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Kuali Utilities

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/**
 * Copyright 2010-2014 The Kuali Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.opensource.org/licenses/ecl2.php
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.kuali.common.util.file;

import static org.kuali.common.util.base.Exceptions.illegalState;
import static org.kuali.common.util.base.Precondition.checkNotBlank;
import static org.kuali.common.util.base.Precondition.checkNotNull;

import java.io.File;
import java.io.IOException;

public final class Files {

	public static File currentWorkingDirectory() {
		return getCanonicalFile(".");
	}

	public static File getCanonicalFile(File file) {
		try {
			return new File(checkNotNull(file, "file").getCanonicalPath());
		} catch (IOException e) {
			throw illegalState(e);
		}
	}

	public static File getCanonicalFile(String path) {
		return getCanonicalFile(new File(checkNotBlank(path, "path")));
	}

	public static File getCanonicalFile(File parent, String child) {
		return getCanonicalFile(new File(parent, checkNotBlank(child, "child")));
	}
}