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#
# Copyright (C) 2008-2021 Alexis Bienvenüe <paamc@passoire.fr>
#
# This file is part of Auto-Multiple-Choice
#
# Auto-Multiple-Choice is free software: you can redistribute it
# and/or modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, either version 2 of
# the License, or (at your option) any later version.
#
# Auto-Multiple-Choice is distributed in the hope that it will be
# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Auto-Multiple-Choice. If not, see
# <http://www.gnu.org/licenses/>.
use warnings;
use 5.012;
package AMC::Subprocess;
use AMC::Basic;
use IPC::Open2;
sub new {
my (%o) = (@_);
my $self = {
file => '',
ipc_in => '',
ipc_out => '',
ipc => '',
args => ['%f'],
first_arg => '',
mode => 'detect',
exec_file => '',
};
for my $k ( keys %o ) {
$self->{$k} = $o{$k} if ( defined( $self->{$k} ) );
}
if ( !$self->{exec_file} ) {
if ( $self->{mode} ) {
$self->{exec_file} = "auto-multiple-choice";
$self->{first_arg} = $self->{mode};
}
}
if ( !commande_accessible( $self->{exec_file} ) ) {
die "AMC::Subprocess: No program to execute";
}
bless $self;
return ($self);
}
sub set {
my ( $self, %oo ) = (@_);
for my $k ( keys %oo ) {
$self->{$k} = $oo{$k} if ( defined( $self->{$k} ) );
}
}
sub commande {
my ( $self, @cmd ) = (@_);
my @r = ();
if ( !$self->{ipc} ) {
debug "Exec subprocess...";
my @a =
map { ( $_ eq '%f' ? $self->{file} : $_ ) } ( @{ $self->{args} } );
unshift @a, $self->{first_arg} if ( $self->{first_arg} );
debug join( ' ', $self->{exec_file}, @a );
$self->{times} = [ times() ];
$self->{ipc} =
open2( $self->{ipc_out}, $self->{ipc_in}, $self->{exec_file}, @a );
binmode $self->{ipc_out}, ':utf8';
binmode $self->{ipc_in}, ':utf8';
debug "PID="
. $self->{ipc} . " : "
. $self->{ipc_in} . " --> "
. $self->{ipc_out};
}
my $s = join( ' ', @cmd );
debug "CMD : $s";
print { $self->{ipc_in} } "$s\n";
my $o;
GETREPONSE: while ( $o = readline( $self->{ipc_out} ) ) {
chomp($o);
debug "|> $o";
last GETREPONSE if ( $o =~ /_{2}END_{2}/ );
push @r, $o;
}
return (@r);
}
sub ferme_commande {
my ($self) = (@_);
if ( $self->{ipc} ) {
debug "Image sending QUIT";
$self->commande("quit");
waitpid $self->{ipc}, 0;
$self->{ipc} = '';
$self->{ipc_in} = '';
$self->{ipc_out} = '';
my @tb = times();
debug sprintf(
"Image finished: parent times [%7.02f,%7.02f]",
$tb[0] + $tb[1] - $self->{times}->[0] - $self->{times}->[1],
$tb[2] + $tb[3] - $self->{times}->[2] - $self->{times}->[3]
);
}
}
sub DESTROY {
my ($self) = (@_);
$self->ferme_commande();
}
1;
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