Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/debugcommands.py @ 49249:b909dd35d9ab
deltas: add a debug-delta-find command to analyse delta search
See command documentation for details.
For some reason, pytype is confused by our usage of None/deltainfo variable, so
I had to quiet it.
| author | Pierre-Yves David <pierre-yves.david@octobus.net> |
|---|---|
| date | Fri, 20 May 2022 14:27:46 +0200 |
| parents | 13e523228623 |
| children | 63fd0282ad40 |
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| 49248:2bcf5e14bb7e | 49249:b909dd35d9ab |
|---|---|
| 71 registrar, | 71 registrar, |
| 72 repair, | 72 repair, |
| 73 repoview, | 73 repoview, |
| 74 requirements, | 74 requirements, |
| 75 revlog, | 75 revlog, |
| 76 revlogutils, | |
| 76 revset, | 77 revset, |
| 77 revsetlang, | 78 revsetlang, |
| 78 scmutil, | 79 scmutil, |
| 79 setdiscovery, | 80 setdiscovery, |
| 80 simplemerge, | 81 simplemerge, |
| 984 ) | 985 ) |
| 985 | 986 |
| 986 fm.plain(b'\n') | 987 fm.plain(b'\n') |
| 987 | 988 |
| 988 fm.end() | 989 fm.end() |
| 990 | |
| 991 | |
| 992 @command( | |
| 993 b'debug-delta-find', | |
| 994 cmdutil.debugrevlogopts + cmdutil.formatteropts, | |
| 995 _(b'-c|-m|FILE REV'), | |
| 996 optionalrepo=True, | |
| 997 ) | |
| 998 def debugdeltafind(ui, repo, arg_1, arg_2=None, **opts): | |
| 999 """display the computation to get to a valid delta for storing REV | |
| 1000 | |
| 1001 This command will replay the process used to find the "best" delta to store | |
| 1002 a revision and display information about all the steps used to get to that | |
| 1003 result. | |
| 1004 | |
| 1005 The revision use the revision number of the target storage (not changelog | |
| 1006 revision number). | |
| 1007 | |
| 1008 note: the process is initiated from a full text of the revision to store. | |
| 1009 """ | |
| 1010 opts = pycompat.byteskwargs(opts) | |
| 1011 if arg_2 is None: | |
| 1012 file_ = None | |
| 1013 rev = arg_1 | |
| 1014 else: | |
| 1015 file_ = arg_1 | |
| 1016 rev = arg_2 | |
| 1017 | |
| 1018 rev = int(rev) | |
| 1019 | |
| 1020 revlog = cmdutil.openrevlog(repo, b'debugdeltachain', file_, opts) | |
| 1021 | |
| 1022 deltacomputer = deltautil.deltacomputer( | |
| 1023 revlog, | |
| 1024 write_debug=ui.write, | |
| 1025 debug_search=True, | |
| 1026 ) | |
| 1027 | |
| 1028 node = revlog.node(rev) | |
| 1029 p1r, p2r = revlog.parentrevs(rev) | |
| 1030 p1 = revlog.node(p1r) | |
| 1031 p2 = revlog.node(p2r) | |
| 1032 btext = [revlog.revision(rev)] | |
| 1033 textlen = len(btext[0]) | |
| 1034 cachedelta = None | |
| 1035 flags = revlog.flags(rev) | |
| 1036 | |
| 1037 revinfo = revlogutils.revisioninfo( | |
| 1038 node, | |
| 1039 p1, | |
| 1040 p2, | |
| 1041 btext, | |
| 1042 textlen, | |
| 1043 cachedelta, | |
| 1044 flags, | |
| 1045 ) | |
| 1046 | |
| 1047 fh = revlog._datafp() | |
| 1048 deltacomputer.finddeltainfo(revinfo, fh, target_rev=rev) | |
| 989 | 1049 |
| 990 | 1050 |
| 991 @command( | 1051 @command( |
| 992 b'debugdirstate|debugstate', | 1052 b'debugdirstate|debugstate', |
| 993 [ | 1053 [ |