Commit | Line | Data |
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a0d0e21e | 1 | package Cwd; |
3b825e41 | 2 | use 5.006; |
a0d0e21e | 3 | |
f06db76b AD |
4 | =head1 NAME |
5 | ||
902bacac | 6 | Cwd - get pathname of current working directory |
f06db76b AD |
7 | |
8 | =head1 SYNOPSIS | |
9 | ||
4633a7c4 | 10 | use Cwd; |
04929354 | 11 | my $dir = getcwd; |
4633a7c4 | 12 | |
04929354 MS |
13 | use Cwd 'abs_path'; |
14 | my $abs_path = abs_path($file); | |
f06db76b | 15 | |
04929354 | 16 | =head1 DESCRIPTION |
902bacac | 17 | |
04929354 MS |
18 | This module provides functions for determining the pathname of the |
19 | current working directory. It is recommended that getcwd (or another | |
20 | *cwd() function) be used in I<all> code to ensure portability. | |
f06db76b | 21 | |
04929354 MS |
22 | By default, it exports the functions cwd(), getcwd(), fastcwd(), and |
23 | fastgetcwd() into the caller's namespace. | |
f06db76b | 24 | |
20408e3c | 25 | |
04929354 | 26 | =head2 getcwd and friends |
20408e3c | 27 | |
04929354 MS |
28 | Each of these functions are called without arguments and return the |
29 | absolute path of the current working directory. | |
f06db76b | 30 | |
04929354 MS |
31 | =over 4 |
32 | ||
33 | =item getcwd | |
34 | ||
35 | my $cwd = getcwd(); | |
36 | ||
37 | Returns the current working directory. | |
38 | ||
39 | Re-implements the getcwd(3) (or getwd(3)) functions in Perl. | |
40 | ||
41 | =item cwd | |
42 | ||
43 | my $cwd = cwd(); | |
44 | ||
45 | The cwd() is the most natural form for the current architecture. For | |
46 | most systems it is identical to `pwd` (but without the trailing line | |
47 | terminator). | |
48 | ||
04929354 MS |
49 | =item fastcwd |
50 | ||
51 | my $cwd = fastcwd(); | |
52 | ||
53 | A more dangerous version of getcwd(), but potentially faster. | |
54 | ||
55 | It might conceivably chdir() you out of a directory that it can't | |
56 | chdir() you back into. If fastcwd encounters a problem it will return | |
57 | undef but will probably leave you in a different directory. For a | |
58 | measure of extra security, if everything appears to have worked, the | |
59 | fastcwd() function will check that it leaves you in the same directory | |
60 | that it started in. If it has changed it will C<die> with the message | |
61 | "Unstable directory path, current directory changed | |
62 | unexpectedly". That should never happen. | |
63 | ||
64 | =item fastgetcwd | |
65 | ||
66 | my $cwd = fastgetcwd(); | |
f06db76b | 67 | |
902bacac | 68 | The fastgetcwd() function is provided as a synonym for cwd(). |
fb73857a | 69 | |
04929354 MS |
70 | =back |
71 | ||
902bacac | 72 | |
04929354 MS |
73 | =head2 abs_path and friends |
74 | ||
75 | These functions are exported only on request. They each take a single | |
3ee63918 MS |
76 | argument and return the absolute pathname for it. If no argument is |
77 | given they'll use the current working directory. | |
04929354 MS |
78 | |
79 | =over 4 | |
80 | ||
81 | =item abs_path | |
82 | ||
83 | my $abs_path = abs_path($file); | |
84 | ||
85 | Uses the same algorithm as getcwd(). Symbolic links and relative-path | |
86 | components ("." and "..") are resolved to return the canonical | |
87 | pathname, just like realpath(3). | |
88 | ||
89 | =item realpath | |
90 | ||
91 | my $abs_path = realpath($file); | |
92 | ||
93 | A synonym for abs_path(). | |
94 | ||
95 | =item fast_abs_path | |
96 | ||
510179aa | 97 | my $abs_path = fast_abs_path($file); |
04929354 MS |
98 | |
99 | A more dangerous, but potentially faster version of abs_path. | |
100 | ||
101 | =back | |
102 | ||
103 | =head2 $ENV{PWD} | |
104 | ||
105 | If you ask to override your chdir() built-in function, | |
106 | ||
107 | use Cwd qw(chdir); | |
108 | ||
109 | then your PWD environment variable will be kept up to date. Note that | |
110 | it will only be kept up to date if all packages which use chdir import | |
111 | it from Cwd. | |
4633a7c4 | 112 | |
4633a7c4 | 113 | |
4d6b4052 JH |
114 | =head1 NOTES |
115 | ||
116 | =over 4 | |
117 | ||
118 | =item * | |
119 | ||
04929354 MS |
120 | Since the path seperators are different on some operating systems ('/' |
121 | on Unix, ':' on MacPerl, etc...) we recommend you use the File::Spec | |
122 | modules wherever portability is a concern. | |
123 | ||
04929354 | 124 | =item * |
4d6b4052 JH |
125 | |
126 | Actually, on Mac OS, the C<getcwd()>, C<fastgetcwd()> and C<fastcwd()> | |
127 | functions are all aliases for the C<cwd()> function, which, on Mac OS, | |
128 | calls `pwd`. Likewise, the C<abs_path()> function is an alias for | |
129 | C<fast_abs_path()>. | |
130 | ||
131 | =back | |
132 | ||
04929354 MS |
133 | =head1 SEE ALSO |
134 | ||
135 | L<File::chdir> | |
136 | ||
f06db76b AD |
137 | =cut |
138 | ||
b060a406 | 139 | use strict; |
96e4d5b1 | 140 | |
3ee63918 | 141 | our $VERSION = '2.08'; |
96e4d5b1 | 142 | |
b060a406 TJ |
143 | use base qw/ Exporter /; |
144 | our @EXPORT = qw(cwd getcwd fastcwd fastgetcwd); | |
145 | our @EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath); | |
a0d0e21e | 146 | |
f5f423e4 IZ |
147 | # sys_cwd may keep the builtin command |
148 | ||
149 | # All the functionality of this module may provided by builtins, | |
150 | # there is no sense to process the rest of the file. | |
151 | # The best choice may be to have this in BEGIN, but how to return from BEGIN? | |
152 | ||
153 | if ($^O eq 'os2' && defined &sys_cwd && defined &sys_abspath) { | |
154 | local $^W = 0; | |
155 | *cwd = \&sys_cwd; | |
156 | *getcwd = \&cwd; | |
157 | *fastgetcwd = \&cwd; | |
158 | *fastcwd = \&cwd; | |
159 | *abs_path = \&sys_abspath; | |
160 | *fast_abs_path = \&abs_path; | |
161 | *realpath = \&abs_path; | |
162 | *fast_realpath = \&abs_path; | |
163 | return 1; | |
164 | } | |
165 | ||
f22d8e4b DM |
166 | eval { |
167 | require XSLoader; | |
46ba3155 | 168 | local $^W = 0; |
f22d8e4b DM |
169 | XSLoader::load('Cwd'); |
170 | }; | |
4633a7c4 | 171 | |
96e4d5b1 | 172 | |
3547aa9a MS |
173 | # Find the pwd command in the expected locations. We assume these |
174 | # are safe. This prevents _backtick_pwd() consulting $ENV{PATH} | |
175 | # so everything works under taint mode. | |
176 | my $pwd_cmd; | |
177 | foreach my $try (qw(/bin/pwd /usr/bin/pwd)) { | |
178 | if( -x $try ) { | |
179 | $pwd_cmd = $try; | |
180 | last; | |
181 | } | |
182 | } | |
522b859a JH |
183 | unless ($pwd_cmd) { |
184 | if (-x '/QOpenSys/bin/pwd') { # OS/400 PASE. | |
185 | $pwd_cmd = '/QOpenSys/bin/pwd' ; | |
186 | } else { | |
187 | # Isn't this wrong? _backtick_pwd() will fail if somenone has | |
188 | # pwd in their path but it is not /bin/pwd or /usr/bin/pwd? | |
189 | # See [perl #16774]. --jhi | |
190 | $pwd_cmd = 'pwd'; | |
191 | } | |
192 | } | |
3547aa9a MS |
193 | |
194 | # The 'natural and safe form' for UNIX (pwd may be setuid root) | |
8b88ae92 | 195 | sub _backtick_pwd { |
db281859 | 196 | local @ENV{qw(PATH IFS CDPATH ENV BASH_ENV)}; |
3547aa9a | 197 | my $cwd = `$pwd_cmd`; |
ac3b20cb | 198 | # Belt-and-suspenders in case someone said "undef $/". |
5cf6da5f | 199 | local $/ = "\n"; |
ac3b20cb | 200 | # `pwd` may fail e.g. if the disk is full |
7e03f963 | 201 | chomp($cwd) if defined $cwd; |
4633a7c4 | 202 | $cwd; |
8b88ae92 | 203 | } |
4633a7c4 LW |
204 | |
205 | # Since some ports may predefine cwd internally (e.g., NT) | |
206 | # we take care not to override an existing definition for cwd(). | |
207 | ||
ea54c8bd EC |
208 | unless(defined &cwd) { |
209 | # The pwd command is not available in some chroot(2)'ed environments | |
73b801a6 MS |
210 | if( $^O eq 'MacOS' || (defined $ENV{PATH} && |
211 | grep { -x "$_/pwd" } split(':', $ENV{PATH})) ) | |
212 | { | |
ea54c8bd EC |
213 | *cwd = \&_backtick_pwd; |
214 | } | |
215 | else { | |
216 | *cwd = \&getcwd; | |
217 | } | |
218 | } | |
a0d0e21e | 219 | |
1f4f94f5 RS |
220 | # set a reasonable (and very safe) default for fastgetcwd, in case it |
221 | # isn't redefined later (20001212 rspier) | |
222 | *fastgetcwd = \&cwd; | |
748a9306 | 223 | |
a0d0e21e LW |
224 | # By Brandon S. Allbery |
225 | # | |
226 | # Usage: $cwd = getcwd(); | |
227 | ||
228 | sub getcwd | |
229 | { | |
07569ed3 | 230 | abs_path('.'); |
a0d0e21e LW |
231 | } |
232 | ||
a0c9c202 JH |
233 | |
234 | # By John Bazik | |
235 | # | |
236 | # Usage: $cwd = &fastcwd; | |
237 | # | |
238 | # This is a faster version of getcwd. It's also more dangerous because | |
239 | # you might chdir out of a directory that you can't chdir back into. | |
240 | ||
241 | sub fastcwd { | |
242 | my($odev, $oino, $cdev, $cino, $tdev, $tino); | |
243 | my(@path, $path); | |
244 | local(*DIR); | |
245 | ||
246 | my($orig_cdev, $orig_cino) = stat('.'); | |
247 | ($cdev, $cino) = ($orig_cdev, $orig_cino); | |
248 | for (;;) { | |
249 | my $direntry; | |
250 | ($odev, $oino) = ($cdev, $cino); | |
251 | CORE::chdir('..') || return undef; | |
252 | ($cdev, $cino) = stat('.'); | |
253 | last if $odev == $cdev && $oino == $cino; | |
254 | opendir(DIR, '.') || return undef; | |
255 | for (;;) { | |
256 | $direntry = readdir(DIR); | |
257 | last unless defined $direntry; | |
258 | next if $direntry eq '.'; | |
259 | next if $direntry eq '..'; | |
260 | ||
261 | ($tdev, $tino) = lstat($direntry); | |
262 | last unless $tdev != $odev || $tino != $oino; | |
263 | } | |
264 | closedir(DIR); | |
265 | return undef unless defined $direntry; # should never happen | |
266 | unshift(@path, $direntry); | |
267 | } | |
268 | $path = '/' . join('/', @path); | |
269 | if ($^O eq 'apollo') { $path = "/".$path; } | |
270 | # At this point $path may be tainted (if tainting) and chdir would fail. | |
248785eb RGS |
271 | # Untaint it then check that we landed where we started. |
272 | $path =~ /^(.*)\z/s # untaint | |
273 | && CORE::chdir($1) or return undef; | |
a0c9c202 JH |
274 | ($cdev, $cino) = stat('.'); |
275 | die "Unstable directory path, current directory changed unexpectedly" | |
276 | if $cdev != $orig_cdev || $cino != $orig_cino; | |
277 | $path; | |
278 | } | |
279 | ||
280 | ||
4633a7c4 | 281 | # Keeps track of current working directory in PWD environment var |
a0d0e21e LW |
282 | # Usage: |
283 | # use Cwd 'chdir'; | |
284 | # chdir $newdir; | |
285 | ||
4633a7c4 | 286 | my $chdir_init = 0; |
a0d0e21e | 287 | |
4633a7c4 | 288 | sub chdir_init { |
3b8e3443 | 289 | if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos' and $^O ne 'MSWin32') { |
a0d0e21e LW |
290 | my($dd,$di) = stat('.'); |
291 | my($pd,$pi) = stat($ENV{'PWD'}); | |
292 | if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) { | |
4633a7c4 | 293 | $ENV{'PWD'} = cwd(); |
a0d0e21e LW |
294 | } |
295 | } | |
296 | else { | |
3b8e3443 GS |
297 | my $wd = cwd(); |
298 | $wd = Win32::GetFullPathName($wd) if $^O eq 'MSWin32'; | |
299 | $ENV{'PWD'} = $wd; | |
a0d0e21e | 300 | } |
4633a7c4 | 301 | # Strip an automounter prefix (where /tmp_mnt/foo/bar == /foo/bar) |
3b8e3443 | 302 | if ($^O ne 'MSWin32' and $ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) { |
a0d0e21e LW |
303 | my($pd,$pi) = stat($2); |
304 | my($dd,$di) = stat($1); | |
305 | if (defined $pd and defined $dd and $di == $pi and $dd == $pd) { | |
306 | $ENV{'PWD'}="$2$3"; | |
307 | } | |
308 | } | |
309 | $chdir_init = 1; | |
310 | } | |
311 | ||
312 | sub chdir { | |
22978713 | 313 | my $newdir = @_ ? shift : ''; # allow for no arg (chdir to HOME dir) |
3b8e3443 | 314 | $newdir =~ s|///*|/|g unless $^O eq 'MSWin32'; |
a0d0e21e | 315 | chdir_init() unless $chdir_init; |
4ffa1610 JH |
316 | my $newpwd; |
317 | if ($^O eq 'MSWin32') { | |
318 | # get the full path name *before* the chdir() | |
319 | $newpwd = Win32::GetFullPathName($newdir); | |
320 | } | |
321 | ||
4633a7c4 | 322 | return 0 unless CORE::chdir $newdir; |
4ffa1610 | 323 | |
3b8e3443 GS |
324 | if ($^O eq 'VMS') { |
325 | return $ENV{'PWD'} = $ENV{'DEFAULT'} | |
326 | } | |
4aecb5b5 JH |
327 | elsif ($^O eq 'MacOS') { |
328 | return $ENV{'PWD'} = cwd(); | |
329 | } | |
3b8e3443 | 330 | elsif ($^O eq 'MSWin32') { |
4ffa1610 | 331 | $ENV{'PWD'} = $newpwd; |
3b8e3443 GS |
332 | return 1; |
333 | } | |
748a9306 | 334 | |
392d8ab8 | 335 | if ($newdir =~ m#^/#s) { |
a0d0e21e | 336 | $ENV{'PWD'} = $newdir; |
4633a7c4 LW |
337 | } else { |
338 | my @curdir = split(m#/#,$ENV{'PWD'}); | |
339 | @curdir = ('') unless @curdir; | |
340 | my $component; | |
a0d0e21e LW |
341 | foreach $component (split(m#/#, $newdir)) { |
342 | next if $component eq '.'; | |
343 | pop(@curdir),next if $component eq '..'; | |
344 | push(@curdir,$component); | |
345 | } | |
346 | $ENV{'PWD'} = join('/',@curdir) || '/'; | |
347 | } | |
4633a7c4 | 348 | 1; |
a0d0e21e LW |
349 | } |
350 | ||
a0c9c202 JH |
351 | |
352 | # In case the XS version doesn't load. | |
353 | *abs_path = \&_perl_abs_path unless defined &abs_path; | |
354 | sub _perl_abs_path | |
355 | { | |
356 | my $start = @_ ? shift : '.'; | |
357 | my($dotdots, $cwd, @pst, @cst, $dir, @tst); | |
358 | ||
359 | unless (@cst = stat( $start )) | |
360 | { | |
e2ba406b T |
361 | require Carp; |
362 | Carp::carp ("stat($start): $!"); | |
a0c9c202 JH |
363 | return ''; |
364 | } | |
365 | $cwd = ''; | |
366 | $dotdots = $start; | |
367 | do | |
368 | { | |
369 | $dotdots .= '/..'; | |
370 | @pst = @cst; | |
a25ef67d | 371 | local *PARENT; |
a0c9c202 JH |
372 | unless (opendir(PARENT, $dotdots)) |
373 | { | |
e2ba406b T |
374 | require Carp; |
375 | Carp::carp ("opendir($dotdots): $!"); | |
a0c9c202 JH |
376 | return ''; |
377 | } | |
378 | unless (@cst = stat($dotdots)) | |
379 | { | |
e2ba406b T |
380 | require Carp; |
381 | Carp::carp ("stat($dotdots): $!"); | |
a0c9c202 JH |
382 | closedir(PARENT); |
383 | return ''; | |
384 | } | |
385 | if ($pst[0] == $cst[0] && $pst[1] == $cst[1]) | |
386 | { | |
387 | $dir = undef; | |
388 | } | |
389 | else | |
390 | { | |
391 | do | |
392 | { | |
393 | unless (defined ($dir = readdir(PARENT))) | |
394 | { | |
e2ba406b T |
395 | require Carp; |
396 | Carp::carp ("readdir($dotdots): $!"); | |
a0c9c202 JH |
397 | closedir(PARENT); |
398 | return ''; | |
399 | } | |
400 | $tst[0] = $pst[0]+1 unless (@tst = lstat("$dotdots/$dir")) | |
401 | } | |
402 | while ($dir eq '.' || $dir eq '..' || $tst[0] != $pst[0] || | |
403 | $tst[1] != $pst[1]); | |
404 | } | |
405 | $cwd = (defined $dir ? "$dir" : "" ) . "/$cwd" ; | |
406 | closedir(PARENT); | |
407 | } while (defined $dir); | |
408 | chop($cwd) unless $cwd eq '/'; # drop the trailing / | |
409 | $cwd; | |
410 | } | |
411 | ||
412 | ||
e4c51978 GS |
413 | # added function alias for those of us more |
414 | # used to the libc function. --tchrist 27-Jan-00 | |
415 | *realpath = \&abs_path; | |
416 | ||
3ee63918 | 417 | my $Curdir; |
96e4d5b1 | 418 | sub fast_abs_path { |
419 | my $cwd = getcwd(); | |
4d6b4052 | 420 | require File::Spec; |
3ee63918 MS |
421 | my $path = @_ ? shift : ($Curdir ||= File::Spec->curdir); |
422 | ||
423 | # Detaint else we'll explode in taint mode. This is safe because | |
424 | # we're not doing anything dangerous with it. | |
425 | ($path) = $path =~ /(.*)/; | |
426 | ($cwd) = $cwd =~ /(.*)/; | |
427 | ||
e2ba406b T |
428 | if (!CORE::chdir($path)) { |
429 | require Carp; | |
430 | Carp::croak ("Cannot chdir to $path: $!"); | |
431 | } | |
96e4d5b1 | 432 | my $realpath = getcwd(); |
e2ba406b T |
433 | if (! ((-d $cwd) && (CORE::chdir($cwd)))) { |
434 | require Carp; | |
435 | Carp::croak ("Cannot chdir back to $cwd: $!"); | |
436 | } | |
96e4d5b1 | 437 | $realpath; |
8b88ae92 NIS |
438 | } |
439 | ||
e4c51978 GS |
440 | # added function alias to follow principle of least surprise |
441 | # based on previous aliasing. --tchrist 27-Jan-00 | |
442 | *fast_realpath = \&fast_abs_path; | |
443 | ||
4633a7c4 LW |
444 | |
445 | # --- PORTING SECTION --- | |
446 | ||
447 | # VMS: $ENV{'DEFAULT'} points to default directory at all times | |
bd3fa61c | 448 | # 06-Mar-1996 Charles Bailey bailey@newman.upenn.edu |
c6538b72 | 449 | # Note: Use of Cwd::chdir() causes the logical name PWD to be defined |
8b88ae92 NIS |
450 | # in the process logical name table as the default device and directory |
451 | # seen by Perl. This may not be the same as the default device | |
4633a7c4 LW |
452 | # and directory seen by DCL after Perl exits, since the effects |
453 | # the CRTL chdir() function persist only until Perl exits. | |
4633a7c4 LW |
454 | |
455 | sub _vms_cwd { | |
96e4d5b1 | 456 | return $ENV{'DEFAULT'}; |
457 | } | |
458 | ||
459 | sub _vms_abs_path { | |
460 | return $ENV{'DEFAULT'} unless @_; | |
461 | my $path = VMS::Filespec::pathify($_[0]); | |
e2ba406b T |
462 | if (! defined $path) |
463 | { | |
464 | require Carp; | |
465 | Carp::croak("Invalid path name $_[0]") | |
466 | } | |
96e4d5b1 | 467 | return VMS::Filespec::rmsexpand($path); |
4633a7c4 | 468 | } |
68dc0745 | 469 | |
4633a7c4 LW |
470 | sub _os2_cwd { |
471 | $ENV{'PWD'} = `cmd /c cd`; | |
39741d73 | 472 | chomp $ENV{'PWD'}; |
aa6b7957 | 473 | $ENV{'PWD'} =~ s:\\:/:g ; |
4633a7c4 LW |
474 | return $ENV{'PWD'}; |
475 | } | |
476 | ||
96e4d5b1 | 477 | sub _win32_cwd { |
2d7a9237 | 478 | $ENV{'PWD'} = Win32::GetCwd(); |
aa6b7957 | 479 | $ENV{'PWD'} =~ s:\\:/:g ; |
96e4d5b1 | 480 | return $ENV{'PWD'}; |
481 | } | |
482 | ||
483 | *_NT_cwd = \&_win32_cwd if (!defined &_NT_cwd && | |
2d7a9237 | 484 | defined &Win32::GetCwd); |
96e4d5b1 | 485 | |
486 | *_NT_cwd = \&_os2_cwd unless defined &_NT_cwd; | |
68dc0745 | 487 | |
39e571d4 LM |
488 | sub _dos_cwd { |
489 | if (!defined &Dos::GetCwd) { | |
490 | $ENV{'PWD'} = `command /c cd`; | |
39741d73 | 491 | chomp $ENV{'PWD'}; |
aa6b7957 | 492 | $ENV{'PWD'} =~ s:\\:/:g ; |
39e571d4 LM |
493 | } else { |
494 | $ENV{'PWD'} = Dos::GetCwd(); | |
495 | } | |
55497cff | 496 | return $ENV{'PWD'}; |
497 | } | |
498 | ||
7fbf1995 | 499 | sub _qnx_cwd { |
35b807ef NA |
500 | local $ENV{PATH} = ''; |
501 | local $ENV{CDPATH} = ''; | |
502 | local $ENV{ENV} = ''; | |
7fbf1995 | 503 | $ENV{'PWD'} = `/usr/bin/fullpath -t`; |
39741d73 | 504 | chomp $ENV{'PWD'}; |
7fbf1995 NA |
505 | return $ENV{'PWD'}; |
506 | } | |
507 | ||
508 | sub _qnx_abs_path { | |
35b807ef NA |
509 | local $ENV{PATH} = ''; |
510 | local $ENV{CDPATH} = ''; | |
511 | local $ENV{ENV} = ''; | |
fa921dc6 | 512 | my $path = @_ ? shift : '.'; |
39741d73 MS |
513 | local *REALPATH; |
514 | ||
515 | open(REALPATH, '-|', '/usr/bin/fullpath', '-t', $path) or | |
516 | die "Can't open /usr/bin/fullpath: $!"; | |
517 | my $realpath = <REALPATH>; | |
518 | close REALPATH; | |
519 | chomp $realpath; | |
7fbf1995 NA |
520 | return $realpath; |
521 | } | |
522 | ||
ed79a026 OF |
523 | sub _epoc_cwd { |
524 | $ENV{'PWD'} = EPOC::getcwd(); | |
525 | return $ENV{'PWD'}; | |
526 | } | |
527 | ||
ac1ad7f0 | 528 | { |
db376a24 | 529 | no warnings; # assignments trigger 'subroutine redefined' warning |
4633a7c4 | 530 | |
ac1ad7f0 | 531 | if ($^O eq 'VMS') { |
96e4d5b1 | 532 | *cwd = \&_vms_cwd; |
533 | *getcwd = \&_vms_cwd; | |
534 | *fastcwd = \&_vms_cwd; | |
535 | *fastgetcwd = \&_vms_cwd; | |
536 | *abs_path = \&_vms_abs_path; | |
537 | *fast_abs_path = \&_vms_abs_path; | |
ac1ad7f0 PM |
538 | } |
539 | elsif ($^O eq 'NT' or $^O eq 'MSWin32') { | |
540 | # We assume that &_NT_cwd is defined as an XSUB or in the core. | |
96e4d5b1 | 541 | *cwd = \&_NT_cwd; |
542 | *getcwd = \&_NT_cwd; | |
543 | *fastcwd = \&_NT_cwd; | |
544 | *fastgetcwd = \&_NT_cwd; | |
545 | *abs_path = \&fast_abs_path; | |
cade0c02 | 546 | *realpath = \&fast_abs_path; |
ac1ad7f0 PM |
547 | } |
548 | elsif ($^O eq 'os2') { | |
549 | # sys_cwd may keep the builtin command | |
96e4d5b1 | 550 | *cwd = defined &sys_cwd ? \&sys_cwd : \&_os2_cwd; |
551 | *getcwd = \&cwd; | |
552 | *fastgetcwd = \&cwd; | |
553 | *fastcwd = \&cwd; | |
554 | *abs_path = \&fast_abs_path; | |
ac1ad7f0 | 555 | } |
39e571d4 LM |
556 | elsif ($^O eq 'dos') { |
557 | *cwd = \&_dos_cwd; | |
558 | *getcwd = \&_dos_cwd; | |
559 | *fastgetcwd = \&_dos_cwd; | |
560 | *fastcwd = \&_dos_cwd; | |
96e4d5b1 | 561 | *abs_path = \&fast_abs_path; |
ac1ad7f0 | 562 | } |
7438b6ad | 563 | elsif ($^O =~ m/^(?:qnx|nto)$/ ) { |
7fbf1995 NA |
564 | *cwd = \&_qnx_cwd; |
565 | *getcwd = \&_qnx_cwd; | |
566 | *fastgetcwd = \&_qnx_cwd; | |
567 | *fastcwd = \&_qnx_cwd; | |
568 | *abs_path = \&_qnx_abs_path; | |
569 | *fast_abs_path = \&_qnx_abs_path; | |
570 | } | |
4fabb596 | 571 | elsif ($^O eq 'cygwin') { |
1cab015a EF |
572 | *getcwd = \&cwd; |
573 | *fastgetcwd = \&cwd; | |
574 | *fastcwd = \&cwd; | |
575 | *abs_path = \&fast_abs_path; | |
576 | } | |
ed79a026 | 577 | elsif ($^O eq 'epoc') { |
fa6a1c44 OF |
578 | *cwd = \&_epoc_cwd; |
579 | *getcwd = \&_epoc_cwd; | |
ed79a026 OF |
580 | *fastgetcwd = \&_epoc_cwd; |
581 | *fastcwd = \&_epoc_cwd; | |
582 | *abs_path = \&fast_abs_path; | |
583 | } | |
4aecb5b5 JH |
584 | elsif ($^O eq 'MacOS') { |
585 | *getcwd = \&cwd; | |
586 | *fastgetcwd = \&cwd; | |
587 | *fastcwd = \&cwd; | |
588 | *abs_path = \&fast_abs_path; | |
589 | } | |
55497cff | 590 | } |
4633a7c4 | 591 | |
4633a7c4 | 592 | |
a0d0e21e | 593 | 1; |