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2ced1d3293
isdigit(), isgraph(), islower(), isprint(), ispunct(), isspace(), isupper(), isxdigit(), tolower() and toupper() functions to clamp the input parameter to the "unsigned char" range before it is submitted to the respective locale.library function. This should be in sync with what the specs demand, which state that if the input parameter is neither EOF nor in the range of an "unsigned char" variable, then the results are undefined. - ungetc() now returns the input character, clamped to an unsigned char value, upon success. Previously, if the input parameter was negative and not EOF, the result was identical to the input, which could have had negative side-effects. git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14958 87f5fb63-7c3d-0410-a384-fd976d0f7a62
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/*
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* $Id: stdio_fputc.c,v 1.7 2005-05-29 09:56:09 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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int
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__fputc_check(FILE *stream)
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{
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struct iob * file = (struct iob *)stream;
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int result = EOF;
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assert( stream != NULL );
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#if defined(CHECK_FOR_NULL_POINTERS)
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{
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if(stream == NULL)
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{
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__set_errno(EFAULT);
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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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assert( __is_valid_iob(file) );
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assert( FLAG_IS_SET(file->iob_Flags,IOBF_IN_USE) );
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assert( file->iob_BufferSize > 0 );
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if(FLAG_IS_CLEAR(file->iob_Flags,IOBF_IN_USE))
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{
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SHOWMSG("this file is not even in use");
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SET_FLAG(file->iob_Flags,IOBF_ERROR);
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__set_errno(EBADF);
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goto out;
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}
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if(FLAG_IS_CLEAR(file->iob_Flags,IOBF_WRITE))
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{
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SHOWMSG("this stream is not write enabled");
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SET_FLAG(file->iob_Flags,IOBF_ERROR);
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__set_errno(EBADF);
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goto out;
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}
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if(__iob_read_buffer_is_valid(file) && __drop_iob_read_buffer(file) < 0)
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{
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SHOWMSG("couldn't get rid of the read buffer.");
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goto out;
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}
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result = OK;
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out:
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return(result);
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}
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/****************************************************************************/
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int
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__fputc(int c,FILE *stream,int buffer_mode)
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{
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struct iob * file = (struct iob *)stream;
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int result = EOF;
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assert( stream != NULL );
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assert( FLAG_IS_SET(file->iob_Flags,IOBF_IN_USE) );
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assert( file->iob_BufferSize > 0 );
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if(__iob_write_buffer_is_full(file) && __flush_iob_write_buffer(file) < 0)
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goto out;
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file->iob_Buffer[file->iob_BufferWriteBytes++] = c;
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if((buffer_mode == IOBF_BUFFER_MODE_NONE || (buffer_mode == IOBF_BUFFER_MODE_LINE && c == '\n')) && __flush_iob_write_buffer(file) < 0)
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{
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/* Pretend that the last character was not written. */
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file->iob_BufferWriteBytes--;
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goto out;
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}
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/* Clip everything but the least significant eight bits. This
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also takes care of the sign. Thus, a -1 (== EOF) always comes
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out as 255. */
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result = (c & 255);
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out:
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return(result);
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}
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/****************************************************************************/
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int
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fputc(int c,FILE *stream)
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{
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struct iob * file = (struct iob *)stream;
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int result = EOF;
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assert( stream != NULL );
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if(__check_abort_enabled)
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__check_abort();
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assert( FLAG_IS_SET(file->iob_Flags,IOBF_IN_USE) );
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flockfile(stream);
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if(__fputc_check(stream) < 0)
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goto out;
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result = __fputc(c,stream,(file->iob_Flags & IOBF_BUFFER_MODE));
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out:
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funlockfile(stream);
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return(result);
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}
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