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Commit | Line | Data |
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0fcfd160 LT |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | */ | |
4050c0df | 6 | #include "git-compat-util.h" |
0fcfd160 LT |
7 | |
8 | static void report(const char *prefix, const char *err, va_list params) | |
9 | { | |
10 | fputs(prefix, stderr); | |
11 | vfprintf(stderr, err, params); | |
12 | fputs("\n", stderr); | |
13 | } | |
14 | ||
ce88ac5b | 15 | static NORETURN void usage_builtin(const char *err) |
0fcfd160 LT |
16 | { |
17 | fprintf(stderr, "usage: %s\n", err); | |
5d1a5c02 | 18 | exit(129); |
0fcfd160 LT |
19 | } |
20 | ||
ce88ac5b | 21 | static NORETURN void die_builtin(const char *err, va_list params) |
39a3f5ea PB |
22 | { |
23 | report("fatal: ", err, params); | |
24 | exit(128); | |
25 | } | |
26 | ||
ce88ac5b | 27 | static void error_builtin(const char *err, va_list params) |
39a3f5ea PB |
28 | { |
29 | report("error: ", err, params); | |
30 | } | |
31 | ||
32 | ||
33 | /* If we are in a dlopen()ed .so write to a global variable would segfault | |
34 | * (ugh), so keep things static. */ | |
35 | static void (*usage_routine)(const char *err) NORETURN = usage_builtin; | |
36 | static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin; | |
37 | static void (*error_routine)(const char *err, va_list params) = error_builtin; | |
38 | ||
39 | void set_usage_routine(void (*routine)(const char *err) NORETURN) | |
40 | { | |
41 | usage_routine = routine; | |
42 | } | |
43 | ||
44 | void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN) | |
45 | { | |
46 | die_routine = routine; | |
47 | } | |
48 | ||
49 | void set_error_routine(void (*routine)(const char *err, va_list params)) | |
50 | { | |
51 | error_routine = routine; | |
52 | } | |
53 | ||
54 | ||
55 | void usage(const char *err) | |
56 | { | |
57 | usage_routine(err); | |
58 | } | |
59 | ||
0fcfd160 LT |
60 | void die(const char *err, ...) |
61 | { | |
62 | va_list params; | |
63 | ||
64 | va_start(params, err); | |
39a3f5ea | 65 | die_routine(err, params); |
0fcfd160 | 66 | va_end(params); |
0fcfd160 LT |
67 | } |
68 | ||
69 | int error(const char *err, ...) | |
70 | { | |
71 | va_list params; | |
72 | ||
73 | va_start(params, err); | |
39a3f5ea | 74 | error_routine(err, params); |
0fcfd160 LT |
75 | va_end(params); |
76 | return -1; | |
77 | } |