package File::Find;
+use 5.006;
use strict;
use warnings;
-use 5.6.0;
-our $VERSION = '1.02';
+use warnings::register;
+our $VERSION = '1.04';
require Exporter;
require Cwd;
filehandle that caches the information from the preceding
stat(), lstat(), or filetest.
-Set the variable C<$File::Find::dont_use_nlink> if you're using AFS,
-since AFS cheats.
-
Here's another interesting wanted function. It will find all symbolic
links that don't resolve:
See also the script C<pfind> on CPAN for a nice application of this
module.
+=head1 WARNINGS
+
+If you run your program with the C<-w> switch, or if you use the
+C<warnings> pragma, File::Find will report warnings for several weird
+situations. You can disable these warnings by putting the statement
+
+ no warnings 'File::Find';
+
+in the appropriate scope. See L<perllexwarn> for more info about lexical
+warnings.
+
=head1 CAVEAT
+=over 2
+
+=item $dont_use_nlink
+
+You can set the variable C<$File::Find::dont_use_nlink> to 1, if you want to
+force File::Find to always stat directories. This was used for systems
+that do not have the correct C<nlink> count for directories. Examples are
+ISO-9660 (CD-R), AFS, and operating systems like OS/2, DOS and a couple of
+others.
+
+Since now File::Find should now detect such things on-the-fly and switch it
+self to using stat, this will probably not a problem to you.
+
+If you do set $dont_use_nlink to 1, you will notice slow-downs.
+
+=item symlinks
+
Be aware that the option to follow symbolic links can be dangerous.
Depending on the structure of the directory tree (including symbolic
links to directories) you might traverse a given (physical) directory
might cause very unpleasant surprises, since you delete or change files
in an unknown directory.
+=back
+
=head1 NOTES
=over 4
return undef unless defined $DEV; # dangling symbolic link
}
- if ($full_check && $SLnkSeen{$DEV, $INO}++) {
+ if ($full_check && defined $DEV && $SLnkSeen{$DEV, $INO}++) {
if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) {
die "$AbsName encountered a second time";
}
else {
$abs_dir = contract_name_Mac($cwd, $top_item);
unless (defined $abs_dir) {
- warn "Can't determine absolute path for $top_item (No such file or directory)\n" if $^W;
+ warnings::warnif "Can't determine absolute path for $top_item (No such file or directory)\n";
next Proc_Top_Item;
}
}
if (ref $dangling_symlinks eq 'CODE') {
$dangling_symlinks->($top_item, $cwd);
} else {
- warn "$top_item is a dangling symbolic link\n" if $^W;
+ warnings::warnif "$top_item is a dangling symbolic link\n";
}
}
next Proc_Top_Item;
else { # no follow
$topdir = $top_item;
unless (defined $topnlink) {
- warn "Can't stat $top_item: $!\n" if $^W;
+ warnings::warnif "Can't stat $top_item: $!\n";
next Proc_Top_Item;
}
if (-d _) {
}
unless ($no_chdir || chdir $abs_dir) {
- warn "Couldn't chdir $abs_dir: $!\n" if $^W;
+ warnings::warnif "Couldn't chdir $abs_dir: $!\n";
next Proc_Top_Item;
}
my $SE= [];
my $dir_name= $p_dir;
my $dir_pref;
- my $dir_rel;
+ my $dir_rel = $File::Find::current_dir;
my $tainted = 0;
+ my $no_nlink;
if ($Is_MacOS) {
$dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface
- $dir_rel= ':'; # directory name relative to current directory
}
else {
$dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" );
- $dir_rel= '.'; # directory name relative to current directory
}
local ($dir, $name, $prune, *DIR);
}
}
unless (chdir $udir) {
- warn "Can't cd to $udir: $!\n" if $^W;
+ warnings::warnif "Can't cd to $udir: $!\n";
return;
}
}
}
unless (chdir $udir) {
if ($Is_MacOS) {
- warn "Can't cd to ($p_dir) $udir: $!\n" if $^W;
+ warnings::warnif "Can't cd to ($p_dir) $udir: $!\n";
}
else {
- warn "Can't cd to (" . ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n" if $^W;
+ warnings::warnif "Can't cd to (" .
+ ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n";
}
next;
}
# Get the list of files in the current directory.
unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) {
- warn "Can't opendir($dir_name): $!\n" if $^W;
+ warnings::warnif "Can't opendir($dir_name): $!\n";
next;
}
@filenames = readdir DIR;
@filenames = &$pre_process(@filenames) if $pre_process;
push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process;
- if ($nlink == 2 && !$avoid_nlink) {
+ # default: use whatever was specifid
+ # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back)
+ $no_nlink = $avoid_nlink;
+ # if dir has wrong nlink count, force switch to slower stat method
+ $no_nlink = 1 if ($nlink < 2);
+
+ if ($nlink == 2 && !$no_nlink) {
# This dir has no subdirectories.
for my $FN (@filenames) {
next if $FN =~ $File::Find::skip_pattern;
for my $FN (@filenames) {
next if $FN =~ $File::Find::skip_pattern;
- if ($subcount > 0 || $avoid_nlink) {
+ if ($subcount > 0 || $no_nlink) {
# Seen all the subdirs?
# check for directoriness.
# stat is faster for a file in the current directory
if ( $nlink == -2 ) {
$name = $dir = $p_dir; # $File::Find::name / dir
- if ($Is_MacOS) {
- $_ = ':'; # $_
- }
- else {
- $_ = '.';
- }
+ $_ = $File::Find::current_dir;
&$post_process; # End-of-directory processing
}
elsif ( $nlink < 0 ) { # must be finddepth, report dirname now
my $dir_name = $p_dir;
my $dir_pref;
my $loc_pref;
- my $dir_rel;
+ my $dir_rel = $File::Find::current_dir;
my $byd_flag; # flag for pending stack entry if $bydepth
my $tainted = 0;
my $ok = 1;
if ($Is_MacOS) {
$dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:";
$loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:";
- $dir_rel = ':'; # directory name relative to current directory
} else {
$dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" );
$loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" );
- $dir_rel = '.'; # directory name relative to current directory
}
local ($dir, $name, $fullname, $prune, *DIR);
}
$ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir);
unless ($ok) {
- warn "Can't cd to $updir_loc: $!\n" if $^W;
+ warnings::warnif "Can't cd to $updir_loc: $!\n";
return;
}
}
# change (back) to parent directory (always untainted)
unless ($no_chdir) {
unless (chdir $updir_loc) {
- warn "Can't cd to $updir_loc: $!\n" if $^W;
+ warnings::warnif "Can't cd to $updir_loc: $!\n";
next;
}
}
}
}
unless (chdir $updir_loc) {
- warn "Can't cd to $updir_loc: $!\n" if $^W;
+ warnings::warnif "Can't cd to $updir_loc: $!\n";
next;
}
}
# Get the list of files in the current directory.
unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) {
- warn "Can't opendir($dir_loc): $!\n" if $^W;
+ warnings::warnif "Can't opendir($dir_loc): $!\n";
next;
}
@filenames = readdir DIR;
if ( $byd_flag < 0 ) { # must be finddepth, report dirname now
unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) {
unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted
- warn "Can't cd to $updir_loc: $!\n" if $^W;
+ warnings::warnif "Can't cd to $updir_loc: $!\n";
next;
}
}
projects / p5sagit/p5-mst-13.2.git / blobdiff