72 lines
2.2 KiB
C
Executable File
72 lines
2.2 KiB
C
Executable File
/* Copyright (c) 2002, 2005, Joerg Wunsch
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $Id: fgetc.c,v 1.5 2005/09/06 18:49:15 joerg_wunsch Exp $ */
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#include <stdio.h>
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#include "stdio_private.h"
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int
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fgetc(FILE *stream)
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{
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int rv;
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if ((stream->flags & __SRD) == 0)
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return EOF;
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if ((stream->flags & __SUNGET) != 0) {
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stream->flags &= ~__SUNGET;
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stream->len++;
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return stream->unget;
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}
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if (stream->flags & __SSTR) {
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rv = *stream->buf;
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if (rv == '\0') {
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stream->flags |= __SEOF;
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return EOF;
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} else {
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stream->buf++;
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}
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} else {
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rv = stream->get(stream);
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if (rv < 0) {
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/* if != _FDEV_ERR, assume it's _FDEV_EOF */
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stream->flags |= (rv == _FDEV_ERR)? __SERR: __SEOF;
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return EOF;
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}
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}
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stream->len++;
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return (unsigned char)rv;
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}
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