git-cdd-aim

#!/usr/bin/env sh

. cdd-shared

usage() {
  echo "git cdd aim"
  echo " "
  echo "Setup a commit message."
  echo " "
  echo "options:"
  echo "-m, --message <message>"
  echo "    commit message"
}

further_usage() {
  if [ -n "$1" ]; then
      echo "Commit started:"
      echo "\"$1\""
      echo "Next steps:"
      echo " "
  fi
  echo "  amend   Change commit message prior to committing changes."
  echo "  fire    Commit changes with the current message."
  echo "  forget  Remove commit message."
}

cmd_aim() {
  if [ -e "$CDD_COMMIT_MSG" ]; then
    echo "A previous commit message exist."
    echo " "
    further_usage ""
    echo " "
    echo "Or manually delete $CDD_COMMIT_MSG"
    exit 1
  fi

  if [ "$#" -lt 1 ]; then
      open_editor; exit 0
  fi

  flag="$1"; shift
  case $flag in
    "-m"|"--message")
      if [ -z "$1" ]; then
          open_editor; exit 0
      fi
      write_message "$1"; exit 0
      ;;
    *)
      usage; exit 1
      ;;
  esac
}

open_editor() {
  touch "$CDD_COMMIT_MSG"
  printf "\n\n# If applied, this commit will…" > "$CDD_COMMIT_MSG"

  export editor
  get_editor
  "$editor" "$CDD_COMMIT_MSG"
  if [ ! -s "$CDD_COMMIT_MSG" ]; then
      rm "$CDD_COMMIT_MSG"
      echo " "
      echo "Please add a commit message to start with."
      echo " "
      exit 1
  fi
  unset editor

  further_usage "$(grep "^[^#]" "$CDD_COMMIT_MSG")"
}

write_message() {
  if [ "$#" -lt 1 ] || [ -z "$1" ]; then
      cmd_aim "$@"; exit 0
  fi

  touch "$CDD_COMMIT_MSG"
  echo "$1" > "$CDD_COMMIT_MSG"
  further_usage "$1"
  exit 0
}