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270d1e39 |
1 | package File::Spec::OS2; |
2 | |
270d1e39 |
3 | use strict; |
b4296952 |
4 | use vars qw(@ISA $VERSION); |
cbc7acb0 |
5 | require File::Spec::Unix; |
b4296952 |
6 | |
7 | $VERSION = '1.1'; |
8 | |
270d1e39 |
9 | @ISA = qw(File::Spec::Unix); |
10 | |
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11 | sub devnull { |
12 | return "/dev/nul"; |
13 | } |
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14 | |
46726cbe |
15 | sub case_tolerant { |
16 | return 1; |
17 | } |
18 | |
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19 | sub file_name_is_absolute { |
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20 | my ($self,$file) = @_; |
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21 | return scalar($file =~ m{^([a-z]:)?[\\/]}is); |
270d1e39 |
22 | } |
23 | |
24 | sub path { |
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25 | my $path = $ENV{PATH}; |
26 | $path =~ s:\\:/:g; |
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27 | my @path = split(';',$path); |
28 | foreach (@path) { $_ = '.' if $_ eq '' } |
29 | return @path; |
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30 | } |
31 | |
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32 | my $tmpdir; |
33 | sub tmpdir { |
34 | return $tmpdir if defined $tmpdir; |
35 | my $self = shift; |
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36 | my @dirlist = ( @ENV{qw(TMPDIR TEMP TMP)}, qw(/tmp /) ); |
37 | { |
38 | no strict 'refs'; |
39 | if (${"\cTAINT"}) { # Check for taint mode on perl >= 5.8.0 |
40 | require Scalar::Util; |
41 | @dirlist = grep { ! Scalar::Util::tainted $_ } @dirlist; |
42 | } |
43 | } |
44 | foreach (@dirlist) { |
cbc7acb0 |
45 | next unless defined && -d; |
46 | $tmpdir = $_; |
47 | last; |
48 | } |
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49 | $tmpdir = File::Spec->curdir unless defined $tmpdir; |
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50 | $tmpdir =~ s:\\:/:g; |
51 | $tmpdir = $self->canonpath($tmpdir); |
52 | return $tmpdir; |
99804bbb |
53 | } |
54 | |
f1e20921 |
55 | =item canonpath |
56 | |
57 | No physical check on the filesystem, but a logical cleanup of a |
58 | path. On UNIX eliminated successive slashes and successive "/.". |
59 | |
60 | =cut |
61 | |
62 | sub canonpath { |
63 | my ($self,$path) = @_; |
64 | $path =~ s/^([a-z]:)/\l$1/s; |
65 | $path =~ s|\\|/|g; |
66 | $path =~ s|([^/])/+|$1/|g; # xx////xx -> xx/xx |
67 | $path =~ s|(/\.)+/|/|g; # xx/././xx -> xx/xx |
68 | $path =~ s|^(\./)+(?=[^/])||s; # ./xx -> xx |
69 | $path =~ s|/\Z(?!\n)|| |
70 | unless $path =~ m#^([a-z]:)?/\Z(?!\n)#si;# xx/ -> xx |
71 | return $path; |
72 | } |
73 | |
74 | =item splitpath |
75 | |
76 | ($volume,$directories,$file) = File::Spec->splitpath( $path ); |
77 | ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file ); |
78 | |
40d020d9 |
79 | Splits a path into volume, directory, and filename portions. Assumes that |
f1e20921 |
80 | the last file is a path unless the path ends in '/', '/.', '/..' |
81 | or $no_file is true. On Win32 this means that $no_file true makes this return |
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82 | ( $volume, $path, '' ). |
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83 | |
84 | Separators accepted are \ and /. |
85 | |
86 | Volumes can be drive letters or UNC sharenames (\\server\share). |
87 | |
88 | The results can be passed to L</catpath> to get back a path equivalent to |
89 | (usually identical to) the original path. |
90 | |
91 | =cut |
92 | |
93 | sub splitpath { |
94 | my ($self,$path, $nofile) = @_; |
95 | my ($volume,$directory,$file) = ('','',''); |
96 | if ( $nofile ) { |
97 | $path =~ |
98 | m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? ) |
99 | (.*) |
100 | }xs; |
101 | $volume = $1; |
102 | $directory = $2; |
103 | } |
104 | else { |
105 | $path =~ |
106 | m{^ ( (?: [a-zA-Z]: | |
107 | (?:\\\\|//)[^\\/]+[\\/][^\\/]+ |
108 | )? |
109 | ) |
110 | ( (?:.*[\\\\/](?:\.\.?\Z(?!\n))?)? ) |
111 | (.*) |
112 | }xs; |
113 | $volume = $1; |
114 | $directory = $2; |
115 | $file = $3; |
116 | } |
117 | |
118 | return ($volume,$directory,$file); |
119 | } |
120 | |
121 | |
122 | =item splitdir |
123 | |
124 | The opposite of L<catdir()|File::Spec/catdir()>. |
125 | |
126 | @dirs = File::Spec->splitdir( $directories ); |
127 | |
128 | $directories must be only the directory portion of the path on systems |
129 | that have the concept of a volume or that have path syntax that differentiates |
130 | files from directories. |
131 | |
132 | Unlike just splitting the directories on the separator, leading empty and |
133 | trailing directory entries can be returned, because these are significant |
134 | on some OSs. So, |
135 | |
136 | File::Spec->splitdir( "/a/b//c/" ); |
137 | |
138 | Yields: |
139 | |
140 | ( '', 'a', 'b', '', 'c', '' ) |
141 | |
142 | =cut |
143 | |
144 | sub splitdir { |
145 | my ($self,$directories) = @_ ; |
146 | split m|[\\/]|, $directories, -1; |
147 | } |
148 | |
149 | |
150 | =item catpath |
151 | |
152 | Takes volume, directory and file portions and returns an entire path. Under |
153 | Unix, $volume is ignored, and this is just like catfile(). On other OSs, |
154 | the $volume become significant. |
155 | |
156 | =cut |
157 | |
158 | sub catpath { |
159 | my ($self,$volume,$directory,$file) = @_; |
160 | |
161 | # If it's UNC, make sure the glue separator is there, reusing |
162 | # whatever separator is first in the $volume |
163 | $volume .= $1 |
164 | if ( $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s && |
165 | $directory =~ m@^[^\\/]@s |
166 | ) ; |
167 | |
168 | $volume .= $directory ; |
169 | |
170 | # If the volume is not just A:, make sure the glue separator is |
171 | # there, reusing whatever separator is first in the $volume if possible. |
172 | if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s && |
173 | $volume =~ m@[^\\/]\Z(?!\n)@ && |
174 | $file =~ m@[^\\/]@ |
175 | ) { |
176 | $volume =~ m@([\\/])@ ; |
177 | my $sep = $1 ? $1 : '/' ; |
178 | $volume .= $sep ; |
179 | } |
180 | |
181 | $volume .= $file ; |
182 | |
183 | return $volume ; |
184 | } |
185 | |
186 | |
187 | sub abs2rel { |
188 | my($self,$path,$base) = @_; |
189 | |
190 | # Clean up $path |
191 | if ( ! $self->file_name_is_absolute( $path ) ) { |
192 | $path = $self->rel2abs( $path ) ; |
193 | } else { |
194 | $path = $self->canonpath( $path ) ; |
195 | } |
196 | |
197 | # Figure out the effective $base and clean it up. |
198 | if ( !defined( $base ) || $base eq '' ) { |
199 | $base = Cwd::sys_cwd() ; |
200 | } elsif ( ! $self->file_name_is_absolute( $base ) ) { |
201 | $base = $self->rel2abs( $base ) ; |
202 | } else { |
203 | $base = $self->canonpath( $base ) ; |
204 | } |
205 | |
206 | # Split up paths |
207 | my ( undef, $path_directories, $path_file ) = |
208 | $self->splitpath( $path, 1 ) ; |
209 | |
210 | my $base_directories = ($self->splitpath( $base, 1 ))[1] ; |
211 | |
212 | # Now, remove all leading components that are the same |
213 | my @pathchunks = $self->splitdir( $path_directories ); |
214 | my @basechunks = $self->splitdir( $base_directories ); |
215 | |
216 | while ( @pathchunks && |
217 | @basechunks && |
218 | lc( $pathchunks[0] ) eq lc( $basechunks[0] ) |
219 | ) { |
220 | shift @pathchunks ; |
221 | shift @basechunks ; |
222 | } |
223 | |
224 | # No need to catdir, we know these are well formed. |
225 | $path_directories = CORE::join( '/', @pathchunks ); |
226 | $base_directories = CORE::join( '/', @basechunks ); |
227 | |
228 | # $base_directories now contains the directories the resulting relative |
229 | # path must ascend out of before it can descend to $path_directory. So, |
230 | # replace all names with $parentDir |
231 | |
232 | #FA Need to replace between backslashes... |
233 | $base_directories =~ s|[^\\/]+|..|g ; |
234 | |
235 | # Glue the two together, using a separator if necessary, and preventing an |
236 | # empty result. |
237 | |
238 | #FA Must check that new directories are not empty. |
239 | if ( $path_directories ne '' && $base_directories ne '' ) { |
240 | $path_directories = "$base_directories/$path_directories" ; |
241 | } else { |
242 | $path_directories = "$base_directories$path_directories" ; |
243 | } |
244 | |
245 | return $self->canonpath( |
246 | $self->catpath( "", $path_directories, $path_file ) |
247 | ) ; |
248 | } |
249 | |
250 | |
251 | sub rel2abs { |
252 | my ($self,$path,$base ) = @_; |
253 | |
254 | if ( ! $self->file_name_is_absolute( $path ) ) { |
255 | |
256 | if ( !defined( $base ) || $base eq '' ) { |
257 | $base = Cwd::sys_cwd() ; |
258 | } |
259 | elsif ( ! $self->file_name_is_absolute( $base ) ) { |
260 | $base = $self->rel2abs( $base ) ; |
261 | } |
262 | else { |
263 | $base = $self->canonpath( $base ) ; |
264 | } |
265 | |
266 | my ( $path_directories, $path_file ) = |
267 | ($self->splitpath( $path, 1 ))[1,2] ; |
268 | |
269 | my ( $base_volume, $base_directories ) = |
270 | $self->splitpath( $base, 1 ) ; |
271 | |
272 | $path = $self->catpath( |
273 | $base_volume, |
274 | $self->catdir( $base_directories, $path_directories ), |
275 | $path_file |
276 | ) ; |
277 | } |
278 | |
279 | return $self->canonpath( $path ) ; |
280 | } |
281 | |
270d1e39 |
282 | 1; |
283 | __END__ |
284 | |
285 | =head1 NAME |
286 | |
287 | File::Spec::OS2 - methods for OS/2 file specs |
288 | |
289 | =head1 SYNOPSIS |
290 | |
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291 | require File::Spec::OS2; # Done internally by File::Spec if needed |
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292 | |
293 | =head1 DESCRIPTION |
294 | |
295 | See File::Spec::Unix for a documentation of the methods provided |
296 | there. This package overrides the implementation of these methods, not |
297 | the semantics. |