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/* mvme-read.c -- read bytes from a input device.
*
* Copyright (c) 1996 Cygnus Support
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
extern int inbyte ();
extern char * __inln ();
/*
* read -- read bytes from the serial port. Ignore fd, since
* we only have stdin.
*/
int
read (fd, buf, nbytes)
int fd;
char *buf;
int nbytes;
{
if (nbytes >= 256)
{
char *read_end = __inln (buf);
*read_end = '\n';
return read_end - buf + 1;
}
else
{
int i, c;
for (i = 0; i < nbytes; i++) {
*buf++ = c = inbyte ();
if (c == '\n' || c == '\r') {
buf[-1] = '\n'; /* convert \r to \n */
buf[0] = '\0';
break;
}
}
return i;
}
}
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