;;; My comments:
;;; - We have a lot of NeXT-specific stuff. More importantly, what is the
;;; Linux, Solaris, and HP-UX specific stuff?
;;;
;;; - I would suggest totally flushing the ttychars vector from the interface
;;; in favor of individual slots in the TTY-INFO record. Keep the vec
;;; in the implementation, and define the TTY-INFO:EOL, etc. procs by
;;; hand as being indices into the vector. We could *also* expose the
;;; vector if we liked.
;;; -Olin
;;; Terminal Control for the Scheme Shell
;;; Copyright (c) 1995 by Brian D. Carlstrom.
;;; Rehacked by Olin 8/95.
(foreign-source
"#include <sys/types.h>"
""
"#include <unistd.h>"
"#include <termios.h>"
""
"/* Make sure foreign-function stubs interface to the C funs correctly: */"
"#include \"tty1.h\""
""
"extern int errno;"
""
"#define errno_or_false(x) (((x) == -1) ? s48_enter_fixnum(errno) : S48_FALSE)"
"#define errno_on_zero_or_false(x) ((x) ? S48_FALSE : s48_enter_fixnum(errno))"
"" )
;;; tty-info records
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; I have to fake out my record package so I can define my very own
;;; MAKE-TTY-INFO procedure. Ech. I oughta have a lower-level record macro
;;; for this kind of thing.
(define-record %tty-info
control-chars
input-flags
output-flags
control-flags
local-flags
input-speed
input-speed-code
output-speed
output-speed-code
min
time
((disclose info) '("tty-info")))
(define tty-info? %tty-info?)
(define type/tty-info type/%tty-info)
(define tty-info:control-chars %tty-info:control-chars)
(define tty-info:input-flags %tty-info:input-flags)
(define tty-info:output-flags %tty-info:output-flags)
(define tty-info:control-flags %tty-info:control-flags)
(define tty-info:local-flags %tty-info:local-flags)
(define tty-info:input-speed %tty-info:input-speed)
(define tty-info:output-speed %tty-info:output-speed)
(define tty-info:min %tty-info:min)
(define tty-info:time %tty-info:time)
(define set-tty-info:control-chars set-%tty-info:control-chars)
(define set-tty-info:input-flags set-%tty-info:input-flags)
(define set-tty-info:output-flags set-%tty-info:output-flags)
(define set-tty-info:control-flags set-%tty-info:control-flags)
(define set-tty-info:local-flags set-%tty-info:local-flags)
(define set-tty-info:min set-%tty-info:min)
(define set-tty-info:time set-%tty-info:time)
;;; Encode the speeds at assignment time.
(define (set-tty-info:input-speed info speed)
(set-%tty-info:input-speed-code info (encode-baud-rate speed))
(set-%tty-info:input-speed info speed))
(define (set-tty-info:output-speed info speed)
(set-%tty-info:output-speed-code info (encode-baud-rate speed))
(set-%tty-info:output-speed info speed))
(define (make-tty-info iflags oflags cflags lflags ispeed ospeed min time)
(make-%tty-info (make-string num-ttychars (ascii->char 0))
iflags oflags cflags lflags
ispeed (encode-baud-rate ispeed)
ospeed (encode-baud-rate ospeed)
min time))
(define (copy-tty-info info)
(make-%tty-info (string-copy (tty-info:control-chars info))
(tty-info:input-flags info)
(tty-info:output-flags info)
(tty-info:control-flags info)
(tty-info:local-flags info)
(tty-info:input-speed info)
(%tty-info:input-speed-code info)
(tty-info:output-speed info)
(%tty-info:output-speed-code info)
(tty-info:min info)
(tty-info:time info)))
;;; (tty-info fd/port)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Retrieve tty-info bits from a tty.
(define (tty-info fdport)
(let ((control-chars (make-string num-ttychars)))
(receive (iflag-hi8 iflag-lo24 oflag-hi8 oflag-lo24
cflag-hi8 cflag-lo24 lflag-hi8 lflag-lo24
ispeed-code ospeed-code)
(sleazy-call/fdes fdport (lambda (fd) (%tty-info fd control-chars)))
(make-%tty-info control-chars
(bitwise-ior (arithmetic-shift iflag-hi8 24) iflag-lo24)
(bitwise-ior (arithmetic-shift oflag-hi8 24) oflag-lo24)
(bitwise-ior (arithmetic-shift cflag-hi8 24) cflag-lo24)
(bitwise-ior (arithmetic-shift lflag-hi8 24) lflag-lo24)
(decode-baud-rate ispeed-code) ispeed-code
(decode-baud-rate ospeed-code) ospeed-code
(char->ascii (string-ref control-chars ttychar/min))
(char->ascii (string-ref control-chars ttychar/time))))))
(define-errno-syscall (%tty-info fdes control-chars) %tty-info/errno
iflag-hi8 iflag-lo24
oflag-hi8 oflag-lo24
cflag-hi8 cflag-lo24
lflag-hi8 lflag-lo24
ispeed-code ospeed-code)
(define-foreign %tty-info/errno
(scheme_tcgetattr (integer fdes)
(var-string control-chars))
(to-scheme integer errno_or_false)
integer integer
integer integer
integer integer
integer integer
integer integer)
;;; (set-tty-info fdport option info) [Not exported]
;;; (set-tty-info/now fdport option info)
;;; (set-tty-info/drain fdport option info)
;;; (set-tty-info/flush fdport option info)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Assign tty-info bits to a tty.
(define (set-tty-info fdport option info)
(let ((if (tty-info:input-flags info))
(of (tty-info:output-flags info))
(cf (tty-info:control-flags info))
(lf (tty-info:local-flags info))
(cc (tty-info:control-chars info))
(is (%tty-info:input-speed-code info))
(os (%tty-info:output-speed-code info)))
(let ((iflag-hi8 (arithmetic-shift if -24))
(iflag-lo24 (bitwise-and if #xffffff))
(oflag-hi8 (arithmetic-shift of -24))
(oflag-lo24 (bitwise-and of #xffffff))
(cflag-hi8 (arithmetic-shift cf -24))
(cflag-lo24 (bitwise-and cf #xffffff))
(lflag-hi8 (arithmetic-shift lf -24))
(lflag-lo24 (bitwise-and lf #xffffff)))
(sleazy-call/fdes fdport
(lambda (fd)
(%set-tty-info fd option
cc
iflag-hi8 iflag-lo24
oflag-hi8 oflag-lo24
cflag-hi8 cflag-lo24
lflag-hi8 lflag-lo24
is os
(tty-info:min info)
(tty-info:time info)))))))
(define-errno-syscall (%set-tty-info fdes option
control-chars
iflag-hi8 iflag-lo24
oflag-hi8 oflag-lo24
cflag-hi8 cflag-lo24
lflag-hi8 lflag-lo24
ispeed-code ospeed-code
min time)
%set-tty-info/errno)
(define-foreign %set-tty-info/errno
(scheme_tcsetattr (integer fdes)
(integer option)
(string control-chars)
(integer iflag-hi8)
(integer iflag-lo24)
(integer oflag-hi8)
(integer oflag-lo24)
(integer cflag-hi8)
(integer cflag-lo24)
(integer lflag-hi8)
(integer lflag-lo24)
(integer ispeed-code)
(integer ospeed-code)
(integer min)
(integer time))
(to-scheme integer errno_or_false))
;;; Exported procs
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Note that the magic %set-tty-info/foo constants must be defined before this
;;; file is loaded due to the set-tty-info/foo definitions below.
(define (make-tty-info-setter how)
(lambda (fdport info) (set-tty-info fdport how info)))
(define set-tty-info/now (make-tty-info-setter %set-tty-info/now))
(define set-tty-info/drain (make-tty-info-setter %set-tty-info/drain))
(define set-tty-info/flush (make-tty-info-setter %set-tty-info/flush))
;;; Send a break on the serial line.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (send-tty-break fdport . maybe-duration)
(sleazy-call/fdes fdport
(lambda (fdes)
(%send-tty-break-fdes fdes (:optional maybe-duration 0)))))
(define-errno-syscall (%send-tty-break-fdes fdes duration)
%send-tty-break-fdes/errno)
(define-foreign %send-tty-break-fdes/errno
(tcsendbreak (integer fdes) (integer duration))
(to-scheme integer errno_or_false))
;;; Drain the main vein.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (drain-tty fdport)
(cond ((integer? fdport) (%tcdrain fdport)) ; File descriptor.
((fdport? fdport) ; Scheme port -- flush first.
(force-output fdport)
(sleazy-call/fdes fdport %tcdrain))
(else (error "Illegal argument to DRAIN-TTY" fdport))))
(define-errno-syscall (%tcdrain fdes) %tcdrain/errno)
(define-foreign %tcdrain/errno (tcdrain (integer fdes)) no-declare ; Ultrix
(to-scheme integer errno_or_false))
;;; Flushing the device queues. (tcflush)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Note that the magic %flush-tty/foo constants must be defined before this
;;; file is loaded due to the flush-tty/foo definitions below.
(define (make-tty-flusher flag)
(lambda (fdport)
(sleazy-call/fdes fdport (lambda (fdes) (%tcflush fdes flag)))))
(define flush-tty/input (make-tty-flusher %flush-tty/input))
(define flush-tty/output (make-tty-flusher %flush-tty/output))
(define flush-tty/both (make-tty-flusher %flush-tty/both))
(define-errno-syscall (%tcflush fdes flag) %tcflush/errno)
(define-foreign %tcflush/errno (tcflush (integer fdes) (integer flag))
no-declare ; Ultrix
(to-scheme integer errno_or_false))
;;; Stopping and starting I/O (tcflow)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Note that the magic %tcflow/foo constants must be defined before this
;;; file is loaded due to the definitions below.
(define (make-flow-controller action)
(lambda (fdport)
(sleazy-call/fdes fdport (lambda (fdes) (%tcflow fdes action)))))
(define start-tty-output (make-flow-controller %tcflow/start-out))
(define stop-tty-output (make-flow-controller %tcflow/stop-out))
(define start-tty-input (make-flow-controller %tcflow/start-in))
(define stop-tty-input (make-flow-controller %tcflow/stop-in))
(define-errno-syscall (%tcflow fdes action) %tcflow/errno)
(define-foreign %tcflow/errno
(tcflow (integer fdes) (integer action)) no-declare ; Ultrix
(to-scheme integer errno_or_false))
;;; Baud rate translation
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; We should just move these guys out to the tty-consts file.
;;; We currently search a vector of (code . speed) pairs.
(define (encode-baud-rate speed) ; 9600 -> value of BAUD/9600
(do ((i (- (vector-length baud-rates) 1) (- i 1)))
((eqv? (cdr (vector-ref baud-rates i)) speed)
(car (vector-ref baud-rates i)))
(if (< i 0) (error "Unknown baud rate." speed))))
(define (decode-baud-rate code) ; BAUD/9600 -> 9600
(do ((i (- (vector-length baud-rates) 1) (- i 1)))
((eqv? (car (vector-ref baud-rates i)) code)
(cdr (vector-ref baud-rates i)))
(if (< i 0) (error "Unknown baud rate code." code))))
;;; Set/Get tty process group
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (set-tty-process-group port/fd proc-group)
(sleazy-call/fdes port/fd
(lambda (fd)
(%set-tty-process-group fd (if (integer? proc-group)
proc-group
(proc:pid proc-group))))))
(define-errno-syscall (%set-tty-process-group fdes pid)
%set-tty-process-group/errno)
(define-foreign %set-tty-process-group/errno (tcsetpgrp (fixnum fdes)
(pid_t pid))
no-declare ; Ultrix
(to-scheme integer errno_or_false))
(define (tty-process-group port/fd)
(sleazy-call/fdes port/fd %tty-process-group))
(define-errno-syscall (%tty-process-group fd) %tty-process-group/errno
pid)
(define-foreign %tty-process-group/errno (tcgetpgrp (fixnum fdes))
no-declare ; Ultrix
(multi-rep (to-scheme pid_t errno_or_false)
pid_t))
;;; (open-control-tty fname [flags])
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; Open a control tty, return a port.
;;; This procedure is only guaranteed to work when the process doesn't already
;;; have a control tty -- e.g., right after a (BECOME-PROCESS-LEADER) call.
;;; This limted functionality is about all we can provide portably across BSD,
;;; SunOS, and SVR4.
(define (open-control-tty ttyname . maybe-flags)
(let ((flags (:optional maybe-flags open/read+write)))
(let lp ()
(receive (errno fd) (open-control-tty/errno ttyname flags)
(cond ((not errno)
(let ((access (bitwise-and flags open/access-mask)))
((if (or (= access open/read)
(= access open/read+write))
make-input-fdport
make-output-fdport)
fd 1)))
((= errno/intr errno) (lp))
(else (errno-error errno open-control-tty ttyname flags)))))))
(define-foreign open-control-tty/errno (open_ctty (string ttyname)
(fixnum flags))
(multi-rep (to-scheme integer errno_or_false)
integer))
;;; Random bits & pieces: isatty ttyname ctermid
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; (tty? fd/port) -> boolean
;;; (tty-file-name fd/port) -> string
;;; (control-tty-file-name) -> string
(define-foreign %tty? (isatty (integer fd)) bool)
(define (tty? fd/port) (sleazy-call/fdes fd/port %tty?))
(define-foreign %tty-file-name/errno (ttyname (integer fd))
(multi-rep (to-scheme static-string errno_on_zero_or_false)
static-string))
(define-errno-syscall (%tty-file-name fd) %tty-file-name/errno
tty-name)
(define (tty-file-name fd/port) (sleazy-call/fdes fd/port %tty-file-name))
(define-foreign %ctermid/errno (scm_ctermid)
(multi-rep (to-scheme static-string errno_on_zero_or_false)
static-string))
(define-errno-syscall (control-tty-file-name) %ctermid/errno term-name)