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+/*
+ * ====================================================================
+ * 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+
+package ch.boye.httpclientandroidlib.protocol;
+
+import ch.boye.httpclientandroidlib.HttpRequest;
+import ch.boye.httpclientandroidlib.annotation.ThreadSafe;
+import ch.boye.httpclientandroidlib.util.Args;
+
+/**
+ * Maintains a map of HTTP request handlers keyed by a request URI pattern.
+ * <br>
+ * Patterns may have three formats:
+ * <ul>
+ * <li><code>*</code></li>
+ * <li><code>*&lt;uri&gt;</code></li>
+ * <li><code>&lt;uri&gt;*</code></li>
+ * </ul>
+ * <br>
+ * This class can be used to map an instance of
+ * {@link HttpRequestHandler} matching a particular request URI. Usually the
+ * mapped request handler will be used to process the request with the
+ * specified request URI.
+ *
+ * @since 4.3
+ */
+@ThreadSafe // provided injected dependencies are thread-safe
+public class UriHttpRequestHandlerMapper implements HttpRequestHandlerMapper {
+
+ private final UriPatternMatcher<HttpRequestHandler> matcher;
+
+ protected UriHttpRequestHandlerMapper(final UriPatternMatcher<HttpRequestHandler> matcher) {
+ super();
+ this.matcher = Args.notNull(matcher, "Pattern matcher");
+ }
+
+ public UriHttpRequestHandlerMapper() {
+ this(new UriPatternMatcher<HttpRequestHandler>());
+ }
+
+ /**
+ * Registers the given {@link HttpRequestHandler} as a handler for URIs
+ * matching the given pattern.
+ *
+ * @param pattern the pattern to register the handler for.
+ * @param handler the handler.
+ */
+ public void register(final String pattern, final HttpRequestHandler handler) {
+ Args.notNull(pattern, "Pattern");
+ Args.notNull(handler, "Handler");
+ matcher.register(pattern, handler);
+ }
+
+ /**
+ * Removes registered handler, if exists, for the given pattern.
+ *
+ * @param pattern the pattern to unregister the handler for.
+ */
+ public void unregister(final String pattern) {
+ matcher.unregister(pattern);
+ }
+
+ /**
+ * Extracts request path from the given {@link HttpRequest}
+ */
+ protected String getRequestPath(final HttpRequest request) {
+ String uriPath = request.getRequestLine().getUri();
+ int index = uriPath.indexOf("?");
+ if (index != -1) {
+ uriPath = uriPath.substring(0, index);
+ } else {
+ index = uriPath.indexOf("#");
+ if (index != -1) {
+ uriPath = uriPath.substring(0, index);
+ }
+ }
+ return uriPath;
+ }
+
+ /**
+ * Looks up a handler matching the given request URI.
+ *
+ * @param request the request
+ * @return handler or <code>null</code> if no match is found.
+ */
+ public HttpRequestHandler lookup(final HttpRequest request) {
+ Args.notNull(request, "HTTP request");
+ return matcher.lookup(getRequestPath(request));
+ }
+
+}