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#!/bin/bash
type git >/dev/null 2>&1 || { printf 'fatal: need git\n'; exit 1; }
type gnuplot >/dev/null 2>&1 || { printf 'fatal: need gnuplot\n'; exit 1; }
[[ $(git diff --stat) != '' ]] && { printf 'fatal: repo is dirty\n'; exit 1; }
versions="$(git tag | tr '\n' ' ')"
#versions="v3.2 v3.3 v3.4 v3.5"
loc_file="locdata"
loc_graph="loc.png"
gnuplot_commands="gnuplotcommands"
cat >$gnuplot_commands <<'EOF'
set title "jgmenu C LOC vs time"
#unset multiplot
set xdata time
set term png
set timefmt "%Y-%m-%d"
set format x "%Y"
set xlabel "Time"
set ylabel "LOC(C)"
set autoscale x
#set xrange ["2015-01-01":"2020-12-31"]
set yrange ["0":"12000"]
#set autoscale y
EOF
printf '%b\n' "set output \"$loc_graph\"" >>$gnuplot_commands
printf '%b\n' "plot \"$loc_file\" using 1:2" >>$gnuplot_commands
trap "rm -f ${loc_file} ${gnuplot_commands}" EXIT
generate_loc_data () {
for v in $versions
do
git checkout $v 2>/dev/null
if [[ -d src/ ]]; then
dir="src/"
else
dir="."
fi
tag_date=$(git log --tags --simplify-by-decoration \
--pretty="format:%ai %d" \
| grep "$v)" \
| awk '{ print $1 }')
tag_loc=$(cloc $dir | grep '^C ' | awk '{ print $5 }')
printf '%b\n' "[$v] $tag_date $tag_loc"
printf '%b\n' "$tag_date $tag_loc" >>$loc_file
done
git checkout master 2>/dev/null
}
generate_loc_data
gnuplot <$gnuplot_commands
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