linesPerCommitPlot.sh

#!/bin/bash
# Marios Andreopoulos, 2015

# A very simple bash script that goes into a git directory, counts lines of code
# for a certain language and each commit and creates a plot.

# $1 is path to git repository, $2 is language name as supported by cloc (e.g Go, Bourne Shell)
# bash linesPerCommitPlot.sh my-repo Go
# NEVER run it in your work directory. Make a temporary clone and use it there.

CURRENT="$(pwd)"
echo "files,language,blank,comment,code" > lineCommit-stats.csv

pushd $1

for i in $(git rev-list --reverse HEAD); do
    git checkout $i --
    cloc --csv --include-lang=$2 --quiet . | tail -n1 >> "$CURRENT"/lineCommit-stats.csv
done

REPO="$(basename $(pwd))"

popd

cat <<EOF | gnuplot
set terminal pdf size 8, 5  color enh
set output "$REPO-lines-stats.pdf"
set datafile separator ","
set xlabel 'commit'

set ylabel 'lines (#)'
set y2label 'files (#)'

set title "$REPO — $2 lines per commit"

set grid ytics
show grid

set xrange [1:*]
show xrange
#set autoscale xmax xfixmin

set yrange [0:]
set ytics nomirror
set y2tics
set y2range [0:]

set style line 1 lt 1 lw 3 pt 7 pi 0 ps 0.6
set pointintervalbox 1.5

set key left top
set key invert

set boxwidth 0.5 relative
set style fill solid

plot  'lineCommit-stats.csv' u (\$0+1):1 ti col with boxes axes x1y2 lc rgb "#E0F8F7",\
      '' u (\$0+1):3 ti col with linespoints ls 1 lc rgb "gray75",\
      '' u (\$0+1):4 ti col  with linespoints ls 1 lc rgb "#FE642E",\
      '' u (\$0+1):5 ti col with linespoints ls 1 lc rgb "#74DF00"
EOF

rm -f lineCommit-stats.csv