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/**
* Copyright 2013 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.common.net;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
/**
* Helper class to process URI's query, handled as properties.
* <p>
* The order of the URI segments (any properties) are <i>not</i> preserved.
* </p>
* <pre>
* URI: [scheme:][//authority][path][?query][#fragment]
* w/ authority: [user-info@]host[:port]
* Note: 'path' starts w/ fwd slash
* </pre>
*/
public class URIQueryProps {
private static final String QMARK = "?";
private static final char ASSIG = '=';
private static final String EMPTY = "";
private final String query_separator;
private final HashMap<String, String> properties = new HashMap<String, String>();
private URIQueryProps(final char querySeparator) {
query_separator = String.valueOf(querySeparator);
}
public final Map<String, String> getProperties() { return properties; }
public final char getQuerySeparator() { return query_separator.charAt(0); }
public final String appendQuery(String baseQuery) {
boolean needsSep = false;
final StringBuilder sb = new StringBuilder();
if ( null != baseQuery ) {
if( !baseQuery.startsWith(QMARK) ) {
baseQuery = baseQuery.substring(1);
}
sb.append(baseQuery);
if( !baseQuery.endsWith(query_separator) ) {
needsSep = true;
}
}
final Iterator<Entry<String, String>> entries = properties.entrySet().iterator();
while(entries.hasNext()) {
if(needsSep) {
sb.append(query_separator);
}
final Entry<String, String> entry = entries.next();
sb.append(entry.getKey());
if( EMPTY != entry.getValue() ) {
sb.append(ASSIG).append(entry.getValue());
}
needsSep = true;
}
return sb.toString();
}
public final URI appendQuery(final URI base) throws URISyntaxException {
return new URI(base.getScheme(),
base.getRawUserInfo(), base.getHost(), base.getPort(),
base.getRawPath(), appendQuery(base.getRawQuery()), base.getRawFragment());
}
/**
*
* @param uri
* @param querySeparator should be either <i>;</i> or <i>&</i>, <i>;</i> is encouraged due to troubles of escaping <i>&</i>.
* @return
* @throws IllegalArgumentException if <code>querySeparator</code> is illegal, i.e. neither <i>;</i> nor <i>&</i>
*/
public static final URIQueryProps create(final URI uri, final char querySeparator) throws IllegalArgumentException {
if( ';' != querySeparator && '&' != querySeparator ) {
throw new IllegalArgumentException("querySeparator is invalid: "+querySeparator);
}
final URIQueryProps data = new URIQueryProps(querySeparator);
final String q = uri.getQuery();
final int q_l = null != q ? q.length() : -1;
int q_e = -1;
while(q_e < q_l) {
final int q_b = q_e + 1; // next term
q_e = q.indexOf(querySeparator, q_b);
if(0 == q_e) {
// single separator
continue;
}
if(0 > q_e) {
// end
q_e = q_l;
}
// n-part
final String part = q.substring(q_b, q_e);
final int assignment = part.indexOf(ASSIG);
if(0 < assignment) {
// assignment
final String k = part.substring(0, assignment);
final String v = part.substring(assignment+1);
data.properties.put(k, v);
} else {
// property key only
data.properties.put(part, EMPTY);
}
}
return data;
}
}
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