Eric Wilhelm > CAD-Drawing > CAD::Drawing::IO::Split



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CAD::Drawing::IO::Split - Fast distributed text file methods.


Eric L. Wilhelm <ewilhelm at cpan dot org>


This module is copyright (C) 2004-2006 by Eric L. Wilhelm. Portions copyright (C) 2003 by Eric L. Wilhelm and A. Zahner Co.


This module is distributed under the same terms as Perl. See the Perl source package for details.

You may use this software under one of the following licenses:

  (1) GNU General Public License
    (found at
  (2) Artistic License
    (found at


This software is distributed with ABSOLUTELY NO WARRANTY. The author, his former employer, and any other contributors will in no way be held liable for any loss or damages resulting from its use.

Modifications ^

The source code of this module is made freely available and distributable under the GPL or Artistic License. Modifications to and use of this software must adhere to one of these licenses. Changes to the code should be noted as such and this notification (as well as the above copyright information) must remain intact on all copies of the code.

Additionally, while the author is actively developing this code, notification of any intended changes or extensions would be most helpful in avoiding repeated work for all parties involved. Please contact the author with any such development plans.



Requisite Plug-in Functions ^

See CAD::Drawing::IO for a description of the plug-in architecture.


Returns true if $type is "split" or $filename is a directory (need a tag?)

  $fact = check_type($filename, $type);

Load/Save Methods ^

Concept here is to strip data down to the absolute bare minumum in an effort to find a generic and extensible incarnation of same.


Saves data into $toplevel_directory under a directory for each layer, each type, and a file for each id.

  save($drw, $toplevel_directory, \%options);

Requires that the directory already exists.

Selective saves not yet supported.

Unfortunately, the file-formats are rather primitive and the code needs refactoring. These are nowhere near stable, so don't expect version compatibility yet!

Needs a clear_all_like => $regex option.


  load($drw, $toplevel_directory, \%options);

%options may include selective-load arguments

Naming Functions ^


  @list = _dir_list($dir);


Creates nested directories which are required to save %obj and returns the filename which should be saved into.

  _sp_filename(\%obj, \%data);

Inherited Methods ^


Removes layers (and items) from the split directory $dir.

Defaults to removing all.

  $drw->clear_dir($dir, \%options);
Available options:
  like    => qr/regex/,  # if regex matches layer name
  not_like => qr/regex/,  # negative of above (compounded)
check_select() options:

%options is passed through CAD::Drawing::Defined::check_select(), so the selections returned by it will be utilized here.

  select_layers => \@layer_list,
  select_types => \@types_list,

Returns the number of items removed or undef() if $dir does not exist.

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