| /* |
| * 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.olingo.server.core.uri.parser; |
| |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.olingo.commons.core.Decoder; |
| import org.apache.olingo.server.api.uri.queryoption.QueryOption; |
| import org.apache.olingo.server.core.uri.queryoption.CustomQueryOptionImpl; |
| |
| public class UriDecoder { |
| |
| private static final String ACCEPT_FORM_ENCODING = "odata-accept-forms-encoding"; |
| private static boolean formEncoding = false; |
| |
| public static boolean isFormEncoding() { |
| return formEncoding; |
| } |
| |
| /** Splits the path string at '/' characters and percent-decodes the resulting path segments. */ |
| protected static List<String> splitAndDecodePath(final String path) throws UriParserSyntaxException { |
| List<String> pathSegmentsDecoded = new ArrayList<String>(); |
| for (final String segment : split(path, '/')) { |
| pathSegmentsDecoded.add(decode(segment)); |
| } |
| return pathSegmentsDecoded; |
| } |
| |
| /** |
| * Splits the query-option string at '&' characters, the resulting parts at '=' characters, |
| * and separately percent-decodes names and values of the resulting name-value pairs. |
| * If there is no '=' character in an option, the whole option is considered as name. |
| */ |
| protected static List<QueryOption> splitAndDecodeOptions(final String queryOptionString) |
| throws UriParserSyntaxException { |
| List<QueryOption> queryOptions = new ArrayList<QueryOption>(); |
| formEncoding = false; |
| for (final String option : split(queryOptionString, '&')) { |
| final int pos = option.indexOf('='); |
| final String name = pos >= 0 ? option.substring(0, pos) : option; |
| final String text = pos >= 0 ? option.substring(pos + 1) : ""; |
| //OLINGO-846 We trim the query option text to be more lenient to wrong uri constructors |
| if(ACCEPT_FORM_ENCODING.equals(name)){ |
| formEncoding = Boolean.parseBoolean(text); |
| } |
| queryOptions.add(new CustomQueryOptionImpl() |
| .setName(decode(name).trim()) |
| .setText(decode(text).trim())); |
| } |
| return queryOptions; |
| } |
| |
| /** |
| * Splits the input string at the given character. |
| * @param input string to split |
| * @param c character at which to split |
| * @return list of elements (can be empty) |
| */ |
| private static List<String> split(final String input, final char c) { |
| List<String> list = new LinkedList<String>(); |
| |
| int start = 0; |
| int end; |
| while ((end = input.indexOf(c, start)) >= 0) { |
| list.add(input.substring(start, end)); |
| start = end + 1; |
| } |
| |
| list.add(input.substring(start)); |
| |
| return list; |
| } |
| |
| public static String decode(final String encoded) throws UriParserSyntaxException { |
| try { |
| return Decoder.decode(encoded); |
| } catch (final IllegalArgumentException e) { |
| throw new UriParserSyntaxException("Wrong percent encoding!", e, UriParserSyntaxException.MessageKeys.SYNTAX); |
| } |
| } |
| } |