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;
17 vsnprintf(msg, sizeof(msg), err, params);
18 for (p = msg; *p; p++) {
19 if (iscntrl(*p) && *p != '\t' && *p != '\n')
22 fprintf(fh, "%s%s\n", prefix, msg);
25 static NORETURN void usage_builtin(const char *err, va_list params)
27 vreportf("usage: ", err, params);
31 static NORETURN void die_builtin(const char *err, va_list params)
33 vreportf("fatal: ", err, params);
37 static void error_builtin(const char *err, va_list params)
39 vreportf("error: ", err, params);
42 static void warn_builtin(const char *warn, va_list params)
44 vreportf("warning: ", warn, params);
47 static int die_is_recursing_builtin(void)
53 /* If we are in a dlopen()ed .so write to a global variable would segfault
54 * (ugh), so keep things static. */
55 static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin;
56 static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin;
57 static void (*error_routine)(const char *err, va_list params) = error_builtin;
58 static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
59 static int (*die_is_recursing)(void) = die_is_recursing_builtin;
61 void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params))
63 die_routine = routine;
66 void set_error_routine(void (*routine)(const char *err, va_list params))
68 error_routine = routine;
71 void (*get_error_routine(void))(const char *err, va_list params)
76 void set_warn_routine(void (*routine)(const char *warn, va_list params))
78 warn_routine = routine;
81 void (*get_warn_routine(void))(const char *warn, va_list params)
86 void set_die_is_recursing_routine(int (*routine)(void))
88 die_is_recursing = routine;
91 void set_error_handle(FILE *fh)
96 void NORETURN usagef(const char *err, ...)
100 va_start(params, err);
101 usage_routine(err, params);
105 void NORETURN usage(const char *err)
110 void NORETURN die(const char *err, ...)
114 if (die_is_recursing()) {
115 fputs("fatal: recursion detected in die handler\n", stderr);
119 va_start(params, err);
120 die_routine(err, params);
124 static const char *fmt_with_err(char *buf, int n, const char *fmt)
126 char str_error[256], *err;
129 err = strerror(errno);
130 for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
131 if ((str_error[j++] = err[i++]) != '%')
133 if (j < sizeof(str_error) - 1) {
134 str_error[j++] = '%';
136 /* No room to double the '%', so we overwrite it with
143 snprintf(buf, n, "%s: %s", fmt, str_error);
147 void NORETURN die_errno(const char *fmt, ...)
152 if (die_is_recursing()) {
153 fputs("fatal: recursion detected in die_errno handler\n",
158 va_start(params, fmt);
159 die_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
164 int error_errno(const char *fmt, ...)
169 va_start(params, fmt);
170 error_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
176 int error(const char *err, ...)
180 va_start(params, err);
181 error_routine(err, params);
186 void warning_errno(const char *warn, ...)
191 va_start(params, warn);
192 warn_routine(fmt_with_err(buf, sizeof(buf), warn), params);
196 void warning(const char *warn, ...)
200 va_start(params, warn);
201 warn_routine(warn, params);