# By John Bazik
#
# This library is no longer being maintained, and is included for backward
# compatibility with Perl 4 programs which may require it.
#
# In particular, this should not be used as an example of modern Perl
# programming techniques.
#
# Suggested alternative: Cwd
#
# Usage: $cwd = &fastcwd;
#
# This is a faster version of getcwd. It's also more dangerous because
# you might chdir out of a directory that you can't chdir back into.
sub fastcwd {
local($odev, $oino, $cdev, $cino, $tdev, $tino);
local(@path, $path);
local(*DIR);
($cdev, $cino) = stat('.');
for (;;) {
($odev, $oino) = ($cdev, $cino);
chdir('..');
($cdev, $cino) = stat('.');
last if $odev == $cdev && $oino == $cino;
opendir(DIR, '.');
for (;;) {
$_ = readdir(DIR);
next if $_ eq '.';
next if $_ eq '..';
last unless $_;
($tdev, $tino) = lstat($_);
last unless $tdev != $odev || $tino != $oino;
}
closedir(DIR);
unshift(@path, $_);
}
chdir($path = '/' . join('/', @path));
$path;
}
1;
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