/* Copyright (c) 2008, 2009 Netflix, Matthias Kaeppler
*
* Licensed 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 edu.minggo.tencent.weibo;
import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
/**
* A multi-map of HTTP request parameters. Each key references a
* {@link SortedSet} of parameters collected from the request during message
* signing. Parameter values are sorted as per {@linkplain http
* ://oauth.net/core/1.0a/#anchor13}. Every key/value pair will be
* percent-encoded upon insertion. This class has special semantics tailored to
* being useful for message signing; it's not a general purpose collection class
* to handle request parameters.
*
* @author Matthias Kaeppler
*/
@SuppressWarnings("serial")
public class HttpParameters implements Map<String, SortedSet<String>>, Serializable {
private TreeMap<String, SortedSet<String>> wrappedMap = new TreeMap<String, SortedSet<String>>();
public SortedSet<String> put(String key, SortedSet<String> value) {
return wrappedMap.put(key, value);
}
public SortedSet<String> put(String key, SortedSet<String> values, boolean percentEncode) {
if (percentEncode) {
remove(key);
for (String v : values) {
put(key, v, true);
}
return get(key);
} else {
return wrappedMap.put(key, values);
}
}
/**
* Convenience method to add a single value for the parameter specified by
* 'key'.
*
* @param key
* the parameter name
* @param value
* the parameter value
* @return the value
*/
public String put(String key, String value) {
return put(key, value, false);
}
/**
* Convenience method to add a single value for the parameter specified by
* 'key'.
*
* @param key
* the parameter name
* @param value
* the parameter value
* @param percentEncode
* whether key and value should be percent encoded before being
* inserted into the map
* @return the value
*/
public String put(String key, String value, boolean percentEncode) {
SortedSet<String> values = wrappedMap.get(key);
if (values == null) {
values = new TreeSet<String>();
wrappedMap.put(percentEncode ? OAuth.percentEncode(key) : key, values);
}
if (value != null) {
value = percentEncode ? OAuth.percentEncode(value) : value;
values.add(value);
}
return value;
}
/**
* Convenience method to allow for storing null values. {@link #put} doesn't
* allow null values, because that would be ambiguous.
*
* @param key
* the parameter name
* @param nullString
* can be anything, but probably... null?
* @return null
*/
public String putNull(String key, String nullString) {
return put(key, nullString);
}
public void putAll(Map<? extends String, ? extends SortedSet<String>> m) {
wrappedMap.putAll(m);
}
public void putAll(Map<? extends String, ? extends SortedSet<String>> m, boolean percentEncode) {
if (percentEncode) {
for (String key : m.keySet()) {
put(key, m.get(key), true);
}
} else {
wrappedMap.putAll(m);
}
}
public void putAll(String[] keyValuePairs, boolean percentEncode) {
for (int i = 0; i < keyValuePairs.length - 1; i += 2) {
this.put(keyValuePairs[i], keyValuePairs[i + 1], percentEncode);
}
}
/**
* Convenience method to merge a Map<String, List<String>>.
*
* @param m
* the map
*/
public void putMap(Map<String, List<String>> m) {
for (String key : m.keySet()) {
SortedSet<String> vals = get(key);
if (vals == null) {
vals = new TreeSet<String>();
put(key, vals);
}
vals.addAll(m.get(key));
}
}
public SortedSet<String> get(Object key) {
return wrappedMap.get(key);
}
/**
* Convenience method for {@link #getFirst(key, false)}.
*
* @param key
* the parameter name (must be percent encoded if it contains unsafe
* characters!)
* @return the first value found for this parameter
*/
public String getFirst(Object key) {
return getFirst(key, false);
}
/**
* Returns the first value from the set of all values for the given
* parameter name. If the key passed to this method contains special
* characters, you MUST first percent encode it using
* {@link OAuth#percentEncode(String)}, otherwise the lookup will fail
* (that's because upon storing values in this map, keys get
* percent-encoded).
*
* @param key
* the parameter name (must be percent encoded if it contains unsafe
* characters!)
* @param percentDecode
* whether the value being retrieved should be percent decoded
* @return the first value found for this parameter
*/
public String getFirst(Object key, boolean percentDecode) {
SortedSet<String> values = wrappedMap.get(key);
if (values == null || values.isEmpty()) {
return null;
}
String value = values.first();
return percentDecode ? OAuth.percentDecode(value) : value;
}
/**
* Concatenates all values for the given key to a list of key/value pairs
* suitable for use in a URL query string.
*
* @param key
* the parameter name
* @return the query string
*/
public String getAsQueryString(Object key) {
StringBuilder sb = new StringBuilder();
key = OAuth.percentEncode((String) key);
Set<String> values = wrappedMap.get(key);
if (values == null) {
return key + "=";
}
Iterator<String> iter = values.iterator();
while (iter.hasNext()) {
sb.append(key + "=" + iter.next());
if (iter.hasNext()) {
sb.append("&");
}
}
return sb.toString();
}
public String getAsHeaderElement(String key) {
String value = getFirst(key);
if (value == null) {
return null;
}
return key + "=\"" + value + "\"";
}
public boolean containsKey(Object key) {
return wrappedMap.containsKey(key);
}
public boolean containsValue(Object value) {
for (Set<String> values : wrappedMap.values()) {
if (values.contains(value)) {
return true;
}
}
return false;
}
public int size() {
int count = 0;
for (String key : wrappedMap.keySet()) {
count += wrappedMap.get(key).size();
}
return count;
}
public boolean isEmpty() {
return wrappedMap.isEmpty();
}
public void clear() {
wrappedMap.clear();
}
public SortedSet<String> remove(Object key) {
return wrappedMap.remove(key);
}
public Set<String> keySet() {
return wrappedMap.keySet();
}
public Collection<SortedSet<String>> values() {
return wrappedMap.values();
}
public Set<java.util.Map.Entry<String, SortedSet<String>>> entrySet() {
return wrappedMap.entrySet();
}
}