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" | |
10 | ||
11 | static void report(const char *prefix, const char *err, va_list params) | |
12 | { | |
13 | char msg[1024]; | |
14 | vsnprintf(msg, sizeof(msg), err, params); | |
716c69fe | 15 | fprintf(stderr, " %s%s\n", prefix, msg); |
07800601 IM |
16 | } |
17 | ||
18 | static NORETURN void usage_builtin(const char *err) | |
19 | { | |
716c69fe | 20 | fprintf(stderr, "\n Usage: %s\n", err); |
07800601 IM |
21 | exit(129); |
22 | } | |
23 | ||
24 | static NORETURN void die_builtin(const char *err, va_list params) | |
25 | { | |
716c69fe | 26 | report(" Fatal: ", err, params); |
07800601 IM |
27 | exit(128); |
28 | } | |
29 | ||
30 | static void error_builtin(const char *err, va_list params) | |
31 | { | |
716c69fe | 32 | report(" Error: ", err, params); |
07800601 IM |
33 | } |
34 | ||
35 | static void warn_builtin(const char *warn, va_list params) | |
36 | { | |
716c69fe | 37 | report(" Warning: ", warn, params); |
07800601 IM |
38 | } |
39 | ||
40 | /* If we are in a dlopen()ed .so write to a global variable would segfault | |
41 | * (ugh), so keep things static. */ | |
42 | static void (*usage_routine)(const char *err) NORETURN = usage_builtin; | |
43 | static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin; | |
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 | ||
47 | void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN) | |
48 | { | |
49 | die_routine = routine; | |
50 | } | |
51 | ||
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); | |
62 | die_routine(err, params); | |
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 | } |