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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 | { |
b5a9e435 | 11 | char msg[4096]; |
f2900898 | 12 | char *p; |
f4c3edc0 | 13 | |
b5a9e435 | 14 | vsnprintf(msg, sizeof(msg), err, params); |
f2900898 JK |
15 | for (p = msg; *p; p++) { |
16 | if (iscntrl(*p) && *p != '\t' && *p != '\n') | |
17 | *p = '?'; | |
f4c3edc0 | 18 | } |
e3f43ce7 | 19 | fprintf(stderr, "%s%s\n", prefix, msg); |
3bc4181f CB |
20 | } |
21 | ||
64b1cb74 | 22 | static NORETURN void usage_builtin(const char *err, va_list params) |
0fcfd160 | 23 | { |
ebaa79f4 | 24 | vreportf("usage: ", err, params); |
5d1a5c02 | 25 | exit(129); |
0fcfd160 LT |
26 | } |
27 | ||
ce88ac5b | 28 | static NORETURN void die_builtin(const char *err, va_list params) |
39a3f5ea | 29 | { |
ebaa79f4 | 30 | vreportf("fatal: ", err, params); |
39a3f5ea PB |
31 | exit(128); |
32 | } | |
33 | ||
ce88ac5b | 34 | static void error_builtin(const char *err, va_list params) |
39a3f5ea | 35 | { |
ebaa79f4 | 36 | vreportf("error: ", err, params); |
39a3f5ea PB |
37 | } |
38 | ||
fa39b6b5 SP |
39 | static void warn_builtin(const char *warn, va_list params) |
40 | { | |
ebaa79f4 | 41 | vreportf("warning: ", warn, params); |
fa39b6b5 | 42 | } |
39a3f5ea | 43 | |
c19a490e JK |
44 | static int die_is_recursing_builtin(void) |
45 | { | |
46 | static int dying; | |
47 | return dying++; | |
48 | } | |
49 | ||
39a3f5ea PB |
50 | /* If we are in a dlopen()ed .so write to a global variable would segfault |
51 | * (ugh), so keep things static. */ | |
64b1cb74 | 52 | static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin; |
18660bc9 | 53 | static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin; |
39a3f5ea | 54 | static void (*error_routine)(const char *err, va_list params) = error_builtin; |
fa39b6b5 | 55 | static void (*warn_routine)(const char *err, va_list params) = warn_builtin; |
c19a490e | 56 | static int (*die_is_recursing)(void) = die_is_recursing_builtin; |
39a3f5ea | 57 | |
18660bc9 | 58 | void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)) |
39a3f5ea PB |
59 | { |
60 | die_routine = routine; | |
61 | } | |
62 | ||
3bc4181f CB |
63 | void set_error_routine(void (*routine)(const char *err, va_list params)) |
64 | { | |
65 | error_routine = routine; | |
66 | } | |
67 | ||
725149be CC |
68 | void (*get_error_routine(void))(const char *err, va_list params) |
69 | { | |
70 | return error_routine; | |
71 | } | |
72 | ||
b83f108b CC |
73 | void set_warn_routine(void (*routine)(const char *warn, va_list params)) |
74 | { | |
75 | warn_routine = routine; | |
76 | } | |
77 | ||
725149be CC |
78 | void (*get_warn_routine(void))(const char *warn, va_list params) |
79 | { | |
80 | return warn_routine; | |
81 | } | |
82 | ||
c19a490e JK |
83 | void set_die_is_recursing_routine(int (*routine)(void)) |
84 | { | |
85 | die_is_recursing = routine; | |
86 | } | |
87 | ||
c2e86add | 88 | void NORETURN usagef(const char *err, ...) |
64b1cb74 JN |
89 | { |
90 | va_list params; | |
91 | ||
92 | va_start(params, err); | |
93 | usage_routine(err, params); | |
94 | va_end(params); | |
95 | } | |
96 | ||
c2e86add | 97 | void NORETURN usage(const char *err) |
39a3f5ea | 98 | { |
64b1cb74 | 99 | usagef("%s", err); |
39a3f5ea PB |
100 | } |
101 | ||
c2e86add | 102 | void NORETURN die(const char *err, ...) |
0fcfd160 LT |
103 | { |
104 | va_list params; | |
105 | ||
c19a490e | 106 | if (die_is_recursing()) { |
cd163d4b BC |
107 | fputs("fatal: recursion detected in die handler\n", stderr); |
108 | exit(128); | |
109 | } | |
cd163d4b | 110 | |
0fcfd160 | 111 | va_start(params, err); |
39a3f5ea | 112 | die_routine(err, params); |
0fcfd160 | 113 | va_end(params); |
0fcfd160 LT |
114 | } |
115 | ||
58e4e511 | 116 | static const char *fmt_with_err(char *buf, int n, const char *fmt) |
b875036e | 117 | { |
f8b5a8e1 JH |
118 | char str_error[256], *err; |
119 | int i, j; | |
120 | ||
121 | err = strerror(errno); | |
122 | for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) { | |
123 | if ((str_error[j++] = err[i++]) != '%') | |
124 | continue; | |
125 | if (j < sizeof(str_error) - 1) { | |
126 | str_error[j++] = '%'; | |
127 | } else { | |
128 | /* No room to double the '%', so we overwrite it with | |
129 | * '\0' below */ | |
130 | j--; | |
131 | break; | |
132 | } | |
133 | } | |
134 | str_error[j] = 0; | |
58e4e511 NTND |
135 | snprintf(buf, n, "%s: %s", fmt, str_error); |
136 | return buf; | |
137 | } | |
138 | ||
139 | void NORETURN die_errno(const char *fmt, ...) | |
140 | { | |
141 | char buf[1024]; | |
142 | va_list params; | |
143 | ||
144 | if (die_is_recursing()) { | |
145 | fputs("fatal: recursion detected in die_errno handler\n", | |
146 | stderr); | |
147 | exit(128); | |
148 | } | |
b875036e TR |
149 | |
150 | va_start(params, fmt); | |
58e4e511 | 151 | die_routine(fmt_with_err(buf, sizeof(buf), fmt), params); |
b875036e TR |
152 | va_end(params); |
153 | } | |
154 | ||
4df5e918 | 155 | #undef error_errno |
fd1d6723 NTND |
156 | int error_errno(const char *fmt, ...) |
157 | { | |
158 | char buf[1024]; | |
159 | va_list params; | |
160 | ||
161 | va_start(params, fmt); | |
162 | error_routine(fmt_with_err(buf, sizeof(buf), fmt), params); | |
163 | va_end(params); | |
164 | return -1; | |
165 | } | |
166 | ||
e208f9cc | 167 | #undef error |
0fcfd160 LT |
168 | int error(const char *err, ...) |
169 | { | |
170 | va_list params; | |
171 | ||
172 | va_start(params, err); | |
39a3f5ea | 173 | error_routine(err, params); |
0fcfd160 LT |
174 | va_end(params); |
175 | return -1; | |
176 | } | |
fa39b6b5 | 177 | |
fd1d6723 NTND |
178 | void warning_errno(const char *warn, ...) |
179 | { | |
180 | char buf[1024]; | |
181 | va_list params; | |
182 | ||
183 | va_start(params, warn); | |
184 | warn_routine(fmt_with_err(buf, sizeof(buf), warn), params); | |
185 | va_end(params); | |
186 | } | |
187 | ||
46efd2d9 | 188 | void warning(const char *warn, ...) |
fa39b6b5 SP |
189 | { |
190 | va_list params; | |
191 | ||
192 | va_start(params, warn); | |
193 | warn_routine(warn, params); | |
194 | va_end(params); | |
195 | } | |
d8193743 JK |
196 | |
197 | static NORETURN void BUG_vfl(const char *file, int line, const char *fmt, va_list params) | |
198 | { | |
199 | char prefix[256]; | |
200 | ||
201 | /* truncation via snprintf is OK here */ | |
202 | if (file) | |
203 | snprintf(prefix, sizeof(prefix), "BUG: %s:%d: ", file, line); | |
204 | else | |
205 | snprintf(prefix, sizeof(prefix), "BUG: "); | |
206 | ||
207 | vreportf(prefix, fmt, params); | |
208 | abort(); | |
209 | } | |
210 | ||
211 | #ifdef HAVE_VARIADIC_MACROS | |
3d7dd2d3 | 212 | NORETURN void BUG_fl(const char *file, int line, const char *fmt, ...) |
d8193743 JK |
213 | { |
214 | va_list ap; | |
215 | va_start(ap, fmt); | |
216 | BUG_vfl(file, line, fmt, ap); | |
217 | va_end(ap); | |
218 | } | |
219 | #else | |
3d7dd2d3 | 220 | NORETURN void BUG(const char *fmt, ...) |
d8193743 JK |
221 | { |
222 | va_list ap; | |
223 | va_start(ap, fmt); | |
224 | BUG_vfl(NULL, 0, fmt, ap); | |
225 | va_end(ap); | |
226 | } | |
227 | #endif |