mercurial/httprangereader.py
author Vadim Gelfer <vadim.gelfer@gmail.com>
Thu, 27 Jul 2006 18:24:59 -0700
changeset 2713 35caf437a201
parent 2161 12e11413ca19
child 2859 345bac2bc4ec
permissions -rw-r--r--
mq: fix queue.apply to not call os.chdir() call to os.chdir broke "hg -R dirname qpush". instead pass -d (change directory) option to patch command.

# 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 - 1
        req.add_header('Range', 'bytes=%d-%s' % (self.pos, end))
        f = urllib2.urlopen(req)
        data = f.read()
        if bytes:
            data = data[:bytes]
        return data