Gecko [ theprintave.ca ]

Name	Size	Permission	Date
Carp	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
Exporter	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
File	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
Getopt	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
Hash	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
IO	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
IPC	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
List	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
Scalar	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
Text	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
Tie	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
auto	[ DIR ]	drwxr-xr-x	2022-02-06 11:02
unicore	[ DIR ]	drwxr-xr-x	2022-02-06 11:02
warnings	[ DIR ]	drwxr-xr-x	2025-04-15 06:10
AutoLoader.pm	5.36 KB	-rw-r--r--	2025-04-08 13:21
Carp.pm	24.8 KB	-rw-r--r--	2025-04-08 13:21
Config.pm	3.14 KB	-rw-r--r--	2025-04-08 13:21
Config_git.pl	409 B	-rw-r--r--	2025-04-08 13:21
Config_heavy.pl	54.01 KB	-rw-r--r--	2025-04-08 13:21
Cwd.pm	17.24 KB	-rw-r--r--	2025-04-08 13:21
DynaLoader.pm	10.25 KB	-rw-r--r--	2025-04-08 13:21
Errno.pm	4.82 KB	-rw-r--r--	2025-04-08 13:21
Exporter.pm	2.28 KB	-rw-r--r--	2025-04-08 13:21
Fcntl.pm	2.11 KB	-rw-r--r--	2025-04-08 13:21
FileHandle.pm	2.06 KB	-rw-r--r--	2025-04-08 13:21
IO.pm	469 B	-rw-r--r--	2025-04-08 13:21
POSIX.pm	19.91 KB	-rw-r--r--	2025-04-08 13:21
SelectSaver.pm	344 B	-rw-r--r--	2025-04-08 13:21
Socket.pm	13.5 KB	-rw-r--r--	2025-04-08 13:21
Symbol.pm	2.15 KB	-rw-r--r--	2025-04-08 13:21
XSLoader.pm	3.87 KB	-rw-r--r--	2025-04-08 13:21
attributes.pm	3 KB	-rw-r--r--	2025-04-08 13:21
base.pm	8.7 KB	-rw-r--r--	2025-04-08 13:21
bytes.pm	489 B	-rw-r--r--	2025-04-08 13:21
bytes_heavy.pl	758 B	-rw-r--r--	2025-04-08 13:21
constant.pm	5.6 KB	-rw-r--r--	2025-04-08 13:21
feature.pm	5.54 KB	-rw-r--r--	2025-04-08 13:21
fields.pm	4.89 KB	-rw-r--r--	2025-04-08 13:21
integer.pm	172 B	-rw-r--r--	2025-04-08 13:21
lib.pm	2.23 KB	-rw-r--r--	2025-04-08 13:21
locale.pm	3.37 KB	-rw-r--r--	2025-04-08 13:21
overload.pm	4.38 KB	-rw-r--r--	2025-04-08 13:21
overloading.pm	964 B	-rw-r--r--	2025-04-08 13:21
parent.pm	460 B	-rw-r--r--	2025-04-08 13:21
re.pm	9.48 KB	-rw-r--r--	2025-04-08 13:21
strict.pm	1.57 KB	-rw-r--r--	2025-04-08 13:21
utf8.pm	341 B	-rw-r--r--	2025-04-08 13:21
vars.pm	1.12 KB	-rw-r--r--	2025-04-08 13:21
warnings.pm	26.91 KB	-rw-r--r--	2025-04-08 13:21

Rename

package Symbol;

use strict;
use warnings;

require Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(gensym ungensym qualify qualify_to_ref);
our @EXPORT_OK = qw(delete_package geniosym);

our $VERSION = '1.09';

my $genpkg = "Symbol::";
my $genseq = 0;

my %global = map {$_ => 1} qw(ARGV ARGVOUT ENV INC SIG STDERR STDIN STDOUT);

#
# Note that we never _copy_ the glob; we just make a ref to it.
# If we did copy it, then SVf_FAKE would be set on the copy, and
# glob-specific behaviors (e.g. C<*$ref = \&func>) wouldn't work.
#
sub gensym () {
    my $name = "GEN" . $genseq++;
    no strict 'refs';
    my $ref = \*{$genpkg . $name};
    delete $$genpkg{$name};
    $ref;
}

sub geniosym () {
    my $sym = gensym();
    # force the IO slot to be filled
    select(select $sym);
    *$sym{IO};
}

sub ungensym ($) {}

sub qualify ($;$) {
    my ($name) = @_;
    if (!ref($name) && index($name, '::') == -1 && index($name, "'") == -1) {
	my $pkg;
	# Global names: special character, "^xyz", or other. 
	if ($name =~ /^(([^a-z])|(\^[a-z_]+))\z/i || $global{$name}) {
	    # RGS 2001-11-05 : translate leading ^X to control-char
	    $name =~ s/^\^([a-z_])/'qq(\c'.$1.')'/eei;
	    $pkg = "main";
	}
	else {
	    $pkg = (@_ > 1) ? $_[1] : caller;
	}
	$name = $pkg . "::" . $name;
    }
    $name;
}

sub qualify_to_ref ($;$) {
    no strict 'refs';
    return \*{ qualify $_[0], @_ > 1 ? $_[1] : caller };
}

#
# of Safe.pm lineage
#
sub delete_package ($) {
    my $pkg = shift;

# expand to full symbol table name if needed

unless ($pkg =~ /^main::.*::$/) {
        $pkg = "main$pkg"	if	$pkg =~ /^::/;
        $pkg = "main::$pkg"	unless	$pkg =~ /^main::/;
        $pkg .= '::'		unless	$pkg =~ /::$/;
    }

my($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
    no strict 'refs';
    my $stem_symtab = *{$stem}{HASH};
    return unless defined $stem_symtab and exists $stem_symtab->{$leaf};

# free all the symbols in the package

my $leaf_symtab = *{$stem_symtab->{$leaf}}{HASH};
    foreach my $name (keys %$leaf_symtab) {
        undef *{$pkg . $name};
    }
    use strict 'refs';

# delete the symbol table

%$leaf_symtab = ();
    delete $stem_symtab->{$leaf};
}