60 lines
2.6 KiB
C
60 lines
2.6 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 2021 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 "libc/bits/bits.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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static const char kWcTypeNames[][8] = {
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"alnum", //
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"alpha", //
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"blank", //
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"cntrl", //
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"digit", //
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"graph", //
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"lower", //
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"print", //
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"punct", //
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"space", //
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"upper", //
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"xdigit", //
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};
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/**
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* Returns number representing character class name.
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*
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* @param s can be "alnum", "alpha", "blank", "cntrl", "digit", "graph",
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* "lower", "print", "punct", "space", "upper", "xdigit"
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* @return nonzero id or 0 if not found
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*/
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wctype_t wctype(const char *s) {
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int i;
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char b[8];
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for (i = 0; i < 8; ++i) {
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b[i] = *s ? *s++ : 0;
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}
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if (!*s) {
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for (i = 0; i < ARRAYLEN(kWcTypeNames); ++i) {
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if (READ64LE(b) == READ64LE(kWcTypeNames[i])) {
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return i + 1;
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}
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}
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}
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return 0;
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}
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