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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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'''High-level command function for lfconvert, plus the cmdtable.'''
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import os, errno
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import shutil
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from mercurial import util, match as match_, hg, node, context, error, \
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cmdutil, scmutil, commands
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from mercurial.i18n import _
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from mercurial.lock import release
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from hgext.convert import convcmd
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from hgext.convert import filemap
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import lfutil
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import basestore
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# -- Commands ----------------------------------------------------------
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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@command('lfconvert',
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[('s', 'size', '',
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_('minimum size (MB) for files to be converted as largefiles'), 'SIZE'),
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('', 'to-normal', False,
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_('convert from a largefiles repo to a normal repo')),
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],
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_('hg lfconvert SOURCE DEST [FILE ...]'),
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norepo=True,
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inferrepo=True)
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def lfconvert(ui, src, dest, *pats, **opts):
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'''convert a normal repository to a largefiles repository
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Convert repository SOURCE to a new repository DEST, identical to
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SOURCE except that certain files will be converted as largefiles:
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specifically, any file that matches any PATTERN *or* whose size is
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above the minimum size threshold is converted as a largefile. The
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size used to determine whether or not to track a file as a
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largefile is the size of the first version of the file. The
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minimum size can be specified either with --size or in
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configuration as ``largefiles.size``.
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After running this command you will need to make sure that
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largefiles is enabled anywhere you intend to push the new
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repository.
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Use --to-normal to convert largefiles back to normal files; after
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this, the DEST repository can be used without largefiles at all.'''
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if opts['to_normal']:
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tolfile = False
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else:
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tolfile = True
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size = lfutil.getminsize(ui, True, opts.get('size'), default=None)
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if not hg.islocal(src):
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raise util.Abort(_('%s is not a local Mercurial repo') % src)
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if not hg.islocal(dest):
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raise util.Abort(_('%s is not a local Mercurial repo') % dest)
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rsrc = hg.repository(ui, src)
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ui.status(_('initializing destination %s\n') % dest)
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rdst = hg.repository(ui, dest, create=True)
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success = False
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dstwlock = dstlock = None
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try:
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# Get a list of all changesets in the source. The easy way to do this
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# is to simply walk the changelog, using changelog.nodesbetween().
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# Take a look at mercurial/revlog.py:639 for more details.
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# Use a generator instead of a list to decrease memory usage
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ctxs = (rsrc[ctx] for ctx in rsrc.changelog.nodesbetween(None,
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rsrc.heads())[0])
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revmap = {node.nullid: node.nullid}
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if tolfile:
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# Lock destination to prevent modification while it is converted to.
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# Don't need to lock src because we are just reading from its
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# history which can't change.
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dstwlock = rdst.wlock()
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dstlock = rdst.lock()
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lfiles = set()
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normalfiles = set()
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if not pats:
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pats = ui.configlist(lfutil.longname, 'patterns', default=[])
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if pats:
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matcher = match_.match(rsrc.root, '', list(pats))
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else:
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matcher = None
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lfiletohash = {}
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for ctx in ctxs:
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ui.progress(_('converting revisions'), ctx.rev(),
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unit=_('revision'), total=rsrc['tip'].rev())
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_lfconvert_addchangeset(rsrc, rdst, ctx, revmap,
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lfiles, normalfiles, matcher, size, lfiletohash)
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ui.progress(_('converting revisions'), None)
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if os.path.exists(rdst.wjoin(lfutil.shortname)):
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shutil.rmtree(rdst.wjoin(lfutil.shortname))
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for f in lfiletohash.keys():
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if os.path.isfile(rdst.wjoin(f)):
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os.unlink(rdst.wjoin(f))
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try:
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os.removedirs(os.path.dirname(rdst.wjoin(f)))
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except OSError:
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pass
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# If there were any files converted to largefiles, add largefiles
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# to the destination repository's requirements.
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if lfiles:
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rdst.requirements.add('largefiles')
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rdst._writerequirements()
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else:
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class lfsource(filemap.filemap_source):
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def __init__(self, ui, source):
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super(lfsource, self).__init__(ui, source, None)
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self.filemapper.rename[lfutil.shortname] = '.'
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def getfile(self, name, rev):
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realname, realrev = rev
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f = super(lfsource, self).getfile(name, rev)
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if (not realname.startswith(lfutil.shortnameslash)
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or f[0] is None):
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return f
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# Substitute in the largefile data for the hash
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hash = f[0].strip()
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path = lfutil.findfile(rsrc, hash)
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if path is None:
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raise util.Abort(_("missing largefile for \'%s\' in %s")
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% (realname, realrev))
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fp = open(path, 'rb')
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try:
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return (fp.read(), f[1])
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finally:
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fp.close()
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class converter(convcmd.converter):
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def __init__(self, ui, source, dest, revmapfile, opts):
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src = lfsource(ui, source)
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super(converter, self).__init__(ui, src, dest, revmapfile,
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opts)
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found, missing = downloadlfiles(ui, rsrc)
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if missing != 0:
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raise util.Abort(_("all largefiles must be present locally"))
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orig = convcmd.converter
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convcmd.converter = converter
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try:
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convcmd.convert(ui, src, dest)
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finally:
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convcmd.converter = orig
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success = True
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finally:
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if tolfile:
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rdst.dirstate.clear()
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release(dstlock, dstwlock)
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if not success:
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# we failed, remove the new directory
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shutil.rmtree(rdst.root)
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def _lfconvert_addchangeset(rsrc, rdst, ctx, revmap, lfiles, normalfiles,
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matcher, size, lfiletohash):
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# Convert src parents to dst parents
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parents = _convertparents(ctx, revmap)
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# Generate list of changed files
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files = _getchangedfiles(ctx, parents)
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dstfiles = []
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for f in files:
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if f not in lfiles and f not in normalfiles:
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islfile = _islfile(f, ctx, matcher, size)
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# If this file was renamed or copied then copy
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# the largefile-ness of its predecessor
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if f in ctx.manifest():
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fctx = ctx.filectx(f)
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renamed = fctx.renamed()
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renamedlfile = renamed and renamed[0] in lfiles
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islfile |= renamedlfile
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if 'l' in fctx.flags():
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if renamedlfile:
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raise util.Abort(
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_('renamed/copied largefile %s becomes symlink')
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% f)
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islfile = False
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if islfile:
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lfiles.add(f)
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else:
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normalfiles.add(f)
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if f in lfiles:
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dstfiles.append(lfutil.standin(f))
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# largefile in manifest if it has not been removed/renamed
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if f in ctx.manifest():
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fctx = ctx.filectx(f)
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if 'l' in fctx.flags():
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renamed = fctx.renamed()
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if renamed and renamed[0] in lfiles:
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raise util.Abort(_('largefile %s becomes symlink') % f)
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# largefile was modified, update standins
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m = util.sha1('')
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m.update(ctx[f].data())
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hash = m.hexdigest()
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if f not in lfiletohash or lfiletohash[f] != hash:
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rdst.wwrite(f, ctx[f].data(), ctx[f].flags())
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executable = 'x' in ctx[f].flags()
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lfutil.writestandin(rdst, lfutil.standin(f), hash,
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executable)
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lfiletohash[f] = hash
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else:
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# normal file
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dstfiles.append(f)
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def getfilectx(repo, memctx, f):
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if lfutil.isstandin(f):
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# if the file isn't in the manifest then it was removed
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# or renamed, raise IOError to indicate this
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srcfname = lfutil.splitstandin(f)
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try:
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fctx = ctx.filectx(srcfname)
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except error.LookupError:
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return None
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renamed = fctx.renamed()
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if renamed:
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# standin is always a largefile because largefile-ness
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# doesn't change after rename or copy
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renamed = lfutil.standin(renamed[0])
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return context.memfilectx(repo, f, lfiletohash[srcfname] + '\n',
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'l' in fctx.flags(), 'x' in fctx.flags(),
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renamed)
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else:
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return _getnormalcontext(repo, ctx, f, revmap)
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# Commit
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_commitcontext(rdst, parents, ctx, dstfiles, getfilectx, revmap)
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def _commitcontext(rdst, parents, ctx, dstfiles, getfilectx, revmap):
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mctx = context.memctx(rdst, parents, ctx.description(), dstfiles,
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getfilectx, ctx.user(), ctx.date(), ctx.extra())
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ret = rdst.commitctx(mctx)
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lfutil.copyalltostore(rdst, ret)
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rdst.setparents(ret)
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revmap[ctx.node()] = rdst.changelog.tip()
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# Generate list of changed files
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def _getchangedfiles(ctx, parents):
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files = set(ctx.files())
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if node.nullid not in parents:
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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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files |= (set(mp1) | set(mp2)) - set(mc)
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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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return files
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# Convert src parents to dst parents
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def _convertparents(ctx, revmap):
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parents = []
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for p in ctx.parents():
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parents.append(revmap[p.node()])
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while len(parents) < 2:
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parents.append(node.nullid)
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return parents
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# Get memfilectx for a normal file
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def _getnormalcontext(repo, ctx, f, revmap):
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try:
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fctx = ctx.filectx(f)
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except error.LookupError:
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return None
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renamed = fctx.renamed()
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if renamed:
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renamed = renamed[0]
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data = fctx.data()
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if f == '.hgtags':
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data = _converttags (repo.ui, revmap, data)
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return context.memfilectx(repo, f, data, 'l' in fctx.flags(),
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'x' in fctx.flags(), renamed)
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# Remap tag data using a revision map
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def _converttags(ui, revmap, data):
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newdata = []
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for line in data.splitlines():
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try:
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id, name = line.split(' ', 1)
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except ValueError:
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ui.warn(_('skipping incorrectly formatted tag %s\n')
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% line)
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continue
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try:
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newid = node.bin(id)
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except TypeError:
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ui.warn(_('skipping incorrectly formatted id %s\n')
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% id)
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continue
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try:
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newdata.append('%s %s\n' % (node.hex(revmap[newid]),
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name))
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except KeyError:
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ui.warn(_('no mapping for id %s\n') % id)
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continue
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return ''.join(newdata)
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def _islfile(file, ctx, matcher, size):
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'''Return true if file should be considered a largefile, i.e.
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matcher matches it or it is larger than size.'''
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# never store special .hg* files as largefiles
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if file == '.hgtags' or file == '.hgignore' or file == '.hgsigs':
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return False
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if matcher and matcher(file):
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return True
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try:
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return ctx.filectx(file).size() >= size * 1024 * 1024
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except error.LookupError:
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return False
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def uploadlfiles(ui, rsrc, rdst, files):
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'''upload largefiles to the central store'''
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if not files:
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return
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store = basestore._openstore(rsrc, rdst, put=True)
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at = 0
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ui.debug("sending statlfile command for %d largefiles\n" % len(files))
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retval = store.exists(files)
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files = filter(lambda h: not retval[h], files)
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ui.debug("%d largefiles need to be uploaded\n" % len(files))
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for hash in files:
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ui.progress(_('uploading largefiles'), at, unit='largefile',
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total=len(files))
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source = lfutil.findfile(rsrc, hash)
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if not source:
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raise util.Abort(_('largefile %s missing from store'
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' (needs to be uploaded)') % hash)
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# XXX check for errors here
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store.put(source, hash)
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at += 1
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ui.progress(_('uploading largefiles'), None)
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def verifylfiles(ui, repo, all=False, contents=False):
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'''Verify that every largefile revision in the current changeset
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exists in the central store. With --contents, also verify that
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the contents of each local largefile file revision are correct (SHA-1 hash
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matches the revision ID). With --all, check every changeset in
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this repository.'''
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if all:
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revs = repo.revs('all()')
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else:
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revs = ['.']
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store = basestore._openstore(repo)
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return store.verify(revs, contents=contents)
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def cachelfiles(ui, repo, node, filelist=None):
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'''cachelfiles ensures that all largefiles needed by the specified revision
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are present in the repository's largefile cache.
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returns a tuple (cached, missing). cached is the list of files downloaded
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by this operation; missing is the list of files that were needed but could
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not be found.'''
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lfiles = lfutil.listlfiles(repo, node)
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if filelist:
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lfiles = set(lfiles) & set(filelist)
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toget = []
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for lfile in lfiles:
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try:
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expectedhash = repo[node][lfutil.standin(lfile)].data().strip()
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except IOError as err:
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if err.errno == errno.ENOENT:
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continue # node must be None and standin wasn't found in wctx
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raise
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if not lfutil.findfile(repo, expectedhash):
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toget.append((lfile, expectedhash))
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if toget:
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store = basestore._openstore(repo)
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ret = store.get(toget)
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return ret
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return ([], [])
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def downloadlfiles(ui, repo, rev=None):
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matchfn = scmutil.match(repo[None],
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[repo.wjoin(lfutil.shortname)], {})
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def prepare(ctx, fns):
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pass
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totalsuccess = 0
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totalmissing = 0
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if rev != []: # walkchangerevs on empty list would return all revs
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for ctx in cmdutil.walkchangerevs(repo, matchfn, {'rev' : rev},
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prepare):
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success, missing = cachelfiles(ui, repo, ctx.node())
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totalsuccess += len(success)
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totalmissing += len(missing)
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ui.status(_("%d additional largefiles cached\n") % totalsuccess)
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if totalmissing > 0:
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ui.status(_("%d largefiles failed to download\n") % totalmissing)
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return totalsuccess, totalmissing
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def updatelfiles(ui, repo, filelist=None, printmessage=None,
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normallookup=False):
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'''Update largefiles according to standins in the working directory
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If ``printmessage`` is other than ``None``, it means "print (or
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|
ignore, for false) message forcibly".
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'''
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statuswriter = lfutil.getstatuswriter(ui, repo, printmessage)
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wlock = repo.wlock()
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try:
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lfdirstate = lfutil.openlfdirstate(ui, repo)
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lfiles = set(lfutil.listlfiles(repo)) | set(lfdirstate)
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if filelist is not None:
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filelist = set(filelist)
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lfiles = [f for f in lfiles if f in filelist]
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update = {}
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updated, removed = 0, 0
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for lfile in lfiles:
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abslfile = repo.wjoin(lfile)
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absstandin = repo.wjoin(lfutil.standin(lfile))
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if os.path.exists(absstandin):
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if (os.path.exists(absstandin + '.orig') and
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os.path.exists(abslfile)):
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shutil.copyfile(abslfile, abslfile + '.orig')
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util.unlinkpath(absstandin + '.orig')
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expecthash = lfutil.readstandin(repo, lfile)
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if expecthash != '':
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if lfile not in repo[None]: # not switched to normal file
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util.unlinkpath(abslfile, ignoremissing=True)
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# use normallookup() to allocate an entry in largefiles
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# dirstate to prevent lfilesrepo.status() from reporting
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|
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# missing files as removed.
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|
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lfdirstate.normallookup(lfile)
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update[lfile] = expecthash
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else:
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|
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# Remove lfiles for which the standin is deleted, unless the
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|
|
# lfile is added to the repository again. This happens when a
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|
|
# largefile is converted back to a normal file: the standin
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|
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# disappears, but a new (normal) file appears as the lfile.
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|
|
if (os.path.exists(abslfile) and
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|
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repo.dirstate.normalize(lfile) not in repo[None]):
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util.unlinkpath(abslfile)
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removed += 1
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|
|
# largefile processing might be slow and be interrupted - be prepared
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|
|
lfdirstate.write()
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|
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if lfiles:
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|
|
statuswriter(_('getting changed largefiles\n'))
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|
|
cachelfiles(ui, repo, None, lfiles)
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|
|
for lfile in lfiles:
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|
|
update1 = 0
|
|
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|
|
|
expecthash = update.get(lfile)
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|
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if expecthash:
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|
|
if not lfutil.copyfromcache(repo, expecthash, lfile):
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|
|
# failed ... but already removed and set to normallookup
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|
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continue
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|
|
# Synchronize largefile dirstate to the last modified
|
|
|
# time of the file
|
|
|
lfdirstate.normal(lfile)
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|
|
update1 = 1
|
|
|
|
|
|
# copy the state of largefile standin from the repository's
|
|
|
# dirstate to its state in the lfdirstate.
|
|
|
abslfile = repo.wjoin(lfile)
|
|
|
absstandin = repo.wjoin(lfutil.standin(lfile))
|
|
|
if os.path.exists(absstandin):
|
|
|
mode = os.stat(absstandin).st_mode
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|
|
if mode != os.stat(abslfile).st_mode:
|
|
|
os.chmod(abslfile, mode)
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|
|
update1 = 1
|
|
|
|
|
|
updated += update1
|
|
|
|
|
|
lfutil.synclfdirstate(repo, lfdirstate, lfile, normallookup)
|
|
|
|
|
|
lfdirstate.write()
|
|
|
if lfiles:
|
|
|
statuswriter(_('%d largefiles updated, %d removed\n') % (updated,
|
|
|
removed))
|
|
|
finally:
|
|
|
wlock.release()
|
|
|
|
|
|
@command('lfpull',
|
|
|
[('r', 'rev', [], _('pull largefiles for these revisions'))
|
|
|
] + commands.remoteopts,
|
|
|
_('-r REV... [-e CMD] [--remotecmd CMD] [SOURCE]'))
|
|
|
def lfpull(ui, repo, source="default", **opts):
|
|
|
"""pull largefiles for the specified revisions from the specified source
|
|
|
|
|
|
Pull largefiles that are referenced from local changesets but missing
|
|
|
locally, pulling from a remote repository to the local cache.
|
|
|
|
|
|
If SOURCE is omitted, the 'default' path will be used.
|
|
|
See :hg:`help urls` for more information.
|
|
|
|
|
|
.. container:: verbose
|
|
|
|
|
|
Some examples:
|
|
|
|
|
|
- pull largefiles for all branch heads::
|
|
|
|
|
|
hg lfpull -r "head() and not closed()"
|
|
|
|
|
|
- pull largefiles on the default branch::
|
|
|
|
|
|
hg lfpull -r "branch(default)"
|
|
|
"""
|
|
|
repo.lfpullsource = source
|
|
|
|
|
|
revs = opts.get('rev', [])
|
|
|
if not revs:
|
|
|
raise util.Abort(_('no revisions specified'))
|
|
|
revs = scmutil.revrange(repo, revs)
|
|
|
|
|
|
numcached = 0
|
|
|
for rev in revs:
|
|
|
ui.note(_('pulling largefiles for revision %s\n') % rev)
|
|
|
(cached, missing) = cachelfiles(ui, repo, rev)
|
|
|
numcached += len(cached)
|
|
|
ui.status(_("%d largefiles cached\n") % numcached)
|
|
|
|
