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=2 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/fmt/fmt.h"
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#include "libc/stdio/stdio.h"
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/**
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* Decodes data from stream.
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*
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* To read a line of data from a well-formed trustworthy file:
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*
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* int x, y;
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* char text[256];
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* fscanf(f, "%d %d %s\n", &x, &y, text);
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*
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* Please note that this function is brittle by default, which makes it
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* a good fit for yolo coding. With some toil it can be used in a way
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* that makes it reasonably hardened although getline() may be better.
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*
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* @see libc/fmt/vcscanf.c
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*/
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int(fscanf)(FILE *stream, const char *fmt, ...) {
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int rc;
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va_list va;
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va_start(va, fmt);
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rc = (vcscanf)((int (*)(void *))fgetc, (void *)ungetc, stream, fmt, va);
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va_end(va);
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return rc;
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}
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