/*
    * Copyright (C) 2009-2010, Google Inc. and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  
  package org.eclipse.jgit.http.server;
  
  import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
  import static org.eclipse.jgit.http.server.ServletUtils.getRepository;
  import static org.eclipse.jgit.http.server.ServletUtils.send;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.eclipse.jgit.util.HttpSupport;
  import org.eclipse.jgit.util.IO;
  
  /** Sends a small text meta file from the repository. */
  class TextFileServlet extends HttpServlet {
  	private static final long serialVersionUID = 1L;
  
  	private final String fileName;
  
  	TextFileServlet(String name) {
  		this.fileName = name;
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public void doGet(final HttpServletRequest req,
  			final HttpServletResponse rsp) throws IOException {
  		try {
  			rsp.setContentType(HttpSupport.TEXT_PLAIN);
  			send(read(req), req, rsp);
  		} catch (FileNotFoundException noFile) {
  			rsp.sendError(SC_NOT_FOUND);
  		}
  	}
  
  	private byte[] read(HttpServletRequest req) throws IOException {
  		final File gitdir = getRepository(req).getDirectory();
  		if (gitdir == null)
  			throw new FileNotFoundException(fileName);
  		return IO.readFully(new File(gitdir, fileName));
  	}
  }