FernFlower Decompiler Changes
Uses the new Temp Files API. Exceptions are properly handled. File system errors are properly displayed. No more temporary files left behind. `-ren` / rename classes option fixed.
This commit is contained in:
Konloch
parent
96495c8469
commit
b69389cc5f
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@ -24,7 +24,7 @@ import the.bytecode.club.bytecodeviewer.BytecodeViewer;
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import the.bytecode.club.bytecodeviewer.api.ExceptionUI;
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import the.bytecode.club.bytecodeviewer.decompilers.AbstractDecompiler;
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import the.bytecode.club.bytecodeviewer.translation.TranslatedStrings;
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import the.bytecode.club.bytecodeviewer.util.MiscUtils;
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import the.bytecode.club.bytecodeviewer.util.TempFile;
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import java.io.*;
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@ -72,124 +72,116 @@ public class FernFlowerDecompiler extends AbstractDecompiler
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@Override
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public String decompileClassNode(ClassNode cn, byte[] bytes)
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{
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String start = TEMP_DIRECTORY + FS + MiscUtils.getUniqueNameBroken("", ".class");
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String exception = "This decompiler didn't throw an exception - this is probably a BCV logical bug";
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final File tempClass = new File(start + ".class");
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String exception = "";
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try (FileOutputStream fos = new FileOutputStream(tempClass))
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try
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{
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fos.write(bytes);
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final TempFile tempFile = TempFile.createTemporaryFile(true, ".class");
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final File tempClassFile = tempFile.createFileFromExtension(false, false, ".class");
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tempFile.setParent(new File(TEMP_DIRECTORY));
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File tempOutputJavaFile = tempFile.createFileFromExtension(false, true, ".java");
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//File tempOutputJavaFile = new File(TEMP_DIRECTORY, tempClassFile.getName().substring(0, tempClassFile.getName().length()-6) + ".java");
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try (FileOutputStream fos = new FileOutputStream(tempClassFile))
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{
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fos.write(bytes);
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}
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if (LAUNCH_DECOMPILERS_IN_NEW_PROCESS)
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{
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/*try
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{
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BytecodeViewer.sm.pauseBlocking();
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ProcessBuilder pb = new ProcessBuilder(ArrayUtils.addAll(
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new String[]{ExternalResources.getSingleton().getJavaCommand(true), "-jar", ExternalResources.getSingleton().findLibrary("fernflower")},
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generateMainMethod(tempClass.getAbsolutePath(),
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new File(tempDirectory).getAbsolutePath())
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));
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Process p = pb.start();
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BytecodeViewer.createdProcesses.add(p);
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p.waitFor();
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} catch (Exception e) {
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BytecodeViewer.handleException(e);
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} finally {
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BytecodeViewer.sm.resumeBlocking();
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}*/
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}
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else
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{
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org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler.main(generateMainMethod(tempClassFile.getAbsolutePath(), new File(TEMP_DIRECTORY).getAbsolutePath()));
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}
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tempClassFile.delete();
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//if rename is enabled the file name will be the actual class name
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if (BytecodeViewer.viewer.ren.isSelected())
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{
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int indexOfLastPackage = cn.name.lastIndexOf('/');
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String classNameNoPackages = indexOfLastPackage < 0 ? cn.name : cn.name.substring(indexOfLastPackage);
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tempOutputJavaFile = new File(tempFile.getParent(), classNameNoPackages + ".java");
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tempFile.markAsCreatedFile(tempOutputJavaFile);
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}
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//if the output file is found, read it
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if (tempOutputJavaFile.exists())
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{
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String s = DiskReader.loadAsString(tempOutputJavaFile.getAbsolutePath());
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//cleanup temp files
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tempFile.delete();
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return s;
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}
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else
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{
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exception = "BCV Error: " + tempOutputJavaFile.getAbsolutePath() + " does not exist.";
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}
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}
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catch (IOException e)
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catch (Exception e)
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{
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StringWriter exceptionWriter = new StringWriter();
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e.printStackTrace(new PrintWriter(exceptionWriter));
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e.printStackTrace();
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exception = exceptionWriter.toString();
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exception += NL + NL + exceptionWriter;
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}
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if (LAUNCH_DECOMPILERS_IN_NEW_PROCESS)
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{
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/*try
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{
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BytecodeViewer.sm.pauseBlocking();
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ProcessBuilder pb = new ProcessBuilder(ArrayUtils.addAll(
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new String[]{ExternalResources.getSingleton().getJavaCommand(true), "-jar", ExternalResources.getSingleton().findLibrary("fernflower")},
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generateMainMethod(tempClass.getAbsolutePath(),
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new File(tempDirectory).getAbsolutePath())
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));
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Process p = pb.start();
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BytecodeViewer.createdProcesses.add(p);
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p.waitFor();
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} catch (Exception e) {
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BytecodeViewer.handleException(e);
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} finally {
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BytecodeViewer.sm.resumeBlocking();
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}*/
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}
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else
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{
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try
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{
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org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler.main(generateMainMethod(tempClass.getAbsolutePath(), new File(TEMP_DIRECTORY).getAbsolutePath()));
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}
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catch (Throwable e)
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{
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StringWriter exceptionWriter = new StringWriter();
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e.printStackTrace(new PrintWriter(exceptionWriter));
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e.printStackTrace();
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exception = exceptionWriter.toString();
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}
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}
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tempClass.delete();
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String javaDir = start;
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if (BytecodeViewer.viewer.ren.isSelected())
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{
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javaDir = TEMP_DIRECTORY + "class_0";
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}
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final File outputJava = new File(javaDir + ".java");
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if (outputJava.exists())
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{
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String s;
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try
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{
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s = DiskReader.loadAsString(outputJava.getAbsolutePath());
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outputJava.delete();
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return s;
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}
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catch (Exception e)
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{
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StringWriter exceptionWriter = new StringWriter();
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e.printStackTrace(new PrintWriter(exceptionWriter));
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e.printStackTrace();
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exception += NL + NL + exceptionWriter;
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}
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}
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return FERNFLOWER + " " + ERROR + "! " + ExceptionUI.SEND_STACKTRACE_TO + NL + NL + TranslatedStrings.SUGGESTED_FIX_DECOMPILER_ERROR + NL + NL + exception;
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return FERNFLOWER + " " + ERROR + "! " + ExceptionUI.SEND_STACKTRACE_TO + NL + NL
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+ TranslatedStrings.SUGGESTED_FIX_DECOMPILER_ERROR + NL + NL + exception;
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}
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private String[] generateMainMethod(String className, String folder)
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{
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return new String[]{"-rbr=" + r(BytecodeViewer.viewer.rbr.isSelected()),
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"-rsy=" + r(BytecodeViewer.viewer.rsy.isSelected()),
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"-din=" + r(BytecodeViewer.viewer.din.isSelected()),
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"-dc4=" + r(BytecodeViewer.viewer.dc4.isSelected()),
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"-das=" + r(BytecodeViewer.viewer.das.isSelected()),
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"-hes=" + r(BytecodeViewer.viewer.hes.isSelected()),
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"-hdc=" + r(BytecodeViewer.viewer.hdc.isSelected()),
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"-dgs=" + r(BytecodeViewer.viewer.dgs.isSelected()),
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"-ner=" + r(BytecodeViewer.viewer.ner.isSelected()),
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"-den=" + r(BytecodeViewer.viewer.den.isSelected()),
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"-rgn=" + r(BytecodeViewer.viewer.rgn.isSelected()),
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"-bto=" + r(BytecodeViewer.viewer.bto.isSelected()),
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"-nns=" + r(BytecodeViewer.viewer.nns.isSelected()),
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"-uto=" + r(BytecodeViewer.viewer.uto.isSelected()),
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"-udv=" + r(BytecodeViewer.viewer.udv.isSelected()),
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"-rer=" + r(BytecodeViewer.viewer.rer.isSelected()),
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"-fdi=" + r(BytecodeViewer.viewer.fdi.isSelected()),
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"-asc=" + r(BytecodeViewer.viewer.asc.isSelected()),
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"-ren=" + r(BytecodeViewer.viewer.ren.isSelected()),
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className, folder};
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return new String[]
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{
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"-rbr=" + ffOnValue(BytecodeViewer.viewer.rbr.isSelected()),
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"-rsy=" + ffOnValue(BytecodeViewer.viewer.rsy.isSelected()),
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"-din=" + ffOnValue(BytecodeViewer.viewer.din.isSelected()),
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"-dc4=" + ffOnValue(BytecodeViewer.viewer.dc4.isSelected()),
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"-das=" + ffOnValue(BytecodeViewer.viewer.das.isSelected()),
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"-hes=" + ffOnValue(BytecodeViewer.viewer.hes.isSelected()),
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"-hdc=" + ffOnValue(BytecodeViewer.viewer.hdc.isSelected()),
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"-dgs=" + ffOnValue(BytecodeViewer.viewer.dgs.isSelected()),
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"-ner=" + ffOnValue(BytecodeViewer.viewer.ner.isSelected()),
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"-den=" + ffOnValue(BytecodeViewer.viewer.den.isSelected()),
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"-rgn=" + ffOnValue(BytecodeViewer.viewer.rgn.isSelected()),
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"-bto=" + ffOnValue(BytecodeViewer.viewer.bto.isSelected()),
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"-nns=" + ffOnValue(BytecodeViewer.viewer.nns.isSelected()),
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"-uto=" + ffOnValue(BytecodeViewer.viewer.uto.isSelected()),
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"-udv=" + ffOnValue(BytecodeViewer.viewer.udv.isSelected()),
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"-rer=" + ffOnValue(BytecodeViewer.viewer.rer.isSelected()),
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"-fdi=" + ffOnValue(BytecodeViewer.viewer.fdi.isSelected()),
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"-asc=" + ffOnValue(BytecodeViewer.viewer.asc.isSelected()),
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"-ren=" + ffOnValue(BytecodeViewer.viewer.ren.isSelected()),
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className, folder
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};
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}
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private String r(boolean b)
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private String ffOnValue(boolean b)
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{
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if (b)
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{
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return "1";
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}
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else
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{
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return "0";
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}
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}
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}
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