Mercurial > hg
view mercurial/archival.py @ 2320:dbdce3b99988
fix parsing of tags. make parse errors useful. add new tag tests.
old code read every head of .hgtags. delete and recreate of .hgtags gave
new head, but if error in deleted rev, .hgtags had error messages every
time it was parsed. this was very hard to fix, because deleted revs hard
to get back and update, needed merges too.
new code reads .hgtags on every head. advantage is if parse error
happens with new code, is possible to fix them by editing .hgtags on a
head and committing.
NOTE: new code uses binary search of manifest of each head to be fast,
but still much slower than old code. best thing would be to have delete
record stored in filelog so we never touch manifest. could find live
heads directly from filelog. this is more work than i want now.
new tests check for parse of tags on different heads, and inaccessible
heads created by delete and recreate of .hgtags.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Thu, 18 May 2006 23:31:12 -0700 |
parents | 4564794b6f55 |
children | 0c0bfea3f72a |
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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, incorporated herein by reference. from demandload import * from i18n import gettext as _ from node import * demandload(globals(), 'cStringIO os stat tarfile time util zipfile') def tidyprefix(dest, prefix, suffixes): '''choose prefix to use for names in archive. make sure prefix is safe for consumers.''' if prefix: prefix = prefix.replace('\\', '/') 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: '''write archive to tar file or stream. can write uncompressed, or compress with gzip or bzip2.''' def __init__(self, dest, prefix, kind=''): self.prefix = tidyprefix(dest, prefix, ['.tar', '.tar.bz2', '.tar.gz', '.tgz', 'tbz2']) self.mtime = int(time.time()) if isinstance(dest, str): self.z = tarfile.open(dest, mode='w:'+kind) else: self.z = tarfile.open(mode='w|'+kind, fileobj=dest) def addfile(self, name, mode, data): i = tarfile.TarInfo(self.prefix + name) i.mtime = self.mtime i.size = len(data) i.mode = mode self.z.addfile(i, cStringIO.StringIO(data)) def done(self): self.z.close() class tellable: '''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: '''write archive to zip file or stream. can write uncompressed, or compressed with deflate.''' def __init__(self, dest, prefix, 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(time.time())[:6] def addfile(self, name, mode, data): i = zipfile.ZipInfo(self.prefix + name, self.date_time) i.compress_type = self.z.compression i.flag_bits = 0x08 # unzip will not honor unix file modes unless file creator is # set to unix (id 3). i.create_system = 3 i.external_attr = (mode | stat.S_IFREG) << 16L self.z.writestr(i, data) def done(self): self.z.close() class fileit: '''write archive as files in directory.''' def __init__(self, name, prefix): if prefix: raise util.Abort(_('cannot give prefix when archiving to files')) self.basedir = name self.dirs = {} self.oflags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY | getattr(os, 'O_BINARY', 0) | getattr(os, 'O_NOFOLLOW', 0)) def addfile(self, name, mode, data): destfile = os.path.join(self.basedir, name) destdir = os.path.dirname(destfile) if destdir not in self.dirs: if not os.path.isdir(destdir): os.makedirs(destdir) self.dirs[destdir] = 1 os.fdopen(os.open(destfile, self.oflags, mode), 'wb').write(data) def done(self): pass archivers = { 'files': fileit, 'tar': tarit, 'tbz2': lambda name, prefix: tarit(name, prefix, 'bz2'), 'tgz': lambda name, prefix: tarit(name, prefix, 'gz'), 'uzip': lambda name, prefix: zipit(name, prefix, False), 'zip': zipit, } def archive(repo, dest, node, kind, decode=True, matchfn=None, prefix=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, data): if matchfn and not matchfn(name): return if decode: fp = cStringIO.StringIO() repo.wwrite(None, data, fp) data = fp.getvalue() archiver.addfile(name, mode, data) archiver = archivers[kind](dest, prefix) mn = repo.changelog.read(node)[0] mf = repo.manifest.read(mn).items() mff = repo.manifest.readflags(mn) mf.sort() write('.hg_archival.txt', 0644, 'repo: %s\nnode: %s\n' % (hex(repo.changelog.node(0)), hex(node))) for filename, filenode in mf: write(filename, mff[filename] and 0755 or 0644, repo.file(filename).read(filenode)) archiver.done()