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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 | # |
11 | # Modified to ensure sub-directory traversal order is not inverded by stack |
12 | # push and pops. That is remains in the same order as in the directory file, |
13 | # or user pre-processing (EG:sorted). |
14 | # |
15 | |
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16 | =head1 NAME |
17 | |
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18 | File::Find - Traverse a directory tree. |
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19 | |
20 | =head1 SYNOPSIS |
21 | |
22 | use File::Find; |
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23 | find(\&wanted, @directories_to_search); |
f06db76b |
24 | sub wanted { ... } |
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25 | |
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26 | use File::Find; |
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27 | finddepth(\&wanted, @directories_to_search); |
f06db76b |
28 | sub wanted { ... } |
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29 | |
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30 | use File::Find; |
31 | find({ wanted => \&process, follow => 1 }, '.'); |
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32 | |
33 | =head1 DESCRIPTION |
34 | |
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35 | These are functions for searching through directory trees doing work |
36 | on each file found similar to the Unix I<find> command. File::Find |
37 | exports two functions, C<find> and C<finddepth>. They work similarly |
38 | but have subtle differences. |
39 | |
40 | =over 4 |
41 | |
42 | =item B<find> |
43 | |
44 | find(\&wanted, @directories); |
45 | find(\%options, @directories); |
46 | |
47 | find() does a breadth-first search over the given @directories in the |
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48 | order they are given. In essence, it works from the top down. |
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49 | |
50 | For each file or directory found the &wanted subroutine is called (see |
51 | below for details). Additionally, for each directory found it will go |
52 | into that directory and continue the search. |
53 | |
54 | =item B<finddepth> |
55 | |
56 | finddepth(\&wanted, @directories); |
57 | finddepth(\%options, @directories); |
58 | |
59 | finddepth() works just like find() except it does a depth-first search. |
60 | It works from the bottom of the directory tree up. |
61 | |
62 | =back |
63 | |
64 | =head2 %options |
65 | |
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66 | The first argument to find() is either a hash reference describing the |
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67 | operations to be performed for each file, or a code reference. The |
68 | code reference is described in L<The wanted function> below. |
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69 | |
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70 | Here are the possible keys for the hash: |
71 | |
72 | =over 3 |
73 | |
74 | =item C<wanted> |
75 | |
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76 | The value should be a code reference. This code reference is |
77 | described in L<The wanted function> below. |
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78 | |
79 | =item C<bydepth> |
80 | |
81 | Reports the name of a directory only AFTER all its entries |
82 | have been reported. Entry point finddepth() is a shortcut for |
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83 | specifying C<{ bydepth =E<gt> 1 }> in the first argument of find(). |
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84 | |
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85 | =item C<preprocess> |
86 | |
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87 | The value should be a code reference. This code reference is used to |
88 | preprocess the current directory. The name of currently processed |
89 | directory is in $File::Find::dir. Your preprocessing function is |
90 | called after readdir() but before the loop that calls the wanted() |
91 | function. It is called with a list of strings (actually file/directory |
92 | names) and is expected to return a list of strings. The code can be |
93 | used to sort the file/directory names alphabetically, numerically, |
94 | or to filter out directory entries based on their name alone. When |
95 | I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. |
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96 | |
97 | =item C<postprocess> |
98 | |
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99 | The value should be a code reference. It is invoked just before leaving |
100 | the currently processed directory. It is called in void context with no |
101 | arguments. The name of the current directory is in $File::Find::dir. This |
102 | hook is handy for summarizing a directory, such as calculating its disk |
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103 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
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104 | no-op. |
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105 | |
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106 | =item C<follow> |
107 | |
108 | Causes symbolic links to be followed. Since directory trees with symbolic |
109 | links (followed) may contain files more than once and may even have |
110 | cycles, a hash has to be built up with an entry for each file. |
111 | This might be expensive both in space and time for a large |
112 | directory tree. See I<follow_fast> and I<follow_skip> below. |
113 | If either I<follow> or I<follow_fast> is in effect: |
114 | |
115 | =over 6 |
116 | |
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117 | =item * |
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118 | |
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119 | It is guaranteed that an I<lstat> has been called before the user's |
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120 | I<wanted()> function is called. This enables fast file checks involving S< _>. |
121 | |
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122 | =item * |
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123 | |
124 | There is a variable C<$File::Find::fullname> which holds the absolute |
125 | pathname of the file with all symbolic links resolved |
126 | |
127 | =back |
128 | |
129 | =item C<follow_fast> |
130 | |
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131 | This is similar to I<follow> except that it may report some files more |
132 | than once. It does detect cycles, however. Since only symbolic links |
133 | have to be hashed, this is much cheaper both in space and time. If |
134 | processing a file more than once (by the user's I<wanted()> function) |
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135 | is worse than just taking time, the option I<follow> should be used. |
136 | |
137 | =item C<follow_skip> |
138 | |
139 | C<follow_skip==1>, which is the default, causes all files which are |
140 | neither directories nor symbolic links to be ignored if they are about |
141 | to be processed a second time. If a directory or a symbolic link |
142 | are about to be processed a second time, File::Find dies. |
143 | C<follow_skip==0> causes File::Find to die if any file is about to be |
144 | processed a second time. |
145 | C<follow_skip==2> causes File::Find to ignore any duplicate files and |
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146 | directories but to proceed normally otherwise. |
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147 | |
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148 | =item C<dangling_symlinks> |
149 | |
150 | If true and a code reference, will be called with the symbolic link |
151 | name and the directory it lives in as arguments. Otherwise, if true |
152 | and warnings are on, warning "symbolic_link_name is a dangling |
153 | symbolic link\n" will be issued. If false, the dangling symbolic link |
154 | will be silently ignored. |
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155 | |
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156 | =item C<no_chdir> |
157 | |
158 | Does not C<chdir()> to each directory as it recurses. The wanted() |
159 | function will need to be aware of this, of course. In this case, |
160 | C<$_> will be the same as C<$File::Find::name>. |
161 | |
162 | =item C<untaint> |
163 | |
164 | If find is used in taint-mode (-T command line switch or if EUID != UID |
165 | or if EGID != GID) then internally directory names have to be untainted |
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166 | before they can be chdir'ed to. Therefore they are checked against a regular |
167 | expression I<untaint_pattern>. Note that all names passed to the user's |
168 | I<wanted()> function are still tainted. If this option is used while |
169 | not in taint-mode, C<untaint> is a no-op. |
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170 | |
171 | =item C<untaint_pattern> |
172 | |
173 | See above. This should be set using the C<qr> quoting operator. |
174 | The default is set to C<qr|^([-+@\w./]+)$|>. |
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175 | Note that the parentheses are vital. |
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176 | |
177 | =item C<untaint_skip> |
178 | |
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179 | If set, a directory which fails the I<untaint_pattern> is skipped, |
180 | including all its sub-directories. The default is to 'die' in such a case. |
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181 | |
182 | =back |
183 | |
abfdd623 |
184 | =head2 The wanted function |
185 | |
186 | The wanted() function does whatever verifications you want on each |
187 | file and directory. It takes no arguments but rather does its work |
188 | through a collection of variables. |
189 | |
190 | =over 4 |
191 | |
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192 | =item C<$File::Find::dir> is the current directory name, |
abfdd623 |
193 | |
194 | =item C<$_> is the current filename within that directory |
195 | |
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196 | =item C<$File::Find::name> is the complete pathname to the file. |
abfdd623 |
197 | |
198 | =back |
199 | |
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200 | Don't modify these variables. |
201 | |
abfdd623 |
202 | For example, when examining the file /some/path/foo.ext you will have: |
203 | |
204 | $File::Find::dir = /some/path/ |
205 | $_ = foo.ext |
206 | $File::Find::name = /some/path/foo.ext |
207 | |
208 | You are chdir()'d toC<$File::Find::dir> when the function is called, |
209 | unless C<no_chdir> was specified. Note that when changing to |
210 | directories is in effect the root directory (F</>) is a somewhat |
211 | special case inasmuch as the concatenation of C<$File::Find::dir>, |
212 | C<'/'> and C<$_> is not literally equal to C<$File::Find::name>. The |
213 | table below summarizes all variants: |
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214 | |
215 | $File::Find::name $File::Find::dir $_ |
216 | default / / . |
217 | no_chdir=>0 /etc / etc |
218 | /etc/x /etc x |
abfdd623 |
219 | |
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220 | no_chdir=>1 / / / |
221 | /etc / /etc |
222 | /etc/x /etc /etc/x |
223 | |
224 | |
225 | When <follow> or <follow_fast> are in effect, there is |
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226 | also a C<$File::Find::fullname>. The function may set |
227 | C<$File::Find::prune> to prune the tree unless C<bydepth> was |
228 | specified. Unless C<follow> or C<follow_fast> is specified, for |
229 | compatibility reasons (find.pl, find2perl) there are in addition the |
230 | following globals available: C<$File::Find::topdir>, |
231 | C<$File::Find::topdev>, C<$File::Find::topino>, |
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232 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
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233 | |
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234 | This library is useful for the C<find2perl> tool, which when fed, |
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235 | |
236 | find2perl / -name .nfs\* -mtime +7 \ |
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237 | -exec rm -f {} \; -o -fstype nfs -prune |
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238 | |
239 | produces something like: |
240 | |
241 | sub wanted { |
c7b9dd21 |
242 | /^\.nfs.*\z/s && |
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243 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
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244 | int(-M _) > 7 && |
245 | unlink($_) |
246 | || |
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247 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
f06db76b |
248 | $dev < 0 && |
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249 | ($File::Find::prune = 1); |
f06db76b |
250 | } |
251 | |
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252 | Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical |
253 | filehandle that caches the information from the preceding |
254 | stat(), lstat(), or filetest. |
255 | |
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256 | Here's another interesting wanted function. It will find all symbolic |
257 | links that don't resolve: |
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258 | |
259 | sub wanted { |
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260 | -l && !-e && print "bogus link: $File::Find::name\n"; |
237437d0 |
261 | } |
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262 | |
81793b90 |
263 | See also the script C<pfind> on CPAN for a nice application of this |
264 | module. |
265 | |
cd68ec93 |
266 | =head1 WARNINGS |
267 | |
268 | If you run your program with the C<-w> switch, or if you use the |
269 | C<warnings> pragma, File::Find will report warnings for several weird |
270 | situations. You can disable these warnings by putting the statement |
271 | |
272 | no warnings 'File::Find'; |
273 | |
274 | in the appropriate scope. See L<perllexwarn> for more info about lexical |
275 | warnings. |
276 | |
81793b90 |
277 | =head1 CAVEAT |
278 | |
5fa2bf2b |
279 | =over 2 |
280 | |
281 | =item $dont_use_nlink |
282 | |
283 | You can set the variable C<$File::Find::dont_use_nlink> to 1, if you want to |
6cf3b067 |
284 | force File::Find to always stat directories. This was used for file systems |
285 | that do not have an C<nlink> count matching the number of sub-directories. |
286 | Examples are ISO-9660 (CD-ROM), AFS, HPFS (OS/2 file system), FAT (DOS file |
287 | system) and a couple of others. |
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288 | |
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289 | You shouldn't need to set this variable, since File::Find should now detect |
290 | such file systems on-the-fly and switch itself to using stat. This works even |
291 | for parts of your file system, like a mounted CD-ROM. |
5fa2bf2b |
292 | |
6cf3b067 |
293 | If you do set C<$File::Find::dont_use_nlink> to 1, you will notice slow-downs. |
5fa2bf2b |
294 | |
295 | =item symlinks |
296 | |
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297 | Be aware that the option to follow symbolic links can be dangerous. |
81793b90 |
298 | Depending on the structure of the directory tree (including symbolic |
299 | links to directories) you might traverse a given (physical) directory |
300 | more than once (only if C<follow_fast> is in effect). |
301 | Furthermore, deleting or changing files in a symbolically linked directory |
302 | might cause very unpleasant surprises, since you delete or change files |
303 | in an unknown directory. |
0530a6c4 |
304 | |
5fa2bf2b |
305 | =back |
306 | |
7e47e6ff |
307 | =head1 NOTES |
308 | |
309 | =over 4 |
310 | |
311 | =item * |
312 | |
313 | Mac OS (Classic) users should note a few differences: |
314 | |
315 | =over 4 |
316 | |
317 | =item * |
318 | |
319 | The path separator is ':', not '/', and the current directory is denoted |
320 | as ':', not '.'. You should be careful about specifying relative pathnames. |
321 | While a full path always begins with a volume name, a relative pathname |
322 | should always begin with a ':'. If specifying a volume name only, a |
323 | trailing ':' is required. |
324 | |
325 | =item * |
326 | |
327 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> |
328 | contains the name of a directory, that name may or may not end with a |
329 | ':'. Likewise, C<$File::Find::name>, which contains the complete |
330 | pathname to that directory, and C<$File::Find::fullname>, which holds |
331 | the absolute pathname of that directory with all symbolic links resolved, |
332 | may or may not end with a ':'. |
333 | |
334 | =item * |
335 | |
336 | The default C<untaint_pattern> (see above) on Mac OS is set to |
337 | C<qr|^(.+)$|>. Note that the parentheses are vital. |
338 | |
339 | =item * |
340 | |
341 | The invisible system file "Icon\015" is ignored. While this file may |
342 | appear in every directory, there are some more invisible system files |
343 | on every volume, which are all located at the volume root level (i.e. |
344 | "MacintoshHD:"). These system files are B<not> excluded automatically. |
345 | Your filter may use the following code to recognize invisible files or |
346 | directories (requires Mac::Files): |
347 | |
348 | use Mac::Files; |
349 | |
350 | # invisible() -- returns 1 if file/directory is invisible, |
1cffc1dd |
351 | # 0 if it's visible or undef if an error occurred |
7e47e6ff |
352 | |
353 | sub invisible($) { |
354 | my $file = shift; |
355 | my ($fileCat, $fileInfo); |
356 | my $invisible_flag = 1 << 14; |
357 | |
358 | if ( $fileCat = FSpGetCatInfo($file) ) { |
359 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { |
360 | return (($fileInfo->fdFlags & $invisible_flag) && 1); |
361 | } |
362 | } |
363 | return undef; |
364 | } |
365 | |
366 | Generally, invisible files are system files, unless an odd application |
367 | decides to use invisible files for its own purposes. To distinguish |
368 | such files from system files, you have to look at the B<type> and B<creator> |
369 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and |
370 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes |
371 | (see MacPerl.pm for details). |
372 | |
373 | Files that appear on the desktop actually reside in an (hidden) directory |
374 | named "Desktop Folder" on the particular disk volume. Note that, although |
375 | all desktop files appear to be on the same "virtual" desktop, each disk |
376 | volume actually maintains its own "Desktop Folder" directory. |
377 | |
378 | =back |
379 | |
380 | =back |
0530a6c4 |
381 | |
a85af077 |
382 | =head1 HISTORY |
383 | |
384 | File::Find used to produce incorrect results if called recursively. |
385 | During the development of perl 5.8 this bug was fixed. |
386 | The first fixed version of File::Find was 1.01. |
387 | |
f06db76b |
388 | =cut |
389 | |
b75c8c73 |
390 | our @ISA = qw(Exporter); |
391 | our @EXPORT = qw(find finddepth); |
6280b799 |
392 | |
a0d0e21e |
393 | |
81793b90 |
394 | use strict; |
395 | my $Is_VMS; |
7e47e6ff |
396 | my $Is_MacOS; |
81793b90 |
397 | |
398 | require File::Basename; |
7e47e6ff |
399 | require File::Spec; |
81793b90 |
400 | |
9f826d6a |
401 | # Should ideally be my() not our() but local() currently |
402 | # refuses to operate on lexicals |
403 | |
404 | our %SLnkSeen; |
405 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
719c805e |
406 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
407 | $pre_process, $post_process, $dangling_symlinks); |
81793b90 |
408 | |
409 | sub contract_name { |
410 | my ($cdir,$fn) = @_; |
411 | |
7e47e6ff |
412 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
81793b90 |
413 | |
414 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); |
415 | |
416 | $fn =~ s|^\./||; |
417 | |
418 | my $abs_name= $cdir . $fn; |
419 | |
420 | if (substr($fn,0,3) eq '../') { |
fecbda2b |
421 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
81793b90 |
422 | } |
423 | |
424 | return $abs_name; |
425 | } |
426 | |
7e47e6ff |
427 | # return the absolute name of a directory or file |
428 | sub contract_name_Mac { |
429 | my ($cdir,$fn) = @_; |
430 | my $abs_name; |
431 | |
432 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' |
433 | |
434 | my $colon_count = length ($1); |
435 | if ($colon_count == 1) { |
436 | $abs_name = $cdir . $2; |
437 | return $abs_name; |
438 | } |
439 | else { |
440 | # need to move up the tree, but |
441 | # only if it's not a volume name |
442 | for (my $i=1; $i<$colon_count; $i++) { |
443 | unless ($cdir =~ /^[^:]+:$/) { # volume name |
444 | $cdir =~ s/[^:]+:$//; |
445 | } |
446 | else { |
447 | return undef; |
448 | } |
449 | } |
450 | $abs_name = $cdir . $2; |
451 | return $abs_name; |
452 | } |
453 | |
454 | } |
455 | else { |
456 | |
457 | # $fn may be a valid path to a directory or file or (dangling) |
458 | # symlink, without a leading ':' |
459 | if ( (-e $fn) || (-l $fn) ) { |
460 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* |
461 | return $fn; # $fn is already an absolute path |
462 | } |
463 | else { |
464 | $abs_name = $cdir . $fn; |
465 | return $abs_name; |
466 | } |
467 | } |
468 | else { # argh!, $fn is not a valid directory/file |
469 | return undef; |
470 | } |
471 | } |
472 | } |
81793b90 |
473 | |
474 | sub PathCombine($$) { |
475 | my ($Base,$Name) = @_; |
476 | my $AbsName; |
477 | |
7e47e6ff |
478 | if ($Is_MacOS) { |
479 | # $Name is the resolved symlink (always a full path on MacOS), |
480 | # i.e. there's no need to call contract_name_Mac() |
481 | $AbsName = $Name; |
482 | |
483 | # (simple) check for recursion |
484 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion |
485 | return undef; |
486 | } |
81793b90 |
487 | } |
488 | else { |
7e47e6ff |
489 | if (substr($Name,0,1) eq '/') { |
490 | $AbsName= $Name; |
491 | } |
492 | else { |
493 | $AbsName= contract_name($Base,$Name); |
494 | } |
81793b90 |
495 | |
7e47e6ff |
496 | # (simple) check for recursion |
497 | my $newlen= length($AbsName); |
498 | if ($newlen <= length($Base)) { |
499 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') |
500 | && $AbsName eq substr($Base,0,$newlen)) |
501 | { |
502 | return undef; |
503 | } |
81793b90 |
504 | } |
505 | } |
506 | return $AbsName; |
507 | } |
508 | |
509 | sub Follow_SymLink($) { |
510 | my ($AbsName) = @_; |
511 | |
512 | my ($NewName,$DEV, $INO); |
513 | ($DEV, $INO)= lstat $AbsName; |
514 | |
515 | while (-l _) { |
516 | if ($SLnkSeen{$DEV, $INO}++) { |
517 | if ($follow_skip < 2) { |
518 | die "$AbsName is encountered a second time"; |
a0d0e21e |
519 | } |
520 | else { |
81793b90 |
521 | return undef; |
a0d0e21e |
522 | } |
523 | } |
81793b90 |
524 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
525 | unless(defined $NewName) { |
526 | if ($follow_skip < 2) { |
527 | die "$AbsName is a recursive symbolic link"; |
528 | } |
529 | else { |
530 | return undef; |
a0d0e21e |
531 | } |
81793b90 |
532 | } |
533 | else { |
534 | $AbsName= $NewName; |
535 | } |
536 | ($DEV, $INO) = lstat($AbsName); |
537 | return undef unless defined $DEV; # dangling symbolic link |
538 | } |
539 | |
cd68ec93 |
540 | if ($full_check && defined $DEV && $SLnkSeen{$DEV, $INO}++) { |
7e47e6ff |
541 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
81793b90 |
542 | die "$AbsName encountered a second time"; |
543 | } |
544 | else { |
545 | return undef; |
546 | } |
547 | } |
548 | |
549 | return $AbsName; |
550 | } |
551 | |
17f410f9 |
552 | our($dir, $name, $fullname, $prune); |
81793b90 |
553 | sub _find_dir_symlnk($$$); |
554 | sub _find_dir($$$); |
555 | |
7e47e6ff |
556 | # check whether or not a scalar variable is tainted |
557 | # (code straight from the Camel, 3rd ed., page 561) |
558 | sub is_tainted_pp { |
559 | my $arg = shift; |
560 | my $nada = substr($arg, 0, 0); # zero-length |
561 | local $@; |
562 | eval { eval "# $nada" }; |
563 | return length($@) != 0; |
564 | } |
565 | |
81793b90 |
566 | sub _find_opt { |
567 | my $wanted = shift; |
568 | die "invalid top directory" unless defined $_[0]; |
569 | |
9f826d6a |
570 | # This function must local()ize everything because callbacks may |
571 | # call find() or finddepth() |
572 | |
573 | local %SLnkSeen; |
574 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
575 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
576 | $pre_process, $post_process, $dangling_symlinks); |
17ab9c14 |
577 | local($dir, $name, $fullname, $prune, $_); |
9f826d6a |
578 | |
a0c9c202 |
579 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::getcwd(); |
80e52b73 |
580 | my $cwd_untainted = $cwd; |
581 | my $check_t_cwd = 1; |
582 | $wanted_callback = $wanted->{wanted}; |
583 | $bydepth = $wanted->{bydepth}; |
584 | $pre_process = $wanted->{preprocess}; |
585 | $post_process = $wanted->{postprocess}; |
586 | $no_chdir = $wanted->{no_chdir}; |
587 | $full_check = $wanted->{follow}; |
588 | $follow = $full_check || $wanted->{follow_fast}; |
589 | $follow_skip = $wanted->{follow_skip}; |
590 | $untaint = $wanted->{untaint}; |
591 | $untaint_pat = $wanted->{untaint_pattern}; |
592 | $untaint_skip = $wanted->{untaint_skip}; |
593 | $dangling_symlinks = $wanted->{dangling_symlinks}; |
81793b90 |
594 | |
1cffc1dd |
595 | # for compatibility reasons (find.pl, find2perl) |
9f826d6a |
596 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 |
597 | |
598 | # a symbolic link to a directory doesn't increase the link count |
599 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; |
600 | |
e7b91b67 |
601 | my ($abs_dir, $Is_Dir); |
81793b90 |
602 | |
603 | Proc_Top_Item: |
604 | foreach my $TOP (@_) { |
7e47e6ff |
605 | my $top_item = $TOP; |
606 | |
607 | if ($Is_MacOS) { |
608 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
609 | $top_item = ":$top_item" |
3fa6e24b |
610 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff |
611 | } |
612 | else { |
613 | $top_item =~ s|/\z|| unless $top_item eq '/'; |
614 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
615 | } |
616 | |
617 | $Is_Dir= 0; |
618 | |
619 | if ($follow) { |
620 | |
621 | if ($Is_MacOS) { |
622 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety |
623 | |
624 | if ($top_item eq $File::Find::current_dir) { |
625 | $abs_dir = $cwd; |
626 | } |
627 | else { |
628 | $abs_dir = contract_name_Mac($cwd, $top_item); |
629 | unless (defined $abs_dir) { |
cd68ec93 |
630 | warnings::warnif "Can't determine absolute path for $top_item (No such file or directory)\n"; |
7e47e6ff |
631 | next Proc_Top_Item; |
632 | } |
633 | } |
634 | |
635 | } |
636 | else { |
637 | if (substr($top_item,0,1) eq '/') { |
638 | $abs_dir = $top_item; |
639 | } |
640 | elsif ($top_item eq $File::Find::current_dir) { |
641 | $abs_dir = $cwd; |
642 | } |
643 | else { # care about any ../ |
644 | $abs_dir = contract_name("$cwd/",$top_item); |
645 | } |
646 | } |
647 | $abs_dir= Follow_SymLink($abs_dir); |
648 | unless (defined $abs_dir) { |
80e52b73 |
649 | if ($dangling_symlinks) { |
650 | if (ref $dangling_symlinks eq 'CODE') { |
651 | $dangling_symlinks->($top_item, $cwd); |
652 | } else { |
cd68ec93 |
653 | warnings::warnif "$top_item is a dangling symbolic link\n"; |
80e52b73 |
654 | } |
655 | } |
81793b90 |
656 | next Proc_Top_Item; |
7e47e6ff |
657 | } |
658 | |
659 | if (-d _) { |
81793b90 |
660 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
661 | $Is_Dir= 1; |
7e47e6ff |
662 | } |
663 | } |
81793b90 |
664 | else { # no follow |
7e47e6ff |
665 | $topdir = $top_item; |
666 | unless (defined $topnlink) { |
cd68ec93 |
667 | warnings::warnif "Can't stat $top_item: $!\n"; |
7e47e6ff |
668 | next Proc_Top_Item; |
669 | } |
670 | if (-d _) { |
544ff7a7 |
671 | $top_item =~ s/\.dir\z//i if $Is_VMS; |
e7b91b67 |
672 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 |
673 | $Is_Dir= 1; |
7e47e6ff |
674 | } |
237437d0 |
675 | else { |
81793b90 |
676 | $abs_dir= $top_item; |
7e47e6ff |
677 | } |
678 | } |
81793b90 |
679 | |
7e47e6ff |
680 | unless ($Is_Dir) { |
81793b90 |
681 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff |
682 | if ($Is_MacOS) { |
683 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ |
684 | } |
685 | else { |
686 | ($dir,$_) = ('./', $top_item); |
687 | } |
81793b90 |
688 | } |
689 | |
7e47e6ff |
690 | $abs_dir = $dir; |
691 | if (( $untaint ) && (is_tainted($dir) )) { |
692 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; |
81793b90 |
693 | unless (defined $abs_dir) { |
694 | if ($untaint_skip == 0) { |
7e47e6ff |
695 | die "directory $dir is still tainted"; |
81793b90 |
696 | } |
697 | else { |
698 | next Proc_Top_Item; |
699 | } |
700 | } |
7e47e6ff |
701 | } |
81793b90 |
702 | |
7e47e6ff |
703 | unless ($no_chdir || chdir $abs_dir) { |
cd68ec93 |
704 | warnings::warnif "Couldn't chdir $abs_dir: $!\n"; |
7e47e6ff |
705 | next Proc_Top_Item; |
706 | } |
719911cc |
707 | |
7e47e6ff |
708 | $name = $abs_dir . $_; # $File::Find::name |
3bb6d3e5 |
709 | $_ = $name if $no_chdir; |
719911cc |
710 | |
abfdd623 |
711 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
712 | |
7e47e6ff |
713 | } |
81793b90 |
714 | |
7e47e6ff |
715 | unless ( $no_chdir ) { |
716 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { |
717 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; |
718 | unless (defined $cwd_untainted) { |
719 | die "insecure cwd in find(depth)"; |
720 | } |
721 | $check_t_cwd = 0; |
722 | } |
723 | unless (chdir $cwd_untainted) { |
724 | die "Can't cd to $cwd: $!\n"; |
725 | } |
726 | } |
81793b90 |
727 | } |
728 | } |
729 | |
730 | # API: |
731 | # $wanted |
732 | # $p_dir : "parent directory" |
733 | # $nlink : what came back from the stat |
734 | # preconditions: |
735 | # chdir (if not no_chdir) to dir |
736 | |
737 | sub _find_dir($$$) { |
738 | my ($wanted, $p_dir, $nlink) = @_; |
739 | my ($CdLvl,$Level) = (0,0); |
740 | my @Stack; |
741 | my @filenames; |
742 | my ($subcount,$sub_nlink); |
743 | my $SE= []; |
744 | my $dir_name= $p_dir; |
7e47e6ff |
745 | my $dir_pref; |
39e79f6b |
746 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
747 | my $tainted = 0; |
5fa2bf2b |
748 | my $no_nlink; |
7e47e6ff |
749 | |
750 | if ($Is_MacOS) { |
751 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface |
7e47e6ff |
752 | } |
753 | else { |
754 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
7e47e6ff |
755 | } |
81793b90 |
756 | |
757 | local ($dir, $name, $prune, *DIR); |
7e47e6ff |
758 | |
759 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { |
81793b90 |
760 | my $udir = $p_dir; |
7e47e6ff |
761 | if (( $untaint ) && (is_tainted($p_dir) )) { |
762 | ( $udir ) = $p_dir =~ m|$untaint_pat|; |
81793b90 |
763 | unless (defined $udir) { |
764 | if ($untaint_skip == 0) { |
765 | die "directory $p_dir is still tainted"; |
766 | } |
767 | else { |
768 | return; |
769 | } |
237437d0 |
770 | } |
a0d0e21e |
771 | } |
8d8eebbf |
772 | unless (chdir ($Is_VMS && $udir !~ /[\/\[<]+/ ? "./$udir" : $udir)) { |
cd68ec93 |
773 | warnings::warnif "Can't cd to $udir: $!\n"; |
81793b90 |
774 | return; |
775 | } |
776 | } |
7e47e6ff |
777 | |
778 | # push the starting directory |
57e73c4b |
779 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 |
780 | |
7e47e6ff |
781 | if ($Is_MacOS) { |
782 | $p_dir = $dir_pref; # ensure trailing ':' |
783 | } |
784 | |
81793b90 |
785 | while (defined $SE) { |
786 | unless ($bydepth) { |
7e47e6ff |
787 | $dir= $p_dir; # $File::Find::dir |
788 | $name= $dir_name; # $File::Find::name |
789 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
81793b90 |
790 | # prune may happen here |
7e47e6ff |
791 | $prune= 0; |
abfdd623 |
792 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
793 | next if $prune; |
81793b90 |
794 | } |
7e47e6ff |
795 | |
81793b90 |
796 | # change to that directory |
7e47e6ff |
797 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 |
798 | my $udir= $dir_rel; |
7e47e6ff |
799 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
800 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; |
81793b90 |
801 | unless (defined $udir) { |
802 | if ($untaint_skip == 0) { |
7e47e6ff |
803 | if ($Is_MacOS) { |
804 | die "directory ($p_dir) $dir_rel is still tainted"; |
805 | } |
806 | else { |
807 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; |
808 | } |
809 | } else { # $untaint_skip == 1 |
810 | next; |
81793b90 |
811 | } |
812 | } |
813 | } |
8d8eebbf |
814 | unless (chdir ($Is_VMS && $udir !~ /[\/\[<]+/ ? "./$udir" : $udir)) { |
7e47e6ff |
815 | if ($Is_MacOS) { |
cd68ec93 |
816 | warnings::warnif "Can't cd to ($p_dir) $udir: $!\n"; |
7e47e6ff |
817 | } |
818 | else { |
cd68ec93 |
819 | warnings::warnif "Can't cd to (" . |
820 | ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n"; |
7e47e6ff |
821 | } |
81793b90 |
822 | next; |
823 | } |
824 | $CdLvl++; |
825 | } |
826 | |
7e47e6ff |
827 | if ($Is_MacOS) { |
828 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
829 | } |
830 | |
831 | $dir= $dir_name; # $File::Find::dir |
81793b90 |
832 | |
833 | # Get the list of files in the current directory. |
7e47e6ff |
834 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
cd68ec93 |
835 | warnings::warnif "Can't opendir($dir_name): $!\n"; |
81793b90 |
836 | next; |
837 | } |
838 | @filenames = readdir DIR; |
839 | closedir(DIR); |
abfdd623 |
840 | @filenames = $pre_process->(@filenames) if $pre_process; |
719c805e |
841 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; |
81793b90 |
842 | |
5fa2bf2b |
843 | # default: use whatever was specifid |
844 | # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back) |
845 | $no_nlink = $avoid_nlink; |
846 | # if dir has wrong nlink count, force switch to slower stat method |
847 | $no_nlink = 1 if ($nlink < 2); |
848 | |
849 | if ($nlink == 2 && !$no_nlink) { |
81793b90 |
850 | # This dir has no subdirectories. |
851 | for my $FN (@filenames) { |
7e47e6ff |
852 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
853 | |
7e47e6ff |
854 | $name = $dir_pref . $FN; # $File::Find::name |
855 | $_ = ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
856 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
857 | } |
858 | |
859 | } |
860 | else { |
861 | # This dir has subdirectories. |
862 | $subcount = $nlink - 2; |
863 | |
7bd31527 |
864 | # HACK: insert directories at this position. so as to preserve |
865 | # the user pre-processed ordering of files. |
866 | # EG: directory traversal is in user sorted order, not at random. |
867 | my $stack_top = @Stack; |
868 | |
81793b90 |
869 | for my $FN (@filenames) { |
7e47e6ff |
870 | next if $FN =~ $File::Find::skip_pattern; |
5fa2bf2b |
871 | if ($subcount > 0 || $no_nlink) { |
81793b90 |
872 | # Seen all the subdirs? |
873 | # check for directoriness. |
874 | # stat is faster for a file in the current directory |
07867069 |
875 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 |
876 | |
877 | if (-d _) { |
878 | --$subcount; |
544ff7a7 |
879 | $FN =~ s/\.dir\z//i if $Is_VMS; |
7bd31527 |
880 | # HACK: replace push to preserve dir traversal order |
881 | #push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
882 | splice @Stack, $stack_top, 0, |
883 | [$CdLvl,$dir_name,$FN,$sub_nlink]; |
81793b90 |
884 | } |
885 | else { |
7e47e6ff |
886 | $name = $dir_pref . $FN; # $File::Find::name |
887 | $_= ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
888 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
889 | } |
890 | } |
07867069 |
891 | else { |
7e47e6ff |
892 | $name = $dir_pref . $FN; # $File::Find::name |
893 | $_= ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
894 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
895 | } |
896 | } |
897 | } |
17b275ff |
898 | } |
899 | continue { |
57e73c4b |
900 | while ( defined ($SE = pop @Stack) ) { |
81793b90 |
901 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
902 | if ($CdLvl > $Level && !$no_chdir) { |
7e47e6ff |
903 | my $tmp; |
904 | if ($Is_MacOS) { |
905 | $tmp = (':' x ($CdLvl-$Level)) . ':'; |
906 | } |
907 | else { |
908 | $tmp = join('/',('..') x ($CdLvl-$Level)); |
909 | } |
910 | die "Can't cd to $dir_name" . $tmp |
911 | unless chdir ($tmp); |
81793b90 |
912 | $CdLvl = $Level; |
913 | } |
7e47e6ff |
914 | |
915 | if ($Is_MacOS) { |
916 | # $pdir always has a trailing ':', except for the starting dir, |
917 | # where $dir_rel eq ':' |
918 | $dir_name = "$p_dir$dir_rel"; |
919 | $dir_pref = "$dir_name:"; |
920 | } |
921 | else { |
922 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
923 | $dir_pref = "$dir_name/"; |
924 | } |
925 | |
719c805e |
926 | if ( $nlink == -2 ) { |
7e47e6ff |
927 | $name = $dir = $p_dir; # $File::Find::name / dir |
39e79f6b |
928 | $_ = $File::Find::current_dir; |
abfdd623 |
929 | $post_process->(); # End-of-directory processing |
7e47e6ff |
930 | } |
931 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now |
932 | $name = $dir_name; |
933 | if ($Is_MacOS) { |
934 | if ($dir_rel eq ':') { # must be the top dir, where we started |
935 | $name =~ s|:$||; # $File::Find::name |
936 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
937 | } |
938 | $dir = $p_dir; # $File::Find::dir |
939 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
940 | } |
941 | else { |
942 | if ( substr($name,-2) eq '/.' ) { |
5cf0a2f2 |
943 | substr($name, length($name) == 2 ? -1 : -2) = ''; |
7e47e6ff |
944 | } |
945 | $dir = $p_dir; |
946 | $_ = ($no_chdir ? $dir_name : $dir_rel ); |
947 | if ( substr($_,-2) eq '/.' ) { |
5cf0a2f2 |
948 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
949 | } |
950 | } |
abfdd623 |
951 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
952 | } |
953 | else { |
954 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
955 | last; |
956 | } |
81793b90 |
957 | } |
a0d0e21e |
958 | } |
959 | } |
960 | |
81793b90 |
961 | |
962 | # API: |
963 | # $wanted |
964 | # $dir_loc : absolute location of a dir |
965 | # $p_dir : "parent directory" |
966 | # preconditions: |
967 | # chdir (if not no_chdir) to dir |
968 | |
969 | sub _find_dir_symlnk($$$) { |
7e47e6ff |
970 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 |
971 | my @Stack; |
972 | my @filenames; |
973 | my $new_loc; |
7e47e6ff |
974 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 |
975 | my $SE = []; |
976 | my $dir_name = $p_dir; |
7e47e6ff |
977 | my $dir_pref; |
978 | my $loc_pref; |
39e79f6b |
979 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
980 | my $byd_flag; # flag for pending stack entry if $bydepth |
981 | my $tainted = 0; |
982 | my $ok = 1; |
983 | |
984 | if ($Is_MacOS) { |
985 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; |
986 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; |
7e47e6ff |
987 | } else { |
988 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
989 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); |
7e47e6ff |
990 | } |
81793b90 |
991 | |
992 | local ($dir, $name, $fullname, $prune, *DIR); |
7e47e6ff |
993 | |
994 | unless ($no_chdir) { |
995 | # untaint the topdir |
996 | if (( $untaint ) && (is_tainted($dir_loc) )) { |
997 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted |
998 | # once untainted, $updir_loc is pushed on the stack (as parent directory); |
999 | # hence, we don't need to untaint the parent directory every time we chdir |
1000 | # to it later |
1001 | unless (defined $updir_loc) { |
81793b90 |
1002 | if ($untaint_skip == 0) { |
1003 | die "directory $dir_loc is still tainted"; |
1004 | } |
1005 | else { |
1006 | return; |
1007 | } |
1008 | } |
1009 | } |
7e47e6ff |
1010 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
1011 | unless ($ok) { |
cd68ec93 |
1012 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
1013 | return; |
1014 | } |
1015 | } |
1016 | |
7e47e6ff |
1017 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
1018 | |
1019 | if ($Is_MacOS) { |
1020 | $p_dir = $dir_pref; # ensure trailing ':' |
1021 | } |
57e73c4b |
1022 | |
81793b90 |
1023 | while (defined $SE) { |
1024 | |
1025 | unless ($bydepth) { |
7e47e6ff |
1026 | # change (back) to parent directory (always untainted) |
704ea872 |
1027 | unless ($no_chdir) { |
7e47e6ff |
1028 | unless (chdir $updir_loc) { |
cd68ec93 |
1029 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
704ea872 |
1030 | next; |
1031 | } |
1032 | } |
7e47e6ff |
1033 | $dir= $p_dir; # $File::Find::dir |
1034 | $name= $dir_name; # $File::Find::name |
1035 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
1036 | $fullname= $dir_loc; # $File::Find::fullname |
81793b90 |
1037 | # prune may happen here |
7e47e6ff |
1038 | $prune= 0; |
704ea872 |
1039 | lstat($_); # make sure file tests with '_' work |
abfdd623 |
1040 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
1041 | next if $prune; |
81793b90 |
1042 | } |
1043 | |
1044 | # change to that directory |
7e47e6ff |
1045 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1046 | $updir_loc = $dir_loc; |
1047 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { |
1048 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir |
1049 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; |
1050 | unless (defined $updir_loc) { |
81793b90 |
1051 | if ($untaint_skip == 0) { |
1052 | die "directory $dir_loc is still tainted"; |
a0d0e21e |
1053 | } |
237437d0 |
1054 | else { |
81793b90 |
1055 | next; |
237437d0 |
1056 | } |
a0d0e21e |
1057 | } |
1058 | } |
7e47e6ff |
1059 | unless (chdir $updir_loc) { |
cd68ec93 |
1060 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
1061 | next; |
1062 | } |
1063 | } |
1064 | |
7e47e6ff |
1065 | if ($Is_MacOS) { |
1066 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
1067 | } |
1068 | |
1069 | $dir = $dir_name; # $File::Find::dir |
81793b90 |
1070 | |
1071 | # Get the list of files in the current directory. |
7e47e6ff |
1072 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
cd68ec93 |
1073 | warnings::warnif "Can't opendir($dir_loc): $!\n"; |
81793b90 |
1074 | next; |
1075 | } |
1076 | @filenames = readdir DIR; |
1077 | closedir(DIR); |
1078 | |
1079 | for my $FN (@filenames) { |
7e47e6ff |
1080 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
1081 | |
1082 | # follow symbolic links / do an lstat |
07867069 |
1083 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 |
1084 | |
1085 | # ignore if invalid symlink |
1086 | next unless defined $new_loc; |
7e47e6ff |
1087 | |
81793b90 |
1088 | if (-d _) { |
7e47e6ff |
1089 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 |
1090 | } |
1091 | else { |
7e47e6ff |
1092 | $fullname = $new_loc; # $File::Find::fullname |
1093 | $name = $dir_pref . $FN; # $File::Find::name |
1094 | $_ = ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
1095 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
1096 | } |
1097 | } |
1098 | |
81793b90 |
1099 | } |
1100 | continue { |
57e73c4b |
1101 | while (defined($SE = pop @Stack)) { |
7e47e6ff |
1102 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
1103 | if ($Is_MacOS) { |
1104 | # $p_dir always has a trailing ':', except for the starting dir, |
1105 | # where $dir_rel eq ':' |
1106 | $dir_name = "$p_dir$dir_rel"; |
1107 | $dir_pref = "$dir_name:"; |
1108 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; |
1109 | } |
1110 | else { |
1111 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
1112 | $dir_pref = "$dir_name/"; |
1113 | $loc_pref = "$dir_loc/"; |
1114 | } |
1115 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now |
1116 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1117 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted |
cd68ec93 |
1118 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
7e47e6ff |
1119 | next; |
1120 | } |
1121 | } |
1122 | $fullname = $dir_loc; # $File::Find::fullname |
1123 | $name = $dir_name; # $File::Find::name |
1124 | if ($Is_MacOS) { |
1125 | if ($dir_rel eq ':') { # must be the top dir, where we started |
1126 | $name =~ s|:$||; # $File::Find::name |
1127 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
1128 | } |
1129 | $dir = $p_dir; # $File::Find::dir |
1130 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
1131 | } |
1132 | else { |
1133 | if ( substr($name,-2) eq '/.' ) { |
f801979b |
1134 | substr($name, length($name) == 2 ? -1 : -2) = ''; # $File::Find::name |
7e47e6ff |
1135 | } |
1136 | $dir = $p_dir; # $File::Find::dir |
1137 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ |
1138 | if ( substr($_,-2) eq '/.' ) { |
f801979b |
1139 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
1140 | } |
1141 | } |
1142 | |
1143 | lstat($_); # make sure file tests with '_' work |
abfdd623 |
1144 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
1145 | } |
1146 | else { |
1147 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; |
1148 | last; |
1149 | } |
a0d0e21e |
1150 | } |
1151 | } |
1152 | } |
1153 | |
81793b90 |
1154 | |
20408e3c |
1155 | sub wrap_wanted { |
81793b90 |
1156 | my $wanted = shift; |
1157 | if ( ref($wanted) eq 'HASH' ) { |
1158 | if ( $wanted->{follow} || $wanted->{follow_fast}) { |
1159 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; |
1160 | } |
1161 | if ( $wanted->{untaint} ) { |
7e47e6ff |
1162 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 |
1163 | unless defined $wanted->{untaint_pattern}; |
1164 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; |
1165 | } |
1166 | return $wanted; |
1167 | } |
1168 | else { |
1169 | return { wanted => $wanted }; |
1170 | } |
a0d0e21e |
1171 | } |
1172 | |
20408e3c |
1173 | sub find { |
81793b90 |
1174 | my $wanted = shift; |
1175 | _find_opt(wrap_wanted($wanted), @_); |
a0d0e21e |
1176 | } |
1177 | |
55d729e4 |
1178 | sub finddepth { |
81793b90 |
1179 | my $wanted = wrap_wanted(shift); |
1180 | $wanted->{bydepth} = 1; |
1181 | _find_opt($wanted, @_); |
20408e3c |
1182 | } |
6280b799 |
1183 | |
7e47e6ff |
1184 | # default |
1185 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; |
1186 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; |
1187 | |
6280b799 |
1188 | # These are hard-coded for now, but may move to hint files. |
10eba763 |
1189 | if ($^O eq 'VMS') { |
81793b90 |
1190 | $Is_VMS = 1; |
7e47e6ff |
1191 | $File::Find::dont_use_nlink = 1; |
1192 | } |
1193 | elsif ($^O eq 'MacOS') { |
1194 | $Is_MacOS = 1; |
1195 | $File::Find::dont_use_nlink = 1; |
1196 | $File::Find::skip_pattern = qr/^Icon\015\z/; |
1197 | $File::Find::untaint_pattern = qr|^(.+)$|; |
748a9306 |
1198 | } |
1199 | |
7e47e6ff |
1200 | # this _should_ work properly on all platforms |
1201 | # where File::Find can be expected to work |
1202 | $File::Find::current_dir = File::Spec->curdir || '.'; |
1203 | |
81793b90 |
1204 | $File::Find::dont_use_nlink = 1 |
497711e7 |
1205 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
1119cb72 |
1206 | $^O eq 'cygwin' || $^O eq 'epoc' || $^O eq 'qnx' || |
1207 | $^O eq 'nto'; |
6280b799 |
1208 | |
20408e3c |
1209 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1210 | # report the number of links in a directory as an indication |
1211 | # of the number of files. |
1212 | # See, e.g. hints/machten.sh for MachTen 2.2. |
81793b90 |
1213 | unless ($File::Find::dont_use_nlink) { |
1214 | require Config; |
1215 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); |
20408e3c |
1216 | } |
1217 | |
7e47e6ff |
1218 | # We need a function that checks if a scalar is tainted. Either use the |
1219 | # Scalar::Util module's tainted() function or our (slower) pure Perl |
1220 | # fallback is_tainted_pp() |
1221 | { |
1222 | local $@; |
1223 | eval { require Scalar::Util }; |
1224 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; |
1225 | } |
1226 | |
a0d0e21e |
1227 | 1; |