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/*
* Copyright 2011 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;
import java.text.MessageFormat;
import java.util.List;
import javax.servlet.http.HttpServlet;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.gitblit.models.RepositoryModel;
import com.gitblit.utils.JGitUtils;
import com.gitblit.utils.StringUtils;
import com.gitblit.utils.SyndicationUtils;
import com.gitblit.wicket.WicketUtils;
public class SyndicationServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private transient Logger logger = LoggerFactory.getLogger(SyndicationServlet.class);
public static String asLink(String baseURL, String repository, String objectId, int length) {
if (baseURL.length() > 0 && baseURL.charAt(baseURL.length() - 1) == '/') {
baseURL = baseURL.substring(0, baseURL.length() - 1);
}
StringBuilder url = new StringBuilder();
url.append(baseURL);
url.append(Constants.SYNDICATION_PATH);
url.append(repository);
if (!StringUtils.isEmpty(objectId) || length > 0) {
StringBuilder parameters = new StringBuilder("?");
if (StringUtils.isEmpty(objectId)) {
parameters.append("l=");
parameters.append(length);
} else {
parameters.append("h=");
parameters.append(objectId);
if (length > 0) {
parameters.append("&l=");
parameters.append(length);
}
}
url.append(parameters);
}
return url.toString();
}
public static String getTitle(String repository, String objectId) {
String id = objectId;
if (!StringUtils.isEmpty(id)) {
if (id.startsWith(org.eclipse.jgit.lib.Constants.R_HEADS)) {
id = id.substring(org.eclipse.jgit.lib.Constants.R_HEADS.length());
} else if (id.startsWith(org.eclipse.jgit.lib.Constants.R_REMOTES)) {
id = id.substring(org.eclipse.jgit.lib.Constants.R_REMOTES.length());
} else if (id.startsWith(org.eclipse.jgit.lib.Constants.R_TAGS)) {
id = id.substring(org.eclipse.jgit.lib.Constants.R_TAGS.length());
}
}
return MessageFormat.format("{0} ({1})", repository, id);
}
private void processRequest(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException,
java.io.IOException {
String hostURL = WicketUtils.getHostURL(request);
String url = request.getRequestURI().substring(request.getServletPath().length());
if (url.charAt(0) == '/' && url.length() > 1) {
url = url.substring(1);
}
String repositoryName = url;
String objectId = request.getParameter("h");
String l = request.getParameter("l");
int length = GitBlit.getInteger(Keys.web.syndicationEntries, 25);
if (StringUtils.isEmpty(objectId)) {
objectId = org.eclipse.jgit.lib.Constants.HEAD;
}
if (!StringUtils.isEmpty(l)) {
try {
length = Integer.parseInt(l);
} catch (NumberFormatException x) {
}
}
Repository repository = GitBlit.self().getRepository(repositoryName);
RepositoryModel model = GitBlit.self().getRepositoryModel(repositoryName);
List<RevCommit> commits = JGitUtils.getRevLog(repository, objectId, 0, length);
try {
SyndicationUtils.toRSS(hostURL, getTitle(model.name, objectId), model.description,
model.name, commits, response.getOutputStream());
} catch (Exception e) {
logger.error("An error occurred during feed generation", e);
}
}
@Override
protected void doPost(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException,
java.io.IOException {
processRequest(request, response);
}
@Override
protected void doGet(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException,
java.io.IOException {
processRequest(request, response);
}
}
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