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package File::Path;
=head1 NAME
File::Path - create or remove a series of directories
=head1 SYNOPSIS
C<use File::Path>
C<mkpath(['/foo/bar/baz', 'blurfl/quux'], 1, 0711);>
C<rmtree(['foo/bar/baz', 'blurfl/quux'], 1, 1);>
=head1 DESCRIPTION
The C<mkpath> function provides a convenient way to create directories, even
if your C<mkdir> kernel call won't create more than one level of directory at
a time. C<mkpath> takes three arguments:
=over 4
=item *
the name of the path to create, or a reference
to a list of paths to create,
=item *
a boolean value, which if TRUE will cause C<mkpath>
to print the name of each directory as it is created
(defaults to FALSE), and
=item *
the numeric mode to use when creating the directories
(defaults to 0777)
=back
It returns a list of all directories (including intermediates, determined
using the Unix '/' separator) created.
Similarly, the C<rmtree> function provides a convenient way to delete a
subtree from the directory structure, much like the Unix command C<rm -r>.
C<rmtree> takes three arguments:
=over 4
=item *
the root of the subtree to delete, or a reference to
a list of roots. All of the files and directories
below each root, as well as the roots themselves,
will be deleted.
=item *
a boolean value, which if TRUE will cause C<rmtree> to
print a message each time it examines a file, giving the
name of the file, and indicating whether it's using C<rmdir>
or C<unlink> to remove it, or that it's skipping it.
(defaults to FALSE)
=item *
a boolean value, which if TRUE will cause C<rmtree> to
skip any files to which you do not have delete access
(if running under VMS) or write access (if running
under another OS). This will change in the future when
a criterion for 'delete permission' under OSs other
than VMS is settled. (defaults to FALSE)
=back
It returns the number of files successfully deleted. Symlinks are
treated as ordinary files.
=head1 AUTHORS
Tim Bunce E<lt>F<Tim.Bunce@ig.co.uk>E<gt>
Charles Bailey E<lt>F<bailey@genetics.upenn.edu>E<gt>
=head1 REVISION
Current $VERSION is 1.02.
=cut
use Carp;
use File::Basename ();
use DirHandle ();
use Exporter ();
use strict;
use vars qw( $VERSION @ISA @EXPORT );
$VERSION = "1.02";
@ISA = qw( Exporter );
@EXPORT = qw( mkpath rmtree );
my $Is_VMS = $^O eq 'VMS';
# These OSes complain if you want to remove a file that you have no
# write permission to:
my $force_writeable = ($^O eq 'os2' || $^O eq 'msdos' || $^O eq 'MSWin32'
|| $^O eq 'amigaos');
sub mkpath {
my($paths, $verbose, $mode) = @_;
# $paths -- either a path string or ref to list of paths
# $verbose -- optional print "mkdir $path" for each directory created
# $mode -- optional permissions, defaults to 0777
local($")="/";
$mode = 0777 unless defined($mode);
$paths = [$paths] unless ref $paths;
my(@created,$path);
foreach $path (@$paths) {
next if -d $path;
# Logic wants Unix paths, so go with the flow.
$path = VMS::Filespec::unixify($path) if $Is_VMS;
my $parent = File::Basename::dirname($path);
push(@created,mkpath($parent, $verbose, $mode)) unless (-d $parent);
print "mkdir $path\n" if $verbose;
mkdir($path,$mode) || croak "mkdir $path: $!";
push(@created, $path);
}
@created;
}
sub rmtree {
my($roots, $verbose, $safe) = @_;
my(@files);
my($count) = 0;
$roots = [$roots] unless ref $roots;
$verbose ||= 0;
$safe ||= 0;
my($root);
foreach $root (@{$roots}) {
$root =~ s#/$##;
$count++, next unless -e $root;
if (not -l $root and -d _) {
# notabene: 0777 is for making readable in the first place,
# it's also intended to change it to writable in case we have
# to recurse in which case we are better than rm -rf for
# subtrees with strange permissions
chmod 0777, $root
or carp "Can't make directory $root read+writeable: $!"
unless $safe;
my $d = DirHandle->new($root)
or carp "Can't read $root: $!";
@files = $d->read;
$d->close;
# Deleting large numbers of files from VMS Files-11 filesystems
# is faster if done in reverse ASCIIbetical order
@files = reverse @files if $Is_VMS;
($root = VMS::Filespec::unixify($root)) =~ s#\.dir$## if $Is_VMS;
@files = map("$root/$_", grep $_!~/^\.{1,2}$/,@files);
$count += rmtree(\@files,$verbose,$safe);
if ($safe &&
($Is_VMS ? !&VMS::Filespec::candelete($root) : !-w $root)) {
print "skipped $root\n" if $verbose;
next;
}
chmod 0777, $root
or carp "Can't make directory $root writeable: $!"
if $force_writeable;
print "rmdir $root\n" if $verbose;
rmdir($root) && ++$count
or carp "Can't remove directory $root: $!";
}
else {
if ($safe &&
($Is_VMS ? !&VMS::Filespec::candelete($root) : !-w $root)) {
print "skipped $root\n" if $verbose;
next;
}
chmod 0666, $root
or carp "Can't make file $root writeable: $!"
if $force_writeable;
print "unlink $root\n" if $verbose;
# delete all versions under VMS
while (-e $root || -l $root) {
unlink($root) && ++$count
or croak "Can't unlink file $root: $!";
}
}
}
$count;
}
1;
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