| Filename | /usr/lib/x86_64-linux-gnu/perl/5.20/File/Spec/Unix.pm |
| Statements | Executed 0 statements in 0s |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package File::Spec::Unix; | ||||
| 2 | |||||
| 3 | use strict; | ||||
| 4 | use vars qw($VERSION); | ||||
| 5 | |||||
| 6 | $VERSION = '3.48_01'; | ||||
| 7 | my $xs_version = $VERSION; | ||||
| 8 | $VERSION =~ tr/_//; | ||||
| 9 | |||||
| 10 | unless (defined &canonpath) { | ||||
| 11 | eval { | ||||
| 12 | if ( $] >= 5.006 ) { | ||||
| 13 | require XSLoader; | ||||
| 14 | XSLoader::load("Cwd", $xs_version); | ||||
| 15 | } else { | ||||
| 16 | require Cwd; | ||||
| 17 | } | ||||
| 18 | }; | ||||
| 19 | } | ||||
| 20 | |||||
| 21 | sub _pp_canonpath { | ||||
| 22 | my ($self,$path) = @_; | ||||
| 23 | return unless defined $path; | ||||
| 24 | |||||
| 25 | # Handle POSIX-style node names beginning with double slash (qnx, nto) | ||||
| 26 | # (POSIX says: "a pathname that begins with two successive slashes | ||||
| 27 | # may be interpreted in an implementation-defined manner, although | ||||
| 28 | # more than two leading slashes shall be treated as a single slash.") | ||||
| 29 | my $node = ''; | ||||
| 30 | my $double_slashes_special = $^O eq 'qnx' || $^O eq 'nto'; | ||||
| 31 | |||||
| 32 | if ( $double_slashes_special | ||||
| 33 | && ( $path =~ s{^(//[^/]+)/?\z}{}s || $path =~ s{^(//[^/]+)/}{/}s ) ) { | ||||
| 34 | $node = $1; | ||||
| 35 | } | ||||
| 36 | # This used to be | ||||
| 37 | # $path =~ s|/+|/|g unless ($^O eq 'cygwin'); | ||||
| 38 | # but that made tests 29, 30, 35, 46, and 213 (as of #13272) to fail | ||||
| 39 | # (Mainly because trailing "" directories didn't get stripped). | ||||
| 40 | # Why would cygwin avoid collapsing multiple slashes into one? --jhi | ||||
| 41 | $path =~ s|/{2,}|/|g; # xx////xx -> xx/xx | ||||
| 42 | $path =~ s{(?:/\.)+(?:/|\z)}{/}g; # xx/././xx -> xx/xx | ||||
| 43 | $path =~ s|^(?:\./)+||s unless $path eq "./"; # ./xx -> xx | ||||
| 44 | $path =~ s|^/(?:\.\./)+|/|; # /../../xx -> xx | ||||
| 45 | $path =~ s|^/\.\.$|/|; # /.. -> / | ||||
| 46 | $path =~ s|/\z|| unless $path eq "/"; # xx/ -> xx | ||||
| 47 | return "$node$path"; | ||||
| 48 | } | ||||
| 49 | *canonpath = \&_pp_canonpath unless defined &canonpath; | ||||
| 50 | |||||
| 51 | sub _pp_catdir { | ||||
| 52 | my $self = shift; | ||||
| 53 | |||||
| 54 | $self->canonpath(join('/', @_, '')); # '' because need a trailing '/' | ||||
| 55 | } | ||||
| 56 | *catdir = \&_pp_catdir unless defined &catdir; | ||||
| 57 | |||||
| 58 | sub _pp_catfile { | ||||
| 59 | my $self = shift; | ||||
| 60 | my $file = $self->canonpath(pop @_); | ||||
| 61 | return $file unless @_; | ||||
| 62 | my $dir = $self->catdir(@_); | ||||
| 63 | $dir .= "/" unless substr($dir,-1) eq "/"; | ||||
| 64 | return $dir.$file; | ||||
| 65 | } | ||||
| 66 | *catfile = \&_pp_catfile unless defined &catfile; | ||||
| 67 | |||||
| 68 | sub curdir { '.' } | ||||
| 69 | use constant _fn_curdir => "."; | ||||
| 70 | |||||
| 71 | sub devnull { '/dev/null' } | ||||
| 72 | use constant _fn_devnull => "/dev/null"; | ||||
| 73 | |||||
| 74 | sub rootdir { '/' } | ||||
| 75 | use constant _fn_rootdir => "/"; | ||||
| 76 | |||||
| 77 | my ($tmpdir, %tmpenv); | ||||
| 78 | # Cache and return the calculated tmpdir, recording which env vars | ||||
| 79 | # determined it. | ||||
| 80 | sub _cache_tmpdir { | ||||
| 81 | @tmpenv{@_[2..$#_]} = @ENV{@_[2..$#_]}; | ||||
| 82 | return $tmpdir = $_[1]; | ||||
| 83 | } | ||||
| 84 | # Retrieve the cached tmpdir, checking first whether relevant env vars have | ||||
| 85 | # changed and invalidated the cache. | ||||
| 86 | sub _cached_tmpdir { | ||||
| 87 | shift; | ||||
| 88 | local $^W; | ||||
| 89 | return if grep $ENV{$_} ne $tmpenv{$_}, @_; | ||||
| 90 | return $tmpdir; | ||||
| 91 | } | ||||
| 92 | sub _tmpdir { | ||||
| 93 | my $self = shift; | ||||
| 94 | my @dirlist = @_; | ||||
| 95 | my $taint = do { no strict 'refs'; ${"\cTAINT"} }; | ||||
| 96 | if ($taint) { # Check for taint mode on perl >= 5.8.0 | ||||
| 97 | require Scalar::Util; | ||||
| 98 | @dirlist = grep { ! Scalar::Util::tainted($_) } @dirlist; | ||||
| 99 | } | ||||
| 100 | elsif ($] < 5.007) { # No ${^TAINT} before 5.8 | ||||
| 101 | @dirlist = grep { eval { eval('1'.substr $_,0,0) } } @dirlist; | ||||
| 102 | } | ||||
| 103 | |||||
| 104 | foreach (@dirlist) { | ||||
| 105 | next unless defined && -d && -w _; | ||||
| 106 | $tmpdir = $_; | ||||
| 107 | last; | ||||
| 108 | } | ||||
| 109 | $tmpdir = $self->curdir unless defined $tmpdir; | ||||
| 110 | $tmpdir = defined $tmpdir && $self->canonpath($tmpdir); | ||||
| 111 | if ( !$self->file_name_is_absolute($tmpdir) ) { | ||||
| 112 | # See [perl #120593] for the full details | ||||
| 113 | # If possible, return a full path, rather than '.' or 'lib', but | ||||
| 114 | # jump through some hoops to avoid returning a tainted value. | ||||
| 115 | ($tmpdir) = grep { | ||||
| 116 | $taint ? ! Scalar::Util::tainted($_) : | ||||
| 117 | $] < 5.007 ? eval { eval('1'.substr $_,0,0) } : 1 | ||||
| 118 | } $self->rel2abs($tmpdir), $tmpdir; | ||||
| 119 | } | ||||
| 120 | return $tmpdir; | ||||
| 121 | } | ||||
| 122 | |||||
| 123 | sub tmpdir { | ||||
| 124 | my $cached = $_[0]->_cached_tmpdir('TMPDIR'); | ||||
| 125 | return $cached if defined $cached; | ||||
| 126 | $_[0]->_cache_tmpdir($_[0]->_tmpdir( $ENV{TMPDIR}, "/tmp" ), 'TMPDIR'); | ||||
| 127 | } | ||||
| 128 | |||||
| 129 | sub updir { '..' } | ||||
| 130 | use constant _fn_updir => ".."; | ||||
| 131 | |||||
| 132 | sub no_upwards { | ||||
| 133 | my $self = shift; | ||||
| 134 | return grep(!/^\.{1,2}\z/s, @_); | ||||
| 135 | } | ||||
| 136 | |||||
| 137 | sub case_tolerant { 0 } | ||||
| 138 | use constant _fn_case_tolerant => 0; | ||||
| 139 | |||||
| 140 | sub file_name_is_absolute { | ||||
| 141 | my ($self,$file) = @_; | ||||
| 142 | return scalar($file =~ m:^/:s); | ||||
| 143 | } | ||||
| 144 | |||||
| 145 | sub path { | ||||
| 146 | return () unless exists $ENV{PATH}; | ||||
| 147 | my @path = split(':', $ENV{PATH}); | ||||
| 148 | foreach (@path) { $_ = '.' if $_ eq '' } | ||||
| 149 | return @path; | ||||
| 150 | } | ||||
| 151 | |||||
| 152 | sub join { | ||||
| 153 | my $self = shift; | ||||
| 154 | return $self->catfile(@_); | ||||
| 155 | } | ||||
| 156 | |||||
| 157 | sub splitpath { | ||||
| 158 | my ($self,$path, $nofile) = @_; | ||||
| 159 | |||||
| 160 | my ($volume,$directory,$file) = ('','',''); | ||||
| 161 | |||||
| 162 | if ( $nofile ) { | ||||
| 163 | $directory = $path; | ||||
| 164 | } | ||||
| 165 | else { | ||||
| 166 | $path =~ m|^ ( (?: .* / (?: \.\.?\z )? )? ) ([^/]*) |xs; | ||||
| 167 | $directory = $1; | ||||
| 168 | $file = $2; | ||||
| 169 | } | ||||
| 170 | |||||
| 171 | return ($volume,$directory,$file); | ||||
| 172 | } | ||||
| 173 | |||||
| 174 | sub splitdir { | ||||
| 175 | return split m|/|, $_[1], -1; # Preserve trailing fields | ||||
| 176 | } | ||||
| 177 | |||||
| 178 | sub catpath { | ||||
| 179 | my ($self,$volume,$directory,$file) = @_; | ||||
| 180 | |||||
| 181 | if ( $directory ne '' && | ||||
| 182 | $file ne '' && | ||||
| 183 | substr( $directory, -1 ) ne '/' && | ||||
| 184 | substr( $file, 0, 1 ) ne '/' | ||||
| 185 | ) { | ||||
| 186 | $directory .= "/$file" ; | ||||
| 187 | } | ||||
| 188 | else { | ||||
| 189 | $directory .= $file ; | ||||
| 190 | } | ||||
| 191 | |||||
| 192 | return $directory ; | ||||
| 193 | } | ||||
| 194 | |||||
| 195 | sub abs2rel { | ||||
| 196 | my($self,$path,$base) = @_; | ||||
| 197 | $base = $self->_cwd() unless defined $base and length $base; | ||||
| 198 | |||||
| 199 | ($path, $base) = map $self->canonpath($_), $path, $base; | ||||
| 200 | |||||
| 201 | my $path_directories; | ||||
| 202 | my $base_directories; | ||||
| 203 | |||||
| 204 | if (grep $self->file_name_is_absolute($_), $path, $base) { | ||||
| 205 | ($path, $base) = map $self->rel2abs($_), $path, $base; | ||||
| 206 | |||||
| 207 | my ($path_volume) = $self->splitpath($path, 1); | ||||
| 208 | my ($base_volume) = $self->splitpath($base, 1); | ||||
| 209 | |||||
| 210 | # Can't relativize across volumes | ||||
| 211 | return $path unless $path_volume eq $base_volume; | ||||
| 212 | |||||
| 213 | $path_directories = ($self->splitpath($path, 1))[1]; | ||||
| 214 | $base_directories = ($self->splitpath($base, 1))[1]; | ||||
| 215 | |||||
| 216 | # For UNC paths, the user might give a volume like //foo/bar that | ||||
| 217 | # strictly speaking has no directory portion. Treat it as if it | ||||
| 218 | # had the root directory for that volume. | ||||
| 219 | if (!length($base_directories) and $self->file_name_is_absolute($base)) { | ||||
| 220 | $base_directories = $self->rootdir; | ||||
| 221 | } | ||||
| 222 | } | ||||
| 223 | else { | ||||
| 224 | my $wd= ($self->splitpath($self->_cwd(), 1))[1]; | ||||
| 225 | 174 | 150µs | $path_directories = $self->catdir($wd, $path); # spent 150µs making 174 calls to File::Spec::Unix::canonpath, avg 861ns/call | ||
| 226 | 174 | 106µs | $base_directories = $self->catdir($wd, $base); # spent 106µs making 174 calls to File::Spec::Unix::canonpath, avg 612ns/call | ||
| 227 | } | ||||
| 228 | |||||
| 229 | # Now, remove all leading components that are the same | ||||
| 230 | my @pathchunks = $self->splitdir( $path_directories ); | ||||
| 231 | my @basechunks = $self->splitdir( $base_directories ); | ||||
| 232 | |||||
| 233 | if ($base_directories eq $self->rootdir) { | ||||
| 234 | return $self->curdir if $path_directories eq $self->rootdir; | ||||
| 235 | shift @pathchunks; | ||||
| 236 | return $self->canonpath( $self->catpath('', $self->catdir( @pathchunks ), '') ); | ||||
| 237 | } | ||||
| 238 | |||||
| 239 | my @common; | ||||
| 240 | while (@pathchunks && @basechunks && $self->_same($pathchunks[0], $basechunks[0])) { | ||||
| 241 | push @common, shift @pathchunks ; | ||||
| 242 | shift @basechunks ; | ||||
| 243 | } | ||||
| 244 | return $self->curdir unless @pathchunks || @basechunks; | ||||
| 245 | |||||
| 246 | # @basechunks now contains the directories the resulting relative path | ||||
| 247 | # must ascend out of before it can descend to $path_directory. If there | ||||
| 248 | # are updir components, we must descend into the corresponding directories | ||||
| 249 | # (this only works if they are no symlinks). | ||||
| 250 | my @reverse_base; | ||||
| 251 | while( defined(my $dir= shift @basechunks) ) { | ||||
| 252 | if( $dir ne $self->updir ) { | ||||
| 253 | unshift @reverse_base, $self->updir; | ||||
| 254 | push @common, $dir; | ||||
| 255 | } | ||||
| 256 | elsif( @common ) { | ||||
| 257 | if( @reverse_base && $reverse_base[0] eq $self->updir ) { | ||||
| 258 | shift @reverse_base; | ||||
| 259 | pop @common; | ||||
| 260 | } | ||||
| 261 | else { | ||||
| 262 | unshift @reverse_base, pop @common; | ||||
| 263 | } | ||||
| 264 | } | ||||
| 265 | } | ||||
| 266 | 517 | 3.64ms | my $result_dirs = $self->catdir( @reverse_base, @pathchunks ); # spent 3.64ms making 517 calls to File::Spec::Unix::canonpath, avg 7µs/call | ||
| 267 | return $self->canonpath( $self->catpath('', $result_dirs, '') ); | ||||
| 268 | } | ||||
| 269 | |||||
| 270 | sub _same { | ||||
| 271 | $_[1] eq $_[2]; | ||||
| 272 | } | ||||
| 273 | |||||
| 274 | sub rel2abs { | ||||
| 275 | my ($self,$path,$base ) = @_; | ||||
| 276 | |||||
| 277 | # Clean up $path | ||||
| 278 | if ( ! $self->file_name_is_absolute( $path ) ) { | ||||
| 279 | # Figure out the effective $base and clean it up. | ||||
| 280 | if ( !defined( $base ) || $base eq '' ) { | ||||
| 281 | $base = $self->_cwd(); | ||||
| 282 | } | ||||
| 283 | elsif ( ! $self->file_name_is_absolute( $base ) ) { | ||||
| 284 | $base = $self->rel2abs( $base ) ; | ||||
| 285 | } | ||||
| 286 | else { | ||||
| 287 | $base = $self->canonpath( $base ) ; | ||||
| 288 | } | ||||
| 289 | |||||
| 290 | # Glom them together | ||||
| 291 | $path = $self->catdir( $base, $path ) ; | ||||
| 292 | } | ||||
| 293 | |||||
| 294 | return $self->canonpath( $path ) ; | ||||
| 295 | } | ||||
| 296 | |||||
| 297 | # Internal routine to File::Spec, no point in making this public since | ||||
| 298 | # it is the standard Cwd interface. Most of the platform-specific | ||||
| 299 | # File::Spec subclasses use this. | ||||
| 300 | sub _cwd { | ||||
| 301 | require Cwd; | ||||
| 302 | Cwd::getcwd(); | ||||
| 303 | } | ||||
| 304 | |||||
| 305 | # Internal method to reduce xx\..\yy -> yy | ||||
| 306 | sub _collapse { | ||||
| 307 | my($fs, $path) = @_; | ||||
| 308 | |||||
| 309 | my $updir = $fs->updir; | ||||
| 310 | my $curdir = $fs->curdir; | ||||
| 311 | |||||
| 312 | my($vol, $dirs, $file) = $fs->splitpath($path); | ||||
| 313 | my @dirs = $fs->splitdir($dirs); | ||||
| 314 | pop @dirs if @dirs && $dirs[-1] eq ''; | ||||
| 315 | |||||
| 316 | my @collapsed; | ||||
| 317 | foreach my $dir (@dirs) { | ||||
| 318 | if( $dir eq $updir and # if we have an updir | ||||
| 319 | @collapsed and # and something to collapse | ||||
| 320 | length $collapsed[-1] and # and its not the rootdir | ||||
| 321 | $collapsed[-1] ne $updir and # nor another updir | ||||
| 322 | $collapsed[-1] ne $curdir # nor the curdir | ||||
| 323 | ) | ||||
| 324 | { # then | ||||
| 325 | pop @collapsed; # collapse | ||||
| 326 | } | ||||
| 327 | else { # else | ||||
| 328 | push @collapsed, $dir; # just hang onto it | ||||
| 329 | } | ||||
| 330 | } | ||||
| 331 | |||||
| 332 | return $fs->catpath($vol, | ||||
| 333 | $fs->catdir(@collapsed), | ||||
| 334 | $file | ||||
| 335 | ); | ||||
| 336 | } | ||||
| 337 | |||||
| 338 | 1; |