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Update Musl Libc code

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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.
This commit is contained in:
Justine Tunney 2024-07-30 09:14:57 -07:00
parent d0360bf4bd
commit bb815eafaf
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GPG key ID: BE714B4575D6E328
116 changed files with 6525 additions and 5523 deletions
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150
third_party/musl/mbsrtowcs.c vendored Normal file
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/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
│ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │
╚──────────────────────────────────────────────────────────────────────────────╝
│ │
│ Musl Libc │
│ Copyright © 2005-2014 Rich Felker, et al. │
│ │
│ Permission is hereby granted, free of charge, to any person obtaining │
│ a copy of this software and associated documentation files (the │
│ "Software"), to deal in the Software without restriction, including │
│ without limitation the rights to use, copy, modify, merge, publish, │
│ distribute, sublicense, and/or sell copies of the Software, and to │
│ permit persons to whom the Software is furnished to do so, subject to │
│ the following conditions: │
│ │
│ The above copyright notice and this permission notice shall be │
│ included in all copies or substantial portions of the Software. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │
│ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │
│ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │
│ IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY │
│ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, │
│ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE │
│ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
│ │
╚─────────────────────────────────────────────────────────────────────────────*/
#include <stdint.h>
#include <wchar.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "multibyte.h"
__static_yoink("musl_libc_notice");
#pragma GCC diagnostic ignored "-Wparentheses"
size_t mbsrtowcs(wchar_t *restrict ws, const char **restrict src, size_t wn, mbstate_t *restrict st)
{
const unsigned char *s = (const void *)*src;
size_t wn0 = wn;
unsigned c = 0;
if (st && (c = *(unsigned *)st)) {
if (ws) {
*(unsigned *)st = 0;
goto resume;
} else {
goto resume0;
}
}
if (MB_CUR_MAX==1) {
if (!ws) return strlen((const char *)s);
for (;;) {
if (!wn) {
*src = (const void *)s;
return wn0;
}
if (!*s) break;
c = *s++;
*ws++ = CODEUNIT(c);
wn--;
}
*ws = 0;
*src = 0;
return wn0-wn;
}
if (!ws) for (;;) {
#ifdef __GNUC__
typedef uint32_t __attribute__((__may_alias__)) w32;
if (*s-1u < 0x7f && (uintptr_t)s%4 == 0) {
while (!(( *(w32*)s | *(w32*)s-0x01010101) & 0x80808080)) {
s += 4;
wn -= 4;
}
}
#endif
if (*s-1u < 0x7f) {
s++;
wn--;
continue;
}
if (*s-SA > SB-SA) break;
c = bittab[*s++-SA];
resume0:
if (OOB(c,*s)) { s--; break; }
s++;
if (c&(1U<<25)) {
if (*s-0x80u >= 0x40) { s-=2; break; }
s++;
if (c&(1U<<19)) {
if (*s-0x80u >= 0x40) { s-=3; break; }
s++;
}
}
wn--;
c = 0;
} else for (;;) {
if (!wn) {
*src = (const void *)s;
return wn0;
}
#ifdef __GNUC__
typedef uint32_t __attribute__((__may_alias__)) w32;
if (*s-1u < 0x7f && (uintptr_t)s%4 == 0) {
while (wn>=5 && !(( *(w32*)s | *(w32*)s-0x01010101) & 0x80808080)) {
*ws++ = *s++;
*ws++ = *s++;
*ws++ = *s++;
*ws++ = *s++;
wn -= 4;
}
}
#endif
if (*s-1u < 0x7f) {
*ws++ = *s++;
wn--;
continue;
}
if (*s-SA > SB-SA) break;
c = bittab[*s++-SA];
resume:
if (OOB(c,*s)) { s--; break; }
c = (c<<6) | *s++-0x80;
if (c&(1U<<31)) {
if (*s-0x80u >= 0x40) { s-=2; break; }
c = (c<<6) | *s++-0x80;
if (c&(1U<<31)) {
if (*s-0x80u >= 0x40) { s-=3; break; }
c = (c<<6) | *s++-0x80;
}
}
*ws++ = c;
wn--;
c = 0;
}
if (!c && !*s) {
if (ws) {
*ws = 0;
*src = 0;
}
return wn0-wn;
}
errno = EILSEQ;
if (ws) *src = (const void *)s;
return -1;
}