| 1 | # By Brandon S. Allbery |
| 2 | # |
| 3 | # This library is no longer being maintained, and is included for backward |
| 4 | # compatibility with Perl 4 programs which may require it. |
| 5 | # |
| 6 | # In particular, this should not be used as an example of modern Perl |
| 7 | # programming techniques. |
| 8 | # |
| 9 | # Suggested alternative: Cwd |
| 10 | # |
| 11 | # |
| 12 | # Usage: $cwd = &getcwd; |
| 13 | |
| 14 | sub getcwd |
| 15 | { |
| 16 | local($dotdots, $cwd, @pst, @cst, $dir, @tst); |
| 17 | |
| 18 | unless (@cst = stat('.')) |
| 19 | { |
| 20 | warn "stat(.): $!"; |
| 21 | return ''; |
| 22 | } |
| 23 | $cwd = ''; |
| 24 | do |
| 25 | { |
| 26 | $dotdots .= '/' if $dotdots; |
| 27 | $dotdots .= '..'; |
| 28 | @pst = @cst; |
| 29 | unless (opendir(getcwd'PARENT, $dotdots)) #')) |
| 30 | { |
| 31 | warn "opendir($dotdots): $!"; |
| 32 | return ''; |
| 33 | } |
| 34 | unless (@cst = stat($dotdots)) |
| 35 | { |
| 36 | warn "stat($dotdots): $!"; |
| 37 | closedir(getcwd'PARENT); #'); |
| 38 | return ''; |
| 39 | } |
| 40 | if ($pst[$[] == $cst[$[] && $pst[$[ + 1] == $cst[$[ + 1]) |
| 41 | { |
| 42 | $dir = ''; |
| 43 | } |
| 44 | else |
| 45 | { |
| 46 | do |
| 47 | { |
| 48 | unless (defined ($dir = readdir(getcwd'PARENT))) #')) |
| 49 | { |
| 50 | warn "readdir($dotdots): $!"; |
| 51 | closedir(getcwd'PARENT); #'); |
| 52 | return ''; |
| 53 | } |
| 54 | unless (@tst = lstat("$dotdots/$dir")) |
| 55 | { |
| 56 | # warn "lstat($dotdots/$dir): $!"; |
| 57 | # closedir(getcwd'PARENT); #'); |
| 58 | # return ''; |
| 59 | } |
| 60 | } |
| 61 | while ($dir eq '.' || $dir eq '..' || $tst[$[] != $pst[$[] || |
| 62 | $tst[$[ + 1] != $pst[$[ + 1]); |
| 63 | } |
| 64 | $cwd = "$dir/$cwd"; |
| 65 | closedir(getcwd'PARENT); #'); |
| 66 | } while ($dir ne ''); |
| 67 | chop($cwd); |
| 68 | $cwd; |
| 69 | } |
| 70 | |
| 71 | 1; |