Refactoring. API simplifications. Documentation updates.
[javainspect.git] / src / main / java / eu / svjatoslav / inspector / java / structure / ClassGraph.java
old mode 100644 (file)
new mode 100755 (executable)
index bda0882..f3afd80
@@ -1,10 +1,10 @@
 /*
  * JavaInspect - Utility to visualize java software
- * Copyright (C) 2013, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- * 
+ * Copyright (C) 2013-2015, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
+ *
  * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
+ * modify it under the terms of version 3 of the GNU Lesser General Public License
+ * or later as published by the Free Software Foundation.
  */
 
 package eu.svjatoslav.inspector.java.structure;
@@ -12,57 +12,95 @@ package eu.svjatoslav.inspector.java.structure;
 import java.io.File;
 import java.io.IOException;
 import java.io.PrintWriter;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import eu.svjatoslav.commons.file.CommonPathResolver;
+import eu.svjatoslav.commons.string.WildCardMatcher;
+import eu.svjatoslav.inspector.java.methods.Clazz;
+import eu.svjatoslav.inspector.java.methods.ProjectScanner;
 
 public class ClassGraph {
 
        /**
         * Maps class fully qualified names to class descriptors.
         */
-       Map<String, ClassDescriptor> nameToClassMap = new HashMap<String, ClassDescriptor>();
+       private final Map<String, ClassDescriptor> fullyQualifiedNameToClassMap = new HashMap<String, ClassDescriptor>();
 
-       public ClassGraph() {
-       }
+       private final List<String> blacklistClassPatterns = new ArrayList<String>();
 
-       public ClassGraph(final Class<? extends Object> clazz) {
-               addClass(clazz);
-       }
+       private final List<String> whitelistClassPatterns = new ArrayList<String>();
 
-       public ClassGraph(final Object root) {
-               addClass(root.getClass());
-       }
+       private String targetDirectory = CommonPathResolver.getDesktopDirectory()
+                       .getAbsolutePath() + "/";
 
-       public ClassDescriptor addClass(final Class<? extends Object> clazz) {
+       private boolean keepDotFile;
 
-               if (clazz == null)
-                       return null;
+       public ClassGraph() {
+       }
+
+       /**
+        * @param objects
+        *            objects that shall be added to graph
+        */
+       public ClassGraph add(final Object... objects) {
 
-               final String className = clazz.getName();
+               if (objects != null)
+                       for (final Object object : objects)
+                               addObject(object);
 
-               if (nameToClassMap.containsKey(className))
-                       return nameToClassMap.get(className);
+               return this;
+       }
 
-               return new ClassDescriptor(clazz, this);
+       private void addObject(final Object object) {
+               if (object instanceof Class)
+                       getOrCreateClassDescriptor((Class) object);
+               else
+                       getOrCreateClassDescriptor(object.getClass());
        }
 
-       public ClassDescriptor addObject(final Object object) {
-               return addClass(object.getClass());
+       /**
+        * @param path
+        *            path to recursively scan for java source code could be
+        *            relative to current project or absolute
+        */
+       public void addProject(final String path) {
+               final ProjectScanner projectScanner = new ProjectScanner(new File(path));
+               for (final Clazz clazz : projectScanner.getAllClasses())
+                       try {
+                               System.out.println("Class full name: " + clazz.getFullName());
+                               final Class c = this.getClass().forName(clazz.getFullName());
+                               addObject(c);
+                       } catch (final Exception exception) {
+                               System.out.println("cannot add class: "
+                                               + exception.getMessage());
+                       }
        }
 
-       public void generateGraph(final String graphName) {
-               generateGraph(graphName, false);
+       public void blacklistClassPattern(final String pattern) {
+               blacklistClassPatterns.add(pattern);
        }
 
-       public void generateGraph(final String graphName, final boolean keepDotFile) {
+       /**
+        * @param targetDirectory
+        *            target directory name
+        *
+        * @param resultFileName
+        *            file name for the generated graph. File extension will be
+        *            added automatically. Existing file with the same name will be
+        *            overwritten.
+        *
+        * @param keepDotFile
+        *            if set to <code>true</code> then intermediary GraphViz DOT
+        *            file will be kept.
+        */
 
-               final String desktopPath = CommonPathResolver.getDesktopDirectory()
-                               .getAbsolutePath() + "/";
+       public void generateGraph(final String resultFileName) {
 
-               final String dotFilePath = desktopPath + graphName + ".dot";
-               final String imageFilePath = desktopPath + graphName + ".png";
+               final String dotFilePath = targetDirectory + resultFileName + ".dot";
+               final String imageFilePath = targetDirectory + resultFileName + ".png";
 
                System.out.println("Dot file path:" + dotFilePath);
 
@@ -75,20 +113,20 @@ public class ClassGraph {
                        // execute GraphViz to visualize graph
                        try {
                                Runtime.getRuntime()
-                                               .exec(new String[] { "dot", "-Tpng", dotFilePath, "-o",
-                                                               imageFilePath }).waitFor();
+                               .exec(new String[] { "dot", "-Tpng", dotFilePath, "-o",
+                                               imageFilePath }).waitFor();
                        } catch (final InterruptedException e) {
                        } finally {
                        }
 
                        if (!keepDotFile) {
                                // delete dot file
-                               final File dotFile = new File(dotFilePath);
-                               dotFile.delete();
+                               new File(dotFilePath).delete();
                        }
                } catch (final IOException e) {
                        System.err.println(e);
                }
+
        }
 
        private String getDot() {
@@ -97,7 +135,7 @@ public class ClassGraph {
                result.append("digraph Java {\n");
                result.append("graph [rankdir=LR, overlap = false, concentrate=true];\n");
 
-               for (final Map.Entry<String, ClassDescriptor> entry : nameToClassMap
+               for (final Map.Entry<String, ClassDescriptor> entry : fullyQualifiedNameToClassMap
                                .entrySet())
                        result.append(entry.getValue().getDot());
 
@@ -107,4 +145,76 @@ public class ClassGraph {
                return resultStr;
        }
 
+       /**
+        * @param clazz
+        *            class that shall be added to graph
+        */
+       protected ClassDescriptor getOrCreateClassDescriptor(final Class clazz) {
+
+               if (clazz == null)
+                       return null;
+
+               final String classFullyQualifiedName = clazz.getName();
+
+               // reuse existing instance if possible
+               if (fullyQualifiedNameToClassMap.containsKey(classFullyQualifiedName))
+                       return fullyQualifiedNameToClassMap.get(classFullyQualifiedName);
+
+               // create new class descriptor
+               final ClassDescriptor newClassDescriptor = new ClassDescriptor(this);
+               fullyQualifiedNameToClassMap.put(classFullyQualifiedName,
+                               newClassDescriptor);
+
+               newClassDescriptor.analyzeClass(clazz);
+
+               return newClassDescriptor;
+       }
+
+       /**
+        * Hide orphaned class that have no references
+        */
+       public void hideOrphanedClasses() {
+
+               for (final ClassDescriptor classDescriptor : fullyQualifiedNameToClassMap
+                               .values())
+                       classDescriptor.hideClassIfNoReferences();
+
+       }
+
+       protected boolean isClassShown(final String className) {
+               for (final String pattern : blacklistClassPatterns)
+                       if (WildCardMatcher.match(className, pattern))
+                               return false;
+
+               if (!whitelistClassPatterns.isEmpty()) {
+                       for (final String pattern : whitelistClassPatterns)
+                               if (WildCardMatcher.match(className, pattern))
+                                       return true;
+                       return false;
+               }
+
+               return true;
+       }
+
+       public ClassGraph setKeepDotFile(final boolean keepDotFile) {
+               this.keepDotFile = keepDotFile;
+
+               return this;
+       }
+
+       public ClassGraph setTargetDirectory(String directoryPath) {
+               if (!directoryPath.endsWith("/"))
+                       directoryPath += "/";
+
+               targetDirectory = directoryPath;
+
+               return this;
+       }
+
+       public ClassGraph whitelistClassPattern(final String pattern) {
+               whitelistClassPatterns.add(pattern);
+
+               return this;
+       }
+
 }