add Javadoc visitor

candy-generator/src/main/java/org/jsweet/publisher/visitor/MvnJavadoc.java

@@ -0,0 +1,45 @@
+package org.jsweet.publisher.visitor;
+
+import java.io.File;
+
+import org.cincheo.filevisitor.FileVisitor;
+import org.cincheo.filevisitor.ProcessUtil;
+import org.jsweet.publisher.Main;
+
+public class MvnJavadoc implements FileVisitor {
+
+	int count = 0;
+
+	@Override
+	public void onBegin() {
+		System.out.println("=== Javadoc === ");
+	}
+
+	@Override
+	public boolean visit(File file) {
+		try {
+			// System.out.println("visiting: " + file);
+			if (file.isFile() && file.getName().equals("pom.xml")) {
+
+				ProcessUtil.runCommand(Main.MAVEN_CMD, file.getParentFile(), false, (out) -> {
+					System.out.println(out);
+				}, (p1) -> {
+					count++;
+				}, () -> {
+					System.out.println("ERROR: cannot generate javadoc");
+				}, "javadoc:javadoc");
+			}
+			return true;
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	@Override
+	public boolean onEnd() {
+		System.out.println("=== Deployed Javadoc for " + count + " project(s) ===");
+		System.out.println();
+		return true;
+	}
+
+}