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/*
* Copyright 1987, 1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, please see the file
* <Copyright.MIT>.
*
* form: getst.c,v 4.5 88/11/15 16:31:39 jtkohl Exp $
* $Id: getst.c,v 1.3 1995/07/18 16:38:47 mark Exp $
*/
#if 0
#ifndef lint
static char rcsid[] =
"$Id: getst.c,v 1.3 1995/07/18 16:38:47 mark Exp $";
#endif /* lint */
#endif
#include <unistd.h>
/*
* getst() takes a file descriptor, a string and a count. It reads
* from the file until either it has read "count" characters, or until
* it reads a null byte. When finished, what has been read exists in
* the given string "s". If "count" characters were actually read, the
* last is changed to a null, so the returned string is always null-
* terminated. getst() returns the number of characters read, including
* the null terminator.
*/
int
getst(fd, s, n)
int fd;
register char *s;
int n;
{
register count = n;
while (read(fd, s, 1) > 0 && --count)
if (*s++ == '\0')
return (n - count);
*s = '\0';
return (n - count);
}
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