1069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project/* 2069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/client/utils/URLEncodedUtils.java $ 3069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $Revision: 655107 $ 4069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $Date: 2008-05-10 08:20:42 -0700 (Sat, 10 May 2008) $ 5069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * ==================================================================== 6069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one 7069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * or more contributor license agreements. See the NOTICE file 8069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * distributed with this work for additional information 9069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * regarding copyright ownership. The ASF licenses this file 10069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * to you under the Apache License, Version 2.0 (the 11069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * "License"); you may not use this file except in compliance 12069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * with the License. You may obtain a copy of the License at 13069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 14069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 15069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 16069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Unless required by applicable law or agreed to in writing, 17069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * software distributed under the License is distributed on an 18069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 19069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * KIND, either express or implied. See the License for the 20069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * specific language governing permissions and limitations 21069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * under the License. 22069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * ==================================================================== 23069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 24069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * This software consists of voluntary contributions made by many 25069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * individuals on behalf of the Apache Software Foundation. For more 26069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * information on the Apache Software Foundation, please see 27069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <http://www.apache.org/>. 28069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 29069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 30069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 31069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectpackage org.apache.http.client.utils; 32069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 33069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.io.IOException; 34069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.io.UnsupportedEncodingException; 35069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.net.URI; 36069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.net.URLDecoder; 37069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.net.URLEncoder; 38069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.ArrayList; 39069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.Collections; 40069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.List; 41069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.Scanner; 42069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.Header; 43069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.HttpEntity; 44069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.NameValuePair; 45069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.message.BasicNameValuePair; 46069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.protocol.HTTP; 47069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.util.EntityUtils; 48069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 49069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project/** 50069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * A collection of utilities for encoding URLs. 51069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 52069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectpublic class URLEncodedUtils { 53069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 54069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static final String CONTENT_TYPE = "application/x-www-form-urlencoded"; 55069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private static final String PARAMETER_SEPARATOR = "&"; 56069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private static final String NAME_VALUE_SEPARATOR = "="; 57069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 58069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 59069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Returns a list of {@link NameValuePair NameValuePairs} as built from the 60069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * URI's query portion. For example, a URI of 61069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * http://example.org/path/to/file?a=1&b=2&c=3 would return a list of three 62069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * NameValuePairs, one for a=1, one for b=2, and one for c=3. 63069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <p> 64069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * This is typically useful while parsing an HTTP PUT. 65069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 66069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param uri 67069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * uri to parse 68069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param encoding 69069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * encoding to use while parsing the query 70069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 71069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static List <NameValuePair> parse (final URI uri, final String encoding) { 72069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project List <NameValuePair> result = Collections.emptyList(); 73069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String query = uri.getRawQuery(); 74069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (query != null && query.length() > 0) { 75069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project result = new ArrayList <NameValuePair>(); 76069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project parse(result, new Scanner(query), encoding); 77069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 78069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return result; 79069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 80069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 81069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 82069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Returns a list of {@link NameValuePair NameValuePairs} as parsed from an 83069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * {@link HttpEntity}. The encoding is taken from the entity's 84069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Content-Encoding header. 85069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <p> 86069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * This is typically used while parsing an HTTP POST. 87069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 88069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param entity 89069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * The entity to parse 90069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @throws IOException 91069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * If there was an exception getting the entity's data. 92069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 93069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static List <NameValuePair> parse ( 94069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final HttpEntity entity) throws IOException { 95069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project List <NameValuePair> result = Collections.emptyList(); 96069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (isEncoded(entity)) { 97069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String content = EntityUtils.toString(entity); 98069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final Header encoding = entity.getContentEncoding(); 99069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (content != null && content.length() > 0) { 100069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project result = new ArrayList <NameValuePair>(); 101069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project parse(result, new Scanner(content), 102069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project encoding != null ? encoding.getValue() : null); 103069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 104069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 105069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return result; 106069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 107069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 108069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 109069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Returns true if the entity's Content-Type header is 110069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <code>application/x-www-form-urlencoded</code>. 111069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 112069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static boolean isEncoded (final HttpEntity entity) { 113069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final Header contentType = entity.getContentType(); 114069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return (contentType != null && contentType.getValue().equalsIgnoreCase(CONTENT_TYPE)); 115069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 116069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 117069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 118069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Adds all parameters within the Scanner to the list of 119069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <code>parameters</code>, as encoded by <code>encoding</code>. For 120069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * example, a scanner containing the string <code>a=1&b=2&c=3</code> would 121069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * add the {@link NameValuePair NameValuePairs} a=1, b=2, and c=3 to the 122069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * list of parameters. 123069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 124069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param parameters 125069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * List to add parameters to. 126069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param scanner 127069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Input that contains the parameters to parse. 128069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param encoding 129069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Encoding to use when decoding the parameters. 130069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 131069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static void parse ( 132069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final List <NameValuePair> parameters, 133069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final Scanner scanner, 134069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String encoding) { 135069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project scanner.useDelimiter(PARAMETER_SEPARATOR); 136069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project while (scanner.hasNext()) { 137069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String[] nameValue = scanner.next().split(NAME_VALUE_SEPARATOR); 138069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (nameValue.length == 0 || nameValue.length > 2) 139069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IllegalArgumentException("bad parameter"); 140069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 141069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String name = decode(nameValue[0], encoding); 142069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String value = null; 143069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (nameValue.length == 2) 144069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project value = decode(nameValue[1], encoding); 145069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project parameters.add(new BasicNameValuePair(name, value)); 146069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 147069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 148069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 149069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 150069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Returns a String that is suitable for use as an <code>application/x-www-form-urlencoded</code> 151069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * list of parameters in an HTTP PUT or HTTP POST. 152069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 153069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param parameters The parameters to include. 154069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param encoding The encoding to use. 155069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 156069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static String format ( 157069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final List <? extends NameValuePair> parameters, 158069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String encoding) { 159069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final StringBuilder result = new StringBuilder(); 160069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project for (final NameValuePair parameter : parameters) { 161069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String encodedName = encode(parameter.getName(), encoding); 162069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String value = parameter.getValue(); 163069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String encodedValue = value != null ? encode(value, encoding) : ""; 164069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (result.length() > 0) 165069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project result.append(PARAMETER_SEPARATOR); 166069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project result.append(encodedName); 167069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project result.append(NAME_VALUE_SEPARATOR); 168069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project result.append(encodedValue); 169069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 170069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return result.toString(); 171069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 172069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 173069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private static String decode (final String content, final String encoding) { 174069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project try { 175069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return URLDecoder.decode(content, 176069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project encoding != null ? encoding : HTTP.DEFAULT_CONTENT_CHARSET); 177069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } catch (UnsupportedEncodingException problem) { 178069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IllegalArgumentException(problem); 179069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 180069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 181069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 182069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private static String encode (final String content, final String encoding) { 183069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project try { 184069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return URLEncoder.encode(content, 185069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project encoding != null ? encoding : HTTP.DEFAULT_CONTENT_CHARSET); 186069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } catch (UnsupportedEncodingException problem) { 187069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IllegalArgumentException(problem); 188069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 189069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 190069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 191069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project} 192