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https://issues.apache.org/jira/browse/MTOOLCHAINS-49?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17821646#comment-17821646
]
ASF GitHub Bot commented on MTOOLCHAINS-49:
-------------------------------------------
gnodet commented on code in PR #14:
URL:
https://github.com/apache/maven-toolchains-plugin/pull/14#discussion_r1505898831
##########
src/main/java/org/apache/maven/plugins/toolchain/jdk/GenerateJdkToolchainsXmlMojo.java:
##########
@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.maven.plugins.toolchain.jdk;
+
+import javax.inject.Inject;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.toolchain.model.PersistedToolchains;
+import org.apache.maven.toolchain.model.io.xpp3.MavenToolchainsXpp3Writer;
+
+/**
+ * Run the JDK discovery mechanism and generates the toolchains XML.
+ */
+@Mojo(name = "generate-jdk-toolchains-xml", requiresProject = false)
+public class GenerateJdkToolchainsXmlMojo extends AbstractMojo {
+
+ /**
+ * The path and name pf the toolchain XML file that will be generated.
+ * If not provided, the XML will be written to the standard output.
+ */
+ @Parameter(property = "toolchain.file")
+ String file;
+
+ /**
+ * Toolchain discoverer
+ */
+ @Inject
+ ToolchainDiscoverer discoverer;
+
+ @Override
+ public void execute() throws MojoFailureException {
+ try {
+ PersistedToolchains toolchains = discoverer.discoverToolchains();
+ if (file != null) {
+ Path file = Paths.get(this.file).toAbsolutePath();
+ Files.createDirectories(file.getParent());
+ try (Writer writer = Files.newBufferedWriter(file)) {
+ new MavenToolchainsXpp3Writer().write(writer, toolchains);
+ }
+ } else {
+ StringWriter writer = new StringWriter();
+ new MavenToolchainsXpp3Writer().write(writer, toolchains);
+ System.out.println(writer);
Review Comment:
Per [StringWriter's
javadoc](https://docs.oracle.com/javase%2F7%2Fdocs%2Fapi%2F%2F/java/io/StringWriter.html#toString()),
`writer.toString()` is the content of the writer, so
`System.out.println(writer)` will print the content of the writer to std out,
that's what I'm looking for.
> Automatic discovery of JDK toolchains
> -------------------------------------
>
> Key: MTOOLCHAINS-49
> URL: https://issues.apache.org/jira/browse/MTOOLCHAINS-49
> Project: Maven Toolchains Plugin
> Issue Type: Improvement
> Reporter: Guillaume Nodet
> Assignee: Guillaume Nodet
> Priority: Major
>
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