1package eu.siacs.conversations.ui.util;
 2
 3import java.util.HashMap;
 4
 5/**
 6 * Helper methods for parsing URI's.
 7 */
 8public final class UriHelper {
 9	/**
10	 * Parses a query string into a hashmap.
11	 *
12	 * @param q The query string to split.
13	 * @return A hashmap containing the key-value pairs from the query string.
14	 */
15	public static HashMap<String, String> parseQueryString(final String q) {
16		if (q == null || q.isEmpty()) {
17			return null;
18		}
19
20		final String[] query = q.split("&");
21		// TODO: Look up the HashMap implementation and figure out what the load factor is and make sure we're not reallocating here.
22		final HashMap<String, String> queryMap = new HashMap<>(query.length);
23		for (final String param : query) {
24			final String[] pair = param.split("=");
25			queryMap.put(pair[0], pair.length == 2 && !pair[1].isEmpty() ? pair[1] : null);
26		}
27
28		return queryMap;
29	}
30}