# vim:ft=zsh ts=2 sw=2 sts=2
  #
  # agnoster's Theme - https://gist.github.com/3712874
  # A Powerline-inspired theme for ZSH
  #
  # # README
  #
  # In order for this theme to render correctly, you will need a
  # [Powerline-patched font](https://github.com/Lokaltog/powerline-fonts).
  #
  # In addition, I recommend the
  # [Solarized theme](https://github.com/altercation/solarized/) and, if you're
  # using it on Mac OS X, [iTerm 2](http://www.iterm2.com/) over Terminal.app -
  # it has significantly better color fidelity.
  #
  # # Goals
  #
  # The aim of this theme is to only show you *relevant* information. Like most
  # prompts, it will only show git information when in a git working directory.
  # However, it goes a step further: everything from the current user and
  # hostname to whether the last call exited with an error to whether background
  # jobs are running in this shell will all be displayed automatically when
  # appropriate.
  
  ### Segment drawing
  # A few utility functions to make it easy and re-usable to draw segmented prompts
  
  CURRENT_BG='NONE'
  SEGMENT_SEPARATOR=''
  
  # Begin a segment
  # Takes two arguments, background and foreground. Both can be omitted,
  # rendering default background/foreground.
  prompt_segment() {
    local bg fg
    [[ -n $1 ]] && bg="%K{$1}" || bg="%k"
    [[ -n $2 ]] && fg="%F{$2}" || fg="%f"
    if [[ $CURRENT_BG != 'NONE' && $1 != $CURRENT_BG ]]; then
      echo -n " %{$bg%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR%{$fg%} "
    else
      echo -n "%{$bg%}%{$fg%} "
    fi
    CURRENT_BG=$1
    [[ -n $3 ]] && echo -n $3
  }
  
  # End the prompt, closing any open segments
  prompt_end() {
    if [[ -n $CURRENT_BG ]]; then
      echo -n " %{%k%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR"
    else
      echo -n "%{%k%}"
    fi
    echo -n "%{%f%}"
    CURRENT_BG=''
  }
  
  ### Prompt components
  # Each component will draw itself, and hide itself if no information needs to be shown
  
  # Context: user@hostname (who am I and where am I)
  prompt_context() {
    if [[ "$USER" != "$DEFAULT_USER" || -n "$SSH_CLIENT" ]]; then
      prompt_segment black default "%(!.%{%F{yellow}%}.)$USER@%m"
    fi
  }
  
  # Git: branch/detached head, dirty status
  prompt_git() {
    local ref dirty mode repo_path
    repo_path=$(git rev-parse --git-dir 2>/dev/null)
  
    if $(git rev-parse --is-inside-work-tree >/dev/null 2>&1); then
      dirty=$(parse_git_dirty)
      ref=$(git symbolic-ref HEAD 2> /dev/null) || ref="➦ $(git show-ref --head -s --abbrev |head -n1 2> /dev/null)"
      if [[ -n $dirty ]]; then
        prompt_segment yellow black
      else
        prompt_segment green black
      fi
  
      if [[ -e "${repo_path}/BISECT_LOG" ]]; then
        mode=" <B>"
      elif [[ -e "${repo_path}/MERGE_HEAD" ]]; then
        mode=" >M<"
      elif [[ -e "${repo_path}/rebase" || -e "${repo_path}/rebase-apply" || -e "${repo_path}/rebase-merge" || -e "${repo_path}/../.dotest" ]]; then
        mode=" >R>"
      fi
  
      setopt promptsubst
      autoload -Uz vcs_info
  
      zstyle ':vcs_info:*' enable git
      zstyle ':vcs_info:*' get-revision true
      zstyle ':vcs_info:*' check-for-changes true
      zstyle ':vcs_info:*' stagedstr '✚'
      zstyle ':vcs_info:git:*' unstagedstr '●'
      zstyle ':vcs_info:*' formats ' %u%c'
      zstyle ':vcs_info:*' actionformats ' %u%c'
      vcs_info
      echo -n "${ref/refs\/heads\// }${vcs_info_msg_0_%% }${mode}"
    fi
  }
  
  prompt_hg() {
    local rev status
    if $(hg id >/dev/null 2>&1); then
      if $(hg prompt >/dev/null 2>&1); then
        if [[ $(hg prompt "{status|unknown}") = "?" ]]; then
          # if files are not added
          prompt_segment red white
          st='±'
        elif [[ -n $(hg prompt "{status|modified}") ]]; then
          # if any modification
          prompt_segment yellow black
          st='±'
        else
          # if working copy is clean
          prompt_segment green black
        fi
        echo -n $(hg prompt "☿ {rev}@{branch}") $st
      else
        st=""
        rev=$(hg id -n 2>/dev/null | sed 's/[^-0-9]//g')
        branch=$(hg id -b 2>/dev/null)
        if `hg st | grep -q "^\?"`; then
          prompt_segment red black
          st='±'
        elif `hg st | grep -q "^(M|A)"`; then
          prompt_segment yellow black
          st='±'
        else
          prompt_segment green black
        fi
        echo -n "☿ $rev@$branch" $st
      fi
    fi
  }
  
  # Dir: current working directory
  prompt_dir() {
    prompt_segment blue black '%~'
  }
  
  # Virtualenv: current working virtualenv
  prompt_virtualenv() {
    local virtualenv_path="$VIRTUAL_ENV"
    if [[ -n $virtualenv_path && -n $VIRTUAL_ENV_DISABLE_PROMPT ]]; then
      prompt_segment blue black "(`basename $virtualenv_path`)"
    fi
  }
  
  # Status:
  # - was there an error
  # - am I root
  # - are there background jobs?
  prompt_status() {
    local symbols
    symbols=()
    [[ $RETVAL -ne 0 ]] && symbols+="%{%F{red}%}✘"
    [[ $UID -eq 0 ]] && symbols+="%{%F{yellow}%}⚡"
    [[ $(jobs -l | wc -l) -gt 0 ]] && symbols+="%{%F{cyan}%}⚙"
  
    [[ -n "$symbols" ]] && prompt_segment black default "$symbols"
  }
  
  ## Main prompt
  build_prompt() {
    RETVAL=$?
    prompt_status
    prompt_virtualenv
    prompt_context
    prompt_dir
    prompt_git
    prompt_hg
    prompt_end
  }
  
  PROMPT='%{%f%b%k%}$(build_prompt) '