Commit | Line | Data |
270d1e39 |
1 | package File::Spec::Win32; |
2 | |
cbc7acb0 |
3 | use strict; |
c27914c9 |
4 | use Cwd; |
b4296952 |
5 | use vars qw(@ISA $VERSION); |
cbc7acb0 |
6 | require File::Spec::Unix; |
b4296952 |
7 | |
3c32ced9 |
8 | $VERSION = '1.2'; |
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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 | |
cbc7acb0 |
18 | require File::Spec::Win32; # Done internally by File::Spec if needed |
270d1e39 |
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 | |
26 | =over |
27 | |
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28 | =item devnull |
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29 | |
cbc7acb0 |
30 | Returns a string representation of the null device. |
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31 | |
cbc7acb0 |
32 | =cut |
270d1e39 |
33 | |
cbc7acb0 |
34 | sub devnull { |
35 | return "nul"; |
36 | } |
270d1e39 |
37 | |
cbc7acb0 |
38 | =item tmpdir |
270d1e39 |
39 | |
cbc7acb0 |
40 | Returns a string representation of the first existing directory |
41 | from the following list: |
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42 | |
cbc7acb0 |
43 | $ENV{TMPDIR} |
44 | $ENV{TEMP} |
45 | $ENV{TMP} |
46 | /tmp |
47 | / |
48 | |
49 | =cut |
270d1e39 |
50 | |
cbc7acb0 |
51 | my $tmpdir; |
52 | sub tmpdir { |
53 | return $tmpdir if defined $tmpdir; |
270d1e39 |
54 | my $self = shift; |
cbc7acb0 |
55 | foreach (@ENV{qw(TMPDIR TEMP TMP)}, qw(/tmp /)) { |
56 | next unless defined && -d; |
57 | $tmpdir = $_; |
58 | last; |
270d1e39 |
59 | } |
cbc7acb0 |
60 | $tmpdir = '' unless defined $tmpdir; |
61 | $tmpdir = $self->canonpath($tmpdir); |
62 | return $tmpdir; |
63 | } |
64 | |
46726cbe |
65 | sub case_tolerant { |
66 | return 1; |
67 | } |
68 | |
cbc7acb0 |
69 | sub file_name_is_absolute { |
70 | my ($self,$file) = @_; |
1b1e14d3 |
71 | return scalar($file =~ m{^([a-z]:)?[\\/]}is); |
270d1e39 |
72 | } |
73 | |
74 | =item catfile |
75 | |
76 | Concatenate one or more directory names and a filename to form a |
77 | complete path ending with a filename |
78 | |
79 | =cut |
80 | |
81 | sub catfile { |
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82 | my $self = shift; |
270d1e39 |
83 | my $file = pop @_; |
84 | return $file unless @_; |
85 | my $dir = $self->catdir(@_); |
cbc7acb0 |
86 | $dir .= "\\" unless substr($dir,-1) eq "\\"; |
270d1e39 |
87 | return $dir.$file; |
88 | } |
89 | |
90 | sub path { |
270d1e39 |
91 | my $path = $ENV{'PATH'} || $ENV{'Path'} || $ENV{'path'}; |
92 | my @path = split(';',$path); |
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93 | foreach (@path) { $_ = '.' if $_ eq '' } |
94 | return @path; |
270d1e39 |
95 | } |
96 | |
97 | =item canonpath |
98 | |
99 | No physical check on the filesystem, but a logical cleanup of a |
100 | path. On UNIX eliminated successive slashes and successive "/.". |
101 | |
102 | =cut |
103 | |
104 | sub canonpath { |
0994714a |
105 | my ($self,$path) = @_; |
1b1e14d3 |
106 | $path =~ s/^([a-z]:)/\u$1/s; |
270d1e39 |
107 | $path =~ s|/|\\|g; |
f505c983 |
108 | $path =~ s|([^\\])\\+|$1\\|g; # xx////xx -> xx/xx |
cbc7acb0 |
109 | $path =~ s|(\\\.)+\\|\\|g; # xx/././xx -> xx/xx |
1b1e14d3 |
110 | $path =~ s|^(\.\\)+||s unless $path eq ".\\"; # ./xx -> xx |
9c045eb2 |
111 | $path =~ s|\\\Z(?!\n)|| |
112 | unless $path =~ m#^([A-Z]:)?\\\Z(?!\n)#s; # xx/ -> xx |
cbc7acb0 |
113 | return $path; |
270d1e39 |
114 | } |
115 | |
c27914c9 |
116 | =item splitpath |
117 | |
118 | ($volume,$directories,$file) = File::Spec->splitpath( $path ); |
119 | ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file ); |
120 | |
121 | Splits a path in to volume, directory, and filename portions. Assumes that |
122 | the last file is a path unless the path ends in '\\', '\\.', '\\..' |
123 | or $no_file is true. On Win32 this means that $no_file true makes this return |
124 | ( $volume, $path, undef ). |
125 | |
126 | Separators accepted are \ and /. |
127 | |
128 | Volumes can be drive letters or UNC sharenames (\\server\share). |
129 | |
0994714a |
130 | The results can be passed to L</catpath> to get back a path equivalent to |
c27914c9 |
131 | (usually identical to) the original path. |
132 | |
133 | =cut |
134 | |
135 | sub splitpath { |
136 | my ($self,$path, $nofile) = @_; |
137 | my ($volume,$directory,$file) = ('','',''); |
138 | if ( $nofile ) { |
139 | $path =~ |
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140 | m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? ) |
c27914c9 |
141 | (.*) |
1b1e14d3 |
142 | }xs; |
c27914c9 |
143 | $volume = $1; |
144 | $directory = $2; |
145 | } |
146 | else { |
147 | $path =~ |
0994714a |
148 | m{^ ( (?: [a-zA-Z]: | |
149 | (?:\\\\|//)[^\\/]+[\\/][^\\/]+ |
c27914c9 |
150 | )? |
151 | ) |
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152 | ( (?:.*[\\\\/](?:\.\.?\Z(?!\n))?)? ) |
c27914c9 |
153 | (.*) |
1b1e14d3 |
154 | }xs; |
c27914c9 |
155 | $volume = $1; |
156 | $directory = $2; |
157 | $file = $3; |
158 | } |
159 | |
160 | return ($volume,$directory,$file); |
161 | } |
162 | |
163 | |
164 | =item splitdir |
165 | |
166 | The opposite of L</catdir()>. |
167 | |
168 | @dirs = File::Spec->splitdir( $directories ); |
169 | |
170 | $directories must be only the directory portion of the path on systems |
171 | that have the concept of a volume or that have path syntax that differentiates |
172 | files from directories. |
173 | |
174 | Unlike just splitting the directories on the separator, leading empty and |
175 | trailing directory entries can be returned, because these are significant |
176 | on some OSs. So, |
177 | |
178 | File::Spec->splitdir( "/a/b/c" ); |
179 | |
180 | Yields: |
181 | |
182 | ( '', 'a', 'b', '', 'c', '' ) |
183 | |
184 | =cut |
185 | |
186 | sub splitdir { |
187 | my ($self,$directories) = @_ ; |
188 | # |
189 | # split() likes to forget about trailing null fields, so here we |
190 | # check to be sure that there will not be any before handling the |
191 | # simple case. |
192 | # |
9c045eb2 |
193 | if ( $directories !~ m|[\\/]\Z(?!\n)| ) { |
c27914c9 |
194 | return split( m|[\\/]|, $directories ); |
195 | } |
196 | else { |
197 | # |
198 | # since there was a trailing separator, add a file name to the end, |
199 | # then do the split, then replace it with ''. |
200 | # |
201 | my( @directories )= split( m|[\\/]|, "${directories}dummy" ) ; |
202 | $directories[ $#directories ]= '' ; |
203 | return @directories ; |
204 | } |
205 | } |
206 | |
207 | |
208 | =item catpath |
209 | |
210 | Takes volume, directory and file portions and returns an entire path. Under |
211 | Unix, $volume is ignored, and this is just like catfile(). On other OSs, |
212 | the $volume become significant. |
213 | |
214 | =cut |
215 | |
216 | sub catpath { |
217 | my ($self,$volume,$directory,$file) = @_; |
218 | |
219 | # If it's UNC, make sure the glue separator is there, reusing |
220 | # whatever separator is first in the $volume |
221 | $volume .= $1 |
9c045eb2 |
222 | if ( $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s && |
1b1e14d3 |
223 | $directory =~ m@^[^\\/]@s |
c27914c9 |
224 | ) ; |
225 | |
226 | $volume .= $directory ; |
227 | |
228 | # If the volume is not just A:, make sure the glue separator is |
229 | # there, reusing whatever separator is first in the $volume if possible. |
9c045eb2 |
230 | if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s && |
231 | $volume =~ m@[^\\/]\Z(?!\n)@ && |
0994714a |
232 | $file =~ m@[^\\/]@ |
c27914c9 |
233 | ) { |
234 | $volume =~ m@([\\/])@ ; |
235 | my $sep = $1 ? $1 : '\\' ; |
236 | $volume .= $sep ; |
237 | } |
238 | |
239 | $volume .= $file ; |
240 | |
241 | return $volume ; |
242 | } |
243 | |
244 | |
c27914c9 |
245 | sub abs2rel { |
246 | my($self,$path,$base) = @_; |
247 | |
248 | # Clean up $path |
249 | if ( ! $self->file_name_is_absolute( $path ) ) { |
250 | $path = $self->rel2abs( $path ) ; |
251 | } |
252 | else { |
253 | $path = $self->canonpath( $path ) ; |
254 | } |
255 | |
256 | # Figure out the effective $base and clean it up. |
257 | if ( ! $self->file_name_is_absolute( $base ) ) { |
258 | $base = $self->rel2abs( $base ) ; |
259 | } |
260 | elsif ( !defined( $base ) || $base eq '' ) { |
261 | $base = cwd() ; |
262 | } |
263 | else { |
264 | $base = $self->canonpath( $base ) ; |
265 | } |
266 | |
267 | # Split up paths |
268 | my ( $path_volume, $path_directories, $path_file ) = |
269 | $self->splitpath( $path, 1 ) ; |
270 | |
9c045eb2 |
271 | my $base_directories = ($self->splitpath( $base, 1 ))[1] ; |
c27914c9 |
272 | |
273 | # Now, remove all leading components that are the same |
274 | my @pathchunks = $self->splitdir( $path_directories ); |
275 | my @basechunks = $self->splitdir( $base_directories ); |
276 | |
277 | while ( @pathchunks && |
278 | @basechunks && |
279 | lc( $pathchunks[0] ) eq lc( $basechunks[0] ) |
280 | ) { |
281 | shift @pathchunks ; |
282 | shift @basechunks ; |
283 | } |
284 | |
285 | # No need to catdir, we know these are well formed. |
286 | $path_directories = CORE::join( '\\', @pathchunks ); |
287 | $base_directories = CORE::join( '\\', @basechunks ); |
288 | |
5cefc38b |
289 | # $base_directories now contains the directories the resulting relative |
290 | # path must ascend out of before it can descend to $path_directory. So, |
c27914c9 |
291 | # replace all names with $parentDir |
5cefc38b |
292 | |
293 | #FA Need to replace between backslashes... |
294 | $base_directories =~ s|[^\\]+|..|g ; |
c27914c9 |
295 | |
296 | # Glue the two together, using a separator if necessary, and preventing an |
297 | # empty result. |
5cefc38b |
298 | |
299 | #FA Must check that new directories are not empty. |
300 | if ( $path_directories ne '' && $base_directories ne '' ) { |
c27914c9 |
301 | $path_directories = "$base_directories\\$path_directories" ; |
302 | } else { |
303 | $path_directories = "$base_directories$path_directories" ; |
304 | } |
305 | |
0994714a |
306 | # It makes no sense to add a relative path to a UNC volume |
1b1e14d3 |
307 | $path_volume = '' unless $path_volume =~ m{^[A-Z]:}is ; |
0994714a |
308 | |
c27914c9 |
309 | return $self->canonpath( |
0994714a |
310 | $self->catpath($path_volume, $path_directories, $path_file ) |
c27914c9 |
311 | ) ; |
312 | } |
313 | |
c27914c9 |
314 | |
786b702f |
315 | sub rel2abs { |
c27914c9 |
316 | my ($self,$path,$base ) = @_; |
317 | |
c27914c9 |
318 | if ( ! $self->file_name_is_absolute( $path ) ) { |
319 | |
1d7cb664 |
320 | if ( !defined( $base ) || $base eq '' ) { |
c27914c9 |
321 | $base = cwd() ; |
322 | } |
1d7cb664 |
323 | elsif ( ! $self->file_name_is_absolute( $base ) ) { |
324 | $base = $self->rel2abs( $base ) ; |
325 | } |
c27914c9 |
326 | else { |
327 | $base = $self->canonpath( $base ) ; |
328 | } |
329 | |
9c045eb2 |
330 | my ( $path_directories, $path_file ) = |
331 | ($self->splitpath( $path, 1 ))[1,2] ; |
c27914c9 |
332 | |
9c045eb2 |
333 | my ( $base_volume, $base_directories ) = |
c27914c9 |
334 | $self->splitpath( $base, 1 ) ; |
335 | |
336 | $path = $self->catpath( |
337 | $base_volume, |
338 | $self->catdir( $base_directories, $path_directories ), |
339 | $path_file |
340 | ) ; |
341 | } |
342 | |
343 | return $self->canonpath( $path ) ; |
344 | } |
345 | |
270d1e39 |
346 | =back |
347 | |
cbc7acb0 |
348 | =head1 SEE ALSO |
349 | |
350 | L<File::Spec> |
270d1e39 |
351 | |
cbc7acb0 |
352 | =cut |
353 | |
354 | 1; |