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0cd9115520
The `_branchcache` attribute is turned into a dictionary. Key are filter name and value is a `branchcache` object. Unfiltered version is cached as `None` filter. The attribute is renamed to `_branchcaches` to avoid confusion with the previous one. Both old and new contents are dictionary even if their contents are different. I prefer possible extension code to crash right away instead of just messing the wrong dictionary. As all different caches work isolated to each other, this code keeps the previous behavior of using the unfiltered cache we nothing is filtered. This is a cheap way to have cache collaborate and nullify potential impact in the default case.
160 lines
5.0 KiB
Python
160 lines
5.0 KiB
Python
# statichttprepo.py - simple http repository class for mercurial
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#
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# This provides read-only repo access to repositories exported via static http
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.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 i18n import _
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import changelog, byterange, url, error
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import localrepo, manifest, util, scmutil, store
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import urllib, urllib2, errno
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class httprangereader(object):
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def __init__(self, url, opener):
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# we assume opener has HTTPRangeHandler
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self.url = url
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self.pos = 0
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self.opener = opener
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self.name = url
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def seek(self, pos):
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self.pos = pos
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def read(self, bytes=None):
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req = urllib2.Request(self.url)
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end = ''
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if bytes:
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end = self.pos + bytes - 1
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if self.pos or end:
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req.add_header('Range', 'bytes=%d-%s' % (self.pos, end))
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try:
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f = self.opener.open(req)
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data = f.read()
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# Python 2.6+ defines a getcode() function, and 2.4 and
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# 2.5 appear to always have an undocumented code attribute
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# set. If we can't read either of those, fall back to 206
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# and hope for the best.
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code = getattr(f, 'getcode', lambda : getattr(f, 'code', 206))()
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except urllib2.HTTPError, inst:
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num = inst.code == 404 and errno.ENOENT or None
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raise IOError(num, inst)
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except urllib2.URLError, inst:
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raise IOError(None, inst.reason[1])
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if code == 200:
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# HTTPRangeHandler does nothing if remote does not support
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# Range headers and returns the full entity. Let's slice it.
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if bytes:
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data = data[self.pos:self.pos + bytes]
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else:
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data = data[self.pos:]
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elif bytes:
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data = data[:bytes]
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self.pos += len(data)
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return data
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def __iter__(self):
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return iter(self.read().splitlines(1))
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def close(self):
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pass
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def build_opener(ui, authinfo):
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# urllib cannot handle URLs with embedded user or passwd
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urlopener = url.opener(ui, authinfo)
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urlopener.add_handler(byterange.HTTPRangeHandler())
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class statichttpvfs(scmutil.abstractvfs):
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def __init__(self, base):
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self.base = base
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def __call__(self, path, mode="r", atomictemp=None):
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if mode not in ('r', 'rb'):
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raise IOError('Permission denied')
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f = "/".join((self.base, urllib.quote(path)))
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return httprangereader(f, urlopener)
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def join(self, path):
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if path:
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return os.path.join(self.base, path)
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else:
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return self.base
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return statichttpvfs
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class statichttppeer(localrepo.localpeer):
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def local(self):
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return None
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def canpush(self):
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return False
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class statichttprepository(localrepo.localrepository):
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def __init__(self, ui, path):
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self._url = path
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self.ui = ui
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self.root = path
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u = util.url(path.rstrip('/') + "/.hg")
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self.path, authinfo = u.authinfo()
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opener = build_opener(ui, authinfo)
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self.opener = opener(self.path)
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self.vfs = self.opener
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self._phasedefaults = []
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try:
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requirements = scmutil.readrequires(self.opener, self.supported)
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise
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requirements = set()
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# check if it is a non-empty old-style repository
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try:
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fp = self.opener("00changelog.i")
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fp.read(1)
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fp.close()
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except IOError, inst:
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if inst.errno != errno.ENOENT:
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raise
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# we do not care about empty old-style repositories here
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msg = _("'%s' does not appear to be an hg repository") % path
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raise error.RepoError(msg)
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# setup store
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self.store = store.store(requirements, self.path, opener)
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self.spath = self.store.path
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self.sopener = self.store.opener
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self.svfs = self.sopener
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self.sjoin = self.store.join
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self._filecache = {}
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self.requirements = requirements
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self.manifest = manifest.manifest(self.sopener)
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self.changelog = changelog.changelog(self.sopener)
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self._tags = None
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self.nodetagscache = None
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self._branchcaches = {}
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self.encodepats = None
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self.decodepats = None
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def _restrictcapabilities(self, caps):
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return caps.difference(["pushkey"])
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def url(self):
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return self._url
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def local(self):
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return False
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def peer(self):
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return statichttppeer(self)
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def lock(self, wait=True):
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raise util.Abort(_('cannot lock static-http repository'))
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def instance(ui, path, create):
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if create:
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raise util.Abort(_('cannot create new static-http repository'))
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return statichttprepository(ui, path[7:])
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