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42 lines
2.5 KiB
C
42 lines
2.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "dsp/tty/itoa8.h"
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#include "dsp/tty/quant.h"
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#include "libc/limits.h"
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static char *ansitoa(char *p, unsigned xt, unsigned base) {
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if (xt >= 8) xt -= 8, base += 60;
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return itoa8(p, xt + base);
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}
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static char *setansibgfg(char *p, unsigned bg, unsigned fg) {
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*p++ = '\e';
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*p++ = '[';
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if (bg != -1u) p = ansitoa(p, bg, 40);
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if (bg != -1u && fg != -1u) *p++ = ';';
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if (fg != -1u) p = ansitoa(p, fg, 30);
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*p++ = 'm';
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return p;
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}
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char *setbg16_(char *p, struct TtyRgb bg) { return setansibgfg(p, bg.xt, -1u); }
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char *setfg16_(char *p, struct TtyRgb fg) { return setansibgfg(p, -1u, fg.xt); }
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char *setbgfg16_(char *p, struct TtyRgb bg, struct TtyRgb fg) {
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return setansibgfg(p, bg.xt, fg.xt);
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}
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