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From s...@apache.org
Subject svn commit: r1084715 - in /commons/proper/net/trunk/src/main/java/org/apache/commons/net: imap/IMAP.java io/CRLFLineReader.java
Date Wed, 23 Mar 2011 20:12:31 GMT
Author: sebb
Date: Wed Mar 23 20:12:30 2011
New Revision: 1084715

URL: http://svn.apache.org/viewvc?rev=1084715&view=rev
Log:
IMAP responses can contain bare CR and/or LF, so need version of readLine() that is strict
about this

Added:
    commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java 
 (with props)
Modified:
    commons/proper/net/trunk/src/main/java/org/apache/commons/net/imap/IMAP.java

Modified: commons/proper/net/trunk/src/main/java/org/apache/commons/net/imap/IMAP.java
URL: http://svn.apache.org/viewvc/commons/proper/net/trunk/src/main/java/org/apache/commons/net/imap/IMAP.java?rev=1084715&r1=1084714&r2=1084715&view=diff
==============================================================================
--- commons/proper/net/trunk/src/main/java/org/apache/commons/net/imap/IMAP.java (original)
+++ commons/proper/net/trunk/src/main/java/org/apache/commons/net/imap/IMAP.java Wed Mar 23
20:12:30 2011
@@ -30,6 +30,7 @@ import org.apache.commons.net.MalformedS
 import org.apache.commons.net.ProtocolCommandListener;
 import org.apache.commons.net.ProtocolCommandSupport;
 import org.apache.commons.net.SocketClient;
+import org.apache.commons.net.io.CRLFLineReader;
 
 
 /**
@@ -174,7 +175,7 @@ public class IMAP extends SocketClient
     {
         super._connectAction_();
         _reader =
-          new BufferedReader(new InputStreamReader(_input_,
+          new CRLFLineReader(new InputStreamReader(_input_,
                                                    __DEFAULT_ENCODING));
         __writer =
           new BufferedWriter(new OutputStreamWriter(_output_,

Added: commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java
URL: http://svn.apache.org/viewvc/commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java?rev=1084715&view=auto
==============================================================================
--- commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java (added)
+++ commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java Wed
Mar 23 20:12:30 2011
@@ -0,0 +1,77 @@
+/*
+ * 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.commons.net.io;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.Reader;
+
+/**
+ * CRLFLineReader implements a readLine() method that requires
+ * exactly CRLF to terminate an input line.
+ * This is required for IMAP, which allows bare CR and LF.
+ *
+ * @since 3.0
+ */
+public final class CRLFLineReader extends BufferedReader
+{
+    private static final char LF = '\n';
+    private static final char CR = '\r';
+
+    /**
+     * Creates a CRLFLineReader that wraps an existing Reader
+     * input source.
+     * @param reader  The Reader input source.
+     */
+    public CRLFLineReader(Reader reader)
+    {
+        super(reader);
+    }
+
+    /**
+     * Read a line of text.
+     * A line is considered to be terminated by carriage return followed immediately by a
linefeed.
+     * This contrasts with BufferedReader which also allows other combinations.
+     * @since 3.0
+     */
+    @Override
+    public String readLine() throws IOException {
+        StringBuilder sb = new StringBuilder();
+        int intch;
+        boolean prevWasCR = false;
+        synchronized(lock) { // make thread-safe (hopefully!)
+            while((intch = read()) != -1)
+            {
+                if (prevWasCR && intch == LF) {
+                    return sb.substring(0, sb.length()-1);
+                }
+                if (intch == CR) {
+                    prevWasCR = true;
+                } else {
+                    prevWasCR = false;
+                }
+                sb.append((char) intch);
+            }
+        }
+        String string = sb.toString();
+        if (string.length() == 0) { // immediate EOF
+            return null;
+        }
+        return string;
+    }
+}

Propchange: commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java
------------------------------------------------------------------------------
    svn:eol-style = native

Propchange: commons/proper/net/trunk/src/main/java/org/apache/commons/net/io/CRLFLineReader.java
------------------------------------------------------------------------------
    svn:keywords = Author Date Id Revision



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