From: Perl 5 Porters <perl5-porters@africa.nicoh.com>
Date: Fri, 15 Mar 1996 03:49:14 +0000 (+0000)
Subject: Update to use $^O
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=c6538b72f406af2a34d587153702b663eaa3ec5e;p=p5sagit%2Fp5-mst-13.2.git

Update to use $^O
---

diff --git a/lib/AutoSplit.pm b/lib/AutoSplit.pm
index fd537bb..f9e3ad6 100644
--- a/lib/AutoSplit.pm
+++ b/lib/AutoSplit.pm
@@ -37,7 +37,7 @@ $CheckModTime = 1;
 $IndexFile = "autosplit.ix";	# file also serves as timestamp
 $maxflen = 255;
 $maxflen = 14 if $Config{'d_flexfnam'} ne 'define';
-$vms = ($Config{'osname'} eq 'VMS');
+$Is_VMS = ($^O eq 'VMS');
 
 
 sub autosplit{
@@ -62,7 +62,7 @@ sub autosplit_lib_modules{
 	s#::#/#g;	# incase specified as ABC::XYZ
 	s|\\|/|g;		# bug in ksh OS/2
 	s#^lib/##; # incase specified as lib/*.pm
-	if ($vms && /[:>\]]/) { # may need to convert VMS-style filespecs
+	if ($Is_VMS && /[:>\]]/) { # may need to convert VMS-style filespecs
 	    my ($dir,$name) = (/(.*])(.*)/);
 	    $dir =~ s/.*lib[\.\]]//;
 	    $dir =~ s#[\.\]]#/#g;
@@ -82,9 +82,7 @@ sub autosplit_file{
 
     # where to write output files
     $autodir = "lib/auto" unless $autodir;
-    if ($Config{'osname'} eq 'VMS') {
-	($autodir = VMS::Filespec::unixpath($autodir)) =~ s#/$##;
-    }
+    ($autodir = VMS::Filespec::unixpath($autodir)) =~ s#/$## if $Is_VMS;
     unless (-d $autodir){
 	local($", @p)="/";
 	foreach(split(/\//,$autodir)){
@@ -130,7 +128,7 @@ sub autosplit_file{
 
     die "Package $package does not match filename $filename"
 	    unless ($filename =~ m/$modpname.pm$/ or
-	            $vms && $filename =~ m/$modpname.pm/i);
+	            $Is_VMS && $filename =~ m/$modpname.pm/i);
 
     if ($check_mod_time){
 	my($al_ts_time) = (stat("$al_idx_file"))[9] || 1;
diff --git a/lib/Cwd.pm b/lib/Cwd.pm
index bc206db..bee2e17 100644
--- a/lib/Cwd.pm
+++ b/lib/Cwd.pm
@@ -1,11 +1,6 @@
 package Cwd;
 require 5.000;
 require Exporter;
-require Config;
-
-# Use osname for portability switches (doubled to cheaply avoid -w warning)
-my $osname = $Config::Config{'osname'} || $Config::Config{'osname'};
-
 
 =head1 NAME
 
@@ -177,7 +172,7 @@ sub fastcwd {
 my $chdir_init = 0;
 
 sub chdir_init {
-    if ($ENV{'PWD'} and $osname ne 'os2') {
+    if ($ENV{'PWD'} and $^O ne 'os2') {
 	my($dd,$di) = stat('.');
 	my($pd,$pi) = stat($ENV{'PWD'});
 	if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) {
@@ -203,7 +198,7 @@ sub chdir {
     $newdir =~ s|///*|/|g;
     chdir_init() unless $chdir_init;
     return 0 unless CORE::chdir $newdir;
-    if ($osname eq 'VMS') { return $ENV{'PWD'} = $ENV{'DEFAULT'} }
+    if ($^O eq 'VMS') { return $ENV{'PWD'} = $ENV{'DEFAULT'} }
 
     if ($newdir =~ m#^/#) {
 	$ENV{'PWD'} = $newdir;
@@ -225,21 +220,16 @@ sub chdir {
 # --- PORTING SECTION ---
 
 # VMS: $ENV{'DEFAULT'} points to default directory at all times
-# 08-Dec-1994  Charles Bailey  bailey@genetics.upenn.edu
-# Note: Use of Cwd::getcwd() or Cwd::chdir() (but not Cwd::fastcwd())
-#   causes the logical name PWD to be defined in the process 
-#   logical name table as the default device and directory 
+# 06-Mar-1996  Charles Bailey  bailey@genetics.upenn.edu
+# Note: Use of Cwd::chdir() causes the logical name PWD to be defined
+#   in the process logical name table as the default device and directory 
 #   seen by Perl. This may not be the same as the default device 
 #   and directory seen by DCL after Perl exits, since the effects
 #   the CRTL chdir() function persist only until Perl exits.
-# This does not apply to other systems (where only chdir() sets PWD).
 
 sub _vms_cwd {
     return $ENV{'DEFAULT'}
 }
-sub _vms_pwd {
-    return $ENV{'PWD'} = $ENV{'DEFAULT'}
-}
 sub _os2_cwd {
     $ENV{'PWD'} = `cmd /c cd`;
     chop $ENV{'PWD'};
@@ -247,24 +237,27 @@ sub _os2_cwd {
     return $ENV{'PWD'};
 }
 
-if ($osname eq 'VMS') {
+my($oldw) = $^W;
+$^W = 0;  # assignments trigger 'subroutine redefined' warning
+if ($^O eq 'VMS') {
 
-    *cwd        = \&_vms_pwd;
-    *getcwd     = \&_vms_pwd;
+    *cwd        = \&_vms_cwd;
+    *getcwd     = \&_vms_cwd;
     *fastcwd    = \&_vms_cwd;
     *fastgetcwd = \&_vms_cwd;
 }
-elsif ($osname eq 'NT') {
+elsif ($^O eq 'NT') {
 
     *getcwd     = \&cwd;
     *fastgetcwd = \&cwd;
 }
-elsif ($osname eq 'os2') {
+elsif ($^O eq 'os2') {
     *cwd     = \&_os2_cwd;
     *getcwd     = \&_os2_cwd;
     *fastgetcwd = \&_os2_cwd;
     *fastcwd = \&_os2_cwd;
 }
+$^W = $oldw;
 
 # package main; eval join('',<DATA>) || die $@;	# quick test
 
diff --git a/lib/diagnostics.pm b/lib/diagnostics.pm
index 23a93e5..3560f2d 100755
--- a/lib/diagnostics.pm
+++ b/lib/diagnostics.pm
@@ -3,7 +3,7 @@ eval 'exec perl -S $0  ${1+"$@"}'
     if 0;
 
 use Config;
-if ($Config{'osname'} eq 'VMS') {
+if ($^O eq 'VMS') {
    $diagnostics::PODFILE = VMS::Filespec::unixify($Config{'privlib'}) .
                            '/pod/perldiag.pod';
 }