Mercurial > hg > mercurial-crew-with-dirclash
annotate 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> |
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date | Tue, 20 Jun 2006 14:57:30 -0300 |
parents | 12e11413ca19 |
children | 345bac2bc4ec |
rev | line source |
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372 | 1 # httprangereader.py - just what it says |
2 # | |
3 # Copyright 2005 Matt Mackall <mpm@selenic.com> | |
4 # | |
5 # This software may be used and distributed according to the terms | |
6 # of the GNU General Public License, incorporated herein by reference. | |
7 | |
8 import byterange, urllib2 | |
9 | |
1559
59b3639df0a9
Convert all classes to new-style classes by deriving them from object.
Eric Hopper <hopper@omnifarious.org>
parents:
372
diff
changeset
|
10 class httprangereader(object): |
372 | 11 def __init__(self, url): |
12 self.url = url | |
13 self.pos = 0 | |
14 def seek(self, pos): | |
15 self.pos = pos | |
16 def read(self, bytes=None): | |
17 opener = urllib2.build_opener(byterange.HTTPRangeHandler()) | |
18 urllib2.install_opener(opener) | |
19 req = urllib2.Request(self.url) | |
20 end = '' | |
2138
f5046cab9e2e
Fix revlog-ng interaction with old-http.
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
1559
diff
changeset
|
21 if bytes: |
f5046cab9e2e
Fix revlog-ng interaction with old-http.
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
1559
diff
changeset
|
22 end = self.pos + bytes - 1 |
372 | 23 req.add_header('Range', 'bytes=%d-%s' % (self.pos, end)) |
24 f = urllib2.urlopen(req) | |
2161
12e11413ca19
Fix just introduced possible old-http bug
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2138
diff
changeset
|
25 data = f.read() |
12e11413ca19
Fix just introduced possible old-http bug
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2138
diff
changeset
|
26 if bytes: |
12e11413ca19
Fix just introduced possible old-http bug
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2138
diff
changeset
|
27 data = data[:bytes] |
12e11413ca19
Fix just introduced possible old-http bug
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2138
diff
changeset
|
28 return data |