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teken, vt(4): Parse the "Cursor style" escape sequence

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The escape sequence (e.g. `^[[2 q`) was unsupported before and the
letter `q` was displayed as a typed character. The sequence is used by
Neovim for instance.

Now, it is properly parsed. However, it is ignored, so it won't change
the cursor style.

Because the escape sequence contains a space character, the
`gensequences` script had to be modified to support that. In the
`sequences` file, a space is represented as the string `SP`.
This commit is contained in:
Jean-Sébastien Pédron 2018-05-20 14:21:20 +00:00
parent b7faa59dee
commit 8dcd2ed3c9
3 changed files with 30 additions and 1 deletions
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11
sys/teken/gensequences
View File

@ -35,6 +35,15 @@ function die(msg) {
function cchar(str) {
if (str == "^[")
return "\\x1B";
if (str == "SP")
return " ";
return str;
}
function csequence(str) {
if (str == "SP")
return " ";
return str;
}
@ -57,7 +66,7 @@ while (getline > 0) {
prefix = "";
l_prefix_name[""] = "teken_state_init";
for (i = 1; i < nsequences; i++) {
n = prefix sequence[i];
n = prefix csequence(sequence[i]);
l_prefix_parent[n] = prefix;
l_prefix_suffix[n] = sequence[i];
if (!l_prefix_name[n])

1
sys/teken/sequences
View File

@ -48,6 +48,7 @@ CUF Cursor Forward ^[ [ a n
CUP Cursor Position ^[ [ H n n
CUP Cursor Position ^[ [ f n n
CUU Cursor Up ^[ [ A n
CS Cursor style ^[ [ SP q r
DA1 Primary Device Attributes ^[ [ c r
DA2 Secondary Device Attributes ^[ [ > c r
DC Delete character ^[ [ P n

19
sys/teken/teken_subr.h
View File

@ -371,6 +371,25 @@ teken_subr_cursor_up(teken_t *t, unsigned int nrows)
teken_funcs_cursor(t);
}
static void
teken_subr_cursor_style(teken_t *t, unsigned int style)
{
/* TODO */
/*
* CSI Ps SP q
* Set cursor style (DECSCUSR), VT520.
* Ps = 0 -> blinking block.
* Ps = 1 -> blinking block (default).
* Ps = 2 -> steady block.
* Ps = 3 -> blinking underline.
* Ps = 4 -> steady underline.
* Ps = 5 -> blinking bar (xterm).
* Ps = 6 -> steady bar (xterm).
*/
}
static void
teken_subr_delete_character(const teken_t *t, unsigned int ncols)
{