zshrc/prompt

# @author     Sebastian Tramp <mail@sebastian.tramp.name>
# @license    http://opensource.org/licenses/gpl-license.php
#
# the prompt definition
#

#on#### http://aperiodic.net/phil/prompt/
function precmd {
    local TERMWIDTH
    (( TERMWIDTH = ${COLUMNS} - 1 ))

    ###
    # Truncate the path if it's too long.
    
    PR_FILLBAR=""
    PR_PWDLEN=""
    
    local promptsize=${#${(%):---(%n@%m:%l)---()--}}
    local pwdsize=${#${(%):-%~}}
    
    if [[ "$promptsize + $pwdsize" -gt $TERMWIDTH ]]; then
        ((PR_PWDLEN=$TERMWIDTH - $promptsize))
    else
        PR_FILLBAR="\${(l.(($TERMWIDTH - ($promptsize + $pwdsize)))..${PR_HBAR}.)}"
    fi

    ###
    # Get APM info.

#    if which ibam > /dev/null; then
#    PR_APM_RESULT=`ibam --percentbattery`
#    elif which apm > /dev/null; then
#    PR_APM_RESULT=`apm`
#    fi

    ###
    # Get Mercurial info
    PR_HG_BRANCH=`hg branch 2>/dev/null`
    if [ "$?" != "255" ]; then
	#tmuxhglog
        PR_HG_CHANGECOUNTER=`hg st 2>/dev/null | wc -l`
        if [ "$PR_HG_CHANGECOUNTER" != "0" ]; then
            PR_MESSAGE="$PR_HG_BRANCH ($PR_HG_CHANGECOUNTER)"
        else
            PR_MESSAGE="$PR_HG_BRANCH"
        fi
    else
        PR_MESSAGE=""
    fi
}
setopt extended_glob
preexec () {
    if [[ "$TERM" == "screen" ]]; then
        local CMD=${1[(wr)^(*=*|sudo|-*)]}
        echo -n "\ek$CMD\e\\"
    fi
}
setprompt () {
    ###
    # Need this so the prompt will work.

    setopt prompt_subst


    ###
    # See if we can use colors.

    autoload colors zsh/terminfo
    if [[ "$terminfo[colors]" -ge 8 ]]; then
        colors
    fi
    for color in RED GREEN YELLOW BLUE MAGENTA CYAN WHITE; do
        eval PR_$color='%{$terminfo[bold]$fg[${(L)color}]%}'
        eval PR_LIGHT_$color='%{$fg[${(L)color}]%}'
        (( count = $count + 1 ))
    done
    PR_NO_COLOUR="%{$terminfo[sgr0]%}"


    ###
    # See if we can use extended characters to look nicer.
    
    typeset -A altchar
    set -A altchar ${(s..)terminfo[acsc]}
    PR_SET_CHARSET="%{$terminfo[enacs]%}"
    PR_SHIFT_IN="%{$terminfo[smacs]%}"
    PR_SHIFT_OUT="%{$terminfo[rmacs]%}"
    PR_HBAR=${altchar[q]:--}
    PR_ULCORNER=${altchar[l]:--}
    PR_LLCORNER=${altchar[m]:--}
    PR_LRCORNER=${altchar[j]:--}
    PR_URCORNER=${altchar[k]:--}

    
    ###
    # Decide if we need to set titlebar text.
    
    case $TERM in
    xterm*)
        PR_TITLEBAR=$'%{\e]0;%(!.-=*[ROOT]*=- | .)%n@%m:%~ | ${COLUMNS}x${LINES} | %y\a%}'
        ;;
    screen)
        PR_TITLEBAR=$'%{\e_screen \005 (\005t) | %(!.-=[ROOT]=- | .)%n@%m:%~ | ${COLUMNS}x${LINES} | %y\e\\%}'
        ;;
    *)
        PR_TITLEBAR=''
        ;;
    esac
    
    
    ###
    # Decide whether to set a screen title
    if [[ "$TERM" == "screen" ]]; then
    PR_STITLE=$'%{\ekzsh\e\\%}'
    else
    PR_STITLE=''
    fi
    
    
    ###
    # APM detection
    
#    if which ibam > /dev/null; then
#    PR_APM='$PR_RED${${PR_APM_RESULT[(f)1]}[(w)-2]}%%(${${PR_APM_RESULT[(f)3]}[(w)-1]})$PR_LIGHT_BLUE:'
#    elif which apm > /dev/null; then
#    PR_APM='$PR_RED${PR_APM_RESULT[(w)5,(w)6]/\% /%%}$PR_LIGHT_BLUE:'
#    else
#    PR_APM=''
#    fi
    
    ###
    # Finally, the prompt.

    # the original one
    PROMPT='
$PR_SET_CHARSET$PR_STITLE${(e)PR_TITLEBAR}\
$PR_CYAN$PR_SHIFT_IN$PR_ULCORNER$PR_BLUE$PR_HBAR$PR_SHIFT_OUT(\
$PR_GREEN%(!.%SROOT%s.%n)$PR_GREEN@%m:%l\
$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_CYAN$PR_HBAR${(e)PR_FILLBAR}$PR_BLUE$PR_HBAR$PR_SHIFT_OUT(\
$PR_MAGENTA%$PR_PWDLEN<...<%~%<<\
$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_CYAN$PR_URCORNER$PR_SHIFT_OUT\

$PR_CYAN$PR_SHIFT_IN$PR_LLCORNER$PR_BLUE$PR_HBAR$PR_SHIFT_OUT(\
%(?..$PR_LIGHT_RED%?$PR_BLUE:)\
${(e)PR_APM}$PR_YELLOW%D{%H:%M}\
$PR_LIGHT_BLUE:%(!.$PR_RED.$PR_WHITE)%#$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_RED$PR_MESSAGE$PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_NO_COLOUR '

    # the modified one
    PROMPT='
$PR_SET_CHARSET$PR_STITLE${(e)PR_TITLEBAR}\
$PR_CYAN$PR_SHIFT_IN$PR_ULCORNER$PR_BLUE$PR_HBAR$PR_SHIFT_OUT(\
$PR_GREEN%$PR_PWDLEN<...<%~%<<\
$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_CYAN$PR_HBAR${(e)PR_FILLBAR}$PR_BLUE$PR_HBAR$PR_SHIFT_OUT(\
$PR_MAGENTA%(!.%SROOT%s.%n)$PR_MAGENTA@%m:%l\
$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_CYAN$PR_URCORNER$PR_SHIFT_OUT\

$PR_CYAN$PR_SHIFT_IN$PR_LLCORNER$PR_BLUE$PR_HBAR$PR_SHIFT_OUT(\
%(?..$PR_LIGHT_RED%?$PR_BLUE:)\
${(e)PR_APM}$PR_YELLOW%D{%H:%M}\
$PR_LIGHT_BLUE:%(!.$PR_RED.$PR_WHITE)%#$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_RED$PR_MESSAGE$PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_NO_COLOUR '


    RPROMPT=' $PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_BLUE$PR_HBAR$PR_SHIFT_OUT\
($PR_YELLOW%D{%a,%b%d}$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_CYAN$PR_LRCORNER$PR_SHIFT_OUT$PR_NO_COLOUR'

    PS2='$PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_BLUE$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT(\
$PR_LIGHT_GREEN%_$PR_BLUE)$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT\
$PR_CYAN$PR_SHIFT_IN$PR_HBAR$PR_SHIFT_OUT$PR_NO_COLOUR '
}

setprompt
#off#### http://aperiodic.net/phil/prompt/