зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
1.5 KiB
Raku
58 строки
1.5 KiB
Raku
#!perl5
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#
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# The contents of this file are subject to the Netscape Public
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# License Version 1.1 (the "License"); you may not use this file
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# except in compliance with the License. You may obtain a copy of
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# the License at http://www.mozilla.org/NPL/
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#
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# Software distributed under the License is distributed on an "AS
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# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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# implied. See the License for the specific language governing
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# rights and limitations under the License.
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#
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# The Original Code is mozilla.org code.
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#
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# The Initial Developer of the Original Code is Netscape
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# Communications Corporation. Portions created by Netscape are
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# Copyright (C) 1998 Netscape Communications Corporation. All
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# Rights Reserved.
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#
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# Contributor(s):
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#
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# By John Bazik
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#
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# Usage: $cwd = &fastcwd;
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#
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# This is a faster version of getcwd. It's also more dangerous because
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# you might chdir out of a directory that you can't chdir back into.
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#
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sub fastcwd {
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local($odev, $oino, $cdev, $cino, $tdev, $tino);
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local(@path, $path);
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local(*DIR);
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($cdev, $cino) = stat('.');
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for (;;) {
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($odev, $oino) = ($cdev, $cino);
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chdir('..');
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($cdev, $cino) = stat('.');
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last if $odev == $cdev && $oino == $cino;
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opendir(DIR, '.');
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for (;;) {
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$_ = readdir(DIR);
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next if $_ eq '.';
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next if $_ eq '..';
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last unless $_;
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($tdev, $tino) = lstat($_);
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last unless $tdev != $odev || $tino != $oino;
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}
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closedir(DIR);
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unshift(@path, $_);
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}
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chdir($path = '/' . join('/', @path));
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$path;
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}
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1;
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