Commit | Line | Data |
---|---|---|
07800601 | 1 | /* |
5f9273d6 NK |
2 | * usage.c |
3 | * | |
4 | * Various reporting routines. | |
5 | * Originally copied from GIT source. | |
07800601 IM |
6 | * |
7 | * Copyright (C) Linus Torvalds, 2005 | |
8 | */ | |
9 | #include "util.h" | |
0d37aa34 | 10 | #include "debug.h" |
07800601 IM |
11 | |
12 | static void report(const char *prefix, const char *err, va_list params) | |
13 | { | |
14 | char msg[1024]; | |
15 | vsnprintf(msg, sizeof(msg), err, params); | |
716c69fe | 16 | fprintf(stderr, " %s%s\n", prefix, msg); |
07800601 IM |
17 | } |
18 | ||
19 | static NORETURN void usage_builtin(const char *err) | |
20 | { | |
716c69fe | 21 | fprintf(stderr, "\n Usage: %s\n", err); |
07800601 IM |
22 | exit(129); |
23 | } | |
24 | ||
25 | static NORETURN void die_builtin(const char *err, va_list params) | |
26 | { | |
716c69fe | 27 | report(" Fatal: ", err, params); |
07800601 IM |
28 | exit(128); |
29 | } | |
30 | ||
31 | static void error_builtin(const char *err, va_list params) | |
32 | { | |
716c69fe | 33 | report(" Error: ", err, params); |
07800601 IM |
34 | } |
35 | ||
36 | static void warn_builtin(const char *warn, va_list params) | |
37 | { | |
716c69fe | 38 | report(" Warning: ", warn, params); |
07800601 IM |
39 | } |
40 | ||
41 | /* If we are in a dlopen()ed .so write to a global variable would segfault | |
42 | * (ugh), so keep things static. */ | |
43 | static void (*usage_routine)(const char *err) NORETURN = usage_builtin; | |
07800601 IM |
44 | static void (*error_routine)(const char *err, va_list params) = error_builtin; |
45 | static void (*warn_routine)(const char *err, va_list params) = warn_builtin; | |
46 | ||
2690c730 NK |
47 | void set_warning_routine(void (*routine)(const char *err, va_list params)) |
48 | { | |
49 | warn_routine = routine; | |
50 | } | |
51 | ||
07800601 IM |
52 | void usage(const char *err) |
53 | { | |
54 | usage_routine(err); | |
55 | } | |
56 | ||
57 | void die(const char *err, ...) | |
58 | { | |
59 | va_list params; | |
60 | ||
61 | va_start(params, err); | |
e4763438 | 62 | die_builtin(err, params); |
07800601 IM |
63 | va_end(params); |
64 | } | |
65 | ||
66 | int error(const char *err, ...) | |
67 | { | |
68 | va_list params; | |
69 | ||
70 | va_start(params, err); | |
71 | error_routine(err, params); | |
72 | va_end(params); | |
73 | return -1; | |
74 | } | |
75 | ||
76 | void warning(const char *warn, ...) | |
77 | { | |
78 | va_list params; | |
79 | ||
80 | va_start(params, warn); | |
81 | warn_routine(warn, params); | |
82 | va_end(params); | |
83 | } |