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270d1e39 |
1 | package File::Spec::Win32; |
2 | |
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3 | use strict; |
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4 | use Cwd; |
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5 | use vars qw(@ISA $VERSION); |
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6 | require File::Spec::Unix; |
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7 | |
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8 | $VERSION = '1.3'; |
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9 | |
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10 | @ISA = qw(File::Spec::Unix); |
11 | |
270d1e39 |
12 | =head1 NAME |
13 | |
14 | File::Spec::Win32 - methods for Win32 file specs |
15 | |
16 | =head1 SYNOPSIS |
17 | |
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18 | require File::Spec::Win32; # Done internally by File::Spec if needed |
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19 | |
20 | =head1 DESCRIPTION |
21 | |
22 | See File::Spec::Unix for a documentation of the methods provided |
23 | there. This package overrides the implementation of these methods, not |
24 | the semantics. |
25 | |
bbc7dcd2 |
26 | =over 4 |
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27 | |
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28 | =item devnull |
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29 | |
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30 | Returns a string representation of the null device. |
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31 | |
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32 | =cut |
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33 | |
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34 | sub devnull { |
35 | return "nul"; |
36 | } |
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37 | |
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38 | =item tmpdir |
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39 | |
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40 | Returns a string representation of the first existing directory |
41 | from the following list: |
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42 | |
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43 | $ENV{TMPDIR} |
44 | $ENV{TEMP} |
45 | $ENV{TMP} |
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46 | SYS:/temp |
28747828 |
47 | C:/temp |
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48 | /tmp |
49 | / |
50 | |
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51 | The SYS:/temp is preferred in Novell NetWare. |
52 | |
53 | Since Perl 5.8.0, if running under taint mode, and if the environment |
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54 | variables are tainted, they are not used. |
55 | |
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56 | =cut |
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57 | |
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58 | my $tmpdir; |
59 | sub tmpdir { |
60 | return $tmpdir if defined $tmpdir; |
270d1e39 |
61 | my $self = shift; |
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62 | my @dirlist = (@ENV{qw(TMPDIR TEMP TMP)}, qw(C:/temp /tmp /)); |
63 | { |
64 | no strict 'refs'; |
65 | if (${"\cTAINT"}) { # Check for taint mode on perl >= 5.8.0 |
66 | require Scalar::Util; |
67 | @dirlist = grep { ! Scalar::Util::tainted $_ } @dirlist; |
68 | } |
69 | } |
70 | foreach (@dirlist) { |
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71 | next unless defined && -d; |
72 | $tmpdir = $_; |
73 | last; |
270d1e39 |
74 | } |
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75 | $tmpdir = '' unless defined $tmpdir; |
76 | $tmpdir = $self->canonpath($tmpdir); |
77 | return $tmpdir; |
78 | } |
79 | |
46726cbe |
80 | sub case_tolerant { |
81 | return 1; |
82 | } |
83 | |
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84 | sub file_name_is_absolute { |
85 | my ($self,$file) = @_; |
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86 | return scalar($file =~ m{^([a-z]:)?[\\/]}is); |
270d1e39 |
87 | } |
88 | |
89 | =item catfile |
90 | |
91 | Concatenate one or more directory names and a filename to form a |
92 | complete path ending with a filename |
93 | |
94 | =cut |
95 | |
96 | sub catfile { |
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97 | my $self = shift; |
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98 | my $file = $self->canonpath(pop @_); |
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99 | return $file unless @_; |
100 | my $dir = $self->catdir(@_); |
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101 | $dir .= "\\" unless substr($dir,-1) eq "\\"; |
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102 | return $dir.$file; |
103 | } |
104 | |
105 | sub path { |
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106 | my $path = $ENV{'PATH'} || $ENV{'Path'} || $ENV{'path'}; |
107 | my @path = split(';',$path); |
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108 | foreach (@path) { $_ = '.' if $_ eq '' } |
109 | return @path; |
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110 | } |
111 | |
112 | =item canonpath |
113 | |
114 | No physical check on the filesystem, but a logical cleanup of a |
115 | path. On UNIX eliminated successive slashes and successive "/.". |
cc23144f |
116 | On Win32 makes |
117 | |
118 | dir1\dir2\dir3\..\..\dir4 -> \dir\dir4 and even |
119 | dir1\dir2\dir3\...\dir4 -> \dir\dir4 |
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120 | |
121 | =cut |
122 | |
123 | sub canonpath { |
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124 | my ($self,$path) = @_; |
cc23144f |
125 | my $orig_path = $path; |
1b1e14d3 |
126 | $path =~ s/^([a-z]:)/\u$1/s; |
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127 | $path =~ s|/|\\|g; |
ecf68df6 |
128 | $path =~ s|([^\\])\\+|$1\\|g; # xx\\\\xx -> xx\xx |
129 | $path =~ s|(\\\.)+\\|\\|g; # xx\.\.\xx -> xx\xx |
130 | $path =~ s|^(\.\\)+||s unless $path eq ".\\"; # .\xx -> xx |
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131 | $path =~ s|\\\Z(?!\n)|| |
ecf68df6 |
132 | unless $path =~ m#^([A-Z]:)?\\\Z(?!\n)#s; # xx\ -> xx |
cc23144f |
133 | # xx1/xx2/xx3/../../xx -> xx1/xx |
134 | $path =~ s|\\\.\.\.\\|\\\.\.\\\.\.\\|g; # \...\ is 2 levels up |
135 | $path =~ s|^\.\.\.\\|\.\.\\\.\.\\|g; # ...\ is 2 levels up |
136 | return $path if $path =~ m|^\.\.|; # skip relative paths |
137 | return $path unless $path =~ /\.\./; # too few .'s to cleanup |
138 | return $path if $path =~ /\.\.\.\./; # too many .'s to cleanup |
139 | return $path if $orig_path =~ m|^\Q/../\E| |
140 | and $orig_path =~ m|\/$|; # don't do /../dirs/ |
141 | # when called from rel2abs() |
142 | # for ../dirs/ |
143 | my ($vol,$dirs,$file) = $self->splitpath($path); |
144 | my @dirs = $self->splitdir($dirs); |
145 | my (@base_dirs, @path_dirs); |
146 | my $dest = \@base_dirs; |
147 | for my $dir (@dirs){ |
148 | $dest = \@path_dirs if $dir eq $self->updir; |
149 | push @$dest, $dir; |
150 | } |
151 | # for each .. in @path_dirs pop one item from |
152 | # @base_dirs |
153 | while (my $dir = shift @path_dirs){ |
154 | unless ($dir eq $self->updir){ |
155 | unshift @path_dirs, $dir; |
156 | last; |
157 | } |
158 | pop @base_dirs; |
159 | } |
160 | $path = $self->catpath( |
161 | $vol, |
162 | $self->catdir(@base_dirs, @path_dirs), |
163 | $file |
164 | ); |
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165 | return $path; |
270d1e39 |
166 | } |
167 | |
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168 | =item splitpath |
169 | |
170 | ($volume,$directories,$file) = File::Spec->splitpath( $path ); |
171 | ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file ); |
172 | |
173 | Splits a path in to volume, directory, and filename portions. Assumes that |
174 | the last file is a path unless the path ends in '\\', '\\.', '\\..' |
175 | or $no_file is true. On Win32 this means that $no_file true makes this return |
176 | ( $volume, $path, undef ). |
177 | |
178 | Separators accepted are \ and /. |
179 | |
180 | Volumes can be drive letters or UNC sharenames (\\server\share). |
181 | |
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182 | The results can be passed to L</catpath> to get back a path equivalent to |
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183 | (usually identical to) the original path. |
184 | |
185 | =cut |
186 | |
187 | sub splitpath { |
188 | my ($self,$path, $nofile) = @_; |
189 | my ($volume,$directory,$file) = ('','',''); |
190 | if ( $nofile ) { |
191 | $path =~ |
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192 | m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? ) |
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193 | (.*) |
1b1e14d3 |
194 | }xs; |
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195 | $volume = $1; |
196 | $directory = $2; |
197 | } |
198 | else { |
199 | $path =~ |
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200 | m{^ ( (?: [a-zA-Z]: | |
201 | (?:\\\\|//)[^\\/]+[\\/][^\\/]+ |
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202 | )? |
203 | ) |
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204 | ( (?:.*[\\\\/](?:\.\.?\Z(?!\n))?)? ) |
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205 | (.*) |
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206 | }xs; |
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207 | $volume = $1; |
208 | $directory = $2; |
209 | $file = $3; |
210 | } |
211 | |
212 | return ($volume,$directory,$file); |
213 | } |
214 | |
215 | |
216 | =item splitdir |
217 | |
59605c55 |
218 | The opposite of L<catdir()|File::Spec/catdir()>. |
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219 | |
220 | @dirs = File::Spec->splitdir( $directories ); |
221 | |
222 | $directories must be only the directory portion of the path on systems |
223 | that have the concept of a volume or that have path syntax that differentiates |
224 | files from directories. |
225 | |
226 | Unlike just splitting the directories on the separator, leading empty and |
227 | trailing directory entries can be returned, because these are significant |
228 | on some OSs. So, |
229 | |
230 | File::Spec->splitdir( "/a/b/c" ); |
231 | |
232 | Yields: |
233 | |
234 | ( '', 'a', 'b', '', 'c', '' ) |
235 | |
236 | =cut |
237 | |
238 | sub splitdir { |
239 | my ($self,$directories) = @_ ; |
240 | # |
241 | # split() likes to forget about trailing null fields, so here we |
242 | # check to be sure that there will not be any before handling the |
243 | # simple case. |
244 | # |
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245 | if ( $directories !~ m|[\\/]\Z(?!\n)| ) { |
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246 | return split( m|[\\/]|, $directories ); |
247 | } |
248 | else { |
249 | # |
250 | # since there was a trailing separator, add a file name to the end, |
251 | # then do the split, then replace it with ''. |
252 | # |
253 | my( @directories )= split( m|[\\/]|, "${directories}dummy" ) ; |
254 | $directories[ $#directories ]= '' ; |
255 | return @directories ; |
256 | } |
257 | } |
258 | |
259 | |
260 | =item catpath |
261 | |
262 | Takes volume, directory and file portions and returns an entire path. Under |
263 | Unix, $volume is ignored, and this is just like catfile(). On other OSs, |
264 | the $volume become significant. |
265 | |
266 | =cut |
267 | |
268 | sub catpath { |
269 | my ($self,$volume,$directory,$file) = @_; |
270 | |
271 | # If it's UNC, make sure the glue separator is there, reusing |
272 | # whatever separator is first in the $volume |
273 | $volume .= $1 |
9c045eb2 |
274 | if ( $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s && |
1b1e14d3 |
275 | $directory =~ m@^[^\\/]@s |
c27914c9 |
276 | ) ; |
277 | |
278 | $volume .= $directory ; |
279 | |
280 | # If the volume is not just A:, make sure the glue separator is |
281 | # there, reusing whatever separator is first in the $volume if possible. |
9c045eb2 |
282 | if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s && |
283 | $volume =~ m@[^\\/]\Z(?!\n)@ && |
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284 | $file =~ m@[^\\/]@ |
c27914c9 |
285 | ) { |
286 | $volume =~ m@([\\/])@ ; |
287 | my $sep = $1 ? $1 : '\\' ; |
288 | $volume .= $sep ; |
289 | } |
290 | |
291 | $volume .= $file ; |
292 | |
293 | return $volume ; |
294 | } |
295 | |
296 | |
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297 | sub abs2rel { |
298 | my($self,$path,$base) = @_; |
299 | |
300 | # Clean up $path |
301 | if ( ! $self->file_name_is_absolute( $path ) ) { |
302 | $path = $self->rel2abs( $path ) ; |
303 | } |
304 | else { |
305 | $path = $self->canonpath( $path ) ; |
306 | } |
307 | |
308 | # Figure out the effective $base and clean it up. |
9c1370fb |
309 | if ( !defined( $base ) || $base eq '' ) { |
c27914c9 |
310 | $base = cwd() ; |
311 | } |
9c1370fb |
312 | elsif ( ! $self->file_name_is_absolute( $base ) ) { |
313 | $base = $self->rel2abs( $base ) ; |
314 | } |
c27914c9 |
315 | else { |
316 | $base = $self->canonpath( $base ) ; |
317 | } |
318 | |
319 | # Split up paths |
9b1c7707 |
320 | my ( undef, $path_directories, $path_file ) = |
c27914c9 |
321 | $self->splitpath( $path, 1 ) ; |
322 | |
9c045eb2 |
323 | my $base_directories = ($self->splitpath( $base, 1 ))[1] ; |
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324 | |
325 | # Now, remove all leading components that are the same |
326 | my @pathchunks = $self->splitdir( $path_directories ); |
327 | my @basechunks = $self->splitdir( $base_directories ); |
328 | |
329 | while ( @pathchunks && |
330 | @basechunks && |
331 | lc( $pathchunks[0] ) eq lc( $basechunks[0] ) |
332 | ) { |
333 | shift @pathchunks ; |
334 | shift @basechunks ; |
335 | } |
336 | |
337 | # No need to catdir, we know these are well formed. |
338 | $path_directories = CORE::join( '\\', @pathchunks ); |
339 | $base_directories = CORE::join( '\\', @basechunks ); |
340 | |
5cefc38b |
341 | # $base_directories now contains the directories the resulting relative |
342 | # path must ascend out of before it can descend to $path_directory. So, |
c27914c9 |
343 | # replace all names with $parentDir |
5cefc38b |
344 | |
345 | #FA Need to replace between backslashes... |
346 | $base_directories =~ s|[^\\]+|..|g ; |
c27914c9 |
347 | |
348 | # Glue the two together, using a separator if necessary, and preventing an |
349 | # empty result. |
5cefc38b |
350 | |
351 | #FA Must check that new directories are not empty. |
352 | if ( $path_directories ne '' && $base_directories ne '' ) { |
c27914c9 |
353 | $path_directories = "$base_directories\\$path_directories" ; |
354 | } else { |
355 | $path_directories = "$base_directories$path_directories" ; |
356 | } |
357 | |
358 | return $self->canonpath( |
9b1c7707 |
359 | $self->catpath( "", $path_directories, $path_file ) |
c27914c9 |
360 | ) ; |
361 | } |
362 | |
c27914c9 |
363 | |
786b702f |
364 | sub rel2abs { |
c27914c9 |
365 | my ($self,$path,$base ) = @_; |
366 | |
c27914c9 |
367 | if ( ! $self->file_name_is_absolute( $path ) ) { |
368 | |
1d7cb664 |
369 | if ( !defined( $base ) || $base eq '' ) { |
c27914c9 |
370 | $base = cwd() ; |
371 | } |
1d7cb664 |
372 | elsif ( ! $self->file_name_is_absolute( $base ) ) { |
373 | $base = $self->rel2abs( $base ) ; |
374 | } |
c27914c9 |
375 | else { |
376 | $base = $self->canonpath( $base ) ; |
377 | } |
378 | |
9c045eb2 |
379 | my ( $path_directories, $path_file ) = |
380 | ($self->splitpath( $path, 1 ))[1,2] ; |
c27914c9 |
381 | |
9c045eb2 |
382 | my ( $base_volume, $base_directories ) = |
c27914c9 |
383 | $self->splitpath( $base, 1 ) ; |
384 | |
385 | $path = $self->catpath( |
386 | $base_volume, |
387 | $self->catdir( $base_directories, $path_directories ), |
388 | $path_file |
389 | ) ; |
390 | } |
391 | |
392 | return $self->canonpath( $path ) ; |
393 | } |
394 | |
270d1e39 |
395 | =back |
396 | |
dd9bbc5b |
397 | =head2 Note For File::Spec::Win32 Maintainers |
398 | |
399 | Novell NetWare inherits its File::Spec behaviour from File::Spec::Win32. |
400 | |
cbc7acb0 |
401 | =head1 SEE ALSO |
402 | |
403 | L<File::Spec> |
270d1e39 |
404 | |
cbc7acb0 |
405 | =cut |
406 | |
407 | 1; |