Support 64-bit integer and/or unsigned 32-bit integer configuration types

[cmcqueen]

It seems that on 32-bit *nix OS, the CFG_INT config type is signed 32-bit. I've got a config type that needs to be 64-bit. I've got another config type that needs to be unsigned 32-bit. I had been using CFG_INT fine on my 64-bit OS (CFG_INT type is evidently signed 64-bit in that case), but it didn't work when I tried to cross-compile for a 32-bit ARM embedded Linux platform.

For the unsigned 32-bit case, I guess I can do a custom validator and some typecasting to make it handle unsigned 32-bit. It would be nice for libconfuse to provide for unsigned 32-bit.

For the 64-bit values, it would be great if libconfuse would add support for 64-bit integer config types.

[troglobit]

Maybe we could model this on top of stdint.h? With CFG_INT remaining a platform/compiler specific int.

• CFG_INT32
• CFG_INT64
• CFG_UINT32
• CFG_UINT64

[cmcqueen]

That sounds good to me. What about 16 and 8 variants?

[troglobit]

Sure, the list could go on, and on, and on ... 😃

[troglobit]

Postponing for a future release.

[chli]

Any update on this ? I need to store a 32-bit unsigned int and my only option at the moment is store it as a string, add a validation function to check that only valid uint32 can be set and do the conversion were appropriate.

[troglobit]

No update. Like most Open Source projects, libConfuse is driven by contributions from its users. Pull requests are welcome.

[bharsaklemukesh975]

Can I work on this?

[troglobit]

@bharsaklemukesh975 Sure, just outline first your ideas for the new API here. There are quite a few things to consider. Maybe have a look at, e.g., https://hyperrealm.github.io/libconfig/libconfig_manual.html for inspiration?

[bharsaklemukesh975]

so we have defines and types with CFG_INT, now we should add to support other integer type like CFG_UINT32, right?
There is also CFG_INT_LIST, do also need to add support for int list?

[troglobit]

Essentially, yes. I'd just like first time contributors to elaborate a bit on their approach before they get a'crackin'