package File::Find;
require 5.000;
require Exporter;
+use Config;
+use Cwd;
+use File::Basename;
+
+=head1 NAME
+
+find - traverse a file tree
+
+finddepth - traverse a directory structure depth-first
+
+=head1 SYNOPSIS
+
+ use File::Find;
+ find(\&wanted, '/foo','/bar');
+ sub wanted { ... }
+
+ use File::Find;
+ finddepth(\&wanted, '/foo','/bar');
+ sub wanted { ... }
+
+=head1 DESCRIPTION
+
+The wanted() function does whatever verifications you want. $dir contains
+the current directory name, and $_ the current filename within that
+directory. $name contains C<"$dir/$_">. You are chdir()'d to $dir when
+the function is called. The function may set $prune to prune the tree.
+
+This library is primarily for the C<find2perl> tool, which when fed,
+
+ find2perl / -name .nfs\* -mtime +7 \
+ -exec rm -f {} \; -o -fstype nfs -prune
+
+produces something like:
+
+ sub wanted {
+ /^\.nfs.*$/ &&
+ (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
+ int(-M _) > 7 &&
+ unlink($_)
+ ||
+ ($nlink || (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_))) &&
+ $dev < 0 &&
+ ($prune = 1);
+ }
+
+Set the variable $dont_use_nlink if you're using AFS, since AFS cheats.
+
+C<finddepth> is just like C<find>, except that it does a depth-first
+search.
+
+Here's another interesting wanted function. It will find all symlinks
+that don't resolve:
+
+ sub wanted {
+ -l && !-e && print "bogus link: $name\n";
+ }
+
+=cut
@ISA = qw(Exporter);
-@EXPORT = qw(find finddepth);
+@EXPORT = qw(find finddepth $name $dir);
+
+$dont_use_nlink = 1 if $Config{osname} =~ m:^os/?2$:i ;
# Usage:
# use File::Find;
sub find {
my $wanted = shift;
- chop($cwd = `pwd`);
+ my $cwd = fastcwd();
foreach $topdir (@_) {
(($topdev,$topino,$topmode,$topnlink) = stat($topdir))
|| (warn("Can't stat $topdir: $!\n"), next);
$name = $topdir;
&$wanted;
($fixtopdir = $topdir) =~ s,/$,, ;
+ $fixtopdir =~ s/\.dir$// if $Is_VMS; ;
&finddir($wanted,$fixtopdir,$topnlink);
}
else {
}
}
else {
- unless (($dir,$_) = $topdir =~ m#^(.*/)(.*)$#) {
+ unless (($dir,$_) = fileparse($topdir)) {
($dir,$_) = ('.', $topdir);
}
$name = $topdir;
# Get link count and check for directoriness.
- ($dev,$ino,$mode,$nlink) = lstat($_) unless $nlink;
+ ($dev,$ino,$mode,$nlink) = ($Is_VMS ? stat($_) : lstat($_))
+ unless ($nlink || $dont_use_nlink);
if (-d _) {
# It really is a directory, so do it recursively.
if (!$prune && chdir $_) {
+ $name =~ s/\.dir$// if $Is_VMS;
&finddir($wanted,$name,$nlink);
chdir '..';
}
sub finddepth {
my $wanted = shift;
- chop($cwd = `pwd`);
+ $cwd = fastcwd();;
foreach $topdir (@_) {
(($topdev,$topino,$topmode,$topnlink) = stat($topdir))
|| (warn("Can't stat $topdir: $!\n"), next);
if (-d _) {
if (chdir($topdir)) {
($fixtopdir = $topdir) =~ s,/$,, ;
+ $fixtopdir =~ s/\.dir$// if $Is_VMS;
&finddepthdir($wanted,$fixtopdir,$topnlink);
($dir,$_) = ($fixtopdir,'.');
$name = $fixtopdir;
}
}
else {
- unless (($dir,$_) = $topdir =~ m#^(.*/)(.*)$#) {
+ unless (($dir,$_) = fileparse($topdir)) {
($dir,$_) = ('.', $topdir);
}
chdir $dir && &$wanted;
sub finddepthdir {
my($wanted,$dir,$nlink) = @_;
my($dev,$ino,$mode,$subcount);
- my($name);
+ local($name); # so &wanted sees current value
# Get the list of files in the current directory.
my(@filenames) = readdir(DIR);
closedir(DIR);
- if ($nlink == 2) { # This dir has no subdirectories.
+ if ($nlink == 2 && !$dont_use_nlink) { # This dir has no subdirectories.
for (@filenames) {
next if $_ eq '.';
next if $_ eq '..';
next if $_ eq '..';
$nlink = $prune = 0;
$name = "$dir/$_";
- if ($subcount > 0) { # Seen all the subdirs?
+ if ($subcount > 0 || $dont_use_nlink) { # Seen all the subdirs?
# Get link count and check for directoriness.
- ($dev,$ino,$mode,$nlink) = lstat($_) unless $nlink;
+ ($dev,$ino,$mode,$nlink) = ($Is_VMS ? stat($_) : lstat($_));
if (-d _) {
# It really is a directory, so do it recursively.
if (!$prune && chdir $_) {
+ $name =~ s/\.dir$// if $Is_VMS;
&finddepthdir($wanted,$name,$nlink);
chdir '..';
}
}
}
+if ($Config{'osname'} eq 'VMS') {
+ $Is_VMS = 1;
+ $dont_use_nlink = 1;
+}
+
1;