44 lines
2.6 KiB
C
44 lines
2.6 KiB
C
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/*-*- 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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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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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