This change separates peer implementations from the repository implementation.
localpeer currently is a simple pass-through to localrepository, except for
legacy calls, which have already been removed from localpeer. This ensures that
the local client code only uses the most modern peer API when talking to local
repos.
Peers have a .local() method which returns either None or the underlying
localrepository (or descendant thereof). Repos have a .peer() method to return
a freshly constructed localpeer. The latter is used by hg.peer(), and also to
allow folks to pass either a peer or a repo to some generic helper methods.
We might want to get rid of .peer() eventually.
The only user of locallegacypeer is debugdiscovery, which uses it to pose as a
pre-setdiscovery client. But we decided to leave the old API defined in
locallegacypeer for clarity and maybe for other uses in the future.
It might be nice to actually define the peer API directly in peer.py as stub
methods. One problem there is, however, that localpeer implements
lock/addchangegroup, whereas the true remote peers implement unbundle.
It might be desireable to get rid of this distinction eventually.
This is essentially a copy of largefile's override of archive() in the
archival class, adapted for overriding hgsubrepo's archive(). That
means decoding isn't taken into consideration, nor is .hg_archival.txt
generated (the same goes for regular subrepos). Unlike subrepos, but
consistent with largefile's handling of the top repo, ui.progress() is
*not* called. This should probably be refactored at some point, but
at least this generates the archives properly for now. Previously,
the standins were ignored and the largefiles were archived only for
the top level repo.
Long term, it would probably be most desirable to figure out how to
tweak archival's archive() if necessary such that largefiles doesn't
need to override it completely just to special case the translating of
standins to the real files. Largefiles will already return a context
with the true largefiles instead of the standins if lfilesrepo's
lfstatus is True- perhaps this can be leveraged?
Summary and commit use dirty() to check the status of a subrepository,
so this overrides dirty() in the subrepo in the same manner as
status() to check the large files instead of their standins.
Previously, if only a large file was changed in a subrepo, summary in
the top level repo would not report the subrepo was dirty and commit
-S would report nothing changed. If any type of file was changed in
the top repo and only a large file in the subrepo, commit -S would not
commit the changes to the subrepo.
Wrapping the status command will only invoke overridestatus() and set
the lfstatus field for the top level repository. Wrapping the status
function is required to set the field on child repositories.
Previously, status -S would report large files in a subrepo as '?'
regardless of their actual states, and was inconsistent with what
status would report from within that subrepo.
This is a fix to largefiles so that 'hg cat' will work correctly when a
largefile is specified.
As per discussion on Issue 3352:
1) The file will be printed regardless if it is binary or large.
2) The file is downloaded if it is not readily available (not found in
the system cache), so that it can be printed. If the download fails,
then we abort.
Previously, we would do a full working directory walk including
unknown files to perform a merge. In many cases, this was painful
because unknown files greatly outnumbered tracked files and generally
had no useful effect on the merge.
Here we instead wait until we find a file in the destination that's
not tracked locally and detect if it exists and is not ignored. This
is usually cheaper but can be -more- expensive in the case where we're
adding a huge number of files. On the other hand, the cost of statting
the new files should be dwarfed by the cost of eventually writing
them.
In this version, case collisions are detected implicitly by
os.path.exists and wctx[f] lookup.
The largefiles extension prevents users from adding a normal file
named 'foo' if there is already a largefile with the same name.
However, there was a loop-hole: when merging, it was possible to bring
in a normal file named 'foo' while also having a '.hglf/foo' file.
This patch fixes this by extending the manifest merge to deal with
these kinds of conflicts. If there is a normal file 'foo' in the
working copy, and the other parent brings in a '.hglf/foo' file, then
the user will be prompted to keep the normal file or the largefile.
Likewise for the symmetric case where a normal file is brought in via
the second parent. The prompt looks like this:
$ hg merge
foo has been turned into a largefile
use (l)argefile or keep as (n)ormal file?
After the merge, either the '.hglf/foo' file or the 'foo' file will
have been deleted. This would cause status to return output like:
$ hg status
M foo
R foo
To fix this, the lfiles_repo.status method is changed so that a
removed normal file isn't shown if there is largefile with the same
name, and vice versa for largefiles.
- fix some ungrammatical/unclear/incorrect comments/docstrings
- rewrite some really unclear comments/docstrings
- make formatting/style more consistent with the rest of Mercurial
(lowercase without period unless it's really multiple sentences)
- wrap to 75 columns
- always say "largefile(s)", not "lfile(s)" (or "big files")
- one space between sentences, not two
