File | /opt/wise/lib/perl5/5.10.0/x86_64-linux-thread-multi/Cwd.pm | Statements Executed | 91 | Total Time | 0.003931 seconds |
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Inclusive Time |
Subroutine | |
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3 | 1 | 1 | 0.00039 | 0.00044 | Cwd:: | fast_abs_path |
6 | 3 | 3 | 9.7e-5 | 9.7e-5 | Cwd:: | fastcwd (xsub) |
8 | 3 | 3 | 6.3e-5 | 6.3e-5 | Cwd:: | getcwd (xsub) |
0 | 0 | 0 | 0 | 0 | Cwd:: | BEGIN |
0 | 0 | 0 | 0 | 0 | Cwd:: | __ANON__[:365] |
0 | 0 | 0 | 0 | 0 | Cwd:: | _backtick_pwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _carp |
0 | 0 | 0 | 0 | 0 | Cwd:: | _croak |
0 | 0 | 0 | 0 | 0 | Cwd:: | _dos_cwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _epoc_cwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _os2_cwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _perl_abs_path |
0 | 0 | 0 | 0 | 0 | Cwd:: | _perl_getcwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _qnx_abs_path |
0 | 0 | 0 | 0 | 0 | Cwd:: | _qnx_cwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _vms_abs_path |
0 | 0 | 0 | 0 | 0 | Cwd:: | _vms_cwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | _win32_cwd |
0 | 0 | 0 | 0 | 0 | Cwd:: | chdir |
0 | 0 | 0 | 0 | 0 | Cwd:: | chdir_init |
0 | 0 | 0 | 0 | 0 | Cwd:: | fastcwd_ |
Line | Stmts. | Exclusive Time | Avg. | Code |
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1 | package Cwd; | |||
2 | ||||
3 | =head1 NAME | |||
4 | ||||
5 | Cwd - get pathname of current working directory | |||
6 | ||||
7 | =head1 SYNOPSIS | |||
8 | ||||
9 | use Cwd; | |||
10 | my $dir = getcwd; | |||
11 | ||||
12 | use Cwd 'abs_path'; | |||
13 | my $abs_path = abs_path($file); | |||
14 | ||||
15 | =head1 DESCRIPTION | |||
16 | ||||
17 | This module provides functions for determining the pathname of the | |||
18 | current working directory. It is recommended that getcwd (or another | |||
19 | *cwd() function) be used in I<all> code to ensure portability. | |||
20 | ||||
21 | By default, it exports the functions cwd(), getcwd(), fastcwd(), and | |||
22 | fastgetcwd() (and, on Win32, getdcwd()) into the caller's namespace. | |||
23 | ||||
24 | ||||
25 | =head2 getcwd and friends | |||
26 | ||||
27 | Each of these functions are called without arguments and return the | |||
28 | absolute path of the current working directory. | |||
29 | ||||
30 | =over 4 | |||
31 | ||||
32 | =item getcwd | |||
33 | ||||
34 | my $cwd = getcwd(); | |||
35 | ||||
36 | Returns the current working directory. | |||
37 | ||||
38 | Exposes the POSIX function getcwd(3) or re-implements it if it's not | |||
39 | available. | |||
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 | ||||
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(); | |||
67 | ||||
68 | The fastgetcwd() function is provided as a synonym for cwd(). | |||
69 | ||||
70 | =item getdcwd | |||
71 | ||||
72 | my $cwd = getdcwd(); | |||
73 | my $cwd = getdcwd('C:'); | |||
74 | ||||
75 | The getdcwd() function is also provided on Win32 to get the current working | |||
76 | directory on the specified drive, since Windows maintains a separate current | |||
77 | working directory for each drive. If no drive is specified then the current | |||
78 | drive is assumed. | |||
79 | ||||
80 | This function simply calls the Microsoft C library _getdcwd() function. | |||
81 | ||||
82 | =back | |||
83 | ||||
84 | ||||
85 | =head2 abs_path and friends | |||
86 | ||||
87 | These functions are exported only on request. They each take a single | |||
88 | argument and return the absolute pathname for it. If no argument is | |||
89 | given they'll use the current working directory. | |||
90 | ||||
91 | =over 4 | |||
92 | ||||
93 | =item abs_path | |||
94 | ||||
95 | my $abs_path = abs_path($file); | |||
96 | ||||
97 | Uses the same algorithm as getcwd(). Symbolic links and relative-path | |||
98 | components ("." and "..") are resolved to return the canonical | |||
99 | pathname, just like realpath(3). | |||
100 | ||||
101 | =item realpath | |||
102 | ||||
103 | my $abs_path = realpath($file); | |||
104 | ||||
105 | A synonym for abs_path(). | |||
106 | ||||
107 | =item fast_abs_path | |||
108 | ||||
109 | my $abs_path = fast_abs_path($file); | |||
110 | ||||
111 | A more dangerous, but potentially faster version of abs_path. | |||
112 | ||||
113 | =back | |||
114 | ||||
115 | =head2 $ENV{PWD} | |||
116 | ||||
117 | If you ask to override your chdir() built-in function, | |||
118 | ||||
119 | use Cwd qw(chdir); | |||
120 | ||||
121 | then your PWD environment variable will be kept up to date. Note that | |||
122 | it will only be kept up to date if all packages which use chdir import | |||
123 | it from Cwd. | |||
124 | ||||
125 | ||||
126 | =head1 NOTES | |||
127 | ||||
128 | =over 4 | |||
129 | ||||
130 | =item * | |||
131 | ||||
132 | Since the path seperators are different on some operating systems ('/' | |||
133 | on Unix, ':' on MacPerl, etc...) we recommend you use the File::Spec | |||
134 | modules wherever portability is a concern. | |||
135 | ||||
136 | =item * | |||
137 | ||||
138 | Actually, on Mac OS, the C<getcwd()>, C<fastgetcwd()> and C<fastcwd()> | |||
139 | functions are all aliases for the C<cwd()> function, which, on Mac OS, | |||
140 | calls `pwd`. Likewise, the C<abs_path()> function is an alias for | |||
141 | C<fast_abs_path()>. | |||
142 | ||||
143 | =back | |||
144 | ||||
145 | =head1 AUTHOR | |||
146 | ||||
147 | Originally by the perl5-porters. | |||
148 | ||||
149 | Maintained by Ken Williams <KWILLIAMS@cpan.org> | |||
150 | ||||
151 | =head1 COPYRIGHT | |||
152 | ||||
153 | Copyright (c) 2004 by the Perl 5 Porters. All rights reserved. | |||
154 | ||||
155 | This program is free software; you can redistribute it and/or modify | |||
156 | it under the same terms as Perl itself. | |||
157 | ||||
158 | Portions of the C code in this library are copyright (c) 1994 by the | |||
159 | Regents of the University of California. All rights reserved. The | |||
160 | license on this code is compatible with the licensing of the rest of | |||
161 | the distribution - please see the source code in F<Cwd.xs> for the | |||
162 | details. | |||
163 | ||||
164 | =head1 SEE ALSO | |||
165 | ||||
166 | L<File::chdir> | |||
167 | ||||
168 | =cut | |||
169 | ||||
170 | 3 | 2.6e-5 | 8.7e-6 | use strict; # spent 8µs making 1 call to strict::import |
171 | 3 | 3.3e-5 | 1.1e-5 | use Exporter; # spent 34µs making 1 call to Exporter::import |
172 | 3 | 0.00281 | 0.00094 | use vars qw(@ISA @EXPORT @EXPORT_OK $VERSION); # spent 82µs making 1 call to vars::import |
173 | ||||
174 | 1 | 1.0e-6 | 1.0e-6 | $VERSION = '3.2501'; |
175 | ||||
176 | 1 | 7.0e-6 | 7.0e-6 | @ISA = qw/ Exporter /; |
177 | 1 | 1.0e-6 | 1.0e-6 | @EXPORT = qw(cwd getcwd fastcwd fastgetcwd); |
178 | 1 | 2.0e-6 | 2.0e-6 | push @EXPORT, qw(getdcwd) if $^O eq 'MSWin32'; |
179 | 1 | 2.0e-6 | 2.0e-6 | @EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath); |
180 | ||||
181 | # sys_cwd may keep the builtin command | |||
182 | ||||
183 | # All the functionality of this module may provided by builtins, | |||
184 | # there is no sense to process the rest of the file. | |||
185 | # The best choice may be to have this in BEGIN, but how to return from BEGIN? | |||
186 | ||||
187 | 1 | 0 | 0 | if ($^O eq 'os2') { |
188 | local $^W = 0; | |||
189 | ||||
190 | *cwd = defined &sys_cwd ? \&sys_cwd : \&_os2_cwd; | |||
191 | *getcwd = \&cwd; | |||
192 | *fastgetcwd = \&cwd; | |||
193 | *fastcwd = \&cwd; | |||
194 | ||||
195 | *fast_abs_path = \&sys_abspath if defined &sys_abspath; | |||
196 | *abs_path = \&fast_abs_path; | |||
197 | *realpath = \&fast_abs_path; | |||
198 | *fast_realpath = \&fast_abs_path; | |||
199 | ||||
200 | return 1; | |||
201 | } | |||
202 | ||||
203 | # If loading the XS stuff doesn't work, we can fall back to pure perl | |||
204 | 2 | 4.0e-6 | 2.0e-6 | eval { |
205 | 2 | 0.00029 | 0.00015 | if ( $] >= 5.006 ) { |
206 | require XSLoader; | |||
207 | XSLoader::load( __PACKAGE__, $VERSION ); # spent 287µs making 1 call to XSLoader::load | |||
208 | } else { | |||
209 | require DynaLoader; | |||
210 | push @ISA, 'DynaLoader'; | |||
211 | __PACKAGE__->bootstrap( $VERSION ); | |||
212 | } | |||
213 | }; | |||
214 | ||||
215 | # Must be after the DynaLoader stuff: | |||
216 | 1 | 3.7e-5 | 3.7e-5 | $VERSION = eval $VERSION; |
217 | ||||
218 | # Big nasty table of function aliases | |||
219 | 1 | 1.8e-5 | 1.8e-5 | my %METHOD_MAP = |
220 | ( | |||
221 | VMS => | |||
222 | { | |||
223 | cwd => '_vms_cwd', | |||
224 | getcwd => '_vms_cwd', | |||
225 | fastcwd => '_vms_cwd', | |||
226 | fastgetcwd => '_vms_cwd', | |||
227 | abs_path => '_vms_abs_path', | |||
228 | fast_abs_path => '_vms_abs_path', | |||
229 | }, | |||
230 | ||||
231 | MSWin32 => | |||
232 | { | |||
233 | # We assume that &_NT_cwd is defined as an XSUB or in the core. | |||
234 | cwd => '_NT_cwd', | |||
235 | getcwd => '_NT_cwd', | |||
236 | fastcwd => '_NT_cwd', | |||
237 | fastgetcwd => '_NT_cwd', | |||
238 | abs_path => 'fast_abs_path', | |||
239 | realpath => 'fast_abs_path', | |||
240 | }, | |||
241 | ||||
242 | dos => | |||
243 | { | |||
244 | cwd => '_dos_cwd', | |||
245 | getcwd => '_dos_cwd', | |||
246 | fastgetcwd => '_dos_cwd', | |||
247 | fastcwd => '_dos_cwd', | |||
248 | abs_path => 'fast_abs_path', | |||
249 | }, | |||
250 | ||||
251 | qnx => | |||
252 | { | |||
253 | cwd => '_qnx_cwd', | |||
254 | getcwd => '_qnx_cwd', | |||
255 | fastgetcwd => '_qnx_cwd', | |||
256 | fastcwd => '_qnx_cwd', | |||
257 | abs_path => '_qnx_abs_path', | |||
258 | fast_abs_path => '_qnx_abs_path', | |||
259 | }, | |||
260 | ||||
261 | cygwin => | |||
262 | { | |||
263 | getcwd => 'cwd', | |||
264 | fastgetcwd => 'cwd', | |||
265 | fastcwd => 'cwd', | |||
266 | abs_path => 'fast_abs_path', | |||
267 | realpath => 'fast_abs_path', | |||
268 | }, | |||
269 | ||||
270 | epoc => | |||
271 | { | |||
272 | cwd => '_epoc_cwd', | |||
273 | getcwd => '_epoc_cwd', | |||
274 | fastgetcwd => '_epoc_cwd', | |||
275 | fastcwd => '_epoc_cwd', | |||
276 | abs_path => 'fast_abs_path', | |||
277 | }, | |||
278 | ||||
279 | MacOS => | |||
280 | { | |||
281 | getcwd => 'cwd', | |||
282 | fastgetcwd => 'cwd', | |||
283 | fastcwd => 'cwd', | |||
284 | abs_path => 'fast_abs_path', | |||
285 | }, | |||
286 | ); | |||
287 | ||||
288 | 1 | 1.0e-6 | 1.0e-6 | $METHOD_MAP{NT} = $METHOD_MAP{MSWin32}; |
289 | 1 | 1.0e-6 | 1.0e-6 | $METHOD_MAP{nto} = $METHOD_MAP{qnx}; |
290 | ||||
291 | ||||
292 | # Find the pwd command in the expected locations. We assume these | |||
293 | # are safe. This prevents _backtick_pwd() consulting $ENV{PATH} | |||
294 | # so everything works under taint mode. | |||
295 | 1 | 1.0e-6 | 1.0e-6 | my $pwd_cmd; |
296 | 1 | 1.0e-6 | 1.0e-6 | foreach my $try ('/bin/pwd', |
297 | '/usr/bin/pwd', | |||
298 | '/QOpenSys/bin/pwd', # OS/400 PASE. | |||
299 | ) { | |||
300 | ||||
301 | 3 | 1.2e-5 | 4.0e-6 | if( -x $try ) { |
302 | $pwd_cmd = $try; | |||
303 | last; | |||
304 | } | |||
305 | } | |||
306 | 1 | 1.0e-6 | 1.0e-6 | my $found_pwd_cmd = defined($pwd_cmd); |
307 | 1 | 0 | 0 | unless ($pwd_cmd) { |
308 | # Isn't this wrong? _backtick_pwd() will fail if somenone has | |||
309 | # pwd in their path but it is not /bin/pwd or /usr/bin/pwd? | |||
310 | # See [perl #16774]. --jhi | |||
311 | $pwd_cmd = 'pwd'; | |||
312 | } | |||
313 | ||||
314 | # Lazy-load Carp | |||
315 | sub _carp { require Carp; Carp::carp(@_) } | |||
316 | sub _croak { require Carp; Carp::croak(@_) } | |||
317 | ||||
318 | # The 'natural and safe form' for UNIX (pwd may be setuid root) | |||
319 | sub _backtick_pwd { | |||
320 | # Localize %ENV entries in a way that won't create new hash keys | |||
321 | my @localize = grep exists $ENV{$_}, qw(PATH IFS CDPATH ENV BASH_ENV); | |||
322 | local @ENV{@localize}; | |||
323 | ||||
324 | my $cwd = `$pwd_cmd`; | |||
325 | # Belt-and-suspenders in case someone said "undef $/". | |||
326 | local $/ = "\n"; | |||
327 | # `pwd` may fail e.g. if the disk is full | |||
328 | chomp($cwd) if defined $cwd; | |||
329 | $cwd; | |||
330 | } | |||
331 | ||||
332 | # Since some ports may predefine cwd internally (e.g., NT) | |||
333 | # we take care not to override an existing definition for cwd(). | |||
334 | ||||
335 | 5 | 2.0e-5 | 4.0e-6 | unless ($METHOD_MAP{$^O}{cwd} or defined &cwd) { |
336 | # The pwd command is not available in some chroot(2)'ed environments | |||
337 | 1 | 3.0e-6 | 3.0e-6 | my $sep = $Config::Config{path_sep} || ':'; # spent 12µs making 1 call to Config::FETCH |
338 | my $os = $^O; # Protect $^O from tainting | |||
339 | ||||
340 | ||||
341 | # Try again to find a pwd, this time searching the whole PATH. | |||
342 | 2 | 3.6e-5 | 1.8e-5 | if (defined $ENV{PATH} and $os ne 'MSWin32') { # no pwd on Windows |
343 | my @candidates = split($sep, $ENV{PATH}); | |||
344 | while (!$found_pwd_cmd and @candidates) { | |||
345 | my $candidate = shift @candidates; | |||
346 | $found_pwd_cmd = 1 if -x "$candidate/pwd"; | |||
347 | } | |||
348 | } | |||
349 | ||||
350 | # MacOS has some special magic to make `pwd` work. | |||
351 | if( $os eq 'MacOS' || $found_pwd_cmd ) | |||
352 | { | |||
353 | *cwd = \&_backtick_pwd; | |||
354 | } | |||
355 | else { | |||
356 | *cwd = \&getcwd; | |||
357 | } | |||
358 | } | |||
359 | ||||
360 | 1 | 1.0e-6 | 1.0e-6 | if ($^O eq 'cygwin') { |
361 | # We need to make sure cwd() is called with no args, because it's | |||
362 | # got an arg-less prototype and will die if args are present. | |||
363 | local $^W = 0; | |||
364 | my $orig_cwd = \&cwd; | |||
365 | *cwd = sub { &$orig_cwd() } | |||
366 | } | |||
367 | ||||
368 | ||||
369 | # set a reasonable (and very safe) default for fastgetcwd, in case it | |||
370 | # isn't redefined later (20001212 rspier) | |||
371 | 1 | 1.0e-6 | 1.0e-6 | *fastgetcwd = \&cwd; |
372 | ||||
373 | # A non-XS version of getcwd() - also used to bootstrap the perl build | |||
374 | # process, when miniperl is running and no XS loading happens. | |||
375 | sub _perl_getcwd | |||
376 | { | |||
377 | abs_path('.'); | |||
378 | } | |||
379 | ||||
380 | # By John Bazik | |||
381 | # | |||
382 | # Usage: $cwd = &fastcwd; | |||
383 | # | |||
384 | # This is a faster version of getcwd. It's also more dangerous because | |||
385 | # you might chdir out of a directory that you can't chdir back into. | |||
386 | ||||
387 | sub fastcwd_ { | |||
388 | my($odev, $oino, $cdev, $cino, $tdev, $tino); | |||
389 | my(@path, $path); | |||
390 | local(*DIR); | |||
391 | ||||
392 | my($orig_cdev, $orig_cino) = stat('.'); | |||
393 | ($cdev, $cino) = ($orig_cdev, $orig_cino); | |||
394 | for (;;) { | |||
395 | my $direntry; | |||
396 | ($odev, $oino) = ($cdev, $cino); | |||
397 | CORE::chdir('..') || return undef; | |||
398 | ($cdev, $cino) = stat('.'); | |||
399 | last if $odev == $cdev && $oino == $cino; | |||
400 | opendir(DIR, '.') || return undef; | |||
401 | for (;;) { | |||
402 | $direntry = readdir(DIR); | |||
403 | last unless defined $direntry; | |||
404 | next if $direntry eq '.'; | |||
405 | next if $direntry eq '..'; | |||
406 | ||||
407 | ($tdev, $tino) = lstat($direntry); | |||
408 | last unless $tdev != $odev || $tino != $oino; | |||
409 | } | |||
410 | closedir(DIR); | |||
411 | return undef unless defined $direntry; # should never happen | |||
412 | unshift(@path, $direntry); | |||
413 | } | |||
414 | $path = '/' . join('/', @path); | |||
415 | if ($^O eq 'apollo') { $path = "/".$path; } | |||
416 | # At this point $path may be tainted (if tainting) and chdir would fail. | |||
417 | # Untaint it then check that we landed where we started. | |||
418 | $path =~ /^(.*)\z/s # untaint | |||
419 | && CORE::chdir($1) or return undef; | |||
420 | ($cdev, $cino) = stat('.'); | |||
421 | die "Unstable directory path, current directory changed unexpectedly" | |||
422 | if $cdev != $orig_cdev || $cino != $orig_cino; | |||
423 | $path; | |||
424 | } | |||
425 | 1 | 1.0e-6 | 1.0e-6 | if (not defined &fastcwd) { *fastcwd = \&fastcwd_ } |
426 | ||||
427 | ||||
428 | # Keeps track of current working directory in PWD environment var | |||
429 | # Usage: | |||
430 | # use Cwd 'chdir'; | |||
431 | # chdir $newdir; | |||
432 | ||||
433 | 1 | 1.0e-6 | 1.0e-6 | my $chdir_init = 0; |
434 | ||||
435 | sub chdir_init { | |||
436 | if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos' and $^O ne 'MSWin32') { | |||
437 | my($dd,$di) = stat('.'); | |||
438 | my($pd,$pi) = stat($ENV{'PWD'}); | |||
439 | if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) { | |||
440 | $ENV{'PWD'} = cwd(); | |||
441 | } | |||
442 | } | |||
443 | else { | |||
444 | my $wd = cwd(); | |||
445 | $wd = Win32::GetFullPathName($wd) if $^O eq 'MSWin32'; | |||
446 | $ENV{'PWD'} = $wd; | |||
447 | } | |||
448 | # Strip an automounter prefix (where /tmp_mnt/foo/bar == /foo/bar) | |||
449 | if ($^O ne 'MSWin32' and $ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) { | |||
450 | my($pd,$pi) = stat($2); | |||
451 | my($dd,$di) = stat($1); | |||
452 | if (defined $pd and defined $dd and $di == $pi and $dd == $pd) { | |||
453 | $ENV{'PWD'}="$2$3"; | |||
454 | } | |||
455 | } | |||
456 | $chdir_init = 1; | |||
457 | } | |||
458 | ||||
459 | sub chdir { | |||
460 | my $newdir = @_ ? shift : ''; # allow for no arg (chdir to HOME dir) | |||
461 | $newdir =~ s|///*|/|g unless $^O eq 'MSWin32'; | |||
462 | chdir_init() unless $chdir_init; | |||
463 | my $newpwd; | |||
464 | if ($^O eq 'MSWin32') { | |||
465 | # get the full path name *before* the chdir() | |||
466 | $newpwd = Win32::GetFullPathName($newdir); | |||
467 | } | |||
468 | ||||
469 | return 0 unless CORE::chdir $newdir; | |||
470 | ||||
471 | if ($^O eq 'VMS') { | |||
472 | return $ENV{'PWD'} = $ENV{'DEFAULT'} | |||
473 | } | |||
474 | elsif ($^O eq 'MacOS') { | |||
475 | return $ENV{'PWD'} = cwd(); | |||
476 | } | |||
477 | elsif ($^O eq 'MSWin32') { | |||
478 | $ENV{'PWD'} = $newpwd; | |||
479 | return 1; | |||
480 | } | |||
481 | ||||
482 | if (ref $newdir eq 'GLOB') { # in case a file/dir handle is passed in | |||
483 | $ENV{'PWD'} = cwd(); | |||
484 | } elsif ($newdir =~ m#^/#s) { | |||
485 | $ENV{'PWD'} = $newdir; | |||
486 | } else { | |||
487 | my @curdir = split(m#/#,$ENV{'PWD'}); | |||
488 | @curdir = ('') unless @curdir; | |||
489 | my $component; | |||
490 | foreach $component (split(m#/#, $newdir)) { | |||
491 | next if $component eq '.'; | |||
492 | pop(@curdir),next if $component eq '..'; | |||
493 | push(@curdir,$component); | |||
494 | } | |||
495 | $ENV{'PWD'} = join('/',@curdir) || '/'; | |||
496 | } | |||
497 | 1; | |||
498 | } | |||
499 | ||||
500 | ||||
501 | sub _perl_abs_path | |||
502 | { | |||
503 | my $start = @_ ? shift : '.'; | |||
504 | my($dotdots, $cwd, @pst, @cst, $dir, @tst); | |||
505 | ||||
506 | unless (@cst = stat( $start )) | |||
507 | { | |||
508 | _carp("stat($start): $!"); | |||
509 | return ''; | |||
510 | } | |||
511 | ||||
512 | unless (-d _) { | |||
513 | # Make sure we can be invoked on plain files, not just directories. | |||
514 | # NOTE that this routine assumes that '/' is the only directory separator. | |||
515 | ||||
516 | my ($dir, $file) = $start =~ m{^(.*)/(.+)$} | |||
517 | or return cwd() . '/' . $start; | |||
518 | ||||
519 | # Can't use "-l _" here, because the previous stat was a stat(), not an lstat(). | |||
520 | if (-l $start) { | |||
521 | my $link_target = readlink($start); | |||
522 | die "Can't resolve link $start: $!" unless defined $link_target; | |||
523 | ||||
524 | require File::Spec; | |||
525 | $link_target = $dir . '/' . $link_target | |||
526 | unless File::Spec->file_name_is_absolute($link_target); | |||
527 | ||||
528 | return abs_path($link_target); | |||
529 | } | |||
530 | ||||
531 | return $dir ? abs_path($dir) . "/$file" : "/$file"; | |||
532 | } | |||
533 | ||||
534 | $cwd = ''; | |||
535 | $dotdots = $start; | |||
536 | do | |||
537 | { | |||
538 | $dotdots .= '/..'; | |||
539 | @pst = @cst; | |||
540 | local *PARENT; | |||
541 | unless (opendir(PARENT, $dotdots)) | |||
542 | { | |||
543 | _carp("opendir($dotdots): $!"); | |||
544 | return ''; | |||
545 | } | |||
546 | unless (@cst = stat($dotdots)) | |||
547 | { | |||
548 | _carp("stat($dotdots): $!"); | |||
549 | closedir(PARENT); | |||
550 | return ''; | |||
551 | } | |||
552 | if ($pst[0] == $cst[0] && $pst[1] == $cst[1]) | |||
553 | { | |||
554 | $dir = undef; | |||
555 | } | |||
556 | else | |||
557 | { | |||
558 | do | |||
559 | { | |||
560 | unless (defined ($dir = readdir(PARENT))) | |||
561 | { | |||
562 | _carp("readdir($dotdots): $!"); | |||
563 | closedir(PARENT); | |||
564 | return ''; | |||
565 | } | |||
566 | $tst[0] = $pst[0]+1 unless (@tst = lstat("$dotdots/$dir")) | |||
567 | } | |||
568 | while ($dir eq '.' || $dir eq '..' || $tst[0] != $pst[0] || | |||
569 | $tst[1] != $pst[1]); | |||
570 | } | |||
571 | $cwd = (defined $dir ? "$dir" : "" ) . "/$cwd" ; | |||
572 | closedir(PARENT); | |||
573 | } while (defined $dir); | |||
574 | chop($cwd) unless $cwd eq '/'; # drop the trailing / | |||
575 | $cwd; | |||
576 | } | |||
577 | ||||
578 | ||||
579 | 1 | 0 | 0 | my $Curdir; |
580 | # spent 439µs (389+50) within Cwd::fast_abs_path which was called 3 times, avg 146µs/call:
# 3 times (389µs+50µs) by WISE::UtilsLight::normalizepath at line 897 of /wise/base/deliv/dev/lib/perl/WISE/UtilsLight.pm, avg 146µs/call | |||
581 | 36 | 0.00042 | 1.2e-5 | local $ENV{PWD} = $ENV{PWD} || ''; # Guard against clobberage |
582 | my $cwd = getcwd(); # spent 30µs making 3 calls to Cwd::getcwd, avg 10µs/call | |||
583 | require File::Spec; | |||
584 | my $path = @_ ? shift : ($Curdir ||= File::Spec->curdir); | |||
585 | ||||
586 | # Detaint else we'll explode in taint mode. This is safe because | |||
587 | # we're not doing anything dangerous with it. | |||
588 | ($path) = $path =~ /(.*)/; | |||
589 | ($cwd) = $cwd =~ /(.*)/; | |||
590 | ||||
591 | unless (-e $path) { | |||
592 | _croak("$path: No such file or directory"); | |||
593 | } | |||
594 | ||||
595 | unless (-d _) { | |||
596 | # Make sure we can be invoked on plain files, not just directories. | |||
597 | ||||
598 | my ($vol, $dir, $file) = File::Spec->splitpath($path); | |||
599 | return File::Spec->catfile($cwd, $path) unless length $dir; | |||
600 | ||||
601 | if (-l $path) { | |||
602 | my $link_target = readlink($path); | |||
603 | die "Can't resolve link $path: $!" unless defined $link_target; | |||
604 | ||||
605 | $link_target = File::Spec->catpath($vol, $dir, $link_target) | |||
606 | unless File::Spec->file_name_is_absolute($link_target); | |||
607 | ||||
608 | return fast_abs_path($link_target); | |||
609 | } | |||
610 | ||||
611 | return $dir eq File::Spec->rootdir | |||
612 | ? File::Spec->catpath($vol, $dir, $file) | |||
613 | : fast_abs_path(File::Spec->catpath($vol, $dir, '')) . '/' . $file; | |||
614 | } | |||
615 | ||||
616 | if (!CORE::chdir($path)) { | |||
617 | _croak("Cannot chdir to $path: $!"); | |||
618 | } | |||
619 | my $realpath = getcwd(); # spent 20µs making 3 calls to Cwd::getcwd, avg 7µs/call | |||
620 | if (! ((-d $cwd) && (CORE::chdir($cwd)))) { | |||
621 | _croak("Cannot chdir back to $cwd: $!"); | |||
622 | } | |||
623 | $realpath; | |||
624 | } | |||
625 | ||||
626 | # added function alias to follow principle of least surprise | |||
627 | # based on previous aliasing. --tchrist 27-Jan-00 | |||
628 | 1 | 1.0e-6 | 1.0e-6 | *fast_realpath = \&fast_abs_path; |
629 | ||||
630 | ||||
631 | # --- PORTING SECTION --- | |||
632 | ||||
633 | # VMS: $ENV{'DEFAULT'} points to default directory at all times | |||
634 | # 06-Mar-1996 Charles Bailey bailey@newman.upenn.edu | |||
635 | # Note: Use of Cwd::chdir() causes the logical name PWD to be defined | |||
636 | # in the process logical name table as the default device and directory | |||
637 | # seen by Perl. This may not be the same as the default device | |||
638 | # and directory seen by DCL after Perl exits, since the effects | |||
639 | # the CRTL chdir() function persist only until Perl exits. | |||
640 | ||||
641 | sub _vms_cwd { | |||
642 | return $ENV{'DEFAULT'}; | |||
643 | } | |||
644 | ||||
645 | sub _vms_abs_path { | |||
646 | return $ENV{'DEFAULT'} unless @_; | |||
647 | my $path = shift; | |||
648 | ||||
649 | if (-l $path) { | |||
650 | my $link_target = readlink($path); | |||
651 | die "Can't resolve link $path: $!" unless defined $link_target; | |||
652 | ||||
653 | return _vms_abs_path($link_target); | |||
654 | } | |||
655 | ||||
656 | # may need to turn foo.dir into [.foo] | |||
657 | my $pathified = VMS::Filespec::pathify($path); | |||
658 | $path = $pathified if defined $pathified; | |||
659 | ||||
660 | return VMS::Filespec::rmsexpand($path); | |||
661 | } | |||
662 | ||||
663 | sub _os2_cwd { | |||
664 | $ENV{'PWD'} = `cmd /c cd`; | |||
665 | chomp $ENV{'PWD'}; | |||
666 | $ENV{'PWD'} =~ s:\\:/:g ; | |||
667 | return $ENV{'PWD'}; | |||
668 | } | |||
669 | ||||
670 | sub _win32_cwd { | |||
671 | if (defined &DynaLoader::boot_DynaLoader) { | |||
672 | $ENV{'PWD'} = Win32::GetCwd(); | |||
673 | } | |||
674 | else { # miniperl | |||
675 | chomp($ENV{'PWD'} = `cd`); | |||
676 | } | |||
677 | $ENV{'PWD'} =~ s:\\:/:g ; | |||
678 | return $ENV{'PWD'}; | |||
679 | } | |||
680 | ||||
681 | 1 | 1.0e-6 | 1.0e-6 | *_NT_cwd = defined &Win32::GetCwd ? \&_win32_cwd : \&_os2_cwd; |
682 | ||||
683 | sub _dos_cwd { | |||
684 | if (!defined &Dos::GetCwd) { | |||
685 | $ENV{'PWD'} = `command /c cd`; | |||
686 | chomp $ENV{'PWD'}; | |||
687 | $ENV{'PWD'} =~ s:\\:/:g ; | |||
688 | } else { | |||
689 | $ENV{'PWD'} = Dos::GetCwd(); | |||
690 | } | |||
691 | return $ENV{'PWD'}; | |||
692 | } | |||
693 | ||||
694 | sub _qnx_cwd { | |||
695 | local $ENV{PATH} = ''; | |||
696 | local $ENV{CDPATH} = ''; | |||
697 | local $ENV{ENV} = ''; | |||
698 | $ENV{'PWD'} = `/usr/bin/fullpath -t`; | |||
699 | chomp $ENV{'PWD'}; | |||
700 | return $ENV{'PWD'}; | |||
701 | } | |||
702 | ||||
703 | sub _qnx_abs_path { | |||
704 | local $ENV{PATH} = ''; | |||
705 | local $ENV{CDPATH} = ''; | |||
706 | local $ENV{ENV} = ''; | |||
707 | my $path = @_ ? shift : '.'; | |||
708 | local *REALPATH; | |||
709 | ||||
710 | defined( open(REALPATH, '-|') || exec '/usr/bin/fullpath', '-t', $path ) or | |||
711 | die "Can't open /usr/bin/fullpath: $!"; | |||
712 | my $realpath = <REALPATH>; | |||
713 | close REALPATH; | |||
714 | chomp $realpath; | |||
715 | return $realpath; | |||
716 | } | |||
717 | ||||
718 | sub _epoc_cwd { | |||
719 | $ENV{'PWD'} = EPOC::getcwd(); | |||
720 | return $ENV{'PWD'}; | |||
721 | } | |||
722 | ||||
723 | ||||
724 | # Now that all the base-level functions are set up, alias the | |||
725 | # user-level functions to the right places | |||
726 | ||||
727 | 3 | 5.0e-6 | 1.7e-6 | if (exists $METHOD_MAP{$^O}) { |
728 | my $map = $METHOD_MAP{$^O}; | |||
729 | foreach my $name (keys %$map) { | |||
730 | local $^W = 0; # assignments trigger 'subroutine redefined' warning | |||
731 | 3 | 0.00012 | 3.9e-5 | no strict 'refs'; # spent 27µs making 1 call to strict::unimport |
732 | *{$name} = \&{$map->{$name}}; | |||
733 | } | |||
734 | } | |||
735 | ||||
736 | # In case the XS version doesn't load. | |||
737 | 1 | 0 | 0 | *abs_path = \&_perl_abs_path unless defined &abs_path; |
738 | 1 | 1.0e-6 | 1.0e-6 | *getcwd = \&_perl_getcwd unless defined &getcwd; |
739 | ||||
740 | # added function alias for those of us more | |||
741 | # used to the libc function. --tchrist 27-Jan-00 | |||
742 | 1 | 1.0e-6 | 1.0e-6 | *realpath = \&abs_path; |
743 | ||||
744 | 1 | 7.0e-5 | 7.0e-5 | 1; |
# spent 97µs within Cwd::fastcwd which was called 5 times, avg 19µs/call:
# 2 times (27µs+0) by WISE::UtilsLight::banner at line 121 of /wise/base/deliv/dev/lib/perl/WISE/UtilsLight.pm, avg 14µs/call
# 2 times (18µs+0) by WISE::UtilsLight::normalizepath at line 910 of /wise/base/deliv/dev/lib/perl/WISE/UtilsLight.pm, avg 9µs/call
# once (52µs+0) at line 19 of /wise/base/deliv/dev/lib/perl/WISE/Params.pm | ||||
# spent 63µs within Cwd::getcwd which was called 7 times, avg 9µs/call:
# 3 times (30µs+0) by Cwd::fast_abs_path at line 582 of /opt/wise/lib/perl5/5.10.0/x86_64-linux-thread-multi/Cwd.pm, avg 10µs/call
# 3 times (20µs+0) by Cwd::fast_abs_path at line 619 of /opt/wise/lib/perl5/5.10.0/x86_64-linux-thread-multi/Cwd.pm, avg 7µs/call
# once (13µs+0) by WISE::Env::import at line 159 of /wise/base/static/lib/perl5/site_perl/5.10.0/WISE/Env.pm |