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51 lines
2.5 KiB
C
51 lines
2.5 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=8 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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│ 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/stdio/lock.internal.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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static inline int PutsImpl(const char *s, FILE *f) {
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size_t n, r;
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if ((n = strlen(s))) {
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r = fwrite_unlocked(s, 1, n, f);
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if (!r) return -1;
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if (r < n) return r;
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}
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if (fputc_unlocked('\n', f) == -1) {
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if (feof_unlocked(f)) return n;
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return -1;
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}
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return n + 1;
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}
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/**
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* Writes string w/ trailing newline to stdout.
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*
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* @return non-negative number on success, or `EOF` on error with
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* `errno` set and the `ferror(stdout)` state is updated
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*/
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int puts(const char *s) {
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FILE *f;
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int bytes;
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f = stdout;
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flockfile(f);
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bytes = PutsImpl(s, f);
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funlockfile(f);
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return bytes;
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}
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