| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.tools.mail; |
| |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| |
| /** |
| * A wrapper around the raw input from the SMTP server that assembles |
| * multi line responses into a single String. |
| * |
| * <p>The same rules used here would apply to FTP and other Telnet |
| * based protocols as well.</p> |
| * |
| */ |
| public class SmtpResponseReader { |
| // CheckStyle:VisibilityModifier OFF - bc |
| protected BufferedReader reader = null; |
| // CheckStyle:VisibilityModifier ON |
| private StringBuffer result = new StringBuffer(); |
| |
| /** |
| * Wrap this input stream. |
| * @param in the stream to wrap. |
| */ |
| public SmtpResponseReader(InputStream in) { |
| reader = new BufferedReader(new InputStreamReader(in)); |
| } |
| |
| /** |
| * Read until the server indicates that the response is complete. |
| * |
| * @return Responsecode (3 digits) + Blank + Text from all |
| * response line concatenated (with blanks replacing the \r\n |
| * sequences). |
| * @throws IOException on error. |
| */ |
| public String getResponse() throws IOException { |
| result.setLength(0); |
| String line = reader.readLine(); |
| // CheckStyle:MagicNumber OFF |
| if (line != null && line.length() >= 3) { |
| result.append(line.substring(0, 3)); |
| result.append(" "); |
| } |
| // CheckStyle:MagicNumber ON |
| |
| while (line != null) { |
| append(line); |
| if (!hasMoreLines(line)) { |
| break; |
| } |
| line = reader.readLine(); |
| } |
| return result.toString().trim(); |
| } |
| |
| /** |
| * Closes the underlying stream. |
| * @throws IOException on error. |
| */ |
| public void close() throws IOException { |
| reader.close(); |
| } |
| |
| /** |
| * Should we expect more input? |
| * @param line the line to check. |
| * @return true if there are more lines to check. |
| */ |
| protected boolean hasMoreLines(String line) { |
| // CheckStyle:MagicNumber OFF |
| return line.length() > 3 && line.charAt(3) == '-'; |
| // CheckStyle:MagicNumber ON |
| } |
| |
| /** |
| * Append the text from this line of the resonse. |
| */ |
| private void append(String line) { |
| // CheckStyle:MagicNumber OFF |
| if (line.length() > 4) { |
| result.append(line.substring(4)); |
| result.append(" "); |
| } |
| // CheckStyle:MagicNumber ON |
| } |
| } |