPosFormat1Func otv_u_C_x_Ox |
#define ContextSubstFormat1Func otv_u_C_x_Ox |
#define LigatureSubstFormat1Func otv_u_C_x_Ox |
#define MultipleSubstFormat1Func otv_u_C_x_Ox |
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FT_LOCAL( void ) |
otv_u_C_x_Ox( FT_Bytes table, |
OTV_Validator valid ); |
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#define AlternateSetFunc otv_x_ux |
#define AttachPointFunc otv_x_ux |
#define ExtenderGlyphFunc otv_x_ux |
#define JstfGPOSModListFunc otv_x_ux |
#define JstfGSUBModListFunc otv_x_ux |
#define SequenceFunc otv_x_ux |
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FT_LOCAL( void ) |
otv_x_ux( FT_Bytes table, |
OTV_Validator valid ); |
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#define PosClassRuleFunc otv_x_y_ux_sy |
#define PosRuleFunc otv_x_y_ux_sy |
#define SubClassRuleFunc otv_x_y_ux_sy |
#define SubRuleFunc otv_x_y_ux_sy |
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FT_LOCAL( void ) |
otv_x_y_ux_sy( FT_Bytes table, |
OTV_Validator valid ); |
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#define ChainPosClassRuleFunc otv_x_ux_y_uy_z_uz_p_sp |
#define ChainPosRuleFunc otv_x_ux_y_uy_z_uz_p_sp |
#define ChainSubClassRuleFunc otv_x_ux_y_uy_z_uz_p_sp |
#define ChainSubRuleFunc otv_x_ux_y_uy_z_uz_p_sp |
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FT_LOCAL( void ) |
otv_x_ux_y_uy_z_uz_p_sp( FT_Bytes table, |
OTV_Validator valid ); |
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#define ContextPosFormat2Func otv_u_O_O_x_Onx |
#define ContextSubstFormat2Func otv_u_O_O_x_Onx |
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FT_LOCAL( void ) |
otv_u_O_O_x_Onx( FT_Bytes table, |
OTV_Validator valid ); |
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#define ContextPosFormat3Func otv_u_x_y_Ox_sy |
#define ContextSubstFormat3Func otv_u_x_y_Ox_sy |
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FT_LOCAL( void ) |
otv_u_x_y_Ox_sy( FT_Bytes table, |
OTV_Validator valid ); |
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#define ChainContextPosFormat2Func otv_u_O_O_O_O_x_Onx |
#define ChainContextSubstFormat2Func otv_u_O_O_O_O_x_Onx |
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FT_LOCAL( void ) |
otv_u_O_O_O_O_x_Onx( FT_Bytes table, |
OTV_Validator valid ); |
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#define ChainContextPosFormat3Func otv_u_x_Ox_y_Oy_z_Oz_p_sp |
#define ChainContextSubstFormat3Func otv_u_x_Ox_y_Oy_z_Oz_p_sp |
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FT_LOCAL( void ) |
otv_u_x_Ox_y_Oy_z_Oz_p_sp( FT_Bytes table, |
OTV_Validator valid ); |
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FT_LOCAL( FT_UInt ) |
otv_GSUBGPOS_get_Lookup_count( FT_Bytes table ); |
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FT_LOCAL( FT_UInt ) |
otv_GSUBGPOS_have_MarkAttachmentType_flag( FT_Bytes table ); |
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/* */ |
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FT_END_HEADER |
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#endif /* __OTVCOMMN_H__ */ |
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/* END */ |