org.openapitools.codegen.templating.mustache.KebabCaseLambda Maven / Gradle / Ivy
/*
* Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
*
* 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
*
* https://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.openapitools.codegen.templating.mustache;
import com.samskivert.mustache.Mustache;
import com.samskivert.mustache.Template;
import java.io.IOException;
import java.io.Writer;
import java.util.Locale;
import static org.openapitools.codegen.utils.StringUtils.underscore;
/**
* Converts text in a fragment to snake case.
*
* Register:
*
* additionalProperties.put("kebabcase", new KebabCaseLambda());
*
*
* Use:
*
* {{#kebabcase}}{{summary}}{{/kebabcase}}
*
*/
public class KebabCaseLambda implements Mustache.Lambda {
@Override
public void execute(Template.Fragment fragment, Writer writer) throws IOException {
String text = fragment.execute();
String SPECIAL = "[^A-Za-z0-9_]";
String firstPattern = "([A-Z]+)([A-Z][a-z])";
String secondPattern = "([a-z\\d])([A-Z])";
String replacementPattern = "$1 $2";
// Replace package separator with slash.
text = text.replaceAll("\\.", "/");
text = text.replaceAll(SPECIAL, "");
// Replace capital letter with _ plus lowercase letter.
text = text.replaceAll(firstPattern, replacementPattern);
text = text.replaceAll(secondPattern, replacementPattern);
text = text.replace('_', '-');
text = text.replace(' ', '-');
text = text.toLowerCase(Locale.ROOT);
writer.write(text);
}
}