/* from Dale Schumacher's dLibs library */

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>

void setbuf(fp, buf)
	register FILE *fp;
	char *buf;
	{
	assert((fp != NULL));
	    
	if(fp->_flag & _IOMYBUF)
	    free(fp->_base);
	fp->_flag &= ~(_IOFBF | _IOLBF | _IONBF | _IOMYBUF);
	fp->_cnt = 0;
	if(fp->_base = (unsigned char *)buf)	/* assignment intentional */
		{
		fp->_flag |= _IOFBF;
		    /* this is intentionally not __DEFAULT_BUFSIZ__ ++jrb */
		fp->_bsiz = BUFSIZ;
		}
	else
		{
		fp->_flag |= _IONBF;
		fp->_base = &(fp->_ch);			/* use tiny buffer */
		fp->_bsiz = 1;
		}
	fp->_ptr = fp->_base;
	}

/*
 * bezerkly'ism
 * change the buffering on stream from block/unbuffered to line buffered.
 * should stream be flushed before change?? i think so.
 *	++jrb
 */

void setlinebuf(fp)
register FILE *fp;
{
    assert((fp != NULL));

#ifndef NDEBUG
    assert((fflush(fp) != EOF));
#else    
    (void)fflush(fp);
#endif
    fp->_flag &= ~(_IOFBF | _IONBF);
    fp->_flag |=  _IOLBF;
}