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annotate contrib/rewrite-log @ 5369:7530334bf301

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revlog: generate trivial deltas against null revision To avoid extra memory usage and performance issues with large files, generate a trivial delta header for deltas against the null revision rather than calling the usual delta generator. We append the delta header to meta rather than prepending it to data to avoid a large allocate and copy.
author Matt Mackall <mpm@selenic.com>
date Wed, 03 Oct 2007 17:17:27 -0500
parents 9ccc6be9ae4d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python
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2 import sys, os
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9ccc6be9ae4d update rewrite-log for tip ; chmod it
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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3 from mercurial import revlog, transaction, node, util
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5 f = sys.argv[1]
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6
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7 r1 = revlog.revlog(util.opener(os.getcwd(), audit=False), f + ".i", f + ".d")
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8 r2 = revlog.revlog(util.opener(os.getcwd(), audit=False), f + ".i2", f + ".d2")
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9
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10 tr = transaction.transaction(sys.stderr.write, open, "journal")
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12 for i in xrange(r1.count()):
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13 n = r1.node(i)
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14 p1, p2 = r1.parents(n)
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15 l = r1.linkrev(n)
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16 t = r1.revision(n)
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17 n2 = r2.addrevision(t, tr, l, p1, p2)
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18 tr.close()
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19
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20 os.rename(f + ".i", f + ".i.old")
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21 os.rename(f + ".d", f + ".d.old")
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22 os.rename(f + ".i2", f + ".i")
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23 os.rename(f + ".d2", f + ".d")