+++ /dev/null
-/***************************************************************************/
-/* */
-/* otvmod.c */
-/* */
-/* FreeType's OpenType validation module implementation (body). */
-/* */
-/* Copyright 2004-2017 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. */
-/* */
-/***************************************************************************/
-
-
-#include <ft2build.h>
-#include FT_TRUETYPE_TABLES_H
-#include FT_TRUETYPE_TAGS_H
-#include FT_OPENTYPE_VALIDATE_H
-#include FT_INTERNAL_OBJECTS_H
-#include FT_SERVICE_OPENTYPE_VALIDATE_H
-
-#include "otvmod.h"
-#include "otvalid.h"
-#include "otvcommn.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_otvmodule
-
-
- static FT_Error
- otv_load_table( FT_Face face,
- FT_Tag tag,
- FT_Byte* volatile* table,
- FT_ULong* table_len )
- {
- FT_Error error;
- FT_Memory memory = FT_FACE_MEMORY( face );
-
-
- error = FT_Load_Sfnt_Table( face, tag, 0, NULL, table_len );
- if ( FT_ERR_EQ( error, Table_Missing ) )
- return FT_Err_Ok;
- if ( error )
- goto Exit;
-
- if ( FT_ALLOC( *table, *table_len ) )
- goto Exit;
-
- error = FT_Load_Sfnt_Table( face, tag, 0, *table, table_len );
-
- Exit:
- return error;
- }
-
-
- static FT_Error
- otv_validate( FT_Face volatile face,
- FT_UInt ot_flags,
- FT_Bytes *ot_base,
- FT_Bytes *ot_gdef,
- FT_Bytes *ot_gpos,
- FT_Bytes *ot_gsub,
- FT_Bytes *ot_jstf )
- {
- FT_Error error = FT_Err_Ok;
- FT_Byte* volatile base;
- FT_Byte* volatile gdef;
- FT_Byte* volatile gpos;
- FT_Byte* volatile gsub;
- FT_Byte* volatile jstf;
- FT_Byte* volatile math;
- FT_ULong len_base, len_gdef, len_gpos, len_gsub, len_jstf;
- FT_ULong len_math;
- FT_UInt num_glyphs = (FT_UInt)face->num_glyphs;
- FT_ValidatorRec volatile valid;
-
-
- base = gdef = gpos = gsub = jstf = math = NULL;
- len_base = len_gdef = len_gpos = len_gsub = len_jstf = len_math = 0;
-
- /*
- * XXX: OpenType tables cannot handle 32-bit glyph index,
- * although broken TrueType can have 32-bit glyph index.
- */
- if ( face->num_glyphs > 0xFFFFL )
- {
- FT_TRACE1(( "otv_validate: Invalid glyphs index (0x0000FFFF - 0x%08x) ",
- face->num_glyphs ));
- FT_TRACE1(( "are not handled by OpenType tables\n" ));
- num_glyphs = 0xFFFF;
- }
-
- /* load tables */
-
- if ( ot_flags & FT_VALIDATE_BASE )
- {
- error = otv_load_table( face, TTAG_BASE, &base, &len_base );
- if ( error )
- goto Exit;
- }
-
- if ( ot_flags & FT_VALIDATE_GDEF )
- {
- error = otv_load_table( face, TTAG_GDEF, &gdef, &len_gdef );
- if ( error )
- goto Exit;
- }
-
- if ( ot_flags & FT_VALIDATE_GPOS )
- {
- error = otv_load_table( face, TTAG_GPOS, &gpos, &len_gpos );
- if ( error )
- goto Exit;
- }
-
- if ( ot_flags & FT_VALIDATE_GSUB )
- {
- error = otv_load_table( face, TTAG_GSUB, &gsub, &len_gsub );
- if ( error )
- goto Exit;
- }
-
- if ( ot_flags & FT_VALIDATE_JSTF )
- {
- error = otv_load_table( face, TTAG_JSTF, &jstf, &len_jstf );
- if ( error )
- goto Exit;
- }
-
- if ( ot_flags & FT_VALIDATE_MATH )
- {
- error = otv_load_table( face, TTAG_MATH, &math, &len_math );
- if ( error )
- goto Exit;
- }
-
- /* validate tables */
-
- if ( base )
- {
- ft_validator_init( &valid, base, base + len_base, FT_VALIDATE_DEFAULT );
- if ( ft_setjmp( valid.jump_buffer ) == 0 )
- otv_BASE_validate( base, &valid );
- error = valid.error;
- if ( error )
- goto Exit;
- }
-
- if ( gpos )
- {
- ft_validator_init( &valid, gpos, gpos + len_gpos, FT_VALIDATE_DEFAULT );
- if ( ft_setjmp( valid.jump_buffer ) == 0 )
- otv_GPOS_validate( gpos, num_glyphs, &valid );
- error = valid.error;
- if ( error )
- goto Exit;
- }
-
- if ( gsub )
- {
- ft_validator_init( &valid, gsub, gsub + len_gsub, FT_VALIDATE_DEFAULT );
- if ( ft_setjmp( valid.jump_buffer ) == 0 )
- otv_GSUB_validate( gsub, num_glyphs, &valid );
- error = valid.error;
- if ( error )
- goto Exit;
- }
-
- if ( gdef )
- {
- ft_validator_init( &valid, gdef, gdef + len_gdef, FT_VALIDATE_DEFAULT );
- if ( ft_setjmp( valid.jump_buffer ) == 0 )
- otv_GDEF_validate( gdef, gsub, gpos, num_glyphs, &valid );
- error = valid.error;
- if ( error )
- goto Exit;
- }
-
- if ( jstf )
- {
- ft_validator_init( &valid, jstf, jstf + len_jstf, FT_VALIDATE_DEFAULT );
- if ( ft_setjmp( valid.jump_buffer ) == 0 )
- otv_JSTF_validate( jstf, gsub, gpos, num_glyphs, &valid );
- error = valid.error;
- if ( error )
- goto Exit;
- }
-
- if ( math )
- {
- ft_validator_init( &valid, math, math + len_math, FT_VALIDATE_DEFAULT );
- if ( ft_setjmp( valid.jump_buffer ) == 0 )
- otv_MATH_validate( math, num_glyphs, &valid );
- error = valid.error;
- if ( error )
- goto Exit;
- }
-
- *ot_base = (FT_Bytes)base;
- *ot_gdef = (FT_Bytes)gdef;
- *ot_gpos = (FT_Bytes)gpos;
- *ot_gsub = (FT_Bytes)gsub;
- *ot_jstf = (FT_Bytes)jstf;
-
- Exit:
- if ( error )
- {
- FT_Memory memory = FT_FACE_MEMORY( face );
-
-
- FT_FREE( base );
- FT_FREE( gdef );
- FT_FREE( gpos );
- FT_FREE( gsub );
- FT_FREE( jstf );
- }
-
- {
- FT_Memory memory = FT_FACE_MEMORY( face );
-
-
- FT_FREE( math ); /* Can't return this as API is frozen */
- }
-
- return error;
- }
-
-
- static
- const FT_Service_OTvalidateRec otvalid_interface =
- {
- otv_validate /* validate */
- };
-
-
- static
- const FT_ServiceDescRec otvalid_services[] =
- {
- { FT_SERVICE_ID_OPENTYPE_VALIDATE, &otvalid_interface },
- { NULL, NULL }
- };
-
-
- static FT_Pointer
- otvalid_get_service( FT_Module module,
- const char* service_id )
- {
- FT_UNUSED( module );
-
- return ft_service_list_lookup( otvalid_services, service_id );
- }
-
-
- FT_CALLBACK_TABLE_DEF
- const FT_Module_Class otv_module_class =
- {
- 0,
- sizeof ( FT_ModuleRec ),
- "otvalid",
- 0x10000L,
- 0x20000L,
-
- NULL, /* module-specific interface */
-
- (FT_Module_Constructor)NULL, /* module_init */
- (FT_Module_Destructor) NULL, /* module_done */
- (FT_Module_Requester) otvalid_get_service /* get_interface */
- };
-
-
-/* END */
projects / reactos.git / blobdiff