convert/subversion: work around memory leak in svn's python bindings The svn.ra.get_log wrapper attaches the hash of changed paths for every log entry to a global memory pool, so memory consumption increases rapidly, with no way to free it. Our workaround is to call this function in a child process, and feed its results back over a pipe. The memory consumption of the child still grows huge (hundreds of megabytes), but at least it goes away once the reading-the-log phase is done.

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"""

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node.py - basic nodeid manipulation for mercurial

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Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>

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This software may be used and distributed according to the terms

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of the GNU General Public License, incorporated herein by reference.

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"""

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import binascii

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nullrev = -1

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nullid = "\0" * 20

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def hex(node):

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    return binascii.hexlify(node)

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def bin(node):

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    return binascii.unhexlify(node)

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def short(node):

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    return hex(node[:6])