mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
3e4fd4b0ad
This change also pays off some of the remaining technical debt with stdio, file descriptors, and memory managemnt polyfills.
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 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ This program is free software; you can redistribute it and/or modify │
|
|
│ it under the terms of the GNU General Public License as published by │
|
|
│ the Free Software Foundation; version 2 of the License. │
|
|
│ │
|
|
│ This program is distributed in the hope that it will be useful, but │
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
|
│ General Public License for more details. │
|
|
│ │
|
|
│ You should have received a copy of the GNU General Public License │
|
|
│ along with this program; if not, write to the Free Software │
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
|
│ 02110-1301 USA │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/fmt/fmt.h"
|
|
#include "libc/stdio/stdio.h"
|
|
|
|
/**
|
|
* Decodes data from stream.
|
|
*
|
|
* To read a line of data from a well-formed trustworthy file:
|
|
*
|
|
* int x, y;
|
|
* char text[256];
|
|
* fscanf(f, "%d %d %s\n", &x, &y, text);
|
|
*
|
|
* Please note that this function is brittle by default, which makes it
|
|
* a good fit for yolo coding. With some toil it can be used in a way
|
|
* that makes it reasonably hardened although getline() may be better.
|
|
*
|
|
* @see libc/fmt/vcscanf.c
|
|
*/
|
|
int(fscanf)(FILE *stream, const char *fmt, ...) {
|
|
int rc;
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
rc = (vcscanf)((int (*)(void *))fgetc, (void *)ungetc, stream, fmt, va);
|
|
va_end(va);
|
|
return rc;
|
|
}
|