--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.httpserver/share/classes/com/sun/net/httpserver/Headers.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.net.httpserver;
+
+import java.util.*;
+
+/**
+ * HTTP request and response headers are represented by this class which implements
+ * the interface
+ * {@link java.util.Map}{@literal <}{@link java.lang.String}, {@link java.util.List}
+ * {@literal <}{@link java.lang.String}{@literal >>}.
+ * The keys are case-insensitive Strings representing the header names and
+ * the value associated with each key is
+ * a {@link List}{@literal <}{@link String}{@literal >} with one
+ * element for each occurrence of the header name in the request or response.
+ * <p>
+ * For example, if a response header instance contains
+ * one key "HeaderName" with two values "value1 and value2"
+ * then this object is output as two header lines:
+ * <blockquote><pre>
+ * HeaderName: value1
+ * HeaderName: value2
+ * </pre></blockquote>
+ * <p>
+ * All the normal {@link java.util.Map} methods are provided, but the following
+ * additional convenience methods are most likely to be used:
+ * <ul>
+ * <li>{@link #getFirst(String)} returns a single valued header or the first value of
+ * a multi-valued header.</li>
+ * <li>{@link #add(String,String)} adds the given header value to the list for the given key</li>
+ * <li>{@link #set(String,String)} sets the given header field to the single value given
+ * overwriting any existing values in the value list.
+ * </ul><p>
+ * All methods in this class accept <code>null</code> values for keys and values. However, null
+ * keys will never will be present in HTTP request headers, and will not be output/sent in response headers.
+ * Null values can be represented as either a null entry for the key (i.e. the list is null) or
+ * where the key has a list, but one (or more) of the list's values is null. Null values are output
+ * as a header line containing the key but no associated value.
+ * @since 1.6
+ */
+public class Headers implements Map<String,List<String>> {
+
+ HashMap<String,List<String>> map;
+
+ public Headers () {map = new HashMap<String,List<String>>(32);}
+
+ /* Normalize the key by converting to following form.
+ * First char upper case, rest lower case.
+ * key is presumed to be ASCII
+ */
+ private String normalize (String key) {
+ if (key == null) {
+ return null;
+ }
+ int len = key.length();
+ if (len == 0) {
+ return key;
+ }
+ char[] b = key.toCharArray();
+ if (b[0] >= 'a' && b[0] <= 'z') {
+ b[0] = (char)(b[0] - ('a' - 'A'));
+ }
+ for (int i=1; i<len; i++) {
+ if (b[i] >= 'A' && b[i] <= 'Z') {
+ b[i] = (char) (b[i] + ('a' - 'A'));
+ }
+ }
+ return new String(b);
+ }
+
+ public int size() {return map.size();}
+
+ public boolean isEmpty() {return map.isEmpty();}
+
+ public boolean containsKey(Object key) {
+ if (key == null) {
+ return false;
+ }
+ if (!(key instanceof String)) {
+ return false;
+ }
+ return map.containsKey (normalize((String)key));
+ }
+
+ public boolean containsValue(Object value) {
+ return map.containsValue(value);
+ }
+
+ public List<String> get(Object key) {
+ return map.get(normalize((String)key));
+ }
+
+ /**
+ * returns the first value from the List of String values
+ * for the given key (if at least one exists).
+ * @param key the key to search for
+ * @return the first string value associated with the key
+ */
+ public String getFirst (String key) {
+ List<String> l = map.get(normalize(key));
+ if (l == null) {
+ return null;
+ }
+ return l.get(0);
+ }
+
+ public List<String> put(String key, List<String> value) {
+ return map.put (normalize(key), value);
+ }
+
+ /**
+ * adds the given value to the list of headers
+ * for the given key. If the mapping does not
+ * already exist, then it is created
+ * @param key the header name
+ * @param value the header value to add to the header
+ */
+ public void add (String key, String value) {
+ String k = normalize(key);
+ List<String> l = map.get(k);
+ if (l == null) {
+ l = new LinkedList<String>();
+ map.put(k,l);
+ }
+ l.add (value);
+ }
+
+ /**
+ * sets the given value as the sole header value
+ * for the given key. If the mapping does not
+ * already exist, then it is created
+ * @param key the header name
+ * @param value the header value to set.
+ */
+ public void set (String key, String value) {
+ LinkedList<String> l = new LinkedList<String>();
+ l.add (value);
+ put (key, l);
+ }
+
+
+ public List<String> remove(Object key) {
+ return map.remove(normalize((String)key));
+ }
+
+ public void putAll(Map<? extends String,? extends List<String>> t) {
+ map.putAll (t);
+ }
+
+ public void clear() {map.clear();}
+
+ public Set<String> keySet() {return map.keySet();}
+
+ public Collection<List<String>> values() {return map.values();}
+
+ public Set<Map.Entry<String, List<String>>> entrySet() {
+ return map.entrySet();
+ }
+
+ public boolean equals(Object o) {return map.equals(o);}
+
+ public int hashCode() {return map.hashCode();}
+ }