mercurial/httprangereader.py
author thananck@yahoo.com
Tue, 05 Jul 2005 18:23:56 -0800
changeset 632 8b8f710bb658
parent 372 4b0f562c61f4
child 1559 59b3639df0a9
permissions -rw-r--r--
Provides output option to cat command # HG changeset patch # User thananck@yahoo.com # Node ID c838b9c2c71b1d64b8bde786f6470b30f23962de # Parent 7369ec5d93f2ffd490a43970edd9adf8d2bbe269 Provides output option to cat command expand function in commands.doexport is moved to toplevel and renamed to make_filename. The 'cat' command now accecpts --output <pattern> switch to specify the destination file. Index: hg/mercurial/commands.py ===================================================================

# 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()