This is exp_tty.c in view mode; [Download] [Up]
/* exp_tty.c - tty support routines */
#include <stdio.h>
#include "exp_conf.h"
#include "tcl.h"
#include "exp_global.h"
#include "exp_rename.h"
#include "exp_tty.h"
#include "exp_log.h"
#include "exp_command.h"
#include "exp_main.h"
static int is_raw = FALSE;
static int is_noecho = FALSE;
int exp_ioctled_devtty = FALSE;
exp_tty tty_current, tty_cooked;
exp_tty exp_tty_original;
int
exp_israw()
{
return is_raw;
}
int
exp_isecho()
{
return !is_noecho;
}
/* if set == 1, set it to raw, else unset it */
void
exp_tty_raw(set)
int set;
{
if (set == 1) {
is_raw = TRUE;
#if defined(HAVE_TERMIOS) || defined(HAVE_TERMIO) /* had POSIX too */
tty_current.c_iflag = 0;
tty_current.c_oflag = 0;
tty_current.c_lflag &= ECHO; /* disable everything except echo */
tty_current.c_cc[VMIN] = 1;
tty_current.c_cc[VTIME] = 0;
} else {
tty_current.c_iflag = tty_cooked.c_iflag;
tty_current.c_oflag = tty_cooked.c_oflag;
tty_current.c_lflag = tty_cooked.c_lflag;
tty_current.c_cc[VMIN] = tty_cooked.c_cc[VMIN];
tty_current.c_cc[VTIME] = tty_cooked.c_cc[VTIME];
#else
# if defined(HAVE_SGTTYB)
tty_current.sg_flags |= RAW;
} else {
tty_current.sg_flags = tty_cooked.sg_flags;
# endif
#endif
is_raw = FALSE;
}
}
void
exp_tty_echo(set)
int set;
{
if (set == 1) {
is_noecho = FALSE;
#if defined(HAVE_TERMIOS) || defined(HAVE_TERMIO) /* had POSIX too */
tty_current.c_lflag |= ECHO;
} else {
tty_current.c_lflag &= ~ECHO;
#else
tty_current.sg_flags |= ECHO;
} else {
tty_current.sg_flags &= ~ECHO;
#endif
is_noecho = TRUE;
}
}
/* returns 0 if nothing changed */
/* if something changed, the out parameters are changed as well */
int
exp_tty_raw_noecho(interp,tty_old,was_raw,was_echo)
Tcl_Interp *interp;
exp_tty *tty_old;
int *was_raw, *was_echo;
{
if (exp_disconnected) return(0);
if (is_raw && is_noecho) return(0);
if (exp_dev_tty == -1) return(0);
*tty_old = tty_current; /* save old parameters */
*was_raw = is_raw;
*was_echo = !is_noecho;
debuglog("tty_raw_noecho: was raw = %d echo = %d\r\n",is_raw,!is_noecho);
exp_tty_raw(1);
exp_tty_echo(-1);
#ifdef POSIX
if (tcsetattr(exp_dev_tty, TCSADRAIN, &tty_current) == -1) {
#else
if (ioctl(exp_dev_tty, TCSETSW, &tty_current) == -1) {
/***
if (ioctl(exp_dev_tty, TIOCSETP, &tty_current) == -1) {
***/
#endif
errorlog("ioctl(raw): %s\r\n",sys_errlist[errno]);
exp_exit(interp,-1);
}
exp_ioctled_devtty = TRUE;
return(1);
}
/* returns 0 if nothing changed */
/* if something changed, the out parameters are changed as well */
int
exp_tty_cooked_echo(interp,tty_old,was_raw,was_echo)
Tcl_Interp *interp;
exp_tty *tty_old;
int *was_raw, *was_echo;
{
if (exp_disconnected) return(0);
if (!is_raw && !is_noecho) return(0);
if (exp_dev_tty == -1) return(0);
*tty_old = tty_current; /* save old parameters */
*was_raw = is_raw;
*was_echo = !is_noecho;
debuglog("tty_cooked_echo: was raw = %d echo = %d\r\n",is_raw,!is_noecho);
exp_tty_raw(-1);
exp_tty_echo(1);
#ifdef POSIX
if (tcsetattr(exp_dev_tty, TCSADRAIN, &tty_current) == -1) {
#else
if (ioctl(exp_dev_tty, TCSETSW, &tty_current) == -1) {
/***
if (ioctl(exp_dev_tty, TIOCSETP, &tty_current) == -1) {
***/
#endif
errorlog("ioctl(noraw): %s\r\n",sys_errlist[errno]);
exp_exit(interp,-1);
}
exp_ioctled_devtty = TRUE;
return(1);
}
void
exp_tty_set(interp,tty,raw,echo)
Tcl_Interp *interp;
exp_tty *tty;
int raw;
int echo;
{
#ifdef POSIX
if (tcsetattr(exp_dev_tty, TCSADRAIN, tty) == -1) {
#else
if (ioctl(exp_dev_tty, TCSETSW, tty) == -1) {
/***
if (ioctl(exp_dev_tty, TIOCSETP, tty) == -1) {
***/
#endif
errorlog("ioctl(set): %s\r\n",sys_errlist[errno]);
exp_exit(interp,-1);
}
is_raw = raw;
is_noecho = !echo;
tty_current = *tty;
debuglog("tty_set: raw = %d, echo = %d\r\n",is_raw,!is_noecho);
exp_ioctled_devtty = TRUE;
}
void
exp_init_tty()
{
extern exp_tty exp_tty_original;
/* save original user tty-setting in 'cooked', just in case user */
/* asks for it without earlier telling us what cooked means to them */
tty_cooked = exp_tty_original;
/* save our current idea of the terminal settings */
tty_current = exp_tty_original;
setbuf(stdout,(char *)0); /* unbuffer stdout */
}
/* take strings with newlines and insert carriage-returns. This allows user */
/* to write send_user strings without always putting in \r. */
/* If len == 0, use strlen to compute it */
/* NB: if terminal is not in raw mode, nothing is done. */
char *
exp_cook(s,len)
char *s;
int *len; /* current and new length of s */
{
static int destlen = 0;
static char *dest = 0;
char *d; /* ptr into dest */
unsigned int need;
if (s == 0) return("<null>");
if (!is_raw) return(s);
/* worst case is every character takes 2 to represent */
need = 1 + 2*(len?*len:strlen(s));
if (need > destlen) {
if (dest) free(dest);
dest = ckalloc(need);
destlen = need;
}
for (d = dest;*s;s++) {
if (*s == '\n') {
*d++ = '\r';
*d++ = '\n';
} else {
*d++ = *s;
}
}
*d = '\0';
if (len) *len = d-dest;
return(dest);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.