Reduce further

[rbdr/dotfiles] / zsh / modules / prompt.zsh

autoload -Uz promptinit && promptinit

function tool_versions() {
  if [[ -s ".tool-versions" ]]; then
	echo '.tool-versions'
	return
  fi
  echo "${HOME}/.tool-versions"
}

if [[ "$TERM" == (dumb|linux|*bsd*) ]] || (( $#prompt_argv < 1 )); then
  prompt 'off'
fi

#
# Functions
#

function env_info_provider() { echo "%{%F{green}%}n/a"; }
function env_info {
  echo "[%{%F{cyan}%}ENV%{%F{black}%} $(env_info_provider)%{%F{black}%}]"
}

function python_info {
  pythoninfo=`cat "$(tool_versions)" | rg python | cut -d ' ' -f 2`
  pythoninfo=${ASDF_PYTHON_VERSION:-$pythoninfo}
  venv="${VIRTUAL_ENV##*/}"
  echo "%{%F{green}%}py%{%F{black}%} ${pythoninfo:-no}@${venv:-default}"
}

function rust_info {
  rustinfo=`cat "$(tool_versions)" | rg rust | cut -d ' ' -f 2`
  rustinfo=${ASDF_RUST_VERSION:-$rustinfo}
  echo "%{%F{red}%}rs%{%F{black}%} ${rustinfo:-no}"
}

function node_info {
  nodeinfo=`cat "$(tool_versions)" | rg nodejs | cut -d ' ' -f 2`
  nodeinfo=${ASDF_NODEJS_VERSION:-$nodeinfo}
  echo "%{%F{yellow}%}js%{%F{black}%} ${nodeinfo:-no}"
}

function git_info {
  branch=$(git branch --show-current 2> /dev/null)

  if [ ! -z $branch ]; then
    echo -n "@%F{cyan}$branch%f"

    status_output=$(git status --short)

    if echo "$status_output" | grep -q '^??'; then
      echo -n "%{%F{magenta}%}?%f"
    fi

    if echo "$status_output" | grep -q '^ M'; then
      echo -n "%{%F{magenta}%}!%f"
    fi

    if echo "$status_output" | grep -q '^ D'; then
      echo -n "%{%F{magenta}%}×%f"
    fi

    if echo "$status_output" | grep -q '^A '; then
      echo -n "%{%F{green}%}+%f"
    fi
  fi
}

function box_name {
    [ -f ~/.box-name ] && cat ~/.box-name || hostname -s
}

#
# ZLE widgets
#

function zle-line-init zle-keymap-select {

    # Couldn't figure out how to get tmux and iTerm to agree on how to render
    # these characters... so there you go.

    local normal_symbol="N"
    local insert_symbol="I"
    local error_symbol="X"

    # Show vi status / return status on the right side

    local return_status="%{%F{red}%}%(?.. $error_symbol)%{$reset_color%}"
    if [ $KEYMAP = 'vicmd' ]; then
      local edit_status="%{%F{cyan}%}$normal_symbol"
    else
      local edit_status="%{%F{green}%}$insert_symbol"
    fi

    RPROMPT="${edit_status}${return_status}%{$reset_color%}"
    zle reset-prompt
}
zle -N zle-line-init
zle -N zle-keymap-select

#
# Setup Prompt
#

function prompt_setup {
  setopt LOCAL_OPTIONS
  unsetopt XTRACE KSH_ARRAYS
  prompt_opts=(cr percent subst)

  # Load required functions.
  autoload -Uz add-zsh-hook

  # Define prompts.
  PROMPT='
%{%F{black}%}$(env_info) $(node_info) $(rust_info) $(python_info)
%{%F{magenta}%}%n%{%f%}@%{%F{yellow}%}$(box_name)%{%f%} %{%B%F{green}%}${PWD/#$HOME/~}%{%f%b%}$(git_info)%{%f%}
%(?,,%{${%B%F{white}%}[%?]%{%f%b%} )%% '
}

prompt_setup "$@"
setopt PROMPT_SUBST
setopt PROMPT_PERCENT
setopt TRANSIENT_RPROMPT