| Filename | /home/ss5/perl5/perlbrew/perls/tapper-perl/lib/5.16.3/x86_64-linux/File/Spec/Unix.pm |
| Statements | Executed 45 statements in 1.37ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 2 | 2 | 1 | 30µs | 34µs | File::Spec::Unix::canonpath |
| 1 | 1 | 1 | 22µs | 63µs | File::Spec::Unix::catfile |
| 1 | 1 | 1 | 14µs | 28µs | File::Spec::Unix::BEGIN@3 |
| 1 | 1 | 1 | 10µs | 24µs | File::Spec::Unix::BEGIN@149 |
| 1 | 1 | 1 | 9µs | 36µs | File::Spec::Unix::BEGIN@4 |
| 1 | 1 | 1 | 7µs | 7µs | File::Spec::Unix::file_name_is_absolute |
| 1 | 1 | 1 | 6µs | 18µs | File::Spec::Unix::catdir |
| 12 | 6 | 1 | 5µs | 5µs | File::Spec::Unix::CORE:subst (opcode) |
| 1 | 1 | 1 | 2µs | 2µs | File::Spec::Unix::curdir |
| 1 | 1 | 1 | 500ns | 500ns | File::Spec::Unix::CORE:match (opcode) |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::_collapse |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::_cwd |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::_same |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::_tmpdir |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::abs2rel |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::case_tolerant |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::catpath |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::devnull |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::join |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::no_upwards |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::path |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::rel2abs |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::rootdir |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::splitdir |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::splitpath |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::tmpdir |
| 0 | 0 | 0 | 0s | 0s | File::Spec::Unix::updir |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package File::Spec::Unix; | ||||
| 2 | |||||
| 3 | 2 | 29µs | 2 | 43µs | # spent 28µs (14+14) within File::Spec::Unix::BEGIN@3 which was called:
# once (14µs+14µs) by Devel::StackTrace::BEGIN@12 at line 3 # spent 28µs making 1 call to File::Spec::Unix::BEGIN@3
# spent 14µs making 1 call to strict::import |
| 4 | 2 | 426µs | 2 | 63µs | # spent 36µs (9+27) within File::Spec::Unix::BEGIN@4 which was called:
# once (9µs+27µs) by Devel::StackTrace::BEGIN@12 at line 4 # spent 36µs making 1 call to File::Spec::Unix::BEGIN@4
# spent 27µs making 1 call to vars::import |
| 5 | |||||
| 6 | 1 | 500ns | $VERSION = '3.40'; | ||
| 7 | 1 | 400ns | $VERSION =~ tr/_//; | ||
| 8 | |||||
| 9 | =head1 NAME | ||||
| 10 | |||||
| 11 | File::Spec::Unix - File::Spec for Unix, base for other File::Spec modules | ||||
| 12 | |||||
| 13 | =head1 SYNOPSIS | ||||
| 14 | |||||
| 15 | require File::Spec::Unix; # Done automatically by File::Spec | ||||
| 16 | |||||
| 17 | =head1 DESCRIPTION | ||||
| 18 | |||||
| 19 | Methods for manipulating file specifications. Other File::Spec | ||||
| 20 | modules, such as File::Spec::Mac, inherit from File::Spec::Unix and | ||||
| 21 | override specific methods. | ||||
| 22 | |||||
| 23 | =head1 METHODS | ||||
| 24 | |||||
| 25 | =over 2 | ||||
| 26 | |||||
| 27 | =item canonpath() | ||||
| 28 | |||||
| 29 | No physical check on the filesystem, but a logical cleanup of a | ||||
| 30 | path. On UNIX eliminates successive slashes and successive "/.". | ||||
| 31 | |||||
| 32 | $cpath = File::Spec->canonpath( $path ) ; | ||||
| 33 | |||||
| 34 | Note that this does *not* collapse F<x/../y> sections into F<y>. This | ||||
| 35 | is by design. If F</foo> on your system is a symlink to F</bar/baz>, | ||||
| 36 | then F</foo/../quux> is actually F</bar/quux>, not F</quux> as a naive | ||||
| 37 | F<../>-removal would give you. If you want to do this kind of | ||||
| 38 | processing, you probably want C<Cwd>'s C<realpath()> function to | ||||
| 39 | actually traverse the filesystem cleaning up paths like this. | ||||
| 40 | |||||
| 41 | =cut | ||||
| 42 | |||||
| 43 | sub canonpath { | ||||
| 44 | 2 | 2µs | my ($self,$path) = @_; | ||
| 45 | 2 | 400ns | return unless defined $path; | ||
| 46 | |||||
| 47 | # Handle POSIX-style node names beginning with double slash (qnx, nto) | ||||
| 48 | # (POSIX says: "a pathname that begins with two successive slashes | ||||
| 49 | # may be interpreted in an implementation-defined manner, although | ||||
| 50 | # more than two leading slashes shall be treated as a single slash.") | ||||
| 51 | 2 | 600ns | my $node = ''; | ||
| 52 | 2 | 2µs | my $double_slashes_special = $^O eq 'qnx' || $^O eq 'nto'; | ||
| 53 | |||||
| 54 | |||||
| 55 | 2 | 300ns | if ( $double_slashes_special | ||
| 56 | && ( $path =~ s{^(//[^/]+)/?\z}{}s || $path =~ s{^(//[^/]+)/}{/}s ) ) { | ||||
| 57 | $node = $1; | ||||
| 58 | } | ||||
| 59 | # This used to be | ||||
| 60 | # $path =~ s|/+|/|g unless ($^O eq 'cygwin'); | ||||
| 61 | # but that made tests 29, 30, 35, 46, and 213 (as of #13272) to fail | ||||
| 62 | # (Mainly because trailing "" directories didn't get stripped). | ||||
| 63 | # Why would cygwin avoid collapsing multiple slashes into one? --jhi | ||||
| 64 | 2 | 7µs | 2 | 1µs | $path =~ s|/{2,}|/|g; # xx////xx -> xx/xx # spent 1µs making 2 calls to File::Spec::Unix::CORE:subst, avg 500ns/call |
| 65 | 2 | 4µs | 2 | 600ns | $path =~ s{(?:/\.)+(?:/|\z)}{/}g; # xx/././xx -> xx/xx # spent 600ns making 2 calls to File::Spec::Unix::CORE:subst, avg 300ns/call |
| 66 | 2 | 4µs | 2 | 600ns | $path =~ s|^(?:\./)+||s unless $path eq "./"; # ./xx -> xx # spent 600ns making 2 calls to File::Spec::Unix::CORE:subst, avg 300ns/call |
| 67 | 2 | 3µs | 2 | 400ns | $path =~ s|^/(?:\.\./)+|/|; # /../../xx -> xx # spent 400ns making 2 calls to File::Spec::Unix::CORE:subst, avg 200ns/call |
| 68 | 2 | 3µs | 2 | 400ns | $path =~ s|^/\.\.$|/|; # /.. -> / # spent 400ns making 2 calls to File::Spec::Unix::CORE:subst, avg 200ns/call |
| 69 | 2 | 5µs | 2 | 2µs | $path =~ s|/\z|| unless $path eq "/"; # xx/ -> xx # spent 2µs making 2 calls to File::Spec::Unix::CORE:subst, avg 900ns/call |
| 70 | 2 | 11µs | return "$node$path"; | ||
| 71 | } | ||||
| 72 | |||||
| 73 | =item catdir() | ||||
| 74 | |||||
| 75 | Concatenate two or more directory names to form a complete path ending | ||||
| 76 | with a directory. But remove the trailing slash from the resulting | ||||
| 77 | string, because it doesn't look good, isn't necessary and confuses | ||||
| 78 | OS2. Of course, if this is the root directory, don't cut off the | ||||
| 79 | trailing slash :-) | ||||
| 80 | |||||
| 81 | =cut | ||||
| 82 | |||||
| 83 | # spent 18µs (6+12) within File::Spec::Unix::catdir which was called:
# once (6µs+12µs) by File::Spec::Unix::catfile at line 100 | ||||
| 84 | 1 | 500ns | my $self = shift; | ||
| 85 | |||||
| 86 | 1 | 5µs | 1 | 12µs | $self->canonpath(join('/', @_, '')); # '' because need a trailing '/' # spent 12µs making 1 call to File::Spec::Unix::canonpath |
| 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 | # spent 63µs (22+40) within File::Spec::Unix::catfile which was called:
# once (22µs+40µs) by FindBin::init at line 137 of FindBin.pm | ||||
| 97 | 1 | 600ns | my $self = shift; | ||
| 98 | 1 | 8µs | 1 | 22µs | my $file = $self->canonpath(pop @_); # spent 22µs making 1 call to File::Spec::Unix::canonpath |
| 99 | 1 | 500ns | return $file unless @_; | ||
| 100 | 1 | 4µs | 1 | 18µs | my $dir = $self->catdir(@_); # spent 18µs making 1 call to File::Spec::Unix::catdir |
| 101 | 1 | 1µs | $dir .= "/" unless substr($dir,-1) eq "/"; | ||
| 102 | 1 | 3µs | return $dir.$file; | ||
| 103 | } | ||||
| 104 | |||||
| 105 | =item curdir | ||||
| 106 | |||||
| 107 | Returns a string representation of the current directory. "." on UNIX. | ||||
| 108 | |||||
| 109 | =cut | ||||
| 110 | |||||
| 111 | 1 | 3µs | # spent 2µs within File::Spec::Unix::curdir which was called:
# once (2µs+0s) by Benchmark::Perl::Formance::BEGIN@18 at line 1094 of File/Find.pm | ||
| 112 | |||||
| 113 | =item devnull | ||||
| 114 | |||||
| 115 | Returns a string representation of the null device. "/dev/null" on UNIX. | ||||
| 116 | |||||
| 117 | =cut | ||||
| 118 | |||||
| 119 | sub devnull { '/dev/null' } | ||||
| 120 | |||||
| 121 | =item rootdir | ||||
| 122 | |||||
| 123 | Returns a string representation of the root directory. "/" on UNIX. | ||||
| 124 | |||||
| 125 | =cut | ||||
| 126 | |||||
| 127 | sub rootdir { '/' } | ||||
| 128 | |||||
| 129 | =item tmpdir | ||||
| 130 | |||||
| 131 | Returns a string representation of the first writable directory from | ||||
| 132 | the following list or the current directory if none from the list are | ||||
| 133 | writable: | ||||
| 134 | |||||
| 135 | $ENV{TMPDIR} | ||||
| 136 | /tmp | ||||
| 137 | |||||
| 138 | If running under taint mode, and if $ENV{TMPDIR} | ||||
| 139 | is tainted, it is not used. | ||||
| 140 | |||||
| 141 | =cut | ||||
| 142 | |||||
| 143 | 1 | 100ns | my $tmpdir; | ||
| 144 | sub _tmpdir { | ||||
| 145 | return $tmpdir if defined $tmpdir; | ||||
| 146 | my $self = shift; | ||||
| 147 | my @dirlist = @_; | ||||
| 148 | { | ||||
| 149 | 2 | 832µs | 2 | 37µs | # spent 24µs (10+13) within File::Spec::Unix::BEGIN@149 which was called:
# once (10µs+13µs) by Devel::StackTrace::BEGIN@12 at line 149 # spent 24µs making 1 call to File::Spec::Unix::BEGIN@149
# spent 13µs making 1 call to strict::unimport |
| 150 | if (${"\cTAINT"}) { # Check for taint mode on perl >= 5.8.0 | ||||
| 151 | require Scalar::Util; | ||||
| 152 | @dirlist = grep { ! Scalar::Util::tainted($_) } @dirlist; | ||||
| 153 | } | ||||
| 154 | elsif ($] < 5.007) { # No ${^TAINT} before 5.8 | ||||
| 155 | @dirlist = grep { eval { eval('1'.substr $_,0,0) } } @dirlist; | ||||
| 156 | } | ||||
| 157 | } | ||||
| 158 | foreach (@dirlist) { | ||||
| 159 | next unless defined && -d && -w _; | ||||
| 160 | $tmpdir = $_; | ||||
| 161 | last; | ||||
| 162 | } | ||||
| 163 | $tmpdir = $self->curdir unless defined $tmpdir; | ||||
| 164 | $tmpdir = defined $tmpdir && $self->canonpath($tmpdir); | ||||
| 165 | return $tmpdir; | ||||
| 166 | } | ||||
| 167 | |||||
| 168 | sub tmpdir { | ||||
| 169 | return $tmpdir if defined $tmpdir; | ||||
| 170 | $tmpdir = $_[0]->_tmpdir( $ENV{TMPDIR}, "/tmp" ); | ||||
| 171 | } | ||||
| 172 | |||||
| 173 | =item updir | ||||
| 174 | |||||
| 175 | Returns a string representation of the parent directory. ".." on UNIX. | ||||
| 176 | |||||
| 177 | =cut | ||||
| 178 | |||||
| 179 | sub updir { '..' } | ||||
| 180 | |||||
| 181 | =item no_upwards | ||||
| 182 | |||||
| 183 | Given a list of file names, strip out those that refer to a parent | ||||
| 184 | directory. (Does not strip symlinks, only '.', '..', and equivalents.) | ||||
| 185 | |||||
| 186 | =cut | ||||
| 187 | |||||
| 188 | sub no_upwards { | ||||
| 189 | my $self = shift; | ||||
| 190 | return grep(!/^\.{1,2}\z/s, @_); | ||||
| 191 | } | ||||
| 192 | |||||
| 193 | =item case_tolerant | ||||
| 194 | |||||
| 195 | Returns a true or false value indicating, respectively, that alphabetic | ||||
| 196 | is not or is significant when comparing file specifications. | ||||
| 197 | |||||
| 198 | =cut | ||||
| 199 | |||||
| 200 | sub case_tolerant { 0 } | ||||
| 201 | |||||
| 202 | =item file_name_is_absolute | ||||
| 203 | |||||
| 204 | Takes as argument a path and returns true if it is an absolute path. | ||||
| 205 | |||||
| 206 | This does not consult the local filesystem on Unix, Win32, OS/2 or Mac | ||||
| 207 | OS (Classic). It does consult the working environment for VMS (see | ||||
| 208 | L<File::Spec::VMS/file_name_is_absolute>). | ||||
| 209 | |||||
| 210 | =cut | ||||
| 211 | |||||
| 212 | # spent 7µs (7+500ns) within File::Spec::Unix::file_name_is_absolute which was called:
# once (7µs+500ns) by FindBin::init at line 137 of FindBin.pm | ||||
| 213 | 1 | 1µs | my ($self,$file) = @_; | ||
| 214 | 1 | 8µs | 1 | 500ns | return scalar($file =~ m:^/:s); # spent 500ns making 1 call to File::Spec::Unix::CORE:match |
| 215 | } | ||||
| 216 | |||||
| 217 | =item path | ||||
| 218 | |||||
| 219 | Takes no argument, returns the environment variable PATH as an array. | ||||
| 220 | |||||
| 221 | =cut | ||||
| 222 | |||||
| 223 | sub path { | ||||
| 224 | return () unless exists $ENV{PATH}; | ||||
| 225 | my @path = split(':', $ENV{PATH}); | ||||
| 226 | foreach (@path) { $_ = '.' if $_ eq '' } | ||||
| 227 | return @path; | ||||
| 228 | } | ||||
| 229 | |||||
| 230 | =item join | ||||
| 231 | |||||
| 232 | join is the same as catfile. | ||||
| 233 | |||||
| 234 | =cut | ||||
| 235 | |||||
| 236 | sub join { | ||||
| 237 | my $self = shift; | ||||
| 238 | return $self->catfile(@_); | ||||
| 239 | } | ||||
| 240 | |||||
| 241 | =item splitpath | ||||
| 242 | |||||
| 243 | ($volume,$directories,$file) = File::Spec->splitpath( $path ); | ||||
| 244 | ($volume,$directories,$file) = File::Spec->splitpath( $path, | ||||
| 245 | $no_file ); | ||||
| 246 | |||||
| 247 | Splits a path into volume, directory, and filename portions. On systems | ||||
| 248 | with no concept of volume, returns '' for volume. | ||||
| 249 | |||||
| 250 | For systems with no syntax differentiating filenames from directories, | ||||
| 251 | assumes that the last file is a path unless $no_file is true or a | ||||
| 252 | trailing separator or /. or /.. is present. On Unix this means that $no_file | ||||
| 253 | true makes this return ( '', $path, '' ). | ||||
| 254 | |||||
| 255 | The directory portion may or may not be returned with a trailing '/'. | ||||
| 256 | |||||
| 257 | The results can be passed to L</catpath()> to get back a path equivalent to | ||||
| 258 | (usually identical to) the original path. | ||||
| 259 | |||||
| 260 | =cut | ||||
| 261 | |||||
| 262 | sub splitpath { | ||||
| 263 | my ($self,$path, $nofile) = @_; | ||||
| 264 | |||||
| 265 | my ($volume,$directory,$file) = ('','',''); | ||||
| 266 | |||||
| 267 | if ( $nofile ) { | ||||
| 268 | $directory = $path; | ||||
| 269 | } | ||||
| 270 | else { | ||||
| 271 | $path =~ m|^ ( (?: .* / (?: \.\.?\z )? )? ) ([^/]*) |xs; | ||||
| 272 | $directory = $1; | ||||
| 273 | $file = $2; | ||||
| 274 | } | ||||
| 275 | |||||
| 276 | return ($volume,$directory,$file); | ||||
| 277 | } | ||||
| 278 | |||||
| 279 | |||||
| 280 | =item splitdir | ||||
| 281 | |||||
| 282 | The opposite of L</catdir()>. | ||||
| 283 | |||||
| 284 | @dirs = File::Spec->splitdir( $directories ); | ||||
| 285 | |||||
| 286 | $directories must be only the directory portion of the path on systems | ||||
| 287 | that have the concept of a volume or that have path syntax that differentiates | ||||
| 288 | files from directories. | ||||
| 289 | |||||
| 290 | Unlike just splitting the directories on the separator, empty | ||||
| 291 | directory names (C<''>) can be returned, because these are significant | ||||
| 292 | on some OSs. | ||||
| 293 | |||||
| 294 | On Unix, | ||||
| 295 | |||||
| 296 | File::Spec->splitdir( "/a/b//c/" ); | ||||
| 297 | |||||
| 298 | Yields: | ||||
| 299 | |||||
| 300 | ( '', 'a', 'b', '', 'c', '' ) | ||||
| 301 | |||||
| 302 | =cut | ||||
| 303 | |||||
| 304 | sub splitdir { | ||||
| 305 | return split m|/|, $_[1], -1; # Preserve trailing fields | ||||
| 306 | } | ||||
| 307 | |||||
| 308 | |||||
| 309 | =item catpath() | ||||
| 310 | |||||
| 311 | Takes volume, directory and file portions and returns an entire path. Under | ||||
| 312 | Unix, $volume is ignored, and directory and file are concatenated. A '/' is | ||||
| 313 | inserted if needed (though if the directory portion doesn't start with | ||||
| 314 | '/' it is not added). On other OSs, $volume is significant. | ||||
| 315 | |||||
| 316 | =cut | ||||
| 317 | |||||
| 318 | sub catpath { | ||||
| 319 | my ($self,$volume,$directory,$file) = @_; | ||||
| 320 | |||||
| 321 | if ( $directory ne '' && | ||||
| 322 | $file ne '' && | ||||
| 323 | substr( $directory, -1 ) ne '/' && | ||||
| 324 | substr( $file, 0, 1 ) ne '/' | ||||
| 325 | ) { | ||||
| 326 | $directory .= "/$file" ; | ||||
| 327 | } | ||||
| 328 | else { | ||||
| 329 | $directory .= $file ; | ||||
| 330 | } | ||||
| 331 | |||||
| 332 | return $directory ; | ||||
| 333 | } | ||||
| 334 | |||||
| 335 | =item abs2rel | ||||
| 336 | |||||
| 337 | Takes a destination path and an optional base path returns a relative path | ||||
| 338 | from the base path to the destination path: | ||||
| 339 | |||||
| 340 | $rel_path = File::Spec->abs2rel( $path ) ; | ||||
| 341 | $rel_path = File::Spec->abs2rel( $path, $base ) ; | ||||
| 342 | |||||
| 343 | If $base is not present or '', then L<cwd()|Cwd> is used. If $base is | ||||
| 344 | relative, then it is converted to absolute form using | ||||
| 345 | L</rel2abs()>. This means that it is taken to be relative to | ||||
| 346 | L<cwd()|Cwd>. | ||||
| 347 | |||||
| 348 | On systems that have a grammar that indicates filenames, this ignores the | ||||
| 349 | $base filename. Otherwise all path components are assumed to be | ||||
| 350 | directories. | ||||
| 351 | |||||
| 352 | If $path is relative, it is converted to absolute form using L</rel2abs()>. | ||||
| 353 | This means that it is taken to be relative to L<cwd()|Cwd>. | ||||
| 354 | |||||
| 355 | No checks against the filesystem are made, so the result may not be correct if | ||||
| 356 | C<$base> contains symbolic links. (Apply | ||||
| 357 | L<Cwd::abs_path()|Cwd/abs_path> beforehand if that | ||||
| 358 | is a concern.) On VMS, there is interaction with the working environment, as | ||||
| 359 | logicals and macros are expanded. | ||||
| 360 | |||||
| 361 | Based on code written by Shigio Yamaguchi. | ||||
| 362 | |||||
| 363 | =cut | ||||
| 364 | |||||
| 365 | sub abs2rel { | ||||
| 366 | my($self,$path,$base) = @_; | ||||
| 367 | $base = $self->_cwd() unless defined $base and length $base; | ||||
| 368 | |||||
| 369 | ($path, $base) = map $self->canonpath($_), $path, $base; | ||||
| 370 | |||||
| 371 | my $path_directories; | ||||
| 372 | my $base_directories; | ||||
| 373 | |||||
| 374 | if (grep $self->file_name_is_absolute($_), $path, $base) { | ||||
| 375 | ($path, $base) = map $self->rel2abs($_), $path, $base; | ||||
| 376 | |||||
| 377 | my ($path_volume) = $self->splitpath($path, 1); | ||||
| 378 | my ($base_volume) = $self->splitpath($base, 1); | ||||
| 379 | |||||
| 380 | # Can't relativize across volumes | ||||
| 381 | return $path unless $path_volume eq $base_volume; | ||||
| 382 | |||||
| 383 | $path_directories = ($self->splitpath($path, 1))[1]; | ||||
| 384 | $base_directories = ($self->splitpath($base, 1))[1]; | ||||
| 385 | |||||
| 386 | # For UNC paths, the user might give a volume like //foo/bar that | ||||
| 387 | # strictly speaking has no directory portion. Treat it as if it | ||||
| 388 | # had the root directory for that volume. | ||||
| 389 | if (!length($base_directories) and $self->file_name_is_absolute($base)) { | ||||
| 390 | $base_directories = $self->rootdir; | ||||
| 391 | } | ||||
| 392 | } | ||||
| 393 | else { | ||||
| 394 | my $wd= ($self->splitpath($self->_cwd(), 1))[1]; | ||||
| 395 | $path_directories = $self->catdir($wd, $path); | ||||
| 396 | $base_directories = $self->catdir($wd, $base); | ||||
| 397 | } | ||||
| 398 | |||||
| 399 | # Now, remove all leading components that are the same | ||||
| 400 | my @pathchunks = $self->splitdir( $path_directories ); | ||||
| 401 | my @basechunks = $self->splitdir( $base_directories ); | ||||
| 402 | |||||
| 403 | if ($base_directories eq $self->rootdir) { | ||||
| 404 | return $self->curdir if $path_directories eq $self->rootdir; | ||||
| 405 | shift @pathchunks; | ||||
| 406 | return $self->canonpath( $self->catpath('', $self->catdir( @pathchunks ), '') ); | ||||
| 407 | } | ||||
| 408 | |||||
| 409 | my @common; | ||||
| 410 | while (@pathchunks && @basechunks && $self->_same($pathchunks[0], $basechunks[0])) { | ||||
| 411 | push @common, shift @pathchunks ; | ||||
| 412 | shift @basechunks ; | ||||
| 413 | } | ||||
| 414 | return $self->curdir unless @pathchunks || @basechunks; | ||||
| 415 | |||||
| 416 | # @basechunks now contains the directories the resulting relative path | ||||
| 417 | # must ascend out of before it can descend to $path_directory. If there | ||||
| 418 | # are updir components, we must descend into the corresponding directories | ||||
| 419 | # (this only works if they are no symlinks). | ||||
| 420 | my @reverse_base; | ||||
| 421 | while( defined(my $dir= shift @basechunks) ) { | ||||
| 422 | if( $dir ne $self->updir ) { | ||||
| 423 | unshift @reverse_base, $self->updir; | ||||
| 424 | push @common, $dir; | ||||
| 425 | } | ||||
| 426 | elsif( @common ) { | ||||
| 427 | if( @reverse_base && $reverse_base[0] eq $self->updir ) { | ||||
| 428 | shift @reverse_base; | ||||
| 429 | pop @common; | ||||
| 430 | } | ||||
| 431 | else { | ||||
| 432 | unshift @reverse_base, pop @common; | ||||
| 433 | } | ||||
| 434 | } | ||||
| 435 | } | ||||
| 436 | my $result_dirs = $self->catdir( @reverse_base, @pathchunks ); | ||||
| 437 | return $self->canonpath( $self->catpath('', $result_dirs, '') ); | ||||
| 438 | } | ||||
| 439 | |||||
| 440 | sub _same { | ||||
| 441 | $_[1] eq $_[2]; | ||||
| 442 | } | ||||
| 443 | |||||
| 444 | =item rel2abs() | ||||
| 445 | |||||
| 446 | Converts a relative path to an absolute path. | ||||
| 447 | |||||
| 448 | $abs_path = File::Spec->rel2abs( $path ) ; | ||||
| 449 | $abs_path = File::Spec->rel2abs( $path, $base ) ; | ||||
| 450 | |||||
| 451 | If $base is not present or '', then L<cwd()|Cwd> is used. If $base is | ||||
| 452 | relative, then it is converted to absolute form using | ||||
| 453 | L</rel2abs()>. This means that it is taken to be relative to | ||||
| 454 | L<cwd()|Cwd>. | ||||
| 455 | |||||
| 456 | On systems that have a grammar that indicates filenames, this ignores | ||||
| 457 | the $base filename. Otherwise all path components are assumed to be | ||||
| 458 | directories. | ||||
| 459 | |||||
| 460 | If $path is absolute, it is cleaned up and returned using L</canonpath()>. | ||||
| 461 | |||||
| 462 | No checks against the filesystem are made. On VMS, there is | ||||
| 463 | interaction with the working environment, as logicals and | ||||
| 464 | macros are expanded. | ||||
| 465 | |||||
| 466 | Based on code written by Shigio Yamaguchi. | ||||
| 467 | |||||
| 468 | =cut | ||||
| 469 | |||||
| 470 | sub rel2abs { | ||||
| 471 | my ($self,$path,$base ) = @_; | ||||
| 472 | |||||
| 473 | # Clean up $path | ||||
| 474 | if ( ! $self->file_name_is_absolute( $path ) ) { | ||||
| 475 | # Figure out the effective $base and clean it up. | ||||
| 476 | if ( !defined( $base ) || $base eq '' ) { | ||||
| 477 | $base = $self->_cwd(); | ||||
| 478 | } | ||||
| 479 | elsif ( ! $self->file_name_is_absolute( $base ) ) { | ||||
| 480 | $base = $self->rel2abs( $base ) ; | ||||
| 481 | } | ||||
| 482 | else { | ||||
| 483 | $base = $self->canonpath( $base ) ; | ||||
| 484 | } | ||||
| 485 | |||||
| 486 | # Glom them together | ||||
| 487 | $path = $self->catdir( $base, $path ) ; | ||||
| 488 | } | ||||
| 489 | |||||
| 490 | return $self->canonpath( $path ) ; | ||||
| 491 | } | ||||
| 492 | |||||
| 493 | =back | ||||
| 494 | |||||
| 495 | =head1 COPYRIGHT | ||||
| 496 | |||||
| 497 | Copyright (c) 2004 by the Perl 5 Porters. All rights reserved. | ||||
| 498 | |||||
| 499 | This program is free software; you can redistribute it and/or modify | ||||
| 500 | it under the same terms as Perl itself. | ||||
| 501 | |||||
| 502 | Please submit bug reports and patches to perlbug@perl.org. | ||||
| 503 | |||||
| 504 | =head1 SEE ALSO | ||||
| 505 | |||||
| 506 | L<File::Spec> | ||||
| 507 | |||||
| 508 | =cut | ||||
| 509 | |||||
| 510 | # Internal routine to File::Spec, no point in making this public since | ||||
| 511 | # it is the standard Cwd interface. Most of the platform-specific | ||||
| 512 | # File::Spec subclasses use this. | ||||
| 513 | sub _cwd { | ||||
| 514 | require Cwd; | ||||
| 515 | Cwd::getcwd(); | ||||
| 516 | } | ||||
| 517 | |||||
| 518 | |||||
| 519 | # Internal method to reduce xx\..\yy -> yy | ||||
| 520 | sub _collapse { | ||||
| 521 | my($fs, $path) = @_; | ||||
| 522 | |||||
| 523 | my $updir = $fs->updir; | ||||
| 524 | my $curdir = $fs->curdir; | ||||
| 525 | |||||
| 526 | my($vol, $dirs, $file) = $fs->splitpath($path); | ||||
| 527 | my @dirs = $fs->splitdir($dirs); | ||||
| 528 | pop @dirs if @dirs && $dirs[-1] eq ''; | ||||
| 529 | |||||
| 530 | my @collapsed; | ||||
| 531 | foreach my $dir (@dirs) { | ||||
| 532 | if( $dir eq $updir and # if we have an updir | ||||
| 533 | @collapsed and # and something to collapse | ||||
| 534 | length $collapsed[-1] and # and its not the rootdir | ||||
| 535 | $collapsed[-1] ne $updir and # nor another updir | ||||
| 536 | $collapsed[-1] ne $curdir # nor the curdir | ||||
| 537 | ) | ||||
| 538 | { # then | ||||
| 539 | pop @collapsed; # collapse | ||||
| 540 | } | ||||
| 541 | else { # else | ||||
| 542 | push @collapsed, $dir; # just hang onto it | ||||
| 543 | } | ||||
| 544 | } | ||||
| 545 | |||||
| 546 | return $fs->catpath($vol, | ||||
| 547 | $fs->catdir(@collapsed), | ||||
| 548 | $file | ||||
| 549 | ); | ||||
| 550 | } | ||||
| 551 | |||||
| 552 | |||||
| 553 | 1 | 2µs | 1; | ||
# spent 500ns within File::Spec::Unix::CORE:match which was called:
# once (500ns+0s) by File::Spec::Unix::file_name_is_absolute at line 214 | |||||
# spent 5µs within File::Spec::Unix::CORE:subst which was called 12 times, avg 400ns/call:
# 2 times (2µs+0s) by File::Spec::Unix::canonpath at line 69, avg 900ns/call
# 2 times (1µs+0s) by File::Spec::Unix::canonpath at line 64, avg 500ns/call
# 2 times (600ns+0s) by File::Spec::Unix::canonpath at line 66, avg 300ns/call
# 2 times (600ns+0s) by File::Spec::Unix::canonpath at line 65, avg 300ns/call
# 2 times (400ns+0s) by File::Spec::Unix::canonpath at line 67, avg 200ns/call
# 2 times (400ns+0s) by File::Spec::Unix::canonpath at line 68, avg 200ns/call |