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a3f2ae29d0
Before this patch, "overrides.getoutgoinglfiles()" (called by "overrideoutgoing()" and "overridesummary()") and "lfilesrepo.push()" implement similar logic to get outgoing largefiles separately. This patch centralizes the logic to get outgoing largefiles in "lfutil.getlfilestoupload()". "lfutil.getlfilestoupload()" takes "addfunc" argument, because each callers need different information (and it is useful for enhancement in the future). - "overrides.getoutgoinglfiles()" needs only filenames - "lfilesrepo.push()" needs only hashes of largefiles
391 lines
14 KiB
Python
391 lines
14 KiB
Python
# Copyright 2009-2010 Gregory P. Ward
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# Copyright 2009-2010 Intelerad Medical Systems Incorporated
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# Copyright 2010-2011 Fog Creek Software
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# Copyright 2010-2011 Unity Technologies
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''largefiles utility code: must not import other modules in this package.'''
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import os
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import platform
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import shutil
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import stat
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from mercurial import dirstate, httpconnection, match as match_, util, scmutil
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from mercurial.i18n import _
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from mercurial import node
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shortname = '.hglf'
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shortnameslash = shortname + '/'
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longname = 'largefiles'
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# -- Private worker functions ------------------------------------------
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def getminsize(ui, assumelfiles, opt, default=10):
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lfsize = opt
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if not lfsize and assumelfiles:
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lfsize = ui.config(longname, 'minsize', default=default)
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if lfsize:
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try:
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lfsize = float(lfsize)
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except ValueError:
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raise util.Abort(_('largefiles: size must be number (not %s)\n')
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% lfsize)
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if lfsize is None:
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raise util.Abort(_('minimum size for largefiles must be specified'))
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return lfsize
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def link(src, dest):
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util.makedirs(os.path.dirname(dest))
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try:
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util.oslink(src, dest)
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except OSError:
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# if hardlinks fail, fallback on atomic copy
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dst = util.atomictempfile(dest)
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for chunk in util.filechunkiter(open(src, 'rb')):
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dst.write(chunk)
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dst.close()
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os.chmod(dest, os.stat(src).st_mode)
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def usercachepath(ui, hash):
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path = ui.configpath(longname, 'usercache', None)
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if path:
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path = os.path.join(path, hash)
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else:
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if os.name == 'nt':
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appdata = os.getenv('LOCALAPPDATA', os.getenv('APPDATA'))
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if appdata:
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path = os.path.join(appdata, longname, hash)
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elif platform.system() == 'Darwin':
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home = os.getenv('HOME')
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if home:
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path = os.path.join(home, 'Library', 'Caches',
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longname, hash)
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elif os.name == 'posix':
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path = os.getenv('XDG_CACHE_HOME')
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if path:
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path = os.path.join(path, longname, hash)
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else:
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home = os.getenv('HOME')
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if home:
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path = os.path.join(home, '.cache', longname, hash)
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else:
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raise util.Abort(_('unknown operating system: %s\n') % os.name)
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return path
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def inusercache(ui, hash):
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path = usercachepath(ui, hash)
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return path and os.path.exists(path)
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def findfile(repo, hash):
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if instore(repo, hash):
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repo.ui.note(_('found %s in store\n') % hash)
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return storepath(repo, hash)
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elif inusercache(repo.ui, hash):
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repo.ui.note(_('found %s in system cache\n') % hash)
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path = storepath(repo, hash)
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link(usercachepath(repo.ui, hash), path)
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return path
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return None
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class largefilesdirstate(dirstate.dirstate):
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def __getitem__(self, key):
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return super(largefilesdirstate, self).__getitem__(unixpath(key))
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def normal(self, f):
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return super(largefilesdirstate, self).normal(unixpath(f))
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def remove(self, f):
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return super(largefilesdirstate, self).remove(unixpath(f))
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def add(self, f):
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return super(largefilesdirstate, self).add(unixpath(f))
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def drop(self, f):
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return super(largefilesdirstate, self).drop(unixpath(f))
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def forget(self, f):
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return super(largefilesdirstate, self).forget(unixpath(f))
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def normallookup(self, f):
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return super(largefilesdirstate, self).normallookup(unixpath(f))
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def _ignore(self, f):
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return False
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def openlfdirstate(ui, repo, create=True):
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'''
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Return a dirstate object that tracks largefiles: i.e. its root is
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the repo root, but it is saved in .hg/largefiles/dirstate.
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'''
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lfstoredir = repo.join(longname)
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opener = scmutil.opener(lfstoredir)
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lfdirstate = largefilesdirstate(opener, ui, repo.root,
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repo.dirstate._validate)
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# If the largefiles dirstate does not exist, populate and create
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# it. This ensures that we create it on the first meaningful
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# largefiles operation in a new clone.
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if create and not os.path.exists(os.path.join(lfstoredir, 'dirstate')):
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util.makedirs(lfstoredir)
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matcher = getstandinmatcher(repo)
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for standin in repo.dirstate.walk(matcher, [], False, False):
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lfile = splitstandin(standin)
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lfdirstate.normallookup(lfile)
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return lfdirstate
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def lfdirstatestatus(lfdirstate, repo, rev):
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match = match_.always(repo.root, repo.getcwd())
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s = lfdirstate.status(match, [], False, False, False)
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unsure, modified, added, removed, missing, unknown, ignored, clean = s
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for lfile in unsure:
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try:
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fctx = repo[rev][standin(lfile)]
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except LookupError:
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fctx = None
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if not fctx or fctx.data().strip() != hashfile(repo.wjoin(lfile)):
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modified.append(lfile)
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else:
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clean.append(lfile)
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lfdirstate.normal(lfile)
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return (modified, added, removed, missing, unknown, ignored, clean)
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def listlfiles(repo, rev=None, matcher=None):
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'''return a list of largefiles in the working copy or the
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specified changeset'''
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if matcher is None:
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matcher = getstandinmatcher(repo)
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# ignore unknown files in working directory
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return [splitstandin(f)
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for f in repo[rev].walk(matcher)
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if rev is not None or repo.dirstate[f] != '?']
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def instore(repo, hash):
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return os.path.exists(storepath(repo, hash))
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def storepath(repo, hash):
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return repo.join(os.path.join(longname, hash))
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def copyfromcache(repo, hash, filename):
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'''Copy the specified largefile from the repo or system cache to
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filename in the repository. Return true on success or false if the
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file was not found in either cache (which should not happened:
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this is meant to be called only after ensuring that the needed
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largefile exists in the cache).'''
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path = findfile(repo, hash)
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if path is None:
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return False
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util.makedirs(os.path.dirname(repo.wjoin(filename)))
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# The write may fail before the file is fully written, but we
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# don't use atomic writes in the working copy.
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shutil.copy(path, repo.wjoin(filename))
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return True
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def copytostore(repo, rev, file, uploaded=False):
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hash = readstandin(repo, file, rev)
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if instore(repo, hash):
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return
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copytostoreabsolute(repo, repo.wjoin(file), hash)
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def copyalltostore(repo, node):
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'''Copy all largefiles in a given revision to the store'''
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ctx = repo[node]
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for filename in ctx.files():
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if isstandin(filename) and filename in ctx.manifest():
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realfile = splitstandin(filename)
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copytostore(repo, ctx.node(), realfile)
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def copytostoreabsolute(repo, file, hash):
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if inusercache(repo.ui, hash):
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link(usercachepath(repo.ui, hash), storepath(repo, hash))
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elif not getattr(repo, "_isconverting", False):
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util.makedirs(os.path.dirname(storepath(repo, hash)))
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dst = util.atomictempfile(storepath(repo, hash),
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createmode=repo.store.createmode)
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for chunk in util.filechunkiter(open(file, 'rb')):
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dst.write(chunk)
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dst.close()
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linktousercache(repo, hash)
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def linktousercache(repo, hash):
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path = usercachepath(repo.ui, hash)
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if path:
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link(storepath(repo, hash), path)
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def getstandinmatcher(repo, pats=[], opts={}):
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'''Return a match object that applies pats to the standin directory'''
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standindir = repo.wjoin(shortname)
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if pats:
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pats = [os.path.join(standindir, pat) for pat in pats]
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else:
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# no patterns: relative to repo root
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pats = [standindir]
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# no warnings about missing files or directories
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match = scmutil.match(repo[None], pats, opts)
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match.bad = lambda f, msg: None
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return match
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def composestandinmatcher(repo, rmatcher):
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'''Return a matcher that accepts standins corresponding to the
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files accepted by rmatcher. Pass the list of files in the matcher
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as the paths specified by the user.'''
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smatcher = getstandinmatcher(repo, rmatcher.files())
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isstandin = smatcher.matchfn
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def composedmatchfn(f):
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return isstandin(f) and rmatcher.matchfn(splitstandin(f))
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smatcher.matchfn = composedmatchfn
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return smatcher
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def standin(filename):
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'''Return the repo-relative path to the standin for the specified big
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file.'''
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# Notes:
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# 1) Some callers want an absolute path, but for instance addlargefiles
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# needs it repo-relative so it can be passed to repo[None].add(). So
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# leave it up to the caller to use repo.wjoin() to get an absolute path.
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# 2) Join with '/' because that's what dirstate always uses, even on
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# Windows. Change existing separator to '/' first in case we are
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# passed filenames from an external source (like the command line).
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return shortnameslash + util.pconvert(filename)
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def isstandin(filename):
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'''Return true if filename is a big file standin. filename must be
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in Mercurial's internal form (slash-separated).'''
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return filename.startswith(shortnameslash)
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def splitstandin(filename):
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# Split on / because that's what dirstate always uses, even on Windows.
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# Change local separator to / first just in case we are passed filenames
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# from an external source (like the command line).
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bits = util.pconvert(filename).split('/', 1)
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if len(bits) == 2 and bits[0] == shortname:
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return bits[1]
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else:
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return None
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def updatestandin(repo, standin):
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file = repo.wjoin(splitstandin(standin))
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if os.path.exists(file):
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hash = hashfile(file)
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executable = getexecutable(file)
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writestandin(repo, standin, hash, executable)
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def readstandin(repo, filename, node=None):
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'''read hex hash from standin for filename at given node, or working
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directory if no node is given'''
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return repo[node][standin(filename)].data().strip()
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def writestandin(repo, standin, hash, executable):
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'''write hash to <repo.root>/<standin>'''
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repo.wwrite(standin, hash + '\n', executable and 'x' or '')
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def copyandhash(instream, outfile):
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'''Read bytes from instream (iterable) and write them to outfile,
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computing the SHA-1 hash of the data along the way. Return the hash.'''
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hasher = util.sha1('')
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for data in instream:
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hasher.update(data)
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outfile.write(data)
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return hasher.hexdigest()
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def hashrepofile(repo, file):
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return hashfile(repo.wjoin(file))
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def hashfile(file):
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if not os.path.exists(file):
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return ''
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hasher = util.sha1('')
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fd = open(file, 'rb')
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for data in util.filechunkiter(fd, 128 * 1024):
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hasher.update(data)
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fd.close()
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return hasher.hexdigest()
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def getexecutable(filename):
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mode = os.stat(filename).st_mode
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return ((mode & stat.S_IXUSR) and
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(mode & stat.S_IXGRP) and
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(mode & stat.S_IXOTH))
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def urljoin(first, second, *arg):
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def join(left, right):
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if not left.endswith('/'):
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left += '/'
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if right.startswith('/'):
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right = right[1:]
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return left + right
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url = join(first, second)
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for a in arg:
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url = join(url, a)
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return url
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def hexsha1(data):
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"""hexsha1 returns the hex-encoded sha1 sum of the data in the file-like
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object data"""
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h = util.sha1()
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for chunk in util.filechunkiter(data):
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h.update(chunk)
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return h.hexdigest()
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def httpsendfile(ui, filename):
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return httpconnection.httpsendfile(ui, filename, 'rb')
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def unixpath(path):
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'''Return a version of path normalized for use with the lfdirstate.'''
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return util.pconvert(os.path.normpath(path))
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def islfilesrepo(repo):
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if ('largefiles' in repo.requirements and
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util.any(shortnameslash in f[0] for f in repo.store.datafiles())):
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return True
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return util.any(openlfdirstate(repo.ui, repo, False))
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class storeprotonotcapable(Exception):
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def __init__(self, storetypes):
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self.storetypes = storetypes
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def getstandinsstate(repo):
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standins = []
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matcher = getstandinmatcher(repo)
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for standin in repo.dirstate.walk(matcher, [], False, False):
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lfile = splitstandin(standin)
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try:
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hash = readstandin(repo, lfile)
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except IOError:
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hash = None
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standins.append((lfile, hash))
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return standins
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def getlfilestoupdate(oldstandins, newstandins):
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changedstandins = set(oldstandins).symmetric_difference(set(newstandins))
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filelist = []
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for f in changedstandins:
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if f[0] not in filelist:
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filelist.append(f[0])
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return filelist
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def getlfilestoupload(repo, missing, addfunc):
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for n in missing:
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parents = [p for p in repo.changelog.parents(n) if p != node.nullid]
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ctx = repo[n]
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files = set(ctx.files())
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if len(parents) == 2:
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mc = ctx.manifest()
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mp1 = ctx.parents()[0].manifest()
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mp2 = ctx.parents()[1].manifest()
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for f in mp1:
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if f not in mc:
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files.add(f)
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for f in mp2:
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if f not in mc:
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files.add(f)
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for f in mc:
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if mc[f] != mp1.get(f, None) or mc[f] != mp2.get(f, None):
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files.add(f)
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for fn in files:
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if isstandin(fn) and fn in ctx:
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addfunc(fn, ctx[fn].data().strip())
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