#!/bin/sh
# Filename:      swspeak-setup
# Purpose:       script for activating software speak(up) features
# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
# Bug-Reports:   see http://grml.org/bugs/
# License:       This file is licensed under the GPL v2 or any later version.
################################################################################
# Note: the script is used via swspeak() function in grml's zshrc so
#       the prompt of zsh is set accordingly
# TODO: support disabling swspeakup again?

if [ -r /etc/grml/script-functions ] ; then
   . /etc/grml/script-functions
else
   echo "Failed to source /etc/grml/script-functions - exiting.">&2
   exit 1
fi

if [ -r /etc/grml/lsb-functions ] ; then
   . /etc/grml/lsb-functions
else
   echo "Failed to source /etc/grml/lsb-functions - exiting.">&2
   exit 1
fi

if [ "$1" = '-h' ] || [ "$1" = '--help' ] ; then
   cat << EOF
swspeak - script for activating software speak features

Usage: swspeak [-a] [-e|-s] [-f] [-h]

Supported options:

   -e   use espeakup (default, if available)
   -s   use speechd-up (fallback, if available)
   -a   do not execute aumix for setting mixer levels
   -f   disable flite sound output
   -h   display this help text
EOF
   exit 0
fi

NOAUMIX=''
[ "$1" = '-a' ] && NOAUMIX=1
ESPEAK=''
[ "$1" = '-e' ] && ESPEAK=1
NOFLITE=''
[ "$1" = '-f' ] && NOFLITE=1
SPEECHD=''
[ "$1" = '-s' ] && SPEECHD=1

check4root || exit 1

# execute flite only if it's present
flitewrapper() {
   if [ -x /usr/bin/flite -a -z "$NOFLITE" ] ; then
      flite -o play -t "$*"
   fi
}

# execute aumix
if [ -x /usr/bin/aumix -a -z "$NOAUMIX" ] ; then
   einfo "Setting mixer levels to 90"
   aumix -w 90 -v 90 -p 90 -m 90
   eend $?
fi

# check for software synthesizer support
if ! [ -r /dev/softsynth ] ; then
   if [ ! -d /proc/speakup/ ] && ! grep -q speakup /proc/modules ; then
      ewarn "Kernel does not support software speakup - trying to load kernel module:" ; eend 0
      eindent
      einfo "Loading speakup_soft"
      if modprobe speakup_soft ; then
         eend 0
      else
         flitewrapper "Fatal error setting up software speakup"
         eend 1
         exit 1
      fi
      eoutdent
   fi
fi

# the kernel module takes some time until it can be accessed
sleep 1

# helper functions for espeakup and speechd-up
espeak() {
if [ -x /usr/bin/espeakup ] ; then
   espeakup
else
   flitewrapper "espeakup not available, sorry."
   return 1
fi
}

speechd() {
if [ -x /usr/bin/speechd-up ] ; then
   /etc/init.d/speech-dispatcher start
   nice -n -20 speechd-up
else
   flitewrapper "speechd-up not available, sorry."
   return 1
fi
}

# finally execute the according program:
if [ -n "$ESPEAK" ] ; then
   espeak && exit 0 || exit 1
fi

if [ -n "$SPEECHD" ] ; then
   speechd && exit 0 || exit 1
fi

if grep -q 'swspeak=espeak' /proc/cmdline ; then
   ( espeak && exit 0 ) || ( speechd && exit 0 ) || exit 1
elif grep -q 'swspeak=speechd' /proc/cmdline ; then
   ( speechd && exit 0 ) || ( espeak && exit 0 ) || exit 1
else
   ( espeak && exit 0 ) || ( speechd && exit 0 ) || exit 1
fi

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