basic git prompt

.git_bash_prompt.sh

# Bash PS1 for Git repositories showing branch and relative path inside 
# the Repository

# Reset
RESET="\[\033[0m\]"

# Regular Colors
BLACK="\[\033[0;30m\]"
RED="\[\033[0;31m\]"
GREEN="\[\033[0;32m\]"
YELLOW="\[\033[0;33m\]"
BLUE="\[\033[0;34m\]"
PURPLE="\[\033[0;35m\]"
CYAN="\[\033[0;36m\]"
WHITE="\[\033[0;37m\]"

# PS1 Prompt variables
USER="\u"
HOST="\h"
TIME12H="\T"
TIME12A="\@"
PATHSHORT="\W"
PATHFULL="\w"
NEWLINE="\n"
JOBS="\j"

__git_relative_dir() {
  local dirname
  if [ -d .git ]; then
    dirname=""
  else
    dirname=" $(git rev-parse --show-prefix)"
  fi
  echo "$dirname"
}

# This function generates the prompt, depending on Git's status...
function __git_prompt()
{
  local pre_prompt="${GREEN}${USER}${RESET}${CYAN}@${HOST}${RESET}"

  git branch &>/dev/null
  if [ "$?" -eq "0" ]; then
    local git_prompt="$(__git_ps1 ' (%s)')"
    local post_prompt="$(__git_relative_dir) \$ "
    PS1="$pre_prompt${GREEN}$git_prompt${RESET}${PATHFULL}\$ "
  # @2 - Prompt when not in GIT repo
  else
    PS1="$pre_prompt ${PATHFULL}${RESET}\$ "; \
  fi
}

PROMPT_COMMAND=__git_prompt