Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/statichttprepo.py @ 5378:8a2915f57dfc
convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
---|---|
date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | 639935f2e63a |
children |
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# statichttprepo.py - simple http repository class for mercurial # # This provides read-only repo access to repositories exported via static http # # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. from i18n import _ import changelog, filelog, httprangereader import repo, localrepo, manifest, os, urllib, urllib2, util class rangereader(httprangereader.httprangereader): def read(self, size=None): try: return httprangereader.httprangereader.read(self, size) except urllib2.HTTPError, inst: raise IOError(None, inst) except urllib2.URLError, inst: raise IOError(None, inst.reason[1]) def opener(base): """return a function that opens files over http""" p = base def o(path, mode="r"): f = "/".join((p, urllib.quote(path))) return rangereader(f) return o class statichttprepository(localrepo.localrepository): def __init__(self, ui, path): self._url = path self.ui = ui self.path = path.rstrip('/') + "/.hg" self.opener = opener(self.path) # find requirements try: requirements = self.opener("requires").read().splitlines() except IOError: requirements = [] # check them for r in requirements: if r not in self.supported: raise repo.RepoError(_("requirement '%s' not supported") % r) # setup store if "store" in requirements: self.encodefn = util.encodefilename self.decodefn = util.decodefilename self.spath = self.path + "/store" else: self.encodefn = lambda x: x self.decodefn = lambda x: x self.spath = self.path self.sopener = util.encodedopener(opener(self.spath), self.encodefn) self.manifest = manifest.manifest(self.sopener) self.changelog = changelog.changelog(self.sopener) self.tagscache = None self.nodetagscache = None self.encodepats = None self.decodepats = None def url(self): return 'static-' + self._url def dev(self): return -1 def local(self): return False def instance(ui, path, create): if create: raise util.Abort(_('cannot create new static-http repository')) return statichttprepository(ui, path[7:])