mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-30 00:01:50 +00:00
54 lines
1.4 KiB
Raku
54 lines
1.4 KiB
Raku
#!perl5
|
|
#
|
|
# The contents of this file are subject to the Netscape Public License
|
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
|
# http://www.mozilla.org/NPL/
|
|
#
|
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
# for the specific language governing rights and limitations under the
|
|
# NPL.
|
|
#
|
|
# The Initial Developer of this code under the NPL is Netscape
|
|
# Communications Corporation. Portions created by Netscape are
|
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
# Reserved.
|
|
#
|
|
# By John Bazik
|
|
#
|
|
# 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;
|