コード例 #1
0
ファイル: otvbase.c プロジェクト: 1nt3g3r/libgdx
  static void
  otv_MinMax_validate( FT_Bytes       table,
                       OTV_Validator  otvalid )
  {
    FT_Bytes  p = table;
    FT_UInt   table_size;
    FT_UInt   FeatMinMaxCount;

    OTV_OPTIONAL_TABLE( MinCoord );
    OTV_OPTIONAL_TABLE( MaxCoord );


    OTV_NAME_ENTER( "MinMax" );

    OTV_LIMIT_CHECK( 6 );

    OTV_OPTIONAL_OFFSET( MinCoord );
    OTV_OPTIONAL_OFFSET( MaxCoord );
    FeatMinMaxCount = FT_NEXT_USHORT( p );

    OTV_TRACE(( " (FeatMinMaxCount = %d)\n", FeatMinMaxCount ));

    table_size = FeatMinMaxCount * 8 + 6;

    OTV_SIZE_CHECK( MinCoord );
    if ( MinCoord )
      otv_BaseCoord_validate( table + MinCoord, otvalid );

    OTV_SIZE_CHECK( MaxCoord );
    if ( MaxCoord )
      otv_BaseCoord_validate( table + MaxCoord, otvalid );

    OTV_LIMIT_CHECK( FeatMinMaxCount * 8 );

    /* FeatMinMaxRecord */
    for ( ; FeatMinMaxCount > 0; FeatMinMaxCount-- )
    {
      p += 4;                           /* skip FeatureTableTag */

      OTV_OPTIONAL_OFFSET( MinCoord );
      OTV_OPTIONAL_OFFSET( MaxCoord );

      OTV_SIZE_CHECK( MinCoord );
      if ( MinCoord )
        otv_BaseCoord_validate( table + MinCoord, otvalid );

      OTV_SIZE_CHECK( MaxCoord );
      if ( MaxCoord )
        otv_BaseCoord_validate( table + MaxCoord, otvalid );
    }

    OTV_EXIT;
  }
コード例 #2
0
ファイル: otvjstf.c プロジェクト: 0359xiaodong/libgdx
static void
otv_JstfScript_validate( FT_Bytes       table,
                         OTV_Validator  valid )
{
    FT_Bytes  p = table;
    FT_UInt   table_size;
    FT_UInt   JstfLangSysCount;

    OTV_OPTIONAL_TABLE( ExtGlyph );
    OTV_OPTIONAL_TABLE( DefJstfLangSys );


    OTV_NAME_ENTER( "JstfScript" );

    OTV_LIMIT_CHECK( 6 );
    OTV_OPTIONAL_OFFSET( ExtGlyph );
    OTV_OPTIONAL_OFFSET( DefJstfLangSys );
    JstfLangSysCount = FT_NEXT_USHORT( p );

    OTV_TRACE(( " (JstfLangSysCount = %d)\n", JstfLangSysCount ));

    table_size = JstfLangSysCount * 6 + 6;

    OTV_SIZE_CHECK( ExtGlyph );
    if ( ExtGlyph )
    {
        valid->extra1 = valid->glyph_count;
        OTV_NEST1( ExtenderGlyph );
        OTV_RUN( table + ExtGlyph, valid );
    }

    OTV_SIZE_CHECK( DefJstfLangSys );
    if ( DefJstfLangSys )
    {
        OTV_NEST2( JstfLangSys, JstfPriority );
        OTV_RUN( table + DefJstfLangSys, valid );
    }

    OTV_LIMIT_CHECK( 6 * JstfLangSysCount );

    /* JstfLangSysRecord */
    OTV_NEST2( JstfLangSys, JstfPriority );
    for ( ; JstfLangSysCount > 0; JstfLangSysCount-- )
    {
        p += 4;       /* skip JstfLangSysTag */

        OTV_RUN( table + FT_NEXT_USHORT( p ), valid );
    }

    OTV_EXIT;
}
コード例 #3
0
ファイル: otvmath.c プロジェクト: LiberatorUSA/GUCEF
  static void
  otv_MathVariants_validate( FT_Bytes       table,
                             OTV_Validator  valid )
  {
    FT_Bytes  p = table;
    FT_UInt   vcnt, hcnt, i, table_size;

    OTV_OPTIONAL_TABLE( VCoverage );
    OTV_OPTIONAL_TABLE( HCoverage );
    OTV_OPTIONAL_TABLE( Offset );


    OTV_NAME_ENTER( "MathVariants" );

    OTV_LIMIT_CHECK( 10 );

    p += 2;                       /* Skip the MinConnectorOverlap constant */
    OTV_OPTIONAL_OFFSET( VCoverage );
    OTV_OPTIONAL_OFFSET( HCoverage );
    vcnt = FT_NEXT_USHORT( p );
    hcnt = FT_NEXT_USHORT( p );

    OTV_LIMIT_CHECK( 2 * vcnt + 2 * hcnt );
    table_size = 10 + 2 * vcnt + 2 * hcnt;

    OTV_SIZE_CHECK( VCoverage );
    if ( VCoverage )
      otv_Coverage_validate( table + VCoverage, valid, vcnt );

    OTV_SIZE_CHECK( HCoverage );
    if ( HCoverage )
      otv_Coverage_validate( table + HCoverage, valid, hcnt );

    for ( i = 0; i < vcnt; ++i )
    {
      OTV_OPTIONAL_OFFSET( Offset );
      OTV_SIZE_CHECK( Offset );
      otv_MathGlyphConstruction_validate( table + Offset, valid );
    }

    for ( i = 0; i < hcnt; ++i )
    {
      OTV_OPTIONAL_OFFSET( Offset );
      OTV_SIZE_CHECK( Offset );
      otv_MathGlyphConstruction_validate( table + Offset, valid );
    }

    OTV_EXIT;
  }
コード例 #4
0
ファイル: otvmath.c プロジェクト: LiberatorUSA/GUCEF
  static void
  otv_MathConstants_validate( FT_Bytes       table,
                              OTV_Validator  valid )
  {
    FT_Bytes  p = table;
    FT_UInt   i;
    FT_UInt   table_size;

    OTV_OPTIONAL_TABLE( DeviceTableOffset );


    OTV_NAME_ENTER( "MathConstants" );

    /* 56 constants, 51 have device tables */
    OTV_LIMIT_CHECK( 2 * ( 56 + 51 ) );
    table_size = 2 * ( 56 + 51 );

    p += 4 * 2;                 /* First 4 constants have no device tables */
    for ( i = 0; i < 51; ++i )
    {
      p += 2;                                            /* skip the value */
      OTV_OPTIONAL_OFFSET( DeviceTableOffset );
      OTV_SIZE_CHECK( DeviceTableOffset );
      if ( DeviceTableOffset )
        otv_Device_validate( table + DeviceTableOffset, valid );
    }

    OTV_EXIT;
  }
コード例 #5
0
ファイル: otvbase.c プロジェクト: 1nt3g3r/libgdx
  static void
  otv_Axis_validate( FT_Bytes       table,
                     OTV_Validator  otvalid )
  {
    FT_Bytes  p = table;
    FT_UInt   table_size;

    OTV_OPTIONAL_TABLE( BaseTagList );


    OTV_NAME_ENTER( "Axis" );

    OTV_LIMIT_CHECK( 4 );
    OTV_OPTIONAL_OFFSET( BaseTagList );

    table_size = 4;

    OTV_SIZE_CHECK( BaseTagList );
    if ( BaseTagList )
      otv_BaseTagList_validate( table + BaseTagList, otvalid );

    /* BaseScriptList */
    otv_BaseScriptList_validate( table + FT_NEXT_USHORT( p ), otvalid );

    OTV_EXIT;
  }
コード例 #6
0
ファイル: otvbase.c プロジェクト: 1nt3g3r/libgdx
  static void
  otv_BaseScript_validate( FT_Bytes       table,
                           OTV_Validator  otvalid )
  {
    FT_Bytes  p = table;
    FT_UInt   table_size;
    FT_UInt   BaseLangSysCount;

    OTV_OPTIONAL_TABLE( BaseValues    );
    OTV_OPTIONAL_TABLE( DefaultMinMax );


    OTV_NAME_ENTER( "BaseScript" );

    OTV_LIMIT_CHECK( 6 );
    OTV_OPTIONAL_OFFSET( BaseValues    );
    OTV_OPTIONAL_OFFSET( DefaultMinMax );
    BaseLangSysCount = FT_NEXT_USHORT( p );

    OTV_TRACE(( " (BaseLangSysCount = %d)\n", BaseLangSysCount ));

    table_size = BaseLangSysCount * 6 + 6;

    OTV_SIZE_CHECK( BaseValues );
    if ( BaseValues )
      otv_BaseValues_validate( table + BaseValues, otvalid );

    OTV_SIZE_CHECK( DefaultMinMax );
    if ( DefaultMinMax )
      otv_MinMax_validate( table + DefaultMinMax, otvalid );

    OTV_LIMIT_CHECK( BaseLangSysCount * 6 );

    /* BaseLangSysRecord */
    for ( ; BaseLangSysCount > 0; BaseLangSysCount-- )
    {
      p += 4;       /* skip BaseLangSysTag */

      otv_MinMax_validate( table + FT_NEXT_USHORT( p ), otvalid );
    }

    OTV_EXIT;
  }
コード例 #7
0
ファイル: otvmath.c プロジェクト: AdmiralCurtiss/pcsx2
  static void
  otv_MathItalicsCorrectionInfo_validate( FT_Bytes       table,
                                          OTV_Validator  otvalid,
                                          FT_Int         isItalic )
  {
    FT_Bytes  p = table;
    FT_UInt   i, cnt, table_size;

    OTV_OPTIONAL_TABLE( Coverage );
    OTV_OPTIONAL_TABLE( DeviceTableOffset );

    FT_UNUSED( isItalic );  /* only used if tracing is active */


    OTV_NAME_ENTER( isItalic ? "MathItalicsCorrectionInfo"
                             : "MathTopAccentAttachment" );

    OTV_LIMIT_CHECK( 4 );

    OTV_OPTIONAL_OFFSET( Coverage );
    cnt = FT_NEXT_USHORT( p );

    OTV_LIMIT_CHECK( 4 * cnt );
    table_size = 4 + 4 * cnt;

    OTV_SIZE_CHECK( Coverage );
    otv_Coverage_validate( table + Coverage, otvalid, (FT_Int)cnt );

    for ( i = 0; i < cnt; ++i )
    {
      p += 2;                                            /* Skip the value */
      OTV_OPTIONAL_OFFSET( DeviceTableOffset );
      OTV_SIZE_CHECK( DeviceTableOffset );
      if ( DeviceTableOffset )
        otv_Device_validate( table + DeviceTableOffset, otvalid );
    }

    OTV_EXIT;
  }
コード例 #8
0
ファイル: otvmath.c プロジェクト: LiberatorUSA/GUCEF
  static void
  otv_MathKernInfo_validate( FT_Bytes       table,
                             OTV_Validator  valid )
  {
    FT_Bytes  p = table;
    FT_UInt   i, j, cnt, table_size;

    OTV_OPTIONAL_TABLE( Coverage );
    OTV_OPTIONAL_TABLE( MKRecordOffset );


    OTV_NAME_ENTER( "MathKernInfo" );

    OTV_LIMIT_CHECK( 4 );

    OTV_OPTIONAL_OFFSET( Coverage );
    cnt = FT_NEXT_USHORT( p );

    OTV_LIMIT_CHECK( 8 * cnt );
    table_size = 4 + 8 * cnt;

    OTV_SIZE_CHECK( Coverage );
    otv_Coverage_validate( table + Coverage, valid, cnt );

    for ( i = 0; i < cnt; ++i )
    {
      for ( j = 0; j < 4; ++j )
      {
        OTV_OPTIONAL_OFFSET( MKRecordOffset );
        OTV_SIZE_CHECK( MKRecordOffset );
        if ( MKRecordOffset )
          otv_MathKern_validate( table + MKRecordOffset, valid );
      }
    }

    OTV_EXIT;
  }
コード例 #9
0
ファイル: otvbase.c プロジェクト: 1nt3g3r/libgdx
  otv_BASE_validate( FT_Bytes      table,
                     FT_Validator  ftvalid )
  {
    OTV_ValidatorRec  otvalidrec;
    OTV_Validator     otvalid = &otvalidrec;
    FT_Bytes          p       = table;
    FT_UInt           table_size;

    OTV_OPTIONAL_TABLE( HorizAxis );
    OTV_OPTIONAL_TABLE( VertAxis  );


    otvalid->root = ftvalid;

    FT_TRACE3(( "validating BASE table\n" ));
    OTV_INIT;

    OTV_LIMIT_CHECK( 6 );

    if ( FT_NEXT_ULONG( p ) != 0x10000UL )      /* Version */
      FT_INVALID_FORMAT;

    table_size = 6;

    OTV_OPTIONAL_OFFSET( HorizAxis );
    OTV_SIZE_CHECK( HorizAxis );
    if ( HorizAxis )
      otv_Axis_validate( table + HorizAxis, otvalid );

    OTV_OPTIONAL_OFFSET( VertAxis );
    OTV_SIZE_CHECK( VertAxis );
    if ( VertAxis )
      otv_Axis_validate( table + VertAxis, otvalid );

    FT_TRACE4(( "\n" ));
  }
コード例 #10
0
ファイル: otvmath.c プロジェクト: LiberatorUSA/GUCEF
  static void
  otv_MathKern_validate( FT_Bytes       table,
                         OTV_Validator  valid )
  {
    FT_Bytes  p = table;
    FT_UInt   i, cnt, table_size;

    OTV_OPTIONAL_TABLE( DeviceTableOffset );


    /* OTV_NAME_ENTER( "MathKern" );*/

    OTV_LIMIT_CHECK( 2 );

    cnt = FT_NEXT_USHORT( p );

    OTV_LIMIT_CHECK( 4 * cnt + 2 );
    table_size = 4 + 4 * cnt;

    /* Heights */
    for ( i = 0; i < cnt; ++i )
    {
      p += 2;                                            /* Skip the value */
      OTV_OPTIONAL_OFFSET( DeviceTableOffset );
      OTV_SIZE_CHECK( DeviceTableOffset );
      if ( DeviceTableOffset )
        otv_Device_validate( table + DeviceTableOffset, valid );
    }

    /* One more Kerning value */
    for ( i = 0; i < cnt + 1; ++i )
    {
      p += 2;                                            /* Skip the value */
      OTV_OPTIONAL_OFFSET( DeviceTableOffset );
      OTV_SIZE_CHECK( DeviceTableOffset );
      if ( DeviceTableOffset )
        otv_Device_validate( table + DeviceTableOffset, valid );
    }

    OTV_EXIT;
  }
コード例 #11
0
ファイル: otvmath.c プロジェクト: LiberatorUSA/GUCEF
  static void
  otv_GlyphAssembly_validate( FT_Bytes       table,
                              OTV_Validator  valid )
  {
    FT_Bytes  p = table;
    FT_UInt   pcnt, table_size;
    FT_UInt   i;

    OTV_OPTIONAL_TABLE( DeviceTableOffset );


    /* OTV_NAME_ENTER( "GlyphAssembly" ); */

    OTV_LIMIT_CHECK( 6 );

    p += 2;                           /* Skip the Italics Correction value */
    OTV_OPTIONAL_OFFSET( DeviceTableOffset );
    pcnt = FT_NEXT_USHORT( p );

    OTV_LIMIT_CHECK( 8 * pcnt );
    table_size = 6 + 8 * pcnt;

    OTV_SIZE_CHECK( DeviceTableOffset );
    if ( DeviceTableOffset )
      otv_Device_validate( table + DeviceTableOffset, valid );

    for ( i = 0; i < pcnt; ++i )
    {
      FT_UInt  gid;


      gid = FT_NEXT_USHORT( p );
      if ( gid >= valid->glyph_count )
        FT_INVALID_GLYPH_ID;
      p += 2*4;             /* skip the Start, End, Full, and Flags fields */
    }

    /* OTV_EXIT; */
  }
コード例 #12
0
ファイル: otvmath.c プロジェクト: LiberatorUSA/GUCEF
  static void
  otv_MathGlyphConstruction_validate( FT_Bytes       table,
                                      OTV_Validator  valid )
  {
    FT_Bytes  p = table;
    FT_UInt   vcnt, table_size;
    FT_UInt   i;

    OTV_OPTIONAL_TABLE( GlyphAssembly );


    /* OTV_NAME_ENTER( "MathGlyphConstruction" ); */

    OTV_LIMIT_CHECK( 4 );

    OTV_OPTIONAL_OFFSET( GlyphAssembly );
    vcnt = FT_NEXT_USHORT( p );

    OTV_LIMIT_CHECK( 4 * vcnt );
    table_size = 4 + 4 * vcnt;

    for ( i = 0; i < vcnt; ++i )
    {
      FT_UInt  gid;


      gid = FT_NEXT_USHORT( p );
      if ( gid >= valid->glyph_count )
        FT_INVALID_GLYPH_ID;
      p += 2;                          /* skip the size */
    }

    OTV_SIZE_CHECK( GlyphAssembly );
    if ( GlyphAssembly )
      otv_GlyphAssembly_validate( table+GlyphAssembly, valid );

    /* OTV_EXIT; */
  }
コード例 #13
0
ファイル: otvjstf.c プロジェクト: 0359xiaodong/libgdx
static void
otv_JstfPriority_validate( FT_Bytes       table,
                           OTV_Validator  valid )
{
    FT_Bytes  p = table;
    FT_UInt   table_size;
    FT_UInt   gsub_lookup_count, gpos_lookup_count;

    OTV_OPTIONAL_TABLE( ShrinkageEnableGSUB  );
    OTV_OPTIONAL_TABLE( ShrinkageDisableGSUB );
    OTV_OPTIONAL_TABLE( ShrinkageEnableGPOS  );
    OTV_OPTIONAL_TABLE( ShrinkageDisableGPOS );
    OTV_OPTIONAL_TABLE( ExtensionEnableGSUB  );
    OTV_OPTIONAL_TABLE( ExtensionDisableGSUB );
    OTV_OPTIONAL_TABLE( ExtensionEnableGPOS  );
    OTV_OPTIONAL_TABLE( ExtensionDisableGPOS );
    OTV_OPTIONAL_TABLE( ShrinkageJstfMax );
    OTV_OPTIONAL_TABLE( ExtensionJstfMax );


    OTV_ENTER;
    OTV_TRACE(( "JstfPriority table\n" ));

    OTV_LIMIT_CHECK( 20 );

    gsub_lookup_count = valid->extra1;
    gpos_lookup_count = valid->extra2;

    table_size = 20;

    valid->extra1 = gsub_lookup_count;

    OTV_OPTIONAL_OFFSET( ShrinkageEnableGSUB );
    OTV_SIZE_CHECK( ShrinkageEnableGSUB );
    if ( ShrinkageEnableGSUB )
        otv_x_ux( table + ShrinkageEnableGSUB, valid );

    OTV_OPTIONAL_OFFSET( ShrinkageDisableGSUB );
    OTV_SIZE_CHECK( ShrinkageDisableGSUB );
    if ( ShrinkageDisableGSUB )
        otv_x_ux( table + ShrinkageDisableGSUB, valid );

    valid->extra1 = gpos_lookup_count;

    OTV_OPTIONAL_OFFSET( ShrinkageEnableGPOS );
    OTV_SIZE_CHECK( ShrinkageEnableGPOS );
    if ( ShrinkageEnableGPOS )
        otv_x_ux( table + ShrinkageEnableGPOS, valid );

    OTV_OPTIONAL_OFFSET( ShrinkageDisableGPOS );
    OTV_SIZE_CHECK( ShrinkageDisableGPOS );
    if ( ShrinkageDisableGPOS )
        otv_x_ux( table + ShrinkageDisableGPOS, valid );

    OTV_OPTIONAL_OFFSET( ShrinkageJstfMax );
    OTV_SIZE_CHECK( ShrinkageJstfMax );
    if ( ShrinkageJstfMax )
    {
        /* XXX: check lookup types? */
        OTV_NEST2( JstfMax, JstfLookup );
        OTV_RUN( table + ShrinkageJstfMax, valid );
    }

    valid->extra1 = gsub_lookup_count;

    OTV_OPTIONAL_OFFSET( ExtensionEnableGSUB );
    OTV_SIZE_CHECK( ExtensionEnableGSUB );
    if ( ExtensionEnableGSUB )
        otv_x_ux( table + ExtensionEnableGSUB, valid );

    OTV_OPTIONAL_OFFSET( ExtensionDisableGSUB );
    OTV_SIZE_CHECK( ExtensionDisableGSUB );
    if ( ExtensionDisableGSUB )
        otv_x_ux( table + ExtensionDisableGSUB, valid );

    valid->extra1 = gpos_lookup_count;

    OTV_OPTIONAL_OFFSET( ExtensionEnableGPOS );
    OTV_SIZE_CHECK( ExtensionEnableGPOS );
    if ( ExtensionEnableGPOS )
        otv_x_ux( table + ExtensionEnableGPOS, valid );

    OTV_OPTIONAL_OFFSET( ExtensionDisableGPOS );
    OTV_SIZE_CHECK( ExtensionDisableGPOS );
    if ( ExtensionDisableGPOS )
        otv_x_ux( table + ExtensionDisableGPOS, valid );

    OTV_OPTIONAL_OFFSET( ExtensionJstfMax );
    OTV_SIZE_CHECK( ExtensionJstfMax );
    if ( ExtensionJstfMax )
    {
        /* XXX: check lookup types? */
        OTV_NEST2( JstfMax, JstfLookup );
        OTV_RUN( table + ExtensionJstfMax, valid );
    }

    valid->extra1 = gsub_lookup_count;
    valid->extra2 = gpos_lookup_count;

    OTV_EXIT;
}
コード例 #14
0
ファイル: otvgdef.c プロジェクト: BlairArchibald/Alexandria
  otv_GDEF_validate( FT_Bytes      table,
                     FT_Bytes      gsub,
                     FT_Bytes      gpos,
                     FT_Validator  ftvalid )
  {
    OTV_ValidatorRec  validrec;
    OTV_Validator     valid = &validrec;
    FT_Bytes          p     = table;
    FT_UInt           table_size;
    FT_Bool           need_MarkAttachClassDef;

    OTV_OPTIONAL_TABLE( GlyphClassDef );
    OTV_OPTIONAL_TABLE( AttachListOffset );
    OTV_OPTIONAL_TABLE( LigCaretListOffset );
    OTV_OPTIONAL_TABLE( MarkAttachClassDef );


    valid->root = ftvalid;

    FT_TRACE3(( "validating GDEF table\n" ));
    OTV_INIT;

    OTV_LIMIT_CHECK( 12 );

    if ( FT_NEXT_ULONG( p ) != 0x10000UL )          /* Version */
      FT_INVALID_FORMAT;

    /* MarkAttachClassDef has been added to the OpenType */
    /* specification without increasing GDEF's version,  */
    /* so we use this ugly hack to find out whether the  */
    /* table is needed actually.                         */

    need_MarkAttachClassDef = FT_BOOL(
      otv_GSUBGPOS_have_MarkAttachmentType_flag( gsub ) ||
      otv_GSUBGPOS_have_MarkAttachmentType_flag( gpos ) );

    if ( need_MarkAttachClassDef )
      table_size = 12;              /* OpenType >= 1.2 */
    else
      table_size = 10;              /* OpenType < 1.2  */

    OTV_OPTIONAL_OFFSET( GlyphClassDef );
    OTV_SIZE_CHECK( GlyphClassDef );
    if ( GlyphClassDef )
      otv_ClassDef_validate( table + GlyphClassDef, valid );

    OTV_OPTIONAL_OFFSET( AttachListOffset );
    OTV_SIZE_CHECK( AttachListOffset );
    if ( AttachListOffset )
    {
      OTV_NEST2( AttachList, AttachPoint );
      OTV_RUN( table + AttachListOffset, valid );
    }

    OTV_OPTIONAL_OFFSET( LigCaretListOffset );
    OTV_SIZE_CHECK( LigCaretListOffset );
    if ( LigCaretListOffset )
    {
      OTV_NEST3( LigCaretList, LigGlyph, CaretValue );
      OTV_RUN( table + LigCaretListOffset, valid );
    }

    if ( need_MarkAttachClassDef )
    {
      OTV_OPTIONAL_OFFSET( MarkAttachClassDef );
      OTV_SIZE_CHECK( MarkAttachClassDef );
      if ( MarkAttachClassDef )
        otv_ClassDef_validate( table + MarkAttachClassDef, valid );
    }

    FT_TRACE4(( "\n" ));
  }
コード例 #15
0
ファイル: otvgdef.c プロジェクト: ImageMagick/ttf
  otv_GDEF_validate( FT_Bytes      table,
                     FT_Bytes      gsub,
                     FT_Bytes      gpos,
                     FT_UInt       glyph_count,
                     FT_Validator  ftvalid )
  {
    OTV_ValidatorRec  otvalidrec;
    OTV_Validator     otvalid = &otvalidrec;
    FT_Bytes          p       = table;
    FT_UInt           table_size;
    FT_UShort         version;
    FT_Bool           need_MarkAttachClassDef = 1;

    OTV_OPTIONAL_TABLE( GlyphClassDef );
    OTV_OPTIONAL_TABLE( AttachListOffset );
    OTV_OPTIONAL_TABLE( LigCaretListOffset );
    OTV_OPTIONAL_TABLE( MarkAttachClassDef );
    OTV_OPTIONAL_TABLE( MarkGlyphSetsDef );

    OTV_OPTIONAL_TABLE32( itemVarStore );


    otvalid->root = ftvalid;

    FT_TRACE3(( "validating GDEF table\n" ));
    OTV_INIT;

    OTV_LIMIT_CHECK( 4 );

    if ( FT_NEXT_USHORT( p ) != 1 )  /* majorVersion */
      FT_INVALID_FORMAT;

    version = FT_NEXT_USHORT( p );   /* minorVersion */

    table_size = 10;
    switch ( version )
    {
    case 0:
      /* MarkAttachClassDef has been added to the OpenType */
      /* specification without increasing GDEF's version,  */
      /* so we use this ugly hack to find out whether the  */
      /* table is needed actually.                         */

      need_MarkAttachClassDef = FT_BOOL(
        otv_GSUBGPOS_have_MarkAttachmentType_flag( gsub ) ||
        otv_GSUBGPOS_have_MarkAttachmentType_flag( gpos ) );

      if ( need_MarkAttachClassDef )
      {
        OTV_LIMIT_CHECK( 8 );
        table_size += 2;
      }
      else
        OTV_LIMIT_CHECK( 6 );  /* OpenType < 1.2 */

      break;

    case 2:
      OTV_LIMIT_CHECK( 10 );
      table_size += 4;
      break;

    case 3:
      OTV_LIMIT_CHECK( 14 );
      table_size += 8;
      break;

    default:
      FT_INVALID_FORMAT;
    }

    otvalid->glyph_count = glyph_count;

    OTV_OPTIONAL_OFFSET( GlyphClassDef );
    OTV_SIZE_CHECK( GlyphClassDef );
    if ( GlyphClassDef )
      otv_ClassDef_validate( table + GlyphClassDef, otvalid );

    OTV_OPTIONAL_OFFSET( AttachListOffset );
    OTV_SIZE_CHECK( AttachListOffset );
    if ( AttachListOffset )
    {
      OTV_NEST2( AttachList, AttachPoint );
      OTV_RUN( table + AttachListOffset, otvalid );
    }

    OTV_OPTIONAL_OFFSET( LigCaretListOffset );
    OTV_SIZE_CHECK( LigCaretListOffset );
    if ( LigCaretListOffset )
    {
      OTV_NEST3( LigCaretList, LigGlyph, CaretValue );
      OTV_RUN( table + LigCaretListOffset, otvalid );
    }

    if ( need_MarkAttachClassDef )
    {
      OTV_OPTIONAL_OFFSET( MarkAttachClassDef );
      OTV_SIZE_CHECK( MarkAttachClassDef );
      if ( MarkAttachClassDef )
        otv_ClassDef_validate( table + MarkAttachClassDef, otvalid );
    }

    if ( version > 0 )
    {
      OTV_OPTIONAL_OFFSET( MarkGlyphSetsDef );
      OTV_SIZE_CHECK( MarkGlyphSetsDef );
      if ( MarkGlyphSetsDef )
        otv_MarkGlyphSets_validate( table + MarkGlyphSetsDef, otvalid );
    }

    if ( version > 2 )
    {
      OTV_OPTIONAL_OFFSET32( itemVarStore );
      OTV_SIZE_CHECK32( itemVarStore );
      if ( itemVarStore )
        OTV_TRACE(( "  [omitting itemVarStore validation]\n" )); /* XXX */
    }

    FT_TRACE4(( "\n" ));
  }
コード例 #16
0
ファイル: otvbase.c プロジェクト: GWRon/pub.mod-NG
  otv_BASE_validate( FT_Bytes      table,
                     FT_Validator  ftvalid )
  {
    OTV_ValidatorRec  otvalidrec;
    OTV_Validator     otvalid = &otvalidrec;
    FT_Bytes          p       = table;
    FT_UInt           table_size;
    FT_UShort         version;

    OTV_OPTIONAL_TABLE( HorizAxis );
    OTV_OPTIONAL_TABLE( VertAxis  );

    OTV_OPTIONAL_TABLE32( itemVarStore );


    otvalid->root = ftvalid;

    FT_TRACE3(( "validating BASE table\n" ));
    OTV_INIT;

    OTV_LIMIT_CHECK( 4 );

    if ( FT_NEXT_USHORT( p ) != 1 )  /* majorVersion */
      FT_INVALID_FORMAT;

    version = FT_NEXT_USHORT( p );   /* minorVersion */

    table_size = 8;
    switch ( version )
    {
    case 0:
      OTV_LIMIT_CHECK( 4 );
      break;

    case 1:
      OTV_LIMIT_CHECK( 8 );
      table_size += 4;
      break;

    default:
      FT_INVALID_FORMAT;
    }

    OTV_OPTIONAL_OFFSET( HorizAxis );
    OTV_SIZE_CHECK( HorizAxis );
    if ( HorizAxis )
      otv_Axis_validate( table + HorizAxis, otvalid );

    OTV_OPTIONAL_OFFSET( VertAxis );
    OTV_SIZE_CHECK( VertAxis );
    if ( VertAxis )
      otv_Axis_validate( table + VertAxis, otvalid );

    if ( version > 0 )
    {
      OTV_OPTIONAL_OFFSET32( itemVarStore );
      OTV_SIZE_CHECK32( itemVarStore );
      if ( itemVarStore )
        OTV_TRACE(( "  [omitting itemVarStore validation]\n" )); /* XXX */
    }

    FT_TRACE4(( "\n" ));
  }