allanmacgregor.zsh-theme

# 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=''
LEFT_SEGMENT_SEPARATOR=''
RIGHT_SEGMENT_SEPARATOR=''

# Load the Functions file
if [ -e ~/.zsh_files/theme_icons.zsh ]; then
     source ~/.zsh_files/theme_icons.zsh
fi 

# Load the Functions file
if [ -e ~/.zsh_files/git_prompt.zsh ]; then
     source ~/.zsh_files/git_prompt.zsh
fi 
# 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
}

prompt_right_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{$CURRENT_BG}%}$RIGHT_SEGMENT_SEPARATOR%{$fg%} "
  else
    echo -n "%{$bg%}%{$fg%} "
  fi
  CURRENT_BG=$1
  [[ -n $3 ]] && echo -n $3
}

get_short_path() {
  HOME_TILDE=~
  LONG_PATH=`pwd`
  if [[ $LONG_PATH == $HOME_TILDE ]]; then
    LONG_PATH="~"
  fi

  # check to see if the prompt path length has been specified
  if [ ! -n "$PWD_LENGTH" ]; then
    export PWD_LENGTH=15
  fi

    if [ ${#LONG_PATH} -gt $PWD_LENGTH ]; then
            echo "...${LONG_PATH: -$PWD_LENGTH}"
    else
            echo $LONG_PATH
    fi
}

# 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=''
}

# End the prompt, closing any open segments
prompt_right_end() {
  if [[ -n $CURRENT_BG ]]; then
    echo -n " %{%k%F{$CURRENT_BG}%}"
  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 "${icons[VCS_GIT_ICON]}${icons[LEFT_SUBSEGMENT_SEPARATOR]} ${ref/refs\/heads\// }${vcs_info_msg_0_%% }${mode}"
    echo -n "${ref/refs\/heads\//}${vcs_info_msg_0_%% }${mode}"
  fi
}

prompt_git_status() {
  precmd_update_git_vars
  if [ -n "$__CURRENT_GIT_STATUS" ]; then
    # Show the git Icon indicator
    prompt_segment 255 black "${icons[VCS_GIT_ICON]}"
    if [ "$GIT_CHANGED" -ne "0" ]; then
      prompt_segment yellow 255 "${icons[VCS_CHANGED_ICON]} $GIT_CHANGED"
    fi
    if [ "$GIT_AHEAD" -ne "0" ]; then
      prompt_segment 027 255 "${icons[VCS_OUTGOING_CHANGES_ICON]}$GIT_AHEAD"
    fi
    if [ "$GIT_BEHIND" -ne "0" ]; then
      prompt_segment magenta 255 "${icons[VCS_INCOMING_CHANGES_ICON]}$GIT_BEHIND"
    fi
    if [ "$GIT_STAGED" -ne "0" ]; then
      prompt_segment green 255 "${icons[VCS_STAGED_ICON]} $GIT_STAGED"
    fi
    if [ "$GIT_UNTRACKED" -ne "0" ]; then
      prompt_segment 009 255 "${icons[VCS_UNTRACKED_ICON]} $GIT_UNTRACKED"
    fi
  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 "`get_short_path`"
  #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
}

# Virtualenv: current working virtualenv
prompt_pyenv() {
 if [ -f "$PWD/.python-version" ]; then
   prompt_segment 098 white "`echo ${icons[ELIXIR_ICON]} $version_pyenv test`"
 fi
}

prompt_elixir() {
 if [ -f "$PWD/mix.exs" ]; then
   prompt_segment 098 white "`echo ${icons[ELIXIR_ICON]} $ELIXIR_VERSION`"
 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"
}

prompt_elixir() {
 if [ -f "$PWD/mix.exs" ]; then
   prompt_segment 098 white "`echo ${icons[ELIXIR_ICON]} $ELIXIR_VERSION`"
 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_virtualenv
  prompt_dir
  prompt_git
  prompt_hg
  prompt_end
}

build_right_prompt() {
  prompt_git_status
  prompt_elixir
  prompt_status
  #prompt_context
  prompt_right_end
}

PROMPT='%{%f%b%k%}$(build_prompt) '
RPROMPT='%{%f%b%k%}$(build_right_prompt)'