Locale errors

[gustavs-gutmanis]

Hi @rlanvin,

Seems like it's impossible to use the RRule::humanReadable() method if the \Locale doesn't exist, or if the locale is wrong. There are some cases where the default Locale is en_US_POSIX which in turn triggers an exception in RRule::i18nLoad() line 2022. Would it be possible to fallback to en if the locale isn't set or isn't supported?

I could make a PR for it if you'd like, just wondering if that's something you see as fitting in this case?

[rlanvin]

Hi,

Sure, a PR is always appreciated, so if you feel like it feel free. Here are my comments:

• Locale is part of the intl extension. I had intended this extension to be optional, so it definitely should not fail if intl is not loaded... I suggest you get the locale from the old fashioned setlocale() method when intl is not loaded.
• I didn't know that en_US_POSIX was a valid locale, so yes, the regexp in line 2022 should probably be updated. I think it some cases the old setlocale() can also return strange locales like C I think, so keep that in mind.
• Having a fallback locale if the locale is not set for some reason a good idea, though I think Locale or setlocale will always return something.
• Having a fallback locale if the locale doesn't exist is also a good idea, but I'm wondering if hardcoding en is a good idea. Maybe this could be an option of humanReadable (with en as default, so I can select another fallback language if necessary, and null or false meaning "no fallback, throw an exception if you can't find the locale")

Also, please remember to add (or update) a test that demonstrate the bugs in the PR. You should also update the CHANGELOG file.

[gustavs-gutmanis]

Ok, thanks for the input - very good points.
I'll update the tests, but I wonder how could I test Locale class not existing.

[gustavs-gutmanis]

I have a question - what should happen if there is no translation file for a given locale?
Right now it throws an exception saying that it couldn't load translations for said locale.
Maybe it should try to use the $fallbackLocale, if any were to be given?

[rlanvin]

Fixed by PR #11