Added source code

2023-03-18 20:26:52 +02:00
commit f3ea0095df
188 changed files with 48888 additions and 0 deletions
@@ -0,0 +1,178 @@
+/*
+ * TTY setup routines. These are the TERMIO-style (System V) routines.
+ */
+
+static struct termio _raw_tty, _original_tty;
+
+/*
+ * current raw state
+ */
+static short _inraw = 0;
+
+/*
+ *  Set up the tty driver
+ *
+ * Args: state -- which state to put it in. 1 means go into raw (cbreak),
+ *                0 out of raw.
+ *
+ * Result: returns 0 if successful and -1 if not.
+ */
+int
+Raw(state)
+int state;
+{
+    /** state is either ON or OFF, as indicated by call **/
+    /* Check return code only on first call. If it fails we're done for and
+       if it goes OK the others will probably go OK too. */
+
+    if(state == 0 && _inraw){
+        /*----- restore state to original -----*/
+        if(ioctl(STDIN_FD, TCSETAW, &_original_tty) < 0)
+          return(-1);
+
+        _inraw = 0;
+    }
+    else if(state == 1 && ! _inraw){
+        /*----- Go into raw mode (cbreak actually) ----*/
+        if(ioctl(STDIN_FD, TCGETA, &_original_tty) < 0)
+          return(-1);
+
+	(void)ioctl(STDIN_FD, TCGETA, &_raw_tty);    /** again! **/
+	_raw_tty.c_lflag &= ~(ICANON | ECHO);	/* noecho raw mode  */
+ 	_raw_tty.c_lflag &= ~ISIG;		/* disable signals */
+ 	_raw_tty.c_iflag &= ~ICRNL;		/* turn off CR->NL on input  */
+ 	_raw_tty.c_oflag &= ~ONLCR;		/* turn off NL->CR on output */
+	_raw_tty.c_cc[VMIN]  = 1;		/* min # of chars to queue   */
+	_raw_tty.c_cc[VTIME] = 0;		/* min time to wait for input*/
+	_raw_tty.c_cc[VINTR] = ctrl('C');	/* make it our special char */
+	_raw_tty.c_cc[VQUIT] = 0;
+	(void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	_inraw = 1;
+    }
+
+    return(0);
+}
+
+
+/*
+ *  Set up the tty driver to use XON/XOFF flow control
+ *
+ * Args: state -- True to make sure XON/XOFF turned on, FALSE off.
+ *
+ * Result: none.
+ */
+void
+xonxoff_proc(state)
+int state;
+{
+    if(_inraw){
+	if(state){
+	    if(!(_raw_tty.c_iflag & IXON)){
+		_raw_tty.c_iflag |= IXON;	/* turn ON ^S/^Q on input   */
+		(void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	    }
+	}
+	else{
+	    if(_raw_tty.c_iflag & IXON){
+		_raw_tty.c_iflag &= ~IXON;	/* turn off ^S/^Q on input   */
+		(void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	    }
+	}
+    }
+}
+
+
+/*
+ *  Set up the tty driver to do LF->CR translation
+ *
+ * Args: state -- True to turn on translation, false to write raw LF's
+ *
+ * Result: none.
+ */
+void
+crlf_proc(state)
+int state;
+{
+    if(_inraw){
+	if(state){				/* turn ON NL->CR on output */
+	    if(!(_raw_tty.c_oflag & ONLCR)){
+		_raw_tty.c_oflag |= ONLCR;
+		(void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	    }
+	}
+	else{					/* turn OFF NL-CR on output */
+	    if(_raw_tty.c_oflag & ONLCR){
+		_raw_tty.c_oflag &= ~ONLCR;
+		(void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	    }
+	}
+    }
+}
+
+
+/*
+ *  Set up the tty driver to hanle interrupt char
+ *
+ * Args: state -- True to turn on interrupt char, false to not
+ *
+ * Result: tty driver that'll send us SIGINT or not
+ */
+void
+intr_proc(state)
+int state;
+{
+    if(_inraw){
+	if(state){
+	    _raw_tty.c_lflag |= ISIG;		/* enable signals */
+	    (void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	}
+	else{
+	    _raw_tty.c_lflag &= ~ISIG;		/* disable signals */
+	    (void)ioctl(STDIN_FD, TCSETAW, &_raw_tty);
+	}
+    }
+}
+
+
+/*
+ * Discard any pending input characters
+ *
+ * Args:  none
+ *
+ * Result: pending input buffer flushed
+ */
+void
+flush_input()
+{
+    ioctl(STDIN_FD, TCFLSH, 0);
+}
+
+
+/*
+ * Turn off hi bit stripping
+ */
+void
+bit_strip_off()
+{
+}
+
+
+/*
+ * Turn off quit character (^\) if possible
+ */
+void
+quit_char_off()
+{
+}
+
+
+/*
+ * Returns TRUE if tty is < 4800, 0 otherwise.
+ */
+int
+ttisslow()
+{
+    return((_raw_tty.c_cflag&CBAUD) < (unsigned int)B4800);
+}
+
+