Last change
on this file since 474 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.3 KB
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Rev | Line | |
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[444] | 1 | /* mvme-read.c -- read bytes from a input device. |
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| 2 | * |
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| 3 | * Copyright (c) 1996 Cygnus Support |
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| 4 | * |
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| 5 | * The authors hereby grant permission to use, copy, modify, distribute, |
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| 6 | * and license this software and its documentation for any purpose, provided |
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| 7 | * that existing copyright notices are retained in all copies and that this |
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| 8 | * notice is included verbatim in any distributions. No written agreement, |
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| 9 | * license, or royalty fee is required for any of the authorized uses. |
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| 10 | * Modifications to this software may be copyrighted by their authors |
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| 11 | * and need not follow the licensing terms described here, provided that |
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| 12 | * the new terms are clearly indicated on the first page of each file where |
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| 13 | * they apply. |
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| 14 | */ |
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| 15 | |
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| 16 | extern int inbyte (); |
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| 17 | extern char * __inln (); |
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| 18 | |
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| 19 | /* |
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| 20 | * read -- read bytes from the serial port. Ignore fd, since |
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| 21 | * we only have stdin. |
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| 22 | */ |
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| 23 | int |
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| 24 | read (fd, buf, nbytes) |
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| 25 | int fd; |
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| 26 | char *buf; |
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| 27 | int nbytes; |
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| 28 | { |
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| 29 | if (nbytes >= 256) |
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| 30 | { |
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| 31 | char *read_end = __inln (buf); |
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| 32 | *read_end = '\n'; |
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| 33 | return read_end - buf + 1; |
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| 34 | } |
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| 35 | else |
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| 36 | { |
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| 37 | int i, c; |
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| 38 | for (i = 0; i < nbytes; i++) { |
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| 39 | *buf++ = c = inbyte (); |
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| 40 | if (c == '\n' || c == '\r') { |
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| 41 | buf[-1] = '\n'; /* convert \r to \n */ |
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| 42 | buf[0] = '\0'; |
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| 43 | break; |
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| 44 | } |
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| 45 | } |
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| 46 | |
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| 47 | return i; |
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| 48 | } |
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| 49 | } |
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