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# 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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import copy
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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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matcher = getstandinmatcher(repo)
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standins = repo.dirstate.walk(matcher, [], False, False)
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if len(standins) > 0:
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util.makedirs(lfstoredir)
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for standin in standins:
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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):
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wctx = repo['.']
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match = match_.always(repo.root, repo.getcwd())
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unsure, s = lfdirstate.status(match, [], False, False, False)
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modified, clean = s.modified, s.clean
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for lfile in unsure:
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try:
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fctx = wctx[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 s
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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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else:
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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 synclfdirstate(repo, lfdirstate, lfile, normallookup):
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lfstandin = standin(lfile)
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if lfstandin in repo.dirstate:
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stat = repo.dirstate._map[lfstandin]
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state, mtime = stat[0], stat[3]
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else:
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state, mtime = '?', -1
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if state == 'n':
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if normallookup or mtime < 0:
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# state 'n' doesn't ensure 'clean' in this case
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lfdirstate.normallookup(lfile)
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else:
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lfdirstate.normal(lfile)
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elif state == 'm':
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lfdirstate.normallookup(lfile)
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elif state == 'r':
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lfdirstate.remove(lfile)
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elif state == 'a':
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lfdirstate.add(lfile)
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elif state == '?':
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lfdirstate.drop(lfile)
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def markcommitted(orig, ctx, node):
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repo = ctx.repo()
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orig(node)
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# ATTENTION: "ctx.files()" may differ from "repo[node].files()"
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# because files coming from the 2nd parent are omitted in the latter.
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#
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# The former should be used to get targets of "synclfdirstate",
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# because such files:
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# - are marked as "a" by "patch.patch()" (e.g. via transplant), and
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# - have to be marked as "n" after commit, but
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# - aren't listed in "repo[node].files()"
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lfdirstate = openlfdirstate(repo.ui, repo)
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for f in ctx.files():
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if isstandin(f):
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lfile = splitstandin(f)
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synclfdirstate(repo, lfdirstate, lfile, False)
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lfdirstate.write()
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# As part of committing, copy all of the largefiles into the cache.
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copyalltostore(repo, node)
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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:
|
|
|
filelist.append(f[0])
|
|
|
return filelist
|
|
|
|
|
|
def getlfilestoupload(repo, missing, addfunc):
|
|
|
for i, n in enumerate(missing):
|
|
|
repo.ui.progress(_('finding outgoing largefiles'), i,
|
|
|
unit=_('revision'), total=len(missing))
|
|
|
parents = [p for p in repo.changelog.parents(n) if p != node.nullid]
|
|
|
|
|
|
oldlfstatus = repo.lfstatus
|
|
|
repo.lfstatus = False
|
|
|
try:
|
|
|
ctx = repo[n]
|
|
|
finally:
|
|
|
repo.lfstatus = oldlfstatus
|
|
|
|
|
|
files = set(ctx.files())
|
|
|
if len(parents) == 2:
|
|
|
mc = ctx.manifest()
|
|
|
mp1 = ctx.parents()[0].manifest()
|
|
|
mp2 = ctx.parents()[1].manifest()
|
|
|
for f in mp1:
|
|
|
if f not in mc:
|
|
|
files.add(f)
|
|
|
for f in mp2:
|
|
|
if f not in mc:
|
|
|
files.add(f)
|
|
|
for f in mc:
|
|
|
if mc[f] != mp1.get(f, None) or mc[f] != mp2.get(f, None):
|
|
|
files.add(f)
|
|
|
for fn in files:
|
|
|
if isstandin(fn) and fn in ctx:
|
|
|
addfunc(fn, ctx[fn].data().strip())
|
|
|
repo.ui.progress(_('finding outgoing largefiles'), None)
|
|
|
|
|
|
def updatestandinsbymatch(repo, match):
|
|
|
'''Update standins in the working directory according to specified match
|
|
|
|
|
|
This returns (possibly modified) ``match`` object to be used for
|
|
|
subsequent commit process.
|
|
|
'''
|
|
|
|
|
|
ui = repo.ui
|
|
|
|
|
|
# Case 1: user calls commit with no specific files or
|
|
|
# include/exclude patterns: refresh and commit all files that
|
|
|
# are "dirty".
|
|
|
if match is None or match.always():
|
|
|
# Spend a bit of time here to get a list of files we know
|
|
|
# are modified so we can compare only against those.
|
|
|
# It can cost a lot of time (several seconds)
|
|
|
# otherwise to update all standins if the largefiles are
|
|
|
# large.
|
|
|
lfdirstate = openlfdirstate(ui, repo)
|
|
|
dirtymatch = match_.always(repo.root, repo.getcwd())
|
|
|
unsure, s = lfdirstate.status(dirtymatch, [], False, False,
|
|
|
False)
|
|
|
modifiedfiles = unsure + s.modified + s.added + s.removed
|
|
|
lfiles = listlfiles(repo)
|
|
|
# this only loops through largefiles that exist (not
|
|
|
# removed/renamed)
|
|
|
for lfile in lfiles:
|
|
|
if lfile in modifiedfiles:
|
|
|
if os.path.exists(
|
|
|
repo.wjoin(standin(lfile))):
|
|
|
# this handles the case where a rebase is being
|
|
|
# performed and the working copy is not updated
|
|
|
# yet.
|
|
|
if os.path.exists(repo.wjoin(lfile)):
|
|
|
updatestandin(repo,
|
|
|
standin(lfile))
|
|
|
|
|
|
return match
|
|
|
|
|
|
lfiles = listlfiles(repo)
|
|
|
match._files = repo._subdirlfs(match.files(), lfiles)
|
|
|
|
|
|
# Case 2: user calls commit with specified patterns: refresh
|
|
|
# any matching big files.
|
|
|
smatcher = composestandinmatcher(repo, match)
|
|
|
standins = repo.dirstate.walk(smatcher, [], False, False)
|
|
|
|
|
|
# No matching big files: get out of the way and pass control to
|
|
|
# the usual commit() method.
|
|
|
if not standins:
|
|
|
return match
|
|
|
|
|
|
# Refresh all matching big files. It's possible that the
|
|
|
# commit will end up failing, in which case the big files will
|
|
|
# stay refreshed. No harm done: the user modified them and
|
|
|
# asked to commit them, so sooner or later we're going to
|
|
|
# refresh the standins. Might as well leave them refreshed.
|
|
|
lfdirstate = openlfdirstate(ui, repo)
|
|
|
for fstandin in standins:
|
|
|
lfile = splitstandin(fstandin)
|
|
|
if lfdirstate[lfile] != 'r':
|
|
|
updatestandin(repo, fstandin)
|
|
|
|
|
|
# Cook up a new matcher that only matches regular files or
|
|
|
# standins corresponding to the big files requested by the
|
|
|
# user. Have to modify _files to prevent commit() from
|
|
|
# complaining "not tracked" for big files.
|
|
|
match = copy.copy(match)
|
|
|
origmatchfn = match.matchfn
|
|
|
|
|
|
# Check both the list of largefiles and the list of
|
|
|
# standins because if a largefile was removed, it
|
|
|
# won't be in the list of largefiles at this point
|
|
|
match._files += sorted(standins)
|
|
|
|
|
|
actualfiles = []
|
|
|
for f in match._files:
|
|
|
fstandin = standin(f)
|
|
|
|
|
|
# ignore known largefiles and standins
|
|
|
if f in lfiles or fstandin in standins:
|
|
|
continue
|
|
|
|
|
|
actualfiles.append(f)
|
|
|
match._files = actualfiles
|
|
|
|
|
|
def matchfn(f):
|
|
|
if origmatchfn(f):
|
|
|
return f not in lfiles
|
|
|
else:
|
|
|
return f in standins
|
|
|
|
|
|
match.matchfn = matchfn
|
|
|
|
|
|
return match
|
|
|
|
|
|
class automatedcommithook(object):
|
|
|
'''Stateful hook to update standins at the 1st commit of resuming
|
|
|
|
|
|
For efficiency, updating standins in the working directory should
|
|
|
be avoided while automated committing (like rebase, transplant and
|
|
|
so on), because they should be updated before committing.
|
|
|
|
|
|
But the 1st commit of resuming automated committing (e.g. ``rebase
|
|
|
--continue``) should update them, because largefiles may be
|
|
|
modified manually.
|
|
|
'''
|
|
|
def __init__(self, resuming):
|
|
|
self.resuming = resuming
|
|
|
|
|
|
def __call__(self, repo, match):
|
|
|
if self.resuming:
|
|
|
self.resuming = False # avoids updating at subsequent commits
|
|
|
return updatestandinsbymatch(repo, match)
|
|
|
else:
|
|
|
return match
|
|
|
|
|
|
def getstatuswriter(ui, repo, forcibly=None):
|
|
|
'''Return the function to write largefiles specific status out
|
|
|
|
|
|
If ``forcibly`` is ``None``, this returns the last element of
|
|
|
``repo._lfstatuswriters`` as "default" writer function.
|
|
|
|
|
|
Otherwise, this returns the function to always write out (or
|
|
|
ignore if ``not forcibly``) status.
|
|
|
'''
|
|
|
if forcibly is None and util.safehasattr(repo, '_largefilesenabled'):
|
|
|
return repo._lfstatuswriters[-1]
|
|
|
else:
|
|
|
if forcibly:
|
|
|
return ui.status # forcibly WRITE OUT
|
|
|
else:
|
|
|
return lambda *msg, **opts: None # forcibly IGNORE
|
|
|
|
