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-rwxr-xr-xsrc/main/java/io/trygvis/maven/classpath/ClasspathMojo.java125
1 files changed, 125 insertions, 0 deletions
diff --git a/src/main/java/io/trygvis/maven/classpath/ClasspathMojo.java b/src/main/java/io/trygvis/maven/classpath/ClasspathMojo.java
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+++ b/src/main/java/io/trygvis/maven/classpath/ClasspathMojo.java
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+package io.trygvis.maven.classpath;
+
+import static java.util.Collections.singletonList;
+import static java.util.Collections.sort;
+import static org.apache.maven.plugins.annotations.LifecyclePhase.GENERATE_RESOURCES;
+import static org.apache.maven.plugins.annotations.ResolutionScope.RUNTIME;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
+import org.apache.maven.artifact.repository.layout.DefaultRepositoryLayout;
+import org.apache.maven.model.Resource;
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.plugins.annotations.Component;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.project.MavenProject;
+import org.codehaus.plexus.util.IOUtil;
+import org.sonatype.plexus.build.incremental.BuildContext;
+
+/**
+ * Writes the path of each compile/runtime dependency of a project to a file,
+ * where each path is relative to the root of a maven repository.
+ * <p>
+ * For example, if the project depends on commons-lang 2.6 and commons-math 2.2,
+ * then the file written will contain the line:
+ * <pre>
+ * commons-lang/commons-lang/2.6/commons-lang-2.6.jar
+ * org/apache/commons/commons-math/2.2/commons-math-2.2.jar
+ * </pre>
+ */
+@Mojo(name = "classpath",
+ defaultPhase = GENERATE_RESOURCES,
+ requiresDependencyCollection = RUNTIME)
+public class ClasspathMojo extends AbstractMojo {
+
+ @Component
+ private BuildContext context;
+
+ @Parameter(property = "project", required = true, readonly = true)
+ private MavenProject project;
+
+ @Parameter(defaultValue = "${project.build.directory}/generated-resources/classpath", property = "classpathOutputDirectory")
+ private File outputDirectory;
+
+ @Parameter(defaultValue = "classpath.txt")
+ private String file;
+
+ @Parameter(property = "sort", defaultValue = "false")
+ private boolean sort;
+
+ public void execute() throws MojoExecutionException, MojoFailureException {
+ List<String> paths = buildClasspath();
+ writeClasspath(paths);
+ addGeneratedResourceToBuild();
+ }
+
+ @SuppressWarnings("unchecked")
+ private List<String> buildClasspath() {
+ ArtifactRepositoryLayout layout = new DefaultRepositoryLayout();
+// List<Artifact> artifacts = project.getRuntimeArtifacts();
+// Collection<Artifact> artifacts = project.getDependencyArtifacts();
+ Collection<Artifact> artifacts = project.getArtifacts();
+ List<String> paths = new ArrayList<String>(artifacts.size());
+ for (Artifact artifact : artifacts) {
+// System.out.println("artifact.getId() = " + artifact.getId());
+ String key = artifact.getGroupId() + ":" + artifact.getArtifactId() + ":" + artifact.getClassifier() + ":" + artifact.getVersion() + ":" + artifact.getType() + ":" + artifact.getClassifier();
+// System.out.println("key: " + key);
+ paths.add(key);
+ }
+
+ if (sort) {
+ sort(paths);
+ }
+ return paths;
+ }
+
+ private void writeClasspath(List<String> paths)
+ throws MojoFailureException, MojoExecutionException {
+ File output = new File(outputDirectory, file);
+ File directory = output.getParentFile();
+ if (!directory.exists() && ! directory.mkdirs()) {
+ throw new MojoFailureException("Could not create directory: " + directory);
+ }
+
+ try {
+ writeClasspathFile(output, paths);
+ } catch (IOException ex) {
+ throw new MojoExecutionException("Could not write to " + file, ex);
+ }
+ }
+
+
+ private void writeClasspathFile(File output, List<String> classpath)
+ throws IOException {
+ OutputStream os = context.newFileOutputStream(output);
+ PrintWriter writer = null;
+ try {
+ writer = new PrintWriter(new OutputStreamWriter(os, "UTF-8"));
+ for (String s : classpath) {
+ writer.println(s);
+ }
+ } finally {
+ IOUtil.close(writer);
+ os.close();
+ }
+ }
+
+ private void addGeneratedResourceToBuild() {
+ Resource resource = new Resource();
+ resource.setDirectory(outputDirectory.getPath());
+ resource.setIncludes(singletonList(file));
+ project.addResource(resource);
+ }
+}