org.apache.cxf.transport.http.PatternBuilder Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.transport.http;
import java.util.regex.Pattern;
/**
* Convert a "nonProxyHosts" formatted String into a usable regular expression usable in {@code Pattern}.
*/
public final class PatternBuilder {
/**
* Default empty constructor fot utility class.
*/
private PatternBuilder() { }
/**
* Builds a {@code Pattern} from the given String argument.
* @param value pattern like expression
* @return a usable {@code Pattern}.
*/
public static Pattern build(final String value) {
// Here is a usual nonProxyHosts value:
// localhost|www.google.*|*.apache.org
// '|' are separator for 'or' group
// '.' are real dots
// '*' means any char (length >= 0)
// So we need to convert that value a little bit to make it a real regular expression suited for Java
String regexp = value.replace(".", "\\.");
regexp = regexp.replace("*", ".*");
return Pattern.compile(regexp);
}
}