Make TIMEZONES map public, so that users may iterate over all timezones.

[siedentop]

I could imagine, that this PR is not implemented in the way you'd prefer. I mostly want to get the conversation started and offer one possible implementation.

For a feature, I thought it would be nice to create an auto-correct dictionary for all known timezones.

So, in this PR I am changing static TIMEZONES to pub static TIMEZONES. On the user side, I am simply creating a list off all timezones like this: chrono_tz::TIMEZONES.keys().map(|x| x.to_string()).collect().

Is this something you would be willing to support? Would you prefer a new function that hid the access to TIMEZONES behind a function?

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Pinging previous authors of the modified file: @quodlibetor @petrosagg

[ritchie46]

This might help.

let timezone = "Africa/Asmara";
timezone.parse::<chrono_tz::Tz>()

[djc]

I'm open to having this, but I'd like to have TIMEZONES be renamed to TIME_ZONES (in a separate commit, please).

[siedentop]

@djc like this, or renaming it everywhere? pub use timezones::TIMEZONES as TIME_ZONES;

EDIT: I just did the right thing, and renamed it everywhere.

[djc]

Thanks for the rename! I'm having some second thoughts as this makes phf part of the public API. How about we wrap the phf::Map in a newtype wrapper that exposes a minimal API (maybe just get() and iter() for now)?

[siedentop]

Sorry for the delay. I've just discovered that TZ_VARIANTS is already public and exported.

Here's what I want to do: chrono_tz::TZ_VARIANTS.iter().map(|x| x.to_string())

So, let's close this PR.