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/*
* Copyright (c) 2023 Egor Tensin <egor@tensin.name>
* This file is part of the "cimple" project.
* For details, see https://github.com/egor-tensin/cimple.
* Distributed under the MIT License.
*/
#include "cmd_line.h"
#include "const.h"
#include "file.h"
#include "log.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static char *get_current_binary_path(void)
{
return my_readlink("/proc/self/exe");
}
static char *get_current_binary_name(void)
{
char *path = get_current_binary_path();
if (!path)
return NULL;
char *name = basename(path);
char *result = strdup(name);
if (!result) {
log_errno("strdup");
goto free_path;
}
free_path:
free(path);
return result;
}
void exit_with_usage(int ec)
{
FILE *dest = stdout;
if (ec)
dest = stderr;
char *binary = get_current_binary_name();
fprintf(dest, "usage: %s %s\n", binary ? binary : "prog", get_usage_string());
free(binary);
exit(ec);
}
void exit_with_usage_err(const char *msg)
{
if (msg)
fprintf(stderr, "usage error: %s\n", msg);
exit_with_usage(1);
}
void exit_with_version(void)
{
char *binary = get_current_binary_name();
printf("%s v%s (%s)\n", binary ? binary : "prog", project_version, project_rev);
free(binary);
exit(0);
}
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