mirrors/foot
1
0
Fork 0
mirror of https://codeberg.org/dnkl/foot.git synced 2026-02-04 04:06:06 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

dcs: xtgettcap: use custom put() handler

Browse source 
Grow buffer exponentially, since XTGETTCAP requests can,
theoretically, be very large.
This commit is contained in:
Daniel Eklöf 2022-03-19 20:22:59 +01:00
parent af88c19561
commit 67a228bf4b
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
1 changed files with 21 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

26
dcs.c
View file

@ -16,17 +16,14 @@ ensure_size(struct terminal *term, size_t required_size)
if (required_size <= term->vt.dcs.size)
return true;
size_t new_size = (required_size + 127) / 128 * 128;
xassert(new_size > 0);
uint8_t *new_data = realloc(term->vt.dcs.data, new_size);
uint8_t *new_data = realloc(term->vt.dcs.data, required_size);
if (new_data == NULL) {
LOG_ERRNO("failed to increase size of DCS buffer");
return false;
}
term->vt.dcs.data = new_data;
term->vt.dcs.size = new_size;
term->vt.dcs.size = required_size;
return true;
}
@ -180,6 +177,24 @@ out:
free(name);
}
static void
xtgettcap_put(struct terminal *term, uint8_t c)
{
struct vt *vt = &term->vt;
/* Grow buffer expontentially */
if (vt->dcs.idx >= vt->dcs.size) {
size_t new_size = vt->dcs.size * 2;
if (new_size == 0)
new_size = 128;
if (!ensure_size(term, new_size))
return;
}
vt->dcs.data[vt->dcs.idx++] = c;
}
static void
xtgettcap_unhook(struct terminal *term)
{
@ -445,6 +460,7 @@ dcs_hook(struct terminal *term, uint8_t final)
case '+':
switch (final) {
case 'q': /* XTGETTCAP */
term->vt.dcs.put_handler = &xtgettcap_put;
term->vt.dcs.unhook_handler = &xtgettcap_unhook;
break;
}