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/*
* Copyright 1987, 1988 by MIT Student Information Processing Board.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose is hereby granted, provided that
* the names of M.I.T. and the M.I.T. S.I.P.B. not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. M.I.T. and the
* M.I.T. S.I.P.B. make no representations about the suitability of
* this software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#include "config.h"
#include <stdio.h>
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "com_err.h"
#include "error_table.h"
#include "internal.h"
static void
default_com_err_proc (const char *whoami, errcode_t code, const
char *fmt, va_list args)
COM_ERR_ATTR((format(printf, 3, 0)));
static void
default_com_err_proc (const char *whoami, errcode_t code, const
char *fmt, va_list args)
{
int do_cr = 1, fd = fileno(stderr);
if (whoami) {
fputs(whoami, stderr);
fputs(": ", stderr);
}
if (code) {
fputs(error_message(code), stderr);
fputs(" ", stderr);
}
if (fmt) {
vfprintf (stderr, fmt, args);
}
if (!isatty(fd))
do_cr = 0;
#ifdef HAVE_TERMIOS_H
else {
struct termios t;
if ((tcgetattr(fd, &t)) == 0 &&
(t.c_oflag & OPOST) && (t.c_oflag & ONLCR))
do_cr = 0;
}
#endif
if (do_cr)
fputc('\r', stderr);
fputc('\n', stderr);
fflush(stderr);
}
typedef void (*errf) (const char *, errcode_t, const char *, va_list)
COM_ERR_ATTR((format(printf, 3, 0)));
errf com_err_hook = default_com_err_proc;
void com_err_va (const char *whoami, errcode_t code, const char *fmt,
va_list args)
{
(*com_err_hook) (whoami, code, fmt, args);
}
void com_err (const char *whoami,
errcode_t code,
const char *fmt, ...)
{
va_list pvar;
if (!com_err_hook)
com_err_hook = default_com_err_proc;
va_start(pvar, fmt);
com_err_va (whoami, code, fmt, pvar);
va_end(pvar);
}
errf set_com_err_hook(errf new_proc)
{
errf x = com_err_hook;
if (new_proc)
com_err_hook = new_proc;
else
com_err_hook = default_com_err_proc;
return x;
}
errf reset_com_err_hook(void) {
errf x = com_err_hook;
com_err_hook = default_com_err_proc;
return x;
}
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