dplummer.zsh-theme

dplummer.zsh-theme

# vim:ft=zsh ts=2 sw=2 sts=2
#
# dplummer's theme, mostly copied from 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://gist.github.com/1595572).
#
# 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'

# Characters
SEGMENT_SEPARATOR="\ue0b0"
PLUSMINUS="\u00b1"
BRANCH="\ue0a0"
DETACHED="\u27a6"
CROSS="\u2718"
LIGHTNING="\u26a1"
GEAR="\u2699"

# 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 != $CURRENT_BG ]]; then
    print -n " %{$bg%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR%{$fg%} "
  else
    print -n "%{$bg%}%{$fg%} "
  fi
  CURRENT_BG=$1
  [[ -n $3 ]] && print -n $3
}

# End the prompt, closing any open segments
prompt_end() {
  if [[ -n $CURRENT_BG ]]; then
    print -n " %{%k%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR"
  else
    print -n "%{%k%}"
  fi
  print -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 [[ -n "$SSH_CLIENT" ]]; then
    prompt_segment magenta white "%{$fg_bold[white]%(!.%{%F{white}%}.)%}$USER@%m%{$fg_no_bold[white]%}"
  else
    prompt_segment yellow magenta "%{$fg_bold[magenta]%(!.%{%F{magenta}%}.)%}@$USER%{$fg_no_bold[magenta]%}"
  fi
}

# Git: branch/detached head, dirty status
# Git: branch/detached head, dirty status
prompt_git() {
  (( $+commands[git] )) || return
  if [[ "$(git config --get oh-my-zsh.hide-status 2>/dev/null)" = 1 ]]; then
    return
  fi
  local PL_BRANCH_CHAR
  () {
    local LC_ALL="" LC_CTYPE="en_US.UTF-8"
    PL_BRANCH_CHAR=$'\ue0a0'         # 
  }
  local ref dirty mode repo_path

  if $(git rev-parse --is-inside-work-tree >/dev/null 2>&1); then
    repo_path=$(git rev-parse --git-dir 2>/dev/null)
    dirty=$(parse_git_dirty)
    ref=$(git symbolic-ref HEAD 2> /dev/null) || ref="➦ $(git rev-parse --short HEAD 2> /dev/null)"
    if [[ -n $dirty ]]; then
      prompt_segment yellow black
    else
      prompt_segment green $CURRENT_FG
    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:*' unstagedstr '●'
    zstyle ':vcs_info:*' formats ' %u%c'
    zstyle ':vcs_info:*' actionformats ' %u%c'
    vcs_info
    echo -n "${ref/refs\/heads\//$PL_BRANCH_CHAR }${vcs_info_msg_0_%% }${mode}"
  fi
}

prompt_kubectx() {
  kube_context=$(kubectl config view -o=jsonpath='{.current-context}')
  if [[ $kube_context =~ "prod" ]];
  then
    prompt_segment red black "$kube_context"
  else
    prompt_segment blue black "$kube_context"
  fi
}

# Dir: current working directory
prompt_dir() {
  prompt_segment cyan white "%{$fg_bold[white]%}%~%{$fg_no_bold[white]%}"
}

# 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
}

prompt_time() {
  prompt_segment blue white "%{$fg_bold[white]%}%D{%a %e %b - %H:%M}%{$fg_no_bold[white]%}"
}

# Status:
# - was there an error
# - am I root
# - are there background jobs?
prompt_status() {
  local symbols
  symbols=()
  [[ $RETVAL -ne 0 ]] && symbols+="%{%F{red}%}$CROSS"
  [[ $UID -eq 0 ]] && symbols+="%{%F{yellow}%}$LIGHTNING"
  [[ $(jobs -l | wc -l) -gt 0 ]] && symbols+="%{%F{cyan}%}$GEAR"

  [[ -n "$symbols" ]] && prompt_segment black default "$symbols"
}

## Main prompt
build_prompt() {
  RETVAL=$?
  print -n "\n"
  prompt_status
#  prompt_time
  prompt_virtualenv
  prompt_dir
  prompt_git
  prompt_kubectx
  prompt_end
  CURRENT_BG='NONE'
  print -n "\n"
#  prompt_context
  prompt_end
}

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