mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
|
|
|
|
This file is part of the Sortix C Library.
|
|
|
|
The Sortix C Library is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The Sortix C Library 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 Lesser General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
ungetc.cpp
|
|
Inserts data in front of the current read queue, allowing applications to
|
|
peek the incoming data and pretend they didn't.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
|
|
extern "C" int ungetc(int c, FILE* fp)
|
|
{
|
|
if ( fp->numpushedback == _FILE_MAX_PUSHBACK ) { errno = ERANGE; return EOF; }
|
|
unsigned char uc = c;
|
|
fp->pushedback[fp->numpushedback++] = uc;
|
|
return uc;
|
|
}
|