mercurial/httprangereader.py
author mpm@selenic.com
Wed, 27 Jul 2005 18:16:20 -0800
changeset 785 46a8dd3145cc
parent 372 4b0f562c61f4
child 1559 59b3639df0a9
permissions -rw-r--r--
Fix undo after aborted commit bug Commit would overwrite undo.dirstate unconditionally, so an undo after an aborted commit would restore the dirstate from the aborted commit and not the prior transaction. This copies dirstate to journal.dirstate and moves it after a successful transaction.

# 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:
    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()