com.izforge.izpack.util.RegularExpressionValidator Maven / Gradle / Ivy
/*
* IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
*
* http://izpack.org/
* http://izpack.codehaus.org/
*
* 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 com.izforge.izpack.util;
import com.izforge.izpack.panels.PasswordGroup;
import com.izforge.izpack.panels.ProcessingClient;
import com.izforge.izpack.panels.Validator;
import java.util.Map;
import java.util.regex.Pattern;
/**
* A validator to enforce non-empty fields.
*
* This validator can be used for rule input fields in the UserInputPanel to make sure that the
* user's entry matches a specified regular expression.
*
* @author Mike Cunneen
*/
public class RegularExpressionValidator implements Validator
{
public static final String STR_PATTERN_DEFAULT = "[a-zA-Z0-9._-]{3,}@[a-zA-Z0-9._-]+([.][a-zA-Z0-9_-]+)*[.][a-zA-Z0-9._-]{2,4}";
private static final String PATTERN_PARAM = "pattern";
public boolean validate(ProcessingClient client)
{
String patternString;
if (client.hasParams())
{
Map paramMap = client.getValidatorParams();
patternString = paramMap.get(PATTERN_PARAM);
}
else
{
patternString = STR_PATTERN_DEFAULT;
}
Pattern pattern = Pattern.compile(patternString);
return pattern.matcher(getString(client)).matches();
}
private String getString(ProcessingClient client)
{
String returnValue = "";
if (client instanceof PasswordGroup)
{
int numFields = client.getNumFields();
if (numFields > 0)
{
returnValue = client.getFieldContents(0);
}
else
{
// Should never get here, but might as well try and grab some text
returnValue = client.getText();
}
}
else
{
// Original way to retrieve text for validation
returnValue = client.getText();
}
return returnValue;
}
}