/*******************************************************************************
* Copyright 2014 Ivan Shubin http://mindengine.net
*
* 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 net.mindengine.galen.specs.reader;
import java.io.IOException;
import java.util.regex.Pattern;
import net.mindengine.galen.parser.ExpectWord;
import net.mindengine.galen.parser.SyntaxException;
import net.mindengine.galen.specs.Spec;
public class SpecObjectAndErrorRateProcessor implements SpecProcessor {
private static final Pattern CENTERED_ERROR_RATE_PATTERN = Pattern.compile("[0-9]+px");
private SpecObjectAndErrorRateInit init;
public SpecObjectAndErrorRateProcessor(SpecObjectAndErrorRateInit init) {
this.init = init;
}
@Override
public Spec processSpec(String specName, String paramsText, String contextPath) throws IOException {
StringCharReader reader = new StringCharReader(paramsText);
String objectName = new ExpectWord().read(reader);
if (objectName.isEmpty()) {
throw new SyntaxException("Missing object name");
}
Integer errorRate = null;
if (reader.hasMore()) {
String theRest = reader.getTheRest();
String errorRateText = theRest.replaceAll("\\s", "");
if (CENTERED_ERROR_RATE_PATTERN.matcher(errorRateText).matches()) {
errorRate = Integer.parseInt(errorRateText.replace("px", ""));
}
else throw new SyntaxException("Incorrect error rate syntax: \"" + theRest + "\"");
}
return init.init(specName, objectName, errorRate);
}
}