mirror of
https://github.com/jart/cosmopolitan.git
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bb815eafaf
We now have implement all of Musl's localization code, the same way that Musl implements localization. You may need setlocale(LC_ALL, "C.UTF-8"), just in case anything stops working as expected.
72 lines
3.6 KiB
C
72 lines
3.6 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │
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╚──────────────────────────────────────────────────────────────────────────────╝
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│ │
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│ Musl Libc │
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│ Copyright © 2005-2014 Rich Felker, et al. │
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│ │
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│ Permission is hereby granted, free of charge, to any person obtaining │
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│ a copy of this software and associated documentation files (the │
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│ "Software"), to deal in the Software without restriction, including │
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│ without limitation the rights to use, copy, modify, merge, publish, │
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│ distribute, sublicense, and/or sell copies of the Software, and to │
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│ permit persons to whom the Software is furnished to do so, subject to │
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│ the following conditions: │
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│ │
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│ The above copyright notice and this permission notice shall be │
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│ included in all copies or substantial portions of the Software. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
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│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
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│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
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│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
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│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
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│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
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│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
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│ │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/str/str.h"
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#include "libc/str/locale.internal.h"
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__static_yoink("musl_libc_notice");
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#pragma GCC diagnostic ignored "-Wparentheses"
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static inline uint32_t swapc(uint32_t x, int c)
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{
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return c ? x>>24 | x>>8&0xff00 | x<<8&0xff0000 | x<<24 : x;
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}
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const char *__mo_lookup(const void *p, size_t size, const char *s)
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{
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const uint32_t *mo = p;
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int sw = *mo - 0x950412de;
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uint32_t b = 0, n = swapc(mo[2], sw);
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uint32_t o = swapc(mo[3], sw);
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uint32_t t = swapc(mo[4], sw);
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if (n>=size/4 || o>=size-4*n || t>=size-4*n || ((o|t)%4))
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return 0;
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o/=4;
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t/=4;
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for (;;) {
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uint32_t ol = swapc(mo[o+2*(b+n/2)], sw);
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uint32_t os = swapc(mo[o+2*(b+n/2)+1], sw);
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if (os >= size || ol >= size-os || ((char *)p)[os+ol])
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return 0;
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int sign = strcmp(s, (char *)p + os);
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if (!sign) {
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uint32_t tl = swapc(mo[t+2*(b+n/2)], sw);
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uint32_t ts = swapc(mo[t+2*(b+n/2)+1], sw);
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if (ts >= size || tl >= size-ts || ((char *)p)[ts+tl])
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return 0;
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return (char *)p + ts;
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}
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else if (n == 1) return 0;
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else if (sign < 0)
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n /= 2;
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else {
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b += n/2;
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n -= n/2;
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}
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}
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return 0;
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}
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