Rewrite the r2jadx plugin into r2js

* nodejs code was broken because syspipe was no longer compatible with latest node
* This is very experimental

r2jadx/Attic/Makefile

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+R2PM_BINDIR=$(shell r2pm -H R2PM_BINDIR)
+
+all: node_modules
+
+node_modules:
+	mkdir -p node_modules
+	npm i
+
+install:
+	ln -fs "$(shell pwd)"/r2jadx.js "$(R2PM_BINDIR)"/r2jadx
+
+uninstall:
+	rm -f "$(R2PM_BINDIR)"/r2jadx
+
+test:
+	r2 -A -i ./r2jadx.js /tmp/classes.dex
+
+indent:
+	node_modules/.bin/semistandard --fix *.js

r2jadx/Attic/README.md

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+r2jadx
+======
+
+Jadx is decompiles Class and Dex files into Java source code.
+The r2jadx project aims to integrate this decompiler into r2.
+
+This project is still WIP, I focus on DEX support for now, so
+feel free to report issues or submit improvements/fixes to
+get more information from the jadx json files into r2!
+
+Features:
+
+* Show plaintext jadx decompilation results from r2
+* Cache decompilation results in disk for fast interactions
+* Associate address-to-line (and fileline-to-address)
+* Experimental integration into `pdc`
+* Supports low level and high level decompilations
+
+Low level have some benefits compared to High Level decompilation
+
+* Output comparable to `r2dec`
+* Works even on obfuscated code
+* Better match with assembly code (looks nice with decompiler graphs)
+
+Author
+------
+
+--pancake @ 2019
+
+Requirements
+------------
+
+In order to use r2jadx you need some recent versions of both:
+
+* r2 >= 3.6
+* jadx >= 1.0.0
+* nodejs >= 10
+
+Installation
+------------
+
+The easiest way to install r2, jadx and r2jadx is via r2pm:
+
+* r2pm -i jadx r2jadx
+
+Once the tool and script are installed you may want to make
+it available via `pdc` inside r2 to get it working in Cutter
+or Panels:
+
+```> e cmd.pdc=!*r2jadx```
+
+Some explanations on this line:
+
+* `cmd.pdc` eval var makes the `pdc` command execute a different program
+* `!*` prefix is an alias for the `#!pipe`
+* `r2jadx` is the r2jadx.js script installed in `PATH`
+* `r2` tweaks the `PATH` envvar to make `r2pm` scripts available into r2
+* Running `pdc?` will do `!*r2jadx -h`, `pdc*` -> `!*r2jadx -r2` ...
+
+Usage
+-----
+
+The first time you run r2jadx it will create a `.d` directory in the same
+place where the loaded `classes.dex` live.
+
+This directory contains two subdirectories with the `json` and `java` outputs
+of the JADX decompilation results.
+
+Those are the command line arguments accepted by r2jadx:
+
+* -r -> import ALL the low level decompilation results into r2 as comments
+* -r2 -> import ALL the high level decompilation results into r2 as comments
+
+To get the function decompilation results:
+
+* -ll -> low level decompilation of the current function
+* -hl -> high level decompilation of the current function (default if no arg)
+
+In addition we can have a full dump of the decompilation
+
+* -ahl -> all functions high-level decompiled results
+* -all -> all functions low-level decompiled results
+* -cat -> `cat` the decompiled java file associated with the current function
+
+--pancake