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Diffstat (limited to 'src/gxvalid/gxvmorx.c')
| -rw-r--r-- | src/gxvalid/gxvmorx.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/src/gxvalid/gxvmorx.c b/src/gxvalid/gxvmorx.c deleted file mode 100644 index 849d5e9..0000000 --- a/src/gxvalid/gxvmorx.c +++ /dev/null @@ -1,183 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx.c */ -/* */ -/* TrueTypeGX/AAT morx table validation (body). */ -/* */ -/* 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 "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 - - - static void - gxv_morx_subtables_validate( FT_Bytes table, - FT_Bytes limit, - FT_UShort nSubtables, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_Validate_Func fmt_funcs_table[] = - { - gxv_morx_subtable_type0_validate, /* 0 */ - gxv_morx_subtable_type1_validate, /* 1 */ - gxv_morx_subtable_type2_validate, /* 2 */ - NULL, /* 3 */ - gxv_morx_subtable_type4_validate, /* 4 */ - gxv_morx_subtable_type5_validate, /* 5 */ - - }; - - GXV_Validate_Func func; - - FT_UShort i; - - - GXV_NAME_ENTER( "subtables in a chain" ); - - for ( i = 0; i < nSubtables; i++ ) - { - FT_ULong length; - FT_ULong coverage; - FT_ULong subFeatureFlags; - FT_UInt type; - FT_UInt rest; - - - GXV_LIMIT_CHECK( 4 + 4 + 4 ); - length = FT_NEXT_ULONG( p ); - coverage = FT_NEXT_ULONG( p ); - subFeatureFlags = FT_NEXT_ULONG( p ); - - GXV_TRACE(( "validating chain subtable %d/%d (%d bytes)\n", - i + 1, nSubtables, length )); - - type = coverage & 0x0007; - rest = length - ( 4 + 4 + 4 ); - GXV_LIMIT_CHECK( rest ); - - /* morx coverage consists of mort_coverage & 16bit padding */ - gxv_mort_coverage_validate( (FT_UShort)( ( coverage >> 16 ) | coverage ), - valid ); - if ( type > 5 ) - FT_INVALID_FORMAT; - - func = fmt_funcs_table[type]; - if ( func == NULL ) - GXV_TRACE(( "morx type %d is reserved\n", type )); - - func( p, p + rest, valid ); - - p += rest; - } - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static void - gxv_morx_chain_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong defaultFlags; - FT_ULong chainLength; - FT_ULong nFeatureFlags; - FT_ULong nSubtables; - - - GXV_NAME_ENTER( "morx chain header" ); - - GXV_LIMIT_CHECK( 4 + 4 + 4 + 4 ); - defaultFlags = FT_NEXT_ULONG( p ); - chainLength = FT_NEXT_ULONG( p ); - nFeatureFlags = FT_NEXT_ULONG( p ); - nSubtables = FT_NEXT_ULONG( p ); - - /* feature-array of morx is same with that of mort */ - gxv_mort_featurearray_validate( p, limit, nFeatureFlags, valid ); - p += valid->subtable_length; - - if ( nSubtables >= 0x10000 ) - FT_INVALID_DATA; - - gxv_morx_subtables_validate( p, table + chainLength, - (FT_UShort)nSubtables, valid ); - - valid->subtable_length = chainLength; - - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_morx_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - FT_Bytes p = table; - FT_Bytes limit = 0; - FT_ULong version; - FT_ULong nChains; - FT_ULong i; - - - valid->root = ftvalid; - valid->face = face; - - FT_TRACE3(( "validating `morx' table\n" )); - GXV_INIT; - - GXV_LIMIT_CHECK( 4 + 4 ); - version = FT_NEXT_ULONG( p ); - nChains = FT_NEXT_ULONG( p ); - - if ( version != 0x00020000UL ) - FT_INVALID_FORMAT; - - for ( i = 0; i < nChains; i++ ) - { - GXV_TRACE(( "validating chain %d/%d\n", i + 1, nChains )); - GXV_32BIT_ALIGNMENT_VALIDATE( p - table ); - gxv_morx_chain_validate( p, limit, valid ); - p += valid->subtable_length; - } - - FT_TRACE4(( "\n" )); - } - - -/* END */ |