Possibility to provide classpath dir. Updated help and documentation.

[javainspect.git] / src / main / java / eu / svjatoslav / inspector / java / commandline / Main.java

diff --git a/src/main/java/eu/svjatoslav/inspector/java/commandline/Main.java b/src/main/java/eu/svjatoslav/inspector/java/commandline/Main.java
index 6a63588..0c63a55 100644 (file)
--- a/src/main/java/eu/svjatoslav/inspector/java/commandline/Main.java
+++ b/src/main/java/eu/svjatoslav/inspector/java/commandline/Main.java
@@ -19,9 +19,13 @@ import java.util.jar.JarInputStream;
 public class Main {
     public static void main(String[] args) throws IOException, ClassNotFoundException {
         CommandlineConfiguration configuration = new CommandlineConfiguration(args);
-        if (!configuration.configurationOk)
+        if (!configuration.configurationOk) {
+            configuration.parser.showHelp();
             System.exit(1);
-            
+        }
+
+        if (configuration.showHelp.isSpecified()) configuration.parser.showHelp();
+
         getClassGraph(configuration).generateGraph(configuration.graphName.getValue());
 
         if (configuration.isDebug())
@@ -32,7 +36,7 @@ public class Main {
         List<File> jarFiles = configuration.jarFiles.getValue();
 
         URLClassLoader classLoader = new URLClassLoader(
-                getFileUrls(jarFiles),
+                getClasspathUrls(jarFiles, configuration.classPaths.getValue()),
                 configuration.getClass().getClassLoader());
 
         ClassGraph classGraph = new ClassGraph();
@@ -45,9 +49,16 @@ public class Main {
 
         classGraph.setKeepDotFile(configuration.keepDotFile.getValue());
 
-        for (File jarFile : jarFiles)
-            addJarToGraph(jarFile, classLoader, classGraph, configuration);
+        if (configuration.rootClasses.isSpecified()) {
+            // add only selected root classes
+            for (String rootClass : configuration.rootClasses.getValue())
+                attemptClassAdditionByName(classLoader, classGraph, configuration, rootClass);
 
+        } else {
+            // add all classes in the jar files to graph
+            for (File jarFile : jarFiles)
+                addJarToGraph(jarFile, classLoader, classGraph, configuration);
+        }
         configuration.blacklistGlob.getValue().forEach(classGraph::blacklistClassGlob);
         configuration.whitelistGlob.getValue().forEach(classGraph::whitelistClassGlob);
 
@@ -57,8 +68,17 @@ public class Main {
         return classGraph;
     }
 
-    private static URL[] getFileUrls(List<File> jarFiles) {
+    private static URL[] getClasspathUrls(List<File> jarFiles, List<File> classpathDirectories) {
         List<URL> urls = new ArrayList<>();
+
+        classpathDirectories.forEach(classpathDirectory -> {
+            try {
+                urls.add(classpathDirectory.toURI().toURL());
+            } catch (MalformedURLException e) {
+                throw new RuntimeException(e);
+            }
+        });
+
         jarFiles.forEach((File file) -> {
             try {
                 urls.add(file.toURI().toURL());
@@ -74,17 +94,20 @@ public class Main {
             File jarFile, URLClassLoader classLoader, ClassGraph classGraph, CommandlineConfiguration configuration)
             throws IOException, ClassNotFoundException {
 
-        for (String className : getClassNamesFromJar(jarFile)) {
+        for (String className : getClassNamesFromJar(jarFile))
+            attemptClassAdditionByName(classLoader, classGraph, configuration, className);
+    }
+
+    private static void attemptClassAdditionByName(URLClassLoader classLoader, ClassGraph classGraph, CommandlineConfiguration configuration, String className) throws ClassNotFoundException {
+        if (configuration.isDebug())
+            System.out.println("Adding class to graph: " + className);
+        try {
+            classGraph.add(loadClassByName(classLoader, className));
+        } catch (NoClassDefFoundError e) {
             if (configuration.isDebug())
-                System.out.println("Adding class to graph: " + className);
-            try {
-                classGraph.add(loadClassByName(classLoader, className));
-            } catch (NoClassDefFoundError e){
-                if (configuration.isDebug())
-                    System.out.println("Class definition was not found.");
-                // Sometimes referenced classes are not found in the same Jar.
-                // Let's ignore this and proceed with the classes that we have.
-            }
+                System.out.println("Class definition was not found.");
+            // Sometimes referenced classes are not found in the same Jar.
+            // Let's ignore this and proceed with the classes that we have.
         }
     }