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#!/bin/bash

# bash-git-prompt version #VERSION#

[[ "$TERM" = *color ]] && mitFarbe=true || mitFarbe=false

[ -z "$PS1Start" ] && [ -z "$PS1Ende" ] &&
  if echo "$PS1" | grep -q "\S"
  then
    PS1Ende="$(echo "$PS1" | sed 's|^.*[^\]\(\\\?[$#>]\s*\([]\\[0-9m]\)*\s*\)$|\1|')"
    PS1Start="$(echo "$PS1" | sed 's|\\\?[$#>]\s*\([]\\[0-9m]\)*\s*$||')"
  else
    PS1Ende=""
    PS1Start="$PS1"
  fi

PS1="$PS1Start"

if status=$(git status --porcelain 2> /dev/null)
then
  PS1="$PS1 "
  branch="$(git symbolic-ref HEAD 2> /dev/null | sed "s|^.*/||")"
  echo "$status" | grep -q "^.\S" && wtClean=false || wtClean=true
  echo "$status" | grep -q "^\S" && idxClean=false || idxClean=true

  [ $(git show-ref HEAD "${branch}" --head -s | \
        uniq | \
        wc -l
    ) -eq 1 ] && \
    remClean=true || \
    remClean=false

  if $mitFarbe
  then
    if ! $wtClean
    then
      PS1="$PS1\[\033[01;31m\]"
    elif ! $idxClean
    then
      PS1="$PS1\[\033[01;33m\]"
    elif ! $remClean
    then
      PS1="$PS1\[\033[01;34m\]"
    else
      PS1="$PS1\[\033[01;32m\]"
    fi
  fi
  PS1="$PS1$branch"
  if $mitFarbe
  then
    PS1="$PS1\[\033[00m\]"
  else
    if ! $wtClean
    then
      PS1="$PS1!"
    elif ! $idxClean
    then
      PS1="$PS1+"
    elif ! $remClean
    then
      PS1="$PS1^"
    fi
  fi
fi

PS1="$PS1$PS1Ende"