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984c6729c1
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14789 87f5fb63-7c3d-0410-a384-fd976d0f7a62
123 lines
2.9 KiB
C
123 lines
2.9 KiB
C
/*
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* $Id: stdio_gets.c,v 1.2 2005-01-02 09:07:08 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2005 by Olaf Barthel <olsen@sourcery.han.de>
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* All rights reserved.
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*
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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
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* are met:
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*
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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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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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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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#ifndef _STDLIB_NULL_POINTER_CHECK_H
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#include "stdlib_null_pointer_check.h"
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#endif /* _STDLIB_NULL_POINTER_CHECK_H */
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/****************************************************************************/
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#ifndef _STDIO_HEADERS_H
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#include "stdio_headers.h"
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#endif /* _STDIO_HEADERS_H */
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/****************************************************************************/
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char *
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gets(char *s)
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{
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char * result = s;
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int c;
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ENTER();
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SHOWPOINTER(s);
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assert( s != NULL && stdin != NULL );
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#if defined(CHECK_FOR_NULL_POINTERS)
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{
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if(s == NULL || stdin == NULL)
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{
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SHOWMSG("invalid parameters");
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errno = EFAULT;
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result = NULL;
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goto out;
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}
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}
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#endif /* CHECK_FOR_NULL_POINTERS */
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if(__check_abort_enabled)
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__check_abort();
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/* Take care of the checks and data structure changes that
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* need to be handled only once for this stream.
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*/
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if(__fgetc_check(stdin) != OK)
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{
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result = NULL;
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goto out;
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}
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/* So that we can tell error and 'end of file' conditions apart. */
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clearerr(stdin);
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while(TRUE)
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{
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c = __getc(stdin);
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if(c == EOF)
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{
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if(ferror(stdin))
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{
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/* Just to be on the safe side. */
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(*s) = '\0';
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result = NULL;
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goto out;
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}
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/* Make sure that we return NULL if we really
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didn't read anything at all */
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if(s == result)
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result = NULL;
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break;
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}
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if(c == '\n')
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break;
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(*s++) = c;
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}
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(*s) = '\0';
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SHOWSTRING(result);
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out:
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RETURN(result);
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return(result);
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}
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