/[jscoverage]/trunk/js/config/fastcwd.pl
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Contents of /trunk/js/config/fastcwd.pl

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Revision 399 - (show annotations)
Tue Dec 9 03:37:47 2008 UTC (10 years, 8 months ago) by siliconforks
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1 #!perl5
2 #
3 # ***** BEGIN LICENSE BLOCK *****
4 # Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 #
6 # The contents of this file are subject to the Mozilla Public License Version
7 # 1.1 (the "License"); you may not use this file except in compliance with
8 # the License. You may obtain a copy of the License at
9 # http://www.mozilla.org/MPL/
10 #
11 # Software distributed under the License is distributed on an "AS IS" basis,
12 # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 # for the specific language governing rights and limitations under the
14 # License.
15 #
16 # The Original Code is mozilla.org code.
17 #
18 # The Initial Developer of the Original Code is
19 # Netscape Communications Corporation.
20 # Portions created by the Initial Developer are Copyright (C) 1998
21 # the Initial Developer. All Rights Reserved.
22 #
23 # Contributor(s):
24 #
25 # Alternatively, the contents of this file may be used under the terms of
26 # either of the GNU General Public License Version 2 or later (the "GPL"),
27 # or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 # in which case the provisions of the GPL or the LGPL are applicable instead
29 # of those above. If you wish to allow use of your version of this file only
30 # under the terms of either the GPL or the LGPL, and not to allow others to
31 # use your version of this file under the terms of the MPL, indicate your
32 # decision by deleting the provisions above and replace them with the notice
33 # and other provisions required by the GPL or the LGPL. If you do not delete
34 # the provisions above, a recipient may use your version of this file under
35 # the terms of any one of the MPL, the GPL or the LGPL.
36 #
37 # ***** END LICENSE BLOCK *****
38
39 sub fastcwd {
40 local($odev, $oino, $cdev, $cino, $tdev, $tino);
41 local(@path, $path);
42 local(*DIR);
43
44 ($cdev, $cino) = stat('.');
45 for (;;) {
46 ($odev, $oino) = ($cdev, $cino);
47 chdir('..');
48 ($cdev, $cino) = stat('.');
49 last if $odev == $cdev && $oino == $cino;
50 opendir(DIR, '.');
51 for (;;) {
52 $_ = readdir(DIR);
53 next if $_ eq '.';
54 next if $_ eq '..';
55
56 last unless $_;
57 ($tdev, $tino) = lstat($_);
58 last unless $tdev != $odev || $tino != $oino;
59 }
60 closedir(DIR);
61 unshift(@path, $_);
62 }
63 chdir($path = '/' . join('/', @path));
64 $path;
65 }
66 1;

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