Mercurial > hg
view mercurial/statichttprepo.py @ 12583:903828be7397
mq: explain qpush -f better
author | Mads Kiilerich <mads@kiilerich.com> |
---|---|
date | Wed, 29 Sep 2010 01:32:50 +0200 |
parents | aaf9968bd8b7 |
children | 61c9bc3da402 |
line wrap: on
line source
# statichttprepo.py - simple http repository class for mercurial # # This provides read-only repo access to repositories exported via static http # # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from i18n import _ import changelog, byterange, url, error import localrepo, manifest, util, store import urllib, urllib2, errno class httprangereader(object): def __init__(self, url, opener): # we assume opener has HTTPRangeHandler self.url = url self.pos = 0 self.opener = opener self.name = url def seek(self, pos): self.pos = pos def read(self, bytes=None): req = urllib2.Request(self.url) end = '' if bytes: end = self.pos + bytes - 1 req.add_header('Range', 'bytes=%d-%s' % (self.pos, end)) try: f = self.opener.open(req) data = f.read() if hasattr(f, 'getcode'): # python 2.6+ code = f.getcode() elif hasattr(f, 'code'): # undocumented attribute, seems to be set in 2.4 and 2.5 code = f.code else: # Don't know how to check, hope for the best. code = 206 except urllib2.HTTPError, inst: num = inst.code == 404 and errno.ENOENT or None raise IOError(num, inst) except urllib2.URLError, inst: raise IOError(None, inst.reason[1]) if code == 200: # HTTPRangeHandler does nothing if remote does not support # Range headers and returns the full entity. Let's slice it. if bytes: data = data[self.pos:self.pos + bytes] else: data = data[self.pos:] elif bytes: data = data[:bytes] self.pos += len(data) return data def __iter__(self): return iter(self.read().splitlines(1)) def close(self): pass def build_opener(ui, authinfo): # urllib cannot handle URLs with embedded user or passwd urlopener = url.opener(ui, authinfo) urlopener.add_handler(byterange.HTTPRangeHandler()) def opener(base): """return a function that opens files over http""" p = base def o(path, mode="r", atomictemp=None): if 'a' in mode or 'w' in mode: raise IOError('Permission denied') f = "/".join((p, urllib.quote(path))) return httprangereader(f, urlopener) return o opener.options = {'nonlazy': 1} return opener class statichttprepository(localrepo.localrepository): def __init__(self, ui, path): self._url = path self.ui = ui self.root = path self.path, authinfo = url.getauthinfo(path.rstrip('/') + "/.hg") opener = build_opener(ui, authinfo) self.opener = opener(self.path) # find requirements try: requirements = self.opener("requires").read().splitlines() except IOError, inst: if inst.errno != errno.ENOENT: raise # check if it is a non-empty old-style repository try: self.opener("00changelog.i").read(1) except IOError, inst: if inst.errno != errno.ENOENT: raise # we do not care about empty old-style repositories here msg = _("'%s' does not appear to be an hg repository") % path raise error.RepoError(msg) requirements = [] # check them for r in requirements: if r not in self.supported: raise error.RepoError(_("requirement '%s' not supported") % r) # setup store def pjoin(a, b): return a + '/' + b self.store = store.store(requirements, self.path, opener, pjoin) self.spath = self.store.path self.sopener = self.store.opener self.sjoin = self.store.join self.manifest = manifest.manifest(self.sopener) self.changelog = changelog.changelog(self.sopener) self._tags = None self.nodetagscache = None self._branchcache = None self._branchcachetip = None self.encodepats = None self.decodepats = None self.capabilities.remove("pushkey") def url(self): return self._url def local(self): return False def lock(self, wait=True): raise util.Abort(_('cannot lock static-http repository')) def instance(ui, path, create): if create: raise util.Abort(_('cannot create new static-http repository')) return statichttprepository(ui, path[7:])