ssh

#!/bin/ksh
# Wrapper around the ssh binary to add the host name to the terminal window background
PATH="/opt/local/bin:$PATH"
if [ "$(tty)" == 'not a tty' ] || [ "$TERM_PROGRAM" != "iTerm.app" ]
then
	exec /usr/bin/ssh "$@"
fi

function __calculate_iterm_window_dimensions {
	typeset size=($(osascript -e "tell application \"iTerm\"
		get bounds of window 1
	end tell" | tr ',' ' '))

	typeset x1=${size[0]} y1=${size[1]} x2=${size[2]} y2=${size[3]}
	typeset w=$(( $x2 - $x1 - 15))
	typeset h=$(( $y2 - $y1 - 44))
	echo "${w}x${h}"
}

DIMENSIONS=$(__calculate_iterm_window_dimensions)

BG_COLOR="#222222"
#FG_COLOR="#662020"
#FG_COLOR="#9B0000"
FG_COLOR="#FFB507"
#FG_COLOR="#9D06E2"
GRAVITY="NorthEast"

OFFSET1="20,10"
OFFSET2="20,80"
FONT_SIZE="60"
FONT_STYLE="Normal"
#FONT="$HOME/.ksh/resources/SimpleLife.ttf"
#FONT="$HOME/Library/Fonts/Starjhol.TTF"
#FONT="$HOME/Library/Fonts/Starjout.TTF"
FONT="$HOME/Library/Fonts/Starjedi.ttf"
HOSTNAME=$(echo $@ | sed -e "s/.*@//" -e 's/-.* //' -e "s/ .*//" -e 's/\..*$//')
: ${SSH_HOSTNAME:=$HOSTNAME}
LOOKUP_TAB="${HOME}/.ssh/host-lookup"
if [ -f "$LOOKUP_TAB" ]
then
  hst=$(grep "^${HOSTNAME}" "$LOOKUP_TAB")
  if [ -n "$hst" ]
  then
    HOSTNAME=$(echo $hst | awk '{print $2}')
  fi
fi

function set_bg {
	typeset tty=$(tty)
	osascript -e "
	tell application \"iTerm\"
		repeat with theTerminal in terminals
			tell theTerminal
				try
					tell session id \"$tty\"
						set background image path to \"$1\"
					end tell
				on error errmesg number errn
				end try
			end tell
		end repeat
	end tell"
}

on_exit () {
		if [ ! -f /tmp/iTermBG.empty.png ]
		then
				convert \
          -size "$DIMENSIONS" xc:"$BG_COLOR" -gravity "$GRAVITY" -fill "$FG_COLOR" \
          -font "$FONT" -style "$FONT_STYLE" -pointsize "$FONT_SIZE" -antialias \
          -draw "text $OFFSET1 '$(hostname -s)'" \
          "/tmp/iTermBG.empty.png"
		fi
		set_bg
#		set_bg "/tmp/iTermBG.empty.png"
		rm "/tmp/iTermBG.$$.png"
}

trap on_exit EXIT
convert \
		-size "$DIMENSIONS" xc:"$BG_COLOR" -gravity "$GRAVITY" -fill "$FG_COLOR" \
		-font "$FONT" -style "$FONT_STYLE" -pointsize "$FONT_SIZE" -antialias \
		-draw "text $OFFSET1 '${SSH_HOSTNAME}'" \
		"/tmp/iTermBG.$$.png"
set_bg "/tmp/iTermBG.$$.png"
/usr/bin/ssh "$@"