[PATCH 1 of 4] localrepo: add _findlocaltags method

[Sean Farley]

Sean Farley <sean.michael.farley at gmail.com> writes:

> # HG changeset patch
> # User Sean Farley <sean.michael.farley at gmail.com>
> # Date 1395964833 18000
> #      Thu Mar 27 19:00:33 2014 -0500
> # Node ID 795f649f5a9fabb7bf05d51bb8a2f82451a80512
> # Parent  dfad9bb23ab49bd461544c1d5fab3318ab637d23
> localrepo: add _findlocaltags method
>
> This method will be used in future patches to allow access to only getting the
> local tags. This will allow us to improve performance to avoid the cost of
> building the tag cache for large repos with many heads.
>
> diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
> --- a/mercurial/localrepo.py
> +++ b/mercurial/localrepo.py
> @@ -603,15 +603,33 @@ class localrepository(object):
>  
>          # Build the return dicts.  Have to re-encode tag names because
>          # the tags module always uses UTF-8 (in order not to lose info
>          # writing to the cache), but the rest of Mercurial wants them in
>          # local encoding.
> +        for (name, (node, hist)) in alltags.iteritems():
> +            if node != nullid:
> +                tags[encoding.tolocal(name)] = node
> +        tags['tip'] = self.changelog.tip()
> +        tagtypes = dict([(encoding.tolocal(name), value)
> +                         for (name, value) in tagtypes.iteritems()])
> +
> +        return (tags, tagtypes)
> +
> +    def _findlocaltags(self):
> +        alltags = {}
> +        tagtypes = {}
> +
> +        tagsmod.readlocaltags(self.ui, self, alltags, tagtypes)
> +
> +        # Build the return dicts.  Have to re-encode tag names because
> +        # the tags module always uses UTF-8 (in order not to lose info
> +        # writing to the cache), but the rest of Mercurial wants them in
> +        # local encoding.
>          tags = {}
>          for (name, (node, hist)) in alltags.iteritems():
>              if node != nullid:
>                  tags[encoding.tolocal(name)] = node
> -        tags['tip'] = self.changelog.tip()
>          tagtypes = dict([(encoding.tolocal(name), value)
>                           for (name, value) in tagtypes.iteritems()])
>          return (tags, tagtypes)
>  
>      def tagtype(self, tagname):

Pierre-Yves mentioned that these functions should have doc strings, so
go ahead and drop this series.