TNS>LUA Converter

[Munchor]

I just thought a bit about it and I'm pretty sure it is possible to convert TNS files to the original LUA code. Afterall, we have programs that do the opposite.

I gave it a try and managed to do it. However, I can't particularly claim it *always* works. I think it works if one didn't use TI's Tools to create it. If one used third-party tools then it works (or so I believe). Nevertheless, it's a pretty useful tool, coded in Python.

It basically opens a TNS file and creates a new text file with the Lua Code.

Here's how it is used:

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1 2	python tns2lua.py MyFile.tns MyCode.txt

Replace MyFile.tns and MyCode.txt with the name of the TNS file you want to decode and the text file you want the code to be saved in respectively.

Attached is a ZIP Archive with a ReadMe and the program.

[JosJuice]

Nice! I don't think can test it (as I don't have any .tns files, and I forgot to install Python on this computer), but I hope that it will be useful for others. Does this only work on 3.0.1-only files, or does it also support files that support 3.0.2?

[Lionel Debroux]

I think it works if one didn't use TI's Tools to create it. If one used third-party tools then it works (or so I believe).

Exactly, so:

Does this only work on 3.0.1-only files, or does it also support files that support 3.0.2?

It works only on 3.0.1-only files.

[JosJuice]

Ah, okay. I guess the 0D compression/encryption is quite tricky...

[Lionel Debroux]

The nasty bit in there is TI's proprietary and patented XML compression.

Spoiler for Hidden:

At the end of April, I coerced Phoenix 1.7.2741 CAS into producing a file that, after some manual fiddling, can be uncompressed by a standard ZIP tool. IOW, it's not encrypted. But the content of the file is not directly usable, due to TI's proprietary XML compression.

[Munchor]

Yes, you're right, after further testing I noticed it can decode all TNS files made using Lua for OS 3.0.1. I also understand why (0D Compression for OS 3.0.2).

Either way, should I upload this to Omnimaga Downloads and TiCalc.org Archives?

[apcalc]

This looks like it could come in handy!  Excellent work!

[Jonius7]

Any updates? Necroposting.

[Jim Bauwens]

Sadly enough there isn't a easy way for >3.0.1 files.
What I do is run it in nspire emu, and dump the entire memory of the process using gcore (In Linux).
Weird, but ok enough for me

[adriweb]

Well, now, there are several ways to do it  :
- Using a memory dumper and extract what you want from nspire_emu
- Using any Clipboard dumper while having copied a Lua widget from within the computer software. (levak made a little software for that, on Windows)
- Using the official Lua SDK (which will be released "soon" (?) ), from which you'll be able to directly edit the lua code from within the .tns file, obviously.

[Jonius7]

You can kinda do that with Oclua but in a roundabout fashion. Good to see.

[Jonius7]

Oh, totally forgot to ask.
I installed python but don't quite get the instructions, this line in particular:

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1	Also note that in order to do this you need Python 2.6 or Python 2.7 installed in your computer and they need to be in the terminal path.

I had the tns file in the same directory as the .py file, however from the instructions, it seems like I need to have the Python install files in the same directory too!
I suspected this when I saw that the command line had "python" in it

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1	python tns2lua.py MyFile.tns MyFile.txt

Any help on this?

Also I created a batch file for this for ease of use:

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1 2 3 4

@echo off set /p tnsfile= Type the tns filename (without extension): set /p txtfile= Type the txt filename (without extension): python tns2lua.py %tnsfile%.tns %txtfile%.txt

Though it didn't seem to work.
Help Please

[adriweb]

You better use Luna to create .tns file, that any other third-party tool, since Luna is the only one generating working file for OS >= 3.0.2.

Tutorials on how to use it are everywhere, but basically :   luna.exe source.lua output.tns


EDIT : Oh wait nevermind I think I read your post wrong.....

[Jonius7]

You better use Luna to create .tns file, that any other third-party tool, since Luna is the only one generating working file for OS >= 3.0.2.

Tutorials on how to use it are everywhere, but basically :   luna.exe source.lua output.tns


EDIT : Oh wait nevermind I think I read your post wrong.....

No no, adriweb

On my other topic http://www.omnimaga.org/index.php?topic=13081.msg240231#msg240231 I mention about Luna and stuff.

And, Luna is LUA -> TNS
But Ephan's python script is TNS -> LUA
jimbauwens did mention some ways to get the source code from the tns but I'm not sure how they work.
Also I have some suspicions that TNS>LUA Converter may not work on OS >=3.0.2 files anymore, and this was created before OS 3.0.2
Still I would like to know how to run this thing...

[Deep Thought]

If you're using Windows, add the Python install directory to your PATH environment variable. See http://docs.python.org/using/windows.html#excursus-setting-environment-variables for more information. And no, it won't work with TNS files for OS 3.0.2 and above. (By the way, BBify can also convert OS 3.0.1 TNS files to Lua source -- sorry for the thread hijack, but I thought it was relevant.)