gxvmorx1.c File Reference

#include "gxvmorx.h"

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Classes
struct	GXV_morx_subtable_type1_StateOptRec_

Macros
#define	FT_COMPONENT   trace_gxvmorx
#define	GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE    ( GXV_STATETABLE_HEADER_SIZE + 2 )

Typedefs
typedef struct GXV_morx_subtable_type1_StateOptRec_	GXV_morx_subtable_type1_StateOptRec
typedef struct GXV_morx_subtable_type1_StateOptRec_ *	GXV_morx_subtable_type1_StateOptRecData

Functions
static void	gxv_morx_subtable_type1_substitutionTable_load (FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_morx_subtable_type1_subtable_setup (FT_ULong table_size, FT_ULong classTable, FT_ULong stateArray, FT_ULong entryTable, FT_ULong *classTable_length_p, FT_ULong *stateArray_length_p, FT_ULong *entryTable_length_p, GXV_Validator gxvalid)
static void	gxv_morx_subtable_type1_entry_validate (FT_UShort state, FT_UShort flags, GXV_StateTable_GlyphOffsetCPtr glyphOffset_p, FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
static void	gxv_morx_subtable_type1_LookupValue_validate (FT_UShort glyph, GXV_LookupValueCPtr value_p, GXV_Validator gxvalid)
static GXV_LookupValueDesc	gxv_morx_subtable_type1_LookupFmt4_transit (FT_UShort relative_gindex, GXV_LookupValueCPtr base_value_p, FT_Bytes lookuptbl_limit, GXV_Validator gxvalid)
static void	gxv_morx_subtable_type1_substitutionTable_validate (FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)
	gxv_morx_subtable_type1_validate (FT_Bytes table, FT_Bytes limit, GXV_Validator gxvalid)

Macro Definition Documentation

FT_COMPONENT

#define FT_COMPONENT   trace_gxvmorx

Definition at line 39 of file gxvmorx1.c.

GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE

#define GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE    ( GXV_STATETABLE_HEADER_SIZE + 2 )

Definition at line 52 of file gxvmorx1.c.

Typedef Documentation

GXV_morx_subtable_type1_StateOptRec

typedef struct GXV_morx_subtable_type1_StateOptRec_ GXV_morx_subtable_type1_StateOptRec

GXV_morx_subtable_type1_StateOptRecData

typedef struct GXV_morx_subtable_type1_StateOptRec_ * GXV_morx_subtable_type1_StateOptRecData

Function Documentation

gxv_morx_subtable_type1_entry_validate()

static void gxv_morx_subtable_type1_entry_validate ( FT_UShort  state, FT_UShort  flags, GXV_StateTable_GlyphOffsetCPtr  glyphOffset_p, FT_Bytes  table, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 104 of file gxvmorx1.c.

  {
#ifdef GXV_LOAD_TRACE_VARS
    FT_UShort  setMark;
    FT_UShort  dontAdvance;
#endif
    FT_UShort  reserved;
    FT_Short   markIndex;
    FT_Short   currentIndex;
 
    GXV_morx_subtable_type1_StateOptRecData  optdata =
      (GXV_morx_subtable_type1_StateOptRecData)gxvalid->xstatetable.optdata;
 
    FT_UNUSED( state );
    FT_UNUSED( table );
    FT_UNUSED( limit );
 
 
#ifdef GXV_LOAD_TRACE_VARS
    setMark      = (FT_UShort)( ( flags >> 15 ) & 1 );
    dontAdvance  = (FT_UShort)( ( flags >> 14 ) & 1 );
#endif
 
    reserved = (FT_UShort)( flags & 0x3FFF );
 
    markIndex    = (FT_Short)( glyphOffset_p->ul >> 16 );
    currentIndex = (FT_Short)( glyphOffset_p->ul       );
 
    GXV_TRACE(( " setMark=%01d dontAdvance=%01d\n",
                setMark, dontAdvance ));
 
    if ( 0 < reserved )
    {
      GXV_TRACE(( " non-zero bits found in reserved range\n" ));
      GXV_SET_ERR_IF_PARANOID( FT_INVALID_DATA );
    }
 
    GXV_TRACE(( "markIndex = %d, currentIndex = %d\n",
                markIndex, currentIndex ));
 
    if ( optdata->substitutionTable_num_lookupTables < markIndex + 1 )
      optdata->substitutionTable_num_lookupTables =
        (FT_UShort)( markIndex + 1 );
 
    if ( optdata->substitutionTable_num_lookupTables < currentIndex + 1 )
      optdata->substitutionTable_num_lookupTables =
        (FT_UShort)( currentIndex + 1 );
  }

Referenced by gxv_morx_subtable_type1_validate().

gxv_morx_subtable_type1_LookupFmt4_transit()

static GXV_LookupValueDesc gxv_morx_subtable_type1_LookupFmt4_transit ( FT_UShort  relative_gindex, GXV_LookupValueCPtr  base_value_p, FT_Bytes  lookuptbl_limit, GXV_Validator  gxvalid  )

static

Definition at line 175 of file gxvmorx1.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_morx_subtable_type1_substitutionTable_validate().

gxv_morx_subtable_type1_LookupValue_validate()

static void gxv_morx_subtable_type1_LookupValue_validate ( FT_UShort  glyph, GXV_LookupValueCPtr  value_p, GXV_Validator  gxvalid  )

static

Definition at line 161 of file gxvmorx1.c.

  {
    FT_UNUSED( glyph ); /* for the non-debugging case */
 
    GXV_TRACE(( "morx subtable type1 subst.: %d -> %d\n", glyph, value_p->u ));
 
    if ( value_p->u > gxvalid->face->num_glyphs )
      FT_INVALID_GLYPH_ID;
  }

Referenced by gxv_morx_subtable_type1_substitutionTable_validate().

gxv_morx_subtable_type1_substitutionTable_load()

static void gxv_morx_subtable_type1_substitutionTable_load ( FT_Bytes  table, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 57 of file gxvmorx1.c.

  {
    FT_Bytes  p = table;
 
    GXV_morx_subtable_type1_StateOptRecData  optdata =
      (GXV_morx_subtable_type1_StateOptRecData)gxvalid->xstatetable.optdata;
 
 
    GXV_LIMIT_CHECK( 2 );
    optdata->substitutionTable = FT_NEXT_USHORT( p );
  }

Referenced by gxv_morx_subtable_type1_validate().

gxv_morx_subtable_type1_substitutionTable_validate()

static void gxv_morx_subtable_type1_substitutionTable_validate ( FT_Bytes  table, FT_Bytes  limit, GXV_Validator  gxvalid  )

static

Definition at line 204 of file gxvmorx1.c.

  {
    FT_Bytes   p = table;
    FT_UShort  i;
 
    GXV_morx_subtable_type1_StateOptRecData  optdata =
      (GXV_morx_subtable_type1_StateOptRecData)gxvalid->xstatetable.optdata;
 
 
    /* TODO: calculate offset/length for each lookupTables */
    gxvalid->lookupval_sign   = GXV_LOOKUPVALUE_UNSIGNED;
    gxvalid->lookupval_func   = gxv_morx_subtable_type1_LookupValue_validate;
    gxvalid->lookupfmt4_trans = gxv_morx_subtable_type1_LookupFmt4_transit;
 
    for ( i = 0; i < optdata->substitutionTable_num_lookupTables; i++ )
    {
      FT_ULong  offset;
 
 
      GXV_LIMIT_CHECK( 4 );
      offset = FT_NEXT_ULONG( p );
 
      gxv_LookupTable_validate( table + offset, limit, gxvalid );
    }
 
    /* TODO: overlapping of lookupTables in substitutionTable */
  }

Referenced by gxv_morx_subtable_type1_validate().

gxv_morx_subtable_type1_subtable_setup()

static void gxv_morx_subtable_type1_subtable_setup ( FT_ULong  table_size, FT_ULong  classTable, FT_ULong  stateArray, FT_ULong  entryTable, FT_ULong *  classTable_length_p, FT_ULong *  stateArray_length_p, FT_ULong *  entryTable_length_p, GXV_Validator  gxvalid  )

static

Definition at line 73 of file gxvmorx1.c.

  {
    FT_ULong  o[4];
    FT_ULong  *l[4];
    FT_ULong  buff[5];
 
    GXV_morx_subtable_type1_StateOptRecData  optdata =
      (GXV_morx_subtable_type1_StateOptRecData)gxvalid->xstatetable.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_ulong_offset( o, l, buff, 4, table_size, gxvalid );
  }

Referenced by gxv_morx_subtable_type1_validate().

gxv_morx_subtable_type1_validate()

gxv_morx_subtable_type1_validate	(	FT_Bytes	table,
		FT_Bytes	limit,
		GXV_Validator	gxvalid
	)

Definition at line 241 of file gxvmorx1.c.

  {
    FT_Bytes  p = table;
 
    GXV_morx_subtable_type1_StateOptRec  st_rec;
 
 
    GXV_NAME_ENTER( "morx chain subtable type1 (Contextual Glyph Subst)" );
 
    GXV_LIMIT_CHECK( GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE );
 
    st_rec.substitutionTable_num_lookupTables = 0;
 
    gxvalid->xstatetable.optdata =
      &st_rec;
    gxvalid->xstatetable.optdata_load_func =
      gxv_morx_subtable_type1_substitutionTable_load;
    gxvalid->xstatetable.subtable_setup_func =
      gxv_morx_subtable_type1_subtable_setup;
    gxvalid->xstatetable.entry_glyphoffset_fmt =
      GXV_GLYPHOFFSET_ULONG;
    gxvalid->xstatetable.entry_validate_func =
      gxv_morx_subtable_type1_entry_validate;
 
    gxv_XStateTable_validate( p, limit, gxvalid );
 
    gxv_morx_subtable_type1_substitutionTable_validate(
      table + st_rec.substitutionTable,
      table + st_rec.substitutionTable + st_rec.substitutionTable_length,
      gxvalid );
 
    GXV_EXIT;
  }

Referenced by gxv_morx_subtables_validate().