--- a/misc/libfreetype/src/gxvalid/gxvbsln.c Fri Oct 11 11:55:31 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,333 +0,0 @@
-/***************************************************************************/
-/* */
-/* gxvbsln.c */
-/* */
-/* TrueTypeGX/AAT bsln table validation (body). */
-/* */
-/* Copyright 2004, 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 "gxvalid.h"
-#include "gxvcommn.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_gxvbsln
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** Data and Types *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
-#define GXV_BSLN_VALUE_COUNT 32
-#define GXV_BSLN_VALUE_EMPTY 0xFFFFU
-
-
- typedef struct GXV_bsln_DataRec_
- {
- FT_Bytes ctlPoints_p;
- FT_UShort defaultBaseline;
-
- } GXV_bsln_DataRec, *GXV_bsln_Data;
-
-
-#define GXV_BSLN_DATA( field ) GXV_TABLE_DATA( bsln, field )
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** UTILITY FUNCTIONS *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- static void
- gxv_bsln_LookupValue_validate( FT_UShort glyph,
- GXV_LookupValueCPtr value_p,
- GXV_Validator valid )
- {
- FT_UShort v = value_p->u;
- FT_UShort* ctlPoints;
-
- FT_UNUSED( glyph );
-
-
- GXV_NAME_ENTER( "lookup value" );
-
- if ( v >= GXV_BSLN_VALUE_COUNT )
- FT_INVALID_DATA;
-
- ctlPoints = (FT_UShort*)GXV_BSLN_DATA( ctlPoints_p );
- if ( ctlPoints && ctlPoints[v] == GXV_BSLN_VALUE_EMPTY )
- FT_INVALID_DATA;
-
- GXV_EXIT;
- }
-
-
- /*
- +===============+ --------+
- | lookup header | |
- +===============+ |
- | BinSrchHeader | |
- +===============+ |
- | lastGlyph[0] | |
- +---------------+ |
- | firstGlyph[0] | | head of lookup table
- +---------------+ | +
- | offset[0] | -> | offset [byte]
- +===============+ | +
- | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte]
- +---------------+ |
- | firstGlyph[1] | |
- +---------------+ |
- | offset[1] | |
- +===============+ |
- |
- ... |
- |
- 16bit value array |
- +===============+ |
- | value | <-------+
- ...
- */
-
- static GXV_LookupValueDesc
- gxv_bsln_LookupFmt4_transit( FT_UShort relative_gindex,
- GXV_LookupValueCPtr base_value_p,
- FT_Bytes lookuptbl_limit,
- GXV_Validator valid )
- {
- FT_Bytes p;
- FT_Bytes limit;
- FT_UShort offset;
- GXV_LookupValueDesc value;
-
- /* XXX: check range ? */
- offset = (FT_UShort)( base_value_p->u +
- ( relative_gindex * sizeof ( FT_UShort ) ) );
-
- p = valid->lookuptbl_head + offset;
- limit = lookuptbl_limit;
- GXV_LIMIT_CHECK( 2 );
-
- value.u = FT_NEXT_USHORT( p );
-
- return value;
- }
-
-
- static void
- gxv_bsln_parts_fmt0_validate( FT_Bytes tables,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = tables;
-
-
- GXV_NAME_ENTER( "parts format 0" );
-
- /* deltas */
- GXV_LIMIT_CHECK( 2 * GXV_BSLN_VALUE_COUNT );
-
- valid->table_data = NULL; /* No ctlPoints here. */
-
- GXV_EXIT;
- }
-
-
- static void
- gxv_bsln_parts_fmt1_validate( FT_Bytes tables,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = tables;
-
-
- GXV_NAME_ENTER( "parts format 1" );
-
- /* deltas */
- gxv_bsln_parts_fmt0_validate( p, limit, valid );
-
- /* mappingData */
- valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED;
- valid->lookupval_func = gxv_bsln_LookupValue_validate;
- valid->lookupfmt4_trans = gxv_bsln_LookupFmt4_transit;
- gxv_LookupTable_validate( p + 2 * GXV_BSLN_VALUE_COUNT,
- limit,
- valid );
-
- GXV_EXIT;
- }
-
-
- static void
- gxv_bsln_parts_fmt2_validate( FT_Bytes tables,
- FT_Bytes limit,
- GXV_Validator valid )
- {
- FT_Bytes p = tables;
-
- FT_UShort stdGlyph;
- FT_UShort ctlPoint;
- FT_Int i;
-
- FT_UShort defaultBaseline = GXV_BSLN_DATA( defaultBaseline );
-
-
- GXV_NAME_ENTER( "parts format 2" );
-
- GXV_LIMIT_CHECK( 2 + ( 2 * GXV_BSLN_VALUE_COUNT ) );
-
- /* stdGlyph */
- stdGlyph = FT_NEXT_USHORT( p );
- GXV_TRACE(( " (stdGlyph = %u)\n", stdGlyph ));
-
- gxv_glyphid_validate( stdGlyph, valid );
-
- /* Record the position of ctlPoints */
- GXV_BSLN_DATA( ctlPoints_p ) = p;
-
- /* ctlPoints */
- for ( i = 0; i < GXV_BSLN_VALUE_COUNT; i++ )
- {
- ctlPoint = FT_NEXT_USHORT( p );
- if ( ctlPoint == GXV_BSLN_VALUE_EMPTY )
- {
- if ( i == defaultBaseline )
- FT_INVALID_DATA;
- }
- else
- gxv_ctlPoint_validate( stdGlyph, (FT_Short)ctlPoint, valid );
- }
-
- GXV_EXIT;
- }
-
-
- static void
- gxv_bsln_parts_fmt3_validate( FT_Bytes tables,
- FT_Bytes limit,
- GXV_Validator valid)
- {
- FT_Bytes p = tables;
-
-
- GXV_NAME_ENTER( "parts format 3" );
-
- /* stdGlyph + ctlPoints */
- gxv_bsln_parts_fmt2_validate( p, limit, valid );
-
- /* mappingData */
- valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED;
- valid->lookupval_func = gxv_bsln_LookupValue_validate;
- valid->lookupfmt4_trans = gxv_bsln_LookupFmt4_transit;
- gxv_LookupTable_validate( p + ( 2 + 2 * GXV_BSLN_VALUE_COUNT ),
- limit,
- valid );
-
- GXV_EXIT;
- }
-
-
- /*************************************************************************/
- /*************************************************************************/
- /***** *****/
- /***** bsln TABLE *****/
- /***** *****/
- /*************************************************************************/
- /*************************************************************************/
-
- FT_LOCAL_DEF( void )
- gxv_bsln_validate( FT_Bytes table,
- FT_Face face,
- FT_Validator ftvalid )
- {
- GXV_ValidatorRec validrec;
- GXV_Validator valid = &validrec;
-
- GXV_bsln_DataRec bslnrec;
- GXV_bsln_Data bsln = &bslnrec;
-
- FT_Bytes p = table;
- FT_Bytes limit = 0;
-
- FT_ULong version;
- FT_UShort format;
- FT_UShort defaultBaseline;
-
- GXV_Validate_Func fmt_funcs_table [] =
- {
- gxv_bsln_parts_fmt0_validate,
- gxv_bsln_parts_fmt1_validate,
- gxv_bsln_parts_fmt2_validate,
- gxv_bsln_parts_fmt3_validate,
- };
-
-
- valid->root = ftvalid;
- valid->table_data = bsln;
- valid->face = face;
-
- FT_TRACE3(( "validating `bsln' table\n" ));
- GXV_INIT;
-
-
- GXV_LIMIT_CHECK( 4 + 2 + 2 );
- version = FT_NEXT_ULONG( p );
- format = FT_NEXT_USHORT( p );
- defaultBaseline = FT_NEXT_USHORT( p );
-
- /* only version 1.0 is defined (1996) */
- if ( version != 0x00010000UL )
- FT_INVALID_FORMAT;
-
- /* only format 1, 2, 3 are defined (1996) */
- GXV_TRACE(( " (format = %d)\n", format ));
- if ( format > 3 )
- FT_INVALID_FORMAT;
-
- if ( defaultBaseline > 31 )
- FT_INVALID_FORMAT;
-
- bsln->defaultBaseline = defaultBaseline;
-
- fmt_funcs_table[format]( p, limit, valid );
-
- FT_TRACE4(( "\n" ));
- }
-
-
-/* arch-tag: ebe81143-fdaa-4c68-a4d1-b57227daa3bc
- (do not change this comment) */
-
-
-/* END */