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36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This file is part of LibMaxsi.
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LibMaxsi is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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LibMaxsi is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details.
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You should have received a copy of the GNU Lesser General Public License
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along with LibMaxsi. If not, see <http://www.gnu.org/licenses/>.
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ungetc.cpp
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Inserts data in front of the current read queue, allowing applications to
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peek the incoming data and pretend they didn't.
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*******************************************************************************/
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#include <stdio.h>
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#include <errno.h>
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extern "C" int ungetc(int c, FILE* fp)
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{
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if ( fp->numpushedback == _FILE_MAX_PUSHBACK ) { errno = ERANGE; return EOF; }
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unsigned char uc = c;
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fp->pushedback[fp->numpushedback++] = uc;
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return uc;
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}
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