prompt

# shellcheck shell=bash
# -*- mode: sh; -*-
# vi: set ft=sh :

green='\e[0;32m'
yellow='\e[0;33m'
blue='\e[0;34m'
white='\e[0;37m'
b_yellow='\e[1;33m'
i_red='\e[0;91m'
i_purple='\e[0;95m'

user_style="${b_yellow}";
host_style="${b_yellow}";

_vcprompt_hash() {
  if git-in-repo >/dev/null 2>&1; then
    git rev-parse --short=0 HEAD
  fi
}

_print_if_vcs() {
  if git-in-repo >/dev/null 2>&1; then
    echo "$1"
  fi
}

_git_stats() {
  local _diffs _untracked
  if git-in-repo >/dev/null 2>&1; then
    _diffs=$(git status --porcelain 2>/dev/null | $GREPPAGE "M" | gwc -l)
    _untracked=$(git status --porcelain 2>/dev/null | $GREPPAGE "\?\?" | gwc -l)
    if [[ $_diffs != 0 ]] || [[ $_untracked != 0 ]]; then
      printf ' -> %s:%s' "$_diffs" "$_untracked"
    fi
  fi
}

PS1="\[${user_style}\]\u\[${blue}\]@\[${host_style}\]\h"; # User and host
PS1+="\[${blue}\](\[${yellow}\]\w\[${blue}\])"; # Current working directory
PS1+="\[${green}\]\$(vcprompt -f ' %b')";
PS1+="\[${white}\]\$(_print_if_vcs '|')";
PS1+="\[${i_red}\]\$(_vcprompt_hash)";
PS1+="\[${white}\]\$(_git_stats)";
PS1+="\n\[${i_purple}\]\$\[${white}\] "; # Dollar prompt and command