contrib/dumprevlog

contrib: fix binary file issues with dumprevlog on Windows

* Fix traceback on dumprevlog: open revlog in mode 'rb' (binary)
* Set stdio to binary mode so that redirected data is not modified

References:
http://selenic.com/pipermail/mercurial/2008-March/018330.html
http://selenic.com/repo/index.cgi/hg/rev/a3fe91b4f6eb

#!/usr/bin/env python
# Dump revlogs as raw data stream
# $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump

import sys
from mercurial import revlog, node, util

for fp in (sys.stdin, sys.stdout, sys.stderr):
    util.set_binary(fp)

for f in sys.argv[1:]:
    binopen = lambda fn: open(fn, 'rb')
    r = revlog.revlog(binopen, f)
    print "file:", f
    for i in xrange(r.count()):
        n = r.node(i)
        p = r.parents(n)
        d = r.revision(n)
        print "node:", node.hex(n)
        print "linkrev:", r.linkrev(n)
        print "parents:", node.hex(p[0]), node.hex(p[1])
        print "length:", len(d)
        print "-start-"
        print d
        print "-end-"