colorwrap.sh

#!/bin/sh

# ------------------------------------------------------------------------
# colorwrap 
#
# This script wraps a command in a different background and foreground 
# color.  Depending on what the command is, it sets the color, runs the
# command, then sets the color back to what it was before
#
# To display the current colors being used:
#   colorwrap.sh getcolor
#
# Here's an example of how to configure (t)csh to use it:
#   alias ssh '${HOME}/opt/bin/colorwrap.sh \ssh \!*'
#
# Here's how you would use it configure bash:
#   alias ssh='${HOME}/opt/bin/colorwrap.sh \ssh $*'
#
# JD Smith and Eric Kow
#
# This script is released to the public domain.  
# Do whatever you want with it.
# ------------------------------------------------------------------------

# edit this function to change to the commands/servers you want 
# select_fg_color() {
#   case "${1}" in
#     # if the command contains a server name, we set accordingly
#     *cogsci.ed.ac.uk)  NEW_FG_COLOR='yellow';;
#     *sourceforge.net)  NEW_FG_COLOR='orange';;
#     *loria*)           NEW_FG_COLOR='cyan';;
#     # You can get a fancy color by using the Apple's color-
#     # selection GUI and then doing a colorwrap.sh getcolor 
#     *cis.upenn.edu)    NEW_FG_COLOR='{17911, 7822, -1}';; 
#     # black on red (see below)
#     su)                NEW_FG_COLOR='black';;
#     # this is a default value in case we don't specify otherwise
#     *)                 NEW_FG_COLOR='green';;
#   esac
#   echo ${NEW_FG_COLOR}
# }

select_setting() {
  echo `osascript -s s -e "tell application \"Terminal\" to get settings set named \"ssh\""` 
}

# ----------------------------------------------------------------------
# command line arguments 
# ----------------------------------------------------------------------

if [ $# -lt 1 ]; then
  echo "usage: $0 cmd [args...]"
  exit 1
fi

COMMAND=$*

# ----------------------------------------------------------------------
# colors
# ----------------------------------------------------------------------

# Set the title bar name to ensure that the correct window
# is modified by the (slow) Applescripts even if you switch 
# terminals
WINDOW_NAME="${COMMAND}_$$"
set_title() {
  printf "\e]0;${WINDOW_NAME}\a"
}
unset_title() {
  printf "\e]0;\a"
}

tell_prefix() {
  echo 'tell application "Terminal" to tell'\
       '(first window whose name contains "'${WINDOW_NAME}'")'
}

get_setting() {
  TELL=`tell_prefix`
  echo `osascript -s s -e "${TELL} to get its current settings"`
}

# quote_color() {
#   THE_COLOR=$*
#   # quote the NEW_COLOR, if neccesary
#   case ${THE_COLOR} in 
#     \"*\") ;;
#     '{'*'}') ;;
#     *) THE_COLOR='"'${THE_COLOR}'"'
#     ;;
#   esac
#   echo ${THE_COLOR}
# }

set_setting() {
  setting=${1}

  TELL=`tell_prefix`
  osascript -s s -e "${TELL} to set its current settings to ${setting}"
}

# get the original colors
set_title 
OLD_SETTING=`get_setting`

# select the new colors
NEW_SETTING=`select_setting "${COMMAND}"`


# ----------------------------------------------------------------------
# running the command 
# ----------------------------------------------------------------------

decolor_err() {
  # reset the color to its old value
  set_title
  set_setting "${OLD_SETTING}"
  unset_title
  exit 1;
}

# we trap these signals in case the following
# quit/kill/abort/errors signals are sent to the command
# prematurely
trap decolor_err 1 2 3 6

# set the color to the requested NEW_COLOR
set_setting "${NEW_SETTING}"

# run the script and save its exit status
${COMMAND}
CMDEXIT=$?

# reset the color to its old value
set_title 
set_setting "${OLD_SETTING}"
unset_title

# exit with the exit status of the command we ran
exit ${CMDEXIT}