/usr/share/emacs/site-lisp/emacspeak/servers/braillenspeak is in emacspeak-ss 1.12.1-6.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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package require Tclx
# all.in - Generic Emacspeak server code -*-tcl-*-
# Keywords: Emacspeak, TCL, speech, server
#
# Original program by T. V. Raman.
# Modifications to make generic copyright 1998 by James R. Van Zandt
# <jrv@vanzandt.mv.com>, all rights reserved.
#
# $Id: all.in,v 1.19 2007/03/23 00:14:24 jrv Exp jrv $
#
# Copyright (c) 1995, 1996, 1997 T. V. Raman, Adobe Systems
# Incorporated.
# All Rights Reserved
# Copyright (c) 1994, 1995 by Digital Equipment Corporation.
# All Rights Reserved.
#
# This file is not part of GNU Emacs, but the same permissions apply.
#
# GNU Emacs 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, or (at your option)
# any later version.
#
# GNU Emacs is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GNU Emacs; see the file COPYING. If not, write to
# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
#
# command abbreviations
# This version uses shortened dtk command strings to improve performance
# when running remote sessions.
# These short-cuts are documented here to preserve ones sanity.
# :sa == :say
# c == clause
# w == word
# le == letter
# :to == :tone
# :ra == :rate
# :index == :i
# reply == r
# :punct == :pu
# a == all
# s == some
# }}}
# Fetch the device-specific code
# braillenspeak.in - Interfacing Emacspeak to a Braille 'n Speak -*-tcl-*-
#
# $Id: braillenspeak.in,v 1.5 2006/02/09 00:15:35 jrv Exp jrv $
#
# {{{ Copyright:
#
# This software is Copyright 1998 James R. Van Zandt, all rights reserved
#
# 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; version 2 dated
# June, 1991, or any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307, USA.
#
# }}}
# {{{ procedures
proc version {} {
global tts
q {this is Braillenspeak, unknown version }
d
}
# Return a command string to generate a tone with the
# specified frequency (in Hz) and duration (in msec).
proc tone_command {{frequency 440} {duration 50}} {
global tts queue
return ""
}
proc silence_command {{duration 50}} {
set silence ""
loop i 0 [expr duration/10] {
append silence "$tts(silencecmd)"
}
return silence
}
# Braille 'n Speak - specific functions
#
# ^exE Speech rate. x = '01' thru '16'
# ^eC Speech rate set to 10 (for compatibility to Echo)
# ^eA Set to Total Punctuation (everything, even spaces. Mostly unusable).
# ^eM Set to Most Punctuation (best mode for Synthesizers).
# ^eS Set to Some Punctuation
# ^eZ Set to No Punctuation
# ^exP Set Pitch to x, x = '01' to '63'
# ^exV Set Volume to x, x = '01' to '16'
# ^exT Set Frequency (Tonal Quality) to x, x = '01' to '25'
# ^f index marker
#
#
# Return speech rate command
# Argument is desired rate in words per minute.
proc rate_command {r} {
# The following formula is a simple fit to these indices and
# corresponding rates (words per minute) for a Braille 'n Speak,
# measured 5/28/98.
# 1 49
# 7 71
# 8 80
# 9 100
# 10 123
# 11 142
# 12 180
# 13 240
# 14 355
# 15 395
# 16 436
set rmin 49
set rmax 437
if {$r<$rmin} {set r $rmin}
if {$r>$rmax} {set r $rmax}
set a 202000
set b 1500000
set c 9370
set index [int [floor [expr (1+$a*$r)/($b+$c*$r)]]]
return [format "\5%02dE" $index]
}
# Return punctuation mode command
proc punctuation_command {} {
global tts
set mode $tts(punctuations)
set punctuation(all) M
set punctuation(some) S
set punctuation(none) Z
return "\5$punctuation($mode)"
}
proc tts_initialize {} {
global tts
# DoubleTalk commands
set tts(charmode) ""
set tts(stop) "\030"
# FIXME what standard interword pause?
set tts(textmode) ""
set tts(silencecmd) ""
set tts(resetcmd) ""
set tts(somepunct) "\005M"
set tts(mark) "\006"
set tts(flush) "\r"
set tts(tone_440_10) ""
set tts(tone_660_10) ""
set tts(dennis) "\0056T\00510P"
set tts(henry) "\0056T\0058P"
set tts(frank) "\0056T\0056P"
set tts(kit) "\0058T\00510P"
set tts(paul) "\0058T\0058P"
set tts(ursula) "\0058T\0056P"
set tts(rita) "\00510T\00510P"
set tts(betty) "\00510T\0058P"
set tts(wendy) "\00510T\0056P"
set tts(version) "braille n speak server from emacspeak-ss version 1.12.1"
set tts(initstring) \
"$tts(paul)
This is the Braille 'n Speak server dtk-bs.\
speakers report\r\
$tts(paul)Paul\r,
$tts(dennis)Dennis\r,
$tts(henry)Henry\r,
$tts(frank)Frank\r,
$tts(kit)Kit\r,
$tts(ursula)Ursula\r,
$tts(rita)Rita\r,
$tts(betty)Betty\r,
$tts(wendy)Wendy.
$tts(paul)\r\n"
}
# }}}
# {{{ Emacs local variables
### Local variables:
### major-mode: tcl-mode
### voice-lock-mode: t
### folded-file: t
### End:
# }}}
# {{{ These are wrappers which accommodate versions of emacspeak before 8.0
proc dectalk_set_punctuations {mode} {
tts_set_punctuations $mode
return ""
}
proc dectalk_set_speech_rate {rate} {
tts_set_speech_rate $rate
return ""
}
proc dectalk_set_character_scale {factor} {
tts_set_character_scale $factor
return ""
}
proc dectalk_say {text} {
tts_say $text
return ""
}
proc dectalk_speak {text} {
tts_speak $text
return ""
}
proc dectalk_resume {} {
tts_resume
return ""
}
proc dectalk_pause {} {
tts_pause
return ""
}
proc dectalk_split_caps {flag} {
tts_split_caps $flag
return ""
}
proc dectalk_capitalize {flag} {
tts_capitalize $flag
return ""
}
proc dectalk_allcaps_beep {flag} {
tts_allcaps_beep $flag
return ""
}
proc dectalk_reset {} {
tts_reset
}
# this was replaced by d in version 12.0
proc tts_speak {text} {
q $text
speech_task
}
# }}}
# {{{ These are the current functions
proc tts_set_punctuations {mode} {
global tts
set tts(punctuations) $mode
return ""
}
proc tts_set_speech_rate {rate} {
global tts
set factor $tts(char_factor)
set tts(say_rate) [round \
[expr $rate * $factor ]]
set tts(speech_rate) $rate
return ""
}
proc tts_set_character_scale {factor} {
global tts
set tts(say_rate) [round \
[expr $tts(speech_rate) * $factor ]]
set tts(char_factor) $factor
return ""
}
proc tts_say {text} {
global tts
regsub -all {\[:version speak\]} $text $tts(version) text
set tts(not_stopped) 1
set fl $tts(flush)
puts -nonewline $tts(write)\
"$text$fl"
# "\[_]\[:sa w]$text "
tts_gobble_acknowledgements
return ""
}
# formerly called tts_letter
proc l {text} {
global tts
set tts(not_stopped) 1
# set r $tts(speech_rate)
# set f $tts(say_rate)
set ra [rate_command $tts(say_rate)]
tts_gobble_acknowledgements 0.001
puts -nonewline $tts(write)\
"$tts(charmode)$text\r"
# "\[_]\[:ra $f :sa le]$text"
return ""
}
# formerly called tts_speak
proc d {} {
speech_task
}
proc tts_resume {} {
global tts
queue_restore
if {[queue_empty?]} {
set fl $tts(flush)
puts -nonewline $tts(write) "No speech to resume$fl"
set tts(not_stopped) 1
} else {
speech_task
}
return ""
}
proc tts_pause {} {
global tts
queue_backup
s
return ""
}
# formerly called tts_stop
proc s {} {
global tts
if {$tts(not_stopped)} {
set st $tts(stop)
set tm $tts(textmode)
set ra [rate_command $tts(speech_rate)]
puts -nonewline $tts(write) "$st$ra$tm"
set tts(not_stopped) 0
# select [list $tts(read)] {} {} {}
# read $tts(read) 1
set tts(talking?) 0
queue_clear
#tts_gobble_acknowledgements
}
}
# formerly called tts_tone
proc t {{frequency 440} {duration 50}} {
global tts queue
set command [tone_command $frequency $duration]
set queue($tts(q_tail)) [list t $command]
incr tts(q_tail)
return ""
}
proc sh {{duration 50}} {
global tts queue
set silence [silence_command duration]
set queue($tts(q_tail)) [list t $silence]
incr tts(q_tail)
return ""
}
proc tts_split_caps {flag} {
global tts
set tts(split_caps) $flag
return ""
}
proc tts_capitalize {flag} {
global tts
set tts(capitalize) $flag
return ""
}
proc tts_allcaps_beep {flag} {
global tts
set tts(allcaps_beep) $flag
return ""
}
proc read_pending_p {file_handle} {
set status [lsearch [select [list $file_handle] {} {} 0] $file_handle]
expr $status >= 0
}
proc tts_get_acknowledgement {} {
global tts
if {$tts(requires_poll)} {
return [tts_poll]
}
# echo " entering tts_get_acknowledgement"
# note that we cannot use stdin here due to a tcl bug.
# in tcl 7.4 we could always say file0
# in 7.5 and above (only tested in 7.5 and 8.0)
# we need to say sock0 when we are a server
set input $tts(input)
# wait until either emacs or synthesizer write something
set status [select [list $tts(read) $input ] {} {} {}]
# echo " status=$status"
set code ""
if {[lsearch $status $input] >=0} {
set tts(talking?) 0
} else {
set r $tts(read)
while {[lsearch [select [list $r] {} {} 0.1] $r] >= 0 } {
append code [read $r 1]
}
}
# echo " leaving tts_get_acknowledgement"
return $code
}
# Gobble up any garbage the Dectalk has returned.
proc tts_gobble_acknowledgements {{delay 0.01}} {
global tts
set r $tts(read)
while {[lsearch [select [list $r] {} {} 0.001] $r] >= 0 } {
read $r 1
}
}
proc tts_reset {} {
global tts
s
tts_gobble_acknowledgements
set tts(not_stopped) 1
puts -nonewline $tts(write) \
"$tts(resetcmd) Restoring sanity to the speech device.\r"
}
# queue a rate command
proc r {rate} {
global queue tts
set rate [rate_command $tts(speech_rate)]
set queue($tts(q_tail)) [list s $rate]
incr tts(q_tail)
return ""
}
# }}}
# {{{ speech task
proc speech_task {} {
global queue tts
set tts(talking?) 1
set tts(not_stopped) 1
set np $tts(paul)
set ra [rate_command $tts(speech_rate)]
set length [queue_length]
tts_gobble_acknowledgements
set pu [punctuation_command]
puts -nonewline $tts(write) \
"$tts(textmode)$np$ra$pu"
# "\[_]\[:sa c]\[:np]\[:ra $r]\[:pu $mode]"
loop index 0 $length {
set event [queue_remove]
set event_type [lindex $event 0]
switch -exact -- $event_type {
s {
set text [clean [lindex $event 1]]
puts -nonewline $tts(write) \
"$tts(mark)$text$tts(flush)"
# "\[:i r 1]$text\[_.]\013"
set retval [tts_get_acknowledgement ]
}
t {
set text [fixtone [lindex $event 1]]
puts -nonewline $tts(write) "$tts(mark)$text"
# "\[_.]$text\[_.] "
set retval [tts_get_acknowledgement ]
}
a {
set sound [lindex $event 1]
catch "exec $tts(play) $sound >& /dev/null &" errCode
}
default {
}
}
if {$tts(talking?) == 0} {break;}
}
set tts(talking?) 0
return ""
}
# }}}
# {{{ queue:
# preprocess element before sending it out:
proc clean {element} {
global queue tts
if {[string match all $tts(punctuations)] } {
regsub -all {@} $element \
{ at } element
regsub -all {\#} $element \
{ pound } element
regsub -all {\*} $element \
{ star } element
regsub -all {[%&;()$+=/]} $element { \0 } element
regsub -all {\.,} $element \
{ dot comma } element
regsub -all {\.\.\.} $element \
{ dot dot dot } element
regsub -all {\.\.} $element \
{ dot dot } element
regsub -all {([a-zA-Z])\.([a-zA-Z])} $element \
{\1 dot \2} element
regsub -all {[0-9]+} $element { & } element
} else {
if {[string match some $tts(punctuations)] } {
regsub -all {@} $element \
{ at } element
} else {
regsub -all {@} $element \
{ } element
}
regsub -all {\.,} $element \
{} element
regsub -all {([0-9a-zA-Z])(["!;/:()=])+([0-9a-zA-z])} $element \
{\1 \2 \3} element
regsub -all {([a-zA-Z])(,)+([a-zA-z])} $element \
{\1 \2 \3} element
regsub -all {([a-zA-Z])(\.)([a-zA-z])} $element \
{\1 dot \3} element
# regsub -all {``} $element {[_<1>/]} element
# regsub -all {''} $element {[_<1>\\]} element
# regsub -all { '} $element {[_']} element
# regsub -all {' } $element {[_']} element
# regsub -all -- {--} $element { [_,]} element
regsub -all -- {-} $element { } element
}
if {$tts(capitalize) } {
regsub -all {[A-Z]} $element "$tts(tone_440_10)&" element
# {[_ :to 440 10]&} element
}
if {$tts(split_caps) } {
if {$tts(allcaps_beep)} {
set tone "$tts(tone_660_10)"
set abbrev_tone "$tts(tone_660_10)"
} else {
set tone ""
set abbrev_tone ""
}
set allcaps [regexp {[^a-zA-Z0-9]?([A-Z][A-Z0-9]+)[^a-zA-Z0-9]} $element full match ]
while {$allcaps } {
# if {[string length $match] <=3} {
# set abbrev "$abbrev_tone$match"
## regsub -all {[A-Z]} $abbrev {&[*]} abbrev
## regsub -all A $abbrev {[ey]} abbrev
# regsub $match $element $abbrev element
# } else {
regsub $match $element "$tone[string tolower $match]" element
# }
set allcaps [regexp {[^a-zA-Z0-9]([A-Z][A-Z0-9]+)[^a-zA-Z0-9]} $element full match ]
}
# regsub -all {[A-Z]} $element {[_<5>]&} element
# regsub -all {([^ -_A-Z])([A-Z][a-zA-Z]* )} $element\
# {\1[_<1>]\2[,] } element
# regsub -all {([^ -_A-Z])([A-Z])} $element\
# {\1[:pause 1]\2} element
}
# substitute for voice commands
# the first substitution is a special case for indentation in tcl-mode
regsub -all {\[:np :dv sm 40 ri 40 hr 7 sr 10 \]} $element \
$tts(henry) element
# $tts(betty) element
regsub -all {\[:np[^]]*\]} $element $tts(paul) element
regsub -all {\[:nh[^]]*\]} $element $tts(henry) element
regsub -all {\[:nd[^]]*\]} $element $tts(dennis) element
regsub -all {\[:nf[^]]*\]} $element $tts(frank) element
regsub -all {\[:nb[^]]*\]} $element $tts(betty) element
regsub -all {\[:nu[^]]*\]} $element $tts(ursula) element
regsub -all {\[:nr[^]]*\]} $element $tts(rita) element
regsub -all {\[:nw[^]]*\]} $element $tts(wendy) element
regsub -all {\[:nk[^]]*\]} $element $tts(kit) element
regsub -all {\[:n[^]]*\]} $element $tts(paul) element
# map any unrecognized voice to Dennis
regsub -all {\[ :dv[^]]*\]} $element $tts(dennis) element
return $element
}
# rewrite DECtalk tone commands for the speech device
proc fixtone {element} {
global queue tts
while {[regexp {\[:to ([0-9]+) ([0-9]+)]} $element match freq duration]} {
set cmd [tone_command $freq $duration]
regsub {\[:to ([0-9]+) ([0-9]+)]} $element $cmd element
}
return $element
}
proc tts_sync_state {punct capitalize allcaps splitcaps rate} {
tts_set_punctuations $punct
tts_capitalize $capitalize
tts_allcaps_beep $allcaps
tts_split_caps $splitcaps
tts_set_speech_rate $rate
}
# currently we use an inlined version of this test in speech_task
proc queue_empty? {} {
global tts
expr $tts(q_head) == $tts(q_tail)
}
proc queue_nonempty? {} {
global tts
expr $tts(q_head) != $tts(q_tail)
}
proc queue_length {} {
global tts
expr $tts(q_tail) - $tts(q_head)
}
proc queue_clear {} {
global tts queue
if {$tts(debug)} {
puts -nonewline $tts(write) "$tts(q_head) e\013"
}
unset queue
set queue(-1) ""
set tts(q_head) 0
set tts(q_tail) 0
return ""
}
# formerly called queue_speech --queue speech event
proc q {element} {
global queue tts env
set queue($tts(q_tail)) [list s $element]
incr tts(q_tail)
set mod [expr ($tts(q_tail) - $tts(q_head)) % 50]
if {[info exists env(EMACSPEAK_DIR)] } {
set sound "$env(EMACSPEAK_DIR)/sounds/drip.au"
} else {
set sound "drip.au"
}
if {$mod == 0} {
set tone [tone_command 500 20]
puts -nonewline $tts(write) "$tone$tty(flush)"
catch "exec $tts(play) $sound >& /dev/null &" errCode
}
return ""
}
# queue a sound event
proc a {sound} {
global queue tts
set queue($tts(q_tail)) [list a $sound]
incr tts(q_tail)
return ""
}
proc queue_remove {} {
global tts queue
set element $queue($tts(q_head))
incr tts(q_head)
return $element
}
proc queue_backup {} {
global tts backup queue
if {[queue_empty?]} {
set tts(backup_head) 0
set tts(backup_tail) 0
return
}
unset backup
set backup(-1) ""
set head [expr max($tts(q_head) - 2, 0)]
set tail $tts(q_tail)
loop i $head $tail 1 {
set backup($i) $queue($i)
}
set tts(backup_head) $head
set tts(backup_tail) $tail
}
proc queue_restore {} {
global tts backup queue
unset queue
set queue(-1) ""
set head $tts(backup_head)
set tail $tts(backup_tail)
loop i $head $tail 1 {
set queue($i) $backup($i)
}
set tts(q_head) $head
set tts(q_tail) $tail
}
# }}}
# {{{ sounds:
# play a sound over the server
proc p {sound} {
global tts
catch "exec $tts(play) $sound >& /dev/null &" errCode
speech_task
}
# }}}
# {{{self test
proc tts_selftest {} {
loop i 1 10 {
q "This is test $i. "
}
d
}
# }}}
# {{{guessing os and port
proc which_os {} {
global env
#if env variable DTK_OS is set, use it;
if {[info exists env(DTK_OS)] } {
return $env(DTK_OS)
}
set machine [exec uname -a]
#os hostname version
set fields [split $machine ]
set os [lindex $fields 0]
set host [lindex $fields 1]
set version [lindex $fields 2]
switch -exact -- $os {
ULTRIX -
OSF1 {return DEC}
SunOS {
#are we solaris
if {[string match 5.* $version] } {
return Solaris
} else {
#we are sunos 4
return SunOS
}
}
Linux -
default {
return Linux
}
}
}
proc which_port {{os Linux}} {
global env
if {[info exists env(DTK_PORT)] } {
set port $env(DTK_PORT)
puts stdout "Set port to $port"
} else {
switch -exact -- $os {
DEC {
set port /dev/tty00
}
SunOS -
Solaris -
solaris {
set port /dev/ttya
}
Linux -
default {
set port /dev/ttyS0
}
}
}
return $port
}
# }}}
# {{{ globals
# optional debugging output
if {[info exists env(DTK_DEBUG)] } {
set tts(debug) 1
} else {
set tts(debug) 0
}
# flag to avoid multiple consecutive stops
set tts(not_stopped) 1
# set the machine and I/O port
set machine [which_os]
set port [which_port $machine]
set tts(port) $port
set tts(read) [open $port r]
set tts(write) [open $port w]
#set up stty settings
switch -exact -- $machine {
DEC { #osf and ultrix
exec stty sane 9600 raw -echo < $port
exec stty ixon ixoff < $port
}
solaris -
Solaris {
exec /usr/bin/stty sane 9600 raw < $port
exec /usr/bin/stty -echo < $port
exec /usr/bin/stty ignpar < $port
exec /usr/bin/stty ixon ixoff < $port
}
SunOS {
exec stty sane 9600 raw -echo -echoe -echoke echoctl > $port
exec stty ixon ixoff > $port
}
Linux -
default {
if {[expr ![regexp /dev/dtlk.* $port]]} {
exec stty sane 9600 raw -echo crtscts < $port
exec stty -echo < $port
exec stty ixon ixoff < $port
}
}
}
if {$tts(debug)} {
set tts(dfile) [open "log.debug" w]
fcntl $tts(dfile) nobuf 1
}
# set up the right kind of buffering:
fcntl $tts(read) nobuf 1
fcntl $tts(write) nobuf 1
# split caps flag:
set tts(split_caps) 1
# Capitalize flag
set tts(capitalize) 0
# allcaps beep flag
set tts(allcaps_beep) 0
set tts(talking?) 0
set tts(speech_rate) 425
set tts(char_factor) 1.2
set tts(say_rate) [round \
[expr $tts(speech_rate) * $tts(char_factor)]]
set tts(q_head) 0
set tts(q_tail) 0
set tts(backup_head) 0
set tts(backup_tail) 0
set tts(punctuations) some
set queue(-1) ""
set backup(-1) ""
# play program
if {[info exists env(EMACSPEAK_PLAY_PROGRAM)] } {
set tts(play) $env(EMACSPEAK_PLAY_PROGRAM)
} else {
set tts(play) "play"
}
# }}}
set tts(requires_poll) "0"
tts_initialize
# {{{ Initialize and set state.
# working around tcl 7.5
set tts(input) stdin
if {[string match [info tclversion] 7.5]
|| [string match 8.0 [info tclversion]] } {
if {[info exists server_p]} {
set tts(input) sock0
} else {
set tts(input) stdin
}
}
# do not die if you see a control-c
signal ignore {sigint}
# gobble up garbage that is returned on powerup
tts_gobble_acknowledgements
puts -nonewline $tts(write) $tts(initstring)
# Start the main command loop:
commandloop
# }}}
# {{{ Emacs local variables
### Local variables:
### major-mode: tcl-mode
### voice-lock-mode: t
### folded-file: t
### End:
# }}}
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