#!/bin/sh
#
# creates a graph with the SLOC of dwm through the time
# output is generated in the current directory
# requires: mercurial, sloccount, gnuplot
#
# markus schnalke <meillo@marmaro.de>

tmprepo=dwm-sloccount-$$
slocdata=dwm-sloccount-data-$$
output=dwm-sloccount.png


hg clone http://www.suckless.org/hg.rc/dwm "$tmprepo"
cd "$tmprepo"

tip=`hg tip | grep changeset | cut -d ":" -f 2`

rm "$slocdata"
for i in `seq $tip -1 1` ; do
	hg strip $i 2>/dev/null
	sloc=`sloccount . | awk '/^ansic/{print $2}'`
	echo $i $sloc >> "$slocdata"
done

gnuplot <<EOF
set title 'dwm lines of code'

set xrange [1:$tip]
set xlabel 'revision'

set yrange [0:2000]
set ylabel 'SLOC'


set terminal png
set output "$output"

plot '$slocdata' using 1:2 with points title ""
EOF

rm -r "$tmprepo"