pre-commit.sh

#!/usr/bin/env bash
cd $(dirname $0)
root_path=$(dirname $(dirname $(pwd -P)))
main_re="#[[:space:]]+TODO[[:space:]]+\[[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}\]"
date_re="[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}"
today=$(date +%s)
search_path=$root_path
OIFS=$IFS
found_expired=

get_format() {
    date_str=$1
    if [[ $(uname | grep -i linux) ]]
    then
        echo "-d $date_str"
    else
        vars=($(echo $date_str | sed -e "s/-/ /g"))
        echo "-v${vars[0]}y -v${vars[1]}m -v${vars[2]}d"
    fi
}


echo "Checking all files for due todos in $search_path"
for file in $(find $search_path -iname *.py 2>/dev/null)
do
  export IFS=$'\n'
  found_for_file=
  for line in $(grep -Ei "$main_re" $file 2>/dev/null)
  do
    expired_lines=()
    exp_str=$(echo $line | grep -Eio "$date_re")
    expiry=$(date $(get_format $exp_str) +%s)
    if [[ $today -ge $expiry ]]
    then
      if [[ -z $found_for_file ]]
      then
        found_for_file=true  
        echo "------------------------------------"
        echo "$file"	
      fi	      
      echo $line
      found_expired=true
    fi
  done
  if [[ ! -z $found_for_file ]]
  then
    echo
  fi
  export IFS=$OIFS
done

if [[ ! -z $found_expired ]]
then
  echo "Found expired todo comments, exit code 1"
  exit 1
fi