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1 | /* | |
2 | * Copyright 1987, 1988 by MIT Student Information Processing Board. | |
3 | * | |
4 | * For copyright info, see mit-sipb-copyright.h. | |
5 | */ | |
6 | ||
7 | #include "mit-sipb-copyright.h" | |
8 | ||
9 | #include <stdio.h> | |
10 | #include <stdarg.h> | |
11 | #include "error_table.h" | |
12 | #include "com_err.h" | |
13 | ||
14 | static const char rcsid[] = "$Id$"; | |
15 | ||
16 | static void default_com_err_proc(const char *progname, long code, | |
17 | const char *fmt, va_list args); | |
18 | ||
19 | com_err_handler_t com_err_hook = default_com_err_proc; | |
20 | ||
21 | static void default_com_err_proc(const char *progname, long code, | |
22 | const char *fmt, va_list args) | |
23 | { | |
24 | if (progname) { | |
25 | fputs(progname, stderr); | |
26 | fputs(": ", stderr); | |
27 | } | |
28 | ||
29 | if (code) { | |
30 | fputs(error_message(code), stderr); | |
31 | fputs(" ", stderr); | |
32 | } | |
33 | if (fmt) | |
34 | vfprintf(stderr, fmt, args); | |
35 | ||
36 | /* possibly should do the \r only on a tty in raw mode */ | |
37 | putc('\r', stderr); | |
38 | putc('\n', stderr); | |
39 | fflush(stderr); | |
40 | } | |
41 | ||
42 | void com_err_va(const char *progname, long code, const char *fmt, va_list args) | |
43 | { | |
44 | (*com_err_hook)(progname, code, fmt, args); | |
45 | } | |
46 | ||
47 | void com_err(const char *progname, long code, const char *fmt, ...) | |
48 | { | |
49 | va_list pvar; | |
50 | ||
51 | va_start(pvar, fmt); | |
52 | com_err_va(progname, code, fmt, pvar); | |
53 | va_end(pvar); | |
54 | } | |
55 | ||
56 | com_err_handler_t set_com_err_hook(com_err_handler_t new_proc) | |
57 | { | |
58 | com_err_handler_t x = com_err_hook; | |
59 | ||
60 | com_err_hook = (new_proc) ? new_proc : default_com_err_proc; | |
61 | return x; | |
62 | } | |
63 | ||
64 | com_err_handler_t reset_com_err_hook() | |
65 | { | |
66 | return set_com_err_hook(NULL); | |
67 | } |