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csi: simplify handling of Set/Reset Mode (SM/RM) sequences

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Craig Barnes 2024-01-25 01:07:53 +00:00 • committed by Daniel Eklöf
parent 91b22ae21a
commit 44c0cf594b
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1 changed files with 18 additions and 33 deletions
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49
csi.c
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@ -1081,44 +1081,29 @@ csi_dispatch(struct terminal *term, uint8_t final)
break;
case 'h':
/* Set mode */
switch (vt_param_get(term, 0, 0)) {
case 2: /* Keyboard Action Mode - AM */
LOG_WARN("unimplemented: keyboard action mode (AM)");
break;
case 4: /* Insert Mode - IRM */
term->insert_mode = true;
case 'l': {
/* Set/Reset Mode (SM/RM) */
int param = vt_param_get(term, 0, 0);
bool sm = final == 'h';
if (param == 4) {
/* Insertion Replacement Mode (IRM) */
term->insert_mode = sm;
term_update_ascii_printer(term);
break;
}
case 12: /* Send/receive Mode - SRM */
LOG_WARN("unimplemented: send/receive mode (SRM)");
break;
case 20: /* Automatic Newline Mode - LNM */
/* TODO: would be easy to implemented; when active
* term_linefeed() would _also_ do a
* term_carriage_return() */
LOG_WARN("unimplemented: automatic newline mode (LNM)");
break;
/*
* ECMA-48 defines modes 1-22, all of which were optional
* (§7.1; "may have one state only") and are considered
* deprecated (§7.1) in the latest (5th) edition. xterm only
* documents modes 2, 4, 12 and 20, the last of which was
* outright removed (§8.3.106) in 5th edition ECMA-48.
*/
if (sm) {
LOG_WARN("SM with unimplemented mode: %d", param);
}
break;
case 'l':
/* Reset mode */
switch (vt_param_get(term, 0, 0)) {
case 4: /* Insert Mode - IRM */
term->insert_mode = false;
term_update_ascii_printer(term);
break;
case 2: /* Keyboard Action Mode - AM */
case 12: /* Send/receive Mode - SRM */
case 20: /* Automatic Newline Mode - LNM */
break;
}
break;
case 'r': {
int start = vt_param_get(term, 0, 1);