org.openapitools.codegen.templating.mustache.UniqueLambda 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.Arrays;
import java.util.List;
import java.util.stream.Collectors;
/**
* Split text by the delimiter and then write only the unique entries
*
* Register:
*
* additionalProperties.put("unique", new UniqueLambda());
*
*
* Use:
*
* {{#unique}}{{name}}{{/unique}}
*
*/
public class UniqueLambda implements Mustache.Lambda {
private final String delimiter;
private final boolean withNewLine;
public UniqueLambda(String delimiter, boolean withNewLine)
{
this.delimiter = delimiter;
this.withNewLine = withNewLine;
}
@Override
public void execute(Template.Fragment fragment, Writer writer) throws IOException {
String[] parts = fragment.execute().split(this.delimiter, -1);
List uniqueLines = Arrays.stream(parts).distinct().collect(Collectors.toList());
writer.write(String.join(delimiter, uniqueLines));
if (withNewLine) {
writer.write("\n");
}
}
}