cosmopolitan/tool/viz/printpixel.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/quant.h"
#include "dsp/tty/xtermname.h"
#include "libc/conv/conv.h"
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#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/ex.h"
#include "third_party/dtoa/dtoa.h"
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int main(int argc, char *argv[]) {
int i;
struct TtyRgb tty;
unsigned rgb, r, g, b;
if (argc < 2) {
fprintf(stderr, "Usage: %s RRGGBB...\n", program_invocation_name);
exit(EX_USAGE);
}
for (i = 1; i < argc; ++i) {
rgb = strtol(argv[i], NULL, 16);
b = (rgb & 0x0000ff) >> 000;
g = (rgb & 0x00ff00) >> 010;
r = (rgb & 0xff0000) >> 020;
tty = rgb2tty(r, g, b);
printf("\e[48;5;%dm \e[0m %d \\e[48;5;%dm %s #%02x%02x%02x\n", tty.xt,
tty.xt, tty.xt, indexdoublenulstring(kXtermName, tty.xt), r, g, b);
}
return 0;
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}