3 # Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
4 # This program is free software; you can redistribute it and/or
5 # modify it under the same terms as Perl itself.
16 our(@ISA, $VERSION, @EXPORT_OK);
21 @ISA = qw(Tie::Hash Exporter);
23 $VERSION = eval $VERSION;
24 @EXPORT_OK = qw(DIR_UNLINK);
26 sub DIR_UNLINK () { 1 }
29 @_ >= 1 && @_ <= 2 or croak 'usage: new IO::Dir [DIRNAME]';
33 IO::Dir::open($dh, $_[0])
46 @_ == 2 or croak 'usage: $dh->open(DIRNAME)';
47 my ($dh, $dirname) = @_;
49 unless opendir($dh, $dirname);
50 # a dir name should always have a ":" in it; assume dirname is
51 # in current directory
52 $dirname = ':' . $dirname if ( ($^O eq 'MacOS') && ($dirname !~ /:/) );
53 ${*$dh}{io_dir_path} = $dirname;
58 @_ == 1 or croak 'usage: $dh->close()';
64 @_ == 1 or croak 'usage: $dh->read()';
70 @_ == 2 or croak 'usage: $dh->seek(POS)';
76 @_ == 1 or croak 'usage: $dh->tell()';
82 @_ == 1 or croak 'usage: $dh->rewind()';
88 my($class,$dir,$options) = @_;
90 my $dh = $class->new($dir)
95 ${*$dh}{io_dir_unlink} = $options & DIR_UNLINK;
112 -e File::Spec->catfile(${*$dh}{io_dir_path}, $key);
117 &lstat(File::Spec->catfile(${*$dh}{io_dir_path}, $key));
121 my($dh,$key,$data) = @_;
122 my($atime,$mtime) = ref($data) ? @$data : ($data,$data);
123 my $file = File::Spec->catfile(${*$dh}{io_dir_path}, $key);
125 my $io = IO::File->new($file,O_CREAT | O_RDWR);
128 utime($atime,$mtime, $file);
134 # Only unlink if unlink-ing is enabled
136 unless ${*$dh}{io_dir_unlink};
138 my $file = File::Spec->catfile(${*$dh}{io_dir_path}, $key);
151 IO::Dir - supply object methods for directory handles
156 $d = IO::Dir->new(".");
158 while (defined($_ = $d->read)) { something($_); }
160 while (defined($_ = $d->read)) { something_else($_); }
164 tie %dir, 'IO::Dir', ".";
165 foreach (keys %dir) {
166 print $_, " " , $dir{$_}->size,"\n";
171 The C<IO::Dir> package provides two interfaces to perl's directory reading
174 The first interface is an object approach. C<IO::Dir> provides an object
175 constructor and methods, which are just wrappers around perl's built in
176 directory reading routines.
180 =item new ( [ DIRNAME ] )
182 C<new> is the constructor for C<IO::Dir> objects. It accepts one optional
183 argument which, if given, C<new> will pass to C<open>
187 The following methods are wrappers for the directory related functions built
188 into perl (the trailing `dir' has been removed from the names). See L<perlfunc>
189 for details of these functions.
193 =item open ( DIRNAME )
207 C<IO::Dir> also provides an interface to reading directories via a tied
208 hash. The tied hash extends the interface beyond just the directory
209 reading routines by the use of C<lstat>, from the C<File::stat> package,
210 C<unlink>, C<rmdir> and C<utime>.
214 =item tie %hash, 'IO::Dir', DIRNAME [, OPTIONS ]
218 The keys of the hash will be the names of the entries in the directory.
219 Reading a value from the hash will be the result of calling
220 C<File::stat::lstat>. Deleting an element from the hash will
221 delete the corresponding file or subdirectory,
222 provided that C<DIR_UNLINK> is included in the C<OPTIONS>.
224 Assigning to an entry in the hash will cause the time stamps of the file
225 to be modified. If the file does not exist then it will be created. Assigning
226 a single integer to a hash element will cause both the access and
227 modification times to be changed to that value. Alternatively a reference to
228 an array of two values can be passed. The first array element will be used to
229 set the access time and the second element will be used to set the modification
238 Graham Barr. Currently maintained by the Perl Porters. Please report all
239 bugs to <perl5-porters@perl.org>.
243 Copyright (c) 1997-2003 Graham Barr <gbarr@pobox.com>. All rights reserved.
244 This program is free software; you can redistribute it and/or
245 modify it under the same terms as Perl itself.