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