Create an atomic opener that does not automatically rename on close
The revlog.checkinlinesize() uses an atomic opener to replace the
index file after converting it from inline to traditional .i and .d
files. If this operation is interrupted, the atomic file class can
overwrite a valid file with a partially written one.
This patch introduces an atomic opener that does not automatically
replace the destination file with the tempfile. This way
an interrupted checkinlinesize() call turns into a noop.
# httprangereader.py - just what it says
#
# Copyright 2005 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.
import byterange, urllib2
class httprangereader(object):
def __init__(self, url):
self.url = url
self.pos = 0
def seek(self, pos):
self.pos = pos
def read(self, bytes=None):
opener = urllib2.build_opener(byterange.HTTPRangeHandler())
urllib2.install_opener(opener)
req = urllib2.Request(self.url)
end = ''
if bytes: end = self.pos + bytes
req.add_header('Range', 'bytes=%d-%s' % (self.pos, end))
f = urllib2.urlopen(req)
return f.read()