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/*
* Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.traccar.helper;
import java.util.regex.Pattern;
public class PatternBuilder {
private final StringBuilder pattern = new StringBuilder();
private final boolean collapse = true;
public PatternBuilder xpr(String s) {
pattern.append(s);
return this;
}
public PatternBuilder opx(String s) {
return xpr("(?:").xpr(s).xpr(")?");
}
public PatternBuilder txt(String s) {
pattern.append(s.replaceAll("([\\\\\\.\\[\\{\\(\\*\\+\\?\\^\\$\\|])", "\\\\$1"));
return this;
}
public PatternBuilder num(String s) {
if (collapse) {
s = s.replace("dddd", "d{4}").replace("ddd", "d{3}").replace("dd", "d{2}");
s = s.replace("xxxx", "x{4}").replace("xxx", "x{3}").replace("xx", "x{2}");
}
pattern.append(s.replace("d", "\\d").replace("x", "\\p{XDigit}").replaceAll("([\\.\\|])", "\\\\$1"));
return this;
}
public PatternBuilder opn(String s) {
return xpr("(?:").num(s).xpr(")?");
}
public PatternBuilder any() {
pattern.append(".*");
return this;
}
public PatternBuilder not(String s) {
return xpr("[^").txt(s).xpr("]*");
}
public PatternBuilder nxt(String s) {
return not(s).txt(s);
}
public Pattern compile() {
return Pattern.compile(pattern.toString(), Pattern.DOTALL);
}
@Override
public String toString() {
return pattern.toString();
}
}
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