gist_stats.sh

#!/usr/bin/env bash

weeks=90

echo "all"
echo "java"
echo "groovy"
echo "js"
echo "specs"

echo "all;java;groovy;js;spec"
for i in $(seq 1 $weeks)}
do
    read all <<< `git log --numstat --pretty="%H" --since="${i} weeks ago" --until="$((i - 1)) weeks ago"  | awk 'NF==3 {if ( match($3, /.*/) ) { plus+=$1 } } END {printf("%d\n", plus)}'`

    read java <<< `git log --numstat --pretty="%H" --since="${i} weeks ago" --until="$((i - 1)) weeks ago"  | awk 'NF==3 {if ( match($3, /\.java/) ) { plus+=$1 } } END {printf("%d\n", plus)}'`
    read groovy <<< `git log --numstat --pretty="%H" --since="${i} weeks ago" --until="$((i - 1)) weeks ago"  | awk 'NF==3 {if ( match($3, /\.groovy$/) ) { plus+=$1 } } END {printf("%d\n", plus)}'`

    read js <<< `git log --numstat --pretty="%H" --since="${i} weeks ago" --until="$((i - 1)) weeks ago"  | awk 'NF==3 {if ( match($3, /.js$/) && ! match($3, /spec\.js$/) ) { plus+=$1 } } END {printf("%d\n", plus)}'`
    read spec <<< `git log --numstat --pretty="%H" --since="${i} weeks ago" --until="$((i - 1)) weeks ago"  | awk 'NF==3 {if ( match($3, /(spec.coffee|spec.js)$/) ) { plus+=$1 } } END {printf("%d\n", plus)}'`

    echo "$all;$java;$groovy;$js;$spec"
done