Epoc.pm revision 7c478bd95313f5f23a4c958a745db2134aa03244
use strict;
use Cwd;
use vars qw(@ISA);
=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 ;-)
o.flebbe@gmx.de
=over
=item devnull
Returns a string representation of the null device.
=cut
sub devnull {
return "nul:";
}
=item tmpdir
Returns a string representation of a temporay directory:
=cut
my $tmpdir;
sub tmpdir {
}
sub case_tolerant {
return 1;
}
sub file_name_is_absolute {
}
=item path
Takes no argument, returns the environment variable PATH as an array. Since
there is no search path supported, it returns undef, sorry.
=cut
sub path {
return undef;
}
=item canonpath
No physical check on the filesystem, but a logical cleanup of a
path. On UNIX eliminated successive slashes and successive "/.".
=cut
sub canonpath {
$path =~ s/^([a-z]:)/\u$1/s;
$path =~ s|^/(\.\./)+|/|s; # /../../xx -> xx
return $path;
}
=item splitpath
($volume,$directories,$file) = File::Spec->splitpath( $path );
($volume,$directories,$file) = File::Spec->splitpath( $path, $no_file );
Splits a path in to 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, undef ).
Separators accepted are \ and /.
The results can be passed to L</catpath> to get back a path equivalent to
(usually identical to) the original path.
=cut
sub splitpath {
if ( $nofile ) {
$path =~
m{^( (?:[a-zA-Z?]:|(?:\\\\|//)[^\\/]+[\\/][^\\/]+)? )
(.*)
}xs;
$volume = $1;
$directory = $2;
}
else {
$path =~
m{^ ( (?: [a-zA-Z?]: |
(?:\\\\|//)[^\\/]+[\\/][^\\/]+
)?
)
( (?:.*[\\\\/](?:\.\.?\z)?)? )
(.*)
}xs;
$volume = $1;
$directory = $2;
$file = $3;
}
}
=item splitdir
The opposite of L</catdir()>.
@dirs = File::Spec->splitdir( $directories );
$directories must be only the directory portion of the path on systems
that have the concept of a volume or that have path syntax that differentiates
files from directories.
Unlike just splitting the directories on the separator, leading empty and
trailing directory entries can be returned, because these are significant
on some OSs. So,
File::Spec->splitdir( "/a/b/c" );
Yields:
( '', 'a', 'b', '', 'c', '' )
=cut
sub splitdir {
my ($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| ) {
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 {
# 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@s &&
$directory =~ m@^[^\\/]@s
) ;
# If the volume is not just A:, make sure the glue separator is
# there, reusing whatever separator is first in the $volume if possible.
$volume =~ m@[^\\/]\z@ &&
$file =~ m@[^\\/]@
) {
$volume =~ m@([\\/])@ ;
}
return $volume ;
}
=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( $destination ) ;
$rel_path = File::Spec->abs2rel( $destination, $base ) ;
If $base is not present or '', then L</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()>.
On systems with the concept of a volume, this assumes that both paths
are on the $destination volume, and ignores the $base volume.
On systems that have a grammar that indicates filenames, this ignores the
$base filename as well. 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()>.
Based on code written by Shigio Yamaguchi.
No checks against the filesystem are made.
=cut
sub abs2rel {
# Clean up $path
}
else {
}
# Figure out the effective $base and clean it up.
}
}
else {
}
# Split up paths
my ( undef, $base_directories, undef ) =
# Now, remove all leading components that are the same
while ( @pathchunks &&
@basechunks &&
) {
shift @pathchunks ;
shift @basechunks ;
}
# No need to catdir, we know these are well formed.
# $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.
$path_directories = "$base_directories\\$path_directories" ;
} else {
$path_directories = "$base_directories$path_directories" ;
}
# It makes no sense to add a relative path to a UNC volume
) ;
}
=item rel2abs
Converts a relative path to an absolute path.
$abs_path = File::Spec->rel2abs( $destination ) ;
$abs_path = File::Spec->rel2abs( $destination, $base ) ;
If $base is not present or '', then L<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()>.
Assumes that both paths are on the $base volume, and ignores the
$destination volume.
On systems that have a grammar that indicates filenames, this ignores the
$base filename as well. Otherwise all path components are assumed to be
directories.
If $path is absolute, it is cleaned up and returned using L</canonpath()>.
Based on code written by Shigio Yamaguchi.
No checks against the filesystem are made.
=cut
sub rel2abs($;$;) {
}
}
else {
}
my ( undef, $path_directories, $path_file ) =
my ( $base_volume, $base_directories, undef ) =
) ;
}
}
=back
=head1 SEE ALSO
L<File::Spec>
=cut
1;