=head1 NAME
-Basename - parse file specifications
-
fileparse - split a pathname into pieces
basename - extract just the filename from a path
use File::Basename;
- ($name,$path,$suffix) = fileparse($fullname,@suffixlist)
+ ($name,$path,$suffix) = fileparse($fullname,@suffixlist);
+ $name = fileparse($fullname,@suffixlist);
fileparse_set_fstype($os_string);
$basename = basename($fullname,@suffixlist);
$dirname = dirname($fullname);
- ($name,$path,$suffix) = fileparse("lib/File/Basename.pm","\.pm");
+ ($name,$path,$suffix) = fileparse("lib/File/Basename.pm",qr{\.pm});
fileparse_set_fstype("VMS");
$basename = basename("lib/File/Basename.pm",".pm");
$dirname = dirname("lib/File/Basename.pm");
=item fileparse_set_fstype
You select the syntax via the routine fileparse_set_fstype().
+
If the argument passed to it contains one of the substrings
-"VMS", "MSDOS", or "MacOS", the file specification syntax of that
-operating system is used in future calls to fileparse(),
-basename(), and dirname(). If it contains none of these
-substrings, UNIX syntax is used. This pattern matching is
+"VMS", "MSDOS", "MacOS", "AmigaOS" or "MSWin32", the file specification
+syntax of that operating system is used in future calls to
+fileparse(), basename(), and dirname(). If it contains none of
+these substrings, Unix syntax is used. This pattern matching is
case-insensitive. If you've selected VMS syntax, and the file
specification you pass to one of these routines contains a "/",
-they assume you are using UNIX emulation and apply the UNIX syntax
+they assume you are using Unix emulation and apply the Unix syntax
rules instead, for that function call only.
+If the argument passed to it contains one of the substrings "VMS",
+"MSDOS", "MacOS", "AmigaOS", "os2", "MSWin32" or "RISCOS", then the pattern
+matching for suffix removal is performed without regard for case,
+since those systems are not case-sensitive when opening existing files
+(though some of them preserve case on file creation).
+
If you haven't called fileparse_set_fstype(), the syntax is chosen
by examining the builtin variable C<$^O> according to these rules.
separator in the input file specification. The remainder of the input
file specification is then divided into B<name> and B<suffix> based on
the optional patterns you specify in C<@suffixlist>. Each element of
-this list is interpreted as a regular expression, and is matched
+this list can be a qr-quoted pattern (or a string which is interpreted
+as a regular expression), and is matched
against the end of B<name>. If this succeeds, the matching portion of
B<name> is removed and prepended to B<suffix>. By proper use of
C<@suffixlist>, you can remove file types or versions for examination.
B<suffix> together in that order, the result will denote the same
file as the input file specification.
+In scalar context, fileparse() returns only the B<name> part of the filename.
+
=back
=head1 EXAMPLES
-Using UNIX file syntax:
+Using Unix file syntax:
($base,$path,$type) = fileparse('/virgil/aeneid/draft.book7',
- '\.book\d+');
+ qr{\.book\d+});
would yield
$base eq 'draft'
$path eq '/virgil/aeneid/',
- $tail eq '.book7'
+ $type eq '.book7'
Similarly, using VMS syntax:
($name,$dir,$type) = fileparse('Doc_Root:[Help]Rhetoric.Rnh',
- '\..*');
+ qr{\..*});
would yield
$dir eq 'Doc_Root:[Help]'
$type eq '.Rnh'
+=over
+
=item C<basename>
The basename() routine returns the first element of the list produced
-by calling fileparse() with the same arguments. It is provided for
-compatibility with the UNIX shell command basename(1).
+by calling fileparse() with the same arguments, except that it always
+quotes metacharacters in the given suffixes. It is provided for
+programmer compatibility with the Unix shell command basename(1).
=item C<dirname>
second element of the list produced by calling fileparse() with the same
input file specification. (Under VMS, if there is no directory information
in the input file specification, then the current default device and
-directory are returned.) When using UNIX or MSDOS syntax, the return
-value conforms to the behavior of the UNIX shell command dirname(1). This
+directory are returned.) When using Unix or MSDOS syntax, the return
+value conforms to the behavior of the Unix shell command dirname(1). This
is usually the same as the behavior of fileparse(), but differs in some
cases. For example, for the input file specification F<lib/>, fileparse()
considers the directory name to be F<lib/>, while dirname() considers the
directory name to be F<.>).
+=back
+
=cut
-require 5.002;
+
+## use strict;
+# A bit of juggling to insure that C<use re 'taint';> always works, since
+# File::Basename is used during the Perl build, when the re extension may
+# not be available.
+BEGIN {
+ unless (eval { require re; })
+ { eval ' sub re::import { $^H |= 0x00100000; } ' } # HINT_RE_TAINT
+ import re 'taint';
+}
+
+
+
+use 5.006;
+use warnings;
+our(@ISA, @EXPORT, $VERSION, $Fileparse_fstype, $Fileparse_igncase);
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(fileparse fileparse_set_fstype basename dirname);
-#use strict;
-#use vars qw($VERSION $Fileparse_fstype);
-$VERSION = "2.3";
+$VERSION = "2.73";
# fileparse_set_fstype() - specify OS-based rules used in future
# calls to routines in this package
#
-# Currently recognized values: VMS, MSDOS, MacOS
-# Any other name uses Unix-style rules
+# Currently recognized values: VMS, MSDOS, MacOS, AmigaOS, os2, RISCOS
+# Any other name uses Unix-style rules and is case-sensitive
sub fileparse_set_fstype {
- my($old) = $Fileparse_fstype;
- $Fileparse_fstype = $_[0] if $_[0];
- $old;
+ my @old = ($Fileparse_fstype, $Fileparse_igncase);
+ if (@_) {
+ $Fileparse_fstype = $_[0];
+ $Fileparse_igncase = ($_[0] =~ /^(?:MacOS|VMS|AmigaOS|os2|RISCOS|MSWin32|MSDOS)/i);
+ }
+ wantarray ? @old : $old[0];
}
# fileparse() - parse file specification
#
-# Version 2.3 4-Jul-1996 Charles Bailey bailey@genetics.upenn.edu
+# Version 2.4 27-Sep-1996 Charles Bailey bailey@genetics.upenn.edu
sub fileparse {
my($fullname,@suffices) = @_;
- my($fstype) = $Fileparse_fstype;
+ unless (defined $fullname) {
+ require Carp;
+ Carp::croak("fileparse(): need a valid pathname");
+ }
+ my($fstype,$igncase) = ($Fileparse_fstype, $Fileparse_igncase);
my($dirpath,$tail,$suffix,$basename);
+ my($taint) = substr($fullname,0,0); # Is $fullname tainted?
if ($fstype =~ /^VMS/i) {
if ($fullname =~ m#/#) { $fstype = '' } # We're doing Unix emulation
else {
- ($dirpath,$basename) = ($fullname =~ /(.*[:>\]])?(.*)/);
+ ($dirpath,$basename) = ($fullname =~ /^(.*[:>\]])?(.*)/s);
+ $dirpath ||= ''; # should always be defined
}
}
- if ($fstype =~ /^MSDOS/i) {
- ($dirpath,$basename) = ($fullname =~ /(.*[:\\])?(.*)/);
- $dirpath .= '.\\' unless $dirpath =~ /\\$/;
+ if ($fstype =~ /^MS(DOS|Win32)|epoc/i) {
+ ($dirpath,$basename) = ($fullname =~ /^((?:.*[:\\\/])?)(.*)/s);
+ $dirpath .= '.\\' unless $dirpath =~ /[\\\/]\z/;
+ }
+ elsif ($fstype =~ /^os2/i) {
+ ($dirpath,$basename) = ($fullname =~ m#^((?:.*[:\\/])?)(.*)#s);
+ $dirpath = './' unless $dirpath; # Can't be 0
+ $dirpath .= '/' unless $dirpath =~ m#[\\/]\z#;
}
- elsif ($fstype =~ /^MacOS/i) {
- ($dirpath,$basename) = ($fullname =~ /(.*:)?(.*)/);
+ elsif ($fstype =~ /^MacOS/si) {
+ ($dirpath,$basename) = ($fullname =~ /^(.*:)?(.*)/s);
+ $dirpath = ':' unless $dirpath;
+ }
+ elsif ($fstype =~ /^AmigaOS/i) {
+ ($dirpath,$basename) = ($fullname =~ /(.*[:\/])?(.*)/s);
+ $dirpath = './' unless $dirpath;
}
elsif ($fstype !~ /^VMS/i) { # default to Unix
- ($dirpath,$basename) = ($fullname =~ m#(.*/)?(.*)#);
+ ($dirpath,$basename) = ($fullname =~ m#^(.*/)?(.*)#s);
+ if ($^O eq 'VMS' and $fullname =~ m:^(/[^/]+/000000(/|$))(.*):) {
+ # dev:[000000] is top of VMS tree, similar to Unix '/'
+ # so strip it off and treat the rest as "normal"
+ my $devspec = $1;
+ my $remainder = $3;
+ ($dirpath,$basename) = ($remainder =~ m#^(.*/)?(.*)#s);
+ $dirpath ||= ''; # should always be defined
+ $dirpath = $devspec.$dirpath;
+ }
$dirpath = './' unless $dirpath;
}
if (@suffices) {
$tail = '';
foreach $suffix (@suffices) {
- if ($basename =~ /([\x00-\xff]*?)($suffix)$/) {
- $tail = $2 . $tail;
- $basename = $1;
+ my $pat = ($igncase ? '(?i)' : '') . "($suffix)\$";
+ if ($basename =~ s/$pat//s) {
+ $taint .= substr($suffix,0,0);
+ $tail = $1 . $tail;
}
}
}
- wantarray ? ($basename,$dirpath,$tail) : $basename;
-
+ $tail .= $taint if defined $tail; # avoid warning if $tail == undef
+ wantarray ? ($basename .= $taint, $dirpath .= $taint, $tail)
+ : ($basename .= $taint);
}
if ($_[0] =~ m#/#) { $fstype = '' }
else { return $dirname || $ENV{DEFAULT} }
}
- if ($fstype =~ /MacOS/i) { return $dirname }
- elsif ($fstype =~ /MSDOS/i) {
- if ( $dirname =~ /:\\$/) { return $dirname }
- chop $dirname;
- $dirname =~ s:[^\\]+$:: unless length($basename);
- $dirname = '.' unless length($dirname);
+ if ($fstype =~ /MacOS/i) {
+ if( !length($basename) && $dirname !~ /^[^:]+:\z/) {
+ $dirname =~ s/([^:]):\z/$1/s;
+ ($basename,$dirname) = fileparse $dirname;
+ }
+ $dirname .= ":" unless $dirname =~ /:\z/;
+ }
+ elsif ($fstype =~ /MS(DOS|Win32)|os2/i) {
+ $dirname =~ s/([^:])[\\\/]*\z/$1/;
+ unless( length($basename) ) {
+ ($basename,$dirname) = fileparse $dirname;
+ $dirname =~ s/([^:])[\\\/]*\z/$1/;
+ }
}
- else {
- if ( $dirname =~ m:^/+$:) { return '/'; }
+ elsif ($fstype =~ /AmigaOS/i) {
+ if ( $dirname =~ /:\z/) { return $dirname }
chop $dirname;
- $dirname =~ s:[^/]+$:: unless length($basename);
- $dirname =~ s:/+$:: ;
- $dirname = '.' unless length($dirname);
+ $dirname =~ s#[^:/]+\z## unless length($basename);
+ }
+ else {
+ $dirname =~ s:(.)/*\z:$1:s;
+ unless( length($basename) ) {
+ local($File::Basename::Fileparse_fstype) = $fstype;
+ ($basename,$dirname) = fileparse $dirname;
+ $dirname =~ s:(.)/*\z:$1:s;
+ }
}
$dirname;
}
-$Fileparse_fstype = $^O;
+fileparse_set_fstype $^O;
1;
projects / p5sagit/p5-mst-13.2.git / blobdiff