78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
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/*
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* Copyright 1987 by the Student Information Processing Board
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* of the Massachusetts Institute of Technology
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* For copyright info, see "Copyright.SIPB".
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*
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* from: error_message.c,v 1.1 86/11/10 21:34:34 spook Exp $
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* $Id: error_message.c,v 1.3 1994/09/09 21:43:22 g89r4222 Exp $
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*/
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#include <stdio.h>
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#include "error_table.h"
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extern int sys_nerr;
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static char buffer[25];
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char *
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error_message(code)
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int code;
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{
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register int offset;
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register error_table **et;
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register int table_num;
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register int div;
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register char *cp;
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offset = code & ((1<<ERRCODE_RANGE)-1);
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table_num = code - offset;
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if ((_et_list == (error_table **)NULL) && table_num)
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goto oops;
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if (!table_num) {
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if (offset < sys_nerr)
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return(sys_errlist[offset]);
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else
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goto oops;
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}
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for (et = _et_list; *et != (error_table *)NULL; et++) {
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if ((*et)->base == table_num) {
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/* This is the right table */
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if ((*et)->n_msgs <= offset)
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goto oops;
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return((*et)->msgs[offset]);
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}
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}
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oops:
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cp = buffer;
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{
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register char *cp1;
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for (cp1 = "Unknown code "; *cp1; cp1++, cp++)
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*cp = *cp1;
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if (table_num) {
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for (cp1 = error_table_name(table_num); *cp1; cp1++, cp++)
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*cp = *cp1;
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*cp++ = ' ';
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*cp = '\0';
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}
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}
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div = 1000000000;
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if (offset == 0) {
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*cp++ = '0';
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*cp = '\0';
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return(buffer);
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}
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while (div > offset)
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div /= 10;
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do {
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register int n = offset / div;
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*cp++ = '0' + n;
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offset -= n * div;
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div /= 10;
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} while (offset && div);
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while (div) {
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*cp++ = '0';
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div /= 10;
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}
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*cp = '\0';
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return(buffer);
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}
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