com.github.ferstl.maven.pomenforcers.model.CollectionToStringHelper Maven / Gradle / Ivy

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The Pedantic POM Enforcers consist of serveral Maven enforcer rules that help you keep your project setup consistent and organized.

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/*
 * Copyright (c) 2013 by Stefan Ferstl 
 *
 * 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.github.ferstl.maven.pomenforcers.model;

import com.google.common.base.Joiner;
import com.google.common.collect.Iterables;

final class CollectionToStringHelper {

  private static final Joiner JOINER = Joiner.on(",\n");

  public static String toString(String prefix, Iterable iterable) {
    StringBuilder sb = new StringBuilder(prefix).append(" [\n");
    JOINER.appendTo(sb, iterable).append((iterable != null && !Iterables.isEmpty(iterable)) ? "\n]" : "]");
    return sb.toString();
  }

  private CollectionToStringHelper() {}
}