#!/bin/sh
# $Id: osx-disable-power-mgmt,v 1.2 2017/11/14 00:44:55 friedman Exp $

PM=/Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
SS=/Library/Preferences/com.apple.screensaver.plist

plb_pm() { /usr/libexec/PlistBuddy -c "$*" "$PM"; }
plb_ss() { /usr/libexec/PlistBuddy -c "$*" "$SS"; }

# Keys with whitespace need to be quoted.
modify()
{
    plb_pm set "':Custom Profile:AC Power:Disk Sleep Timer'"    ${1-0}
    plb_pm set "':Custom Profile:AC Power:Display Sleep Timer'" ${2-0}
    plb_pm set "':Custom Profile:AC Power:System Sleep Timer'"  ${3-0}
    plb_ss set :loginWindowIdleTime                             ${4-0}
}

create()
{
    plb_pm add '":Custom Profile:AC Power:Disk Sleep Timer"'    integer ${1-0}
    plb_pm add '":Custom Profile:AC Power:Display Sleep Timer"' integer ${2-0}
    plb_pm add '":Custom Profile:AC Power:System Sleep Timer"'  integer ${3-0}
    plb_ss add :loginWindowIdleTime                             integer ${4-0}
}

case $1 in
    -v ) plb_pm print
         plb_ss print ;;

    create | modify ) fn=$1; shift; $fn "$@" ;;

    * ) modify "$@" ;;
esac

# eof