dslinux/user/perl/lib/File/Spec Cygwin.pm Epoc.pm Functions.pm Mac.pm OS2.pm Unix.pm VMS.pm Win32.pm
cayenne
dslinux_cayenne at user.in-berlin.de
Mon Dec 4 18:00:41 CET 2006
Update of /cvsroot/dslinux/dslinux/user/perl/lib/File/Spec
In directory antilope:/tmp/cvs-serv17422/lib/File/Spec
Added Files:
Cygwin.pm Epoc.pm Functions.pm Mac.pm OS2.pm Unix.pm VMS.pm
Win32.pm
Log Message:
Adding fresh perl source to HEAD to branch from
--- NEW FILE: Epoc.pm ---
package File::Spec::Epoc;
use strict;
use vars qw($VERSION @ISA);
$VERSION = '1.1';
require File::Spec::Unix;
@ISA = qw(File::Spec::Unix);
=head1 NAME
File::Spec::Epoc - methods for Epoc file specs
=head1 SYNOPSIS
require File::Spec::Epoc; # Done internally by File::Spec if needed
=head1 DESCRIPTION
See File::Spec::Unix for a documentation of the methods provided
there. This package overrides the implementation of these methods, not
the semantics.
This package is still work in progress ;-)
=cut
sub case_tolerant {
return 1;
}
=pod
=over 4
=item canonpath()
No physical check on the filesystem, but a logical cleanup of a
path. On UNIX eliminated successive slashes and successive "/.".
=back
=cut
sub canonpath {
my ($self,$path) = @_;
$path =~ s|/+|/|g; # xx////xx -> xx/xx
$path =~ s|(/\.)+/|/|g; # xx/././xx -> xx/xx
$path =~ s|^(\./)+||s unless $path eq "./"; # ./xx -> xx
$path =~ s|^/(\.\./)+|/|s; # /../../xx -> xx
$path =~ s|/\Z(?!\n)|| unless $path eq "/"; # xx/ -> xx
return $path;
}
=pod
=head1 AUTHOR
o.flebbe at gmx.de
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
implementation of these methods, not the semantics.
=cut
1;
--- NEW FILE: Unix.pm ---
package File::Spec::Unix;
use strict;
use vars qw($VERSION);
$VERSION = '1.5';
=head1 NAME
File::Spec::Unix - File::Spec for Unix, base for other File::Spec modules
=head1 SYNOPSIS
require File::Spec::Unix; # Done automatically by File::Spec
=head1 DESCRIPTION
Methods for manipulating file specifications. Other File::Spec
modules, such as File::Spec::Mac, inherit from File::Spec::Unix and
override specific methods.
=head1 METHODS
=over 2
=item canonpath()
No physical check on the filesystem, but a logical cleanup of a
path. On UNIX eliminates successive slashes and successive "/.".
$cpath = File::Spec->canonpath( $path ) ;
Note that this does *not* collapse F<x/../y> sections into F<y>. This
is by design. If F</foo> on your system is a symlink to F</bar/baz>,
then F</foo/../quux> is actually F</bar/quux>, not F</quux> as a naive
F<../>-removal would give you. If you want to do this kind of
processing, you probably want C<Cwd>'s C<realpath()> function to
actually traverse the filesystem cleaning up paths like this.
=cut
sub canonpath {
my ($self,$path) = @_;
# Handle POSIX-style node names beginning with double slash (qnx, nto)
# Handle network path names beginning with double slash (cygwin)
# (POSIX says: "a pathname that begins with two successive slashes
# may be interpreted in an implementation-defined manner, although
# more than two leading slashes shall be treated as a single slash.")
my $node = '';
if ( $^O =~ m/^(?:qnx|nto|cygwin)$/ && $path =~ s:^(//[^/]+)(/|\z):/:s ) {
$node = $1;
}
# This used to be
# $path =~ s|/+|/|g unless($^O eq 'cygwin');
# but that made tests 29, 30, 35, 46, and 213 (as of #13272) to fail
# (Mainly because trailing "" directories didn't get stripped).
# Why would cygwin avoid collapsing multiple slashes into one? --jhi
$path =~ s|/+|/|g; # xx////xx -> xx/xx
$path =~ s@(/\.)+(/|\Z(?!\n))@/@g; # xx/././xx -> xx/xx
$path =~ s|^(\./)+||s unless $path eq "./"; # ./xx -> xx
$path =~ s|^/(\.\./)+|/|; # /../../xx -> xx
$path =~ s|^/\.\.$|/|; # /.. -> /
$path =~ s|/\Z(?!\n)|| unless $path eq "/"; # xx/ -> xx
return "$node$path";
}
=item catdir()
Concatenate two or more directory names to form a complete path ending
with a directory. But remove the trailing slash from the resulting
string, because it doesn't look good, isn't necessary and confuses
OS2. Of course, if this is the root directory, don't cut off the
trailing slash :-)
=cut
sub catdir {
my $self = shift;
$self->canonpath(join('/', @_, '')); # '' because need a trailing '/'
}
=item catfile
Concatenate one or more directory names and a filename to form a
complete path ending with a filename
=cut
sub catfile {
my $self = shift;
my $file = $self->canonpath(pop @_);
return $file unless @_;
my $dir = $self->catdir(@_);
$dir .= "/" unless substr($dir,-1) eq "/";
return $dir.$file;
}
=item curdir
Returns a string representation of the current directory. "." on UNIX.
=cut
sub curdir () { '.' }
=item devnull
Returns a string representation of the null device. "/dev/null" on UNIX.
=cut
sub devnull () { '/dev/null' }
=item rootdir
Returns a string representation of the root directory. "/" on UNIX.
=cut
sub rootdir () { '/' }
=item tmpdir
Returns a string representation of the first writable directory from
the following list or the current directory if none from the list are
writable:
$ENV{TMPDIR}
/tmp
Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR}
is tainted, it is not used.
=cut
my $tmpdir;
sub _tmpdir {
return $tmpdir if defined $tmpdir;
my $self = shift;
my @dirlist = @_;
{
no strict 'refs';
if (${"\cTAINT"}) { # Check for taint mode on perl >= 5.8.0
require Scalar::Util;
@dirlist = grep { ! Scalar::Util::tainted($_) } @dirlist;
}
}
foreach (@dirlist) {
next unless defined && -d && -w _;
$tmpdir = $_;
last;
}
$tmpdir = $self->curdir unless defined $tmpdir;
$tmpdir = defined $tmpdir && $self->canonpath($tmpdir);
return $tmpdir;
}
sub tmpdir {
return $tmpdir if defined $tmpdir;
$tmpdir = $_[0]->_tmpdir( $ENV{TMPDIR}, "/tmp" );
}
=item updir
Returns a string representation of the parent directory. ".." on UNIX.
=cut
sub updir () { '..' }
=item no_upwards
Given a list of file names, strip out those that refer to a parent
directory. (Does not strip symlinks, only '.', '..', and equivalents.)
=cut
sub no_upwards {
my $self = shift;
return grep(!/^\.{1,2}\Z(?!\n)/s, @_);
}
=item case_tolerant
Returns a true or false value indicating, respectively, that alphabetic
is not or is significant when comparing file specifications.
=cut
sub case_tolerant () { 0 }
=item file_name_is_absolute
Takes as argument a path and returns true if it is an absolute path.
This does not consult the local filesystem on Unix, Win32, OS/2 or Mac
OS (Classic). It does consult the working environment for VMS (see
L<File::Spec::VMS/file_name_is_absolute>).
=cut
sub file_name_is_absolute {
my ($self,$file) = @_;
return scalar($file =~ m:^/:s);
}
=item path
Takes no argument, returns the environment variable PATH as an array.
=cut
sub path {
return () unless exists $ENV{PATH};
my @path = split(':', $ENV{PATH});
foreach (@path) { $_ = '.' if $_ eq '' }
return @path;
}
=item join
join is the same as catfile.
=cut
sub join {
my $self = shift;
return $self->catfile(@_);
}
=item splitpath
($volume,$directories,$file) = File::Spec->splitpath( $path );
($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
Splits a path into volume, directory, and filename portions. On systems
with no concept of volume, returns '' for volume.
For systems with no syntax differentiating filenames from directories,
assumes that the last file is a path unless $no_file is true or a
trailing separator or /. or /.. is present. On Unix this means that $no_file
true makes this return ( '', $path, '' ).
The directory portion may or may not be returned with a trailing '/'.
The results can be passed to L</catpath()> to get back a path equivalent to
(usually identical to) the original path.
=cut
sub splitpath {
my ($self,$path, $nofile) = @_;
my ($volume,$directory,$file) = ('','','');
if ( $nofile ) {
$directory = $path;
}
else {
$path =~ m|^ ( (?: .* / (?: \.\.?\Z(?!\n) )? )? ) ([^/]*) |xs;
$directory = $1;
$file = $2;
}
return ($volume,$directory,$file);
}
=item splitdir
The opposite of L</catdir()>.
@dirs = File::Spec->splitdir( $directories );
$directories must be only the directory portion of the path on systems
that have the concept of a volume or that have path syntax that differentiates
files from directories.
Unlike just splitting the directories on the separator, empty
directory names (C<''>) can be returned, because these are significant
on some OSs.
On Unix,
File::Spec->splitdir( "/a/b//c/" );
Yields:
( '', 'a', 'b', '', 'c', '' )
=cut
sub splitdir {
return split m|/|, $_[1], -1; # Preserve trailing fields
}
=item catpath()
Takes volume, directory and file portions and returns an entire path. Under
Unix, $volume is ignored, and directory and file are concatenated. A '/' is
inserted if needed (though if the directory portion doesn't start with
'/' it is not added). On other OSs, $volume is significant.
=cut
sub catpath {
my ($self,$volume,$directory,$file) = @_;
if ( $directory ne '' &&
$file ne '' &&
substr( $directory, -1 ) ne '/' &&
substr( $file, 0, 1 ) ne '/'
) {
$directory .= "/$file" ;
}
else {
$directory .= $file ;
}
return $directory ;
}
=item abs2rel
Takes a destination path and an optional base path returns a relative path
from the base path to the destination path:
$rel_path = File::Spec->abs2rel( $path ) ;
$rel_path = File::Spec->abs2rel( $path, $base ) ;
If $base is not present or '', then L<cwd()|Cwd> is used. If $base is
relative, then it is converted to absolute form using
L</rel2abs()>. This means that it is taken to be relative to
L<cwd()|Cwd>.
On systems that have a grammar that indicates filenames, this ignores the
$base filename. Otherwise all path components are assumed to be
directories.
If $path is relative, it is converted to absolute form using L</rel2abs()>.
This means that it is taken to be relative to L<cwd()|Cwd>.
No checks against the filesystem are made. On VMS, there is
interaction with the working environment, as logicals and
macros are expanded.
Based on code written by Shigio Yamaguchi.
=cut
sub abs2rel {
my($self,$path,$base) = @_;
# Clean up $path
if ( ! $self->file_name_is_absolute( $path ) ) {
$path = $self->rel2abs( $path ) ;
}
else {
$path = $self->canonpath( $path ) ;
}
# Figure out the effective $base and clean it up.
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd();
}
elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
}
else {
$base = $self->canonpath( $base ) ;
}
# Now, remove all leading components that are the same
my @pathchunks = $self->splitdir( $path);
my @basechunks = $self->splitdir( $base);
while (@pathchunks && @basechunks && $pathchunks[0] eq $basechunks[0]) {
shift @pathchunks ;
shift @basechunks ;
}
$path = CORE::join( '/', @pathchunks );
$base = CORE::join( '/', @basechunks );
# $base now contains the directories the resulting relative path
# must ascend out of before it can descend to $path_directory. So,
# replace all names with $parentDir
$base =~ s|[^/]+|..|g ;
# Glue the two together, using a separator if necessary, and preventing an
# empty result.
if ( $path ne '' && $base ne '' ) {
$path = "$base/$path" ;
} else {
$path = "$base$path" ;
}
return $self->canonpath( $path ) ;
}
=item rel2abs()
Converts a relative path to an absolute path.
$abs_path = File::Spec->rel2abs( $path ) ;
$abs_path = File::Spec->rel2abs( $path, $base ) ;
If $base is not present or '', then L<cwd()|Cwd> is used. If $base is
relative, then it is converted to absolute form using
L</rel2abs()>. This means that it is taken to be relative to
L<cwd()|Cwd>.
On systems that have a grammar that indicates filenames, this ignores
the $base filename. Otherwise all path components are assumed to be
directories.
If $path is absolute, it is cleaned up and returned using L</canonpath()>.
No checks against the filesystem are made. On VMS, there is
interaction with the working environment, as logicals and
macros are expanded.
Based on code written by Shigio Yamaguchi.
=cut
sub rel2abs {
my ($self,$path,$base ) = @_;
# Clean up $path
if ( ! $self->file_name_is_absolute( $path ) ) {
# Figure out the effective $base and clean it up.
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd();
}
elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
}
else {
$base = $self->canonpath( $base ) ;
}
# Glom them together
$path = $self->catdir( $base, $path ) ;
}
return $self->canonpath( $path ) ;
}
=back
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
L<File::Spec>
=cut
# Internal routine to File::Spec, no point in making this public since
# it is the standard Cwd interface. Most of the platform-specific
# File::Spec subclasses use this.
sub _cwd {
require Cwd;
Cwd::cwd();
}
# Internal method to reduce xx\..\yy -> yy
sub _collapse {
my($fs, $path) = @_;
my $updir = $fs->updir;
my $curdir = $fs->curdir;
my($vol, $dirs, $file) = $fs->splitpath($path);
my @dirs = $fs->splitdir($dirs);
my @collapsed;
foreach my $dir (@dirs) {
if( $dir eq $updir and # if we have an updir
@collapsed and # and something to collapse
length $collapsed[-1] and # and its not the rootdir
$collapsed[-1] ne $updir and # nor another updir
$collapsed[-1] ne $curdir # nor the curdir
)
{ # then
pop @collapsed; # collapse
}
else { # else
push @collapsed, $dir; # just hang onto it
}
}
return $fs->catpath($vol,
$fs->catdir(@collapsed),
$file
);
}
1;
--- NEW FILE: Win32.pm ---
package File::Spec::Win32;
use strict;
use vars qw(@ISA $VERSION);
require File::Spec::Unix;
$VERSION = '1.6';
@ISA = qw(File::Spec::Unix);
=head1 NAME
File::Spec::Win32 - methods for Win32 file specs
=head1 SYNOPSIS
require File::Spec::Win32; # Done internally by File::Spec if needed
=head1 DESCRIPTION
See File::Spec::Unix for a documentation of the methods provided
there. This package overrides the implementation of these methods, not
the semantics.
=over 4
=item devnull
Returns a string representation of the null device.
=cut
sub devnull {
return "nul";
}
sub rootdir () { '\\' }
=item tmpdir
Returns a string representation of the first existing directory
from the following list:
$ENV{TMPDIR}
$ENV{TEMP}
$ENV{TMP}
SYS:/temp
C:\system\temp
C:/temp
/tmp
/
The SYS:/temp is preferred in Novell NetWare and the C:\system\temp
for Symbian (the File::Spec::Win32 is used also for those platforms).
Since Perl 5.8.0, if running under taint mode, and if the environment
variables are tainted, they are not used.
=cut
my $tmpdir;
sub tmpdir {
return $tmpdir if defined $tmpdir;
$tmpdir = $_[0]->_tmpdir( @ENV{qw(TMPDIR TEMP TMP)},
'SYS:/temp',
'C:\system\temp',
'C:/temp',
'/tmp',
'/' );
}
sub case_tolerant {
return 1;
}
sub file_name_is_absolute {
my ($self,$file) = @_;
return scalar($file =~ m{^([a-z]:)?[\\/]}is);
}
=item catfile
Concatenate one or more directory names and a filename to form a
complete path ending with a filename
=cut
sub catfile {
my $self = shift;
my $file = $self->canonpath(pop @_);
return $file unless @_;
my $dir = $self->catdir(@_);
$dir .= "\\" unless substr($dir,-1) eq "\\";
return $dir.$file;
}
sub catdir {
my $self = shift;
my @args = @_;
foreach (@args) {
tr[/][\\];
# append a backslash to each argument unless it has one there
$_ .= "\\" unless m{\\$};
}
return $self->canonpath(join('', @args));
}
sub path {
my @path = split(';', $ENV{PATH});
s/"//g for @path;
@path = grep length, @path;
unshift(@path, ".");
return @path;
}
=item canonpath
No physical check on the filesystem, but a logical cleanup of a
path. On UNIX eliminated successive slashes and successive "/.".
On Win32 makes
dir1\dir2\dir3\..\..\dir4 -> \dir\dir4 and even
dir1\dir2\dir3\...\dir4 -> \dir\dir4
=cut
sub canonpath {
my ($self,$path) = @_;
$path =~ s/^([a-z]:)/\u$1/s;
$path =~ s|/|\\|g;
$path =~ s|([^\\])\\+|$1\\|g; # xx\\\\xx -> xx\xx
$path =~ s|(\\\.)+\\|\\|g; # xx\.\.\xx -> xx\xx
$path =~ s|^(\.\\)+||s unless $path eq ".\\"; # .\xx -> xx
$path =~ s|\\\Z(?!\n)||
unless $path =~ m{^([A-Z]:)?\\\Z(?!\n)}s; # xx\ -> xx
# xx1/xx2/xx3/../../xx -> xx1/xx
$path =~ s|\\\.\.\.\\|\\\.\.\\\.\.\\|g; # \...\ is 2 levels up
$path =~ s|^\.\.\.\\|\.\.\\\.\.\\|g; # ...\ is 2 levels up
return $path if $path =~ m|^\.\.|; # skip relative paths
return $path unless $path =~ /\.\./; # too few .'s to cleanup
return $path if $path =~ /\.\.\.\./; # too many .'s to cleanup
$path =~ s{^\\\.\.$}{\\}; # \.. -> \
1 while $path =~ s{^\\\.\.}{}; # \..\xx -> \xx
return $self->_collapse($path);
}
=item splitpath
($volume,$directories,$file) = File::Spec->splitpath( $path );
($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
Splits a path into volume, directory, and filename portions. Assumes that
the last file is a path unless the path ends in '\\', '\\.', '\\..'
or $no_file is true. On Win32 this means that $no_file true makes this return
( $volume, $path, '' ).
Separators accepted are \ and /.
Volumes can be drive letters or UNC sharenames (\\server\share).
The results can be passed to L</catpath> to get back a path equivalent to
(usually identical to) the original path.
=cut
sub splitpath {
my ($self,$path, $nofile) = @_;
my ($volume,$directory,$file) = ('','','');
if ( $nofile ) {
$path =~
m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? )
(.*)
}xs;
$volume = $1;
$directory = $2;
}
else {
$path =~
m{^ ( (?: [a-zA-Z]: |
(?:\\\\|//)[^\\/]+[\\/][^\\/]+
)?
)
( (?:.*[\\/](?:\.\.?\Z(?!\n))?)? )
(.*)
}xs;
$volume = $1;
$directory = $2;
$file = $3;
}
return ($volume,$directory,$file);
}
=item splitdir
The opposite of L<catdir()|File::Spec/catdir()>.
@dirs = File::Spec->splitdir( $directories );
$directories must be only the directory portion of the path on systems
that have the concept of a volume or that have path syntax that differentiates
files from directories.
Unlike just splitting the directories on the separator, leading empty and
trailing directory entries can be returned, because these are significant
on some OSs. So,
File::Spec->splitdir( "/a/b/c" );
Yields:
( '', 'a', 'b', '', 'c', '' )
=cut
sub splitdir {
my ($self,$directories) = @_ ;
#
# split() likes to forget about trailing null fields, so here we
# check to be sure that there will not be any before handling the
# simple case.
#
if ( $directories !~ m|[\\/]\Z(?!\n)| ) {
return split( m|[\\/]|, $directories );
}
else {
#
# since there was a trailing separator, add a file name to the end,
# then do the split, then replace it with ''.
#
my( @directories )= split( m|[\\/]|, "${directories}dummy" ) ;
$directories[ $#directories ]= '' ;
return @directories ;
}
}
=item catpath
Takes volume, directory and file portions and returns an entire path. Under
Unix, $volume is ignored, and this is just like catfile(). On other OSs,
the $volume become significant.
=cut
sub catpath {
my ($self,$volume,$directory,$file) = @_;
# If it's UNC, make sure the glue separator is there, reusing
# whatever separator is first in the $volume
my $v;
$volume .= $v
if ( (($v) = $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s) &&
$directory =~ m@^[^\\/]@s
) ;
$volume .= $directory ;
# If the volume is not just A:, make sure the glue separator is
# there, reusing whatever separator is first in the $volume if possible.
if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s &&
$volume =~ m@[^\\/]\Z(?!\n)@ &&
$file =~ m@[^\\/]@
) {
$volume =~ m@([\\/])@ ;
my $sep = $1 ? $1 : '\\' ;
$volume .= $sep ;
}
$volume .= $file ;
return $volume ;
}
sub abs2rel {
my($self,$path,$base) = @_;
$base = $self->_cwd() unless defined $base and length $base;
for ($path, $base) { $_ = $self->canonpath($_) }
my ($path_volume) = $self->splitpath($path, 1);
my ($base_volume) = $self->splitpath($base, 1);
# Can't relativize across volumes
return $path unless $path_volume eq $base_volume;
for ($path, $base) { $_ = $self->rel2abs($_) }
my $path_directories = ($self->splitpath($path, 1))[1];
my $base_directories = ($self->splitpath($base, 1))[1];
# Now, remove all leading components that are the same
my @pathchunks = $self->splitdir( $path_directories );
my @basechunks = $self->splitdir( $base_directories );
while ( @pathchunks &&
@basechunks &&
lc( $pathchunks[0] ) eq lc( $basechunks[0] )
) {
shift @pathchunks ;
shift @basechunks ;
}
my $result_dirs = $self->catdir( ($self->updir) x @basechunks, @pathchunks );
return $self->canonpath( $self->catpath('', $result_dirs, '') );
}
sub rel2abs {
my ($self,$path,$base ) = @_;
if ( ! $self->file_name_is_absolute( $path ) ) {
if ( !defined( $base ) || $base eq '' ) {
require Cwd ;
$base = Cwd::getdcwd( ($self->splitpath( $path ))[0] ) if defined &Cwd::getdcwd ;
$base = $self->_cwd() unless defined $base ;
}
elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
}
else {
$base = $self->canonpath( $base ) ;
}
my ( $path_directories, $path_file ) =
($self->splitpath( $path, 1 ))[1,2] ;
my ( $base_volume, $base_directories ) =
$self->splitpath( $base, 1 ) ;
$path = $self->catpath(
$base_volume,
$self->catdir( $base_directories, $path_directories ),
$path_file
) ;
}
return $self->canonpath( $path ) ;
}
=back
=head2 Note For File::Spec::Win32 Maintainers
Novell NetWare inherits its File::Spec behaviour from File::Spec::Win32.
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
implementation of these methods, not the semantics.
=cut
1;
--- NEW FILE: VMS.pm ---
package File::Spec::VMS;
use strict;
use vars qw(@ISA $VERSION);
require File::Spec::Unix;
$VERSION = '1.4';
@ISA = qw(File::Spec::Unix);
use File::Basename;
use VMS::Filespec;
=head1 NAME
File::Spec::VMS - methods for VMS file specs
=head1 SYNOPSIS
require File::Spec::VMS; # Done internally by File::Spec if needed
=head1 DESCRIPTION
See File::Spec::Unix for a documentation of the methods provided
there. This package overrides the implementation of these methods, not
the semantics.
=over 4
=item canonpath (override)
Removes redundant portions of file specifications according to VMS syntax.
=cut
sub canonpath {
my($self,$path) = @_;
if ($path =~ m|/|) { # Fake Unix
my $pathify = $path =~ m|/\Z(?!\n)|;
$path = $self->SUPER::canonpath($path);
if ($pathify) { return vmspath($path); }
else { return vmsify($path); }
}
else {
$path =~ tr/<>/[]/; # < and > ==> [ and ]
$path =~ s/\]\[\./\.\]\[/g; # ][. ==> .][
$path =~ s/\[000000\.\]\[/\[/g; # [000000.][ ==> [
$path =~ s/\[000000\./\[/g; # [000000. ==> [
$path =~ s/\.\]\[000000\]/\]/g; # .][000000] ==> ]
$path =~ s/\.\]\[/\./g; # foo.][bar ==> foo.bar
1 while ($path =~ s/([\[\.])(-+)\.(-+)([\.\]])/$1$2$3$4/);
# That loop does the following
# with any amount of dashes:
# .-.-. ==> .--.
# [-.-. ==> [--.
# .-.-] ==> .--]
# [-.-] ==> [--]
1 while ($path =~ s/([\[\.])[^\]\.]+\.-(-+)([\]\.])/$1$2$3/);
# That loop does the following
# with any amount (minimum 2)
# of dashes:
# .foo.--. ==> .-.
# .foo.--] ==> .-]
# [foo.--. ==> [-.
# [foo.--] ==> [-]
#
# And then, the remaining cases
$path =~ s/\[\.-/[-/; # [.- ==> [-
$path =~ s/\.[^\]\.]+\.-\./\./g; # .foo.-. ==> .
$path =~ s/\[[^\]\.]+\.-\./\[/g; # [foo.-. ==> [
$path =~ s/\.[^\]\.]+\.-\]/\]/g; # .foo.-] ==> ]
$path =~ s/\[[^\]\.]+\.-\]/\[000000\]/g;# [foo.-] ==> [000000]
$path =~ s/\[\]//; # [] ==>
return $path;
}
}
=item catdir (override)
Concatenates a list of file specifications, and returns the result as a
VMS-syntax directory specification. No check is made for "impossible"
cases (e.g. elements other than the first being absolute filespecs).
=cut
sub catdir {
my ($self, at dirs) = @_;
my $dir = pop @dirs;
@dirs = grep($_, at dirs);
my $rslt;
if (@dirs) {
my $path = (@dirs == 1 ? $dirs[0] : $self->catdir(@dirs));
my ($spath,$sdir) = ($path,$dir);
$spath =~ s/\.dir\Z(?!\n)//; $sdir =~ s/\.dir\Z(?!\n)//;
$sdir = $self->eliminate_macros($sdir) unless $sdir =~ /^[\w\-]+\Z(?!\n)/s;
$rslt = $self->fixpath($self->eliminate_macros($spath)."/$sdir",1);
# Special case for VMS absolute directory specs: these will have had device
# prepended during trip through Unix syntax in eliminate_macros(), since
# Unix syntax has no way to express "absolute from the top of this device's
# directory tree".
if ($spath =~ /^[\[<][^.\-]/s) { $rslt =~ s/^[^\[<]+//s; }
}
else {
if (not defined $dir or not length $dir) { $rslt = ''; }
elsif ($dir =~ /^\$\([^\)]+\)\Z(?!\n)/s) { $rslt = $dir; }
else { $rslt = vmspath($dir); }
}
return $self->canonpath($rslt);
}
=item catfile (override)
Concatenates a list of file specifications, and returns the result as a
VMS-syntax file specification.
=cut
sub catfile {
my ($self, at files) = @_;
my $file = $self->canonpath(pop @files);
@files = grep($_, at files);
my $rslt;
if (@files) {
my $path = (@files == 1 ? $files[0] : $self->catdir(@files));
my $spath = $path;
$spath =~ s/\.dir\Z(?!\n)//;
if ($spath =~ /^[^\)\]\/:>]+\)\Z(?!\n)/s && basename($file) eq $file) {
$rslt = "$spath$file";
}
else {
$rslt = $self->eliminate_macros($spath);
$rslt = vmsify($rslt.($rslt ? '/' : '').unixify($file));
}
}
else { $rslt = (defined($file) && length($file)) ? vmsify($file) : ''; }
return $self->canonpath($rslt);
}
=item curdir (override)
Returns a string representation of the current directory: '[]'
=cut
sub curdir {
return '[]';
}
=item devnull (override)
Returns a string representation of the null device: '_NLA0:'
=cut
sub devnull {
return "_NLA0:";
}
=item rootdir (override)
Returns a string representation of the root directory: 'SYS$DISK:[000000]'
=cut
sub rootdir {
return 'SYS$DISK:[000000]';
}
=item tmpdir (override)
Returns a string representation of the first writable directory
from the following list or '' if none are writable:
sys$scratch:
$ENV{TMPDIR}
Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR}
is tainted, it is not used.
=cut
my $tmpdir;
sub tmpdir {
return $tmpdir if defined $tmpdir;
$tmpdir = $_[0]->_tmpdir( 'sys$scratch:', $ENV{TMPDIR} );
}
=item updir (override)
Returns a string representation of the parent directory: '[-]'
=cut
sub updir {
return '[-]';
}
=item case_tolerant (override)
VMS file specification syntax is case-tolerant.
=cut
sub case_tolerant {
return 1;
}
=item path (override)
Translate logical name DCL$PATH as a searchlist, rather than trying
to C<split> string value of C<$ENV{'PATH'}>.
=cut
sub path {
my (@dirs,$dir,$i);
while ($dir = $ENV{'DCL$PATH;' . $i++}) { push(@dirs,$dir); }
return @dirs;
}
=item file_name_is_absolute (override)
Checks for VMS directory spec as well as Unix separators.
=cut
sub file_name_is_absolute {
my ($self,$file) = @_;
# If it's a logical name, expand it.
$file = $ENV{$file} while $file =~ /^[\w\$\-]+\Z(?!\n)/s && $ENV{$file};
return scalar($file =~ m!^/!s ||
$file =~ m![<\[][^.\-\]>]! ||
$file =~ /:[^<\[]/);
}
=item splitpath (override)
Splits using VMS syntax.
=cut
sub splitpath {
my($self,$path) = @_;
my($dev,$dir,$file) = ('','','');
vmsify($path) =~ /(.+:)?([\[<].*[\]>])?(.*)/s;
return ($1 || '',$2 || '',$3);
}
=item splitdir (override)
Split dirspec using VMS syntax.
=cut
sub splitdir {
my($self,$dirspec) = @_;
$dirspec =~ tr/<>/[]/; # < and > ==> [ and ]
$dirspec =~ s/\]\[\./\.\]\[/g; # ][. ==> .][
$dirspec =~ s/\[000000\.\]\[/\[/g; # [000000.][ ==> [
$dirspec =~ s/\[000000\./\[/g; # [000000. ==> [
$dirspec =~ s/\.\]\[000000\]/\]/g; # .][000000] ==> ]
$dirspec =~ s/\.\]\[/\./g; # foo.][bar ==> foo.bar
while ($dirspec =~ s/(^|[\[\<\.])\-(\-+)($|[\]\>\.])/$1-.$2$3/g) {}
# That loop does the following
# with any amount of dashes:
# .--. ==> .-.-.
# [--. ==> [-.-.
# .--] ==> .-.-]
# [--] ==> [-.-]
$dirspec = "[$dirspec]" unless $dirspec =~ /[\[<]/; # make legal
my(@dirs) = split('\.', vmspath($dirspec));
$dirs[0] =~ s/^[\[<]//s; $dirs[-1] =~ s/[\]>]\Z(?!\n)//s;
@dirs;
}
=item catpath (override)
Construct a complete filespec using VMS syntax
=cut
sub catpath {
my($self,$dev,$dir,$file) = @_;
# We look for a volume in $dev, then in $dir, but not both
my ($dir_volume, $dir_dir, $dir_file) = $self->splitpath($dir);
$dev = $dir_volume unless length $dev;
$dir = length $dir_file ? $self->catfile($dir_dir, $dir_file) : $dir_dir;
if ($dev =~ m|^/+([^/]+)|) { $dev = "$1:"; }
else { $dev .= ':' unless $dev eq '' or $dev =~ /:\Z(?!\n)/; }
if (length($dev) or length($dir)) {
$dir = "[$dir]" unless $dir =~ /[\[<\/]/;
$dir = vmspath($dir);
}
"$dev$dir$file";
}
=item abs2rel (override)
Use VMS syntax when converting filespecs.
=cut
sub abs2rel {
my $self = shift;
return vmspath(File::Spec::Unix::abs2rel( $self, @_ ))
if grep m{/}, @_;
my($path,$base) = @_;
$base = $self->_cwd() unless defined $base and length $base;
for ($path, $base) { $_ = $self->canonpath($_) }
# Are we even starting $path on the same (node::)device as $base? Note that
# logical paths or nodename differences may be on the "same device"
# but the comparison that ignores device differences so as to concatenate
# [---] up directory specs is not even a good idea in cases where there is
# a logical path difference between $path and $base nodename and/or device.
# Hence we fall back to returning the absolute $path spec
# if there is a case blind device (or node) difference of any sort
# and we do not even try to call $parse() or consult %ENV for $trnlnm()
# (this module needs to run on non VMS platforms after all).
my ($path_volume, $path_directories, $path_file) = $self->splitpath($path);
my ($base_volume, $base_directories, $base_file) = $self->splitpath($base);
return $path unless lc($path_volume) eq lc($base_volume);
for ($path, $base) { $_ = $self->rel2abs($_) }
# Now, remove all leading components that are the same
my @pathchunks = $self->splitdir( $path_directories );
unshift(@pathchunks,'000000') unless $pathchunks[0] eq '000000';
my @basechunks = $self->splitdir( $base_directories );
unshift(@basechunks,'000000') unless $basechunks[0] eq '000000';
while ( @pathchunks &&
@basechunks &&
lc( $pathchunks[0] ) eq lc( $basechunks[0] )
) {
shift @pathchunks ;
shift @basechunks ;
}
# @basechunks now contains the directories to climb out of,
# @pathchunks now has the directories to descend in to.
$path_directories = join '.', ('-' x @basechunks, @pathchunks) ;
return $self->canonpath( $self->catpath( '', $path_directories, $path_file ) ) ;
}
=item rel2abs (override)
Use VMS syntax when converting filespecs.
=cut
sub rel2abs {
my $self = shift ;
my ($path,$base ) = @_;
return undef unless defined $path;
if ($path =~ m/\//) {
$path = ( -d $path || $path =~ m/\/\z/ # educated guessing about
? vmspath($path) # whether it's a directory
: vmsify($path) );
}
$base = vmspath($base) if defined $base && $base =~ m/\//;
# Clean up and split up $path
if ( ! $self->file_name_is_absolute( $path ) ) {
# Figure out the effective $base and clean it up.
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd;
}
elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
}
else {
$base = $self->canonpath( $base ) ;
}
# Split up paths
my ( $path_directories, $path_file ) =
($self->splitpath( $path ))[1,2] ;
my ( $base_volume, $base_directories ) =
$self->splitpath( $base ) ;
$path_directories = '' if $path_directories eq '[]' ||
$path_directories eq '<>';
my $sep = '' ;
$sep = '.'
if ( $base_directories =~ m{[^.\]>]\Z(?!\n)} &&
$path_directories =~ m{^[^.\[<]}s
) ;
$base_directories = "$base_directories$sep$path_directories";
$base_directories =~ s{\.?[\]>][\[<]\.?}{.};
$path = $self->catpath( $base_volume, $base_directories, $path_file );
}
return $self->canonpath( $path ) ;
}
# eliminate_macros() and fixpath() are MakeMaker-specific methods
# which are used inside catfile() and catdir(). MakeMaker has its own
# copies as of 6.06_03 which are the canonical ones. We leave these
# here, in peace, so that File::Spec continues to work with MakeMakers
# prior to 6.06_03.
#
# Please consider these two methods deprecated. Do not patch them,
# patch the ones in ExtUtils::MM_VMS instead.
sub eliminate_macros {
my($self,$path) = @_;
return '' unless $path;
$self = {} unless ref $self;
if ($path =~ /\s/) {
return join ' ', map { $self->eliminate_macros($_) } split /\s+/, $path;
}
my($npath) = unixify($path);
my($complex) = 0;
my($head,$macro,$tail);
# perform m##g in scalar context so it acts as an iterator
while ($npath =~ m#(.*?)\$\((\S+?)\)(.*)#gs) {
if ($self->{$2}) {
($head,$macro,$tail) = ($1,$2,$3);
if (ref $self->{$macro}) {
if (ref $self->{$macro} eq 'ARRAY') {
$macro = join ' ', @{$self->{$macro}};
}
else {
print "Note: can't expand macro \$($macro) containing ",ref($self->{$macro}),
"\n\t(using MMK-specific deferred substitutuon; MMS will break)\n";
$macro = "\cB$macro\cB";
$complex = 1;
}
}
else { ($macro = unixify($self->{$macro})) =~ s#/\Z(?!\n)##; }
$npath = "$head$macro$tail";
}
}
if ($complex) { $npath =~ s#\cB(.*?)\cB#\${$1}#gs; }
$npath;
}
# Deprecated. See the note above for eliminate_macros().
sub fixpath {
my($self,$path,$force_path) = @_;
return '' unless $path;
$self = bless {} unless ref $self;
my($fixedpath,$prefix,$name);
if ($path =~ /\s/) {
return join ' ',
map { $self->fixpath($_,$force_path) }
split /\s+/, $path;
}
if ($path =~ m#^\$\([^\)]+\)\Z(?!\n)#s || $path =~ m#[/:>\]]#) {
if ($force_path or $path =~ /(?:DIR\)|\])\Z(?!\n)/) {
$fixedpath = vmspath($self->eliminate_macros($path));
}
else {
$fixedpath = vmsify($self->eliminate_macros($path));
}
}
elsif ((($prefix,$name) = ($path =~ m#^\$\(([^\)]+)\)(.+)#s)) && $self->{$prefix}) {
my($vmspre) = $self->eliminate_macros("\$($prefix)");
# is it a dir or just a name?
$vmspre = ($vmspre =~ m|/| or $prefix =~ /DIR\Z(?!\n)/) ? vmspath($vmspre) : '';
$fixedpath = ($vmspre ? $vmspre : $self->{$prefix}) . $name;
$fixedpath = vmspath($fixedpath) if $force_path;
}
else {
$fixedpath = $path;
$fixedpath = vmspath($fixedpath) if $force_path;
}
# No hints, so we try to guess
if (!defined($force_path) and $fixedpath !~ /[:>(.\]]/) {
$fixedpath = vmspath($fixedpath) if -d $fixedpath;
}
# Trim off root dirname if it's had other dirs inserted in front of it.
$fixedpath =~ s/\.000000([\]>])/$1/;
# Special case for VMS absolute directory specs: these will have had device
# prepended during trip through Unix syntax in eliminate_macros(), since
# Unix syntax has no way to express "absolute from the top of this device's
# directory tree".
if ($path =~ /^[\[>][^.\-]/) { $fixedpath =~ s/^[^\[<]+//; }
$fixedpath;
}
=back
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
implementation of these methods, not the semantics.
An explanation of VMS file specs can be found at
L<"http://h71000.www7.hp.com/doc/731FINAL/4506/4506pro_014.html#apps_locating_naming_files">.
=cut
1;
--- NEW FILE: Functions.pm ---
package File::Spec::Functions;
use File::Spec;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $VERSION);
$VERSION = '1.3';
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(
canonpath
catdir
catfile
curdir
rootdir
updir
no_upwards
file_name_is_absolute
path
);
@EXPORT_OK = qw(
devnull
tmpdir
splitpath
splitdir
catpath
abs2rel
rel2abs
case_tolerant
);
%EXPORT_TAGS = ( ALL => [ @EXPORT_OK, @EXPORT ] );
foreach my $meth (@EXPORT, @EXPORT_OK) {
my $sub = File::Spec->can($meth);
no strict 'refs';
*{$meth} = sub {&$sub('File::Spec', @_)};
}
1;
__END__
=head1 NAME
File::Spec::Functions - portably perform operations on file names
=head1 SYNOPSIS
use File::Spec::Functions;
$x = catfile('a','b');
=head1 DESCRIPTION
This module exports convenience functions for all of the class methods
provided by File::Spec.
For a reference of available functions, please consult L<File::Spec::Unix>,
which contains the entire set, and which is inherited by the modules for
other platforms. For further information, please see L<File::Spec::Mac>,
L<File::Spec::OS2>, L<File::Spec::Win32>, or L<File::Spec::VMS>.
=head2 Exports
The following functions are exported by default.
canonpath
catdir
catfile
curdir
rootdir
updir
no_upwards
file_name_is_absolute
path
The following functions are exported only by request.
devnull
tmpdir
splitpath
splitdir
catpath
abs2rel
rel2abs
case_tolerant
All the functions may be imported using the C<:ALL> tag.
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
File::Spec, File::Spec::Unix, File::Spec::Mac, File::Spec::OS2,
File::Spec::Win32, File::Spec::VMS, ExtUtils::MakeMaker
=cut
--- NEW FILE: Cygwin.pm ---
package File::Spec::Cygwin;
use strict;
use vars qw(@ISA $VERSION);
require File::Spec::Unix;
$VERSION = '1.1';
@ISA = qw(File::Spec::Unix);
=head1 NAME
File::Spec::Cygwin - methods for Cygwin file specs
=head1 SYNOPSIS
require File::Spec::Cygwin; # Done internally by File::Spec if needed
=head1 DESCRIPTION
See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
implementation of these methods, not the semantics.
This module is still in beta. Cygwin-knowledgeable folks are invited
to offer patches and suggestions.
=cut
=pod
=over 4
=item canonpath
Any C<\> (backslashes) are converted to C</> (forward slashes),
and then File::Spec::Unix canonpath() is called on the result.
=cut
sub canonpath {
my($self,$path) = @_;
$path =~ s|\\|/|g;
return $self->SUPER::canonpath($path);
}
=pod
=item file_name_is_absolute
True is returned if the file name begins with C<drive_letter:>,
and if not, File::Spec::Unix file_name_is_absolute() is called.
=cut
sub file_name_is_absolute {
my ($self,$file) = @_;
return 1 if $file =~ m{^([a-z]:)?[\\/]}is; # C:/test
return $self->SUPER::file_name_is_absolute($file);
}
=item tmpdir (override)
Returns a string representation of the first existing directory
from the following list:
$ENV{TMPDIR}
/tmp
C:/temp
Since Perl 5.8.0, if running under taint mode, and if the environment
variables are tainted, they are not used.
=cut
my $tmpdir;
sub tmpdir {
return $tmpdir if defined $tmpdir;
$tmpdir = $_[0]->_tmpdir( $ENV{TMPDIR}, "/tmp", 'C:/temp' );
}
=back
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
1;
--- NEW FILE: OS2.pm ---
package File::Spec::OS2;
use strict;
use vars qw(@ISA $VERSION);
require File::Spec::Unix;
$VERSION = '1.2';
@ISA = qw(File::Spec::Unix);
sub devnull {
return "/dev/nul";
}
sub case_tolerant {
return 1;
}
sub file_name_is_absolute {
my ($self,$file) = @_;
return scalar($file =~ m{^([a-z]:)?[\\/]}is);
}
sub path {
my $path = $ENV{PATH};
$path =~ s:\\:/:g;
my @path = split(';',$path);
foreach (@path) { $_ = '.' if $_ eq '' }
return @path;
}
sub _cwd {
# In OS/2 the "require Cwd" is unnecessary bloat.
return Cwd::sys_cwd();
}
my $tmpdir;
sub tmpdir {
return $tmpdir if defined $tmpdir;
$tmpdir = $_[0]->_tmpdir( @ENV{qw(TMPDIR TEMP TMP)},
'/tmp',
'/' );
}
sub catdir {
my $self = shift;
my @args = @_;
foreach (@args) {
tr[\\][/];
# append a backslash to each argument unless it has one there
$_ .= "/" unless m{/$};
}
return $self->canonpath(join('', @args));
}
sub canonpath {
my ($self,$path) = @_;
$path =~ s/^([a-z]:)/\l$1/s;
$path =~ s|\\|/|g;
$path =~ s|([^/])/+|$1/|g; # xx////xx -> xx/xx
$path =~ s|(/\.)+/|/|g; # xx/././xx -> xx/xx
$path =~ s|^(\./)+(?=[^/])||s; # ./xx -> xx
$path =~ s|/\Z(?!\n)||
unless $path =~ m#^([a-z]:)?/\Z(?!\n)#si;# xx/ -> xx
$path =~ s{^/\.\.$}{/}; # /.. -> /
1 while $path =~ s{^/\.\.}{}; # /../xx -> /xx
return $path;
}
sub splitpath {
my ($self,$path, $nofile) = @_;
my ($volume,$directory,$file) = ('','','');
if ( $nofile ) {
$path =~
m{^( (?:[a-zA-Z]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? )
(.*)
}xs;
$volume = $1;
$directory = $2;
}
else {
$path =~
m{^ ( (?: [a-zA-Z]: |
(?:\\\\|//)[^\\/]+[\\/][^\\/]+
)?
)
( (?:.*[\\\\/](?:\.\.?\Z(?!\n))?)? )
(.*)
}xs;
$volume = $1;
$directory = $2;
$file = $3;
}
return ($volume,$directory,$file);
}
sub splitdir {
my ($self,$directories) = @_ ;
split m|[\\/]|, $directories, -1;
}
sub catpath {
my ($self,$volume,$directory,$file) = @_;
# If it's UNC, make sure the glue separator is there, reusing
# whatever separator is first in the $volume
$volume .= $1
if ( $volume =~ m@^([\\/])[\\/][^\\/]+[\\/][^\\/]+\Z(?!\n)@s &&
$directory =~ m@^[^\\/]@s
) ;
$volume .= $directory ;
# If the volume is not just A:, make sure the glue separator is
# there, reusing whatever separator is first in the $volume if possible.
if ( $volume !~ m@^[a-zA-Z]:\Z(?!\n)@s &&
$volume =~ m@[^\\/]\Z(?!\n)@ &&
$file =~ m@[^\\/]@
) {
$volume =~ m@([\\/])@ ;
my $sep = $1 ? $1 : '/' ;
$volume .= $sep ;
}
$volume .= $file ;
return $volume ;
}
sub abs2rel {
my($self,$path,$base) = @_;
# Clean up $path
if ( ! $self->file_name_is_absolute( $path ) ) {
$path = $self->rel2abs( $path ) ;
} else {
$path = $self->canonpath( $path ) ;
}
# Figure out the effective $base and clean it up.
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd();
} elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
} else {
$base = $self->canonpath( $base ) ;
}
# Split up paths
my ( $path_volume, $path_directories, $path_file ) = $self->splitpath( $path, 1 ) ;
my ( $base_volume, $base_directories ) = $self->splitpath( $base, 1 ) ;
return $path unless $path_volume eq $base_volume;
# Now, remove all leading components that are the same
my @pathchunks = $self->splitdir( $path_directories );
my @basechunks = $self->splitdir( $base_directories );
while ( @pathchunks &&
@basechunks &&
lc( $pathchunks[0] ) eq lc( $basechunks[0] )
) {
shift @pathchunks ;
shift @basechunks ;
}
# No need to catdir, we know these are well formed.
$path_directories = CORE::join( '/', @pathchunks );
$base_directories = CORE::join( '/', @basechunks );
# $base_directories now contains the directories the resulting relative
# path must ascend out of before it can descend to $path_directory. So,
# replace all names with $parentDir
#FA Need to replace between backslashes...
$base_directories =~ s|[^\\/]+|..|g ;
# Glue the two together, using a separator if necessary, and preventing an
# empty result.
#FA Must check that new directories are not empty.
if ( $path_directories ne '' && $base_directories ne '' ) {
$path_directories = "$base_directories/$path_directories" ;
} else {
$path_directories = "$base_directories$path_directories" ;
}
return $self->canonpath(
$self->catpath( "", $path_directories, $path_file )
) ;
}
sub rel2abs {
my ($self,$path,$base ) = @_;
if ( ! $self->file_name_is_absolute( $path ) ) {
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd();
}
elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
}
else {
$base = $self->canonpath( $base ) ;
}
my ( $path_directories, $path_file ) =
($self->splitpath( $path, 1 ))[1,2] ;
my ( $base_volume, $base_directories ) =
$self->splitpath( $base, 1 ) ;
$path = $self->catpath(
$base_volume,
$self->catdir( $base_directories, $path_directories ),
$path_file
) ;
}
return $self->canonpath( $path ) ;
}
1;
__END__
=head1 NAME
File::Spec::OS2 - methods for OS/2 file specs
=head1 SYNOPSIS
require File::Spec::OS2; # Done internally by File::Spec if needed
=head1 DESCRIPTION
See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
implementation of these methods, not the semantics.
Amongst the changes made for OS/2 are...
=over 4
=item tmpdir
Modifies the list of places temp directory information is looked for.
$ENV{TMPDIR}
$ENV{TEMP}
$ENV{TMP}
/tmp
/
=item splitpath
Volumes can be drive letters or UNC sharenames (\\server\share).
=back
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
--- NEW FILE: Mac.pm ---
package File::Spec::Mac;
use strict;
use vars qw(@ISA $VERSION);
require File::Spec::Unix;
$VERSION = '1.4';
@ISA = qw(File::Spec::Unix);
my $macfiles;
if ($^O eq 'MacOS') {
$macfiles = eval { require Mac::Files };
}
sub case_tolerant { 1 }
=head1 NAME
File::Spec::Mac - File::Spec for Mac OS (Classic)
=head1 SYNOPSIS
require File::Spec::Mac; # Done internally by File::Spec if needed
=head1 DESCRIPTION
Methods for manipulating file specifications.
=head1 METHODS
=over 2
=item canonpath
On Mac OS, there's nothing to be done. Returns what it's given.
=cut
sub canonpath {
my ($self,$path) = @_;
return $path;
}
=item catdir()
Concatenate two or more directory names to form a path separated by colons
(":") ending with a directory. Resulting paths are B<relative> by default,
but can be forced to be absolute (but avoid this, see below). Automatically
puts a trailing ":" on the end of the complete path, because that's what's
done in MacPerl's environment and helps to distinguish a file path from a
directory path.
B<IMPORTANT NOTE:> Beginning with version 1.3 of this module, the resulting
path is relative by default and I<not> absolute. This decision was made due
to portability reasons. Since C<File::Spec-E<gt>catdir()> returns relative paths
on all other operating systems, it will now also follow this convention on Mac
OS. Note that this may break some existing scripts.
The intended purpose of this routine is to concatenate I<directory names>.
But because of the nature of Macintosh paths, some additional possibilities
are allowed to make using this routine give reasonable results for some
common situations. In other words, you are also allowed to concatenate
I<paths> instead of directory names (strictly speaking, a string like ":a"
is a path, but not a name, since it contains a punctuation character ":").
So, beside calls like
catdir("a") = ":a:"
catdir("a","b") = ":a:b:"
catdir() = "" (special case)
calls like the following
catdir(":a:") = ":a:"
catdir(":a","b") = ":a:b:"
catdir(":a:","b") = ":a:b:"
catdir(":a:",":b:") = ":a:b:"
catdir(":") = ":"
are allowed.
Here are the rules that are used in C<catdir()>; note that we try to be as
compatible as possible to Unix:
=over 2
=item 1.
The resulting path is relative by default, i.e. the resulting path will have a
leading colon.
=item 2.
A trailing colon is added automatically to the resulting path, to denote a
directory.
=item 3.
Generally, each argument has one leading ":" and one trailing ":"
removed (if any). They are then joined together by a ":". Special
treatment applies for arguments denoting updir paths like "::lib:",
see (4), or arguments consisting solely of colons ("colon paths"),
see (5).
=item 4.
When an updir path like ":::lib::" is passed as argument, the number
of directories to climb up is handled correctly, not removing leading
or trailing colons when necessary. E.g.
catdir(":::a","::b","c") = ":::a::b:c:"
catdir(":::a::","::b","c") = ":::a:::b:c:"
=item 5.
Adding a colon ":" or empty string "" to a path at I<any> position
doesn't alter the path, i.e. these arguments are ignored. (When a ""
is passed as the first argument, it has a special meaning, see
(6)). This way, a colon ":" is handled like a "." (curdir) on Unix,
while an empty string "" is generally ignored (see
C<Unix-E<gt>canonpath()> ). Likewise, a "::" is handled like a ".."
(updir), and a ":::" is handled like a "../.." etc. E.g.
catdir("a",":",":","b") = ":a:b:"
catdir("a",":","::",":b") = ":a::b:"
=item 6.
If the first argument is an empty string "" or is a volume name, i.e. matches
the pattern /^[^:]+:/, the resulting path is B<absolute>.
=item 7.
Passing an empty string "" as the first argument to C<catdir()> is
like passingC<File::Spec-E<gt>rootdir()> as the first argument, i.e.
catdir("","a","b") is the same as
catdir(rootdir(),"a","b").
This is true on Unix, where C<catdir("","a","b")> yields "/a/b" and
C<rootdir()> is "/". Note that C<rootdir()> on Mac OS is the startup
volume, which is the closest in concept to Unix' "/". This should help
to run existing scripts originally written for Unix.
=item 8.
For absolute paths, some cleanup is done, to ensure that the volume
name isn't immediately followed by updirs. This is invalid, because
this would go beyond "root". Generally, these cases are handled like
their Unix counterparts:
Unix:
Unix->catdir("","") = "/"
Unix->catdir("",".") = "/"
Unix->catdir("","..") = "/" # can't go beyond root
Unix->catdir("",".","..","..","a") = "/a"
Mac:
Mac->catdir("","") = rootdir() # (e.g. "HD:")
Mac->catdir("",":") = rootdir()
Mac->catdir("","::") = rootdir() # can't go beyond root
Mac->catdir("",":","::","::","a") = rootdir() . "a:" # (e.g. "HD:a:")
However, this approach is limited to the first arguments following
"root" (again, see C<Unix-E<gt>canonpath()> ). If there are more
arguments that move up the directory tree, an invalid path going
beyond root can be created.
=back
As you've seen, you can force C<catdir()> to create an absolute path
by passing either an empty string or a path that begins with a volume
name as the first argument. However, you are strongly encouraged not
to do so, since this is done only for backward compatibility. Newer
versions of File::Spec come with a method called C<catpath()> (see
below), that is designed to offer a portable solution for the creation
of absolute paths. It takes volume, directory and file portions and
returns an entire path. While C<catdir()> is still suitable for the
concatenation of I<directory names>, you are encouraged to use
C<catpath()> to concatenate I<volume names> and I<directory
paths>. E.g.
$dir = File::Spec->catdir("tmp","sources");
$abs_path = File::Spec->catpath("MacintoshHD:", $dir,"");
yields
"MacintoshHD:tmp:sources:" .
=cut
sub catdir {
my $self = shift;
return '' unless @_;
my @args = @_;
my $first_arg;
my $relative;
# take care of the first argument
if ($args[0] eq '') { # absolute path, rootdir
shift @args;
$relative = 0;
$first_arg = $self->rootdir;
} elsif ($args[0] =~ /^[^:]+:/) { # absolute path, volume name
$relative = 0;
$first_arg = shift @args;
# add a trailing ':' if need be (may be it's a path like HD:dir)
$first_arg = "$first_arg:" unless ($first_arg =~ /:\Z(?!\n)/);
} else { # relative path
$relative = 1;
if ( $args[0] =~ /^::+\Z(?!\n)/ ) {
# updir colon path ('::', ':::' etc.), don't shift
$first_arg = ':';
} elsif ($args[0] eq ':') {
$first_arg = shift @args;
} else {
# add a trailing ':' if need be
$first_arg = shift @args;
$first_arg = "$first_arg:" unless ($first_arg =~ /:\Z(?!\n)/);
}
}
# For all other arguments,
# (a) ignore arguments that equal ':' or '',
# (b) handle updir paths specially:
# '::' -> concatenate '::'
# '::' . '::' -> concatenate ':::' etc.
# (c) add a trailing ':' if need be
my $result = $first_arg;
while (@args) {
my $arg = shift @args;
unless (($arg eq '') || ($arg eq ':')) {
if ($arg =~ /^::+\Z(?!\n)/ ) { # updir colon path like ':::'
my $updir_count = length($arg) - 1;
while ((@args) && ($args[0] =~ /^::+\Z(?!\n)/) ) { # while updir colon path
$arg = shift @args;
$updir_count += (length($arg) - 1);
}
$arg = (':' x $updir_count);
} else {
$arg =~ s/^://s; # remove a leading ':' if any
$arg = "$arg:" unless ($arg =~ /:\Z(?!\n)/); # ensure trailing ':'
}
$result .= $arg;
}#unless
}
if ( ($relative) && ($result !~ /^:/) ) {
# add a leading colon if need be
$result = ":$result";
}
unless ($relative) {
# remove updirs immediately following the volume name
$result =~ s/([^:]+:)(:*)(.*)\Z(?!\n)/$1$3/;
}
return $result;
}
=item catfile
Concatenate one or more directory names and a filename to form a
complete path ending with a filename. Resulting paths are B<relative>
by default, but can be forced to be absolute (but avoid this).
B<IMPORTANT NOTE:> Beginning with version 1.3 of this module, the
resulting path is relative by default and I<not> absolute. This
decision was made due to portability reasons. Since
C<File::Spec-E<gt>catfile()> returns relative paths on all other
operating systems, it will now also follow this convention on Mac OS.
Note that this may break some existing scripts.
The last argument is always considered to be the file portion. Since
C<catfile()> uses C<catdir()> (see above) for the concatenation of the
directory portions (if any), the following with regard to relative and
absolute paths is true:
catfile("") = ""
catfile("file") = "file"
but
catfile("","") = rootdir() # (e.g. "HD:")
catfile("","file") = rootdir() . file # (e.g. "HD:file")
catfile("HD:","file") = "HD:file"
This means that C<catdir()> is called only when there are two or more
arguments, as one might expect.
Note that the leading ":" is removed from the filename, so that
catfile("a","b","file") = ":a:b:file" and
catfile("a","b",":file") = ":a:b:file"
give the same answer.
To concatenate I<volume names>, I<directory paths> and I<filenames>,
you are encouraged to use C<catpath()> (see below).
=cut
sub catfile {
my $self = shift;
return '' unless @_;
my $file = pop @_;
return $file unless @_;
my $dir = $self->catdir(@_);
$file =~ s/^://s;
return $dir.$file;
}
=item curdir
Returns a string representing the current directory. On Mac OS, this is ":".
=cut
sub curdir {
return ":";
}
=item devnull
Returns a string representing the null device. On Mac OS, this is "Dev:Null".
=cut
sub devnull {
return "Dev:Null";
}
=item rootdir
Returns a string representing the root directory. Under MacPerl,
returns the name of the startup volume, since that's the closest in
concept, although other volumes aren't rooted there. The name has a
trailing ":", because that's the correct specification for a volume
name on Mac OS.
If Mac::Files could not be loaded, the empty string is returned.
=cut
sub rootdir {
#
# There's no real root directory on Mac OS. The name of the startup
# volume is returned, since that's the closest in concept.
#
return '' unless $macfiles;
my $system = Mac::Files::FindFolder(&Mac::Files::kOnSystemDisk,
&Mac::Files::kSystemFolderType);
$system =~ s/:.*\Z(?!\n)/:/s;
return $system;
}
=item tmpdir
Returns the contents of $ENV{TMPDIR}, if that directory exits or the
current working directory otherwise. Under MacPerl, $ENV{TMPDIR} will
contain a path like "MacintoshHD:Temporary Items:", which is a hidden
directory on your startup volume.
=cut
my $tmpdir;
sub tmpdir {
return $tmpdir if defined $tmpdir;
$tmpdir = $_[0]->_tmpdir( $ENV{TMPDIR} );
}
=item updir
Returns a string representing the parent directory. On Mac OS, this is "::".
=cut
sub updir {
return "::";
}
=item file_name_is_absolute
Takes as argument a path and returns true, if it is an absolute path.
If the path has a leading ":", it's a relative path. Otherwise, it's an
absolute path, unless the path doesn't contain any colons, i.e. it's a name
like "a". In this particular case, the path is considered to be relative
(i.e. it is considered to be a filename). Use ":" in the appropriate place
in the path if you want to distinguish unambiguously. As a special case,
the filename '' is always considered to be absolute. Note that with version
1.2 of File::Spec::Mac, this does no longer consult the local filesystem.
E.g.
File::Spec->file_name_is_absolute("a"); # false (relative)
File::Spec->file_name_is_absolute(":a:b:"); # false (relative)
File::Spec->file_name_is_absolute("MacintoshHD:"); # true (absolute)
File::Spec->file_name_is_absolute(""); # true (absolute)
=cut
sub file_name_is_absolute {
my ($self,$file) = @_;
if ($file =~ /:/) {
return (! ($file =~ m/^:/s) );
} elsif ( $file eq '' ) {
return 1 ;
} else {
return 0; # i.e. a file like "a"
}
}
=item path
Returns the null list for the MacPerl application, since the concept is
usually meaningless under Mac OS. But if you're using the MacPerl tool under
MPW, it gives back $ENV{Commands} suitably split, as is done in
:lib:ExtUtils:MM_Mac.pm.
=cut
sub path {
#
# The concept is meaningless under the MacPerl application.
# Under MPW, it has a meaning.
#
return unless exists $ENV{Commands};
return split(/,/, $ENV{Commands});
}
=item splitpath
($volume,$directories,$file) = File::Spec->splitpath( $path );
($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
Splits a path into volume, directory, and filename portions.
On Mac OS, assumes that the last part of the path is a filename unless
$no_file is true or a trailing separator ":" is present.
The volume portion is always returned with a trailing ":". The directory portion
is always returned with a leading (to denote a relative path) and a trailing ":"
(to denote a directory). The file portion is always returned I<without> a leading ":".
Empty portions are returned as empty string ''.
The results can be passed to C<catpath()> to get back a path equivalent to
(usually identical to) the original path.
=cut
sub splitpath {
my ($self,$path, $nofile) = @_;
my ($volume,$directory,$file);
if ( $nofile ) {
( $volume, $directory ) = $path =~ m|^((?:[^:]+:)?)(.*)|s;
}
else {
$path =~
m|^( (?: [^:]+: )? )
( (?: .*: )? )
( .* )
|xs;
$volume = $1;
$directory = $2;
$file = $3;
}
$volume = '' unless defined($volume);
$directory = ":$directory" if ( $volume && $directory ); # take care of "HD::dir"
if ($directory) {
# Make sure non-empty directories begin and end in ':'
$directory .= ':' unless (substr($directory,-1) eq ':');
$directory = ":$directory" unless (substr($directory,0,1) eq ':');
} else {
$directory = '';
}
$file = '' unless defined($file);
return ($volume,$directory,$file);
}
=item splitdir
The opposite of C<catdir()>.
@dirs = File::Spec->splitdir( $directories );
$directories should be only the directory portion of the path on systems
that have the concept of a volume or that have path syntax that differentiates
files from directories. Consider using C<splitpath()> otherwise.
Unlike just splitting the directories on the separator, empty directory names
(C<"">) can be returned. Since C<catdir()> on Mac OS always appends a trailing
colon to distinguish a directory path from a file path, a single trailing colon
will be ignored, i.e. there's no empty directory name after it.
Hence, on Mac OS, both
File::Spec->splitdir( ":a:b::c:" ); and
File::Spec->splitdir( ":a:b::c" );
yield:
( "a", "b", "::", "c")
while
File::Spec->splitdir( ":a:b::c::" );
yields:
( "a", "b", "::", "c", "::")
=cut
sub splitdir {
my ($self, $path) = @_;
my @result = ();
my ($head, $sep, $tail, $volume, $directories);
return ('') if ( (!defined($path)) || ($path eq '') );
return (':') if ($path eq ':');
( $volume, $sep, $directories ) = $path =~ m|^((?:[^:]+:)?)(:*)(.*)|s;
# deprecated, but handle it correctly
if ($volume) {
push (@result, $volume);
$sep .= ':';
}
while ($sep || $directories) {
if (length($sep) > 1) {
my $updir_count = length($sep) - 1;
for (my $i=0; $i<$updir_count; $i++) {
# push '::' updir_count times;
# simulate Unix '..' updirs
push (@result, '::');
}
}
$sep = '';
if ($directories) {
( $head, $sep, $tail ) = $directories =~ m|^((?:[^:]+)?)(:*)(.*)|s;
push (@result, $head);
$directories = $tail;
}
}
return @result;
}
=item catpath
$path = File::Spec->catpath($volume,$directory,$file);
Takes volume, directory and file portions and returns an entire path. On Mac OS,
$volume, $directory and $file are concatenated. A ':' is inserted if need be. You
may pass an empty string for each portion. If all portions are empty, the empty
string is returned. If $volume is empty, the result will be a relative path,
beginning with a ':'. If $volume and $directory are empty, a leading ":" (if any)
is removed form $file and the remainder is returned. If $file is empty, the
resulting path will have a trailing ':'.
=cut
sub catpath {
my ($self,$volume,$directory,$file) = @_;
if ( (! $volume) && (! $directory) ) {
$file =~ s/^:// if $file;
return $file ;
}
# We look for a volume in $volume, then in $directory, but not both
my ($dir_volume, $dir_dirs) = $self->splitpath($directory, 1);
$volume = $dir_volume unless length $volume;
my $path = $volume; # may be ''
$path .= ':' unless (substr($path, -1) eq ':'); # ensure trailing ':'
if ($directory) {
$directory = $dir_dirs if $volume;
$directory =~ s/^://; # remove leading ':' if any
$path .= $directory;
$path .= ':' unless (substr($path, -1) eq ':'); # ensure trailing ':'
}
if ($file) {
$file =~ s/^://; # remove leading ':' if any
$path .= $file;
}
return $path;
}
=item abs2rel
Takes a destination path and an optional base path and returns a relative path
from the base path to the destination path:
$rel_path = File::Spec->abs2rel( $path ) ;
$rel_path = File::Spec->abs2rel( $path, $base ) ;
Note that both paths are assumed to have a notation that distinguishes a
directory path (with trailing ':') from a file path (without trailing ':').
If $base is not present or '', then the current working directory is used.
If $base is relative, then it is converted to absolute form using C<rel2abs()>.
This means that it is taken to be relative to the current working directory.
If $path and $base appear to be on two different volumes, we will not
attempt to resolve the two paths, and we will instead simply return
$path. Note that previous versions of this module ignored the volume
of $base, which resulted in garbage results part of the time.
If $base doesn't have a trailing colon, the last element of $base is
assumed to be a filename. This filename is ignored. Otherwise all path
components are assumed to be directories.
If $path is relative, it is converted to absolute form using C<rel2abs()>.
This means that it is taken to be relative to the current working directory.
Based on code written by Shigio Yamaguchi.
=cut
# maybe this should be done in canonpath() ?
sub _resolve_updirs {
my $path = shift @_;
my $proceed;
# resolve any updirs, e.g. "HD:tmp::file" -> "HD:file"
do {
$proceed = ($path =~ s/^(.*):[^:]+::(.*?)\z/$1:$2/);
} while ($proceed);
return $path;
}
sub abs2rel {
my($self,$path,$base) = @_;
# Clean up $path
if ( ! $self->file_name_is_absolute( $path ) ) {
$path = $self->rel2abs( $path ) ;
}
# Figure out the effective $base and clean it up.
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd();
}
elsif ( ! $self->file_name_is_absolute( $base ) ) {
$base = $self->rel2abs( $base ) ;
$base = _resolve_updirs( $base ); # resolve updirs in $base
}
else {
$base = _resolve_updirs( $base );
}
# Split up paths - ignore $base's file
my ( $path_vol, $path_dirs, $path_file ) = $self->splitpath( $path );
my ( $base_vol, $base_dirs ) = $self->splitpath( $base );
return $path unless lc( $path_vol ) eq lc( $base_vol );
# Now, remove all leading components that are the same
my @pathchunks = $self->splitdir( $path_dirs );
my @basechunks = $self->splitdir( $base_dirs );
while ( @pathchunks &&
@basechunks &&
lc( $pathchunks[0] ) eq lc( $basechunks[0] ) ) {
shift @pathchunks ;
shift @basechunks ;
}
# @pathchunks now has the directories to descend in to.
# ensure relative path, even if @pathchunks is empty
$path_dirs = $self->catdir( ':', @pathchunks );
# @basechunks now contains the number of directories to climb out of.
$base_dirs = (':' x @basechunks) . ':' ;
return $self->catpath( '', $self->catdir( $base_dirs, $path_dirs ), $path_file ) ;
}
=item rel2abs
Converts a relative path to an absolute path:
$abs_path = File::Spec->rel2abs( $path ) ;
$abs_path = File::Spec->rel2abs( $path, $base ) ;
Note that both paths are assumed to have a notation that distinguishes a
directory path (with trailing ':') from a file path (without trailing ':').
If $base is not present or '', then $base is set to the current working
directory. If $base is relative, then it is converted to absolute form
using C<rel2abs()>. This means that it is taken to be relative to the
current working directory.
If $base doesn't have a trailing colon, the last element of $base is
assumed to be a filename. This filename is ignored. Otherwise all path
components are assumed to be directories.
If $path is already absolute, it is returned and $base is ignored.
Based on code written by Shigio Yamaguchi.
=cut
sub rel2abs {
my ($self,$path,$base) = @_;
if ( ! $self->file_name_is_absolute($path) ) {
# Figure out the effective $base and clean it up.
if ( !defined( $base ) || $base eq '' ) {
$base = $self->_cwd();
}
elsif ( ! $self->file_name_is_absolute($base) ) {
$base = $self->rel2abs($base) ;
}
# Split up paths
# igonore $path's volume
my ( $path_dirs, $path_file ) = ($self->splitpath($path))[1,2] ;
# ignore $base's file part
my ( $base_vol, $base_dirs ) = $self->splitpath($base) ;
# Glom them together
$path_dirs = ':' if ($path_dirs eq '');
$base_dirs =~ s/:$//; # remove trailing ':', if any
$base_dirs = $base_dirs . $path_dirs;
$path = $self->catpath( $base_vol, $base_dirs, $path_file );
}
return $path;
}
=back
=head1 AUTHORS
See the authors list in I<File::Spec>. Mac OS support by Paul Schinder
<schinder at pobox.com> and Thomas Wegner <wegner_thomas at yahoo.com>.
=head1 COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
See L<File::Spec> and L<File::Spec::Unix>. This package overrides the
implementation of these methods, not the semantics.
=cut
1;
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