| Filename | /home/micha/.plenv/versions/5.38.2/lib/perl5/5.38.2/x86_64-linux/Cwd.pm |
| Statements | Executed 45 statements in 2.22ms |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 8µs | 10µs | Cwd::BEGIN@2 |
| 1 | 1 | 1 | 7µs | 20µs | Cwd::BEGIN@3 |
| 1 | 1 | 1 | 7µs | 12µs | Cwd::BEGIN@644 |
| 1 | 1 | 1 | 2µs | 2µs | Cwd::BEGIN@41 |
| 0 | 0 | 0 | 0s | 0s | Cwd::__ANON__[:222] |
| 0 | 0 | 0 | 0s | 0s | Cwd::__ANON__[:231] |
| 0 | 0 | 0 | 0s | 0s | Cwd::_backtick_pwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_carp |
| 0 | 0 | 0 | 0s | 0s | Cwd::_croak |
| 0 | 0 | 0 | 0s | 0s | Cwd::_dos_cwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_os2_cwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_perl_abs_path |
| 0 | 0 | 0 | 0s | 0s | Cwd::_perl_getcwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_qnx_abs_path |
| 0 | 0 | 0 | 0s | 0s | Cwd::_qnx_cwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_vms_abs_path |
| 0 | 0 | 0 | 0s | 0s | Cwd::_vms_cwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_vms_efs |
| 0 | 0 | 0 | 0s | 0s | Cwd::_vms_unix_rpt |
| 0 | 0 | 0 | 0s | 0s | Cwd::_win32_cwd |
| 0 | 0 | 0 | 0s | 0s | Cwd::_win32_cwd_simple |
| 0 | 0 | 0 | 0s | 0s | Cwd::chdir |
| 0 | 0 | 0 | 0s | 0s | Cwd::chdir_init |
| 0 | 0 | 0 | 0s | 0s | Cwd::fast_abs_path |
| 0 | 0 | 0 | 0s | 0s | Cwd::fastcwd_ |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package Cwd; | ||||
| 2 | 2 | 21µs | 2 | 11µs | # spent 10µs (8+1) within Cwd::BEGIN@2 which was called:
# once (8µs+1µs) by Archive::Zip::BEGIN@6 at line 2 # spent 10µs making 1 call to Cwd::BEGIN@2
# spent 1µs making 1 call to strict::import |
| 3 | 2 | 146µs | 2 | 33µs | # spent 20µs (7+13) within Cwd::BEGIN@3 which was called:
# once (7µs+13µs) by Archive::Zip::BEGIN@6 at line 3 # spent 20µs making 1 call to Cwd::BEGIN@3
# spent 13µs making 1 call to Exporter::import |
| 4 | |||||
| 5 | |||||
| 6 | 1 | 300ns | our $VERSION = '3.89'; | ||
| 7 | 1 | 200ns | my $xs_version = $VERSION; | ||
| 8 | 1 | 800ns | $VERSION =~ tr/_//d; | ||
| 9 | |||||
| 10 | 1 | 6µs | our @ISA = qw/ Exporter /; | ||
| 11 | 1 | 600ns | our @EXPORT = qw(cwd getcwd fastcwd fastgetcwd); | ||
| 12 | 1 | 700ns | push @EXPORT, qw(getdcwd) if $^O eq 'MSWin32'; | ||
| 13 | 1 | 400ns | our @EXPORT_OK = qw(chdir abs_path fast_abs_path realpath fast_realpath); | ||
| 14 | |||||
| 15 | # sys_cwd may keep the builtin command | ||||
| 16 | |||||
| 17 | # All the functionality of this module may provided by builtins, | ||||
| 18 | # there is no sense to process the rest of the file. | ||||
| 19 | # The best choice may be to have this in BEGIN, but how to return from BEGIN? | ||||
| 20 | |||||
| 21 | 1 | 200ns | if ($^O eq 'os2') { | ||
| 22 | local $^W = 0; | ||||
| 23 | |||||
| 24 | *cwd = defined &sys_cwd ? \&sys_cwd : \&_os2_cwd; | ||||
| 25 | *getcwd = \&cwd; | ||||
| 26 | *fastgetcwd = \&cwd; | ||||
| 27 | *fastcwd = \&cwd; | ||||
| 28 | |||||
| 29 | *fast_abs_path = \&sys_abspath if defined &sys_abspath; | ||||
| 30 | *abs_path = \&fast_abs_path; | ||||
| 31 | *realpath = \&fast_abs_path; | ||||
| 32 | *fast_realpath = \&fast_abs_path; | ||||
| 33 | |||||
| 34 | return 1; | ||||
| 35 | } | ||||
| 36 | |||||
| 37 | # Need to look up the feature settings on VMS. The preferred way is to use the | ||||
| 38 | # VMS::Feature module, but that may not be available to dual life modules. | ||||
| 39 | |||||
| 40 | 1 | 100ns | my $use_vms_feature; | ||
| 41 | # spent 2µs within Cwd::BEGIN@41 which was called:
# once (2µs+0s) by Archive::Zip::BEGIN@6 at line 50 | ||||
| 42 | 1 | 4µs | if ($^O eq 'VMS') { | ||
| 43 | if (eval { local $SIG{__DIE__}; | ||||
| 44 | local @INC = @INC; | ||||
| 45 | pop @INC if $INC[-1] eq '.'; | ||||
| 46 | require VMS::Feature; }) { | ||||
| 47 | $use_vms_feature = 1; | ||||
| 48 | } | ||||
| 49 | } | ||||
| 50 | 1 | 1.76ms | 1 | 2µs | } # spent 2µs making 1 call to Cwd::BEGIN@41 |
| 51 | |||||
| 52 | # Need to look up the UNIX report mode. This may become a dynamic mode | ||||
| 53 | # in the future. | ||||
| 54 | sub _vms_unix_rpt { | ||||
| 55 | my $unix_rpt; | ||||
| 56 | if ($use_vms_feature) { | ||||
| 57 | $unix_rpt = VMS::Feature::current("filename_unix_report"); | ||||
| 58 | } else { | ||||
| 59 | my $env_unix_rpt = $ENV{'DECC$FILENAME_UNIX_REPORT'} || ''; | ||||
| 60 | $unix_rpt = $env_unix_rpt =~ /^[ET1]/i; | ||||
| 61 | } | ||||
| 62 | return $unix_rpt; | ||||
| 63 | } | ||||
| 64 | |||||
| 65 | # Need to look up the EFS character set mode. This may become a dynamic | ||||
| 66 | # mode in the future. | ||||
| 67 | sub _vms_efs { | ||||
| 68 | my $efs; | ||||
| 69 | if ($use_vms_feature) { | ||||
| 70 | $efs = VMS::Feature::current("efs_charset"); | ||||
| 71 | } else { | ||||
| 72 | my $env_efs = $ENV{'DECC$EFS_CHARSET'} || ''; | ||||
| 73 | $efs = $env_efs =~ /^[ET1]/i; | ||||
| 74 | } | ||||
| 75 | return $efs; | ||||
| 76 | } | ||||
| 77 | |||||
| 78 | |||||
| 79 | # If loading the XS stuff doesn't work, we can fall back to pure perl | ||||
| 80 | 1 | 2µs | if(! defined &getcwd && defined &DynaLoader::boot_DynaLoader) { # skipped on miniperl | ||
| 81 | 1 | 400ns | require XSLoader; | ||
| 82 | 1 | 119µs | 1 | 115µs | XSLoader::load( __PACKAGE__, $xs_version); # spent 115µs making 1 call to XSLoader::load |
| 83 | } | ||||
| 84 | |||||
| 85 | # Big nasty table of function aliases | ||||
| 86 | 1 | 6µs | my %METHOD_MAP = | ||
| 87 | ( | ||||
| 88 | VMS => | ||||
| 89 | { | ||||
| 90 | cwd => '_vms_cwd', | ||||
| 91 | getcwd => '_vms_cwd', | ||||
| 92 | fastcwd => '_vms_cwd', | ||||
| 93 | fastgetcwd => '_vms_cwd', | ||||
| 94 | abs_path => '_vms_abs_path', | ||||
| 95 | fast_abs_path => '_vms_abs_path', | ||||
| 96 | }, | ||||
| 97 | |||||
| 98 | MSWin32 => | ||||
| 99 | { | ||||
| 100 | # We assume that &_NT_cwd is defined as an XSUB or in the core. | ||||
| 101 | cwd => '_NT_cwd', | ||||
| 102 | getcwd => '_NT_cwd', | ||||
| 103 | fastcwd => '_NT_cwd', | ||||
| 104 | fastgetcwd => '_NT_cwd', | ||||
| 105 | abs_path => 'fast_abs_path', | ||||
| 106 | realpath => 'fast_abs_path', | ||||
| 107 | }, | ||||
| 108 | |||||
| 109 | dos => | ||||
| 110 | { | ||||
| 111 | cwd => '_dos_cwd', | ||||
| 112 | getcwd => '_dos_cwd', | ||||
| 113 | fastgetcwd => '_dos_cwd', | ||||
| 114 | fastcwd => '_dos_cwd', | ||||
| 115 | abs_path => 'fast_abs_path', | ||||
| 116 | }, | ||||
| 117 | |||||
| 118 | # QNX4. QNX6 has a $os of 'nto'. | ||||
| 119 | qnx => | ||||
| 120 | { | ||||
| 121 | cwd => '_qnx_cwd', | ||||
| 122 | getcwd => '_qnx_cwd', | ||||
| 123 | fastgetcwd => '_qnx_cwd', | ||||
| 124 | fastcwd => '_qnx_cwd', | ||||
| 125 | abs_path => '_qnx_abs_path', | ||||
| 126 | fast_abs_path => '_qnx_abs_path', | ||||
| 127 | }, | ||||
| 128 | |||||
| 129 | cygwin => | ||||
| 130 | { | ||||
| 131 | getcwd => 'cwd', | ||||
| 132 | fastgetcwd => 'cwd', | ||||
| 133 | fastcwd => 'cwd', | ||||
| 134 | abs_path => 'fast_abs_path', | ||||
| 135 | realpath => 'fast_abs_path', | ||||
| 136 | }, | ||||
| 137 | |||||
| 138 | amigaos => | ||||
| 139 | { | ||||
| 140 | getcwd => '_backtick_pwd', | ||||
| 141 | fastgetcwd => '_backtick_pwd', | ||||
| 142 | fastcwd => '_backtick_pwd', | ||||
| 143 | abs_path => 'fast_abs_path', | ||||
| 144 | } | ||||
| 145 | ); | ||||
| 146 | |||||
| 147 | 1 | 600ns | $METHOD_MAP{NT} = $METHOD_MAP{MSWin32}; | ||
| 148 | |||||
| 149 | |||||
| 150 | # Find the pwd command in the expected locations. We assume these | ||||
| 151 | # are safe. This prevents _backtick_pwd() consulting $ENV{PATH} | ||||
| 152 | # so everything works under taint mode. | ||||
| 153 | 1 | 100ns | my $pwd_cmd; | ||
| 154 | 1 | 1µs | if($^O ne 'MSWin32') { | ||
| 155 | 1 | 300ns | foreach my $try ('/bin/pwd', | ||
| 156 | '/usr/bin/pwd', | ||||
| 157 | '/QOpenSys/bin/pwd', # OS/400 PASE. | ||||
| 158 | ) { | ||||
| 159 | 1 | 12µs | 1 | 8µs | if( -x $try ) { # spent 8µs making 1 call to CORE::fteexec |
| 160 | 1 | 200ns | $pwd_cmd = $try; | ||
| 161 | 1 | 700ns | last; | ||
| 162 | } | ||||
| 163 | } | ||||
| 164 | } | ||||
| 165 | |||||
| 166 | # Android has a built-in pwd. Using $pwd_cmd will DTRT if | ||||
| 167 | # this perl was compiled with -Dd_useshellcmds, which is the | ||||
| 168 | # default for Android, but the block below is needed for the | ||||
| 169 | # miniperl running on the host when cross-compiling, and | ||||
| 170 | # potentially for native builds with -Ud_useshellcmds. | ||||
| 171 | 1 | 2µs | 1 | 400ns | if ($^O =~ /android/) { # spent 400ns making 1 call to CORE::match |
| 172 | # If targetsh is executable, then we're either a full | ||||
| 173 | # perl, or a miniperl for a native build. | ||||
| 174 | if ( exists($Config::Config{targetsh}) && -x $Config::Config{targetsh}) { | ||||
| 175 | $pwd_cmd = "$Config::Config{targetsh} -c pwd" | ||||
| 176 | } | ||||
| 177 | else { | ||||
| 178 | my $sh = $Config::Config{sh} || (-x '/system/bin/sh' ? '/system/bin/sh' : 'sh'); | ||||
| 179 | $pwd_cmd = "$sh -c pwd" | ||||
| 180 | } | ||||
| 181 | } | ||||
| 182 | |||||
| 183 | 1 | 300ns | my $found_pwd_cmd = defined($pwd_cmd); | ||
| 184 | |||||
| 185 | # Lazy-load Carp | ||||
| 186 | sub _carp { require Carp; Carp::carp(@_) } | ||||
| 187 | sub _croak { require Carp; Carp::croak(@_) } | ||||
| 188 | |||||
| 189 | # The 'natural and safe form' for UNIX (pwd may be setuid root) | ||||
| 190 | sub _backtick_pwd { | ||||
| 191 | |||||
| 192 | # Localize %ENV entries in a way that won't create new hash keys. | ||||
| 193 | # Under AmigaOS we don't want to localize as it stops perl from | ||||
| 194 | # finding 'sh' in the PATH. | ||||
| 195 | my @localize = grep exists $ENV{$_}, qw(IFS CDPATH ENV BASH_ENV) if $^O ne "amigaos"; | ||||
| 196 | local @ENV{@localize} if @localize; | ||||
| 197 | # empty PATH is the same as "." on *nix, so localize it to /something/ | ||||
| 198 | # we won't *use* the path as code above turns $pwd_cmd into a specific | ||||
| 199 | # executable, but it will blow up anyway under taint. We could set it to | ||||
| 200 | # anything absolute. Perhaps "/" would be better. | ||||
| 201 | local $ENV{PATH}= "/usr/bin" | ||||
| 202 | if $^O ne "amigaos"; | ||||
| 203 | |||||
| 204 | my $cwd = `$pwd_cmd`; | ||||
| 205 | # Belt-and-suspenders in case someone said "undef $/". | ||||
| 206 | local $/ = "\n"; | ||||
| 207 | # `pwd` may fail e.g. if the disk is full | ||||
| 208 | chomp($cwd) if defined $cwd; | ||||
| 209 | $cwd; | ||||
| 210 | } | ||||
| 211 | |||||
| 212 | # Since some ports may predefine cwd internally (e.g., NT) | ||||
| 213 | # we take care not to override an existing definition for cwd(). | ||||
| 214 | |||||
| 215 | 1 | 2µs | unless ($METHOD_MAP{$^O}{cwd} or defined &cwd) { | ||
| 216 | if( $found_pwd_cmd ) | ||||
| 217 | { | ||||
| 218 | *cwd = \&_backtick_pwd; | ||||
| 219 | } | ||||
| 220 | else { | ||||
| 221 | # getcwd() might have an empty prototype | ||||
| 222 | *cwd = sub { getcwd(); }; | ||||
| 223 | } | ||||
| 224 | } | ||||
| 225 | |||||
| 226 | 1 | 300ns | if ($^O eq 'cygwin') { | ||
| 227 | # We need to make sure cwd() is called with no args, because it's | ||||
| 228 | # got an arg-less prototype and will die if args are present. | ||||
| 229 | local $^W = 0; | ||||
| 230 | my $orig_cwd = \&cwd; | ||||
| 231 | *cwd = sub { &$orig_cwd() } | ||||
| 232 | } | ||||
| 233 | |||||
| 234 | |||||
| 235 | # set a reasonable (and very safe) default for fastgetcwd, in case it | ||||
| 236 | # isn't redefined later (20001212 rspier) | ||||
| 237 | 1 | 200ns | *fastgetcwd = \&cwd; | ||
| 238 | |||||
| 239 | # A non-XS version of getcwd() - also used to bootstrap the perl build | ||||
| 240 | # process, when miniperl is running and no XS loading happens. | ||||
| 241 | sub _perl_getcwd | ||||
| 242 | { | ||||
| 243 | abs_path('.'); | ||||
| 244 | } | ||||
| 245 | |||||
| 246 | # By John Bazik | ||||
| 247 | # | ||||
| 248 | # Usage: $cwd = &fastcwd; | ||||
| 249 | # | ||||
| 250 | # This is a faster version of getcwd. It's also more dangerous because | ||||
| 251 | # you might chdir out of a directory that you can't chdir back into. | ||||
| 252 | |||||
| 253 | sub fastcwd_ { | ||||
| 254 | my($odev, $oino, $cdev, $cino, $tdev, $tino); | ||||
| 255 | my(@path, $path); | ||||
| 256 | local(*DIR); | ||||
| 257 | |||||
| 258 | my($orig_cdev, $orig_cino) = stat('.'); | ||||
| 259 | ($cdev, $cino) = ($orig_cdev, $orig_cino); | ||||
| 260 | for (;;) { | ||||
| 261 | my $direntry; | ||||
| 262 | ($odev, $oino) = ($cdev, $cino); | ||||
| 263 | CORE::chdir('..') || return undef; | ||||
| 264 | ($cdev, $cino) = stat('.'); | ||||
| 265 | last if $odev == $cdev && $oino eq $cino; | ||||
| 266 | opendir(DIR, '.') || return undef; | ||||
| 267 | for (;;) { | ||||
| 268 | $direntry = readdir(DIR); | ||||
| 269 | last unless defined $direntry; | ||||
| 270 | next if $direntry eq '.'; | ||||
| 271 | next if $direntry eq '..'; | ||||
| 272 | |||||
| 273 | ($tdev, $tino) = lstat($direntry); | ||||
| 274 | last unless $tdev != $odev || $tino ne $oino; | ||||
| 275 | } | ||||
| 276 | closedir(DIR); | ||||
| 277 | return undef unless defined $direntry; # should never happen | ||||
| 278 | unshift(@path, $direntry); | ||||
| 279 | } | ||||
| 280 | $path = '/' . join('/', @path); | ||||
| 281 | if ($^O eq 'apollo') { $path = "/".$path; } | ||||
| 282 | # At this point $path may be tainted (if tainting) and chdir would fail. | ||||
| 283 | # Untaint it then check that we landed where we started. | ||||
| 284 | $path =~ /^(.*)\z/s # untaint | ||||
| 285 | && CORE::chdir($1) or return undef; | ||||
| 286 | ($cdev, $cino) = stat('.'); | ||||
| 287 | die "Unstable directory path, current directory changed unexpectedly" | ||||
| 288 | if $cdev != $orig_cdev || $cino ne $orig_cino; | ||||
| 289 | $path; | ||||
| 290 | } | ||||
| 291 | 1 | 200ns | if (not defined &fastcwd) { *fastcwd = \&fastcwd_ } | ||
| 292 | |||||
| 293 | |||||
| 294 | # Keeps track of current working directory in PWD environment var | ||||
| 295 | # Usage: | ||||
| 296 | # use Cwd 'chdir'; | ||||
| 297 | # chdir $newdir; | ||||
| 298 | |||||
| 299 | 1 | 200ns | my $chdir_init = 0; | ||
| 300 | |||||
| 301 | sub chdir_init { | ||||
| 302 | if ($ENV{'PWD'} and $^O ne 'os2' and $^O ne 'dos' and $^O ne 'MSWin32') { | ||||
| 303 | my($dd,$di) = stat('.'); | ||||
| 304 | my($pd,$pi) = stat($ENV{'PWD'}); | ||||
| 305 | if (!defined $dd or !defined $pd or $di ne $pi or $dd != $pd) { | ||||
| 306 | $ENV{'PWD'} = cwd(); | ||||
| 307 | } | ||||
| 308 | } | ||||
| 309 | else { | ||||
| 310 | my $wd = cwd(); | ||||
| 311 | $wd = Win32::GetFullPathName($wd) if $^O eq 'MSWin32'; | ||||
| 312 | $ENV{'PWD'} = $wd; | ||||
| 313 | } | ||||
| 314 | # Strip an automounter prefix (where /tmp_mnt/foo/bar == /foo/bar) | ||||
| 315 | if ($^O ne 'MSWin32' and $ENV{'PWD'} =~ m|(/[^/]+(/[^/]+/[^/]+))(.*)|s) { | ||||
| 316 | my($pd,$pi) = stat($2); | ||||
| 317 | my($dd,$di) = stat($1); | ||||
| 318 | if (defined $pd and defined $dd and $di ne $pi and $dd == $pd) { | ||||
| 319 | $ENV{'PWD'}="$2$3"; | ||||
| 320 | } | ||||
| 321 | } | ||||
| 322 | $chdir_init = 1; | ||||
| 323 | } | ||||
| 324 | |||||
| 325 | sub chdir { | ||||
| 326 | my $newdir = @_ ? shift : ''; # allow for no arg (chdir to HOME dir) | ||||
| 327 | if ($^O eq "cygwin") { | ||||
| 328 | $newdir =~ s|\A///+|//|; | ||||
| 329 | $newdir =~ s|(?<=[^/])//+|/|g; | ||||
| 330 | } | ||||
| 331 | elsif ($^O ne 'MSWin32') { | ||||
| 332 | $newdir =~ s|///*|/|g; | ||||
| 333 | } | ||||
| 334 | chdir_init() unless $chdir_init; | ||||
| 335 | my $newpwd; | ||||
| 336 | if ($^O eq 'MSWin32') { | ||||
| 337 | # get the full path name *before* the chdir() | ||||
| 338 | $newpwd = Win32::GetFullPathName($newdir); | ||||
| 339 | } | ||||
| 340 | |||||
| 341 | return 0 unless CORE::chdir $newdir; | ||||
| 342 | |||||
| 343 | if ($^O eq 'VMS') { | ||||
| 344 | return $ENV{'PWD'} = $ENV{'DEFAULT'} | ||||
| 345 | } | ||||
| 346 | elsif ($^O eq 'MSWin32') { | ||||
| 347 | $ENV{'PWD'} = $newpwd; | ||||
| 348 | return 1; | ||||
| 349 | } | ||||
| 350 | |||||
| 351 | if (ref $newdir eq 'GLOB') { # in case a file/dir handle is passed in | ||||
| 352 | $ENV{'PWD'} = cwd(); | ||||
| 353 | } elsif ($newdir =~ m#^/#s) { | ||||
| 354 | $ENV{'PWD'} = $newdir; | ||||
| 355 | } else { | ||||
| 356 | my @curdir = split(m#/#,$ENV{'PWD'}); | ||||
| 357 | @curdir = ('') unless @curdir; | ||||
| 358 | my $component; | ||||
| 359 | foreach $component (split(m#/#, $newdir)) { | ||||
| 360 | next if $component eq '.'; | ||||
| 361 | pop(@curdir),next if $component eq '..'; | ||||
| 362 | push(@curdir,$component); | ||||
| 363 | } | ||||
| 364 | $ENV{'PWD'} = join('/',@curdir) || '/'; | ||||
| 365 | } | ||||
| 366 | 1; | ||||
| 367 | } | ||||
| 368 | |||||
| 369 | |||||
| 370 | sub _perl_abs_path | ||||
| 371 | { | ||||
| 372 | my $start = @_ ? shift : '.'; | ||||
| 373 | my($dotdots, $cwd, @pst, @cst, $dir, @tst); | ||||
| 374 | |||||
| 375 | unless (@cst = stat( $start )) | ||||
| 376 | { | ||||
| 377 | return undef; | ||||
| 378 | } | ||||
| 379 | |||||
| 380 | unless (-d _) { | ||||
| 381 | # Make sure we can be invoked on plain files, not just directories. | ||||
| 382 | # NOTE that this routine assumes that '/' is the only directory separator. | ||||
| 383 | |||||
| 384 | my ($dir, $file) = $start =~ m{^(.*)/(.+)$} | ||||
| 385 | or return cwd() . '/' . $start; | ||||
| 386 | |||||
| 387 | # Can't use "-l _" here, because the previous stat was a stat(), not an lstat(). | ||||
| 388 | if (-l $start) { | ||||
| 389 | my $link_target = readlink($start); | ||||
| 390 | die "Can't resolve link $start: $!" unless defined $link_target; | ||||
| 391 | |||||
| 392 | require File::Spec; | ||||
| 393 | $link_target = $dir . '/' . $link_target | ||||
| 394 | unless File::Spec->file_name_is_absolute($link_target); | ||||
| 395 | |||||
| 396 | return abs_path($link_target); | ||||
| 397 | } | ||||
| 398 | |||||
| 399 | return $dir ? abs_path($dir) . "/$file" : "/$file"; | ||||
| 400 | } | ||||
| 401 | |||||
| 402 | $cwd = ''; | ||||
| 403 | $dotdots = $start; | ||||
| 404 | do | ||||
| 405 | { | ||||
| 406 | $dotdots .= '/..'; | ||||
| 407 | @pst = @cst; | ||||
| 408 | local *PARENT; | ||||
| 409 | unless (opendir(PARENT, $dotdots)) | ||||
| 410 | { | ||||
| 411 | return undef; | ||||
| 412 | } | ||||
| 413 | unless (@cst = stat($dotdots)) | ||||
| 414 | { | ||||
| 415 | my $e = $!; | ||||
| 416 | closedir(PARENT); | ||||
| 417 | $! = $e; | ||||
| 418 | return undef; | ||||
| 419 | } | ||||
| 420 | if ($pst[0] == $cst[0] && $pst[1] eq $cst[1]) | ||||
| 421 | { | ||||
| 422 | $dir = undef; | ||||
| 423 | } | ||||
| 424 | else | ||||
| 425 | { | ||||
| 426 | do | ||||
| 427 | { | ||||
| 428 | unless (defined ($dir = readdir(PARENT))) | ||||
| 429 | { | ||||
| 430 | closedir(PARENT); | ||||
| 431 | require Errno; | ||||
| 432 | $! = Errno::ENOENT(); | ||||
| 433 | return undef; | ||||
| 434 | } | ||||
| 435 | $tst[0] = $pst[0]+1 unless (@tst = lstat("$dotdots/$dir")) | ||||
| 436 | } | ||||
| 437 | while ($dir eq '.' || $dir eq '..' || $tst[0] != $pst[0] || | ||||
| 438 | $tst[1] ne $pst[1]); | ||||
| 439 | } | ||||
| 440 | $cwd = (defined $dir ? "$dir" : "" ) . "/$cwd" ; | ||||
| 441 | closedir(PARENT); | ||||
| 442 | } while (defined $dir); | ||||
| 443 | chop($cwd) unless $cwd eq '/'; # drop the trailing / | ||||
| 444 | $cwd; | ||||
| 445 | } | ||||
| 446 | |||||
| 447 | |||||
| 448 | 1 | 100ns | my $Curdir; | ||
| 449 | sub fast_abs_path { | ||||
| 450 | local $ENV{PWD} = $ENV{PWD} || ''; # Guard against clobberage | ||||
| 451 | my $cwd = getcwd(); | ||||
| 452 | defined $cwd or return undef; | ||||
| 453 | require File::Spec; | ||||
| 454 | my $path = @_ ? shift : ($Curdir ||= File::Spec->curdir); | ||||
| 455 | |||||
| 456 | # Detaint else we'll explode in taint mode. This is safe because | ||||
| 457 | # we're not doing anything dangerous with it. | ||||
| 458 | ($path) = $path =~ /(.*)/s; | ||||
| 459 | ($cwd) = $cwd =~ /(.*)/s; | ||||
| 460 | |||||
| 461 | unless (-e $path) { | ||||
| 462 | require Errno; | ||||
| 463 | $! = Errno::ENOENT(); | ||||
| 464 | return undef; | ||||
| 465 | } | ||||
| 466 | |||||
| 467 | unless (-d _) { | ||||
| 468 | # Make sure we can be invoked on plain files, not just directories. | ||||
| 469 | |||||
| 470 | my ($vol, $dir, $file) = File::Spec->splitpath($path); | ||||
| 471 | return File::Spec->catfile($cwd, $path) unless length $dir; | ||||
| 472 | |||||
| 473 | if (-l $path) { | ||||
| 474 | my $link_target = readlink($path); | ||||
| 475 | defined $link_target or return undef; | ||||
| 476 | |||||
| 477 | $link_target = File::Spec->catpath($vol, $dir, $link_target) | ||||
| 478 | unless File::Spec->file_name_is_absolute($link_target); | ||||
| 479 | |||||
| 480 | return fast_abs_path($link_target); | ||||
| 481 | } | ||||
| 482 | |||||
| 483 | return $dir eq File::Spec->rootdir | ||||
| 484 | ? File::Spec->catpath($vol, $dir, $file) | ||||
| 485 | : fast_abs_path(File::Spec->catpath($vol, $dir, '')) . '/' . $file; | ||||
| 486 | } | ||||
| 487 | |||||
| 488 | if (!CORE::chdir($path)) { | ||||
| 489 | return undef; | ||||
| 490 | } | ||||
| 491 | my $realpath = getcwd(); | ||||
| 492 | if (! ((-d $cwd) && (CORE::chdir($cwd)))) { | ||||
| 493 | _croak("Cannot chdir back to $cwd: $!"); | ||||
| 494 | } | ||||
| 495 | $realpath; | ||||
| 496 | } | ||||
| 497 | |||||
| 498 | # added function alias to follow principle of least surprise | ||||
| 499 | # based on previous aliasing. --tchrist 27-Jan-00 | ||||
| 500 | 1 | 200ns | *fast_realpath = \&fast_abs_path; | ||
| 501 | |||||
| 502 | |||||
| 503 | # --- PORTING SECTION --- | ||||
| 504 | |||||
| 505 | # VMS: $ENV{'DEFAULT'} points to default directory at all times | ||||
| 506 | # 06-Mar-1996 Charles Bailey bailey@newman.upenn.edu | ||||
| 507 | # Note: Use of Cwd::chdir() causes the logical name PWD to be defined | ||||
| 508 | # in the process logical name table as the default device and directory | ||||
| 509 | # seen by Perl. This may not be the same as the default device | ||||
| 510 | # and directory seen by DCL after Perl exits, since the effects | ||||
| 511 | # the CRTL chdir() function persist only until Perl exits. | ||||
| 512 | |||||
| 513 | sub _vms_cwd { | ||||
| 514 | return $ENV{'DEFAULT'}; | ||||
| 515 | } | ||||
| 516 | |||||
| 517 | sub _vms_abs_path { | ||||
| 518 | return $ENV{'DEFAULT'} unless @_; | ||||
| 519 | my $path = shift; | ||||
| 520 | |||||
| 521 | my $efs = _vms_efs; | ||||
| 522 | my $unix_rpt = _vms_unix_rpt; | ||||
| 523 | |||||
| 524 | if (defined &VMS::Filespec::vmsrealpath) { | ||||
| 525 | my $path_unix = 0; | ||||
| 526 | my $path_vms = 0; | ||||
| 527 | |||||
| 528 | $path_unix = 1 if ($path =~ m#(?<=\^)/#); | ||||
| 529 | $path_unix = 1 if ($path =~ /^\.\.?$/); | ||||
| 530 | $path_vms = 1 if ($path =~ m#[\[<\]]#); | ||||
| 531 | $path_vms = 1 if ($path =~ /^--?$/); | ||||
| 532 | |||||
| 533 | my $unix_mode = $path_unix; | ||||
| 534 | if ($efs) { | ||||
| 535 | # In case of a tie, the Unix report mode decides. | ||||
| 536 | if ($path_vms == $path_unix) { | ||||
| 537 | $unix_mode = $unix_rpt; | ||||
| 538 | } else { | ||||
| 539 | $unix_mode = 0 if $path_vms; | ||||
| 540 | } | ||||
| 541 | } | ||||
| 542 | |||||
| 543 | if ($unix_mode) { | ||||
| 544 | # Unix format | ||||
| 545 | return VMS::Filespec::unixrealpath($path); | ||||
| 546 | } | ||||
| 547 | |||||
| 548 | # VMS format | ||||
| 549 | |||||
| 550 | my $new_path = VMS::Filespec::vmsrealpath($path); | ||||
| 551 | |||||
| 552 | # Perl expects directories to be in directory format | ||||
| 553 | $new_path = VMS::Filespec::pathify($new_path) if -d $path; | ||||
| 554 | return $new_path; | ||||
| 555 | } | ||||
| 556 | |||||
| 557 | # Fallback to older algorithm if correct ones are not | ||||
| 558 | # available. | ||||
| 559 | |||||
| 560 | if (-l $path) { | ||||
| 561 | my $link_target = readlink($path); | ||||
| 562 | die "Can't resolve link $path: $!" unless defined $link_target; | ||||
| 563 | |||||
| 564 | return _vms_abs_path($link_target); | ||||
| 565 | } | ||||
| 566 | |||||
| 567 | # may need to turn foo.dir into [.foo] | ||||
| 568 | my $pathified = VMS::Filespec::pathify($path); | ||||
| 569 | $path = $pathified if defined $pathified; | ||||
| 570 | |||||
| 571 | return VMS::Filespec::rmsexpand($path); | ||||
| 572 | } | ||||
| 573 | |||||
| 574 | sub _os2_cwd { | ||||
| 575 | my $pwd = `cmd /c cd`; | ||||
| 576 | chomp $pwd; | ||||
| 577 | $pwd =~ s:\\:/:g ; | ||||
| 578 | $ENV{'PWD'} = $pwd; | ||||
| 579 | return $pwd; | ||||
| 580 | } | ||||
| 581 | |||||
| 582 | sub _win32_cwd_simple { | ||||
| 583 | my $pwd = `cd`; | ||||
| 584 | chomp $pwd; | ||||
| 585 | $pwd =~ s:\\:/:g ; | ||||
| 586 | $ENV{'PWD'} = $pwd; | ||||
| 587 | return $pwd; | ||||
| 588 | } | ||||
| 589 | |||||
| 590 | sub _win32_cwd { | ||||
| 591 | my $pwd; | ||||
| 592 | $pwd = Win32::GetCwd(); | ||||
| 593 | $pwd =~ s:\\:/:g ; | ||||
| 594 | $ENV{'PWD'} = $pwd; | ||||
| 595 | return $pwd; | ||||
| 596 | } | ||||
| 597 | |||||
| 598 | 1 | 400ns | *_NT_cwd = defined &Win32::GetCwd ? \&_win32_cwd : \&_win32_cwd_simple; | ||
| 599 | |||||
| 600 | sub _dos_cwd { | ||||
| 601 | my $pwd; | ||||
| 602 | if (!defined &Dos::GetCwd) { | ||||
| 603 | chomp($pwd = `command /c cd`); | ||||
| 604 | $pwd =~ s:\\:/:g ; | ||||
| 605 | } else { | ||||
| 606 | $pwd = Dos::GetCwd(); | ||||
| 607 | } | ||||
| 608 | $ENV{'PWD'} = $pwd; | ||||
| 609 | return $pwd; | ||||
| 610 | } | ||||
| 611 | |||||
| 612 | sub _qnx_cwd { | ||||
| 613 | local $ENV{PATH} = ''; | ||||
| 614 | local $ENV{CDPATH} = ''; | ||||
| 615 | local $ENV{ENV} = ''; | ||||
| 616 | my $pwd = `/usr/bin/fullpath -t`; | ||||
| 617 | chomp $pwd; | ||||
| 618 | $ENV{'PWD'} = $pwd; | ||||
| 619 | return $pwd; | ||||
| 620 | } | ||||
| 621 | |||||
| 622 | sub _qnx_abs_path { | ||||
| 623 | local $ENV{PATH} = ''; | ||||
| 624 | local $ENV{CDPATH} = ''; | ||||
| 625 | local $ENV{ENV} = ''; | ||||
| 626 | my $path = @_ ? shift : '.'; | ||||
| 627 | local *REALPATH; | ||||
| 628 | |||||
| 629 | defined( open(REALPATH, '-|') || exec '/usr/bin/fullpath', '-t', $path ) or | ||||
| 630 | die "Can't open /usr/bin/fullpath: $!"; | ||||
| 631 | my $realpath = <REALPATH>; | ||||
| 632 | close REALPATH; | ||||
| 633 | chomp $realpath; | ||||
| 634 | return $realpath; | ||||
| 635 | } | ||||
| 636 | |||||
| 637 | # Now that all the base-level functions are set up, alias the | ||||
| 638 | # user-level functions to the right places | ||||
| 639 | |||||
| 640 | 1 | 300ns | if (exists $METHOD_MAP{$^O}) { | ||
| 641 | 1 | 300ns | my $map = $METHOD_MAP{$^O}; | ||
| 642 | 1 | 900ns | foreach my $name (keys %$map) { | ||
| 643 | local $^W = 0; # assignments trigger 'subroutine redefined' warning | ||||
| 644 | 2 | 96µs | 2 | 16µs | # spent 12µs (7+4) within Cwd::BEGIN@644 which was called:
# once (7µs+4µs) by Archive::Zip::BEGIN@6 at line 644 # spent 12µs making 1 call to Cwd::BEGIN@644
# spent 4µs making 1 call to strict::unimport |
| 645 | *{$name} = \&{$map->{$name}}; | ||||
| 646 | } | ||||
| 647 | } | ||||
| 648 | |||||
| 649 | # built-in from 5.30 | ||||
| 650 | 1 | 200ns | *getcwd = \&Internals::getcwd | ||
| 651 | if !defined &getcwd && defined &Internals::getcwd; | ||||
| 652 | |||||
| 653 | # In case the XS version doesn't load. | ||||
| 654 | 1 | 100ns | *abs_path = \&_perl_abs_path unless defined &abs_path; | ||
| 655 | 1 | 100ns | *getcwd = \&_perl_getcwd unless defined &getcwd; | ||
| 656 | |||||
| 657 | # added function alias for those of us more | ||||
| 658 | # used to the libc function. --tchrist 27-Jan-00 | ||||
| 659 | 1 | 200ns | *realpath = \&abs_path; | ||
| 660 | |||||
| 661 | 1 | 27µs | 1; | ||
| 662 | __END__ |