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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.model.tosca.validators;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.openecomp.sdc.be.model.DataTypeDefinition;
public class IntegerValidator implements PropertyTypeValidator {
private static IntegerValidator integerValidator = new IntegerValidator();
private IntegerValidator() {
}
public static IntegerValidator getInstance() {
return integerValidator;
}
private class PatternBase {
public PatternBase(Pattern pattern, Integer base) {
this.pattern = pattern;
this.base = base;
}
Pattern pattern;
Integer base;
}
private PatternBase base8Pattern = new PatternBase(Pattern.compile("([-+])?0o([0-7]+)"), 8);
private PatternBase base10Pattern = new PatternBase(Pattern.compile("([-+])?(0|[1-9][0-9]*)"), 10);
private PatternBase base16Pattern = new PatternBase(Pattern.compile("([-+])?0x([0-9a-fA-F]+)"), 16);
private PatternBase[] patterns = { base10Pattern, base8Pattern, base16Pattern };
@Override
public boolean isValid(String value, String innerType, Map<String, DataTypeDefinition> allDataTypes) {
if (value == null || true == value.isEmpty()) {
return true;
}
for (PatternBase patternBase : patterns) {
Matcher matcher = patternBase.pattern.matcher(value);
Long parsed = null;
if (matcher.matches()) {
try {
parsed = Long.parseLong(matcher.group(2), patternBase.base);
if (matcher.group(1) != null && matcher.group(1).compareTo("-") == 0) {
parsed *= -1;
}
return (Integer.MIN_VALUE <= parsed && parsed <= (Integer.MAX_VALUE)) ? true : false;
} catch (NumberFormatException e) {
return false;
}
}
}
return false;
}
@Override
public boolean isValid(String value, String innerType) {
return isValid(value, innerType, null);
}
}
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