mercurial/httprangereader.py
author mpm@selenic.com
Fri, 24 Jun 2005 22:58:14 -0800
changeset 461 9ae0034f2772
parent 372 4b0f562c61f4
child 1559 59b3639df0a9
permissions -rw-r--r--
[PATCH] /dev/null for other OS -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [PATCH] /dev/null for other OS From: K Thananchayan <thananck@yahoo.com> Null device name is platform dependent. Introduce util.nulldev - - platform dependent constant and use it instead of '/dev/null' manifest hash: 95a1bfdb712c53ef97aaff73f7f4c87e9299cf59 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCvQCGywK+sNU5EO8RAiRBAKCcXasCCFT2+6wgklkgqIt4l3UwugCeKWii h/8iRYEw8Rp8B67abiFiwyY= =L3Mk -----END PGP SIGNATURE-----

# 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()