#!/bin/sh
Q=en.qi-hardware.com/irclogs/qi-hardware
M=en.qi-hardware.com/mmlogs/milkymist
# Saving to: `en.qi-hardware.com/irclogs/qi-hardware_2010-06-11.log.html'

all=false
case "$1" in
-a)	all=true;;
"")	break;;
*)	echo "usage: $0 [-a]" 1>&2
	exit 1;;
esac

N=3
t=
>_out
n=0
off=2
for y in 10 11 12; do
	for m in 1 2 3 4 5 6 7 8 9 10 11 12; do
		mm=`printf "%02d" $m`
		[ "`echo ${Q}_20${y}-${mm}-*`" = "${Q}_20${y}-${mm}-*" ] &&
		  [ "`echo ${M}_20${y}-${mm}-*`" = "${M}_20${y}-${mm}-*" ] &&
		    continue
		if [ `expr $n % $N` = 0 ]; then
			[ "$t" ] && t=$t,
			t="$t \"$m/$y\" $n"
		else
			t="$t, \"\" $n"
		fi
#		cat ${Q}_20${y}-${mm}-*.log.html | gzip -9 | wc -c >>_out
		qn=`sed 's/<[^>]*>/ /g' ${Q}_20${y}-${mm}-*.log.html |
		    gzip -9 | wc -c`
		mn=`sed 's/<[^>]*>/ /g' ${M}_20${y}-${mm}-*.log.html |
		    gzip -9 | wc -c`
		echo $qn $mn >>_out
		n=`expr $n + 1`
	done
done

if $all; then
	src=_out
else
	src="<sed '\$d' _out"
fi

gnuplot -persist <<EOF
set xtics ($t)
set grid xtics
set title "Traffic on the Qi-Hardware IRC channels"
set xlabel "Month"
set ylabel "Traffic (kbytes gzip'ed)"
plot "$src" using (\$1/1000) with lines title "#qi-hardware" lw 2, \
  "$src" using (\$2/1000) with lines title "#milkymist" lw 2, \
  "$src" using :((\$1+\$2)/1000) with lines title "Both" lw 2
set term png
set output "out.png"
replot
EOF