MakeMaker support for pod2html

[p5sagit/p5-mst-13.2.git] / lib / Cwd.pm

diff --git a/lib/Cwd.pm b/lib/Cwd.pm
index 652ee7e..8a99da9 100644 (file)
--- a/lib/Cwd.pm
+++ b/lib/Cwd.pm
@@ -20,11 +20,21 @@ getcwd - get pathname of current working directory
     chdir "/tmp";
     print $ENV{'PWD'};
 
+    use Cwd 'abs_path';
+    print abs_path($ENV{'PWD'});
+
+    use Cwd 'fast_abs_path';
+    print fast_abs_path($ENV{'PWD'});
+
 =head1 DESCRIPTION
 
 The getcwd() function re-implements the getcwd(3) (or getwd(3)) functions
 in Perl.
 
+The abs_path() function takes a single argument and returns the
+absolute pathname for that argument. It uses the same algorithm as
+getcwd(). (actually getcwd() is abs_path("."))
+
 The fastcwd() function looks the same as getcwd(), but runs faster.
 It's also more dangerous because it might conceivably chdir() you out
 of a directory that it can't chdir() you back into.  If fastcwd
@@ -35,6 +45,9 @@ that it leaves you in the same directory that it started in. If it has
 changed it will C<die> with the message "Unstable directory path,
 current directory changed unexpectedly". That should never happen.
 
+The fast_abs_path() function looks the same as abs_path(), but runs faster.
+And like fastcwd() is more dangerous.
+
 The cwd() function looks the same as getcwd and fastgetcwd but is
 implemented using the most natural and safe form for the current
 architecture. For most systems it is identical to `pwd` (but without
@@ -105,7 +118,7 @@ sub fastcwd {
     for (;;) {
        my $direntry;
        ($odev, $oino) = ($cdev, $cino);
-       chdir('..') || return undef;
+       CORE::chdir('..') || return undef;
        ($cdev, $cino) = stat('.');
        last if $odev == $cdev && $oino == $cino;
        opendir(DIR, '.') || return undef;
@@ -123,10 +136,11 @@ sub fastcwd {
        unshift(@path, $direntry);
     }
     $path = '/' . join('/', @path);
+    if ($^O eq 'apollo') { $path = "/".$path; }
     # At this point $path may be tainted (if tainting) and chdir would fail.
     # To be more useful we untaint it then check that we landed where we started.
     $path = $1 if $path =~ /^(.*)$/;   # untaint
-    chdir($path) || return undef;
+    CORE::chdir($path) || return undef;
     ($cdev, $cino) = stat('.');
     die "Unstable directory path, current directory changed unexpectedly"
        if $cdev != $orig_cdev || $cino != $orig_cino;
@@ -246,9 +260,9 @@ sub abs_path
 sub fast_abs_path {
     my $cwd = getcwd();
     my $path = shift || '.';
-    chdir($path) || croak "Cannot chdir to $path:$!";
+    CORE::chdir($path) || croak "Cannot chdir to $path:$!";
     my $realpath = getcwd();
-    chdir($cwd)  || croak "Cannot chdir back to $cwd:$!";
+    CORE::chdir($cwd)  || croak "Cannot chdir back to $cwd:$!";
     $realpath;
 }
 
@@ -256,7 +270,7 @@ sub fast_abs_path {
 # --- PORTING SECTION ---
 
 # VMS: $ENV{'DEFAULT'} points to default directory at all times
-# 06-Mar-1996  Charles Bailey  bailey@genetics.upenn.edu
+# 06-Mar-1996  Charles Bailey  bailey@newman.upenn.edu
 # Note: Use of Cwd::chdir() causes the logical name PWD to be defined
 #   in the process logical name table as the default device and directory
 #   seen by Perl. This may not be the same as the default device
@@ -358,6 +372,12 @@ sub _qnx_abs_path {
         *abs_path      = \&_qnx_abs_path;
         *fast_abs_path = \&_qnx_abs_path;
     }
+    elsif ($^O =~ /cygwin/) {
+        *getcwd        = \&cwd;
+        *fastgetcwd    = \&cwd;
+        *fastcwd       = \&cwd;
+        *abs_path      = \&fast_abs_path;
+    }
 }
 
 # package main; eval join('',<DATA>) || die $@;        # quick test