Display git branch and version in your prompt

git_branch_and_version_in_prompt.sh

# Show current git branch or SVN subfolder in prompt.
GREEN="\[\033[0;32m\]"
LIGHT_GREEN="\[\033[1;32m\]"
GRAY="\[\033[1;30m\]"
LIGHT_BLUE="\[\033[1;34m\]"
LIGHT_GRAY="\[\033[0;37m\]"
COLOR_OFF="\[\e[0m\]"
LAST_GIT_DIR="!"
function prompt_func() {
  PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

  branch_pattern="\* ([^$IFS]*)"
  if [[ $PWD == $LAST_GIT_DIR* ]] || [[ -d "./.git" ]] && [[ "$(git branch --no-color 2> /dev/null)" =~ $branch_pattern ]]; then
    LAST_GIT_DIR="$PWD"
    branch="${BASH_REMATCH[1]}"
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]'
    PS1+=":$GRAY$branch$LIGHT_GRAY@$revision$COLOR_OFF\$ "
  elif [[ -d "./.svn" ]]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]'
    path_pattern="URL: ([^$IFS]*).*Repository Root: ([^$IFS]*).*Revision: ([0-9]*)"
    if [[ "$(svn info 2> /dev/null)" =~ ${path_pattern} ]]; then
      branch=${BASH_REMATCH[1]##`expr ${BASH_REMATCH[2]}`}
      revision="${BASH_REMATCH[3]}"
      PS1+=":$GRAY$branch$LIGHT_GRAY@$revision$COLOR_OFF\$ "
    fi
  fi
}
PROMPT_COMMAND=prompt_func