This file is indexed.

/usr/share/perl5/File/pushd.pm is in libfile-pushd-perl 1.009-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
use strict;
use warnings;

package File::pushd;
# ABSTRACT: change directory temporarily for a limited scope
our $VERSION = '1.009'; # VERSION

our @EXPORT = qw( pushd tempd );
our @ISA    = qw( Exporter );

use Exporter;
use Carp;
use Cwd qw( getcwd abs_path );
use File::Path qw( rmtree );
use File::Temp qw();
use File::Spec;

use overload
  q{""}    => sub { File::Spec->canonpath( $_[0]->{_pushd} ) },
  fallback => 1;

#--------------------------------------------------------------------------#
# pushd()
#--------------------------------------------------------------------------#

sub pushd {
    my ( $target_dir, $options ) = @_;
    $options->{untaint_pattern} ||= qr{^([-+@\w./]+)$};

    $target_dir = "." unless defined $target_dir;
    croak "Can't locate directory $target_dir" unless -d $target_dir;

    my $tainted_orig = getcwd;
    my $orig;
    if ( $tainted_orig =~ $options->{untaint_pattern} ) {
        $orig = $1;
    }
    else {
        $orig = $tainted_orig;
    }

    my $tainted_dest;
    eval { $tainted_dest = $target_dir ? abs_path($target_dir) : $orig };
    croak "Can't locate absolute path for $target_dir: $@" if $@;

    my $dest;
    if ( $tainted_dest =~ $options->{untaint_pattern} ) {
        $dest = $1;
    }
    else {
        $dest = $tainted_dest;
    }

    if ( $dest ne $orig ) {
        chdir $dest or croak "Can't chdir to $dest\: $!";
    }

    my $self = bless {
        _pushd    => $dest,
        _original => $orig
      },
      __PACKAGE__;

    return $self;
}

#--------------------------------------------------------------------------#
# tempd()
#--------------------------------------------------------------------------#

sub tempd {
    my ($options) = @_;
    my $dir;
    eval { $dir = pushd( File::Temp::tempdir( CLEANUP => 0 ), $options ) };
    croak $@ if $@;
    $dir->{_tempd} = 1;
    return $dir;
}

#--------------------------------------------------------------------------#
# preserve()
#--------------------------------------------------------------------------#

sub preserve {
    my $self = shift;
    return 1 if !$self->{"_tempd"};
    if ( @_ == 0 ) {
        return $self->{_preserve} = 1;
    }
    else {
        return $self->{_preserve} = $_[0] ? 1 : 0;
    }
}

#--------------------------------------------------------------------------#
# DESTROY()
# Revert to original directory as object is destroyed and cleanup
# if necessary
#--------------------------------------------------------------------------#

sub DESTROY {
    my ($self) = @_;
    my $orig = $self->{_original};
    chdir $orig if $orig; # should always be so, but just in case...
    if ( $self->{_tempd}
        && !$self->{_preserve} )
    {
        # don't destroy existing $@ if there is no error.
        my $err = do {
            local $@;
            eval { rmtree( $self->{_pushd} ) };
            $@;
        };
        carp $err if $err;
    }
}

1;

=pod

=encoding UTF-8

=head1 NAME

File::pushd - change directory temporarily for a limited scope

=head1 VERSION

version 1.009

=head1 SYNOPSIS

 use File::pushd;

 chdir $ENV{HOME};

 # change directory again for a limited scope
 {
     my $dir = pushd( '/tmp' );
     # working directory changed to /tmp
 }
 # working directory has reverted to $ENV{HOME}

 # tempd() is equivalent to pushd( File::Temp::tempdir )
 {
     my $dir = tempd();
 }

 # object stringifies naturally as an absolute path
 {
    my $dir = pushd( '/tmp' );
    my $filename = File::Spec->catfile( $dir, "somefile.txt" );
    # gives /tmp/somefile.txt
 }

=head1 DESCRIPTION

File::pushd does a temporary C<chdir> that is easily and automatically
reverted, similar to C<pushd> in some Unix command shells.  It works by
creating an object that caches the original working directory.  When the object
is destroyed, the destructor calls C<chdir> to revert to the original working
directory.  By storing the object in a lexical variable with a limited scope,
this happens automatically at the end of the scope.

This is very handy when working with temporary directories for tasks like
testing; a function is provided to streamline getting a temporary
directory from L<File::Temp>.

For convenience, the object stringifies as the canonical form of the absolute
pathname of the directory entered.

B<Warning>: if you create multiple C<pushd> objects in the same lexical scope,
their destruction order is not guaranteed and you might not wind up in the
directory you expect.

=head1 USAGE

 use File::pushd;

Using File::pushd automatically imports the C<pushd> and C<tempd> functions.

=head2 pushd

 {
     my $dir = pushd( $target_directory );
 }

Caches the current working directory, calls C<chdir> to change to the target
directory, and returns a File::pushd object.  When the object is
destroyed, the working directory reverts to the original directory.

The provided target directory can be a relative or absolute path. If
called with no arguments, it uses the current directory as its target and
returns to the current directory when the object is destroyed.

If the target directory does not exist or if the directory change fails
for some reason, C<pushd> will die with an error message.

Can be given a hashref as an optional second argument.  The only supported
option is C<untaint_pattern>, which is used to untaint file paths involved.
It defaults to {qr{^(L<-+@\w./>+)$}}, which is reasonably restrictive (e.g.
it does not even allow spaces in the path).  Change this to suit your
circumstances and security needs if running under taint mode. *Note*: you
must include the parentheses in the pattern to capture the untainted
portion of the path.

=head2 tempd

 {
     my $dir = tempd();
 }

This function is like C<pushd> but automatically creates and calls C<chdir> to
a temporary directory created by L<File::Temp>. Unlike normal L<File::Temp>
cleanup which happens at the end of the program, this temporary directory is
removed when the object is destroyed. (But also see C<preserve>.)  A warning
will be issued if the directory cannot be removed.

As with C<pushd>, C<tempd> will die if C<chdir> fails.

It may be given a single options hash that will be passed internally
to C<pushd>.

=head2 preserve

 {
     my $dir = tempd();
     $dir->preserve;      # mark to preserve at end of scope
     $dir->preserve(0);   # mark to delete at end of scope
 }

Controls whether a temporary directory will be cleaned up when the object is
destroyed.  With no arguments, C<preserve> sets the directory to be preserved.
With an argument, the directory will be preserved if the argument is true, or
marked for cleanup if the argument is false.  Only C<tempd> objects may be
marked for cleanup.  (Target directories to C<pushd> are always preserved.)
C<preserve> returns true if the directory will be preserved, and false
otherwise.

=head1 SEE ALSO

=over 4

=item *

L<File::chdir>

=back

=for :stopwords cpan testmatrix url annocpan anno bugtracker rt cpants kwalitee diff irc mailto metadata placeholders metacpan

=head1 SUPPORT

=head2 Bugs / Feature Requests

Please report any bugs or feature requests through the issue tracker
at L<https://github.com/dagolden/File-pushd/issues>.
You will be notified automatically of any progress on your issue.

=head2 Source Code

This is open source software.  The code repository is available for
public review and contribution under the terms of the license.

L<https://github.com/dagolden/File-pushd>

  git clone https://github.com/dagolden/File-pushd.git

=head1 AUTHOR

David Golden <dagolden@cpan.org>

=head1 CONTRIBUTORS

=over 4

=item *

Diab Jerius <djerius@cfa.harvard.edu>

=item *

Graham Ollis <plicease@cpan.org>

=back

=head1 COPYRIGHT AND LICENSE

This software is Copyright (c) 2014 by David A Golden.

This is free software, licensed under:

  The Apache License, Version 2.0, January 2004

=cut

__END__


# vim: ts=4 sts=4 sw=4 et: