i never worked with Lua and want to know if it's possible to download an .exe File and saving to Disk.
Thanks for the help.
Lua do not support download itself, it must rely on extenal liabraries like luasocket. you can refer the answer download file by url in lua
Related
I've been trying to edit the lua files for the game victor vran (made by developers of the tropico series) but when i tried to decompile the files i'd get back errors. So i opened up some of the files in both notepad++ and luaedit, and noticed the first string of every file was lz4 which I automatically associated with compression. After a quick google I found the lua rocks lz4 module. With that i tried to decompress some files but couldn't really wrap my head arround it.
If anybody could give me some tips to point me in the right direction/tell me where i'm going wrong, or even take a quick look at the files i'll link to below, to give me advice on the matter I'd be greatly appreciatave. I will include 2 types of lua files from the game, ones with the lz4 string and ones without. thank you so much in advance, ifanybody needs more information on the files or the steps i took ask away
.lua files with "LZ4" as first string https://drive.google.com/open?id=0B042ggDJxSmJaTJ2Z1l4RTkzUHc
.lua files without lz4 as first string https://drive.google.com/open?id=0B042ggDJxSmJa2VNcjQxVC1TZ1k
I am working on a problem which requires my system to uncompress .7z files in elixir/erlang.
Is there any such library that can uncompress .7z file in erlang or elixir? Or any method to do the same?
TIA :)
I guess that the best and simplest way for doing it is by running the right system command to uncompress the file.
You can do this using os:cmd/1:
In case you just want to uncompress to the working directory, just run this command:
os:cmd("7za x File.7z").
For more information about how to use 7z in command line see this or this.
Note: You just need to make sure you have the right 7z utility according to your OS.
You might also want to check out this Erlang module as well. http://erlang.org/doc/man/zip.html
I've been trying to load a library into lua file. Sparing the details, as they are not really important, I have tried this many ways.
The final way, and the one I believe to be correct although I still can't get it to work, is to use "package.loadlib". See code:
ed = package.loadlib("Encode_Decode.lua", "luaopen_ed")
print(ed)
But when I run the program I get this error:
Encode_Decode.lua is either not designed to run on Windows or it
contains an error. Try installing the program again using the original
installation media or contact your system administrator or the
software vendor for support.
I know the program runs because I used it internally to test it's encoding and decoding abilities and it worked fine. I'd really prefer not moving the contents of the library over as my main lua file is crowded as it is. I will if I have to though.
Yes it is in the main folder. I've also tried changing the extension of the library file into a .dll, with the same error.
What am I doing wrong?
I apologize in advance if this is a duplicate, I did my best to research this problem as thoroughly as I could. But to be honest it's almost 3 AM and I've been searching for almost an hour.
Stupid beginner mistake, used the wrong syntax.
require("Encode_Decode")
print(dec("bnVs")) --returns "nul"
package.loadlib is used for loading shared libraries; i.e. .dll or .so files. You're passing a .lua file to it, so Windows attempts to load it as a .dll and fails when it can't.
To load Lua source code, you can use dofile. Alternatively, you can use require, which is a bit more complex, but handles loading modules only once and works with both Lua and C modules.
Okey, this is not a core programming question; it is more of a question regarding cgns (CFD general notational system) API.
I've exported a grid/mesh file from ANSYS Fluent (which was first created in Gambit 2.46), and I wrote a very simple Fortran program to open and close it (doing nothing else). To check the file is not corrupt I plotted it in Tecplot.
So, when I compiled using gfortran with the mentioned cgns and ran the program I got this error (as part of cg_error_exit_f())
ADF_Database_Open:File does not exist or is not a HDF5 file
Here is the program
program cavity
include "/usr/include/cgnslib_f.h"
call cg_open_f("Cavity.cgns",CG_MODE_READ,index_file,ier)
!check for error if so exit
if (ier .ne. CG_OK) then
call cg_error_exit_f()
end if
write(*,*)"I kind of opened the file?"
call cg_close_f(index_file,ier)
stop
end program cavity
I'm able to write both structured and unstructured grids in cgns format, without any problem.
I suspect the cgns library I'm using(version 2.5.5 packaged in Fedora 15 and Scientific linux 6.1) is built to support only HDF5, while the exported grid file is written in ADF format.
Any ideas to circumvent this or perhaps adding ADF? Which by the way is not packaged in both the distributions. Any other grid generator which is compatible with cgns version 2.5.5?
I hope I was clear. Any further info required, I would provide.
There is so much that could've gone wrong in here, and I'm afraid you didn't exactly narrow the problem down.
You said you exported a file from Fluent (what kind of a file is it? Be sure!). cg_error_exit_f() gave you an error listed. I'm assuming you have the source of the mentioned routines? In the program you include a cgnslib_f.h file - what's in it? I'm assumming the program compiled without errors of any kind, making this a file format question, not a fortran question.
Again, verify what kind of file Fluent produced.
When I ran into this situation, I discovered the following tools:
hdf2adf
adf2hdf
They are in the cgns-convert package on Ubuntu and are probably available for your distribution as well.
I'm developing a BlackBerry application in which I need to unpack a zip file compressed with PKZIP. The package could have one file in it, or it could have 10; it will vary in each case. I know that the BlackBerry API has native support for GZip and Zlib, although I'm pretty sure that these methods aren't going to be helpful in my case. It doesn't look as if I can extract the individual files using these calls.
I've tried JZlib (http://www.jcraft.com/jzlib/), which compiled fine, but again it doesn't look as if the methods contained therein are going to allow me to pull the individual files.
It appears as if this is possible, as there's an application called Ziplorer (http://www.s4bb.com/software/ziplorer/) that claims to do perform this exact procedure. How they're doing it, however, escapes me.
So here I am after hours of Googling. I'm welcoming any insight into my problem with open arms.
"zip" algorithms are typically offshoots of the Lempel-Ziv-Welch algorithm. They are a fairly efficient stream compression algorithms, but because of how they function, you can't start to decompress at random points in the file, you have to start from the start.
Any product that claims to be able to decompress one file from a zip still has to decompress everything before it in the zip file in order to know how to decrypt the given file, or even, for that matter, where the file is in the archive.
If you can tolerate GPL code in your application, then this library http://jazzme.sourceforge.net/ that might work. However the project (and its parent project http://sourceforge.net/projects/jazzlib/) don't look like they're being developed.