#!/usr/bin/env bash
# Script to fetch commit messages and display the category frequencies.
# Example:
#   047c36c [Meta] Added README.
#   5b16912 [Init] Added scripts.
#
# Will output:
#   Meta: 1
#   Init: 1
#
# Authored by:
#   Dmytro Meleshko <dmytro.meleshko@gmail.com>

git log --format='%s' | gawk '
  match($0, /^\s*\[([^\]]+)\]/, groups) {
    stats[groups[1]] += 1
  }
  END {
    for (key in stats) {
      print stats[key] "\t" key
    }
  }
' | sort --key=1 --numeric-sort | column -t -s $'\t'

# Hellish abonation {{{
  # Authored by:
  #   Mijyuoon: <mijuoon@gmail.com>

  # data=$(git log --oneline | awk -F '[][]' '{for (i=2; i<=NF; i+=2) {printf "%s ", $i}; print ""}')
  # keys=$(echo "$data" | sort -u | uniq)
  #
  # for type in $data; do
  #   eval "count_$type="'$'"((count_$type+1))"
  # done
  #
  # for type in $keys; do
  #   echo "$type: $(eval "echo "'$'"count_$type")"
  # done
# }}}