libgloss/read.c

   1 /* read.c -- read bytes from a input device.
   2  *
   3  * Copyright (c) 1995 Cygnus Support
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15 #include "glue.h"
  16
  17 extern char inbyte (void);
  18
  19 /*
  20  * read  -- read bytes from the serial port. Ignore fd, since
  21  *          we only have stdin.
  22  */
  23 int
  24 read (int fd,
  25        void *buf_,
  26        size_t nbytes)
  27 {
  28   int i = 0;
  29   char *buf = buf_;
  30
  31   for (i = 0; i < nbytes; i++) {
  32     *(buf + i) = inbyte();
  33     if ((*(buf + i) == '\n') || (*(buf + i) == '\r')) {
  34       i++;
  35       break;
  36     }
  37   }
  38   return (i);
  39 }