cosmopolitan/dsp/tty/setbgfg24.c

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2020-06-15 14:18:57 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "dsp/tty/itoa8.h"
#include "dsp/tty/quant.h"
#include "libc/str/str.h"
static char *rgbcpy(char *p, struct TtyRgb bg) {
memcpy(p, ";2;\0", 4);
p = itoa8(p + 3, bg.r);
*p++ = ';';
p = itoa8(p, bg.g);
*p++ = ';';
return itoa8(p, bg.b);
}
char *setbg24_(char *p, struct TtyRgb bg) {
memcpy(p, "\e[48", 4);
p = rgbcpy(p + 4, bg);
*p++ = 'm';
return p;
}
char *setfg24_(char *p, struct TtyRgb fg) {
memcpy(p, "\e[38", 4);
p = rgbcpy(p + 4, fg);
*p++ = 'm';
return p;
}
char *setbgfg24_(char *p, struct TtyRgb bg, struct TtyRgb fg) {
memcpy(p, "\e[48", 4);
p = rgbcpy(p + 4, bg);
memcpy(p, ";38\0", 4);
p = rgbcpy(p + 3, fg);
*p++ = 'm';
return p;
}