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#!/usr/bin/env bash
set -o nounset
function usage() {
cat <<EOF
Usage: $0 [-h] [-n] [-s style] [-a name]
Display an activity graph (like the contribution graph on GitHub) for the
current git repository and branch
Available options:
-h, --help Print this help and exit
-n, --no-space Remove spaces between week columns
-s, --style Sets style of the graph: square (default), block, or plus
-a, --author Select for an author (passed to git log)
EOF
}
# Parse options
space=" "
style=square
author=""
while [[ $# -gt 0 ]]; do
case "$1" in
-s|--style)
style="$2"
shift 2
;;
-a|--author)
author="$2"
shift 2
;;
-n|--no-space) space="" ;;
-h|--help)
usage
exit 0
;;
*)
echo "Unexpected option ${1}" >&2
usage
exit 1
;;
esac
shift
done
# Style argument
case "${style}" in
square)
char_full="■"
char_void="${char_full}"
;;
block)
char_full="█"
char_void="${char_full}"
;;
plus)
char_full="✚"
char_void="•"
;;
*)
echo "error: style '${style}' not recognized (square block plus)" >&2;
exit 1;;
esac
# Use GNU date if available
if date --version >/dev/null 2>&1 ; then
function _date { date "$@" ;}
elif gdate >/dev/null 2>&1 ; then
function _date { gdate "$@" ;}
else
echo "You need to install coreutils to run this script (command 'gdate' is not available).";
exit 1;
fi
# Process commits per day
declare -A commits_per_day
commits_max=0
since=$(_date -d "$(_date -d '1 year ago + 1 day' +"%F -%u day")" +"%s")
while read -r commits_n commits_date; do
(( commits_n > commits_max )) && commits_max=$commits_n
date_diff=$(( ($(_date --date="${commits_date} 13:00 UTC" "+%s") - since) / (60*60*24) ))
commits_per_day["${date_diff}"]=$commits_n
done <<< $(git log --author="${author}" --since="${since}" --date=short --pretty=format:'%ad' | uniq -c)
# Print name of months
current_month=$(_date "+%b")
limit_columns=$(( 2 - ${#space} ))
weeks_in_month=$(( limit_columns + 1 ))
printf "\e[m "
for week_n in $(seq 0 52); do
month_week=$(_date -d "1 year ago + ${week_n} weeks" "+%b")
if [[ "${current_month}" != "${month_week}" ]]; then
current_month=$month_week
weeks_in_month=0
printf "%-3s%s" "${current_month:0:3}" "$space"
elif [[ $weeks_in_month -gt $limit_columns ]]; then
printf " %s" "$space"
fi
weeks_in_month=$(( weeks_in_month + 1 ))
done
printf "\n"
# Print activity
last_day=$(( ($(_date "+%s") - since) / (60*60*24) ))
name_of_days=("" "Mon" "" "Wed" "" "Fri" "" "")
for day_n in $(seq 0 6); do
printf '\e[m%-4s' "${name_of_days[day_n]}"
for week_n in $(seq 0 52); do
key=$(( week_n * 7 + day_n ))
if [[ -v commits_per_day["${key}"] ]]; then
value=$(( ${commits_per_day["${key}"]}00 / commits_max))
if (( value <= 25 )); then
# Low activity
printf "\x1b[38;5;22m%s%s" "$char_full" "$space"
elif (( value <= 50 )); then
# Mid-low activity
printf "\x1b[38;5;28m%s%s" "$char_full" "$space"
elif (( value <= 75 )); then
# Mid-high activity
printf "\x1b[38;5;34m%s%s" "$char_full" "$space"
else
# High activity
printf "\x1b[38;5;40m%s%s" "$char_full" "$space"
fi
elif [ $key -lt $last_day ]; then
# No activity
printf "\x1b[38;5;250m%s%s" "$char_void" "$space"
fi
done
printf "\n"
done
printf "\n"
# Print legend
printf "\e[m Less "
printf "\x1b[38;5;250m%s " "$char_void"
printf "\x1b[38;5;22m%s " "$char_full"
printf "\x1b[38;5;28m%s " "$char_full"
printf "\x1b[38;5;34m%s " "$char_full"
printf "\x1b[38;5;40m%s " "$char_full"
printf "\e[mMore"
printf "\n"
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