Commit | Line | Data |
a0d0e21e |
1 | package File::Find; |
b75c8c73 |
2 | use strict; |
b395063c |
3 | use warnings; |
4 | use 5.6.0; |
a85af077 |
5 | our $VERSION = '1.01'; |
a0d0e21e |
6 | require Exporter; |
6280b799 |
7 | require Cwd; |
a0d0e21e |
8 | |
f06db76b |
9 | =head1 NAME |
10 | |
11 | find - traverse a file tree |
12 | |
13 | finddepth - traverse a directory structure depth-first |
14 | |
15 | =head1 SYNOPSIS |
16 | |
17 | use File::Find; |
81793b90 |
18 | find(\&wanted, '/foo', '/bar'); |
f06db76b |
19 | sub wanted { ... } |
237437d0 |
20 | |
f06db76b |
21 | use File::Find; |
81793b90 |
22 | finddepth(\&wanted, '/foo', '/bar'); |
f06db76b |
23 | sub wanted { ... } |
3cb6de81 |
24 | |
81793b90 |
25 | use File::Find; |
26 | find({ wanted => \&process, follow => 1 }, '.'); |
f06db76b |
27 | |
28 | =head1 DESCRIPTION |
29 | |
20408e3c |
30 | The first argument to find() is either a hash reference describing the |
81793b90 |
31 | operations to be performed for each file, or a code reference. |
20408e3c |
32 | |
81793b90 |
33 | Here are the possible keys for the hash: |
34 | |
35 | =over 3 |
36 | |
37 | =item C<wanted> |
38 | |
39 | The value should be a code reference. This code reference is called |
40 | I<the wanted() function> below. |
41 | |
42 | =item C<bydepth> |
43 | |
44 | Reports the name of a directory only AFTER all its entries |
45 | have been reported. Entry point finddepth() is a shortcut for |
46 | specifying C<{ bydepth => 1 }> in the first argument of find(). |
47 | |
719c805e |
48 | =item C<preprocess> |
49 | |
7e47e6ff |
50 | The value should be a code reference. This code reference is used to |
51 | preprocess the current directory. The name of currently processed |
52 | directory is in $File::Find::dir. Your preprocessing function is |
53 | called after readdir() but before the loop that calls the wanted() |
54 | function. It is called with a list of strings (actually file/directory |
55 | names) and is expected to return a list of strings. The code can be |
56 | used to sort the file/directory names alphabetically, numerically, |
57 | or to filter out directory entries based on their name alone. When |
58 | I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. |
719c805e |
59 | |
60 | =item C<postprocess> |
61 | |
7e47e6ff |
62 | The value should be a code reference. It is invoked just before leaving |
63 | the currently processed directory. It is called in void context with no |
64 | arguments. The name of the current directory is in $File::Find::dir. This |
65 | hook is handy for summarizing a directory, such as calculating its disk |
3fa6e24b |
66 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
7e47e6ff |
67 | no-op. |
719c805e |
68 | |
81793b90 |
69 | =item C<follow> |
70 | |
71 | Causes symbolic links to be followed. Since directory trees with symbolic |
72 | links (followed) may contain files more than once and may even have |
73 | cycles, a hash has to be built up with an entry for each file. |
74 | This might be expensive both in space and time for a large |
75 | directory tree. See I<follow_fast> and I<follow_skip> below. |
76 | If either I<follow> or I<follow_fast> is in effect: |
77 | |
78 | =over 6 |
79 | |
a45bd81d |
80 | =item * |
81793b90 |
81 | |
f10e1564 |
82 | It is guaranteed that an I<lstat> has been called before the user's |
81793b90 |
83 | I<wanted()> function is called. This enables fast file checks involving S< _>. |
84 | |
a45bd81d |
85 | =item * |
81793b90 |
86 | |
87 | There is a variable C<$File::Find::fullname> which holds the absolute |
88 | pathname of the file with all symbolic links resolved |
89 | |
90 | =back |
91 | |
92 | =item C<follow_fast> |
93 | |
f10e1564 |
94 | This is similar to I<follow> except that it may report some files more |
95 | than once. It does detect cycles, however. Since only symbolic links |
96 | have to be hashed, this is much cheaper both in space and time. If |
97 | processing a file more than once (by the user's I<wanted()> function) |
81793b90 |
98 | is worse than just taking time, the option I<follow> should be used. |
99 | |
100 | =item C<follow_skip> |
101 | |
102 | C<follow_skip==1>, which is the default, causes all files which are |
103 | neither directories nor symbolic links to be ignored if they are about |
104 | to be processed a second time. If a directory or a symbolic link |
105 | are about to be processed a second time, File::Find dies. |
106 | C<follow_skip==0> causes File::Find to die if any file is about to be |
107 | processed a second time. |
108 | C<follow_skip==2> causes File::Find to ignore any duplicate files and |
7e47e6ff |
109 | directories but to proceed normally otherwise. |
20408e3c |
110 | |
80e52b73 |
111 | =item C<dangling_symlinks> |
112 | |
113 | If true and a code reference, will be called with the symbolic link |
114 | name and the directory it lives in as arguments. Otherwise, if true |
115 | and warnings are on, warning "symbolic_link_name is a dangling |
116 | symbolic link\n" will be issued. If false, the dangling symbolic link |
117 | will be silently ignored. |
f06db76b |
118 | |
81793b90 |
119 | =item C<no_chdir> |
120 | |
121 | Does not C<chdir()> to each directory as it recurses. The wanted() |
122 | function will need to be aware of this, of course. In this case, |
123 | C<$_> will be the same as C<$File::Find::name>. |
124 | |
125 | =item C<untaint> |
126 | |
127 | If find is used in taint-mode (-T command line switch or if EUID != UID |
128 | or if EGID != GID) then internally directory names have to be untainted |
7e47e6ff |
129 | before they can be chdir'ed to. Therefore they are checked against a regular |
130 | expression I<untaint_pattern>. Note that all names passed to the user's |
131 | I<wanted()> function are still tainted. If this option is used while |
132 | not in taint-mode, C<untaint> is a no-op. |
81793b90 |
133 | |
134 | =item C<untaint_pattern> |
135 | |
136 | See above. This should be set using the C<qr> quoting operator. |
137 | The default is set to C<qr|^([-+@\w./]+)$|>. |
1cffc1dd |
138 | Note that the parentheses are vital. |
81793b90 |
139 | |
140 | =item C<untaint_skip> |
141 | |
7e47e6ff |
142 | If set, a directory which fails the I<untaint_pattern> is skipped, |
143 | including all its sub-directories. The default is to 'die' in such a case. |
81793b90 |
144 | |
145 | =back |
146 | |
147 | The wanted() function does whatever verifications you want. |
148 | C<$File::Find::dir> contains the current directory name, and C<$_> the |
149 | current filename within that directory. C<$File::Find::name> contains |
f10e1564 |
150 | the complete pathname to the file. You are chdir()'d to |
151 | C<$File::Find::dir> when the function is called, unless C<no_chdir> |
7e47e6ff |
152 | was specified. When C<follow> or C<follow_fast> are in effect, there is |
f10e1564 |
153 | also a C<$File::Find::fullname>. The function may set |
154 | C<$File::Find::prune> to prune the tree unless C<bydepth> was |
155 | specified. Unless C<follow> or C<follow_fast> is specified, for |
156 | compatibility reasons (find.pl, find2perl) there are in addition the |
157 | following globals available: C<$File::Find::topdir>, |
158 | C<$File::Find::topdev>, C<$File::Find::topino>, |
e7b91b67 |
159 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
47a735e8 |
160 | |
20408e3c |
161 | This library is useful for the C<find2perl> tool, which when fed, |
f06db76b |
162 | |
163 | find2perl / -name .nfs\* -mtime +7 \ |
81793b90 |
164 | -exec rm -f {} \; -o -fstype nfs -prune |
f06db76b |
165 | |
166 | produces something like: |
167 | |
168 | sub wanted { |
c7b9dd21 |
169 | /^\.nfs.*\z/s && |
81793b90 |
170 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
f06db76b |
171 | int(-M _) > 7 && |
172 | unlink($_) |
173 | || |
81793b90 |
174 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
f06db76b |
175 | $dev < 0 && |
6280b799 |
176 | ($File::Find::prune = 1); |
f06db76b |
177 | } |
178 | |
43dece2a |
179 | Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical |
180 | filehandle that caches the information from the preceding |
181 | stat(), lstat(), or filetest. |
182 | |
81793b90 |
183 | Set the variable C<$File::Find::dont_use_nlink> if you're using AFS, |
6280b799 |
184 | since AFS cheats. |
f06db76b |
185 | |
1cffc1dd |
186 | Here's another interesting wanted function. It will find all symbolic |
187 | links that don't resolve: |
f06db76b |
188 | |
189 | sub wanted { |
81793b90 |
190 | -l && !-e && print "bogus link: $File::Find::name\n"; |
237437d0 |
191 | } |
f06db76b |
192 | |
81793b90 |
193 | See also the script C<pfind> on CPAN for a nice application of this |
194 | module. |
195 | |
196 | =head1 CAVEAT |
197 | |
f10e1564 |
198 | Be aware that the option to follow symbolic links can be dangerous. |
81793b90 |
199 | Depending on the structure of the directory tree (including symbolic |
200 | links to directories) you might traverse a given (physical) directory |
201 | more than once (only if C<follow_fast> is in effect). |
202 | Furthermore, deleting or changing files in a symbolically linked directory |
203 | might cause very unpleasant surprises, since you delete or change files |
204 | in an unknown directory. |
0530a6c4 |
205 | |
7e47e6ff |
206 | =head1 NOTES |
207 | |
208 | =over 4 |
209 | |
210 | =item * |
211 | |
212 | Mac OS (Classic) users should note a few differences: |
213 | |
214 | =over 4 |
215 | |
216 | =item * |
217 | |
218 | The path separator is ':', not '/', and the current directory is denoted |
219 | as ':', not '.'. You should be careful about specifying relative pathnames. |
220 | While a full path always begins with a volume name, a relative pathname |
221 | should always begin with a ':'. If specifying a volume name only, a |
222 | trailing ':' is required. |
223 | |
224 | =item * |
225 | |
226 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> |
227 | contains the name of a directory, that name may or may not end with a |
228 | ':'. Likewise, C<$File::Find::name>, which contains the complete |
229 | pathname to that directory, and C<$File::Find::fullname>, which holds |
230 | the absolute pathname of that directory with all symbolic links resolved, |
231 | may or may not end with a ':'. |
232 | |
233 | =item * |
234 | |
235 | The default C<untaint_pattern> (see above) on Mac OS is set to |
236 | C<qr|^(.+)$|>. Note that the parentheses are vital. |
237 | |
238 | =item * |
239 | |
240 | The invisible system file "Icon\015" is ignored. While this file may |
241 | appear in every directory, there are some more invisible system files |
242 | on every volume, which are all located at the volume root level (i.e. |
243 | "MacintoshHD:"). These system files are B<not> excluded automatically. |
244 | Your filter may use the following code to recognize invisible files or |
245 | directories (requires Mac::Files): |
246 | |
247 | use Mac::Files; |
248 | |
249 | # invisible() -- returns 1 if file/directory is invisible, |
1cffc1dd |
250 | # 0 if it's visible or undef if an error occurred |
7e47e6ff |
251 | |
252 | sub invisible($) { |
253 | my $file = shift; |
254 | my ($fileCat, $fileInfo); |
255 | my $invisible_flag = 1 << 14; |
256 | |
257 | if ( $fileCat = FSpGetCatInfo($file) ) { |
258 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { |
259 | return (($fileInfo->fdFlags & $invisible_flag) && 1); |
260 | } |
261 | } |
262 | return undef; |
263 | } |
264 | |
265 | Generally, invisible files are system files, unless an odd application |
266 | decides to use invisible files for its own purposes. To distinguish |
267 | such files from system files, you have to look at the B<type> and B<creator> |
268 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and |
269 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes |
270 | (see MacPerl.pm for details). |
271 | |
272 | Files that appear on the desktop actually reside in an (hidden) directory |
273 | named "Desktop Folder" on the particular disk volume. Note that, although |
274 | all desktop files appear to be on the same "virtual" desktop, each disk |
275 | volume actually maintains its own "Desktop Folder" directory. |
276 | |
277 | =back |
278 | |
279 | =back |
0530a6c4 |
280 | |
a85af077 |
281 | =head1 HISTORY |
282 | |
283 | File::Find used to produce incorrect results if called recursively. |
284 | During the development of perl 5.8 this bug was fixed. |
285 | The first fixed version of File::Find was 1.01. |
286 | |
f06db76b |
287 | =cut |
288 | |
b75c8c73 |
289 | our @ISA = qw(Exporter); |
290 | our @EXPORT = qw(find finddepth); |
6280b799 |
291 | |
a0d0e21e |
292 | |
81793b90 |
293 | use strict; |
294 | my $Is_VMS; |
7e47e6ff |
295 | my $Is_MacOS; |
81793b90 |
296 | |
297 | require File::Basename; |
7e47e6ff |
298 | require File::Spec; |
81793b90 |
299 | |
9f826d6a |
300 | # Should ideally be my() not our() but local() currently |
301 | # refuses to operate on lexicals |
302 | |
303 | our %SLnkSeen; |
304 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
719c805e |
305 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
306 | $pre_process, $post_process, $dangling_symlinks); |
81793b90 |
307 | |
308 | sub contract_name { |
309 | my ($cdir,$fn) = @_; |
310 | |
7e47e6ff |
311 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
81793b90 |
312 | |
313 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); |
314 | |
315 | $fn =~ s|^\./||; |
316 | |
317 | my $abs_name= $cdir . $fn; |
318 | |
319 | if (substr($fn,0,3) eq '../') { |
fecbda2b |
320 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
81793b90 |
321 | } |
322 | |
323 | return $abs_name; |
324 | } |
325 | |
7e47e6ff |
326 | # return the absolute name of a directory or file |
327 | sub contract_name_Mac { |
328 | my ($cdir,$fn) = @_; |
329 | my $abs_name; |
330 | |
331 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' |
332 | |
333 | my $colon_count = length ($1); |
334 | if ($colon_count == 1) { |
335 | $abs_name = $cdir . $2; |
336 | return $abs_name; |
337 | } |
338 | else { |
339 | # need to move up the tree, but |
340 | # only if it's not a volume name |
341 | for (my $i=1; $i<$colon_count; $i++) { |
342 | unless ($cdir =~ /^[^:]+:$/) { # volume name |
343 | $cdir =~ s/[^:]+:$//; |
344 | } |
345 | else { |
346 | return undef; |
347 | } |
348 | } |
349 | $abs_name = $cdir . $2; |
350 | return $abs_name; |
351 | } |
352 | |
353 | } |
354 | else { |
355 | |
356 | # $fn may be a valid path to a directory or file or (dangling) |
357 | # symlink, without a leading ':' |
358 | if ( (-e $fn) || (-l $fn) ) { |
359 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* |
360 | return $fn; # $fn is already an absolute path |
361 | } |
362 | else { |
363 | $abs_name = $cdir . $fn; |
364 | return $abs_name; |
365 | } |
366 | } |
367 | else { # argh!, $fn is not a valid directory/file |
368 | return undef; |
369 | } |
370 | } |
371 | } |
81793b90 |
372 | |
373 | sub PathCombine($$) { |
374 | my ($Base,$Name) = @_; |
375 | my $AbsName; |
376 | |
7e47e6ff |
377 | if ($Is_MacOS) { |
378 | # $Name is the resolved symlink (always a full path on MacOS), |
379 | # i.e. there's no need to call contract_name_Mac() |
380 | $AbsName = $Name; |
381 | |
382 | # (simple) check for recursion |
383 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion |
384 | return undef; |
385 | } |
81793b90 |
386 | } |
387 | else { |
7e47e6ff |
388 | if (substr($Name,0,1) eq '/') { |
389 | $AbsName= $Name; |
390 | } |
391 | else { |
392 | $AbsName= contract_name($Base,$Name); |
393 | } |
81793b90 |
394 | |
7e47e6ff |
395 | # (simple) check for recursion |
396 | my $newlen= length($AbsName); |
397 | if ($newlen <= length($Base)) { |
398 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') |
399 | && $AbsName eq substr($Base,0,$newlen)) |
400 | { |
401 | return undef; |
402 | } |
81793b90 |
403 | } |
404 | } |
405 | return $AbsName; |
406 | } |
407 | |
408 | sub Follow_SymLink($) { |
409 | my ($AbsName) = @_; |
410 | |
411 | my ($NewName,$DEV, $INO); |
412 | ($DEV, $INO)= lstat $AbsName; |
413 | |
414 | while (-l _) { |
415 | if ($SLnkSeen{$DEV, $INO}++) { |
416 | if ($follow_skip < 2) { |
417 | die "$AbsName is encountered a second time"; |
a0d0e21e |
418 | } |
419 | else { |
81793b90 |
420 | return undef; |
a0d0e21e |
421 | } |
422 | } |
81793b90 |
423 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
424 | unless(defined $NewName) { |
425 | if ($follow_skip < 2) { |
426 | die "$AbsName is a recursive symbolic link"; |
427 | } |
428 | else { |
429 | return undef; |
a0d0e21e |
430 | } |
81793b90 |
431 | } |
432 | else { |
433 | $AbsName= $NewName; |
434 | } |
435 | ($DEV, $INO) = lstat($AbsName); |
436 | return undef unless defined $DEV; # dangling symbolic link |
437 | } |
438 | |
439 | if ($full_check && $SLnkSeen{$DEV, $INO}++) { |
7e47e6ff |
440 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
81793b90 |
441 | die "$AbsName encountered a second time"; |
442 | } |
443 | else { |
444 | return undef; |
445 | } |
446 | } |
447 | |
448 | return $AbsName; |
449 | } |
450 | |
17f410f9 |
451 | our($dir, $name, $fullname, $prune); |
81793b90 |
452 | sub _find_dir_symlnk($$$); |
453 | sub _find_dir($$$); |
454 | |
7e47e6ff |
455 | # check whether or not a scalar variable is tainted |
456 | # (code straight from the Camel, 3rd ed., page 561) |
457 | sub is_tainted_pp { |
458 | my $arg = shift; |
459 | my $nada = substr($arg, 0, 0); # zero-length |
460 | local $@; |
461 | eval { eval "# $nada" }; |
462 | return length($@) != 0; |
463 | } |
464 | |
81793b90 |
465 | sub _find_opt { |
466 | my $wanted = shift; |
467 | die "invalid top directory" unless defined $_[0]; |
468 | |
9f826d6a |
469 | # This function must local()ize everything because callbacks may |
470 | # call find() or finddepth() |
471 | |
472 | local %SLnkSeen; |
473 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
474 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
475 | $pre_process, $post_process, $dangling_symlinks); |
9f826d6a |
476 | local($dir, $name, $fullname, $prune); |
477 | |
8d9b0165 |
478 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::cwd(); |
80e52b73 |
479 | my $cwd_untainted = $cwd; |
480 | my $check_t_cwd = 1; |
481 | $wanted_callback = $wanted->{wanted}; |
482 | $bydepth = $wanted->{bydepth}; |
483 | $pre_process = $wanted->{preprocess}; |
484 | $post_process = $wanted->{postprocess}; |
485 | $no_chdir = $wanted->{no_chdir}; |
486 | $full_check = $wanted->{follow}; |
487 | $follow = $full_check || $wanted->{follow_fast}; |
488 | $follow_skip = $wanted->{follow_skip}; |
489 | $untaint = $wanted->{untaint}; |
490 | $untaint_pat = $wanted->{untaint_pattern}; |
491 | $untaint_skip = $wanted->{untaint_skip}; |
492 | $dangling_symlinks = $wanted->{dangling_symlinks}; |
81793b90 |
493 | |
1cffc1dd |
494 | # for compatibility reasons (find.pl, find2perl) |
9f826d6a |
495 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 |
496 | |
497 | # a symbolic link to a directory doesn't increase the link count |
498 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; |
499 | |
e7b91b67 |
500 | my ($abs_dir, $Is_Dir); |
81793b90 |
501 | |
502 | Proc_Top_Item: |
503 | foreach my $TOP (@_) { |
7e47e6ff |
504 | my $top_item = $TOP; |
505 | |
506 | if ($Is_MacOS) { |
507 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
508 | $top_item = ":$top_item" |
3fa6e24b |
509 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff |
510 | } |
511 | else { |
512 | $top_item =~ s|/\z|| unless $top_item eq '/'; |
513 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
514 | } |
515 | |
516 | $Is_Dir= 0; |
517 | |
518 | if ($follow) { |
519 | |
520 | if ($Is_MacOS) { |
521 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety |
522 | |
523 | if ($top_item eq $File::Find::current_dir) { |
524 | $abs_dir = $cwd; |
525 | } |
526 | else { |
527 | $abs_dir = contract_name_Mac($cwd, $top_item); |
528 | unless (defined $abs_dir) { |
3fa6e24b |
529 | warn "Can't determine absolute path for $top_item (No such file or directory)\n" if $^W; |
7e47e6ff |
530 | next Proc_Top_Item; |
531 | } |
532 | } |
533 | |
534 | } |
535 | else { |
536 | if (substr($top_item,0,1) eq '/') { |
537 | $abs_dir = $top_item; |
538 | } |
539 | elsif ($top_item eq $File::Find::current_dir) { |
540 | $abs_dir = $cwd; |
541 | } |
542 | else { # care about any ../ |
543 | $abs_dir = contract_name("$cwd/",$top_item); |
544 | } |
545 | } |
546 | $abs_dir= Follow_SymLink($abs_dir); |
547 | unless (defined $abs_dir) { |
80e52b73 |
548 | if ($dangling_symlinks) { |
549 | if (ref $dangling_symlinks eq 'CODE') { |
550 | $dangling_symlinks->($top_item, $cwd); |
551 | } else { |
552 | warn "$top_item is a dangling symbolic link\n" if $^W; |
553 | } |
554 | } |
81793b90 |
555 | next Proc_Top_Item; |
7e47e6ff |
556 | } |
557 | |
558 | if (-d _) { |
81793b90 |
559 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
560 | $Is_Dir= 1; |
7e47e6ff |
561 | } |
562 | } |
81793b90 |
563 | else { # no follow |
7e47e6ff |
564 | $topdir = $top_item; |
565 | unless (defined $topnlink) { |
3fa6e24b |
566 | warn "Can't stat $top_item: $!\n" if $^W; |
7e47e6ff |
567 | next Proc_Top_Item; |
568 | } |
569 | if (-d _) { |
c7b9dd21 |
570 | $top_item =~ s/\.dir\z// if $Is_VMS; |
e7b91b67 |
571 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 |
572 | $Is_Dir= 1; |
7e47e6ff |
573 | } |
237437d0 |
574 | else { |
81793b90 |
575 | $abs_dir= $top_item; |
7e47e6ff |
576 | } |
577 | } |
81793b90 |
578 | |
7e47e6ff |
579 | unless ($Is_Dir) { |
81793b90 |
580 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff |
581 | if ($Is_MacOS) { |
582 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ |
583 | } |
584 | else { |
585 | ($dir,$_) = ('./', $top_item); |
586 | } |
81793b90 |
587 | } |
588 | |
7e47e6ff |
589 | $abs_dir = $dir; |
590 | if (( $untaint ) && (is_tainted($dir) )) { |
591 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; |
81793b90 |
592 | unless (defined $abs_dir) { |
593 | if ($untaint_skip == 0) { |
7e47e6ff |
594 | die "directory $dir is still tainted"; |
81793b90 |
595 | } |
596 | else { |
597 | next Proc_Top_Item; |
598 | } |
599 | } |
7e47e6ff |
600 | } |
81793b90 |
601 | |
7e47e6ff |
602 | unless ($no_chdir || chdir $abs_dir) { |
3fa6e24b |
603 | warn "Couldn't chdir $abs_dir: $!\n" if $^W; |
7e47e6ff |
604 | next Proc_Top_Item; |
605 | } |
719911cc |
606 | |
7e47e6ff |
607 | $name = $abs_dir . $_; # $File::Find::name |
719911cc |
608 | |
7e47e6ff |
609 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
610 | |
7e47e6ff |
611 | } |
81793b90 |
612 | |
7e47e6ff |
613 | unless ( $no_chdir ) { |
614 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { |
615 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; |
616 | unless (defined $cwd_untainted) { |
617 | die "insecure cwd in find(depth)"; |
618 | } |
619 | $check_t_cwd = 0; |
620 | } |
621 | unless (chdir $cwd_untainted) { |
622 | die "Can't cd to $cwd: $!\n"; |
623 | } |
624 | } |
81793b90 |
625 | } |
626 | } |
627 | |
628 | # API: |
629 | # $wanted |
630 | # $p_dir : "parent directory" |
631 | # $nlink : what came back from the stat |
632 | # preconditions: |
633 | # chdir (if not no_chdir) to dir |
634 | |
635 | sub _find_dir($$$) { |
636 | my ($wanted, $p_dir, $nlink) = @_; |
637 | my ($CdLvl,$Level) = (0,0); |
638 | my @Stack; |
639 | my @filenames; |
640 | my ($subcount,$sub_nlink); |
641 | my $SE= []; |
642 | my $dir_name= $p_dir; |
7e47e6ff |
643 | my $dir_pref; |
644 | my $dir_rel; |
645 | my $tainted = 0; |
646 | |
647 | if ($Is_MacOS) { |
648 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface |
649 | $dir_rel= ':'; # directory name relative to current directory |
650 | } |
651 | else { |
652 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
653 | $dir_rel= '.'; # directory name relative to current directory |
654 | } |
81793b90 |
655 | |
656 | local ($dir, $name, $prune, *DIR); |
7e47e6ff |
657 | |
658 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { |
81793b90 |
659 | my $udir = $p_dir; |
7e47e6ff |
660 | if (( $untaint ) && (is_tainted($p_dir) )) { |
661 | ( $udir ) = $p_dir =~ m|$untaint_pat|; |
81793b90 |
662 | unless (defined $udir) { |
663 | if ($untaint_skip == 0) { |
664 | die "directory $p_dir is still tainted"; |
665 | } |
666 | else { |
667 | return; |
668 | } |
237437d0 |
669 | } |
a0d0e21e |
670 | } |
81793b90 |
671 | unless (chdir $udir) { |
3fa6e24b |
672 | warn "Can't cd to $udir: $!\n" if $^W; |
81793b90 |
673 | return; |
674 | } |
675 | } |
7e47e6ff |
676 | |
677 | # push the starting directory |
57e73c4b |
678 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 |
679 | |
7e47e6ff |
680 | if ($Is_MacOS) { |
681 | $p_dir = $dir_pref; # ensure trailing ':' |
682 | } |
683 | |
81793b90 |
684 | while (defined $SE) { |
685 | unless ($bydepth) { |
7e47e6ff |
686 | $dir= $p_dir; # $File::Find::dir |
687 | $name= $dir_name; # $File::Find::name |
688 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
81793b90 |
689 | # prune may happen here |
7e47e6ff |
690 | $prune= 0; |
691 | { &$wanted_callback }; # protect against wild "next" |
692 | next if $prune; |
81793b90 |
693 | } |
7e47e6ff |
694 | |
81793b90 |
695 | # change to that directory |
7e47e6ff |
696 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 |
697 | my $udir= $dir_rel; |
7e47e6ff |
698 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
699 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; |
81793b90 |
700 | unless (defined $udir) { |
701 | if ($untaint_skip == 0) { |
7e47e6ff |
702 | if ($Is_MacOS) { |
703 | die "directory ($p_dir) $dir_rel is still tainted"; |
704 | } |
705 | else { |
706 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; |
707 | } |
708 | } else { # $untaint_skip == 1 |
709 | next; |
81793b90 |
710 | } |
711 | } |
712 | } |
713 | unless (chdir $udir) { |
7e47e6ff |
714 | if ($Is_MacOS) { |
3fa6e24b |
715 | warn "Can't cd to ($p_dir) $udir: $!\n" if $^W; |
7e47e6ff |
716 | } |
717 | else { |
3fa6e24b |
718 | warn "Can't cd to (" . ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n" if $^W; |
7e47e6ff |
719 | } |
81793b90 |
720 | next; |
721 | } |
722 | $CdLvl++; |
723 | } |
724 | |
7e47e6ff |
725 | if ($Is_MacOS) { |
726 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
727 | } |
728 | |
729 | $dir= $dir_name; # $File::Find::dir |
81793b90 |
730 | |
731 | # Get the list of files in the current directory. |
7e47e6ff |
732 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
3fa6e24b |
733 | warn "Can't opendir($dir_name): $!\n" if $^W; |
81793b90 |
734 | next; |
735 | } |
736 | @filenames = readdir DIR; |
737 | closedir(DIR); |
719c805e |
738 | @filenames = &$pre_process(@filenames) if $pre_process; |
739 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; |
81793b90 |
740 | |
741 | if ($nlink == 2 && !$avoid_nlink) { |
742 | # This dir has no subdirectories. |
743 | for my $FN (@filenames) { |
7e47e6ff |
744 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
745 | |
7e47e6ff |
746 | $name = $dir_pref . $FN; # $File::Find::name |
747 | $_ = ($no_chdir ? $name : $FN); # $_ |
73396e07 |
748 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
749 | } |
750 | |
751 | } |
752 | else { |
753 | # This dir has subdirectories. |
754 | $subcount = $nlink - 2; |
755 | |
756 | for my $FN (@filenames) { |
7e47e6ff |
757 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
758 | if ($subcount > 0 || $avoid_nlink) { |
759 | # Seen all the subdirs? |
760 | # check for directoriness. |
761 | # stat is faster for a file in the current directory |
07867069 |
762 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 |
763 | |
764 | if (-d _) { |
765 | --$subcount; |
c7b9dd21 |
766 | $FN =~ s/\.dir\z// if $Is_VMS; |
81793b90 |
767 | push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
768 | } |
769 | else { |
7e47e6ff |
770 | $name = $dir_pref . $FN; # $File::Find::name |
771 | $_= ($no_chdir ? $name : $FN); # $_ |
73396e07 |
772 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
773 | } |
774 | } |
07867069 |
775 | else { |
7e47e6ff |
776 | $name = $dir_pref . $FN; # $File::Find::name |
777 | $_= ($no_chdir ? $name : $FN); # $_ |
73396e07 |
778 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
779 | } |
780 | } |
781 | } |
17b275ff |
782 | } |
783 | continue { |
57e73c4b |
784 | while ( defined ($SE = pop @Stack) ) { |
81793b90 |
785 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
786 | if ($CdLvl > $Level && !$no_chdir) { |
7e47e6ff |
787 | my $tmp; |
788 | if ($Is_MacOS) { |
789 | $tmp = (':' x ($CdLvl-$Level)) . ':'; |
790 | } |
791 | else { |
792 | $tmp = join('/',('..') x ($CdLvl-$Level)); |
793 | } |
794 | die "Can't cd to $dir_name" . $tmp |
795 | unless chdir ($tmp); |
81793b90 |
796 | $CdLvl = $Level; |
797 | } |
7e47e6ff |
798 | |
799 | if ($Is_MacOS) { |
800 | # $pdir always has a trailing ':', except for the starting dir, |
801 | # where $dir_rel eq ':' |
802 | $dir_name = "$p_dir$dir_rel"; |
803 | $dir_pref = "$dir_name:"; |
804 | } |
805 | else { |
806 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
807 | $dir_pref = "$dir_name/"; |
808 | } |
809 | |
719c805e |
810 | if ( $nlink == -2 ) { |
7e47e6ff |
811 | $name = $dir = $p_dir; # $File::Find::name / dir |
812 | if ($Is_MacOS) { |
813 | $_ = ':'; # $_ |
814 | } |
815 | else { |
816 | $_ = '.'; |
817 | } |
719c805e |
818 | &$post_process; # End-of-directory processing |
7e47e6ff |
819 | } |
820 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now |
821 | $name = $dir_name; |
822 | if ($Is_MacOS) { |
823 | if ($dir_rel eq ':') { # must be the top dir, where we started |
824 | $name =~ s|:$||; # $File::Find::name |
825 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
826 | } |
827 | $dir = $p_dir; # $File::Find::dir |
828 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
829 | } |
830 | else { |
831 | if ( substr($name,-2) eq '/.' ) { |
832 | $name =~ s|/\.$||; |
833 | } |
834 | $dir = $p_dir; |
835 | $_ = ($no_chdir ? $dir_name : $dir_rel ); |
836 | if ( substr($_,-2) eq '/.' ) { |
837 | s|/\.$||; |
838 | } |
839 | } |
840 | { &$wanted_callback }; # protect against wild "next" |
841 | } |
842 | else { |
843 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
844 | last; |
845 | } |
81793b90 |
846 | } |
a0d0e21e |
847 | } |
848 | } |
849 | |
81793b90 |
850 | |
851 | # API: |
852 | # $wanted |
853 | # $dir_loc : absolute location of a dir |
854 | # $p_dir : "parent directory" |
855 | # preconditions: |
856 | # chdir (if not no_chdir) to dir |
857 | |
858 | sub _find_dir_symlnk($$$) { |
7e47e6ff |
859 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 |
860 | my @Stack; |
861 | my @filenames; |
862 | my $new_loc; |
7e47e6ff |
863 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 |
864 | my $SE = []; |
865 | my $dir_name = $p_dir; |
7e47e6ff |
866 | my $dir_pref; |
867 | my $loc_pref; |
868 | my $dir_rel; |
869 | my $byd_flag; # flag for pending stack entry if $bydepth |
870 | my $tainted = 0; |
871 | my $ok = 1; |
872 | |
873 | if ($Is_MacOS) { |
874 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; |
875 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; |
876 | $dir_rel = ':'; # directory name relative to current directory |
877 | } else { |
878 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
879 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); |
880 | $dir_rel = '.'; # directory name relative to current directory |
881 | } |
81793b90 |
882 | |
883 | local ($dir, $name, $fullname, $prune, *DIR); |
7e47e6ff |
884 | |
885 | unless ($no_chdir) { |
886 | # untaint the topdir |
887 | if (( $untaint ) && (is_tainted($dir_loc) )) { |
888 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted |
889 | # once untainted, $updir_loc is pushed on the stack (as parent directory); |
890 | # hence, we don't need to untaint the parent directory every time we chdir |
891 | # to it later |
892 | unless (defined $updir_loc) { |
81793b90 |
893 | if ($untaint_skip == 0) { |
894 | die "directory $dir_loc is still tainted"; |
895 | } |
896 | else { |
897 | return; |
898 | } |
899 | } |
900 | } |
7e47e6ff |
901 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
902 | unless ($ok) { |
3fa6e24b |
903 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
81793b90 |
904 | return; |
905 | } |
906 | } |
907 | |
7e47e6ff |
908 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
909 | |
910 | if ($Is_MacOS) { |
911 | $p_dir = $dir_pref; # ensure trailing ':' |
912 | } |
57e73c4b |
913 | |
81793b90 |
914 | while (defined $SE) { |
915 | |
916 | unless ($bydepth) { |
7e47e6ff |
917 | # change (back) to parent directory (always untainted) |
704ea872 |
918 | unless ($no_chdir) { |
7e47e6ff |
919 | unless (chdir $updir_loc) { |
3fa6e24b |
920 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
704ea872 |
921 | next; |
922 | } |
923 | } |
7e47e6ff |
924 | $dir= $p_dir; # $File::Find::dir |
925 | $name= $dir_name; # $File::Find::name |
926 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
927 | $fullname= $dir_loc; # $File::Find::fullname |
81793b90 |
928 | # prune may happen here |
7e47e6ff |
929 | $prune= 0; |
704ea872 |
930 | lstat($_); # make sure file tests with '_' work |
7e47e6ff |
931 | { &$wanted_callback }; # protect against wild "next" |
932 | next if $prune; |
81793b90 |
933 | } |
934 | |
935 | # change to that directory |
7e47e6ff |
936 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
937 | $updir_loc = $dir_loc; |
938 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { |
939 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir |
940 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; |
941 | unless (defined $updir_loc) { |
81793b90 |
942 | if ($untaint_skip == 0) { |
943 | die "directory $dir_loc is still tainted"; |
a0d0e21e |
944 | } |
237437d0 |
945 | else { |
81793b90 |
946 | next; |
237437d0 |
947 | } |
a0d0e21e |
948 | } |
949 | } |
7e47e6ff |
950 | unless (chdir $updir_loc) { |
3fa6e24b |
951 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
81793b90 |
952 | next; |
953 | } |
954 | } |
955 | |
7e47e6ff |
956 | if ($Is_MacOS) { |
957 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
958 | } |
959 | |
960 | $dir = $dir_name; # $File::Find::dir |
81793b90 |
961 | |
962 | # Get the list of files in the current directory. |
7e47e6ff |
963 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
3fa6e24b |
964 | warn "Can't opendir($dir_loc): $!\n" if $^W; |
81793b90 |
965 | next; |
966 | } |
967 | @filenames = readdir DIR; |
968 | closedir(DIR); |
969 | |
970 | for my $FN (@filenames) { |
7e47e6ff |
971 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
972 | |
973 | # follow symbolic links / do an lstat |
07867069 |
974 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 |
975 | |
976 | # ignore if invalid symlink |
977 | next unless defined $new_loc; |
7e47e6ff |
978 | |
81793b90 |
979 | if (-d _) { |
7e47e6ff |
980 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 |
981 | } |
982 | else { |
7e47e6ff |
983 | $fullname = $new_loc; # $File::Find::fullname |
984 | $name = $dir_pref . $FN; # $File::Find::name |
985 | $_ = ($no_chdir ? $name : $FN); # $_ |
73396e07 |
986 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
987 | } |
988 | } |
989 | |
81793b90 |
990 | } |
991 | continue { |
57e73c4b |
992 | while (defined($SE = pop @Stack)) { |
7e47e6ff |
993 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
994 | if ($Is_MacOS) { |
995 | # $p_dir always has a trailing ':', except for the starting dir, |
996 | # where $dir_rel eq ':' |
997 | $dir_name = "$p_dir$dir_rel"; |
998 | $dir_pref = "$dir_name:"; |
999 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; |
1000 | } |
1001 | else { |
1002 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
1003 | $dir_pref = "$dir_name/"; |
1004 | $loc_pref = "$dir_loc/"; |
1005 | } |
1006 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now |
1007 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1008 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted |
3fa6e24b |
1009 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
7e47e6ff |
1010 | next; |
1011 | } |
1012 | } |
1013 | $fullname = $dir_loc; # $File::Find::fullname |
1014 | $name = $dir_name; # $File::Find::name |
1015 | if ($Is_MacOS) { |
1016 | if ($dir_rel eq ':') { # must be the top dir, where we started |
1017 | $name =~ s|:$||; # $File::Find::name |
1018 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
1019 | } |
1020 | $dir = $p_dir; # $File::Find::dir |
1021 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
1022 | } |
1023 | else { |
1024 | if ( substr($name,-2) eq '/.' ) { |
1025 | $name =~ s|/\.$||; # $File::Find::name |
1026 | } |
1027 | $dir = $p_dir; # $File::Find::dir |
1028 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ |
1029 | if ( substr($_,-2) eq '/.' ) { |
1030 | s|/\.$||; |
1031 | } |
1032 | } |
1033 | |
1034 | lstat($_); # make sure file tests with '_' work |
1035 | { &$wanted_callback }; # protect against wild "next" |
1036 | } |
1037 | else { |
1038 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; |
1039 | last; |
1040 | } |
a0d0e21e |
1041 | } |
1042 | } |
1043 | } |
1044 | |
81793b90 |
1045 | |
20408e3c |
1046 | sub wrap_wanted { |
81793b90 |
1047 | my $wanted = shift; |
1048 | if ( ref($wanted) eq 'HASH' ) { |
1049 | if ( $wanted->{follow} || $wanted->{follow_fast}) { |
1050 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; |
1051 | } |
1052 | if ( $wanted->{untaint} ) { |
7e47e6ff |
1053 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 |
1054 | unless defined $wanted->{untaint_pattern}; |
1055 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; |
1056 | } |
1057 | return $wanted; |
1058 | } |
1059 | else { |
1060 | return { wanted => $wanted }; |
1061 | } |
a0d0e21e |
1062 | } |
1063 | |
20408e3c |
1064 | sub find { |
81793b90 |
1065 | my $wanted = shift; |
1066 | _find_opt(wrap_wanted($wanted), @_); |
a0d0e21e |
1067 | } |
1068 | |
55d729e4 |
1069 | sub finddepth { |
81793b90 |
1070 | my $wanted = wrap_wanted(shift); |
1071 | $wanted->{bydepth} = 1; |
1072 | _find_opt($wanted, @_); |
20408e3c |
1073 | } |
6280b799 |
1074 | |
7e47e6ff |
1075 | # default |
1076 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; |
1077 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; |
1078 | |
6280b799 |
1079 | # These are hard-coded for now, but may move to hint files. |
10eba763 |
1080 | if ($^O eq 'VMS') { |
81793b90 |
1081 | $Is_VMS = 1; |
7e47e6ff |
1082 | $File::Find::dont_use_nlink = 1; |
1083 | } |
1084 | elsif ($^O eq 'MacOS') { |
1085 | $Is_MacOS = 1; |
1086 | $File::Find::dont_use_nlink = 1; |
1087 | $File::Find::skip_pattern = qr/^Icon\015\z/; |
1088 | $File::Find::untaint_pattern = qr|^(.+)$|; |
748a9306 |
1089 | } |
1090 | |
7e47e6ff |
1091 | # this _should_ work properly on all platforms |
1092 | # where File::Find can be expected to work |
1093 | $File::Find::current_dir = File::Spec->curdir || '.'; |
1094 | |
81793b90 |
1095 | $File::Find::dont_use_nlink = 1 |
497711e7 |
1096 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
2986a63f |
1097 | $^O eq 'cygwin' || $^O eq 'epoc' || $^O eq 'NetWare'; |
6280b799 |
1098 | |
20408e3c |
1099 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1100 | # report the number of links in a directory as an indication |
1101 | # of the number of files. |
1102 | # See, e.g. hints/machten.sh for MachTen 2.2. |
81793b90 |
1103 | unless ($File::Find::dont_use_nlink) { |
1104 | require Config; |
1105 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); |
20408e3c |
1106 | } |
1107 | |
7e47e6ff |
1108 | # We need a function that checks if a scalar is tainted. Either use the |
1109 | # Scalar::Util module's tainted() function or our (slower) pure Perl |
1110 | # fallback is_tainted_pp() |
1111 | { |
1112 | local $@; |
1113 | eval { require Scalar::Util }; |
1114 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; |
1115 | } |
1116 | |
a0d0e21e |
1117 | 1; |