45 lines
2.5 KiB
C
45 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/errno.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/internal.h"
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#include "libc/stdio/stdio.h"
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/**
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* Writes data to stream.
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*
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* @param stride specifies the size of individual items
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* @param count is the number of strides to fetch
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* @return count on success, [0,count) on EOF, 0 on error or count==0
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*/
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size_t fwrite(const void *data, size_t stride, size_t count, FILE *f) {
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size_t i, n;
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const unsigned char *p;
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for (n = stride * count, p = data, i = 0; i < n; ++i) {
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if (fputc(p[i], f) == -1) {
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if (!(i % stride)) {
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return i / stride;
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} else {
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return __fseterr(f, EOVERFLOW);
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}
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}
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}
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return count;
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}
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