Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/statichttprepo.py @ 5369:7530334bf301
revlog: generate trivial deltas against null revision
To avoid extra memory usage and performance issues with large files,
generate a trivial delta header for deltas against the null revision
rather than calling the usual delta generator.
We append the delta header to meta rather than prepending it to data
to avoid a large allocate and copy.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Wed, 03 Oct 2007 17:17:27 -0500 |
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:])