2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
6 #include "git-compat-util.h"
9 static FILE *error_handle;
11 void vreportf(const char *prefix, const char *err, va_list params)
14 FILE *fh = error_handle ? error_handle : stderr;
15 vsnprintf(msg, sizeof(msg), err, params);
16 fprintf(fh, "%s%s\n", prefix, msg);
19 static NORETURN void usage_builtin(const char *err, va_list params)
21 vreportf("usage: ", err, params);
25 static NORETURN void die_builtin(const char *err, va_list params)
27 vreportf("fatal: ", err, params);
31 static void error_builtin(const char *err, va_list params)
33 vreportf("error: ", err, params);
36 static void warn_builtin(const char *warn, va_list params)
38 vreportf("warning: ", warn, params);
41 static int die_is_recursing_builtin(void)
47 /* If we are in a dlopen()ed .so write to a global variable would segfault
48 * (ugh), so keep things static. */
49 static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin;
50 static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin;
51 static void (*error_routine)(const char *err, va_list params) = error_builtin;
52 static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
53 static int (*die_is_recursing)(void) = die_is_recursing_builtin;
55 void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params))
57 die_routine = routine;
60 void set_error_routine(void (*routine)(const char *err, va_list params))
62 error_routine = routine;
65 void set_die_is_recursing_routine(int (*routine)(void))
67 die_is_recursing = routine;
70 void set_error_handle(FILE *fh)
75 void NORETURN usagef(const char *err, ...)
79 va_start(params, err);
80 usage_routine(err, params);
84 void NORETURN usage(const char *err)
89 void NORETURN die(const char *err, ...)
93 if (die_is_recursing()) {
94 fputs("fatal: recursion detected in die handler\n", stderr);
98 va_start(params, err);
99 die_routine(err, params);
103 void NORETURN die_errno(const char *fmt, ...)
106 char fmt_with_err[1024];
107 char str_error[256], *err;
110 if (die_is_recursing()) {
111 fputs("fatal: recursion detected in die_errno handler\n",
116 err = strerror(errno);
117 for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
118 if ((str_error[j++] = err[i++]) != '%')
120 if (j < sizeof(str_error) - 1) {
121 str_error[j++] = '%';
123 /* No room to double the '%', so we overwrite it with
130 snprintf(fmt_with_err, sizeof(fmt_with_err), "%s: %s", fmt, str_error);
132 va_start(params, fmt);
133 die_routine(fmt_with_err, params);
138 int error(const char *err, ...)
142 va_start(params, err);
143 error_routine(err, params);
148 void warning(const char *warn, ...)
152 va_start(params, warn);
153 warn_routine(warn, params);