#!/usr/bin/perl
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#!/usr/bin/perl -w
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use strict;
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use strict;
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use warnings;
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use GraphViz;
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use Gtk2;
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use Time::HiRes qw( usleep ualarm gettimeofday tv_interval nanosleep clock_gettime clock_getres clock_nanosleep clock stat );
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use Proc::Background;
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use IO::CaptureOutput qw(capture qxx qxy);
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$ENV{TEMP}="ALIREZA";
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my $cmd = "xterm -e sh t.sh";
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my ($stdout,$exit)=run_cmd_in_back_ground_get_stdout( $cmd);
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##########
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# run external commands
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##########
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sub run_cmd_in_back_ground
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{
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my $command = shift;
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#print "\t$command\n";
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### Start running the Background Job:
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my $proc = Proc::Background->new($command);
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my $PID = $proc->pid;
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my $start_time = $proc->start_time;
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my $alive = $proc->alive;
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### While $alive is NOT '0', then keep checking till it is...
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# *When $alive is '0', it has finished executing.
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while($alive ne 0)
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{
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$alive = $proc->alive;
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# This while loop will cause Gtk2 to conti processing events, if
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# there are events pending... *which there are...
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while (Gtk2->events_pending) {
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Gtk2->main_iteration;
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}
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Gtk2::Gdk->flush;
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usleep(1000);
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}
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my $end_time = $proc->end_time;
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# print "*Command Completed at $end_time, with PID = $PID\n\n";
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# Since the while loop has exited, the BG job has finished running:
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# so close the pop-up window...
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# $popup_window->hide;
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# Get the RETCODE from the Background Job using the 'wait' method
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my $retcode = $proc->wait;
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$retcode /= 256;
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print "\t*RETCODE == $retcode\n\n";
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Gtk2::Gdk->flush;
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### Check if the RETCODE returned with an Error:
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if ($retcode ne 0) {
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print "Error: The Background Job ($command) returned with an Error...!\n";
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return 1;
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} else {
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#print "Success: The Background Job Completed Successfully...!\n";
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return 0;
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}
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}
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sub run_cmd_in_back_ground_get_stdout
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{
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my $cmd=shift;
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my $exit;
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my ($stdout, $stderr);
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capture { $exit=run_cmd_in_back_ground($cmd) } \$stdout, \$stderr;
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return ($stdout,$exit,$stderr);
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}
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my $g = GraphViz->new();
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$g->add_node('London');
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$g->add_node('Paris', label => 'City of\nlurve');
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$g->add_node('New York');
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$g->add_edge('London' => 'Paris');
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$g->add_edge('London' => 'New York', label => 'Far');
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$g->add_edge('Paris' => 'London');
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#system ("sh t.sh");
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print $g->as_png;
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No newline at end of file
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No newline at end of file
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