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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" |
3bc4181f | 7 | #include "cache.h" |
0fcfd160 | 8 | |
ebaa79f4 | 9 | void vreportf(const char *prefix, const char *err, va_list params) |
0fcfd160 | 10 | { |
625a860c | 11 | char msg[4096]; |
d048a96e NP |
12 | vsnprintf(msg, sizeof(msg), err, params); |
13 | fprintf(stderr, "%s%s\n", prefix, msg); | |
0fcfd160 LT |
14 | } |
15 | ||
3bc4181f CB |
16 | void vwritef(int fd, const char *prefix, const char *err, va_list params) |
17 | { | |
18 | char msg[4096]; | |
19 | int len = vsnprintf(msg, sizeof(msg), err, params); | |
20 | if (len > sizeof(msg)) | |
21 | len = sizeof(msg); | |
22 | ||
23 | write_in_full(fd, prefix, strlen(prefix)); | |
24 | write_in_full(fd, msg, len); | |
25 | write_in_full(fd, "\n", 1); | |
26 | } | |
27 | ||
64b1cb74 | 28 | static NORETURN void usage_builtin(const char *err, va_list params) |
0fcfd160 | 29 | { |
ebaa79f4 | 30 | vreportf("usage: ", err, params); |
5d1a5c02 | 31 | exit(129); |
0fcfd160 LT |
32 | } |
33 | ||
ce88ac5b | 34 | static NORETURN void die_builtin(const char *err, va_list params) |
39a3f5ea | 35 | { |
ebaa79f4 | 36 | vreportf("fatal: ", err, params); |
39a3f5ea PB |
37 | exit(128); |
38 | } | |
39 | ||
ce88ac5b | 40 | static void error_builtin(const char *err, va_list params) |
39a3f5ea | 41 | { |
ebaa79f4 | 42 | vreportf("error: ", err, params); |
39a3f5ea PB |
43 | } |
44 | ||
fa39b6b5 SP |
45 | static void warn_builtin(const char *warn, va_list params) |
46 | { | |
ebaa79f4 | 47 | vreportf("warning: ", warn, params); |
fa39b6b5 | 48 | } |
39a3f5ea | 49 | |
c19a490e JK |
50 | static int die_is_recursing_builtin(void) |
51 | { | |
52 | static int dying; | |
53 | return dying++; | |
54 | } | |
55 | ||
39a3f5ea PB |
56 | /* If we are in a dlopen()ed .so write to a global variable would segfault |
57 | * (ugh), so keep things static. */ | |
64b1cb74 | 58 | static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin; |
18660bc9 | 59 | static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin; |
39a3f5ea | 60 | static void (*error_routine)(const char *err, va_list params) = error_builtin; |
fa39b6b5 | 61 | static void (*warn_routine)(const char *err, va_list params) = warn_builtin; |
c19a490e | 62 | static int (*die_is_recursing)(void) = die_is_recursing_builtin; |
39a3f5ea | 63 | |
18660bc9 | 64 | void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)) |
39a3f5ea PB |
65 | { |
66 | die_routine = routine; | |
67 | } | |
68 | ||
3bc4181f CB |
69 | void set_error_routine(void (*routine)(const char *err, va_list params)) |
70 | { | |
71 | error_routine = routine; | |
72 | } | |
73 | ||
c19a490e JK |
74 | void set_die_is_recursing_routine(int (*routine)(void)) |
75 | { | |
76 | die_is_recursing = routine; | |
77 | } | |
78 | ||
c2e86add | 79 | void NORETURN usagef(const char *err, ...) |
64b1cb74 JN |
80 | { |
81 | va_list params; | |
82 | ||
83 | va_start(params, err); | |
84 | usage_routine(err, params); | |
85 | va_end(params); | |
86 | } | |
87 | ||
c2e86add | 88 | void NORETURN usage(const char *err) |
39a3f5ea | 89 | { |
64b1cb74 | 90 | usagef("%s", err); |
39a3f5ea PB |
91 | } |
92 | ||
c2e86add | 93 | void NORETURN die(const char *err, ...) |
0fcfd160 LT |
94 | { |
95 | va_list params; | |
96 | ||
c19a490e | 97 | if (die_is_recursing()) { |
cd163d4b BC |
98 | fputs("fatal: recursion detected in die handler\n", stderr); |
99 | exit(128); | |
100 | } | |
cd163d4b | 101 | |
0fcfd160 | 102 | va_start(params, err); |
39a3f5ea | 103 | die_routine(err, params); |
0fcfd160 | 104 | va_end(params); |
0fcfd160 LT |
105 | } |
106 | ||
c2e86add | 107 | void NORETURN die_errno(const char *fmt, ...) |
b875036e TR |
108 | { |
109 | va_list params; | |
110 | char fmt_with_err[1024]; | |
f8b5a8e1 JH |
111 | char str_error[256], *err; |
112 | int i, j; | |
113 | ||
c19a490e | 114 | if (die_is_recursing()) { |
cd163d4b BC |
115 | fputs("fatal: recursion detected in die_errno handler\n", |
116 | stderr); | |
117 | exit(128); | |
118 | } | |
cd163d4b | 119 | |
f8b5a8e1 JH |
120 | err = strerror(errno); |
121 | for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) { | |
122 | if ((str_error[j++] = err[i++]) != '%') | |
123 | continue; | |
124 | if (j < sizeof(str_error) - 1) { | |
125 | str_error[j++] = '%'; | |
126 | } else { | |
127 | /* No room to double the '%', so we overwrite it with | |
128 | * '\0' below */ | |
129 | j--; | |
130 | break; | |
131 | } | |
132 | } | |
133 | str_error[j] = 0; | |
134 | snprintf(fmt_with_err, sizeof(fmt_with_err), "%s: %s", fmt, str_error); | |
b875036e TR |
135 | |
136 | va_start(params, fmt); | |
137 | die_routine(fmt_with_err, params); | |
138 | va_end(params); | |
139 | } | |
140 | ||
e208f9cc | 141 | #undef error |
0fcfd160 LT |
142 | int error(const char *err, ...) |
143 | { | |
144 | va_list params; | |
145 | ||
146 | va_start(params, err); | |
39a3f5ea | 147 | error_routine(err, params); |
0fcfd160 LT |
148 | va_end(params); |
149 | return -1; | |
150 | } | |
fa39b6b5 | 151 | |
46efd2d9 | 152 | void warning(const char *warn, ...) |
fa39b6b5 SP |
153 | { |
154 | va_list params; | |
155 | ||
156 | va_start(params, warn); | |
157 | warn_routine(warn, params); | |
158 | va_end(params); | |
159 | } |