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# By John Bazik |
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# |
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# This library is no longer being maintained, and is included for backward |
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# compatibility with Perl 4 programs which may require it. |
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# |
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# In particular, this should not be used as an example of modern Perl |
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# programming techniques. |
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# |
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# Suggested alternative: Cwd |
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# |
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# Usage: $cwd = &fastcwd; |
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# |
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# This is a faster version of getcwd. It's also more dangerous because |
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# you might chdir out of a directory that you can't chdir back into. |
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sub fastcwd { |
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local($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; |
