com.github.ferstl.depgraph.dependency.dot.style.StyleKey Maven / Gradle / Ivy

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This Maven plugin generates dependency graphs on single modules or in an aggregated form on multimodule projects. The graphs are represented by .dot files. In case that Graphviz is installed on the machine where this plugin is run, the .dot file can be directly converted into all supported image files.

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/*
 * Copyright (c) 2014 - 2017 the original author or authors.
 *
 * 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.depgraph.dependency.dot.style;

import java.util.Objects;
import org.apache.commons.lang3.StringUtils;
import com.google.common.base.Joiner;

import static org.apache.commons.lang3.StringUtils.defaultIfEmpty;
import static org.apache.commons.lang3.StringUtils.startsWith;

public final class StyleKey {

  private static final int NUM_ELEMENTS = 5;

  private final String groupId;
  private final String artifactId;
  private final String scope;
  private final String type;
  private final String version;


  private StyleKey(String[] parts) {
    if (parts.length > NUM_ELEMENTS) {
      throw new IllegalArgumentException("Too many parts. Expecting '::::'");
    }

    String[] expanded = new String[NUM_ELEMENTS];
    for (int i = 0; i < expanded.length; i++) {
      expanded[i] = "";
    }

    for (int i = 0; i < parts.length; i++) {
      expanded[i] = defaultIfEmpty(parts[i], "");
    }

    this.groupId = expanded[0];
    this.artifactId = expanded[1];
    this.scope = expanded[2];
    this.type = expanded[3];
    this.version = expanded[4];
  }

  public static StyleKey fromString(String keyString) {
    String[] parts = keyString.split(",");
    return new StyleKey(parts);
  }

  public static StyleKey create(String groupId, String artifactId, String scope, String type, String version) {
    return new StyleKey(new String[]{groupId, artifactId, scope, type, version});
  }

  public boolean matches(StyleKey other) {
    return (wildcardMatch(this.groupId, other.groupId))
        && (wildcardMatch(this.artifactId, other.artifactId))
        && (match(this.scope, other.scope))
        && (match(this.type, other.type))
        && (wildcardMatch(this.version, other.version));

  }

  @Override
  public boolean equals(Object obj) {
    if (obj == this) {
      return true;
    }

    if (!(obj instanceof StyleKey)) {
      return false;
    }

    StyleKey other = (StyleKey) obj;

    return Objects.equals(this.groupId, other.groupId)
        && Objects.equals(this.artifactId, other.artifactId)
        && Objects.equals(this.scope, other.scope)
        && Objects.equals(this.type, other.type)
        && Objects.equals(this.version, other.version);
  }

  @Override
  public int hashCode() {
    return Objects.hash(this.groupId, this.artifactId, this.scope, this.type, this.version);
  }

  @Override
  public String toString() {
    return Joiner.on(",").join(this.groupId, this.artifactId, this.scope, this.type, this.version);
  }

  private static boolean wildcardMatch(String value1, String value2) {
    if (StringUtils.endsWith(value1, "*")) {
      return startsWith(value2, value1.substring(0, value1.length() - 1));
    }

    return match(value1, value2);
  }

  private static boolean match(String value1, String value2) {
    return value1.isEmpty() || value1.equals(value2);
  }

}