Mercurial > hg
view mercurial/changegroup.py @ 2072:74d3f5336b66
Implement revlogng.
revlogng results in smaller indexes, can address larger data files, and
supports flags and version numbers.
By default the original revlog format is used. To use the new format,
use the following .hgrc field:
[revlog]
# format choices are 0 (classic revlog format) and 1 revlogng
format=1
author | mason@suse.com |
---|---|
date | Tue, 04 Apr 2006 16:38:43 -0400 |
parents | 802e8a029d99 |
children | fe1689273f84 |
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""" changegroup.py - Mercurial changegroup manipulation functions Copyright 2006 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 struct from i18n import gettext as _ from demandload import * demandload(globals(), "util") def getchunk(source): """get a chunk from a changegroup""" d = source.read(4) if not d: return "" l = struct.unpack(">l", d)[0] if l <= 4: return "" d = source.read(l - 4) if len(d) < l - 4: raise util.Abort(_("premature EOF reading chunk" " (got %d bytes, expected %d)") % (len(d), l - 4)) return d def chunkiter(source): """iterate through the chunks in source""" while 1: c = getchunk(source) if not c: break yield c def genchunk(data): """build a changegroup chunk""" header = struct.pack(">l", len(data)+ 4) return "%s%s" % (header, data) def closechunk(): return struct.pack(">l", 0)