cast2narration

#!/bin/bash
#
# This helper executes a screencast script. It expects an xterm window to be up and
# running (or fails otherwise). This player is ignorant regarding the actual setup
# of the terminal session running in the xterm window, it just feeds that window
# via a keyboard input simulation, while generating text-to-speech output
# according to the script
#
# Usage: play_script <scriptfile>
#
# Note: If a script is written in way that paths are deterministic and identical
#       across the running script and the scripted terminal session, this script
#       can also be used to implement tests. Scripts are executed in a bash session
#       with -u and -e flags active. However, this would only work of the sessions
#       run on the same system, and not, for example, the demo in docker container.

set -u -e

#
# http://www.festvox.org/docs/manual-2.4.0/festival_10.html#Sable-example
#
#The boy saw the girl <BREAK/> in the park with the telescope. Good morning <BREAK /> My name is Stuart, which is spelled
#<RATE SPEED="-40%">
#<SAYAS MODE="literal">stuart</SAYAS> </RATE>
#though some people pronounce it 
#<PRON SUB="stoo art">stuart</PRON>.  My telephone number
#is <SAYAS MODE="literal">2787</SAYAS>.
#
#I used to work in <PRON SUB="Buckloo">Buccleuch</PRON> Place, 
#but no one can pronounce that.

# shortcut for making xdotool find the right window
xdt="xdotool search --classname xterm windowactivate"

# need a tempfile for feeding festival
tts_file=$(mktemp).sable
# cleanup on exit
trap "rm -f $tts_file" EXIT

function say()
{
cat << EOT > $tts_file
<?xml version="1.0"?>
<!DOCTYPE SABLE PUBLIC "-//SABLE//DTD SABLE speech mark up//EN" "Sable.v0_2.dtd" []>
<SABLE>
<SPEAKER NAME="cmu_us_slt_arctic_hts">
$(echo "$1" | sed -e 's/datalad/data-lad/g')
</SPEAKER>
</SABLE>
EOT
festival --tts $tts_file
}

function type () {
	$xdt type --delay 25 --window %@ "$1"
}
function key () {
	$xdt key --window %@ $*
}
function sleep () {
	xdotool sleep $1
}
function execute () {
	$xdt sleep 0.5 key --window %@ Return
}

# make sure the target xterm is up and running

$xdt --sync sleep 0.2

. $1