Commit | Line | Data |
1fc4cb55 |
1 | package File::Path; |
fed7345c |
2 | |
3 | =head1 NAME |
4 | |
1fc4cb55 |
5 | File::Path - create or remove a series of directories |
fed7345c |
6 | |
7 | =head1 SYNOPSIS |
8 | |
1fc4cb55 |
9 | C<use File::Path> |
fed7345c |
10 | |
11 | C<mkpath(['/foo/bar/baz', 'blurfl/quux'], 1, 0711);> |
12 | |
13 | C<rmtree(['foo/bar/baz', 'blurfl/quux'], 1, 1);> |
14 | |
15 | =head1 DESCRIPTION |
16 | |
037c8c09 |
17 | The C<mkpath> function provides a convenient way to create directories, even |
18 | if your C<mkdir> kernel call won't create more than one level of directory at |
19 | a time. C<mkpath> takes three arguments: |
fed7345c |
20 | |
21 | =over 4 |
22 | |
23 | =item * |
24 | |
25 | the name of the path to create, or a reference |
26 | to a list of paths to create, |
27 | |
28 | =item * |
29 | |
30 | a boolean value, which if TRUE will cause C<mkpath> |
31 | to print the name of each directory as it is created |
32 | (defaults to FALSE), and |
33 | |
34 | =item * |
35 | |
36 | the numeric mode to use when creating the directories |
37 | (defaults to 0777) |
38 | |
39 | =back |
40 | |
037c8c09 |
41 | It returns a list of all directories (including intermediates, determined |
42 | using the Unix '/' separator) created. |
fed7345c |
43 | |
44 | Similarly, the C<rmtree> function provides a convenient way to delete a |
45 | subtree from the directory structure, much like the Unix command C<rm -r>. |
46 | C<rmtree> takes three arguments: |
47 | |
48 | =over 4 |
49 | |
50 | =item * |
51 | |
52 | the root of the subtree to delete, or a reference to |
53 | a list of roots. All of the files and directories |
54 | below each root, as well as the roots themselves, |
567d72c2 |
55 | will be deleted. |
fed7345c |
56 | |
57 | =item * |
58 | |
59 | a boolean value, which if TRUE will cause C<rmtree> to |
748a9306 |
60 | print a message each time it examines a file, giving the |
61 | name of the file, and indicating whether it's using C<rmdir> |
62 | or C<unlink> to remove it, or that it's skipping it. |
fed7345c |
63 | (defaults to FALSE) |
64 | |
65 | =item * |
66 | |
67 | a boolean value, which if TRUE will cause C<rmtree> to |
748a9306 |
68 | skip any files to which you do not have delete access |
69 | (if running under VMS) or write access (if running |
70 | under another OS). This will change in the future when |
71 | a criterion for 'delete permission' under OSs other |
96e4d5b1 |
72 | than VMS is settled. (defaults to FALSE) |
fed7345c |
73 | |
74 | =back |
75 | |
96e4d5b1 |
76 | It returns the number of files successfully deleted. Symlinks are |
a5f75d66 |
77 | treated as ordinary files. |
fed7345c |
78 | |
96e4d5b1 |
79 | B<NOTE:> If the third parameter is not TRUE, C<rmtree> is B<unsecure> |
80 | in the face of failure or interruption. Files and directories which |
81 | were not deleted may be left with permissions reset to allow world |
82 | read and write access. Note also that the occurrence of errors in |
83 | rmtree can be determined I<only> by trapping diagnostic messages |
84 | using C<$SIG{__WARN__}>; it is not apparent from the return value. |
85 | Therefore, you must be extremely careful about using C<rmtree($foo,$bar,0> |
86 | in situations where security is an issue. |
87 | |
fed7345c |
88 | =head1 AUTHORS |
89 | |
96e4d5b1 |
90 | Tim Bunce <F<Tim.Bunce@ig.co.uk>> and |
bd3fa61c |
91 | Charles Bailey <F<bailey@newman.upenn.edu>> |
fed7345c |
92 | |
fed7345c |
93 | =cut |
94 | |
fed7345c |
95 | use Carp; |
037c8c09 |
96 | use File::Basename (); |
97 | use DirHandle (); |
98 | use Exporter (); |
99 | use strict; |
68dc0745 |
100 | |
101 | use vars qw( $VERSION @ISA @EXPORT ); |
53667d02 |
102 | $VERSION = "1.0402"; |
fed7345c |
103 | @ISA = qw( Exporter ); |
104 | @EXPORT = qw( mkpath rmtree ); |
105 | |
68dc0745 |
106 | my $Is_VMS = $^O eq 'VMS'; |
037c8c09 |
107 | |
108 | # These OSes complain if you want to remove a file that you have no |
109 | # write permission to: |
39e571d4 |
110 | my $force_writeable = ($^O eq 'os2' || $^O eq 'dos' || $^O eq 'MSWin32' |
68dc0745 |
111 | || $^O eq 'amigaos'); |
748a9306 |
112 | |
a5f75d66 |
113 | sub mkpath { |
fed7345c |
114 | my($paths, $verbose, $mode) = @_; |
115 | # $paths -- either a path string or ref to list of paths |
116 | # $verbose -- optional print "mkdir $path" for each directory created |
117 | # $mode -- optional permissions, defaults to 0777 |
118 | local($")="/"; |
119 | $mode = 0777 unless defined($mode); |
120 | $paths = [$paths] unless ref $paths; |
037c8c09 |
121 | my(@created,$path); |
68dc0745 |
122 | foreach $path (@$paths) { |
491527d0 |
123 | $path .= '/' if $^O eq 'os2' and $path =~ /^\w:$/; # feature of CRT |
037c8c09 |
124 | next if -d $path; |
125 | # Logic wants Unix paths, so go with the flow. |
126 | $path = VMS::Filespec::unixify($path) if $Is_VMS; |
127 | my $parent = File::Basename::dirname($path); |
491527d0 |
128 | # Allow for creation of new logical filesystems under VMS |
129 | if (not $Is_VMS or $parent !~ m:/[^/]+/000000/?:) { |
130 | push(@created,mkpath($parent, $verbose, $mode)) unless (-d $parent); |
131 | } |
037c8c09 |
132 | print "mkdir $path\n" if $verbose; |
67e4c828 |
133 | unless (mkdir($path,$mode)) { |
dbc63d46 |
134 | my $e = $!; |
135 | # allow for another process to have created it meanwhile |
136 | croak "mkdir $path: $e" unless -d $path; |
67e4c828 |
137 | } |
037c8c09 |
138 | push(@created, $path); |
fed7345c |
139 | } |
140 | @created; |
141 | } |
142 | |
143 | sub rmtree { |
144 | my($roots, $verbose, $safe) = @_; |
7301ec2d |
145 | my(@files); |
146 | my($count) = 0; |
037c8c09 |
147 | $verbose ||= 0; |
148 | $safe ||= 0; |
fed7345c |
149 | |
ee79a11f |
150 | if ( defined($roots) && length($roots) ) { |
151 | $roots = [$roots] unless ref $roots; |
152 | } |
153 | else { |
154 | carp "No root path(s) specified\n"; |
155 | return 0; |
156 | } |
157 | |
037c8c09 |
158 | my($root); |
fed7345c |
159 | foreach $root (@{$roots}) { |
037c8c09 |
160 | $root =~ s#/$##; |
7025f710 |
161 | (undef, undef, my $rp) = lstat $root or next; |
162 | $rp &= 07777; # don't forget setuid, setgid, sticky bits |
163 | if ( -d _ ) { |
037c8c09 |
164 | # notabene: 0777 is for making readable in the first place, |
165 | # it's also intended to change it to writable in case we have |
166 | # to recurse in which case we are better than rm -rf for |
167 | # subtrees with strange permissions |
96e4d5b1 |
168 | chmod(0777, ($Is_VMS ? VMS::Filespec::fileify($root) : $root)) |
037c8c09 |
169 | or carp "Can't make directory $root read+writeable: $!" |
170 | unless $safe; |
171 | |
172 | my $d = DirHandle->new($root) |
173 | or carp "Can't read $root: $!"; |
174 | @files = $d->read; |
175 | $d->close; |
176 | |
177 | # Deleting large numbers of files from VMS Files-11 filesystems |
178 | # is faster if done in reverse ASCIIbetical order |
179 | @files = reverse @files if $Is_VMS; |
180 | ($root = VMS::Filespec::unixify($root)) =~ s#\.dir$## if $Is_VMS; |
181 | @files = map("$root/$_", grep $_!~/^\.{1,2}$/,@files); |
182 | $count += rmtree(\@files,$verbose,$safe); |
183 | if ($safe && |
184 | ($Is_VMS ? !&VMS::Filespec::candelete($root) : !-w $root)) { |
185 | print "skipped $root\n" if $verbose; |
186 | next; |
187 | } |
188 | chmod 0777, $root |
189 | or carp "Can't make directory $root writeable: $!" |
190 | if $force_writeable; |
191 | print "rmdir $root\n" if $verbose; |
96e4d5b1 |
192 | if (rmdir $root) { |
193 | ++$count; |
194 | } |
195 | else { |
196 | carp "Can't remove directory $root: $!"; |
197 | chmod($rp, ($Is_VMS ? VMS::Filespec::fileify($root) : $root)) |
198 | or carp("and can't restore permissions to " |
199 | . sprintf("0%o",$rp) . "\n"); |
200 | } |
037c8c09 |
201 | } |
202 | else { |
203 | if ($safe && |
204 | ($Is_VMS ? !&VMS::Filespec::candelete($root) : !-w $root)) { |
205 | print "skipped $root\n" if $verbose; |
206 | next; |
207 | } |
208 | chmod 0666, $root |
209 | or carp "Can't make file $root writeable: $!" |
210 | if $force_writeable; |
211 | print "unlink $root\n" if $verbose; |
212 | # delete all versions under VMS |
94d4f21c |
213 | for (;;) { |
214 | unless (unlink $root) { |
96e4d5b1 |
215 | carp "Can't unlink file $root: $!"; |
216 | if ($force_writeable) { |
217 | chmod $rp, $root |
218 | or carp("and can't restore permissions to " |
219 | . sprintf("0%o",$rp) . "\n"); |
220 | } |
94d4f21c |
221 | last; |
96e4d5b1 |
222 | } |
94d4f21c |
223 | ++$count; |
224 | last unless $Is_VMS && lstat $root; |
037c8c09 |
225 | } |
226 | } |
fed7345c |
227 | } |
228 | |
229 | $count; |
230 | } |
231 | |
232 | 1; |