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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 | |
3b331e92 JK |
9 | static FILE *error_handle; |
10 | ||
ebaa79f4 | 11 | void vreportf(const char *prefix, const char *err, va_list params) |
0fcfd160 | 12 | { |
b5a9e435 | 13 | char msg[4096]; |
3b331e92 | 14 | FILE *fh = error_handle ? error_handle : stderr; |
f2900898 | 15 | char *p; |
f4c3edc0 | 16 | |
b5a9e435 | 17 | vsnprintf(msg, sizeof(msg), err, params); |
f2900898 JK |
18 | for (p = msg; *p; p++) { |
19 | if (iscntrl(*p) && *p != '\t' && *p != '\n') | |
20 | *p = '?'; | |
f4c3edc0 | 21 | } |
b5a9e435 | 22 | fprintf(fh, "%s%s\n", prefix, msg); |
3bc4181f CB |
23 | } |
24 | ||
64b1cb74 | 25 | static NORETURN void usage_builtin(const char *err, va_list params) |
0fcfd160 | 26 | { |
ebaa79f4 | 27 | vreportf("usage: ", err, params); |
5d1a5c02 | 28 | exit(129); |
0fcfd160 LT |
29 | } |
30 | ||
ce88ac5b | 31 | static NORETURN void die_builtin(const char *err, va_list params) |
39a3f5ea | 32 | { |
ebaa79f4 | 33 | vreportf("fatal: ", err, params); |
39a3f5ea PB |
34 | exit(128); |
35 | } | |
36 | ||
ce88ac5b | 37 | static void error_builtin(const char *err, va_list params) |
39a3f5ea | 38 | { |
ebaa79f4 | 39 | vreportf("error: ", err, params); |
39a3f5ea PB |
40 | } |
41 | ||
fa39b6b5 SP |
42 | static void warn_builtin(const char *warn, va_list params) |
43 | { | |
ebaa79f4 | 44 | vreportf("warning: ", warn, params); |
fa39b6b5 | 45 | } |
39a3f5ea | 46 | |
c19a490e JK |
47 | static int die_is_recursing_builtin(void) |
48 | { | |
49 | static int dying; | |
50 | return dying++; | |
51 | } | |
52 | ||
39a3f5ea PB |
53 | /* If we are in a dlopen()ed .so write to a global variable would segfault |
54 | * (ugh), so keep things static. */ | |
64b1cb74 | 55 | static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin; |
18660bc9 | 56 | static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin; |
39a3f5ea | 57 | static void (*error_routine)(const char *err, va_list params) = error_builtin; |
fa39b6b5 | 58 | static void (*warn_routine)(const char *err, va_list params) = warn_builtin; |
c19a490e | 59 | static int (*die_is_recursing)(void) = die_is_recursing_builtin; |
39a3f5ea | 60 | |
18660bc9 | 61 | void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)) |
39a3f5ea PB |
62 | { |
63 | die_routine = routine; | |
64 | } | |
65 | ||
3bc4181f CB |
66 | void set_error_routine(void (*routine)(const char *err, va_list params)) |
67 | { | |
68 | error_routine = routine; | |
69 | } | |
70 | ||
725149be CC |
71 | void (*get_error_routine(void))(const char *err, va_list params) |
72 | { | |
73 | return error_routine; | |
74 | } | |
75 | ||
b83f108b CC |
76 | void set_warn_routine(void (*routine)(const char *warn, va_list params)) |
77 | { | |
78 | warn_routine = routine; | |
79 | } | |
80 | ||
725149be CC |
81 | void (*get_warn_routine(void))(const char *warn, va_list params) |
82 | { | |
83 | return warn_routine; | |
84 | } | |
85 | ||
c19a490e JK |
86 | void set_die_is_recursing_routine(int (*routine)(void)) |
87 | { | |
88 | die_is_recursing = routine; | |
89 | } | |
90 | ||
3b331e92 JK |
91 | void set_error_handle(FILE *fh) |
92 | { | |
93 | error_handle = fh; | |
94 | } | |
95 | ||
c2e86add | 96 | void NORETURN usagef(const char *err, ...) |
64b1cb74 JN |
97 | { |
98 | va_list params; | |
99 | ||
100 | va_start(params, err); | |
101 | usage_routine(err, params); | |
102 | va_end(params); | |
103 | } | |
104 | ||
c2e86add | 105 | void NORETURN usage(const char *err) |
39a3f5ea | 106 | { |
64b1cb74 | 107 | usagef("%s", err); |
39a3f5ea PB |
108 | } |
109 | ||
c2e86add | 110 | void NORETURN die(const char *err, ...) |
0fcfd160 LT |
111 | { |
112 | va_list params; | |
113 | ||
c19a490e | 114 | if (die_is_recursing()) { |
cd163d4b BC |
115 | fputs("fatal: recursion detected in die handler\n", stderr); |
116 | exit(128); | |
117 | } | |
cd163d4b | 118 | |
0fcfd160 | 119 | va_start(params, err); |
39a3f5ea | 120 | die_routine(err, params); |
0fcfd160 | 121 | va_end(params); |
0fcfd160 LT |
122 | } |
123 | ||
58e4e511 | 124 | static const char *fmt_with_err(char *buf, int n, const char *fmt) |
b875036e | 125 | { |
f8b5a8e1 JH |
126 | char str_error[256], *err; |
127 | int i, j; | |
128 | ||
129 | err = strerror(errno); | |
130 | for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) { | |
131 | if ((str_error[j++] = err[i++]) != '%') | |
132 | continue; | |
133 | if (j < sizeof(str_error) - 1) { | |
134 | str_error[j++] = '%'; | |
135 | } else { | |
136 | /* No room to double the '%', so we overwrite it with | |
137 | * '\0' below */ | |
138 | j--; | |
139 | break; | |
140 | } | |
141 | } | |
142 | str_error[j] = 0; | |
58e4e511 NTND |
143 | snprintf(buf, n, "%s: %s", fmt, str_error); |
144 | return buf; | |
145 | } | |
146 | ||
147 | void NORETURN die_errno(const char *fmt, ...) | |
148 | { | |
149 | char buf[1024]; | |
150 | va_list params; | |
151 | ||
152 | if (die_is_recursing()) { | |
153 | fputs("fatal: recursion detected in die_errno handler\n", | |
154 | stderr); | |
155 | exit(128); | |
156 | } | |
b875036e TR |
157 | |
158 | va_start(params, fmt); | |
58e4e511 | 159 | die_routine(fmt_with_err(buf, sizeof(buf), fmt), params); |
b875036e TR |
160 | va_end(params); |
161 | } | |
162 | ||
4df5e918 | 163 | #undef error_errno |
fd1d6723 NTND |
164 | int error_errno(const char *fmt, ...) |
165 | { | |
166 | char buf[1024]; | |
167 | va_list params; | |
168 | ||
169 | va_start(params, fmt); | |
170 | error_routine(fmt_with_err(buf, sizeof(buf), fmt), params); | |
171 | va_end(params); | |
172 | return -1; | |
173 | } | |
174 | ||
e208f9cc | 175 | #undef error |
0fcfd160 LT |
176 | int error(const char *err, ...) |
177 | { | |
178 | va_list params; | |
179 | ||
180 | va_start(params, err); | |
39a3f5ea | 181 | error_routine(err, params); |
0fcfd160 LT |
182 | va_end(params); |
183 | return -1; | |
184 | } | |
fa39b6b5 | 185 | |
fd1d6723 NTND |
186 | void warning_errno(const char *warn, ...) |
187 | { | |
188 | char buf[1024]; | |
189 | va_list params; | |
190 | ||
191 | va_start(params, warn); | |
192 | warn_routine(fmt_with_err(buf, sizeof(buf), warn), params); | |
193 | va_end(params); | |
194 | } | |
195 | ||
46efd2d9 | 196 | void warning(const char *warn, ...) |
fa39b6b5 SP |
197 | { |
198 | va_list params; | |
199 | ||
200 | va_start(params, warn); | |
201 | warn_routine(warn, params); | |
202 | va_end(params); | |
203 | } |