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# ROCK Linux: rock-src/misc/output/tts/functions.sh
# ROCK Linux is Copyright (C) 1998 - 2006 Clifford Wolf
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
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# License can be found at Documentation/COPYING.
# 
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# first we will construct a universal 'say' function
function say_proc() {
	while read line
	do
		while read -t1 subline; do
			line="$( echo -e "${line%.}.\\n$subline" | tail -n10 )"
		done

		case "$ROCKCFG_OUTPUT_TTS_SYSTEM" in
		ownscript)
			echo "${line%.}." | ($ROCKCFG_OUTPUT_TTS_SAYPROG 2>&1) > /dev/null ;;
		festival)
			echo "${line%.}." | $ROCKCFG_OUTPUT_TTS_FESTIVAL --tts - ;;
		mbrola)
			echo "${line%.}." | $ROCKCFG_OUTPUT_TTS_TXT2PHO \
				| $ROCKCFG_OUTPUT_TTS_MBROLA \
					$ROCKCFG_OUTPUT_TTS_VOICEFILE - -.wav \
				| $ROCKCFG_OUTPUT_TTS_PLAY ;;
		flite)
			$ROCKCFG_OUTPUT_TTS_FLITE -t "${line%.}." 2>&1 > /dev/null ;;
		esac
	done
}
function say() {
	if [ -z "$ROCK_OUPUT_PLUGIN_TTS_PROC_ACTIVE" ]; then
		export ROCK_OUPUT_PLUGIN_TTS_PROC_ACTIVE=1
		exec 198> >( say_proc )
	fi
	echo "$*" >&198
}

# A free-form header at start of a section usually followed by calls to
# echo_status_terminal().
#
echo_header_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_HEADER -eq 1 ] && say "$*"
}

# A free-form status message informaing the user of what is happening just
# now.
#
echo_status_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_STATUS -eq 1 ] && say "$*"
}

# A free-form error or warning message if something fails.
#
echo_error_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_ERROR -eq 1 ] && say "$*"
}

# We deny to build a package for some reason.
#
# Usage: echo_pkg_deny <stagelevel> <package-name> <reason>
#
echo_pkg_deny_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_PKG_DENY -eq 1 ] && 
		say `eval echo "$ROCKCFG_OUTPUT_TTS_TXT_PKG_DENY"` 
}

# We start building a package.
#
# Usage: echo_pkg_start <stagelevel> <repository> <package-name> \
#                       <ver> <extraver>
#
echo_pkg_start_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_PKG_START -eq 1 ] && 
		say `eval echo "$ROCKCFG_OUTPUT_TTS_TXT_PKG_START"`
}

# We finished building a package.
#
# Usage: echo_pkg_finish <stagelevel> <repository> <package-name>
#
echo_pkg_finish_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_PKG_FINISH -eq 1 ] && 
		say `eval echo "$ROCKCFG_OUTPUT_TTS_TXT_PKG_FINISH"`
}

# We aborted building a package.
#
# Usage: echo_pkg_abort <stagelevel> <repository> <package-name>
#
echo_pkg_abort_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_PKG_ABORT -eq 1 ] && 
		say `eval echo "$ROCKCFG_OUTPUT_TTS_TXT_PKG_ABORT"`
}

# Whenever the tail of error logs are printed, this function is used for
# that. The parameter may contain newlines.
#
echo_errorquote_tts() {
	[ $ROCKCFG_OUTPUT_TTS_ENABLE_ERRORQUOTE -eq 1 ] && 
		say `eval echo "$ROCKCFG_OUTPUT_TTS_TXT_ERRORQUOTE"`
}