Gecko [ www.blackthorn-inc.com ]

Name	Size	Permission	Date
App	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Archive	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
Attribute	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
B	[ DIR ]	drwxr-xr-x	2016-10-10 17:38
CGI	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
CPAN	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
Carp	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
Class	[ DIR ]	drwxr-xr-x	2015-02-14 16:56
Compress	[ DIR ]	drwxr-xr-x	2016-10-10 17:38
Config	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
DBM_Filter	[ DIR ]	drwxr-xr-x	2015-02-14 16:56
Data	[ DIR ]	drwxr-xr-x	2016-10-10 17:38
Devel	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Digest	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Encode	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Exporter	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
ExtUtils	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
File	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Filter	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Getopt	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
HTTP	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
Hash	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
I18N	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
IO	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
IPC	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
JSON	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
List	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Locale	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
MIME	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
Math	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Memoize	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Module	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Net	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Package	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Params	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Parse	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Perl	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
PerlIO	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
Pod	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Scalar	[ DIR ]	drwxr-xr-x	2016-10-10 17:39
Search	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Sys	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
TAP	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Term	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Test	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Text	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Thread	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
Tie	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
Time	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
Unicode	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
User	[ DIR ]	drwxr-xr-x	2015-02-14 16:56
XS	[ DIR ]	drwxr-xr-x	2016-10-10 17:41
auto	[ DIR ]	drwxr-xr-x	2016-10-10 18:16
autodie	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
encoding	[ DIR ]	drwxr-xr-x	2016-10-10 17:36
feature	[ DIR ]	drwxr-xr-x	2015-02-14 16:56
inc	[ DIR ]	drwxr-xr-x	2016-10-10 17:37
overload	[ DIR ]	drwxr-xr-x	2016-10-10 18:13
perl5db	[ DIR ]	drwxr-xr-x	2015-02-14 16:56
threads	[ DIR ]	drwxr-xr-x	2016-10-10 17:40
unicore	[ DIR ]	drwxr-xr-x	2016-10-10 18:53
version	[ DIR ]	drwxr-xr-x	2016-10-10 17:38
warnings	[ DIR ]	drwxr-xr-x	2015-02-14 16:56
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AnyDBM_File.pm	2.56 KB	-r--r--r--	2014-12-27 11:48
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AutoLoader.pm	15.43 KB	-r--r--r--	2014-12-27 11:48
AutoSplit.pm	19.18 KB	-r--r--r--	2014-12-27 11:48
B.pm	28.07 KB	-r--r--r--	2014-12-27 11:49
Benchmark.pm	29.22 KB	-r--r--r--	2014-12-27 11:49
Benchmark.t	21.04 KB	-r--r--r--	2014-12-27 11:48
CGI.pm	255.23 KB	-r--r--r--	2014-12-27 11:49
CORE.pod	3.19 KB	-r--r--r--	2014-12-27 11:48
CPAN.pm	134.45 KB	-r--r--r--	2014-12-27 11:48
Carp.pm	27.8 KB	-r--r--r--	2014-12-27 11:49
Config.pm	3.18 KB	-rw-r--r--	2016-10-10 17:36
Config.pod	229.34 KB	-rw-r--r--	2016-10-10 17:36
Config.t	8.26 KB	-r--r--r--	2014-12-27 11:48
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Config_heavy.pl	40.41 KB	-rw-r--r--	2016-10-10 17:36
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Digest.pm	10.35 KB	-r--r--r--	2014-12-27 11:48
DirHandle.pm	1.52 KB	-r--r--r--	2014-12-27 11:48
DirHandle.t	930 B	-r--r--r--	2014-12-27 11:48
Dumpvalue.pm	16.5 KB	-r--r--r--	2014-12-27 11:48
DynaLoader.pm	24.99 KB	-r--r--r--	2016-10-10 17:38
Encode.pm	32.44 KB	-r--r--r--	2014-12-27 11:49
English.pm	4.64 KB	-r--r--r--	2014-12-27 11:48
English.t	4.11 KB	-r--r--r--	2014-12-27 11:48
Env.pm	5.39 KB	-r--r--r--	2014-12-27 11:48
Errno.pm	6.33 KB	-r--r--r--	2016-10-10 17:36
Exporter.pm	18.31 KB	-r--r--r--	2014-12-27 11:49
Fatal.pm	59.38 KB	-r--r--r--	2014-12-27 11:49
Fcntl.pm	3.83 KB	-r--r--r--	2014-12-27 11:49
FileCache.pm	5.44 KB	-r--r--r--	2014-12-27 11:48
FileHandle.pm	6.62 KB	-r--r--r--	2014-12-27 11:48
FileHandle.t	2.48 KB	-r--r--r--	2014-12-27 11:48
FindBin.pm	4.45 KB	-r--r--r--	2014-12-27 11:48
FindBin.t	338 B	-r--r--r--	2014-12-27 11:48
GDBM_File.pm	1.51 KB	-r--r--r--	2014-12-27 11:48
IO.pm	1.36 KB	-r--r--r--	2014-12-27 11:49
Internals.t	5.04 KB	-r--r--r--	2014-12-27 11:48
Memoize.pm	35.28 KB	-r--r--r--	2014-12-27 11:48
NDBM_File.pm	2.44 KB	-r--r--r--	2014-12-27 11:49
NEXT.pm	18.05 KB	-r--r--r--	2014-12-27 11:48
O.pm	4.11 KB	-r--r--r--	2014-12-27 11:48
Opcode.pm	15.33 KB	-r--r--r--	2014-12-27 11:49
POSIX.pm	16.44 KB	-r--r--r--	2014-12-27 11:49
POSIX.pod	65.45 KB	-r--r--r--	2014-12-27 11:49
PerlIO.pm	10.21 KB	-r--r--r--	2014-12-27 11:48
SDBM_File.pm	3.46 KB	-r--r--r--	2014-12-27 11:49
Safe.pm	24.27 KB	-r--r--r--	2014-12-27 11:49
SelectSaver.pm	1.05 KB	-r--r--r--	2014-12-27 11:48
SelectSaver.t	365 B	-r--r--r--	2014-12-27 11:48
SelfLoader.pm	16.94 KB	-r--r--r--	2014-12-27 11:49
Socket.pm	35.47 KB	-r--r--r--	2014-12-27 11:49
Storable.pm	42.13 KB	-r--r--r--	2015-01-15 22:12
Symbol.pm	4.68 KB	-r--r--r--	2014-12-27 11:48
Symbol.t	2.52 KB	-r--r--r--	2014-12-27 11:48
Test.pm	28.12 KB	-r--r--r--	2014-12-27 11:48
Thread.pm	8.09 KB	-r--r--r--	2014-12-27 11:48
Thread.t	1.59 KB	-r--r--r--	2014-12-27 11:48
UNIVERSAL.pm	6.97 KB	-r--r--r--	2014-12-27 11:49
XSLoader.pm	9.99 KB	-r--r--r--	2016-10-10 17:38
_charnames.pm	31.63 KB	-r--r--r--	2014-12-27 11:49
arybase.pm	2.75 KB	-r--r--r--	2014-12-27 11:49
attributes.pm	15.95 KB	-r--r--r--	2014-12-27 12:30
autodie.pm	11.9 KB	-r--r--r--	2014-12-27 11:49
autouse.pm	4.14 KB	-r--r--r--	2014-12-27 11:48
base.pm	7.21 KB	-r--r--r--	2014-12-27 11:48
bigint.pm	18.29 KB	-r--r--r--	2014-12-27 11:49
bignum.pm	17.7 KB	-r--r--r--	2014-12-27 11:49
bigrat.pm	13.58 KB	-r--r--r--	2014-12-27 11:49
blib.pm	2.04 KB	-r--r--r--	2014-12-27 11:48
blib.t	1.81 KB	-r--r--r--	2014-12-27 11:48
buildcustomize.pl	1.1 KB	-rw-r--r--	2016-10-10 17:36
bytes.pm	2.96 KB	-r--r--r--	2014-12-27 11:48
bytes.t	2.78 KB	-r--r--r--	2014-12-27 11:48
bytes_heavy.pl	758 B	-r--r--r--	2014-12-27 11:48
charnames.pm	20.39 KB	-r--r--r--	2014-12-27 11:49
charnames.t	372.58 KB	-r--r--r--	2014-12-27 11:49
constant.pm	13.99 KB	-r--r--r--	2014-12-27 11:49
dbm_filter_util.pl	1.83 KB	-r--r--r--	2014-12-27 11:48
deprecate.pm	3.01 KB	-r--r--r--	2014-12-27 11:48
diagnostics.pm	18.26 KB	-r--r--r--	2014-12-27 11:48
diagnostics.t	7.1 KB	-r--r--r--	2014-12-27 11:49
dumpvar.pl	15.24 KB	-r--r--r--	2014-12-27 11:48
dumpvar.t	5.81 KB	-r--r--r--	2014-12-27 11:48
encoding.pm	20.04 KB	-r--r--r--	2014-12-27 11:49
experimental.pm	3.88 KB	-r--r--r--	2014-12-27 11:49
feature.pm	13.46 KB	-rw-r--r--	2014-12-27 12:46
feature.t	78 B	-r--r--r--	2014-12-27 11:48
fields.pm	9.24 KB	-r--r--r--	2014-12-27 11:48
filetest.pm	3.91 KB	-r--r--r--	2014-12-27 11:48
filetest.t	3 KB	-r--r--r--	2014-12-27 11:48
h2ph.t	1.58 KB	-r--r--r--	2014-12-27 11:48
h2xs.t	7.64 KB	-r--r--r--	2014-12-27 11:48
if.pm	2.63 KB	-r--r--r--	2014-12-27 11:48
integer.pm	3.18 KB	-r--r--r--	2014-12-27 11:48
integer.t	1.32 KB	-r--r--r--	2014-12-27 11:48
less.pm	3.13 KB	-r--r--r--	2014-12-27 11:48
less.t	901 B	-r--r--r--	2014-12-27 11:48
lib.pm	5.87 KB	-r--r--r--	2016-10-10 17:37
locale.pm	2.13 KB	-r--r--r--	2014-12-27 11:49
locale.t	72.86 KB	-r--r--r--	2014-12-27 11:49
mro.pm	9.86 KB	-r--r--r--	2014-12-27 11:49
open.pm	7.83 KB	-r--r--r--	2014-12-27 11:48
open.t	6.4 KB	-r--r--r--	2014-12-27 11:48
ops.pm	997 B	-r--r--r--	2014-12-27 11:48
overload.pm	51.41 KB	-r--r--r--	2014-12-27 11:49
overload.t	71.98 KB	-r--r--r--	2014-12-27 11:49
overload64.t	8.33 KB	-r--r--r--	2014-12-27 11:48
overloading.pm	1.77 KB	-r--r--r--	2014-12-27 11:48
overloading.t	3.25 KB	-r--r--r--	2014-12-27 11:48
parent.pm	2.83 KB	-r--r--r--	2014-12-27 11:48
perl5db.pl	307.01 KB	-r--r--r--	2014-12-27 11:49
perl5db.t	56.06 KB	-r--r--r--	2014-12-27 11:49
perldoc.pod	8.69 KB	-r--r--r--	2014-12-27 11:48
perlfaq.pm	94 B	-r--r--r--	2014-12-27 11:49
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perlfaq2.pod	9.24 KB	-r--r--r--	2014-12-27 11:49
perlfaq3.pod	37.67 KB	-r--r--r--	2014-12-27 11:48
perlfaq4.pod	87.39 KB	-r--r--r--	2014-12-27 11:49
perlfaq5.pod	54.11 KB	-r--r--r--	2014-12-27 11:49
perlfaq6.pod	38.66 KB	-r--r--r--	2014-12-27 11:49
perlfaq7.pod	36.98 KB	-r--r--r--	2014-12-27 11:49
perlfaq8.pod	48.9 KB	-r--r--r--	2014-12-27 11:48
perlfaq9.pod	14.7 KB	-r--r--r--	2014-12-27 11:48
perlglossary.pod	133.98 KB	-r--r--r--	2014-12-27 11:48
perlxs.pod	76.6 KB	-r--r--r--	2014-12-27 11:49
perlxstut.pod	48.91 KB	-r--r--r--	2014-12-27 11:48
perlxstypemap.pod	23.02 KB	-r--r--r--	2014-12-27 11:49
re.pm	17.55 KB	-r--r--r--	2014-12-27 11:49
sigtrap.pm	7.44 KB	-r--r--r--	2014-12-27 11:48
sigtrap.t	2.65 KB	-r--r--r--	2014-12-27 11:48
sort.pm	5.94 KB	-r--r--r--	2014-12-27 11:48
sort.t	5.54 KB	-r--r--r--	2014-12-27 11:49
strict.pm	3.83 KB	-r--r--r--	2014-12-27 11:49
strict.t	439 B	-r--r--r--	2014-12-27 11:49
subs.pm	848 B	-r--r--r--	2014-12-27 11:48
subs.t	79 B	-r--r--r--	2014-12-27 11:48
threads.pm	34.93 KB	-r--r--r--	2014-12-27 11:49
utf8.pm	7.64 KB	-r--r--r--	2014-12-27 11:49
utf8.t	21.67 KB	-r--r--r--	2014-12-27 11:48
utf8_heavy.pl	31 KB	-r--r--r--	2014-12-27 11:49
vars.pm	2.36 KB	-r--r--r--	2014-12-27 11:48
vars.t	2.68 KB	-r--r--r--	2014-12-27 11:48
vars_carp.t	246 B	-r--r--r--	2014-12-27 11:48
version.pm	1.58 KB	-r--r--r--	2014-12-27 11:48
version.pod	9.62 KB	-r--r--r--	2014-12-27 11:48
vmsish.pm	4.21 KB	-r--r--r--	2014-12-27 11:48
vmsish.t	7.21 KB	-r--r--r--	2014-12-27 11:48
warnings.pm	38.5 KB	-rw-r--r--	2014-12-27 11:49
warnings.t	120 B	-r--r--r--	2014-12-27 11:48

Rename

package Env;

our $VERSION = '1.04';

=head1 NAME

Env - perl module that imports environment variables as scalars or arrays

=head1 SYNOPSIS

use Env;
    use Env qw(PATH HOME TERM);
    use Env qw($SHELL @LD_LIBRARY_PATH);

=head1 DESCRIPTION

Perl maintains environment variables in a special hash named C<%ENV>.  For
when this access method is inconvenient, the Perl module C<Env> allows
environment variables to be treated as scalar or array variables.

The C<Env::import()> function ties environment variables with suitable
names to global Perl variables with the same names.  By default it
ties all existing environment variables (C<keys %ENV>) to scalars.  If
the C<import> function receives arguments, it takes them to be a list of
variables to tie; it's okay if they don't yet exist. The scalar type
prefix '$' is inferred for any element of this list not prefixed by '$'
or '@'. Arrays are implemented in terms of C<split> and C<join>, using
C<$Config::Config{path_sep}> as the delimiter.

After an environment variable is tied, merely use it like a normal variable.
You may access its value

@path = split(/:/, $PATH);
    print join("\n", @LD_LIBRARY_PATH), "\n";

or modify it

$PATH .= ":.";
    push @LD_LIBRARY_PATH, $dir;

however you'd like. Bear in mind, however, that each access to a tied array
variable requires splitting the environment variable's string anew.

The code:

use Env qw(@PATH);
    push @PATH, '.';

is equivalent to:

use Env qw(PATH);
    $PATH .= ":.";

except that if C<$ENV{PATH}> started out empty, the second approach leaves
it with the (odd) value "C<:.>", but the first approach leaves it with "C<.>".

To remove a tied environment variable from
the environment, assign it the undefined value

undef $PATH;
    undef @LD_LIBRARY_PATH;

=head1 LIMITATIONS

On VMS systems, arrays tied to environment variables are read-only. Attempting
to change anything will cause a warning.

=head1 AUTHOR

Chip Salzenberg E<lt>F<chip@fin.uucp>E<gt>
and
Gregor N. Purdy E<lt>F<gregor@focusresearch.com>E<gt>

=cut

sub import {
    my ($callpack) = caller(0);
    my $pack = shift;
    my @vars = grep /^[\$\@]?[A-Za-z_]\w*$/, (@_ ? @_ : keys(%ENV));
    return unless @vars;

@vars = map { m/^[\$\@]/ ? $_ : '$'.$_ } @vars;

eval "package $callpack; use vars qw(" . join(' ', @vars) . ")";
    die $@ if $@;
    foreach (@vars) {
	my ($type, $name) = m/^([\$\@])(.*)$/;
	if ($type eq '$') {
	    tie ${"${callpack}::$name"}, Env, $name;
	} else {
	    if ($^O eq 'VMS') {
		tie @{"${callpack}::$name"}, Env::Array::VMS, $name;
	    } else {
		tie @{"${callpack}::$name"}, Env::Array, $name;
	    }
	}
    }
}

sub TIESCALAR {
    bless \($_[1]);
}

sub FETCH {
    my ($self) = @_;
    $ENV{$$self};
}

sub STORE {
    my ($self, $value) = @_;
    if (defined($value)) {
	$ENV{$$self} = $value;
    } else {
	delete $ENV{$$self};
    }
}

######################################################################

package Env::Array;
 
use Config;
use Tie::Array;

@ISA = qw(Tie::Array);

my $sep = $Config::Config{path_sep};

sub TIEARRAY {
    bless \($_[1]);
}

sub FETCHSIZE {
    my ($self) = @_;
    return 1 + scalar(() = $ENV{$$self} =~ /\Q$sep\E/g);
}

sub STORESIZE {
    my ($self, $size) = @_;
    my @temp = split($sep, $ENV{$$self});
    $#temp = $size - 1;
    $ENV{$$self} = join($sep, @temp);
}

sub CLEAR {
    my ($self) = @_;
    $ENV{$$self} = '';
}

sub FETCH {
    my ($self, $index) = @_;
    return (split($sep, $ENV{$$self}))[$index];
}

sub STORE {
    my ($self, $index, $value) = @_;
    my @temp = split($sep, $ENV{$$self});
    $temp[$index] = $value;
    $ENV{$$self} = join($sep, @temp);
    return $value;
}

sub EXISTS {
    my ($self, $index) = @_;
    return $index < $self->FETCHSIZE;
}

sub DELETE {
    my ($self, $index) = @_;
    my @temp = split($sep, $ENV{$$self});
    my $value = splice(@temp, $index, 1, ());
    $ENV{$$self} = join($sep, @temp);
    return $value;
}

sub PUSH {
    my $self = shift;
    my @temp = split($sep, $ENV{$$self});
    push @temp, @_;
    $ENV{$$self} = join($sep, @temp);
    return scalar(@temp);
}

sub POP {
    my ($self) = @_;
    my @temp = split($sep, $ENV{$$self});
    my $result = pop @temp;
    $ENV{$$self} = join($sep, @temp);
    return $result;
}

sub UNSHIFT {
    my $self = shift;
    my @temp = split($sep, $ENV{$$self});
    my $result = unshift @temp, @_;
    $ENV{$$self} = join($sep, @temp);
    return $result;
}

sub SHIFT {
    my ($self) = @_;
    my @temp = split($sep, $ENV{$$self});
    my $result = shift @temp;
    $ENV{$$self} = join($sep, @temp);
    return $result;
}

sub SPLICE {
    my $self = shift;
    my $offset = shift;
    my $length = shift;
    my @temp = split($sep, $ENV{$$self});
    if (wantarray) {
	my @result = splice @temp, $offset, $length, @_;
	$ENV{$$self} = join($sep, @temp);
	return @result;
    } else {
	my $result = scalar splice @temp, $offset, $length, @_;
	$ENV{$$self} = join($sep, @temp);
	return $result;
    }
}

######################################################################

package Env::Array::VMS;
use Tie::Array;

@ISA = qw(Tie::Array);
 
sub TIEARRAY {
    bless \($_[1]);
}

sub FETCHSIZE {
    my ($self) = @_;
    my $i = 0;
    while ($i < 127 and defined $ENV{$$self . ';' . $i}) { $i++; };
    return $i;
}

sub FETCH {
    my ($self, $index) = @_;
    return $ENV{$$self . ';' . $index};
}

sub EXISTS {
    my ($self, $index) = @_;
    return $index < $self->FETCHSIZE;
}

sub DELETE { }