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Rethink the whole line discipline architecture. Instead of having

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multiple switchable line disciplines, we now have a single unified
one which changes its behaviour based on option settings. Each
option setting can be suggested by the back end and/or the terminal
handler, and can be forcibly overridden by the configuration. Local
echo and local line editing are separate, independently switchable,
options.

[originally from svn r895]
This commit is contained in:
Simon Tatham
2001-01-24 14:08:20 +00:00
parent 89505459e3
commit 7a79df8fe6
12 changed files with 329 additions and 217 deletions
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44
terminal.c
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@ -78,6 +78,8 @@ static int use_bce; /* Use Background coloured erase */
static int blinker; /* When blinking is the cursor on ? */
static int tblinker; /* When the blinking text is on */
static int blink_is_real; /* Actually blink blinking text */
static int term_echoing; /* Does terminal want local echo? */
static int term_editing; /* Does terminal want local edit? */
static unsigned long cset_attr[2];
@ -183,6 +185,8 @@ static void power_on(void) {
rvideo = 0;
cursor_on = 1;
save_attr = curr_attr = ATTR_DEFAULT;
term_editing = term_echoing = FALSE;
ldisc_send(NULL, 0); /* cause ldisc to notice changes */
app_cursor_keys = cfg.app_cursor;
app_keypad_keys = cfg.app_keypad;
use_bce = cfg.bce;
@ -707,6 +711,10 @@ static void toggle_mode (int mode, int query, int state) {
case 8: /* auto key repeat */
repeat_off = !state;
break;
case 10: /* set local edit mode */
term_editing = state;
ldisc_send(NULL, 0); /* cause ldisc to notice changes */
break;
case 25: /* enable/disable cursor */
compatibility2(OTHER,VT220);
cursor_on = state;
@ -724,16 +732,8 @@ static void toggle_mode (int mode, int query, int state) {
insert = state;
break;
case 12: /* set echo mode */
/*
* This may be very good in smcup and rmcup (or smkx & rmkx) if you
* have a long RTT and the telnet client/daemon doesn't understand
* linemode.
*
* DONT send TS_RECHO/TS_LECHO; the telnet daemon tries to fix the
* tty and _really_ confuses some programs.
*/
compatibility2(OTHER,VT220);
ldisc = (state? &ldisc_simple : &ldisc_term);
term_echoing = !state;
ldisc_send(NULL, 0); /* cause ldisc to notice changes */
break;
case 20: /* Return sends ... */
cr_lf_return = state;
@ -804,7 +804,7 @@ static int beep_overload = 0;
* An xterm returns "xterm" (5 characters)
*/
compatibility(OTHER);
ldisc->send ("PuTTY", 5);
ldisc_send ("PuTTY", 5);
break;
case '\007':
beep_count++;
@ -1056,7 +1056,7 @@ static int beep_overload = 0;
break;
case 'Z': /* terminal type query */
compatibility(VT100);
ldisc->send (id_string, strlen(id_string));
ldisc_send (id_string, strlen(id_string));
break;
case 'c': /* restore power-on settings */
compatibility(VT100);
@ -1199,16 +1199,16 @@ static int beep_overload = 0;
case 'c': /* terminal type query */
compatibility(VT100);
/* This is the response for a VT102 */
ldisc->send (id_string, strlen(id_string));
ldisc_send (id_string, strlen(id_string));
break;
case 'n': /* cursor position query */
if (esc_args[0] == 6) {
char buf[32];
sprintf (buf, "\033[%d;%dR", curs_y + 1, curs_x + 1);
ldisc->send (buf, strlen(buf));
ldisc_send (buf, strlen(buf));
}
else if (esc_args[0] == 5) {
ldisc->send ("\033[0n", 4);
ldisc_send ("\033[0n", 4);
}
break;
case 'h': /* toggle modes to high */
@ -1420,7 +1420,7 @@ static int beep_overload = 0;
if (i == 0 || i == 1) {
strcpy (buf, "\033[2;1;1;112;112;1;0x");
buf[2] += i;
ldisc->send (buf, 20);
ldisc_send (buf, 20);
}
}
break;
@ -1692,7 +1692,7 @@ static int beep_overload = 0;
termstate = VT52_Y1;
break;
case 'Z':
ldisc->send ("\033/Z", 3);
ldisc_send ("\033/Z", 3);
break;
case '=':
app_keypad_keys = TRUE;
@ -2162,7 +2162,7 @@ void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) {
/* Assume a small paste will be OK in one go. */
if (paste_len<256) {
ldisc->send (paste_buffer, paste_len);
ldisc_send (paste_buffer, paste_len);
if (paste_buffer) sfree(paste_buffer);
paste_buffer = 0;
paste_pos = paste_hold = paste_len = 0;
@ -2203,7 +2203,7 @@ void term_paste() {
if (paste_buffer[paste_pos + n++] == '\r')
break;
}
ldisc->send (paste_buffer+paste_pos, n);
ldisc_send (paste_buffer+paste_pos, n);
paste_pos += n;
if (paste_pos < paste_len) {
@ -2226,6 +2226,12 @@ void term_deselect (void) {
term_update();
}
int term_ldisc(int option) {
if (option == LD_ECHO) return term_echoing;
if (option == LD_EDIT) return term_editing;
return FALSE;
}
/*
* from_backend(), to get data from the backend for the terminal.
*/