SearchQueryUtils.java
/*
* Copyright 2021 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* 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 org.keycloak.utils;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* @author Vaclav Muzikar <vmuzikar@redhat.com>
*/
public class SearchQueryUtils {
public static final Pattern queryPattern = Pattern.compile("\\s*(?:(?<name>[^\"][^: ]+)|\"(?<nameEsc>(?:\\\\.|[^\\\\\"])+)\"):(?:(?<value>[^\"][^ ]*)|\"(?<valueEsc>(?:\\\\.|[^\\\\\"])+)\")\\s*");
public static final Pattern escapedCharsPattern = Pattern.compile("\\\\(.)");
public static Map<String, String> getFields(final String query) {
Matcher matcher = queryPattern.matcher(query);
Map<String, String> ret = new HashMap<>();
while (matcher.find()) {
String name = matcher.group("name");
if (name == null) {
name = unescape(matcher.group("nameEsc"));
}
String value = matcher.group("value");
if (value == null) {
value = unescape(matcher.group("valueEsc"));
}
ret.put(name, value);
}
return ret;
}
public static String unescape(final String escaped) {
return escapedCharsPattern.matcher(escaped).replaceAll("$1");
}
}