#!/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>
#
# this is version 2 of the script from 2008-07-01

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


hg clone http://www.suckless.org/hg.rc/dwm "$tmprepo" >/dev/null
cd "$tmprepo"
rm -f "../$slocdata"

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

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


gnuplot <<EOF
set title 'dwm lines of code'
set xrange [0:$tip]
set xlabel 'revision'
set x2label 'version'
set ylabel 'SLOC'

set x2tics rotate ( "0.0" 0 `hg tags | awk '{sub(/:.*$/, "", $2) ; printf(", \"%s\" %d ", $1,  $2) }'` )

set terminal png
set output "../$output"

plot '../$slocdata' using 1:2 with points title "", 2000 with dots title ""
EOF

cd - >/dev/null
rm -r "$tmprepo"