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