Add list mojo

maven-plugin/src/main/java/eu/maveniverse/maven/toolbox/plugin/gav/GavListMojo.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2023-2024 Maveniverse Org.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v20.html
+ */
+package eu.maveniverse.maven.toolbox.plugin.gav;
+
+import eu.maveniverse.maven.toolbox.shared.ToolboxCommando;
+import java.io.IOException;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+
+@Mojo(name = "gav-list", requiresProject = false, threadSafe = true)
+public class GavListMojo extends GavSearchMojoSupport {
+    /**
+     * The "gavoid" part to list.
+     */
+    @Parameter(property = "gavoid", required = true)
+    private String gavoid;
+
+    @Override
+    protected void doExecute(ToolboxCommando toolboxCommando) throws MojoExecutionException {
+        try {
+            toolboxCommando.list(getRemoteRepository(toolboxCommando), gavoid, output);
+        } catch (IOException e) {
+            throw new MojoExecutionException(e);
+        }
+    }
+}

maven-plugin/src/main/java/eu/maveniverse/maven/toolbox/plugin/gav/GavSearchMojoSupport.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2023-2024 Maveniverse Org.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v20.html
+ */
+package eu.maveniverse.maven.toolbox.plugin.gav;
+
+import eu.maveniverse.maven.toolbox.shared.ToolboxCommando;
+import org.apache.maven.plugins.annotations.Parameter;
+import org.eclipse.aether.repository.RemoteRepository;
+
+public abstract class GavSearchMojoSupport extends GavMojoSupport {
+    /**
+     * A repository ID. Maybe a "well known" one, or if all repository data given, a new one.
+     */
+    @Parameter(property = "repositoryId", defaultValue = "central")
+    protected String repositoryId;
+
+    /**
+     * The base URI of the remote repository.
+     */
+    @Parameter(property = "repositoryBaseUri")
+    protected String repositoryBaseUri;
+
+    /**
+     * The vendor of the remote repository.
+     */
+    @Parameter(property = "repositoryVendor")
+    private String repositoryVendor;
+
+    protected RemoteRepository getRemoteRepository(ToolboxCommando toolboxCommando) {
+        RemoteRepository remoteRepository =
+                toolboxCommando.getKnownRemoteRepositories().get(repositoryId);
+        if (remoteRepository != null) {
+            return remoteRepository;
+        }
+        if (repositoryBaseUri == null && repositoryVendor == null) {
+            throw new IllegalArgumentException("for new remote repository one must specify all information");
+        }
+        return new RemoteRepository.Builder(repositoryId, repositoryVendor, repositoryBaseUri).build();
+    }
+}