io.apicurio.datamodels.compat.RegexCompat Maven / Gradle / Ivy
/*
* Copyright 2019 Red Hat
*
* 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 io.apicurio.datamodels.compat;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Compatibility class used to bridge the gap between Java and JavaScript with respect to working with
* regular expressions.
* @author [email protected]
*/
public class RegexCompat {
/**
* Returns true if the given value matches the given regular expression.
* @param value
* @param regex
*/
public static boolean matches(String value, String regex) {
// TODO: compile every regular expression and cache the Pattern instance
return Pattern.matches(regex, value);
}
/**
* Finds all strings within the given input that match the given regular expression. Returns
* all matches, with each match represented as a list of the groups specified in the regex.
* @param value
* @param regex
*/
public static List findMatches(String value, String regex) {
List rval = new ArrayList<>();
// TODO: compile every regular expression and cache the Pattern instance
Pattern segMatchEx = Pattern.compile(regex);
Matcher match = segMatchEx.matcher(value);
while (match.find()) {
String[] mi = new String[match.groupCount() + 1];
for (int gidx = 0; gidx <= match.groupCount(); gidx++) {
mi[gidx] = match.group(gidx);
}
rval.add(mi);
}
return rval;
}
}