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a0d0e21e LW |
1 | package File::Find; |
2 | require 5.000; | |
3 | require Exporter; | |
6280b799 | 4 | require Cwd; |
a0d0e21e | 5 | |
f06db76b AD |
6 | =head1 NAME |
7 | ||
8 | find - traverse a file tree | |
9 | ||
10 | finddepth - traverse a directory structure depth-first | |
11 | ||
12 | =head1 SYNOPSIS | |
13 | ||
14 | use File::Find; | |
81793b90 | 15 | find(\&wanted, '/foo', '/bar'); |
f06db76b | 16 | sub wanted { ... } |
237437d0 | 17 | |
f06db76b | 18 | use File::Find; |
81793b90 | 19 | finddepth(\&wanted, '/foo', '/bar'); |
f06db76b | 20 | sub wanted { ... } |
81793b90 GS |
21 | |
22 | use File::Find; | |
23 | find({ wanted => \&process, follow => 1 }, '.'); | |
f06db76b AD |
24 | |
25 | =head1 DESCRIPTION | |
26 | ||
20408e3c | 27 | The first argument to find() is either a hash reference describing the |
81793b90 | 28 | operations to be performed for each file, or a code reference. |
20408e3c | 29 | |
81793b90 GS |
30 | Here are the possible keys for the hash: |
31 | ||
32 | =over 3 | |
33 | ||
34 | =item C<wanted> | |
35 | ||
36 | The value should be a code reference. This code reference is called | |
37 | I<the wanted() function> below. | |
38 | ||
39 | =item C<bydepth> | |
40 | ||
41 | Reports the name of a directory only AFTER all its entries | |
42 | have been reported. Entry point finddepth() is a shortcut for | |
43 | specifying C<{ bydepth => 1 }> in the first argument of find(). | |
44 | ||
45 | =item C<follow> | |
46 | ||
47 | Causes symbolic links to be followed. Since directory trees with symbolic | |
48 | links (followed) may contain files more than once and may even have | |
49 | cycles, a hash has to be built up with an entry for each file. | |
50 | This might be expensive both in space and time for a large | |
51 | directory tree. See I<follow_fast> and I<follow_skip> below. | |
52 | If either I<follow> or I<follow_fast> is in effect: | |
53 | ||
54 | =over 6 | |
55 | ||
56 | =item | |
57 | ||
58 | It is guarantueed that an I<lstat> has been called before the user's | |
59 | I<wanted()> function is called. This enables fast file checks involving S< _>. | |
60 | ||
61 | =item | |
62 | ||
63 | There is a variable C<$File::Find::fullname> which holds the absolute | |
64 | pathname of the file with all symbolic links resolved | |
65 | ||
66 | =back | |
67 | ||
68 | =item C<follow_fast> | |
69 | ||
70 | This is similar to I<follow> except that it may report some files | |
71 | more than once. It does detect cycles however. | |
72 | Since only symbolic links have to be hashed, this is | |
73 | much cheaper both in space and time. | |
74 | If processing a file more than once (by the user's I<wanted()> function) | |
75 | is worse than just taking time, the option I<follow> should be used. | |
76 | ||
77 | =item C<follow_skip> | |
78 | ||
79 | C<follow_skip==1>, which is the default, causes all files which are | |
80 | neither directories nor symbolic links to be ignored if they are about | |
81 | to be processed a second time. If a directory or a symbolic link | |
82 | are about to be processed a second time, File::Find dies. | |
83 | C<follow_skip==0> causes File::Find to die if any file is about to be | |
84 | processed a second time. | |
85 | C<follow_skip==2> causes File::Find to ignore any duplicate files and | |
86 | dirctories but to proceed normally otherwise. | |
20408e3c | 87 | |
f06db76b | 88 | |
81793b90 GS |
89 | =item C<no_chdir> |
90 | ||
91 | Does not C<chdir()> to each directory as it recurses. The wanted() | |
92 | function will need to be aware of this, of course. In this case, | |
93 | C<$_> will be the same as C<$File::Find::name>. | |
94 | ||
95 | =item C<untaint> | |
96 | ||
97 | If find is used in taint-mode (-T command line switch or if EUID != UID | |
98 | or if EGID != GID) then internally directory names have to be untainted | |
99 | before they can be cd'ed to. Therefore they are checked against a regular | |
100 | expression I<untaint_pattern>. Note, that all names passed to the | |
101 | user's I<wanted()> function are still tainted. | |
102 | ||
103 | =item C<untaint_pattern> | |
104 | ||
105 | See above. This should be set using the C<qr> quoting operator. | |
106 | The default is set to C<qr|^([-+@\w./]+)$|>. | |
107 | Note that the paranthesis which are vital. | |
108 | ||
109 | =item C<untaint_skip> | |
110 | ||
111 | If set, directories (subtrees) which fail the I<untaint_pattern> | |
112 | are skipped. The default is to 'die' in such a case. | |
113 | ||
114 | =back | |
115 | ||
116 | The wanted() function does whatever verifications you want. | |
117 | C<$File::Find::dir> contains the current directory name, and C<$_> the | |
118 | current filename within that directory. C<$File::Find::name> contains | |
119 | the complete pathname to the file. You are chdir()'d to C<$File::Find::dir> when | |
120 | the function is called, unless C<no_chdir> was specified. | |
121 | When <follow> or <follow_fast> are in effect there is also a | |
122 | C<$File::Find::fullname>. | |
123 | The function may set C<$File::Find::prune> to prune the tree | |
124 | unless C<bydepth> was specified. | |
47a735e8 | 125 | |
20408e3c | 126 | This library is useful for the C<find2perl> tool, which when fed, |
f06db76b AD |
127 | |
128 | find2perl / -name .nfs\* -mtime +7 \ | |
81793b90 | 129 | -exec rm -f {} \; -o -fstype nfs -prune |
f06db76b AD |
130 | |
131 | produces something like: | |
132 | ||
133 | sub wanted { | |
134 | /^\.nfs.*$/ && | |
81793b90 | 135 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
f06db76b AD |
136 | int(-M _) > 7 && |
137 | unlink($_) | |
138 | || | |
81793b90 | 139 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
f06db76b | 140 | $dev < 0 && |
6280b799 | 141 | ($File::Find::prune = 1); |
f06db76b AD |
142 | } |
143 | ||
81793b90 | 144 | Set the variable C<$File::Find::dont_use_nlink> if you're using AFS, |
6280b799 | 145 | since AFS cheats. |
f06db76b | 146 | |
f06db76b AD |
147 | |
148 | Here's another interesting wanted function. It will find all symlinks | |
149 | that don't resolve: | |
150 | ||
151 | sub wanted { | |
81793b90 | 152 | -l && !-e && print "bogus link: $File::Find::name\n"; |
237437d0 | 153 | } |
f06db76b | 154 | |
81793b90 GS |
155 | See also the script C<pfind> on CPAN for a nice application of this |
156 | module. | |
157 | ||
158 | =head1 CAVEAT | |
159 | ||
160 | Be aware that the option to follow symblic links can be dangerous. | |
161 | Depending on the structure of the directory tree (including symbolic | |
162 | links to directories) you might traverse a given (physical) directory | |
163 | more than once (only if C<follow_fast> is in effect). | |
164 | Furthermore, deleting or changing files in a symbolically linked directory | |
165 | might cause very unpleasant surprises, since you delete or change files | |
166 | in an unknown directory. | |
0530a6c4 | 167 | |
0530a6c4 | 168 | |
f06db76b AD |
169 | =cut |
170 | ||
a0d0e21e | 171 | @ISA = qw(Exporter); |
6280b799 | 172 | @EXPORT = qw(find finddepth); |
173 | ||
a0d0e21e | 174 | |
81793b90 GS |
175 | use strict; |
176 | my $Is_VMS; | |
177 | ||
178 | require File::Basename; | |
179 | ||
180 | my %SLnkSeen; | |
181 | my ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, | |
182 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat); | |
183 | ||
184 | sub contract_name { | |
185 | my ($cdir,$fn) = @_; | |
186 | ||
187 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq '.'; | |
188 | ||
189 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); | |
190 | ||
191 | $fn =~ s|^\./||; | |
192 | ||
193 | my $abs_name= $cdir . $fn; | |
194 | ||
195 | if (substr($fn,0,3) eq '../') { | |
196 | do 1 while ($abs_name=~ s|/(?>[^/]+)/\.\./|/|); | |
197 | } | |
198 | ||
199 | return $abs_name; | |
200 | } | |
201 | ||
202 | ||
203 | sub PathCombine($$) { | |
204 | my ($Base,$Name) = @_; | |
205 | my $AbsName; | |
206 | ||
207 | if (substr($Name,0,1) eq '/') { | |
208 | $AbsName= $Name; | |
209 | } | |
210 | else { | |
211 | $AbsName= contract_name($Base,$Name); | |
212 | } | |
213 | ||
214 | # (simple) check for recursion | |
215 | my $newlen= length($AbsName); | |
216 | if ($newlen <= length($Base)) { | |
217 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') | |
218 | && $AbsName eq substr($Base,0,$newlen)) | |
219 | { | |
220 | return undef; | |
221 | } | |
222 | } | |
223 | return $AbsName; | |
224 | } | |
225 | ||
226 | sub Follow_SymLink($) { | |
227 | my ($AbsName) = @_; | |
228 | ||
229 | my ($NewName,$DEV, $INO); | |
230 | ($DEV, $INO)= lstat $AbsName; | |
231 | ||
232 | while (-l _) { | |
233 | if ($SLnkSeen{$DEV, $INO}++) { | |
234 | if ($follow_skip < 2) { | |
235 | die "$AbsName is encountered a second time"; | |
a0d0e21e LW |
236 | } |
237 | else { | |
81793b90 | 238 | return undef; |
a0d0e21e LW |
239 | } |
240 | } | |
81793b90 GS |
241 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
242 | unless(defined $NewName) { | |
243 | if ($follow_skip < 2) { | |
244 | die "$AbsName is a recursive symbolic link"; | |
245 | } | |
246 | else { | |
247 | return undef; | |
a0d0e21e | 248 | } |
81793b90 GS |
249 | } |
250 | else { | |
251 | $AbsName= $NewName; | |
252 | } | |
253 | ($DEV, $INO) = lstat($AbsName); | |
254 | return undef unless defined $DEV; # dangling symbolic link | |
255 | } | |
256 | ||
257 | if ($full_check && $SLnkSeen{$DEV, $INO}++) { | |
258 | if ($follow_skip < 1) { | |
259 | die "$AbsName encountered a second time"; | |
260 | } | |
261 | else { | |
262 | return undef; | |
263 | } | |
264 | } | |
265 | ||
266 | return $AbsName; | |
267 | } | |
268 | ||
269 | use vars qw/ $dir $name $fullname $prune /; | |
270 | sub _find_dir_symlnk($$$); | |
271 | sub _find_dir($$$); | |
272 | ||
273 | sub _find_opt { | |
274 | my $wanted = shift; | |
275 | die "invalid top directory" unless defined $_[0]; | |
276 | ||
277 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::cwd(); | |
278 | my $cwd_untainted = $cwd; | |
279 | $wanted_callback = $wanted->{wanted}; | |
280 | $bydepth = $wanted->{bydepth}; | |
281 | $no_chdir = $wanted->{no_chdir}; | |
282 | $full_check = $wanted->{follow}; | |
283 | $follow = $full_check || $wanted->{follow_fast}; | |
284 | $follow_skip = $wanted->{follow_skip}; | |
285 | $untaint = $wanted->{untaint}; | |
286 | $untaint_pat = $wanted->{untaint_pattern}; | |
287 | $untaint_skip = $wanted->{untaint_skip}; | |
288 | ||
289 | ||
290 | # a symbolic link to a directory doesn't increase the link count | |
291 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; | |
292 | ||
293 | if ( $untaint ) { | |
294 | $cwd_untainted= $1 if $cwd_untainted =~ m|$untaint_pat|; | |
295 | die "insecure cwd in find(depth)" unless defined($cwd_untainted); | |
296 | } | |
297 | ||
298 | my ($abs_dir, $nlink, $Is_Dir); | |
299 | ||
300 | Proc_Top_Item: | |
301 | foreach my $TOP (@_) { | |
302 | my $top_item = $TOP; | |
303 | $top_item =~ s|/$||; | |
304 | $Is_Dir= 0; | |
305 | ||
306 | if ($follow) { | |
307 | if (substr($top_item,0,1) eq '/') { | |
308 | $abs_dir = $top_item; | |
309 | } | |
310 | elsif ($top_item eq '.') { | |
311 | $abs_dir = $cwd; | |
237437d0 | 312 | } |
81793b90 GS |
313 | else { # care about any ../ |
314 | $abs_dir = contract_name("$cwd/",$top_item); | |
315 | } | |
316 | $abs_dir= Follow_SymLink($abs_dir); | |
317 | unless (defined $abs_dir) { | |
318 | warn "$top_item is a dangling symbolic link\n"; | |
319 | next Proc_Top_Item; | |
320 | } | |
321 | if (-d _) { | |
322 | _find_dir_symlnk($wanted, $abs_dir, $top_item); | |
323 | $Is_Dir= 1; | |
324 | } | |
325 | } | |
326 | else { # no follow | |
327 | $nlink = (lstat $top_item)[3]; | |
328 | unless (defined $nlink) { | |
329 | warn "Can't stat $top_item: $!\n"; | |
330 | next Proc_Top_Item; | |
331 | } | |
332 | if (-d _) { | |
333 | $top_item =~ s/\.dir$// if $Is_VMS; | |
334 | _find_dir($wanted, $top_item, $nlink); | |
335 | $Is_Dir= 1; | |
336 | } | |
237437d0 | 337 | else { |
81793b90 GS |
338 | $abs_dir= $top_item; |
339 | } | |
340 | } | |
341 | ||
342 | unless ($Is_Dir) { | |
343 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { | |
344 | ($dir,$_) = ('.', $top_item); | |
345 | } | |
346 | ||
347 | $abs_dir = $dir; | |
348 | if ($untaint) { | |
349 | my $abs_dir_save = $abs_dir; | |
350 | $abs_dir = $1 if $abs_dir =~ m|$untaint_pat|; | |
351 | unless (defined $abs_dir) { | |
352 | if ($untaint_skip == 0) { | |
353 | die "directory $abs_dir_save is still tainted"; | |
354 | } | |
355 | else { | |
356 | next Proc_Top_Item; | |
357 | } | |
358 | } | |
359 | } | |
360 | ||
361 | unless ($no_chdir or chdir $abs_dir) { | |
362 | warn "Couldn't chdir $abs_dir: $!\n"; | |
363 | next Proc_Top_Item; | |
364 | } | |
365 | ||
366 | $name = $abs_dir; | |
367 | ||
368 | &$wanted_callback; | |
369 | ||
370 | } | |
371 | ||
372 | $no_chdir or chdir $cwd_untainted; | |
373 | } | |
374 | } | |
375 | ||
376 | # API: | |
377 | # $wanted | |
378 | # $p_dir : "parent directory" | |
379 | # $nlink : what came back from the stat | |
380 | # preconditions: | |
381 | # chdir (if not no_chdir) to dir | |
382 | ||
383 | sub _find_dir($$$) { | |
384 | my ($wanted, $p_dir, $nlink) = @_; | |
385 | my ($CdLvl,$Level) = (0,0); | |
386 | my @Stack; | |
387 | my @filenames; | |
388 | my ($subcount,$sub_nlink); | |
389 | my $SE= []; | |
390 | my $dir_name= $p_dir; | |
391 | my $dir_rel= '.'; # directory name relative to current directory | |
392 | ||
393 | local ($dir, $name, $prune, *DIR); | |
394 | ||
395 | unless ($no_chdir or $p_dir eq '.') { | |
396 | my $udir = $p_dir; | |
397 | if ($untaint) { | |
398 | $udir = $1 if $p_dir =~ m|$untaint_pat|; | |
399 | unless (defined $udir) { | |
400 | if ($untaint_skip == 0) { | |
401 | die "directory $p_dir is still tainted"; | |
402 | } | |
403 | else { | |
404 | return; | |
405 | } | |
237437d0 | 406 | } |
a0d0e21e | 407 | } |
81793b90 GS |
408 | unless (chdir $udir) { |
409 | warn "Can't cd to $udir: $!\n"; | |
410 | return; | |
411 | } | |
412 | } | |
413 | ||
414 | while (defined $SE) { | |
415 | unless ($bydepth) { | |
416 | $dir= $p_dir; | |
417 | $name= $dir_name; | |
418 | $_= ($no_chdir ? $dir_name : $dir_rel ); | |
419 | # prune may happen here | |
420 | $prune= 0; | |
421 | &$wanted_callback; | |
422 | next if $prune; | |
423 | } | |
424 | ||
425 | # change to that directory | |
426 | unless ($no_chdir or $dir_rel eq '.') { | |
427 | my $udir= $dir_rel; | |
428 | if ($untaint) { | |
429 | $udir = $1 if $dir_rel =~ m|$untaint_pat|; | |
430 | unless (defined $udir) { | |
431 | if ($untaint_skip == 0) { | |
432 | die "directory ($p_dir/) $dir_rel is still tainted"; | |
433 | } | |
434 | } | |
435 | } | |
436 | unless (chdir $udir) { | |
437 | warn "Can't cd to ($p_dir/) $udir : $!\n"; | |
438 | next; | |
439 | } | |
440 | $CdLvl++; | |
441 | } | |
442 | ||
443 | $dir= $dir_name; | |
444 | ||
445 | # Get the list of files in the current directory. | |
446 | unless (opendir DIR, ($no_chdir ? $dir_name : '.')) { | |
447 | warn "Can't opendir($dir_name): $!\n"; | |
448 | next; | |
449 | } | |
450 | @filenames = readdir DIR; | |
451 | closedir(DIR); | |
452 | ||
453 | if ($nlink == 2 && !$avoid_nlink) { | |
454 | # This dir has no subdirectories. | |
455 | for my $FN (@filenames) { | |
456 | next if $FN =~ /^\.{1,2}$/; | |
457 | ||
458 | $name = "$dir_name/$FN"; | |
459 | $_ = ($no_chdir ? $name : $FN); | |
460 | &$wanted_callback; | |
461 | } | |
462 | ||
463 | } | |
464 | else { | |
465 | # This dir has subdirectories. | |
466 | $subcount = $nlink - 2; | |
467 | ||
468 | for my $FN (@filenames) { | |
469 | next if $FN =~ /^\.{1,2}$/; | |
470 | if ($subcount > 0 || $avoid_nlink) { | |
471 | # Seen all the subdirs? | |
472 | # check for directoriness. | |
473 | # stat is faster for a file in the current directory | |
474 | $sub_nlink = (lstat ($no_chdir ? "$dir_name/$FN" : $FN))[3]; | |
475 | ||
476 | if (-d _) { | |
477 | --$subcount; | |
478 | $FN =~ s/\.dir$// if $Is_VMS; | |
479 | push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; | |
480 | } | |
481 | else { | |
482 | $name = "$dir_name/$FN"; | |
483 | $_= ($no_chdir ? $name : $FN); | |
484 | &$wanted_callback; | |
485 | } | |
486 | } | |
487 | else { $name = "$dir_name/$FN"; | |
488 | $_= ($no_chdir ? $name : $FN); | |
489 | &$wanted_callback; | |
490 | } | |
491 | } | |
492 | } | |
493 | if ($bydepth) { | |
494 | $name = $dir_name; | |
495 | $dir = $p_dir; | |
496 | $_ = ($no_chdir ? $dir_name : $dir_rel ); | |
497 | &$wanted_callback; | |
498 | } | |
17b275ff RA |
499 | } |
500 | continue { | |
81793b90 GS |
501 | if ( defined ($SE = pop @Stack) ) { |
502 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; | |
503 | if ($CdLvl > $Level && !$no_chdir) { | |
504 | die "Can't cd to $dir_name" . '../' x ($CdLvl-$Level) | |
505 | unless chdir '../' x ($CdLvl-$Level); | |
506 | $CdLvl = $Level; | |
507 | } | |
508 | $dir_name = "$p_dir/$dir_rel"; | |
509 | } | |
a0d0e21e LW |
510 | } |
511 | } | |
512 | ||
81793b90 GS |
513 | |
514 | # API: | |
515 | # $wanted | |
516 | # $dir_loc : absolute location of a dir | |
517 | # $p_dir : "parent directory" | |
518 | # preconditions: | |
519 | # chdir (if not no_chdir) to dir | |
520 | ||
521 | sub _find_dir_symlnk($$$) { | |
522 | my ($wanted, $dir_loc, $p_dir) = @_; | |
523 | my @Stack; | |
524 | my @filenames; | |
525 | my $new_loc; | |
526 | my $SE = []; | |
527 | my $dir_name = $p_dir; | |
528 | my $dir_rel = '.'; # directory name relative to current directory | |
529 | ||
530 | local ($dir, $name, $fullname, $prune, *DIR); | |
531 | ||
532 | unless ($no_chdir or $p_dir eq '.') { | |
533 | my $udir = $dir_loc; | |
534 | if ($untaint) { | |
535 | $udir = $1 if $dir_loc =~ m|$untaint_pat|; | |
536 | unless (defined $udir) { | |
537 | if ($untaint_skip == 0) { | |
538 | die "directory $dir_loc is still tainted"; | |
539 | } | |
540 | else { | |
541 | return; | |
542 | } | |
543 | } | |
544 | } | |
545 | unless (chdir $udir) { | |
546 | warn "Can't cd to $udir: $!\n"; | |
547 | return; | |
548 | } | |
549 | } | |
550 | ||
551 | while (defined $SE) { | |
552 | ||
553 | unless ($bydepth) { | |
554 | $dir= $p_dir; | |
555 | $name= $dir_name; | |
556 | $_= ($no_chdir ? $dir_name : $dir_rel ); | |
557 | $fullname= $dir_loc; | |
558 | # prune may happen here | |
559 | $prune= 0; | |
560 | &$wanted_callback; | |
561 | next if $prune; | |
562 | } | |
563 | ||
564 | # change to that directory | |
565 | unless ($no_chdir or $dir_rel eq '.') { | |
566 | my $udir = $dir_loc; | |
567 | if ($untaint) { | |
568 | $udir = $1 if $dir_loc =~ m|$untaint_pat|; | |
569 | unless (defined $udir ) { | |
570 | if ($untaint_skip == 0) { | |
571 | die "directory $dir_loc is still tainted"; | |
a0d0e21e | 572 | } |
237437d0 | 573 | else { |
81793b90 | 574 | next; |
237437d0 | 575 | } |
a0d0e21e LW |
576 | } |
577 | } | |
81793b90 GS |
578 | unless (chdir $udir) { |
579 | warn "Can't cd to $udir: $!\n"; | |
580 | next; | |
581 | } | |
582 | } | |
583 | ||
584 | $dir = $dir_name; | |
585 | ||
586 | # Get the list of files in the current directory. | |
587 | unless (opendir DIR, ($no_chdir ? $dir_loc : '.')) { | |
588 | warn "Can't opendir($dir_loc): $!\n"; | |
589 | next; | |
590 | } | |
591 | @filenames = readdir DIR; | |
592 | closedir(DIR); | |
593 | ||
594 | for my $FN (@filenames) { | |
595 | next if $FN =~ /^\.{1,2}$/; | |
596 | ||
597 | # follow symbolic links / do an lstat | |
598 | $new_loc= Follow_SymLink("$dir_loc/$FN"); | |
599 | ||
600 | # ignore if invalid symlink | |
601 | next unless defined $new_loc; | |
602 | ||
603 | if (-d _) { | |
604 | push @Stack,[$new_loc,$dir_name,$FN]; | |
605 | } | |
606 | else { | |
607 | $fullname = $new_loc; | |
608 | $name = "$dir_name/$FN"; | |
609 | $_ = ($no_chdir ? $name : $FN); | |
610 | &$wanted_callback; | |
611 | } | |
612 | } | |
613 | ||
614 | if ($bydepth) { | |
615 | $fullname = $dir_loc; | |
616 | $name = $dir_name; | |
617 | $_ = ($no_chdir ? $dir_name : $dir_rel); | |
618 | &$wanted_callback; | |
619 | } | |
620 | } | |
621 | continue { | |
622 | if (defined($SE = pop @Stack)) { | |
623 | ($dir_loc, $p_dir, $dir_rel) = @$SE; | |
624 | $dir_name = "$p_dir/$dir_rel"; | |
a0d0e21e LW |
625 | } |
626 | } | |
627 | } | |
628 | ||
81793b90 | 629 | |
20408e3c | 630 | sub wrap_wanted { |
81793b90 GS |
631 | my $wanted = shift; |
632 | if ( ref($wanted) eq 'HASH' ) { | |
633 | if ( $wanted->{follow} || $wanted->{follow_fast}) { | |
634 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; | |
635 | } | |
636 | if ( $wanted->{untaint} ) { | |
637 | $wanted->{untaint_pattern} = qr|^([-+@\w./]+)$| | |
638 | unless defined $wanted->{untaint_pattern}; | |
639 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; | |
640 | } | |
641 | return $wanted; | |
642 | } | |
643 | else { | |
644 | return { wanted => $wanted }; | |
645 | } | |
a0d0e21e LW |
646 | } |
647 | ||
20408e3c | 648 | sub find { |
81793b90 GS |
649 | my $wanted = shift; |
650 | _find_opt(wrap_wanted($wanted), @_); | |
651 | %SLnkSeen= (); # free memory | |
a0d0e21e LW |
652 | } |
653 | ||
55d729e4 | 654 | sub finddepth { |
81793b90 GS |
655 | my $wanted = wrap_wanted(shift); |
656 | $wanted->{bydepth} = 1; | |
657 | _find_opt($wanted, @_); | |
658 | %SLnkSeen= (); # free memory | |
20408e3c | 659 | } |
6280b799 | 660 | |
661 | # These are hard-coded for now, but may move to hint files. | |
10eba763 | 662 | if ($^O eq 'VMS') { |
81793b90 GS |
663 | $Is_VMS = 1; |
664 | $File::Find::dont_use_nlink = 1; | |
748a9306 LW |
665 | } |
666 | ||
81793b90 | 667 | $File::Find::dont_use_nlink = 1 |
3e8584ad | 668 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32'; |
6280b799 | 669 | |
20408e3c GS |
670 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
671 | # report the number of links in a directory as an indication | |
672 | # of the number of files. | |
673 | # See, e.g. hints/machten.sh for MachTen 2.2. | |
81793b90 GS |
674 | unless ($File::Find::dont_use_nlink) { |
675 | require Config; | |
676 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); | |
20408e3c GS |
677 | } |
678 | ||
a0d0e21e | 679 | 1; |