Commit | Line | Data |
---|---|---|
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" |
3bc4181f | 7 | #include "cache.h" |
0fcfd160 | 8 | |
3b331e92 | 9 | static FILE *error_handle; |
f4c3edc0 | 10 | static int tweaked_error_buffering; |
3b331e92 | 11 | |
ebaa79f4 | 12 | void vreportf(const char *prefix, const char *err, va_list params) |
0fcfd160 | 13 | { |
3b331e92 | 14 | FILE *fh = error_handle ? error_handle : stderr; |
f4c3edc0 JK |
15 | |
16 | fflush(fh); | |
17 | if (!tweaked_error_buffering) { | |
18 | setvbuf(fh, NULL, _IOLBF, 0); | |
19 | tweaked_error_buffering = 1; | |
20 | } | |
21 | ||
22 | fputs(prefix, fh); | |
23 | vfprintf(fh, err, params); | |
24 | fputc('\n', fh); | |
3bc4181f CB |
25 | } |
26 | ||
64b1cb74 | 27 | static NORETURN void usage_builtin(const char *err, va_list params) |
0fcfd160 | 28 | { |
ebaa79f4 | 29 | vreportf("usage: ", err, params); |
5d1a5c02 | 30 | exit(129); |
0fcfd160 LT |
31 | } |
32 | ||
ce88ac5b | 33 | static NORETURN void die_builtin(const char *err, va_list params) |
39a3f5ea | 34 | { |
ebaa79f4 | 35 | vreportf("fatal: ", err, params); |
39a3f5ea PB |
36 | exit(128); |
37 | } | |
38 | ||
ce88ac5b | 39 | static void error_builtin(const char *err, va_list params) |
39a3f5ea | 40 | { |
ebaa79f4 | 41 | vreportf("error: ", err, params); |
39a3f5ea PB |
42 | } |
43 | ||
fa39b6b5 SP |
44 | static void warn_builtin(const char *warn, va_list params) |
45 | { | |
ebaa79f4 | 46 | vreportf("warning: ", warn, params); |
fa39b6b5 | 47 | } |
39a3f5ea | 48 | |
c19a490e JK |
49 | static int die_is_recursing_builtin(void) |
50 | { | |
51 | static int dying; | |
52 | return dying++; | |
53 | } | |
54 | ||
39a3f5ea PB |
55 | /* If we are in a dlopen()ed .so write to a global variable would segfault |
56 | * (ugh), so keep things static. */ | |
64b1cb74 | 57 | static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin; |
18660bc9 | 58 | static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin; |
39a3f5ea | 59 | static void (*error_routine)(const char *err, va_list params) = error_builtin; |
fa39b6b5 | 60 | static void (*warn_routine)(const char *err, va_list params) = warn_builtin; |
c19a490e | 61 | static int (*die_is_recursing)(void) = die_is_recursing_builtin; |
39a3f5ea | 62 | |
18660bc9 | 63 | void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)) |
39a3f5ea PB |
64 | { |
65 | die_routine = routine; | |
66 | } | |
67 | ||
3bc4181f CB |
68 | void set_error_routine(void (*routine)(const char *err, va_list params)) |
69 | { | |
70 | error_routine = routine; | |
71 | } | |
72 | ||
c19a490e JK |
73 | void set_die_is_recursing_routine(int (*routine)(void)) |
74 | { | |
75 | die_is_recursing = routine; | |
76 | } | |
77 | ||
3b331e92 JK |
78 | void set_error_handle(FILE *fh) |
79 | { | |
80 | error_handle = fh; | |
f4c3edc0 | 81 | tweaked_error_buffering = 0; |
3b331e92 JK |
82 | } |
83 | ||
c2e86add | 84 | void NORETURN usagef(const char *err, ...) |
64b1cb74 JN |
85 | { |
86 | va_list params; | |
87 | ||
88 | va_start(params, err); | |
89 | usage_routine(err, params); | |
90 | va_end(params); | |
91 | } | |
92 | ||
c2e86add | 93 | void NORETURN usage(const char *err) |
39a3f5ea | 94 | { |
64b1cb74 | 95 | usagef("%s", err); |
39a3f5ea PB |
96 | } |
97 | ||
c2e86add | 98 | void NORETURN die(const char *err, ...) |
0fcfd160 LT |
99 | { |
100 | va_list params; | |
101 | ||
c19a490e | 102 | if (die_is_recursing()) { |
cd163d4b BC |
103 | fputs("fatal: recursion detected in die handler\n", stderr); |
104 | exit(128); | |
105 | } | |
cd163d4b | 106 | |
0fcfd160 | 107 | va_start(params, err); |
39a3f5ea | 108 | die_routine(err, params); |
0fcfd160 | 109 | va_end(params); |
0fcfd160 LT |
110 | } |
111 | ||
c2e86add | 112 | void NORETURN die_errno(const char *fmt, ...) |
b875036e TR |
113 | { |
114 | va_list params; | |
115 | char fmt_with_err[1024]; | |
f8b5a8e1 JH |
116 | char str_error[256], *err; |
117 | int i, j; | |
118 | ||
c19a490e | 119 | if (die_is_recursing()) { |
cd163d4b BC |
120 | fputs("fatal: recursion detected in die_errno handler\n", |
121 | stderr); | |
122 | exit(128); | |
123 | } | |
cd163d4b | 124 | |
f8b5a8e1 JH |
125 | err = strerror(errno); |
126 | for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) { | |
127 | if ((str_error[j++] = err[i++]) != '%') | |
128 | continue; | |
129 | if (j < sizeof(str_error) - 1) { | |
130 | str_error[j++] = '%'; | |
131 | } else { | |
132 | /* No room to double the '%', so we overwrite it with | |
133 | * '\0' below */ | |
134 | j--; | |
135 | break; | |
136 | } | |
137 | } | |
138 | str_error[j] = 0; | |
139 | snprintf(fmt_with_err, sizeof(fmt_with_err), "%s: %s", fmt, str_error); | |
b875036e TR |
140 | |
141 | va_start(params, fmt); | |
142 | die_routine(fmt_with_err, params); | |
143 | va_end(params); | |
144 | } | |
145 | ||
e208f9cc | 146 | #undef error |
0fcfd160 LT |
147 | int error(const char *err, ...) |
148 | { | |
149 | va_list params; | |
150 | ||
151 | va_start(params, err); | |
39a3f5ea | 152 | error_routine(err, params); |
0fcfd160 LT |
153 | va_end(params); |
154 | return -1; | |
155 | } | |
fa39b6b5 | 156 | |
46efd2d9 | 157 | void warning(const char *warn, ...) |
fa39b6b5 SP |
158 | { |
159 | va_list params; | |
160 | ||
161 | va_start(params, warn); | |
162 | warn_routine(warn, params); | |
163 | va_end(params); | |
164 | } |