bash git prompt

bash-prompt

# I wanted a dead simple reminder if I'm in a git managed directory
# This takes the standard ubuntu $PS1 and adds (branch-name) in "default" terminal colour just before your $ / #
#
# the correct way on centos is to add it to something like /etc/sysconfig/bash-prompt-{xterm,default,screen}
# I can't be arsenaled...  -david@starkers.org
#
# centos6:       add to /etc/bashrc
# ubuntu14/mint: add to /etc/bash.bashrc

# vim:ts=2:sw=2


simple_gitprompt(){
  #update titles on terminals (putty/terminator etc..)
  [[ "${TERM}" != 'linux' ]] && printf "\033]0;%s\007" "$HOSTNAME:$PWD"

  # Only run this if we are within a git directory
  git_status="$(git status --short --untracked=normal 2>/dev/null)"
  if [ X$? == X0 ]; then

      gitsym="$(git symbolic-ref HEAD)"
      branch="${gitsym##refs/heads/}"

      if ((UID != 0)); then
        export PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \[\033[00m\]($branch)\[\033[01;34m\] \$\[\033[00m\] '  # no root, git
      else
        export PS1='\[\033[01;31m\]\h\[\033[01;34m\] \W \[\033[00m\]($branch)\[\033[01;34m\] \$\[\033[00m\] '  # root, git
      fi
    else
      if ((UID != 0)); then
        export PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] '  # no root, no git
      else
        export PS1='\[\033[01;31m\]\h\[\033[01;34m\] \W \$\[\033[00m\] '   # root, no git
      fi
  fi
}
#only run if interactive shell
if [ "$PS1" ] ; then
  PROMPT_COMMAND='simple_gitprompt'
fi