prompt.zsh

# PROMPT {{{

setopt prompt_subst
setopt prompt_percent
setopt transient_rprompt

color256()
{
    local red=$1; shift
    local green=$2; shift
    local blue=$3; shift

    echo -n $[$red * 36 + $green * 6 + $blue + 16]
}

fg256()
{
    echo -n $'\e[38;5;'$(color256 "$@")"m"
}

bg256()
{
    echo -n $'\e[48;5;'$(color256 "$@")"m"
}

zstyle ':vcs_info:*' max-exports 3
zstyle ':vcs_info:hg:*' get-revision true
zstyle ':vcs_info:hg:*' use-simple true 

autoload -Uz is-at-least
zstyle ':vcs_info:git:*' check-for-changes true
zstyle ':vcs_info:git:*' stagedstr "-" 
zstyle ':vcs_info:git:*' unstagedstr "+" 

zstyle ':vcs_info:git:*' formats '%K{green}%F{black}▶%k%f%%F{white}%K{green} %s %f%k%K{blue}%F{green}▶%k%f%%F{white}%K{blue} %b %f%k%K{black}%F{blue}▶%k%f%%F{white}%K{black} %c%u %f%k'

autoload -Uz vcs_info
prompt_bar_left_self="%{%F{white}%K{blue}%}  %n%{%k%f%}%{%F{white}%K{blue}%}@%{%k%f%}%{%F{white}%K{blue}%}%m %{%k%f%}%{%B%F{blue}%K{blue}%}%{%b%f%k%}%K{cyan}%F{blue}▶%k%f%{%B%F{white}%K{cyan}%}  [%~]  %{%k%f%b%}%{%k%f%}%K{red}%F{cyan}▶%k%f%(?.%F{white}%K{red}%}  COMP  %k%f.%B%K{red}%F{red}%}  ERROR  %b%k%f)%{%K{green}%F{red}▶%k%f%F{white}%K{green}%}  -%h  %{%k%f%}%K{black}%F{green}▶%k%f"

	#TMUX_POWERLINE_SEPARATOR_LEFT_BOLD="◀"
	#TMUX_POWERLINE_SEPARATOR_LEFT_THIN="❮"
	#TMUX_POWERLINE_SEPARATOR_RIGHT_BOLD="▶"
	#TMUX_POWERLINE_SEPARATOR_RIGHT_THIN="❯"

prompt_bar_left="${prompt_bar_left_self} ${prompt_bar_left_status} ${prompt_bar_left_date}"
prompt_left='%{%F{white}%K{black}%}  $SHELL  %{%k%f%}%{%K{white}%F{black}▶%k%f%B%F{black}%K{white}%} %# %{%b%k%f%f%}%K{black}%F{white}▶%k%f  '

count_prompt_characters()
{
    print -n -P -- "$1" | sed -e $'s/\e\[[0-9;]*m//g' | wc -m | sed -e 's/ //g'
}

update_prompt()
{
    local bar_left_length=$(count_prompt_characters "$prompt_bar_left")
    local bar_rest_length=$[COLUMNS - bar_left_length]

    local bar_left="$prompt_bar_left"
    local bar_right_without_path="${prompt_bar_right:s/%d//}"
    local bar_right_without_path_length=$(count_prompt_characters "$bar_right_without_path")
    # local max_path_length=$[bar_rest_length - bar_right_without_path_length]
    bar_right=${prompt_bar_right:s/%d/%(C,%${max_path_length}<...<%d%<<,)/}
    bar_right="%${bar_rest_length}<<${separator}${bar_right}%<<"

    PROMPT="${bar_left}${bar_right}"$'\n'"${prompt_left}"

    RPROMPT="%K{white}%F{black}▶%k%f%{%F{black}%K{white}%} %l  %K{black}%F{white}▶%k%f%{%k%f%}%{%F{white}%K{black}%}  $LANG  %{%k%f%}"

    case "$TERM_PROGRAM" in
        Apple_Terminal)
            RPROMPT="${RPROMPT}"
            ;;
    esac

    LANG=C vcs_info >&/dev/null
    if [ -n "$vcs_info_msg_0_" ]; then
        RPROMPT="${vcs_info_msg_0_}${RPROMPT}"
    fi
}

precmd_functions=($precmd_functions update_prompt)

# }}}