VFS

Section: User Contributed Perl Documentation (3pm)
Updated: 2008-02-24
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NAME

Gnome2::VFS - Perl interface to the 2.x series of the GNOME VFS library

SYNOPSIS

  use Gnome2::VFS;

  sub die_already {
    my ($action) = @_;
    die("An error occured while $action.\n");
  }

  die_already("initializing GNOME VFS") unless (Gnome2::VFS -> init());

  my $source = "http://www.perldoc.com/about.html";
  my ($result, $handle, $info);

  # Open a connection to Perldoc.
  ($result, $handle) = Gnome2::VFS -> open($source, "read");
  die_already("opening connection to '$source'")
    unless ($result eq "ok");

  # Get the file information.
  ($result, $info) = $handle -> get_file_info("default");
  die_already("retrieving information about '$source'")
    unless ($result eq "ok");

  # Read the content.
  my $bytes = $info -> { size };

  my $bytes_read = 0;
  my $buffer = "";

  do {
    my ($tmp_buffer, $tmp_bytes_read);

    ($result, $tmp_bytes_read, $tmp_buffer) =
      $handle -> read($bytes - $bytes_read);

    $buffer .= $tmp_buffer;
    $bytes_read += $tmp_bytes_read;
  } while ($result eq "ok" and $bytes_read < $bytes);

  die_already("reading $bytes bytes from '$source'")
    unless ($result eq "ok" && $bytes_read == $bytes);

  # Close the connection.
  $result = $handle -> close();
  die_already("closing connection to '$source'")
    unless ($result eq "ok");

  # Create and open the target.
  my $target = "/tmp/" . $info -> { name };
  my $uri = Gnome2::VFS::URI -> new($target);

  ($result, $handle) = $uri -> create("write", 1, 0644);
  die_already("creating '$target'") unless ($result eq "ok");

  # Write to it.
  my $bytes_written;

  ($result, $bytes_written) = $handle -> write($buffer, $bytes);
  die_already("writing $bytes bytes to '$target'")
    unless ($result eq "ok" && $bytes_written == $bytes);

  # Close the target.
  $result = $handle -> close();
  die_already("closing '$target'") unless ($result eq "ok");

  Gnome2::VFS -> shutdown();

ABSTRACT

This module allows you to interface with the GNOME Virtual File System library. It provides the means to transparently access files on all kinds of filesystems.

DESCRIPTION

Since this module tries to stick very closely to the C API, the documentation found at

  L<http://developer.gnome.org/doc/API/2.0/gnome-vfs-2.0/>

is the canonical reference.

In addition to that, there's also the automatically generated API documentation: Gnome2::VFS::index.

The mapping described in Gtk2::api also applies to this module.

To discuss this module, ask questions and flame/praise the authors, join gtk-perl-list@gnome.org at lists.gnome.org.

KNOWN BUGS

There are some memory leaks especially with respect to callbacks. This mainly affects GnomeVFSAsync as well as some parts of GnomeVFSXfer and GnomeVFSOps. GnomeVFSMime leaks some list data.

GnomeVFSAsync is also known to crash under certain conditions when there are many concurrent transfers.

AUTHOR

Torsten Schoenfeld <kaffeetisch@web.de>.

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

This document was created by man2html, using the manual pages.
Time: 19:49:22 GMT, April 27, 2011

VFS