Init

.gitignore

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+/.idea
+/out

README.md

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+# java-decompiler-plugin-cfr
+基于[CFR](http://www.benf.org/other/cfr/)后端的，用于[IntelliJ IDEA](https://www.jetbrains.com/idea/)的反编译插件。
+
+## 已知的问题
+与文本编辑器的Parser系统似乎有些不兼容，右下角会有报错提示，但是可以不用理会。
+
+## 为什么做这个
+自带的反编译插件后端有非常多的错误，这个虽然也不完美，但更加强力，可以用来对付原本无法反编译的字节码。

java-decompiler-plugin-cfr.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PLUGIN_MODULE" version="4">
+  <component name="DevKit.ModuleBuildProperties" url="file://$MODULE_DIR$/resources/META-INF/plugin.xml" />
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="cfr_0_120" level="project" />
+  </component>
+</module>

resources/META-INF/plugin.xml

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+<idea-plugin>
+    <id>com.i5mc.idea.decompiler.cfr</id>
+    <name>CFR Decompiler</name>
+    <version>1.0</version>
+    <vendor email="[email protected]" url="http://www.i5mc.com">i5mc</vendor>
+
+    <description>
+        The plugin decompile .class with CFR.
+        http://www.benf.org/other/cfr/
+    </description>
+
+    <change-notes>
+        - 2017-03-08 INIT
+    </change-notes>
+
+    <idea-version since-build="145.0"/>
+
+    <extensions defaultExtensionNs="com.intellij">
+        <psi.classFileDecompiler implementation="com.i5mc.idea.decompiler.MyDecompiler"/>
+    </extensions>
+</idea-plugin>

src/com/i5mc/idea/decompiler/Impl.java

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+package com.i5mc.idea.decompiler;
+
+import org.benf.cfr.reader.PluginRunner;
+
+/**
+ * Created on 17-3-8.
+ */
+public interface Impl {
+
+    String decompile(String path);
+
+    static String fuck(String path) {
+        PluginRunner r = new PluginRunner();
+        r.addJarPath(path);
+        return r.getDecompilationFor(path);
+    }
+
+    static String clazz(String path) {
+        int i = path.lastIndexOf("!/");// filesystem path can contain ! but java can not
+        if (i == -1) throw new IllegalArgumentException();
+        PluginRunner r = new PluginRunner();
+        String head = path.substring(0, i);
+        r.addJarPath(head);
+        String tail = path.substring(i + 2, path.length() - 6);
+        return r.getDecompilationFor(tail);
+    }
+
+    enum Protocol {
+
+        FILE(Impl::fuck),
+        JAR(Impl::clazz);
+
+        private final Impl impl;
+
+        Protocol(Impl impl) {
+            this.impl = impl;
+        }
+    }
+
+    static String decompile(String protocol, String path) {
+        try {
+            return Protocol.valueOf(protocol.toUpperCase()).impl.decompile(path);
+        } catch (Exception ignore) {
+        }
+        return "Plz feed back! (" + protocol + "|" + path + ")";
+    }
+
+}

src/com/i5mc/idea/decompiler/MyDecompiler.kt

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+package com.i5mc.idea.decompiler
+
+import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.psi.PsiJavaModule
+import com.intellij.psi.PsiPackage
+import com.intellij.psi.compiled.ClassFileDecompilers
+import com.intellij.psi.impl.compiled.ClsFileImpl
+
+class MyDecompiler : ClassFileDecompilers.Light() {
+
+    override fun accepts(input: VirtualFile): Boolean = true
+
+    override fun getText(input: VirtualFile): CharSequence {
+        if (PsiPackage.PACKAGE_INFO_CLS_FILE == input.name || PsiJavaModule.MODULE_INFO_CLS_FILE == input.name) {
+            return ClsFileImpl.decompile(input)
+        }
+        return Impl.decompile(input.fileSystem.protocol, input.path)
+    }
+
+}