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# By Brandon S. Allbery
#
# 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: $cwd = &getcwd;
sub getcwd
{
local($dotdots, $cwd, @pst, @cst, $dir, @tst);
unless (@cst = stat('.'))
{
warn "stat(.): $!";
return '';
}
$cwd = '';
do
{
$dotdots .= '/' if $dotdots;
$dotdots .= '..';
@pst = @cst;
unless (opendir(getcwd'PARENT, $dotdots)) #'))
{
warn "opendir($dotdots): $!";
return '';
}
unless (@cst = stat($dotdots))
{
warn "stat($dotdots): $!";
closedir(getcwd'PARENT); #');
return '';
}
if ($pst[0] == $cst[0] && $pst[1] == $cst[1])
{
$dir = '';
}
else
{
do
{
unless (defined ($dir = readdir(getcwd'PARENT))) #'))
{
warn "readdir($dotdots): $!";
closedir(getcwd'PARENT); #');
return '';
}
unless (@tst = lstat("$dotdots/$dir"))
{
# warn "lstat($dotdots/$dir): $!";
# closedir(getcwd'PARENT); #');
# return '';
}
}
while ($dir eq '.' || $dir eq '..' || $tst[0] != $pst[0] ||
$tst[1] != $pst[1]);
}
$cwd = "$dir/$cwd";
closedir(getcwd'PARENT); #');
} while ($dir ne '');
chop($cwd);
$cwd;
}
1;