156 lines
4.2 KiB
C
156 lines
4.2 KiB
C
/*
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* Copyright (c) 1997, 1998 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Kungliga Tekniska
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* Högskolan and its contributors.
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*
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* 4. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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RCSID("$Id: com_err.c,v 1.13 1999/03/12 15:17:08 bg Exp $");
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "com_err.h"
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struct et_list *_et_list;
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const char *
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error_message (long code)
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{
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static char msg[128];
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const char *p = com_right(_et_list, code);
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if (p == NULL)
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p = strerror(code);
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if (p != NULL && *p != '\0') {
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strncpy(msg, p, sizeof(msg) - 1);
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msg[sizeof(msg) - 1] = 0;
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} else
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sprintf(msg, "Unknown error %ld", code);
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return msg;
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}
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int
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init_error_table(const char **msgs, long base, int count)
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{
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initialize_error_table_r(&_et_list, msgs, count, base);
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return 0;
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}
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static void
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default_proc (const char *whoami, long code, const char *fmt, va_list args)
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{
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if (whoami)
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fprintf(stderr, "%s: ", whoami);
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if (code)
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fprintf(stderr, "%s ", error_message(code));
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if (fmt)
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\r\n"); /* ??? */
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}
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static errf com_err_hook = default_proc;
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void
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com_err_va (const char *whoami,
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long code,
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const char *fmt,
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va_list args)
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{
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(*com_err_hook) (whoami, code, fmt, args);
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}
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void
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com_err (const char *whoami,
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long code,
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const char *fmt,
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...)
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{
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va_list ap;
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va_start(ap, fmt);
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com_err_va (whoami, code, fmt, ap);
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va_end(ap);
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}
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errf
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set_com_err_hook (errf new)
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{
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errf old = com_err_hook;
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if (new)
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com_err_hook = new;
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else
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com_err_hook = default_proc;
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return old;
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}
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errf
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reset_com_err_hook (void)
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{
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return set_com_err_hook(NULL);
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}
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#define ERRCODE_RANGE 8 /* # of bits to shift table number */
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#define BITS_PER_CHAR 6 /* # bits to shift per character in name */
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static const char char_set[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
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static char buf[6];
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const char *
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error_table_name(int num)
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{
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int ch;
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int i;
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char *p;
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/* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
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p = buf;
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num >>= ERRCODE_RANGE;
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/* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
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num &= 077777777;
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/* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
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for (i = 4; i >= 0; i--) {
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ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
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if (ch != 0)
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*p++ = char_set[ch-1];
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}
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*p = '\0';
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return(buf);
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}
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