6: Enable checking package of Java files

src/main/java/com/bartek/esa/core/archetype/JavaPlugin.java

@@ -1,18 +1,25 @@
 package com.bartek.esa.core.archetype;
 
+import com.bartek.esa.core.model.enumeration.Severity;
+import com.bartek.esa.core.xml.XmlHelper;
 import com.bartek.esa.error.EsaException;
 import com.bartek.esa.file.matcher.GlobMatcher;
 import com.github.javaparser.StaticJavaParser;
 import com.github.javaparser.ast.CompilationUnit;
 import io.vavr.control.Try;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
 
+import javax.xml.xpath.XPathConstants;
 import java.io.File;
 
 public abstract class JavaPlugin extends BasePlugin {
     private final GlobMatcher globMatcher;
+    private final XmlHelper xmlHelper;
 
-    public JavaPlugin(GlobMatcher globMatcher) {
+    public JavaPlugin(GlobMatcher globMatcher, XmlHelper xmlHelper) {
         this.globMatcher = globMatcher;
+        this.xmlHelper = xmlHelper;
     }
 
     @Override
@@ -22,9 +29,27 @@ public abstract class JavaPlugin extends BasePlugin {
 
     @Override
     protected void run(File file) {
+        if(!isApplicationPackageFile(file)) {
+            return;
+        }
+
         CompilationUnit compilationUnit = Try.of(() -> StaticJavaParser.parse(file)).getOrElseThrow(EsaException::new);
         run(compilationUnit);
     }
 
+    private boolean isApplicationPackageFile(File file) {
+        Document manifest = getManifest();
+        Node root = (Node) xmlHelper.xPath(manifest, "/manifest", XPathConstants.NODE);
+        Node packageValue = root.getAttributes().getNamedItem("package");
+
+        if(packageValue == null) {
+            addIssue(Severity.ERROR, ".PACKAGE_LACK", null, null);
+            return false;
+        }
+
+        String path = packageValue.getNodeValue().replaceAll("\\.", "/");
+        return globMatcher.fileMatchesGlobPattern(file, String.format("**/%s/**", path));
+    }
+
     public abstract void run(CompilationUnit compilationUnit);
 }

src/main/java/com/bartek/esa/core/executor/PluginExecutor.java

@@ -30,11 +30,9 @@ public class PluginExecutor {
     private List<Issue> executeForFile(File manifest, File file, Set<Plugin> plugins) {
         Document xmlManifest = xmlHelper.parseXml(manifest);
         return plugins.stream()
+                .peek(plugin -> plugin.update(file, xmlManifest))
                 .filter(plugin -> plugin.supports(file))
-                .map(plugin -> {
-                    plugin.update(file, xmlManifest);
-                    return plugin.runForIssues();
-                })
+                .map(Plugin::runForIssues)
                 .flatMap(List::stream)
                 .collect(toList());
     }

src/main/resources/description.properties

@@ -0,0 +1 @@
+com.bartek.esa.core.plugin.JavaPlugin.PACKAGE_LACK=There is no package defined in AndroidManifest.xml file. Please check fix to use this tool.