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63 lines
1.2 KiB
63 lines
1.2 KiB
/* This is file SETBUFFE.C */
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/* This file may have been modified by DJ Delorie (Jan 1991). If so,
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** these modifications are Coyright (C) 1991 DJ Delorie, 24 Kirsten Ave,
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** Rochester NH, 03867-2954, USA.
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*/
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/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved. The Berkeley software License Agreement
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* specifies the terms and conditions for redistribution.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)setbuffer.c 5.2 (Berkeley) 3/9/86";
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#endif LIBC_SCCS and not lint
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#include <stdio.h>
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#ifdef linux
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#include <stdlib.h>
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#endif
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void
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setbuffer(iop, buf, size)
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register FILE *iop;
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char *buf;
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int size;
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{
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if (iop->_base != NULL && iop->_flag&_IOMYBUF)
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free(iop->_base);
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iop->_flag &= ~(_IOMYBUF|_IONBF|_IOLBF);
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if ((iop->_base = buf) == NULL) {
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iop->_flag |= _IONBF;
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#ifdef linux
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iop->_bufsiz = 0;
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#else
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iop->_bufsiz = NULL;
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#endif
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} else {
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iop->_ptr = iop->_base;
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iop->_bufsiz = size;
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}
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iop->_cnt = 0;
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}
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/*
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* set line buffering for either stdout or stderr
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*/
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void
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setlinebuf(iop)
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register FILE *iop;
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{
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char *buf;
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fflush(iop);
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setbuffer(iop, NULL, 0);
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buf = (char *) malloc(BUFSIZ);
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if (buf != NULL) {
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setbuffer(iop, buf, BUFSIZ);
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iop->_flag |= _IOLBF|_IOMYBUF;
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}
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}
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