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1 | package File::Find; |
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2 | use 5.006; |
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3 | use strict; |
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4 | use warnings; |
cd68ec93 |
5 | use warnings::register; |
6 | our $VERSION = '1.04'; |
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7 | require Exporter; |
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8 | require Cwd; |
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9 | |
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10 | =head1 NAME |
11 | |
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12 | File::Find - Traverse a directory tree. |
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13 | |
14 | =head1 SYNOPSIS |
15 | |
16 | use File::Find; |
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17 | find(\&wanted, @directories_to_seach); |
f06db76b |
18 | sub wanted { ... } |
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19 | |
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20 | use File::Find; |
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21 | finddepth(\&wanted, @directories_to_search); |
f06db76b |
22 | sub wanted { ... } |
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23 | |
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24 | use File::Find; |
25 | find({ wanted => \&process, follow => 1 }, '.'); |
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26 | |
27 | =head1 DESCRIPTION |
28 | |
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29 | These are functions for searching through directory trees doing work |
30 | on each file found similar to the Unix I<find> command. File::Find |
31 | exports two functions, C<find> and C<finddepth>. They work similarly |
32 | but have subtle differences. |
33 | |
34 | =over 4 |
35 | |
36 | =item B<find> |
37 | |
38 | find(\&wanted, @directories); |
39 | find(\%options, @directories); |
40 | |
41 | find() does a breadth-first search over the given @directories in the |
42 | order they are given. In essense, it works from the top down. |
43 | |
44 | For each file or directory found the &wanted subroutine is called (see |
45 | below for details). Additionally, for each directory found it will go |
46 | into that directory and continue the search. |
47 | |
48 | =item B<finddepth> |
49 | |
50 | finddepth(\&wanted, @directories); |
51 | finddepth(\%options, @directories); |
52 | |
53 | finddepth() works just like find() except it does a depth-first search. |
54 | It works from the bottom of the directory tree up. |
55 | |
56 | =back |
57 | |
58 | =head2 %options |
59 | |
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60 | The first argument to find() is either a hash reference describing the |
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61 | operations to be performed for each file, or a code reference. The |
62 | code reference is described in L<The wanted function> below. |
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63 | |
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64 | Here are the possible keys for the hash: |
65 | |
66 | =over 3 |
67 | |
68 | =item C<wanted> |
69 | |
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70 | The value should be a code reference. This code reference is |
71 | described in L<The wanted function> below. |
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72 | |
73 | =item C<bydepth> |
74 | |
75 | Reports the name of a directory only AFTER all its entries |
76 | have been reported. Entry point finddepth() is a shortcut for |
f801979b |
77 | specifying C<{ bydepth =E<gt> 1 }> in the first argument of find(). |
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78 | |
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79 | =item C<preprocess> |
80 | |
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81 | The value should be a code reference. This code reference is used to |
82 | preprocess the current directory. The name of currently processed |
83 | directory is in $File::Find::dir. Your preprocessing function is |
84 | called after readdir() but before the loop that calls the wanted() |
85 | function. It is called with a list of strings (actually file/directory |
86 | names) and is expected to return a list of strings. The code can be |
87 | used to sort the file/directory names alphabetically, numerically, |
88 | or to filter out directory entries based on their name alone. When |
89 | I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. |
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90 | |
91 | =item C<postprocess> |
92 | |
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93 | The value should be a code reference. It is invoked just before leaving |
94 | the currently processed directory. It is called in void context with no |
95 | arguments. The name of the current directory is in $File::Find::dir. This |
96 | hook is handy for summarizing a directory, such as calculating its disk |
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97 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
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98 | no-op. |
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99 | |
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100 | =item C<follow> |
101 | |
102 | Causes symbolic links to be followed. Since directory trees with symbolic |
103 | links (followed) may contain files more than once and may even have |
104 | cycles, a hash has to be built up with an entry for each file. |
105 | This might be expensive both in space and time for a large |
106 | directory tree. See I<follow_fast> and I<follow_skip> below. |
107 | If either I<follow> or I<follow_fast> is in effect: |
108 | |
109 | =over 6 |
110 | |
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111 | =item * |
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112 | |
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113 | It is guaranteed that an I<lstat> has been called before the user's |
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114 | I<wanted()> function is called. This enables fast file checks involving S< _>. |
115 | |
a45bd81d |
116 | =item * |
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117 | |
118 | There is a variable C<$File::Find::fullname> which holds the absolute |
119 | pathname of the file with all symbolic links resolved |
120 | |
121 | =back |
122 | |
123 | =item C<follow_fast> |
124 | |
f10e1564 |
125 | This is similar to I<follow> except that it may report some files more |
126 | than once. It does detect cycles, however. Since only symbolic links |
127 | have to be hashed, this is much cheaper both in space and time. If |
128 | processing a file more than once (by the user's I<wanted()> function) |
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129 | is worse than just taking time, the option I<follow> should be used. |
130 | |
131 | =item C<follow_skip> |
132 | |
133 | C<follow_skip==1>, which is the default, causes all files which are |
134 | neither directories nor symbolic links to be ignored if they are about |
135 | to be processed a second time. If a directory or a symbolic link |
136 | are about to be processed a second time, File::Find dies. |
137 | C<follow_skip==0> causes File::Find to die if any file is about to be |
138 | processed a second time. |
139 | C<follow_skip==2> causes File::Find to ignore any duplicate files and |
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140 | directories but to proceed normally otherwise. |
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141 | |
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142 | =item C<dangling_symlinks> |
143 | |
144 | If true and a code reference, will be called with the symbolic link |
145 | name and the directory it lives in as arguments. Otherwise, if true |
146 | and warnings are on, warning "symbolic_link_name is a dangling |
147 | symbolic link\n" will be issued. If false, the dangling symbolic link |
148 | will be silently ignored. |
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149 | |
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150 | =item C<no_chdir> |
151 | |
152 | Does not C<chdir()> to each directory as it recurses. The wanted() |
153 | function will need to be aware of this, of course. In this case, |
154 | C<$_> will be the same as C<$File::Find::name>. |
155 | |
156 | =item C<untaint> |
157 | |
158 | If find is used in taint-mode (-T command line switch or if EUID != UID |
159 | or if EGID != GID) then internally directory names have to be untainted |
7e47e6ff |
160 | before they can be chdir'ed to. Therefore they are checked against a regular |
161 | expression I<untaint_pattern>. Note that all names passed to the user's |
162 | I<wanted()> function are still tainted. If this option is used while |
163 | not in taint-mode, C<untaint> is a no-op. |
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164 | |
165 | =item C<untaint_pattern> |
166 | |
167 | See above. This should be set using the C<qr> quoting operator. |
168 | The default is set to C<qr|^([-+@\w./]+)$|>. |
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169 | Note that the parentheses are vital. |
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170 | |
171 | =item C<untaint_skip> |
172 | |
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173 | If set, a directory which fails the I<untaint_pattern> is skipped, |
174 | including all its sub-directories. The default is to 'die' in such a case. |
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175 | |
176 | =back |
177 | |
abfdd623 |
178 | =head2 The wanted function |
179 | |
180 | The wanted() function does whatever verifications you want on each |
181 | file and directory. It takes no arguments but rather does its work |
182 | through a collection of variables. |
183 | |
184 | =over 4 |
185 | |
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186 | =item C<$File::Find::dir> is the current directory name, |
abfdd623 |
187 | |
188 | =item C<$_> is the current filename within that directory |
189 | |
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190 | =item C<$File::Find::name> is the complete pathname to the file. |
abfdd623 |
191 | |
192 | =back |
193 | |
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194 | Don't modify these variables. |
195 | |
abfdd623 |
196 | For example, when examining the file /some/path/foo.ext you will have: |
197 | |
198 | $File::Find::dir = /some/path/ |
199 | $_ = foo.ext |
200 | $File::Find::name = /some/path/foo.ext |
201 | |
202 | You are chdir()'d toC<$File::Find::dir> when the function is called, |
203 | unless C<no_chdir> was specified. Note that when changing to |
204 | directories is in effect the root directory (F</>) is a somewhat |
205 | special case inasmuch as the concatenation of C<$File::Find::dir>, |
206 | C<'/'> and C<$_> is not literally equal to C<$File::Find::name>. The |
207 | table below summarizes all variants: |
5cf0a2f2 |
208 | |
209 | $File::Find::name $File::Find::dir $_ |
210 | default / / . |
211 | no_chdir=>0 /etc / etc |
212 | /etc/x /etc x |
abfdd623 |
213 | |
5cf0a2f2 |
214 | no_chdir=>1 / / / |
215 | /etc / /etc |
216 | /etc/x /etc /etc/x |
217 | |
218 | |
219 | When <follow> or <follow_fast> are in effect, there is |
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220 | also a C<$File::Find::fullname>. The function may set |
221 | C<$File::Find::prune> to prune the tree unless C<bydepth> was |
222 | specified. Unless C<follow> or C<follow_fast> is specified, for |
223 | compatibility reasons (find.pl, find2perl) there are in addition the |
224 | following globals available: C<$File::Find::topdir>, |
225 | C<$File::Find::topdev>, C<$File::Find::topino>, |
e7b91b67 |
226 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
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227 | |
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228 | This library is useful for the C<find2perl> tool, which when fed, |
f06db76b |
229 | |
230 | find2perl / -name .nfs\* -mtime +7 \ |
81793b90 |
231 | -exec rm -f {} \; -o -fstype nfs -prune |
f06db76b |
232 | |
233 | produces something like: |
234 | |
235 | sub wanted { |
c7b9dd21 |
236 | /^\.nfs.*\z/s && |
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237 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
f06db76b |
238 | int(-M _) > 7 && |
239 | unlink($_) |
240 | || |
81793b90 |
241 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
f06db76b |
242 | $dev < 0 && |
6280b799 |
243 | ($File::Find::prune = 1); |
f06db76b |
244 | } |
245 | |
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246 | Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical |
247 | filehandle that caches the information from the preceding |
248 | stat(), lstat(), or filetest. |
249 | |
1cffc1dd |
250 | Here's another interesting wanted function. It will find all symbolic |
251 | links that don't resolve: |
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252 | |
253 | sub wanted { |
81793b90 |
254 | -l && !-e && print "bogus link: $File::Find::name\n"; |
237437d0 |
255 | } |
f06db76b |
256 | |
81793b90 |
257 | See also the script C<pfind> on CPAN for a nice application of this |
258 | module. |
259 | |
cd68ec93 |
260 | =head1 WARNINGS |
261 | |
262 | If you run your program with the C<-w> switch, or if you use the |
263 | C<warnings> pragma, File::Find will report warnings for several weird |
264 | situations. You can disable these warnings by putting the statement |
265 | |
266 | no warnings 'File::Find'; |
267 | |
268 | in the appropriate scope. See L<perllexwarn> for more info about lexical |
269 | warnings. |
270 | |
81793b90 |
271 | =head1 CAVEAT |
272 | |
5fa2bf2b |
273 | =over 2 |
274 | |
275 | =item $dont_use_nlink |
276 | |
277 | You can set the variable C<$File::Find::dont_use_nlink> to 1, if you want to |
6cf3b067 |
278 | force File::Find to always stat directories. This was used for file systems |
279 | that do not have an C<nlink> count matching the number of sub-directories. |
280 | Examples are ISO-9660 (CD-ROM), AFS, HPFS (OS/2 file system), FAT (DOS file |
281 | system) and a couple of others. |
5fa2bf2b |
282 | |
6cf3b067 |
283 | You shouldn't need to set this variable, since File::Find should now detect |
284 | such file systems on-the-fly and switch itself to using stat. This works even |
285 | for parts of your file system, like a mounted CD-ROM. |
5fa2bf2b |
286 | |
6cf3b067 |
287 | If you do set C<$File::Find::dont_use_nlink> to 1, you will notice slow-downs. |
5fa2bf2b |
288 | |
289 | =item symlinks |
290 | |
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291 | Be aware that the option to follow symbolic links can be dangerous. |
81793b90 |
292 | Depending on the structure of the directory tree (including symbolic |
293 | links to directories) you might traverse a given (physical) directory |
294 | more than once (only if C<follow_fast> is in effect). |
295 | Furthermore, deleting or changing files in a symbolically linked directory |
296 | might cause very unpleasant surprises, since you delete or change files |
297 | in an unknown directory. |
0530a6c4 |
298 | |
5fa2bf2b |
299 | =back |
300 | |
7e47e6ff |
301 | =head1 NOTES |
302 | |
303 | =over 4 |
304 | |
305 | =item * |
306 | |
307 | Mac OS (Classic) users should note a few differences: |
308 | |
309 | =over 4 |
310 | |
311 | =item * |
312 | |
313 | The path separator is ':', not '/', and the current directory is denoted |
314 | as ':', not '.'. You should be careful about specifying relative pathnames. |
315 | While a full path always begins with a volume name, a relative pathname |
316 | should always begin with a ':'. If specifying a volume name only, a |
317 | trailing ':' is required. |
318 | |
319 | =item * |
320 | |
321 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> |
322 | contains the name of a directory, that name may or may not end with a |
323 | ':'. Likewise, C<$File::Find::name>, which contains the complete |
324 | pathname to that directory, and C<$File::Find::fullname>, which holds |
325 | the absolute pathname of that directory with all symbolic links resolved, |
326 | may or may not end with a ':'. |
327 | |
328 | =item * |
329 | |
330 | The default C<untaint_pattern> (see above) on Mac OS is set to |
331 | C<qr|^(.+)$|>. Note that the parentheses are vital. |
332 | |
333 | =item * |
334 | |
335 | The invisible system file "Icon\015" is ignored. While this file may |
336 | appear in every directory, there are some more invisible system files |
337 | on every volume, which are all located at the volume root level (i.e. |
338 | "MacintoshHD:"). These system files are B<not> excluded automatically. |
339 | Your filter may use the following code to recognize invisible files or |
340 | directories (requires Mac::Files): |
341 | |
342 | use Mac::Files; |
343 | |
344 | # invisible() -- returns 1 if file/directory is invisible, |
1cffc1dd |
345 | # 0 if it's visible or undef if an error occurred |
7e47e6ff |
346 | |
347 | sub invisible($) { |
348 | my $file = shift; |
349 | my ($fileCat, $fileInfo); |
350 | my $invisible_flag = 1 << 14; |
351 | |
352 | if ( $fileCat = FSpGetCatInfo($file) ) { |
353 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { |
354 | return (($fileInfo->fdFlags & $invisible_flag) && 1); |
355 | } |
356 | } |
357 | return undef; |
358 | } |
359 | |
360 | Generally, invisible files are system files, unless an odd application |
361 | decides to use invisible files for its own purposes. To distinguish |
362 | such files from system files, you have to look at the B<type> and B<creator> |
363 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and |
364 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes |
365 | (see MacPerl.pm for details). |
366 | |
367 | Files that appear on the desktop actually reside in an (hidden) directory |
368 | named "Desktop Folder" on the particular disk volume. Note that, although |
369 | all desktop files appear to be on the same "virtual" desktop, each disk |
370 | volume actually maintains its own "Desktop Folder" directory. |
371 | |
372 | =back |
373 | |
374 | =back |
0530a6c4 |
375 | |
a85af077 |
376 | =head1 HISTORY |
377 | |
378 | File::Find used to produce incorrect results if called recursively. |
379 | During the development of perl 5.8 this bug was fixed. |
380 | The first fixed version of File::Find was 1.01. |
381 | |
f06db76b |
382 | =cut |
383 | |
b75c8c73 |
384 | our @ISA = qw(Exporter); |
385 | our @EXPORT = qw(find finddepth); |
6280b799 |
386 | |
a0d0e21e |
387 | |
81793b90 |
388 | use strict; |
389 | my $Is_VMS; |
7e47e6ff |
390 | my $Is_MacOS; |
81793b90 |
391 | |
392 | require File::Basename; |
7e47e6ff |
393 | require File::Spec; |
81793b90 |
394 | |
9f826d6a |
395 | # Should ideally be my() not our() but local() currently |
396 | # refuses to operate on lexicals |
397 | |
398 | our %SLnkSeen; |
399 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
719c805e |
400 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
401 | $pre_process, $post_process, $dangling_symlinks); |
81793b90 |
402 | |
403 | sub contract_name { |
404 | my ($cdir,$fn) = @_; |
405 | |
7e47e6ff |
406 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
81793b90 |
407 | |
408 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); |
409 | |
410 | $fn =~ s|^\./||; |
411 | |
412 | my $abs_name= $cdir . $fn; |
413 | |
414 | if (substr($fn,0,3) eq '../') { |
fecbda2b |
415 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
81793b90 |
416 | } |
417 | |
418 | return $abs_name; |
419 | } |
420 | |
7e47e6ff |
421 | # return the absolute name of a directory or file |
422 | sub contract_name_Mac { |
423 | my ($cdir,$fn) = @_; |
424 | my $abs_name; |
425 | |
426 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' |
427 | |
428 | my $colon_count = length ($1); |
429 | if ($colon_count == 1) { |
430 | $abs_name = $cdir . $2; |
431 | return $abs_name; |
432 | } |
433 | else { |
434 | # need to move up the tree, but |
435 | # only if it's not a volume name |
436 | for (my $i=1; $i<$colon_count; $i++) { |
437 | unless ($cdir =~ /^[^:]+:$/) { # volume name |
438 | $cdir =~ s/[^:]+:$//; |
439 | } |
440 | else { |
441 | return undef; |
442 | } |
443 | } |
444 | $abs_name = $cdir . $2; |
445 | return $abs_name; |
446 | } |
447 | |
448 | } |
449 | else { |
450 | |
451 | # $fn may be a valid path to a directory or file or (dangling) |
452 | # symlink, without a leading ':' |
453 | if ( (-e $fn) || (-l $fn) ) { |
454 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* |
455 | return $fn; # $fn is already an absolute path |
456 | } |
457 | else { |
458 | $abs_name = $cdir . $fn; |
459 | return $abs_name; |
460 | } |
461 | } |
462 | else { # argh!, $fn is not a valid directory/file |
463 | return undef; |
464 | } |
465 | } |
466 | } |
81793b90 |
467 | |
468 | sub PathCombine($$) { |
469 | my ($Base,$Name) = @_; |
470 | my $AbsName; |
471 | |
7e47e6ff |
472 | if ($Is_MacOS) { |
473 | # $Name is the resolved symlink (always a full path on MacOS), |
474 | # i.e. there's no need to call contract_name_Mac() |
475 | $AbsName = $Name; |
476 | |
477 | # (simple) check for recursion |
478 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion |
479 | return undef; |
480 | } |
81793b90 |
481 | } |
482 | else { |
7e47e6ff |
483 | if (substr($Name,0,1) eq '/') { |
484 | $AbsName= $Name; |
485 | } |
486 | else { |
487 | $AbsName= contract_name($Base,$Name); |
488 | } |
81793b90 |
489 | |
7e47e6ff |
490 | # (simple) check for recursion |
491 | my $newlen= length($AbsName); |
492 | if ($newlen <= length($Base)) { |
493 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') |
494 | && $AbsName eq substr($Base,0,$newlen)) |
495 | { |
496 | return undef; |
497 | } |
81793b90 |
498 | } |
499 | } |
500 | return $AbsName; |
501 | } |
502 | |
503 | sub Follow_SymLink($) { |
504 | my ($AbsName) = @_; |
505 | |
506 | my ($NewName,$DEV, $INO); |
507 | ($DEV, $INO)= lstat $AbsName; |
508 | |
509 | while (-l _) { |
510 | if ($SLnkSeen{$DEV, $INO}++) { |
511 | if ($follow_skip < 2) { |
512 | die "$AbsName is encountered a second time"; |
a0d0e21e |
513 | } |
514 | else { |
81793b90 |
515 | return undef; |
a0d0e21e |
516 | } |
517 | } |
81793b90 |
518 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
519 | unless(defined $NewName) { |
520 | if ($follow_skip < 2) { |
521 | die "$AbsName is a recursive symbolic link"; |
522 | } |
523 | else { |
524 | return undef; |
a0d0e21e |
525 | } |
81793b90 |
526 | } |
527 | else { |
528 | $AbsName= $NewName; |
529 | } |
530 | ($DEV, $INO) = lstat($AbsName); |
531 | return undef unless defined $DEV; # dangling symbolic link |
532 | } |
533 | |
cd68ec93 |
534 | if ($full_check && defined $DEV && $SLnkSeen{$DEV, $INO}++) { |
7e47e6ff |
535 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
81793b90 |
536 | die "$AbsName encountered a second time"; |
537 | } |
538 | else { |
539 | return undef; |
540 | } |
541 | } |
542 | |
543 | return $AbsName; |
544 | } |
545 | |
17f410f9 |
546 | our($dir, $name, $fullname, $prune); |
81793b90 |
547 | sub _find_dir_symlnk($$$); |
548 | sub _find_dir($$$); |
549 | |
7e47e6ff |
550 | # check whether or not a scalar variable is tainted |
551 | # (code straight from the Camel, 3rd ed., page 561) |
552 | sub is_tainted_pp { |
553 | my $arg = shift; |
554 | my $nada = substr($arg, 0, 0); # zero-length |
555 | local $@; |
556 | eval { eval "# $nada" }; |
557 | return length($@) != 0; |
558 | } |
559 | |
81793b90 |
560 | sub _find_opt { |
561 | my $wanted = shift; |
562 | die "invalid top directory" unless defined $_[0]; |
563 | |
9f826d6a |
564 | # This function must local()ize everything because callbacks may |
565 | # call find() or finddepth() |
566 | |
567 | local %SLnkSeen; |
568 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
569 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
570 | $pre_process, $post_process, $dangling_symlinks); |
9f826d6a |
571 | local($dir, $name, $fullname, $prune); |
572 | |
a0c9c202 |
573 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::getcwd(); |
80e52b73 |
574 | my $cwd_untainted = $cwd; |
575 | my $check_t_cwd = 1; |
576 | $wanted_callback = $wanted->{wanted}; |
577 | $bydepth = $wanted->{bydepth}; |
578 | $pre_process = $wanted->{preprocess}; |
579 | $post_process = $wanted->{postprocess}; |
580 | $no_chdir = $wanted->{no_chdir}; |
581 | $full_check = $wanted->{follow}; |
582 | $follow = $full_check || $wanted->{follow_fast}; |
583 | $follow_skip = $wanted->{follow_skip}; |
584 | $untaint = $wanted->{untaint}; |
585 | $untaint_pat = $wanted->{untaint_pattern}; |
586 | $untaint_skip = $wanted->{untaint_skip}; |
587 | $dangling_symlinks = $wanted->{dangling_symlinks}; |
81793b90 |
588 | |
1cffc1dd |
589 | # for compatibility reasons (find.pl, find2perl) |
9f826d6a |
590 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 |
591 | |
592 | # a symbolic link to a directory doesn't increase the link count |
593 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; |
594 | |
e7b91b67 |
595 | my ($abs_dir, $Is_Dir); |
81793b90 |
596 | |
597 | Proc_Top_Item: |
598 | foreach my $TOP (@_) { |
7e47e6ff |
599 | my $top_item = $TOP; |
600 | |
601 | if ($Is_MacOS) { |
602 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
603 | $top_item = ":$top_item" |
3fa6e24b |
604 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff |
605 | } |
606 | else { |
607 | $top_item =~ s|/\z|| unless $top_item eq '/'; |
608 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
609 | } |
610 | |
611 | $Is_Dir= 0; |
612 | |
613 | if ($follow) { |
614 | |
615 | if ($Is_MacOS) { |
616 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety |
617 | |
618 | if ($top_item eq $File::Find::current_dir) { |
619 | $abs_dir = $cwd; |
620 | } |
621 | else { |
622 | $abs_dir = contract_name_Mac($cwd, $top_item); |
623 | unless (defined $abs_dir) { |
cd68ec93 |
624 | warnings::warnif "Can't determine absolute path for $top_item (No such file or directory)\n"; |
7e47e6ff |
625 | next Proc_Top_Item; |
626 | } |
627 | } |
628 | |
629 | } |
630 | else { |
631 | if (substr($top_item,0,1) eq '/') { |
632 | $abs_dir = $top_item; |
633 | } |
634 | elsif ($top_item eq $File::Find::current_dir) { |
635 | $abs_dir = $cwd; |
636 | } |
637 | else { # care about any ../ |
638 | $abs_dir = contract_name("$cwd/",$top_item); |
639 | } |
640 | } |
641 | $abs_dir= Follow_SymLink($abs_dir); |
642 | unless (defined $abs_dir) { |
80e52b73 |
643 | if ($dangling_symlinks) { |
644 | if (ref $dangling_symlinks eq 'CODE') { |
645 | $dangling_symlinks->($top_item, $cwd); |
646 | } else { |
cd68ec93 |
647 | warnings::warnif "$top_item is a dangling symbolic link\n"; |
80e52b73 |
648 | } |
649 | } |
81793b90 |
650 | next Proc_Top_Item; |
7e47e6ff |
651 | } |
652 | |
653 | if (-d _) { |
81793b90 |
654 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
655 | $Is_Dir= 1; |
7e47e6ff |
656 | } |
657 | } |
81793b90 |
658 | else { # no follow |
7e47e6ff |
659 | $topdir = $top_item; |
660 | unless (defined $topnlink) { |
cd68ec93 |
661 | warnings::warnif "Can't stat $top_item: $!\n"; |
7e47e6ff |
662 | next Proc_Top_Item; |
663 | } |
664 | if (-d _) { |
c7b9dd21 |
665 | $top_item =~ s/\.dir\z// if $Is_VMS; |
e7b91b67 |
666 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 |
667 | $Is_Dir= 1; |
7e47e6ff |
668 | } |
237437d0 |
669 | else { |
81793b90 |
670 | $abs_dir= $top_item; |
7e47e6ff |
671 | } |
672 | } |
81793b90 |
673 | |
7e47e6ff |
674 | unless ($Is_Dir) { |
81793b90 |
675 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff |
676 | if ($Is_MacOS) { |
677 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ |
678 | } |
679 | else { |
680 | ($dir,$_) = ('./', $top_item); |
681 | } |
81793b90 |
682 | } |
683 | |
7e47e6ff |
684 | $abs_dir = $dir; |
685 | if (( $untaint ) && (is_tainted($dir) )) { |
686 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; |
81793b90 |
687 | unless (defined $abs_dir) { |
688 | if ($untaint_skip == 0) { |
7e47e6ff |
689 | die "directory $dir is still tainted"; |
81793b90 |
690 | } |
691 | else { |
692 | next Proc_Top_Item; |
693 | } |
694 | } |
7e47e6ff |
695 | } |
81793b90 |
696 | |
7e47e6ff |
697 | unless ($no_chdir || chdir $abs_dir) { |
cd68ec93 |
698 | warnings::warnif "Couldn't chdir $abs_dir: $!\n"; |
7e47e6ff |
699 | next Proc_Top_Item; |
700 | } |
719911cc |
701 | |
7e47e6ff |
702 | $name = $abs_dir . $_; # $File::Find::name |
719911cc |
703 | |
abfdd623 |
704 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
705 | |
7e47e6ff |
706 | } |
81793b90 |
707 | |
7e47e6ff |
708 | unless ( $no_chdir ) { |
709 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { |
710 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; |
711 | unless (defined $cwd_untainted) { |
712 | die "insecure cwd in find(depth)"; |
713 | } |
714 | $check_t_cwd = 0; |
715 | } |
716 | unless (chdir $cwd_untainted) { |
717 | die "Can't cd to $cwd: $!\n"; |
718 | } |
719 | } |
81793b90 |
720 | } |
721 | } |
722 | |
723 | # API: |
724 | # $wanted |
725 | # $p_dir : "parent directory" |
726 | # $nlink : what came back from the stat |
727 | # preconditions: |
728 | # chdir (if not no_chdir) to dir |
729 | |
730 | sub _find_dir($$$) { |
731 | my ($wanted, $p_dir, $nlink) = @_; |
732 | my ($CdLvl,$Level) = (0,0); |
733 | my @Stack; |
734 | my @filenames; |
735 | my ($subcount,$sub_nlink); |
736 | my $SE= []; |
737 | my $dir_name= $p_dir; |
7e47e6ff |
738 | my $dir_pref; |
39e79f6b |
739 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
740 | my $tainted = 0; |
5fa2bf2b |
741 | my $no_nlink; |
7e47e6ff |
742 | |
743 | if ($Is_MacOS) { |
744 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface |
7e47e6ff |
745 | } |
746 | else { |
747 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
7e47e6ff |
748 | } |
81793b90 |
749 | |
750 | local ($dir, $name, $prune, *DIR); |
7e47e6ff |
751 | |
752 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { |
81793b90 |
753 | my $udir = $p_dir; |
7e47e6ff |
754 | if (( $untaint ) && (is_tainted($p_dir) )) { |
755 | ( $udir ) = $p_dir =~ m|$untaint_pat|; |
81793b90 |
756 | unless (defined $udir) { |
757 | if ($untaint_skip == 0) { |
758 | die "directory $p_dir is still tainted"; |
759 | } |
760 | else { |
761 | return; |
762 | } |
237437d0 |
763 | } |
a0d0e21e |
764 | } |
81793b90 |
765 | unless (chdir $udir) { |
cd68ec93 |
766 | warnings::warnif "Can't cd to $udir: $!\n"; |
81793b90 |
767 | return; |
768 | } |
769 | } |
7e47e6ff |
770 | |
771 | # push the starting directory |
57e73c4b |
772 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 |
773 | |
7e47e6ff |
774 | if ($Is_MacOS) { |
775 | $p_dir = $dir_pref; # ensure trailing ':' |
776 | } |
777 | |
81793b90 |
778 | while (defined $SE) { |
779 | unless ($bydepth) { |
7e47e6ff |
780 | $dir= $p_dir; # $File::Find::dir |
781 | $name= $dir_name; # $File::Find::name |
782 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
81793b90 |
783 | # prune may happen here |
7e47e6ff |
784 | $prune= 0; |
abfdd623 |
785 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
786 | next if $prune; |
81793b90 |
787 | } |
7e47e6ff |
788 | |
81793b90 |
789 | # change to that directory |
7e47e6ff |
790 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 |
791 | my $udir= $dir_rel; |
7e47e6ff |
792 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
793 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; |
81793b90 |
794 | unless (defined $udir) { |
795 | if ($untaint_skip == 0) { |
7e47e6ff |
796 | if ($Is_MacOS) { |
797 | die "directory ($p_dir) $dir_rel is still tainted"; |
798 | } |
799 | else { |
800 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; |
801 | } |
802 | } else { # $untaint_skip == 1 |
803 | next; |
81793b90 |
804 | } |
805 | } |
806 | } |
807 | unless (chdir $udir) { |
7e47e6ff |
808 | if ($Is_MacOS) { |
cd68ec93 |
809 | warnings::warnif "Can't cd to ($p_dir) $udir: $!\n"; |
7e47e6ff |
810 | } |
811 | else { |
cd68ec93 |
812 | warnings::warnif "Can't cd to (" . |
813 | ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n"; |
7e47e6ff |
814 | } |
81793b90 |
815 | next; |
816 | } |
817 | $CdLvl++; |
818 | } |
819 | |
7e47e6ff |
820 | if ($Is_MacOS) { |
821 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
822 | } |
823 | |
824 | $dir= $dir_name; # $File::Find::dir |
81793b90 |
825 | |
826 | # Get the list of files in the current directory. |
7e47e6ff |
827 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
cd68ec93 |
828 | warnings::warnif "Can't opendir($dir_name): $!\n"; |
81793b90 |
829 | next; |
830 | } |
831 | @filenames = readdir DIR; |
832 | closedir(DIR); |
abfdd623 |
833 | @filenames = $pre_process->(@filenames) if $pre_process; |
719c805e |
834 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; |
81793b90 |
835 | |
5fa2bf2b |
836 | # default: use whatever was specifid |
837 | # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back) |
838 | $no_nlink = $avoid_nlink; |
839 | # if dir has wrong nlink count, force switch to slower stat method |
840 | $no_nlink = 1 if ($nlink < 2); |
841 | |
842 | if ($nlink == 2 && !$no_nlink) { |
81793b90 |
843 | # This dir has no subdirectories. |
844 | for my $FN (@filenames) { |
7e47e6ff |
845 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
846 | |
7e47e6ff |
847 | $name = $dir_pref . $FN; # $File::Find::name |
848 | $_ = ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
849 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
850 | } |
851 | |
852 | } |
853 | else { |
854 | # This dir has subdirectories. |
855 | $subcount = $nlink - 2; |
856 | |
857 | for my $FN (@filenames) { |
7e47e6ff |
858 | next if $FN =~ $File::Find::skip_pattern; |
5fa2bf2b |
859 | if ($subcount > 0 || $no_nlink) { |
81793b90 |
860 | # Seen all the subdirs? |
861 | # check for directoriness. |
862 | # stat is faster for a file in the current directory |
07867069 |
863 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 |
864 | |
865 | if (-d _) { |
866 | --$subcount; |
c7b9dd21 |
867 | $FN =~ s/\.dir\z// if $Is_VMS; |
81793b90 |
868 | push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
869 | } |
870 | else { |
7e47e6ff |
871 | $name = $dir_pref . $FN; # $File::Find::name |
872 | $_= ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
873 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
874 | } |
875 | } |
07867069 |
876 | else { |
7e47e6ff |
877 | $name = $dir_pref . $FN; # $File::Find::name |
878 | $_= ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
879 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
880 | } |
881 | } |
882 | } |
17b275ff |
883 | } |
884 | continue { |
57e73c4b |
885 | while ( defined ($SE = pop @Stack) ) { |
81793b90 |
886 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
887 | if ($CdLvl > $Level && !$no_chdir) { |
7e47e6ff |
888 | my $tmp; |
889 | if ($Is_MacOS) { |
890 | $tmp = (':' x ($CdLvl-$Level)) . ':'; |
891 | } |
892 | else { |
893 | $tmp = join('/',('..') x ($CdLvl-$Level)); |
894 | } |
895 | die "Can't cd to $dir_name" . $tmp |
896 | unless chdir ($tmp); |
81793b90 |
897 | $CdLvl = $Level; |
898 | } |
7e47e6ff |
899 | |
900 | if ($Is_MacOS) { |
901 | # $pdir always has a trailing ':', except for the starting dir, |
902 | # where $dir_rel eq ':' |
903 | $dir_name = "$p_dir$dir_rel"; |
904 | $dir_pref = "$dir_name:"; |
905 | } |
906 | else { |
907 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
908 | $dir_pref = "$dir_name/"; |
909 | } |
910 | |
719c805e |
911 | if ( $nlink == -2 ) { |
7e47e6ff |
912 | $name = $dir = $p_dir; # $File::Find::name / dir |
39e79f6b |
913 | $_ = $File::Find::current_dir; |
abfdd623 |
914 | $post_process->(); # End-of-directory processing |
7e47e6ff |
915 | } |
916 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now |
917 | $name = $dir_name; |
918 | if ($Is_MacOS) { |
919 | if ($dir_rel eq ':') { # must be the top dir, where we started |
920 | $name =~ s|:$||; # $File::Find::name |
921 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
922 | } |
923 | $dir = $p_dir; # $File::Find::dir |
924 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
925 | } |
926 | else { |
927 | if ( substr($name,-2) eq '/.' ) { |
5cf0a2f2 |
928 | substr($name, length($name) == 2 ? -1 : -2) = ''; |
7e47e6ff |
929 | } |
930 | $dir = $p_dir; |
931 | $_ = ($no_chdir ? $dir_name : $dir_rel ); |
932 | if ( substr($_,-2) eq '/.' ) { |
5cf0a2f2 |
933 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
934 | } |
935 | } |
abfdd623 |
936 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
937 | } |
938 | else { |
939 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
940 | last; |
941 | } |
81793b90 |
942 | } |
a0d0e21e |
943 | } |
944 | } |
945 | |
81793b90 |
946 | |
947 | # API: |
948 | # $wanted |
949 | # $dir_loc : absolute location of a dir |
950 | # $p_dir : "parent directory" |
951 | # preconditions: |
952 | # chdir (if not no_chdir) to dir |
953 | |
954 | sub _find_dir_symlnk($$$) { |
7e47e6ff |
955 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 |
956 | my @Stack; |
957 | my @filenames; |
958 | my $new_loc; |
7e47e6ff |
959 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 |
960 | my $SE = []; |
961 | my $dir_name = $p_dir; |
7e47e6ff |
962 | my $dir_pref; |
963 | my $loc_pref; |
39e79f6b |
964 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
965 | my $byd_flag; # flag for pending stack entry if $bydepth |
966 | my $tainted = 0; |
967 | my $ok = 1; |
968 | |
969 | if ($Is_MacOS) { |
970 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; |
971 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; |
7e47e6ff |
972 | } else { |
973 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
974 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); |
7e47e6ff |
975 | } |
81793b90 |
976 | |
977 | local ($dir, $name, $fullname, $prune, *DIR); |
7e47e6ff |
978 | |
979 | unless ($no_chdir) { |
980 | # untaint the topdir |
981 | if (( $untaint ) && (is_tainted($dir_loc) )) { |
982 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted |
983 | # once untainted, $updir_loc is pushed on the stack (as parent directory); |
984 | # hence, we don't need to untaint the parent directory every time we chdir |
985 | # to it later |
986 | unless (defined $updir_loc) { |
81793b90 |
987 | if ($untaint_skip == 0) { |
988 | die "directory $dir_loc is still tainted"; |
989 | } |
990 | else { |
991 | return; |
992 | } |
993 | } |
994 | } |
7e47e6ff |
995 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
996 | unless ($ok) { |
cd68ec93 |
997 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
998 | return; |
999 | } |
1000 | } |
1001 | |
7e47e6ff |
1002 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
1003 | |
1004 | if ($Is_MacOS) { |
1005 | $p_dir = $dir_pref; # ensure trailing ':' |
1006 | } |
57e73c4b |
1007 | |
81793b90 |
1008 | while (defined $SE) { |
1009 | |
1010 | unless ($bydepth) { |
7e47e6ff |
1011 | # change (back) to parent directory (always untainted) |
704ea872 |
1012 | unless ($no_chdir) { |
7e47e6ff |
1013 | unless (chdir $updir_loc) { |
cd68ec93 |
1014 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
704ea872 |
1015 | next; |
1016 | } |
1017 | } |
7e47e6ff |
1018 | $dir= $p_dir; # $File::Find::dir |
1019 | $name= $dir_name; # $File::Find::name |
1020 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
1021 | $fullname= $dir_loc; # $File::Find::fullname |
81793b90 |
1022 | # prune may happen here |
7e47e6ff |
1023 | $prune= 0; |
704ea872 |
1024 | lstat($_); # make sure file tests with '_' work |
abfdd623 |
1025 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
1026 | next if $prune; |
81793b90 |
1027 | } |
1028 | |
1029 | # change to that directory |
7e47e6ff |
1030 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1031 | $updir_loc = $dir_loc; |
1032 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { |
1033 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir |
1034 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; |
1035 | unless (defined $updir_loc) { |
81793b90 |
1036 | if ($untaint_skip == 0) { |
1037 | die "directory $dir_loc is still tainted"; |
a0d0e21e |
1038 | } |
237437d0 |
1039 | else { |
81793b90 |
1040 | next; |
237437d0 |
1041 | } |
a0d0e21e |
1042 | } |
1043 | } |
7e47e6ff |
1044 | unless (chdir $updir_loc) { |
cd68ec93 |
1045 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
1046 | next; |
1047 | } |
1048 | } |
1049 | |
7e47e6ff |
1050 | if ($Is_MacOS) { |
1051 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
1052 | } |
1053 | |
1054 | $dir = $dir_name; # $File::Find::dir |
81793b90 |
1055 | |
1056 | # Get the list of files in the current directory. |
7e47e6ff |
1057 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
cd68ec93 |
1058 | warnings::warnif "Can't opendir($dir_loc): $!\n"; |
81793b90 |
1059 | next; |
1060 | } |
1061 | @filenames = readdir DIR; |
1062 | closedir(DIR); |
1063 | |
1064 | for my $FN (@filenames) { |
7e47e6ff |
1065 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
1066 | |
1067 | # follow symbolic links / do an lstat |
07867069 |
1068 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 |
1069 | |
1070 | # ignore if invalid symlink |
1071 | next unless defined $new_loc; |
7e47e6ff |
1072 | |
81793b90 |
1073 | if (-d _) { |
7e47e6ff |
1074 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 |
1075 | } |
1076 | else { |
7e47e6ff |
1077 | $fullname = $new_loc; # $File::Find::fullname |
1078 | $name = $dir_pref . $FN; # $File::Find::name |
1079 | $_ = ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
1080 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
1081 | } |
1082 | } |
1083 | |
81793b90 |
1084 | } |
1085 | continue { |
57e73c4b |
1086 | while (defined($SE = pop @Stack)) { |
7e47e6ff |
1087 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
1088 | if ($Is_MacOS) { |
1089 | # $p_dir always has a trailing ':', except for the starting dir, |
1090 | # where $dir_rel eq ':' |
1091 | $dir_name = "$p_dir$dir_rel"; |
1092 | $dir_pref = "$dir_name:"; |
1093 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; |
1094 | } |
1095 | else { |
1096 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
1097 | $dir_pref = "$dir_name/"; |
1098 | $loc_pref = "$dir_loc/"; |
1099 | } |
1100 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now |
1101 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1102 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted |
cd68ec93 |
1103 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
7e47e6ff |
1104 | next; |
1105 | } |
1106 | } |
1107 | $fullname = $dir_loc; # $File::Find::fullname |
1108 | $name = $dir_name; # $File::Find::name |
1109 | if ($Is_MacOS) { |
1110 | if ($dir_rel eq ':') { # must be the top dir, where we started |
1111 | $name =~ s|:$||; # $File::Find::name |
1112 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
1113 | } |
1114 | $dir = $p_dir; # $File::Find::dir |
1115 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
1116 | } |
1117 | else { |
1118 | if ( substr($name,-2) eq '/.' ) { |
f801979b |
1119 | substr($name, length($name) == 2 ? -1 : -2) = ''; # $File::Find::name |
7e47e6ff |
1120 | } |
1121 | $dir = $p_dir; # $File::Find::dir |
1122 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ |
1123 | if ( substr($_,-2) eq '/.' ) { |
f801979b |
1124 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
1125 | } |
1126 | } |
1127 | |
1128 | lstat($_); # make sure file tests with '_' work |
abfdd623 |
1129 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
1130 | } |
1131 | else { |
1132 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; |
1133 | last; |
1134 | } |
a0d0e21e |
1135 | } |
1136 | } |
1137 | } |
1138 | |
81793b90 |
1139 | |
20408e3c |
1140 | sub wrap_wanted { |
81793b90 |
1141 | my $wanted = shift; |
1142 | if ( ref($wanted) eq 'HASH' ) { |
1143 | if ( $wanted->{follow} || $wanted->{follow_fast}) { |
1144 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; |
1145 | } |
1146 | if ( $wanted->{untaint} ) { |
7e47e6ff |
1147 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 |
1148 | unless defined $wanted->{untaint_pattern}; |
1149 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; |
1150 | } |
1151 | return $wanted; |
1152 | } |
1153 | else { |
1154 | return { wanted => $wanted }; |
1155 | } |
a0d0e21e |
1156 | } |
1157 | |
20408e3c |
1158 | sub find { |
81793b90 |
1159 | my $wanted = shift; |
1160 | _find_opt(wrap_wanted($wanted), @_); |
a0d0e21e |
1161 | } |
1162 | |
55d729e4 |
1163 | sub finddepth { |
81793b90 |
1164 | my $wanted = wrap_wanted(shift); |
1165 | $wanted->{bydepth} = 1; |
1166 | _find_opt($wanted, @_); |
20408e3c |
1167 | } |
6280b799 |
1168 | |
7e47e6ff |
1169 | # default |
1170 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; |
1171 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; |
1172 | |
6280b799 |
1173 | # These are hard-coded for now, but may move to hint files. |
10eba763 |
1174 | if ($^O eq 'VMS') { |
81793b90 |
1175 | $Is_VMS = 1; |
7e47e6ff |
1176 | $File::Find::dont_use_nlink = 1; |
1177 | } |
1178 | elsif ($^O eq 'MacOS') { |
1179 | $Is_MacOS = 1; |
1180 | $File::Find::dont_use_nlink = 1; |
1181 | $File::Find::skip_pattern = qr/^Icon\015\z/; |
1182 | $File::Find::untaint_pattern = qr|^(.+)$|; |
748a9306 |
1183 | } |
1184 | |
7e47e6ff |
1185 | # this _should_ work properly on all platforms |
1186 | # where File::Find can be expected to work |
1187 | $File::Find::current_dir = File::Spec->curdir || '.'; |
1188 | |
81793b90 |
1189 | $File::Find::dont_use_nlink = 1 |
497711e7 |
1190 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
94c67634 |
1191 | $^O eq 'cygwin' || $^O eq 'epoc'; |
6280b799 |
1192 | |
20408e3c |
1193 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1194 | # report the number of links in a directory as an indication |
1195 | # of the number of files. |
1196 | # See, e.g. hints/machten.sh for MachTen 2.2. |
81793b90 |
1197 | unless ($File::Find::dont_use_nlink) { |
1198 | require Config; |
1199 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); |
20408e3c |
1200 | } |
1201 | |
7e47e6ff |
1202 | # We need a function that checks if a scalar is tainted. Either use the |
1203 | # Scalar::Util module's tainted() function or our (slower) pure Perl |
1204 | # fallback is_tainted_pp() |
1205 | { |
1206 | local $@; |
1207 | eval { require Scalar::Util }; |
1208 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; |
1209 | } |
1210 | |
a0d0e21e |
1211 | 1; |