Start preparing for 1.5.3.6
[git/git.git] / usage.c
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1/*
2 * GIT - The information manager from hell
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 */
4050c0df 6#include "git-compat-util.h"
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7
8static 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 15static NORETURN void usage_builtin(const char *err)
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16{
17 fprintf(stderr, "usage: %s\n", err);
5d1a5c02 18 exit(129);
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19}
20
ce88ac5b 21static NORETURN void die_builtin(const char *err, va_list params)
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22{
23 report("fatal: ", err, params);
24 exit(128);
25}
26
ce88ac5b 27static void error_builtin(const char *err, va_list params)
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28{
29 report("error: ", err, params);
30}
31
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32static void warn_builtin(const char *warn, va_list params)
33{
34 report("warning: ", warn, params);
35}
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36
37/* If we are in a dlopen()ed .so write to a global variable would segfault
38 * (ugh), so keep things static. */
39static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
40static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin;
41static void (*error_routine)(const char *err, va_list params) = error_builtin;
fa39b6b5 42static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
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43
44void set_usage_routine(void (*routine)(const char *err) NORETURN)
45{
46 usage_routine = routine;
47}
48
49void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN)
50{
51 die_routine = routine;
52}
53
54void set_error_routine(void (*routine)(const char *err, va_list params))
55{
56 error_routine = routine;
57}
58
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59void set_warn_routine(void (*routine)(const char *warn, va_list params))
60{
61 warn_routine = routine;
62}
63
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64
65void usage(const char *err)
66{
67 usage_routine(err);
68}
69
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70void die(const char *err, ...)
71{
72 va_list params;
73
74 va_start(params, err);
39a3f5ea 75 die_routine(err, params);
0fcfd160 76 va_end(params);
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77}
78
79int error(const char *err, ...)
80{
81 va_list params;
82
83 va_start(params, err);
39a3f5ea 84 error_routine(err, params);
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85 va_end(params);
86 return -1;
87}
fa39b6b5 88
46efd2d9 89void warning(const char *warn, ...)
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90{
91 va_list params;
92
93 va_start(params, warn);
94 warn_routine(warn, params);
95 va_end(params);
96}