Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/httprangereader.py @ 2489:568e58eed096
Add revlog.parentrevs function.
This allows one to walk the revision graph using only revision numbers,
which can be faster than using revision hashes, especially for
RevlogNG, where the parents of a revision are stored as revision
numbers.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
---|---|
date | Tue, 20 Jun 2006 14:57:30 -0300 |
parents | 12e11413ca19 |
children | 345bac2bc4ec |
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# 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