#!/usr/bin/perl -w

# perl script for talk to Gaw
#  take an ascii file as argument and load it to gaw


use Socket;
use IO::Socket;

$progname = "pttg";
$debug = 0;
$remote_host = "olix";
$remote_port = "1946";
$ifile = "";
$ofile = "";

@prelines = ( "table_new hqdata" );
@postlines = (
    "panel 4",
    "copyvar sample p0",
    "copyvar in_win p1",
    "copyvar zero_l p2",
    "color_bg #ffffff",
    "export_img hqimg png",
    "export_data hqdata ascii",
);

for ( $i = 0; $i <= $#ARGV ; $i++ ) {
    if ( $ARGV[$i] eq "-d" ) {
        $debug++;
    } elsif ( $ARGV[$i] eq "-h" ) {
        print_help();
    } elsif ( $ARGV[$i] eq "-p" ) {
        $i++;
        $remote_port = $ARGV[$i];
    } elsif ( $ARGV[$i] eq "-f" ) {
        $i++;
        $ifile = $ARGV[$i];
    } elsif ( $ARGV[$i] eq "-o" ) {
        $i++;
        $ofile = $ARGV[$i];
    } else {
        $remote_host =  $ARGV[$i];
    }
}
if ( $ofile ne "" ) {
    unless (open( $ofd, ">$ofile")) {
	print STDERR "Can't open $ofile: $!\n";
	return;
    }
}

$remote = open_cnx($remote_host, $remote_port);
sendLines(\@prelines, $remote);
modify_ascii_file($ifile, $remote);
sendLines(\@postlines, $remote);
add_col($ifile,  $remote);
if ( $ofile ne "" ) {
    close($ofd);
}
sleep(2);
close $remote;

sub sendLines {
    my($refList, $remote) = @_;

    foreach $line ( @{$refList}  ) {
        send_cnx( $remote, "$line\n");
    }
}


sub add_col {
    my($filename, $remote) = @_;
  
    my($first) = 1;
#  print "$filename\n";
    unless (open(INPUT, "<$filename")) {
	print STDERR "Can't open $filename: $!\n";
	return;
    }

    while (<INPUT>) {
	chomp();
        @fields = split(" ", $_);

	if ( $first ) {
	    $first = 0;
	    send_cnx( $remote, "coladd col10 voltage\n");
	    send_cnx( $remote, "coldatas col10\n");
	    $i = $#fields ;
	    next;
	}
	send_cnx( $remote, "$fields[$i]\n");
    }
    send_cnx ( $remote, "enddata\n");
    send_cnx ( $remote, "copyvar col10 p3\n");
    close(INPUT);
}

sub modify_ascii_file {
    my($filename, $remote) = @_;
  
    my($first) = 1;
#  print "$filename\n";
    unless (open(INPUT, "<$filename")) {
	print STDERR "Can't open $filename: $!\n";
	return;
    }

    while (<INPUT>) {
	if ( $first ) {
	    $first = 0;
	    send_cnx( $remote, "variables ");
	    send_cnx( $remote, $_ ) ;
	    send_cnx( $remote, "rowdatas\n");
	    next;
	}
	send_cnx( $remote, "$_");
    }
    send_cnx ( $remote, "enddata\n");
    close(INPUT);
}

sub send_cnx {
    my($remote, $line) = @_;

    my($bytes);
    # check if socket is closed
    if (!defined($remote)) {
	die "closed\n";
    }    
    if ( $ofile ne "" ) {
	print $ofd "$line";
    }
    print $remote "$line" ;

    $n = recv ($remote, $bytes, 1000, MSG_DONTWAIT );
    if ( defined($n) ) {
	$bytes =~ s/\n//g;
	if ( $bytes ne "" ){
	    print STDERR "$bytes\n";
	}
    }
}

sub getReply {
    my($remote) = @_;

    my $byte;
    print STDOUT "sysread ";
    if (sysread($remote, $byte, 1) == 1) {
	print STDOUT "Read $byte";
    }
}

# open connection to host 
sub open_cnx {
    my($host, $port) = @_;
    
    if ( ! defined($host)){
        die ( "host not defined\n");
    }
#    print "$host $port\n";
    my($remote);
    $remote = IO::Socket::INET->new( Proto     => "tcp",
        PeerAddr  => $host,
        PeerPort  => $port );
#        Blocking  => 1 );       # no  blocking
    unless ($remote) {
        die "$progname: cannot connect to daemon on $host";
    }
    $remote->autoflush(1);
#    binmode($remote);

    return $remote;
}

sub print_help {
  print STDERR ("pttg [options] <host>    : connect to host and send a data file.\n");
  print STDERR ("  -f <datafile>          : send the data of this ascii file.\n");
  print STDERR ("  -o <file>              : save a copy in file of what is sent to host.\n");
  print STDERR ("  -p <port>              : change port number instead of default 1946.\n");
  print STDERR ("  -h                     : this message.\n");
  print STDERR ("  -d                     : debug, force local host.\n");
  exit(0);
}