1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /*
3 * Copyright 1997 by Massachusetts Institute of Technology
4 *
5 * Copyright 1987 by MIT Student Information Processing Board
6 *
7 * Permission to use, copy, modify, and distribute this software
8 * and its documentation for any purpose and without fee is
9 * hereby granted, provided that the above copyright notice
10 * appear in all copies and that both that copyright notice and
11 * this permission notice appear in supporting documentation,
12 * and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
13 * used in advertising or publicity pertaining to distribution
14 * of the software without specific, written prior permission.
15 * Furthermore if you modify this software you must label
16 * your software as modified software and not distribute it in such a
17 * fashion that it might be confused with the original M.I.T. software.
18 * M.I.T. and the M.I.T. S.I.P.B. make no representations about
19 * the suitability of this software for any purpose. It is
20 * provided "as is" without express or implied warranty.
21 */
22
23 #include "com_err.h"
24 #include "error_table.h"
25
26 static const char char_set[] =
27 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
28
29 const char *
error_table_name_r(unsigned long num,char * outbuf)30 error_table_name_r (unsigned long num,
31 /*@out@*/ /*@returned@*/ char *outbuf)
32 /*@modifies outbuf@*/
33 {
34 long ch;
35 int i;
36 /*@out@*/ char *p;
37
38 p = outbuf;
39 num >>= ERRCODE_RANGE;
40
41 for (i = 3; i >= 0; i--) {
42 ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
43 if (ch != 0)
44 *p++ = char_set[ch-1];
45 }
46 *p = '\0';
47 return(outbuf);
48 }
49
50 /*@observer@*/
error_table_name(unsigned long num)51 const char * error_table_name(unsigned long num)
52 /*@modifies internalState@*/
53 {
54 static char buf[6];
55
56 return error_table_name_r(num, buf);
57 }
58