// Copyright (c) 2013, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/

#include "util.h"

#include <cstdlib>
#include <fstream>
#include <sstream>
#include <stdexcept>

namespace util {
bool compare(agi::fs::path const& file1, agi::fs::path const& file2) {
	std::stringstream ss1, ss2;
	std::ifstream if1(file1, std::ios::binary), if2(file2, std::ios::binary);
	ss1 << if1.rdbuf();
	ss2 << if2.rdbuf();
	return ss1.str() == ss2.str();
}

int write_rand(const char *path) {
	int value = rand();
	std::ofstream of(path);
	of << value;
	return value;
}

int read_written_rand(const char *path) {
	int value;
	std::ifstream i(path);
	i >> value;
	return value;
}

agi::fs::path test_data_dir() {
	const char *path = std::getenv("AEGISUB_TEST_DATA_DIR");
	if (!path)
		throw std::runtime_error("AEGISUB_TEST_DATA_DIR not set in environment");
	return path;
}
}
