[tz] Proposal: validation text file with releases

Random832 random832 at fastmail.com
Wed Apr 27 22:34:13 UTC 2016

On Wed, Apr 27, 2016, at 12:21, Jon Skeet wrote:
> I'd say those cons are pretty significant - I find it very significantly
> harder to read than the format I've propsed. I'm also confused by your
> "pro" that it doesn't depend on any implementation details, but it really
> *exposes* the implementation details in naming ("isdst" and "gmtoff" for
> example, along with the mysterious huge numeric values).

isdst is standard C. gmtoff is a common extension.

My point is that it doesn't actually parse the internal structures of
the timezone files, it simply calls localtime over and over with
different values, and so can be used even with a radically different
implementation of the C functions, or against POSIX timezone strings,

> The aim is to have a format which is easy and natural to generate on
> *multiple* platforms, so that authors of other code parsing the data can
> validate against it. That would be a *very* unnatural format to generate
> from .NET with either Noda Time or TimeZoneInfo, or from Java 7, Java 8
> or
> Joda Time.

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