1 files changed, 173 insertions, 0 deletions
diff --git a/qpid/java/common/src/main/java/org/apache/qpid/url/URLHelper.java b/qpid/java/common/src/main/java/org/apache/qpid/url/URLHelper.java
new file mode 100644
index 0000000000..6f21c327e7
--- /dev/null
+++ b/qpid/java/common/src/main/java/org/apache/qpid/url/URLHelper.java
@@ -0,0 +1,173 @@
+/*
+ *
+ * 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.qpid.url;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class URLHelper
+{
+    public static final char DEFAULT_OPTION_SEPERATOR = '&';
+    public static final char ALTERNATIVE_OPTION_SEPARATOR = ',';
+    public static final char BROKER_SEPARATOR = ';';
+
+    public static void parseOptions(Map<String, String> optionMap, String options) throws URLSyntaxException
+    {
+        // options looks like this
+        // brokerlist='tcp://host:port?option='value',option='value';vm://:3/virtualpath?option='value'',failover='method?option='value',option='value''
+
+        if ((options == null) || (options.indexOf('=') == -1))
+        {
+            return;
+        }
+
+        int optionIndex = options.indexOf('=');
+
+        String option = options.substring(0, optionIndex);
+
+        int length = options.length();
+
+        int nestedQuotes = 0;
+
+        // to store index of final "'"
+        int valueIndex = optionIndex;
+
+        // Walk remainder of url.
+        while ((nestedQuotes > 0) || (valueIndex < length))
+        {
+            valueIndex++;
+
+            if (valueIndex >= length)
+            {
+                break;
+            }
+
+            if (options.charAt(valueIndex) == '\'')
+            {
+                if ((valueIndex + 1) < options.length())
+                {
+                    if ((options.charAt(valueIndex + 1) == DEFAULT_OPTION_SEPERATOR)
+                            || (options.charAt(valueIndex + 1) == ALTERNATIVE_OPTION_SEPARATOR)
+                            || (options.charAt(valueIndex + 1) == BROKER_SEPARATOR)
+                            || (options.charAt(valueIndex + 1) == '\''))
+                    {
+                        nestedQuotes--;
+
+                        if (nestedQuotes == 0)
+                        {
+                            // We've found the value of an option
+                            break;
+                        }
+                    }
+                    else
+                    {
+                        nestedQuotes++;
+                    }
+                }
+                else
+                {
+                    // We are at the end of the string
+                    // Check to see if we are corectly closing quotes
+                    if (options.charAt(valueIndex) == '\'')
+                    {
+                        nestedQuotes--;
+                    }
+
+                    break;
+                }
+            }
+        }
+
+        if ((nestedQuotes != 0) || (valueIndex < (optionIndex + 2)))
+        {
+            int sepIndex = 0;
+
+            // Try and identify illegal separator character
+            if (nestedQuotes > 1)
+            {
+                for (int i = 0; i < nestedQuotes; i++)
+                {
+                    sepIndex = options.indexOf('\'', sepIndex);
+                    sepIndex++;
+                }
+            }
+
+            if ((sepIndex >= options.length()) || (sepIndex == 0))
+            {
+                throw parseError(valueIndex, "Unterminated option", options);
+            }
+            else
+            {
+                throw parseError(sepIndex, "Unterminated option. Possible illegal option separator:'"
+                    + options.charAt(sepIndex) + "'", options);
+            }
+        }
+
+        // optionIndex +2 to skip "='"
+        String value = options.substring(optionIndex + 2, valueIndex);
+
+        optionMap.put(option, value);
+
+        if (valueIndex < (options.length() - 1))
+        {
+            // Recurse to get remaining options
+            parseOptions(optionMap, options.substring(valueIndex + 2));
+        }
+    }
+
+    public static URLSyntaxException parseError(int index, String error, String url)
+    {
+        return parseError(index, 1, error, url);
+    }
+
+    public static URLSyntaxException parseError(int index, int length, String error, String url)
+    {
+        return new URLSyntaxException(url, error, index, length);
+    }
+
+    public static String printOptions(Map<String, String> options)
+    {
+        if (options.isEmpty())
+        {
+            return "";
+        }
+        else
+        {
+            StringBuffer sb = new StringBuffer();
+            sb.append('?');
+            for (String key : options.keySet())
+            {
+                sb.append(key);
+
+                sb.append("='");
+
+                sb.append(options.get(key));
+
+                sb.append("'");
+                sb.append(DEFAULT_OPTION_SEPERATOR);
+            }
+
+            sb.deleteCharAt(sb.length() - 1);
+
+            return sb.toString();
+        }
+    }
+}