Esempio n. 1
0
  cff_index_access_element( CFF_Index  idx,
                            FT_UInt    element,
                            FT_Byte**  pbytes,
                            FT_ULong*  pbyte_len )
  {
    FT_Error  error = CFF_Err_Ok;


    if ( idx && idx->count > element )
    {
      /* compute start and end offsets */
      FT_Stream  stream = idx->stream;
      FT_ULong   off1, off2 = 0;


      /* load offsets from file or the offset table */
      if ( !idx->offsets )
      {
        FT_ULong  pos = element * idx->off_size;


        if ( FT_STREAM_SEEK( idx->start + 3 + pos ) )
          goto Exit;

        off1 = cff_index_read_offset( idx, &error );
        if ( error )
          goto Exit;

        if ( off1 != 0 )
        {
          do
          {
            element++;
            off2 = cff_index_read_offset( idx, &error );
          }
          while ( off2 == 0 && element < idx->count );
        }
      }
      else   /* use offsets table */
      {
        off1 = idx->offsets[element];
        if ( off1 )
        {
          do
          {
            element++;
            off2 = idx->offsets[element];

          } while ( off2 == 0 && element < idx->count );
        }
      }

      /* XXX: should check off2 does not exceed the end of this entry; */
      /*      at present, only truncate off2 at the end of this stream */
      if ( off2 > stream->size + 1                    ||
           idx->data_offset > stream->size - off2 + 1 )
      {
        FT_ERROR(( "cff_index_access_element:"
                   " offset to next entry (%d)"
                   " exceeds the end of stream (%d)\n",
                   off2, stream->size - idx->data_offset + 1 ));
        off2 = stream->size - idx->data_offset + 1;
      }

      /* access element */
      if ( off1 && off2 > off1 )
      {
        *pbyte_len = off2 - off1;

        if ( idx->bytes )
        {
          /* this index was completely loaded in memory, that's easy */
          *pbytes = idx->bytes + off1 - 1;
        }
        else
        {
          /* this index is still on disk/file, access it through a frame */
          if ( FT_STREAM_SEEK( idx->data_offset + off1 - 1 ) ||
               FT_FRAME_EXTRACT( off2 - off1, *pbytes )      )
            goto Exit;
        }
      }
      else
      {
        /* empty index element */
        *pbytes    = 0;
        *pbyte_len = 0;
      }
    }
    else
      error = CFF_Err_Invalid_Argument;

  Exit:
    return error;
  }
Esempio n. 2
0
  FT_Stream_EnterFrame( FT_Stream  stream,
                        FT_ULong   count )
  {
    FT_Error  error = FT_Err_Ok;
    FT_ULong  read_bytes;


    /* check for nested frame access */
    FT_ASSERT( stream && stream->cursor == 0 );

    if ( stream->read )
    {
      /* allocate the frame in memory */
      FT_Memory  memory = stream->memory;

#ifdef FT_DEBUG_MEMORY
      /* assume _ft_debug_file and _ft_debug_lineno are already set */
      stream->base = (unsigned char*)ft_mem_qalloc( memory, count, &error );
      if ( error )
        goto Exit;
#else
      if ( FT_QALLOC( stream->base, count ) )
        goto Exit;
#endif
      /* read it */
      read_bytes = stream->read( stream, stream->pos,
                                 stream->base, count );
      if ( read_bytes < count )
      {
        FT_ERROR(( "FT_Stream_EnterFrame:" ));
        FT_ERROR(( " invalid read; expected %lu bytes, got %lu\n",
                   count, read_bytes ));

        FT_FREE( stream->base );
        error = FT_Err_Invalid_Stream_Operation;
      }
      stream->cursor = stream->base;
      stream->limit  = stream->cursor + count;
      stream->pos   += read_bytes;
    }
    else
    {
      /* check current and new position */
      if ( stream->pos >= stream->size        ||
           stream->pos + count > stream->size )
      {
        FT_ERROR(( "FT_Stream_EnterFrame:" ));
        FT_ERROR(( " invalid i/o; pos = 0x%lx, count = %lu, size = 0x%lx\n",
                   stream->pos, count, stream->size ));

        error = FT_Err_Invalid_Stream_Operation;
        goto Exit;
      }

      /* set cursor */
      stream->cursor = stream->base + stream->pos;
      stream->limit  = stream->cursor + count;
      stream->pos   += count;
    }

  Exit:
    return error;
  }
Esempio n. 3
0
  /*
   *  This function tries to load a small bitmap within a given FTC_SNode.
   *  Note that it returns a non-zero error code _only_ in the case of
   *  out-of-memory condition.  For all other errors (e.g., corresponding
   *  to a bad font file), this function will mark the sbit as `unavailable'
   *  and return a value of 0.
   *
   *  You should also read the comment within the @ftc_snode_compare
   *  function below to see how out-of-memory is handled during a lookup.
   */
  static FT_Error
  ftc_snode_load( FTC_SNode    snode,
                  FTC_Manager  manager,
                  FT_UInt      gindex,
                  FT_ULong    *asize )
  {
    FT_Error          error;
    FTC_GNode         gnode  = FTC_GNODE( snode );
    FTC_Family        family = gnode->family;
    FT_Memory         memory = manager->memory;
    FT_Face           face;
    FTC_SBit          sbit;
    FTC_SFamilyClass  clazz;


    if ( (FT_UInt)(gindex - gnode->gindex) >= snode->count )
    {
      FT_ERROR(( "ftc_snode_load: invalid glyph index" ));
      return FTC_Err_Invalid_Argument;
    }

    sbit  = snode->sbits + ( gindex - gnode->gindex );
    clazz = (FTC_SFamilyClass)family->clazz;

    sbit->buffer = 0;

    error = clazz->family_load_glyph( family, gindex, manager, &face );
    if ( error )
      goto BadGlyph;

    {
      FT_Int        temp;
      FT_GlyphSlot  slot   = face->glyph;
      FT_Bitmap*    bitmap = &slot->bitmap;
      FT_Int        xadvance, yadvance;


      if ( slot->format != FT_GLYPH_FORMAT_BITMAP )
      {
        FT_ERROR(( "%s: glyph loaded didn't return a bitmap!\n",
                   "ftc_snode_load" ));
        goto BadGlyph;
      }

      /* Check that our values fit into 8-bit containers!       */
      /* If this is not the case, our bitmap is too large       */
      /* and we will leave it as `missing' with sbit.buffer = 0 */

#define CHECK_CHAR( d )  ( temp = (FT_Char)d, temp == d )
#define CHECK_BYTE( d )  ( temp = (FT_Byte)d, temp == d )

      /* horizontal advance in pixels */
      xadvance = ( slot->advance.x + 32 ) >> 6;
      yadvance = ( slot->advance.y + 32 ) >> 6;

      if ( !CHECK_BYTE( bitmap->rows  )     ||
           !CHECK_BYTE( bitmap->width )     ||
           !CHECK_CHAR( bitmap->pitch )     ||
           !CHECK_CHAR( slot->bitmap_left ) ||
           !CHECK_CHAR( slot->bitmap_top  ) ||
           !CHECK_CHAR( xadvance )          ||
           !CHECK_CHAR( yadvance )          )
        goto BadGlyph;

      sbit->width     = (FT_Byte)bitmap->width;
      sbit->height    = (FT_Byte)bitmap->rows;
      sbit->pitch     = (FT_Char)bitmap->pitch;
      sbit->left      = (FT_Char)slot->bitmap_left;
      sbit->top       = (FT_Char)slot->bitmap_top;
      sbit->xadvance  = (FT_Char)xadvance;
      sbit->yadvance  = (FT_Char)yadvance;
      sbit->format    = (FT_Byte)bitmap->pixel_mode;
      sbit->max_grays = (FT_Byte)(bitmap->num_grays - 1);

      /* copy the bitmap into a new buffer -- ignore error */
      error = ftc_sbit_copy_bitmap( sbit, bitmap, memory );

      /* now, compute size */
      if ( asize )
        *asize = FT_ABS( sbit->pitch ) * sbit->height;

    } /* glyph loading successful */

    /* ignore the errors that might have occurred --   */
    /* we mark unloaded glyphs with `sbit.buffer == 0' */
    /* and `width == 255', `height == 0'               */
    /*                                                 */
    if ( error && error != FTC_Err_Out_Of_Memory )
    {
    BadGlyph:
      sbit->width  = 255;
      sbit->height = 0;
      sbit->buffer = NULL;
      error        = 0;
      if ( asize )
        *asize = 0;
    }

    return error;
  }
Esempio n. 4
0
  static void
  t42_parse_encoding( T42_Face    face,
                      T42_Loader  loader )
  {
    T42_Parser  parser = &loader->parser;
    FT_Byte*    cur;
    FT_Byte*    limit  = parser->root.limit;

    PSAux_Service  psaux  = (PSAux_Service)face->psaux;


    T1_Skip_Spaces( parser );
    cur = parser->root.cursor;
    if ( cur >= limit )
    {
      FT_ERROR(( "t42_parse_encoding: out of bounds\n" ));
      parser->root.error = FT_THROW( Invalid_File_Format );
      return;
    }

    /* if we have a number or `[', the encoding is an array, */
    /* and we must load it now                               */
    if ( ft_isdigit( *cur ) || *cur == '[' )
    {
      T1_Encoding  encode          = &face->type1.encoding;
      FT_Int       count, n;
      PS_Table     char_table      = &loader->encoding_table;
      FT_Memory    memory          = parser->root.memory;
      FT_Error     error;
      FT_Bool      only_immediates = 0;


      /* read the number of entries in the encoding; should be 256 */
      if ( *cur == '[' )
      {
        count           = 256;
        only_immediates = 1;
        parser->root.cursor++;
      }
      else
        count = (FT_Int)T1_ToInt( parser );

      T1_Skip_Spaces( parser );
      if ( parser->root.cursor >= limit )
        return;

      /* we use a T1_Table to store our charnames */
      loader->num_chars = encode->num_chars = count;
      if ( FT_NEW_ARRAY( encode->char_index, count )     ||
           FT_NEW_ARRAY( encode->char_name,  count )     ||
           FT_SET_ERROR( psaux->ps_table_funcs->init(
                           char_table, count, memory ) ) )
      {
        parser->root.error = error;
        return;
      }

      /* We need to `zero' out encoding_table.elements */
      for ( n = 0; n < count; n++ )
      {
        char*  notdef = (char *)".notdef";


        (void)T1_Add_Table( char_table, n, notdef, 8 );
      }

      /* Now we need to read records of the form                */
      /*                                                        */
      /*   ... charcode /charname ...                           */
      /*                                                        */
      /* for each entry in our table.                           */
      /*                                                        */
      /* We simply look for a number followed by an immediate   */
      /* name.  Note that this ignores correctly the sequence   */
      /* that is often seen in type42 fonts:                    */
      /*                                                        */
      /*   0 1 255 { 1 index exch /.notdef put } for dup        */
      /*                                                        */
      /* used to clean the encoding array before anything else. */
      /*                                                        */
      /* Alternatively, if the array is directly given as       */
      /*                                                        */
      /*   /Encoding [ ... ]                                    */
      /*                                                        */
      /* we only read immediates.                               */

      n = 0;
      T1_Skip_Spaces( parser );

      while ( parser->root.cursor < limit )
      {
        cur = parser->root.cursor;

        /* we stop when we encounter `def' or `]' */
        if ( *cur == 'd' && cur + 3 < limit )
        {
          if ( cur[1] == 'e'          &&
               cur[2] == 'f'          &&
               t42_is_space( cur[3] ) )
          {
            FT_TRACE6(( "encoding end\n" ));
            cur += 3;
            break;
          }
        }
        if ( *cur == ']' )
        {
          FT_TRACE6(( "encoding end\n" ));
          cur++;
          break;
        }

        /* check whether we have found an entry */
        if ( ft_isdigit( *cur ) || only_immediates )
        {
          FT_Int  charcode;


          if ( only_immediates )
            charcode = n;
          else
          {
            charcode = (FT_Int)T1_ToInt( parser );
            T1_Skip_Spaces( parser );
          }

          cur = parser->root.cursor;

          if ( cur + 2 < limit && *cur == '/' && n < count )
          {
            FT_UInt  len;


            cur++;

            parser->root.cursor = cur;
            T1_Skip_PS_Token( parser );
            if ( parser->root.cursor >= limit )
              return;
            if ( parser->root.error )
              return;

            len = (FT_UInt)( parser->root.cursor - cur );

            parser->root.error = T1_Add_Table( char_table, charcode,
                                               cur, len + 1 );
            if ( parser->root.error )
              return;
            char_table->elements[charcode][len] = '\0';

            n++;
          }
          else if ( only_immediates )
          {
            /* Since the current position is not updated for           */
            /* immediates-only mode we would get an infinite loop if   */
            /* we don't do anything here.                              */
            /*                                                         */
            /* This encoding array is not valid according to the type1 */
            /* specification (it might be an encoding for a CID type1  */
            /* font, however), so we conclude that this font is NOT a  */
            /* type1 font.                                             */
            parser->root.error = FT_THROW( Unknown_File_Format );
            return;
          }
        }
        else
        {
          T1_Skip_PS_Token( parser );
          if ( parser->root.error )
            return;
        }

        T1_Skip_Spaces( parser );
      }

      face->type1.encoding_type = T1_ENCODING_TYPE_ARRAY;
      parser->root.cursor       = cur;
    }

    /* Otherwise, we should have either `StandardEncoding', */
    /* `ExpertEncoding', or `ISOLatin1Encoding'             */
    else
    {
      if ( cur + 17 < limit                                            &&
           ft_strncmp( (const char*)cur, "StandardEncoding", 16 ) == 0 )
        face->type1.encoding_type = T1_ENCODING_TYPE_STANDARD;

      else if ( cur + 15 < limit                                          &&
                ft_strncmp( (const char*)cur, "ExpertEncoding", 14 ) == 0 )
        face->type1.encoding_type = T1_ENCODING_TYPE_EXPERT;

      else if ( cur + 18 < limit                                             &&
                ft_strncmp( (const char*)cur, "ISOLatin1Encoding", 17 ) == 0 )
        face->type1.encoding_type = T1_ENCODING_TYPE_ISOLATIN1;

      else
        parser->root.error = FT_THROW( Ignore );
    }
  }
Esempio n. 5
0
  static void
  t42_parse_charstrings( T42_Face    face,
                         T42_Loader  loader )
  {
    T42_Parser     parser       = &loader->parser;
    PS_Table       code_table   = &loader->charstrings;
    PS_Table       name_table   = &loader->glyph_names;
    PS_Table       swap_table   = &loader->swap_table;
    FT_Memory      memory       = parser->root.memory;
    FT_Error       error;

    PSAux_Service  psaux        = (PSAux_Service)face->psaux;

    FT_Byte*       cur;
    FT_Byte*       limit        = parser->root.limit;
    FT_Int         n;
    FT_Int         notdef_index = 0;
    FT_Byte        notdef_found = 0;


    T1_Skip_Spaces( parser );

    if ( parser->root.cursor >= limit )
    {
      FT_ERROR(( "t42_parse_charstrings: out of bounds\n" ));
      error = FT_THROW( Invalid_File_Format );
      goto Fail;
    }

    if ( ft_isdigit( *parser->root.cursor ) )
    {
      loader->num_glyphs = T1_ToInt( parser );
      if ( parser->root.error )
        return;
      if ( loader->num_glyphs < 0 )
      {
        FT_ERROR(( "t42_parse_encoding: invalid number of glyphs\n" ));
        error = FT_THROW( Invalid_File_Format );
        goto Fail;
      }
    }
    else if ( *parser->root.cursor == '<' )
    {
      /* We have `<< ... >>'.  Count the number of `/' in the dictionary */
      /* to get its size.                                                */
      FT_Int  count = 0;


      T1_Skip_PS_Token( parser );
      if ( parser->root.error )
        return;
      T1_Skip_Spaces( parser );
      cur = parser->root.cursor;

      while ( parser->root.cursor < limit )
      {
        if ( *parser->root.cursor == '/' )
          count++;
        else if ( *parser->root.cursor == '>' )
        {
          loader->num_glyphs  = count;
          parser->root.cursor = cur;        /* rewind */
          break;
        }
        T1_Skip_PS_Token( parser );
        if ( parser->root.error )
          return;
        T1_Skip_Spaces( parser );
      }
    }
    else
    {
      FT_ERROR(( "t42_parse_charstrings: invalid token\n" ));
      error = FT_THROW( Invalid_File_Format );
      goto Fail;
    }

    if ( parser->root.cursor >= limit )
    {
      FT_ERROR(( "t42_parse_charstrings: out of bounds\n" ));
      error = FT_THROW( Invalid_File_Format );
      goto Fail;
    }

    /* initialize tables */

    error = psaux->ps_table_funcs->init( code_table,
                                         loader->num_glyphs,
                                         memory );
    if ( error )
      goto Fail;

    error = psaux->ps_table_funcs->init( name_table,
                                         loader->num_glyphs,
                                         memory );
    if ( error )
      goto Fail;

    /* Initialize table for swapping index notdef_index and */
    /* index 0 names and codes (if necessary).              */

    error = psaux->ps_table_funcs->init( swap_table, 4, memory );
    if ( error )
      goto Fail;

    n = 0;

    for (;;)
    {
      /* The format is simple:                   */
      /*   `/glyphname' + index [+ def]          */

      T1_Skip_Spaces( parser );

      cur = parser->root.cursor;
      if ( cur >= limit )
        break;

      /* We stop when we find an `end' keyword or '>' */
      if ( *cur   == 'e'          &&
           cur + 3 < limit        &&
           cur[1] == 'n'          &&
           cur[2] == 'd'          &&
           t42_is_space( cur[3] ) )
        break;
      if ( *cur == '>' )
        break;

      T1_Skip_PS_Token( parser );
      if ( parser->root.cursor >= limit )
      {
        FT_ERROR(( "t42_parse_charstrings: out of bounds\n" ));
        error = FT_THROW( Invalid_File_Format );
        goto Fail;
      }
      if ( parser->root.error )
        return;

      if ( *cur == '/' )
      {
        FT_UInt  len;


        if ( cur + 2 >= limit )
        {
          FT_ERROR(( "t42_parse_charstrings: out of bounds\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Fail;
        }

        cur++;                              /* skip `/' */
        len = (FT_UInt)( parser->root.cursor - cur );

        error = T1_Add_Table( name_table, n, cur, len + 1 );
        if ( error )
          goto Fail;

        /* add a trailing zero to the name table */
        name_table->elements[n][len] = '\0';

        /* record index of /.notdef */
        if ( *cur == '.'                                              &&
             ft_strcmp( ".notdef",
                        (const char*)(name_table->elements[n]) ) == 0 )
        {
          notdef_index = n;
          notdef_found = 1;
        }

        T1_Skip_Spaces( parser );

        cur = parser->root.cursor;

        (void)T1_ToInt( parser );
        if ( parser->root.cursor >= limit )
        {
          FT_ERROR(( "t42_parse_charstrings: out of bounds\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Fail;
        }

        len = (FT_UInt)( parser->root.cursor - cur );

        error = T1_Add_Table( code_table, n, cur, len + 1 );
        if ( error )
          goto Fail;

        code_table->elements[n][len] = '\0';

        n++;
        if ( n >= loader->num_glyphs )
          break;
      }
    }

    loader->num_glyphs = n;

    if ( !notdef_found )
    {
      FT_ERROR(( "t42_parse_charstrings: no /.notdef glyph\n" ));
      error = FT_THROW( Invalid_File_Format );
      goto Fail;
    }

    /* if /.notdef does not occupy index 0, do our magic. */
    if ( ft_strcmp( (const char*)".notdef",
                    (const char*)name_table->elements[0] ) )
    {
      /* Swap glyph in index 0 with /.notdef glyph.  First, add index 0  */
      /* name and code entries to swap_table.  Then place notdef_index   */
      /* name and code entries into swap_table.  Then swap name and code */
      /* entries at indices notdef_index and 0 using values stored in    */
      /* swap_table.                                                     */

      /* Index 0 name */
      error = T1_Add_Table( swap_table, 0,
                            name_table->elements[0],
                            name_table->lengths [0] );
      if ( error )
        goto Fail;

      /* Index 0 code */
      error = T1_Add_Table( swap_table, 1,
                            code_table->elements[0],
                            code_table->lengths [0] );
      if ( error )
        goto Fail;

      /* Index notdef_index name */
      error = T1_Add_Table( swap_table, 2,
                            name_table->elements[notdef_index],
                            name_table->lengths [notdef_index] );
      if ( error )
        goto Fail;

      /* Index notdef_index code */
      error = T1_Add_Table( swap_table, 3,
                            code_table->elements[notdef_index],
                            code_table->lengths [notdef_index] );
      if ( error )
        goto Fail;

      error = T1_Add_Table( name_table, notdef_index,
                            swap_table->elements[0],
                            swap_table->lengths [0] );
      if ( error )
        goto Fail;

      error = T1_Add_Table( code_table, notdef_index,
                            swap_table->elements[1],
                            swap_table->lengths [1] );
      if ( error )
        goto Fail;

      error = T1_Add_Table( name_table, 0,
                            swap_table->elements[2],
                            swap_table->lengths [2] );
      if ( error )
        goto Fail;

      error = T1_Add_Table( code_table, 0,
                            swap_table->elements[3],
                            swap_table->lengths [3] );
      if ( error )
        goto Fail;

    }

    return;

  Fail:
    parser->root.error = error;
  }
Esempio n. 6
0
  static FT_Error
  cid_load_keyword( CID_Face        face,
                    CID_Loader*     loader,
                    const T1_Field  keyword )
  {
    FT_Error      error;
    CID_Parser*   parser = &loader->parser;
    FT_Byte*      object;
    void*         dummy_object;
    CID_FaceInfo  cid = &face->cid;


    /* if the keyword has a dedicated callback, call it */
    if ( keyword->type == T1_FIELD_TYPE_CALLBACK )
    {
      keyword->reader( (FT_Face)face, parser );
      error = parser->root.error;
      goto Exit;
    }

    /* we must now compute the address of our target object */
    switch ( keyword->location )
    {
    case T1_FIELD_LOCATION_CID_INFO:
      object = (FT_Byte*)cid;
      break;

    case T1_FIELD_LOCATION_FONT_INFO:
      object = (FT_Byte*)&cid->font_info;
      break;

    case T1_FIELD_LOCATION_FONT_EXTRA:
      object = (FT_Byte*)&face->font_extra;
      break;

    case T1_FIELD_LOCATION_BBOX:
      object = (FT_Byte*)&cid->font_bbox;
      break;

    default:
      {
        CID_FaceDict  dict;


        if ( parser->num_dict < 0 || parser->num_dict >= cid->num_dicts )
        {
          FT_ERROR(( "cid_load_keyword: invalid use of `%s'\n",
                     keyword->ident ));
          error = FT_THROW( Syntax_Error );
          goto Exit;
        }

        dict = cid->font_dicts + parser->num_dict;
        switch ( keyword->location )
        {
        case T1_FIELD_LOCATION_PRIVATE:
          object = (FT_Byte*)&dict->private_dict;
          break;

        default:
          object = (FT_Byte*)dict;
        }
      }
    }

    dummy_object = object;

    /* now, load the keyword data in the object's field(s) */
    if ( keyword->type == T1_FIELD_TYPE_INTEGER_ARRAY ||
         keyword->type == T1_FIELD_TYPE_FIXED_ARRAY   )
      error = cid_parser_load_field_table( &loader->parser, keyword,
                                           &dummy_object );
    else
      error = cid_parser_load_field( &loader->parser,
                                     keyword, &dummy_object );
  Exit:
    return error;
  }
Esempio n. 7
0
  FT_Stream_Open( FT_Stream    stream,
                  const char*  filepathname )
  {
    int          file;
    struct stat  stat_buf;


    if ( !stream )
      return FT_Err_Invalid_Stream_Handle;

    /* open the file */
    file = open( filepathname, O_RDONLY );
    if ( file < 0 )
    {
      FT_ERROR(( "FT_Stream_Open:" ));
      FT_ERROR(( " could not open `%s'\n", filepathname ));
      return FT_Err_Cannot_Open_Resource;
    }

    /* Here we ensure that a "fork" will _not_ duplicate   */
    /* our opened input streams on Unix.  This is critical */
    /* since it avoids some (possible) access control      */
    /* issues and cleans up the kernel file table a bit.   */
    /*                                                     */
#ifdef F_SETFD
#ifdef FD_CLOEXEC
    (void)fcntl( file, F_SETFD, FD_CLOEXEC );
#else
    (void)fcntl( file, F_SETFD, 1 );
#endif /* FD_CLOEXEC */
#endif /* F_SETFD */

    if ( fstat( file, &stat_buf ) < 0 )
    {
      FT_ERROR(( "FT_Stream_Open:" ));
      FT_ERROR(( " could not `fstat' file `%s'\n", filepathname ));
      goto Fail_Map;
    }

    /* XXX: TODO -- real 64bit platform support                        */
    /*                                                                 */
    /* `stream->size' is typedef'd to unsigned long (in                */
    /* freetype/ftsystem.h); `stat_buf.st_size', however, is usually   */
    /* typedef'd to off_t (in sys/stat.h).                             */
    /* On some platforms, the former is 32bit and the latter is 64bit. */
    /* To avoid overflow caused by fonts in huge files larger than     */
    /* 2GB, do a test.  Temporary fix proposed by Sean McBride.        */
    /*                                                                 */
    if ( stat_buf.st_size > LONG_MAX )
    {
      FT_ERROR(( "FT_Stream_Open: file is too big" ));
      goto Fail_Map;
    }
    else if ( stat_buf.st_size == 0 )
    {
      FT_ERROR(( "FT_Stream_Open: zero-length file" ));
      goto Fail_Map;
    }

    /* This cast potentially truncates a 64bit to 32bit! */
    stream->size = (unsigned long)stat_buf.st_size;
    stream->pos  = 0;
    stream->base = (unsigned char *)mmap( NULL,
                                          stream->size,
                                          PROT_READ,
                                          MAP_FILE | MAP_PRIVATE,
                                          file,
                                          0 );

    /* on some RTOS, mmap might return 0 */
    if ( (long)stream->base != -1 && stream->base != NULL )
      stream->close = ft_close_stream_by_munmap;
    else
    {
      ssize_t  total_read_count;


      FT_ERROR(( "FT_Stream_Open:" ));
      FT_ERROR(( " could not `mmap' file `%s'\n", filepathname ));

      stream->base = (unsigned char*)ft_alloc( NULL, stream->size );

      if ( !stream->base )
      {
        FT_ERROR(( "FT_Stream_Open:" ));
        FT_ERROR(( " could not `alloc' memory\n" ));
        goto Fail_Map;
      }

      total_read_count = 0;
      do {
        ssize_t  read_count;


        read_count = read( file,
                           stream->base + total_read_count,
                           stream->size - total_read_count );

        if ( read_count <= 0 )
        {
          if ( read_count == -1 && errno == EINTR )
            continue;

          FT_ERROR(( "FT_Stream_Open:" ));
          FT_ERROR(( " error while `read'ing file `%s'\n", filepathname ));
          goto Fail_Read;
        }

        total_read_count += read_count;

      } while ( (unsigned long)total_read_count != stream->size );

      stream->close = ft_close_stream_by_free;
    }

    close( file );

    stream->descriptor.pointer = stream->base;
    stream->pathname.pointer   = (char*)filepathname;

    stream->read = 0;

    FT_TRACE1(( "FT_Stream_Open:" ));
    FT_TRACE1(( " opened `%s' (%d bytes) successfully\n",
                filepathname, stream->size ));

    return FT_Err_Ok;

  Fail_Read:
    ft_free( NULL, stream->base );

  Fail_Map:
    close( file );

    stream->base = NULL;
    stream->size = 0;
    stream->pos  = 0;

    return FT_Err_Cannot_Open_Stream;
  }
Esempio n. 8
0
int vrpn_Tracker_Isotrak::get_report(void)
{
    char errmsg[512];	// Error message to send to VRPN
    int ret;		// Return value from function call to be checked
    
    // The first byte of a binary record has the high order bit set
    
    if (status == vrpn_TRACKER_SYNCING) {
        // Try to get a character.  If none, just return.
        if (vrpn_read_available_characters(serial_fd, buffer, 1) != 1) {
            return 0;
        }

        // The first byte of a record has the high order bit set
        if(!(buffer[0] & 0x80)) {
            sprintf(errmsg,"While syncing (looking for byte with high order bit set, "
                    "got '%x')", buffer[0]);
            FT_WARNING(errmsg);
            vrpn_flush_input_buffer(serial_fd);
    
            return 0;
        }
    
        // Got the first byte of a report -- go into TRACKER_PARTIAL mode
        // and record that we got one character at this time. 
        bufcount = 1;
        vrpn_gettimeofday(&timestamp, NULL);
        status = vrpn_TRACKER_PARTIAL;
    }
    
    //--------------------------------------------------------------------
    // Read as many bytes of this report as we can, storing them
    // in the buffer.  We keep track of how many have been read so far
    // and only try to read the rest.  The routine that calls this one
    // makes sure we get a full reading often enough (ie, it is responsible
    // for doing the watchdog timing to make sure the tracker hasn't simply
    // stopped sending characters).
    //--------------------------------------------------------------------
    
    ret = vrpn_read_available_characters(serial_fd, &buffer[bufcount],
                    BINARY_RECORD_SIZE - bufcount);
    if (ret == -1) {
            FT_ERROR("Error reading report");
            status = vrpn_TRACKER_FAIL;
            return 0;
    }
    
    bufcount += ret;
    
    if (bufcount < BINARY_RECORD_SIZE) {	// Not done -- go back for more
            return 0;
    }
    
    // We now have enough characters for a full report
    // Check it to ensure we do not have a high bit set other
    // than on the first byte
    for(int i=1;  i<BINARY_RECORD_SIZE;  i++)
    {
        if (buffer[i] & 0x80) {
            status = vrpn_TRACKER_SYNCING;
        
            sprintf(errmsg,"Unexpected sync character in record");
            FT_WARNING(errmsg);

            //FT_WARNING("Not '0' in record, re-syncing");
            vrpn_flush_input_buffer(serial_fd);
            return 0;
        }
    }
    
    // Create a buffer for the decoded message
    unsigned char decoded[BINARY_RECORD_SIZE];
    int d = 0;

    int fullgroups = BINARY_RECORD_SIZE / 8;

    // The following decodes the Isotrak binary format. It consists of
    // 7 byte values plus an extra byte of the high bit for these 
    // 7 bytes. First, loop over the 7 byte ranges (8 bytes in binary)
    int i;
    for(i = 0;  i<fullgroups;  i++)
    {
        vrpn_uint8 *group = &buffer[i * 8];
        vrpn_uint8 high = buffer[i * 8 + 7];

        for(int j=0;  j<7;  j++)
        {
            decoded[d] = *group++;
            if(high & 1) 
                decoded[d] |= 0x80;

            d++;
            high >>= 1;
        }
    }

    // We'll have X bytes left at the end
    int left = BINARY_RECORD_SIZE - fullgroups * 8;
    vrpn_uint8 *group = &buffer[fullgroups * 8];
    vrpn_uint8 high = buffer[fullgroups * 8 + left - 1];

    for(int j=0;  j<left-1;  j++)
    {
        decoded[d] = *group++;
        if(high & 1) 
            decoded[d] |= 0x80;

        d++;
        high >>= 1;
    }

    // ASCII value of 1 == 49 subtracing 49 gives the sensor number
    d_sensor = decoded[1] - 49;	// Convert ASCII 1 to sensor 0 and so on.
    if ( (d_sensor < 0) || (d_sensor >= num_stations) ) {
        status = vrpn_TRACKER_SYNCING;
        sprintf(errmsg,"Bad sensor # (%d) in record, re-syncing", d_sensor);
        FT_WARNING(errmsg);
        vrpn_flush_input_buffer(serial_fd);
        return 0;
    }



    // Extract the important information
    vrpn_uint8 *item = &decoded[3];

    // This is a scale factor from the Isotrak manual
    // This will convert the values to meters, the standard vrpn format
    double mul = 1.6632 / 32767.; 
    float div = 1.f / 32767.f;  // Fractional amount for angles

    pos[0] = ( (vrpn_int8(item[1]) << 8) + item[0]) * mul;   item += 2;
    pos[1] = ( (vrpn_int8(item[1]) << 8) + item[0]) * mul;   item += 2;
    pos[2] = ( (vrpn_int8(item[1]) << 8) + item[0]) * mul;   item += 2;
    d_quat[3] = ( (vrpn_int8(item[1]) << 8) + item[0]) * div;   item += 2;
    d_quat[0] = ( (vrpn_int8(item[1]) << 8) + item[0]) * div;   item += 2;
    d_quat[1] = ( (vrpn_int8(item[1]) << 8) + item[0]) * div;   item += 2;
    d_quat[2] = ( (vrpn_int8(item[1]) << 8) + item[0]) * div;

    //--------------------------------------------------------------------
    // If this sensor has button on it, decode the button values
    // into the button device and mainloop the button device so that
    // it will report any changes.
    //--------------------------------------------------------------------

    if(stylus_buttons[d_sensor] != NULL)
    {
        char button = decoded[2];
        if(button == '@' || button == '*')
        {
            stylus_buttons[d_sensor]->set_button(0, button == '@');

        }

	    stylus_buttons[d_sensor]->mainloop();
    }
    
    //--------------------------------------------------------------------
    // Done with the decoding, 
    // set the report to ready
    //--------------------------------------------------------------------
    status = vrpn_TRACKER_SYNCING;
    bufcount = 0;
    
    #ifdef VERBOSE2
        print_latest_report();
    #endif
    
    return 1;
}
Esempio n. 9
0
void vrpn_Tracker_Isotrak::reset()
{
    static int numResets = 0;	// How many resets have we tried?
    int i,resetLen,ret;
    unsigned char reset[10];
    char errmsg[512];
    
    //--------------------------------------------------------------------
    // This section deals with resetting the tracker to its default state.
    // Multiple attempts are made to reset, getting more aggressive each
    // time. This section completes when the tracker reports a valid status
    // message after the reset has completed.
    //--------------------------------------------------------------------
    
    // Send the tracker a string that should reset it.  The first time we
    // try this, just do the normal 'c' command to put it into polled mode.
    // After a few tries with this, use a [return] character, and then use the ^Y to reset. 
    
    resetLen = 0;
    numResets++;		  	
    
    // We're trying another reset
    if (numResets > 1) {	        // Try to get it out of a query loop if its in one
            reset[resetLen++] = (unsigned char) (13); // Return key -> get ready
    }
    
    if (numResets > 2) {
        reset[resetLen++] = (unsigned char) (25); // Ctrl + Y -> reset the tracker
    }
    
    reset[resetLen++] = 'c'; // Put it into polled (not continuous) mode
    
    
    sprintf(errmsg, "Resetting the tracker (attempt %d)", numResets);
    FT_WARNING(errmsg);
    
    for (i = 0; i < resetLen; i++) {
            if (vrpn_write_characters(serial_fd, &reset[i], 1) == 1) {
                    fprintf(stderr,".");
                    vrpn_SleepMsecs(1000.0*2);  // Wait after each character to give it time to respond
            } else {
                    perror("Isotrack: Failed writing to tracker");
                    status = vrpn_TRACKER_FAIL;
                    return;
            }
    }
    //XXX Take out the sleep and make it keep spinning quickly
    if (numResets > 2) {
        vrpn_SleepMsecs(1000.0*20);	// Sleep to let the reset happen, if we're doing ^Y
    }
    
    fprintf(stderr,"\n");
    
    // Get rid of the characters left over from before the reset
    vrpn_flush_input_buffer(serial_fd);
    
    // Make sure that the tracker has stopped sending characters
    vrpn_SleepMsecs(1000.0*2);
    unsigned char scrap[80];
    if ( (ret = vrpn_read_available_characters(serial_fd, scrap, 80)) != 0) {
        sprintf(errmsg,"Got >=%d characters after reset",ret);
        FT_WARNING(errmsg);
        for (i = 0; i < ret; i++) {
            if (isprint(scrap[i])) {
                    fprintf(stderr,"%c",scrap[i]);
            } else {
                    fprintf(stderr,"[0x%02X]",scrap[i]);
            }
        }
        fprintf(stderr, "\n");
        vrpn_flush_input_buffer(serial_fd);		// Flush what's left
    }
    
    // Asking for tracker status
    if (vrpn_write_characters(serial_fd, (const unsigned char *) "S", 1) == 1) {
        vrpn_SleepMsecs(1000.0*1); // Sleep for a second to let it respond
    } else {
            perror("  Isotrack write failed");
            status = vrpn_TRACKER_FAIL;
            return;
    }
    
    // Read Status
    unsigned char statusmsg[22];
    
    // Attempt to read 21 characters.  
    ret = vrpn_read_available_characters(serial_fd, statusmsg, 21);
    
    if ( (ret != 21) ) {
            fprintf(stderr,
            "  Got %d of 21 characters for status\n",ret);
        FT_ERROR("Bad status report from Isotrack, retrying reset");
        return;
    }
    else if ( (statusmsg[0]!='2') ) {
        int i;
        statusmsg[sizeof(statusmsg) - 1] = '\0';	// Null-terminate the string
        fprintf(stderr, "  Isotrack: bad status (");
        for (i = 0; i < ret; i++) {
            if (isprint(statusmsg[i])) {
                    fprintf(stderr,"%c",statusmsg[i]);
            } else {
                    fprintf(stderr,"[0x%02X]",statusmsg[i]);
            }
        }
        fprintf(stderr,")\n");
        FT_ERROR("Bad status report from Isotrack, retrying reset");
        return;
    } else {
        FT_WARNING("Isotrack gives correct status (this is good)");
        numResets = 0; 	// Success, use simple reset next time
    }
    
    //--------------------------------------------------------------------
    // Now that the tracker has given a valid status report, set all of
    // the parameters the way we want them. We rely on power-up setting
    // based on the receiver select switches to turn on the receivers that
    // the user wants.
    //--------------------------------------------------------------------
    
    // Set output format. This is done once for the Isotrak, not per channel.
    if (set_sensor_output_format(0)) {
        return;
    }
    
    // Enable filtering if the constructor parameter said to.
    // Set filtering for both position (x command) and orientation (v command)
    // to the values that are recommended as a "jumping off point" in the
    // Isotrack manual.

    if (do_filter) {
        if (vrpn_write_characters(serial_fd, (const unsigned char *)"x0.2,0.2,0.8,0.8\015", 17) == 17) {
            vrpn_SleepMsecs(1000.0*1); // Sleep for a second to let it respond
        } else {
            perror("  Isotrack write position filter failed");
            status = vrpn_TRACKER_FAIL;
            return;
        }
        if (vrpn_write_characters(serial_fd, (const unsigned char *)"v0.2,0.2,0.8,0.8\015", 17) == 17) {
            vrpn_SleepMsecs(1000.0*1); // Sleep for a second to let it respond
        } else {
            perror("  Isotrack write orientation filter failed");
            status = vrpn_TRACKER_FAIL;
            return;
        }
    }
    
    // RESET Alignment reference frame
    if (vrpn_write_characters(serial_fd, (const unsigned char *) "R1\r", 3) != 3) {
            perror("  Isotrack write failed");
            status = vrpn_TRACKER_FAIL;
            return;
    } else {
            FT_WARNING("Isotrack reset ALIGNMENT reference frame (this is good)");
    }
    
    // reset BORESIGHT
    if (vrpn_write_characters(serial_fd, (const unsigned char *) "b1\r", 3) != 3) {
            perror("  Isotrack write failed");
            status = vrpn_TRACKER_FAIL;
            return;
    } else {
            FT_WARNING("Isotrack reset BORESIGHT (this is good)");
    }
    
    // Set data format to METRIC mode
    if (vrpn_write_characters(serial_fd, (const unsigned char *) "u", 1) != 1) {
            perror("  Isotrack write failed");
            status = vrpn_TRACKER_FAIL;
            return;
    } else {
            FT_WARNING("Isotrack set to metric units (this is good)");
    }



    // Send the additional reset commands, if any, to the tracker.
    // These commands come in lines, with character \015 ending each
    // line. If a line start with an asterisk (*), treat it as a pause
    // command, with the number of seconds to wait coming right after
    // the asterisk. Otherwise, the line is sent directly to the tracker.
    // Wait a while for them to take effect, then clear the input
    // buffer.
    if (strlen(add_reset_cmd) > 0) {
        char	*next_line;
        char	add_cmd_copy[sizeof(add_reset_cmd)];
        char	string_to_send[sizeof(add_reset_cmd)];
        int	seconds_to_wait;

        printf("  Isotrack writing extended reset commands...\n");

        // Make a copy of the additional reset string, since it is consumed
        strncpy(add_cmd_copy, add_reset_cmd, sizeof(add_cmd_copy));

        // Pass through the string, testing each line to see if it is
        // a sleep command or a line to send to the tracker. Continue until
        // there are no more line delimiters ('\015'). Be sure to write the
        // \015 to the end of the string sent to the tracker.
        // Note that strok() puts a NULL character in place of the delimiter.

        next_line = strtok(add_cmd_copy, "\015");
        while (next_line != NULL) {
                if (next_line[0] == '*') {	// This is a "sleep" line, see how long
                        seconds_to_wait = atoi(&next_line[1]);
                        fprintf(stderr,"   ...sleeping %d seconds\n",seconds_to_wait);
                        vrpn_SleepMsecs(1000.0*seconds_to_wait);
                } else {	// This is a command line, send it
                        sprintf(string_to_send, "%s\015", next_line);
                        fprintf(stderr, "   ...sending command: %s\n", string_to_send);
                        vrpn_write_characters(serial_fd,
                                (const unsigned char *)string_to_send,strlen(string_to_send));
                }
                next_line = strtok(next_line+strlen(next_line)+1, "\015");
        }

        // Sleep a little while to let this finish, then clear the input buffer
        vrpn_SleepMsecs(1000.0*2);
        vrpn_flush_input_buffer(serial_fd);
    }

    // Set data format to BINARY mode
    // F = ASCII, f = binary
    if (vrpn_write_characters(serial_fd, (const unsigned char *) "f", 1) != 1) {
            perror("  Isotrack write failed");
            status = vrpn_TRACKER_FAIL;
            return;
    } else {
            FT_WARNING("Isotrack set to BINARY mode (this is good)");
    }
    
    
    // Set tracker to continuous mode
    if (vrpn_write_characters(serial_fd, (const unsigned char *) "C", 1) != 1) {
            perror("  Isotrack write failed");
            status = vrpn_TRACKER_FAIL;
            return;
    } else {
            FT_WARNING("Isotrack set to continuous mode (this is good)");
    }

    FT_WARNING("Reset Completed.");

    status = vrpn_TRACKER_SYNCING;	// We're trying for a new reading

    // Ok, device is ready, we want to calibrate to sensor 1 current position/orientation
    while(get_report() != 1);

    // Done with reset.
    vrpn_gettimeofday(&timestamp, NULL);	// Set watchdog now
    
    status = vrpn_TRACKER_SYNCING;	// We're trying for a new reading
}
Esempio n. 10
0
  cid_parser_new( CID_Parser*    parser,
                  FT_Stream      stream,
                  FT_Memory      memory,
                  PSAux_Service  psaux )
  {
    FT_Error  error;
    FT_ULong  base_offset, offset, ps_len;
    FT_Byte   *cur, *limit;
    FT_Byte   *arg1, *arg2;


    FT_ZERO( parser );
    psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory );

    parser->stream = stream;

    base_offset = FT_STREAM_POS();

    /* first of all, check the font format in the header */
    if ( FT_FRAME_ENTER( 31 ) )
      goto Exit;

    if ( ft_strncmp( (char *)stream->cursor,
                     "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) )
    {
      FT_TRACE2(( "  not a CID-keyed font\n" ));
      error = FT_THROW( Unknown_File_Format );
    }

    FT_FRAME_EXIT();
    if ( error )
      goto Exit;

  Again:
    /* now, read the rest of the file until we find */
    /* `StartData' or `/sfnts'                      */
    {
      /*
       * The algorithm is as follows (omitting the case with less than 256
       * bytes to fill for simplicity).
       *
       * 1. Fill the buffer with 256 + STARTDATA_LEN bytes.
       *
       * 2. Search for the STARTDATA and SFNTS strings at positions
       *    buffer[0], buffer[1], ...,
       *    buffer[255 + STARTDATA_LEN - SFNTS_LEN].
       *
       * 3. Move the last STARTDATA_LEN bytes to buffer[0].
       *
       * 4. Fill the buffer with 256 bytes, starting at STARTDATA_LEN.
       *
       * 5. Repeat with step 2.
       *
       */
      FT_Byte  buffer[256 + STARTDATA_LEN + 1];

      /* values for the first loop */
      FT_ULong  read_len    = 256 + STARTDATA_LEN;
      FT_ULong  read_offset = 0;
      FT_Byte*  p           = buffer;


      for ( offset = FT_STREAM_POS(); ; offset += 256 )
      {
        FT_ULong  stream_len;


        stream_len = stream->size - FT_STREAM_POS();

        read_len = FT_MIN( read_len, stream_len );
        if ( FT_STREAM_READ( p, read_len ) )
          goto Exit;

        /* ensure that we do not compare with data beyond the buffer */
        p[read_len] = '\0';

        limit = p + read_len - SFNTS_LEN;

        for ( p = buffer; p < limit; p++ )
        {
          if ( p[0] == 'S'                                           &&
               ft_strncmp( (char*)p, STARTDATA, STARTDATA_LEN ) == 0 )
          {
            /* save offset of binary data after `StartData' */
            offset += (FT_ULong)( p - buffer ) + STARTDATA_LEN + 1;
            goto Found;
          }
          else if ( p[1] == 's'                                   &&
                    ft_strncmp( (char*)p, SFNTS, SFNTS_LEN ) == 0 )
          {
            offset += (FT_ULong)( p - buffer ) + SFNTS_LEN + 1;
            goto Found;
          }
        }

        if ( read_offset + read_len < STARTDATA_LEN )
        {
          FT_TRACE2(( "cid_parser_new: no `StartData' keyword found\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Exit;
        }

        FT_MEM_MOVE( buffer,
                     buffer + read_offset + read_len - STARTDATA_LEN,
                     STARTDATA_LEN );

        /* values for the next loop */
        read_len    = 256;
        read_offset = STARTDATA_LEN;
        p           = buffer + read_offset;
      }
    }

  Found:
    /* We have found the start of the binary data or the `/sfnts' token. */
    /* Now rewind and extract the frame corresponding to this PostScript */
    /* section.                                                          */

    ps_len = offset - base_offset;
    if ( FT_STREAM_SEEK( base_offset )                  ||
         FT_FRAME_EXTRACT( ps_len, parser->postscript ) )
      goto Exit;

    parser->data_offset    = offset;
    parser->postscript_len = ps_len;
    parser->root.base      = parser->postscript;
    parser->root.cursor    = parser->postscript;
    parser->root.limit     = parser->root.cursor + ps_len;
    parser->num_dict       = -1;

    /* Finally, we check whether `StartData' or `/sfnts' was real --  */
    /* it could be in a comment or string.  We also get the arguments */
    /* of `StartData' to find out whether the data is represented in  */
    /* binary or hex format.                                          */

    arg1 = parser->root.cursor;
    cid_parser_skip_PS_token( parser );
    cid_parser_skip_spaces  ( parser );
    arg2 = parser->root.cursor;
    cid_parser_skip_PS_token( parser );
    cid_parser_skip_spaces  ( parser );

    limit = parser->root.limit;
    cur   = parser->root.cursor;

    while ( cur <= limit - SFNTS_LEN )
    {
      if ( parser->root.error )
      {
        error = parser->root.error;
        goto Exit;
      }

      if ( cur[0] == 'S'                                           &&
           cur <= limit - STARTDATA_LEN                            &&
           ft_strncmp( (char*)cur, STARTDATA, STARTDATA_LEN ) == 0 )
      {
        if ( ft_strncmp( (char*)arg1, "(Hex)", 5 ) == 0 )
        {
          FT_Long  tmp = ft_strtol( (const char *)arg2, NULL, 10 );


          if ( tmp < 0 )
          {
            FT_ERROR(( "cid_parser_new: invalid length of hex data\n" ));
            error = FT_THROW( Invalid_File_Format );
          }
          else
            parser->binary_length = (FT_ULong)tmp;
        }

        goto Exit;
      }
      else if ( cur[1] == 's'                                   &&
                ft_strncmp( (char*)cur, SFNTS, SFNTS_LEN ) == 0 )
      {
        FT_TRACE2(( "cid_parser_new: cannot handle Type 11 fonts\n" ));
        error = FT_THROW( Unknown_File_Format );
        goto Exit;
      }

      cid_parser_skip_PS_token( parser );
      cid_parser_skip_spaces  ( parser );
      arg1 = arg2;
      arg2 = cur;
      cur  = parser->root.cursor;
    }

    /* we haven't found the correct `StartData'; go back and continue */
    /* searching                                                      */
    FT_FRAME_RELEASE( parser->postscript );
    if ( !FT_STREAM_SEEK( offset ) )
      goto Again;

  Exit:
    return error;
  }
Esempio n. 11
0
  cff_face_init( FT_Stream      stream,
                 FT_Face        cffface,        /* CFF_Face */
                 FT_Int         face_index,
                 FT_Int         num_params,
                 FT_Parameter*  params )
  {
    CFF_Face            face        = (CFF_Face)cffface;
    FT_Error            error;
    SFNT_Service        sfnt;
    FT_Service_PsCMaps  psnames;
    PSHinter_Service    pshinter;
    FT_Bool             pure_cff    = 1;
    FT_Bool             sfnt_format = 0;
    FT_Library          library     = cffface->driver->root.library;


    sfnt = (SFNT_Service)FT_Get_Module_Interface(
             library, "sfnt" );
    if ( !sfnt )
    {
      FT_ERROR(( "cff_face_init: cannot access `sfnt' module\n" ));
      error = FT_THROW( Missing_Module );
      goto Exit;
    }

    FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );

    pshinter = (PSHinter_Service)FT_Get_Module_Interface(
                 library, "pshinter" );

    FT_TRACE2(( "CFF driver\n" ));

    /* create input stream from resource */
    if ( FT_STREAM_SEEK( 0 ) )
      goto Exit;

    /* check whether we have a valid OpenType file */
    error = sfnt->init_face( stream, face, face_index, num_params, params );
    if ( !error )
    {
      if ( face->format_tag != TTAG_OTTO )  /* `OTTO'; OpenType/CFF font */
      {
        FT_TRACE2(( "  not an OpenType/CFF font\n" ));
        error = FT_THROW( Unknown_File_Format );
        goto Exit;
      }

      /* if we are performing a simple font format check, exit immediately */
      if ( face_index < 0 )
        return FT_Err_Ok;

      sfnt_format = 1;

      /* now, the font can be either an OpenType/CFF font, or an SVG CEF */
      /* font; in the latter case it doesn't have a `head' table         */
      error = face->goto_table( face, TTAG_head, stream, 0 );
      if ( !error )
      {
        pure_cff = 0;

        /* load font directory */
        error = sfnt->load_face( stream, face, face_index,
                                 num_params, params );
        if ( error )
          goto Exit;
      }
      else
      {
        /* load the `cmap' table explicitly */
        error = sfnt->load_cmap( face, stream );
        if ( error )
          goto Exit;
      }

      /* now load the CFF part of the file */
      error = face->goto_table( face, TTAG_CFF, stream, 0 );
      if ( error )
        goto Exit;
    }
    else
    {
      /* rewind to start of file; we are going to load a pure-CFF font */
      if ( FT_STREAM_SEEK( 0 ) )
        goto Exit;
      error = FT_Err_Ok;
    }

    /* now load and parse the CFF table in the file */
    {
      CFF_Font         cff = NULL;
      CFF_FontRecDict  dict;
      FT_Memory        memory = cffface->memory;
      FT_Int32         flags;
      FT_UInt          i;


      if ( FT_NEW( cff ) )
        goto Exit;

      face->extra.data = cff;
      error = cff_font_load( library, stream, face_index, cff, pure_cff );
      if ( error )
        goto Exit;

      cff->pshinter = pshinter;
      cff->psnames  = psnames;

      cffface->face_index = face_index;

      /* Complement the root flags with some interesting information. */
      /* Note that this is only necessary for pure CFF and CEF fonts; */
      /* SFNT based fonts use the `name' table instead.               */

      cffface->num_glyphs = cff->num_glyphs;

      dict = &cff->top_font.font_dict;

      /* we need the `PSNames' module for CFF and CEF formats */
      /* which aren't CID-keyed                               */
      if ( dict->cid_registry == 0xFFFFU && !psnames )
      {
        FT_ERROR(( "cff_face_init:"
                   " cannot open CFF & CEF fonts\n"
                   "              "
                   " without the `PSNames' module\n" ));
        error = FT_THROW( Missing_Module );
        goto Exit;
      }

#ifdef FT_DEBUG_LEVEL_TRACE
      {
        FT_UInt     idx;
        FT_String*  s;


        FT_TRACE4(( "SIDs\n" ));

        /* dump string index, including default strings for convenience */
        for ( idx = 0; idx < cff->num_strings + 390; idx++ )
        {
          s = cff_index_get_sid_string( cff, idx );
          if ( s )
            FT_TRACE4(("  %5d %s\n", idx, s ));
        }
      }
#endif /* FT_DEBUG_LEVEL_TRACE */

      if ( !dict->has_font_matrix )
        dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM;

      /* Normalize the font matrix so that `matrix->xx' is 1; the */
      /* scaling is done with `units_per_em' then (at this point, */
      /* it already contains the scaling factor, but without      */
      /* normalization of the matrix).                            */
      /*                                                          */
      /* Note that the offsets must be expressed in integer font  */
      /* units.                                                   */

      {
        FT_Matrix*  matrix = &dict->font_matrix;
        FT_Vector*  offset = &dict->font_offset;
        FT_ULong*   upm    = &dict->units_per_em;
        FT_Fixed    temp   = FT_ABS( matrix->yy );


        if ( temp != 0x10000L )
        {
          *upm = FT_DivFix( *upm, temp );

          matrix->xx = FT_DivFix( matrix->xx, temp );
          matrix->yx = FT_DivFix( matrix->yx, temp );
          matrix->xy = FT_DivFix( matrix->xy, temp );
          matrix->yy = FT_DivFix( matrix->yy, temp );
          offset->x  = FT_DivFix( offset->x,  temp );
          offset->y  = FT_DivFix( offset->y,  temp );
        }

        offset->x >>= 16;
        offset->y >>= 16;
      }

      for ( i = cff->num_subfonts; i > 0; i-- )
      {
        CFF_FontRecDict  sub = &cff->subfonts[i - 1]->font_dict;
        CFF_FontRecDict  top = &cff->top_font.font_dict;

        FT_Matrix*  matrix;
        FT_Vector*  offset;
        FT_ULong*   upm;
        FT_Fixed    temp;


        if ( sub->has_font_matrix )
        {
          FT_Long  scaling;


          /* if we have a top-level matrix, */
          /* concatenate the subfont matrix */

          if ( top->has_font_matrix )
          {
            if ( top->units_per_em > 1 && sub->units_per_em > 1 )
              scaling = FT_MIN( top->units_per_em, sub->units_per_em );
            else
              scaling = 1;

            FT_Matrix_Multiply_Scaled( &top->font_matrix,
                                       &sub->font_matrix,
                                       scaling );
            FT_Vector_Transform_Scaled( &sub->font_offset,
                                        &top->font_matrix,
                                        scaling );

            sub->units_per_em = FT_MulDiv( sub->units_per_em,
                                           top->units_per_em,
                                           scaling );
          }
        }
        else
        {
          sub->font_matrix = top->font_matrix;
          sub->font_offset = top->font_offset;

          sub->units_per_em = top->units_per_em;
        }

        matrix = &sub->font_matrix;
        offset = &sub->font_offset;
        upm    = &sub->units_per_em;
        temp   = FT_ABS( matrix->yy );

        if ( temp != 0x10000L )
        {
          *upm = FT_DivFix( *upm, temp );

          matrix->xx = FT_DivFix( matrix->xx, temp );
          matrix->yx = FT_DivFix( matrix->yx, temp );
          matrix->xy = FT_DivFix( matrix->xy, temp );
          matrix->yy = FT_DivFix( matrix->yy, temp );
          offset->x  = FT_DivFix( offset->x,  temp );
          offset->y  = FT_DivFix( offset->y,  temp );
        }

        offset->x >>= 16;
        offset->y >>= 16;
      }

      if ( pure_cff )
      {
        char*  style_name = NULL;


        /* set up num_faces */
        cffface->num_faces = cff->num_faces;

        /* compute number of glyphs */
        if ( dict->cid_registry != 0xFFFFU )
          cffface->num_glyphs = cff->charset.max_cid + 1;
        else
          cffface->num_glyphs = cff->charstrings_index.count;

        /* set global bbox, as well as EM size */
        cffface->bbox.xMin =   dict->font_bbox.xMin            >> 16;
        cffface->bbox.yMin =   dict->font_bbox.yMin            >> 16;
        /* no `U' suffix here to 0xFFFF! */
        cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16;
        cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16;

        cffface->units_per_EM = (FT_UShort)( dict->units_per_em );

        cffface->ascender  = (FT_Short)( cffface->bbox.yMax );
        cffface->descender = (FT_Short)( cffface->bbox.yMin );

        cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 );
        if ( cffface->height < cffface->ascender - cffface->descender )
          cffface->height = (FT_Short)( cffface->ascender - cffface->descender );

        cffface->underline_position  =
          (FT_Short)( dict->underline_position >> 16 );
        cffface->underline_thickness =
          (FT_Short)( dict->underline_thickness >> 16 );

        /* retrieve font family & style name */
        cffface->family_name = cff_index_get_name( cff, face_index );
        if ( cffface->family_name )
        {
          char*  full   = cff_index_get_sid_string( cff,
                                                    dict->full_name );
          char*  fullp  = full;
          char*  family = cffface->family_name;
          char*  family_name = NULL;


          remove_subset_prefix( cffface->family_name );

          if ( dict->family_name )
          {
            family_name = cff_index_get_sid_string( cff,
                                                    dict->family_name );
            if ( family_name )
              family = family_name;
          }

          /* We try to extract the style name from the full name.   */
          /* We need to ignore spaces and dashes during the search. */
          if ( full && family )
          {
            while ( *fullp )
            {
              /* skip common characters at the start of both strings */
              if ( *fullp == *family )
              {
                family++;
                fullp++;
                continue;
              }

              /* ignore spaces and dashes in full name during comparison */
              if ( *fullp == ' ' || *fullp == '-' )
              {
                fullp++;
                continue;
              }

              /* ignore spaces and dashes in family name during comparison */
              if ( *family == ' ' || *family == '-' )
              {
                family++;
                continue;
              }

              if ( !*family && *fullp )
              {
                /* The full name begins with the same characters as the  */
                /* family name, with spaces and dashes removed.  In this */
                /* case, the remaining string in `fullp' will be used as */
                /* the style name.                                       */
                style_name = cff_strcpy( memory, fullp );

                /* remove the style part from the family name (if present) */
                remove_style( cffface->family_name, style_name );
              }
              break;
            }
          }
        }
        else
        {
          char  *cid_font_name =
                   cff_index_get_sid_string( cff,
                                             dict->cid_font_name );


          /* do we have a `/FontName' for a CID-keyed font? */
          if ( cid_font_name )
            cffface->family_name = cff_strcpy( memory, cid_font_name );
        }

        if ( style_name )
          cffface->style_name = style_name;
        else
          /* assume "Regular" style if we don't know better */
          cffface->style_name = cff_strcpy( memory, (char *)"Regular" );

        /*******************************************************************/
        /*                                                                 */
        /* Compute face flags.                                             */
        /*                                                                 */
        flags = FT_FACE_FLAG_SCALABLE   | /* scalable outlines */
                FT_FACE_FLAG_HORIZONTAL | /* horizontal data   */
                FT_FACE_FLAG_HINTER;      /* has native hinter */

        if ( sfnt_format )
          flags |= FT_FACE_FLAG_SFNT;

        /* fixed width font? */
        if ( dict->is_fixed_pitch )
          flags |= FT_FACE_FLAG_FIXED_WIDTH;

  /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */
#if 0
        /* kerning available? */
        if ( face->kern_pairs )
          flags |= FT_FACE_FLAG_KERNING;
#endif

        cffface->face_flags |= flags;

        /*******************************************************************/
        /*                                                                 */
        /* Compute style flags.                                            */
        /*                                                                 */
        flags = 0;

        if ( dict->italic_angle )
          flags |= FT_STYLE_FLAG_ITALIC;

        {
          char  *weight = cff_index_get_sid_string( cff,
                                                    dict->weight );


          if ( weight )
            if ( !ft_strcmp( weight, "Bold"  ) ||
                 !ft_strcmp( weight, "Black" ) )
              flags |= FT_STYLE_FLAG_BOLD;
        }

        /* double check */
        if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name )
          if ( !ft_strncmp( cffface->style_name, "Bold", 4 )  ||
               !ft_strncmp( cffface->style_name, "Black", 5 ) )
            flags |= FT_STYLE_FLAG_BOLD;

        cffface->style_flags = flags;
      }


#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
      /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */
      /* has unset this flag because of the 3.0 `post' table.          */
      if ( dict->cid_registry == 0xFFFFU )
        cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES;
#endif

      if ( dict->cid_registry != 0xFFFFU && pure_cff )
        cffface->face_flags |= FT_FACE_FLAG_CID_KEYED;


      /*******************************************************************/
      /*                                                                 */
      /* Compute char maps.                                              */
      /*                                                                 */

      /* Try to synthesize a Unicode charmap if there is none available */
      /* already.  If an OpenType font contains a Unicode "cmap", we    */
      /* will use it, whatever be in the CFF part of the file.          */
      {
        FT_CharMapRec  cmaprec;
        FT_CharMap     cmap;
        FT_UInt        nn;
        CFF_Encoding   encoding = &cff->encoding;


        for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ )
        {
          cmap = cffface->charmaps[nn];

          /* Windows Unicode? */
          if ( cmap->platform_id == TT_PLATFORM_MICROSOFT &&
               cmap->encoding_id == TT_MS_ID_UNICODE_CS   )
            goto Skip_Unicode;

          /* Apple Unicode platform id? */
          if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE )
            goto Skip_Unicode; /* Apple Unicode */
        }

        /* since CID-keyed fonts don't contain glyph names, we can't */
        /* construct a cmap                                          */
        if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU )
          goto Exit;

#ifdef FT_MAX_CHARMAP_CACHEABLE
        if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE )
        {
          FT_ERROR(( "cff_face_init: no Unicode cmap is found, "
                     "and too many subtables (%d) to add synthesized cmap\n",
                     nn ));
          goto Exit;
        }
#endif

        /* we didn't find a Unicode charmap -- synthesize one */
        cmaprec.face        = cffface;
        cmaprec.platform_id = TT_PLATFORM_MICROSOFT;
        cmaprec.encoding_id = TT_MS_ID_UNICODE_CS;
        cmaprec.encoding    = FT_ENCODING_UNICODE;

        nn = (FT_UInt)cffface->num_charmaps;

        error = FT_CMap_New( &CFF_CMAP_UNICODE_CLASS_REC_GET, NULL,
                             &cmaprec, NULL );
        if ( error                                      &&
             FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) )
          goto Exit;
        error = FT_Err_Ok;

        /* if no Unicode charmap was previously selected, select this one */
        if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps )
          cffface->charmap = cffface->charmaps[nn];

      Skip_Unicode:
#ifdef FT_MAX_CHARMAP_CACHEABLE
        if ( nn > FT_MAX_CHARMAP_CACHEABLE )
        {
          FT_ERROR(( "cff_face_init: Unicode cmap is found, "
                     "but too many preceding subtables (%d) to access\n",
                     nn - 1 ));
          goto Exit;
        }
#endif
        if ( encoding->count > 0 )
        {
          FT_CMap_Class  clazz;


          cmaprec.face        = cffface;
          cmaprec.platform_id = TT_PLATFORM_ADOBE;  /* Adobe platform id */

          if ( encoding->offset == 0 )
          {
            cmaprec.encoding_id = TT_ADOBE_ID_STANDARD;
            cmaprec.encoding    = FT_ENCODING_ADOBE_STANDARD;
            clazz               = &CFF_CMAP_ENCODING_CLASS_REC_GET;
          }
          else if ( encoding->offset == 1 )
          {
            cmaprec.encoding_id = TT_ADOBE_ID_EXPERT;
            cmaprec.encoding    = FT_ENCODING_ADOBE_EXPERT;
            clazz               = &CFF_CMAP_ENCODING_CLASS_REC_GET;
          }
          else
          {
            cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM;
            cmaprec.encoding    = FT_ENCODING_ADOBE_CUSTOM;
            clazz               = &CFF_CMAP_ENCODING_CLASS_REC_GET;
          }

          error = FT_CMap_New( clazz, NULL, &cmaprec, NULL );
        }
      }
    }

  Exit:
    return error;
  }
Esempio n. 12
0
  static FT_Error
  cff_encoding_load( CFF_Encoding  encoding,
                     CFF_Charset   charset,
                     FT_UInt       num_glyphs,
                     FT_Stream     stream,
                     FT_ULong      base_offset,
                     FT_ULong      offset )
  {
    FT_Error   error = CFF_Err_Ok;
    FT_UInt    count;
    FT_UInt    j;
    FT_UShort  glyph_sid;
    FT_UInt    glyph_code;


    /* Check for charset->sids.  If we do not have this, we fail. */
    if ( !charset->sids )
    {
      error = CFF_Err_Invalid_File_Format;
      goto Exit;
    }

    /* Zero out the code to gid/sid mappings. */
    for ( j = 0; j < 256; j++ )
    {
      encoding->sids [j] = 0;
      encoding->codes[j] = 0;
    }

    /* Note: The encoding table in a CFF font is indexed by glyph index;  */
    /* the first encoded glyph index is 1.  Hence, we read the character  */
    /* code (`glyph_code') at index j and make the assignment:            */
    /*                                                                    */
    /*    encoding->codes[glyph_code] = j + 1                             */
    /*                                                                    */
    /* We also make the assignment:                                       */
    /*                                                                    */
    /*    encoding->sids[glyph_code] = charset->sids[j + 1]               */
    /*                                                                    */
    /* This gives us both a code to GID and a code to SID mapping.        */

    if ( offset > 1 )
    {
      encoding->offset = base_offset + offset;

      /* we need to parse the table to determine its size */
      if ( FT_STREAM_SEEK( encoding->offset ) ||
           FT_READ_BYTE( encoding->format )   ||
           FT_READ_BYTE( count )              )
        goto Exit;

      switch ( encoding->format & 0x7F )
      {
      case 0:
        {
          FT_Byte*  p;


          /* By convention, GID 0 is always ".notdef" and is never */
          /* coded in the font.  Hence, the number of codes found  */
          /* in the table is `count+1'.                            */
          /*                                                       */
          encoding->count = count + 1;

          if ( FT_FRAME_ENTER( count ) )
            goto Exit;

          p = (FT_Byte*)stream->cursor;

          for ( j = 1; j <= count; j++ )
          {
            glyph_code = *p++;

            /* Make sure j is not too big. */
            if ( j < num_glyphs )
            {
              /* Assign code to GID mapping. */
              encoding->codes[glyph_code] = (FT_UShort)j;

              /* Assign code to SID mapping. */
              encoding->sids[glyph_code] = charset->sids[j];
            }
          }

          FT_FRAME_EXIT();
        }
        break;

      case 1:
        {
          FT_UInt  nleft;
          FT_UInt  i = 1;
          FT_UInt  k;


          encoding->count = 0;

          /* Parse the Format1 ranges. */
          for ( j = 0;  j < count; j++, i += nleft )
          {
            /* Read the first glyph code of the range. */
            if ( FT_READ_BYTE( glyph_code ) )
              goto Exit;

            /* Read the number of codes in the range. */
            if ( FT_READ_BYTE( nleft ) )
              goto Exit;

            /* Increment nleft, so we read `nleft + 1' codes/sids. */
            nleft++;

            /* compute max number of character codes */
            if ( (FT_UInt)nleft > encoding->count )
              encoding->count = nleft;

            /* Fill in the range of codes/sids. */
            for ( k = i; k < nleft + i; k++, glyph_code++ )
            {
              /* Make sure k is not too big. */
              if ( k < num_glyphs && glyph_code < 256 )
              {
                /* Assign code to GID mapping. */
                encoding->codes[glyph_code] = (FT_UShort)k;

                /* Assign code to SID mapping. */
                encoding->sids[glyph_code] = charset->sids[k];
              }
            }
          }

          /* simple check; one never knows what can be found in a font */
          if ( encoding->count > 256 )
            encoding->count = 256;
        }
        break;

      default:
        FT_ERROR(( "cff_encoding_load: invalid table format!\n" ));
        error = CFF_Err_Invalid_File_Format;
        goto Exit;
      }

      /* Parse supplemental encodings, if any. */
      if ( encoding->format & 0x80 )
      {
        FT_UInt  gindex;


        /* count supplements */
        if ( FT_READ_BYTE( count ) )
          goto Exit;

        for ( j = 0; j < count; j++ )
        {
          /* Read supplemental glyph code. */
          if ( FT_READ_BYTE( glyph_code ) )
            goto Exit;

          /* Read the SID associated with this glyph code. */
          if ( FT_READ_USHORT( glyph_sid ) )
            goto Exit;

          /* Assign code to SID mapping. */
          encoding->sids[glyph_code] = glyph_sid;

          /* First, look up GID which has been assigned to */
          /* SID glyph_sid.                                */
          for ( gindex = 0; gindex < num_glyphs; gindex++ )
          {
            if ( charset->sids[gindex] == glyph_sid )
            {
              encoding->codes[glyph_code] = (FT_UShort)gindex;
              break;
            }
          }
        }
      }
    }
    else
    {
      /* We take into account the fact a CFF font can use a predefined */
      /* encoding without containing all of the glyphs encoded by this */
      /* encoding (see the note at the end of section 12 in the CFF    */
      /* specification).                                               */

      switch ( (FT_UInt)offset )
      {
      case 0:
        /* First, copy the code to SID mapping. */
        FT_ARRAY_COPY( encoding->sids, cff_standard_encoding, 256 );
        goto Populate;

      case 1:
        /* First, copy the code to SID mapping. */
        FT_ARRAY_COPY( encoding->sids, cff_expert_encoding, 256 );

      Populate:
        /* Construct code to GID mapping from code to SID mapping */
        /* and charset.                                           */

        encoding->count = 0;

        error = cff_charset_compute_cids( charset, num_glyphs,
                                          stream->memory );
        if ( error )
          goto Exit;

        for ( j = 0; j < 256; j++ )
        {
          FT_UInt  sid = encoding->sids[j];
          FT_UInt  gid = 0;


          if ( sid )
            gid = cff_charset_cid_to_gindex( charset, sid );

          if ( gid != 0 )
          {
            encoding->codes[j] = (FT_UShort)gid;

            if ( encoding->count < j + 1 )
              encoding->count = j + 1;
          }
          else
          {
            encoding->codes[j] = 0;
            encoding->sids [j] = 0;
          }
        }
        break;

      default:
        FT_ERROR(( "cff_encoding_load: invalid table format!\n" ));
        error = CFF_Err_Invalid_File_Format;
        goto Exit;
      }
    }

  Exit:

    /* Clean up if there was an error. */
    return error;
  }
Esempio n. 13
0
  static FT_Error
  cff_charset_load( CFF_Charset  charset,
                    FT_UInt      num_glyphs,
                    FT_Stream    stream,
                    FT_ULong     base_offset,
                    FT_ULong     offset,
                    FT_Bool      invert )
  {
    FT_Memory  memory = stream->memory;
    FT_Error   error  = CFF_Err_Ok;
    FT_UShort  glyph_sid;


    /* If the the offset is greater than 2, we have to parse the */
    /* charset table.                                            */
    if ( offset > 2 )
    {
      FT_UInt  j;


      charset->offset = base_offset + offset;

      /* Get the format of the table. */
      if ( FT_STREAM_SEEK( charset->offset ) ||
           FT_READ_BYTE( charset->format )   )
        goto Exit;

      /* Allocate memory for sids. */
      if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
        goto Exit;

      /* assign the .notdef glyph */
      charset->sids[0] = 0;

      switch ( charset->format )
      {
      case 0:
        if ( num_glyphs > 0 )
        {
          if ( FT_FRAME_ENTER( ( num_glyphs - 1 ) * 2 ) )
            goto Exit;

          for ( j = 1; j < num_glyphs; j++ )
            charset->sids[j] = FT_GET_USHORT();

          FT_FRAME_EXIT();
        }
        break;

      case 1:
      case 2:
        {
          FT_UInt  nleft;
          FT_UInt  i;


          j = 1;

          while ( j < num_glyphs )
          {
            /* Read the first glyph sid of the range. */
            if ( FT_READ_USHORT( glyph_sid ) )
              goto Exit;

            /* Read the number of glyphs in the range.  */
            if ( charset->format == 2 )
            {
              if ( FT_READ_USHORT( nleft ) )
                goto Exit;
            }
            else
            {
              if ( FT_READ_BYTE( nleft ) )
                goto Exit;
            }

            /* Fill in the range of sids -- `nleft + 1' glyphs. */
            for ( i = 0; j < num_glyphs && i <= nleft; i++, j++, glyph_sid++ )
              charset->sids[j] = glyph_sid;
          }
        }
        break;

      default:
        FT_ERROR(( "cff_charset_load: invalid table format!\n" ));
        error = CFF_Err_Invalid_File_Format;
        goto Exit;
      }
    }
    else
    {
      /* Parse default tables corresponding to offset == 0, 1, or 2.  */
      /* CFF specification intimates the following:                   */
      /*                                                              */
      /* In order to use a predefined charset, the following must be  */
      /* true: The charset constructed for the glyphs in the font's   */
      /* charstrings dictionary must match the predefined charset in  */
      /* the first num_glyphs.                                        */

      charset->offset = offset;  /* record charset type */

      switch ( (FT_UInt)offset )
      {
      case 0:
        if ( num_glyphs > 229 )
        {
          FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
                     "predefined charset (Adobe ISO-Latin)!\n" ));
          error = CFF_Err_Invalid_File_Format;
          goto Exit;
        }

        /* Allocate memory for sids. */
        if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
          goto Exit;

        /* Copy the predefined charset into the allocated memory. */
        FT_ARRAY_COPY( charset->sids, cff_isoadobe_charset, num_glyphs );

        break;

      case 1:
        if ( num_glyphs > 166 )
        {
          FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
                     "predefined charset (Adobe Expert)!\n" ));
          error = CFF_Err_Invalid_File_Format;
          goto Exit;
        }

        /* Allocate memory for sids. */
        if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
          goto Exit;

        /* Copy the predefined charset into the allocated memory.     */
        FT_ARRAY_COPY( charset->sids, cff_expert_charset, num_glyphs );

        break;

      case 2:
        if ( num_glyphs > 87 )
        {
          FT_ERROR(( "cff_charset_load: implicit charset larger than\n"
                     "predefined charset (Adobe Expert Subset)!\n" ));
          error = CFF_Err_Invalid_File_Format;
          goto Exit;
        }

        /* Allocate memory for sids. */
        if ( FT_NEW_ARRAY( charset->sids, num_glyphs ) )
          goto Exit;

        /* Copy the predefined charset into the allocated memory.     */
        FT_ARRAY_COPY( charset->sids, cff_expertsubset_charset, num_glyphs );

        break;

      default:
        error = CFF_Err_Invalid_File_Format;
        goto Exit;
      }
    }

    /* we have to invert the `sids' array for subsetted CID-keyed fonts */
    if ( invert )
      error = cff_charset_compute_cids( charset, num_glyphs, memory );

  Exit:
    /* Clean up if there was an error. */
    if ( error )
    {
      FT_FREE( charset->sids );
      FT_FREE( charset->cids );
      charset->format = 0;
      charset->offset = 0;
      charset->sids   = 0;
    }

    return error;
  }
Esempio n. 14
0
  cff_font_load( FT_Stream  stream,
                 FT_Int     face_index,
                 CFF_Font   font,
                 FT_Bool    pure_cff )
  {
    static const FT_Frame_Field  cff_header_fields[] =
    {
#undef  FT_STRUCTURE
#define FT_STRUCTURE  CFF_FontRec

      FT_FRAME_START( 4 ),
        FT_FRAME_BYTE( version_major ),
        FT_FRAME_BYTE( version_minor ),
        FT_FRAME_BYTE( header_size ),
        FT_FRAME_BYTE( absolute_offsize ),
      FT_FRAME_END
    };

    FT_Error         error;
    FT_Memory        memory = stream->memory;
    FT_ULong         base_offset;
    CFF_FontRecDict  dict;


    FT_ZERO( font );

    font->stream = stream;
    font->memory = memory;
    dict         = &font->top_font.font_dict;
    base_offset  = FT_STREAM_POS();

    /* read CFF font header */
    if ( FT_STREAM_READ_FIELDS( cff_header_fields, font ) )
      goto Exit;

    /* check format */
    if ( font->version_major   != 1 ||
         font->header_size      < 4 ||
         font->absolute_offsize > 4 )
    {
      FT_TRACE2(( "[not a CFF font header!]\n" ));
      error = CFF_Err_Unknown_File_Format;
      goto Exit;
    }

    /* skip the rest of the header */
    if ( FT_STREAM_SKIP( font->header_size - 4 ) )
      goto Exit;

    /* read the name, top dict, string and global subrs index */
    if ( FT_SET_ERROR( cff_index_init( &font->name_index,
                                       stream, 0 ) )              ||
         FT_SET_ERROR( cff_index_init( &font->font_dict_index,
                                       stream, 0 ) )              ||
         FT_SET_ERROR( cff_index_init( &font->string_index,
                                       stream, 0 ) )              ||
         FT_SET_ERROR( cff_index_init( &font->global_subrs_index,
                                       stream, 1 ) )              )
      goto Exit;

    /* well, we don't really forget the `disabled' fonts... */
    font->num_faces = font->name_index.count;
    if ( face_index >= (FT_Int)font->num_faces )
    {
      FT_ERROR(( "cff_font_load: incorrect face index = %d\n",
                 face_index ));
      error = CFF_Err_Invalid_Argument;
    }

    /* in case of a font format check, simply exit now */
    if ( face_index < 0 )
      goto Exit;

    /* now, parse the top-level font dictionary */
    error = cff_subfont_load( &font->top_font,
                              &font->font_dict_index,
                              face_index,
                              stream,
                              base_offset );
    if ( error )
      goto Exit;

    if ( FT_STREAM_SEEK( base_offset + dict->charstrings_offset ) )
      goto Exit;

    error = cff_index_init( &font->charstrings_index, stream, 0 );
    if ( error )
      goto Exit;

    /* now, check for a CID font */
    if ( dict->cid_registry != 0xFFFFU )
    {
      CFF_IndexRec  fd_index;
      CFF_SubFont   sub;
      FT_UInt       idx;


      /* this is a CID-keyed font, we must now allocate a table of */
      /* sub-fonts, then load each of them separately              */
      if ( FT_STREAM_SEEK( base_offset + dict->cid_fd_array_offset ) )
        goto Exit;

      error = cff_index_init( &fd_index, stream, 0 );
      if ( error )
        goto Exit;

      if ( fd_index.count > CFF_MAX_CID_FONTS )
      {
        FT_ERROR(( "cff_font_load: FD array too large in CID font\n" ));
        goto Fail_CID;
      }

      /* allocate & read each font dict independently */
      font->num_subfonts = fd_index.count;
      if ( FT_NEW_ARRAY( sub, fd_index.count ) )
        goto Fail_CID;

      /* set up pointer table */
      for ( idx = 0; idx < fd_index.count; idx++ )
        font->subfonts[idx] = sub + idx;

      /* now load each subfont independently */
      for ( idx = 0; idx < fd_index.count; idx++ )
      {
        sub = font->subfonts[idx];
        error = cff_subfont_load( sub, &fd_index, idx,
                                  stream, base_offset );
        if ( error )
          goto Fail_CID;
      }

      /* now load the FD Select array */
      error = CFF_Load_FD_Select( &font->fd_select,
                                  font->charstrings_index.count,
                                  stream,
                                  base_offset + dict->cid_fd_select_offset );

    Fail_CID:
      cff_index_done( &fd_index );

      if ( error )
        goto Exit;
    }
    else
      font->num_subfonts = 0;

    /* read the charstrings index now */
    if ( dict->charstrings_offset == 0 )
    {
      FT_ERROR(( "cff_font_load: no charstrings offset!\n" ));
      error = CFF_Err_Unknown_File_Format;
      goto Exit;
    }

    /* explicit the global subrs */
    font->num_global_subrs = font->global_subrs_index.count;
    font->num_glyphs       = font->charstrings_index.count;

    error = cff_index_get_pointers( &font->global_subrs_index,
                                    &font->global_subrs ) ;

    if ( error )
      goto Exit;

    /* read the Charset and Encoding tables if available */
    if ( font->num_glyphs > 0 )
    {
      FT_Bool  invert = FT_BOOL( dict->cid_registry != 0xFFFFU && pure_cff );


      error = cff_charset_load( &font->charset, font->num_glyphs, stream,
                                base_offset, dict->charset_offset, invert );
      if ( error )
        goto Exit;

      /* CID-keyed CFFs don't have an encoding */
      if ( dict->cid_registry == 0xFFFFU )
      {
        error = cff_encoding_load( &font->encoding,
                                   &font->charset,
                                   font->num_glyphs,
                                   stream,
                                   base_offset,
                                   dict->encoding_offset );
        if ( error )
          goto Exit;
      }
    }

    /* get the font name (/CIDFontName for CID-keyed fonts, */
    /* /FontName otherwise)                                 */
    font->font_name = cff_index_get_name( &font->name_index, face_index );

  Exit:
    return error;
  }
Esempio n. 15
0
  T1_Get_Private_Dict( T1_Parser      parser,
                       PSAux_Service  psaux )
  {
    FT_Stream  stream = parser->stream;
    FT_Memory  memory = parser->root.memory;
    FT_Error   error  = T1_Err_Ok;
    FT_Long    size;


    if ( parser->in_pfb )
    {
      /* in the case of the PFB format, the private dictionary can be  */
      /* made of several segments.  We thus first read the number of   */
      /* segments to compute the total size of the private dictionary  */
      /* then re-read them into memory.                                */
      FT_Long    start_pos = FT_STREAM_POS();
      FT_UShort  tag;


      parser->private_len = 0;
      for (;;)
      {
        error = read_pfb_tag( stream, &tag, &size );
        if ( error )
          goto Fail;

        if ( tag != 0x8002U )
          break;

        parser->private_len += size;

        if ( FT_STREAM_SKIP( size ) )
          goto Fail;
      }

      /* Check that we have a private dictionary there */
      /* and allocate private dictionary buffer        */
      if ( parser->private_len == 0 )
      {
        FT_ERROR(( "T1_Get_Private_Dict:" ));
        FT_ERROR(( " invalid private dictionary section\n" ));
        error = T1_Err_Invalid_File_Format;
        goto Fail;
      }

      if ( FT_STREAM_SEEK( start_pos )                             ||
           FT_ALLOC( parser->private_dict, parser->private_len ) )
        goto Fail;

      parser->private_len = 0;
      for (;;)
      {
        error = read_pfb_tag( stream, &tag, &size );
        if ( error || tag != 0x8002U )
        {
          error = T1_Err_Ok;
          break;
        }

        if ( FT_STREAM_READ( parser->private_dict + parser->private_len,
                             size ) )
          goto Fail;

        parser->private_len += size;
      }
    }
    else
    {
      /* We have already `loaded' the whole PFA font file into memory; */
      /* if this is a memory resource, allocate a new block to hold    */
      /* the private dict.  Otherwise, simply overwrite into the base  */
      /* dictionary block in the heap.                                 */

      /* first of all, look at the `eexec' keyword */
      FT_Byte*  cur   = parser->base_dict;
      FT_Byte*  limit = cur + parser->base_len;
      FT_Byte   c;


    Again:
      for (;;)
      {
        c = cur[0];
        if ( c == 'e' && cur + 9 < limit )  /* 9 = 5 letters for `eexec' + */
                                            /* newline + 4 chars           */
        {
          if ( cur[1] == 'e' &&
               cur[2] == 'x' &&
               cur[3] == 'e' &&
               cur[4] == 'c' )
            break;
        }
        cur++;
        if ( cur >= limit )
        {
          FT_ERROR(( "T1_Get_Private_Dict:" ));
          FT_ERROR(( " could not find `eexec' keyword\n" ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
      }

      /* check whether `eexec' was real -- it could be in a comment */
      /* or string (as e.g. in u003043t.gsf from ghostscript)       */

      parser->root.cursor = parser->base_dict;
      parser->root.limit  = cur + 9;

      cur   = parser->root.cursor;
      limit = parser->root.limit;

      while ( cur < limit )
      {
        if ( *cur == 'e' && ft_strncmp( (char*)cur, "eexec", 5 ) == 0 )
          goto Found;

        T1_Skip_PS_Token( parser );
        if ( parser->root.error )
          break;
        T1_Skip_Spaces  ( parser );
        cur = parser->root.cursor;
      }

      /* we haven't found the correct `eexec'; go back and continue */
      /* searching                                                  */

      cur   = limit;
      limit = parser->base_dict + parser->base_len;
      goto Again;

      /* now determine where to write the _encrypted_ binary private  */
      /* dictionary.  We overwrite the base dictionary for disk-based */
      /* resources and allocate a new block otherwise                 */

    Found:
      parser->root.limit = parser->base_dict + parser->base_len;

      T1_Skip_PS_Token( parser );
      cur = parser->root.cursor;
      if ( *cur == '\r' )
      {
        cur++;
        if ( *cur == '\n' )
          cur++;
      }
      else if ( *cur == '\n' )
        cur++;
      else
      {
        FT_ERROR(( "T1_Get_Private_Dict:" ));
        FT_ERROR(( " `eexec' not properly terminated\n" ));
        error = T1_Err_Invalid_File_Format;
        goto Exit;
      }

      size = (FT_Long)( parser->base_len - ( cur - parser->base_dict ) );

      if ( parser->in_memory )
      {
        /* note that we allocate one more byte to put a terminating `0' */
        if ( FT_ALLOC( parser->private_dict, size + 1 ) )
          goto Fail;
        parser->private_len = size;
      }
      else
      {
        parser->single_block = 1;
        parser->private_dict = parser->base_dict;
        parser->private_len  = size;
        parser->base_dict    = 0;
        parser->base_len     = 0;
      }

      /* now determine whether the private dictionary is encoded in binary */
      /* or hexadecimal ASCII format -- decode it accordingly              */

      /* we need to access the next 4 bytes (after the final \r following */
      /* the `eexec' keyword); if they all are hexadecimal digits, then   */
      /* we have a case of ASCII storage                                  */

      if ( ft_isxdigit( cur[0] ) && ft_isxdigit( cur[1] ) &&
           ft_isxdigit( cur[2] ) && ft_isxdigit( cur[3] ) )
      {
        /* ASCII hexadecimal encoding */
        FT_Long  len;


        parser->root.cursor = cur;
        (void)psaux->ps_parser_funcs->to_bytes( &parser->root,
                                                parser->private_dict,
                                                parser->private_len,
                                                &len,
                                                0 );
        parser->private_len = len;

        /* put a safeguard */
        parser->private_dict[len] = '\0';
      }
      else
        /* binary encoding -- copy the private dict */
        FT_MEM_MOVE( parser->private_dict, cur, size );
    }

    /* we now decrypt the encoded binary private dictionary */
    psaux->t1_decrypt( parser->private_dict, parser->private_len, 55665U );

    /* replace the four random bytes at the beginning with whitespace */
    parser->private_dict[0] = ' ';
    parser->private_dict[1] = ' ';
    parser->private_dict[2] = ' ';
    parser->private_dict[3] = ' ';

    parser->root.base   = parser->private_dict;
    parser->root.cursor = parser->private_dict;
    parser->root.limit  = parser->root.cursor + parser->private_len;

  Fail:
  Exit:
    return error;
  }
Esempio n. 16
0
  tt_face_load_kern( TT_Face    face,
                     FT_Stream  stream )
  {
    FT_Error   error;
    FT_ULong   table_size;
    FT_Byte*   p;
    FT_Byte*   p_limit;
    FT_UInt    nn, num_tables;
    FT_UInt32  avail = 0, ordered = 0;


    /* the kern table is optional; exit silently if it is missing */
    error = face->goto_table( face, TTAG_kern, stream, &table_size );
    if ( error )
      goto Exit;

    if ( table_size < 4 )  /* the case of a malformed table */
    {
      FT_ERROR(( "tt_face_load_kern:"
                 " kerning table is too small - ignored\n" ));
      error = FT_THROW( Table_Missing );
      goto Exit;
    }

    if ( FT_FRAME_EXTRACT( table_size, face->kern_table ) )
    {
      FT_ERROR(( "tt_face_load_kern:"
                 " could not extract kerning table\n" ));
      goto Exit;
    }

    face->kern_table_size = table_size;

    p       = face->kern_table;
    p_limit = p + table_size;

    p         += 2; /* skip version */
    num_tables = FT_NEXT_USHORT( p );

    if ( num_tables > 32 ) /* we only support up to 32 sub-tables */
      num_tables = 32;

    for ( nn = 0; nn < num_tables; nn++ )
    {
      FT_UInt    num_pairs, length, coverage, format;
      FT_Byte*   p_next;
      FT_UInt32  mask = (FT_UInt32)1UL << nn;


      if ( p + 6 > p_limit )
        break;

      p_next = p;

      p += 2; /* skip version */
      length   = FT_NEXT_USHORT( p );
      coverage = FT_NEXT_USHORT( p );

      if ( length <= 6 + 8 )
        break;

      p_next += length;

      if ( p_next > p_limit )  /* handle broken table */
        p_next = p_limit;

      format = coverage >> 8;

      /* we currently only support format 0 kerning tables */
      if ( format != 0 )
        goto NextTable;

      /* only use horizontal kerning tables */
      if ( ( coverage & 3U ) != 0x0001 ||
           p + 8 > p_next              )
        goto NextTable;

      num_pairs = FT_NEXT_USHORT( p );
      p        += 6;

      if ( ( p_next - p ) < 6 * (int)num_pairs ) /* handle broken count */
        num_pairs = (FT_UInt)( ( p_next - p ) / 6 );

      avail |= mask;

      /*
       *  Now check whether the pairs in this table are ordered.
       *  We then can use binary search.
       */
      if ( num_pairs > 0 )
      {
        FT_ULong  count;
        FT_ULong  old_pair;


        old_pair = FT_NEXT_ULONG( p );
        p       += 2;

        for ( count = num_pairs - 1; count > 0; count-- )
        {
          FT_UInt32  cur_pair;


          cur_pair = FT_NEXT_ULONG( p );
          if ( cur_pair <= old_pair )
            break;

          p += 2;
          old_pair = cur_pair;
        }

        if ( count == 0 )
          ordered |= mask;
      }

    NextTable:
      p = p_next;
    }

    face->num_kern_tables = nn;
    face->kern_avail_bits = avail;
    face->kern_order_bits = ordered;

  Exit:
    return error;
  }
Esempio n. 17
0
  T1_Face_Init( FT_Stream      stream,
                T1_Face        face,
                FT_Int         face_index,
                FT_Int         num_params,
                FT_Parameter*  params )
  {
    FT_Error            error;
    FT_Service_PsCMaps  psnames;
    PSAux_Service       psaux;
    T1_Font             type1 = &face->type1;
    PS_FontInfo         info = &type1->font_info;

    FT_UNUSED( num_params );
    FT_UNUSED( params );
    FT_UNUSED( stream );


    face->root.num_faces = 1;

    FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
    face->psnames = psnames;

    face->psaux = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
                                           "psaux" );
    psaux = (PSAux_Service)face->psaux;

    face->pshinter = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ),
                                              "pshinter" );

    /* open the tokenizer; this will also check the font format */
    error = T1_Open_Face( face );
    if ( error )
      goto Exit;

    /* if we just wanted to check the format, leave successfully now */
    if ( face_index < 0 )
      goto Exit;

    /* check the face index */
    if ( face_index > 0 )
    {
      FT_ERROR(( "T1_Face_Init: invalid face index\n" ));
      error = T1_Err_Invalid_Argument;
      goto Exit;
    }

    /* now load the font program into the face object */

    /* initialize the face object fields */

    /* set up root face fields */
    {
      FT_Face  root = (FT_Face)&face->root;


      root->num_glyphs = type1->num_glyphs;
      root->face_index = 0;

      root->face_flags = FT_FACE_FLAG_SCALABLE    |
                         FT_FACE_FLAG_HORIZONTAL  |
                         FT_FACE_FLAG_GLYPH_NAMES |
                         FT_FACE_FLAG_HINTER;

      if ( info->is_fixed_pitch )
        root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;

      if ( face->blend )
        root->face_flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;

      /* XXX: TODO -- add kerning with .afm support */


      /* The following code to extract the family and the style is very   */
      /* simplistic and might get some things wrong.  For a full-featured */
      /* algorithm you might have a look at the whitepaper given at       */
      /*                                                                  */
      /*   http://blogs.msdn.com/text/archive/2007/04/23/wpf-font-selection-model.aspx */

      /* get style name -- be careful, some broken fonts only */
      /* have a `/FontName' dictionary entry!                 */
      root->family_name = info->family_name;
      root->style_name  = NULL;

      if ( root->family_name )
      {
        char*  full   = info->full_name;
        char*  family = root->family_name;


        if ( full )
        {
          FT_Bool  the_same = TRUE;


          while ( *full )
          {
            if ( *full == *family )
            {
              family++;
              full++;
            }
            else
            {
              if ( *full == ' ' || *full == '-' )
                full++;
              else if ( *family == ' ' || *family == '-' )
                family++;
              else
              {
                the_same = FALSE;

                if ( !*family )
                  root->style_name = full;
                break;
              }
            }
          }

          if ( the_same )
            root->style_name = (char *)"Regular";
        }
      }
      else
      {
        /* do we have a `/FontName'? */
        if ( type1->font_name )
          root->family_name = type1->font_name;
      }

      if ( !root->style_name )
      {
        if ( info->weight )
          root->style_name = info->weight;
        else
          /* assume `Regular' style because we don't know better */
          root->style_name = (char *)"Regular";
      }

      /* compute style flags */
      root->style_flags = 0;
      if ( info->italic_angle )
        root->style_flags |= FT_STYLE_FLAG_ITALIC;
      if ( info->weight )
      {
        if ( !ft_strcmp( info->weight, "Bold"  ) ||
             !ft_strcmp( info->weight, "Black" ) )
          root->style_flags |= FT_STYLE_FLAG_BOLD;
      }

      /* no embedded bitmap support */
      root->num_fixed_sizes = 0;
      root->available_sizes = 0;

      root->bbox.xMin =   type1->font_bbox.xMin            >> 16;
      root->bbox.yMin =   type1->font_bbox.yMin            >> 16;
      /* no `U' suffix here to 0xFFFF! */
      root->bbox.xMax = ( type1->font_bbox.xMax + 0xFFFF ) >> 16;
      root->bbox.yMax = ( type1->font_bbox.yMax + 0xFFFF ) >> 16;

      /* Set units_per_EM if we didn't set it in parse_font_matrix. */
      if ( !root->units_per_EM )
        root->units_per_EM = 1000;

      root->ascender  = (FT_Short)( root->bbox.yMax );
      root->descender = (FT_Short)( root->bbox.yMin );

      root->height = (FT_Short)( ( root->units_per_EM * 12 ) / 10 );
      if ( root->height < root->ascender - root->descender )
        root->height = (FT_Short)( root->ascender - root->descender );

      /* now compute the maximum advance width */
      root->max_advance_width =
        (FT_Short)( root->bbox.xMax );
      {
        FT_Pos  max_advance;


        error = T1_Compute_Max_Advance( face, &max_advance );

        /* in case of error, keep the standard width */
        if ( !error )
          root->max_advance_width = (FT_Short)FIXED_TO_INT( max_advance );
        else
          error = T1_Err_Ok;   /* clear error */
      }

      root->max_advance_height = root->height;

      root->underline_position  = (FT_Short)info->underline_position;
      root->underline_thickness = (FT_Short)info->underline_thickness;
    }

    {
      FT_Face  root = &face->root;


      if ( psnames && psaux )
      {
        FT_CharMapRec    charmap;
        T1_CMap_Classes  cmap_classes = psaux->t1_cmap_classes;
        FT_CMap_Class    clazz;


        charmap.face = root;

        /* first of all, try to synthesize a Unicode charmap */
        charmap.platform_id = 3;
        charmap.encoding_id = 1;
        charmap.encoding    = FT_ENCODING_UNICODE;

        FT_CMap_New( cmap_classes->unicode, NULL, &charmap, NULL );

        /* now, generate an Adobe Standard encoding when appropriate */
        charmap.platform_id = 7;
        clazz               = NULL;

        switch ( type1->encoding_type )
        {
        case T1_ENCODING_TYPE_STANDARD:
          charmap.encoding    = FT_ENCODING_ADOBE_STANDARD;
          charmap.encoding_id = TT_ADOBE_ID_STANDARD;
          clazz               = cmap_classes->standard;
          break;

        case T1_ENCODING_TYPE_EXPERT:
          charmap.encoding    = FT_ENCODING_ADOBE_EXPERT;
          charmap.encoding_id = TT_ADOBE_ID_EXPERT;
          clazz               = cmap_classes->expert;
          break;

        case T1_ENCODING_TYPE_ARRAY:
          charmap.encoding    = FT_ENCODING_ADOBE_CUSTOM;
          charmap.encoding_id = TT_ADOBE_ID_CUSTOM;
          clazz               = cmap_classes->custom;
          break;

        case T1_ENCODING_TYPE_ISOLATIN1:
          charmap.encoding    = FT_ENCODING_ADOBE_LATIN_1;
          charmap.encoding_id = TT_ADOBE_ID_LATIN_1;
          clazz               = cmap_classes->unicode;
          break;

        default:
          ;
        }

        if ( clazz )
          FT_CMap_New( clazz, NULL, &charmap, NULL );

#if 0
        /* Select default charmap */
        if (root->num_charmaps)
          root->charmap = root->charmaps[0];
#endif
      }
    }

  Exit:
    return error;
  }
Esempio n. 18
0
  static FT_Error
  load_format_20( TT_Face    face,
                  FT_Stream  stream,
                  FT_Long    post_limit )
  {
    FT_Memory   memory = stream->memory;
    FT_Error    error;

    FT_Int      num_glyphs;
    FT_UShort   num_names;

    FT_UShort*  glyph_indices = 0;
    FT_Char**   name_strings  = 0;


    if ( FT_READ_USHORT( num_glyphs ) )
      goto Exit;

    /* UNDOCUMENTED!  The number of glyphs in this table can be smaller */
    /* than the value in the maxp table (cf. cyberbit.ttf).             */

    /* There already exist fonts which have more than 32768 glyph names */
    /* in this table, so the test for this threshold has been dropped.  */

    if ( num_glyphs > face->max_profile.numGlyphs )
    {
      error = FT_THROW( Invalid_File_Format );
      goto Exit;
    }

    /* load the indices */
    {
      FT_Int  n;


      if ( FT_NEW_ARRAY ( glyph_indices, num_glyphs ) ||
           FT_FRAME_ENTER( num_glyphs * 2L )          )
        goto Fail;

      for ( n = 0; n < num_glyphs; n++ )
        glyph_indices[n] = FT_GET_USHORT();

      FT_FRAME_EXIT();
    }

    /* compute number of names stored in table */
    {
      FT_Int  n;


      num_names = 0;

      for ( n = 0; n < num_glyphs; n++ )
      {
        FT_Int  idx;


        idx = glyph_indices[n];
        if ( idx >= 258 )
        {
          idx -= 257;
          if ( idx > num_names )
            num_names = (FT_UShort)idx;
        }
      }
    }

    /* now load the name strings */
    {
      FT_UShort  n;


      if ( FT_NEW_ARRAY( name_strings, num_names ) )
        goto Fail;

      for ( n = 0; n < num_names; n++ )
      {
        FT_UInt  len;


        if ( FT_STREAM_POS() >= post_limit )
          break;
        else
        {
          FT_TRACE6(( "load_format_20: %d byte left in post table\n",
                      post_limit - FT_STREAM_POS() ));

          if ( FT_READ_BYTE( len ) )
            goto Fail1;
        }

        if ( (FT_Int)len > post_limit                   ||
             FT_STREAM_POS() > post_limit - (FT_Int)len )
        {
          FT_ERROR(( "load_format_20:"
                     " exceeding string length (%d),"
                     " truncating at end of post table (%d byte left)\n",
                     len, post_limit - FT_STREAM_POS() ));
          len = FT_MAX( 0, post_limit - FT_STREAM_POS() );
        }

        if ( FT_NEW_ARRAY( name_strings[n], len + 1 ) ||
             FT_STREAM_READ( name_strings[n], len   ) )
          goto Fail1;

        name_strings[n][len] = '\0';
      }

      if ( n < num_names )
      {
        FT_ERROR(( "load_format_20:"
                   " all entries in post table are already parsed,"
                   " using NULL names for gid %d - %d\n",
                    n, num_names - 1 ));
        for ( ; n < num_names; n++ )
          if ( FT_NEW_ARRAY( name_strings[n], 1 ) )
            goto Fail1;
          else
            name_strings[n][0] = '\0';
      }
    }

    /* all right, set table fields and exit successfully */
    {
      TT_Post_20  table = &face->postscript_names.names.format_20;


      table->num_glyphs    = (FT_UShort)num_glyphs;
      table->num_names     = (FT_UShort)num_names;
      table->glyph_indices = glyph_indices;
      table->glyph_names   = name_strings;
    }
    return FT_Err_Ok;

  Fail1:
    {
      FT_UShort  n;


      for ( n = 0; n < num_names; n++ )
        FT_FREE( name_strings[n] );
    }

  Fail:
    FT_FREE( name_strings );
    FT_FREE( glyph_indices );

  Exit:
    return error;
  }
Esempio n. 19
0
  tt_face_init( FT_Stream      stream,
                FT_Face        ttface,      /* TT_Face */
                FT_Int         face_index,
                FT_Int         num_params,
                FT_Parameter*  params )
  {
    FT_Error      error;
    FT_Library    library;
    SFNT_Service  sfnt;
    TT_Face       face = (TT_Face)ttface;


    FT_TRACE2(( "TTF driver\n" ));

    library = ttface->driver->root.library;

    sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
    if ( !sfnt )
    {
      FT_ERROR(( "tt_face_init: cannot access `sfnt' module\n" ));
      error = FT_THROW( Missing_Module );
      goto Exit;
    }

    /* create input stream from resource */
    if ( FT_STREAM_SEEK( 0 ) )
      goto Exit;

    /* check that we have a valid TrueType file */
    error = sfnt->init_face( stream, face, face_index, num_params, params );

    /* Stream may have changed. */
    stream = face->root.stream;

    if ( error )
      goto Exit;

    /* We must also be able to accept Mac/GX fonts, as well as OT ones. */
    /* The 0x00020000 tag is completely undocumented; some fonts from   */
    /* Arphic made for Chinese Windows 3.1 have this.                   */
    if ( face->format_tag != 0x00010000L &&    /* MS fonts  */
         face->format_tag != 0x00020000L &&    /* CJK fonts for Win 3.1 */
         face->format_tag != TTAG_true   )     /* Mac fonts */
    {
      FT_TRACE2(( "  not a TTF font\n" ));
      goto Bad_Format;
    }

#ifdef TT_USE_BYTECODE_INTERPRETER
    ttface->face_flags |= FT_FACE_FLAG_HINTER;
#endif

    /* If we are performing a simple font format check, exit immediately. */
    if ( face_index < 0 )
      return FT_Err_Ok;

    /* Load font directory */
    error = sfnt->load_face( stream, face, face_index, num_params, params );
    if ( error )
      goto Exit;

    if ( tt_check_trickyness( ttface ) )
      ttface->face_flags |= FT_FACE_FLAG_TRICKY;

    error = tt_face_load_hdmx( face, stream );
    if ( error )
      goto Exit;

    if ( FT_IS_SCALABLE( ttface ) )
    {

#ifdef FT_CONFIG_OPTION_INCREMENTAL

      if ( !ttface->internal->incremental_interface )
        error = tt_face_load_loca( face, stream );
      if ( !error )
        error = tt_face_load_cvt( face, stream );
      if ( !error )
        error = tt_face_load_fpgm( face, stream );
      if ( !error )
        error = tt_face_load_prep( face, stream );

      /* Check the scalable flag based on `loca'. */
      if ( !ttface->internal->incremental_interface &&
           ttface->num_fixed_sizes                  &&
           face->glyph_locations                    &&
           tt_check_single_notdef( ttface )         )
      {
        FT_TRACE5(( "tt_face_init:"
                    " Only the `.notdef' glyph has an outline.\n"
                    "             "
                    " Resetting scalable flag to FALSE.\n" ));

        ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
      }

#else /* !FT_CONFIG_OPTION_INCREMENTAL */

      if ( !error )
        error = tt_face_load_loca( face, stream );
      if ( !error )
        error = tt_face_load_cvt( face, stream );
      if ( !error )
        error = tt_face_load_fpgm( face, stream );
      if ( !error )
        error = tt_face_load_prep( face, stream );

      /* Check the scalable flag based on `loca'. */
      if ( ttface->num_fixed_sizes          &&
           face->glyph_locations            &&
           tt_check_single_notdef( ttface ) )
      {
        FT_TRACE5(( "tt_face_init:"
                    " Only the `.notdef' glyph has an outline.\n"
                    "             "
                    " Resetting scalable flag to FALSE.\n" ));

        ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
      }

#endif /* !FT_CONFIG_OPTION_INCREMENTAL */

    }

#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT

    {
      FT_Int  instance_index = face_index >> 16;


      if ( FT_HAS_MULTIPLE_MASTERS( ttface ) &&
           instance_index > 0                )
      {
        error = TT_Get_MM_Var( face, NULL );
        if ( error )
          goto Exit;

        if ( face->blend->mmvar->namedstyle )
        {
          FT_Memory  memory = ttface->memory;

          FT_Var_Named_Style*  named_style;
          FT_String*           style_name;


          /* in `face_index', the instance index starts with value 1 */
          named_style = face->blend->mmvar->namedstyle + instance_index - 1;
          error = sfnt->get_name( face,
                                  (FT_UShort)named_style->strid,
                                  &style_name );
          if ( error )
            goto Exit;

          /* set style name; if already set, replace it */
          if ( face->root.style_name )
            FT_FREE( face->root.style_name );
          face->root.style_name = style_name;

          /* finally, select the named instance */
          error = TT_Set_Var_Design( face,
                                     face->blend->mmvar->num_axis,
                                     named_style->coords );
          if ( error )
            goto Exit;
        }
      }
    }

#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */

    /* initialize standard glyph loading routines */
    TT_Init_Glyph_Loading( face );

  Exit:
    return error;

  Bad_Format:
    error = FT_THROW( Unknown_File_Format );
    goto Exit;
  }
Esempio n. 20
0
  pfr_log_font_load( PFR_LogFont  log_font,
                     FT_Stream    stream,
                     FT_UInt      idx,
                     FT_UInt32    section_offset,
                     FT_Bool      size_increment )
  {
    FT_UInt    num_log_fonts;
    FT_UInt    flags;
    FT_UInt32  offset;
    FT_UInt32  size;
    FT_Error   error;


    if ( FT_STREAM_SEEK( section_offset ) ||
         FT_READ_USHORT( num_log_fonts )  )
      goto Exit;

    if ( idx >= num_log_fonts )
      return PFR_Err_Invalid_Argument;

    if ( FT_STREAM_SKIP( idx * 5 ) ||
         FT_READ_USHORT( size )    ||
         FT_READ_UOFF3 ( offset )  )
      goto Exit;

    /* save logical font size and offset */
    log_font->size   = size;
    log_font->offset = offset;

    /* now, check the rest of the table before loading it */
    {
      FT_Byte*  p;
      FT_Byte*  limit;
      FT_UInt   local;


      if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( size ) )
        goto Exit;

      p     = stream->cursor;
      limit = p + size;

      PFR_CHECK(13);

      log_font->matrix[0] = PFR_NEXT_LONG( p );
      log_font->matrix[1] = PFR_NEXT_LONG( p );
      log_font->matrix[2] = PFR_NEXT_LONG( p );
      log_font->matrix[3] = PFR_NEXT_LONG( p );

      flags = PFR_NEXT_BYTE( p );

      local = 0;
      if ( flags & PFR_LOG_STROKE )
      {
        local++;
        if ( flags & PFR_LOG_2BYTE_STROKE )
          local++;

        if ( (flags & PFR_LINE_JOIN_MASK) == PFR_LINE_JOIN_MITER )
          local += 3;
      }
      if ( flags & PFR_LOG_BOLD )
      {
        local++;
        if ( flags & PFR_LOG_2BYTE_BOLD )
          local++;
      }

      PFR_CHECK( local );

      if ( flags & PFR_LOG_STROKE )
      {
        log_font->stroke_thickness = ( flags & PFR_LOG_2BYTE_STROKE )
                                     ? PFR_NEXT_SHORT( p )
                                     : PFR_NEXT_BYTE( p );

        if ( ( flags & PFR_LINE_JOIN_MASK ) == PFR_LINE_JOIN_MITER )
          log_font->miter_limit = PFR_NEXT_LONG( p );
      }

      if ( flags & PFR_LOG_BOLD )
      {
        log_font->bold_thickness = ( flags & PFR_LOG_2BYTE_BOLD )
                                   ? PFR_NEXT_SHORT( p )
                                   : PFR_NEXT_BYTE( p );
      }

      if ( flags & PFR_LOG_EXTRA_ITEMS )
      {
        error = pfr_extra_items_skip( &p, limit );
        if (error) goto Fail;
      }

      PFR_CHECK(5);
      log_font->phys_size   = PFR_NEXT_USHORT( p );
      log_font->phys_offset = PFR_NEXT_ULONG( p );
      if ( size_increment )
      {
        PFR_CHECK( 1 );
        log_font->phys_size += (FT_UInt32)PFR_NEXT_BYTE( p ) << 16;
      }
    }

  Fail:
    FT_FRAME_EXIT();

  Exit:
    return error;

  Too_Short:
    FT_ERROR(( "pfr_log_font_load: invalid logical font table\n" ));
    error = PFR_Err_Invalid_Table;
    goto Fail;
  }
Esempio n. 21
0
FT_New_Stream( const char*  filepathname,
               FT_Stream    stream )
{
    int          file;
    struct stat  stat_buf;


    if ( !stream )
        return FT_Err_Invalid_Stream_Handle;

    /* open the file */
    file = open( filepathname, O_RDONLY );
    if ( file < 0 )
    {
        FT_ERROR(( "FT_New_Stream:" ));
        FT_ERROR(( " could not open `%s'\n", filepathname ));
        return FT_Err_Cannot_Open_Resource;
    }

    if ( fstat( file, &stat_buf ) < 0 )
    {
        FT_ERROR(( "FT_New_Stream:" ));
        FT_ERROR(( " could not `fstat' file `%s'\n", filepathname ));
        goto Fail_Map;
    }

    stream->size = stat_buf.st_size;
    stream->pos  = 0;
    stream->base = (unsigned char *)mmap( NULL,
                                          stream->size,
                                          PROT_READ,
                                          MAP_FILE | MAP_PRIVATE,
                                          file,
                                          0 );

    if ( (long)stream->base == -1 )
    {
        FT_ERROR(( "FT_New_Stream:" ));
        FT_ERROR(( " could not `mmap' file `%s'\n", filepathname ));
        goto Fail_Map;
    }

    close( file );

    stream->descriptor.pointer = stream->base;
    stream->pathname.pointer   = (char*)filepathname;

    stream->close = ft_close_stream;
    stream->read  = 0;

    FT_TRACE1(( "FT_New_Stream:" ));
    FT_TRACE1(( " opened `%s' (%d bytes) successfully\n",
                filepathname, stream->size ));

    return FT_Err_Ok;

Fail_Map:
    close( file );

    stream->base = NULL;
    stream->size = 0;
    stream->pos  = 0;

    return FT_Err_Cannot_Open_Stream;
}
Esempio n. 22
0
  pfr_extra_item_load_bitmap_info( FT_Byte*     p,
                                   FT_Byte*     limit,
                                   PFR_PhyFont  phy_font )
  {
    FT_Memory   memory = phy_font->memory;
    PFR_Strike  strike;
    FT_UInt     flags0;
    FT_UInt     n, count, size1;
    FT_Error    error = PFR_Err_Ok;


    PFR_CHECK( 5 );

    p += 3;  /* skip bctSize */
    flags0 = PFR_NEXT_BYTE( p );
    count  = PFR_NEXT_BYTE( p );

    /* re-allocate when needed */
    if ( phy_font->num_strikes + count > phy_font->max_strikes )
    {
      FT_UInt  new_max = FT_PAD_CEIL( phy_font->num_strikes + count, 4 );


      if ( FT_RENEW_ARRAY( phy_font->strikes,
                           phy_font->num_strikes,
                           new_max ) )
        goto Exit;

      phy_font->max_strikes = new_max;
    }

    size1 = 1 + 1 + 1 + 2 + 2 + 1;
    if ( flags0 & PFR_STRIKE_2BYTE_XPPM )
      size1++;

    if ( flags0 & PFR_STRIKE_2BYTE_YPPM )
      size1++;

    if ( flags0 & PFR_STRIKE_3BYTE_SIZE )
      size1++;

    if ( flags0 & PFR_STRIKE_3BYTE_OFFSET )
      size1++;

    if ( flags0 & PFR_STRIKE_2BYTE_COUNT )
      size1++;

    strike = phy_font->strikes + phy_font->num_strikes;

    PFR_CHECK( count * size1 );

    for ( n = 0; n < count; n++, strike++ )
    {
      strike->x_ppm       = ( flags0 & PFR_STRIKE_2BYTE_XPPM )
                            ? PFR_NEXT_USHORT( p )
                            : PFR_NEXT_BYTE( p );

      strike->y_ppm       = ( flags0 & PFR_STRIKE_2BYTE_YPPM )
                            ? PFR_NEXT_USHORT( p )
                            : PFR_NEXT_BYTE( p );

      strike->flags       = PFR_NEXT_BYTE( p );

      strike->bct_size    = ( flags0 & PFR_STRIKE_3BYTE_SIZE )
                            ? PFR_NEXT_ULONG( p )
                            : PFR_NEXT_USHORT( p );

      strike->bct_offset  = ( flags0 & PFR_STRIKE_3BYTE_OFFSET )
                            ? PFR_NEXT_ULONG( p )
                            : PFR_NEXT_USHORT( p );

      strike->num_bitmaps = ( flags0 & PFR_STRIKE_2BYTE_COUNT )
                            ? PFR_NEXT_USHORT( p )
                            : PFR_NEXT_BYTE( p );
    }

    phy_font->num_strikes += count;

  Exit:
    return error;

  Too_Short:
    error = PFR_Err_Invalid_Table;
    FT_ERROR(( "pfr_extra_item_load_bitmap_info:"
               " invalid bitmap info table\n" ));
    goto Exit;
  }
Esempio n. 23
0
  static void
  t42_parse_sfnts( T42_Face    face,
                   T42_Loader  loader )
  {
    T42_Parser  parser = &loader->parser;
    FT_Memory   memory = parser->root.memory;
    FT_Byte*    cur;
    FT_Byte*    limit  = parser->root.limit;
    FT_Error    error;
    FT_Int      num_tables = 0;
    FT_Long     count;

    FT_ULong    n, string_size, old_string_size, real_size;
    FT_Byte*    string_buf = NULL;
    FT_Bool     allocated  = 0;

    T42_Load_Status  status;


    /* The format is                                */
    /*                                              */
    /*   /sfnts [ <hexstring> <hexstring> ... ] def */
    /*                                              */
    /* or                                           */
    /*                                              */
    /*   /sfnts [                                   */
    /*      <num_bin_bytes> RD <binary data>        */
    /*      <num_bin_bytes> RD <binary data>        */
    /*      ...                                     */
    /*   ] def                                      */
    /*                                              */
    /* with exactly one space after the `RD' token. */

    T1_Skip_Spaces( parser );

    if ( parser->root.cursor >= limit || *parser->root.cursor++ != '[' )
    {
      FT_ERROR(( "t42_parse_sfnts: can't find begin of sfnts vector\n" ));
      error = FT_THROW( Invalid_File_Format );
      goto Fail;
    }

    T1_Skip_Spaces( parser );
    status          = BEFORE_START;
    string_size     = 0;
    old_string_size = 0;
    count           = 0;

    while ( parser->root.cursor < limit )
    {
      cur = parser->root.cursor;

      if ( *cur == ']' )
      {
        parser->root.cursor++;
        goto Exit;
      }

      else if ( *cur == '<' )
      {
        T1_Skip_PS_Token( parser );
        if ( parser->root.error )
          goto Exit;

        /* don't include delimiters */
        string_size = (FT_ULong)( ( parser->root.cursor - cur - 2 + 1 ) / 2 );
        if ( !string_size )
        {
          FT_ERROR(( "t42_parse_sfnts: invalid data in sfnts array\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Fail;
        }
        if ( FT_REALLOC( string_buf, old_string_size, string_size ) )
          goto Fail;

        allocated = 1;

        parser->root.cursor = cur;
        (void)T1_ToBytes( parser, string_buf, string_size, &real_size, 1 );
        old_string_size = string_size;
        string_size     = real_size;
      }

      else if ( ft_isdigit( *cur ) )
      {
        FT_Long  tmp;


        if ( allocated )
        {
          FT_ERROR(( "t42_parse_sfnts: "
                     "can't handle mixed binary and hex strings\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Fail;
        }

        tmp = T1_ToInt( parser );
        if ( tmp < 0 )
        {
          FT_ERROR(( "t42_parse_sfnts: invalid string size\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Fail;
        }
        else
          string_size = (FT_ULong)tmp;

        T1_Skip_PS_Token( parser );             /* `RD' */
        if ( parser->root.error )
          return;

        string_buf = parser->root.cursor + 1;   /* one space after `RD' */

        if ( (FT_ULong)( limit - parser->root.cursor ) < string_size )
        {
          FT_ERROR(( "t42_parse_sfnts: too much binary data\n" ));
          error = FT_THROW( Invalid_File_Format );
          goto Fail;
        }
        else
          parser->root.cursor += string_size + 1;
      }

      if ( !string_buf )
      {
        FT_ERROR(( "t42_parse_sfnts: invalid data in sfnts array\n" ));
        error = FT_THROW( Invalid_File_Format );
        goto Fail;
      }

      /* A string can have a trailing zero (odd) byte for padding. */
      /* Ignore it.                                                */
      if ( ( string_size & 1 ) && string_buf[string_size - 1] == 0 )
        string_size--;

      if ( !string_size )
      {
        FT_ERROR(( "t42_parse_sfnts: invalid string\n" ));
        error = FT_THROW( Invalid_File_Format );
        goto Fail;
      }

      for ( n = 0; n < string_size; n++ )
      {
        switch ( status )
        {
        case BEFORE_START:
          /* load offset table, 12 bytes */
          if ( count < 12 )
          {
            face->ttf_data[count++] = string_buf[n];
            continue;
          }
          else
          {
            num_tables     = 16 * face->ttf_data[4] + face->ttf_data[5];
            status         = BEFORE_TABLE_DIR;
            face->ttf_size = 12 + 16 * num_tables;

            if ( (FT_Long)( limit - parser->root.cursor ) < face->ttf_size )
            {
              FT_ERROR(( "t42_parse_sfnts: invalid data in sfnts array\n" ));
              error = FT_THROW( Invalid_File_Format );
              goto Fail;
            }

            if ( FT_REALLOC( face->ttf_data, 12, face->ttf_size ) )
              goto Fail;
          }
          /* fall through */

        case BEFORE_TABLE_DIR:
          /* the offset table is read; read the table directory */
          if ( count < face->ttf_size )
          {
            face->ttf_data[count++] = string_buf[n];
            continue;
          }
          else
          {
            int       i;
            FT_ULong  len;


            for ( i = 0; i < num_tables; i++ )
            {
              FT_Byte*  p = face->ttf_data + 12 + 16 * i + 12;


              len = FT_PEEK_ULONG( p );

              /* Pad to a 4-byte boundary length */
              face->ttf_size += (FT_Long)( ( len + 3 ) & ~3U );
            }

            status = OTHER_TABLES;

            /* there are no more than 256 tables, so no size check here */
            if ( FT_REALLOC( face->ttf_data, 12 + 16 * num_tables,
                             face->ttf_size + 1 ) )
              goto Fail;
          }
          /* fall through */

        case OTHER_TABLES:
          /* all other tables are just copied */
          if ( count >= face->ttf_size )
          {
            FT_ERROR(( "t42_parse_sfnts: too much binary data\n" ));
            error = FT_THROW( Invalid_File_Format );
            goto Fail;
          }
          face->ttf_data[count++] = string_buf[n];
        }
      }

      T1_Skip_Spaces( parser );
    }

    /* if control reaches this point, the format was not valid */
    error = FT_THROW( Invalid_File_Format );

  Fail:
    parser->root.error = error;

  Exit:
    if ( allocated )
      FT_FREE( string_buf );
  }
Esempio n. 24
0
  pfr_extra_item_load_kerning_pairs( FT_Byte*     p,
                                     FT_Byte*     limit,
                                     PFR_PhyFont  phy_font )
  {
    PFR_KernItem  item   = NULL;
    FT_Error      error  = PFR_Err_Ok;
    FT_Memory     memory = phy_font->memory;


    FT_TRACE2(( "pfr_extra_item_load_kerning_pairs()\n" ));

    if ( FT_NEW( item ) )
      goto Exit;

    PFR_CHECK( 4 );

    item->pair_count = PFR_NEXT_BYTE( p );
    item->base_adj   = PFR_NEXT_SHORT( p );
    item->flags      = PFR_NEXT_BYTE( p );
    item->offset     = phy_font->offset + ( p - phy_font->cursor );

#ifndef PFR_CONFIG_NO_CHECKS
    item->pair_size = 3;

    if ( item->flags & PFR_KERN_2BYTE_CHAR )
      item->pair_size += 2;

    if ( item->flags & PFR_KERN_2BYTE_ADJ )
      item->pair_size += 1;

    PFR_CHECK( item->pair_count * item->pair_size );
#endif

    /* load first and last pairs into the item to speed up */
    /* lookup later...                                     */
    if ( item->pair_count > 0 )
    {
      FT_UInt   char1, char2;
      FT_Byte*  q;


      if ( item->flags & PFR_KERN_2BYTE_CHAR )
      {
        q     = p;
        char1 = PFR_NEXT_USHORT( q );
        char2 = PFR_NEXT_USHORT( q );

        item->pair1 = PFR_KERN_INDEX( char1, char2 );

        q = p + item->pair_size * ( item->pair_count - 1 );
        char1 = PFR_NEXT_USHORT( q );
        char2 = PFR_NEXT_USHORT( q );

        item->pair2 = PFR_KERN_INDEX( char1, char2 );
      }
      else
      {
        q     = p;
        char1 = PFR_NEXT_BYTE( q );
        char2 = PFR_NEXT_BYTE( q );

        item->pair1 = PFR_KERN_INDEX( char1, char2 );

        q = p + item->pair_size * ( item->pair_count - 1 );
        char1 = PFR_NEXT_BYTE( q );
        char2 = PFR_NEXT_BYTE( q );

        item->pair2 = PFR_KERN_INDEX( char1, char2 );
      }

      /* add new item to the current list */
      item->next                 = NULL;
      *phy_font->kern_items_tail = item;
      phy_font->kern_items_tail  = &item->next;
      phy_font->num_kern_pairs  += item->pair_count;
    }
    else
    {
      /* empty item! */
      FT_FREE( item );
    }

  Exit:
    return error;

  Too_Short:
    FT_FREE( item );

    error = PFR_Err_Invalid_Table;
    FT_ERROR(( "pfr_extra_item_load_kerning_pairs:"
               " invalid kerning pairs table\n" ));
    goto Exit;
  }
Esempio n. 25
0
File: t1parse.c Progetto: 8l/inferno
  T1_Get_Private_Dict( T1_Parser      parser,
                       PSAux_Service  psaux )
  {
    FT_Stream  stream = parser->stream;
    FT_Memory  memory = parser->root.memory;
    FT_Error   error  = 0;
    FT_Long    size;


    if ( parser->in_pfb )
    {
      /* in the case of the PFB format, the private dictionary can be  */
      /* made of several segments.  We thus first read the number of   */
      /* segments to compute the total size of the private dictionary  */
      /* then re-read them into memory.                                */
      FT_Long    start_pos = FT_STREAM_POS();
      FT_UShort  tag;


      parser->private_len = 0;
      for (;;)
      {
        error = read_pfb_tag( stream, &tag, &size );
        if ( error )
          goto Fail;

        if ( tag != 0x8002U )
          break;

        parser->private_len += size;

        if ( FT_STREAM_SKIP( size ) )
          goto Fail;
      }

      /* Check that we have a private dictionary there */
      /* and allocate private dictionary buffer        */
      if ( parser->private_len == 0 )
      {
        FT_ERROR(( "T1_Get_Private_Dict:" ));
        FT_ERROR(( " invalid private dictionary section\n" ));
        error = T1_Err_Invalid_File_Format;
        goto Fail;
      }

      if ( FT_STREAM_SEEK( start_pos )                             ||
           FT_ALLOC( parser->private_dict, parser->private_len ) )
        goto Fail;

      parser->private_len = 0;
      for (;;)
      {
        error = read_pfb_tag( stream, &tag, &size );
        if ( error || tag != 0x8002U )
        {
          error = T1_Err_Ok;
          break;
        }

        if ( FT_STREAM_READ( parser->private_dict + parser->private_len, size ) )
          goto Fail;

        parser->private_len += size;
      }
    }
    else
    {
      /* we have already `loaded' the whole PFA font file into memory; */
      /* if this is a memory resource, allocate a new block to hold    */
      /* the private dict. Otherwise, simply overwrite into the base   */
      /* dictionary block in the heap.                                 */

      /* first of all, look at the `eexec' keyword */
      FT_Byte*  cur   = parser->base_dict;
      FT_Byte*  limit = cur + parser->base_len;
      FT_Byte   c;


      for (;;)
      {
        c = cur[0];
        if ( c == 'e' && cur + 9 < limit )  /* 9 = 5 letters for `eexec' + */
                                            /* newline + 4 chars           */
        {
          if ( cur[1] == 'e' && cur[2] == 'x' &&
               cur[3] == 'e' && cur[4] == 'c' )
          {
            cur += 6; /* we skip the newling after the `eexec' */

            /* XXX: Some fonts use DOS-linefeeds, i.e. \r\n; we need to */
            /*      skip the extra \n if we find it                     */
            if ( cur[0] == '\n' )
              cur++;

            break;
          }
        }
        cur++;
        if ( cur >= limit )
        {
          FT_ERROR(( "T1_Get_Private_Dict:" ));
          FT_ERROR(( " could not find `eexec' keyword\n" ));
          error = T1_Err_Invalid_File_Format;
          goto Exit;
        }
      }

      /* now determine where to write the _encrypted_ binary private  */
      /* dictionary.  We overwrite the base dictionary for disk-based */
      /* resources and allocate a new block otherwise                 */

      size = (FT_Long)( parser->base_len - ( cur - parser->base_dict ) );

      if ( parser->in_memory )
      {
        /* note that we allocate one more byte to put a terminating `0' */
        if ( FT_ALLOC( parser->private_dict, size + 1 ) )
          goto Fail;
        parser->private_len = size;
      }
      else
      {
        parser->single_block = 1;
        parser->private_dict = parser->base_dict;
        parser->private_len  = size;
        parser->base_dict    = 0;
        parser->base_len     = 0;
      }

      /* now determine whether the private dictionary is encoded in binary */
      /* or hexadecimal ASCII format -- decode it accordingly              */

      /* we need to access the next 4 bytes (after the final \r following */
      /* the `eexec' keyword); if they all are hexadecimal digits, then   */
      /* we have a case of ASCII storage                                  */

      if ( ( hexa_value( cur[0] ) | hexa_value( cur[1] ) |
             hexa_value( cur[2] ) | hexa_value( cur[3] ) ) < 0 )

        /* binary encoding -- `simply' copy the private dict */
        FT_MEM_COPY( parser->private_dict, cur, size );

      else
      {
        /* ASCII hexadecimal encoding */

        FT_Byte*  write;
        FT_Int    count;


        write = parser->private_dict;
        count = 0;

        for ( ;cur < limit; cur++ )
        {
          int  hex1;


          /* check for newline */
          if ( cur[0] == '\r' || cur[0] == '\n' )
            continue;

          /* exit if we have a non-hexadecimal digit that isn't a newline */
          hex1 = hexa_value( cur[0] );
          if ( hex1 < 0 || cur + 1 >= limit )
            break;

          /* otherwise, store byte */
          *write++ = (FT_Byte)( ( hex1 << 4 ) | hexa_value( cur[1] ) );
          count++;
          cur++;
        }

        /* put a safeguard */
        parser->private_len = write - parser->private_dict;
        *write++ = 0;
      }
    }

    /* we now decrypt the encoded binary private dictionary */
    psaux->t1_decrypt( parser->private_dict, parser->private_len, 55665U );
    parser->root.base   = parser->private_dict;
    parser->root.cursor = parser->private_dict;
    parser->root.limit  = parser->root.cursor + parser->private_len;

  Fail:
  Exit:
    return error;
  }
Esempio n. 26
0
  pfr_phy_font_load( PFR_PhyFont  phy_font,
                     FT_Stream    stream,
                     FT_UInt32    offset,
                     FT_UInt32    size )
  {
    FT_Error   error;
    FT_Memory  memory = stream->memory;
    FT_UInt    flags;
    FT_ULong   num_aux;
    FT_Byte*   p;
    FT_Byte*   limit;


    phy_font->memory = memory;
    phy_font->offset = offset;

    phy_font->kern_items      = NULL;
    phy_font->kern_items_tail = &phy_font->kern_items;

    if ( FT_STREAM_SEEK( offset ) || FT_FRAME_ENTER( size ) )
      goto Exit;

    phy_font->cursor = stream->cursor;

    p     = stream->cursor;
    limit = p + size;

    PFR_CHECK( 15 );
    phy_font->font_ref_number    = PFR_NEXT_USHORT( p );
    phy_font->outline_resolution = PFR_NEXT_USHORT( p );
    phy_font->metrics_resolution = PFR_NEXT_USHORT( p );
    phy_font->bbox.xMin          = PFR_NEXT_SHORT( p );
    phy_font->bbox.yMin          = PFR_NEXT_SHORT( p );
    phy_font->bbox.xMax          = PFR_NEXT_SHORT( p );
    phy_font->bbox.yMax          = PFR_NEXT_SHORT( p );
    phy_font->flags      = flags = PFR_NEXT_BYTE( p );

    /* get the standard advance for non-proportional fonts */
    if ( !(flags & PFR_PHY_PROPORTIONAL) )
    {
      PFR_CHECK( 2 );
      phy_font->standard_advance = PFR_NEXT_SHORT( p );
    }

    /* load the extra items when present */
    if ( flags & PFR_PHY_EXTRA_ITEMS )
    {
      error =  pfr_extra_items_parse( &p, limit,
                                      pfr_phy_font_extra_items, phy_font );

      if ( error )
        goto Fail;
    }

    /* In certain fonts, the auxiliary bytes contain interesting  */
    /* information. These are not in the specification but can be */
    /* guessed by looking at the content of a few PFR0 fonts.     */
    PFR_CHECK( 3 );
    num_aux = PFR_NEXT_ULONG( p );

    if ( num_aux > 0 )
    {
      FT_Byte*  q = p;
      FT_Byte*  q2;


      PFR_CHECK( num_aux );
      p += num_aux;

      while ( num_aux > 0 )
      {
        FT_UInt  length, type;


        if ( q + 4 > p )
          break;

        length = PFR_NEXT_USHORT( q );
        if ( length < 4 || length > num_aux )
          break;

        q2   = q + length - 2;
        type = PFR_NEXT_USHORT( q );

        switch ( type )
        {
        case 1:
          /* this seems to correspond to the font's family name,
           * padded to 16-bits with one zero when necessary
           */
          error = pfr_aux_name_load( q, length - 4U, memory,
                                     &phy_font->family_name );
          if ( error )
            goto Exit;
          break;

        case 2:
          if ( q + 32 > q2 )
            break;

          q += 10;
          phy_font->ascent  = PFR_NEXT_SHORT( q );
          phy_font->descent = PFR_NEXT_SHORT( q );
          phy_font->leading = PFR_NEXT_SHORT( q );
          q += 16;
          break;

        case 3:
          /* this seems to correspond to the font's style name,
           * padded to 16-bits with one zero when necessary
           */
          error = pfr_aux_name_load( q, length - 4U, memory,
                                     &phy_font->style_name );
          if ( error )
            goto Exit;
          break;

        default:
          ;
        }

        q        = q2;
        num_aux -= length;
      }
    }

    /* read the blue values */
    {
      FT_UInt  n, count;


      PFR_CHECK( 1 );
      phy_font->num_blue_values = count = PFR_NEXT_BYTE( p );

      PFR_CHECK( count * 2 );

      if ( FT_NEW_ARRAY( phy_font->blue_values, count ) )
        goto Fail;

      for ( n = 0; n < count; n++ )
        phy_font->blue_values[n] = PFR_NEXT_SHORT( p );
    }

    PFR_CHECK( 8 );
    phy_font->blue_fuzz  = PFR_NEXT_BYTE( p );
    phy_font->blue_scale = PFR_NEXT_BYTE( p );

    phy_font->vertical.standard   = PFR_NEXT_USHORT( p );
    phy_font->horizontal.standard = PFR_NEXT_USHORT( p );

    /* read the character descriptors */
    {
      FT_UInt  n, count, Size;


      phy_font->num_chars    = count = PFR_NEXT_USHORT( p );
      phy_font->chars_offset = offset + ( p - stream->cursor );

      if ( FT_NEW_ARRAY( phy_font->chars, count ) )
        goto Fail;

      Size = 1 + 1 + 2;
      if ( flags & PFR_PHY_2BYTE_CHARCODE )
        Size += 1;

      if ( flags & PFR_PHY_PROPORTIONAL )
        Size += 2;

      if ( flags & PFR_PHY_ASCII_CODE )
        Size += 1;

      if ( flags & PFR_PHY_2BYTE_GPS_SIZE )
        Size += 1;

      if ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
        Size += 1;

      PFR_CHECK( count * Size );

      for ( n = 0; n < count; n++ )
      {
        PFR_Char  cur = &phy_font->chars[n];


        cur->char_code = ( flags & PFR_PHY_2BYTE_CHARCODE )
                         ? PFR_NEXT_USHORT( p )
                         : PFR_NEXT_BYTE( p );

        cur->advance   = ( flags & PFR_PHY_PROPORTIONAL )
                         ? PFR_NEXT_SHORT( p )
                         : (FT_Int) phy_font->standard_advance;

#if 0
        cur->ascii     = ( flags & PFR_PHY_ASCII_CODE )
                         ? PFR_NEXT_BYTE( p )
                         : 0;
#else
        if ( flags & PFR_PHY_ASCII_CODE )
          p += 1;
#endif
        cur->gps_size  = ( flags & PFR_PHY_2BYTE_GPS_SIZE )
                         ? PFR_NEXT_USHORT( p )
                         : PFR_NEXT_BYTE( p );

        cur->gps_offset = ( flags & PFR_PHY_3BYTE_GPS_OFFSET )
                          ? PFR_NEXT_ULONG( p )
                          : PFR_NEXT_USHORT( p );
      }
    }

    /* that's it! */

  Fail:
    FT_FRAME_EXIT();

    /* save position of bitmap info */
    phy_font->bct_offset = FT_STREAM_POS();
    phy_font->cursor     = NULL;

  Exit:
    return error;

  Too_Short:
    error = PFR_Err_Invalid_Table;
    FT_ERROR(( "pfr_phy_font_load: invalid physical font table\n" ));
    goto Fail;
  }
Esempio n. 27
0
  sfnt_init_face( FT_Stream      stream,
                  TT_Face        face,
                  FT_Int         face_index,
                  FT_Int         num_params,
                  FT_Parameter*  params )
  {
    FT_Error        error;
    FT_Library      library = face->root.driver->root.library;
    SFNT_Service    sfnt;


    /* for now, parameters are unused */
    FT_UNUSED( num_params );
    FT_UNUSED( params );


    sfnt = (SFNT_Service)face->sfnt;
    if ( !sfnt )
    {
      sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
      if ( !sfnt )
      {
        FT_ERROR(( "sfnt_init_face: cannot access `sfnt' module\n" ));
        return FT_THROW( Missing_Module );
      }

      face->sfnt       = sfnt;
      face->goto_table = sfnt->goto_table;
    }

    FT_FACE_FIND_GLOBAL_SERVICE( face, face->psnames, POSTSCRIPT_CMAPS );

    FT_TRACE2(( "SFNT driver\n" ));

    error = sfnt_open_font( stream, face );
    if ( error )
      return error;

    /* Stream may have changed in sfnt_open_font. */
    stream = face->root.stream;

    FT_TRACE2(( "sfnt_init_face: %08p, %ld\n", face, face_index ));

    if ( face_index < 0 )
      face_index = 0;

    if ( face_index >= face->ttc_header.count )
      return FT_THROW( Invalid_Argument );

    if ( FT_STREAM_SEEK( face->ttc_header.offsets[face_index] ) )
      return error;

    /* check that we have a valid TrueType file */
    error = sfnt->load_font_dir( face, stream );
    if ( error )
      return error;

    face->root.num_faces  = face->ttc_header.count;
    face->root.face_index = face_index;

    return error;
  }
Esempio n. 28
0
  FT_Get_Glyph( FT_GlyphSlot  slot,
                FT_Glyph     *aglyph )
  {
    FT_Library  library;
    FT_Error    error;
    FT_Glyph    glyph;

    const FT_Glyph_Class*  clazz = NULL;


    if ( !slot )
      return FT_THROW( Invalid_Slot_Handle );

    library = slot->library;

    if ( !aglyph )
      return FT_THROW( Invalid_Argument );

    /* if it is a bitmap, that's easy :-) */
    if ( slot->format == FT_GLYPH_FORMAT_BITMAP )
      clazz = FT_BITMAP_GLYPH_CLASS_GET;

    /* if it is an outline */
    else if ( slot->format == FT_GLYPH_FORMAT_OUTLINE )
      clazz = FT_OUTLINE_GLYPH_CLASS_GET;

    else
    {
      /* try to find a renderer that supports the glyph image format */
      FT_Renderer  render = FT_Lookup_Renderer( library, slot->format, 0 );


      if ( render )
        clazz = &render->glyph_class;
    }

    if ( !clazz )
    {
      error = FT_THROW( Invalid_Glyph_Format );
      goto Exit;
    }

    /* create FT_Glyph object */
    error = ft_new_glyph( library, clazz, &glyph );
    if ( error )
      goto Exit;

    /* copy advance while converting 26.6 to 16.16 format */
    if ( slot->advance.x >=  0x8000L * 64 ||
         slot->advance.x <= -0x8000L * 64 )
    {
      FT_ERROR(( "FT_Get_Glyph: advance width too large\n" ));
      error = FT_THROW( Invalid_Argument );
      goto Exit2;
    }
    if ( slot->advance.y >=  0x8000L * 64 ||
         slot->advance.y <= -0x8000L * 64 )
    {
      FT_ERROR(( "FT_Get_Glyph: advance height too large\n" ));
      error = FT_THROW( Invalid_Argument );
      goto Exit2;
    }

    glyph->advance.x = slot->advance.x * 1024;
    glyph->advance.y = slot->advance.y * 1024;

    /* now import the image from the glyph slot */
    error = clazz->glyph_init( glyph, slot );

  Exit2:
    /* if an error occurred, destroy the glyph */
    if ( error )
      FT_Done_Glyph( glyph );
    else
      *aglyph = glyph;

  Exit:
    return error;
  }
Esempio n. 29
0
tt_face_load_name( TT_Face    face,
                   FT_Stream  stream )
{
    FT_Error      error;
    FT_Memory     memory = stream->memory;
    FT_ULong      table_pos, table_len;
    FT_ULong      storage_start, storage_limit;
    FT_UInt       count;
    TT_NameTable  table;

    static const FT_Frame_Field  name_table_fields[] =
    {
#undef  FT_STRUCTURE
#define FT_STRUCTURE  TT_NameTableRec

        FT_FRAME_START( 6 ),
        FT_FRAME_USHORT( format ),
        FT_FRAME_USHORT( numNameRecords ),
        FT_FRAME_USHORT( storageOffset ),
        FT_FRAME_END
    };

    static const FT_Frame_Field  name_record_fields[] =
    {
#undef  FT_STRUCTURE
#define FT_STRUCTURE  TT_NameEntryRec

        /* no FT_FRAME_START */
        FT_FRAME_USHORT( platformID ),
        FT_FRAME_USHORT( encodingID ),
        FT_FRAME_USHORT( languageID ),
        FT_FRAME_USHORT( nameID ),
        FT_FRAME_USHORT( stringLength ),
        FT_FRAME_USHORT( stringOffset ),
        FT_FRAME_END
    };


    table         = &face->name_table;
    table->stream = stream;

    error = face->goto_table( face, TTAG_name, stream, &table_len );
    if ( error )
        goto Exit;

    table_pos = FT_STREAM_POS();


    if ( FT_STREAM_READ_FIELDS( name_table_fields, table ) )
        goto Exit;

    /* Some popular Asian fonts have an invalid `storageOffset' value   */
    /* (it should be at least "6 + 12*num_names").  However, the string */
    /* offsets, computed as "storageOffset + entry->stringOffset", are  */
    /* valid pointers within the name table...                          */
    /*                                                                  */
    /* We thus can't check `storageOffset' right now.                   */
    /*                                                                  */
    storage_start = table_pos + 6 + 12*table->numNameRecords;
    storage_limit = table_pos + table_len;

    if ( storage_start > storage_limit )
    {
        FT_ERROR(( "tt_face_load_name: invalid `name' table\n" ));
        error = SFNT_Err_Name_Table_Missing;
        goto Exit;
    }

    /* Allocate the array of name records. */
    count                 = table->numNameRecords;
    table->numNameRecords = 0;

    if ( FT_NEW_ARRAY( table->names, count ) ||
            FT_FRAME_ENTER( count * 12 )        )
        goto Exit;

    /* Load the name records and determine how much storage is needed */
    /* to hold the strings themselves.                                */
    {
        TT_NameEntryRec*  entry = table->names;


        for ( ; count > 0; count-- )
        {
            if ( FT_STREAM_READ_FIELDS( name_record_fields, entry ) )
                continue;

            /* check that the name is not empty */
            if ( entry->stringLength == 0 )
                continue;

            /* check that the name string is within the table */
            entry->stringOffset += table_pos + table->storageOffset;
            if ( entry->stringOffset                       < storage_start ||
                    entry->stringOffset + entry->stringLength > storage_limit )
            {
                /* invalid entry - ignore it */
                entry->stringOffset = 0;
                entry->stringLength = 0;
                continue;
            }

            entry++;
        }

        table->numNameRecords = (FT_UInt)( entry - table->names );
    }

    FT_FRAME_EXIT();

    /* everything went well, update face->num_names */
    face->num_names = (FT_UShort) table->numNameRecords;

Exit:
    return error;
}
Esempio n. 30
0
  static FT_Error
  pcf_get_bitmaps( FT_Stream  stream,
                   PCF_Face   face )
  {
    FT_Error   error  = PCF_Err_Ok;
    FT_Memory  memory = FT_FACE(face)->memory;
    FT_Long*   offsets;
    FT_Long    bitmapSizes[GLYPHPADOPTIONS];
    FT_ULong   format, size;
    int        nbitmaps, i, sizebitmaps = 0;


    error = pcf_seek_to_table_type( stream,
                                    face->toc.tables,
                                    face->toc.count,
                                    PCF_BITMAPS,
                                    &format,
                                    &size );
    if ( error )
      return error;

    error = FT_Stream_EnterFrame( stream, 8 );
    if ( error )
      return error;

    format = FT_GET_ULONG_LE();
    if ( PCF_BYTE_ORDER( format ) == MSBFirst )
      nbitmaps  = FT_GET_ULONG();
    else
      nbitmaps  = FT_GET_ULONG_LE();

    FT_Stream_ExitFrame( stream );

    if ( !PCF_FORMAT_MATCH( format, PCF_DEFAULT_FORMAT ) )
      return PCF_Err_Invalid_File_Format;

    FT_TRACE4(( "pcf_get_bitmaps:\n" ));

    FT_TRACE4(( "  number of bitmaps: %d\n", nbitmaps ));

    if ( nbitmaps != face->nmetrics )
      return PCF_Err_Invalid_File_Format;

    if ( FT_NEW_ARRAY( offsets, nbitmaps ) )
      return error;

    for ( i = 0; i < nbitmaps; i++ )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_LONG( offsets[i] );
      else
        (void)FT_READ_LONG_LE( offsets[i] );

      FT_TRACE5(( "  bitmap %d: offset %ld (0x%lX)\n",
                  i, offsets[i], offsets[i] ));
    }
    if ( error )
      goto Bail;

    for ( i = 0; i < GLYPHPADOPTIONS; i++ )
    {
      if ( PCF_BYTE_ORDER( format ) == MSBFirst )
        (void)FT_READ_LONG( bitmapSizes[i] );
      else
        (void)FT_READ_LONG_LE( bitmapSizes[i] );
      if ( error )
        goto Bail;

      sizebitmaps = bitmapSizes[PCF_GLYPH_PAD_INDEX( format )];

      FT_TRACE4(( "  padding %d implies a size of %ld\n", i, bitmapSizes[i] ));
    }

    FT_TRACE4(( "  %d bitmaps, padding index %ld\n",
                nbitmaps,
                PCF_GLYPH_PAD_INDEX( format ) ));
    FT_TRACE4(( "  bitmap size = %d\n", sizebitmaps ));

    FT_UNUSED( sizebitmaps );       /* only used for debugging */

    for ( i = 0; i < nbitmaps; i++ )
    {
      /* rough estimate */
      if ( ( offsets[i] < 0 )              ||
           ( (FT_ULong)offsets[i] > size ) )
      {
        FT_ERROR(( "pcf_get_bitmaps:"));
        FT_ERROR(( " invalid offset to bitmap data of glyph %d\n", i ));
      }
      else
        face->metrics[i].bits = stream->pos + offsets[i];
    }

    face->bitmapsFormat = format;

  Bail:
    FT_FREE( offsets );
    return error;
  }