API: Allow IGC file downloads about ogn-web-gateway

[Turbo87]

from my understanding serde is meant more for (de)serialization of generic data (strings, numbers, lists, maps, etc.), but in this case the file has a fixed format, that does not seem to fit very well with using something like serde.

I also tried several of the more fancy parsing libraries but in the end using regex seemed easiest. I noticed though that igc-rs is just using plain string processing, which is probably also good enough.

The other main difference currently is that rust-igc is based on byte arrays, while igc-rs operates on strings. Technically IGC files have to be ASCII, but nobody really cares apparently and there are plenty of files around that have non-ASCII characters. Most seem to be UTF8, but there are definitely also some that use Latin1 instead.

[estk]

I'm looking into this, as you suggested re our email conversation :)

[estk]

Ok, after a bit of consideration, I feel like a good place to start will be to extend https://github.com/Turbo87/rust-igc to also serialize IGC, then depend on that to create the file. How does that approach sound?

[Turbo87]

well, now that you've found the other IGC parser... :D

due to the low-level nature of igc-rs it might be quite a bit easier to use that to write IGC files. I've opened Joey9801/igc-rs#6 to discuss the possibility of adding writing capabilities to that crate.

[estk]

Yeah sounds good, additionally I was wondering why in rust-igc you didn't use serde to do the seralization/deserialization?