Filename | /usr/lib/x86_64-linux-gnu/perl/5.20/Cwd.pm |
Statements | Executed 50 statements in 2.60ms |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
2 | 2 | 1 | 2.17ms | 2.17ms | abs_path (xsub) | Cwd::
1 | 1 | 1 | 24µs | 24µs | bootstrap (xsub) | Cwd::
1 | 1 | 1 | 13µs | 24µs | BEGIN@3 | Cwd::
1 | 1 | 1 | 13µs | 22µs | BEGIN@667 | Cwd::
1 | 1 | 1 | 10µs | 10µs | getcwd (xsub) | Cwd::
1 | 1 | 1 | 10µs | 10µs | CORE:fteexec (opcode) | Cwd::
1 | 1 | 1 | 8µs | 46µs | BEGIN@5 | Cwd::
1 | 1 | 1 | 8µs | 23µs | BEGIN@4 | Cwd::
1 | 1 | 1 | 5µs | 5µs | CORE:regcomp (opcode) | Cwd::
1 | 1 | 1 | 4µs | 4µs | BEGIN@42 | Cwd::
1 | 1 | 1 | 1µs | 1µs | CORE:match (opcode) | Cwd::
0 | 0 | 0 | 0s | 0s | __ANON__[:253] | 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 | _win32_cwd_simple | 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 | 2 | 25µs | 2 | 36µs | # spent 24µs (13+12) within Cwd::BEGIN@3 which was called:
# once (13µs+12µs) by Module::Metadata::BEGIN@29 at line 3 # spent 24µs making 1 call to Cwd::BEGIN@3
# spent 12µs making 1 call to strict::import |
4 | 2 | 25µs | 2 | 38µs | # spent 23µs (8+15) within Cwd::BEGIN@4 which was called:
# once (8µs+15µs) by Module::Metadata::BEGIN@29 at line 4 # spent 23µs making 1 call to Cwd::BEGIN@4
# spent 15µs making 1 call to Exporter::import |
5 | 2 | 188µs | 2 | 85µs | # spent 46µs (8+38) within Cwd::BEGIN@5 which was called:
# once (8µs+38µs) by Module::Metadata::BEGIN@29 at line 5 # spent 46µs making 1 call to Cwd::BEGIN@5
# spent 38µs making 1 call to vars::import |
6 | |||||
7 | 1 | 500ns | $VERSION = '3.48'; | ||
8 | 1 | 200ns | my $xs_version = $VERSION; | ||
9 | 1 | 800ns | $VERSION =~ tr/_//; | ||
10 | |||||
11 | 1 | 8µs | @ISA = qw/ Exporter /; | ||
12 | 1 | 700ns | @EXPORT = qw(cwd getcwd fastcwd fastgetcwd); | ||
13 | 1 | 1µs | push @EXPORT, qw(getdcwd) if $^O eq 'MSWin32'; | ||
14 | 1 | 700ns | @EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath); | ||
15 | |||||
16 | # sys_cwd may keep the builtin command | ||||
17 | |||||
18 | # All the functionality of this module may provided by builtins, | ||||
19 | # there is no sense to process the rest of the file. | ||||
20 | # The best choice may be to have this in BEGIN, but how to return from BEGIN? | ||||
21 | |||||
22 | 1 | 200ns | if ($^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 | 100ns | my $use_vms_feature; | ||
42 | # spent 4µs within Cwd::BEGIN@42 which was called:
# once (4µs+0s) by Module::Metadata::BEGIN@29 at line 48 | ||||
43 | 1 | 5µs | if ($^O eq 'VMS') { | ||
44 | if (eval { local $SIG{__DIE__}; require VMS::Feature; }) { | ||||
45 | $use_vms_feature = 1; | ||||
46 | } | ||||
47 | } | ||||
48 | 1 | 2.16ms | 1 | 4µs | } # spent 4µs 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 | 500ns | unless (defined &getcwd) { | ||
78 | eval { | ||||
79 | if ( $] >= 5.006 ) { | ||||
80 | require XSLoader; | ||||
81 | XSLoader::load( __PACKAGE__, $xs_version); | ||||
82 | } else { | ||||
83 | require DynaLoader; | ||||
84 | push @ISA, 'DynaLoader'; | ||||
85 | __PACKAGE__->bootstrap( $xs_version ); | ||||
86 | } | ||||
87 | }; | ||||
88 | } | ||||
89 | |||||
90 | # Big nasty table of function aliases | ||||
91 | 1 | 7µs | my %METHOD_MAP = | ||
92 | ( | ||||
93 | VMS => | ||||
94 | { | ||||
95 | cwd => '_vms_cwd', | ||||
96 | getcwd => '_vms_cwd', | ||||
97 | fastcwd => '_vms_cwd', | ||||
98 | fastgetcwd => '_vms_cwd', | ||||
99 | abs_path => '_vms_abs_path', | ||||
100 | fast_abs_path => '_vms_abs_path', | ||||
101 | }, | ||||
102 | |||||
103 | MSWin32 => | ||||
104 | { | ||||
105 | # We assume that &_NT_cwd is defined as an XSUB or in the core. | ||||
106 | cwd => '_NT_cwd', | ||||
107 | getcwd => '_NT_cwd', | ||||
108 | fastcwd => '_NT_cwd', | ||||
109 | fastgetcwd => '_NT_cwd', | ||||
110 | abs_path => 'fast_abs_path', | ||||
111 | realpath => 'fast_abs_path', | ||||
112 | }, | ||||
113 | |||||
114 | dos => | ||||
115 | { | ||||
116 | cwd => '_dos_cwd', | ||||
117 | getcwd => '_dos_cwd', | ||||
118 | fastgetcwd => '_dos_cwd', | ||||
119 | fastcwd => '_dos_cwd', | ||||
120 | abs_path => 'fast_abs_path', | ||||
121 | }, | ||||
122 | |||||
123 | # QNX4. QNX6 has a $os of 'nto'. | ||||
124 | qnx => | ||||
125 | { | ||||
126 | cwd => '_qnx_cwd', | ||||
127 | getcwd => '_qnx_cwd', | ||||
128 | fastgetcwd => '_qnx_cwd', | ||||
129 | fastcwd => '_qnx_cwd', | ||||
130 | abs_path => '_qnx_abs_path', | ||||
131 | fast_abs_path => '_qnx_abs_path', | ||||
132 | }, | ||||
133 | |||||
134 | cygwin => | ||||
135 | { | ||||
136 | getcwd => 'cwd', | ||||
137 | fastgetcwd => 'cwd', | ||||
138 | fastcwd => 'cwd', | ||||
139 | abs_path => 'fast_abs_path', | ||||
140 | realpath => 'fast_abs_path', | ||||
141 | }, | ||||
142 | |||||
143 | epoc => | ||||
144 | { | ||||
145 | cwd => '_epoc_cwd', | ||||
146 | getcwd => '_epoc_cwd', | ||||
147 | fastgetcwd => '_epoc_cwd', | ||||
148 | fastcwd => '_epoc_cwd', | ||||
149 | abs_path => 'fast_abs_path', | ||||
150 | }, | ||||
151 | |||||
152 | MacOS => | ||||
153 | { | ||||
154 | getcwd => 'cwd', | ||||
155 | fastgetcwd => 'cwd', | ||||
156 | fastcwd => 'cwd', | ||||
157 | abs_path => 'fast_abs_path', | ||||
158 | }, | ||||
159 | ); | ||||
160 | |||||
161 | 1 | 800ns | $METHOD_MAP{NT} = $METHOD_MAP{MSWin32}; | ||
162 | |||||
163 | # Find the pwd command in the expected locations. We assume these | ||||
164 | # are safe. This prevents _backtick_pwd() consulting $ENV{PATH} | ||||
165 | # so everything works under taint mode. | ||||
166 | 1 | 0s | my $pwd_cmd; | ||
167 | 1 | 400ns | foreach my $try ('/bin/pwd', | ||
168 | '/usr/bin/pwd', | ||||
169 | '/QOpenSys/bin/pwd', # OS/400 PASE. | ||||
170 | ) { | ||||
171 | |||||
172 | 1 | 15µs | 1 | 10µs | if( -x $try ) { # spent 10µs making 1 call to Cwd::CORE:fteexec |
173 | 1 | 200ns | $pwd_cmd = $try; | ||
174 | 1 | 1µs | last; | ||
175 | } | ||||
176 | } | ||||
177 | |||||
178 | # Android has a built-in pwd. Using $pwd_cmd will DTRT if | ||||
179 | # this perl was compiled with -Dd_useshellcmds, which is the | ||||
180 | # default for Android, but the block below is needed for the | ||||
181 | # miniperl running on the host when cross-compiling, and | ||||
182 | # potentially for native builds with -Ud_useshellcmds. | ||||
183 | 1 | 5µs | 1 | 1µs | if ($^O =~ /android/) { # spent 1µs making 1 call to Cwd::CORE:match |
184 | # If targetsh is executable, then we're either a full | ||||
185 | # perl, or a miniperl for a native build. | ||||
186 | if (-x $Config::Config{targetsh}) { | ||||
187 | $pwd_cmd = "$Config::Config{targetsh} -c pwd" | ||||
188 | } | ||||
189 | else { | ||||
190 | my $sh = $Config::Config{sh} || (-x '/system/bin/sh' ? '/system/bin/sh' : 'sh'); | ||||
191 | $pwd_cmd = "$sh -c pwd" | ||||
192 | } | ||||
193 | } | ||||
194 | |||||
195 | 1 | 400ns | my $found_pwd_cmd = defined($pwd_cmd); | ||
196 | 1 | 100ns | unless ($pwd_cmd) { | ||
197 | # Isn't this wrong? _backtick_pwd() will fail if someone has | ||||
198 | # pwd in their path but it is not /bin/pwd or /usr/bin/pwd? | ||||
199 | # See [perl #16774]. --jhi | ||||
200 | $pwd_cmd = 'pwd'; | ||||
201 | } | ||||
202 | |||||
203 | # Lazy-load Carp | ||||
204 | sub _carp { require Carp; Carp::carp(@_) } | ||||
205 | sub _croak { require Carp; Carp::croak(@_) } | ||||
206 | |||||
207 | # The 'natural and safe form' for UNIX (pwd may be setuid root) | ||||
208 | sub _backtick_pwd { | ||||
209 | # Localize %ENV entries in a way that won't create new hash keys | ||||
210 | my @localize = grep exists $ENV{$_}, qw(PATH IFS CDPATH ENV BASH_ENV); | ||||
211 | local @ENV{@localize}; | ||||
212 | |||||
213 | my $cwd = `$pwd_cmd`; | ||||
214 | # Belt-and-suspenders in case someone said "undef $/". | ||||
215 | local $/ = "\n"; | ||||
216 | # `pwd` may fail e.g. if the disk is full | ||||
217 | chomp($cwd) if defined $cwd; | ||||
218 | $cwd; | ||||
219 | } | ||||
220 | |||||
221 | # Since some ports may predefine cwd internally (e.g., NT) | ||||
222 | # we take care not to override an existing definition for cwd(). | ||||
223 | |||||
224 | 1 | 1µs | unless ($METHOD_MAP{$^O}{cwd} or defined &cwd) { | ||
225 | # The pwd command is not available in some chroot(2)'ed environments | ||||
226 | 1 | 6µs | 1 | 4µs | my $sep = $Config::Config{path_sep} || ':'; # spent 4µs making 1 call to Config::FETCH |
227 | 1 | 500ns | my $os = $^O; # Protect $^O from tainting | ||
228 | |||||
229 | # Try again to find a pwd, this time searching the whole PATH. | ||||
230 | 1 | 900ns | if (defined $ENV{PATH} and $os ne 'MSWin32') { # no pwd on Windows | ||
231 | 1 | 11µs | 1 | 5µs | my @candidates = split($sep, $ENV{PATH}); # spent 5µs making 1 call to Cwd::CORE:regcomp |
232 | 1 | 1µs | while (!$found_pwd_cmd and @candidates) { | ||
233 | my $candidate = shift @candidates; | ||||
234 | $found_pwd_cmd = 1 if -x "$candidate/pwd"; | ||||
235 | } | ||||
236 | } | ||||
237 | |||||
238 | # MacOS has some special magic to make `pwd` work. | ||||
239 | 1 | 1µs | if( $os eq 'MacOS' || $found_pwd_cmd ) | ||
240 | { | ||||
241 | *cwd = \&_backtick_pwd; | ||||
242 | } | ||||
243 | else { | ||||
244 | *cwd = \&getcwd; | ||||
245 | } | ||||
246 | } | ||||
247 | |||||
248 | 1 | 500ns | if ($^O eq 'cygwin') { | ||
249 | # We need to make sure cwd() is called with no args, because it's | ||||
250 | # got an arg-less prototype and will die if args are present. | ||||
251 | local $^W = 0; | ||||
252 | my $orig_cwd = \&cwd; | ||||
253 | *cwd = sub { &$orig_cwd() } | ||||
254 | } | ||||
255 | |||||
256 | # set a reasonable (and very safe) default for fastgetcwd, in case it | ||||
257 | # isn't redefined later (20001212 rspier) | ||||
258 | 1 | 400ns | *fastgetcwd = \&cwd; | ||
259 | |||||
260 | # A non-XS version of getcwd() - also used to bootstrap the perl build | ||||
261 | # process, when miniperl is running and no XS loading happens. | ||||
262 | sub _perl_getcwd | ||||
263 | { | ||||
264 | abs_path('.'); | ||||
265 | } | ||||
266 | |||||
267 | # By John Bazik | ||||
268 | # | ||||
269 | # Usage: $cwd = &fastcwd; | ||||
270 | # | ||||
271 | # This is a faster version of getcwd. It's also more dangerous because | ||||
272 | # you might chdir out of a directory that you can't chdir back into. | ||||
273 | |||||
274 | sub fastcwd_ { | ||||
275 | my($odev, $oino, $cdev, $cino, $tdev, $tino); | ||||
276 | my(@path, $path); | ||||
277 | local(*DIR); | ||||
278 | |||||
279 | my($orig_cdev, $orig_cino) = stat('.'); | ||||
280 | ($cdev, $cino) = ($orig_cdev, $orig_cino); | ||||
281 | for (;;) { | ||||
282 | my $direntry; | ||||
283 | ($odev, $oino) = ($cdev, $cino); | ||||
284 | CORE::chdir('..') || return undef; | ||||
285 | ($cdev, $cino) = stat('.'); | ||||
286 | last if $odev == $cdev && $oino == $cino; | ||||
287 | opendir(DIR, '.') || return undef; | ||||
288 | for (;;) { | ||||
289 | $direntry = readdir(DIR); | ||||
290 | last unless defined $direntry; | ||||
291 | next if $direntry eq '.'; | ||||
292 | next if $direntry eq '..'; | ||||
293 | |||||
294 | ($tdev, $tino) = lstat($direntry); | ||||
295 | last unless $tdev != $odev || $tino != $oino; | ||||
296 | } | ||||
297 | closedir(DIR); | ||||
298 | return undef unless defined $direntry; # should never happen | ||||
299 | unshift(@path, $direntry); | ||||
300 | } | ||||
301 | $path = '/' . join('/', @path); | ||||
302 | if ($^O eq 'apollo') { $path = "/".$path; } | ||||
303 | # At this point $path may be tainted (if tainting) and chdir would fail. | ||||
304 | # Untaint it then check that we landed where we started. | ||||
305 | $path =~ /^(.*)\z/s # untaint | ||||
306 | && CORE::chdir($1) or return undef; | ||||
307 | ($cdev, $cino) = stat('.'); | ||||
308 | die "Unstable directory path, current directory changed unexpectedly" | ||||
309 | if $cdev != $orig_cdev || $cino != $orig_cino; | ||||
310 | $path; | ||||
311 | } | ||||
312 | 1 | 300ns | if (not defined &fastcwd) { *fastcwd = \&fastcwd_ } | ||
313 | |||||
314 | # Keeps track of current working directory in PWD environment var | ||||
315 | # Usage: | ||||
316 | # use Cwd 'chdir'; | ||||
317 | # chdir $newdir; | ||||
318 | |||||
319 | 1 | 200ns | my $chdir_init = 0; | ||
320 | |||||
321 | sub chdir_init { | ||||
322 | if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos' and $^O ne 'MSWin32') { | ||||
323 | my($dd,$di) = stat('.'); | ||||
324 | my($pd,$pi) = stat($ENV{'PWD'}); | ||||
325 | if (!defined $dd or !defined $pd or $di != $pi or $dd != $pd) { | ||||
326 | $ENV{'PWD'} = cwd(); | ||||
327 | } | ||||
328 | } | ||||
329 | else { | ||||
330 | my $wd = cwd(); | ||||
331 | $wd = Win32::GetFullPathName($wd) if $^O eq 'MSWin32'; | ||||
332 | $ENV{'PWD'} = $wd; | ||||
333 | } | ||||
334 | # Strip an automounter prefix (where /tmp_mnt/foo/bar == /foo/bar) | ||||
335 | if ($^O ne 'MSWin32' and $ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) { | ||||
336 | my($pd,$pi) = stat($2); | ||||
337 | my($dd,$di) = stat($1); | ||||
338 | if (defined $pd and defined $dd and $di == $pi and $dd == $pd) { | ||||
339 | $ENV{'PWD'}="$2$3"; | ||||
340 | } | ||||
341 | } | ||||
342 | $chdir_init = 1; | ||||
343 | } | ||||
344 | |||||
345 | sub chdir { | ||||
346 | my $newdir = @_ ? shift : ''; # allow for no arg (chdir to HOME dir) | ||||
347 | $newdir =~ s|///*|/|g unless $^O eq 'MSWin32'; | ||||
348 | chdir_init() unless $chdir_init; | ||||
349 | my $newpwd; | ||||
350 | if ($^O eq 'MSWin32') { | ||||
351 | # get the full path name *before* the chdir() | ||||
352 | $newpwd = Win32::GetFullPathName($newdir); | ||||
353 | } | ||||
354 | |||||
355 | return 0 unless CORE::chdir $newdir; | ||||
356 | |||||
357 | if ($^O eq 'VMS') { | ||||
358 | return $ENV{'PWD'} = $ENV{'DEFAULT'} | ||||
359 | } | ||||
360 | elsif ($^O eq 'MacOS') { | ||||
361 | return $ENV{'PWD'} = cwd(); | ||||
362 | } | ||||
363 | elsif ($^O eq 'MSWin32') { | ||||
364 | $ENV{'PWD'} = $newpwd; | ||||
365 | return 1; | ||||
366 | } | ||||
367 | |||||
368 | if (ref $newdir eq 'GLOB') { # in case a file/dir handle is passed in | ||||
369 | $ENV{'PWD'} = cwd(); | ||||
370 | } elsif ($newdir =~ m#^/#s) { | ||||
371 | $ENV{'PWD'} = $newdir; | ||||
372 | } else { | ||||
373 | my @curdir = split(m#/#,$ENV{'PWD'}); | ||||
374 | @curdir = ('') unless @curdir; | ||||
375 | my $component; | ||||
376 | foreach $component (split(m#/#, $newdir)) { | ||||
377 | next if $component eq '.'; | ||||
378 | pop(@curdir),next if $component eq '..'; | ||||
379 | push(@curdir,$component); | ||||
380 | } | ||||
381 | $ENV{'PWD'} = join('/',@curdir) || '/'; | ||||
382 | } | ||||
383 | 1; | ||||
384 | } | ||||
385 | |||||
386 | sub _perl_abs_path | ||||
387 | { | ||||
388 | my $start = @_ ? shift : '.'; | ||||
389 | my($dotdots, $cwd, @pst, @cst, $dir, @tst); | ||||
390 | |||||
391 | unless (@cst = stat( $start )) | ||||
392 | { | ||||
393 | _carp("stat($start): $!"); | ||||
394 | return ''; | ||||
395 | } | ||||
396 | |||||
397 | unless (-d _) { | ||||
398 | # Make sure we can be invoked on plain files, not just directories. | ||||
399 | # NOTE that this routine assumes that '/' is the only directory separator. | ||||
400 | |||||
401 | my ($dir, $file) = $start =~ m{^(.*)/(.+)$} | ||||
402 | or return cwd() . '/' . $start; | ||||
403 | |||||
404 | # Can't use "-l _" here, because the previous stat was a stat(), not an lstat(). | ||||
405 | if (-l $start) { | ||||
406 | my $link_target = readlink($start); | ||||
407 | die "Can't resolve link $start: $!" unless defined $link_target; | ||||
408 | |||||
409 | require File::Spec; | ||||
410 | $link_target = $dir . '/' . $link_target | ||||
411 | unless File::Spec->file_name_is_absolute($link_target); | ||||
412 | |||||
413 | return abs_path($link_target); | ||||
414 | } | ||||
415 | |||||
416 | return $dir ? abs_path($dir) . "/$file" : "/$file"; | ||||
417 | } | ||||
418 | |||||
419 | $cwd = ''; | ||||
420 | $dotdots = $start; | ||||
421 | do | ||||
422 | { | ||||
423 | $dotdots .= '/..'; | ||||
424 | @pst = @cst; | ||||
425 | local *PARENT; | ||||
426 | unless (opendir(PARENT, $dotdots)) | ||||
427 | { | ||||
428 | # probably a permissions issue. Try the native command. | ||||
429 | require File::Spec; | ||||
430 | return File::Spec->rel2abs( $start, _backtick_pwd() ); | ||||
431 | } | ||||
432 | unless (@cst = stat($dotdots)) | ||||
433 | { | ||||
434 | _carp("stat($dotdots): $!"); | ||||
435 | closedir(PARENT); | ||||
436 | return ''; | ||||
437 | } | ||||
438 | if ($pst[0] == $cst[0] && $pst[1] == $cst[1]) | ||||
439 | { | ||||
440 | $dir = undef; | ||||
441 | } | ||||
442 | else | ||||
443 | { | ||||
444 | do | ||||
445 | { | ||||
446 | unless (defined ($dir = readdir(PARENT))) | ||||
447 | { | ||||
448 | _carp("readdir($dotdots): $!"); | ||||
449 | closedir(PARENT); | ||||
450 | return ''; | ||||
451 | } | ||||
452 | $tst[0] = $pst[0]+1 unless (@tst = lstat("$dotdots/$dir")) | ||||
453 | } | ||||
454 | while ($dir eq '.' || $dir eq '..' || $tst[0] != $pst[0] || | ||||
455 | $tst[1] != $pst[1]); | ||||
456 | } | ||||
457 | $cwd = (defined $dir ? "$dir" : "" ) . "/$cwd" ; | ||||
458 | closedir(PARENT); | ||||
459 | } while (defined $dir); | ||||
460 | chop($cwd) unless $cwd eq '/'; # drop the trailing / | ||||
461 | $cwd; | ||||
462 | } | ||||
463 | |||||
464 | 1 | 100ns | my $Curdir; | ||
465 | sub fast_abs_path { | ||||
466 | local $ENV{PWD} = $ENV{PWD} || ''; # Guard against clobberage | ||||
467 | my $cwd = getcwd(); | ||||
468 | require File::Spec; | ||||
469 | my $path = @_ ? shift : ($Curdir ||= File::Spec->curdir); | ||||
470 | |||||
471 | # Detaint else we'll explode in taint mode. This is safe because | ||||
472 | # we're not doing anything dangerous with it. | ||||
473 | ($path) = $path =~ /(.*)/s; | ||||
474 | ($cwd) = $cwd =~ /(.*)/s; | ||||
475 | |||||
476 | unless (-e $path) { | ||||
477 | _croak("$path: No such file or directory"); | ||||
478 | } | ||||
479 | |||||
480 | unless (-d _) { | ||||
481 | # Make sure we can be invoked on plain files, not just directories. | ||||
482 | |||||
483 | my ($vol, $dir, $file) = File::Spec->splitpath($path); | ||||
484 | return File::Spec->catfile($cwd, $path) unless length $dir; | ||||
485 | |||||
486 | if (-l $path) { | ||||
487 | my $link_target = readlink($path); | ||||
488 | die "Can't resolve link $path: $!" unless defined $link_target; | ||||
489 | |||||
490 | $link_target = File::Spec->catpath($vol, $dir, $link_target) | ||||
491 | unless File::Spec->file_name_is_absolute($link_target); | ||||
492 | |||||
493 | return fast_abs_path($link_target); | ||||
494 | } | ||||
495 | |||||
496 | return $dir eq File::Spec->rootdir | ||||
497 | ? File::Spec->catpath($vol, $dir, $file) | ||||
498 | : fast_abs_path(File::Spec->catpath($vol, $dir, '')) . '/' . $file; | ||||
499 | } | ||||
500 | |||||
501 | if (!CORE::chdir($path)) { | ||||
502 | _croak("Cannot chdir to $path: $!"); | ||||
503 | } | ||||
504 | my $realpath = getcwd(); | ||||
505 | if (! ((-d $cwd) && (CORE::chdir($cwd)))) { | ||||
506 | _croak("Cannot chdir back to $cwd: $!"); | ||||
507 | } | ||||
508 | $realpath; | ||||
509 | } | ||||
510 | |||||
511 | # added function alias to follow principle of least surprise | ||||
512 | # based on previous aliasing. --tchrist 27-Jan-00 | ||||
513 | 1 | 200ns | *fast_realpath = \&fast_abs_path; | ||
514 | |||||
515 | # --- PORTING SECTION --- | ||||
516 | |||||
517 | # VMS: $ENV{'DEFAULT'} points to default directory at all times | ||||
518 | # 06-Mar-1996 Charles Bailey bailey@newman.upenn.edu | ||||
519 | # Note: Use of Cwd::chdir() causes the logical name PWD to be defined | ||||
520 | # in the process logical name table as the default device and directory | ||||
521 | # seen by Perl. This may not be the same as the default device | ||||
522 | # and directory seen by DCL after Perl exits, since the effects | ||||
523 | # the CRTL chdir() function persist only until Perl exits. | ||||
524 | |||||
525 | sub _vms_cwd { | ||||
526 | return $ENV{'DEFAULT'}; | ||||
527 | } | ||||
528 | |||||
529 | sub _vms_abs_path { | ||||
530 | return $ENV{'DEFAULT'} unless @_; | ||||
531 | my $path = shift; | ||||
532 | |||||
533 | my $efs = _vms_efs; | ||||
534 | my $unix_rpt = _vms_unix_rpt; | ||||
535 | |||||
536 | if (defined &VMS::Filespec::vmsrealpath) { | ||||
537 | my $path_unix = 0; | ||||
538 | my $path_vms = 0; | ||||
539 | |||||
540 | $path_unix = 1 if ($path =~ m#(?<=\^)/#); | ||||
541 | $path_unix = 1 if ($path =~ /^\.\.?$/); | ||||
542 | $path_vms = 1 if ($path =~ m#[\[<\]]#); | ||||
543 | $path_vms = 1 if ($path =~ /^--?$/); | ||||
544 | |||||
545 | my $unix_mode = $path_unix; | ||||
546 | if ($efs) { | ||||
547 | # In case of a tie, the Unix report mode decides. | ||||
548 | if ($path_vms == $path_unix) { | ||||
549 | $unix_mode = $unix_rpt; | ||||
550 | } else { | ||||
551 | $unix_mode = 0 if $path_vms; | ||||
552 | } | ||||
553 | } | ||||
554 | |||||
555 | if ($unix_mode) { | ||||
556 | # Unix format | ||||
557 | return VMS::Filespec::unixrealpath($path); | ||||
558 | } | ||||
559 | |||||
560 | # VMS format | ||||
561 | |||||
562 | my $new_path = VMS::Filespec::vmsrealpath($path); | ||||
563 | |||||
564 | # Perl expects directories to be in directory format | ||||
565 | $new_path = VMS::Filespec::pathify($new_path) if -d $path; | ||||
566 | return $new_path; | ||||
567 | } | ||||
568 | |||||
569 | # Fallback to older algorithm if correct ones are not | ||||
570 | # available. | ||||
571 | |||||
572 | if (-l $path) { | ||||
573 | my $link_target = readlink($path); | ||||
574 | die "Can't resolve link $path: $!" unless defined $link_target; | ||||
575 | |||||
576 | return _vms_abs_path($link_target); | ||||
577 | } | ||||
578 | |||||
579 | # may need to turn foo.dir into [.foo] | ||||
580 | my $pathified = VMS::Filespec::pathify($path); | ||||
581 | $path = $pathified if defined $pathified; | ||||
582 | |||||
583 | return VMS::Filespec::rmsexpand($path); | ||||
584 | } | ||||
585 | |||||
586 | sub _os2_cwd { | ||||
587 | $ENV{'PWD'} = `cmd /c cd`; | ||||
588 | chomp $ENV{'PWD'}; | ||||
589 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
590 | return $ENV{'PWD'}; | ||||
591 | } | ||||
592 | |||||
593 | sub _win32_cwd_simple { | ||||
594 | $ENV{'PWD'} = `cd`; | ||||
595 | chomp $ENV{'PWD'}; | ||||
596 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
597 | return $ENV{'PWD'}; | ||||
598 | } | ||||
599 | |||||
600 | sub _win32_cwd { | ||||
601 | # Need to avoid taking any sort of reference to the typeglob or the code in | ||||
602 | # the optree, so that this tests the runtime state of things, as the | ||||
603 | # ExtUtils::MakeMaker tests for "miniperl" need to be able to fake things at | ||||
604 | # runtime by deleting the subroutine. *foo{THING} syntax on a symbol table | ||||
605 | # lookup avoids needing a string eval, which has been reported to cause | ||||
606 | # problems (for reasons that we haven't been able to get to the bottom of - | ||||
607 | # rt.cpan.org #56225) | ||||
608 | if (*{$DynaLoader::{boot_DynaLoader}}{CODE}) { | ||||
609 | $ENV{'PWD'} = Win32::GetCwd(); | ||||
610 | } | ||||
611 | else { # miniperl | ||||
612 | chomp($ENV{'PWD'} = `cd`); | ||||
613 | } | ||||
614 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
615 | return $ENV{'PWD'}; | ||||
616 | } | ||||
617 | |||||
618 | 1 | 400ns | *_NT_cwd = defined &Win32::GetCwd ? \&_win32_cwd : \&_win32_cwd_simple; | ||
619 | |||||
620 | sub _dos_cwd { | ||||
621 | if (!defined &Dos::GetCwd) { | ||||
622 | $ENV{'PWD'} = `command /c cd`; | ||||
623 | chomp $ENV{'PWD'}; | ||||
624 | $ENV{'PWD'} =~ s:\\:/:g ; | ||||
625 | } else { | ||||
626 | $ENV{'PWD'} = Dos::GetCwd(); | ||||
627 | } | ||||
628 | return $ENV{'PWD'}; | ||||
629 | } | ||||
630 | |||||
631 | sub _qnx_cwd { | ||||
632 | local $ENV{PATH} = ''; | ||||
633 | local $ENV{CDPATH} = ''; | ||||
634 | local $ENV{ENV} = ''; | ||||
635 | $ENV{'PWD'} = `/usr/bin/fullpath -t`; | ||||
636 | chomp $ENV{'PWD'}; | ||||
637 | return $ENV{'PWD'}; | ||||
638 | } | ||||
639 | |||||
640 | sub _qnx_abs_path { | ||||
641 | local $ENV{PATH} = ''; | ||||
642 | local $ENV{CDPATH} = ''; | ||||
643 | local $ENV{ENV} = ''; | ||||
644 | my $path = @_ ? shift : '.'; | ||||
645 | local *REALPATH; | ||||
646 | |||||
647 | defined( open(REALPATH, '-|') || exec '/usr/bin/fullpath', '-t', $path ) or | ||||
648 | die "Can't open /usr/bin/fullpath: $!"; | ||||
649 | my $realpath = <REALPATH>; | ||||
650 | close REALPATH; | ||||
651 | chomp $realpath; | ||||
652 | return $realpath; | ||||
653 | } | ||||
654 | |||||
655 | sub _epoc_cwd { | ||||
656 | $ENV{'PWD'} = EPOC::getcwd(); | ||||
657 | return $ENV{'PWD'}; | ||||
658 | } | ||||
659 | |||||
660 | # Now that all the base-level functions are set up, alias the | ||||
661 | # user-level functions to the right places | ||||
662 | |||||
663 | 1 | 600ns | if (exists $METHOD_MAP{$^O}) { | ||
664 | 1 | 400ns | my $map = $METHOD_MAP{$^O}; | ||
665 | 1 | 1µs | foreach my $name (keys %$map) { | ||
666 | local $^W = 0; # assignments trigger 'subroutine redefined' warning | ||||
667 | 2 | 97µs | 2 | 32µs | # spent 22µs (13+10) within Cwd::BEGIN@667 which was called:
# once (13µs+10µs) by Module::Metadata::BEGIN@29 at line 667 # spent 22µs making 1 call to Cwd::BEGIN@667
# spent 10µs making 1 call to strict::unimport |
668 | *{$name} = \&{$map->{$name}}; | ||||
669 | } | ||||
670 | } | ||||
671 | |||||
672 | # In case the XS version doesn't load. | ||||
673 | 1 | 300ns | *abs_path = \&_perl_abs_path unless defined &abs_path; | ||
674 | 1 | 100ns | *getcwd = \&_perl_getcwd unless defined &getcwd; | ||
675 | |||||
676 | # added function alias for those of us more | ||||
677 | # used to the libc function. --tchrist 27-Jan-00 | ||||
678 | 1 | 200ns | *realpath = \&abs_path; | ||
679 | |||||
680 | 1 | 32µs | 1; | ||
# spent 10µs within Cwd::CORE:fteexec which was called:
# once (10µs+0s) by Module::Metadata::BEGIN@29 at line 172 | |||||
# spent 1µs within Cwd::CORE:match which was called:
# once (1µs+0s) by Module::Metadata::BEGIN@29 at line 183 | |||||
# spent 5µs within Cwd::CORE:regcomp which was called:
# once (5µs+0s) by Module::Metadata::BEGIN@29 at line 231 | |||||
# spent 2.17ms within Cwd::abs_path which was called 2 times, avg 1.09ms/call:
# once (1.13ms+0s) by FindBin::init at line 158 of FindBin.pm
# once (1.04ms+0s) by FindBin::init at line 161 of FindBin.pm | |||||
# spent 24µs within Cwd::bootstrap which was called:
# once (24µs+0s) by DynaLoader::bootstrap at line 210 of DynaLoader.pm | |||||
# spent 10µs within Cwd::getcwd which was called:
# once (10µs+0s) by FindBin::cwd2 at line 101 of FindBin.pm |