LambdaGMad is a tool used to create and extract Garry's Mod workshop addon packages (.gma files). It is a fork of Whisperity's SharpGMad that aims to make the program more usable with modern versions of GMad.
This is the main feature and reason for LambdaGMad's existence. While gmad can only fully pack a folder into an addon or fully extract an addon to a folder, with LambdaGMad, you can effectively browse a file just as how you would be browsing any other archive (for example, ZIP, RAR or TAR files).
The realtime mode supports on-the-fly adding, removing and updating of files. Using the Export feature, a single file can be exported anywhere on your filesystem and edited with any appropriate editor. When you are done with the changes, a single click of a button will pull these changes into the archive.
Both a graphical and a command-line interface is available for realtime mode.
LambdaGMad [path]
If the program is started with no command-line arguments (or only one, and that is a file path), a graphical interface will load. (You can also drag & drop a file in your file explorer onto LambdaGMad's executable to open it automatically.)
LambdaGMad realtime
Starting LambdaGMad with the realtime argument from the terminal loads its shell. If you are more savvy with using the terminal for quick operation, this mode is for you. Every operation possible in the graphical mode has a counterpart in the terminal (and vice-versa).
Type help in the shell to see a list of available commands.
Optionally, you can specifiy a file as an extra argument to have it loaded initally:
LambdaGMad realtime -file "C:\steam\etc\garrysmod\addons\my_addon_12345.gma"
LambdaGMad is written using the .NET 4.0 framework. This is the only requirement, you can compile the solution with any development environment on any computer compatible with .NET 4.0. This usually means a computer with at least Windows XP Service Pack 3 installed.
Cross-platform operation with Mono is also supported, but is currently untested on Mac and Linux.
The program LambdaGMad is provided "AS IS" without any expressed or implied warranties.
It is a general rule of thumb that you should NEVER start editing files you hadn't made backup of beforehand. The creators refuse to be held liable for any damange caused by the usage of this piece of software.