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use strict;
use warnings;
package Devel::REPL::Plugin::Interrupt;
# ABSTRACT: Traps SIGINT to kill long-running lines
our $VERSION = '1.003028';
use Devel::REPL::Plugin;
use Sys::SigAction qw(set_sig_handler);
use namespace::autoclean;
around 'run' => sub {
my ($orig, $self) = (shift, shift);
local $SIG{INT} = 'IGNORE';
return $self->$orig(@_);
};
around 'run_once' => sub {
my ($orig, $self) = (shift, shift);
# We have to use Sys::SigAction: Perl 5.8+ has safe signal handling by
# default, and Term::ReadLine::Gnu restarts the interrupted system calls.
# The result is that the signal handler is not fired until you hit Enter.
my $sig_action = set_sig_handler INT => sub {
die "Interrupted.\n";
};
return $self->$orig(@_);
};
around 'read' => sub {
my ($orig, $self) = (shift, shift);
# here SIGINT is caught and only kills the line being edited
while (1) {
my $line = eval { $self->$orig(@_) };
return $line unless $@;
die unless $@ =~ /^Interrupted\./;
# (Term::ReadLine::Gnu kills the line by default, but needs a LF -
# maybe I missed something?)
print "\n";
}
};
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Devel::REPL::Plugin::Interrupt - Traps SIGINT to kill long-running lines
=head1 VERSION
version 1.003028
=head1 DESCRIPTION
By default L<Devel::REPL> exits on SIGINT (usually Ctrl-C). If you load this
module, SIGINT will be trapped and used to kill long-running commands
(statements) and also to kill the line being edited (like eg. BASH do). (You
can still use Ctrl-D to exit.)
=head1 SUPPORT
Bugs may be submitted through L<the RT bug tracker|https://rt.cpan.org/Public/Dist/Display.html?Name=Devel-REPL>
(or L<bug-Devel-REPL@rt.cpan.org|mailto:bug-Devel-REPL@rt.cpan.org>).
There is also an irc channel available for users of this distribution, at
L<C<#devel> on C<irc.perl.org>|irc://irc.perl.org/#devel-repl>.
=head1 AUTHOR
Shawn M Moore, C<< <sartak at gmail dot com> >>
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2007 by Matt S Trout - mst (at) shadowcatsystems.co.uk (L<http://www.shadowcatsystems.co.uk/>).
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
