gxvmort1.c File Reference

#include "gxvmort.h"

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Classes
struct	GXV_mort_subtable_type1_StateOptRec_

Macros
#define	FT_COMPONENT   trace_gxvmort
#define	GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE    ( GXV_STATETABLE_HEADER_SIZE + 2 )

Typedefs
typedef struct GXV_mort_subtable_type1_StateOptRec_	GXV_mort_subtable_type1_StateOptRec
typedef struct GXV_mort_subtable_type1_StateOptRec_ *	GXV_mort_subtable_type1_StateOptRecData

Functions
static void	gxv_mort_subtable_type1_substitutionTable_load (FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_mort_subtable_type1_subtable_setup (FT_UShort table_size, FT_UShort classTable, FT_UShort stateArray, FT_UShort entryTable, FT_UShort *classTable_length_p, FT_UShort *stateArray_length_p, FT_UShort *entryTable_length_p, GXV_Validator gxvalid)
static void	gxv_mort_subtable_type1_offset_to_subst_validate (FT_Short wordOffset, const FT_String *tag, FT_Byte state, GXV_Validator gxvalid)
static void	gxv_mort_subtable_type1_entry_validate (FT_Byte state, FT_UShort flags, GXV_StateTable_GlyphOffsetCPtr glyphOffset_p, FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_mort_subtable_type1_substTable_validate (FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
	gxv_mort_subtable_type1_validate (FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)

Macro Definition Documentation

FT_COMPONENT

#define FT_COMPONENT   trace_gxvmort

Definition at line 39 of file gxvmort1.c.

GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE

#define GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE    ( GXV_STATETABLE_HEADER_SIZE + 2 )

Definition at line 50 of file gxvmort1.c.

Typedef Documentation

GXV_mort_subtable_type1_StateOptRec

typedef struct GXV_mort_subtable_type1_StateOptRec_ GXV_mort_subtable_type1_StateOptRec

GXV_mort_subtable_type1_StateOptRecData

typedef struct GXV_mort_subtable_type1_StateOptRec_ * GXV_mort_subtable_type1_StateOptRecData

Function Documentation

gxv_mort_subtable_type1_entry_validate()

static void gxv_mort_subtable_type1_entry_validate ( FT_Byte  state, FT_UShort  flags, GXV_StateTable_GlyphOffsetCPtr  glyphOffset_p, FT_Bytes  table, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 135 of file gxvmort1.c.

  {
#ifdef GXV_LOAD_UNUSED_VARS
    FT_UShort  setMark;
    FT_UShort  dontAdvance;
#endif
    FT_UShort  reserved;
    FT_Short   markOffset;
    FT_Short   currentOffset;
 
    FT_UNUSED( table );
    FT_UNUSED( limit );
 
 
#ifdef GXV_LOAD_UNUSED_VARS
    setMark       = (FT_UShort)(   flags >> 15            );
    dontAdvance   = (FT_UShort)( ( flags >> 14 ) & 1      );
#endif
    reserved      = (FT_UShort)(    flags        & 0x3FFF );
 
    markOffset    = (FT_Short)( glyphOffset_p->ul >> 16 );
    currentOffset = (FT_Short)( glyphOffset_p->ul       );
 
    if ( 0 < reserved )
    {
      GXV_TRACE(( " non-zero bits found in reserved range\n" ));
      GXV_SET_ERR_IF_PARANOID( FT_INVALID_DATA );
    }
 
    gxv_mort_subtable_type1_offset_to_subst_validate( markOffset,
                                                      "markOffset",
                                                      state,
                                                      gxvalid );
 
    gxv_mort_subtable_type1_offset_to_subst_validate( currentOffset,
                                                      "currentOffset",
                                                      state,
                                                      gxvalid );
  }

Referenced by gxv_mort_subtable_type1_validate().

gxv_mort_subtable_type1_offset_to_subst_validate()

static void gxv_mort_subtable_type1_offset_to_subst_validate ( FT_Short  wordOffset, const FT_String *  tag, FT_Byte  state, GXV_Validator  gxvalid  )

static

Definition at line 102 of file gxvmort1.c.

  {
    FT_UShort  substTable;
    FT_UShort  substTable_limit;
 
    FT_UNUSED( tag );
    FT_UNUSED( state );
 
 
    substTable =
      ((GXV_mort_subtable_type1_StateOptRec *)
       (gxvalid->statetable.optdata))->substitutionTable;
    substTable_limit =
      (FT_UShort)( substTable +
                   ((GXV_mort_subtable_type1_StateOptRec *)
                    (gxvalid->statetable.optdata))->substitutionTable_length );
 
    gxvalid->min_gid = (FT_UShort)( ( substTable       - wordOffset * 2 ) / 2 );
    gxvalid->max_gid = (FT_UShort)( ( substTable_limit - wordOffset * 2 ) / 2 );
    gxvalid->max_gid = (FT_UShort)( FT_MAX( gxvalid->max_gid,
                                            gxvalid->face->num_glyphs ) );
 
    /* XXX: check range? */
 
    /* TODO: min_gid & max_gid comparison with ClassTable contents */
  }

Referenced by gxv_mort_subtable_type1_entry_validate().

gxv_mort_subtable_type1_substitutionTable_load()

static void gxv_mort_subtable_type1_substitutionTable_load ( FT_Bytes  table, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 55 of file gxvmort1.c.

  {
    FT_Bytes  p = table;
 
    GXV_mort_subtable_type1_StateOptRecData  optdata =
      (GXV_mort_subtable_type1_StateOptRecData)gxvalid->statetable.optdata;
 
 
    GXV_LIMIT_CHECK( 2 );
    optdata->substitutionTable = FT_NEXT_USHORT( p );
  }

Referenced by gxv_mort_subtable_type1_validate().

gxv_mort_subtable_type1_substTable_validate()

static void gxv_mort_subtable_type1_substTable_validate ( FT_Bytes  table, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 183 of file gxvmort1.c.

  {
    FT_Bytes   p = table;
    FT_UShort  num_gids = (FT_UShort)(
                 ((GXV_mort_subtable_type1_StateOptRec *)
                  (gxvalid->statetable.optdata))->substitutionTable_length / 2 );
    FT_UShort  i;
 
 
    GXV_NAME_ENTER( "validating contents of substitutionTable" );
    for ( i = 0; i < num_gids; i++ )
    {
      FT_UShort  dst_gid;
 
 
      GXV_LIMIT_CHECK( 2 );
      dst_gid = FT_NEXT_USHORT( p );
 
      if ( dst_gid >= 0xFFFFU )
        continue;
 
      if ( dst_gid < gxvalid->min_gid || gxvalid->max_gid < dst_gid )
      {
        GXV_TRACE(( "substTable include a strange gid[%d]=%d >"
                    " out of define range (%d..%d)\n",
                    i, dst_gid, gxvalid->min_gid, gxvalid->max_gid ));
        GXV_SET_ERR_IF_PARANOID( FT_INVALID_GLYPH_ID );
      }
    }
 
    GXV_EXIT;
  }

Referenced by gxv_mort_subtable_type1_validate().

gxv_mort_subtable_type1_subtable_setup()

static void gxv_mort_subtable_type1_subtable_setup ( FT_UShort  table_size, FT_UShort  classTable, FT_UShort  stateArray, FT_UShort  entryTable, FT_UShort *  classTable_length_p, FT_UShort *  stateArray_length_p, FT_UShort *  entryTable_length_p, GXV_Validator  gxvalid  )

static

Definition at line 71 of file gxvmort1.c.

  {
    FT_UShort  o[4];
    FT_UShort  *l[4];
    FT_UShort  buff[5];
 
    GXV_mort_subtable_type1_StateOptRecData  optdata =
      (GXV_mort_subtable_type1_StateOptRecData)gxvalid->statetable.optdata;
 
 
    o[0] = classTable;
    o[1] = stateArray;
    o[2] = entryTable;
    o[3] = optdata->substitutionTable;
    l[0] = classTable_length_p;
    l[1] = stateArray_length_p;
    l[2] = entryTable_length_p;
    l[3] = &( optdata->substitutionTable_length );
 
    gxv_set_length_by_ushort_offset( o, l, buff, 4, table_size, gxvalid );
  }

Referenced by gxv_mort_subtable_type1_validate().

gxv_mort_subtable_type1_validate()

gxv_mort_subtable_type1_validate	(	FT_Bytes	table,
		FT_Bytes	limit,
		GXV_Validator	gxvalid
	)

Definition at line 225 of file gxvmort1.c.

  {
    FT_Bytes  p = table;
 
    GXV_mort_subtable_type1_StateOptRec  st_rec;
 
 
    GXV_NAME_ENTER( "mort chain subtable type1 (Contextual Glyph Subst)" );
 
    GXV_LIMIT_CHECK( GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE );
 
    gxvalid->statetable.optdata =
      &st_rec;
    gxvalid->statetable.optdata_load_func =
      gxv_mort_subtable_type1_substitutionTable_load;
    gxvalid->statetable.subtable_setup_func =
      gxv_mort_subtable_type1_subtable_setup;
    gxvalid->statetable.entry_glyphoffset_fmt =
      GXV_GLYPHOFFSET_ULONG;
    gxvalid->statetable.entry_validate_func =
 
      gxv_mort_subtable_type1_entry_validate;
    gxv_StateTable_validate( p, limit, gxvalid );
 
    gxv_mort_subtable_type1_substTable_validate(
      table + st_rec.substitutionTable,
      table + st_rec.substitutionTable + st_rec.substitutionTable_length,
      gxvalid );
 
    GXV_EXIT;
  }

Referenced by gxv_mort_subtables_validate().