Mercurial > hg
view mercurial/archival.py @ 9431:d1b135f2f415
convert: fix history topology when using hg.tagsbranch
When using hg.tagsbranch, all conversions fail at
transcribing the source repo topology with conversion
scenarios interleaving:
- initial repo conversion,
- then upstream tag
- then later incremental conversion
The problem is caused by the usage of the last source
revid as source revid for the tagnode in the revision
map.
On a later incremental conversion, when resolving some
child commit of the true last source revid, convert
will parent the nodes to the tag node. If using
tagsbranch you get a bad topology where all incremental
commit nodes end up in the tag branch.
Analysis and test by Edouard Gomez <ed.gomez@free.fr>
author | Patrick Mezard <pmezard@gmail.com> |
---|---|
date | Sun, 06 Sep 2009 15:29:14 +0200 |
parents | c5f36402daad |
children | 58edd448da4f |
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# archival.py - revision archival for mercurial # # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. from i18n import _ from node import hex import util import cStringIO, os, stat, tarfile, time, zipfile import zlib, gzip def tidyprefix(dest, prefix, suffixes): '''choose prefix to use for names in archive. make sure prefix is safe for consumers.''' if prefix: prefix = util.normpath(prefix) else: if not isinstance(dest, str): raise ValueError('dest must be string if no prefix') prefix = os.path.basename(dest) lower = prefix.lower() for sfx in suffixes: if lower.endswith(sfx): prefix = prefix[:-len(sfx)] break lpfx = os.path.normpath(util.localpath(prefix)) prefix = util.pconvert(lpfx) if not prefix.endswith('/'): prefix += '/' if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix: raise util.Abort(_('archive prefix contains illegal components')) return prefix class tarit(object): '''write archive to tar file or stream. can write uncompressed, or compress with gzip or bzip2.''' class GzipFileWithTime(gzip.GzipFile): def __init__(self, *args, **kw): timestamp = None if 'timestamp' in kw: timestamp = kw.pop('timestamp') if timestamp is None: self.timestamp = time.time() else: self.timestamp = timestamp gzip.GzipFile.__init__(self, *args, **kw) def _write_gzip_header(self): self.fileobj.write('\037\213') # magic header self.fileobj.write('\010') # compression method # Python 2.6 deprecates self.filename fname = getattr(self, 'name', None) or self.filename flags = 0 if fname: flags = gzip.FNAME self.fileobj.write(chr(flags)) gzip.write32u(self.fileobj, long(self.timestamp)) self.fileobj.write('\002') self.fileobj.write('\377') if fname: self.fileobj.write(fname + '\000') def __init__(self, dest, prefix, mtime, kind=''): self.prefix = tidyprefix(dest, prefix, ['.tar', '.tar.bz2', '.tar.gz', '.tgz', '.tbz2']) self.mtime = mtime def taropen(name, mode, fileobj=None): if kind == 'gz': mode = mode[0] if not fileobj: fileobj = open(name, mode + 'b') gzfileobj = self.GzipFileWithTime(name, mode + 'b', zlib.Z_BEST_COMPRESSION, fileobj, timestamp=mtime) return tarfile.TarFile.taropen(name, mode, gzfileobj) else: return tarfile.open(name, mode + kind, fileobj) if isinstance(dest, str): self.z = taropen(dest, mode='w:') else: # Python 2.5-2.5.1 have a regression that requires a name arg self.z = taropen(name='', mode='w|', fileobj=dest) def addfile(self, name, mode, islink, data): i = tarfile.TarInfo(self.prefix + name) i.mtime = self.mtime i.size = len(data) if islink: i.type = tarfile.SYMTYPE i.mode = 0777 i.linkname = data data = None i.size = 0 else: i.mode = mode data = cStringIO.StringIO(data) self.z.addfile(i, data) def done(self): self.z.close() class tellable(object): '''provide tell method for zipfile.ZipFile when writing to http response file object.''' def __init__(self, fp): self.fp = fp self.offset = 0 def __getattr__(self, key): return getattr(self.fp, key) def write(self, s): self.fp.write(s) self.offset += len(s) def tell(self): return self.offset class zipit(object): '''write archive to zip file or stream. can write uncompressed, or compressed with deflate.''' def __init__(self, dest, prefix, mtime, compress=True): self.prefix = tidyprefix(dest, prefix, ('.zip',)) if not isinstance(dest, str): try: dest.tell() except (AttributeError, IOError): dest = tellable(dest) self.z = zipfile.ZipFile(dest, 'w', compress and zipfile.ZIP_DEFLATED or zipfile.ZIP_STORED) self.date_time = time.gmtime(mtime)[:6] def addfile(self, name, mode, islink, data): i = zipfile.ZipInfo(self.prefix + name, self.date_time) i.compress_type = self.z.compression # unzip will not honor unix file modes unless file creator is # set to unix (id 3). i.create_system = 3 ftype = stat.S_IFREG if islink: mode = 0777 ftype = stat.S_IFLNK i.external_attr = (mode | ftype) << 16L self.z.writestr(i, data) def done(self): self.z.close() class fileit(object): '''write archive as files in directory.''' def __init__(self, name, prefix, mtime): if prefix: raise util.Abort(_('cannot give prefix when archiving to files')) self.basedir = name self.opener = util.opener(self.basedir) def addfile(self, name, mode, islink, data): if islink: self.opener.symlink(data, name) return f = self.opener(name, "w", atomictemp=True) f.write(data) f.rename() destfile = os.path.join(self.basedir, name) os.chmod(destfile, mode) def done(self): pass archivers = { 'files': fileit, 'tar': tarit, 'tbz2': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'bz2'), 'tgz': lambda name, prefix, mtime: tarit(name, prefix, mtime, 'gz'), 'uzip': lambda name, prefix, mtime: zipit(name, prefix, mtime, False), 'zip': zipit, } def archive(repo, dest, node, kind, decode=True, matchfn=None, prefix=None, mtime=None): '''create archive of repo as it was at node. dest can be name of directory, name of archive file, or file object to write archive to. kind is type of archive to create. decode tells whether to put files through decode filters from hgrc. matchfn is function to filter names of files to write to archive. prefix is name of path to put before every archive member.''' def write(name, mode, islink, getdata): if matchfn and not matchfn(name): return data = getdata() if decode: data = repo.wwritedata(name, data) archiver.addfile(name, mode, islink, data) if kind not in archivers: raise util.Abort(_("unknown archive type '%s'") % kind) ctx = repo[node] archiver = archivers[kind](dest, prefix, mtime or ctx.date()[0]) if repo.ui.configbool("ui", "archivemeta", True): write('.hg_archival.txt', 0644, False, lambda: 'repo: %s\nnode: %s\n' % ( hex(repo.changelog.node(0)), hex(node))) for f in ctx: ff = ctx.flags(f) write(f, 'x' in ff and 0755 or 0644, 'l' in ff, ctx[f].data) archiver.done()