Defining a Charset through Enums.

[frozenLake]

Is your feature request related to a problem? Please describe.
Currently, without modifying Java code, it is impossible to create a custom charset. While Java does have a number of existing Charsets, I am presently dealing with a program that uses a custom charset. Right now, I am using arrays of a custom "Text" enum, but this is rather clunky, and fails at visualization.

Describe the solution you'd like
I would like to be able to import an enum as a charset, or set the display of enums into a string like format.

Describe alternatives you've considered
Maybe formatting for charset_info.xml could be expanded to actually define a custom charset? Admittingly, this might be possible, but given the code, it does not appear to be the case.

Additional context
I have already searched through existing issues, but one only seems to lead to importing java's StandardCharsets, while the other blindly leads to charset_info.xml, without any context as to how this is useful for the current issue.

[GMMan]

From the looks of it, maybe you can implement a new Charset and CharsetProvider and add it to charset_info.xml. Not sure if editing the XML is even necessary because it seems to add charsets discovered from the JVM, unless the char size is multi-byte. I'll be trying this out later.

[GMMan]

For the basic case of single-byte character sets, it is pretty simple. All you have to do is build a .jar with your CharsetProvider and Charset and drop it into Ghidra's Ghidra/patch directory. Here's a sample project demonstrating custom CharsetProvider and Charset. There are surely better implementations, but this should do in a pinch. After you drop the .jar into Ghidra, you can right click on a string, select Data -> Settings... or Data -> Default Settings..., and pick your new encoding from the Charset list.

[dev747368]

In general, the example/custom charset that @GMMan linked seems like the right direction to take. I'm going to mark the original request as out of scope and close.