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Add a couple of format c/f and c/b to emit colours.

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This commit is contained in:
nicm
2026-07-01 13:12:17 +00:00
parent 724f85d275
commit e9396e59d9
5 changed files with 92 additions and 8 deletions
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52
colour.c
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@@ -290,6 +290,58 @@ colour_tostring(int c)
return ("invalid");
}
/* Convert colour to an SGR escape sequence. */
const char *
colour_toescape(struct client *c, int colour, int bg)
{
static char s[32];
u_char r, g, b;
int n, flags = (TERM_256COLOURS|TERM_RGBCOLOURS);
u_int o = (bg ? 40 : 30);
if (c != NULL && (c->tty.flags & TTY_OPENED) && c->tty.term != NULL)
flags = c->tty.term->flags;
if (colour & COLOUR_FLAG_THEME) {
n = colour & 0xff;
if (c != NULL && (u_int)n < COLOUR_THEME_COUNT)
colour = c->theme_colours[n];
else
colour = colour_theme_terminal_colour(n);
}
if (colour == 8 || colour == 9) {
xsnprintf(s, sizeof s, "\033[%dm", o + 9);
return (s);
}
if ((~flags & TERM_RGBCOLOURS) & (colour & COLOUR_FLAG_RGB)) {
colour_split_rgb(colour, &r, &g, &b);
colour = colour_find_rgb(r, g, b);
}
if ((~flags & TERM_256COLOURS) & (colour & COLOUR_FLAG_256))
colour = colour_256to16(colour);
if (colour & COLOUR_FLAG_RGB) {
colour_split_rgb(colour, &r, &g, &b);
xsnprintf(s, sizeof s, "\033[%d;2;%u;%u;%um", o + 8, r, g, b);
return (s);
}
if (colour & COLOUR_FLAG_256) {
xsnprintf(s, sizeof s, "\033[%d;5;%um", o + 8, colour & 0xff);
return (s);
}
if (colour >= 0 && colour <= 7) {
xsnprintf(s, sizeof s, "\033[%dm", colour + o);
return (s);
}
if (colour >= 90 && colour <= 97) {
xsnprintf(s, sizeof s, "\033[%dm", colour + o - 30);
return (s);
}
return (NULL);
}
/* Convert background colour to theme. */
enum client_theme
colour_totheme(int c)