File Manager

X7ROOT File Manager

Current Path: /usr/share/perl5/vendor_perl

usr / share / perl5 / vendor_perl /

📁 ..
📁 Algorithm
📁 App
📁 Archive
📁 Authen
📁 B
📁 CPAN
📄 CPAN.pm(138.01 KB)
📁 Carp
📄 Carp.pm(30.32 KB)
📁 Config
📁 Data
📁 Date
📁 Digest
📄 Digest.pm(10.46 KB)
📁 Encode
📄 Env.pm(5.39 KB)
📁 Error
📄 Error.pm(24.29 KB)
📄 Expect.pm(98.09 KB)
📁 Exporter
📄 Exporter.pm(18.31 KB)
📁 ExtUtils
📄 Fatal.pm(56.81 KB)
📁 File
📁 Filter
📁 Getopt
📁 Git
📄 Git.pm(46.95 KB)
📁 HTML
📁 HTTP
📁 IO
📁 IPC
📁 JSON
📁 LWP
📄 LWP.pm(21.17 KB)
📁 Locale
📁 MRO
📁 Math
📁 Module
📁 Mozilla
📁 Net
📁 POD2
📁 Package
📁 Params
📁 Parse
📁 Perl
📁 PerlIO
📁 Pod
📁 Software
📁 Sub
📁 TAP
📁 Term
📁 Test
📁 Test2
📄 Test2.pm(6.24 KB)
📁 Text
📁 Thread
📁 Time
📁 Try
📁 Types
📁 WWW
📁 autodie
📄 autodie.pm(12.58 KB)
📄 bigint.pm(22.85 KB)
📄 bignum.pm(20.64 KB)
📄 bigrat.pm(15.78 KB)
📄 constant.pm(14.38 KB)
📄 experimental.pm(6.83 KB)
📁 inc
📁 lib
📁 libwww
📁 local
📄 newgetopt.pl(2.15 KB)
📄 ok.pm(967 B)
📄 parent.pm(2.51 KB)
📄 perldoc.pod(9.16 KB)
📄 perlfaq.pm(77 B)
📄 perlfaq.pod(22.22 KB)
📄 perlfaq1.pod(14.12 KB)
📄 perlfaq2.pod(9.24 KB)
📄 perlfaq3.pod(36.66 KB)
📄 perlfaq4.pod(87.3 KB)
📄 perlfaq5.pod(54.21 KB)
📄 perlfaq6.pod(38.69 KB)
📄 perlfaq7.pod(36.93 KB)
📄 perlfaq8.pod(48.93 KB)
📄 perlfaq9.pod(14.5 KB)
📄 perlglossary.pod(134.02 KB)

Editing: Env.pm

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 { }

X7ROOT File Manager

Editing: Env.pm

Upload File

Create Folder