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Handle the various different forms of rgb colour strings.

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This commit is contained in:
nicm
2019-11-01 09:09:53 +00:00
parent ccdebead79
commit d9c95c900c
1 changed files with 58 additions and 4 deletions
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60
input.c
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@@ -2338,6 +2338,54 @@ input_top_bit_set(struct input_ctx *ictx)
return (0);
}
/* Parse colour from OSC. */
static int
input_osc_parse_colour(const char *p, u_int *r, u_int *g, u_int *b)
{
u_int rsize, gsize, bsize;
const char *cp, *s = p;
if (sscanf(p, "rgb:%x/%x/%x", r, g, b) != 3)
return (0);
p += 4;
cp = strchr(p, '/');
rsize = cp - p;
if (rsize == 1)
(*r) = (*r) | ((*r) << 4);
else if (rsize == 3)
(*r) >>= 4;
else if (rsize == 4)
(*r) >>= 8;
else if (rsize != 2)
return (0);
p = cp + 1;
cp = strchr(p, '/');
gsize = cp - p;
if (gsize == 1)
(*g) = (*g) | ((*g) << 4);
else if (gsize == 3)
(*g) >>= 4;
else if (gsize == 4)
(*g) >>= 8;
else if (gsize != 2)
return (0);
bsize = strlen(cp + 1);
if (bsize == 1)
(*b) = (*b) | ((*b) << 4);
else if (bsize == 3)
(*b) >>= 4;
else if (bsize == 4)
(*b) >>= 8;
else if (bsize != 2)
return (0);
log_debug("%s: %s = %02x%02x%02x", __func__, s, *r, *g, *b);
return (1);
}
/* Handle the OSC 4 sequence for setting (multiple) palette entries. */
static void
input_osc_4(struct input_ctx *ictx, const char *p)
@@ -2356,7 +2404,7 @@ input_osc_4(struct input_ctx *ictx, const char *p)
goto bad;
s = strsep(&next, ";");
if (sscanf(s, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3) {
if (!input_osc_parse_colour(s, &r, &g, &b)) {
s = next;
continue;
}
@@ -2381,7 +2429,10 @@ input_osc_10(struct input_ctx *ictx, const char *p)
u_int r, g, b;
char tmp[16];
if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3)
if (strcmp(p, "?") == 0)
return;
if (!input_osc_parse_colour(p, &r, &g, &b))
goto bad;
xsnprintf(tmp, sizeof tmp, "fg=#%02x%02x%02x", r, g, b);
options_set_style(wp->options, "window-style", 1, tmp);
@@ -2402,7 +2453,10 @@ input_osc_11(struct input_ctx *ictx, const char *p)
u_int r, g, b;
char tmp[16];
if (sscanf(p, "rgb:%2x/%2x/%2x", &r, &g, &b) != 3)
if (strcmp(p, "?") == 0)
return;
if (!input_osc_parse_colour(p, &r, &g, &b))
goto bad;
xsnprintf(tmp, sizeof tmp, "bg=#%02x%02x%02x", r, g, b);
options_set_style(wp->options, "window-style", 1, tmp);