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https://github.com/jart/cosmopolitan.git
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8bdaddd81d
The stdio reader thread now appears to be working recursively along cosmopolitan subprocesses. For example, it's now possible to launch vim.com from the unbourne.com bestline repl, thanks to hacks plus a bug fix to select() timeouts.
123 lines
4.2 KiB
C
123 lines
4.2 KiB
C
/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
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│vi: set et ft=c ts=8 tw=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/errno.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/locale.h"
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#include "libc/str/str.h"
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#include "libc/thread/tls.h"
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asm(".ident\t\"\\n\\n\
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Musl libc (MIT License)\\n\
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Copyright 2005-2014 Rich Felker, et. al.\"");
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asm(".include \"libc/disclaimer.inc\"");
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// clang-format off
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static ssize_t vstrfmon_l(char *s, size_t n, locale_t loc, const char *fmt, va_list ap)
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{
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size_t l;
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double x;
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int left;
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int lp, rp, w, fw;
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char *s0=s;
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for (; n && *fmt; ) {
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if (*fmt != '%') {
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literal:
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*s++ = *fmt++;
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n--;
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continue;
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}
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fmt++;
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if (*fmt == '%') goto literal;
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left = 0;
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for (; ; fmt++) {
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switch (*fmt) {
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case '=':
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continue;
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case '^':
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continue;
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case '(':
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case '+':
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continue;
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case '!':
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continue;
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case '-':
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left = 1;
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continue;
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}
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break;
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}
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for (fw=0; isdigit(*fmt); fmt++)
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fw = 10*fw + (*fmt-'0');
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lp = 0;
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rp = 2;
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if (*fmt=='#') for (lp=0, fmt++; isdigit(*fmt); fmt++)
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lp = 10*lp + (*fmt-'0');
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if (*fmt=='.') for (rp=0, fmt++; isdigit(*fmt); fmt++)
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rp = 10*rp + (*fmt-'0');
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w = lp + 1 + rp;
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if (!left && fw>w) w = fw;
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x = va_arg(ap, double);
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l = snprintf(s, n, "%*.*f", w, rp, x);
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if (l >= n) {
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errno = E2BIG;
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return -1;
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}
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s += l;
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n -= l;
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}
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return s-s0;
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}
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ssize_t strfmon_l(char *restrict s, size_t n, locale_t loc, const char *restrict fmt, ...)
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{
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va_list ap;
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ssize_t ret;
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va_start(ap, fmt);
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ret = vstrfmon_l(s, n, loc, fmt, ap);
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va_end(ap);
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return ret;
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}
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ssize_t strfmon(char *restrict s, size_t n, const char *restrict fmt, ...)
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{
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va_list ap;
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ssize_t ret;
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va_start(ap, fmt);
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ret = vstrfmon_l(s, n, (locale_t)__get_tls()->tib_locale, fmt, ap);
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va_end(ap);
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return ret;
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}
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