| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.BufferedInputStream; |
| import java.io.BufferedOutputStream; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.StringWriter; |
| import java.net.Socket; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Collections; |
| |
| public class CustomEditor implements AutoCloseable { |
| |
| public static final int SOURCE_CODE = 0; |
| public static final int GET_SOURCE_CODE = 1; |
| public static final int REMOVE_CODE = 2; |
| |
| public static final int EXIT_CODE = -1; |
| public static final int ACCEPT_CODE = -2; |
| public static final int CANCEL_CODE = -3; |
| |
| private final Socket socket; |
| private final Path path; |
| private final StringWriter writer; |
| private final String source; |
| |
| public CustomEditor(int port, String fileName) throws IOException { |
| this.socket = new Socket((String) null, port); |
| this.path = Paths.get(fileName); |
| this.writer = new StringWriter(); |
| this.source = new String(Files.readAllBytes(path), StandardCharsets.UTF_8); |
| } |
| |
| public void loop() throws IOException { |
| DataInputStream input = new DataInputStream(new BufferedInputStream(socket.getInputStream())); |
| DataOutputStream output = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream())); |
| |
| while (true) { |
| int cmd = input.readInt(); |
| switch (cmd) { |
| case EXIT_CODE: { |
| Files.write(path, Collections.singletonList(writer.toString())); |
| return; |
| } |
| case GET_SOURCE_CODE: { |
| byte[] bytes = source.getBytes(StandardCharsets.UTF_8); |
| output.writeInt(bytes.length); |
| output.write(bytes); |
| output.flush(); |
| break; |
| } |
| case REMOVE_CODE: { |
| // only for external editor |
| Files.delete(path); |
| break; |
| } |
| case CANCEL_CODE: { |
| return; |
| } |
| case ACCEPT_CODE: { |
| Files.write(path, Collections.singletonList(writer.toString())); |
| break; |
| } |
| case SOURCE_CODE: { |
| int length = input.readInt(); |
| byte[] bytes = new byte[length]; |
| input.readFully(bytes); |
| writer.write(new String(bytes, StandardCharsets.UTF_8)); |
| break; |
| } |
| } |
| } |
| } |
| |
| public static void main(String[] args) throws IOException { |
| if (args.length != 2) { |
| System.err.println("Usage: port file"); |
| System.exit(1); |
| } |
| try (CustomEditor editor = new CustomEditor(Integer.parseInt(args[0]), args[1])) { |
| editor.loop(); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| socket.close(); |
| } |
| } |