gxvbsln.c File Reference

#include "gxvalid.h"
#include "gxvcommn.h"

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Classes
struct	GXV_bsln_DataRec_

Macros
#define	FT_COMPONENT   trace_gxvbsln
#define	GXV_BSLN_VALUE_COUNT   32
#define	GXV_BSLN_VALUE_EMPTY   0xFFFFU
#define	GXV_BSLN_DATA(field)   GXV_TABLE_DATA( bsln, field )

Typedefs
typedef struct GXV_bsln_DataRec_	GXV_bsln_DataRec
typedef struct GXV_bsln_DataRec_ *	GXV_bsln_Data

Functions
static void	gxv_bsln_LookupValue_validate (FT_UShort glyph, GXV_LookupValueCPtr value_p, GXV_Validator gxvalid)
static GXV_LookupValueDesc	gxv_bsln_LookupFmt4_transit (FT_UShort relative_gindex, GXV_LookupValueCPtr base_value_p, FT_Bytes lookuptbl_limit, GXV_Validator gxvalid)
static void	gxv_bsln_parts_fmt0_validate (FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_bsln_parts_fmt1_validate (FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_bsln_parts_fmt2_validate (FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_bsln_parts_fmt3_validate (FT_Bytes tables, FT_Bytes limit, GXV_Validator gxvalid)
	gxv_bsln_validate (FT_Bytes table, FT_Face face, FT_Validator ftvalid)

Macro Definition Documentation

FT_COMPONENT

#define FT_COMPONENT   trace_gxvbsln

Definition at line 39 of file gxvbsln.c.

GXV_BSLN_DATA

#define GXV_BSLN_DATA

(

field

)

GXV_TABLE_DATA( bsln, field )

Definition at line 62 of file gxvbsln.c.

GXV_BSLN_VALUE_COUNT

#define GXV_BSLN_VALUE_COUNT   32

Definition at line 50 of file gxvbsln.c.

GXV_BSLN_VALUE_EMPTY

#define GXV_BSLN_VALUE_EMPTY   0xFFFFU

Definition at line 51 of file gxvbsln.c.

Typedef Documentation

GXV_bsln_Data

typedef struct GXV_bsln_DataRec_ * GXV_bsln_Data

GXV_bsln_DataRec

typedef struct GXV_bsln_DataRec_ GXV_bsln_DataRec

Function Documentation

gxv_bsln_LookupFmt4_transit()

static GXV_LookupValueDesc gxv_bsln_LookupFmt4_transit ( FT_UShort  relative_gindex, GXV_LookupValueCPtr  base_value_p, FT_Bytes  lookuptbl_limit, GXV_Validator  gxvalid  )

static

Definition at line 125 of file gxvbsln.c.

  {
    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     = gxvalid->lookuptbl_head + offset;
    limit = lookuptbl_limit;
    GXV_LIMIT_CHECK( 2 );
 
    value.u = FT_NEXT_USHORT( p );
 
    return value;
  }

Referenced by gxv_bsln_parts_fmt1_validate(), and gxv_bsln_parts_fmt3_validate().

gxv_bsln_LookupValue_validate()

static void gxv_bsln_LookupValue_validate ( FT_UShort  glyph, GXV_LookupValueCPtr  value_p, GXV_Validator  gxvalid  )

static

Definition at line 74 of file gxvbsln.c.

  {
    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;
  }

Referenced by gxv_bsln_parts_fmt1_validate(), and gxv_bsln_parts_fmt3_validate().

gxv_bsln_parts_fmt0_validate()

static void gxv_bsln_parts_fmt0_validate ( FT_Bytes  tables, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 150 of file gxvbsln.c.

  {
    FT_Bytes  p = tables;
 
 
    GXV_NAME_ENTER( "parts format 0" );
 
    /* deltas */
    GXV_LIMIT_CHECK( 2 * GXV_BSLN_VALUE_COUNT );
 
    gxvalid->table_data = NULL;      /* No ctlPoints here. */
 
    GXV_EXIT;
  }

Referenced by gxv_bsln_parts_fmt1_validate(), and gxv_bsln_validate().

gxv_bsln_parts_fmt1_validate()

static void gxv_bsln_parts_fmt1_validate ( FT_Bytes  tables, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 169 of file gxvbsln.c.

  {
    FT_Bytes  p = tables;
 
 
    GXV_NAME_ENTER( "parts format 1" );
 
    /* deltas */
    gxv_bsln_parts_fmt0_validate( p, limit, gxvalid );
 
    /* mappingData */
    gxvalid->lookupval_sign   = GXV_LOOKUPVALUE_UNSIGNED;
    gxvalid->lookupval_func   = gxv_bsln_LookupValue_validate;
    gxvalid->lookupfmt4_trans = gxv_bsln_LookupFmt4_transit;
    gxv_LookupTable_validate( p + 2 * GXV_BSLN_VALUE_COUNT,
                              limit,
                              gxvalid );
 
    GXV_EXIT;
  }

Referenced by gxv_bsln_validate().

gxv_bsln_parts_fmt2_validate()

static void gxv_bsln_parts_fmt2_validate ( FT_Bytes  tables, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 194 of file gxvbsln.c.

  {
    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, gxvalid );
 
    /* 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, ctlPoint, gxvalid );
    }
 
    GXV_EXIT;
  }

Referenced by gxv_bsln_parts_fmt3_validate(), and gxv_bsln_validate().

gxv_bsln_parts_fmt3_validate()

static void gxv_bsln_parts_fmt3_validate ( FT_Bytes  tables, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 238 of file gxvbsln.c.

  {
    FT_Bytes  p = tables;
 
 
    GXV_NAME_ENTER( "parts format 3" );
 
    /* stdGlyph + ctlPoints */
    gxv_bsln_parts_fmt2_validate( p, limit, gxvalid );
 
    /* mappingData */
    gxvalid->lookupval_sign   = GXV_LOOKUPVALUE_UNSIGNED;
    gxvalid->lookupval_func   = gxv_bsln_LookupValue_validate;
    gxvalid->lookupfmt4_trans = gxv_bsln_LookupFmt4_transit;
    gxv_LookupTable_validate( p + ( 2 + 2 * GXV_BSLN_VALUE_COUNT ),
                              limit,
                              gxvalid );
 
    GXV_EXIT;
  }

Referenced by gxv_bsln_validate().

gxv_bsln_validate()

gxv_bsln_validate	(	FT_Bytes	table,
		FT_Face	face,
		FT_Validator	ftvalid
	)

Definition at line 271 of file gxvbsln.c.

  {
    GXV_ValidatorRec  gxvalidrec;
    GXV_Validator     gxvalid = &gxvalidrec;
 
    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,
    };
 
 
    gxvalid->root       = ftvalid;
    gxvalid->table_data = bsln;
    gxvalid->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, gxvalid );
 
    FT_TRACE4(( "\n" ));
  }