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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 | 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 | ||
b83f108b CC |
73 | void set_warn_routine(void (*routine)(const char *warn, va_list params)) |
74 | { | |
75 | warn_routine = routine; | |
76 | } | |
77 | ||
c19a490e JK |
78 | void set_die_is_recursing_routine(int (*routine)(void)) |
79 | { | |
80 | die_is_recursing = routine; | |
81 | } | |
82 | ||
3b331e92 JK |
83 | void set_error_handle(FILE *fh) |
84 | { | |
85 | error_handle = fh; | |
f4c3edc0 | 86 | tweaked_error_buffering = 0; |
3b331e92 JK |
87 | } |
88 | ||
c2e86add | 89 | void NORETURN usagef(const char *err, ...) |
64b1cb74 JN |
90 | { |
91 | va_list params; | |
92 | ||
93 | va_start(params, err); | |
94 | usage_routine(err, params); | |
95 | va_end(params); | |
96 | } | |
97 | ||
c2e86add | 98 | void NORETURN usage(const char *err) |
39a3f5ea | 99 | { |
64b1cb74 | 100 | usagef("%s", err); |
39a3f5ea PB |
101 | } |
102 | ||
c2e86add | 103 | void NORETURN die(const char *err, ...) |
0fcfd160 LT |
104 | { |
105 | va_list params; | |
106 | ||
c19a490e | 107 | if (die_is_recursing()) { |
cd163d4b BC |
108 | fputs("fatal: recursion detected in die handler\n", stderr); |
109 | exit(128); | |
110 | } | |
cd163d4b | 111 | |
0fcfd160 | 112 | va_start(params, err); |
39a3f5ea | 113 | die_routine(err, params); |
0fcfd160 | 114 | va_end(params); |
0fcfd160 LT |
115 | } |
116 | ||
58e4e511 | 117 | static const char *fmt_with_err(char *buf, int n, const char *fmt) |
b875036e | 118 | { |
f8b5a8e1 JH |
119 | char str_error[256], *err; |
120 | int i, j; | |
121 | ||
122 | err = strerror(errno); | |
123 | for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) { | |
124 | if ((str_error[j++] = err[i++]) != '%') | |
125 | continue; | |
126 | if (j < sizeof(str_error) - 1) { | |
127 | str_error[j++] = '%'; | |
128 | } else { | |
129 | /* No room to double the '%', so we overwrite it with | |
130 | * '\0' below */ | |
131 | j--; | |
132 | break; | |
133 | } | |
134 | } | |
135 | str_error[j] = 0; | |
58e4e511 NTND |
136 | snprintf(buf, n, "%s: %s", fmt, str_error); |
137 | return buf; | |
138 | } | |
139 | ||
140 | void NORETURN die_errno(const char *fmt, ...) | |
141 | { | |
142 | char buf[1024]; | |
143 | va_list params; | |
144 | ||
145 | if (die_is_recursing()) { | |
146 | fputs("fatal: recursion detected in die_errno handler\n", | |
147 | stderr); | |
148 | exit(128); | |
149 | } | |
b875036e TR |
150 | |
151 | va_start(params, fmt); | |
58e4e511 | 152 | die_routine(fmt_with_err(buf, sizeof(buf), fmt), params); |
b875036e TR |
153 | va_end(params); |
154 | } | |
155 | ||
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 | } |