| /*=============================================================================# |
| # Copyright (c) 2018, 2019 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.rhelp.core.http; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| |
| @NonNullByDefault |
| public class SimpleResourceHandler implements ResourceHandler { |
| |
| |
| private final MimeTypes defaultMimeTypes; |
| private @Nullable MimeTypes specialMimeTypes; |
| |
| private @Nullable String cacheControl; |
| |
| |
| public SimpleResourceHandler(final MimeTypes mimeTypes) { |
| this.defaultMimeTypes= mimeTypes; |
| } |
| |
| |
| @Override |
| public void setSpecialMimeTypes(final MimeTypes types) { |
| this.specialMimeTypes= types; |
| } |
| |
| private @Nullable String getMimeType(final String fileName) { |
| String type= null; |
| if (this.specialMimeTypes != null) { |
| type= this.specialMimeTypes.getMimeType(fileName); |
| } |
| if (type == null) { |
| type= this.defaultMimeTypes.getMimeType(fileName); |
| } |
| return type; |
| } |
| |
| @Override |
| public void setCacheControl(final String value) { |
| this.cacheControl= value; |
| } |
| |
| @Override |
| public void doGet(final Path file, |
| final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException { |
| try (final InputStream in= Files.newInputStream(file)) { |
| in.available(); |
| final byte[] buffer= new byte[1024]; |
| |
| { final String mimeType= getMimeType(file.getFileName().toString()); |
| if (mimeType != null) { |
| resp.setContentType(mimeType); |
| } |
| } |
| { final String cacheControl= this.cacheControl; |
| if (cacheControl != null) { |
| resp.setHeader("Cache-Control", cacheControl); //$NON-NLS-1$ |
| } |
| } |
| |
| final ServletOutputStream outputStream= resp.getOutputStream(); |
| int n= 0; |
| while ((n= in.read(buffer, 0, 1024)) >= 0) { |
| outputStream.write(buffer, 0, n); |
| } |
| outputStream.close(); |
| } |
| } |
| |
| } |