mercurial-scm/hg-stable: mercurial/revlog.py annotate

annotate mercurial/revlog.py @ 1941:7518823709a2

revlog.py: factorization and fixes for rev < 0 (nullid)

author	Benoit Boissinot <benoit.boissinot@ens-lyon.org>
date	Mon, 13 Mar 2006 03:54:23 +0100
parents	5ac811b720de
children	736b6c96bbbc

rev	line source
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	1 """
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	2 revlog.py - storage back-end for mercurial
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	3
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	4 This provides efficient delta storage with O(1) retrieve and append
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	5 and O(changes) merge between branches
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	6
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	7 Copyright 2005 Matt Mackall <mpm@selenic.com>
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	8
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	9 This software may be used and distributed according to the terms
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	10 of the GNU General Public License, incorporated herein by reference.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	11 """
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	12
1089 142b5d5ec9cc Break apart hg.py mpm@selenic.com parents: 1083 diff changeset	13 from node import *
1400 cf9a1233738a i18n first part: make '_' available for files who need it Benoit Boissinot <benoit.boissinot@ens-lyon.org parents: 1393 diff changeset	14 from i18n import gettext as _
1322 b3d44e9b3092 Make revlog constructor more discerning in its treatment of errors. Bryan O'Sullivan <bos@serpentine.com> parents: 1232 diff changeset	15 from demandload import demandload
1784 2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	16 demandload(globals(), "binascii errno heapq mdiff os sha struct zlib")
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	17
1091 d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	18 def hash(text, p1, p2):
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	19 """generate a hash from the given text and its parent hashes
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	20
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	21 This hash combines both the current file contents and its history
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	22 in a manner that makes it easy to distinguish nodes with the same
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	23 content in the revision graph.
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	24 """
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	25 l = [p1, p2]
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	26 l.sort()
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	27 s = sha.new(l[0])
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	28 s.update(l[1])
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	29 s.update(text)
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	30 return s.digest()
d62130f99a73 Move hash function back to revlog from node mpm@selenic.com parents: 1089 diff changeset	31
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	32 def compress(text):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	33 """ generate a possibly-compressed representation of text """
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	34 if not text: return ("", text)
112 aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	35 if len(text) < 44:
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	36 if text[0] == '\0': return ("", text)
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	37 return ('u', text)
112 aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	38 bin = zlib.compress(text)
aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	39 if len(bin) > len(text):
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	40 if text[0] == '\0': return ("", text)
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	41 return ('u', text)
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	42 return ("", bin)
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	43
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	44 def decompress(bin):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	45 """ decompress the given input """
112 aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	46 if not bin: return bin
aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	47 t = bin[0]
aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	48 if t == '\0': return bin
aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	49 if t == 'x': return zlib.decompress(bin)
aea6562add6c Make compression more intelligent: mpm@selenic.com parents: 98 diff changeset	50 if t == 'u': return bin[1:]
1853 5ac811b720de Fix some problems when working on broken repositories: Thomas Arendsen Hein <thomas@intevation.de> parents: 1784 diff changeset	51 raise RevlogError(_("unknown compression type %r") % t)
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	52
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	53 indexformat = ">4l20s20s20s"
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	54
1559 59b3639df0a9 Convert all classes to new-style classes by deriving them from object. Eric Hopper <hopper@omnifarious.org> parents: 1551 diff changeset	55 class lazyparser(object):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	56 """
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	57 this class avoids the need to parse the entirety of large indices
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	58
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	59 By default we parse and load 1000 entries at a time.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	60
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	61 If no position is specified, we load the whole index, and replace
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	62 the lazy objects in revlog with the underlying objects for
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	63 efficiency in cases where we look at most of the nodes.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	64 """
323 c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	65 def __init__(self, data, revlog):
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	66 self.data = data
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	67 self.s = struct.calcsize(indexformat)
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	68 self.l = len(data)/self.s
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	69 self.index = [None] * self.l
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	70 self.map = {nullid: -1}
323 c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	71 self.all = 0
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	72 self.revlog = revlog
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	73
1535 7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	74 def trunc(self, pos):
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	75 self.l = pos/self.s
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	76
323 c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	77 def load(self, pos=None):
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	78 if self.all: return
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	79 if pos is not None:
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	80 block = pos / 1000
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	81 i = block * 1000
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	82 end = min(self.l, i + 1000)
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	83 else:
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	84 self.all = 1
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	85 i = 0
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	86 end = self.l
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	87 self.revlog.index = self.index
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	88 self.revlog.nodemap = self.map
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	89
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	90 while i < end:
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	91 d = self.data[i * self.s: (i + 1) * self.s]
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	92 e = struct.unpack(indexformat, d)
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	93 self.index[i] = e
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	94 self.map[e[6]] = i
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	95 i += 1
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	96
1559 59b3639df0a9 Convert all classes to new-style classes by deriving them from object. Eric Hopper <hopper@omnifarious.org> parents: 1551 diff changeset	97 class lazyindex(object):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	98 """a lazy version of the index array"""
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	99 def __init__(self, parser):
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	100 self.p = parser
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	101 def __len__(self):
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	102 return len(self.p.index)
115 39b438eeb25a Make lazyindex load slightly faster mpm@selenic.com parents: 112 diff changeset	103 def load(self, pos):
1403 bc3e66edb04c lazyindex fix, make load handle negative indexes properly. Eric Hopper <hopper@omnifarious.org> parents: 1402 diff changeset	104 if pos < 0:
bc3e66edb04c lazyindex fix, make load handle negative indexes properly. Eric Hopper <hopper@omnifarious.org> parents: 1402 diff changeset	105 pos += len(self.p.index)
115 39b438eeb25a Make lazyindex load slightly faster mpm@selenic.com parents: 112 diff changeset	106 self.p.load(pos)
39b438eeb25a Make lazyindex load slightly faster mpm@selenic.com parents: 112 diff changeset	107 return self.p.index[pos]
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	108 def __getitem__(self, pos):
115 39b438eeb25a Make lazyindex load slightly faster mpm@selenic.com parents: 112 diff changeset	109 return self.p.index[pos] or self.load(pos)
1535 7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	110 def __delitem__(self, pos):
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	111 del self.p.index[pos]
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	112 def append(self, e):
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	113 self.p.index.append(e)
1535 7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	114 def trunc(self, pos):
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	115 self.p.trunc(pos)
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	116
1559 59b3639df0a9 Convert all classes to new-style classes by deriving them from object. Eric Hopper <hopper@omnifarious.org> parents: 1551 diff changeset	117 class lazymap(object):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	118 """a lazy version of the node map"""
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	119 def __init__(self, parser):
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	120 self.p = parser
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	121 def load(self, key):
323 c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	122 if self.p.all: return
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	123 n = self.p.data.find(key)
1214 34706a835d4a Smarter handling of revlog key errors mpm@selenic.com parents: 1201 diff changeset	124 if n < 0:
34706a835d4a Smarter handling of revlog key errors mpm@selenic.com parents: 1201 diff changeset	125 raise KeyError(key)
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	126 pos = n / self.p.s
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	127 self.p.load(pos)
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	128 def __contains__(self, key):
323 c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	129 self.p.load()
c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	130 return key in self.p.map
97 7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	131 def __iter__(self):
469 e205194ca7ef Various node id lookup tweaks mpm@selenic.com parents: 451 diff changeset	132 yield nullid
97 7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	133 for i in xrange(self.p.l):
7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	134 try:
7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	135 yield self.p.index[i][6]
7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	136 except:
7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	137 self.p.load(i)
7a2abee6b0c2 Add iterator to the lazymap code mpm@selenic.com parents: 94 diff changeset	138 yield self.p.index[i][6]
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	139 def __getitem__(self, key):
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	140 try:
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	141 return self.p.map[key]
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	142 except KeyError:
86 1b945e8ba67b Friendlier exceptions for unknown node errors mpm@selenic.com parents: 84 diff changeset	143 try:
1b945e8ba67b Friendlier exceptions for unknown node errors mpm@selenic.com parents: 84 diff changeset	144 self.load(key)
1b945e8ba67b Friendlier exceptions for unknown node errors mpm@selenic.com parents: 84 diff changeset	145 return self.p.map[key]
1b945e8ba67b Friendlier exceptions for unknown node errors mpm@selenic.com parents: 84 diff changeset	146 except KeyError:
1b945e8ba67b Friendlier exceptions for unknown node errors mpm@selenic.com parents: 84 diff changeset	147 raise KeyError("node " + hex(key))
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	148 def __setitem__(self, key, val):
d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	149 self.p.map[key] = val
1535 7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	150 def __delitem__(self, key):
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	151 del self.p.map[key]
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	152
1073 7b35a980b982 [PATCH] raise exceptions with Exception subclasses Bart Trojanowski <bart@jukie.net> parents: 1062 diff changeset	153 class RevlogError(Exception): pass
7b35a980b982 [PATCH] raise exceptions with Exception subclasses Bart Trojanowski <bart@jukie.net> parents: 1062 diff changeset	154
1559 59b3639df0a9 Convert all classes to new-style classes by deriving them from object. Eric Hopper <hopper@omnifarious.org> parents: 1551 diff changeset	155 class revlog(object):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	156 """
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	157 the underlying revision storage object
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	158
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	159 A revlog consists of two parts, an index and the revision data.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	160
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	161 The index is a file with a fixed record size containing
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	162 information on each revision, includings its nodeid (hash), the
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	163 nodeids of its parents, the position and offset of its data within
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	164 the data file, and the revision it's based on. Finally, each entry
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	165 contains a linkrev entry that can serve as a pointer to external
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	166 data.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	167
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	168 The revision data itself is a linear collection of data chunks.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	169 Each chunk represents a revision and is usually represented as a
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	170 delta against the previous chunk. To bound lookup time, runs of
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	171 deltas are limited to about 2 times the length of the original
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	172 version data. This makes retrieval of a version proportional to
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	173 its size, or O(1) relative to the number of revisions.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	174
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	175 Both pieces of the revlog are written to in an append-only
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	176 fashion, which means we never need to rewrite a file to insert or
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	177 remove data, and can use some simple techniques to avoid the need
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	178 for locking while reading.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	179 """
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	180 def __init__(self, opener, indexfile, datafile):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	181 """
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	182 create a revlog object
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	183
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	184 opener is a function that abstracts the file opening operation
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	185 and can be used to implement COW semantics or the like.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	186 """
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	187 self.indexfile = indexfile
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	188 self.datafile = datafile
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	189 self.opener = opener
1784 2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	190
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	191 self.indexstat = None
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	192 self.cache = None
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	193 self.chunkcache = None
1784 2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	194 self.load()
116 e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	195
1784 2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	196 def load(self):
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	197 try:
1784 2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	198 f = self.opener(self.indexfile)
1322 b3d44e9b3092 Make revlog constructor more discerning in its treatment of errors. Bryan O'Sullivan <bos@serpentine.com> parents: 1232 diff changeset	199 except IOError, inst:
b3d44e9b3092 Make revlog constructor more discerning in its treatment of errors. Bryan O'Sullivan <bos@serpentine.com> parents: 1232 diff changeset	200 if inst.errno != errno.ENOENT:
b3d44e9b3092 Make revlog constructor more discerning in its treatment of errors. Bryan O'Sullivan <bos@serpentine.com> parents: 1232 diff changeset	201 raise
76 d993ebd69d28 Add lazy{parser,index,map} to speed up processing of index files mpm@selenic.com parents: 73 diff changeset	202 i = ""
1784 2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	203 else:
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	204 try:
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	205 st = os.fstat(f.fileno())
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	206 except AttributeError, inst:
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	207 st = None
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	208 else:
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	209 oldst = self.indexstat
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	210 if (oldst and st.st_dev == oldst.st_dev
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	211 and st.st_ino == oldst.st_ino
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	212 and st.st_mtime == oldst.st_mtime
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	213 and st.st_ctime == oldst.st_ctime):
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	214 return
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	215 self.indexstat = st
2e0a288ca93e revalidate revlog data after locking the repo (issue132) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1749 diff changeset	216 i = f.read()
116 e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	217
1660 b2df93c56ac4 Fix revlog signature check for empty revlogs Matt Mackall <mpm@selenic.com> parents: 1659 diff changeset	218 if i and i[:4] != "\0\0\0\0":
1659 bfa90d9a3b77 Add revlog version signature check Matt Mackall <mpm@selenic.com> parents: 1598 diff changeset	219 raise RevlogError(_("incompatible revlog signature on %s") %
bfa90d9a3b77 Add revlog version signature check Matt Mackall <mpm@selenic.com> parents: 1598 diff changeset	220 self.indexfile)
bfa90d9a3b77 Add revlog version signature check Matt Mackall <mpm@selenic.com> parents: 1598 diff changeset	221
116 e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	222 if len(i) > 10000:
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	223 # big index, let's parse it on demand
323 c6f0673ab7e9 lazyparser speed ups mpm@selenic.com parents: 306 diff changeset	224 parser = lazyparser(i, self)
116 e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	225 self.index = lazyindex(parser)
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	226 self.nodemap = lazymap(parser)
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	227 else:
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	228 s = struct.calcsize(indexformat)
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	229 l = len(i) / s
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	230 self.index = [None] * l
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	231 m = [None] * l
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	232
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	233 n = 0
1667 daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	234 for f in xrange(0, l * s, s):
116 e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	235 # offset, size, base, linkrev, p1, p2, nodeid
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	236 e = struct.unpack(indexformat, i[f:f + s])
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	237 m[n] = (e[6], n)
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	238 self.index[n] = e
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	239 n += 1
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	240
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	241 self.nodemap = dict(m)
e484cd5ec282 Only use lazy indexing for big indices and avoid the overhead of the mpm@selenic.com parents: 115 diff changeset	242 self.nodemap[nullid] = -1
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	243
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	244 def tip(self): return self.node(len(self.index) - 1)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	245 def count(self): return len(self.index)
26 9cf83bf9ad38 Simplify integrity checking mpm@selenic.com parents: 14 diff changeset	246 def node(self, rev): return (rev < 0) and nullid or self.index[rev][6]
1201 59bfbdbc38f6 revlog: raise informative exception if file is missing. Bryan O'Sullivan <bos@serpentine.com> parents: 1099 diff changeset	247 def rev(self, node):
59bfbdbc38f6 revlog: raise informative exception if file is missing. Bryan O'Sullivan <bos@serpentine.com> parents: 1099 diff changeset	248 try:
59bfbdbc38f6 revlog: raise informative exception if file is missing. Bryan O'Sullivan <bos@serpentine.com> parents: 1099 diff changeset	249 return self.nodemap[node]
59bfbdbc38f6 revlog: raise informative exception if file is missing. Bryan O'Sullivan <bos@serpentine.com> parents: 1099 diff changeset	250 except KeyError:
1402 9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	251 raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node)))
1201 59bfbdbc38f6 revlog: raise informative exception if file is missing. Bryan O'Sullivan <bos@serpentine.com> parents: 1099 diff changeset	252 def linkrev(self, node): return self.index[self.rev(node)][3]
2 ecf3fd948051 Handle nullid better for ancestor mpm@selenic.com parents: 0 diff changeset	253 def parents(self, node):
ecf3fd948051 Handle nullid better for ancestor mpm@selenic.com parents: 0 diff changeset	254 if node == nullid: return (nullid, nullid)
1201 59bfbdbc38f6 revlog: raise informative exception if file is missing. Bryan O'Sullivan <bos@serpentine.com> parents: 1099 diff changeset	255 return self.index[self.rev(node)][4:6]
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	256
1941 7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	257 def start(self, rev): return (rev < 0) and -1 or self.index[rev][0]
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	258 def length(self, rev):
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	259 if rev < 0:
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	260 return 0
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	261 else:
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	262 return self.index[rev][1]
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	263 def end(self, rev): return self.start(rev) + self.length(rev)
1941 7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	264 def base(self, rev): return (rev < 0) and rev or self.index[rev][2]
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	265
1074 55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	266 def reachable(self, rev, stop=None):
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	267 reachable = {}
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	268 visit = [rev]
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	269 reachable[rev] = 1
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	270 if stop:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	271 stopn = self.rev(stop)
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	272 else:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	273 stopn = 0
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	274 while visit:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	275 n = visit.pop(0)
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	276 if n == stop:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	277 continue
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	278 if n == nullid:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	279 continue
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	280 for p in self.parents(n):
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	281 if self.rev(p) < stopn:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	282 continue
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	283 if p not in reachable:
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	284 reachable[p] = 1
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	285 visit.append(p)
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	286 return reachable
55bf5cfde69e Add revlog.reachable to find a graph of ancestors for a given rev mason@suse.com parents: 1073 diff changeset	287
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	288 def nodesbetween(self, roots=None, heads=None):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	289 """Return a tuple containing three elements. Elements 1 and 2 contain
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	290 a final list bases and heads after all the unreachable ones have been
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	291 pruned. Element 0 contains a topologically sorted list of all
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	292
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	293 nodes that satisfy these constraints:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	294 1. All nodes must be descended from a node in roots (the nodes on
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	295 roots are considered descended from themselves).
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	296 2. All nodes must also be ancestors of a node in heads (the nodes in
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	297 heads are considered to be their own ancestors).
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	298
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	299 If roots is unspecified, nullid is assumed as the only root.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	300 If heads is unspecified, it is taken to be the output of the
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	301 heads method (i.e. a list of all nodes in the repository that
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	302 have no children)."""
1463 26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	303 nonodes = ([], [], [])
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	304 if roots is not None:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	305 roots = list(roots)
1463 26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	306 if not roots:
26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	307 return nonodes
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	308 lowestrev = min([self.rev(n) for n in roots])
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	309 else:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	310 roots = [nullid] # Everybody's a descendent of nullid
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	311 lowestrev = -1
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	312 if (lowestrev == -1) and (heads is None):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	313 # We want _all_ the nodes!
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	314 return ([self.node(r) for r in xrange(0, self.count())],
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	315 [nullid], list(self.heads()))
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	316 if heads is None:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	317 # All nodes are ancestors, so the latest ancestor is the last
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	318 # node.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	319 highestrev = self.count() - 1
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	320 # Set ancestors to None to signal that every node is an ancestor.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	321 ancestors = None
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	322 # Set heads to an empty dictionary for later discovery of heads
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	323 heads = {}
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	324 else:
1463 26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	325 heads = list(heads)
26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	326 if not heads:
26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	327 return nonodes
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	328 ancestors = {}
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	329 # Start at the top and keep marking parents until we're done.
1463 26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	330 nodestotag = heads[:]
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	331 # Turn heads into a dictionary so we can remove 'fake' heads.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	332 # Also, later we will be using it to filter out the heads we can't
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	333 # find from roots.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	334 heads = dict.fromkeys(heads, 0)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	335 # Remember where the top was so we can use it as a limit later.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	336 highestrev = max([self.rev(n) for n in nodestotag])
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	337 while nodestotag:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	338 # grab a node to tag
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	339 n = nodestotag.pop()
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	340 # Never tag nullid
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	341 if n == nullid:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	342 continue
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	343 # A node's revision number represents its place in a
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	344 # topologically sorted list of nodes.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	345 r = self.rev(n)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	346 if r >= lowestrev:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	347 if n not in ancestors:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	348 # If we are possibly a descendent of one of the roots
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	349 # and we haven't already been marked as an ancestor
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	350 ancestors[n] = 1 # Mark as ancestor
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	351 # Add non-nullid parents to list of nodes to tag.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	352 nodestotag.extend([p for p in self.parents(n) if
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	353 p != nullid])
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	354 elif n in heads: # We've seen it before, is it a fake head?
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	355 # So it is, real heads should not be the ancestors of
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	356 # any other heads.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	357 heads.pop(n)
1459 106fdec8e1fb Fix small bug in nodesbetween if heads is [nullid]. Eric Hopper <hopper@omnifarious.org> parents: 1458 diff changeset	358 if not ancestors:
1463 26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	359 return nonodes
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	360 # Now that we have our set of ancestors, we want to remove any
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	361 # roots that are not ancestors.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	362
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	363 # If one of the roots was nullid, everything is included anyway.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	364 if lowestrev > -1:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	365 # But, since we weren't, let's recompute the lowest rev to not
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	366 # include roots that aren't ancestors.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	367
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	368 # Filter out roots that aren't ancestors of heads
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	369 roots = [n for n in roots if n in ancestors]
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	370 # Recompute the lowest revision
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	371 if roots:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	372 lowestrev = min([self.rev(n) for n in roots])
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	373 else:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	374 # No more roots? Return empty list
1463 26e73acc0cdf Fix to handle case of empty list for roots or heads in nodesbetween. Eric Hopper <hopper@omnifarious.org> parents: 1459 diff changeset	375 return nonodes
1457 518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	376 else:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	377 # We are descending from nullid, and don't need to care about
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	378 # any other roots.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	379 lowestrev = -1
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	380 roots = [nullid]
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	381 # Transform our roots list into a 'set' (i.e. a dictionary where the
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	382 # values don't matter.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	383 descendents = dict.fromkeys(roots, 1)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	384 # Also, keep the original roots so we can filter out roots that aren't
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	385 # 'real' roots (i.e. are descended from other roots).
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	386 roots = descendents.copy()
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	387 # Our topologically sorted list of output nodes.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	388 orderedout = []
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	389 # Don't start at nullid since we don't want nullid in our output list,
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	390 # and if nullid shows up in descedents, empty parents will look like
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	391 # they're descendents.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	392 for r in xrange(max(lowestrev, 0), highestrev + 1):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	393 n = self.node(r)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	394 isdescendent = False
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	395 if lowestrev == -1: # Everybody is a descendent of nullid
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	396 isdescendent = True
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	397 elif n in descendents:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	398 # n is already a descendent
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	399 isdescendent = True
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	400 # This check only needs to be done here because all the roots
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	401 # will start being marked is descendents before the loop.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	402 if n in roots:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	403 # If n was a root, check if it's a 'real' root.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	404 p = tuple(self.parents(n))
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	405 # If any of its parents are descendents, it's not a root.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	406 if (p[0] in descendents) or (p[1] in descendents):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	407 roots.pop(n)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	408 else:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	409 p = tuple(self.parents(n))
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	410 # A node is a descendent if either of its parents are
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	411 # descendents. (We seeded the dependents list with the roots
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	412 # up there, remember?)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	413 if (p[0] in descendents) or (p[1] in descendents):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	414 descendents[n] = 1
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	415 isdescendent = True
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	416 if isdescendent and ((ancestors is None) or (n in ancestors)):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	417 # Only include nodes that are both descendents and ancestors.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	418 orderedout.append(n)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	419 if (ancestors is not None) and (n in heads):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	420 # We're trying to figure out which heads are reachable
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	421 # from roots.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	422 # Mark this head as having been reached
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	423 heads[n] = 1
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	424 elif ancestors is None:
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	425 # Otherwise, we're trying to discover the heads.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	426 # Assume this is a head because if it isn't, the next step
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	427 # will eventually remove it.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	428 heads[n] = 1
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	429 # But, obviously its parents aren't.
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	430 for p in self.parents(n):
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	431 heads.pop(p, None)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	432 heads = [n for n in heads.iterkeys() if heads[n] != 0]
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	433 roots = roots.keys()
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	434 assert orderedout
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	435 assert roots
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	436 assert heads
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	437 return (orderedout, roots, heads)
518da3c3b6ce This implements the nodesbetween method, and it removes the newer method Eric Hopper <hopper@omnifarious.org> parents: 1351 diff changeset	438
1551 e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	439 def heads(self, start=None):
1550 ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	440 """return the list of all nodes that have no children
1551 e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	441
e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	442 if start is specified, only heads that are descendants of
e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	443 start will be returned
e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	444
e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	445 """
e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	446 if start is None:
e793cbc8be00 Fixes to "hg heads -r FOO": Thomas Arendsen Hein <thomas@intevation.de> parents: 1550 diff changeset	447 start = nullid
1550 ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	448 reachable = {start: 1}
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	449 heads = {start: 1}
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	450 startrev = self.rev(start)
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	451
1550 ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	452 for r in xrange(startrev + 1, self.count()):
221 2bfe525ef6ca Beginning of multi-head support mpm@selenic.com parents: 208 diff changeset	453 n = self.node(r)
2bfe525ef6ca Beginning of multi-head support mpm@selenic.com parents: 208 diff changeset	454 for pn in self.parents(n):
1550 ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	455 if pn in reachable:
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	456 reachable[n] = 1
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	457 heads[n] = 1
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	458 if pn in heads:
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	459 del heads[pn]
ccb9b62de892 add a -r/--rev option to heads to show only heads descendant from rev Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1535 diff changeset	460 return heads.keys()
370 c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	461
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	462 def children(self, node):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	463 """find the children of a given node"""
370 c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	464 c = []
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	465 p = self.rev(node)
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	466 for r in range(p + 1, self.count()):
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	467 n = self.node(r)
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	468 for pn in self.parents(n):
854 473c030d34a6 Fixed revlog.children. Tristan Wibberley <tristan@wibberley.org> parents: 655 diff changeset	469 if pn == node:
473c030d34a6 Fixed revlog.children. Tristan Wibberley <tristan@wibberley.org> parents: 655 diff changeset	470 c.append(n)
370 c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	471 continue
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	472 elif pn == nullid:
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	473 continue
c90385d82aec revlog: add a children function mpm@selenic.com parents: 330 diff changeset	474 return c
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	475
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	476 def lookup(self, id):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	477 """locate a node based on revision number or subset of hex nodeid"""
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	478 try:
da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	479 rev = int(id)
469 e205194ca7ef Various node id lookup tweaks mpm@selenic.com parents: 451 diff changeset	480 if str(rev) != id: raise ValueError
e205194ca7ef Various node id lookup tweaks mpm@selenic.com parents: 451 diff changeset	481 if rev < 0: rev = self.count() + rev
476 0a338d506268 Really _call_ method revlog.count in revlog.lookup() Thomas Arendsen Hein <thomas@intevation.de> parents: 469 diff changeset	482 if rev < 0 or rev >= self.count(): raise ValueError
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	483 return self.node(rev)
469 e205194ca7ef Various node id lookup tweaks mpm@selenic.com parents: 451 diff changeset	484 except (ValueError, OverflowError):
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	485 c = []
da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	486 for n in self.nodemap:
469 e205194ca7ef Various node id lookup tweaks mpm@selenic.com parents: 451 diff changeset	487 if hex(n).startswith(id):
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	488 c.append(n)
1402 9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	489 if len(c) > 1: raise RevlogError(_("Ambiguous identifier"))
9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	490 if len(c) < 1: raise RevlogError(_("No match found"))
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	491 return c[0]
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	492
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	493 return None
da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	494
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	495 def diff(self, a, b):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	496 """return a delta between two revisions"""
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	497 return mdiff.textdiff(a, b)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	498
73 ee1cbe841e01 Change revlog to use new patch code mpm@selenic.com parents: 71 diff changeset	499 def patches(self, t, pl):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	500 """apply a list of patches to a string"""
73 ee1cbe841e01 Change revlog to use new patch code mpm@selenic.com parents: 71 diff changeset	501 return mdiff.patches(t, pl)
ee1cbe841e01 Change revlog to use new patch code mpm@selenic.com parents: 71 diff changeset	502
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	503 def chunk(self, rev):
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	504 start, length = self.start(rev), self.length(rev)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	505 end = start + length
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	506
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	507 def loadcache():
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	508 cache_length = max(4096 * 1024, length) # 4Mo
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	509 df = self.opener(self.datafile)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	510 df.seek(start)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	511 self.chunkcache = (start, df.read(cache_length))
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	512
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	513 if not self.chunkcache:
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	514 loadcache()
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	515
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	516 cache_start = self.chunkcache[0]
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	517 cache_end = cache_start + len(self.chunkcache[1])
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	518 if start >= cache_start and end <= cache_end:
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	519 # it is cached
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	520 offset = start - cache_start
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	521 else:
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	522 loadcache()
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	523 offset = 0
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	524
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	525 #def checkchunk():
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	526 # df = self.opener(self.datafile)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	527 # df.seek(start)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	528 # return df.read(length)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	529 #assert s == checkchunk()
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	530 return decompress(self.chunkcache[1][offset:offset + length])
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	531
119 c7a66f9752a4 Add code to retrieve or construct a revlog delta mpm@selenic.com parents: 117 diff changeset	532 def delta(self, node):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	533 """return or calculate a delta between a node and its predecessor"""
119 c7a66f9752a4 Add code to retrieve or construct a revlog delta mpm@selenic.com parents: 117 diff changeset	534 r = self.rev(node)
1941 7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	535 return self.revdiff(r - 1, r)
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	536
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	537 def revdiff(self, rev1, rev2):
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	538 """return or calculate a delta between two revisions"""
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	539 b1 = self.base(rev1)
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	540 b2 = self.base(rev2)
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	541 if b1 == b2 and rev1 + 1 == rev2:
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	542 return self.chunk(rev2)
119 c7a66f9752a4 Add code to retrieve or construct a revlog delta mpm@selenic.com parents: 117 diff changeset	543 else:
1941 7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	544 return self.diff(self.revision(self.node(rev1)),
7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	545 self.revision(self.node(rev2)))
119 c7a66f9752a4 Add code to retrieve or construct a revlog delta mpm@selenic.com parents: 117 diff changeset	546
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	547 def revision(self, node):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	548 """return an uncompressed revision of a given"""
36 da28286bf6b7 Add smart node lookup by substring or by rev number mpm@selenic.com parents: 26 diff changeset	549 if node == nullid: return ""
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	550 if self.cache and self.cache[0] == node: return self.cache[2]
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	551
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	552 # look up what we need to read
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	553 text = None
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	554 rev = self.rev(node)
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	555 base = self.base(rev)
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	556
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	557 # do we have useful data cached?
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	558 if self.cache and self.cache[1] >= base and self.cache[1] < rev:
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	559 base = self.cache[1]
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	560 text = self.cache[2]
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	561 else:
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	562 text = self.chunk(base)
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	563
71 47c9a869adee Add mdiff.patches to speed up applying thousands of patches to the manifest mpm@selenic.com parents: 67 diff changeset	564 bins = []
64 b3e2ddff0159 Diff in subdirectories from Jake Edge mpm@selenic.com parents: 46 diff changeset	565 for r in xrange(base + 1, rev + 1):
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	566 bins.append(self.chunk(r))
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	567
1941 7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	568 text = self.patches(text, bins)
71 47c9a869adee Add mdiff.patches to speed up applying thousands of patches to the manifest mpm@selenic.com parents: 67 diff changeset	569
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	570 p1, p2 = self.parents(node)
26 9cf83bf9ad38 Simplify integrity checking mpm@selenic.com parents: 14 diff changeset	571 if node != hash(text, p1, p2):
1402 9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	572 raise RevlogError(_("integrity check failed on %s:%d")
98 3dde7c87e36d Add paranoia to diff code mpm@selenic.com parents: 97 diff changeset	573 % (self.datafile, rev))
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	574
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	575 self.cache = (node, rev, text)
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	576 return text
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	577
644 6ebe118280bd Performance enhancements for manifest.add() mason@suse.com parents: 547 diff changeset	578 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	579 """add a revision to the log
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	580
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	581 text - the revision data to add
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	582 transaction - the transaction object used for rollback
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	583 link - the linkrev data to add
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	584 p1, p2 - the parent nodeids of the revision
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	585 d - an optional precomputed delta
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	586 """
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	587 if text is None: text = ""
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	588 if p1 is None: p1 = self.tip()
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	589 if p2 is None: p2 = nullid
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	590
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	591 node = hash(text, p1, p2)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	592
301 5add718d92db revlog: allow duplicates mpm@selenic.com parents: 243 diff changeset	593 if node in self.nodemap:
5add718d92db revlog: allow duplicates mpm@selenic.com parents: 243 diff changeset	594 return node
5add718d92db revlog: allow duplicates mpm@selenic.com parents: 243 diff changeset	595
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	596 n = self.count()
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	597 t = n - 1
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	598
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	599 if n:
64 b3e2ddff0159 Diff in subdirectories from Jake Edge mpm@selenic.com parents: 46 diff changeset	600 base = self.base(t)
b3e2ddff0159 Diff in subdirectories from Jake Edge mpm@selenic.com parents: 46 diff changeset	601 start = self.start(base)
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	602 end = self.end(t)
644 6ebe118280bd Performance enhancements for manifest.add() mason@suse.com parents: 547 diff changeset	603 if not d:
6ebe118280bd Performance enhancements for manifest.add() mason@suse.com parents: 547 diff changeset	604 prev = self.revision(self.tip())
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	605 d = self.diff(prev, str(text))
98 3dde7c87e36d Add paranoia to diff code mpm@selenic.com parents: 97 diff changeset	606 data = compress(d)
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	607 l = len(data[1]) + len(data[0])
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	608 dist = end - start + l
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	609
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	610 # full versions are inserted when the needed deltas
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	611 # become comparable to the uncompressed text
64 b3e2ddff0159 Diff in subdirectories from Jake Edge mpm@selenic.com parents: 46 diff changeset	612 if not n or dist > len(text) * 2:
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	613 data = compress(text)
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	614 l = len(data[1]) + len(data[0])
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	615 base = n
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	616 else:
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	617 base = self.base(t)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	618
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	619 offset = 0
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	620 if t >= 0:
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	621 offset = self.end(t)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	622
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	623 e = (offset, l, base, link, p1, p2, node)
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	624
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	625 self.index.append(e)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	626 self.nodemap[node] = n
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	627 entry = struct.pack(indexformat, *e)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	628
26 9cf83bf9ad38 Simplify integrity checking mpm@selenic.com parents: 14 diff changeset	629 transaction.add(self.datafile, e[0])
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	630 f = self.opener(self.datafile, "a")
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	631 if data[0]:
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	632 f.write(data[0])
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	633 f.write(data[1])
41 df3f46253878 Fix truncate logic for indices again mpm@selenic.com parents: 36 diff changeset	634 transaction.add(self.indexfile, n * len(entry))
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	635 self.opener(self.indexfile, "a").write(entry)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	636
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	637 self.cache = (node, n, text)
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	638 return node
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	639
9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	640 def ancestor(self, a, b):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	641 """calculate the least common ancestor of nodes a and b"""
147 b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	642 # calculate the distance of every node from root
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	643 dist = {nullid: 0}
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	644 for i in xrange(self.count()):
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	645 n = self.node(i)
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	646 p1, p2 = self.parents(n)
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	647 dist[n] = max(dist[p1], dist[p2]) + 1
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	648
147 b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	649 # traverse ancestors in order of decreasing distance from root
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	650 def ancestors(node):
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	651 # we store negative distances because heap returns smallest member
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	652 h = [(-dist[node], node)]
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	653 seen = {}
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	654 while h:
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	655 d, n = heapq.heappop(h)
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	656 if n not in seen:
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	657 seen[n] = 1
1351 0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	658 yield (-d, n)
147 b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	659 for p in self.parents(n):
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	660 heapq.heappush(h, (-dist[p], p))
45 f2b2d5daec30 Fix recursion depth trouble with ancestor algorithm mpm@selenic.com parents: 41 diff changeset	661
1351 0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	662 def generations(node):
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	663 sg, s = None, {}
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	664 for g,n in ancestors(node):
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	665 if g != sg:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	666 if sg:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	667 yield sg, s
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	668 sg, s = g, {n:1}
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	669 else:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	670 s[n] = 1
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	671 yield sg, s
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	672
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	673 x = generations(a)
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	674 y = generations(b)
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	675 gx = x.next()
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	676 gy = y.next()
45 f2b2d5daec30 Fix recursion depth trouble with ancestor algorithm mpm@selenic.com parents: 41 diff changeset	677
147 b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	678 # increment each ancestor list until it is closer to root than
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	679 # the other, or they match
b6d8ed7aeba0 A new ancestor algorithm mpm@selenic.com parents: 126 diff changeset	680 while 1:
1351 0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	681 #print "ancestor gen %s %s" % (gx[0], gy[0])
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	682 if gx[0] == gy[0]:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	683 # find the intersection
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	684 i = [ n for n in gx[1] if n in gy[1] ]
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	685 if i:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	686 return i[0]
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	687 else:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	688 #print "next"
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	689 gy = y.next()
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	690 gx = x.next()
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	691 elif gx[0] < gy[0]:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	692 #print "next y"
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	693 gy = y.next()
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	694 else:
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	695 #print "next x"
0e2be889ccd7 Repair ancestor logic, fix up test cases Matt Mackall <mpm@selenic.com> parents: 1325 diff changeset	696 gx = x.next()
0 9117c6561b0b Add back links from file revisions to changeset revisions mpm@selenic.com parents: diff changeset	697
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	698 def group(self, nodelist, lookup, infocollect=None):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	699 """calculate a delta group
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	700
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	701 Given a list of changeset revs, return a set of deltas and
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	702 metadata corresponding to nodes. the first delta is
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	703 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	704 have this parent as it has all history before these
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	705 changesets. parent is parent[0]
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	706 """
1458 1033892bbb87 This changes the revlog.group and re-implements the localrepo.changeroup Eric Hopper <hopper@omnifarious.org> parents: 1457 diff changeset	707 revs = [self.rev(n) for n in nodelist]
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	708
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	709 # if we don't have any revisions touched by these changesets, bail
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	710 if not revs:
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	711 yield struct.pack(">l", 0)
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	712 return
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	713
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	714 # add the parent of the first rev
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	715 p = self.parents(self.node(revs[0]))[0]
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	716 revs.insert(0, self.rev(p))
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	717
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	718 # build deltas
71 47c9a869adee Add mdiff.patches to speed up applying thousands of patches to the manifest mpm@selenic.com parents: 67 diff changeset	719 for d in xrange(0, len(revs) - 1):
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	720 a, b = revs[d], revs[d + 1]
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	721 nb = self.node(b)
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	722
1458 1033892bbb87 This changes the revlog.group and re-implements the localrepo.changeroup Eric Hopper <hopper@omnifarious.org> parents: 1457 diff changeset	723 if infocollect is not None:
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	724 infocollect(nb)
1458 1033892bbb87 This changes the revlog.group and re-implements the localrepo.changeroup Eric Hopper <hopper@omnifarious.org> parents: 1457 diff changeset	725
1941 7518823709a2 revlog.py: factorization and fixes for rev < 0 (nullid) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1853 diff changeset	726 d = self.revdiff(a, b)
1598 14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	727 p = self.parents(nb)
14d1f1868bf6 cleanup of revlog.group when repository is local Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1559 diff changeset	728 meta = nb + p[0] + p[1] + lookup(nb)
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	729 l = struct.pack(">l", len(meta) + len(d) + 4)
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	730 yield l
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	731 yield meta
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	732 yield d
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	733
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	734 yield struct.pack(">l", 0)
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	735
1062 6d5a62a549fa pep-0008 cleanup benoit.boissinot@ens-lyon.fr parents: 902 diff changeset	736 def addgroup(self, revs, linkmapper, transaction, unique=0):
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	737 """
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	738 add a delta group
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	739
1083 30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	740 given a set of deltas, add them to the revision log. the
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	741 first delta is against its parent, which should be in our
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	742 log, the rest are against the previous delta.
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	743 """
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	744
30974cf73435 Add some docstrings to revlog.py mpm@selenic.com parents: 1074 diff changeset	745 #track the base of the current delta log
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	746 r = self.count()
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	747 t = r - 1
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	748 node = nullid
515 03f27b1381f9 Whitespace cleanups mpm@selenic.com parents: 484 diff changeset	749
655 b3bba126b04a Fix out of range regression Matt Mackall <mpm@selenic.com> parents: 653 diff changeset	750 base = prev = -1
653 94cdd02792b5 Fix corruption resulting from skipping parts of a revision group Matt Mackall <mpm@selenic.com> parents: 651 diff changeset	751 start = end = measure = 0
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	752 if r:
1749 d457fec76ab0 fix warnings from pychecker (unused variables and shadowing) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1711 diff changeset	753 base = self.base(t)
d457fec76ab0 fix warnings from pychecker (unused variables and shadowing) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1711 diff changeset	754 start = self.start(base)
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	755 end = self.end(t)
1749 d457fec76ab0 fix warnings from pychecker (unused variables and shadowing) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1711 diff changeset	756 measure = self.length(base)
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	757 prev = self.tip()
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	758
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	759 transaction.add(self.datafile, end)
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	760 transaction.add(self.indexfile, r * struct.calcsize(indexformat))
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	761 dfh = self.opener(self.datafile, "a")
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	762 ifh = self.opener(self.indexfile, "a")
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	763
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	764 # loop through our set of deltas
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	765 chain = None
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	766 for chunk in revs:
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	767 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80])
94 7daef883134f Refactor merge code mpm@selenic.com parents: 86 diff changeset	768 link = linkmapper(cs)
77 bed15e766511 Fix bug in lazymap code mpm@selenic.com parents: 76 diff changeset	769 if node in self.nodemap:
224 ccbcc4d76f81 fix bad assumption about uniqueness of file versions mpm@selenic.com parents: 221 diff changeset	770 # this can happen if two branches make the same change
1218 cde6818e082a Add preliminary support for the bundle and unbundle commands mpm@selenic.com parents: 1214 diff changeset	771 # if unique:
1402 9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	772 # raise RevlogError(_("already have %s") % hex(node[:4]))
653 94cdd02792b5 Fix corruption resulting from skipping parts of a revision group Matt Mackall <mpm@selenic.com> parents: 651 diff changeset	773 chain = node
224 ccbcc4d76f81 fix bad assumption about uniqueness of file versions mpm@selenic.com parents: 221 diff changeset	774 continue
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	775 delta = chunk[80:]
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	776
1509 46a07392cf28 Add safety check for addgroup Matt Mackall <mpm@selenic.com> parents: 1494 diff changeset	777 for p in (p1, p2):
46a07392cf28 Add safety check for addgroup Matt Mackall <mpm@selenic.com> parents: 1494 diff changeset	778 if not p in self.nodemap:
46a07392cf28 Add safety check for addgroup Matt Mackall <mpm@selenic.com> parents: 1494 diff changeset	779 raise RevlogError(_("unknown parent %s") % short(p1))
46a07392cf28 Add safety check for addgroup Matt Mackall <mpm@selenic.com> parents: 1494 diff changeset	780
192 5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	781 if not chain:
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	782 # retrieve the parent revision of the delta chain
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	783 chain = p1
5d8553352d2e Changes to network protocol mpm@selenic.com parents: 155 diff changeset	784 if not chain in self.nodemap:
1402 9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	785 raise RevlogError(_("unknown base %s") % short(chain[:4]))
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	786
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	787 # full versions are inserted when the needed deltas become
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	788 # comparable to the uncompressed text or when the previous
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	789 # version is not the one we have a delta against. We use
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	790 # the size of the previous full rev as a proxy for the
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	791 # current size.
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	792
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	793 if chain == prev:
1533 3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	794 tempd = compress(delta)
3d11f81c9145 Reduce string duplication in compression code mason@suse.com parents: 1509 diff changeset	795 cdelta = tempd[0] + tempd[1]
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	796
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	797 if chain != prev or (end - start + len(cdelta)) > measure * 2:
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	798 # flush our writes here so we can read it in revision
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	799 dfh.flush()
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	800 ifh.flush()
65 d40cc5aacc31 Fix up a bunch of bugs in the new merge code mpm@selenic.com parents: 64 diff changeset	801 text = self.revision(chain)
73 ee1cbe841e01 Change revlog to use new patch code mpm@selenic.com parents: 71 diff changeset	802 text = self.patches(text, [delta])
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	803 chk = self.addrevision(text, transaction, link, p1, p2)
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	804 if chk != node:
1402 9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1400 diff changeset	805 raise RevlogError(_("consistency error adding group"))
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	806 measure = len(text)
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	807 else:
1749 d457fec76ab0 fix warnings from pychecker (unused variables and shadowing) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1711 diff changeset	808 e = (end, len(cdelta), base, link, p1, p2, node)
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	809 self.index.append(e)
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	810 self.nodemap[node] = r
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	811 dfh.write(cdelta)
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	812 ifh.write(struct.pack(indexformat, *e))
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	813
65 d40cc5aacc31 Fix up a bunch of bugs in the new merge code mpm@selenic.com parents: 64 diff changeset	814 t, r, chain, prev = r, r + 1, node, node
1749 d457fec76ab0 fix warnings from pychecker (unused variables and shadowing) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1711 diff changeset	815 base = self.base(t)
d457fec76ab0 fix warnings from pychecker (unused variables and shadowing) Benoit Boissinot <benoit.boissinot@ens-lyon.org> parents: 1711 diff changeset	816 start = self.start(base)
46 93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	817 end = self.end(t)
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	818
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	819 dfh.close()
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	820 ifh.close()
93e868fa0db8 Add changegroup support mpm@selenic.com parents: 45 diff changeset	821 return node
1493 1a216cb4ee64 verify: add check for mismatch of index and data length Matt Mackall <mpm@selenic.com> parents: 1469 diff changeset	822
1535 7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	823 def strip(self, rev, minlink):
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	824 if self.count() == 0 or rev >= self.count():
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	825 return
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	826
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	827 # When stripping away a revision, we need to make sure it
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	828 # does not actually belong to an older changeset.
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	829 # The minlink parameter defines the oldest revision
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	830 # we're allowed to strip away.
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	831 while minlink > self.index[rev][3]:
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	832 rev += 1
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	833 if rev >= self.count():
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	834 return
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	835
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	836 # first truncate the files on disk
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	837 end = self.start(rev)
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	838 self.opener(self.datafile, "a").truncate(end)
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	839 end = rev * struct.calcsize(indexformat)
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	840 self.opener(self.indexfile, "a").truncate(end)
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	841
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	842 # then reset internal state in memory to forget those revisions
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	843 self.cache = None
1711 8959700c2b19 revlog.strip should clear the chunkcache mason@suse.com parents: 1667 diff changeset	844 self.chunkcache = None
1535 7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	845 for p in self.index[rev:]:
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	846 del self.nodemap[p[6]]
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	847 del self.index[rev:]
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	848
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	849 # truncating the lazyindex also truncates the lazymap.
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	850 if isinstance(self.index, lazyindex):
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	851 self.index.trunc(end)
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	852
7ae0ce7a3dc4 Add revlog.strip to truncate away revisions. mason@suse.com parents: 1533 diff changeset	853
1493 1a216cb4ee64 verify: add check for mismatch of index and data length Matt Mackall <mpm@selenic.com> parents: 1469 diff changeset	854 def checksize(self):
1a216cb4ee64 verify: add check for mismatch of index and data length Matt Mackall <mpm@selenic.com> parents: 1469 diff changeset	855 expected = 0
1a216cb4ee64 verify: add check for mismatch of index and data length Matt Mackall <mpm@selenic.com> parents: 1469 diff changeset	856 if self.count():
1a216cb4ee64 verify: add check for mismatch of index and data length Matt Mackall <mpm@selenic.com> parents: 1469 diff changeset	857 expected = self.end(self.count() - 1)
1667 daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	858
1494 249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	859 try:
249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	860 f = self.opener(self.datafile)
249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	861 f.seek(0, 2)
249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	862 actual = f.tell()
1667 daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	863 dd = actual - expected
1494 249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	864 except IOError, inst:
1667 daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	865 if inst.errno != errno.ENOENT:
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	866 raise
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	867 dd = 0
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	868
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	869 try:
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	870 f = self.opener(self.indexfile)
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	871 f.seek(0, 2)
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	872 actual = f.tell()
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	873 s = struct.calcsize(indexformat)
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	874 i = actual / s
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	875 di = actual - (i * s)
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	876 except IOError, inst:
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	877 if inst.errno != errno.ENOENT:
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	878 raise
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	879 di = 0
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	880
daff3ef0de8d verify: notice extra data in indices Matt Mackall <mpm@selenic.com> parents: 1660 diff changeset	881 return (dd, di)
1494 249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	882
249ca10d37f4 Handle empty logs in repo.checksize Matt Mackall <mpm@selenic.com> parents: 1493 diff changeset	883

Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/revlog.py @ 1941:7518823709a2