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 * 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@*/ 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