Remove atomicfile class.
The interface provided by opener(atomic=True) is inherently unsafe:
if an exception is raised in the code using the atomic file, the
possibly incomplete file will be renamed to its final destination,
defeating the whole purpose of atomic files.
To get around this, we would either need some bad hacks involving
sys.exc_info (to make sure things work in except: blocks), or an
interface to say "file is complete; rename it".
This is the exact interface provided by atomictempfile. Since there
are no remaining users of the atomicfile class, just remove it.
# statichttprepo.py - simple http repository class for mercurial
#
# This provides read-only repo access to repositories exported via static http
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
from i18n import _
import changelog, filelog, httprangereader
import repo, localrepo, manifest, os, urllib, urllib2, util
class rangereader(httprangereader.httprangereader):
def read(self, size=None):
try:
return httprangereader.httprangereader.read(self, size)
except urllib2.HTTPError, inst:
raise IOError(None, inst)
except urllib2.URLError, inst:
raise IOError(None, inst.reason[1])
def opener(base):
"""return a function that opens files over http"""
p = base
def o(path, mode="r"):
f = "/".join((p, urllib.quote(path)))
return rangereader(f)
return o
class statichttprepository(localrepo.localrepository):
def __init__(self, ui, path):
self._url = path
self.ui = ui
self.path = (path + "/.hg")
self.opener = opener(self.path)
# find requirements
try:
requirements = self.opener("requires").read().splitlines()
except IOError:
requirements = []
# check them
for r in requirements:
if r not in self.supported:
raise repo.RepoError(_("requirement '%s' not supported") % r)
# setup store
if "store" in requirements:
self.encodefn = util.encodefilename
self.decodefn = util.decodefilename
self.spath = self.path + "/store"
else:
self.encodefn = lambda x: x
self.decodefn = lambda x: x
self.spath = self.path
self.sopener = util.encodedopener(opener(self.spath), self.encodefn)
self.manifest = manifest.manifest(self.sopener)
self.changelog = changelog.changelog(self.sopener)
self.tagscache = None
self.nodetagscache = None
self.encodepats = None
self.decodepats = None
def url(self):
return 'static-' + self._url
def dev(self):
return -1
def local(self):
return False
def instance(ui, path, create):
if create:
raise util.Abort(_('cannot create new static-http repository'))
if path.startswith('old-http:'):
ui.warn(_("old-http:// syntax is deprecated, "
"please use static-http:// instead\n"))
path = path[4:]
else:
path = path[7:]
return statichttprepository(ui, path)