git-unpushed

#!/usr/bin/env bash
#
# Show unpushed work.
#
# Usage:
#   List unpushed commits:
#     git unpushed
#
#   Show unpushed changes:
#     git unpushed -d

usage() {
  cat <<- EOF
usage: git unpushed [<options>]

  Show unpushed work

If no options are given, unpushed commit logs are shown.

  -d, --diff        View the changes made relative to HEAD
EOF
}

main() {
  if [[ $# -gt 1 ]]; then
    usage
    exit 1
  fi

  current_branch="$(git current-branch)"

  if [[ "$1" == '-h' ]]; then
    usage

  elif [[ "$1" == '-d' || "$1" == '--diff' ]]; then
    git diff origin/"$current_branch"..HEAD

  elif [[ $# -eq 0 ]]; then
    git log --stat origin/"$current_branch"..HEAD

  else
    echo "fatal: unrecognized argument: $1. See 'git help unpushed'."
    exit 1
  fi
}

main "$@"