Merge pull request #21 from moacirrf/15-test-the-possibility-to-replace-jd-core-by-cfr-another-java-decompiler

15 test the possibility to replace jd core by cfr another java decompiler

Author: moacirrf

README.md

@@ -1,15 +1,18 @@
 Java Decompiler for Netbeans ![master](https://github.com/moacirrf/nb-java-decompiler/actions/workflows/maven-publish.yml/badge.svg)
 =====================================
-Java Decompiler for Apache Netbeans, it is based on [jd-core](https://github.com/java-decompiler/jd-core), same core of [jd-gui](http://java-decompiler.github.io).
+Java Decompiler for Apache Netbeans uses [CFR - another java decompiler](https://www.benf.org/other/cfr/).
 
 ## Description
-This a very simple plugin, with only basic features, if you have some tips or want to help, make a fork and open a pull-request.
+This a very simple plugin, with only basic features. If you want to help, contact-me or make a pull-request.
 
  - Apache Netbeans 13
  - JDK 11+
+
+## Licenses
+ - NB Java Decompiler - GNU General Public License 3.0
+ - CFR - another java decompiler - MIT license
 
 ## Screenshots
 
-![NetbeansDecompileFoto11](https://user-images.githubusercontent.com/950706/146479624-4b1ce1a5-b08f-4358-9b0f-e7895d4a8a0d.png) ![NetbeansDecompileFoto12](https://user-images.githubusercontent.com/950706/146624779-b005e8b6-eb88-48a0-a48b-6ddd15e0efb5.png)
-
-![NetbeansDecompileFoto13](https://user-images.githubusercontent.com/950706/146479949-0241a1bc-60cc-4fe9-a2e0-d4f93e0b0e03.png)
+<img src="https://user-images.githubusercontent.com/950706/172032392-3a52cbbe-b55f-4784-a1cb-d259a0df02ea.png" width="50%" /><img src="https://user-images.githubusercontent.com/950706/172032681-edfbe954-a11a-4594-a5f1-99f37293a16c.png" width="49.5%"/>
+<img src="https://user-images.githubusercontent.com/950706/172033148-4d7060f1-4370-4940-b3c8-cf1e45b7ba58.png" />

nb-configuration.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project-shared-configuration>
+    <!--
+This file contains additional configuration written by modules in the NetBeans IDE.
+The configuration is intended to be shared among all the users of project and
+therefore it is assumed to be part of version control checkout.
+Without this configuration present, some functionality in the IDE may be limited or fail altogether.
+-->
+    <properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
+        <!--
+Properties that influence various parts of the IDE, especially code formatting and the like. 
+You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
+That way multiple projects can share the same settings (useful for formatting rules for example).
+Any value defined here will override the pom.xml file value but is only applicable to the current project.
+-->
+        <netbeans.hint.license>gpl30</netbeans.hint.license>
+    </properties>
+</project-shared-configuration>

pom.xml

@@ -10,7 +10,7 @@
             <plugin>
                 <groupId>org.apache.netbeans.utilities</groupId>
                 <artifactId>nbm-maven-plugin</artifactId>
-                <version>4.5</version>
+                <version>4.7</version>
                 <extensions>true</extensions>
                 <configuration>
                     <author>Moacir da Roza Flores-moacirrf@gmail.com</author>
@@ -47,21 +47,21 @@
             </plugin>
         </plugins>
     </build>
-    <dependencies>        
-        <!-- jd-core -->
+    <dependencies>
+        <!-- cfr -->
         <dependency>
-            <groupId>org.jd</groupId>
-            <artifactId>jd-core</artifactId>
-            <version>1.1.3</version>
+            <groupId>org.benf</groupId>
+            <artifactId>cfr</artifactId>
+            <version>0.152</version>
         </dependency>
-        
+                      
         <!-- noexception -->
         <dependency>
             <groupId>com.machinezoo.noexception</groupId>
             <artifactId>noexception</artifactId>
             <version>1.8.0</version>
         </dependency>
-        
+               
         <!-- Junit -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
@@ -138,6 +138,12 @@
             <artifactId>org-openide-modules</artifactId>
             <version>RELEASE130</version>
         </dependency>
+
+        <dependency>
+            <groupId>org.netbeans.api</groupId>
+            <artifactId>org-netbeans-api-java-classpath</artifactId>
+            <version>RELEASE130</version>
+        </dependency>
     </dependencies>
 
     <repositories>

src/main/java/com/mrf/javadecompiler/decompiler/DecompilerFactory.java

@@ -16,6 +16,8 @@
  */
 package com.mrf.javadecompiler.decompiler;
 
+import com.mrf.javadecompiler.decompiler.cfr.DecompilerClassImpl;
+
 /**
  *
  * @author Moacir da Roza Flores <moacirrf@gmail.com>

…iler/decompiler/DecompilerClassImpl.java …/decompiler/cfr/DecompilerClassImpl.javasrc/main/java/com/mrf/javadecompiler/decompiler/DecompilerClassImpl.java renamed to src/main/java/com/mrf/javadecompiler/decompiler/cfr/DecompilerClassImpl.java src/main/java/com/mrf/javadecompiler/decompiler/DecompilerClassImpl.java renamed to src/main/java/com/mrf/javadecompiler/decompiler/cfr/DecompilerClassImpl.java

@@ -14,14 +14,18 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-package com.mrf.javadecompiler.decompiler;
+package com.mrf.javadecompiler.decompiler.cfr;
 
-import com.mrf.javadecompiler.decompiler.jdcore.PrinterImpl;
-import com.mrf.javadecompiler.decompiler.jdcore.LoaderImpl;
+import com.mrf.javadecompiler.decompiler.Decompiler;
 import static com.machinezoo.noexception.Exceptions.wrap;
 import com.mrf.javadecompiler.exception.ExceptionHandler;
 import com.mrf.javadecompiler.filesystems.FileSystemHelper;
-import org.jd.core.v1.ClassFileToJavaSourceDecompiler;
+import java.util.Map;
+import org.benf.cfr.reader.Main;
+import org.benf.cfr.reader.apiunreleased.ClassFileSource2;
+import org.benf.cfr.reader.state.DCCommonState;
+import org.benf.cfr.reader.util.getopt.Options;
+import org.benf.cfr.reader.util.getopt.OptionsImpl;
 import org.openide.filesystems.FileObject;
 
 /**
@@ -30,21 +34,27 @@
  */
 public final class DecompilerClassImpl implements Decompiler<String, FileObject> {
 
-    public static final String HEADER_COMMENT = "//\n"
-            + "// Source code recreated by Apache Netbeans\n"
-            + "// (powered by Java Decompiler http://java-decompiler.github.io )\n"
-            + "//\n";
+    public static final String HEADER_COMMENT = "// Source code recreated by Apache Netbeans (NB Java Decompiler) \n";
+
+    private final Options options;
+
+    public DecompilerClassImpl() {
+        options = new OptionsImpl(Map.of("comments", "false", "innerclasses", "true"));
+    }
 
     @Override
     public String decompile(FileObject file) {
         return wrap(ExceptionHandler::handleException).get(() -> {
-            LoaderImpl loader = new LoaderImpl(FileSystemHelper.of(file));
-            PrinterImpl printer = new PrinterImpl();
 
-            ClassFileToJavaSourceDecompiler decompiler = new ClassFileToJavaSourceDecompiler();
-            decompiler.decompile(loader, printer, FileSystemHelper.extractName(file));
+            String className = FileSystemHelper.extractName(file);
+            FileSystemHelper helper = FileSystemHelper.of(file);
+
+            ClassFileSource2 classFileSource = new NetbeansClassFileSourceImpl(helper);
+
+            StringBuilder out = new StringBuilder(HEADER_COMMENT);
+            Main.doClass(new DCCommonState(options, classFileSource), className, false, new PluginDumperFactory(out, options));
 
-            return HEADER_COMMENT + printer.toString();
+            return out.toString();
         });
     }
 

src/main/java/com/mrf/javadecompiler/decompiler/cfr/NetbeansClassFileSourceImpl.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2022 moacirrf
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.mrf.javadecompiler.decompiler.cfr;
+
+import com.mrf.javadecompiler.filesystems.FileSystemHelper;
+import java.io.IOException;
+import java.util.Collection;
+import java.util.List;
+import static java.util.Objects.isNull;
+import org.benf.cfr.reader.apiunreleased.ClassFileSource2;
+import org.benf.cfr.reader.apiunreleased.JarContent;
+import org.benf.cfr.reader.bytecode.analysis.parse.utils.Pair;
+import org.benf.cfr.reader.util.AnalysisType;
+import org.openide.filesystems.FileObject;
+
+/**
+ *
+ * @author moacirrf
+ */
+public class NetbeansClassFileSourceImpl implements ClassFileSource2 {
+
+    private final FileSystemHelper helper;
+
+    public NetbeansClassFileSourceImpl(FileSystemHelper helper) {
+        this.helper = helper;
+    }
+
+    @Override
+    public JarContent addJarContent(String jarPath, AnalysisType analysisType) {
+        //we dont decompile complete jars
+        return null;
+    }
+
+    @Override
+    public void informAnalysisRelativePathDetail(String usePath, String classFilePath) {
+        // not used
+    }
+
+    @Override
+    public Collection<String> addJar(String jarPath) {
+         // not used
+        return List.of();
+    }
+
+    @Override
+    public String getPossiblyRenamedPath(String path) {
+        return path;
+    }
+
+    @Override
+    public Pair<byte[], String> getClassFileContent(String path) throws IOException {
+        FileObject fileObj = helper.findResource(path);
+        if (isNull(fileObj)) {
+            return null;
+        }
+
+        return Pair.make(fileObj.asBytes(), path);
+    }
+
+}

src/main/java/com/mrf/javadecompiler/decompiler/cfr/PluginDumperFactory.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2022 moacirrf
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.mrf.javadecompiler.decompiler.cfr;
+
+import org.benf.cfr.reader.bytecode.analysis.types.JavaTypeInstance;
+import org.benf.cfr.reader.state.TypeUsageInformation;
+import org.benf.cfr.reader.util.getopt.Options;
+import org.benf.cfr.reader.util.getopt.OptionsImpl;
+import org.benf.cfr.reader.util.output.Dumper;
+import org.benf.cfr.reader.util.output.DumperFactory;
+import org.benf.cfr.reader.util.output.ExceptionDumper;
+import org.benf.cfr.reader.util.output.FileSummaryDumper;
+import org.benf.cfr.reader.util.output.IllegalIdentifierDump;
+import org.benf.cfr.reader.util.output.MethodErrorCollector;
+import org.benf.cfr.reader.util.output.NopSummaryDumper;
+import org.benf.cfr.reader.util.output.ProgressDumper;
+import org.benf.cfr.reader.util.output.ProgressDumperNop;
+import org.benf.cfr.reader.util.output.StringStreamDumper;
+import org.benf.cfr.reader.util.output.SummaryDumper;
+
+/*
+* Class entirely copied from cfr.jar 
+ */
+public class PluginDumperFactory implements DumperFactory {
+
+    private final IllegalIdentifierDump illegalIdentifierDump = new IllegalIdentifierDump.Nop();
+
+    private final StringBuilder outBuffer;
+    private final Options options;
+
+    public PluginDumperFactory(StringBuilder out, Options options) {
+        this.outBuffer = out;
+        this.options = options;
+    }
+
+    @Override
+    public Dumper getNewTopLevelDumper(JavaTypeInstance classType, SummaryDumper summaryDumper, TypeUsageInformation typeUsageInformation, IllegalIdentifierDump illegalIdentifierDump) {
+        return new StringStreamDumper(new MethodErrorCollector.SummaryDumperMethodErrorCollector(classType, summaryDumper), outBuffer, typeUsageInformation, options, this.illegalIdentifierDump);
+    }
+
+    @Override
+    public Dumper wrapLineNoDumper(Dumper dumper) {
+        return dumper;
+    }
+
+    /*
+         * A summary dumper will receive errors.  Generally, it's only of value when dumping jars to file.
+     */
+    @Override
+    public SummaryDumper getSummaryDumper() {
+        if (!options.optionIsSet(OptionsImpl.OUTPUT_DIR)) {
+            return new NopSummaryDumper();
+        }
+
+        return new FileSummaryDumper(options.getOption(OptionsImpl.OUTPUT_DIR), options, null);
+    }
+
+    @Override
+    public ProgressDumper getProgressDumper() {
+        return ProgressDumperNop.INSTANCE;
+    }
+
+    @Override
+    public ExceptionDumper getExceptionDumper() {
+        return null;
+    }
+
+    @Override
+    public DumperFactory getFactoryWithPrefix(String prefix, int version) {
+        return this;
+    }
+}