001// *************************************************************************************************************************** 002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * 003// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * 004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance * 005// * with the License. You may obtain a copy of the License at * 006// * * 007// * http://www.apache.org/licenses/LICENSE-2.0 * 008// * * 009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an * 010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * 011// * specific language governing permissions and limitations under the License. * 012// *************************************************************************************************************************** 013package org.apache.juneau.http; 014 015import static org.apache.juneau.internal.CollectionUtils.*; 016 017import java.util.*; 018 019import org.apache.juneau.internal.*; 020 021/** 022 * Category of headers that consist of simple comma-delimited lists of strings with q-values. 023 * 024 * <p> 025 * <h5 class='figure'>Example</h5> 026 * <p class='bcode w800'> 027 * Accept-Encoding: compress;q=0.5, gzip;q=1.0 028 * </p> 029 * 030 * <ul class='seealso'> 031 * <li class='extlink'>{@doc RFC2616} 032 * </ul> 033 */ 034public class HeaderRangeArray { 035 036 final StringRange[] typeRanges; 037 private final List<StringRange> typeRangesList; 038 039 /** 040 * Constructor. 041 * 042 * @param value The raw header value. 043 */ 044 protected HeaderRangeArray(String value) { 045 this.typeRanges = StringRange.parse(value); 046 this.typeRangesList = immutableList(typeRanges); 047 } 048 049 /** 050 * Given a list of type values, returns the best match for this header. 051 * 052 * @param types The types to match against. 053 * @return The index into the array of the best match, or <c>-1</c> if no suitable matches could be found. 054 */ 055 public int findMatch(String[] types) { 056 057 // Type ranges are ordered by 'q'. 058 // So we only need to search until we've found a match. 059 for (StringRange mr : typeRanges) 060 for (int i = 0; i < types.length; i++) 061 if (mr.matches(types[i])) 062 return i; 063 064 return -1; 065 } 066 067 /** 068 * Returns the list of the types ranges that make up this header. 069 * 070 * <p> 071 * The types ranges in the list are sorted by their q-value in descending order. 072 * 073 * @return An unmodifiable list of type ranges. 074 */ 075 public List<StringRange> asSimpleRanges() { 076 return typeRangesList; 077 } 078 079 @Override /* Object */ 080 public String toString() { 081 return StringUtils.join(typeRanges, ','); 082 } 083}