#!/usr/bin/perl -w
use Getopt::Std;
use File::Basename;

# Default values
$SET_TERM_TEMPLATE='set term push; set term x11 enhanced; set term wxt enhanced; set term pop';
$DELAY_BOUND="[]";
$MULTIPDF_FILENAME="all.pdf";

# Process command line options
my %opt;
getopts('bd:enso:pP', \%opt);

$PLOT_BOTH_DIRECTIONS=1 if $opt{'b'};
$DELAY_BOUND="[0:".$opt{'d'}."]" if $opt{'d'};
$SET_TERM_TEMPLATE='set term postscript color eps enhanced; set output "${FILE}.eps"' if $opt{'e'};
$SET_TERM_TEMPLATE='set term png enhanced; set output "${FILE}.png"' if $opt{'n'};
$SET_TERM_TEMPLATE='set term svg enhanced; set output "${FILE}.svg"' if $opt{'s'};
$MULTIPDF_FILENAME=$opt{'o'} if $opt{'o'};
if ($opt{'p'}) {
    $SET_TERM_TEMPLATE='set term postscript color landscape enhanced';
    $PDF_OUTPUT=1;
}
if ($opt{'P'}) {
    $SET_TERM_TEMPLATE='set term postscript color landscape enhanced';
    $MULTIPLE_GRAPHS_IN_PDF=1;
    $GNUPLOT_CMD_FILE="plot_commands.$$";
    unlink ${GNUPLOT_CMD_FILE};
}

if ($#ARGV < 0 && -r "delay_stats.dat") {$ARGV[0]="delay_stats.dat";}

# Process the data files and plot graph(s)
foreach $dat_file (@ARGV) {
    ($FILE, , ) = fileparse($dat_file, (".dat"));

    # Get labels from data file
    $COMMAND="";
    $STREAMS="";
    open F, $dat_file;
    while (<F>) {
	if (/wclient.*/) {
	    $_=$&;
	    s/ -o [^ ]*//;
	    $COMMAND="Results of: $_";
	    #$COMMAND="Results of: grep -o 'wclient.*'|sed -e 's/ -o [^ ]*//' -e 's/ [^ ]* ?$//')"
	} elsif (/^#[^#] */) {
	    $STREAMS .= "$'";
	}
	
	
    }
    close F;
    $STREAMS =~ s/\n/\\n/g;

    if ($MULTIPLE_GRAPHS_IN_PDF) {
	open CMD, ">>$GNUPLOT_CMD_FILE";
    } elsif ($PDF_OUTPUT) {
	open CMD, "| gnuplot | ps2pdf - ${FILE}.pdf";
    } else {
	open CMD, "| gnuplot -persist";
    }
#     close CMD;
#     open CMD, ">&STDOUT";
    $SET_TERM = $SET_TERM_TEMPLATE;
    $SET_TERM =~ s/\${FILE}/$FILE/;

    print CMD qq/
${SET_TERM}
set xlabel "Response-Time [ms]"
set ylabel "Cumulative % of packets"
set key right bottom nobox
set style data linespoints
#set logscale x
set grid
set size 1,0.8
unset label
set label "${COMMAND}" noenhanced at graph 0,1.3
set label "${STREAMS}" noenhanced at graph 0,1.2 font "Helvetica,9"
set style line 1  lt 1 lc rgb "red"
set style line 2  lt 1 lc rgb "green"
set style line 3  lt 1 lc rgb "blue"
set style line 4  lt 1 lc rgb "magenta"
set style line 5  lt 2 lc rgb "red"
set style line 6  lt 2 lc rgb "green"
set style line 7  lt 2 lc rgb "blue"
set style line 8  lt 2 lc rgb "magenta"
set style line 9  lt 3 lc rgb "red"
set style line 10 lt 3 lc rgb "green"
set style line 11 lt 3 lc rgb "blue"
set style line 12 lt 3 lc rgb "magenta"
/;

    print CMD qq/plot $DELAY_BOUND [0.01:100]\\
     "${FILE}.dat" index 0 with linespoints ls 1 title "AC\\\\_VO",\\
     "${FILE}.dat" index 1 with linespoints ls 2 title "AC\\\\_VI",\\
     "${FILE}.dat" index 2 with linespoints ls 3 title "AC\\\\_BE",\\
     "${FILE}.dat" index 3 with linespoints ls 4 title "AC\\\\_BK"/;

    if ($PLOT_BOTH_DIRECTIONS) {
	print CMD qq/,\\
     "${FILE}.dat" index 0 using 1:3 with lines ls 5  title "AC\\\\_VO cs",\\
     "${FILE}.dat" index 1 using 1:3 with lines ls 6  title "AC\\\\_VI cs",\\
     "${FILE}.dat" index 2 using 1:3 with lines ls 7  title "AC\\\\_BE cs",\\
     "${FILE}.dat" index 3 using 1:3 with lines ls 8  title "AC\\\\_BK cs",\\
     "${FILE}.dat" index 0 using 1:4 with lines ls 9  title "AC\\\\_VO sc",\\
     "${FILE}.dat" index 1 using 1:4 with lines ls 10 title "AC\\\\_VI sc",\\
     "${FILE}.dat" index 2 using 1:4 with lines ls 11 title "AC\\\\_BE sc",\\
     "${FILE}.dat" index 3 using 1:4 with lines ls 12 title "AC\\\\_BK sc"
/;
    } else {
	print CMD "\n";
    }
    close CMD;
}

if ($MULTIPLE_GRAPHS_IN_PDF) {
    system("gnuplot $GNUPLOT_CMD_FILE|ps2pdf - $MULTIPDF_FILENAME");
    unlink ${GNUPLOT_CMD_FILE};
}