ccan/ccan/argcheck/_info

#include "config.h"
#include <stdio.h>
#include <string.h>

/**
 * argcheck - macros to check arguments at runtime
 *
 * This code provides some macros to check arguments for valid value ranges.
 * Consider this a mild version of assert(3), because all it does is to log
 * a message and continue.
 *
 * These macros don't replace error handling, but they are useful in
 * situations where an error is unexpected but not common, i.e.
 * "this shouldn't happen but if it does let me know".
 *
 * argcheck's error messages can be disabled by defining
 * ARGCHECK_DISABLE_LOGGING before including the header file. The conditions
 * will continue to evaluate but no error messages will be generated. It is thus
 * safe to use argcheck macros inside if conditions.
 *
 * By default, argcheck prints to fprintf(stderr). That can be changed by
 * defining argcheck_log to a custom log function. See argcheck_log_() for the
 * function signature. If ARGCHECK_DISABLE_LOGGING is defined, the custom log
 * function is not called.
 *
 * Example:
 *	#include <stdio.h>
 *	#include <ccan/argcheck/argcheck.h>
 *
 *	enum state { S1, S2, S3 };
 *
 *	static int some_state_machine(enum state s) {
 *	    int b;
 *
 *	    argcheck_int_range(s, S1, S3);
 *
 *	    switch(s) {
 *		case S1: b = 8; break;
 *		case S2: b = 9; break;
 *		case S3: b = 88; break;
 *	 	default:
 *			break;
 *	    }
 *
 *	    return b;
 *      }
 *
 *	int main(int argc, char *argv[]) {
 *	    int a = S1;
 *
 * 	    if (!argcheck_int_gt(argc, 1))
 *		return 1;
 *
 *	    return some_state_machine(a);
 *      }
 *
 * Author: Peter Hutterer <peter.hutterer@who-t.net>
 * Maintainer: Peter Hutterer <peter.hutterer@who-t.net>
 * License: BSD-MIT
 */

int main(int argc, char *argv[])
{
	/* Expect exactly one argument */
	if (argc != 2)
		return 1;

	if (strcmp(argv[1], "depends") == 0) {
		printf("ccan/likely\n");
		printf("ccan/compiler\n");
		return 0;
	}

	return 1;
}