config/bash/super_prompt.sh

# Produces a nice, colorful 2-line prompt of the form:
# [username@hostname:current_directory] (git_repo|branch)
# $

src_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source $src_dir/colorize.sh

function sp_git_info {
  # Get the current branch name
  local git_branch=$(git branch 2>/dev/null | grep "*" | cut -d ' ' -f 2) || ""

  # If we're in a git repo, add the repo (i.e. top-level directory) name, parens, and a newline
  if [ "$git_branch" != "" ]; then
    local git_repo=$(git rev-parse --show-toplevel)
    git_branch=\($(colorize magenta ${git_repo//*\/})"|"$(colorize magenta ${git_branch})\)
    printf "%s\n" "$git_branch"
  else
    printf ""
  fi
}

function sp_path {
  local git_dir=$(git rev-parse --show-toplevel 2>/dev/null)
  if [ "$git_dir" != "" ]; then
    local path=$(colorize green ${PWD//$git_dir/\!})
  else
    local path=$(colorize green ${PWD//$HOME/\~})
  fi

  printf $path
}

function super_prompt {  
  local user=$(colorize yellow $(whoami))
  local host=$(colorize blue ${HOSTNAME})
  local prompt_char=$(colorize red '$')

  sp_git_info
  printf "[%s@%s:%s]\n%s " "$user" "$host" "$(sp_path)" "$prompt_char"
}

export PS1="\$(super_prompt)"