Filename | /usr/lib/perl/5.10/Cwd.pm |
Statements | Executed 57 statements in 3.93ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
2 | 2 | 1 | 36µs | 36µs | abs_path (xsub) | Cwd::
1 | 1 | 1 | 31µs | 69µs | BEGIN@635 | Cwd::
1 | 1 | 1 | 22µs | 27µs | BEGIN@3 | Cwd::
1 | 1 | 1 | 17µs | 134µs | BEGIN@5 | Cwd::
1 | 1 | 1 | 16µs | 54µs | BEGIN@4 | Cwd::
1 | 1 | 1 | 9µs | 9µs | CORE:regcomp (opcode) | Cwd::
1 | 1 | 1 | 8µs | 8µs | BEGIN@42 | Cwd::
1 | 1 | 1 | 8µs | 8µs | CORE:fteexec (opcode) | Cwd::
0 | 0 | 0 | 0s | 0s | __ANON__[:236] | Cwd::
0 | 0 | 0 | 0s | 0s | _backtick_pwd | Cwd::
0 | 0 | 0 | 0s | 0s | _carp | Cwd::
0 | 0 | 0 | 0s | 0s | _croak | Cwd::
0 | 0 | 0 | 0s | 0s | _dos_cwd | Cwd::
0 | 0 | 0 | 0s | 0s | _epoc_cwd | Cwd::
0 | 0 | 0 | 0s | 0s | _os2_cwd | Cwd::
0 | 0 | 0 | 0s | 0s | _perl_abs_path | Cwd::
0 | 0 | 0 | 0s | 0s | _perl_getcwd | Cwd::
0 | 0 | 0 | 0s | 0s | _qnx_abs_path | Cwd::
0 | 0 | 0 | 0s | 0s | _qnx_cwd | Cwd::
0 | 0 | 0 | 0s | 0s | _vms_abs_path | Cwd::
0 | 0 | 0 | 0s | 0s | _vms_cwd | Cwd::
0 | 0 | 0 | 0s | 0s | _vms_efs | Cwd::
0 | 0 | 0 | 0s | 0s | _vms_unix_rpt | Cwd::
0 | 0 | 0 | 0s | 0s | _win32_cwd | Cwd::
0 | 0 | 0 | 0s | 0s | chdir | Cwd::
0 | 0 | 0 | 0s | 0s | chdir_init | Cwd::
0 | 0 | 0 | 0s | 0s | fast_abs_path | Cwd::
0 | 0 | 0 | 0s | 0s | fastcwd_ | Cwd::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | package Cwd; | ||||
2 | |||||
3 | 3 | 37µs | 2 | 32µs | # spent 27µs (22+5) within Cwd::BEGIN@3 which was called:
# once (22µs+5µs) by File::Path::BEGIN@6 at line 3 # spent 27µs making 1 call to Cwd::BEGIN@3
# spent 5µs making 1 call to strict::import |
4 | 3 | 51µs | 2 | 91µs | # spent 54µs (16+38) within Cwd::BEGIN@4 which was called:
# once (16µs+38µs) by File::Path::BEGIN@6 at line 4 # spent 54µs making 1 call to Cwd::BEGIN@4
# spent 38µs making 1 call to Exporter::import |
5 | 3 | 270µs | 2 | 250µs | # spent 134µs (17+117) within Cwd::BEGIN@5 which was called:
# once (17µs+117µs) by File::Path::BEGIN@6 at line 5 # spent 134µs making 1 call to Cwd::BEGIN@5
# spent 117µs making 1 call to vars::import |
6 | |||||
7 | 1 | 2µs | $VERSION = '3.30'; | ||
8 | 1 | 700ns | my $xs_version = $VERSION; | ||
9 | 1 | 40µs | $VERSION = eval $VERSION; # spent 5µs executing statements in string eval | ||
10 | |||||
11 | 1 | 19µs | @ISA = qw/ Exporter /; | ||
12 | 1 | 2µs | @EXPORT = qw(cwd getcwd fastcwd fastgetcwd); | ||
13 | 1 | 3µs | push @EXPORT, qw(getdcwd) if $^O eq 'MSWin32'; | ||
14 | 1 | 3µs | @EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath); | ||
15 | |||||
16 | # sys_cwd may keep the builtin command | ||||
17 | |||||
18 | # All the functionality of this module may provided by builtins, | ||||
19 | # there is no sense to process the rest of the file. | ||||
20 | # The best choice may be to have this in BEGIN, but how to return from BEGIN? | ||||
21 | |||||
22 | 1 | 700ns | if ($^O eq 'os2') { | ||
23 | local $^W = 0; | ||||
24 | |||||
25 | *cwd = defined &sys_cwd ? \&sys_cwd : \&_os2_cwd; | ||||
26 | *getcwd = \&cwd; | ||||
27 | *fastgetcwd = \&cwd; | ||||
28 | *fastcwd = \&cwd; | ||||
29 | |||||
30 | *fast_abs_path = \&sys_abspath if defined &sys_abspath; | ||||
31 | *abs_path = \&fast_abs_path; | ||||
32 | *realpath = \&fast_abs_path; | ||||
33 | *fast_realpath = \&fast_abs_path; | ||||
34 | |||||
35 | return 1; | ||||
36 | } | ||||
37 | |||||
38 | # Need to look up the feature settings on VMS. The preferred way is to use the | ||||
39 | # VMS::Feature module, but that may not be available to dual life modules. | ||||
40 | |||||
41 | 1 | 400ns | my $use_vms_feature; | ||
42 | # spent 8µs within Cwd::BEGIN@42 which was called:
# once (8µs+0s) by File::Path::BEGIN@6 at line 48 | ||||
43 | 1 | 8µs | if ($^O eq 'VMS') { | ||
44 | if (eval { local $SIG{__DIE__}; require VMS::Feature; }) { | ||||
45 | $use_vms_feature = 1; | ||||
46 | } | ||||
47 | } | ||||
48 | 1 | 2.79ms | 1 | 8µs | } # spent 8µs making 1 call to Cwd::BEGIN@42 |
49 | |||||
50 | # Need to look up the UNIX report mode. This may become a dynamic mode | ||||
51 | # in the future. | ||||
52 | sub _vms_unix_rpt { | ||||
53 | my $unix_rpt; | ||||
54 | if ($use_vms_feature) { | ||||
55 | $unix_rpt = VMS::Feature::current("filename_unix_report"); | ||||
56 | } else { | ||||
57 | my $env_unix_rpt = $ENV{'DECC$FILENAME_UNIX_REPORT'} || ''; | ||||
58 | $unix_rpt = $env_unix_rpt =~ /^[ET1]/i; | ||||
59 | } | ||||
60 | return $unix_rpt; | ||||
61 | } | ||||
62 | |||||
63 | # Need to look up the EFS character set mode. This may become a dynamic | ||||
64 | # mode in the future. | ||||
65 | sub _vms_efs { | ||||
66 | my $efs; | ||||
67 | if ($use_vms_feature) { | ||||
68 | $efs = VMS::Feature::current("efs_charset"); | ||||
69 | } else { | ||||
70 | my $env_efs = $ENV{'DECC$EFS_CHARSET'} || ''; | ||||
71 | $efs = $env_efs =~ /^[ET1]/i; | ||||
72 | } | ||||
73 | return $efs; | ||||
74 | } | ||||
75 | |||||
76 | # If loading the XS stuff doesn't work, we can fall back to pure perl | ||||
77 | 1 | 1µs | eval { | ||
78 | 1 | 4µs | if ( $] >= 5.006 ) { | ||
79 | 1 | 2µs | require XSLoader; | ||
80 | 1 | 263µs | 1 | 253µs | XSLoader::load( __PACKAGE__, $xs_version); # spent 253µs making 1 call to XSLoader::load |
81 | } else { | ||||
82 | require DynaLoader; | ||||
83 | push @ISA, 'DynaLoader'; | ||||
84 | __PACKAGE__->bootstrap( $xs_version ); | ||||
85 | } | ||||
86 | }; | ||||
87 | |||||
88 | # Must be after the DynaLoader stuff: | ||||
89 | 1 | 29µs | $VERSION = eval $VERSION; # spent 3µs executing statements in string eval | ||
90 | |||||
91 | # Big nasty table of function aliases | ||||
92 | 1 | 24µs | my %METHOD_MAP = | ||
93 | ( | ||||
94 | VMS => | ||||
95 | { | ||||
96 | cwd => '_vms_cwd', | ||||
97 | getcwd => '_vms_cwd', | ||||
98 | fastcwd => '_vms_cwd', | ||||
99 | fastgetcwd => '_vms_cwd', | ||||
100 | abs_path => '_vms_abs_path', | ||||
101 | fast_abs_path => '_vms_abs_path', | ||||
102 | }, | ||||
103 | |||||
104 | MSWin32 => | ||||
105 | { | ||||
106 | # We assume that &_NT_cwd is defined as an XSUB or in the core. | ||||
107 | cwd => '_NT_cwd', | ||||
108 | getcwd => '_NT_cwd', | ||||
109 | fastcwd => '_NT_cwd', | ||||
110 | fastgetcwd => '_NT_cwd', | ||||
111 | abs_path => 'fast_abs_path', | ||||
112 | realpath => 'fast_abs_path', | ||||
113 | }, | ||||
114 | |||||
115 | dos => | ||||
116 | { | ||||
117 | cwd => '_dos_cwd', | ||||
118 | getcwd => '_dos_cwd', | ||||
119 | fastgetcwd => '_dos_cwd', | ||||
120 | fastcwd => '_dos_cwd', | ||||
121 | abs_path => 'fast_abs_path', | ||||
122 | }, | ||||
123 | |||||
124 | # QNX4. QNX6 has a $os of 'nto'. | ||||
125 | qnx => | ||||
126 | { | ||||
127 | cwd => '_qnx_cwd', | ||||
128 | getcwd => '_qnx_cwd', | ||||
129 | fastgetcwd => '_qnx_cwd', | ||||
130 | fastcwd => '_qnx_cwd', | ||||
131 | abs_path => '_qnx_abs_path', | ||||
132 | fast_abs_path => '_qnx_abs_path', | ||||
133 | }, | ||||
134 | |||||
135 | cygwin => | ||||
136 | { | ||||
137 | getcwd => 'cwd', | ||||
138 | fastgetcwd => 'cwd', | ||||
139 | fastcwd => 'cwd', | ||||
140 | abs_path => 'fast_abs_path', | ||||
141 | realpath => 'fast_abs_path', | ||||
142 | }, | ||||
143 | |||||
144 | epoc => | ||||
145 | { | ||||
146 | cwd => '_epoc_cwd', | ||||
147 | getcwd => '_epoc_cwd', | ||||
148 | fastgetcwd => '_epoc_cwd', | ||||
149 | fastcwd => '_epoc_cwd', | ||||
150 | abs_path => 'fast_abs_path', | ||||
151 | }, | ||||
152 | |||||
153 | MacOS => | ||||
154 | { | ||||
155 | getcwd => 'cwd', | ||||
156 | fastgetcwd => 'cwd', | ||||
157 | fastcwd => 'cwd', | ||||
158 | abs_path => 'fast_abs_path', | ||||
159 | }, | ||||
160 | ); | ||||
161 | |||||
162 | 1 | 1µs | $METHOD_MAP{NT} = $METHOD_MAP{MSWin32}; | ||
163 | |||||
164 | # Find the pwd command in the expected locations. We assume these | ||||
165 | # are safe. This prevents _backtick_pwd() consulting $ENV{PATH} | ||||
166 | # so everything works under taint mode. | ||||
167 | 1 | 300ns | my $pwd_cmd; | ||
168 | 1 | 1µs | foreach my $try ('/bin/pwd', | ||
169 | '/usr/bin/pwd', | ||||
170 | '/QOpenSys/bin/pwd', # OS/400 PASE. | ||||
171 | ) { | ||||
172 | |||||
173 | 1 | 17µs | 1 | 8µs | if( -x $try ) { # spent 8µs making 1 call to Cwd::CORE:fteexec |
174 | 1 | 400ns | $pwd_cmd = $try; | ||
175 | 1 | 1µs | last; | ||
176 | } | ||||
177 | } | ||||
178 | 1 | 800ns | my $found_pwd_cmd = defined($pwd_cmd); | ||
179 | 1 | 200ns | unless ($pwd_cmd) { | ||
180 | # Isn't this wrong? _backtick_pwd() will fail if somenone has | ||||
181 | # pwd in their path but it is not /bin/pwd or /usr/bin/pwd? | ||||
182 | # See [perl #16774]. --jhi | ||||
183 | $pwd_cmd = 'pwd'; | ||||
184 | } | ||||
185 | |||||
186 | # Lazy-load Carp | ||||
187 | sub _carp { require Carp; Carp::carp(@_) } | ||||
188 | sub _croak { require Carp; Carp::croak(@_) } | ||||
189 | |||||
190 | # The 'natural and safe form' for UNIX (pwd may be setuid root) | ||||
191 | sub _backtick_pwd { | ||||
192 | # Localize %ENV entries in a way that won't create new hash keys | ||||
193 | my @localize = grep exists $ENV{$_}, qw(PATH IFS CDPATH ENV BASH_ENV); | ||||
194 | local @ENV{@localize}; | ||||
195 | |||||
196 | my $cwd = `$pwd_cmd`; | ||||
197 | # Belt-and-suspenders in case someone said "undef $/". | ||||
198 | local $/ = "\n"; | ||||
199 | # `pwd` may fail e.g. if the disk is full | ||||
200 | chomp($cwd) if defined $cwd; | ||||
201 | $cwd; | ||||
202 | } | ||||
203 | |||||
204 | # Since some ports may predefine cwd internally (e.g., NT) | ||||
205 | # we take care not to override an existing definition for cwd(). | ||||
206 | |||||
207 | 1 | 4µs | unless ($METHOD_MAP{$^O}{cwd} or defined &cwd) { | ||
208 | # The pwd command is not available in some chroot(2)'ed environments | ||||
209 | 1 | 11µs | 1 | 6µs | my $sep = $Config::Config{path_sep} || ':'; # spent 6µs making 1 call to Config::FETCH |
210 | 1 | 800ns | my $os = $^O; # Protect $^O from tainting | ||
211 | |||||
212 | # Try again to find a pwd, this time searching the whole PATH. | ||||
213 | 1 | 2µs | if (defined $ENV{PATH} and $os ne 'MSWin32') { # no pwd on Windows | ||
214 | 1 | 18µs | 1 | 9µs | my @candidates = split($sep, $ENV{PATH}); # spent 9µs making 1 call to Cwd::CORE:regcomp |
215 | 1 | 2µs | while (!$found_pwd_cmd and @candidates) { | ||
216 | my $candidate = shift @candidates; | ||||
217 | $found_pwd_cmd = 1 if -x "$candidate/pwd"; | ||||
218 | } | ||||
219 | } | ||||
220 | |||||
221 | # MacOS has some special magic to make `pwd` work. | ||||
222 | 1 | 2µs | if( $os eq 'MacOS' || $found_pwd_cmd ) | ||
223 | { | ||||
224 | *cwd = \&_backtick_pwd; | ||||
225 | } | ||||
226 | else { | ||||
227 | *cwd = \&getcwd; | ||||
228 | } | ||||
229 | } | ||||
230 | |||||
231 | 1 | 700ns | if ($^O eq 'cygwin') { | ||
232 | # We need to make sure cwd() is called with no args, because it's | ||||
233 | # got an arg-less prototype and will die if args are present. | ||||
234 | local $^W = 0; | ||||
235 | my $orig_cwd = \&cwd; | ||||
236 | *cwd = sub { &$orig_cwd() } | ||||
237 | } | ||||
238 | |||||
239 | # set a reasonable (and very safe) default for fastgetcwd, in case it | ||||
240 | # isn't redefined later (20001212 rspier) | ||||
241 | 1 | 700ns | *fastgetcwd = \&cwd; | ||
242 | |||||
243 | # A non-XS version of getcwd() - also used to bootstrap the perl build | ||||
244 | # process, when miniperl is running and no XS loading happens. | ||||
245 | sub _perl_getcwd | ||||
246 | { | ||||
247 | abs_path('.'); | ||||
248 | } | ||||
249 | |||||
250 | # By John Bazik | ||||
251 | # | ||||
252 | # Usage: $cwd = &fastcwd; | ||||
253 | # | ||||
254 | # This is a faster version of getcwd. It's also more dangerous because | ||||
255 | # you might chdir out of a directory that you can't chdir back into. | ||||
256 | |||||
257 | sub fastcwd_ { | ||||
258 | my($odev, $oino, $cdev, $cino, $tdev, $tino); | ||||
259 | my(@path, $path); | ||||
260 | local(*DIR); | ||||
261 | |||||
262 | my($orig_cdev, $orig_cino) = stat('.'); | ||||
263 | ($cdev, $cino) = ($orig_cdev, $orig_cino); | ||||
264 | for (;;) { | ||||
265 | my $direntry; | ||||
266 | ($odev, $oino) = ($cdev, $cino); | ||||
267 | CORE::chdir('..') || return undef; | ||||
268 | ($cdev, $cino) = stat('.'); | ||||
269 | last if $odev == $cdev && $oino == $cino; | ||||
270 | opendir(DIR, '.') || return undef; | ||||
271 | for (;;) { | ||||
272 | $direntry = readdir(DIR); | ||||
273 | last unless defined $direntry; | ||||
274 | next if $direntry eq '.'; | ||||
275 | next if $direntry eq '..'; | ||||
276 | |||||
277 | ($tdev, $tino) = lstat($direntry); | ||||
278 | last unless $tdev != $odev || $tino != $oino; | ||||
279 | } | ||||
280 | closedir(DIR); | ||||
281 | return undef unless defined $direntry; # should never happen | ||||
282 | unshift(@path, $direntry); | ||||
283 | } | ||||
284 | $path = '/' . join('/', @path); | ||||
285 | if ($^O eq 'apollo') { $path = "/".$path; } | ||||
286 | # At this point $path may be tainted (if tainting) and chdir would fail. | ||||
287 | # Untaint it then check that we landed where we started. | ||||
288 | $path =~ /^(.*)\z/s # untaint | ||||
289 | && CORE::chdir($1) or return undef; | ||||
290 | ($cdev, $cino) = stat('.'); | ||||
291 | die "Unstable directory path, current directory changed unexpectedly" | ||||
292 | if $cdev != $orig_cdev || $cino != $orig_cino; | ||||
293 | $path; | ||||
294 | } | ||||
295 | 1 | 400ns | if (not defined &fastcwd) { *fastcwd = \&fastcwd_ } | ||
296 | |||||
297 | # Keeps track of current working directory in PWD environment var | ||||
298 | # Usage: | ||||
299 | # use Cwd 'chdir'; | ||||
300 | # chdir $newdir; | ||||
301 | |||||
302 | 1 | 400ns | my $chdir_init = 0; | ||
303 | |||||
304 | sub chdir_init { | ||||
305 | if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos' and $^O ne 'MSWin32') { | ||||
306 | my($dd,$di) = stat('.'); | ||||
307 | my($pd,$pi) = stat($ENV{'PWD'}); | ||||
308 | if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) { | ||||
309 | $ENV{'PWD'} = cwd(); | ||||
310 | } | ||||
311 | } | ||||
312 | else { | ||||
313 | my $wd = cwd(); | ||||
314 | $wd = Win32::GetFullPathName($wd) if $^O eq 'MSWin32'; | ||||
315 | $ENV{'PWD'} = $wd; | ||||
316 | } | ||||
317 | # Strip an automounter prefix (where /tmp_mnt/foo/bar == /foo/bar) | ||||
318 | if ($^O ne 'MSWin32' and $ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) { | ||||
319 | my($pd,$pi) = stat($2); | ||||
320 | my($dd,$di) = stat($1); | ||||
321 | if (defined $pd and defined $dd and $di == $pi and $dd == $pd) { | ||||
322 | $ENV{'PWD'}="$2$3"; | ||||
323 | } | ||||
324 | } | ||||
325 | $chdir_init = 1; | ||||
326 | } | ||||
327 | |||||
328 | sub chdir { | ||||
329 | my $newdir = @_ ? shift : ''; # allow for no arg (chdir to HOME dir) | ||||
330 | $newdir =~ s|///*|/|g unless $^O eq 'MSWin32'; | ||||
331 | chdir_init() unless $chdir_init; | ||||
332 | my $newpwd; | ||||
333 | if ($^O eq 'MSWin32') { | ||||
334 | # get the full path name *before* the chdir() | ||||
335 | $newpwd = Win32::GetFullPathName($newdir); | ||||
336 | } | ||||
337 | |||||
338 | return 0 unless CORE::chdir $newdir; | ||||
339 | |||||
340 | if ($^O eq 'VMS') { | ||||
341 | return $ENV{'PWD'} = $ENV{'DEFAULT'} | ||||
342 | } | ||||
343 | elsif ($^O eq 'MacOS') { | ||||
344 | return $ENV{'PWD'} = cwd(); | ||||
345 | } | ||||
346 | elsif ($^O eq 'MSWin32') { | ||||
347 | $ENV{'PWD'} = $newpwd; | ||||
348 | return 1; | ||||
349 | } | ||||
350 | |||||
351 | if (ref $newdir eq 'GLOB') { # in case a file/dir handle is passed in | ||||
352 | $ENV{'PWD'} = cwd(); | ||||
353 | } elsif ($newdir =~ m#^/#s) { | ||||
354 | $ENV{'PWD'} = $newdir; | ||||
355 | } else { | ||||
356 | my @curdir = split(m#/#,$ENV{'PWD'}); | ||||
357 | @curdir = ('') unless @curdir; | ||||
358 | my $component; | ||||
359 | foreach $component (split(m#/#, $newdir)) { | ||||
360 | next if $component eq '.'; | ||||
361 | pop(@curdir),next if $component eq '..'; | ||||
362 | push(@curdir,$component); | ||||
363 | } | ||||
364 | $ENV{'PWD'} = join('/',@curdir) || '/'; | ||||
365 | } | ||||
366 | 1; | ||||
367 | } | ||||
368 | |||||
369 | sub _perl_abs_path | ||||
370 | { | ||||
371 | my $start = @_ ? shift : '.'; | ||||
372 | my($dotdots, $cwd, @pst, @cst, $dir, @tst); | ||||
373 | |||||
374 | unless (@cst = stat( $start )) | ||||
375 | { | ||||
376 | _carp("stat($start): $!"); | ||||
377 | return ''; | ||||
378 | } | ||||
379 | |||||
380 | unless (-d _) { | ||||
381 | # Make sure we can be invoked on plain files, not just directories. | ||||
382 | # NOTE that this routine assumes that '/' is the only directory separator. | ||||
383 | |||||
384 | my ($dir, $file) = $start =~ m{^(.*)/(.+)$} | ||||
385 | or return cwd() . '/' . $start; | ||||
386 | |||||
387 | # Can't use "-l _" here, because the previous stat was a stat(), not an lstat(). | ||||
388 | if (-l $start) { | ||||
389 | my $link_target = readlink($start); | ||||
390 | die "Can't resolve link $start: $!" unless defined $link_target; | ||||
391 | |||||
392 | require File::Spec; | ||||
393 | $link_target = $dir . '/' . $link_target | ||||
394 | unless File::Spec->file_name_is_absolute($link_target); | ||||
395 | |||||
396 | return abs_path($link_target); | ||||
397 | } | ||||
398 | |||||
399 | return $dir ? abs_path($dir) . "/$file" : "/$file"; | ||||
400 | } | ||||
401 | |||||
402 | $cwd = ''; | ||||
403 | $dotdots = $start; | ||||
404 | do | ||||
405 | { | ||||
406 | $dotdots .= '/..'; | ||||
407 | @pst = @cst; | ||||
408 | local *PARENT; | ||||
409 | unless (opendir(PARENT, $dotdots)) | ||||
410 | { | ||||
411 | # probably a permissions issue. Try the native command. | ||||
412 | return File::Spec->rel2abs( $start, _backtick_pwd() ); | ||||
413 | } | ||||
414 | unless (@cst = stat($dotdots)) | ||||
415 | { | ||||
416 | _carp("stat($dotdots): $!"); | ||||
417 | closedir(PARENT); | ||||
418 | return ''; | ||||
419 | } | ||||
420 | if ($pst[0] == $cst[0] && $pst[1] == $cst[1]) | ||||
421 | { | ||||
422 | $dir = undef; | ||||
423 | } | ||||
424 | else | ||||
425 | { | ||||
426 | do | ||||
427 | { | ||||
428 | unless (defined ($dir = readdir(PARENT))) | ||||
429 | { | ||||
430 | _carp("readdir($dotdots): $!"); | ||||
431 | closedir(PARENT); | ||||
432 | return ''; | ||||
433 | } | ||||
434 | $tst[0] = $pst[0]+1 unless (@tst = lstat("$dotdots/$dir")) | ||||
435 | } | ||||
436 | while ($dir eq '.' || $dir eq '..' || $tst[0] != $pst[0] || | ||||
437 | $tst[1] != $pst[1]); | ||||
438 | } | ||||
439 | $cwd = (defined $dir ? "$dir" : "" ) . "/$cwd" ; | ||||
440 | closedir(PARENT); | ||||
441 | } while (defined $dir); | ||||
442 | chop($cwd) unless $cwd eq '/'; # drop the trailing / | ||||
443 | $cwd; | ||||
444 | } | ||||
445 | |||||
446 | 1 | 300ns | my $Curdir; | ||
447 | sub fast_abs_path { | ||||
448 | local $ENV{PWD} = $ENV{PWD} || ''; # Guard against clobberage | ||||
449 | my $cwd = getcwd(); | ||||
450 | require File::Spec; | ||||
451 | my $path = @_ ? shift : ($Curdir ||= File::Spec->curdir); | ||||
452 | |||||
453 | # Detaint else we'll explode in taint mode. This is safe because | ||||
454 | # we're not doing anything dangerous with it. | ||||
455 | ($path) = $path =~ /(.*)/; | ||||
456 | ($cwd) = $cwd =~ /(.*)/; | ||||
457 | |||||
458 | unless (-e $path) { | ||||
459 | _croak("$path: No such file or directory"); | ||||
460 | } | ||||
461 | |||||
462 | unless (-d _) { | ||||
463 | # Make sure we can be invoked on plain files, not just directories. | ||||
464 | |||||
465 | my ($vol, $dir, $file) = File::Spec->splitpath($path); | ||||
466 | return File::Spec->catfile($cwd, $path) unless length $dir; | ||||
467 | |||||
468 | if (-l $path) { | ||||
469 | my $link_target = readlink($path); | ||||
470 | die "Can't resolve link $path: $!" unless defined $link_target; | ||||
471 | |||||
472 | $link_target = File::Spec->catpath($vol, $dir, $link_target) | ||||
473 | unless File::Spec->file_name_is_absolute($link_target); | ||||
474 | |||||
475 | return fast_abs_path($link_target); | ||||
476 | } | ||||
477 | |||||
478 | return $dir eq File::Spec->rootdir | ||||
479 | ? File::Spec->catpath($vol, $dir, $file) | ||||
480 | : fast_abs_path(File::Spec->catpath($vol, $dir, '')) . '/' . $file; | ||||
481 | } | ||||
482 | |||||
483 | if (!CORE::chdir($path)) { | ||||
484 | _croak("Cannot chdir to $path: $!"); | ||||
485 | } | ||||
486 | my $realpath = getcwd(); | ||||
487 | if (! ((-d $cwd) && (CORE::chdir($cwd)))) { | ||||
488 | _croak("Cannot chdir back to $cwd: $!"); | ||||
489 | } | ||||
490 | $realpath; | ||||
491 | } | ||||
492 | |||||
493 | # added function alias to follow principle of least surprise | ||||
494 | # based on previous aliasing. --tchrist 27-Jan-00 | ||||
495 | 1 | 700ns | *fast_realpath = \&fast_abs_path; | ||
496 | |||||
497 | # --- PORTING SECTION --- | ||||
498 | |||||
499 | # VMS: $ENV{'DEFAULT'} points to default directory at all times | ||||
500 | # 06-Mar-1996 Charles Bailey bailey@newman.upenn.edu | ||||
501 | # Note: Use of Cwd::chdir() causes the logical name PWD to be defined | ||||
502 | # in the process logical name table as the default device and directory | ||||
503 | # seen by Perl. This may not be the same as the default device | ||||
504 | # and directory seen by DCL after Perl exits, since the effects | ||||
505 | # the CRTL chdir() function persist only until Perl exits. | ||||
506 | |||||
507 | sub _vms_cwd { | ||||
508 | return $ENV{'DEFAULT'}; | ||||
509 | } | ||||
510 | |||||
511 | sub _vms_abs_path { | ||||
512 | return $ENV{'DEFAULT'} unless @_; | ||||
513 | my $path = shift; | ||||
514 | |||||
515 | my $efs = _vms_efs; | ||||
516 | my $unix_rpt = _vms_unix_rpt; | ||||
517 | |||||
518 | if (defined &VMS::Filespec::vmsrealpath) { | ||||
519 | my $path_unix = 0; | ||||
520 | my $path_vms = 0; | ||||
521 | |||||
522 | $path_unix = 1 if ($path =~ m#(?<=\^)/#); | ||||
523 | $path_unix = 1 if ($path =~ /^\.\.?$/); | ||||
524 | $path_vms = 1 if ($path =~ m#[\[<\]]#); | ||||
525 | $path_vms = 1 if ($path =~ /^--?$/); | ||||
526 | |||||
527 | my $unix_mode = $path_unix; | ||||
528 | if ($efs) { | ||||
529 | # In case of a tie, the Unix report mode decides. | ||||
530 | if ($path_vms == $path_unix) { | ||||
531 | $unix_mode = $unix_rpt; | ||||
532 | } else { | ||||
533 | $unix_mode = 0 if $path_vms; | ||||
534 | } | ||||
535 | } | ||||
536 | |||||
537 | if ($unix_mode) { | ||||
538 | # Unix format | ||||
539 | return VMS::Filespec::unixrealpath($path); | ||||
540 | } | ||||
541 | |||||
542 | # VMS format | ||||
543 | |||||
544 | my $new_path = VMS::Filespec::vmsrealpath($path); | ||||
545 | |||||
546 | # Perl expects directories to be in directory format | ||||
547 | $new_path = VMS::Filespec::pathify($new_path) if -d $path; | ||||
548 | return $new_path; | ||||
549 | } | ||||
550 | |||||
551 | # Fallback to older algorithm if correct ones are not | ||||
552 | # available. | ||||
553 | |||||
554 | if (-l $path) { | ||||
555 | my $link_target = readlink($path); | ||||
556 | die "Can't resolve link $path: $!" unless defined $link_target; | ||||
557 | |||||
558 | return _vms_abs_path($link_target); | ||||
559 | } | ||||
560 | |||||
561 | # may need to turn foo.dir into [.foo] | ||||
562 | my $pathified = VMS::Filespec::pathify($path); | ||||
563 | $path = $pathified if defined $pathified; | ||||
564 | |||||
565 | return VMS::Filespec::rmsexpand($path); | ||||
566 | } | ||||
567 | |||||
568 | sub _os2_cwd { | ||||
569 | $ENV{'PWD'} = `cmd /c cd`; | ||||
570 | chomp $ENV{'PWD'}; | ||||
571 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
572 | return $ENV{'PWD'}; | ||||
573 | } | ||||
574 | |||||
575 | sub _win32_cwd { | ||||
576 | if (defined &DynaLoader::boot_DynaLoader) { | ||||
577 | $ENV{'PWD'} = Win32::GetCwd(); | ||||
578 | } | ||||
579 | else { # miniperl | ||||
580 | chomp($ENV{'PWD'} = `cd`); | ||||
581 | } | ||||
582 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
583 | return $ENV{'PWD'}; | ||||
584 | } | ||||
585 | |||||
586 | 1 | 800ns | *_NT_cwd = defined &Win32::GetCwd ? \&_win32_cwd : \&_os2_cwd; | ||
587 | |||||
588 | sub _dos_cwd { | ||||
589 | if (!defined &Dos::GetCwd) { | ||||
590 | $ENV{'PWD'} = `command /c cd`; | ||||
591 | chomp $ENV{'PWD'}; | ||||
592 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
593 | } else { | ||||
594 | $ENV{'PWD'} = Dos::GetCwd(); | ||||
595 | } | ||||
596 | return $ENV{'PWD'}; | ||||
597 | } | ||||
598 | |||||
599 | sub _qnx_cwd { | ||||
600 | local $ENV{PATH} = ''; | ||||
601 | local $ENV{CDPATH} = ''; | ||||
602 | local $ENV{ENV} = ''; | ||||
603 | $ENV{'PWD'} = `/usr/bin/fullpath -t`; | ||||
604 | chomp $ENV{'PWD'}; | ||||
605 | return $ENV{'PWD'}; | ||||
606 | } | ||||
607 | |||||
608 | sub _qnx_abs_path { | ||||
609 | local $ENV{PATH} = ''; | ||||
610 | local $ENV{CDPATH} = ''; | ||||
611 | local $ENV{ENV} = ''; | ||||
612 | my $path = @_ ? shift : '.'; | ||||
613 | local *REALPATH; | ||||
614 | |||||
615 | defined( open(REALPATH, '-|') || exec '/usr/bin/fullpath', '-t', $path ) or | ||||
616 | die "Can't open /usr/bin/fullpath: $!"; | ||||
617 | my $realpath = <REALPATH>; | ||||
618 | close REALPATH; | ||||
619 | chomp $realpath; | ||||
620 | return $realpath; | ||||
621 | } | ||||
622 | |||||
623 | sub _epoc_cwd { | ||||
624 | $ENV{'PWD'} = EPOC::getcwd(); | ||||
625 | return $ENV{'PWD'}; | ||||
626 | } | ||||
627 | |||||
628 | # Now that all the base-level functions are set up, alias the | ||||
629 | # user-level functions to the right places | ||||
630 | |||||
631 | 1 | 1µs | if (exists $METHOD_MAP{$^O}) { | ||
632 | 1 | 700ns | my $map = $METHOD_MAP{$^O}; | ||
633 | 1 | 2µs | foreach my $name (keys %$map) { | ||
634 | local $^W = 0; # assignments trigger 'subroutine redefined' warning | ||||
635 | 3 | 252µs | 2 | 107µs | # spent 69µs (31+38) within Cwd::BEGIN@635 which was called:
# once (31µs+38µs) by File::Path::BEGIN@6 at line 635 # spent 69µs making 1 call to Cwd::BEGIN@635
# spent 38µs making 1 call to strict::unimport |
636 | *{$name} = \&{$map->{$name}}; | ||||
637 | } | ||||
638 | } | ||||
639 | |||||
640 | # In case the XS version doesn't load. | ||||
641 | 1 | 400ns | *abs_path = \&_perl_abs_path unless defined &abs_path; | ||
642 | 1 | 300ns | *getcwd = \&_perl_getcwd unless defined &getcwd; | ||
643 | |||||
644 | # added function alias for those of us more | ||||
645 | # used to the libc function. --tchrist 27-Jan-00 | ||||
646 | 1 | 600ns | *realpath = \&abs_path; | ||
647 | |||||
648 | 1 | 59µs | 1; | ||
# spent 8µs within Cwd::CORE:fteexec which was called:
# once (8µs+0s) by File::Path::BEGIN@6 at line 173 | |||||
# spent 9µs within Cwd::CORE:regcomp which was called:
# once (9µs+0s) by File::Path::BEGIN@6 at line 214 | |||||
# spent 36µs within Cwd::abs_path which was called 2 times, avg 18µs/call:
# once (30µs+0s) by FindBin::init at line 197 of FindBin.pm
# once (7µs+0s) by FindBin::init at line 200 of FindBin.pm |