[tz] What are the interfaces to the TZDB?

[Eliot Lear]

On 09.11.21 15:52, Tom Lane via tz wrote:
> AFAIK, the only way to enumerate the available zones in a typical
> installation is to search the directory tree.  This isn't great,
> not least because it means that non-tzcode code has to know where
> that directory tree is.  It'd be good to support that functionality
> in a more direct fashion.

That's an easy one to solve (finally?  An easy problem?).  That is the C 
equivalent of-

( export TDIR=/usr/share/zoneinfo cd $TDIR; find * -type f -print |egrep 
-v 'VERSION|leapseconds|posixrules|zone.tab' )

where TDIR is defined at build.  Is that an important interface to 
define and standardize?

Eliot



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