X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FFile%2FFind.pm;h=1faea50158f36f1e1281615e81061cc85956e541;hb=acce7d4e04d89207299003c3e80c69d50bc82069;hp=ba495a140a2f872d4f24d2ce756fddbd5f11d4cb;hpb=f06db76b9e41859439aeadb79feb6c603ee741ff;p=p5sagit%2Fp5-mst-13.2.git diff --git a/lib/File/Find.pm b/lib/File/Find.pm index ba495a1..1faea50 100644 --- a/lib/File/Find.pm +++ b/lib/File/Find.pm @@ -2,8 +2,9 @@ package File::Find; require 5.000; require Exporter; use Config; -use Cwd; -use File::Basename; +require Cwd; +require File::Basename; + =head1 NAME @@ -23,10 +24,15 @@ finddepth - traverse a directory structure depth-first =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 $prune to prune the tree. +The wanted() function does whatever verifications you want. +$File::Find::dir contains the current directory name, and $_ the +current filename within that directory. $File::Find::name contains +C<"$File::Find::dir/$_">. You are chdir()'d to $File::Find::dir when +the function is called. The function may set $File::Find::prune to +prune the tree. + +File::Find assumes that you don't alter the $_ variable. If you do then +make sure you return it to its original value before exiting your function. This library is primarily for the C tool, which when fed, @@ -43,10 +49,11 @@ produces something like: || ($nlink || (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_))) && $dev < 0 && - ($prune = 1); + ($File::Find::prune = 1); } -Set the variable $dont_use_nlink if you're using AFS, since AFS cheats. +Set the variable $File::Find::dont_use_nlink if you're using AFS, +since AFS cheats. C is just like C, except that it does a depth-first search. @@ -55,48 +62,21 @@ Here's another interesting wanted function. It will find all symlinks that don't resolve: sub wanted { - -l && !-e && print "bogus link: $name\n"; + -l && !-e && print "bogus link: $File::Find::name\n"; } =cut @ISA = qw(Exporter); -@EXPORT = qw(find finddepth $name $dir); - -# Usage: -# use File::Find; -# -# find(\&wanted, '/foo','/bar'); -# -# sub wanted { ... } -# where wanted does whatever you want. $dir contains the -# current directory name, and $_ the current filename within -# that directory. $name contains "$dir/$_". You are cd'ed -# to $dir when the function is called. The function may -# set $prune to prune the tree. -# -# This library is primarily for find2perl, which, when fed -# -# find2perl / -name .nfs\* -mtime +7 -exec rm -f {} \; -o -fstype nfs -prune -# -# spits out something like this -# -# sub wanted { -# /^\.nfs.*$/ && -# (($dev,$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. +@EXPORT = qw(find finddepth); + sub find { my $wanted = shift; - my $cwd = fastcwd(); + my $cwd = Cwd::cwd(); + # Localize these rather than lexicalizing them for backwards + # compatibility. + local($topdir,$topdev,$topino,$topmode,$topnlink); foreach $topdir (@_) { (($topdev,$topino,$topmode,$topnlink) = stat($topdir)) || (warn("Can't stat $topdir: $!\n"), next); @@ -105,8 +85,10 @@ sub find { ($dir,$_) = ($topdir,'.'); $name = $topdir; &$wanted; - ($fixtopdir = $topdir) =~ s,/$,, ; - $fixtopdir =~ s/\.dir$// if $Is_VMS; ; + my $fixtopdir = $topdir; + $fixtopdir =~ s,/$,, ; + $fixtopdir =~ s/\.dir$// if $Is_VMS; + $fixtopdir =~ s/\\dir$// if $Is_NT; &finddir($wanted,$fixtopdir,$topnlink); } else { @@ -114,7 +96,7 @@ sub find { } } else { - unless (($dir,$_) = fileparse($topdir)) { + unless (($_,$dir) = File::Basename::fileparse($topdir)) { ($dir,$_) = ('.', $topdir); } $name = $topdir; @@ -125,14 +107,15 @@ sub find { } sub finddir { - local($wanted,$dir,$nlink) = @_; - local($dev,$ino,$mode,$subcount); - local($name); + my($wanted, $nlink); + local($dir, $name); + ($wanted, $dir, $nlink) = @_; - # Get the list of files in the current directory. + my($dev, $ino, $mode, $subcount); + # Get the list of files in the current directory. opendir(DIR,'.') || (warn "Can't open $dir: $!\n", return); - local(@filenames) = readdir(DIR); + my(@filenames) = readdir(DIR); closedir(DIR); if ($nlink == 2 && !$dont_use_nlink) { # This dir has no subdirectories. @@ -156,8 +139,8 @@ sub finddir { # Get link count and check for directoriness. - ($dev,$ino,$mode,$nlink) = ($Is_VMS ? stat($_) : lstat($_)) - unless ($nlink || $dont_use_nlink); + ($dev,$ino,$mode,$nlink) = ($Is_VMS ? stat($_) : lstat($_)); + # unless ($nlink || $dont_use_nlink); if (-d _) { @@ -165,6 +148,7 @@ sub finddir { if (!$prune && chdir $_) { $name =~ s/\.dir$// if $Is_VMS; + $name =~ s/\\dir$// if $Is_NT; &finddir($wanted,$name,$nlink); chdir '..'; } @@ -175,45 +159,24 @@ sub finddir { } } -# Usage: -# use File::Find; -# -# finddepth(\&wanted, '/foo','/bar'); -# -# sub wanted { ... } -# where wanted does whatever you want. $dir contains the -# current directory name, and $_ the current filename within -# that directory. $name contains "$dir/$_". You are cd'ed -# to $dir when the function is called. The function may -# set $prune to prune the tree. -# -# This library is primarily for find2perl, which, when fed -# -# find2perl / -name .nfs\* -mtime +7 -exec rm -f {} \; -o -fstype nfs -prune -# -# spits out something like this -# -# sub wanted { -# /^\.nfs.*$/ && -# (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) && -# int(-M _) > 7 && -# unlink($_) -# || -# ($nlink || (($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_))) && -# $dev < 0 && -# ($prune = 1); -# } sub finddepth { my $wanted = shift; - $cwd = fastcwd();; + + $cwd = Cwd::fastcwd();; + + # Localize these rather than lexicalizing them for backwards + # compatibility. + local($topdir, $topdev, $topino, $topmode, $topnlink); foreach $topdir (@_) { (($topdev,$topino,$topmode,$topnlink) = stat($topdir)) || (warn("Can't stat $topdir: $!\n"), next); if (-d _) { if (chdir($topdir)) { - ($fixtopdir = $topdir) =~ s,/$,, ; + my $fixtopdir = $topdir; + $fixtopdir =~ s,/$,, ; $fixtopdir =~ s/\.dir$// if $Is_VMS; + $fixtopdir =~ s/\\dir$// if $Is_NT; &finddepthdir($wanted,$fixtopdir,$topnlink); ($dir,$_) = ($fixtopdir,'.'); $name = $fixtopdir; @@ -224,7 +187,7 @@ sub finddepth { } } else { - unless (($dir,$_) = fileparse($topdir)) { + unless (($_,$dir) = File::Basename::fileparse($topdir)) { ($dir,$_) = ('.', $topdir); } chdir $dir && &$wanted; @@ -234,12 +197,12 @@ sub finddepth { } sub finddepthdir { - my($wanted,$dir,$nlink) = @_; - my($dev,$ino,$mode,$subcount); - my($name); + my($wanted, $nlink); + local($dir, $name); + ($wanted,$dir,$nlink) = @_; + my($dev, $ino, $mode, $subcount); # Get the list of files in the current directory. - opendir(DIR,'.') || warn "Can't open $dir: $!\n"; my(@filenames) = readdir(DIR); closedir(DIR); @@ -258,7 +221,7 @@ sub finddepthdir { for (@filenames) { next if $_ eq '.'; next if $_ eq '..'; - $nlink = $prune = 0; + $nlink = 0; $name = "$dir/$_"; if ($subcount > 0 || $dont_use_nlink) { # Seen all the subdirs? @@ -270,8 +233,9 @@ sub finddepthdir { # It really is a directory, so do it recursively. - if (!$prune && chdir $_) { + if (chdir $_) { $name =~ s/\.dir$// if $Is_VMS; + $name =~ s/\\dir$// if $Is_NT; &finddepthdir($wanted,$name,$nlink); chdir '..'; } @@ -283,10 +247,24 @@ sub finddepthdir { } } -if ($Config{'osname'} eq 'VMS') { +# Set dont_use_nlink in your hint file if your system's stat doesn't +# report the number of links in a directory as an indication +# of the number of files. +# See, e.g. hints/machten.sh for MachTen 2.2. +$dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); + +# These are hard-coded for now, but may move to hint files. +if ($^O eq 'VMS') { $Is_VMS = 1; $dont_use_nlink = 1; } +if ($^O =~ m:^mswin32:i) { + $Is_NT = 1; + $dont_use_nlink = 1; +} + +$dont_use_nlink = 1 + if $^O eq 'os2' || $^O eq 'msdos' || $^O eq 'amigaos'; 1;