protected void doExecute()

in src/main/java/org/apache/maven/plugins/dependency/resolvers/ResolvePluginsMojo.java [104:180]
66 lines of code
13 McCabe index (conditional complexity)

    protected void doExecute() throws MojoExecutionException {
        try {
            // ideally this should either be DependencyCoordinates or DependencyNode
            final Set<Artifact> plugins = resolvePluginArtifacts();

            StringBuilder sb = new StringBuilder();
            sb.append(System.lineSeparator());
            sb.append("The following plugins have been resolved:");
            sb.append(System.lineSeparator());
            if (plugins.isEmpty()) {
                sb.append("   none");
                sb.append(System.lineSeparator());
            } else {
                for (Artifact plugin : plugins) {
                    String artifactFilename = null;
                    if (outputAbsoluteArtifactFilename) {
                        try {
                            // we want to print the absolute file name here
                            artifactFilename =
                                    plugin.getFile().getAbsoluteFile().getPath();
                        } catch (NullPointerException e) {
                            // ignore the null pointer, we'll output a null string
                            artifactFilename = null;
                        }
                    }

                    String id = plugin.toString();
                    sb.append("   ")
                            .append(id)
                            .append(outputAbsoluteArtifactFilename ? ":" + artifactFilename : "")
                            .append(System.lineSeparator());

                    if (!excludeTransitive) {
                        DefaultDependableCoordinate pluginCoordinate = new DefaultDependableCoordinate();
                        pluginCoordinate.setGroupId(plugin.getGroupId());
                        pluginCoordinate.setArtifactId(plugin.getArtifactId());
                        pluginCoordinate.setVersion(plugin.getVersion());

                        for (final Artifact artifact : resolveArtifactDependencies(pluginCoordinate)) {
                            artifactFilename = null;
                            if (outputAbsoluteArtifactFilename) {
                                try {
                                    // we want to print the absolute file name here
                                    artifactFilename =
                                            artifact.getFile().getAbsoluteFile().getPath();
                                } catch (NullPointerException e) {
                                    // ignore the null pointer, we'll output a null string
                                    artifactFilename = null;
                                }
                            }

                            id = artifact.toString();
                            sb.append("      ")
                                    .append(id)
                                    .append(outputAbsoluteArtifactFilename ? ":" + artifactFilename : "")
                                    .append(System.lineSeparator());
                        }
                    }
                }
                sb.append(System.lineSeparator());

                String output = sb.toString();
                if (outputFile == null) {
                    DependencyUtil.log(output, getLog());
                } else {
                    String encoding = Objects.toString(outputEncoding, "UTF-8");
                    DependencyUtil.write(output, outputFile, appendOutput, encoding);
                }
            }
        } catch (IOException
                | ArtifactFilterException
                | ArtifactResolverException
                | DependencyResolverException
                | ArtifactResolutionException e) {
            throw new MojoExecutionException(e.getMessage(), e);
        }
    }