git-brief

#!/bin/zsh
# vim:ft=zsh
#
# git-st - Enhanced git status with numbered file shortcuts
#
# Processes 'git status --porcelain', and exports numbered env variables that contain 
# the path of each affected file. Integrates with scmpuff if available.
#
# see https://github.com/mroth/scmpuff
#================================================== 
#
show_help() {
  printf -- "
git-st - Enhanced git status command

Usage: git st [OPTIONS]

Options:
  -h,     Show this help message

Description:
  Enhanced git status. One-line status for each file with lines added and removed.
  The Original version by https://www.reddit.com/user/ex1c

Examples:
  git st          # Show status
"
    exit 0
}

check_git_status() {
  local IFS
  local git_status
  git_status=("${(@f)$(git -c color.status=always status -sb)}")

  if [[ $? -ne 0 ]]; then
    return 1
  fi

  local diff
  diff=("${(@f)$(git diff --color --stat HEAD 2>/dev/null | sed '$d; s/^ //' | cut -d '|' -f 2)}")

  local len=-1
  for ((i=1; i<${#git_status[@]}; i++)); do
    if (( ${#git_status[i]} > len )); then
      len=${#git_status[i]}
    fi
  done
  (( len *= -1 ))

  for ((i=0; i<${#git_status[@]}; i++)); do
    local currStatus="${git_status[i]}"
    if (( i == 0 )); then
      echo "${git_status[0]}" | cut -d ' ' -f 2-
    else
      local currDiff=""
      if [[ -n "${diff[i-1]}" ]]; then
        currDiff="|${diff[i-1]}"
      fi
      printf "%*s  %s\n" $len "${currStatus}" "${currDiff}"
    fi
  done

  if (( ${#git_status[@]} - 1 == 0 )); then
    git -c color.status=always status -b
  fi
}

main() {
    case "$1" in
        -h|--help)
            show_help
            ;;
        *)
            check_git_status "$@"
            ;;
    esac
}

main "$@"