cat.inspiracio.orange.OrangeMojo Maven / Gradle / Ivy

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Orange-maven-plugin builds template files for use with orange-servlet. Orange Servlet provides HTML templating with server-side Java.

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package cat.inspiracio.orange;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;

import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.plugin.logging.Log;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.project.MavenProject;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;

import cat.inspiracio.html.HTMLBuilder;

/** orange-maven-plugin
 * 
 * https://maven.apache.org/guides/plugin/guide-java-plugin-development.html
 * 
 * Call in phase generate-sources, makes .java files from the .html files. */
@Mojo(name="orange")
public class OrangeMojo extends AbstractMojo{

	/** Within the maven project, the directory that contains the web app source files. 
	 * XXX parametrise! */
	private static final String WEBAPP = "src/main/webapp";

	/** Within the maven project, the directory to put the generated template java sources. 
	 * XXX parametrise! */
	private static final String GENERATED_SOURCES="target/generated-sources";

	// state -------------------------------------------
	
	@Parameter(defaultValue = "${project}")
    private MavenProject project;

	private Log log=getLog();

	/** Used for parsing file names, not really as servlet. */
	private OrangeServlet orange=new OrangeServlet();

	// called from mvn ---------------------------------
	
	/** Find *.html files and generate java sources for them. */
	public void execute() throws MojoExecutionException, MojoFailureException {
		try{
			log.info("Orange mojo");
			recurse(new File(WEBAPP));
			project.addCompileSourceRoot(GENERATED_SOURCES);
		}
		catch (Exception e) {
			throw new MojoExecutionException(e.toString());
		}
	}

	// logic ------------------------------------------
	
	private void recurse(File f) throws Exception{
		
		if(f.isDirectory()){
			for(File n : f.listFiles())
				recurse(n);
			return;
		}
		
		if(isHTML(f))
			generate(f);
	}
	
	/** Generate *.java from *.html 
	 * @param f the html file
	 * @throws Exception */
	private void generate(File f) throws Exception{
		//make java class name
		String path=f.getPath();
		path=path.substring(WEBAPP.length());
		String packageName=orange.packageName(path);
		String className=orange.className(path);

		//make java file name
		String folder=packageName.replaceAll("\\.", "/");
		String java=GENERATED_SOURCES + "/" + folder + "/" + className + ".java";
		new File(GENERATED_SOURCES + "/" + folder).mkdirs();

		Node n=null;
		try(Reader r=new FileReader(f)){
			n=parse(r);
		}
		try(Writer w=new FileWriter(new File(java))){
			Programmer p=new Programmer(w);
			p.setLog(log);
			p.setPackage(packageName);
			p.setClass(className);
			p.generate(n);
		}
	}

    /** Parses real html5. 
	 * @see cat.inspiracio.html.HTMLServlet#parse(java.io.Reader) */
	private Node parse(Reader reader) throws IOException, SAXException{
		HTMLBuilder builder=new HTMLBuilder();
		return builder.parse(reader);
	}

	private boolean isHTML(File f){
		String name=f.getName();
		return name.endsWith(".html");
	}
}