package de.saumya.mojo.gem;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.net.URL;
import java.sql.Date;
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;
import org.apache.maven.artifact.resolver.ArtifactResolutionResult;
import org.apache.maven.artifact.resolver.filter.ArtifactFilter;
import org.apache.maven.model.Dependency;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.util.FileUtils;
import org.codehaus.plexus.util.StringUtils;
import de.saumya.mojo.ruby.script.ScriptException;
/**
* goal to convert that artifact into a gem or uses a given gemspec to build a gem.
*
* @goal package
* @requiresDependencyResolution test
*/
public class PackageMojo extends AbstractGemMojo {
/**
* @parameter expression="${project.build.directory}"
*/
File buildDirectory;
/**
* the gemspec to use for building the gem
* <br/>
* Command line -Dgemspec=...
*
* @parameter default-value="${gemspec}"
*/
File gemspec;
/**
* use the pom to generate a gemspec and overwrite the one in lauchDirectory.
* <br/>
* Command line -Dgemspec.overwrite=...
*
* @parameter default-value="${gemspec.overwrite}"
*/
boolean gemspecOverwrite = false;
/** @parameter */
private String date;
/** @parameter */
private String extraRdocFiles;
/** @parameter */
private String extraFiles;
/** @parameter */
private String rdocOptions;
/** @parameter */
private String requirePaths;
/** @parameter */
private String rubyforgeProject;
/** @parameter */
private String rubygemsVersion;
/** @parameter */
private String requiredRubygemsVersion;
/** @parameter */
private String bindir;
/** @parameter */
private String requiredRubyVersion;
/** @parameter */
private String postInstallMessage;
/** @parameter */
private String executables;
/** @parameter */
private String extensions;
/** @parameter */
private String platform;
/** @parameter default-value="gem_hook.rb" */
private String gemHook;
/**
* @parameter default-value="false"
*/
boolean includeDependencies;
/**
* use repository layout for included dependencies
* @parameter default-value="false"
*/
boolean useRepositoryLayout;
private void generatePom(File source, File target) throws ScriptException, IOException {
URL url = Thread.currentThread().getContextClassLoader().getResource("maven/tools/pom.rb");
String baseUrl = url.toExternalForm().replace("/maven/tools/pom.rb", "");
// this assumes to get an url JRuby understands !!
this.factory.newScript("$LOAD_PATH << '" + baseUrl + "';"
+ "$LOAD_PATH << 'uri:" + baseUrl + "';"
+ "require 'maven/tools/pom';"
+ "puts Maven::Tools::POM.new('" + source.getAbsolutePath() + "').to_s")
.executeIn(launchDirectory(), target);
}
@Override
public void executeJRuby() throws MojoExecutionException,
MojoFailureException, ScriptException {
final MavenProject project = this.project;
final GemArtifact artifact = new GemArtifact(project);
try {
// first case no gemspec file given but there is pom => use pom to generate gemspec
if (this.gemspec == null && project.getBasedir() != null
&& project.getBasedir().exists()) {
// TODO generate the gemspec in the prepare-package phase so we
// can use it separately
buildFromPom(project, artifact);
// use POM generated by polyglot maven instead of project
// file (which can be 'Gemfile' or a gemspec file) to allow
// to install it into the local repository and be
// usable for proper maven
// maybe that is a bug in polyglot maven ?
final File pom = new File(this.project.getFile()
.getAbsolutePath()
+ ".pom");
if (pom.exists()) {
this.project.setFile(pom);
}
}
else {
// no gemspec file given => find a gemspec file in launchDirectory
if (this.gemspec == null) {
for (final File f : launchDirectory().listFiles()) {
if (f.getName().endsWith(".gemspec")) {
if (this.gemspec == null) {
this.gemspec = f;
}
else {
throw new MojoFailureException("more than one gemspec file found, use -Dgemspec=... to specifiy one");
}
}
}
if (this.gemspec == null) {
throw new MojoFailureException("no gemspec file or pom found, use -Dgemspec=... to specifiy a gemspec file or '-f ...' to use a pom file");
}
else {
getLog().info("use gemspec: " + this.gemspec);
}
}
ArtifactResolutionResult jarDependencyArtifacts = includeDependencies( project,
artifact );
if (jarDependencyArtifacts != null ) {
getLog().info("use repository layout? " + this.useRepositoryLayout);
for (final Object element : jarDependencyArtifacts.getArtifacts()) {
final Artifact dependency = (Artifact) element;
getLog().info(" -- include -- " + dependency);
File target;
if ( useRepositoryLayout )
{
StringBuilder path = new StringBuilder( libDirectory.getAbsolutePath() );
path.append( File.separatorChar ).append( dependency.getGroupId().replace( ".", File.separator ) );
path.append( File.separatorChar ).append( dependency.getArtifactId() );
path.append( File.separatorChar ).append( dependency.getVersion() );
target = new File( path.toString(), dependency.getFile().getName() );
target.getParentFile().mkdirs();
}
else
{
target = new File( libDirectory, dependency.getFile().getName() );
}
FileUtils.copyFile( dependency.getFile(), target );
}
}
// now we have a gemspec file - either found or given
this.factory.newScriptFromJRubyJar("gem")
.addArg("build", this.gemspec)
.executeIn(launchDirectory());
File newPom = new File( this.gemspec.getParentFile(), "pom." + this.gemspec.getName() + ".xml");
generatePom(this.gemspec, newPom);
project.setFile(newPom);
// find file with biggest lastModified
File gemFile = null;
for (final File f : launchDirectory().listFiles()) {
if (f.getName().endsWith(".gem")) {
if (gemFile == null || gemFile.lastModified() < f.lastModified() )
{
gemFile = f;
}
}
}
if (project.getFile() != null && artifact.isGem()) {
// only when the pom exist there will be an artifact
FileUtils.copyFileIfModified(gemFile, artifact.getFile());
gemFile.delete();
}
else {
// keep the gem where it is when there is no buildDirectory
if (this.buildDirectory.exists()) {
FileUtils.copyFileIfModified(gemFile,
new File(this.buildDirectory,
gemFile.getName()));
gemFile.deleteOnExit();
}
}
}
}
catch (final IOException e) {
throw new MojoExecutionException("error gemifing pom", e);
}
}
private void buildFromPom(final MavenProject project, final GemArtifact artifact)
throws MojoExecutionException, IOException, ScriptException {
getLog().info("building gem for " + artifact + " . . .");
final File gemDir = new File(this.buildDirectory, artifact.getGemName());
final File gemSpec = new File(gemDir, artifact.getGemName()
+ ".gemspec");
final GemspecWriter gemSpecWriter = new GemspecWriter(gemSpec,
project,
artifact);
if (this.date != null) {
gemSpecWriter.append("date", Date.valueOf(this.date).toString());
}
gemSpecWriter.append("rubygems_version", this.rubygemsVersion);
gemSpecWriter.append("required_rubygems_version",
this.requiredRubygemsVersion);
gemSpecWriter.append("required_ruby_version", this.requiredRubyVersion);
gemSpecWriter.append("bindir", this.bindir);
gemSpecWriter.append("post_install_message", this.postInstallMessage);
gemSpecWriter.append("rubyforge_project", this.rubyforgeProject);
gemSpecWriter.appendRdocFiles(this.extraRdocFiles);
gemSpecWriter.appendFiles(this.extraFiles);
gemSpecWriter.appendList("executables", this.executables);
gemSpecWriter.appendList("extensions", this.extensions);
gemSpecWriter.appendList("rdoc_options", this.rdocOptions);
gemSpecWriter.appendList("require_paths", this.requirePaths);
final File rubyFile;
if (artifact.hasJarFile()) {
gemSpecWriter.appendPlatform(this.platform == null
? "java"
: this.platform);
gemSpecWriter.appendJarfile(artifact.getJarFile(),
artifact.getJarFile().getName());
final File lib = new File(gemDir, "lib");
lib.mkdirs();
// need relative filename here
rubyFile = new File(lib.getName(), artifact.getGemName() + ".rb");
gemSpecWriter.appendFile(rubyFile);
}
else {
rubyFile = null;
gemSpecWriter.appendPlatform(this.platform);
}
ArtifactResolutionResult jarDependencyArtifacts = includeDependencies( project,
artifact );
if (jarDependencyArtifacts != null ) {
for (final Object element : jarDependencyArtifacts.getArtifacts()) {
final Artifact dependency = (Artifact) element;
getLog().info(" -- include -- " + dependency);
gemSpecWriter.appendJarfile(dependency.getFile(),
dependency.getFile().getName());
}
}
// TODO make it the maven way (src/main/ruby + src/test/ruby) or the
// ruby way (lib + spec + test)
// TODO make a loop or so ;-)
final File binDir = new File(project.getBasedir(), "bin");
final File libDir = new File(project.getBasedir(), "lib");
final File generatorsDir = new File(project.getBasedir(), "generators");
final File specDir = new File(project.getBasedir(), "spec");
final File testDir = new File(project.getBasedir(), "test");
if (binDir.exists()) {
gemSpecWriter.appendPath("bin");
for (final File file : binDir.listFiles()) {
// if ( file.canExecute() ) { // java1.6 feature which will fail
// on jre1.5 runtimes
gemSpecWriter.appendExecutable(file.getName());
// }
}
}
if (libDir.exists()) {
gemSpecWriter.appendPath("lib");
}
if (generatorsDir.exists()) {
gemSpecWriter.appendPath("generators");
}
if (specDir.exists()) {
gemSpecWriter.appendPath("spec");
gemSpecWriter.appendTestPath("spec");
}
if (testDir.exists()) {
gemSpecWriter.appendPath("test");
gemSpecWriter.appendTestPath("test");
}
for (final Dependency dependency : project.getDependencies()) {
if (!dependency.isOptional()
&& dependency.getType().contains("gem")) {
final String prefix = dependency.getGroupId()
.equals("rubygems") ? "" : dependency.getGroupId()
+ ".";
if ((Artifact.SCOPE_COMPILE + Artifact.SCOPE_RUNTIME).contains(dependency.getScope())) {
gemSpecWriter.appendDependency(prefix
+ dependency.getArtifactId(),
dependency.getVersion());
}
else if ((Artifact.SCOPE_PROVIDED + Artifact.SCOPE_TEST).contains(dependency.getScope())) {
gemSpecWriter.appendDevelopmentDependency(prefix
+ dependency.getArtifactId(),
dependency.getVersion());
}
else {
// TODO put things into "requirements"
}
}
}
gemSpecWriter.close();
gemSpecWriter.copy(gemDir);
if (artifact.hasJarFile() && !rubyFile.exists()) {
FileWriter writer = null;
try {
// need absolute filename here
writer = new FileWriter(new File(gemDir, rubyFile.getPath()));
writer.append("module ")
.append(titleizedClassname(project.getArtifactId()))
.append("\n");
writer.append(" VERSION = '")
.append(artifact.getGemVersion())
.append("'\n");
writer.append(" MAVEN_VERSION = '")
.append(project.getVersion())
.append("'\n");
writer.append("end\n");
writer.append("begin\n");
writer.append(" require 'java'\n");
writer.append(" require File.dirname(__FILE__) + '/")
.append(artifact.getJarFile().getName())
.append("'\n");
if (jarDependencyArtifacts != null) {
for (final Object element : jarDependencyArtifacts.getArtifacts()) {
final Artifact dependency = (Artifact) element;
writer.append(" require File.dirname(__FILE__) + '/")
.append(dependency.getFile().getName())
.append("'\n");
}
}
writer.append("rescue LoadError\n");
writer.append(" puts 'JAR-based gems require JRuby to load. Please visit www.jruby.org.'\n");
writer.append(" raise\n");
writer.append("end\n");
writer.append("\n");
writer.append("load File.dirname(__FILE__) + '/" + this.gemHook
+ "' if File.exists?( File.dirname(__FILE__) + '/"
+ this.gemHook + "')\n");
}
catch (final IOException e) {
throw new MojoExecutionException("error writing ruby file", e);
}
finally {
if (writer != null) {
try {
writer.close();
}
catch (final IOException ignore) {
}
}
}
}
final File localGemspec = new File(launchDirectory(), gemSpec.getName());
this.factory.newScriptFromJRubyJar("gem")
.addArg("build", gemSpec)
.executeIn(gemDir);
if ((!localGemspec.exists() || !FileUtils.contentEquals(localGemspec,
gemSpec))
&& this.gemspecOverwrite) {
getLog().info("overwrite gemspec '" + localGemspec.getName() + "'");
FileUtils.copyFile(gemSpec, localGemspec);
}
final StringBuilder gemFilename = new StringBuilder("rubygems".equals(artifact.getGroupId())
? ""
: artifact.getGroupId() + ".").append(artifact.getArtifactId())
.append("-")
.append(artifact.getGemVersion())
.append("java-gem".equals(artifact.getType()) || "java".equals(this.platform) ? "-java" : "")
.append(".gem");
FileUtils.copyFile(new File(gemDir, gemFilename.toString()),
artifact.getFile());
}
private ArtifactResolutionResult includeDependencies( MavenProject project, final GemArtifact artifact)
throws IOException {
ArtifactResolutionResult jarDependencyArtifacts = null;
getLog().info("include dependencies? " + this.includeDependencies);
if (this.includeDependencies) {
final ArtifactFilter filter = new ArtifactFilter() {
public boolean include(final Artifact candidate) {
if (candidate == artifact) {
return true;
}
final boolean result = (candidate.getType().equals("jar") && ("compile".equals(candidate.getScope()) || "runtime".equals(candidate.getScope())));
return result;
}
};
// remember file location since resolve will set it to
// local-repository location
final File artifactFile = artifact.getFile();
final ArtifactResolutionRequest request = new ArtifactResolutionRequest().setArtifact(project.getArtifact())
.setResolveRoot(false)
.setLocalRepository(this.localRepository)
.setRemoteRepositories(project.getRemoteArtifactRepositories())
.setCollectionFilter(filter)
.setManagedVersionMap(project.getManagedVersionMap())
.setArtifactDependencies(project.getDependencyArtifacts());
jarDependencyArtifacts = this.repositorySystem.resolve(request);
// keep the artifactFile on build directory
artifact.setFile(artifactFile);
}
return jarDependencyArtifacts;
}
private String titleizedClassname(final String artifactId) {
final StringBuilder name = new StringBuilder();
for (final String part : artifactId.split("-")) {
name.append(StringUtils.capitalise(part));
}
return name.toString();
}
@Override
protected void executeWithGems() throws MojoExecutionException,
ScriptException, IOException {
// nothing to do here since we override executeJRuby
}
}