ftxgpos.c

神龙卡开发原代码

    count = m2a->Mark2Count = GET_UShort();
    
    FORGET_Frame();

    m2a->Mark2Record = NULL;

    if ( ALLOC_ARRAY( m2a->Mark2Record, count, TTO_Mark2Record ) )
      return error;

    m2r = m2a->Mark2Record;

    for ( m = 0; m < count; m++ )
    {
      m2r[m].Mark2Anchor = NULL;

      if ( ALLOC_ARRAY( m2r[m].Mark2Anchor, num_classes, TTO_Anchor ) )
        goto Fail;

      m2an = m2r[m].Mark2Anchor;

      for ( n = 0; n < num_classes; n++ )
      {
        if ( ACCESS_Frame( 2L ) )
          goto Fail;

        new_offset = GET_UShort() + base_offset;

        FORGET_Frame();

        cur_offset = FILE_Pos();
        if ( FILE_Seek( new_offset ) ||
             ( error = Load_Anchor( &m2an[n], input ) ) != TT_Err_Ok )
          goto Fail;
        (void)FILE_Seek( cur_offset );
      }
    }

    return TT_Err_Ok;

  Fail:
    for ( m = 0; m < count; m++ )
    {
      m2an = m2r[m].Mark2Anchor;
      
      for ( n = 0; n < num_classes; n++ )
        Free_Anchor( &m2an[n] );

      FREE( m2an );
    }

    FREE( m2r );
    return error;
  }


  static void  Free_Mark2Array( TTO_Mark2Array*  m2a,
                                UShort           num_classes )
  {
    UShort            m, n, count;

    TTO_Mark2Record*  m2r;
    TTO_Anchor*       m2an;


    if ( m2a->Mark2Record )
    {
      count = m2a->Mark2Count;
      m2r   = m2a->Mark2Record;

      for ( m = 0; m < count; m++ )
      {
        m2an = m2r[m].Mark2Anchor;

        for ( n = 0; n < num_classes; n++ )
          Free_Anchor( &m2an[n] );

        FREE( m2an );
      }

      FREE( m2r );
    }
  }


  /* MarkMarkPosFormat1 */

  TT_Error  Load_MarkMarkPos( TTO_MarkMarkPos*  mmp,
                              PFace             input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    ULong  cur_offset, new_offset, base_offset;


    base_offset = FILE_Pos();

    if ( ACCESS_Frame( 4L ) )
      return error;

    mmp->PosFormat = GET_UShort();
    new_offset     = GET_UShort() + base_offset;

    FORGET_Frame();

    cur_offset = FILE_Pos();
    if ( FILE_Seek( new_offset ) ||
         ( error = Load_Coverage( &mmp->Mark1Coverage,
                                  input ) ) != TT_Err_Ok )
      return error;
    (void)FILE_Seek( cur_offset );

    if ( ACCESS_Frame( 2L ) )
      goto Fail3;

    new_offset = GET_UShort() + base_offset;

    FORGET_Frame();

    cur_offset = FILE_Pos();
    if ( FILE_Seek( new_offset ) ||
         ( error = Load_Coverage( &mmp->Mark2Coverage,
                                  input ) ) != TT_Err_Ok )
      goto Fail3;
    (void)FILE_Seek( cur_offset );

    if ( ACCESS_Frame( 4L ) )
      goto Fail2;

    mmp->ClassCount = GET_UShort();
    new_offset      = GET_UShort() + base_offset;

    FORGET_Frame();

    cur_offset = FILE_Pos();
    if ( FILE_Seek( new_offset ) ||
         ( error = Load_MarkArray( &mmp->Mark1Array, input ) ) != TT_Err_Ok )
      goto Fail2;
    (void)FILE_Seek( cur_offset );

    if ( ACCESS_Frame( 2L ) )
      goto Fail1;

    new_offset = GET_UShort() + base_offset;

    FORGET_Frame();

    cur_offset = FILE_Pos();
    if ( FILE_Seek( new_offset ) ||
         ( error = Load_Mark2Array( &mmp->Mark2Array, mmp->ClassCount,
                                    input ) ) != TT_Err_Ok )
      goto Fail1;

    return TT_Err_Ok;

  Fail1:
    Free_MarkArray( &mmp->Mark1Array );

  Fail2:
    Free_Coverage( &mmp->Mark2Coverage );

  Fail3:
    Free_Coverage( &mmp->Mark1Coverage );
    return error;
  }


  void  Free_MarkMarkPos( TTO_MarkMarkPos*  mmp )
  {
    Free_Mark2Array( &mmp->Mark2Array, mmp->ClassCount );
    Free_MarkArray( &mmp->Mark1Array );
    Free_Coverage( &mmp->Mark2Coverage );
    Free_Coverage( &mmp->Mark1Coverage );
  }


  /* LookupType 7 */

  /* PosRule */

  static TT_Error  Load_PosRule( TTO_PosRule*  pr,
                                 PFace         input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    UShort                n, count;
    UShort*               i;

    TTO_PosLookupRecord*  plr;


    if ( ACCESS_Frame( 4L ) )
      return error;

    pr->GlyphCount = GET_UShort();
    pr->PosCount   = GET_UShort();

    FORGET_Frame();

    pr->Input = NULL;

    count = pr->GlyphCount - 1;         /* only GlyphCount - 1 elements */

    if ( ALLOC_ARRAY( pr->Input, count, UShort ) )
      return error;

    i = pr->Input;

    if ( ACCESS_Frame( count * 2L ) )
      goto Fail2;

    for ( n = 0; n < count; n++ )
      i[n] = GET_UShort();

    FORGET_Frame();

    pr->PosLookupRecord = NULL;

    count = pr->PosCount;

    if ( ALLOC_ARRAY( pr->PosLookupRecord, count, TTO_PosLookupRecord ) )
      goto Fail2;

    plr = pr->PosLookupRecord;

    if ( ACCESS_Frame( count * 4L ) )
      goto Fail1;

    for ( n = 0; n < count; n++ )
    {
      plr[n].SequenceIndex   = GET_UShort();
      plr[n].LookupListIndex = GET_UShort();
    }

    FORGET_Frame();

    return TT_Err_Ok;

  Fail1:
    FREE( plr );

  Fail2:
    FREE( i );
    return error;
  }


  static void  Free_PosRule( TTO_PosRule*  pr )
  {
    FREE( pr->PosLookupRecord );
    FREE( pr->Input );
  }


  /* PosRuleSet */

  static TT_Error  Load_PosRuleSet( TTO_PosRuleSet*  prs,
                                    PFace            input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    UShort        n, count;
    ULong         cur_offset, new_offset, base_offset;

    TTO_PosRule*  pr;


    base_offset = FILE_Pos();

    if ( ACCESS_Frame( 2L ) )
      return error;

    count = prs->PosRuleCount = GET_UShort();

    FORGET_Frame();

    prs->PosRule = NULL;

    if ( ALLOC_ARRAY( prs->PosRule, count, TTO_PosRule ) )
      return error;

    pr = prs->PosRule;

    for ( n = 0; n < count; n++ )
    {
      if ( ACCESS_Frame( 2L ) )
        goto Fail;

      new_offset = GET_UShort() + base_offset;

      FORGET_Frame();

      cur_offset = FILE_Pos();
      if ( FILE_Seek( new_offset ) ||
           ( error = Load_PosRule( &pr[n], input ) ) != TT_Err_Ok )
        goto Fail;
      (void)FILE_Seek( cur_offset );
    }

    return TT_Err_Ok;

  Fail:
    for ( n = 0; n < count; n++ )
      Free_PosRule( &pr[n] );

    FREE( pr );
    return error;
  }


  static void  Free_PosRuleSet( TTO_PosRuleSet*  prs )
  {
    UShort        n, count;

    TTO_PosRule*  pr;


    if ( prs->PosRule )
    {
      count = prs->PosRuleCount;
      pr    = prs->PosRule;

      for ( n = 0; n < count; n++ )
        Free_PosRule( &pr[n] );

      FREE( pr );
    }
  }


  /* ContextPosFormat1 */

  static TT_Error  Load_ContextPos1( TTO_ContextPosFormat1*  cpf1,
                                     PFace                   input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    UShort           n, count;
    ULong            cur_offset, new_offset, base_offset;

    TTO_PosRuleSet*  prs;


    base_offset = FILE_Pos() - 2L;

    if ( ACCESS_Frame( 2L ) )
      return error;

    new_offset = GET_UShort() + base_offset;

    FORGET_Frame();

    cur_offset = FILE_Pos();
    if ( FILE_Seek( new_offset ) ||
         ( error = Load_Coverage( &cpf1->Coverage, input ) ) != TT_Err_Ok )
      return error;
    (void)FILE_Seek( cur_offset );

    if ( ACCESS_Frame( 2L ) )
      goto Fail2;

    count = cpf1->PosRuleSetCount = GET_UShort();

    FORGET_Frame();

    cpf1->PosRuleSet = NULL;

    if ( ALLOC_ARRAY( cpf1->PosRuleSet, count, TTO_PosRuleSet ) )
      goto Fail2;

    prs = cpf1->PosRuleSet;

    for ( n = 0; n < count; n++ )
    {
      if ( ACCESS_Frame( 2L ) )
        goto Fail1;

      new_offset = GET_UShort() + base_offset;

      FORGET_Frame();

      cur_offset = FILE_Pos();
      if ( FILE_Seek( new_offset ) ||
           ( error = Load_PosRuleSet( &prs[n], input ) ) != TT_Err_Ok )
        goto Fail1;
      (void)FILE_Seek( cur_offset );
    }

    return TT_Err_Ok;

  Fail1:
    for ( n = 0; n < count; n++ )
      Free_PosRuleSet( &prs[n] );

    FREE( prs );

  Fail2:
    Free_Coverage( &cpf1->Coverage );
    return error;
  }


  static void  Free_Context1( TTO_ContextPosFormat1*  cpf1 )
  {
    UShort           n, count;

    TTO_PosRuleSet*  prs;


    if ( cpf1->PosRuleSet )
    {
      count = cpf1->PosRuleSetCount;
      prs   = cpf1->PosRuleSet;

      for ( n = 0; n < count; n++ )
        Free_PosRuleSet( &prs[n] );

      FREE( prs );
    }

    Free_Coverage( &cpf1->Coverage );
  }


  /* PosClassRule */

  static TT_Error  Load_PosClassRule( TTO_ContextPosFormat2*  cpf2,
                                      TTO_PosClassRule*       pcr,
                                      PFace                   input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    UShort                n, count;

    UShort*               c;
    TTO_PosLookupRecord*  plr;
    Bool*                 d;


    if ( ACCESS_Frame( 4L ) )
      return error;

    pcr->GlyphCount = GET_UShort();
    pcr->PosCount   = GET_UShort();

    FORGET_Frame();

    if ( pcr->GlyphCount > cpf2->MaxContextLength )
      cpf2->MaxContextLength = pcr->GlyphCount;

    pcr->Class = NULL;

    count = pcr->GlyphCount - 1;        /* only GlyphCount - 1 elements */

    if ( ALLOC_ARRAY( pcr->Class, count, UShort ) )
      return error;

    c = pcr->Class;
    d = cpf2->ClassDef.Defined;

    if ( ACCESS_Frame( count * 2L ) )
      goto Fail2;

    for ( n = 0; n < count; n++ )
    {
      c[n] = GET_UShort();

      /* We check whether the specific class is used at all.  If not,
         class 0 is used instead.                                     */

      if ( !d[c[n]] )
        c[n] = 0;
    }

    FORGET_Frame();

    pcr->PosLookupRecord = NULL;

    count = pcr->PosCount;

    if ( ALLOC_ARRAY( pcr->PosLookupRecord, count, TTO_PosLookupRecord ) )
      goto Fail2;

    plr = pcr->PosLookupRecord;

    if ( ACCESS_Frame( count * 4L ) )
      goto Fail1;

    for ( n = 0; n < count; n++ )
    {
      plr[n].SequenceIndex   = GET_UShort();
      plr[n].LookupListIndex = GET_UShort();
    }

    FORGET_Frame();

    return TT_Err_Ok;

  Fail1:
    FREE( plr );

  Fail2:
    FREE( c );
    return error;
  }


  static void  Free_PosClassRule( TTO_PosClassRule*  pcr )
  {
    FREE( pcr->PosLookupRecord );
    FREE( pcr->Class );
  }


  /* PosClassSet */

  static TT_Error  Load_PosClassSet( TTO_ContextPosFormat2*  cpf2,
                                     TTO_PosClassSet*        pcs,
                                     PFace                   input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    UShort             n, count;
    ULong              cur_offset, new_offset, base_offset;

    TTO_PosClassRule*  pcr;


    base_offset = FILE_Pos();

    if ( ACCESS_Frame( 2L ) )
      return error;

    count = pcs->PosClassRuleCount = GET_UShort();

    FORGET_Frame();

    pcs->PosClassRule = NULL;

    if ( ALLOC_ARRAY( pcs->PosClassRule, count, TTO_PosClassRule ) )
      return error;

    pcr = pcs->PosClassRule;

    for ( n = 0; n < count; n++ )
    {
      if ( ACCESS_Frame( 2L ) )
        goto Fail;

      new_offset = GET_UShort() + base_offset;

      FORGET_Frame();

      cur_offset = FILE_Pos();
      if ( FILE_Seek( new_offset ) ||
           ( error = Load_PosClassRule( cpf2, &pcr[n],
                                        input ) ) != TT_Err_Ok )
        goto Fail;
      (void)FILE_Seek( cur_offset );
    }

    return TT_Err_Ok;

  Fail:
    for ( n = 0; n < count; n++ )
      Free_PosClassRule( &pcr[n] );

    FREE( pcr );
    return error;
  }


  static void  Free_PosClassSet( TTO_PosClassSet*  pcs )
  {
    UShort             n, count;

    TTO_PosClassRule*  pcr;


    if ( pcs->PosClassRule )
    {
      count = pcs->PosClassRuleCount;
      pcr   = pcs->PosClassRule;

      for ( n = 0; n < count; n++ )
        Free_PosClassRule( &pcr[n] );

      FREE( pcr );
    }
  }


  /* ContextPosFormat2 */

  static TT_Error  Load_ContextPos2( TTO_ContextPosFormat2*  cpf2,
                                     PFace                   input )
  {
    DEFINE_LOAD_LOCALS( input->stream );

    UShort            n, count;
    ULong             cur_offset, new_offset, base_offset;

    TTO_PosClassSet*  pcs;


    base_offset = FILE_Pos() - 2;

    if ( ACCESS_Frame( 2L ) )
      return error;

    new_offset = GET_UShort() + base_offset;

    FORGET_Frame();

    cur_offset = FILE_Pos();
    if ( FILE_Seek( new_offset ) ||
         ( error = Load_Coverage( &cpf2->Coverage, input ) ) != TT_Err_Ok )
      return error;
    (void)FILE_Seek( cur_offset );

    if ( ACCESS_Frame( 4L ) )
      goto Fail3;