84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
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/*
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* usage.c
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*
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* Various reporting routines.
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* Originally copied from GIT source.
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include "util.h"
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#include "debug.h"
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static void report(const char *prefix, const char *err, va_list params)
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{
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char msg[1024];
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vsnprintf(msg, sizeof(msg), err, params);
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fprintf(stderr, " %s%s\n", prefix, msg);
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}
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static NORETURN void usage_builtin(const char *err)
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{
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fprintf(stderr, "\n Usage: %s\n", err);
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exit(129);
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}
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static NORETURN void die_builtin(const char *err, va_list params)
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{
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report(" Fatal: ", err, params);
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exit(128);
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}
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static void error_builtin(const char *err, va_list params)
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{
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report(" Error: ", err, params);
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}
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static void warn_builtin(const char *warn, va_list params)
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{
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report(" Warning: ", warn, params);
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}
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/* If we are in a dlopen()ed .so write to a global variable would segfault
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* (ugh), so keep things static. */
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static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
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static void (*error_routine)(const char *err, va_list params) = error_builtin;
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static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
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void set_warning_routine(void (*routine)(const char *err, va_list params))
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{
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warn_routine = routine;
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}
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void usage(const char *err)
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{
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usage_routine(err);
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}
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void die(const char *err, ...)
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{
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va_list params;
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va_start(params, err);
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die_builtin(err, params);
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va_end(params);
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}
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int error(const char *err, ...)
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{
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va_list params;
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va_start(params, err);
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error_routine(err, params);
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va_end(params);
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return -1;
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}
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void warning(const char *warn, ...)
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{
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va_list params;
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va_start(params, warn);
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warn_routine(warn, params);
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va_end(params);
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}
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