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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; |
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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 | |
12 | find - traverse a file tree |
13 | |
14 | finddepth - traverse a directory structure depth-first |
15 | |
16 | =head1 SYNOPSIS |
17 | |
18 | use File::Find; |
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19 | find(\&wanted, '/foo', '/bar'); |
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20 | sub wanted { ... } |
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21 | |
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22 | use File::Find; |
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23 | finddepth(\&wanted, '/foo', '/bar'); |
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24 | sub wanted { ... } |
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25 | |
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26 | use File::Find; |
27 | find({ wanted => \&process, follow => 1 }, '.'); |
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28 | |
29 | =head1 DESCRIPTION |
30 | |
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31 | The first argument to find() is either a hash reference describing the |
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32 | operations to be performed for each file, or a code reference. |
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33 | |
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34 | Here are the possible keys for the hash: |
35 | |
36 | =over 3 |
37 | |
38 | =item C<wanted> |
39 | |
40 | The value should be a code reference. This code reference is called |
41 | I<the wanted() function> below. |
42 | |
43 | =item C<bydepth> |
44 | |
45 | Reports the name of a directory only AFTER all its entries |
46 | have been reported. Entry point finddepth() is a shortcut for |
47 | specifying C<{ bydepth => 1 }> in the first argument of find(). |
48 | |
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49 | =item C<preprocess> |
50 | |
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51 | The value should be a code reference. This code reference is used to |
52 | preprocess the current directory. The name of currently processed |
53 | directory is in $File::Find::dir. Your preprocessing function is |
54 | called after readdir() but before the loop that calls the wanted() |
55 | function. It is called with a list of strings (actually file/directory |
56 | names) and is expected to return a list of strings. The code can be |
57 | used to sort the file/directory names alphabetically, numerically, |
58 | or to filter out directory entries based on their name alone. When |
59 | I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. |
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60 | |
61 | =item C<postprocess> |
62 | |
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63 | The value should be a code reference. It is invoked just before leaving |
64 | the currently processed directory. It is called in void context with no |
65 | arguments. The name of the current directory is in $File::Find::dir. This |
66 | hook is handy for summarizing a directory, such as calculating its disk |
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67 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
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68 | no-op. |
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69 | |
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70 | =item C<follow> |
71 | |
72 | Causes symbolic links to be followed. Since directory trees with symbolic |
73 | links (followed) may contain files more than once and may even have |
74 | cycles, a hash has to be built up with an entry for each file. |
75 | This might be expensive both in space and time for a large |
76 | directory tree. See I<follow_fast> and I<follow_skip> below. |
77 | If either I<follow> or I<follow_fast> is in effect: |
78 | |
79 | =over 6 |
80 | |
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81 | =item * |
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82 | |
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83 | It is guaranteed that an I<lstat> has been called before the user's |
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84 | I<wanted()> function is called. This enables fast file checks involving S< _>. |
85 | |
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86 | =item * |
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87 | |
88 | There is a variable C<$File::Find::fullname> which holds the absolute |
89 | pathname of the file with all symbolic links resolved |
90 | |
91 | =back |
92 | |
93 | =item C<follow_fast> |
94 | |
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95 | This is similar to I<follow> except that it may report some files more |
96 | than once. It does detect cycles, however. Since only symbolic links |
97 | have to be hashed, this is much cheaper both in space and time. If |
98 | processing a file more than once (by the user's I<wanted()> function) |
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99 | is worse than just taking time, the option I<follow> should be used. |
100 | |
101 | =item C<follow_skip> |
102 | |
103 | C<follow_skip==1>, which is the default, causes all files which are |
104 | neither directories nor symbolic links to be ignored if they are about |
105 | to be processed a second time. If a directory or a symbolic link |
106 | are about to be processed a second time, File::Find dies. |
107 | C<follow_skip==0> causes File::Find to die if any file is about to be |
108 | processed a second time. |
109 | C<follow_skip==2> causes File::Find to ignore any duplicate files and |
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110 | directories but to proceed normally otherwise. |
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111 | |
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112 | =item C<dangling_symlinks> |
113 | |
114 | If true and a code reference, will be called with the symbolic link |
115 | name and the directory it lives in as arguments. Otherwise, if true |
116 | and warnings are on, warning "symbolic_link_name is a dangling |
117 | symbolic link\n" will be issued. If false, the dangling symbolic link |
118 | will be silently ignored. |
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119 | |
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120 | =item C<no_chdir> |
121 | |
122 | Does not C<chdir()> to each directory as it recurses. The wanted() |
123 | function will need to be aware of this, of course. In this case, |
124 | C<$_> will be the same as C<$File::Find::name>. |
125 | |
126 | =item C<untaint> |
127 | |
128 | If find is used in taint-mode (-T command line switch or if EUID != UID |
129 | or if EGID != GID) then internally directory names have to be untainted |
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130 | before they can be chdir'ed to. Therefore they are checked against a regular |
131 | expression I<untaint_pattern>. Note that all names passed to the user's |
132 | I<wanted()> function are still tainted. If this option is used while |
133 | not in taint-mode, C<untaint> is a no-op. |
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134 | |
135 | =item C<untaint_pattern> |
136 | |
137 | See above. This should be set using the C<qr> quoting operator. |
138 | The default is set to C<qr|^([-+@\w./]+)$|>. |
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139 | Note that the parentheses are vital. |
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140 | |
141 | =item C<untaint_skip> |
142 | |
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143 | If set, a directory which fails the I<untaint_pattern> is skipped, |
144 | including all its sub-directories. The default is to 'die' in such a case. |
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145 | |
146 | =back |
147 | |
148 | The wanted() function does whatever verifications you want. |
149 | C<$File::Find::dir> contains the current directory name, and C<$_> the |
150 | current filename within that directory. C<$File::Find::name> contains |
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151 | the complete pathname to the file. You are chdir()'d to |
152 | C<$File::Find::dir> when the function is called, unless C<no_chdir> |
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153 | was specified. Note that when changing to directories is in effect |
154 | the root directory (F</>) is a somewhat special case inasmuch as the |
155 | concatenation of C<$File::Find::dir>, C<'/'> and C<$_> is not literally |
156 | equal to C<$File::Find::name>. The table below summarizes all variants: |
157 | |
158 | $File::Find::name $File::Find::dir $_ |
159 | default / / . |
160 | no_chdir=>0 /etc / etc |
161 | /etc/x /etc x |
162 | |
163 | no_chdir=>1 / / / |
164 | /etc / /etc |
165 | /etc/x /etc /etc/x |
166 | |
167 | |
168 | When <follow> or <follow_fast> are in effect, there is |
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169 | also a C<$File::Find::fullname>. The function may set |
170 | C<$File::Find::prune> to prune the tree unless C<bydepth> was |
171 | specified. Unless C<follow> or C<follow_fast> is specified, for |
172 | compatibility reasons (find.pl, find2perl) there are in addition the |
173 | following globals available: C<$File::Find::topdir>, |
174 | C<$File::Find::topdev>, C<$File::Find::topino>, |
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175 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
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176 | |
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177 | This library is useful for the C<find2perl> tool, which when fed, |
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178 | |
179 | find2perl / -name .nfs\* -mtime +7 \ |
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180 | -exec rm -f {} \; -o -fstype nfs -prune |
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181 | |
182 | produces something like: |
183 | |
184 | sub wanted { |
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185 | /^\.nfs.*\z/s && |
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186 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
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187 | int(-M _) > 7 && |
188 | unlink($_) |
189 | || |
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190 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
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191 | $dev < 0 && |
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192 | ($File::Find::prune = 1); |
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193 | } |
194 | |
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195 | Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical |
196 | filehandle that caches the information from the preceding |
197 | stat(), lstat(), or filetest. |
198 | |
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199 | Here's another interesting wanted function. It will find all symbolic |
200 | links that don't resolve: |
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201 | |
202 | sub wanted { |
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203 | -l && !-e && print "bogus link: $File::Find::name\n"; |
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204 | } |
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205 | |
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206 | See also the script C<pfind> on CPAN for a nice application of this |
207 | module. |
208 | |
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209 | =head1 WARNINGS |
210 | |
211 | If you run your program with the C<-w> switch, or if you use the |
212 | C<warnings> pragma, File::Find will report warnings for several weird |
213 | situations. You can disable these warnings by putting the statement |
214 | |
215 | no warnings 'File::Find'; |
216 | |
217 | in the appropriate scope. See L<perllexwarn> for more info about lexical |
218 | warnings. |
219 | |
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220 | =head1 CAVEAT |
221 | |
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222 | =over 2 |
223 | |
224 | =item $dont_use_nlink |
225 | |
226 | You can set the variable C<$File::Find::dont_use_nlink> to 1, if you want to |
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227 | force File::Find to always stat directories. This was used for file systems |
228 | that do not have an C<nlink> count matching the number of sub-directories. |
229 | Examples are ISO-9660 (CD-ROM), AFS, HPFS (OS/2 file system), FAT (DOS file |
230 | system) and a couple of others. |
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231 | |
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232 | You shouldn't need to set this variable, since File::Find should now detect |
233 | such file systems on-the-fly and switch itself to using stat. This works even |
234 | for parts of your file system, like a mounted CD-ROM. |
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235 | |
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236 | If you do set C<$File::Find::dont_use_nlink> to 1, you will notice slow-downs. |
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237 | |
238 | =item symlinks |
239 | |
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240 | Be aware that the option to follow symbolic links can be dangerous. |
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241 | Depending on the structure of the directory tree (including symbolic |
242 | links to directories) you might traverse a given (physical) directory |
243 | more than once (only if C<follow_fast> is in effect). |
244 | Furthermore, deleting or changing files in a symbolically linked directory |
245 | might cause very unpleasant surprises, since you delete or change files |
246 | in an unknown directory. |
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247 | |
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248 | =back |
249 | |
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250 | =head1 NOTES |
251 | |
252 | =over 4 |
253 | |
254 | =item * |
255 | |
256 | Mac OS (Classic) users should note a few differences: |
257 | |
258 | =over 4 |
259 | |
260 | =item * |
261 | |
262 | The path separator is ':', not '/', and the current directory is denoted |
263 | as ':', not '.'. You should be careful about specifying relative pathnames. |
264 | While a full path always begins with a volume name, a relative pathname |
265 | should always begin with a ':'. If specifying a volume name only, a |
266 | trailing ':' is required. |
267 | |
268 | =item * |
269 | |
270 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> |
271 | contains the name of a directory, that name may or may not end with a |
272 | ':'. Likewise, C<$File::Find::name>, which contains the complete |
273 | pathname to that directory, and C<$File::Find::fullname>, which holds |
274 | the absolute pathname of that directory with all symbolic links resolved, |
275 | may or may not end with a ':'. |
276 | |
277 | =item * |
278 | |
279 | The default C<untaint_pattern> (see above) on Mac OS is set to |
280 | C<qr|^(.+)$|>. Note that the parentheses are vital. |
281 | |
282 | =item * |
283 | |
284 | The invisible system file "Icon\015" is ignored. While this file may |
285 | appear in every directory, there are some more invisible system files |
286 | on every volume, which are all located at the volume root level (i.e. |
287 | "MacintoshHD:"). These system files are B<not> excluded automatically. |
288 | Your filter may use the following code to recognize invisible files or |
289 | directories (requires Mac::Files): |
290 | |
291 | use Mac::Files; |
292 | |
293 | # invisible() -- returns 1 if file/directory is invisible, |
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294 | # 0 if it's visible or undef if an error occurred |
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295 | |
296 | sub invisible($) { |
297 | my $file = shift; |
298 | my ($fileCat, $fileInfo); |
299 | my $invisible_flag = 1 << 14; |
300 | |
301 | if ( $fileCat = FSpGetCatInfo($file) ) { |
302 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { |
303 | return (($fileInfo->fdFlags & $invisible_flag) && 1); |
304 | } |
305 | } |
306 | return undef; |
307 | } |
308 | |
309 | Generally, invisible files are system files, unless an odd application |
310 | decides to use invisible files for its own purposes. To distinguish |
311 | such files from system files, you have to look at the B<type> and B<creator> |
312 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and |
313 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes |
314 | (see MacPerl.pm for details). |
315 | |
316 | Files that appear on the desktop actually reside in an (hidden) directory |
317 | named "Desktop Folder" on the particular disk volume. Note that, although |
318 | all desktop files appear to be on the same "virtual" desktop, each disk |
319 | volume actually maintains its own "Desktop Folder" directory. |
320 | |
321 | =back |
322 | |
323 | =back |
0530a6c4 |
324 | |
a85af077 |
325 | =head1 HISTORY |
326 | |
327 | File::Find used to produce incorrect results if called recursively. |
328 | During the development of perl 5.8 this bug was fixed. |
329 | The first fixed version of File::Find was 1.01. |
330 | |
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331 | =cut |
332 | |
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333 | our @ISA = qw(Exporter); |
334 | our @EXPORT = qw(find finddepth); |
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335 | |
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336 | |
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337 | use strict; |
338 | my $Is_VMS; |
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339 | my $Is_MacOS; |
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340 | |
341 | require File::Basename; |
7e47e6ff |
342 | require File::Spec; |
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343 | |
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344 | # Should ideally be my() not our() but local() currently |
345 | # refuses to operate on lexicals |
346 | |
347 | our %SLnkSeen; |
348 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
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349 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
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350 | $pre_process, $post_process, $dangling_symlinks); |
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351 | |
352 | sub contract_name { |
353 | my ($cdir,$fn) = @_; |
354 | |
7e47e6ff |
355 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
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356 | |
357 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); |
358 | |
359 | $fn =~ s|^\./||; |
360 | |
361 | my $abs_name= $cdir . $fn; |
362 | |
363 | if (substr($fn,0,3) eq '../') { |
fecbda2b |
364 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
81793b90 |
365 | } |
366 | |
367 | return $abs_name; |
368 | } |
369 | |
7e47e6ff |
370 | # return the absolute name of a directory or file |
371 | sub contract_name_Mac { |
372 | my ($cdir,$fn) = @_; |
373 | my $abs_name; |
374 | |
375 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' |
376 | |
377 | my $colon_count = length ($1); |
378 | if ($colon_count == 1) { |
379 | $abs_name = $cdir . $2; |
380 | return $abs_name; |
381 | } |
382 | else { |
383 | # need to move up the tree, but |
384 | # only if it's not a volume name |
385 | for (my $i=1; $i<$colon_count; $i++) { |
386 | unless ($cdir =~ /^[^:]+:$/) { # volume name |
387 | $cdir =~ s/[^:]+:$//; |
388 | } |
389 | else { |
390 | return undef; |
391 | } |
392 | } |
393 | $abs_name = $cdir . $2; |
394 | return $abs_name; |
395 | } |
396 | |
397 | } |
398 | else { |
399 | |
400 | # $fn may be a valid path to a directory or file or (dangling) |
401 | # symlink, without a leading ':' |
402 | if ( (-e $fn) || (-l $fn) ) { |
403 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* |
404 | return $fn; # $fn is already an absolute path |
405 | } |
406 | else { |
407 | $abs_name = $cdir . $fn; |
408 | return $abs_name; |
409 | } |
410 | } |
411 | else { # argh!, $fn is not a valid directory/file |
412 | return undef; |
413 | } |
414 | } |
415 | } |
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416 | |
417 | sub PathCombine($$) { |
418 | my ($Base,$Name) = @_; |
419 | my $AbsName; |
420 | |
7e47e6ff |
421 | if ($Is_MacOS) { |
422 | # $Name is the resolved symlink (always a full path on MacOS), |
423 | # i.e. there's no need to call contract_name_Mac() |
424 | $AbsName = $Name; |
425 | |
426 | # (simple) check for recursion |
427 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion |
428 | return undef; |
429 | } |
81793b90 |
430 | } |
431 | else { |
7e47e6ff |
432 | if (substr($Name,0,1) eq '/') { |
433 | $AbsName= $Name; |
434 | } |
435 | else { |
436 | $AbsName= contract_name($Base,$Name); |
437 | } |
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438 | |
7e47e6ff |
439 | # (simple) check for recursion |
440 | my $newlen= length($AbsName); |
441 | if ($newlen <= length($Base)) { |
442 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') |
443 | && $AbsName eq substr($Base,0,$newlen)) |
444 | { |
445 | return undef; |
446 | } |
81793b90 |
447 | } |
448 | } |
449 | return $AbsName; |
450 | } |
451 | |
452 | sub Follow_SymLink($) { |
453 | my ($AbsName) = @_; |
454 | |
455 | my ($NewName,$DEV, $INO); |
456 | ($DEV, $INO)= lstat $AbsName; |
457 | |
458 | while (-l _) { |
459 | if ($SLnkSeen{$DEV, $INO}++) { |
460 | if ($follow_skip < 2) { |
461 | die "$AbsName is encountered a second time"; |
a0d0e21e |
462 | } |
463 | else { |
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464 | return undef; |
a0d0e21e |
465 | } |
466 | } |
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467 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
468 | unless(defined $NewName) { |
469 | if ($follow_skip < 2) { |
470 | die "$AbsName is a recursive symbolic link"; |
471 | } |
472 | else { |
473 | return undef; |
a0d0e21e |
474 | } |
81793b90 |
475 | } |
476 | else { |
477 | $AbsName= $NewName; |
478 | } |
479 | ($DEV, $INO) = lstat($AbsName); |
480 | return undef unless defined $DEV; # dangling symbolic link |
481 | } |
482 | |
cd68ec93 |
483 | if ($full_check && defined $DEV && $SLnkSeen{$DEV, $INO}++) { |
7e47e6ff |
484 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
81793b90 |
485 | die "$AbsName encountered a second time"; |
486 | } |
487 | else { |
488 | return undef; |
489 | } |
490 | } |
491 | |
492 | return $AbsName; |
493 | } |
494 | |
17f410f9 |
495 | our($dir, $name, $fullname, $prune); |
81793b90 |
496 | sub _find_dir_symlnk($$$); |
497 | sub _find_dir($$$); |
498 | |
7e47e6ff |
499 | # check whether or not a scalar variable is tainted |
500 | # (code straight from the Camel, 3rd ed., page 561) |
501 | sub is_tainted_pp { |
502 | my $arg = shift; |
503 | my $nada = substr($arg, 0, 0); # zero-length |
504 | local $@; |
505 | eval { eval "# $nada" }; |
506 | return length($@) != 0; |
507 | } |
508 | |
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509 | sub _find_opt { |
510 | my $wanted = shift; |
511 | die "invalid top directory" unless defined $_[0]; |
512 | |
9f826d6a |
513 | # This function must local()ize everything because callbacks may |
514 | # call find() or finddepth() |
515 | |
516 | local %SLnkSeen; |
517 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
518 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
519 | $pre_process, $post_process, $dangling_symlinks); |
9f826d6a |
520 | local($dir, $name, $fullname, $prune); |
521 | |
a0c9c202 |
522 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::getcwd(); |
80e52b73 |
523 | my $cwd_untainted = $cwd; |
524 | my $check_t_cwd = 1; |
525 | $wanted_callback = $wanted->{wanted}; |
526 | $bydepth = $wanted->{bydepth}; |
527 | $pre_process = $wanted->{preprocess}; |
528 | $post_process = $wanted->{postprocess}; |
529 | $no_chdir = $wanted->{no_chdir}; |
530 | $full_check = $wanted->{follow}; |
531 | $follow = $full_check || $wanted->{follow_fast}; |
532 | $follow_skip = $wanted->{follow_skip}; |
533 | $untaint = $wanted->{untaint}; |
534 | $untaint_pat = $wanted->{untaint_pattern}; |
535 | $untaint_skip = $wanted->{untaint_skip}; |
536 | $dangling_symlinks = $wanted->{dangling_symlinks}; |
81793b90 |
537 | |
1cffc1dd |
538 | # for compatibility reasons (find.pl, find2perl) |
9f826d6a |
539 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 |
540 | |
541 | # a symbolic link to a directory doesn't increase the link count |
542 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; |
543 | |
e7b91b67 |
544 | my ($abs_dir, $Is_Dir); |
81793b90 |
545 | |
546 | Proc_Top_Item: |
547 | foreach my $TOP (@_) { |
7e47e6ff |
548 | my $top_item = $TOP; |
549 | |
550 | if ($Is_MacOS) { |
551 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
552 | $top_item = ":$top_item" |
3fa6e24b |
553 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff |
554 | } |
555 | else { |
556 | $top_item =~ s|/\z|| unless $top_item eq '/'; |
557 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
558 | } |
559 | |
560 | $Is_Dir= 0; |
561 | |
562 | if ($follow) { |
563 | |
564 | if ($Is_MacOS) { |
565 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety |
566 | |
567 | if ($top_item eq $File::Find::current_dir) { |
00f4e5f0 |
568 | # avoid empty name after return to '/' |
569 | $name = '/' unless length( $name ); |
7e47e6ff |
570 | $abs_dir = $cwd; |
571 | } |
572 | else { |
573 | $abs_dir = contract_name_Mac($cwd, $top_item); |
574 | unless (defined $abs_dir) { |
cd68ec93 |
575 | warnings::warnif "Can't determine absolute path for $top_item (No such file or directory)\n"; |
7e47e6ff |
576 | next Proc_Top_Item; |
577 | } |
578 | } |
579 | |
580 | } |
581 | else { |
582 | if (substr($top_item,0,1) eq '/') { |
583 | $abs_dir = $top_item; |
584 | } |
585 | elsif ($top_item eq $File::Find::current_dir) { |
586 | $abs_dir = $cwd; |
587 | } |
588 | else { # care about any ../ |
589 | $abs_dir = contract_name("$cwd/",$top_item); |
590 | } |
591 | } |
592 | $abs_dir= Follow_SymLink($abs_dir); |
593 | unless (defined $abs_dir) { |
80e52b73 |
594 | if ($dangling_symlinks) { |
595 | if (ref $dangling_symlinks eq 'CODE') { |
596 | $dangling_symlinks->($top_item, $cwd); |
597 | } else { |
cd68ec93 |
598 | warnings::warnif "$top_item is a dangling symbolic link\n"; |
80e52b73 |
599 | } |
600 | } |
81793b90 |
601 | next Proc_Top_Item; |
7e47e6ff |
602 | } |
603 | |
604 | if (-d _) { |
81793b90 |
605 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
606 | $Is_Dir= 1; |
7e47e6ff |
607 | } |
608 | } |
81793b90 |
609 | else { # no follow |
7e47e6ff |
610 | $topdir = $top_item; |
611 | unless (defined $topnlink) { |
cd68ec93 |
612 | warnings::warnif "Can't stat $top_item: $!\n"; |
7e47e6ff |
613 | next Proc_Top_Item; |
614 | } |
615 | if (-d _) { |
c7b9dd21 |
616 | $top_item =~ s/\.dir\z// if $Is_VMS; |
e7b91b67 |
617 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 |
618 | $Is_Dir= 1; |
7e47e6ff |
619 | } |
237437d0 |
620 | else { |
81793b90 |
621 | $abs_dir= $top_item; |
7e47e6ff |
622 | } |
623 | } |
81793b90 |
624 | |
7e47e6ff |
625 | unless ($Is_Dir) { |
81793b90 |
626 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff |
627 | if ($Is_MacOS) { |
628 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ |
629 | } |
630 | else { |
631 | ($dir,$_) = ('./', $top_item); |
632 | } |
81793b90 |
633 | } |
634 | |
7e47e6ff |
635 | $abs_dir = $dir; |
636 | if (( $untaint ) && (is_tainted($dir) )) { |
637 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; |
81793b90 |
638 | unless (defined $abs_dir) { |
639 | if ($untaint_skip == 0) { |
7e47e6ff |
640 | die "directory $dir is still tainted"; |
81793b90 |
641 | } |
642 | else { |
643 | next Proc_Top_Item; |
644 | } |
645 | } |
7e47e6ff |
646 | } |
81793b90 |
647 | |
7e47e6ff |
648 | unless ($no_chdir || chdir $abs_dir) { |
cd68ec93 |
649 | warnings::warnif "Couldn't chdir $abs_dir: $!\n"; |
7e47e6ff |
650 | next Proc_Top_Item; |
651 | } |
719911cc |
652 | |
7e47e6ff |
653 | $name = $abs_dir . $_; # $File::Find::name |
719911cc |
654 | |
7e47e6ff |
655 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
656 | |
7e47e6ff |
657 | } |
81793b90 |
658 | |
7e47e6ff |
659 | unless ( $no_chdir ) { |
660 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { |
661 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; |
662 | unless (defined $cwd_untainted) { |
663 | die "insecure cwd in find(depth)"; |
664 | } |
665 | $check_t_cwd = 0; |
666 | } |
667 | unless (chdir $cwd_untainted) { |
668 | die "Can't cd to $cwd: $!\n"; |
669 | } |
670 | } |
81793b90 |
671 | } |
672 | } |
673 | |
674 | # API: |
675 | # $wanted |
676 | # $p_dir : "parent directory" |
677 | # $nlink : what came back from the stat |
678 | # preconditions: |
679 | # chdir (if not no_chdir) to dir |
680 | |
681 | sub _find_dir($$$) { |
682 | my ($wanted, $p_dir, $nlink) = @_; |
683 | my ($CdLvl,$Level) = (0,0); |
684 | my @Stack; |
685 | my @filenames; |
686 | my ($subcount,$sub_nlink); |
687 | my $SE= []; |
688 | my $dir_name= $p_dir; |
7e47e6ff |
689 | my $dir_pref; |
39e79f6b |
690 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
691 | my $tainted = 0; |
5fa2bf2b |
692 | my $no_nlink; |
7e47e6ff |
693 | |
694 | if ($Is_MacOS) { |
695 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface |
7e47e6ff |
696 | } |
697 | else { |
698 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
7e47e6ff |
699 | } |
81793b90 |
700 | |
701 | local ($dir, $name, $prune, *DIR); |
7e47e6ff |
702 | |
703 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { |
81793b90 |
704 | my $udir = $p_dir; |
7e47e6ff |
705 | if (( $untaint ) && (is_tainted($p_dir) )) { |
706 | ( $udir ) = $p_dir =~ m|$untaint_pat|; |
81793b90 |
707 | unless (defined $udir) { |
708 | if ($untaint_skip == 0) { |
709 | die "directory $p_dir is still tainted"; |
710 | } |
711 | else { |
712 | return; |
713 | } |
237437d0 |
714 | } |
a0d0e21e |
715 | } |
81793b90 |
716 | unless (chdir $udir) { |
cd68ec93 |
717 | warnings::warnif "Can't cd to $udir: $!\n"; |
81793b90 |
718 | return; |
719 | } |
720 | } |
7e47e6ff |
721 | |
722 | # push the starting directory |
57e73c4b |
723 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 |
724 | |
7e47e6ff |
725 | if ($Is_MacOS) { |
726 | $p_dir = $dir_pref; # ensure trailing ':' |
727 | } |
728 | |
81793b90 |
729 | while (defined $SE) { |
730 | unless ($bydepth) { |
7e47e6ff |
731 | $dir= $p_dir; # $File::Find::dir |
732 | $name= $dir_name; # $File::Find::name |
733 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
81793b90 |
734 | # prune may happen here |
7e47e6ff |
735 | $prune= 0; |
9111eb4b |
736 | # guarantee lstat for directory |
737 | lstat( $dir_name ); |
7e47e6ff |
738 | { &$wanted_callback }; # protect against wild "next" |
739 | next if $prune; |
81793b90 |
740 | } |
7e47e6ff |
741 | |
81793b90 |
742 | # change to that directory |
7e47e6ff |
743 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 |
744 | my $udir= $dir_rel; |
7e47e6ff |
745 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
746 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; |
81793b90 |
747 | unless (defined $udir) { |
748 | if ($untaint_skip == 0) { |
7e47e6ff |
749 | if ($Is_MacOS) { |
750 | die "directory ($p_dir) $dir_rel is still tainted"; |
751 | } |
752 | else { |
753 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; |
754 | } |
755 | } else { # $untaint_skip == 1 |
756 | next; |
81793b90 |
757 | } |
758 | } |
759 | } |
760 | unless (chdir $udir) { |
7e47e6ff |
761 | if ($Is_MacOS) { |
cd68ec93 |
762 | warnings::warnif "Can't cd to ($p_dir) $udir: $!\n"; |
7e47e6ff |
763 | } |
764 | else { |
cd68ec93 |
765 | warnings::warnif "Can't cd to (" . |
766 | ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n"; |
7e47e6ff |
767 | } |
81793b90 |
768 | next; |
769 | } |
770 | $CdLvl++; |
771 | } |
772 | |
7e47e6ff |
773 | if ($Is_MacOS) { |
774 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
775 | } |
776 | |
777 | $dir= $dir_name; # $File::Find::dir |
81793b90 |
778 | |
779 | # Get the list of files in the current directory. |
7e47e6ff |
780 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
cd68ec93 |
781 | warnings::warnif "Can't opendir($dir_name): $!\n"; |
81793b90 |
782 | next; |
783 | } |
784 | @filenames = readdir DIR; |
785 | closedir(DIR); |
719c805e |
786 | @filenames = &$pre_process(@filenames) if $pre_process; |
787 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; |
81793b90 |
788 | |
5fa2bf2b |
789 | # default: use whatever was specifid |
790 | # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back) |
791 | $no_nlink = $avoid_nlink; |
792 | # if dir has wrong nlink count, force switch to slower stat method |
793 | $no_nlink = 1 if ($nlink < 2); |
794 | |
795 | if ($nlink == 2 && !$no_nlink) { |
81793b90 |
796 | # This dir has no subdirectories. |
797 | for my $FN (@filenames) { |
7e47e6ff |
798 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
799 | |
7e47e6ff |
800 | $name = $dir_pref . $FN; # $File::Find::name |
801 | $_ = ($no_chdir ? $name : $FN); # $_ |
73396e07 |
802 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
803 | } |
804 | |
805 | } |
806 | else { |
807 | # This dir has subdirectories. |
808 | $subcount = $nlink - 2; |
809 | |
810 | for my $FN (@filenames) { |
7e47e6ff |
811 | next if $FN =~ $File::Find::skip_pattern; |
5fa2bf2b |
812 | if ($subcount > 0 || $no_nlink) { |
81793b90 |
813 | # Seen all the subdirs? |
814 | # check for directoriness. |
815 | # stat is faster for a file in the current directory |
07867069 |
816 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 |
817 | |
818 | if (-d _) { |
819 | --$subcount; |
c7b9dd21 |
820 | $FN =~ s/\.dir\z// if $Is_VMS; |
81793b90 |
821 | push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
822 | } |
823 | else { |
7e47e6ff |
824 | $name = $dir_pref . $FN; # $File::Find::name |
825 | $_= ($no_chdir ? $name : $FN); # $_ |
73396e07 |
826 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
827 | } |
828 | } |
07867069 |
829 | else { |
7e47e6ff |
830 | $name = $dir_pref . $FN; # $File::Find::name |
831 | $_= ($no_chdir ? $name : $FN); # $_ |
73396e07 |
832 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
833 | } |
834 | } |
835 | } |
17b275ff |
836 | } |
837 | continue { |
57e73c4b |
838 | while ( defined ($SE = pop @Stack) ) { |
81793b90 |
839 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
840 | if ($CdLvl > $Level && !$no_chdir) { |
7e47e6ff |
841 | my $tmp; |
842 | if ($Is_MacOS) { |
843 | $tmp = (':' x ($CdLvl-$Level)) . ':'; |
844 | } |
845 | else { |
846 | $tmp = join('/',('..') x ($CdLvl-$Level)); |
847 | } |
848 | die "Can't cd to $dir_name" . $tmp |
849 | unless chdir ($tmp); |
81793b90 |
850 | $CdLvl = $Level; |
851 | } |
7e47e6ff |
852 | |
853 | if ($Is_MacOS) { |
854 | # $pdir always has a trailing ':', except for the starting dir, |
855 | # where $dir_rel eq ':' |
856 | $dir_name = "$p_dir$dir_rel"; |
857 | $dir_pref = "$dir_name:"; |
858 | } |
859 | else { |
860 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
861 | $dir_pref = "$dir_name/"; |
862 | } |
863 | |
719c805e |
864 | if ( $nlink == -2 ) { |
7e47e6ff |
865 | $name = $dir = $p_dir; # $File::Find::name / dir |
39e79f6b |
866 | $_ = $File::Find::current_dir; |
719c805e |
867 | &$post_process; # End-of-directory processing |
7e47e6ff |
868 | } |
869 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now |
870 | $name = $dir_name; |
871 | if ($Is_MacOS) { |
872 | if ($dir_rel eq ':') { # must be the top dir, where we started |
873 | $name =~ s|:$||; # $File::Find::name |
874 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
875 | } |
876 | $dir = $p_dir; # $File::Find::dir |
877 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
878 | } |
879 | else { |
880 | if ( substr($name,-2) eq '/.' ) { |
5cf0a2f2 |
881 | substr($name, length($name) == 2 ? -1 : -2) = ''; |
7e47e6ff |
882 | } |
883 | $dir = $p_dir; |
884 | $_ = ($no_chdir ? $dir_name : $dir_rel ); |
885 | if ( substr($_,-2) eq '/.' ) { |
5cf0a2f2 |
886 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
887 | } |
888 | } |
9111eb4b |
889 | # guarantee lstat at return to directory |
890 | lstat( $dir_name ); |
7e47e6ff |
891 | { &$wanted_callback }; # protect against wild "next" |
892 | } |
893 | else { |
894 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
895 | last; |
896 | } |
81793b90 |
897 | } |
a0d0e21e |
898 | } |
899 | } |
900 | |
81793b90 |
901 | |
902 | # API: |
903 | # $wanted |
904 | # $dir_loc : absolute location of a dir |
905 | # $p_dir : "parent directory" |
906 | # preconditions: |
907 | # chdir (if not no_chdir) to dir |
908 | |
909 | sub _find_dir_symlnk($$$) { |
7e47e6ff |
910 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 |
911 | my @Stack; |
912 | my @filenames; |
913 | my $new_loc; |
7e47e6ff |
914 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 |
915 | my $SE = []; |
916 | my $dir_name = $p_dir; |
7e47e6ff |
917 | my $dir_pref; |
918 | my $loc_pref; |
39e79f6b |
919 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
920 | my $byd_flag; # flag for pending stack entry if $bydepth |
921 | my $tainted = 0; |
922 | my $ok = 1; |
923 | |
924 | if ($Is_MacOS) { |
925 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; |
926 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; |
7e47e6ff |
927 | } else { |
928 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
929 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); |
7e47e6ff |
930 | } |
81793b90 |
931 | |
932 | local ($dir, $name, $fullname, $prune, *DIR); |
7e47e6ff |
933 | |
934 | unless ($no_chdir) { |
935 | # untaint the topdir |
936 | if (( $untaint ) && (is_tainted($dir_loc) )) { |
937 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted |
938 | # once untainted, $updir_loc is pushed on the stack (as parent directory); |
939 | # hence, we don't need to untaint the parent directory every time we chdir |
940 | # to it later |
941 | unless (defined $updir_loc) { |
81793b90 |
942 | if ($untaint_skip == 0) { |
943 | die "directory $dir_loc is still tainted"; |
944 | } |
945 | else { |
946 | return; |
947 | } |
948 | } |
949 | } |
7e47e6ff |
950 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
951 | unless ($ok) { |
cd68ec93 |
952 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
953 | return; |
954 | } |
955 | } |
956 | |
7e47e6ff |
957 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
958 | |
959 | if ($Is_MacOS) { |
960 | $p_dir = $dir_pref; # ensure trailing ':' |
961 | } |
57e73c4b |
962 | |
81793b90 |
963 | while (defined $SE) { |
964 | |
965 | unless ($bydepth) { |
7e47e6ff |
966 | # change (back) to parent directory (always untainted) |
704ea872 |
967 | unless ($no_chdir) { |
7e47e6ff |
968 | unless (chdir $updir_loc) { |
cd68ec93 |
969 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
704ea872 |
970 | next; |
971 | } |
972 | } |
7e47e6ff |
973 | $dir= $p_dir; # $File::Find::dir |
974 | $name= $dir_name; # $File::Find::name |
975 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
976 | $fullname= $dir_loc; # $File::Find::fullname |
81793b90 |
977 | # prune may happen here |
7e47e6ff |
978 | $prune= 0; |
704ea872 |
979 | lstat($_); # make sure file tests with '_' work |
7e47e6ff |
980 | { &$wanted_callback }; # protect against wild "next" |
981 | next if $prune; |
81793b90 |
982 | } |
983 | |
984 | # change to that directory |
7e47e6ff |
985 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
986 | $updir_loc = $dir_loc; |
987 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { |
988 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir |
989 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; |
990 | unless (defined $updir_loc) { |
81793b90 |
991 | if ($untaint_skip == 0) { |
992 | die "directory $dir_loc is still tainted"; |
a0d0e21e |
993 | } |
237437d0 |
994 | else { |
81793b90 |
995 | next; |
237437d0 |
996 | } |
a0d0e21e |
997 | } |
998 | } |
7e47e6ff |
999 | unless (chdir $updir_loc) { |
cd68ec93 |
1000 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
1001 | next; |
1002 | } |
1003 | } |
1004 | |
7e47e6ff |
1005 | if ($Is_MacOS) { |
1006 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
1007 | } |
1008 | |
1009 | $dir = $dir_name; # $File::Find::dir |
81793b90 |
1010 | |
1011 | # Get the list of files in the current directory. |
7e47e6ff |
1012 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
cd68ec93 |
1013 | warnings::warnif "Can't opendir($dir_loc): $!\n"; |
81793b90 |
1014 | next; |
1015 | } |
1016 | @filenames = readdir DIR; |
1017 | closedir(DIR); |
1018 | |
1019 | for my $FN (@filenames) { |
7e47e6ff |
1020 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
1021 | |
1022 | # follow symbolic links / do an lstat |
07867069 |
1023 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 |
1024 | |
1025 | # ignore if invalid symlink |
1026 | next unless defined $new_loc; |
7e47e6ff |
1027 | |
81793b90 |
1028 | if (-d _) { |
7e47e6ff |
1029 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 |
1030 | } |
1031 | else { |
7e47e6ff |
1032 | $fullname = $new_loc; # $File::Find::fullname |
1033 | $name = $dir_pref . $FN; # $File::Find::name |
1034 | $_ = ($no_chdir ? $name : $FN); # $_ |
73396e07 |
1035 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
1036 | } |
1037 | } |
1038 | |
81793b90 |
1039 | } |
1040 | continue { |
57e73c4b |
1041 | while (defined($SE = pop @Stack)) { |
7e47e6ff |
1042 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
1043 | if ($Is_MacOS) { |
1044 | # $p_dir always has a trailing ':', except for the starting dir, |
1045 | # where $dir_rel eq ':' |
1046 | $dir_name = "$p_dir$dir_rel"; |
1047 | $dir_pref = "$dir_name:"; |
1048 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; |
1049 | } |
1050 | else { |
1051 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
1052 | $dir_pref = "$dir_name/"; |
1053 | $loc_pref = "$dir_loc/"; |
1054 | } |
1055 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now |
1056 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1057 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted |
cd68ec93 |
1058 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
7e47e6ff |
1059 | next; |
1060 | } |
1061 | } |
1062 | $fullname = $dir_loc; # $File::Find::fullname |
1063 | $name = $dir_name; # $File::Find::name |
1064 | if ($Is_MacOS) { |
1065 | if ($dir_rel eq ':') { # must be the top dir, where we started |
1066 | $name =~ s|:$||; # $File::Find::name |
1067 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
1068 | } |
1069 | $dir = $p_dir; # $File::Find::dir |
1070 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
1071 | } |
1072 | else { |
1073 | if ( substr($name,-2) eq '/.' ) { |
1074 | $name =~ s|/\.$||; # $File::Find::name |
1075 | } |
1076 | $dir = $p_dir; # $File::Find::dir |
1077 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ |
1078 | if ( substr($_,-2) eq '/.' ) { |
1079 | s|/\.$||; |
1080 | } |
1081 | } |
1082 | |
1083 | lstat($_); # make sure file tests with '_' work |
1084 | { &$wanted_callback }; # protect against wild "next" |
1085 | } |
1086 | else { |
1087 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; |
1088 | last; |
1089 | } |
a0d0e21e |
1090 | } |
1091 | } |
1092 | } |
1093 | |
81793b90 |
1094 | |
20408e3c |
1095 | sub wrap_wanted { |
81793b90 |
1096 | my $wanted = shift; |
1097 | if ( ref($wanted) eq 'HASH' ) { |
1098 | if ( $wanted->{follow} || $wanted->{follow_fast}) { |
1099 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; |
1100 | } |
1101 | if ( $wanted->{untaint} ) { |
7e47e6ff |
1102 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 |
1103 | unless defined $wanted->{untaint_pattern}; |
1104 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; |
1105 | } |
1106 | return $wanted; |
1107 | } |
1108 | else { |
1109 | return { wanted => $wanted }; |
1110 | } |
a0d0e21e |
1111 | } |
1112 | |
20408e3c |
1113 | sub find { |
81793b90 |
1114 | my $wanted = shift; |
1115 | _find_opt(wrap_wanted($wanted), @_); |
a0d0e21e |
1116 | } |
1117 | |
55d729e4 |
1118 | sub finddepth { |
81793b90 |
1119 | my $wanted = wrap_wanted(shift); |
1120 | $wanted->{bydepth} = 1; |
1121 | _find_opt($wanted, @_); |
20408e3c |
1122 | } |
6280b799 |
1123 | |
7e47e6ff |
1124 | # default |
1125 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; |
1126 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; |
1127 | |
6280b799 |
1128 | # These are hard-coded for now, but may move to hint files. |
10eba763 |
1129 | if ($^O eq 'VMS') { |
81793b90 |
1130 | $Is_VMS = 1; |
7e47e6ff |
1131 | $File::Find::dont_use_nlink = 1; |
1132 | } |
1133 | elsif ($^O eq 'MacOS') { |
1134 | $Is_MacOS = 1; |
1135 | $File::Find::dont_use_nlink = 1; |
1136 | $File::Find::skip_pattern = qr/^Icon\015\z/; |
1137 | $File::Find::untaint_pattern = qr|^(.+)$|; |
748a9306 |
1138 | } |
1139 | |
7e47e6ff |
1140 | # this _should_ work properly on all platforms |
1141 | # where File::Find can be expected to work |
1142 | $File::Find::current_dir = File::Spec->curdir || '.'; |
1143 | |
81793b90 |
1144 | $File::Find::dont_use_nlink = 1 |
497711e7 |
1145 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
2986a63f |
1146 | $^O eq 'cygwin' || $^O eq 'epoc' || $^O eq 'NetWare'; |
6280b799 |
1147 | |
20408e3c |
1148 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1149 | # report the number of links in a directory as an indication |
1150 | # of the number of files. |
1151 | # See, e.g. hints/machten.sh for MachTen 2.2. |
81793b90 |
1152 | unless ($File::Find::dont_use_nlink) { |
1153 | require Config; |
1154 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); |
20408e3c |
1155 | } |
1156 | |
7e47e6ff |
1157 | # We need a function that checks if a scalar is tainted. Either use the |
1158 | # Scalar::Util module's tainted() function or our (slower) pure Perl |
1159 | # fallback is_tainted_pp() |
1160 | { |
1161 | local $@; |
1162 | eval { require Scalar::Util }; |
1163 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; |
1164 | } |
1165 | |
a0d0e21e |
1166 | 1; |