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/*
 *  Copyright 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.osedu.org/licenses/ECL-2.0
 *
 *	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 io.github.svndump_to_git.git.model.tree.utils;

import java.util.concurrent.atomic.AtomicInteger;

import io.github.svndump_to_git.git.model.tree.GitTreeData;
import org.eclipse.jgit.lib.ObjectId;

/**
 * @author Kuali Student Team
 *
 */
public final class GitTreeDataUtils {

	/**
	 * 
	 */
	private GitTreeDataUtils() {
	}

	private static class BlobCountingVisitor implements GitTreeData.GitTreeDataVisitor {

		private AtomicInteger counter = new AtomicInteger(0);
		
		/* (non-Javadoc)
		 * @see org.kuali.student.git.model.GitTreeData.GitTreeDataVisitor#visitBlob(java.lang.String, java.lang.String)
		 */
		@Override
		public boolean visitBlob(String name, ObjectId objectId) {
			counter.addAndGet(1);
			
			return true;
		}

		/**
		 * @return the counter
		 */
		public AtomicInteger getCounter() {
			return counter;
		}
		
		
		
	}
	
	public static int countBlobs(GitTreeData existingTreeData) {
		
		BlobCountingVisitor visitor;
		
		existingTreeData.visit(visitor = new BlobCountingVisitor());
		
		return visitor.getCounter().intValue();
	}
	

}