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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.jdk.core.util;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.TreeMap;
/**
* @author Roberto E. Escobar
*/
public class UrlQuery {
private static final String URL_ENCODING = "UTF-8";
private final Map<String, List<String>> parameters;
public UrlQuery() {
this.parameters = new TreeMap<>();
}
public UrlQuery clear() {
parameters.clear();
return this;
}
public boolean containsKey(String key) {
return parameters.containsKey(key);
}
public UrlQuery put(String name, String... values) {
put(name, false, values);
return this;
}
public UrlQuery put(String name, Object... values) {
put(name, false, values);
return this;
}
public UrlQuery putInPlace(String name, String... values) {
put(name, true, values);
return this;
}
public UrlQuery putInPlace(String name, Object... values) {
put(name, true, values);
return this;
}
private UrlQuery put(String name, boolean overrite, String... values) {
for (String value : values) {
if (Strings.isValid(value)) {
innerPut(name, value, overrite);
}
}
return this;
}
private UrlQuery put(String name, boolean overrite, Object... values) {
for (Object value : values) {
if (value != null) {
innerPut(name, String.valueOf(value), overrite);
}
}
return this;
}
private void innerPut(String name, String value, boolean overrite) {
List<String> list = parameters.get(name);
if (list == null) {
list = new ArrayList<>();
parameters.put(name, list);
}
if (overrite) {
list.clear();
}
list.add(value);
}
private void innerPut(String name, String value) {
innerPut(name, value, false);
}
public UrlQuery parse(URL url) throws UnsupportedEncodingException {
if (url != null) {
parse(url.getQuery());
}
return this;
}
public UrlQuery parse(String qs) throws UnsupportedEncodingException {
clear();
if (Strings.isValid(qs)) {
String toParse = qs;
int pos = toParse.lastIndexOf('/');
if (pos > -1) {
toParse = toParse.substring(pos + 1);
}
pos = toParse.lastIndexOf('?');
if (pos > -1) {
toParse = toParse.substring(pos + 1);
}
String pairs[] = toParse.split("&");
for (String pair : pairs) {
String name;
String value;
pos = pair.indexOf('=');
if (pos == -1) {
name = pair;
value = null;
} else {
name = decode(pair.substring(0, pos));
value = decode(pair.substring(pos + 1, pair.length()));
}
innerPut(name, value);
}
}
return this;
}
public String getParameter(String name) {
List<String> values = parameters.get(name);
String toReturn;
if (values == null) {
toReturn = null;
} else if (values.isEmpty()) {
toReturn = "";
} else {
toReturn = values.iterator().next();
}
return toReturn;
}
public String[] getParameterValues(String name) {
List<String> values = parameters.get(name);
return values != null ? values.toArray(new String[values.size()]) : null;
}
public Enumeration<String> getParameterNames() {
return java.util.Collections.enumeration(parameters.keySet());
}
public Map<String, String[]> getParameterMap() {
Map<String, String[]> map = new TreeMap<>();
for (Map.Entry<String, List<String>> entry : parameters.entrySet()) {
List<String> list = entry.getValue();
String[] values = list != null ? list.toArray(new String[list.size()]) : null;
map.put(entry.getKey(), values);
}
return map;
}
public String toUrl() throws UnsupportedEncodingException {
StringBuilder builder = new StringBuilder();
boolean isFirst = true;
for (Entry<String, List<String>> entry : parameters.entrySet()) {
String key = entry.getKey();
Collection<String> values = entry.getValue();
if (values != null && !values.isEmpty()) {
for (String value : values) {
if (!isFirst) {
builder.append('&');
}
builder.append(encode(key));
builder.append('=');
builder.append(encode(value));
isFirst = false;
}
}
}
return builder.toString();
}
@Override
public String toString() {
try {
return toUrl();
} catch (UnsupportedEncodingException ex) {
return Lib.exceptionToString(ex);
}
}
private static String decode(String value) throws UnsupportedEncodingException {
return URLDecoder.decode(value, URL_ENCODING);
}
private static String encode(String value) throws UnsupportedEncodingException {
return URLEncoder.encode(value, URL_ENCODING);
}
}
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