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tag: v1.4.2-rc4
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Octocat-spinner-32-eaf2f5

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/*
* GIT - The information manager from hell
*
* Copyright (C) Linus Torvalds, 2005
*/
#include "git-compat-util.h"

static void report(const char *prefix, const char *err, va_list params)
{
fputs(prefix, stderr);
vfprintf(stderr, err, params);
fputs("\n", stderr);
}

static NORETURN void usage_builtin(const char *err)
{
fprintf(stderr, "usage: %s\n", err);
exit(129);
}

static NORETURN void die_builtin(const char *err, va_list params)
{
report("fatal: ", err, params);
exit(128);
}

static void error_builtin(const char *err, va_list params)
{
report("error: ", err, params);
}


/* If we are in a dlopen()ed .so write to a global variable would segfault
* (ugh), so keep things static. */
static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin;
static void (*error_routine)(const char *err, va_list params) = error_builtin;

void set_usage_routine(void (*routine)(const char *err) NORETURN)
{
usage_routine = routine;
}

void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN)
{
die_routine = routine;
}

void set_error_routine(void (*routine)(const char *err, va_list params))
{
error_routine = routine;
}


void usage(const char *err)
{
usage_routine(err);
}

void die(const char *err, ...)
{
va_list params;

va_start(params, err);
die_routine(err, params);
va_end(params);
}

int error(const char *err, ...)
{
va_list params;

va_start(params, err);
error_routine(err, params);
va_end(params);
return -1;
}
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