Mercurial > hg
view mercurial/filelog.py @ 38808:d99083996398
exchange: move simple narrow changegroup generation from extension
The narrow extension completely replaced the function generating the
changegroup part when a narrow changegroup was requested. Previous
commits have taught the in-core changegroup code how to filter files
based on a matcher. This commit teaches the in-core bundle2 part
generation code to construct a matcher based on arguments. It
will also emit a bundle2 part describing the narrow spec.
I believe the changegroup part generation code in the narrow extension
is now limited to ellipsis serving mode. i.e. core is now capable
of narrow changegroup generation when ellipsis mode is disabled.
Differential Revision: https://phab.mercurial-scm.org/D4014
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 28 Jul 2018 17:42:36 -0700 |
parents | 93777d16a25d |
children | b41d023a412a |
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# filelog.py - file history class for mercurial # # 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 version 2 or any later version. from __future__ import absolute_import from . import ( error, repository, revlog, ) from .utils import ( interfaceutil, ) @interfaceutil.implementer(repository.ifilestorage) class filelog(object): def __init__(self, opener, path): self._revlog = revlog.revlog(opener, '/'.join(('data', path + '.i')), censorable=True) # full name of the user visible file, relative to the repository root self.filename = path self.index = self._revlog.index self.version = self._revlog.version self.storedeltachains = self._revlog.storedeltachains self._generaldelta = self._revlog._generaldelta def __len__(self): return len(self._revlog) def __iter__(self): return self._revlog.__iter__() def revs(self, start=0, stop=None): return self._revlog.revs(start=start, stop=stop) def parents(self, node): return self._revlog.parents(node) def parentrevs(self, rev): return self._revlog.parentrevs(rev) def rev(self, node): return self._revlog.rev(node) def node(self, rev): return self._revlog.node(rev) def lookup(self, node): return self._revlog.lookup(node) def linkrev(self, rev): return self._revlog.linkrev(rev) def flags(self, rev): return self._revlog.flags(rev) def commonancestorsheads(self, node1, node2): return self._revlog.commonancestorsheads(node1, node2) def descendants(self, revs): return self._revlog.descendants(revs) def headrevs(self): return self._revlog.headrevs() def heads(self, start=None, stop=None): return self._revlog.heads(start, stop) def children(self, node): return self._revlog.children(node) def deltaparent(self, rev): return self._revlog.deltaparent(rev) def candelta(self, baserev, rev): return self._revlog.candelta(baserev, rev) def iscensored(self, rev): return self._revlog.iscensored(rev) def rawsize(self, rev): return self._revlog.rawsize(rev) def checkhash(self, text, node, p1=None, p2=None, rev=None): return self._revlog.checkhash(text, node, p1=p1, p2=p2, rev=rev) def revision(self, node, _df=None, raw=False): return self._revlog.revision(node, _df=_df, raw=raw) def revdiff(self, rev1, rev2): return self._revlog.revdiff(rev1, rev2) def addrevision(self, revisiondata, transaction, linkrev, p1, p2, node=None, flags=revlog.REVIDX_DEFAULT_FLAGS, cachedelta=None): return self._revlog.addrevision(revisiondata, transaction, linkrev, p1, p2, node=node, flags=flags, cachedelta=cachedelta) def addgroup(self, deltas, linkmapper, transaction, addrevisioncb=None): return self._revlog.addgroup(deltas, linkmapper, transaction, addrevisioncb=addrevisioncb) def getstrippoint(self, minlink): return self._revlog.getstrippoint(minlink) def strip(self, minlink, transaction): return self._revlog.strip(minlink, transaction) def files(self): return self._revlog.files() def checksize(self): return self._revlog.checksize() def read(self, node): t = self.revision(node) if not t.startswith('\1\n'): return t s = t.index('\1\n', 2) return t[s + 2:] def add(self, text, meta, transaction, link, p1=None, p2=None): if meta or text.startswith('\1\n'): text = revlog.packmeta(meta, text) return self.addrevision(text, transaction, link, p1, p2) def renamed(self, node): if self.parents(node)[0] != revlog.nullid: return False t = self.revision(node) m = revlog.parsemeta(t)[0] # copy and copyrev occur in pairs. In rare cases due to bugs, # one can occur without the other. if m and "copy" in m and "copyrev" in m: return (m["copy"], revlog.bin(m["copyrev"])) return False def size(self, rev): """return the size of a given revision""" # for revisions with renames, we have to go the slow way node = self.node(rev) if self.renamed(node): return len(self.read(node)) if self.iscensored(rev): return 0 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) return self._revlog.size(rev) def cmp(self, node, text): """compare text with a given file revision returns True if text is different than what is stored. """ t = text if text.startswith('\1\n'): t = '\1\n\1\n' + text samehashes = not self._revlog.cmp(node, t) if samehashes: return False # censored files compare against the empty file if self.iscensored(self.rev(node)): return text != '' # renaming a file produces a different hash, even if the data # remains unchanged. Check if it's the case (slow): if self.renamed(node): t2 = self.read(node) return t2 != text return True @property def filename(self): return self._revlog.filename @filename.setter def filename(self, value): self._revlog.filename = value # TODO these aren't part of the interface and aren't internal methods. # Callers should be fixed to not use them. @property def indexfile(self): return self._revlog.indexfile @indexfile.setter def indexfile(self, value): self._revlog.indexfile = value @property def datafile(self): return self._revlog.datafile @property def opener(self): return self._revlog.opener @property def _lazydeltabase(self): return self._revlog._lazydeltabase @_lazydeltabase.setter def _lazydeltabase(self, value): self._revlog._lazydeltabase = value @property def _deltabothparents(self): return self._revlog._deltabothparents @_deltabothparents.setter def _deltabothparents(self, value): self._revlog._deltabothparents = value @property def _inline(self): return self._revlog._inline @property def _withsparseread(self): return getattr(self._revlog, '_withsparseread', False) @property def _srmingapsize(self): return self._revlog._srmingapsize @property def _srdensitythreshold(self): return self._revlog._srdensitythreshold def _deltachain(self, rev, stoprev=None): return self._revlog._deltachain(rev, stoprev) def chainbase(self, rev): return self._revlog.chainbase(rev) def chainlen(self, rev): return self._revlog.chainlen(rev) def clone(self, tr, destrevlog, **kwargs): if not isinstance(destrevlog, filelog): raise error.ProgrammingError('expected filelog to clone()') return self._revlog.clone(tr, destrevlog._revlog, **kwargs) def start(self, rev): return self._revlog.start(rev) def end(self, rev): return self._revlog.end(rev) def length(self, rev): return self._revlog.length(rev) def compress(self, data): return self._revlog.compress(data) def _addrevision(self, *args, **kwargs): return self._revlog._addrevision(*args, **kwargs)