gxvbsln.c

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Hash : 99aa14c2
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Date : 2005-09-05T19:31:27

Fixes for `make multi' and using C++ compiler. * gxvalid/gxvcommn.c (gxv_set_length_by_ushort_offset, gxv_set_length_by_ulong_offset, gxv_array_getlimits_byte, gxv_array_getlimits_ushort): Declare with FT_LOCAL_DEF. (gxv_compare_ranges): Make it static. (gxv_LookupTable_fmt0_validate, gxv_LookupTable_fmt2_validate, gxv_LookupTable_fmt4_validate, gxv_LookupTable_fmt6_validate, gxv_LookupTable_fmt8_validate, gxv_LookupTable_validate): Improve trace messages. (gxv_StateArray_validate, gxv_XStateArray_validate): s/class/clazz/. (GXV_STATETABLE_HEADER_SIZE, GXV_STATEHEADER_SIZE, GXV_XSTATETABLE_HEADER_SIZE, GXV_XSTATEHEADER_SIZE): Move to gxvcommn.h. * gxvalid/gxvcommn.h: Add prototypes for gxv_StateTable_subtable_setup, gxv_XStateTable_subtable_setup, gxv_XStateTable_validate, gxv_array_getlimits_byte, gxv_array_getlimits_ushort, gxv_set_length_by_ushort_offset, gxv_set_length_by_ulong_offset, gxv_odtect_add_range, gxv_odtect_validate. (GXV_STATETABLE_HEADER_SIZE, GXV_STATEHEADER_SIZE, GXV_XSTATETABLE_HEADER_SIZE, GXV_XSTATEHEADER_SIZE): Moved from gxvcommn.c. * src/gxvalid/gxvbsln.c (gxv_bsln_LookupValue_validate, gxv_bsln_parts_fmt1_validate): Improve trace messages. * gxvalid/gxvfeat.c: Split off predefined registry stuff to... * gxvalid/gxvfeat.h: New file. * gxvalid/gxvjust.c (gxv_just_wdc_entry_validate): Improve trace message. * gxvalid/gxvkern.c (GXV_kern_Dialect): Add KERN_DIALECT_UNKNOWN. (gxv_kern_subtable_fmt1_valueTable_load, gxv_kern_subtable_fmt1_subtable_setup, gxv_kern_subtable_fmt1_entry_validate): Fix C++ compiler errors. (gxv_kern_coverage_validate): Use KERN_DIALECT_UNKWOWN. Improve trace message. (gxv_kern_validate_generic): Fix C++ compiler error. Improve trace message. (gxv_kern_validate_classic): Fix C++ compiler error. * gxvalid/gxvmort0.c (gxv_mort_subtable_type0_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmort1.c (gxv_mort_subtable_type1_substitutionTable_load, gxv_mort_subtable_type1_subtable_setup): Fix C++ compiler errors. (gxv_mort_subtable_type1_substTable_validate): Improve trace message. (gxv_mort_subtable_type1_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmort2.c (gxv_mort_subtable_type2_opttable_load, gxv_mort_subtable_type2_subtable_setup, gxv_mort_subtable_type2_ligActionOffset_validate, gxv_mort_subtable_type2_ligatureTable_validate): Fix C++ compiler errors. (gxv_mort_subtable_type2_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmort4.c (gxv_mort_subtable_type4_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmort5.c (gxv_mort_subtable_type5_subtable_setup, gxv_mort_subtable_type5_InsertList_validate): Fix C++ compiler errors. (gxv_mort_subtable_type5_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmort.c: Include gxvfeat.h. (gxv_mort_featurearray_validate, gxv_mort_coverage_validate): Declare with FT_LOCAL_DEF. (gxv_mort_subtables_validate, gxv_mort_validate): Improve trace messages. * gxvalid/gxvmort.h (gxv_mort_feature_validate): Remove. * gxvalid/gxvmorx0.c (gxv_morx_subtable_type0_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmorx1.c (gxv_morx_subtable_type1_substitutionTable_load, gxv_morx_subtable_type1_subtable_setup, gxv_morx_subtable_type1_entry_validate, gxv_morx_subtable_type1_substitutionTable_validate): Fix C++ compiler errors. (gxv_morx_subtable_type1_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmorx2.c (gxv_morx_subtable_type2_opttable_load, gxv_morx_subtable_type2_subtable_setup, gxv_morx_subtable_type2_ligActionIndex_validate, gxv_morx_subtable_type2_ligatureTable_validate): Fix C++ compiler errors. (gxv_morx_subtable_type2_validate): Declare with FT_LOCAL_DEF. Fix typo. * gxvalid/gxvmorx4.c (gxv_morx_subtable_type4_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmorx5.c (gxv_morx_subtable_type5_insertionGlyph_load, gxv_morx_subtable_type5_subtable_setup): Fix C++ compiler error. (gxv_morx_subtable_type5_validate): Declare with FT_LOCAL_DEF. * gxvalid/gxvmorx.c (gxv_morx_subtables_validate, gxv_morx_validate): Improve trace message. * gxvalid/gxvopbd.c (gxv_opbd_LookupFmt4_transit): Fix compiler warnings. (gxv_opbd_validate): Improve trace message. * gxvalid/gxvprop.c: Decorate constants with `U' and `L' where appropriate. (gxv_prop_zero_advance_validate, gxv_prop_validate): Improve trace message. * gxvalid/gxvtrak.c (gxv_trak_trackTable_validate): Remove unused parameter. Update all callers. (gxv_trak_validate): Improve trace message. * rules.mk (GXV_DRV_H): Add gxvfeat.h.

src/gxvalid/gxvbsln.c

/***************************************************************************/
/*                                                                         */
/*  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_LookupValueDesc  value,
                                 GXV_Validator        valid )
  {
    FT_UShort   v = value.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_LookupValueDesc  base_value,
                               FT_Bytes             lookuptbl_limit,
                               GXV_Validator        valid )
  {
    FT_Bytes             p;
    FT_Bytes             limit;
    FT_UShort            offset;
    GXV_LookupValueDesc  value;


    offset = base_value.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 */

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