// *naka* - find a file within another file
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>

#include <ints.h>
#include <macros.h>
#include <version.h>

#include <project.h>

#include <tests.h>

#include <map.h>

void prog_info(FILE* out)
{
	fprintf(out, PROG_NAME " v%s - " PROG_DESCRIPTION
#ifdef DEBUG
	" (debug build)"
#endif
		"\n written by %s with <3 (compiled at %lu UTC (unix ts))\n  license %s.\n", 
			v_ctoss(v_rawtoc(PROG_VERSION)),
			PROG_AUTHOUR,
			PROG_COMPILED_TIMESTAMP,
			PROG_LICENSE);
}

void usage(FILE* out, int argc, char** argv)
{
	IGNORE(argc);

	prog_info(out);
	fprintf(out, "\nUsage: %s <needle> <haystack(s)...>\n", argv[0] ?: PROG_NAME);
}

// err: 0 for normal exit and print to stdout.
// err: nonzero for abnormal exit and print to stderr.
noreturn void usage_then_exit(int err, int argc, char** argv)
{
	usage( err ? stderr : stdout, argc, argv);
	exit(err);
}

int main(int argc, char** argv)
{
	TRACE("main start with %d (pn: %s, a1: %s)", argc, argv[0], argv[1] ?: "<null>");

	if(!argv[1] || !argv[2]) usage_then_exit(1, argc, argv);

	map_t needle;
	INFO("Mapping needle file `%s'", argv[1]);
	if(!map_handle_err(map_file(argv[1], false, 0, 0, &needle))) return 2;

	if(!map_handle_err(map_free(needle))) return 3;

	TRACE("main end");

	return 0;
}