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/*
 * Copyright 2012 gitblit.com.
 *
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-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 com.gitblit.servlet;

import com.google.inject.Inject;
import com.google.inject.Singleton;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.gitblit.Constants;
import com.gitblit.manager.IRepositoryManager;
import com.gitblit.manager.IRuntimeManager;

/**
 * Serves the content of a gh-pages branch.
 *
 * @author James Moger
 *
 */
@Singleton
public class PagesServlet extends RawServlet {

	private static final long serialVersionUID = 1L;


	/**
	 * Returns an url to this servlet for the specified parameters.
	 *
	 * @param baseURL
	 * @param repository
	 * @param path
	 * @return an url
	 */
	public static String asLink(String baseURL, String repository, String path) {
		if (baseURL.length() > 0 && baseURL.charAt(baseURL.length() - 1) == '/') {
			baseURL = baseURL.substring(0, baseURL.length() - 1);
		}
		return baseURL + Constants.PAGES + repository + "/" + (path == null ? "" : ("/" + path));
	}

	@Inject
	public PagesServlet(
			IRuntimeManager runtimeManager,
			IRepositoryManager repositoryManager) {

		super(runtimeManager, repositoryManager);
	}

	@Override
	protected String getBranch(String repository, HttpServletRequest request) {
		return "gh-pages";
	}

	@Override
	protected String getPath(String repository, String branch, HttpServletRequest request) {
		String pi = request.getPathInfo().substring(1);
		if (pi.equals(repository)) {
			return "";
		}
		String path = pi.substring(pi.indexOf(repository) + repository.length() + 1);
		if (path.endsWith("/")) {
			path = path.substring(0, path.length() - 1);
		}
		return path;
	}

	@Override
	protected boolean renderIndex() {
		return true;
	}

	@Override
	protected void setContentType(HttpServletResponse response, String contentType) {
		response.setContentType(contentType);;
	}
}