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/*
* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
RCSID("$Id: com_err.c,v 1.19 2005/04/24 19:42:39 lha Exp $");
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <roken.h>
#include "com_err.h"
struct et_list *_et_list = NULL;
const char *
error_message (long code)
{
static char msg[128];
const char *p = com_right(_et_list, code);
if (p == NULL) {
if (code < 0)
snprintf(msg, sizeof(msg), "Unknown error %ld", code);
else
p = strerror(code);
}
if (p != NULL && *p != '\0') {
strlcpy(msg, p, sizeof(msg));
} else
snprintf(msg, sizeof(msg), "Unknown error %ld", code);
return msg;
}
int
init_error_table(const char **msgs, long base, int count)
{
initialize_error_table_r(&_et_list, msgs, count, base);
return 0;
}
static void
default_proc (const char *whoami, long code, const char *fmt, va_list args)
__attribute__((__format__(__printf__, 3, 0)));
static void
default_proc (const char *whoami, long code, const char *fmt, va_list args)
{
if (whoami)
fprintf(stderr, "%s: ", whoami);
if (code)
fprintf(stderr, "%s ", error_message(code));
if (fmt)
vfprintf(stderr, fmt, args);
fprintf(stderr, "\r\n"); /* ??? */
}
static errf com_err_hook = default_proc;
void
com_err_va (const char *whoami,
long code,
const char *fmt,
va_list args)
{
(*com_err_hook) (whoami, code, fmt, args);
}
void
com_err (const char *whoami,
long code,
const char *fmt,
...)
{
va_list ap;
va_start(ap, fmt);
com_err_va (whoami, code, fmt, ap);
va_end(ap);
}
errf
set_com_err_hook (errf new)
{
errf old = com_err_hook;
if (new)
com_err_hook = new;
else
com_err_hook = default_proc;
return old;
}
errf
reset_com_err_hook (void)
{
return set_com_err_hook(NULL);
}
#define ERRCODE_RANGE 8 /* # of bits to shift table number */
#define BITS_PER_CHAR 6 /* # bits to shift per character in name */
static const char char_set[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
static char buf[6];
const char *
error_table_name(int num)
{
int ch;
int i;
char *p;
/* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
p = buf;
num >>= ERRCODE_RANGE;
/* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
num &= 077777777;
/* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
for (i = 4; i >= 0; i--) {
ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
if (ch != 0)
*p++ = char_set[ch-1];
}
*p = '\0';
return(buf);
}
void
add_to_error_table(struct et_list *new_table)
{
struct et_list *et;
for (et = _et_list; et; et = et->next) {
if (et->table->base == new_table->table->base)
return;
}
new_table->next = _et_list;
_et_list = new_table;
}
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