Commit | Line | Data |
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a0d0e21e | 1 | package File::Find; |
b75c8c73 | 2 | use strict; |
b395063c BS |
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 AD |
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 GS |
25 | use File::Find; |
26 | find({ wanted => \&process, follow => 1 }, '.'); | |
f06db76b AD |
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 GS |
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 JS |
48 | =item C<preprocess> |
49 | ||
7e47e6ff JH |
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 JS |
59 | |
60 | =item C<postprocess> | |
61 | ||
7e47e6ff JH |
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 $File::Find::dir. This | |
65 | hook is handy for summarizing a directory, such as calculating its disk | |
3fa6e24b | 66 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
7e47e6ff | 67 | no-op. |
719c805e | 68 | |
81793b90 GS |
69 | =item C<follow> |
70 | ||
71 | Causes symbolic links to be followed. Since directory trees with symbolic | |
72 | links (followed) may contain files more than once and may even have | |
73 | cycles, a hash has to be built up with an entry for each file. | |
74 | This might be expensive both in space and time for a large | |
75 | directory tree. See I<follow_fast> and I<follow_skip> below. | |
76 | If either I<follow> or I<follow_fast> is in effect: | |
77 | ||
78 | =over 6 | |
79 | ||
a45bd81d | 80 | =item * |
81793b90 | 81 | |
f10e1564 | 82 | It is guaranteed that an I<lstat> has been called before the user's |
81793b90 GS |
83 | I<wanted()> function is called. This enables fast file checks involving S< _>. |
84 | ||
a45bd81d | 85 | =item * |
81793b90 GS |
86 | |
87 | There is a variable C<$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 RM |
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 GS |
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 | |
f06db76b | 111 | |
81793b90 GS |
112 | =item C<no_chdir> |
113 | ||
114 | Does not C<chdir()> to each directory as it recurses. The wanted() | |
115 | function will need to be aware of this, of course. In this case, | |
116 | C<$_> will be the same as C<$File::Find::name>. | |
117 | ||
118 | =item C<untaint> | |
119 | ||
120 | If find is used in taint-mode (-T command line switch or if EUID != UID | |
121 | or if EGID != GID) then internally directory names have to be untainted | |
7e47e6ff JH |
122 | before they can be chdir'ed to. Therefore they are checked against a regular |
123 | expression I<untaint_pattern>. Note that all names passed to the user's | |
124 | I<wanted()> function are still tainted. If this option is used while | |
125 | not in taint-mode, C<untaint> is a no-op. | |
81793b90 GS |
126 | |
127 | =item C<untaint_pattern> | |
128 | ||
129 | See above. This should be set using the C<qr> quoting operator. | |
130 | The default is set to C<qr|^([-+@\w./]+)$|>. | |
ac06ab1d | 131 | Note that the parantheses are vital. |
81793b90 GS |
132 | |
133 | =item C<untaint_skip> | |
134 | ||
7e47e6ff JH |
135 | If set, a directory which fails the I<untaint_pattern> is skipped, |
136 | including all its sub-directories. The default is to 'die' in such a case. | |
81793b90 GS |
137 | |
138 | =back | |
139 | ||
140 | The wanted() function does whatever verifications you want. | |
141 | C<$File::Find::dir> contains the current directory name, and C<$_> the | |
142 | current filename within that directory. C<$File::Find::name> contains | |
f10e1564 RM |
143 | the complete pathname to the file. You are chdir()'d to |
144 | C<$File::Find::dir> when the function is called, unless C<no_chdir> | |
7e47e6ff | 145 | was specified. When C<follow> or C<follow_fast> are in effect, there is |
f10e1564 RM |
146 | also a C<$File::Find::fullname>. The function may set |
147 | C<$File::Find::prune> to prune the tree unless C<bydepth> was | |
148 | specified. Unless C<follow> or C<follow_fast> is specified, for | |
149 | compatibility reasons (find.pl, find2perl) there are in addition the | |
150 | following globals available: C<$File::Find::topdir>, | |
151 | C<$File::Find::topdev>, C<$File::Find::topino>, | |
e7b91b67 | 152 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
47a735e8 | 153 | |
20408e3c | 154 | This library is useful for the C<find2perl> tool, which when fed, |
f06db76b AD |
155 | |
156 | find2perl / -name .nfs\* -mtime +7 \ | |
81793b90 | 157 | -exec rm -f {} \; -o -fstype nfs -prune |
f06db76b AD |
158 | |
159 | produces something like: | |
160 | ||
161 | sub wanted { | |
c7b9dd21 | 162 | /^\.nfs.*\z/s && |
81793b90 | 163 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
f06db76b AD |
164 | int(-M _) > 7 && |
165 | unlink($_) | |
166 | || | |
81793b90 | 167 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
f06db76b | 168 | $dev < 0 && |
6280b799 | 169 | ($File::Find::prune = 1); |
f06db76b AD |
170 | } |
171 | ||
81793b90 | 172 | Set the variable C<$File::Find::dont_use_nlink> if you're using AFS, |
6280b799 | 173 | since AFS cheats. |
f06db76b | 174 | |
f06db76b AD |
175 | |
176 | Here's another interesting wanted function. It will find all symlinks | |
177 | that don't resolve: | |
178 | ||
179 | sub wanted { | |
81793b90 | 180 | -l && !-e && print "bogus link: $File::Find::name\n"; |
237437d0 | 181 | } |
f06db76b | 182 | |
81793b90 GS |
183 | See also the script C<pfind> on CPAN for a nice application of this |
184 | module. | |
185 | ||
186 | =head1 CAVEAT | |
187 | ||
f10e1564 | 188 | Be aware that the option to follow symbolic links can be dangerous. |
81793b90 GS |
189 | Depending on the structure of the directory tree (including symbolic |
190 | links to directories) you might traverse a given (physical) directory | |
191 | more than once (only if C<follow_fast> is in effect). | |
192 | Furthermore, deleting or changing files in a symbolically linked directory | |
193 | might cause very unpleasant surprises, since you delete or change files | |
194 | in an unknown directory. | |
0530a6c4 | 195 | |
7e47e6ff JH |
196 | =head1 NOTES |
197 | ||
198 | =over 4 | |
199 | ||
200 | =item * | |
201 | ||
202 | Mac OS (Classic) users should note a few differences: | |
203 | ||
204 | =over 4 | |
205 | ||
206 | =item * | |
207 | ||
208 | The path separator is ':', not '/', and the current directory is denoted | |
209 | as ':', not '.'. You should be careful about specifying relative pathnames. | |
210 | While a full path always begins with a volume name, a relative pathname | |
211 | should always begin with a ':'. If specifying a volume name only, a | |
212 | trailing ':' is required. | |
213 | ||
214 | =item * | |
215 | ||
216 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> | |
217 | contains the name of a directory, that name may or may not end with a | |
218 | ':'. Likewise, C<$File::Find::name>, which contains the complete | |
219 | pathname to that directory, and C<$File::Find::fullname>, which holds | |
220 | the absolute pathname of that directory with all symbolic links resolved, | |
221 | may or may not end with a ':'. | |
222 | ||
223 | =item * | |
224 | ||
225 | The default C<untaint_pattern> (see above) on Mac OS is set to | |
226 | C<qr|^(.+)$|>. Note that the parentheses are vital. | |
227 | ||
228 | =item * | |
229 | ||
230 | The invisible system file "Icon\015" is ignored. While this file may | |
231 | appear in every directory, there are some more invisible system files | |
232 | on every volume, which are all located at the volume root level (i.e. | |
233 | "MacintoshHD:"). These system files are B<not> excluded automatically. | |
234 | Your filter may use the following code to recognize invisible files or | |
235 | directories (requires Mac::Files): | |
236 | ||
237 | use Mac::Files; | |
238 | ||
239 | # invisible() -- returns 1 if file/directory is invisible, | |
240 | # 0 if it's visible or undef if an error occured | |
241 | ||
242 | sub invisible($) { | |
243 | my $file = shift; | |
244 | my ($fileCat, $fileInfo); | |
245 | my $invisible_flag = 1 << 14; | |
246 | ||
247 | if ( $fileCat = FSpGetCatInfo($file) ) { | |
248 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { | |
249 | return (($fileInfo->fdFlags & $invisible_flag) && 1); | |
250 | } | |
251 | } | |
252 | return undef; | |
253 | } | |
254 | ||
255 | Generally, invisible files are system files, unless an odd application | |
256 | decides to use invisible files for its own purposes. To distinguish | |
257 | such files from system files, you have to look at the B<type> and B<creator> | |
258 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and | |
259 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes | |
260 | (see MacPerl.pm for details). | |
261 | ||
262 | Files that appear on the desktop actually reside in an (hidden) directory | |
263 | named "Desktop Folder" on the particular disk volume. Note that, although | |
264 | all desktop files appear to be on the same "virtual" desktop, each disk | |
265 | volume actually maintains its own "Desktop Folder" directory. | |
266 | ||
267 | =back | |
268 | ||
269 | =back | |
0530a6c4 | 270 | |
a85af077 A |
271 | =head1 HISTORY |
272 | ||
273 | File::Find used to produce incorrect results if called recursively. | |
274 | During the development of perl 5.8 this bug was fixed. | |
275 | The first fixed version of File::Find was 1.01. | |
276 | ||
f06db76b AD |
277 | =cut |
278 | ||
b75c8c73 MS |
279 | our @ISA = qw(Exporter); |
280 | our @EXPORT = qw(find finddepth); | |
6280b799 | 281 | |
a0d0e21e | 282 | |
81793b90 GS |
283 | use strict; |
284 | my $Is_VMS; | |
7e47e6ff | 285 | my $Is_MacOS; |
81793b90 GS |
286 | |
287 | require File::Basename; | |
7e47e6ff | 288 | require File::Spec; |
81793b90 | 289 | |
9f826d6a BM |
290 | # Should ideally be my() not our() but local() currently |
291 | # refuses to operate on lexicals | |
292 | ||
293 | our %SLnkSeen; | |
294 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, | |
719c805e JS |
295 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
296 | $pre_process, $post_process); | |
81793b90 GS |
297 | |
298 | sub contract_name { | |
299 | my ($cdir,$fn) = @_; | |
300 | ||
7e47e6ff | 301 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
81793b90 GS |
302 | |
303 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); | |
304 | ||
305 | $fn =~ s|^\./||; | |
306 | ||
307 | my $abs_name= $cdir . $fn; | |
308 | ||
309 | if (substr($fn,0,3) eq '../') { | |
fecbda2b | 310 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
81793b90 GS |
311 | } |
312 | ||
313 | return $abs_name; | |
314 | } | |
315 | ||
7e47e6ff JH |
316 | # return the absolute name of a directory or file |
317 | sub contract_name_Mac { | |
318 | my ($cdir,$fn) = @_; | |
319 | my $abs_name; | |
320 | ||
321 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' | |
322 | ||
323 | my $colon_count = length ($1); | |
324 | if ($colon_count == 1) { | |
325 | $abs_name = $cdir . $2; | |
326 | return $abs_name; | |
327 | } | |
328 | else { | |
329 | # need to move up the tree, but | |
330 | # only if it's not a volume name | |
331 | for (my $i=1; $i<$colon_count; $i++) { | |
332 | unless ($cdir =~ /^[^:]+:$/) { # volume name | |
333 | $cdir =~ s/[^:]+:$//; | |
334 | } | |
335 | else { | |
336 | return undef; | |
337 | } | |
338 | } | |
339 | $abs_name = $cdir . $2; | |
340 | return $abs_name; | |
341 | } | |
342 | ||
343 | } | |
344 | else { | |
345 | ||
346 | # $fn may be a valid path to a directory or file or (dangling) | |
347 | # symlink, without a leading ':' | |
348 | if ( (-e $fn) || (-l $fn) ) { | |
349 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* | |
350 | return $fn; # $fn is already an absolute path | |
351 | } | |
352 | else { | |
353 | $abs_name = $cdir . $fn; | |
354 | return $abs_name; | |
355 | } | |
356 | } | |
357 | else { # argh!, $fn is not a valid directory/file | |
358 | return undef; | |
359 | } | |
360 | } | |
361 | } | |
81793b90 GS |
362 | |
363 | sub PathCombine($$) { | |
364 | my ($Base,$Name) = @_; | |
365 | my $AbsName; | |
366 | ||
7e47e6ff JH |
367 | if ($Is_MacOS) { |
368 | # $Name is the resolved symlink (always a full path on MacOS), | |
369 | # i.e. there's no need to call contract_name_Mac() | |
370 | $AbsName = $Name; | |
371 | ||
372 | # (simple) check for recursion | |
373 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion | |
374 | return undef; | |
375 | } | |
81793b90 GS |
376 | } |
377 | else { | |
7e47e6ff JH |
378 | if (substr($Name,0,1) eq '/') { |
379 | $AbsName= $Name; | |
380 | } | |
381 | else { | |
382 | $AbsName= contract_name($Base,$Name); | |
383 | } | |
81793b90 | 384 | |
7e47e6ff JH |
385 | # (simple) check for recursion |
386 | my $newlen= length($AbsName); | |
387 | if ($newlen <= length($Base)) { | |
388 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') | |
389 | && $AbsName eq substr($Base,0,$newlen)) | |
390 | { | |
391 | return undef; | |
392 | } | |
81793b90 GS |
393 | } |
394 | } | |
395 | return $AbsName; | |
396 | } | |
397 | ||
398 | sub Follow_SymLink($) { | |
399 | my ($AbsName) = @_; | |
400 | ||
401 | my ($NewName,$DEV, $INO); | |
402 | ($DEV, $INO)= lstat $AbsName; | |
403 | ||
404 | while (-l _) { | |
405 | if ($SLnkSeen{$DEV, $INO}++) { | |
406 | if ($follow_skip < 2) { | |
407 | die "$AbsName is encountered a second time"; | |
a0d0e21e LW |
408 | } |
409 | else { | |
81793b90 | 410 | return undef; |
a0d0e21e LW |
411 | } |
412 | } | |
81793b90 GS |
413 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
414 | unless(defined $NewName) { | |
415 | if ($follow_skip < 2) { | |
416 | die "$AbsName is a recursive symbolic link"; | |
417 | } | |
418 | else { | |
419 | return undef; | |
a0d0e21e | 420 | } |
81793b90 GS |
421 | } |
422 | else { | |
423 | $AbsName= $NewName; | |
424 | } | |
425 | ($DEV, $INO) = lstat($AbsName); | |
426 | return undef unless defined $DEV; # dangling symbolic link | |
427 | } | |
428 | ||
429 | if ($full_check && $SLnkSeen{$DEV, $INO}++) { | |
7e47e6ff | 430 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
81793b90 GS |
431 | die "$AbsName encountered a second time"; |
432 | } | |
433 | else { | |
434 | return undef; | |
435 | } | |
436 | } | |
437 | ||
438 | return $AbsName; | |
439 | } | |
440 | ||
17f410f9 | 441 | our($dir, $name, $fullname, $prune); |
81793b90 GS |
442 | sub _find_dir_symlnk($$$); |
443 | sub _find_dir($$$); | |
444 | ||
7e47e6ff JH |
445 | # check whether or not a scalar variable is tainted |
446 | # (code straight from the Camel, 3rd ed., page 561) | |
447 | sub is_tainted_pp { | |
448 | my $arg = shift; | |
449 | my $nada = substr($arg, 0, 0); # zero-length | |
450 | local $@; | |
451 | eval { eval "# $nada" }; | |
452 | return length($@) != 0; | |
453 | } | |
454 | ||
81793b90 GS |
455 | sub _find_opt { |
456 | my $wanted = shift; | |
457 | die "invalid top directory" unless defined $_[0]; | |
458 | ||
9f826d6a BM |
459 | # This function must local()ize everything because callbacks may |
460 | # call find() or finddepth() | |
461 | ||
462 | local %SLnkSeen; | |
463 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, | |
464 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, | |
465 | $pre_process, $post_process); | |
466 | local($dir, $name, $fullname, $prune); | |
467 | ||
81793b90 GS |
468 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::cwd(); |
469 | my $cwd_untainted = $cwd; | |
7e47e6ff | 470 | my $check_t_cwd = 1; |
81793b90 GS |
471 | $wanted_callback = $wanted->{wanted}; |
472 | $bydepth = $wanted->{bydepth}; | |
719c805e JS |
473 | $pre_process = $wanted->{preprocess}; |
474 | $post_process = $wanted->{postprocess}; | |
81793b90 GS |
475 | $no_chdir = $wanted->{no_chdir}; |
476 | $full_check = $wanted->{follow}; | |
477 | $follow = $full_check || $wanted->{follow_fast}; | |
478 | $follow_skip = $wanted->{follow_skip}; | |
479 | $untaint = $wanted->{untaint}; | |
480 | $untaint_pat = $wanted->{untaint_pattern}; | |
481 | $untaint_skip = $wanted->{untaint_skip}; | |
482 | ||
e7b91b67 | 483 | # for compatability reasons (find.pl, find2perl) |
9f826d6a | 484 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 GS |
485 | |
486 | # a symbolic link to a directory doesn't increase the link count | |
487 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; | |
488 | ||
e7b91b67 | 489 | my ($abs_dir, $Is_Dir); |
81793b90 GS |
490 | |
491 | Proc_Top_Item: | |
492 | foreach my $TOP (@_) { | |
7e47e6ff JH |
493 | my $top_item = $TOP; |
494 | ||
495 | if ($Is_MacOS) { | |
496 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; | |
497 | $top_item = ":$top_item" | |
3fa6e24b | 498 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff JH |
499 | } |
500 | else { | |
501 | $top_item =~ s|/\z|| unless $top_item eq '/'; | |
502 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; | |
503 | } | |
504 | ||
505 | $Is_Dir= 0; | |
506 | ||
507 | if ($follow) { | |
508 | ||
509 | if ($Is_MacOS) { | |
510 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety | |
511 | ||
512 | if ($top_item eq $File::Find::current_dir) { | |
513 | $abs_dir = $cwd; | |
514 | } | |
515 | else { | |
516 | $abs_dir = contract_name_Mac($cwd, $top_item); | |
517 | unless (defined $abs_dir) { | |
3fa6e24b | 518 | warn "Can't determine absolute path for $top_item (No such file or directory)\n" if $^W; |
7e47e6ff JH |
519 | next Proc_Top_Item; |
520 | } | |
521 | } | |
522 | ||
523 | } | |
524 | else { | |
525 | if (substr($top_item,0,1) eq '/') { | |
526 | $abs_dir = $top_item; | |
527 | } | |
528 | elsif ($top_item eq $File::Find::current_dir) { | |
529 | $abs_dir = $cwd; | |
530 | } | |
531 | else { # care about any ../ | |
532 | $abs_dir = contract_name("$cwd/",$top_item); | |
533 | } | |
534 | } | |
535 | $abs_dir= Follow_SymLink($abs_dir); | |
536 | unless (defined $abs_dir) { | |
3fa6e24b | 537 | warn "$top_item is a dangling symbolic link\n" if $^W; |
81793b90 | 538 | next Proc_Top_Item; |
7e47e6ff JH |
539 | } |
540 | ||
541 | if (-d _) { | |
81793b90 GS |
542 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
543 | $Is_Dir= 1; | |
7e47e6ff JH |
544 | } |
545 | } | |
81793b90 | 546 | else { # no follow |
7e47e6ff JH |
547 | $topdir = $top_item; |
548 | unless (defined $topnlink) { | |
3fa6e24b | 549 | warn "Can't stat $top_item: $!\n" if $^W; |
7e47e6ff JH |
550 | next Proc_Top_Item; |
551 | } | |
552 | if (-d _) { | |
c7b9dd21 | 553 | $top_item =~ s/\.dir\z// if $Is_VMS; |
e7b91b67 | 554 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 | 555 | $Is_Dir= 1; |
7e47e6ff | 556 | } |
237437d0 | 557 | else { |
81793b90 | 558 | $abs_dir= $top_item; |
7e47e6ff JH |
559 | } |
560 | } | |
81793b90 | 561 | |
7e47e6ff | 562 | unless ($Is_Dir) { |
81793b90 | 563 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff JH |
564 | if ($Is_MacOS) { |
565 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ | |
566 | } | |
567 | else { | |
568 | ($dir,$_) = ('./', $top_item); | |
569 | } | |
81793b90 GS |
570 | } |
571 | ||
7e47e6ff JH |
572 | $abs_dir = $dir; |
573 | if (( $untaint ) && (is_tainted($dir) )) { | |
574 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; | |
81793b90 GS |
575 | unless (defined $abs_dir) { |
576 | if ($untaint_skip == 0) { | |
7e47e6ff | 577 | die "directory $dir is still tainted"; |
81793b90 GS |
578 | } |
579 | else { | |
580 | next Proc_Top_Item; | |
581 | } | |
582 | } | |
7e47e6ff | 583 | } |
81793b90 | 584 | |
7e47e6ff | 585 | unless ($no_chdir || chdir $abs_dir) { |
3fa6e24b | 586 | warn "Couldn't chdir $abs_dir: $!\n" if $^W; |
7e47e6ff JH |
587 | next Proc_Top_Item; |
588 | } | |
719911cc | 589 | |
7e47e6ff | 590 | $name = $abs_dir . $_; # $File::Find::name |
719911cc | 591 | |
7e47e6ff | 592 | { &$wanted_callback }; # protect against wild "next" |
81793b90 | 593 | |
7e47e6ff | 594 | } |
81793b90 | 595 | |
7e47e6ff JH |
596 | unless ( $no_chdir ) { |
597 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { | |
598 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; | |
599 | unless (defined $cwd_untainted) { | |
600 | die "insecure cwd in find(depth)"; | |
601 | } | |
602 | $check_t_cwd = 0; | |
603 | } | |
604 | unless (chdir $cwd_untainted) { | |
605 | die "Can't cd to $cwd: $!\n"; | |
606 | } | |
607 | } | |
81793b90 GS |
608 | } |
609 | } | |
610 | ||
611 | # API: | |
612 | # $wanted | |
613 | # $p_dir : "parent directory" | |
614 | # $nlink : what came back from the stat | |
615 | # preconditions: | |
616 | # chdir (if not no_chdir) to dir | |
617 | ||
618 | sub _find_dir($$$) { | |
619 | my ($wanted, $p_dir, $nlink) = @_; | |
620 | my ($CdLvl,$Level) = (0,0); | |
621 | my @Stack; | |
622 | my @filenames; | |
623 | my ($subcount,$sub_nlink); | |
624 | my $SE= []; | |
625 | my $dir_name= $p_dir; | |
7e47e6ff JH |
626 | my $dir_pref; |
627 | my $dir_rel; | |
628 | my $tainted = 0; | |
629 | ||
630 | if ($Is_MacOS) { | |
631 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface | |
632 | $dir_rel= ':'; # directory name relative to current directory | |
633 | } | |
634 | else { | |
635 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); | |
636 | $dir_rel= '.'; # directory name relative to current directory | |
637 | } | |
81793b90 GS |
638 | |
639 | local ($dir, $name, $prune, *DIR); | |
7e47e6ff JH |
640 | |
641 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { | |
81793b90 | 642 | my $udir = $p_dir; |
7e47e6ff JH |
643 | if (( $untaint ) && (is_tainted($p_dir) )) { |
644 | ( $udir ) = $p_dir =~ m|$untaint_pat|; | |
81793b90 GS |
645 | unless (defined $udir) { |
646 | if ($untaint_skip == 0) { | |
647 | die "directory $p_dir is still tainted"; | |
648 | } | |
649 | else { | |
650 | return; | |
651 | } | |
237437d0 | 652 | } |
a0d0e21e | 653 | } |
81793b90 | 654 | unless (chdir $udir) { |
3fa6e24b | 655 | warn "Can't cd to $udir: $!\n" if $^W; |
81793b90 GS |
656 | return; |
657 | } | |
658 | } | |
7e47e6ff JH |
659 | |
660 | # push the starting directory | |
57e73c4b | 661 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 | 662 | |
7e47e6ff JH |
663 | if ($Is_MacOS) { |
664 | $p_dir = $dir_pref; # ensure trailing ':' | |
665 | } | |
666 | ||
81793b90 GS |
667 | while (defined $SE) { |
668 | unless ($bydepth) { | |
7e47e6ff JH |
669 | $dir= $p_dir; # $File::Find::dir |
670 | $name= $dir_name; # $File::Find::name | |
671 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ | |
81793b90 | 672 | # prune may happen here |
7e47e6ff JH |
673 | $prune= 0; |
674 | { &$wanted_callback }; # protect against wild "next" | |
675 | next if $prune; | |
81793b90 | 676 | } |
7e47e6ff | 677 | |
81793b90 | 678 | # change to that directory |
7e47e6ff | 679 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 | 680 | my $udir= $dir_rel; |
7e47e6ff JH |
681 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
682 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; | |
81793b90 GS |
683 | unless (defined $udir) { |
684 | if ($untaint_skip == 0) { | |
7e47e6ff JH |
685 | if ($Is_MacOS) { |
686 | die "directory ($p_dir) $dir_rel is still tainted"; | |
687 | } | |
688 | else { | |
689 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; | |
690 | } | |
691 | } else { # $untaint_skip == 1 | |
692 | next; | |
81793b90 GS |
693 | } |
694 | } | |
695 | } | |
696 | unless (chdir $udir) { | |
7e47e6ff | 697 | if ($Is_MacOS) { |
3fa6e24b | 698 | warn "Can't cd to ($p_dir) $udir: $!\n" if $^W; |
7e47e6ff JH |
699 | } |
700 | else { | |
3fa6e24b | 701 | warn "Can't cd to (" . ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n" if $^W; |
7e47e6ff | 702 | } |
81793b90 GS |
703 | next; |
704 | } | |
705 | $CdLvl++; | |
706 | } | |
707 | ||
7e47e6ff JH |
708 | if ($Is_MacOS) { |
709 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); | |
710 | } | |
711 | ||
712 | $dir= $dir_name; # $File::Find::dir | |
81793b90 GS |
713 | |
714 | # Get the list of files in the current directory. | |
7e47e6ff | 715 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
3fa6e24b | 716 | warn "Can't opendir($dir_name): $!\n" if $^W; |
81793b90 GS |
717 | next; |
718 | } | |
719 | @filenames = readdir DIR; | |
720 | closedir(DIR); | |
719c805e JS |
721 | @filenames = &$pre_process(@filenames) if $pre_process; |
722 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; | |
81793b90 GS |
723 | |
724 | if ($nlink == 2 && !$avoid_nlink) { | |
725 | # This dir has no subdirectories. | |
726 | for my $FN (@filenames) { | |
7e47e6ff | 727 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 | 728 | |
7e47e6ff JH |
729 | $name = $dir_pref . $FN; # $File::Find::name |
730 | $_ = ($no_chdir ? $name : $FN); # $_ | |
73396e07 | 731 | { &$wanted_callback }; # protect against wild "next" |
81793b90 GS |
732 | } |
733 | ||
734 | } | |
735 | else { | |
736 | # This dir has subdirectories. | |
737 | $subcount = $nlink - 2; | |
738 | ||
739 | for my $FN (@filenames) { | |
7e47e6ff | 740 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 GS |
741 | if ($subcount > 0 || $avoid_nlink) { |
742 | # Seen all the subdirs? | |
743 | # check for directoriness. | |
744 | # stat is faster for a file in the current directory | |
07867069 | 745 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 GS |
746 | |
747 | if (-d _) { | |
748 | --$subcount; | |
c7b9dd21 | 749 | $FN =~ s/\.dir\z// if $Is_VMS; |
81793b90 GS |
750 | push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
751 | } | |
752 | else { | |
7e47e6ff JH |
753 | $name = $dir_pref . $FN; # $File::Find::name |
754 | $_= ($no_chdir ? $name : $FN); # $_ | |
73396e07 | 755 | { &$wanted_callback }; # protect against wild "next" |
81793b90 GS |
756 | } |
757 | } | |
07867069 | 758 | else { |
7e47e6ff JH |
759 | $name = $dir_pref . $FN; # $File::Find::name |
760 | $_= ($no_chdir ? $name : $FN); # $_ | |
73396e07 | 761 | { &$wanted_callback }; # protect against wild "next" |
81793b90 GS |
762 | } |
763 | } | |
764 | } | |
17b275ff RA |
765 | } |
766 | continue { | |
57e73c4b | 767 | while ( defined ($SE = pop @Stack) ) { |
81793b90 GS |
768 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
769 | if ($CdLvl > $Level && !$no_chdir) { | |
7e47e6ff JH |
770 | my $tmp; |
771 | if ($Is_MacOS) { | |
772 | $tmp = (':' x ($CdLvl-$Level)) . ':'; | |
773 | } | |
774 | else { | |
775 | $tmp = join('/',('..') x ($CdLvl-$Level)); | |
776 | } | |
777 | die "Can't cd to $dir_name" . $tmp | |
778 | unless chdir ($tmp); | |
81793b90 GS |
779 | $CdLvl = $Level; |
780 | } | |
7e47e6ff JH |
781 | |
782 | if ($Is_MacOS) { | |
783 | # $pdir always has a trailing ':', except for the starting dir, | |
784 | # where $dir_rel eq ':' | |
785 | $dir_name = "$p_dir$dir_rel"; | |
786 | $dir_pref = "$dir_name:"; | |
787 | } | |
788 | else { | |
789 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); | |
790 | $dir_pref = "$dir_name/"; | |
791 | } | |
792 | ||
719c805e | 793 | if ( $nlink == -2 ) { |
7e47e6ff JH |
794 | $name = $dir = $p_dir; # $File::Find::name / dir |
795 | if ($Is_MacOS) { | |
796 | $_ = ':'; # $_ | |
797 | } | |
798 | else { | |
799 | $_ = '.'; | |
800 | } | |
719c805e | 801 | &$post_process; # End-of-directory processing |
7e47e6ff JH |
802 | } |
803 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now | |
804 | $name = $dir_name; | |
805 | if ($Is_MacOS) { | |
806 | if ($dir_rel eq ':') { # must be the top dir, where we started | |
807 | $name =~ s|:$||; # $File::Find::name | |
808 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); | |
809 | } | |
810 | $dir = $p_dir; # $File::Find::dir | |
811 | $_ = ($no_chdir ? $name : $dir_rel); # $_ | |
812 | } | |
813 | else { | |
814 | if ( substr($name,-2) eq '/.' ) { | |
815 | $name =~ s|/\.$||; | |
816 | } | |
817 | $dir = $p_dir; | |
818 | $_ = ($no_chdir ? $dir_name : $dir_rel ); | |
819 | if ( substr($_,-2) eq '/.' ) { | |
820 | s|/\.$||; | |
821 | } | |
822 | } | |
823 | { &$wanted_callback }; # protect against wild "next" | |
824 | } | |
825 | else { | |
826 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; | |
827 | last; | |
828 | } | |
81793b90 | 829 | } |
a0d0e21e LW |
830 | } |
831 | } | |
832 | ||
81793b90 GS |
833 | |
834 | # API: | |
835 | # $wanted | |
836 | # $dir_loc : absolute location of a dir | |
837 | # $p_dir : "parent directory" | |
838 | # preconditions: | |
839 | # chdir (if not no_chdir) to dir | |
840 | ||
841 | sub _find_dir_symlnk($$$) { | |
7e47e6ff | 842 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 GS |
843 | my @Stack; |
844 | my @filenames; | |
845 | my $new_loc; | |
7e47e6ff | 846 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 GS |
847 | my $SE = []; |
848 | my $dir_name = $p_dir; | |
7e47e6ff JH |
849 | my $dir_pref; |
850 | my $loc_pref; | |
851 | my $dir_rel; | |
852 | my $byd_flag; # flag for pending stack entry if $bydepth | |
853 | my $tainted = 0; | |
854 | my $ok = 1; | |
855 | ||
856 | if ($Is_MacOS) { | |
857 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; | |
858 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; | |
859 | $dir_rel = ':'; # directory name relative to current directory | |
860 | } else { | |
861 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); | |
862 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); | |
863 | $dir_rel = '.'; # directory name relative to current directory | |
864 | } | |
81793b90 GS |
865 | |
866 | local ($dir, $name, $fullname, $prune, *DIR); | |
7e47e6ff JH |
867 | |
868 | unless ($no_chdir) { | |
869 | # untaint the topdir | |
870 | if (( $untaint ) && (is_tainted($dir_loc) )) { | |
871 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted | |
872 | # once untainted, $updir_loc is pushed on the stack (as parent directory); | |
873 | # hence, we don't need to untaint the parent directory every time we chdir | |
874 | # to it later | |
875 | unless (defined $updir_loc) { | |
81793b90 GS |
876 | if ($untaint_skip == 0) { |
877 | die "directory $dir_loc is still tainted"; | |
878 | } | |
879 | else { | |
880 | return; | |
881 | } | |
882 | } | |
883 | } | |
7e47e6ff JH |
884 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
885 | unless ($ok) { | |
3fa6e24b | 886 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
81793b90 GS |
887 | return; |
888 | } | |
889 | } | |
890 | ||
7e47e6ff JH |
891 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
892 | ||
893 | if ($Is_MacOS) { | |
894 | $p_dir = $dir_pref; # ensure trailing ':' | |
895 | } | |
57e73c4b | 896 | |
81793b90 GS |
897 | while (defined $SE) { |
898 | ||
899 | unless ($bydepth) { | |
7e47e6ff | 900 | # change (back) to parent directory (always untainted) |
704ea872 | 901 | unless ($no_chdir) { |
7e47e6ff | 902 | unless (chdir $updir_loc) { |
3fa6e24b | 903 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
704ea872 GS |
904 | next; |
905 | } | |
906 | } | |
7e47e6ff JH |
907 | $dir= $p_dir; # $File::Find::dir |
908 | $name= $dir_name; # $File::Find::name | |
909 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ | |
910 | $fullname= $dir_loc; # $File::Find::fullname | |
81793b90 | 911 | # prune may happen here |
7e47e6ff | 912 | $prune= 0; |
704ea872 | 913 | lstat($_); # make sure file tests with '_' work |
7e47e6ff JH |
914 | { &$wanted_callback }; # protect against wild "next" |
915 | next if $prune; | |
81793b90 GS |
916 | } |
917 | ||
918 | # change to that directory | |
7e47e6ff JH |
919 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
920 | $updir_loc = $dir_loc; | |
921 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { | |
922 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir | |
923 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; | |
924 | unless (defined $updir_loc) { | |
81793b90 GS |
925 | if ($untaint_skip == 0) { |
926 | die "directory $dir_loc is still tainted"; | |
a0d0e21e | 927 | } |
237437d0 | 928 | else { |
81793b90 | 929 | next; |
237437d0 | 930 | } |
a0d0e21e LW |
931 | } |
932 | } | |
7e47e6ff | 933 | unless (chdir $updir_loc) { |
3fa6e24b | 934 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
81793b90 GS |
935 | next; |
936 | } | |
937 | } | |
938 | ||
7e47e6ff JH |
939 | if ($Is_MacOS) { |
940 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); | |
941 | } | |
942 | ||
943 | $dir = $dir_name; # $File::Find::dir | |
81793b90 GS |
944 | |
945 | # Get the list of files in the current directory. | |
7e47e6ff | 946 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
3fa6e24b | 947 | warn "Can't opendir($dir_loc): $!\n" if $^W; |
81793b90 GS |
948 | next; |
949 | } | |
950 | @filenames = readdir DIR; | |
951 | closedir(DIR); | |
952 | ||
953 | for my $FN (@filenames) { | |
7e47e6ff | 954 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 GS |
955 | |
956 | # follow symbolic links / do an lstat | |
07867069 | 957 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 GS |
958 | |
959 | # ignore if invalid symlink | |
960 | next unless defined $new_loc; | |
7e47e6ff | 961 | |
81793b90 | 962 | if (-d _) { |
7e47e6ff | 963 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 GS |
964 | } |
965 | else { | |
7e47e6ff JH |
966 | $fullname = $new_loc; # $File::Find::fullname |
967 | $name = $dir_pref . $FN; # $File::Find::name | |
968 | $_ = ($no_chdir ? $name : $FN); # $_ | |
73396e07 | 969 | { &$wanted_callback }; # protect against wild "next" |
81793b90 GS |
970 | } |
971 | } | |
972 | ||
81793b90 GS |
973 | } |
974 | continue { | |
57e73c4b | 975 | while (defined($SE = pop @Stack)) { |
7e47e6ff JH |
976 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
977 | if ($Is_MacOS) { | |
978 | # $p_dir always has a trailing ':', except for the starting dir, | |
979 | # where $dir_rel eq ':' | |
980 | $dir_name = "$p_dir$dir_rel"; | |
981 | $dir_pref = "$dir_name:"; | |
982 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; | |
983 | } | |
984 | else { | |
985 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); | |
986 | $dir_pref = "$dir_name/"; | |
987 | $loc_pref = "$dir_loc/"; | |
988 | } | |
989 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now | |
990 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { | |
991 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted | |
3fa6e24b | 992 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
7e47e6ff JH |
993 | next; |
994 | } | |
995 | } | |
996 | $fullname = $dir_loc; # $File::Find::fullname | |
997 | $name = $dir_name; # $File::Find::name | |
998 | if ($Is_MacOS) { | |
999 | if ($dir_rel eq ':') { # must be the top dir, where we started | |
1000 | $name =~ s|:$||; # $File::Find::name | |
1001 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); | |
1002 | } | |
1003 | $dir = $p_dir; # $File::Find::dir | |
1004 | $_ = ($no_chdir ? $name : $dir_rel); # $_ | |
1005 | } | |
1006 | else { | |
1007 | if ( substr($name,-2) eq '/.' ) { | |
1008 | $name =~ s|/\.$||; # $File::Find::name | |
1009 | } | |
1010 | $dir = $p_dir; # $File::Find::dir | |
1011 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ | |
1012 | if ( substr($_,-2) eq '/.' ) { | |
1013 | s|/\.$||; | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | lstat($_); # make sure file tests with '_' work | |
1018 | { &$wanted_callback }; # protect against wild "next" | |
1019 | } | |
1020 | else { | |
1021 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; | |
1022 | last; | |
1023 | } | |
a0d0e21e LW |
1024 | } |
1025 | } | |
1026 | } | |
1027 | ||
81793b90 | 1028 | |
20408e3c | 1029 | sub wrap_wanted { |
81793b90 GS |
1030 | my $wanted = shift; |
1031 | if ( ref($wanted) eq 'HASH' ) { | |
1032 | if ( $wanted->{follow} || $wanted->{follow_fast}) { | |
1033 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; | |
1034 | } | |
1035 | if ( $wanted->{untaint} ) { | |
7e47e6ff | 1036 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 GS |
1037 | unless defined $wanted->{untaint_pattern}; |
1038 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; | |
1039 | } | |
1040 | return $wanted; | |
1041 | } | |
1042 | else { | |
1043 | return { wanted => $wanted }; | |
1044 | } | |
a0d0e21e LW |
1045 | } |
1046 | ||
20408e3c | 1047 | sub find { |
81793b90 GS |
1048 | my $wanted = shift; |
1049 | _find_opt(wrap_wanted($wanted), @_); | |
a0d0e21e LW |
1050 | } |
1051 | ||
55d729e4 | 1052 | sub finddepth { |
81793b90 GS |
1053 | my $wanted = wrap_wanted(shift); |
1054 | $wanted->{bydepth} = 1; | |
1055 | _find_opt($wanted, @_); | |
20408e3c | 1056 | } |
6280b799 | 1057 | |
7e47e6ff JH |
1058 | # default |
1059 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; | |
1060 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; | |
1061 | ||
6280b799 | 1062 | # These are hard-coded for now, but may move to hint files. |
10eba763 | 1063 | if ($^O eq 'VMS') { |
81793b90 | 1064 | $Is_VMS = 1; |
7e47e6ff JH |
1065 | $File::Find::dont_use_nlink = 1; |
1066 | } | |
1067 | elsif ($^O eq 'MacOS') { | |
1068 | $Is_MacOS = 1; | |
1069 | $File::Find::dont_use_nlink = 1; | |
1070 | $File::Find::skip_pattern = qr/^Icon\015\z/; | |
1071 | $File::Find::untaint_pattern = qr|^(.+)$|; | |
748a9306 LW |
1072 | } |
1073 | ||
7e47e6ff JH |
1074 | # this _should_ work properly on all platforms |
1075 | # where File::Find can be expected to work | |
1076 | $File::Find::current_dir = File::Spec->curdir || '.'; | |
1077 | ||
81793b90 | 1078 | $File::Find::dont_use_nlink = 1 |
497711e7 | 1079 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
2986a63f | 1080 | $^O eq 'cygwin' || $^O eq 'epoc' || $^O eq 'NetWare'; |
6280b799 | 1081 | |
20408e3c GS |
1082 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1083 | # report the number of links in a directory as an indication | |
1084 | # of the number of files. | |
1085 | # See, e.g. hints/machten.sh for MachTen 2.2. | |
81793b90 GS |
1086 | unless ($File::Find::dont_use_nlink) { |
1087 | require Config; | |
1088 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); | |
20408e3c GS |
1089 | } |
1090 | ||
7e47e6ff JH |
1091 | # We need a function that checks if a scalar is tainted. Either use the |
1092 | # Scalar::Util module's tainted() function or our (slower) pure Perl | |
1093 | # fallback is_tainted_pp() | |
1094 | { | |
1095 | local $@; | |
1096 | eval { require Scalar::Util }; | |
1097 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; | |
1098 | } | |
1099 | ||
a0d0e21e | 1100 | 1; |