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/* @(#)comerr.c 1.23 00/08/02 Copyright 1985 J. Schilling */
/*
* Routines for printing command errors
*
* Copyright (c) 1985 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <mconfig.h>
#include <stdio.h>
#include <standard.h>
#include <stdxlib.h>
#include <vadefs.h>
#include <strdefs.h>
#include <schily.h>
#ifndef HAVE_STRERROR
extern char *sys_errlist[];
extern int sys_nerr;
#endif
EXPORT int on_comerr __PR((void (*fun)(int, void *), void *arg));
EXPORT void comerr __PR((const char *, ...));
EXPORT void comerrno __PR((int, const char *, ...));
EXPORT int errmsg __PR((const char *, ...));
EXPORT int errmsgno __PR((int, const char *, ...));
LOCAL int _comerr __PR((int, int, const char *, va_list));
EXPORT void comexit __PR((int));
EXPORT char *errmsgstr __PR((int));
typedef struct ex {
struct ex *next;
void (*func) __PR((int, void *));
void *arg;
} ex_t;
LOCAL ex_t *exfuncs;
EXPORT int
on_comerr(func, arg)
void (*func) __PR((int, void *));
void *arg;
{
ex_t *fp;
fp = malloc(sizeof(*fp));
if (fp == NULL)
return (-1);
fp->func = func;
fp->arg = arg;
fp->next = exfuncs;
exfuncs = fp;
return (0);
}
/* VARARGS1 */
#ifdef PROTOTYPES
void comerr(const char *msg, ...)
#else
void comerr(msg, va_alist)
char *msg;
va_dcl
#endif
{
va_list args;
#ifdef PROTOTYPES
va_start(args, msg);
#else
va_start(args);
#endif
(void)_comerr(TRUE, geterrno(), msg, args);
/* NOTREACHED */
va_end(args);
}
/* VARARGS2 */
#ifdef PROTOTYPES
void comerrno(int err, const char *msg, ...)
#else
void comerrno(err, msg, va_alist)
int err;
char *msg;
va_dcl
#endif
{
va_list args;
#ifdef PROTOTYPES
va_start(args, msg);
#else
va_start(args);
#endif
(void)_comerr(TRUE, err, msg, args);
/* NOTREACHED */
va_end(args);
}
/* VARARGS1 */
#ifdef PROTOTYPES
int errmsg(const char *msg, ...)
#else
int errmsg(msg, va_alist)
char *msg;
va_dcl
#endif
{
va_list args;
int ret;
#ifdef PROTOTYPES
va_start(args, msg);
#else
va_start(args);
#endif
ret = _comerr(FALSE, geterrno(), msg, args);
va_end(args);
return (ret);
}
/* VARARGS2 */
#ifdef PROTOTYPES
int errmsgno(int err, const char *msg, ...)
#else
int errmsgno(err, msg, va_alist)
int err;
char *msg;
va_dcl
#endif
{
va_list args;
int ret;
#ifdef PROTOTYPES
va_start(args, msg);
#else
va_start(args);
#endif
ret = _comerr(FALSE, err, msg, args);
va_end(args);
return (ret);
}
LOCAL int _comerr(exflg, err, msg, args)
int exflg;
int err;
const char *msg;
va_list args;
{
char errbuf[20];
char *errnam;
char *prognam = get_progname();
if (err < 0) {
error("%s: %r", prognam, msg, args);
} else {
errnam = errmsgstr(err);
if (errnam == NULL) {
(void)js_snprintf(errbuf, sizeof (errbuf),
"Error %d", err);
errnam = errbuf;
}
error("%s: %s. %r", prognam, errnam, msg, args);
}
if (exflg) {
comexit(err);
/* NOTREACHED */
}
return(err);
}
EXPORT void
comexit(err)
int err;
{
while (exfuncs) {
(*exfuncs->func)(err, exfuncs->arg);
exfuncs = exfuncs->next;
}
exit(err);
/* NOTREACHED */
}
EXPORT char *
errmsgstr(err)
int err;
{
#ifdef HAVE_STRERROR
return (strerror(err));
#else
if (err < 0 || err >= sys_nerr) {
return (NULL);
} else {
return (sys_errlist[err]);
}
#endif
}
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