X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FCwd.pm;h=4a263cd5fafdeddb2cd8c6f284718a74a110cc51;hb=9c5c68c8d8cf29abcdb2ff421bcd6e5daedf49ec;hp=5ddbbbed67e4a2d5ccf730afc530c41cd45d92e6;hpb=c739111c01bcc76523dcfc2986f6b0a93da0d494;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/lib/Cwd.pm b/lib/Cwd.pm
index 5ddbbbe..4a263cd 100644
--- a/lib/Cwd.pm
+++ b/lib/Cwd.pm
@@ -66,31 +66,42 @@ kept up to date if all packages which use chdir import it from Cwd.
 
 =cut
 
-## use strict;
+use strict;
 
 use Carp;
 
-$VERSION = '2.02';
+our $VERSION = '2.04';
 
-require Exporter;
-@ISA = qw(Exporter);
-@EXPORT = qw(cwd getcwd fastcwd fastgetcwd);
-@EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath);
+use base qw/ Exporter /;
+our @EXPORT = qw(cwd getcwd fastcwd fastgetcwd);
+our @EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath);
 
 
 # The 'natural and safe form' for UNIX (pwd may be setuid root)
 
 sub _backtick_pwd {
-    my $cwd;
-    chop($cwd = `pwd`);
+    my $cwd = `pwd`;
+    # `pwd` may fail e.g. if the disk is full
+    chomp($cwd) if defined $cwd;
     $cwd;
 }
 
 # Since some ports may predefine cwd internally (e.g., NT)
 # we take care not to override an existing definition for cwd().
 
-*cwd = \&_backtick_pwd unless defined &cwd;
+unless(defined &cwd) {
+    # The pwd command is not available in some chroot(2)'ed environments
+    if(grep { -x "$_/pwd" } split(':', $ENV{PATH})) {
+	*cwd = \&_backtick_pwd;
+    }
+    else {
+	*cwd = \&getcwd;
+    }
+}
 
+# set a reasonable (and very safe) default for fastgetcwd, in case it
+# isn't redefined later (20001212 rspier)
+*fastgetcwd = \&cwd;
 
 # By Brandon S. Allbery
 #
@@ -108,9 +119,6 @@ sub getcwd
 # This is a faster version of getcwd.  It's also more dangerous because
 # you might chdir out of a directory that you can't chdir back into.
     
-# List of metachars taken from do_exec() in doio.c
-my $quoted_shell_meta = quotemeta('$&*(){}[]";\\|?<>~`'."'\n");
-
 sub fastcwd {
     my($odev, $oino, $cdev, $cino, $tdev, $tino);
     my(@path, $path);
@@ -159,7 +167,7 @@ sub fastcwd {
 my $chdir_init = 0;
 
 sub chdir_init {
-    if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos') {
+    if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos' and $^O ne 'MSWin32') {
 	my($dd,$di) = stat('.');
 	my($pd,$pi) = stat($ENV{'PWD'});
 	if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) {
@@ -167,10 +175,12 @@ sub chdir_init {
 	}
     }
     else {
-	$ENV{'PWD'} = cwd();
+	my $wd = cwd();
+	$wd = Win32::GetFullPathName($wd) if $^O eq 'MSWin32';
+	$ENV{'PWD'} = $wd;
     }
     # Strip an automounter prefix (where /tmp_mnt/foo/bar == /foo/bar)
-    if ($ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) {
+    if ($^O ne 'MSWin32' and $ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) {
 	my($pd,$pi) = stat($2);
 	my($dd,$di) = stat($1);
 	if (defined $pd and defined $dd and $di == $pi and $dd == $pd) {
@@ -181,11 +191,17 @@ sub chdir_init {
 }
 
 sub chdir {
-    my $newdir = shift || '';	# allow for no arg (chdir to HOME dir)
-    $newdir =~ s|///*|/|g;
+    my $newdir = @_ ? shift : '';	# allow for no arg (chdir to HOME dir)
+    $newdir =~ s|///*|/|g unless $^O eq 'MSWin32';
     chdir_init() unless $chdir_init;
     return 0 unless CORE::chdir $newdir;
-    if ($^O eq 'VMS') { return $ENV{'PWD'} = $ENV{'DEFAULT'} }
+    if ($^O eq 'VMS') {
+	return $ENV{'PWD'} = $ENV{'DEFAULT'}
+    }
+    elsif ($^O eq 'MSWin32') {
+	$ENV{'PWD'} = Win32::GetFullPathName($newdir);
+	return 1;
+    }
 
     if ($newdir =~ m#^/#s) {
 	$ENV{'PWD'} = $newdir;
@@ -266,7 +282,7 @@ sub abs_path
 
 sub fast_abs_path {
     my $cwd = getcwd();
-    my $path = shift || '.';
+    my $path = @_ ? shift : '.';
     CORE::chdir($path) || croak "Cannot chdir to $path:$!";
     my $realpath = getcwd();
     CORE::chdir($cwd)  || croak "Cannot chdir back to $cwd:$!";
@@ -335,12 +351,17 @@ sub _qnx_cwd {
 }
 
 sub _qnx_abs_path {
-    my $path = shift || '.';
+    my $path = @_ ? shift : '.';
     my $realpath=`/usr/bin/fullpath -t $path`;
     chop $realpath;
     return $realpath;
 }
 
+sub _epoc_cwd {
+    $ENV{'PWD'} = EPOC::getcwd();
+    return $ENV{'PWD'};
+}
+
 {
     no warnings;	# assignments trigger 'subroutine redefined' warning
 
@@ -389,6 +410,13 @@ sub _qnx_abs_path {
         *fastcwd	= \&cwd;
         *abs_path	= \&fast_abs_path;
     }
+    elsif ($^O eq 'epoc') {
+        *cwd            = \&_epoc_cwd;
+        *getcwd	        = \&_epoc_cwd;
+        *fastgetcwd	= \&_epoc_cwd;
+        *fastcwd	= \&_epoc_cwd;
+        *abs_path	= \&fast_abs_path;
+    }
 }
 
 # package main; eval join('',<DATA>) || die $@;	# quick test