Profile of File/Spec/Unix.pm

← Index
NYTProf Performance Profile «block view•line view•sub view»
For xt/tapper-mcp-scheduler-with-db-longrun.t
Run on Tue May 22 17:18:39 2012
Reported on Tue May 22 17:22:53 2012

Filename | /2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/5.12.3/x86_64-linux/File/Spec/Unix.pm
Statements | Executed 8588 statements in 11.4ms

Subroutines
Calls | P | F | Exclusive Time | Inclusive Time | Subroutine
--- | --- | --- | --- | --- | ---
45 | 1 | 1 | 3.50ms | 8.82ms | File::Spec::Unix::::abs2relFile::Spec::Unix::abs2rel
322 | 5 | 1 | 3.16ms | 3.72ms | File::Spec::Unix::::canonpathFile::Spec::Unix::canonpath
1928 | 6 | 1 | 562µs | 562µs | File::Spec::Unix::::CORE:substFile::Spec::Unix::CORE:subst (opcode)
630 | 2 | 1 | 543µs | 543µs | File::Spec::Unix::::_sameFile::Spec::Unix::_same
182 | 3 | 2 | 468µs | 575µs | File::Spec::Unix::::file_name_is_absoluteFile::Spec::Unix::file_name_is_absolute
90 | 1 | 1 | 405µs | 1.64ms | File::Spec::Unix::::rel2absFile::Spec::Unix::rel2abs
180 | 4 | 1 | 358µs | 358µs | File::Spec::Unix::::splitpathFile::Spec::Unix::splitpath
93 | 7 | 3 | 297µs | 1.46ms | File::Spec::Unix::::catdirFile::Spec::Unix::catdir
131 | 3 | 2 | 273µs | 273µs | File::Spec::Unix::::splitdirFile::Spec::Unix::splitdir
41 | 1 | 1 | 108µs | 108µs | File::Spec::Unix::::catpathFile::Spec::Unix::catpath
182 | 1 | 1 | 107µs | 107µs | File::Spec::Unix::::CORE:matchFile::Spec::Unix::CORE:match (opcode)
8 | 3 | 3 | 80µs | 329µs | File::Spec::Unix::::catfileFile::Spec::Unix::catfile
50 | 3 | 3 | 47µs | 47µs | File::Spec::Unix::::curdirFile::Spec::Unix::curdir
45 | 1 | 1 | 40µs | 40µs | File::Spec::Unix::::rootdirFile::Spec::Unix::rootdir
41 | 1 | 1 | 37µs | 37µs | File::Spec::Unix::::updirFile::Spec::Unix::updir
1 | 1 | 1 | 11µs | 13µs | File::Spec::Unix::::BEGIN@3File::Spec::Unix::BEGIN@3
1 | 1 | 1 | 7µs | 21µs | File::Spec::Unix::::BEGIN@149File::Spec::Unix::BEGIN@149
1 | 1 | 1 | 5µs | 20µs | File::Spec::Unix::::BEGIN@4File::Spec::Unix::BEGIN@4
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::_collapseFile::Spec::Unix::_collapse
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::_cwdFile::Spec::Unix::_cwd
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::_tmpdirFile::Spec::Unix::_tmpdir
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::case_tolerantFile::Spec::Unix::case_tolerant
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::devnullFile::Spec::Unix::devnull
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::joinFile::Spec::Unix::join
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::no_upwardsFile::Spec::Unix::no_upwards
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::pathFile::Spec::Unix::path
0 | 0 | 0 | 0s | 0s | File::Spec::Unix::::tmpdirFile::Spec::Unix::tmpdir

Call graph for these subroutines as a Graphviz dot language file.

Line | State ments | Time on line | Calls | Time in subs | Code
--- | --- | --- | --- | --- | ---
1 |  |  |  |  | package File::Spec::Unix;
2 |  |  |  |  |
3 | 3 | 18µs | 2 | 15µs | # spent 13µs (11+2) within File::Spec::Unix::BEGIN@3 which was called: # once (11µs+2µs) by Log::Log4perl::Util::BEGIN@3 at line 3 use strict; # spent 13µs making 1 call to File::Spec::Unix::BEGIN@3 # spent 2µs making 1 call to strict::import
4 | 3 | 364µs | 2 | 35µs | # spent 20µs (5+15) within File::Spec::Unix::BEGIN@4 which was called: # once (5µs+15µs) by Log::Log4perl::Util::BEGIN@3 at line 4 use vars qw($VERSION); # spent 20µs making 1 call to File::Spec::Unix::BEGIN@4 # spent 15µs making 1 call to vars::import
5 |  |  |  |  |
6 | 1 | 500ns |  |  | $VERSION = '3.33';
7 | 1 | 14µs |  |  | $VERSION = eval $VERSION; # spent 2µs executing statements in string eval
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( $path ) ;
33 |  |  |  |  |
34 |  |  |  |  | Note that this does *not* collapse F<x/../y> sections into F<y>. This
35 |  |  |  |  | is by design. If F</foo> on your system is a symlink to F</bar/baz>,
36 |  |  |  |  | then F</foo/../quux> is actually F</bar/quux>, not F</quux> as a naive
37 |  |  |  |  | F<../>-removal would give you. If you want to do this kind of
38 |  |  |  |  | processing, you probably want C<Cwd>'s C<realpath()> function to
39 |  |  |  |  | actually traverse the filesystem cleaning up paths like this.
40 |  |  |  |  |
41 |  |  |  |  | =cut
42 |  |  |  |  |
43 |  |  |  |  | # spent 3.72ms (3.16+562µs) within File::Spec::Unix::canonpath which was called 322 times, avg 12µs/call: # 93 times (955µs+207µs) by File::Spec::Unix::catdir at line 86, avg 12µs/call # 90 times (867µs+140µs) by File::Spec::Unix::abs2rel at line 363, avg 11µs/call # 90 times (843µs+132µs) by File::Spec::Unix::rel2abs at line 460, avg 11µs/call # 41 times (382µs+66µs) by File::Spec::Unix::abs2rel at line 407, avg 11µs/call # 8 times (111µs+17µs) by File::Spec::Unix::catfile at line 98, avg 16µs/call sub canonpath {
44 | 3864 | 3.92ms |  |  | my ($self,$path) = @_;
45 |  |  |  |  | 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 |  |  |  |  | my $node = '';
52 |  |  |  |  | my $double_slashes_special = $^O eq 'qnx' || $^O eq 'nto';
53 |  |  |  |  |
54 |  |  |  |  |
55 |  |  |  |  | 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 |  |  | 322 | 127µs | $path =~ s|/{2,}|/|g; # xx////xx -> xx/xx # spent 127µs making 322 calls to File::Spec::Unix::CORE:subst, avg 395ns/call
65 |  |  | 322 | 104µs | $path =~ s{(?:/\.)+(?:/|\z)}{/}g; # xx/././xx -> xx/xx # spent 104µs making 322 calls to File::Spec::Unix::CORE:subst, avg 324ns/call
66 |  |  | 318 | 75µs | $path =~ s|^(?:\./)+||s unless $path eq "./"; # ./xx -> xx # spent 75µs making 318 calls to File::Spec::Unix::CORE:subst, avg 237ns/call
67 |  |  | 322 | 83µs | $path =~ s|^/(?:\.\./)+|/|; # /../../xx -> xx # spent 83µs making 322 calls to File::Spec::Unix::CORE:subst, avg 257ns/call
68 |  |  | 322 | 62µs | $path =~ s|^/\.\.$|/|; # /.. -> / # spent 62µs making 322 calls to File::Spec::Unix::CORE:subst, avg 193ns/call
69 |  |  | 322 | 110µs | $path =~ s|/\z|| unless $path eq "/"; # xx/ -> xx # spent 110µs making 322 calls to File::Spec::Unix::CORE:subst, avg 342ns/call
70 |  |  |  |  | return "$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 1.46ms (297µs+1.16) within File::Spec::Unix::catdir which was called 93 times, avg 16µs/call: # 41 times (121µs+489µs) by File::Spec::Unix::abs2rel at line 406, avg 15µs/call # 24 times (70µs+284µs) by Module::Find::_find at line 186 of Module/Find.pm, avg 15µs/call # 12 times (37µs+142µs) by File::ShareDir::_module_dir_new at line 261 of File/ShareDir.pm, avg 15µs/call # 8 times (28µs+94µs) by File::Spec::Unix::catfile at line 100, avg 15µs/call # 4 times (20µs+77µs) by Module::Find::_find at line 179 of Module/Find.pm, avg 24µs/call # 2 times (14µs+48µs) by File::ShareDir::_module_dir_new at line 253 of File/ShareDir.pm, avg 31µs/call # 2 times (7µs+28µs) by File::ShareDir::_module_dir_old at line 279 of File/ShareDir.pm, avg 17µs/call sub catdir {
84 | 186 | 295µs |  |  | my $self = shift;
85 |  |  |  |  |
86 |  |  | 93 | 1.16ms | $self->canonpath(join('/', @_, '')); # '' because need a trailing '/' # spent 1.16ms making 93 calls to File::Spec::Unix::canonpath, avg 12µs/call
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 329µs (80+250) within File::Spec::Unix::catfile which was called 8 times, avg 41µs/call: # 4 times (51µs+146µs) by DBIx::Class::Schema::ddl_filename at line 1211 of DBIx/Class/Schema.pm, avg 49µs/call # 2 times (12µs+54µs) by File::ShareDir::module_file at line 392 of File/ShareDir.pm, avg 33µs/call # 2 times (16µs+49µs) by Class::Inspector::filename at line 164 of Class/Inspector.pm, avg 33µs/call sub catfile {
97 | 48 | 72µs |  |  | my $self = shift;
98 |  |  | 8 | 127µs | my $file = $self->canonpath(pop @_); # spent 127µs making 8 calls to File::Spec::Unix::canonpath, avg 16µs/call
99 |  |  |  |  | return $file unless @_;
100 |  |  | 8 | 122µs | my $dir = $self->catdir(@_); # spent 122µs making 8 calls to File::Spec::Unix::catdir, avg 15µs/call
101 |  |  |  |  | $dir .= "/" unless substr($dir,-1) eq "/";
102 |  |  |  |  | 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 | 50 | 79µs |  |  | # spent 47µs within File::Spec::Unix::curdir which was called 50 times, avg 946ns/call: # 45 times (40µs+0s) by Module::Find::_wanted at line 157 of Module/Find.pm, avg 884ns/call # 4 times (4µs+0s) by File::Spec::Unix::abs2rel at line 402, avg 1µs/call # once (3µs+0s) by Module::Find::BEGIN@8 at line 1324 of File/Find.pm sub curdir { '.' }
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 | 45 | 71µs |  |  | # spent 40µs within File::Spec::Unix::rootdir which was called 45 times, avg 878ns/call: # 45 times (40µs+0s) by File::Spec::Unix::abs2rel at line 393, avg 878ns/call 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 |  |  |  |  | Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR}
139 |  |  |  |  | is tainted, it is not used.
140 |  |  |  |  |
141 |  |  |  |  | =cut
142 |  |  |  |  |
143 | 1 | 200ns |  |  | my $tmpdir;
144 |  |  |  |  | sub _tmpdir {
145 |  |  |  |  | return $tmpdir if defined $tmpdir;
146 |  |  |  |  | my $self = shift;
147 |  |  |  |  | my @dirlist = @_;
148 |  |  |  |  | {
149 | 3 | 861µs | 2 | 36µs | # spent 21µs (7+14) within File::Spec::Unix::BEGIN@149 which was called: # once (7µs+14µs) by Log::Log4perl::Util::BEGIN@3 at line 149 no strict 'refs'; # spent 21µs making 1 call to File::Spec::Unix::BEGIN@149 # spent 14µs making 1 call to strict::unimport
150 |  |  |  |  | if (${"\cTAINT"}) { # Check for taint mode on perl >= 5.8.0
151 |  |  |  |  | require Scalar::Util;
152 |  |  |  |  | @dirlist = grep { ! Scalar::Util::tainted($_) } @dirlist;
153 |  |  |  |  | }
154 |  |  |  |  | }
155 |  |  |  |  | foreach (@dirlist) {
156 |  |  |  |  | next unless defined && -d && -w _;
157 |  |  |  |  | $tmpdir = $_;
158 |  |  |  |  | last;
159 |  |  |  |  | }
160 |  |  |  |  | $tmpdir = $self->curdir unless defined $tmpdir;
161 |  |  |  |  | $tmpdir = defined $tmpdir && $self->canonpath($tmpdir);
162 |  |  |  |  | return $tmpdir;
163 |  |  |  |  | }
164 |  |  |  |  |
165 |  |  |  |  | sub tmpdir {
166 |  |  |  |  | return $tmpdir if defined $tmpdir;
167 |  |  |  |  | $tmpdir = $_[0]->_tmpdir( $ENV{TMPDIR}, "/tmp" );
168 |  |  |  |  | }
169 |  |  |  |  |
170 |  |  |  |  | =item updir
171 |  |  |  |  |
172 |  |  |  |  | Returns a string representation of the parent directory. ".." on UNIX.
173 |  |  |  |  |
174 |  |  |  |  | =cut
175 |  |  |  |  |
176 | 41 | 64µs |  |  | # spent 37µs within File::Spec::Unix::updir which was called 41 times, avg 907ns/call: # 41 times (37µs+0s) by File::Spec::Unix::abs2rel at line 406, avg 907ns/call sub updir { '..' }
177 |  |  |  |  |
178 |  |  |  |  | =item no_upwards
179 |  |  |  |  |
180 |  |  |  |  | Given a list of file names, strip out those that refer to a parent
181 |  |  |  |  | directory. (Does not strip symlinks, only '.', '..', and equivalents.)
182 |  |  |  |  |
183 |  |  |  |  | =cut
184 |  |  |  |  |
185 |  |  |  |  | sub no_upwards {
186 |  |  |  |  | my $self = shift;
187 |  |  |  |  | return grep(!/^\.{1,2}\z/s, @_);
188 |  |  |  |  | }
189 |  |  |  |  |
190 |  |  |  |  | =item case_tolerant
191 |  |  |  |  |
192 |  |  |  |  | Returns a true or false value indicating, respectively, that alphabetic
193 |  |  |  |  | is not or is significant when comparing file specifications.
194 |  |  |  |  |
195 |  |  |  |  | =cut
196 |  |  |  |  |
197 |  |  |  |  | sub case_tolerant { 0 }
198 |  |  |  |  |
199 |  |  |  |  | =item file_name_is_absolute
200 |  |  |  |  |
201 |  |  |  |  | Takes as argument a path and returns true if it is an absolute path.
202 |  |  |  |  |
203 |  |  |  |  | This does not consult the local filesystem on Unix, Win32, OS/2 or Mac
204 |  |  |  |  | OS (Classic). It does consult the working environment for VMS (see
205 |  |  |  |  | L<File::Spec::VMS/file_name_is_absolute>).
206 |  |  |  |  |
207 |  |  |  |  | =cut
208 |  |  |  |  |
209 |  |  |  |  | # spent 575µs (468+107) within File::Spec::Unix::file_name_is_absolute which was called 182 times, avg 3µs/call: # 90 times (241µs+60µs) by File::Spec::Unix::abs2rel at line 365, avg 3µs/call # 90 times (213µs+47µs) by File::Spec::Unix::rel2abs at line 444, avg 3µs/call # 2 times (14µs+1µs) by File::ShareDir::_FILE at line 538 of File/ShareDir.pm, avg 8µs/call sub file_name_is_absolute {
210 | 364 | 698µs |  |  | my ($self,$file) = @_;
211 |  |  | 182 | 107µs | return scalar($file =~ m:^/:s); # spent 107µs making 182 calls to File::Spec::Unix::CORE:match, avg 590ns/call
212 |  |  |  |  | }
213 |  |  |  |  |
214 |  |  |  |  | =item path
215 |  |  |  |  |
216 |  |  |  |  | Takes no argument, returns the environment variable PATH as an array.
217 |  |  |  |  |
218 |  |  |  |  | =cut
219 |  |  |  |  |
220 |  |  |  |  | sub path {
221 |  |  |  |  | return () unless exists $ENV{PATH};
222 |  |  |  |  | my @path = split(':', $ENV{PATH});
223 |  |  |  |  | foreach (@path) { $_ = '.' if $_ eq '' }
224 |  |  |  |  | return @path;
225 |  |  |  |  | }
226 |  |  |  |  |
227 |  |  |  |  | =item join
228 |  |  |  |  |
229 |  |  |  |  | join is the same as catfile.
230 |  |  |  |  |
231 |  |  |  |  | =cut
232 |  |  |  |  |
233 |  |  |  |  | sub join {
234 |  |  |  |  | my $self = shift;
235 |  |  |  |  | return $self->catfile(@_);
236 |  |  |  |  | }
237 |  |  |  |  |
238 |  |  |  |  | =item splitpath
239 |  |  |  |  |
240 |  |  |  |  | ($volume,$directories,$file) = File::Spec->splitpath( $path );
241 |  |  |  |  | ($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
242 |  |  |  |  |
243 |  |  |  |  | Splits a path into volume, directory, and filename portions. On systems
244 |  |  |  |  | with no concept of volume, returns '' for volume.
245 |  |  |  |  |
246 |  |  |  |  | For systems with no syntax differentiating filenames from directories,
247 |  |  |  |  | assumes that the last file is a path unless $no_file is true or a
248 |  |  |  |  | trailing separator or /. or /.. is present. On Unix this means that $no_file
249 |  |  |  |  | true makes this return ( '', $path, '' ).
250 |  |  |  |  |
251 |  |  |  |  | The directory portion may or may not be returned with a trailing '/'.
252 |  |  |  |  |
253 |  |  |  |  | The results can be passed to L</catpath()> to get back a path equivalent to
254 |  |  |  |  | (usually identical to) the original path.
255 |  |  |  |  |
256 |  |  |  |  | =cut
257 |  |  |  |  |
258 |  |  |  |  | # spent 358µs within File::Spec::Unix::splitpath which was called 180 times, avg 2µs/call: # 45 times (103µs+0s) by File::Spec::Unix::abs2rel at line 373, avg 2µs/call # 45 times (87µs+0s) by File::Spec::Unix::abs2rel at line 374, avg 2µs/call # 45 times (84µs+0s) by File::Spec::Unix::abs2rel at line 380, avg 2µs/call # 45 times (84µs+0s) by File::Spec::Unix::abs2rel at line 379, avg 2µs/call sub splitpath {
259 | 720 | 486µs |  |  | my ($self,$path, $nofile) = @_;
260 |  |  |  |  |
261 |  |  |  |  | my ($volume,$directory,$file) = ('','','');
262 |  |  |  |  |
263 |  |  |  |  | if ( $nofile ) {
264 |  |  |  |  | $directory = $path;
265 |  |  |  |  | }
266 |  |  |  |  | else {
267 |  |  |  |  | $path =~ m|^ ( (?: .* / (?: \.\.?\z )? )? ) ([^/]*) |xs;
268 |  |  |  |  | $directory = $1;
269 |  |  |  |  | $file = $2;
270 |  |  |  |  | }
271 |  |  |  |  |
272 |  |  |  |  | return ($volume,$directory,$file);
273 |  |  |  |  | }
274 |  |  |  |  |
275 |  |  |  |  |
276 |  |  |  |  | =item splitdir
277 |  |  |  |  |
278 |  |  |  |  | The opposite of L</catdir()>.
279 |  |  |  |  |
280 |  |  |  |  | @dirs = File::Spec->splitdir( $directories );
281 |  |  |  |  |
282 |  |  |  |  | $directories must be only the directory portion of the path on systems
283 |  |  |  |  | that have the concept of a volume or that have path syntax that differentiates
284 |  |  |  |  | files from directories.
285 |  |  |  |  |
286 |  |  |  |  | Unlike just splitting the directories on the separator, empty
287 |  |  |  |  | directory names (C<''>) can be returned, because these are significant
288 |  |  |  |  | on some OSs.
289 |  |  |  |  |
290 |  |  |  |  | On Unix,
291 |  |  |  |  |
292 |  |  |  |  | File::Spec->splitdir( "/a/b//c/" );
293 |  |  |  |  |
294 |  |  |  |  | Yields:
295 |  |  |  |  |
296 |  |  |  |  | ( '', 'a', 'b', '', 'c', '' )
297 |  |  |  |  |
298 |  |  |  |  | =cut
299 |  |  |  |  |
300 |  |  |  |  | # spent 273µs within File::Spec::Unix::splitdir which was called 131 times, avg 2µs/call: # 45 times (126µs+0s) by File::Spec::Unix::abs2rel at line 390, avg 3µs/call # 45 times (97µs+0s) by File::Spec::Unix::abs2rel at line 391, avg 2µs/call # 41 times (51µs+0s) by Module::Find::_wanted at line 167 of Module/Find.pm, avg 1µs/call sub splitdir {
301 | 131 | 374µs |  |  | return split m|/|, $_[1], -1; # Preserve trailing fields
302 |  |  |  |  | }
303 |  |  |  |  |
304 |  |  |  |  |
305 |  |  |  |  | =item catpath()
306 |  |  |  |  |
307 |  |  |  |  | Takes volume, directory and file portions and returns an entire path. Under
308 |  |  |  |  | Unix, $volume is ignored, and directory and file are concatenated. A '/' is
309 |  |  |  |  | inserted if needed (though if the directory portion doesn't start with
310 |  |  |  |  | '/' it is not added). On other OSs, $volume is significant.
311 |  |  |  |  |
312 |  |  |  |  | =cut
313 |  |  |  |  |
314 |  |  |  |  | # spent 108µs within File::Spec::Unix::catpath which was called 41 times, avg 3µs/call: # 41 times (108µs+0s) by File::Spec::Unix::abs2rel at line 407, avg 3µs/call sub catpath {
315 | 123 | 121µs |  |  | my ($self,$volume,$directory,$file) = @_;
316 |  |  |  |  |
317 | 41 | 12µs |  |  | if ( $directory ne '' &&
318 |  |  |  |  | $file ne '' &&
319 |  |  |  |  | substr( $directory, -1 ) ne '/' &&
320 |  |  |  |  | substr( $file, 0, 1 ) ne '/'
321 |  |  |  |  | ) {
322 |  |  |  |  | $directory .= "/$file" ;
323 |  |  |  |  | }
324 |  |  |  |  | else {
325 |  |  |  |  | $directory .= $file ;
326 |  |  |  |  | }
327 |  |  |  |  |
328 |  |  |  |  | return $directory ;
329 |  |  |  |  | }
330 |  |  |  |  |
331 |  |  |  |  | =item abs2rel
332 |  |  |  |  |
333 |  |  |  |  | Takes a destination path and an optional base path returns a relative path
334 |  |  |  |  | from the base path to the destination path:
335 |  |  |  |  |
336 |  |  |  |  | $rel_path = File::Spec->abs2rel( $path ) ;
337 |  |  |  |  | $rel_path = File::Spec->abs2rel( $path, $base ) ;
338 |  |  |  |  |
339 |  |  |  |  | If $base is not present or '', then L<cwd()|Cwd> is used. If $base is
340 |  |  |  |  | relative, then it is converted to absolute form using
341 |  |  |  |  | L</rel2abs()>. This means that it is taken to be relative to
342 |  |  |  |  | L<cwd()|Cwd>.
343 |  |  |  |  |
344 |  |  |  |  | On systems that have a grammar that indicates filenames, this ignores the
345 |  |  |  |  | $base filename. Otherwise all path components are assumed to be
346 |  |  |  |  | directories.
347 |  |  |  |  |
348 |  |  |  |  | If $path is relative, it is converted to absolute form using L</rel2abs()>.
349 |  |  |  |  | This means that it is taken to be relative to L<cwd()|Cwd>.
350 |  |  |  |  |
351 |  |  |  |  | No checks against the filesystem are made. On VMS, there is
352 |  |  |  |  | interaction with the working environment, as logicals and
353 |  |  |  |  | macros are expanded.
354 |  |  |  |  |
355 |  |  |  |  | Based on code written by Shigio Yamaguchi.
356 |  |  |  |  |
357 |  |  |  |  | =cut
358 |  |  |  |  |
359 |  |  |  |  | # spent 8.82ms (3.50+5.32) within File::Spec::Unix::abs2rel which was called 45 times, avg 196µs/call: # 45 times (3.50ms+5.32ms) by Module::Find::_wanted at line 156 of Module/Find.pm, avg 196µs/call sub abs2rel {
360 | 757 | 1.48ms |  |  | my($self,$path,$base) = @_;
361 |  |  |  |  | $base = $self->_cwd() unless defined $base and length $base;
362 |  |  |  |  |
363 |  |  | 90 | 1.01ms | ($path, $base) = map $self->canonpath($_), $path, $base; # spent 1.01ms making 90 calls to File::Spec::Unix::canonpath, avg 11µs/call
364 |  |  |  |  |
365 | 45 | 134µs | 90 | 300µs | if (grep $self->file_name_is_absolute($_), $path, $base) { # spent 300µs making 90 calls to File::Spec::Unix::file_name_is_absolute, avg 3µs/call
366 |  |  | 90 | 1.64ms | ($path, $base) = map $self->rel2abs($_), $path, $base; # spent 1.64ms making 90 calls to File::Spec::Unix::rel2abs, avg 18µs/call
367 |  |  |  |  | }
368 |  |  |  |  | else {
369 |  |  |  |  | # save a couple of cwd()s if both paths are relative
370 |  |  |  |  | ($path, $base) = map $self->catdir('/', $_), $path, $base;
371 |  |  |  |  | }
372 |  |  |  |  |
373 |  |  | 45 | 103µs | my ($path_volume) = $self->splitpath($path, 1); # spent 103µs making 45 calls to File::Spec::Unix::splitpath, avg 2µs/call
374 |  |  | 45 | 87µs | my ($base_volume) = $self->splitpath($base, 1); # spent 87µs making 45 calls to File::Spec::Unix::splitpath, avg 2µs/call
375 |  |  |  |  |
376 |  |  |  |  | # Can't relativize across volumes
377 |  |  |  |  | return $path unless $path_volume eq $base_volume;
378 |  |  |  |  |
379 |  |  | 45 | 84µs | my $path_directories = ($self->splitpath($path, 1))[1]; # spent 84µs making 45 calls to File::Spec::Unix::splitpath, avg 2µs/call
380 |  |  | 45 | 84µs | my $base_directories = ($self->splitpath($base, 1))[1]; # spent 84µs making 45 calls to File::Spec::Unix::splitpath, avg 2µs/call
381 |  |  |  |  |
382 |  |  |  |  | # For UNC paths, the user might give a volume like //foo/bar that
383 |  |  |  |  | # strictly speaking has no directory portion. Treat it as if it
384 |  |  |  |  | # had the root directory for that volume.
385 |  |  |  |  | if (!length($base_directories) and $self->file_name_is_absolute($base)) {
386 |  |  |  |  | $base_directories = $self->rootdir;
387 |  |  |  |  | }
388 |  |  |  |  |
389 |  |  |  |  | # Now, remove all leading components that are the same
390 |  |  | 45 | 126µs | my @pathchunks = $self->splitdir( $path_directories ); # spent 126µs making 45 calls to File::Spec::Unix::splitdir, avg 3µs/call
391 |  |  | 45 | 97µs | my @basechunks = $self->splitdir( $base_directories ); # spent 97µs making 45 calls to File::Spec::Unix::splitdir, avg 2µs/call
392 |  |  |  |  |
393 |  |  | 45 | 40µs | if ($base_directories eq $self->rootdir) { # spent 40µs making 45 calls to File::Spec::Unix::rootdir, avg 878ns/call
394 |  |  |  |  | shift @pathchunks;
395 |  |  |  |  | return $self->canonpath( $self->catpath('', $self->catdir( @pathchunks ), '') );
396 |  |  |  |  | }
397 |  |  |  |  |
398 |  |  | 45 | 45µs | while (@pathchunks && @basechunks && $self->_same($pathchunks[0], $basechunks[0])) { # spent 45µs making 45 calls to File::Spec::Unix::_same, avg 1µs/call
399 | 1260 | 1.01ms |  |  | shift @pathchunks ;
400 |  |  | 585 | 497µs | shift @basechunks ; # spent 497µs making 585 calls to File::Spec::Unix::_same, avg 850ns/call
401 |  |  |  |  | }
402 |  |  | 4 | 4µs | return $self->curdir unless @pathchunks || @basechunks; # spent 4µs making 4 calls to File::Spec::Unix::curdir, avg 1µs/call
403 |  |  |  |  |
404 |  |  |  |  | # $base now contains the directories the resulting relative path
405 |  |  |  |  | # must ascend out of before it can descend to $path_directory.
406 |  |  | 82 | 647µs | my $result_dirs = $self->catdir( ($self->updir) x @basechunks, @pathchunks ); # spent 610µs making 41 calls to File::Spec::Unix::catdir, avg 15µs/call # spent 37µs making 41 calls to File::Spec::Unix::updir, avg 907ns/call
407 |  |  | 82 | 557µs | return $self->canonpath( $self->catpath('', $result_dirs, '') ); # spent 448µs making 41 calls to File::Spec::Unix::canonpath, avg 11µs/call # spent 108µs making 41 calls to File::Spec::Unix::catpath, avg 3µs/call
408 |  |  |  |  | }
409 |  |  |  |  |
410 |  |  |  |  | # spent 543µs within File::Spec::Unix::_same which was called 630 times, avg 861ns/call: # 585 times (497µs+0s) by File::Spec::Unix::abs2rel at line 400, avg 850ns/call # 45 times (45µs+0s) by File::Spec::Unix::abs2rel at line 398, avg 1µs/call sub _same {
411 | 630 | 942µs |  |  | $_[1] eq $_[2];
412 |  |  |  |  | }
413 |  |  |  |  |
414 |  |  |  |  | =item rel2abs()
415 |  |  |  |  |
416 |  |  |  |  | Converts a relative path to an absolute path.
417 |  |  |  |  |
418 |  |  |  |  | $abs_path = File::Spec->rel2abs( $path ) ;
419 |  |  |  |  | $abs_path = File::Spec->rel2abs( $path, $base ) ;
420 |  |  |  |  |
421 |  |  |  |  | If $base is not present or '', then L<cwd()|Cwd> is used. If $base is
422 |  |  |  |  | relative, then it is converted to absolute form using
423 |  |  |  |  | L</rel2abs()>. This means that it is taken to be relative to
424 |  |  |  |  | L<cwd()|Cwd>.
425 |  |  |  |  |
426 |  |  |  |  | On systems that have a grammar that indicates filenames, this ignores
427 |  |  |  |  | the $base filename. Otherwise all path components are assumed to be
428 |  |  |  |  | directories.
429 |  |  |  |  |
430 |  |  |  |  | If $path is absolute, it is cleaned up and returned using L</canonpath()>.
431 |  |  |  |  |
432 |  |  |  |  | No checks against the filesystem are made. On VMS, there is
433 |  |  |  |  | interaction with the working environment, as logicals and
434 |  |  |  |  | macros are expanded.
435 |  |  |  |  |
436 |  |  |  |  | Based on code written by Shigio Yamaguchi.
437 |  |  |  |  |
438 |  |  |  |  | =cut
439 |  |  |  |  |
440 |  |  |  |  | # spent 1.64ms (405µs+1.23) within File::Spec::Unix::rel2abs which was called 90 times, avg 18µs/call: # 90 times (405µs+1.23ms) by File::Spec::Unix::abs2rel at line 366, avg 18µs/call sub rel2abs {
441 | 270 | 341µs |  |  | my ($self,$path,$base ) = @_;
442 |  |  |  |  |
443 |  |  |  |  | # Clean up $path
444 |  |  | 90 | 260µs | if ( ! $self->file_name_is_absolute( $path ) ) { # spent 260µs making 90 calls to File::Spec::Unix::file_name_is_absolute, avg 3µs/call
445 |  |  |  |  | # Figure out the effective $base and clean it up.
446 |  |  |  |  | if ( !defined( $base ) || $base eq '' ) {
447 |  |  |  |  | $base = $self->_cwd();
448 |  |  |  |  | }
449 |  |  |  |  | elsif ( ! $self->file_name_is_absolute( $base ) ) {
450 |  |  |  |  | $base = $self->rel2abs( $base ) ;
451 |  |  |  |  | }
452 |  |  |  |  | else {
453 |  |  |  |  | $base = $self->canonpath( $base ) ;
454 |  |  |  |  | }
455 |  |  |  |  |
456 |  |  |  |  | # Glom them together
457 |  |  |  |  | $path = $self->catdir( $base, $path ) ;
458 |  |  |  |  | }
459 |  |  |  |  |
460 |  |  | 90 | 975µs | return $self->canonpath( $path ) ; # spent 975µs making 90 calls to File::Spec::Unix::canonpath, avg 11µs/call
461 |  |  |  |  | }
462 |  |  |  |  |
463 |  |  |  |  | =back
464 |  |  |  |  |
465 |  |  |  |  | =head1 COPYRIGHT
466 |  |  |  |  |
467 |  |  |  |  | Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
468 |  |  |  |  |
469 |  |  |  |  | This program is free software; you can redistribute it and/or modify
470 |  |  |  |  | it under the same terms as Perl itself.
471 |  |  |  |  |
472 |  |  |  |  | =head1 SEE ALSO
473 |  |  |  |  |
474 |  |  |  |  | L<File::Spec>
475 |  |  |  |  |
476 |  |  |  |  | =cut
477 |  |  |  |  |
478 |  |  |  |  | # Internal routine to File::Spec, no point in making this public since
479 |  |  |  |  | # it is the standard Cwd interface. Most of the platform-specific
480 |  |  |  |  | # File::Spec subclasses use this.
481 |  |  |  |  | sub _cwd {
482 |  |  |  |  | require Cwd;
483 |  |  |  |  | Cwd::getcwd();
484 |  |  |  |  | }
485 |  |  |  |  |
486 |  |  |  |  |
487 |  |  |  |  | # Internal method to reduce xx\..\yy -> yy
488 |  |  |  |  | sub _collapse {
489 |  |  |  |  | my($fs, $path) = @_;
490 |  |  |  |  |
491 |  |  |  |  | my $updir = $fs->updir;
492 |  |  |  |  | my $curdir = $fs->curdir;
493 |  |  |  |  |
494 |  |  |  |  | my($vol, $dirs, $file) = $fs->splitpath($path);
495 |  |  |  |  | my @dirs = $fs->splitdir($dirs);
496 |  |  |  |  | pop @dirs if @dirs && $dirs[-1] eq '';
497 |  |  |  |  |
498 |  |  |  |  | my @collapsed;
499 |  |  |  |  | foreach my $dir (@dirs) {
500 |  |  |  |  | if( $dir eq $updir and # if we have an updir
501 |  |  |  |  | @collapsed and # and something to collapse
502 |  |  |  |  | length $collapsed[-1] and # and its not the rootdir
503 |  |  |  |  | $collapsed[-1] ne $updir and # nor another updir
504 |  |  |  |  | $collapsed[-1] ne $curdir # nor the curdir
505 |  |  |  |  | )
506 |  |  |  |  | { # then
507 |  |  |  |  | pop @collapsed; # collapse
508 |  |  |  |  | }
509 |  |  |  |  | else { # else
510 |  |  |  |  | push @collapsed, $dir; # just hang onto it
511 |  |  |  |  | }
512 |  |  |  |  | }
513 |  |  |  |  |
514 |  |  |  |  | return $fs->catpath($vol,
515 |  |  |  |  | $fs->catdir(@collapsed),
516 |  |  |  |  | $file
517 |  |  |  |  | );
518 |  |  |  |  | }
519 |  |  |  |  |
520 |  |  |  |  |
521 | 1 | 3µs |  |  | 1;
|  |  |  |  | # spent 107µs within File::Spec::Unix::CORE:match which was called 182 times, avg 590ns/call: # 182 times (107µs+0s) by File::Spec::Unix::file_name_is_absolute at line 211, avg 590ns/call sub File::Spec::Unix::CORE:match; # opcode
|  |  |  |  | # spent 562µs within File::Spec::Unix::CORE:subst which was called 1928 times, avg 291ns/call: # 322 times (127µs+0s) by File::Spec::Unix::canonpath at line 64, avg 395ns/call # 322 times (110µs+0s) by File::Spec::Unix::canonpath at line 69, avg 342ns/call # 322 times (104µs+0s) by File::Spec::Unix::canonpath at line 65, avg 324ns/call # 322 times (83µs+0s) by File::Spec::Unix::canonpath at line 67, avg 257ns/call # 322 times (62µs+0s) by File::Spec::Unix::canonpath at line 68, avg 193ns/call # 318 times (75µs+0s) by File::Spec::Unix::canonpath at line 66, avg 237ns/call sub File::Spec::Unix::CORE:subst; # opcode