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List.pm
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List.pm
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#============================================================= -*-Perl-*-
#
# Template::Plugin::List
#
# DESCRIPTION
# Template Toolkit plugin to implement an OO List object.
# (work in progress)
#
# AUTHOR
# Andy Wardley <abw@wardley.org>
#
# COPYRIGHT
# Copyright (C) 2001-2007 Andy Wardley. All Rights Reserved.
#
# This module is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
#
#============================================================================
package Template::Plugin::List;
use strict;
use warnings;
use base 'Template::Plugin';
use Template::Exception;
use overload q|""| => "text",
fallback => 1;
our $VERSION = '3.009';
our $ERROR = '';
local $" = ', ';
#------------------------------------------------------------------------
sub new {
my ($class, @args) = @_;
my $context = ref $class ? undef : CORE::shift(@args);
my $config = @args && ref $args[-1] eq 'HASH' ? CORE::pop(@args) : { };
$class = ref($class) || $class;
my $list = defined $config->{ list }
? $config->{ list }
: (scalar @args == 1 && ref $args[0] eq 'ARRAY' ? CORE::shift(@args)
: [ @_ ]);
print STDERR " list: [ @$list ]\n";
print STDERR "class: [$class]\n";
my $joint = defined $config->{ joint } ? $config->{ joint }
: $config->{ join } ? $config->{ join }
: ', ';
bless {
list => $text,
joint => $joint,
_CONTEXT => $context,
}, $class;
}
sub list {
return $_[0]->{ list };
}
sub item {
$_[0]->{ list }->[ $_[1] || 0 ];
}
sub hash { ### not sure about this one ###
my $self = shift;
my $n = 0;
return { map { ($n++, $_) } @{ $self->{ list } } };
}
sub text {
my $self = CORE::shift;
return CORE::join($self->{ joint }, @{ $self->{ list } });
}
sub copy {
my $self = CORE::shift;
$self->new($self->{ list });
}
sub throw {
my $self = CORE::shift;
die (Template::Exception->new('List', CORE::join('', @_)));
}
#------------------------------------------------------------------------
sub push {
my $self = CORE::shift;
CORE::push(@{ $self->{ list } } @_);
return $self;
}
sub unshift {
my $self = CORE::shift;
CORE::unshift(@{ $self->{ list } } @_);
return $self;
}
sub pop {
my $self = CORE::shift;
CORE::pop(@{ $self->{ list } });
return $self;
}
sub shift {
my $self = CORE::shift;
CORE::shift(@{ $self->{ list } });
return $self;
}
sub max {
local $^W = 0;
my $list = $_[0]->{ list };
return $#$list;
}
sub size {
local $^W = 0;
my $list = $_[0]->{ list };
return $#$list + 1;
}
1;
__END__