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30913031d4
The home of 'Abort' is 'error' not 'util' however, a lot of code seems to be confused about that and gives all the credit to 'util' instead of the hardworking 'error'. In a spirit of equity, we break the cycle of injustice and give back to 'error' the respect it deserves. And screw that 'util' poser. For great justice.
342 lines
11 KiB
Python
342 lines
11 KiB
Python
# archival.py - revision archival for mercurial
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#
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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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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from __future__ import absolute_import
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import cStringIO
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import gzip
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import os
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import struct
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import tarfile
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import time
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import zipfile
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import zlib
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from .i18n import _
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from . import (
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cmdutil,
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encoding,
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error,
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match as matchmod,
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scmutil,
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util,
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)
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# from unzip source code:
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_UNX_IFREG = 0x8000
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_UNX_IFLNK = 0xa000
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def tidyprefix(dest, kind, prefix):
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'''choose prefix to use for names in archive. make sure prefix is
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safe for consumers.'''
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if prefix:
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prefix = util.normpath(prefix)
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else:
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if not isinstance(dest, str):
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raise ValueError('dest must be string if no prefix')
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prefix = os.path.basename(dest)
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lower = prefix.lower()
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for sfx in exts.get(kind, []):
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if lower.endswith(sfx):
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prefix = prefix[:-len(sfx)]
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break
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lpfx = os.path.normpath(util.localpath(prefix))
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prefix = util.pconvert(lpfx)
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if not prefix.endswith('/'):
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prefix += '/'
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# Drop the leading '.' path component if present, so Windows can read the
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# zip files (issue4634)
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if prefix.startswith('./'):
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prefix = prefix[2:]
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if prefix.startswith('../') or os.path.isabs(lpfx) or '/../' in prefix:
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raise error.Abort(_('archive prefix contains illegal components'))
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return prefix
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exts = {
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'tar': ['.tar'],
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'tbz2': ['.tbz2', '.tar.bz2'],
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'tgz': ['.tgz', '.tar.gz'],
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'zip': ['.zip'],
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}
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def guesskind(dest):
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for kind, extensions in exts.iteritems():
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if any(dest.endswith(ext) for ext in extensions):
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return kind
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return None
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def _rootctx(repo):
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# repo[0] may be hidden
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for rev in repo:
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return repo[rev]
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return repo['null']
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def buildmetadata(ctx):
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'''build content of .hg_archival.txt'''
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repo = ctx.repo()
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hex = ctx.hex()
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if ctx.rev() is None:
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hex = ctx.p1().hex()
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if ctx.dirty():
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hex += '+'
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base = 'repo: %s\nnode: %s\nbranch: %s\n' % (
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_rootctx(repo).hex(), hex, encoding.fromlocal(ctx.branch()))
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tags = ''.join('tag: %s\n' % t for t in ctx.tags()
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if repo.tagtype(t) == 'global')
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if not tags:
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repo.ui.pushbuffer()
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opts = {'template': '{latesttag}\n{latesttagdistance}\n'
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'{changessincelatesttag}',
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'style': '', 'patch': None, 'git': None}
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cmdutil.show_changeset(repo.ui, repo, opts).show(ctx)
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ltags, dist, changessince = repo.ui.popbuffer().split('\n')
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ltags = ltags.split(':')
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tags = ''.join('latesttag: %s\n' % t for t in ltags)
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tags += 'latesttagdistance: %s\n' % dist
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tags += 'changessincelatesttag: %s\n' % changessince
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return base + tags
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class tarit(object):
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'''write archive to tar file or stream. can write uncompressed,
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or compress with gzip or bzip2.'''
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class GzipFileWithTime(gzip.GzipFile):
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def __init__(self, *args, **kw):
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timestamp = None
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if 'timestamp' in kw:
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timestamp = kw.pop('timestamp')
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if timestamp is None:
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self.timestamp = time.time()
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else:
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self.timestamp = timestamp
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gzip.GzipFile.__init__(self, *args, **kw)
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def _write_gzip_header(self):
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self.fileobj.write('\037\213') # magic header
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self.fileobj.write('\010') # compression method
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fname = self.name
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if fname and fname.endswith('.gz'):
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fname = fname[:-3]
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flags = 0
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if fname:
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flags = gzip.FNAME
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self.fileobj.write(chr(flags))
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gzip.write32u(self.fileobj, long(self.timestamp))
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self.fileobj.write('\002')
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self.fileobj.write('\377')
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if fname:
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self.fileobj.write(fname + '\000')
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def __init__(self, dest, mtime, kind=''):
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self.mtime = mtime
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self.fileobj = None
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def taropen(name, mode, fileobj=None):
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if kind == 'gz':
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mode = mode[0]
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if not fileobj:
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fileobj = open(name, mode + 'b')
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gzfileobj = self.GzipFileWithTime(name, mode + 'b',
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zlib.Z_BEST_COMPRESSION,
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fileobj, timestamp=mtime)
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self.fileobj = gzfileobj
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return tarfile.TarFile.taropen(name, mode, gzfileobj)
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else:
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return tarfile.open(name, mode + kind, fileobj)
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if isinstance(dest, str):
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self.z = taropen(dest, mode='w:')
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else:
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# Python 2.5-2.5.1 have a regression that requires a name arg
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self.z = taropen(name='', mode='w|', fileobj=dest)
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def addfile(self, name, mode, islink, data):
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i = tarfile.TarInfo(name)
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i.mtime = self.mtime
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i.size = len(data)
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if islink:
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i.type = tarfile.SYMTYPE
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i.mode = 0o777
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i.linkname = data
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data = None
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i.size = 0
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else:
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i.mode = mode
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data = cStringIO.StringIO(data)
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self.z.addfile(i, data)
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def done(self):
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self.z.close()
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if self.fileobj:
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self.fileobj.close()
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class tellable(object):
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'''provide tell method for zipfile.ZipFile when writing to http
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response file object.'''
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def __init__(self, fp):
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self.fp = fp
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self.offset = 0
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def __getattr__(self, key):
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return getattr(self.fp, key)
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def write(self, s):
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self.fp.write(s)
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self.offset += len(s)
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def tell(self):
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return self.offset
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class zipit(object):
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'''write archive to zip file or stream. can write uncompressed,
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or compressed with deflate.'''
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def __init__(self, dest, mtime, compress=True):
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if not isinstance(dest, str):
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try:
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dest.tell()
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except (AttributeError, IOError):
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dest = tellable(dest)
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self.z = zipfile.ZipFile(dest, 'w',
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compress and zipfile.ZIP_DEFLATED or
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zipfile.ZIP_STORED)
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# Python's zipfile module emits deprecation warnings if we try
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# to store files with a date before 1980.
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epoch = 315532800 # calendar.timegm((1980, 1, 1, 0, 0, 0, 1, 1, 0))
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if mtime < epoch:
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mtime = epoch
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self.mtime = mtime
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self.date_time = time.gmtime(mtime)[:6]
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def addfile(self, name, mode, islink, data):
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i = zipfile.ZipInfo(name, self.date_time)
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i.compress_type = self.z.compression
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# unzip will not honor unix file modes unless file creator is
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# set to unix (id 3).
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i.create_system = 3
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ftype = _UNX_IFREG
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if islink:
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mode = 0o777
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ftype = _UNX_IFLNK
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i.external_attr = (mode | ftype) << 16L
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# add "extended-timestamp" extra block, because zip archives
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# without this will be extracted with unexpected timestamp,
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# if TZ is not configured as GMT
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i.extra += struct.pack('<hhBl',
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0x5455, # block type: "extended-timestamp"
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1 + 4, # size of this block
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1, # "modification time is present"
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int(self.mtime)) # last modification (UTC)
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self.z.writestr(i, data)
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def done(self):
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self.z.close()
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class fileit(object):
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'''write archive as files in directory.'''
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def __init__(self, name, mtime):
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self.basedir = name
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self.opener = scmutil.opener(self.basedir)
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def addfile(self, name, mode, islink, data):
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if islink:
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self.opener.symlink(data, name)
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return
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f = self.opener(name, "w", atomictemp=True)
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f.write(data)
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f.close()
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destfile = os.path.join(self.basedir, name)
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os.chmod(destfile, mode)
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def done(self):
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pass
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archivers = {
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'files': fileit,
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'tar': tarit,
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'tbz2': lambda name, mtime: tarit(name, mtime, 'bz2'),
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'tgz': lambda name, mtime: tarit(name, mtime, 'gz'),
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'uzip': lambda name, mtime: zipit(name, mtime, False),
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'zip': zipit,
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}
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def archive(repo, dest, node, kind, decode=True, matchfn=None,
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prefix='', mtime=None, subrepos=False):
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'''create archive of repo as it was at node.
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dest can be name of directory, name of archive file, or file
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object to write archive to.
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kind is type of archive to create.
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decode tells whether to put files through decode filters from
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hgrc.
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matchfn is function to filter names of files to write to archive.
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prefix is name of path to put before every archive member.'''
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if kind == 'files':
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if prefix:
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raise error.Abort(_('cannot give prefix when archiving to files'))
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else:
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prefix = tidyprefix(dest, kind, prefix)
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def write(name, mode, islink, getdata):
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data = getdata()
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if decode:
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data = repo.wwritedata(name, data)
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archiver.addfile(prefix + name, mode, islink, data)
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if kind not in archivers:
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raise error.Abort(_("unknown archive type '%s'") % kind)
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ctx = repo[node]
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archiver = archivers[kind](dest, mtime or ctx.date()[0])
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if repo.ui.configbool("ui", "archivemeta", True):
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name = '.hg_archival.txt'
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if not matchfn or matchfn(name):
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write(name, 0o644, False, lambda: buildmetadata(ctx))
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if matchfn:
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files = [f for f in ctx.manifest().keys() if matchfn(f)]
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else:
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files = ctx.manifest().keys()
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total = len(files)
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if total:
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files.sort()
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repo.ui.progress(_('archiving'), 0, unit=_('files'), total=total)
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for i, f in enumerate(files):
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ff = ctx.flags(f)
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write(f, 'x' in ff and 0o755 or 0o644, 'l' in ff, ctx[f].data)
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repo.ui.progress(_('archiving'), i + 1, item=f,
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unit=_('files'), total=total)
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repo.ui.progress(_('archiving'), None)
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if subrepos:
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for subpath in sorted(ctx.substate):
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sub = ctx.workingsub(subpath)
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submatch = matchmod.narrowmatcher(subpath, matchfn)
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total += sub.archive(archiver, prefix, submatch)
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if total == 0:
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raise error.Abort(_('no files match the archive pattern'))
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archiver.done()
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return total
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