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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 | our $VERSION = '1.03'; |
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6 | require Exporter; |
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7 | require Cwd; |
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8 | |
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9 | =head1 NAME |
10 | |
11 | find - traverse a file tree |
12 | |
13 | finddepth - traverse a directory structure depth-first |
14 | |
15 | =head1 SYNOPSIS |
16 | |
17 | use File::Find; |
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18 | find(\&wanted, '/foo', '/bar'); |
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19 | sub wanted { ... } |
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20 | |
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21 | use File::Find; |
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22 | finddepth(\&wanted, '/foo', '/bar'); |
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23 | sub wanted { ... } |
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24 | |
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25 | use File::Find; |
26 | find({ wanted => \&process, follow => 1 }, '.'); |
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27 | |
28 | =head1 DESCRIPTION |
29 | |
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30 | The first argument to find() is either a hash reference describing the |
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31 | operations to be performed for each file, or a code reference. |
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32 | |
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33 | Here are the possible keys for the hash: |
34 | |
35 | =over 3 |
36 | |
37 | =item C<wanted> |
38 | |
39 | The value should be a code reference. This code reference is called |
40 | I<the wanted() function> below. |
41 | |
42 | =item C<bydepth> |
43 | |
44 | Reports the name of a directory only AFTER all its entries |
45 | have been reported. Entry point finddepth() is a shortcut for |
46 | specifying C<{ bydepth => 1 }> in the first argument of find(). |
47 | |
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48 | =item C<preprocess> |
49 | |
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50 | The value should be a code reference. This code reference is used to |
51 | preprocess the current directory. The name of currently processed |
52 | directory is in $File::Find::dir. Your preprocessing function is |
53 | called after readdir() but before the loop that calls the wanted() |
54 | function. It is called with a list of strings (actually file/directory |
55 | names) and is expected to return a list of strings. The code can be |
56 | used to sort the file/directory names alphabetically, numerically, |
57 | or to filter out directory entries based on their name alone. When |
58 | I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. |
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59 | |
60 | =item C<postprocess> |
61 | |
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62 | The value should be a code reference. It is invoked just before leaving |
63 | the currently processed directory. It is called in void context with no |
64 | arguments. The name of the current directory is in $File::Find::dir. This |
65 | hook is handy for summarizing a directory, such as calculating its disk |
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66 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
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67 | no-op. |
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68 | |
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69 | =item C<follow> |
70 | |
71 | Causes symbolic links to be followed. Since directory trees with symbolic |
72 | links (followed) may contain files more than once and may even have |
73 | cycles, a hash has to be built up with an entry for each file. |
74 | This might be expensive both in space and time for a large |
75 | directory tree. See I<follow_fast> and I<follow_skip> below. |
76 | If either I<follow> or I<follow_fast> is in effect: |
77 | |
78 | =over 6 |
79 | |
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80 | =item * |
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81 | |
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82 | It is guaranteed that an I<lstat> has been called before the user's |
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83 | I<wanted()> function is called. This enables fast file checks involving S< _>. |
84 | |
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85 | =item * |
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86 | |
87 | There is a variable C<$File::Find::fullname> which holds the absolute |
88 | pathname of the file with all symbolic links resolved |
89 | |
90 | =back |
91 | |
92 | =item C<follow_fast> |
93 | |
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94 | This is similar to I<follow> except that it may report some files more |
95 | than once. It does detect cycles, however. Since only symbolic links |
96 | have to be hashed, this is much cheaper both in space and time. If |
97 | processing a file more than once (by the user's I<wanted()> function) |
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98 | is worse than just taking time, the option I<follow> should be used. |
99 | |
100 | =item C<follow_skip> |
101 | |
102 | C<follow_skip==1>, which is the default, causes all files which are |
103 | neither directories nor symbolic links to be ignored if they are about |
104 | to be processed a second time. If a directory or a symbolic link |
105 | are about to be processed a second time, File::Find dies. |
106 | C<follow_skip==0> causes File::Find to die if any file is about to be |
107 | processed a second time. |
108 | C<follow_skip==2> causes File::Find to ignore any duplicate files and |
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109 | directories but to proceed normally otherwise. |
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110 | |
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111 | =item C<dangling_symlinks> |
112 | |
113 | If true and a code reference, will be called with the symbolic link |
114 | name and the directory it lives in as arguments. Otherwise, if true |
115 | and warnings are on, warning "symbolic_link_name is a dangling |
116 | symbolic link\n" will be issued. If false, the dangling symbolic link |
117 | will be silently ignored. |
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118 | |
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119 | =item C<no_chdir> |
120 | |
121 | Does not C<chdir()> to each directory as it recurses. The wanted() |
122 | function will need to be aware of this, of course. In this case, |
123 | C<$_> will be the same as C<$File::Find::name>. |
124 | |
125 | =item C<untaint> |
126 | |
127 | If find is used in taint-mode (-T command line switch or if EUID != UID |
128 | or if EGID != GID) then internally directory names have to be untainted |
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129 | before they can be chdir'ed to. Therefore they are checked against a regular |
130 | expression I<untaint_pattern>. Note that all names passed to the user's |
131 | I<wanted()> function are still tainted. If this option is used while |
132 | not in taint-mode, C<untaint> is a no-op. |
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133 | |
134 | =item C<untaint_pattern> |
135 | |
136 | See above. This should be set using the C<qr> quoting operator. |
137 | The default is set to C<qr|^([-+@\w./]+)$|>. |
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138 | Note that the parentheses are vital. |
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139 | |
140 | =item C<untaint_skip> |
141 | |
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142 | If set, a directory which fails the I<untaint_pattern> is skipped, |
143 | including all its sub-directories. The default is to 'die' in such a case. |
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144 | |
145 | =back |
146 | |
147 | The wanted() function does whatever verifications you want. |
148 | C<$File::Find::dir> contains the current directory name, and C<$_> the |
149 | current filename within that directory. C<$File::Find::name> contains |
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150 | the complete pathname to the file. You are chdir()'d to |
151 | C<$File::Find::dir> when the function is called, unless C<no_chdir> |
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152 | was specified. When C<follow> or C<follow_fast> are in effect, there is |
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153 | also a C<$File::Find::fullname>. The function may set |
154 | C<$File::Find::prune> to prune the tree unless C<bydepth> was |
155 | specified. Unless C<follow> or C<follow_fast> is specified, for |
156 | compatibility reasons (find.pl, find2perl) there are in addition the |
157 | following globals available: C<$File::Find::topdir>, |
158 | C<$File::Find::topdev>, C<$File::Find::topino>, |
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159 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
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160 | |
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161 | This library is useful for the C<find2perl> tool, which when fed, |
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162 | |
163 | find2perl / -name .nfs\* -mtime +7 \ |
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164 | -exec rm -f {} \; -o -fstype nfs -prune |
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165 | |
166 | produces something like: |
167 | |
168 | sub wanted { |
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169 | /^\.nfs.*\z/s && |
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170 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
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171 | int(-M _) > 7 && |
172 | unlink($_) |
173 | || |
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174 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
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175 | $dev < 0 && |
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176 | ($File::Find::prune = 1); |
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177 | } |
178 | |
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179 | Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical |
180 | filehandle that caches the information from the preceding |
181 | stat(), lstat(), or filetest. |
182 | |
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183 | Here's another interesting wanted function. It will find all symbolic |
184 | links that don't resolve: |
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185 | |
186 | sub wanted { |
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187 | -l && !-e && print "bogus link: $File::Find::name\n"; |
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188 | } |
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189 | |
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190 | See also the script C<pfind> on CPAN for a nice application of this |
191 | module. |
192 | |
193 | =head1 CAVEAT |
194 | |
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195 | =over 2 |
196 | |
197 | =item $dont_use_nlink |
198 | |
199 | You can set the variable C<$File::Find::dont_use_nlink> to 1, if you want to |
200 | force File::Find to always stat directories. This was used for systems |
201 | that do not have the correct C<nlink> count for directories. Examples are |
202 | ISO-9660 (CD-R), AFS, and operating systems like OS/2, DOS and a couple of |
203 | others. |
204 | |
205 | Since now File::Find should now detect such things on-the-fly and switch it |
206 | self to using stat, this will probably not a problem to you. |
207 | |
208 | If you do set $dont_use_nlink to 1, you will notice slow-downs. |
209 | |
210 | =item symlinks |
211 | |
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212 | Be aware that the option to follow symbolic links can be dangerous. |
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213 | Depending on the structure of the directory tree (including symbolic |
214 | links to directories) you might traverse a given (physical) directory |
215 | more than once (only if C<follow_fast> is in effect). |
216 | Furthermore, deleting or changing files in a symbolically linked directory |
217 | might cause very unpleasant surprises, since you delete or change files |
218 | in an unknown directory. |
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219 | |
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220 | =back |
221 | |
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222 | =head1 NOTES |
223 | |
224 | =over 4 |
225 | |
226 | =item * |
227 | |
228 | Mac OS (Classic) users should note a few differences: |
229 | |
230 | =over 4 |
231 | |
232 | =item * |
233 | |
234 | The path separator is ':', not '/', and the current directory is denoted |
235 | as ':', not '.'. You should be careful about specifying relative pathnames. |
236 | While a full path always begins with a volume name, a relative pathname |
237 | should always begin with a ':'. If specifying a volume name only, a |
238 | trailing ':' is required. |
239 | |
240 | =item * |
241 | |
242 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> |
243 | contains the name of a directory, that name may or may not end with a |
244 | ':'. Likewise, C<$File::Find::name>, which contains the complete |
245 | pathname to that directory, and C<$File::Find::fullname>, which holds |
246 | the absolute pathname of that directory with all symbolic links resolved, |
247 | may or may not end with a ':'. |
248 | |
249 | =item * |
250 | |
251 | The default C<untaint_pattern> (see above) on Mac OS is set to |
252 | C<qr|^(.+)$|>. Note that the parentheses are vital. |
253 | |
254 | =item * |
255 | |
256 | The invisible system file "Icon\015" is ignored. While this file may |
257 | appear in every directory, there are some more invisible system files |
258 | on every volume, which are all located at the volume root level (i.e. |
259 | "MacintoshHD:"). These system files are B<not> excluded automatically. |
260 | Your filter may use the following code to recognize invisible files or |
261 | directories (requires Mac::Files): |
262 | |
263 | use Mac::Files; |
264 | |
265 | # invisible() -- returns 1 if file/directory is invisible, |
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266 | # 0 if it's visible or undef if an error occurred |
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267 | |
268 | sub invisible($) { |
269 | my $file = shift; |
270 | my ($fileCat, $fileInfo); |
271 | my $invisible_flag = 1 << 14; |
272 | |
273 | if ( $fileCat = FSpGetCatInfo($file) ) { |
274 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { |
275 | return (($fileInfo->fdFlags & $invisible_flag) && 1); |
276 | } |
277 | } |
278 | return undef; |
279 | } |
280 | |
281 | Generally, invisible files are system files, unless an odd application |
282 | decides to use invisible files for its own purposes. To distinguish |
283 | such files from system files, you have to look at the B<type> and B<creator> |
284 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and |
285 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes |
286 | (see MacPerl.pm for details). |
287 | |
288 | Files that appear on the desktop actually reside in an (hidden) directory |
289 | named "Desktop Folder" on the particular disk volume. Note that, although |
290 | all desktop files appear to be on the same "virtual" desktop, each disk |
291 | volume actually maintains its own "Desktop Folder" directory. |
292 | |
293 | =back |
294 | |
295 | =back |
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296 | |
a85af077 |
297 | =head1 HISTORY |
298 | |
299 | File::Find used to produce incorrect results if called recursively. |
300 | During the development of perl 5.8 this bug was fixed. |
301 | The first fixed version of File::Find was 1.01. |
302 | |
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303 | =cut |
304 | |
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305 | our @ISA = qw(Exporter); |
306 | our @EXPORT = qw(find finddepth); |
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307 | |
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308 | |
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309 | use strict; |
310 | my $Is_VMS; |
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311 | my $Is_MacOS; |
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312 | |
313 | require File::Basename; |
7e47e6ff |
314 | require File::Spec; |
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315 | |
9f826d6a |
316 | # Should ideally be my() not our() but local() currently |
317 | # refuses to operate on lexicals |
318 | |
319 | our %SLnkSeen; |
320 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
719c805e |
321 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
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322 | $pre_process, $post_process, $dangling_symlinks); |
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323 | |
324 | sub contract_name { |
325 | my ($cdir,$fn) = @_; |
326 | |
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327 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
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328 | |
329 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); |
330 | |
331 | $fn =~ s|^\./||; |
332 | |
333 | my $abs_name= $cdir . $fn; |
334 | |
335 | if (substr($fn,0,3) eq '../') { |
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336 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
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337 | } |
338 | |
339 | return $abs_name; |
340 | } |
341 | |
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342 | # return the absolute name of a directory or file |
343 | sub contract_name_Mac { |
344 | my ($cdir,$fn) = @_; |
345 | my $abs_name; |
346 | |
347 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' |
348 | |
349 | my $colon_count = length ($1); |
350 | if ($colon_count == 1) { |
351 | $abs_name = $cdir . $2; |
352 | return $abs_name; |
353 | } |
354 | else { |
355 | # need to move up the tree, but |
356 | # only if it's not a volume name |
357 | for (my $i=1; $i<$colon_count; $i++) { |
358 | unless ($cdir =~ /^[^:]+:$/) { # volume name |
359 | $cdir =~ s/[^:]+:$//; |
360 | } |
361 | else { |
362 | return undef; |
363 | } |
364 | } |
365 | $abs_name = $cdir . $2; |
366 | return $abs_name; |
367 | } |
368 | |
369 | } |
370 | else { |
371 | |
372 | # $fn may be a valid path to a directory or file or (dangling) |
373 | # symlink, without a leading ':' |
374 | if ( (-e $fn) || (-l $fn) ) { |
375 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* |
376 | return $fn; # $fn is already an absolute path |
377 | } |
378 | else { |
379 | $abs_name = $cdir . $fn; |
380 | return $abs_name; |
381 | } |
382 | } |
383 | else { # argh!, $fn is not a valid directory/file |
384 | return undef; |
385 | } |
386 | } |
387 | } |
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388 | |
389 | sub PathCombine($$) { |
390 | my ($Base,$Name) = @_; |
391 | my $AbsName; |
392 | |
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393 | if ($Is_MacOS) { |
394 | # $Name is the resolved symlink (always a full path on MacOS), |
395 | # i.e. there's no need to call contract_name_Mac() |
396 | $AbsName = $Name; |
397 | |
398 | # (simple) check for recursion |
399 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion |
400 | return undef; |
401 | } |
81793b90 |
402 | } |
403 | else { |
7e47e6ff |
404 | if (substr($Name,0,1) eq '/') { |
405 | $AbsName= $Name; |
406 | } |
407 | else { |
408 | $AbsName= contract_name($Base,$Name); |
409 | } |
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410 | |
7e47e6ff |
411 | # (simple) check for recursion |
412 | my $newlen= length($AbsName); |
413 | if ($newlen <= length($Base)) { |
414 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') |
415 | && $AbsName eq substr($Base,0,$newlen)) |
416 | { |
417 | return undef; |
418 | } |
81793b90 |
419 | } |
420 | } |
421 | return $AbsName; |
422 | } |
423 | |
424 | sub Follow_SymLink($) { |
425 | my ($AbsName) = @_; |
426 | |
427 | my ($NewName,$DEV, $INO); |
428 | ($DEV, $INO)= lstat $AbsName; |
429 | |
430 | while (-l _) { |
431 | if ($SLnkSeen{$DEV, $INO}++) { |
432 | if ($follow_skip < 2) { |
433 | die "$AbsName is encountered a second time"; |
a0d0e21e |
434 | } |
435 | else { |
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436 | return undef; |
a0d0e21e |
437 | } |
438 | } |
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439 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
440 | unless(defined $NewName) { |
441 | if ($follow_skip < 2) { |
442 | die "$AbsName is a recursive symbolic link"; |
443 | } |
444 | else { |
445 | return undef; |
a0d0e21e |
446 | } |
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447 | } |
448 | else { |
449 | $AbsName= $NewName; |
450 | } |
451 | ($DEV, $INO) = lstat($AbsName); |
452 | return undef unless defined $DEV; # dangling symbolic link |
453 | } |
454 | |
455 | if ($full_check && $SLnkSeen{$DEV, $INO}++) { |
7e47e6ff |
456 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
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457 | die "$AbsName encountered a second time"; |
458 | } |
459 | else { |
460 | return undef; |
461 | } |
462 | } |
463 | |
464 | return $AbsName; |
465 | } |
466 | |
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467 | our($dir, $name, $fullname, $prune); |
81793b90 |
468 | sub _find_dir_symlnk($$$); |
469 | sub _find_dir($$$); |
470 | |
7e47e6ff |
471 | # check whether or not a scalar variable is tainted |
472 | # (code straight from the Camel, 3rd ed., page 561) |
473 | sub is_tainted_pp { |
474 | my $arg = shift; |
475 | my $nada = substr($arg, 0, 0); # zero-length |
476 | local $@; |
477 | eval { eval "# $nada" }; |
478 | return length($@) != 0; |
479 | } |
480 | |
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481 | sub _find_opt { |
482 | my $wanted = shift; |
483 | die "invalid top directory" unless defined $_[0]; |
484 | |
9f826d6a |
485 | # This function must local()ize everything because callbacks may |
486 | # call find() or finddepth() |
487 | |
488 | local %SLnkSeen; |
489 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
490 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
491 | $pre_process, $post_process, $dangling_symlinks); |
9f826d6a |
492 | local($dir, $name, $fullname, $prune); |
493 | |
a0c9c202 |
494 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::getcwd(); |
80e52b73 |
495 | my $cwd_untainted = $cwd; |
496 | my $check_t_cwd = 1; |
497 | $wanted_callback = $wanted->{wanted}; |
498 | $bydepth = $wanted->{bydepth}; |
499 | $pre_process = $wanted->{preprocess}; |
500 | $post_process = $wanted->{postprocess}; |
501 | $no_chdir = $wanted->{no_chdir}; |
502 | $full_check = $wanted->{follow}; |
503 | $follow = $full_check || $wanted->{follow_fast}; |
504 | $follow_skip = $wanted->{follow_skip}; |
505 | $untaint = $wanted->{untaint}; |
506 | $untaint_pat = $wanted->{untaint_pattern}; |
507 | $untaint_skip = $wanted->{untaint_skip}; |
508 | $dangling_symlinks = $wanted->{dangling_symlinks}; |
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509 | |
1cffc1dd |
510 | # for compatibility reasons (find.pl, find2perl) |
9f826d6a |
511 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 |
512 | |
513 | # a symbolic link to a directory doesn't increase the link count |
514 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; |
515 | |
e7b91b67 |
516 | my ($abs_dir, $Is_Dir); |
81793b90 |
517 | |
518 | Proc_Top_Item: |
519 | foreach my $TOP (@_) { |
7e47e6ff |
520 | my $top_item = $TOP; |
521 | |
522 | if ($Is_MacOS) { |
523 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
524 | $top_item = ":$top_item" |
3fa6e24b |
525 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff |
526 | } |
527 | else { |
528 | $top_item =~ s|/\z|| unless $top_item eq '/'; |
529 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
530 | } |
531 | |
532 | $Is_Dir= 0; |
533 | |
534 | if ($follow) { |
535 | |
536 | if ($Is_MacOS) { |
537 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety |
538 | |
539 | if ($top_item eq $File::Find::current_dir) { |
540 | $abs_dir = $cwd; |
541 | } |
542 | else { |
543 | $abs_dir = contract_name_Mac($cwd, $top_item); |
544 | unless (defined $abs_dir) { |
3fa6e24b |
545 | warn "Can't determine absolute path for $top_item (No such file or directory)\n" if $^W; |
7e47e6ff |
546 | next Proc_Top_Item; |
547 | } |
548 | } |
549 | |
550 | } |
551 | else { |
552 | if (substr($top_item,0,1) eq '/') { |
553 | $abs_dir = $top_item; |
554 | } |
555 | elsif ($top_item eq $File::Find::current_dir) { |
556 | $abs_dir = $cwd; |
557 | } |
558 | else { # care about any ../ |
559 | $abs_dir = contract_name("$cwd/",$top_item); |
560 | } |
561 | } |
562 | $abs_dir= Follow_SymLink($abs_dir); |
563 | unless (defined $abs_dir) { |
80e52b73 |
564 | if ($dangling_symlinks) { |
565 | if (ref $dangling_symlinks eq 'CODE') { |
566 | $dangling_symlinks->($top_item, $cwd); |
567 | } else { |
568 | warn "$top_item is a dangling symbolic link\n" if $^W; |
569 | } |
570 | } |
81793b90 |
571 | next Proc_Top_Item; |
7e47e6ff |
572 | } |
573 | |
574 | if (-d _) { |
81793b90 |
575 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
576 | $Is_Dir= 1; |
7e47e6ff |
577 | } |
578 | } |
81793b90 |
579 | else { # no follow |
7e47e6ff |
580 | $topdir = $top_item; |
581 | unless (defined $topnlink) { |
3fa6e24b |
582 | warn "Can't stat $top_item: $!\n" if $^W; |
7e47e6ff |
583 | next Proc_Top_Item; |
584 | } |
585 | if (-d _) { |
c7b9dd21 |
586 | $top_item =~ s/\.dir\z// if $Is_VMS; |
e7b91b67 |
587 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 |
588 | $Is_Dir= 1; |
7e47e6ff |
589 | } |
237437d0 |
590 | else { |
81793b90 |
591 | $abs_dir= $top_item; |
7e47e6ff |
592 | } |
593 | } |
81793b90 |
594 | |
7e47e6ff |
595 | unless ($Is_Dir) { |
81793b90 |
596 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff |
597 | if ($Is_MacOS) { |
598 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ |
599 | } |
600 | else { |
601 | ($dir,$_) = ('./', $top_item); |
602 | } |
81793b90 |
603 | } |
604 | |
7e47e6ff |
605 | $abs_dir = $dir; |
606 | if (( $untaint ) && (is_tainted($dir) )) { |
607 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; |
81793b90 |
608 | unless (defined $abs_dir) { |
609 | if ($untaint_skip == 0) { |
7e47e6ff |
610 | die "directory $dir is still tainted"; |
81793b90 |
611 | } |
612 | else { |
613 | next Proc_Top_Item; |
614 | } |
615 | } |
7e47e6ff |
616 | } |
81793b90 |
617 | |
7e47e6ff |
618 | unless ($no_chdir || chdir $abs_dir) { |
3fa6e24b |
619 | warn "Couldn't chdir $abs_dir: $!\n" if $^W; |
7e47e6ff |
620 | next Proc_Top_Item; |
621 | } |
719911cc |
622 | |
7e47e6ff |
623 | $name = $abs_dir . $_; # $File::Find::name |
719911cc |
624 | |
7e47e6ff |
625 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
626 | |
7e47e6ff |
627 | } |
81793b90 |
628 | |
7e47e6ff |
629 | unless ( $no_chdir ) { |
630 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { |
631 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; |
632 | unless (defined $cwd_untainted) { |
633 | die "insecure cwd in find(depth)"; |
634 | } |
635 | $check_t_cwd = 0; |
636 | } |
637 | unless (chdir $cwd_untainted) { |
638 | die "Can't cd to $cwd: $!\n"; |
639 | } |
640 | } |
81793b90 |
641 | } |
642 | } |
643 | |
644 | # API: |
645 | # $wanted |
646 | # $p_dir : "parent directory" |
647 | # $nlink : what came back from the stat |
648 | # preconditions: |
649 | # chdir (if not no_chdir) to dir |
650 | |
651 | sub _find_dir($$$) { |
652 | my ($wanted, $p_dir, $nlink) = @_; |
653 | my ($CdLvl,$Level) = (0,0); |
654 | my @Stack; |
655 | my @filenames; |
656 | my ($subcount,$sub_nlink); |
657 | my $SE= []; |
658 | my $dir_name= $p_dir; |
7e47e6ff |
659 | my $dir_pref; |
39e79f6b |
660 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
661 | my $tainted = 0; |
5fa2bf2b |
662 | my $no_nlink; |
7e47e6ff |
663 | |
664 | if ($Is_MacOS) { |
665 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface |
7e47e6ff |
666 | } |
667 | else { |
668 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
7e47e6ff |
669 | } |
81793b90 |
670 | |
671 | local ($dir, $name, $prune, *DIR); |
7e47e6ff |
672 | |
673 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { |
81793b90 |
674 | my $udir = $p_dir; |
7e47e6ff |
675 | if (( $untaint ) && (is_tainted($p_dir) )) { |
676 | ( $udir ) = $p_dir =~ m|$untaint_pat|; |
81793b90 |
677 | unless (defined $udir) { |
678 | if ($untaint_skip == 0) { |
679 | die "directory $p_dir is still tainted"; |
680 | } |
681 | else { |
682 | return; |
683 | } |
237437d0 |
684 | } |
a0d0e21e |
685 | } |
81793b90 |
686 | unless (chdir $udir) { |
3fa6e24b |
687 | warn "Can't cd to $udir: $!\n" if $^W; |
81793b90 |
688 | return; |
689 | } |
690 | } |
7e47e6ff |
691 | |
692 | # push the starting directory |
57e73c4b |
693 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 |
694 | |
7e47e6ff |
695 | if ($Is_MacOS) { |
696 | $p_dir = $dir_pref; # ensure trailing ':' |
697 | } |
698 | |
81793b90 |
699 | while (defined $SE) { |
700 | unless ($bydepth) { |
7e47e6ff |
701 | $dir= $p_dir; # $File::Find::dir |
702 | $name= $dir_name; # $File::Find::name |
703 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
81793b90 |
704 | # prune may happen here |
7e47e6ff |
705 | $prune= 0; |
706 | { &$wanted_callback }; # protect against wild "next" |
707 | next if $prune; |
81793b90 |
708 | } |
7e47e6ff |
709 | |
81793b90 |
710 | # change to that directory |
7e47e6ff |
711 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 |
712 | my $udir= $dir_rel; |
7e47e6ff |
713 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
714 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; |
81793b90 |
715 | unless (defined $udir) { |
716 | if ($untaint_skip == 0) { |
7e47e6ff |
717 | if ($Is_MacOS) { |
718 | die "directory ($p_dir) $dir_rel is still tainted"; |
719 | } |
720 | else { |
721 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; |
722 | } |
723 | } else { # $untaint_skip == 1 |
724 | next; |
81793b90 |
725 | } |
726 | } |
727 | } |
728 | unless (chdir $udir) { |
7e47e6ff |
729 | if ($Is_MacOS) { |
3fa6e24b |
730 | warn "Can't cd to ($p_dir) $udir: $!\n" if $^W; |
7e47e6ff |
731 | } |
732 | else { |
3fa6e24b |
733 | warn "Can't cd to (" . ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n" if $^W; |
7e47e6ff |
734 | } |
81793b90 |
735 | next; |
736 | } |
737 | $CdLvl++; |
738 | } |
739 | |
7e47e6ff |
740 | if ($Is_MacOS) { |
741 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
742 | } |
743 | |
744 | $dir= $dir_name; # $File::Find::dir |
81793b90 |
745 | |
746 | # Get the list of files in the current directory. |
7e47e6ff |
747 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
3fa6e24b |
748 | warn "Can't opendir($dir_name): $!\n" if $^W; |
81793b90 |
749 | next; |
750 | } |
751 | @filenames = readdir DIR; |
752 | closedir(DIR); |
719c805e |
753 | @filenames = &$pre_process(@filenames) if $pre_process; |
754 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; |
81793b90 |
755 | |
5fa2bf2b |
756 | # default: use whatever was specifid |
757 | # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back) |
758 | $no_nlink = $avoid_nlink; |
759 | # if dir has wrong nlink count, force switch to slower stat method |
760 | $no_nlink = 1 if ($nlink < 2); |
761 | |
762 | if ($nlink == 2 && !$no_nlink) { |
81793b90 |
763 | # This dir has no subdirectories. |
764 | for my $FN (@filenames) { |
7e47e6ff |
765 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
766 | |
7e47e6ff |
767 | $name = $dir_pref . $FN; # $File::Find::name |
768 | $_ = ($no_chdir ? $name : $FN); # $_ |
73396e07 |
769 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
770 | } |
771 | |
772 | } |
773 | else { |
774 | # This dir has subdirectories. |
775 | $subcount = $nlink - 2; |
776 | |
777 | for my $FN (@filenames) { |
7e47e6ff |
778 | next if $FN =~ $File::Find::skip_pattern; |
5fa2bf2b |
779 | if ($subcount > 0 || $no_nlink) { |
81793b90 |
780 | # Seen all the subdirs? |
781 | # check for directoriness. |
782 | # stat is faster for a file in the current directory |
07867069 |
783 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 |
784 | |
785 | if (-d _) { |
786 | --$subcount; |
c7b9dd21 |
787 | $FN =~ s/\.dir\z// if $Is_VMS; |
81793b90 |
788 | push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
789 | } |
790 | else { |
7e47e6ff |
791 | $name = $dir_pref . $FN; # $File::Find::name |
792 | $_= ($no_chdir ? $name : $FN); # $_ |
73396e07 |
793 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
794 | } |
795 | } |
07867069 |
796 | else { |
7e47e6ff |
797 | $name = $dir_pref . $FN; # $File::Find::name |
798 | $_= ($no_chdir ? $name : $FN); # $_ |
73396e07 |
799 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
800 | } |
801 | } |
802 | } |
17b275ff |
803 | } |
804 | continue { |
57e73c4b |
805 | while ( defined ($SE = pop @Stack) ) { |
81793b90 |
806 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
807 | if ($CdLvl > $Level && !$no_chdir) { |
7e47e6ff |
808 | my $tmp; |
809 | if ($Is_MacOS) { |
810 | $tmp = (':' x ($CdLvl-$Level)) . ':'; |
811 | } |
812 | else { |
813 | $tmp = join('/',('..') x ($CdLvl-$Level)); |
814 | } |
815 | die "Can't cd to $dir_name" . $tmp |
816 | unless chdir ($tmp); |
81793b90 |
817 | $CdLvl = $Level; |
818 | } |
7e47e6ff |
819 | |
820 | if ($Is_MacOS) { |
821 | # $pdir always has a trailing ':', except for the starting dir, |
822 | # where $dir_rel eq ':' |
823 | $dir_name = "$p_dir$dir_rel"; |
824 | $dir_pref = "$dir_name:"; |
825 | } |
826 | else { |
827 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
828 | $dir_pref = "$dir_name/"; |
829 | } |
830 | |
719c805e |
831 | if ( $nlink == -2 ) { |
7e47e6ff |
832 | $name = $dir = $p_dir; # $File::Find::name / dir |
39e79f6b |
833 | $_ = $File::Find::current_dir; |
719c805e |
834 | &$post_process; # End-of-directory processing |
7e47e6ff |
835 | } |
836 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now |
837 | $name = $dir_name; |
838 | if ($Is_MacOS) { |
839 | if ($dir_rel eq ':') { # must be the top dir, where we started |
840 | $name =~ s|:$||; # $File::Find::name |
841 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
842 | } |
843 | $dir = $p_dir; # $File::Find::dir |
844 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
845 | } |
846 | else { |
847 | if ( substr($name,-2) eq '/.' ) { |
848 | $name =~ s|/\.$||; |
849 | } |
850 | $dir = $p_dir; |
851 | $_ = ($no_chdir ? $dir_name : $dir_rel ); |
852 | if ( substr($_,-2) eq '/.' ) { |
853 | s|/\.$||; |
854 | } |
855 | } |
856 | { &$wanted_callback }; # protect against wild "next" |
857 | } |
858 | else { |
859 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
860 | last; |
861 | } |
81793b90 |
862 | } |
a0d0e21e |
863 | } |
864 | } |
865 | |
81793b90 |
866 | |
867 | # API: |
868 | # $wanted |
869 | # $dir_loc : absolute location of a dir |
870 | # $p_dir : "parent directory" |
871 | # preconditions: |
872 | # chdir (if not no_chdir) to dir |
873 | |
874 | sub _find_dir_symlnk($$$) { |
7e47e6ff |
875 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 |
876 | my @Stack; |
877 | my @filenames; |
878 | my $new_loc; |
7e47e6ff |
879 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 |
880 | my $SE = []; |
881 | my $dir_name = $p_dir; |
7e47e6ff |
882 | my $dir_pref; |
883 | my $loc_pref; |
39e79f6b |
884 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
885 | my $byd_flag; # flag for pending stack entry if $bydepth |
886 | my $tainted = 0; |
887 | my $ok = 1; |
888 | |
889 | if ($Is_MacOS) { |
890 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; |
891 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; |
7e47e6ff |
892 | } else { |
893 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
894 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); |
7e47e6ff |
895 | } |
81793b90 |
896 | |
897 | local ($dir, $name, $fullname, $prune, *DIR); |
7e47e6ff |
898 | |
899 | unless ($no_chdir) { |
900 | # untaint the topdir |
901 | if (( $untaint ) && (is_tainted($dir_loc) )) { |
902 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted |
903 | # once untainted, $updir_loc is pushed on the stack (as parent directory); |
904 | # hence, we don't need to untaint the parent directory every time we chdir |
905 | # to it later |
906 | unless (defined $updir_loc) { |
81793b90 |
907 | if ($untaint_skip == 0) { |
908 | die "directory $dir_loc is still tainted"; |
909 | } |
910 | else { |
911 | return; |
912 | } |
913 | } |
914 | } |
7e47e6ff |
915 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
916 | unless ($ok) { |
3fa6e24b |
917 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
81793b90 |
918 | return; |
919 | } |
920 | } |
921 | |
7e47e6ff |
922 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
923 | |
924 | if ($Is_MacOS) { |
925 | $p_dir = $dir_pref; # ensure trailing ':' |
926 | } |
57e73c4b |
927 | |
81793b90 |
928 | while (defined $SE) { |
929 | |
930 | unless ($bydepth) { |
7e47e6ff |
931 | # change (back) to parent directory (always untainted) |
704ea872 |
932 | unless ($no_chdir) { |
7e47e6ff |
933 | unless (chdir $updir_loc) { |
3fa6e24b |
934 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
704ea872 |
935 | next; |
936 | } |
937 | } |
7e47e6ff |
938 | $dir= $p_dir; # $File::Find::dir |
939 | $name= $dir_name; # $File::Find::name |
940 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
941 | $fullname= $dir_loc; # $File::Find::fullname |
81793b90 |
942 | # prune may happen here |
7e47e6ff |
943 | $prune= 0; |
704ea872 |
944 | lstat($_); # make sure file tests with '_' work |
7e47e6ff |
945 | { &$wanted_callback }; # protect against wild "next" |
946 | next if $prune; |
81793b90 |
947 | } |
948 | |
949 | # change to that directory |
7e47e6ff |
950 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
951 | $updir_loc = $dir_loc; |
952 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { |
953 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir |
954 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; |
955 | unless (defined $updir_loc) { |
81793b90 |
956 | if ($untaint_skip == 0) { |
957 | die "directory $dir_loc is still tainted"; |
a0d0e21e |
958 | } |
237437d0 |
959 | else { |
81793b90 |
960 | next; |
237437d0 |
961 | } |
a0d0e21e |
962 | } |
963 | } |
7e47e6ff |
964 | unless (chdir $updir_loc) { |
3fa6e24b |
965 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
81793b90 |
966 | next; |
967 | } |
968 | } |
969 | |
7e47e6ff |
970 | if ($Is_MacOS) { |
971 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
972 | } |
973 | |
974 | $dir = $dir_name; # $File::Find::dir |
81793b90 |
975 | |
976 | # Get the list of files in the current directory. |
7e47e6ff |
977 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
3fa6e24b |
978 | warn "Can't opendir($dir_loc): $!\n" if $^W; |
81793b90 |
979 | next; |
980 | } |
981 | @filenames = readdir DIR; |
982 | closedir(DIR); |
983 | |
984 | for my $FN (@filenames) { |
7e47e6ff |
985 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
986 | |
987 | # follow symbolic links / do an lstat |
07867069 |
988 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 |
989 | |
990 | # ignore if invalid symlink |
991 | next unless defined $new_loc; |
7e47e6ff |
992 | |
81793b90 |
993 | if (-d _) { |
7e47e6ff |
994 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 |
995 | } |
996 | else { |
7e47e6ff |
997 | $fullname = $new_loc; # $File::Find::fullname |
998 | $name = $dir_pref . $FN; # $File::Find::name |
999 | $_ = ($no_chdir ? $name : $FN); # $_ |
73396e07 |
1000 | { &$wanted_callback }; # protect against wild "next" |
81793b90 |
1001 | } |
1002 | } |
1003 | |
81793b90 |
1004 | } |
1005 | continue { |
57e73c4b |
1006 | while (defined($SE = pop @Stack)) { |
7e47e6ff |
1007 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
1008 | if ($Is_MacOS) { |
1009 | # $p_dir always has a trailing ':', except for the starting dir, |
1010 | # where $dir_rel eq ':' |
1011 | $dir_name = "$p_dir$dir_rel"; |
1012 | $dir_pref = "$dir_name:"; |
1013 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; |
1014 | } |
1015 | else { |
1016 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
1017 | $dir_pref = "$dir_name/"; |
1018 | $loc_pref = "$dir_loc/"; |
1019 | } |
1020 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now |
1021 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1022 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted |
3fa6e24b |
1023 | warn "Can't cd to $updir_loc: $!\n" if $^W; |
7e47e6ff |
1024 | next; |
1025 | } |
1026 | } |
1027 | $fullname = $dir_loc; # $File::Find::fullname |
1028 | $name = $dir_name; # $File::Find::name |
1029 | if ($Is_MacOS) { |
1030 | if ($dir_rel eq ':') { # must be the top dir, where we started |
1031 | $name =~ s|:$||; # $File::Find::name |
1032 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
1033 | } |
1034 | $dir = $p_dir; # $File::Find::dir |
1035 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
1036 | } |
1037 | else { |
1038 | if ( substr($name,-2) eq '/.' ) { |
1039 | $name =~ s|/\.$||; # $File::Find::name |
1040 | } |
1041 | $dir = $p_dir; # $File::Find::dir |
1042 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ |
1043 | if ( substr($_,-2) eq '/.' ) { |
1044 | s|/\.$||; |
1045 | } |
1046 | } |
1047 | |
1048 | lstat($_); # make sure file tests with '_' work |
1049 | { &$wanted_callback }; # protect against wild "next" |
1050 | } |
1051 | else { |
1052 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; |
1053 | last; |
1054 | } |
a0d0e21e |
1055 | } |
1056 | } |
1057 | } |
1058 | |
81793b90 |
1059 | |
20408e3c |
1060 | sub wrap_wanted { |
81793b90 |
1061 | my $wanted = shift; |
1062 | if ( ref($wanted) eq 'HASH' ) { |
1063 | if ( $wanted->{follow} || $wanted->{follow_fast}) { |
1064 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; |
1065 | } |
1066 | if ( $wanted->{untaint} ) { |
7e47e6ff |
1067 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 |
1068 | unless defined $wanted->{untaint_pattern}; |
1069 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; |
1070 | } |
1071 | return $wanted; |
1072 | } |
1073 | else { |
1074 | return { wanted => $wanted }; |
1075 | } |
a0d0e21e |
1076 | } |
1077 | |
20408e3c |
1078 | sub find { |
81793b90 |
1079 | my $wanted = shift; |
1080 | _find_opt(wrap_wanted($wanted), @_); |
a0d0e21e |
1081 | } |
1082 | |
55d729e4 |
1083 | sub finddepth { |
81793b90 |
1084 | my $wanted = wrap_wanted(shift); |
1085 | $wanted->{bydepth} = 1; |
1086 | _find_opt($wanted, @_); |
20408e3c |
1087 | } |
6280b799 |
1088 | |
7e47e6ff |
1089 | # default |
1090 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; |
1091 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; |
1092 | |
6280b799 |
1093 | # These are hard-coded for now, but may move to hint files. |
10eba763 |
1094 | if ($^O eq 'VMS') { |
81793b90 |
1095 | $Is_VMS = 1; |
7e47e6ff |
1096 | $File::Find::dont_use_nlink = 1; |
1097 | } |
1098 | elsif ($^O eq 'MacOS') { |
1099 | $Is_MacOS = 1; |
1100 | $File::Find::dont_use_nlink = 1; |
1101 | $File::Find::skip_pattern = qr/^Icon\015\z/; |
1102 | $File::Find::untaint_pattern = qr|^(.+)$|; |
748a9306 |
1103 | } |
1104 | |
7e47e6ff |
1105 | # this _should_ work properly on all platforms |
1106 | # where File::Find can be expected to work |
1107 | $File::Find::current_dir = File::Spec->curdir || '.'; |
1108 | |
81793b90 |
1109 | $File::Find::dont_use_nlink = 1 |
497711e7 |
1110 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
2986a63f |
1111 | $^O eq 'cygwin' || $^O eq 'epoc' || $^O eq 'NetWare'; |
6280b799 |
1112 | |
20408e3c |
1113 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1114 | # report the number of links in a directory as an indication |
1115 | # of the number of files. |
1116 | # See, e.g. hints/machten.sh for MachTen 2.2. |
81793b90 |
1117 | unless ($File::Find::dont_use_nlink) { |
1118 | require Config; |
1119 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); |
20408e3c |
1120 | } |
1121 | |
7e47e6ff |
1122 | # We need a function that checks if a scalar is tainted. Either use the |
1123 | # Scalar::Util module's tainted() function or our (slower) pure Perl |
1124 | # fallback is_tainted_pp() |
1125 | { |
1126 | local $@; |
1127 | eval { require Scalar::Util }; |
1128 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; |
1129 | } |
1130 | |
a0d0e21e |
1131 | 1; |