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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; |
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6 | our $VERSION = '1.06'; |
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7 | require Exporter; |
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8 | require Cwd; |
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9 | |
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10 | # |
11 | # Modified to ensure sub-directory traversal order is not inverded by stack |
12 | # push and pops. That is remains in the same order as in the directory file, |
13 | # or user pre-processing (EG:sorted). |
14 | # |
15 | |
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16 | =head1 NAME |
17 | |
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18 | File::Find - Traverse a directory tree. |
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19 | |
20 | =head1 SYNOPSIS |
21 | |
22 | use File::Find; |
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23 | find(\&wanted, @directories_to_search); |
f06db76b |
24 | sub wanted { ... } |
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25 | |
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26 | use File::Find; |
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27 | finddepth(\&wanted, @directories_to_search); |
f06db76b |
28 | sub wanted { ... } |
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29 | |
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30 | use File::Find; |
31 | find({ wanted => \&process, follow => 1 }, '.'); |
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32 | |
33 | =head1 DESCRIPTION |
34 | |
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35 | These are functions for searching through directory trees doing work |
36 | on each file found similar to the Unix I<find> command. File::Find |
37 | exports two functions, C<find> and C<finddepth>. They work similarly |
38 | but have subtle differences. |
39 | |
40 | =over 4 |
41 | |
42 | =item B<find> |
43 | |
44 | find(\&wanted, @directories); |
45 | find(\%options, @directories); |
46 | |
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47 | C<find()> does a breadth-first search over the given C<@directories> in the |
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48 | order they are given. In essence, it works from the top down. |
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49 | |
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50 | For each file or directory found, the C<&wanted> subroutine is called, |
51 | with the return code ignored. (See below for details on how to use |
52 | the C<&wanted> function). Additionally, for each directory found, |
53 | it will go into that directory and continue the search. |
abfdd623 |
54 | |
55 | =item B<finddepth> |
56 | |
57 | finddepth(\&wanted, @directories); |
58 | finddepth(\%options, @directories); |
59 | |
95e23d19 |
60 | C<finddepth()> works just like C<find()> except it does a depth-first search. |
abfdd623 |
61 | It works from the bottom of the directory tree up. |
62 | |
63 | =back |
64 | |
65 | =head2 %options |
66 | |
95e23d19 |
67 | The first argument to C<find()> is either a code reference to your |
68 | C<&wanted> function, or a hash reference describing the operations |
69 | to be performed for each file. The |
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70 | code reference is described in L<The wanted function> below. |
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71 | |
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72 | Here are the possible keys for the hash: |
73 | |
74 | =over 3 |
75 | |
76 | =item C<wanted> |
77 | |
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78 | The value should be a code reference. This code reference is |
79 | described in L<The wanted function> below. |
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80 | |
81 | =item C<bydepth> |
82 | |
83 | Reports the name of a directory only AFTER all its entries |
95e23d19 |
84 | have been reported. Entry point C<finddepth()> is a shortcut for |
85 | specifying C<<{ bydepth => 1 }>> in the first argument of C<find()>. |
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86 | |
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87 | =item C<preprocess> |
88 | |
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89 | The value should be a code reference. This code reference is used to |
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90 | preprocess the current directory. The name of the currently processed |
91 | directory is in C<$File::Find::dir>. Your preprocessing function is |
92 | called after C<readdir()>, but before the loop that calls the C<wanted()> |
7e47e6ff |
93 | function. It is called with a list of strings (actually file/directory |
94 | names) and is expected to return a list of strings. The code can be |
95 | used to sort the file/directory names alphabetically, numerically, |
96 | or to filter out directory entries based on their name alone. When |
97 | I<follow> or I<follow_fast> are in effect, C<preprocess> is a no-op. |
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98 | |
99 | =item C<postprocess> |
100 | |
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101 | The value should be a code reference. It is invoked just before leaving |
102 | the currently processed directory. It is called in void context with no |
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103 | arguments. The name of the current directory is in C<$File::Find::dir>. This |
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104 | hook is handy for summarizing a directory, such as calculating its disk |
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105 | usage. When I<follow> or I<follow_fast> are in effect, C<postprocess> is a |
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106 | no-op. |
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107 | |
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108 | =item C<follow> |
109 | |
110 | Causes symbolic links to be followed. Since directory trees with symbolic |
111 | links (followed) may contain files more than once and may even have |
112 | cycles, a hash has to be built up with an entry for each file. |
113 | This might be expensive both in space and time for a large |
114 | directory tree. See I<follow_fast> and I<follow_skip> below. |
115 | If either I<follow> or I<follow_fast> is in effect: |
116 | |
117 | =over 6 |
118 | |
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119 | =item * |
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120 | |
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121 | It is guaranteed that an I<lstat> has been called before the user's |
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122 | C<wanted()> function is called. This enables fast file checks involving S< _>. |
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123 | |
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124 | =item * |
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125 | |
126 | There is a variable C<$File::Find::fullname> which holds the absolute |
127 | pathname of the file with all symbolic links resolved |
128 | |
129 | =back |
130 | |
131 | =item C<follow_fast> |
132 | |
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133 | This is similar to I<follow> except that it may report some files more |
134 | than once. It does detect cycles, however. Since only symbolic links |
135 | have to be hashed, this is much cheaper both in space and time. If |
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136 | processing a file more than once (by the user's C<wanted()> function) |
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137 | is worse than just taking time, the option I<follow> should be used. |
138 | |
139 | =item C<follow_skip> |
140 | |
141 | C<follow_skip==1>, which is the default, causes all files which are |
142 | neither directories nor symbolic links to be ignored if they are about |
143 | to be processed a second time. If a directory or a symbolic link |
144 | are about to be processed a second time, File::Find dies. |
95e23d19 |
145 | |
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146 | C<follow_skip==0> causes File::Find to die if any file is about to be |
147 | processed a second time. |
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148 | |
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149 | C<follow_skip==2> causes File::Find to ignore any duplicate files and |
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150 | directories but to proceed normally otherwise. |
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151 | |
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152 | =item C<dangling_symlinks> |
153 | |
154 | If true and a code reference, will be called with the symbolic link |
155 | name and the directory it lives in as arguments. Otherwise, if true |
156 | and warnings are on, warning "symbolic_link_name is a dangling |
157 | symbolic link\n" will be issued. If false, the dangling symbolic link |
158 | will be silently ignored. |
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159 | |
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160 | =item C<no_chdir> |
161 | |
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162 | Does not C<chdir()> to each directory as it recurses. The C<wanted()> |
81793b90 |
163 | function will need to be aware of this, of course. In this case, |
164 | C<$_> will be the same as C<$File::Find::name>. |
165 | |
166 | =item C<untaint> |
167 | |
168 | If find is used in taint-mode (-T command line switch or if EUID != UID |
169 | or if EGID != GID) then internally directory names have to be untainted |
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170 | before they can be chdir'ed to. Therefore they are checked against a regular |
171 | expression I<untaint_pattern>. Note that all names passed to the user's |
172 | I<wanted()> function are still tainted. If this option is used while |
173 | not in taint-mode, C<untaint> is a no-op. |
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174 | |
175 | =item C<untaint_pattern> |
176 | |
177 | See above. This should be set using the C<qr> quoting operator. |
178 | The default is set to C<qr|^([-+@\w./]+)$|>. |
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179 | Note that the parentheses are vital. |
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180 | |
181 | =item C<untaint_skip> |
182 | |
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183 | If set, a directory which fails the I<untaint_pattern> is skipped, |
184 | including all its sub-directories. The default is to 'die' in such a case. |
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185 | |
186 | =back |
187 | |
abfdd623 |
188 | =head2 The wanted function |
189 | |
95e23d19 |
190 | The C<wanted()> function does whatever verifications you want on |
191 | each file and directory. Note that despite its name, the C<wanted()> |
192 | function is a generic callback function, and does B<not> tell |
193 | File::Find if a file is "wanted" or not. In fact, its return value |
194 | is ignored. |
195 | |
196 | The wanted function takes no arguments but rather does its work |
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197 | through a collection of variables. |
198 | |
199 | =over 4 |
200 | |
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201 | =item C<$File::Find::dir> is the current directory name, |
abfdd623 |
202 | |
203 | =item C<$_> is the current filename within that directory |
204 | |
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205 | =item C<$File::Find::name> is the complete pathname to the file. |
abfdd623 |
206 | |
207 | =back |
208 | |
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209 | Don't modify these variables. |
210 | |
95e23d19 |
211 | For example, when examining the file F</some/path/foo.ext> you will have: |
abfdd623 |
212 | |
213 | $File::Find::dir = /some/path/ |
214 | $_ = foo.ext |
215 | $File::Find::name = /some/path/foo.ext |
216 | |
217 | You are chdir()'d toC<$File::Find::dir> when the function is called, |
218 | unless C<no_chdir> was specified. Note that when changing to |
219 | directories is in effect the root directory (F</>) is a somewhat |
220 | special case inasmuch as the concatenation of C<$File::Find::dir>, |
221 | C<'/'> and C<$_> is not literally equal to C<$File::Find::name>. The |
222 | table below summarizes all variants: |
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223 | |
224 | $File::Find::name $File::Find::dir $_ |
225 | default / / . |
226 | no_chdir=>0 /etc / etc |
227 | /etc/x /etc x |
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228 | |
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229 | no_chdir=>1 / / / |
230 | /etc / /etc |
231 | /etc/x /etc /etc/x |
232 | |
233 | |
234 | When <follow> or <follow_fast> are in effect, there is |
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235 | also a C<$File::Find::fullname>. The function may set |
236 | C<$File::Find::prune> to prune the tree unless C<bydepth> was |
237 | specified. Unless C<follow> or C<follow_fast> is specified, for |
238 | compatibility reasons (find.pl, find2perl) there are in addition the |
239 | following globals available: C<$File::Find::topdir>, |
240 | C<$File::Find::topdev>, C<$File::Find::topino>, |
e7b91b67 |
241 | C<$File::Find::topmode> and C<$File::Find::topnlink>. |
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242 | |
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243 | This library is useful for the C<find2perl> tool, which when fed, |
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244 | |
245 | find2perl / -name .nfs\* -mtime +7 \ |
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246 | -exec rm -f {} \; -o -fstype nfs -prune |
f06db76b |
247 | |
248 | produces something like: |
249 | |
250 | sub wanted { |
c7b9dd21 |
251 | /^\.nfs.*\z/s && |
81793b90 |
252 | (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_)) && |
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253 | int(-M _) > 7 && |
254 | unlink($_) |
255 | || |
81793b90 |
256 | ($nlink || (($dev, $ino, $mode, $nlink, $uid, $gid) = lstat($_))) && |
f06db76b |
257 | $dev < 0 && |
6280b799 |
258 | ($File::Find::prune = 1); |
f06db76b |
259 | } |
260 | |
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261 | Notice the C<_> in the above C<int(-M _)>: the C<_> is a magical |
262 | filehandle that caches the information from the preceding |
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263 | C<stat()>, C<lstat()>, or filetest. |
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264 | |
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265 | Here's another interesting wanted function. It will find all symbolic |
266 | links that don't resolve: |
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267 | |
268 | sub wanted { |
81793b90 |
269 | -l && !-e && print "bogus link: $File::Find::name\n"; |
237437d0 |
270 | } |
f06db76b |
271 | |
81793b90 |
272 | See also the script C<pfind> on CPAN for a nice application of this |
273 | module. |
274 | |
cd68ec93 |
275 | =head1 WARNINGS |
276 | |
277 | If you run your program with the C<-w> switch, or if you use the |
278 | C<warnings> pragma, File::Find will report warnings for several weird |
279 | situations. You can disable these warnings by putting the statement |
280 | |
281 | no warnings 'File::Find'; |
282 | |
283 | in the appropriate scope. See L<perllexwarn> for more info about lexical |
284 | warnings. |
285 | |
81793b90 |
286 | =head1 CAVEAT |
287 | |
5fa2bf2b |
288 | =over 2 |
289 | |
290 | =item $dont_use_nlink |
291 | |
292 | You can set the variable C<$File::Find::dont_use_nlink> to 1, if you want to |
6cf3b067 |
293 | force File::Find to always stat directories. This was used for file systems |
294 | that do not have an C<nlink> count matching the number of sub-directories. |
295 | Examples are ISO-9660 (CD-ROM), AFS, HPFS (OS/2 file system), FAT (DOS file |
296 | system) and a couple of others. |
5fa2bf2b |
297 | |
6cf3b067 |
298 | You shouldn't need to set this variable, since File::Find should now detect |
299 | such file systems on-the-fly and switch itself to using stat. This works even |
300 | for parts of your file system, like a mounted CD-ROM. |
5fa2bf2b |
301 | |
6cf3b067 |
302 | If you do set C<$File::Find::dont_use_nlink> to 1, you will notice slow-downs. |
5fa2bf2b |
303 | |
304 | =item symlinks |
305 | |
f10e1564 |
306 | Be aware that the option to follow symbolic links can be dangerous. |
81793b90 |
307 | Depending on the structure of the directory tree (including symbolic |
308 | links to directories) you might traverse a given (physical) directory |
309 | more than once (only if C<follow_fast> is in effect). |
310 | Furthermore, deleting or changing files in a symbolically linked directory |
311 | might cause very unpleasant surprises, since you delete or change files |
312 | in an unknown directory. |
0530a6c4 |
313 | |
5fa2bf2b |
314 | =back |
315 | |
7e47e6ff |
316 | =head1 NOTES |
317 | |
318 | =over 4 |
319 | |
320 | =item * |
321 | |
322 | Mac OS (Classic) users should note a few differences: |
323 | |
324 | =over 4 |
325 | |
326 | =item * |
327 | |
328 | The path separator is ':', not '/', and the current directory is denoted |
329 | as ':', not '.'. You should be careful about specifying relative pathnames. |
330 | While a full path always begins with a volume name, a relative pathname |
331 | should always begin with a ':'. If specifying a volume name only, a |
332 | trailing ':' is required. |
333 | |
334 | =item * |
335 | |
336 | C<$File::Find::dir> is guaranteed to end with a ':'. If C<$_> |
337 | contains the name of a directory, that name may or may not end with a |
338 | ':'. Likewise, C<$File::Find::name>, which contains the complete |
339 | pathname to that directory, and C<$File::Find::fullname>, which holds |
340 | the absolute pathname of that directory with all symbolic links resolved, |
341 | may or may not end with a ':'. |
342 | |
343 | =item * |
344 | |
345 | The default C<untaint_pattern> (see above) on Mac OS is set to |
346 | C<qr|^(.+)$|>. Note that the parentheses are vital. |
347 | |
348 | =item * |
349 | |
350 | The invisible system file "Icon\015" is ignored. While this file may |
351 | appear in every directory, there are some more invisible system files |
352 | on every volume, which are all located at the volume root level (i.e. |
353 | "MacintoshHD:"). These system files are B<not> excluded automatically. |
354 | Your filter may use the following code to recognize invisible files or |
355 | directories (requires Mac::Files): |
356 | |
357 | use Mac::Files; |
358 | |
359 | # invisible() -- returns 1 if file/directory is invisible, |
1cffc1dd |
360 | # 0 if it's visible or undef if an error occurred |
7e47e6ff |
361 | |
362 | sub invisible($) { |
363 | my $file = shift; |
364 | my ($fileCat, $fileInfo); |
365 | my $invisible_flag = 1 << 14; |
366 | |
367 | if ( $fileCat = FSpGetCatInfo($file) ) { |
368 | if ($fileInfo = $fileCat->ioFlFndrInfo() ) { |
369 | return (($fileInfo->fdFlags & $invisible_flag) && 1); |
370 | } |
371 | } |
372 | return undef; |
373 | } |
374 | |
375 | Generally, invisible files are system files, unless an odd application |
376 | decides to use invisible files for its own purposes. To distinguish |
377 | such files from system files, you have to look at the B<type> and B<creator> |
378 | file attributes. The MacPerl built-in functions C<GetFileInfo(FILE)> and |
379 | C<SetFileInfo(CREATOR, TYPE, FILES)> offer access to these attributes |
380 | (see MacPerl.pm for details). |
381 | |
382 | Files that appear on the desktop actually reside in an (hidden) directory |
383 | named "Desktop Folder" on the particular disk volume. Note that, although |
384 | all desktop files appear to be on the same "virtual" desktop, each disk |
385 | volume actually maintains its own "Desktop Folder" directory. |
386 | |
387 | =back |
388 | |
389 | =back |
0530a6c4 |
390 | |
a85af077 |
391 | =head1 HISTORY |
392 | |
393 | File::Find used to produce incorrect results if called recursively. |
394 | During the development of perl 5.8 this bug was fixed. |
395 | The first fixed version of File::Find was 1.01. |
396 | |
f06db76b |
397 | =cut |
398 | |
b75c8c73 |
399 | our @ISA = qw(Exporter); |
400 | our @EXPORT = qw(find finddepth); |
6280b799 |
401 | |
a0d0e21e |
402 | |
81793b90 |
403 | use strict; |
404 | my $Is_VMS; |
7e47e6ff |
405 | my $Is_MacOS; |
81793b90 |
406 | |
407 | require File::Basename; |
7e47e6ff |
408 | require File::Spec; |
81793b90 |
409 | |
9f826d6a |
410 | # Should ideally be my() not our() but local() currently |
411 | # refuses to operate on lexicals |
412 | |
413 | our %SLnkSeen; |
414 | our ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
719c805e |
415 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
416 | $pre_process, $post_process, $dangling_symlinks); |
81793b90 |
417 | |
418 | sub contract_name { |
419 | my ($cdir,$fn) = @_; |
420 | |
7e47e6ff |
421 | return substr($cdir,0,rindex($cdir,'/')) if $fn eq $File::Find::current_dir; |
81793b90 |
422 | |
423 | $cdir = substr($cdir,0,rindex($cdir,'/')+1); |
424 | |
425 | $fn =~ s|^\./||; |
426 | |
427 | my $abs_name= $cdir . $fn; |
428 | |
429 | if (substr($fn,0,3) eq '../') { |
fecbda2b |
430 | 1 while $abs_name =~ s!/[^/]*/\.\./!/!; |
81793b90 |
431 | } |
432 | |
433 | return $abs_name; |
434 | } |
435 | |
7e47e6ff |
436 | # return the absolute name of a directory or file |
437 | sub contract_name_Mac { |
438 | my ($cdir,$fn) = @_; |
439 | my $abs_name; |
440 | |
441 | if ($fn =~ /^(:+)(.*)$/) { # valid pathname starting with a ':' |
442 | |
443 | my $colon_count = length ($1); |
444 | if ($colon_count == 1) { |
445 | $abs_name = $cdir . $2; |
446 | return $abs_name; |
447 | } |
448 | else { |
449 | # need to move up the tree, but |
450 | # only if it's not a volume name |
451 | for (my $i=1; $i<$colon_count; $i++) { |
452 | unless ($cdir =~ /^[^:]+:$/) { # volume name |
453 | $cdir =~ s/[^:]+:$//; |
454 | } |
455 | else { |
456 | return undef; |
457 | } |
458 | } |
459 | $abs_name = $cdir . $2; |
460 | return $abs_name; |
461 | } |
462 | |
463 | } |
464 | else { |
465 | |
466 | # $fn may be a valid path to a directory or file or (dangling) |
467 | # symlink, without a leading ':' |
468 | if ( (-e $fn) || (-l $fn) ) { |
469 | if ($fn =~ /^[^:]+:/) { # a volume name like DataHD:* |
470 | return $fn; # $fn is already an absolute path |
471 | } |
472 | else { |
473 | $abs_name = $cdir . $fn; |
474 | return $abs_name; |
475 | } |
476 | } |
477 | else { # argh!, $fn is not a valid directory/file |
478 | return undef; |
479 | } |
480 | } |
481 | } |
81793b90 |
482 | |
483 | sub PathCombine($$) { |
484 | my ($Base,$Name) = @_; |
485 | my $AbsName; |
486 | |
7e47e6ff |
487 | if ($Is_MacOS) { |
488 | # $Name is the resolved symlink (always a full path on MacOS), |
489 | # i.e. there's no need to call contract_name_Mac() |
490 | $AbsName = $Name; |
491 | |
492 | # (simple) check for recursion |
493 | if ( ( $Base =~ /^$AbsName/) && (-d $AbsName) ) { # recursion |
494 | return undef; |
495 | } |
81793b90 |
496 | } |
497 | else { |
7e47e6ff |
498 | if (substr($Name,0,1) eq '/') { |
499 | $AbsName= $Name; |
500 | } |
501 | else { |
502 | $AbsName= contract_name($Base,$Name); |
503 | } |
81793b90 |
504 | |
7e47e6ff |
505 | # (simple) check for recursion |
506 | my $newlen= length($AbsName); |
507 | if ($newlen <= length($Base)) { |
508 | if (($newlen == length($Base) || substr($Base,$newlen,1) eq '/') |
509 | && $AbsName eq substr($Base,0,$newlen)) |
510 | { |
511 | return undef; |
512 | } |
81793b90 |
513 | } |
514 | } |
515 | return $AbsName; |
516 | } |
517 | |
518 | sub Follow_SymLink($) { |
519 | my ($AbsName) = @_; |
520 | |
521 | my ($NewName,$DEV, $INO); |
522 | ($DEV, $INO)= lstat $AbsName; |
523 | |
524 | while (-l _) { |
525 | if ($SLnkSeen{$DEV, $INO}++) { |
526 | if ($follow_skip < 2) { |
527 | die "$AbsName is encountered a second time"; |
a0d0e21e |
528 | } |
529 | else { |
81793b90 |
530 | return undef; |
a0d0e21e |
531 | } |
532 | } |
81793b90 |
533 | $NewName= PathCombine($AbsName, readlink($AbsName)); |
534 | unless(defined $NewName) { |
535 | if ($follow_skip < 2) { |
536 | die "$AbsName is a recursive symbolic link"; |
537 | } |
538 | else { |
539 | return undef; |
a0d0e21e |
540 | } |
81793b90 |
541 | } |
542 | else { |
543 | $AbsName= $NewName; |
544 | } |
545 | ($DEV, $INO) = lstat($AbsName); |
546 | return undef unless defined $DEV; # dangling symbolic link |
547 | } |
548 | |
cd68ec93 |
549 | if ($full_check && defined $DEV && $SLnkSeen{$DEV, $INO}++) { |
7e47e6ff |
550 | if ( ($follow_skip < 1) || ((-d _) && ($follow_skip < 2)) ) { |
81793b90 |
551 | die "$AbsName encountered a second time"; |
552 | } |
553 | else { |
554 | return undef; |
555 | } |
556 | } |
557 | |
558 | return $AbsName; |
559 | } |
560 | |
17f410f9 |
561 | our($dir, $name, $fullname, $prune); |
81793b90 |
562 | sub _find_dir_symlnk($$$); |
563 | sub _find_dir($$$); |
564 | |
7e47e6ff |
565 | # check whether or not a scalar variable is tainted |
566 | # (code straight from the Camel, 3rd ed., page 561) |
567 | sub is_tainted_pp { |
568 | my $arg = shift; |
569 | my $nada = substr($arg, 0, 0); # zero-length |
570 | local $@; |
571 | eval { eval "# $nada" }; |
572 | return length($@) != 0; |
573 | } |
574 | |
81793b90 |
575 | sub _find_opt { |
576 | my $wanted = shift; |
577 | die "invalid top directory" unless defined $_[0]; |
578 | |
9f826d6a |
579 | # This function must local()ize everything because callbacks may |
580 | # call find() or finddepth() |
581 | |
582 | local %SLnkSeen; |
583 | local ($wanted_callback, $avoid_nlink, $bydepth, $no_chdir, $follow, |
584 | $follow_skip, $full_check, $untaint, $untaint_skip, $untaint_pat, |
80e52b73 |
585 | $pre_process, $post_process, $dangling_symlinks); |
17ab9c14 |
586 | local($dir, $name, $fullname, $prune, $_); |
9f826d6a |
587 | |
a0c9c202 |
588 | my $cwd = $wanted->{bydepth} ? Cwd::fastcwd() : Cwd::getcwd(); |
80e52b73 |
589 | my $cwd_untainted = $cwd; |
590 | my $check_t_cwd = 1; |
591 | $wanted_callback = $wanted->{wanted}; |
592 | $bydepth = $wanted->{bydepth}; |
593 | $pre_process = $wanted->{preprocess}; |
594 | $post_process = $wanted->{postprocess}; |
595 | $no_chdir = $wanted->{no_chdir}; |
596 | $full_check = $wanted->{follow}; |
597 | $follow = $full_check || $wanted->{follow_fast}; |
598 | $follow_skip = $wanted->{follow_skip}; |
599 | $untaint = $wanted->{untaint}; |
600 | $untaint_pat = $wanted->{untaint_pattern}; |
601 | $untaint_skip = $wanted->{untaint_skip}; |
602 | $dangling_symlinks = $wanted->{dangling_symlinks}; |
81793b90 |
603 | |
1cffc1dd |
604 | # for compatibility reasons (find.pl, find2perl) |
9f826d6a |
605 | local our ($topdir, $topdev, $topino, $topmode, $topnlink); |
81793b90 |
606 | |
607 | # a symbolic link to a directory doesn't increase the link count |
608 | $avoid_nlink = $follow || $File::Find::dont_use_nlink; |
609 | |
e7b91b67 |
610 | my ($abs_dir, $Is_Dir); |
81793b90 |
611 | |
612 | Proc_Top_Item: |
613 | foreach my $TOP (@_) { |
7e47e6ff |
614 | my $top_item = $TOP; |
615 | |
616 | if ($Is_MacOS) { |
617 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
618 | $top_item = ":$top_item" |
3fa6e24b |
619 | if ( (-d _) && ( $top_item !~ /:/ ) ); |
7e47e6ff |
620 | } |
621 | else { |
622 | $top_item =~ s|/\z|| unless $top_item eq '/'; |
623 | ($topdev,$topino,$topmode,$topnlink) = $follow ? stat $top_item : lstat $top_item; |
624 | } |
625 | |
626 | $Is_Dir= 0; |
627 | |
628 | if ($follow) { |
629 | |
630 | if ($Is_MacOS) { |
631 | $cwd = "$cwd:" unless ($cwd =~ /:$/); # for safety |
632 | |
633 | if ($top_item eq $File::Find::current_dir) { |
634 | $abs_dir = $cwd; |
635 | } |
636 | else { |
637 | $abs_dir = contract_name_Mac($cwd, $top_item); |
638 | unless (defined $abs_dir) { |
cd68ec93 |
639 | warnings::warnif "Can't determine absolute path for $top_item (No such file or directory)\n"; |
7e47e6ff |
640 | next Proc_Top_Item; |
641 | } |
642 | } |
643 | |
644 | } |
645 | else { |
646 | if (substr($top_item,0,1) eq '/') { |
647 | $abs_dir = $top_item; |
648 | } |
649 | elsif ($top_item eq $File::Find::current_dir) { |
650 | $abs_dir = $cwd; |
651 | } |
652 | else { # care about any ../ |
653 | $abs_dir = contract_name("$cwd/",$top_item); |
654 | } |
655 | } |
656 | $abs_dir= Follow_SymLink($abs_dir); |
657 | unless (defined $abs_dir) { |
80e52b73 |
658 | if ($dangling_symlinks) { |
659 | if (ref $dangling_symlinks eq 'CODE') { |
660 | $dangling_symlinks->($top_item, $cwd); |
661 | } else { |
cd68ec93 |
662 | warnings::warnif "$top_item is a dangling symbolic link\n"; |
80e52b73 |
663 | } |
664 | } |
81793b90 |
665 | next Proc_Top_Item; |
7e47e6ff |
666 | } |
667 | |
668 | if (-d _) { |
81793b90 |
669 | _find_dir_symlnk($wanted, $abs_dir, $top_item); |
670 | $Is_Dir= 1; |
7e47e6ff |
671 | } |
672 | } |
81793b90 |
673 | else { # no follow |
7e47e6ff |
674 | $topdir = $top_item; |
675 | unless (defined $topnlink) { |
cd68ec93 |
676 | warnings::warnif "Can't stat $top_item: $!\n"; |
7e47e6ff |
677 | next Proc_Top_Item; |
678 | } |
679 | if (-d _) { |
544ff7a7 |
680 | $top_item =~ s/\.dir\z//i if $Is_VMS; |
e7b91b67 |
681 | _find_dir($wanted, $top_item, $topnlink); |
81793b90 |
682 | $Is_Dir= 1; |
7e47e6ff |
683 | } |
237437d0 |
684 | else { |
81793b90 |
685 | $abs_dir= $top_item; |
7e47e6ff |
686 | } |
687 | } |
81793b90 |
688 | |
7e47e6ff |
689 | unless ($Is_Dir) { |
81793b90 |
690 | unless (($_,$dir) = File::Basename::fileparse($abs_dir)) { |
7e47e6ff |
691 | if ($Is_MacOS) { |
692 | ($dir,$_) = (':', $top_item); # $File::Find::dir, $_ |
693 | } |
694 | else { |
695 | ($dir,$_) = ('./', $top_item); |
696 | } |
81793b90 |
697 | } |
698 | |
7e47e6ff |
699 | $abs_dir = $dir; |
700 | if (( $untaint ) && (is_tainted($dir) )) { |
701 | ( $abs_dir ) = $dir =~ m|$untaint_pat|; |
81793b90 |
702 | unless (defined $abs_dir) { |
703 | if ($untaint_skip == 0) { |
7e47e6ff |
704 | die "directory $dir is still tainted"; |
81793b90 |
705 | } |
706 | else { |
707 | next Proc_Top_Item; |
708 | } |
709 | } |
7e47e6ff |
710 | } |
81793b90 |
711 | |
7e47e6ff |
712 | unless ($no_chdir || chdir $abs_dir) { |
cd68ec93 |
713 | warnings::warnif "Couldn't chdir $abs_dir: $!\n"; |
7e47e6ff |
714 | next Proc_Top_Item; |
715 | } |
719911cc |
716 | |
7e47e6ff |
717 | $name = $abs_dir . $_; # $File::Find::name |
3bb6d3e5 |
718 | $_ = $name if $no_chdir; |
719911cc |
719 | |
abfdd623 |
720 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
721 | |
7e47e6ff |
722 | } |
81793b90 |
723 | |
7e47e6ff |
724 | unless ( $no_chdir ) { |
725 | if ( ($check_t_cwd) && (($untaint) && (is_tainted($cwd) )) ) { |
726 | ( $cwd_untainted ) = $cwd =~ m|$untaint_pat|; |
727 | unless (defined $cwd_untainted) { |
728 | die "insecure cwd in find(depth)"; |
729 | } |
730 | $check_t_cwd = 0; |
731 | } |
732 | unless (chdir $cwd_untainted) { |
733 | die "Can't cd to $cwd: $!\n"; |
734 | } |
735 | } |
81793b90 |
736 | } |
737 | } |
738 | |
739 | # API: |
740 | # $wanted |
741 | # $p_dir : "parent directory" |
742 | # $nlink : what came back from the stat |
743 | # preconditions: |
744 | # chdir (if not no_chdir) to dir |
745 | |
746 | sub _find_dir($$$) { |
747 | my ($wanted, $p_dir, $nlink) = @_; |
748 | my ($CdLvl,$Level) = (0,0); |
749 | my @Stack; |
750 | my @filenames; |
751 | my ($subcount,$sub_nlink); |
752 | my $SE= []; |
753 | my $dir_name= $p_dir; |
7e47e6ff |
754 | my $dir_pref; |
39e79f6b |
755 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
756 | my $tainted = 0; |
5fa2bf2b |
757 | my $no_nlink; |
7e47e6ff |
758 | |
759 | if ($Is_MacOS) { |
760 | $dir_pref= ($p_dir =~ /:$/) ? $p_dir : "$p_dir:"; # preface |
7e47e6ff |
761 | } |
762 | else { |
763 | $dir_pref= ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
7e47e6ff |
764 | } |
81793b90 |
765 | |
766 | local ($dir, $name, $prune, *DIR); |
7e47e6ff |
767 | |
768 | unless ( $no_chdir || ($p_dir eq $File::Find::current_dir)) { |
81793b90 |
769 | my $udir = $p_dir; |
7e47e6ff |
770 | if (( $untaint ) && (is_tainted($p_dir) )) { |
771 | ( $udir ) = $p_dir =~ m|$untaint_pat|; |
81793b90 |
772 | unless (defined $udir) { |
773 | if ($untaint_skip == 0) { |
774 | die "directory $p_dir is still tainted"; |
775 | } |
776 | else { |
777 | return; |
778 | } |
237437d0 |
779 | } |
a0d0e21e |
780 | } |
8d8eebbf |
781 | unless (chdir ($Is_VMS && $udir !~ /[\/\[<]+/ ? "./$udir" : $udir)) { |
cd68ec93 |
782 | warnings::warnif "Can't cd to $udir: $!\n"; |
81793b90 |
783 | return; |
784 | } |
785 | } |
7e47e6ff |
786 | |
787 | # push the starting directory |
57e73c4b |
788 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
81793b90 |
789 | |
7e47e6ff |
790 | if ($Is_MacOS) { |
791 | $p_dir = $dir_pref; # ensure trailing ':' |
792 | } |
793 | |
81793b90 |
794 | while (defined $SE) { |
795 | unless ($bydepth) { |
7e47e6ff |
796 | $dir= $p_dir; # $File::Find::dir |
797 | $name= $dir_name; # $File::Find::name |
798 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
81793b90 |
799 | # prune may happen here |
7e47e6ff |
800 | $prune= 0; |
abfdd623 |
801 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
802 | next if $prune; |
81793b90 |
803 | } |
7e47e6ff |
804 | |
81793b90 |
805 | # change to that directory |
7e47e6ff |
806 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
81793b90 |
807 | my $udir= $dir_rel; |
7e47e6ff |
808 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_rel) )) ) { |
809 | ( $udir ) = $dir_rel =~ m|$untaint_pat|; |
81793b90 |
810 | unless (defined $udir) { |
811 | if ($untaint_skip == 0) { |
7e47e6ff |
812 | if ($Is_MacOS) { |
813 | die "directory ($p_dir) $dir_rel is still tainted"; |
814 | } |
815 | else { |
816 | die "directory (" . ($p_dir ne '/' ? $p_dir : '') . "/) $dir_rel is still tainted"; |
817 | } |
818 | } else { # $untaint_skip == 1 |
819 | next; |
81793b90 |
820 | } |
821 | } |
822 | } |
8d8eebbf |
823 | unless (chdir ($Is_VMS && $udir !~ /[\/\[<]+/ ? "./$udir" : $udir)) { |
7e47e6ff |
824 | if ($Is_MacOS) { |
cd68ec93 |
825 | warnings::warnif "Can't cd to ($p_dir) $udir: $!\n"; |
7e47e6ff |
826 | } |
827 | else { |
cd68ec93 |
828 | warnings::warnif "Can't cd to (" . |
829 | ($p_dir ne '/' ? $p_dir : '') . "/) $udir: $!\n"; |
7e47e6ff |
830 | } |
81793b90 |
831 | next; |
832 | } |
833 | $CdLvl++; |
834 | } |
835 | |
7e47e6ff |
836 | if ($Is_MacOS) { |
837 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
838 | } |
839 | |
840 | $dir= $dir_name; # $File::Find::dir |
81793b90 |
841 | |
842 | # Get the list of files in the current directory. |
7e47e6ff |
843 | unless (opendir DIR, ($no_chdir ? $dir_name : $File::Find::current_dir)) { |
cd68ec93 |
844 | warnings::warnif "Can't opendir($dir_name): $!\n"; |
81793b90 |
845 | next; |
846 | } |
847 | @filenames = readdir DIR; |
848 | closedir(DIR); |
abfdd623 |
849 | @filenames = $pre_process->(@filenames) if $pre_process; |
719c805e |
850 | push @Stack,[$CdLvl,$dir_name,"",-2] if $post_process; |
81793b90 |
851 | |
5fa2bf2b |
852 | # default: use whatever was specifid |
853 | # (if $nlink >= 2, and $avoid_nlink == 0, this will switch back) |
854 | $no_nlink = $avoid_nlink; |
855 | # if dir has wrong nlink count, force switch to slower stat method |
856 | $no_nlink = 1 if ($nlink < 2); |
857 | |
858 | if ($nlink == 2 && !$no_nlink) { |
81793b90 |
859 | # This dir has no subdirectories. |
860 | for my $FN (@filenames) { |
7e47e6ff |
861 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
862 | |
7e47e6ff |
863 | $name = $dir_pref . $FN; # $File::Find::name |
864 | $_ = ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
865 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
866 | } |
867 | |
868 | } |
869 | else { |
870 | # This dir has subdirectories. |
871 | $subcount = $nlink - 2; |
872 | |
7bd31527 |
873 | # HACK: insert directories at this position. so as to preserve |
874 | # the user pre-processed ordering of files. |
875 | # EG: directory traversal is in user sorted order, not at random. |
876 | my $stack_top = @Stack; |
877 | |
81793b90 |
878 | for my $FN (@filenames) { |
7e47e6ff |
879 | next if $FN =~ $File::Find::skip_pattern; |
5fa2bf2b |
880 | if ($subcount > 0 || $no_nlink) { |
81793b90 |
881 | # Seen all the subdirs? |
882 | # check for directoriness. |
883 | # stat is faster for a file in the current directory |
07867069 |
884 | $sub_nlink = (lstat ($no_chdir ? $dir_pref . $FN : $FN))[3]; |
81793b90 |
885 | |
886 | if (-d _) { |
887 | --$subcount; |
544ff7a7 |
888 | $FN =~ s/\.dir\z//i if $Is_VMS; |
7bd31527 |
889 | # HACK: replace push to preserve dir traversal order |
890 | #push @Stack,[$CdLvl,$dir_name,$FN,$sub_nlink]; |
891 | splice @Stack, $stack_top, 0, |
892 | [$CdLvl,$dir_name,$FN,$sub_nlink]; |
81793b90 |
893 | } |
894 | else { |
7e47e6ff |
895 | $name = $dir_pref . $FN; # $File::Find::name |
896 | $_= ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
897 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
898 | } |
899 | } |
07867069 |
900 | else { |
7e47e6ff |
901 | $name = $dir_pref . $FN; # $File::Find::name |
902 | $_= ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
903 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
904 | } |
905 | } |
906 | } |
17b275ff |
907 | } |
908 | continue { |
57e73c4b |
909 | while ( defined ($SE = pop @Stack) ) { |
81793b90 |
910 | ($Level, $p_dir, $dir_rel, $nlink) = @$SE; |
911 | if ($CdLvl > $Level && !$no_chdir) { |
7e47e6ff |
912 | my $tmp; |
913 | if ($Is_MacOS) { |
914 | $tmp = (':' x ($CdLvl-$Level)) . ':'; |
915 | } |
916 | else { |
917 | $tmp = join('/',('..') x ($CdLvl-$Level)); |
918 | } |
919 | die "Can't cd to $dir_name" . $tmp |
920 | unless chdir ($tmp); |
81793b90 |
921 | $CdLvl = $Level; |
922 | } |
7e47e6ff |
923 | |
924 | if ($Is_MacOS) { |
925 | # $pdir always has a trailing ':', except for the starting dir, |
926 | # where $dir_rel eq ':' |
927 | $dir_name = "$p_dir$dir_rel"; |
928 | $dir_pref = "$dir_name:"; |
929 | } |
930 | else { |
931 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
932 | $dir_pref = "$dir_name/"; |
933 | } |
934 | |
719c805e |
935 | if ( $nlink == -2 ) { |
7e47e6ff |
936 | $name = $dir = $p_dir; # $File::Find::name / dir |
39e79f6b |
937 | $_ = $File::Find::current_dir; |
abfdd623 |
938 | $post_process->(); # End-of-directory processing |
7e47e6ff |
939 | } |
940 | elsif ( $nlink < 0 ) { # must be finddepth, report dirname now |
941 | $name = $dir_name; |
942 | if ($Is_MacOS) { |
943 | if ($dir_rel eq ':') { # must be the top dir, where we started |
944 | $name =~ s|:$||; # $File::Find::name |
945 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
946 | } |
947 | $dir = $p_dir; # $File::Find::dir |
948 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
949 | } |
950 | else { |
951 | if ( substr($name,-2) eq '/.' ) { |
5cf0a2f2 |
952 | substr($name, length($name) == 2 ? -1 : -2) = ''; |
7e47e6ff |
953 | } |
954 | $dir = $p_dir; |
955 | $_ = ($no_chdir ? $dir_name : $dir_rel ); |
956 | if ( substr($_,-2) eq '/.' ) { |
5cf0a2f2 |
957 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
958 | } |
959 | } |
abfdd623 |
960 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
961 | } |
962 | else { |
963 | push @Stack,[$CdLvl,$p_dir,$dir_rel,-1] if $bydepth; |
964 | last; |
965 | } |
81793b90 |
966 | } |
a0d0e21e |
967 | } |
968 | } |
969 | |
81793b90 |
970 | |
971 | # API: |
972 | # $wanted |
973 | # $dir_loc : absolute location of a dir |
974 | # $p_dir : "parent directory" |
975 | # preconditions: |
976 | # chdir (if not no_chdir) to dir |
977 | |
978 | sub _find_dir_symlnk($$$) { |
7e47e6ff |
979 | my ($wanted, $dir_loc, $p_dir) = @_; # $dir_loc is the absolute directory |
81793b90 |
980 | my @Stack; |
981 | my @filenames; |
982 | my $new_loc; |
7e47e6ff |
983 | my $updir_loc = $dir_loc; # untainted parent directory |
81793b90 |
984 | my $SE = []; |
985 | my $dir_name = $p_dir; |
7e47e6ff |
986 | my $dir_pref; |
987 | my $loc_pref; |
39e79f6b |
988 | my $dir_rel = $File::Find::current_dir; |
7e47e6ff |
989 | my $byd_flag; # flag for pending stack entry if $bydepth |
990 | my $tainted = 0; |
991 | my $ok = 1; |
992 | |
993 | if ($Is_MacOS) { |
994 | $dir_pref = ($p_dir =~ /:$/) ? "$p_dir" : "$p_dir:"; |
995 | $loc_pref = ($dir_loc =~ /:$/) ? "$dir_loc" : "$dir_loc:"; |
7e47e6ff |
996 | } else { |
997 | $dir_pref = ( $p_dir eq '/' ? '/' : "$p_dir/" ); |
998 | $loc_pref = ( $dir_loc eq '/' ? '/' : "$dir_loc/" ); |
7e47e6ff |
999 | } |
81793b90 |
1000 | |
1001 | local ($dir, $name, $fullname, $prune, *DIR); |
7e47e6ff |
1002 | |
1003 | unless ($no_chdir) { |
1004 | # untaint the topdir |
1005 | if (( $untaint ) && (is_tainted($dir_loc) )) { |
1006 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; # parent dir, now untainted |
1007 | # once untainted, $updir_loc is pushed on the stack (as parent directory); |
1008 | # hence, we don't need to untaint the parent directory every time we chdir |
1009 | # to it later |
1010 | unless (defined $updir_loc) { |
81793b90 |
1011 | if ($untaint_skip == 0) { |
1012 | die "directory $dir_loc is still tainted"; |
1013 | } |
1014 | else { |
1015 | return; |
1016 | } |
1017 | } |
1018 | } |
7e47e6ff |
1019 | $ok = chdir($updir_loc) unless ($p_dir eq $File::Find::current_dir); |
1020 | unless ($ok) { |
cd68ec93 |
1021 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
1022 | return; |
1023 | } |
1024 | } |
1025 | |
7e47e6ff |
1026 | push @Stack,[$dir_loc,$updir_loc,$p_dir,$dir_rel,-1] if $bydepth; |
1027 | |
1028 | if ($Is_MacOS) { |
1029 | $p_dir = $dir_pref; # ensure trailing ':' |
1030 | } |
57e73c4b |
1031 | |
81793b90 |
1032 | while (defined $SE) { |
1033 | |
1034 | unless ($bydepth) { |
7e47e6ff |
1035 | # change (back) to parent directory (always untainted) |
704ea872 |
1036 | unless ($no_chdir) { |
7e47e6ff |
1037 | unless (chdir $updir_loc) { |
cd68ec93 |
1038 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
704ea872 |
1039 | next; |
1040 | } |
1041 | } |
7e47e6ff |
1042 | $dir= $p_dir; # $File::Find::dir |
1043 | $name= $dir_name; # $File::Find::name |
1044 | $_= ($no_chdir ? $dir_name : $dir_rel ); # $_ |
1045 | $fullname= $dir_loc; # $File::Find::fullname |
81793b90 |
1046 | # prune may happen here |
7e47e6ff |
1047 | $prune= 0; |
704ea872 |
1048 | lstat($_); # make sure file tests with '_' work |
abfdd623 |
1049 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
1050 | next if $prune; |
81793b90 |
1051 | } |
1052 | |
1053 | # change to that directory |
7e47e6ff |
1054 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1055 | $updir_loc = $dir_loc; |
1056 | if ( ($untaint) && (($tainted) || ($tainted = is_tainted($dir_loc) )) ) { |
1057 | # untaint $dir_loc, what will be pushed on the stack as (untainted) parent dir |
1058 | ( $updir_loc ) = $dir_loc =~ m|$untaint_pat|; |
1059 | unless (defined $updir_loc) { |
81793b90 |
1060 | if ($untaint_skip == 0) { |
1061 | die "directory $dir_loc is still tainted"; |
a0d0e21e |
1062 | } |
237437d0 |
1063 | else { |
81793b90 |
1064 | next; |
237437d0 |
1065 | } |
a0d0e21e |
1066 | } |
1067 | } |
7e47e6ff |
1068 | unless (chdir $updir_loc) { |
cd68ec93 |
1069 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
81793b90 |
1070 | next; |
1071 | } |
1072 | } |
1073 | |
7e47e6ff |
1074 | if ($Is_MacOS) { |
1075 | $dir_name = "$dir_name:" unless ($dir_name =~ /:$/); |
1076 | } |
1077 | |
1078 | $dir = $dir_name; # $File::Find::dir |
81793b90 |
1079 | |
1080 | # Get the list of files in the current directory. |
7e47e6ff |
1081 | unless (opendir DIR, ($no_chdir ? $dir_loc : $File::Find::current_dir)) { |
cd68ec93 |
1082 | warnings::warnif "Can't opendir($dir_loc): $!\n"; |
81793b90 |
1083 | next; |
1084 | } |
1085 | @filenames = readdir DIR; |
1086 | closedir(DIR); |
1087 | |
1088 | for my $FN (@filenames) { |
7e47e6ff |
1089 | next if $FN =~ $File::Find::skip_pattern; |
81793b90 |
1090 | |
1091 | # follow symbolic links / do an lstat |
07867069 |
1092 | $new_loc = Follow_SymLink($loc_pref.$FN); |
81793b90 |
1093 | |
1094 | # ignore if invalid symlink |
1095 | next unless defined $new_loc; |
7e47e6ff |
1096 | |
81793b90 |
1097 | if (-d _) { |
7e47e6ff |
1098 | push @Stack,[$new_loc,$updir_loc,$dir_name,$FN,1]; |
81793b90 |
1099 | } |
1100 | else { |
7e47e6ff |
1101 | $fullname = $new_loc; # $File::Find::fullname |
1102 | $name = $dir_pref . $FN; # $File::Find::name |
1103 | $_ = ($no_chdir ? $name : $FN); # $_ |
abfdd623 |
1104 | { $wanted_callback->() }; # protect against wild "next" |
81793b90 |
1105 | } |
1106 | } |
1107 | |
81793b90 |
1108 | } |
1109 | continue { |
57e73c4b |
1110 | while (defined($SE = pop @Stack)) { |
7e47e6ff |
1111 | ($dir_loc, $updir_loc, $p_dir, $dir_rel, $byd_flag) = @$SE; |
1112 | if ($Is_MacOS) { |
1113 | # $p_dir always has a trailing ':', except for the starting dir, |
1114 | # where $dir_rel eq ':' |
1115 | $dir_name = "$p_dir$dir_rel"; |
1116 | $dir_pref = "$dir_name:"; |
1117 | $loc_pref = ($dir_loc =~ /:$/) ? $dir_loc : "$dir_loc:"; |
1118 | } |
1119 | else { |
1120 | $dir_name = ($p_dir eq '/' ? "/$dir_rel" : "$p_dir/$dir_rel"); |
1121 | $dir_pref = "$dir_name/"; |
1122 | $loc_pref = "$dir_loc/"; |
1123 | } |
1124 | if ( $byd_flag < 0 ) { # must be finddepth, report dirname now |
1125 | unless ($no_chdir || ($dir_rel eq $File::Find::current_dir)) { |
1126 | unless (chdir $updir_loc) { # $updir_loc (parent dir) is always untainted |
cd68ec93 |
1127 | warnings::warnif "Can't cd to $updir_loc: $!\n"; |
7e47e6ff |
1128 | next; |
1129 | } |
1130 | } |
1131 | $fullname = $dir_loc; # $File::Find::fullname |
1132 | $name = $dir_name; # $File::Find::name |
1133 | if ($Is_MacOS) { |
1134 | if ($dir_rel eq ':') { # must be the top dir, where we started |
1135 | $name =~ s|:$||; # $File::Find::name |
1136 | $p_dir = "$p_dir:" unless ($p_dir =~ /:$/); |
1137 | } |
1138 | $dir = $p_dir; # $File::Find::dir |
1139 | $_ = ($no_chdir ? $name : $dir_rel); # $_ |
1140 | } |
1141 | else { |
1142 | if ( substr($name,-2) eq '/.' ) { |
f801979b |
1143 | substr($name, length($name) == 2 ? -1 : -2) = ''; # $File::Find::name |
7e47e6ff |
1144 | } |
1145 | $dir = $p_dir; # $File::Find::dir |
1146 | $_ = ($no_chdir ? $dir_name : $dir_rel); # $_ |
1147 | if ( substr($_,-2) eq '/.' ) { |
f801979b |
1148 | substr($_, length($_) == 2 ? -1 : -2) = ''; |
7e47e6ff |
1149 | } |
1150 | } |
1151 | |
1152 | lstat($_); # make sure file tests with '_' work |
abfdd623 |
1153 | { $wanted_callback->() }; # protect against wild "next" |
7e47e6ff |
1154 | } |
1155 | else { |
1156 | push @Stack,[$dir_loc, $updir_loc, $p_dir, $dir_rel,-1] if $bydepth; |
1157 | last; |
1158 | } |
a0d0e21e |
1159 | } |
1160 | } |
1161 | } |
1162 | |
81793b90 |
1163 | |
20408e3c |
1164 | sub wrap_wanted { |
81793b90 |
1165 | my $wanted = shift; |
1166 | if ( ref($wanted) eq 'HASH' ) { |
1167 | if ( $wanted->{follow} || $wanted->{follow_fast}) { |
1168 | $wanted->{follow_skip} = 1 unless defined $wanted->{follow_skip}; |
1169 | } |
1170 | if ( $wanted->{untaint} ) { |
7e47e6ff |
1171 | $wanted->{untaint_pattern} = $File::Find::untaint_pattern |
81793b90 |
1172 | unless defined $wanted->{untaint_pattern}; |
1173 | $wanted->{untaint_skip} = 0 unless defined $wanted->{untaint_skip}; |
1174 | } |
1175 | return $wanted; |
1176 | } |
1177 | else { |
1178 | return { wanted => $wanted }; |
1179 | } |
a0d0e21e |
1180 | } |
1181 | |
20408e3c |
1182 | sub find { |
81793b90 |
1183 | my $wanted = shift; |
1184 | _find_opt(wrap_wanted($wanted), @_); |
a0d0e21e |
1185 | } |
1186 | |
55d729e4 |
1187 | sub finddepth { |
81793b90 |
1188 | my $wanted = wrap_wanted(shift); |
1189 | $wanted->{bydepth} = 1; |
1190 | _find_opt($wanted, @_); |
20408e3c |
1191 | } |
6280b799 |
1192 | |
7e47e6ff |
1193 | # default |
1194 | $File::Find::skip_pattern = qr/^\.{1,2}\z/; |
1195 | $File::Find::untaint_pattern = qr|^([-+@\w./]+)$|; |
1196 | |
6280b799 |
1197 | # These are hard-coded for now, but may move to hint files. |
10eba763 |
1198 | if ($^O eq 'VMS') { |
81793b90 |
1199 | $Is_VMS = 1; |
7e47e6ff |
1200 | $File::Find::dont_use_nlink = 1; |
1201 | } |
1202 | elsif ($^O eq 'MacOS') { |
1203 | $Is_MacOS = 1; |
1204 | $File::Find::dont_use_nlink = 1; |
1205 | $File::Find::skip_pattern = qr/^Icon\015\z/; |
1206 | $File::Find::untaint_pattern = qr|^(.+)$|; |
748a9306 |
1207 | } |
1208 | |
7e47e6ff |
1209 | # this _should_ work properly on all platforms |
1210 | # where File::Find can be expected to work |
1211 | $File::Find::current_dir = File::Spec->curdir || '.'; |
1212 | |
81793b90 |
1213 | $File::Find::dont_use_nlink = 1 |
497711e7 |
1214 | if $^O eq 'os2' || $^O eq 'dos' || $^O eq 'amigaos' || $^O eq 'MSWin32' || |
1119cb72 |
1215 | $^O eq 'cygwin' || $^O eq 'epoc' || $^O eq 'qnx' || |
1216 | $^O eq 'nto'; |
6280b799 |
1217 | |
20408e3c |
1218 | # Set dont_use_nlink in your hint file if your system's stat doesn't |
1219 | # report the number of links in a directory as an indication |
1220 | # of the number of files. |
1221 | # See, e.g. hints/machten.sh for MachTen 2.2. |
81793b90 |
1222 | unless ($File::Find::dont_use_nlink) { |
1223 | require Config; |
1224 | $File::Find::dont_use_nlink = 1 if ($Config::Config{'dont_use_nlink'}); |
20408e3c |
1225 | } |
1226 | |
7e47e6ff |
1227 | # We need a function that checks if a scalar is tainted. Either use the |
1228 | # Scalar::Util module's tainted() function or our (slower) pure Perl |
1229 | # fallback is_tainted_pp() |
1230 | { |
1231 | local $@; |
1232 | eval { require Scalar::Util }; |
1233 | *is_tainted = $@ ? \&is_tainted_pp : \&Scalar::Util::tainted; |
1234 | } |
1235 | |
a0d0e21e |
1236 | 1; |