Mercurial > hg
annotate mercurial/revlog.py @ 2439:e8c4f3d3df8c
extend network protocol to stop clients from locking servers
now all repositories have capabilities slot, tuple with list of names.
if 'unbundle' capability present, repo supports push where client does
not need to lock server. repository classes that have unbundle capability
also have unbundle method.
implemented for ssh now, will be base for push over http.
unbundle protocol acts this way. server tells client what heads it
has during normal negotiate step. client starts unbundle by repeat
server's heads back to it. if server has new heads, abort immediately.
otherwise, transfer changes to server. once data transferred, server
locks and checks heads again. if heads same, changes can be added.
else someone else added heads, and server aborts.
if client wants to force server to add heads, sends special heads list of
'force'.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Thu, 15 Jun 2006 16:37:23 -0700 |
parents | 16276b1c0658 |
children | 568e58eed096 |
rev | line source |
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1083 | 1 """ |
2 revlog.py - storage back-end for mercurial | |
3 | |
4 This provides efficient delta storage with O(1) retrieve and append | |
5 and O(changes) merge between branches | |
6 | |
7 Copyright 2005 Matt Mackall <mpm@selenic.com> | |
8 | |
9 This software may be used and distributed according to the terms | |
10 of the GNU General Public License, incorporated herein by reference. | |
11 """ | |
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12 |
1089 | 13 from node import * |
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14 from i18n import gettext as _ |
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15 from demandload import demandload |
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16 demandload(globals(), "binascii changegroup errno heapq mdiff os") |
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17 demandload(globals(), "sha struct util zlib") |
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18 |
2072 | 19 # revlog version strings |
20 REVLOGV0 = 0 | |
21 REVLOGNG = 1 | |
22 | |
2073 | 23 # revlog flags |
24 REVLOGNGINLINEDATA = (1 << 16) | |
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25 REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA |
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26 |
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27 REVLOG_DEFAULT_FORMAT = REVLOGNG |
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28 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
2073 | 29 |
30 def flagstr(flag): | |
31 if flag == "inline": | |
32 return REVLOGNGINLINEDATA | |
33 raise RevlogError(_("unknown revlog flag %s" % flag)) | |
34 | |
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35 def hash(text, p1, p2): |
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36 """generate a hash from the given text and its parent hashes |
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37 |
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38 This hash combines both the current file contents and its history |
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39 in a manner that makes it easy to distinguish nodes with the same |
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40 content in the revision graph. |
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41 """ |
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42 l = [p1, p2] |
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43 l.sort() |
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44 s = sha.new(l[0]) |
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45 s.update(l[1]) |
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46 s.update(text) |
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47 return s.digest() |
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48 |
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49 def compress(text): |
1083 | 50 """ generate a possibly-compressed representation of text """ |
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51 if not text: return ("", text) |
112 | 52 if len(text) < 44: |
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53 if text[0] == '\0': return ("", text) |
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54 return ('u', text) |
112 | 55 bin = zlib.compress(text) |
56 if len(bin) > len(text): | |
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57 if text[0] == '\0': return ("", text) |
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58 return ('u', text) |
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59 return ("", bin) |
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60 |
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61 def decompress(bin): |
1083 | 62 """ decompress the given input """ |
112 | 63 if not bin: return bin |
64 t = bin[0] | |
65 if t == '\0': return bin | |
66 if t == 'x': return zlib.decompress(bin) | |
67 if t == 'u': return bin[1:] | |
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68 raise RevlogError(_("unknown compression type %r") % t) |
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69 |
2072 | 70 indexformatv0 = ">4l20s20s20s" |
2079 | 71 v0shaoffset = 56 |
2072 | 72 # index ng: |
73 # 6 bytes offset | |
74 # 2 bytes flags | |
75 # 4 bytes compressed length | |
76 # 4 bytes uncompressed length | |
77 # 4 bytes: base rev | |
78 # 4 bytes link rev | |
79 # 4 bytes parent 1 rev | |
80 # 4 bytes parent 2 rev | |
81 # 32 bytes: nodeid | |
82 indexformatng = ">Qiiiiii20s12x" | |
2079 | 83 ngshaoffset = 32 |
2072 | 84 versionformat = ">i" |
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85 |
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86 class lazyparser(object): |
1083 | 87 """ |
88 this class avoids the need to parse the entirety of large indices | |
89 """ | |
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90 |
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91 # lazyparser is not safe to use on windows if win32 extensions not |
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92 # available. it keeps file handle open, which make it not possible |
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93 # to break hardlinks on local cloned repos. |
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94 safe_to_use = os.name != 'nt' or (not util.is_win_9x() and |
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95 hasattr(util, 'win32api')) |
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96 |
2079 | 97 def __init__(self, dataf, size, indexformat, shaoffset): |
98 self.dataf = dataf | |
99 self.format = indexformat | |
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100 self.s = struct.calcsize(indexformat) |
2072 | 101 self.indexformat = indexformat |
2079 | 102 self.datasize = size |
103 self.l = size/self.s | |
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104 self.index = [None] * self.l |
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105 self.map = {nullid: -1} |
2079 | 106 self.allmap = 0 |
323 | 107 self.all = 0 |
2079 | 108 self.mapfind_count = 0 |
109 self.shaoffset = shaoffset | |
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110 |
2079 | 111 def loadmap(self): |
112 """ | |
113 during a commit, we need to make sure the rev being added is | |
114 not a duplicate. This requires loading the entire index, | |
115 which is fairly slow. loadmap can load up just the node map, | |
116 which takes much less time. | |
117 """ | |
118 if self.allmap: return | |
119 start = 0 | |
120 end = self.datasize | |
121 self.allmap = 1 | |
122 cur = 0 | |
123 count = 0 | |
124 blocksize = self.s * 256 | |
125 self.dataf.seek(0) | |
126 while cur < end: | |
127 data = self.dataf.read(blocksize) | |
128 off = 0 | |
129 for x in xrange(256): | |
130 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
131 self.map[n] = count | |
132 count += 1 | |
133 if count >= self.l: | |
134 break | |
135 off += self.s | |
136 cur += blocksize | |
137 | |
138 def loadblock(self, blockstart, blocksize, data=None): | |
323 | 139 if self.all: return |
2079 | 140 if data is None: |
141 self.dataf.seek(blockstart) | |
142 data = self.dataf.read(blocksize) | |
143 lend = len(data) / self.s | |
144 i = blockstart / self.s | |
145 off = 0 | |
146 for x in xrange(lend): | |
147 if self.index[i + x] == None: | |
148 b = data[off : off + self.s] | |
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149 self.index[i + x] = b |
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150 n = b[self.shaoffset:self.shaoffset + 20] |
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151 self.map[n] = i + x |
2079 | 152 off += self.s |
153 | |
154 def findnode(self, node): | |
155 """search backwards through the index file for a specific node""" | |
156 if self.allmap: return None | |
157 | |
158 # hg log will cause many many searches for the manifest | |
159 # nodes. After we get called a few times, just load the whole | |
160 # thing. | |
161 if self.mapfind_count > 8: | |
162 self.loadmap() | |
163 if node in self.map: | |
164 return node | |
165 return None | |
166 self.mapfind_count += 1 | |
167 last = self.l - 1 | |
168 while self.index[last] != None: | |
169 if last == 0: | |
170 self.all = 1 | |
171 self.allmap = 1 | |
172 return None | |
173 last -= 1 | |
174 end = (last + 1) * self.s | |
175 blocksize = self.s * 256 | |
176 while end >= 0: | |
177 start = max(end - blocksize, 0) | |
178 self.dataf.seek(start) | |
179 data = self.dataf.read(end - start) | |
180 findend = end - start | |
181 while True: | |
182 # we're searching backwards, so weh have to make sure | |
183 # we don't find a changeset where this node is a parent | |
184 off = data.rfind(node, 0, findend) | |
185 findend = off | |
186 if off >= 0: | |
187 i = off / self.s | |
188 off = i * self.s | |
189 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
190 if n == node: | |
191 self.map[n] = i + start / self.s | |
192 return node | |
193 else: | |
194 break | |
195 end -= blocksize | |
196 return None | |
197 | |
198 def loadindex(self, i=None, end=None): | |
199 if self.all: return | |
200 all = False | |
201 if i == None: | |
202 blockstart = 0 | |
203 blocksize = (512 / self.s) * self.s | |
204 end = self.datasize | |
205 all = True | |
323 | 206 else: |
2079 | 207 if end: |
208 blockstart = i * self.s | |
209 end = end * self.s | |
210 blocksize = end - blockstart | |
211 else: | |
212 blockstart = (i & ~(32)) * self.s | |
213 blocksize = self.s * 64 | |
214 end = blockstart + blocksize | |
215 while blockstart < end: | |
216 self.loadblock(blockstart, blocksize) | |
217 blockstart += blocksize | |
218 if all: self.all = True | |
515 | 219 |
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220 class lazyindex(object): |
1083 | 221 """a lazy version of the index array""" |
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222 def __init__(self, parser): |
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223 self.p = parser |
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224 def __len__(self): |
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225 return len(self.p.index) |
115 | 226 def load(self, pos): |
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227 if pos < 0: |
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228 pos += len(self.p.index) |
2079 | 229 self.p.loadindex(pos) |
115 | 230 return self.p.index[pos] |
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231 def __getitem__(self, pos): |
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232 ret = self.p.index[pos] or self.load(pos) |
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233 if isinstance(ret, str): |
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234 ret = struct.unpack(self.p.indexformat, ret) |
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235 return ret |
2072 | 236 def __setitem__(self, pos, item): |
237 self.p.index[pos] = item | |
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238 def __delitem__(self, pos): |
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239 del self.p.index[pos] |
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240 def append(self, e): |
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241 self.p.index.append(e) |
515 | 242 |
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243 class lazymap(object): |
1083 | 244 """a lazy version of the node map""" |
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245 def __init__(self, parser): |
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246 self.p = parser |
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247 def load(self, key): |
2079 | 248 n = self.p.findnode(key) |
249 if n == None: | |
1214 | 250 raise KeyError(key) |
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251 def __contains__(self, key): |
2079 | 252 if key in self.p.map: |
253 return True | |
254 self.p.loadmap() | |
323 | 255 return key in self.p.map |
97 | 256 def __iter__(self): |
469 | 257 yield nullid |
97 | 258 for i in xrange(self.p.l): |
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259 ret = self.p.index[i] |
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260 if not ret: |
2079 | 261 self.p.loadindex(i) |
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262 ret = self.p.index[i] |
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263 if isinstance(ret, str): |
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264 ret = struct.unpack(self.p.indexformat, ret) |
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265 yield ret[-1] |
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266 def __getitem__(self, key): |
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267 try: |
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268 return self.p.map[key] |
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269 except KeyError: |
86
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270 try: |
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271 self.load(key) |
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272 return self.p.map[key] |
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273 except KeyError: |
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274 raise KeyError("node " + hex(key)) |
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275 def __setitem__(self, key, val): |
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276 self.p.map[key] = val |
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277 def __delitem__(self, key): |
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278 del self.p.map[key] |
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279 |
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280 class RevlogError(Exception): pass |
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281 |
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282 class revlog(object): |
1083 | 283 """ |
284 the underlying revision storage object | |
285 | |
286 A revlog consists of two parts, an index and the revision data. | |
287 | |
288 The index is a file with a fixed record size containing | |
289 information on each revision, includings its nodeid (hash), the | |
290 nodeids of its parents, the position and offset of its data within | |
291 the data file, and the revision it's based on. Finally, each entry | |
292 contains a linkrev entry that can serve as a pointer to external | |
293 data. | |
294 | |
295 The revision data itself is a linear collection of data chunks. | |
296 Each chunk represents a revision and is usually represented as a | |
297 delta against the previous chunk. To bound lookup time, runs of | |
298 deltas are limited to about 2 times the length of the original | |
299 version data. This makes retrieval of a version proportional to | |
300 its size, or O(1) relative to the number of revisions. | |
301 | |
302 Both pieces of the revlog are written to in an append-only | |
303 fashion, which means we never need to rewrite a file to insert or | |
304 remove data, and can use some simple techniques to avoid the need | |
305 for locking while reading. | |
306 """ | |
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307 def __init__(self, opener, indexfile, datafile, |
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308 defversion=REVLOG_DEFAULT_VERSION): |
1083 | 309 """ |
310 create a revlog object | |
311 | |
312 opener is a function that abstracts the file opening operation | |
313 and can be used to implement COW semantics or the like. | |
314 """ | |
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315 self.indexfile = indexfile |
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316 self.datafile = datafile |
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317 self.opener = opener |
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318 |
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319 self.indexstat = None |
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320 self.cache = None |
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321 self.chunkcache = None |
2072 | 322 self.defversion = defversion |
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323 self.load() |
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324 |
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325 def load(self): |
2072 | 326 v = self.defversion |
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327 try: |
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328 f = self.opener(self.indexfile) |
2079 | 329 i = f.read(4) |
330 f.seek(0) | |
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331 except IOError, inst: |
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332 if inst.errno != errno.ENOENT: |
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333 raise |
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334 i = "" |
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335 else: |
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336 try: |
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337 st = util.fstat(f) |
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338 except AttributeError, inst: |
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339 st = None |
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340 else: |
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341 oldst = self.indexstat |
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342 if (oldst and st.st_dev == oldst.st_dev |
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343 and st.st_ino == oldst.st_ino |
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344 and st.st_mtime == oldst.st_mtime |
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345 and st.st_ctime == oldst.st_ctime): |
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346 return |
2072 | 347 self.indexstat = st |
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348 if len(i) > 0: |
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349 v = struct.unpack(versionformat, i)[0] |
2073 | 350 flags = v & ~0xFFFF |
351 fmt = v & 0xFFFF | |
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352 if fmt == REVLOGV0: |
2073 | 353 if flags: |
354 raise RevlogError(_("index %s invalid flags %x for format v0" % | |
355 (self.indexfile, flags))) | |
356 elif fmt == REVLOGNG: | |
357 if flags & ~REVLOGNGINLINEDATA: | |
358 raise RevlogError(_("index %s invalid flags %x for revlogng" % | |
359 (self.indexfile, flags))) | |
360 else: | |
361 raise RevlogError(_("index %s invalid format %d" % | |
362 (self.indexfile, fmt))) | |
2072 | 363 self.version = v |
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364 if v == REVLOGV0: |
2072 | 365 self.indexformat = indexformatv0 |
2079 | 366 shaoffset = v0shaoffset |
2072 | 367 else: |
368 self.indexformat = indexformatng | |
2079 | 369 shaoffset = ngshaoffset |
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370 |
2072 | 371 if i: |
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372 if (lazyparser.safe_to_use and not self.inlinedata() and |
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373 st and st.st_size > 10000): |
2072 | 374 # big index, let's parse it on demand |
2079 | 375 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset) |
2072 | 376 self.index = lazyindex(parser) |
377 self.nodemap = lazymap(parser) | |
378 else: | |
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379 self.parseindex(f, st) |
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380 if self.version != REVLOGV0: |
2072 | 381 e = list(self.index[0]) |
382 type = self.ngtype(e[0]) | |
383 e[0] = self.offset_type(0, type) | |
384 self.index[0] = e | |
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385 else: |
2072 | 386 self.nodemap = { nullid: -1} |
387 self.index = [] | |
388 | |
389 | |
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390 def parseindex(self, fp, st): |
2072 | 391 s = struct.calcsize(self.indexformat) |
392 self.index = [] | |
393 self.nodemap = {nullid: -1} | |
2073 | 394 inline = self.inlinedata() |
2072 | 395 n = 0 |
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396 leftover = None |
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397 while True: |
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398 if st: |
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399 data = fp.read(65536) |
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400 else: |
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401 # hack for httprangereader, it doesn't do partial reads well |
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402 data = fp.read() |
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403 if not data: |
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404 break |
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405 if n == 0 and self.inlinedata(): |
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406 # cache the first chunk |
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407 self.chunkcache = (0, data) |
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408 if leftover: |
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409 data = leftover + data |
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410 leftover = None |
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411 off = 0 |
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412 l = len(data) |
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413 while off < l: |
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414 if l - off < s: |
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415 leftover = data[off:] |
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416 break |
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417 cur = data[off:off + s] |
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418 off += s |
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419 e = struct.unpack(self.indexformat, cur) |
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420 self.index.append(e) |
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421 self.nodemap[e[-1]] = n |
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422 n += 1 |
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423 if inline: |
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424 off += e[1] |
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425 if off > l: |
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426 # some things don't seek well, just read it |
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427 fp.read(off - l) |
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428 if not st: |
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429 break |
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430 |
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431 |
2072 | 432 def ngoffset(self, q): |
433 if q & 0xFFFF: | |
434 raise RevlogError(_('%s: incompatible revision flag %x') % | |
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435 (self.indexfile, q)) |
2072 | 436 return long(q >> 16) |
437 | |
438 def ngtype(self, q): | |
439 return int(q & 0xFFFF) | |
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440 |
2072 | 441 def offset_type(self, offset, type): |
442 return long(long(offset) << 16 | type) | |
443 | |
2079 | 444 def loadindex(self, start, end): |
445 """load a block of indexes all at once from the lazy parser""" | |
446 if isinstance(self.index, lazyindex): | |
447 self.index.p.loadindex(start, end) | |
448 | |
2072 | 449 def loadindexmap(self): |
450 """loads both the map and the index from the lazy parser""" | |
451 if isinstance(self.index, lazyindex): | |
452 p = self.index.p | |
2079 | 453 p.loadindex() |
454 self.nodemap = p.map | |
455 | |
456 def loadmap(self): | |
457 """loads the map from the lazy parser""" | |
458 if isinstance(self.nodemap, lazymap): | |
459 self.nodemap.p.loadmap() | |
460 self.nodemap = self.nodemap.p.map | |
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461 |
2073 | 462 def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
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463 def tip(self): return self.node(len(self.index) - 1) |
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464 def count(self): return len(self.index) |
2072 | 465 def node(self, rev): |
466 return (rev < 0) and nullid or self.index[rev][-1] | |
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467 def rev(self, node): |
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468 try: |
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469 return self.nodemap[node] |
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470 except KeyError: |
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471 raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) |
2072 | 472 def linkrev(self, node): return self.index[self.rev(node)][-4] |
2 | 473 def parents(self, node): |
474 if node == nullid: return (nullid, nullid) | |
2072 | 475 r = self.rev(node) |
476 d = self.index[r][-3:-1] | |
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477 if self.version == REVLOGV0: |
2072 | 478 return d |
479 return [ self.node(x) for x in d ] | |
480 def start(self, rev): | |
481 if rev < 0: | |
482 return -1 | |
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483 if self.version != REVLOGV0: |
2072 | 484 return self.ngoffset(self.index[rev][0]) |
485 return self.index[rev][0] | |
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486 |
2072 | 487 def end(self, rev): return self.start(rev) + self.length(rev) |
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488 |
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489 def size(self, rev): |
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490 """return the length of the uncompressed text for a given revision""" |
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491 l = -1 |
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492 if self.version != REVLOGV0: |
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493 l = self.index[rev][2] |
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494 if l >= 0: |
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495 return l |
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496 |
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497 t = self.revision(self.node(rev)) |
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498 return len(t) |
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499 |
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500 # alternate implementation, The advantage to this code is it |
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501 # will be faster for a single revision. But, the results are not |
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502 # cached, so finding the size of every revision will be slower. |
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503 """ |
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504 if self.cache and self.cache[1] == rev: |
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505 return len(self.cache[2]) |
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506 |
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507 base = self.base(rev) |
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508 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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509 base = self.cache[1] |
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510 text = self.cache[2] |
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511 else: |
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512 text = self.revision(self.node(base)) |
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513 |
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514 l = len(text) |
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515 for x in xrange(base + 1, rev + 1): |
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516 l = mdiff.patchedsize(l, self.chunk(x)) |
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517 return l |
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518 """ |
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519 |
1941
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520 def length(self, rev): |
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521 if rev < 0: |
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522 return 0 |
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523 else: |
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524 return self.index[rev][1] |
2072 | 525 def base(self, rev): return (rev < 0) and rev or self.index[rev][-5] |
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526 |
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527 def reachable(self, rev, stop=None): |
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528 reachable = {} |
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529 visit = [rev] |
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530 reachable[rev] = 1 |
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531 if stop: |
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532 stopn = self.rev(stop) |
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533 else: |
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534 stopn = 0 |
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535 while visit: |
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536 n = visit.pop(0) |
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537 if n == stop: |
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538 continue |
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539 if n == nullid: |
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540 continue |
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541 for p in self.parents(n): |
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542 if self.rev(p) < stopn: |
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543 continue |
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544 if p not in reachable: |
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545 reachable[p] = 1 |
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546 visit.append(p) |
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547 return reachable |
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548 |
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549 def nodesbetween(self, roots=None, heads=None): |
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550 """Return a tuple containing three elements. Elements 1 and 2 contain |
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551 a final list bases and heads after all the unreachable ones have been |
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552 pruned. Element 0 contains a topologically sorted list of all |
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553 |
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|
554 nodes that satisfy these constraints: |
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555 1. All nodes must be descended from a node in roots (the nodes on |
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556 roots are considered descended from themselves). |
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557 2. All nodes must also be ancestors of a node in heads (the nodes in |
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558 heads are considered to be their own ancestors). |
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559 |
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560 If roots is unspecified, nullid is assumed as the only root. |
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561 If heads is unspecified, it is taken to be the output of the |
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562 heads method (i.e. a list of all nodes in the repository that |
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563 have no children).""" |
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564 nonodes = ([], [], []) |
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565 if roots is not None: |
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566 roots = list(roots) |
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567 if not roots: |
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568 return nonodes |
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569 lowestrev = min([self.rev(n) for n in roots]) |
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570 else: |
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571 roots = [nullid] # Everybody's a descendent of nullid |
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572 lowestrev = -1 |
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573 if (lowestrev == -1) and (heads is None): |
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574 # We want _all_ the nodes! |
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575 return ([self.node(r) for r in xrange(0, self.count())], |
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|
576 [nullid], list(self.heads())) |
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577 if heads is None: |
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578 # All nodes are ancestors, so the latest ancestor is the last |
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579 # node. |
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580 highestrev = self.count() - 1 |
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581 # Set ancestors to None to signal that every node is an ancestor. |
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582 ancestors = None |
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583 # Set heads to an empty dictionary for later discovery of heads |
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584 heads = {} |
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585 else: |
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|
586 heads = list(heads) |
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587 if not heads: |
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588 return nonodes |
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589 ancestors = {} |
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590 # Start at the top and keep marking parents until we're done. |
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591 nodestotag = heads[:] |
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592 # Turn heads into a dictionary so we can remove 'fake' heads. |
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593 # Also, later we will be using it to filter out the heads we can't |
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594 # find from roots. |
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|
595 heads = dict.fromkeys(heads, 0) |
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596 # Remember where the top was so we can use it as a limit later. |
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diff
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|
597 highestrev = max([self.rev(n) for n in nodestotag]) |
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diff
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|
598 while nodestotag: |
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diff
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|
599 # grab a node to tag |
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diff
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|
600 n = nodestotag.pop() |
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diff
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|
601 # Never tag nullid |
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diff
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|
602 if n == nullid: |
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|
603 continue |
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|
604 # A node's revision number represents its place in a |
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605 # topologically sorted list of nodes. |
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606 r = self.rev(n) |
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607 if r >= lowestrev: |
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608 if n not in ancestors: |
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609 # If we are possibly a descendent of one of the roots |
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610 # and we haven't already been marked as an ancestor |
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611 ancestors[n] = 1 # Mark as ancestor |
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612 # Add non-nullid parents to list of nodes to tag. |
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613 nodestotag.extend([p for p in self.parents(n) if |
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614 p != nullid]) |
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615 elif n in heads: # We've seen it before, is it a fake head? |
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616 # So it is, real heads should not be the ancestors of |
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617 # any other heads. |
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618 heads.pop(n) |
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Fix small bug in nodesbetween if heads is [nullid].
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619 if not ancestors: |
1463
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Fix to handle case of empty list for roots or heads in nodesbetween.
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620 return nonodes |
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621 # Now that we have our set of ancestors, we want to remove any |
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622 # roots that are not ancestors. |
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623 |
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624 # If one of the roots was nullid, everything is included anyway. |
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625 if lowestrev > -1: |
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626 # But, since we weren't, let's recompute the lowest rev to not |
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627 # include roots that aren't ancestors. |
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628 |
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629 # Filter out roots that aren't ancestors of heads |
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630 roots = [n for n in roots if n in ancestors] |
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631 # Recompute the lowest revision |
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632 if roots: |
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633 lowestrev = min([self.rev(n) for n in roots]) |
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634 else: |
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635 # No more roots? Return empty list |
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636 return nonodes |
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637 else: |
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638 # We are descending from nullid, and don't need to care about |
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639 # any other roots. |
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640 lowestrev = -1 |
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641 roots = [nullid] |
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642 # Transform our roots list into a 'set' (i.e. a dictionary where the |
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643 # values don't matter. |
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644 descendents = dict.fromkeys(roots, 1) |
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645 # Also, keep the original roots so we can filter out roots that aren't |
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646 # 'real' roots (i.e. are descended from other roots). |
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647 roots = descendents.copy() |
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648 # Our topologically sorted list of output nodes. |
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649 orderedout = [] |
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650 # Don't start at nullid since we don't want nullid in our output list, |
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651 # and if nullid shows up in descedents, empty parents will look like |
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652 # they're descendents. |
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653 for r in xrange(max(lowestrev, 0), highestrev + 1): |
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654 n = self.node(r) |
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655 isdescendent = False |
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656 if lowestrev == -1: # Everybody is a descendent of nullid |
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657 isdescendent = True |
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658 elif n in descendents: |
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659 # n is already a descendent |
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660 isdescendent = True |
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661 # This check only needs to be done here because all the roots |
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662 # will start being marked is descendents before the loop. |
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663 if n in roots: |
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664 # If n was a root, check if it's a 'real' root. |
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665 p = tuple(self.parents(n)) |
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666 # If any of its parents are descendents, it's not a root. |
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667 if (p[0] in descendents) or (p[1] in descendents): |
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668 roots.pop(n) |
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669 else: |
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670 p = tuple(self.parents(n)) |
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671 # A node is a descendent if either of its parents are |
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672 # descendents. (We seeded the dependents list with the roots |
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673 # up there, remember?) |
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674 if (p[0] in descendents) or (p[1] in descendents): |
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675 descendents[n] = 1 |
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676 isdescendent = True |
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677 if isdescendent and ((ancestors is None) or (n in ancestors)): |
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678 # Only include nodes that are both descendents and ancestors. |
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679 orderedout.append(n) |
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680 if (ancestors is not None) and (n in heads): |
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681 # We're trying to figure out which heads are reachable |
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682 # from roots. |
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683 # Mark this head as having been reached |
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684 heads[n] = 1 |
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685 elif ancestors is None: |
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686 # Otherwise, we're trying to discover the heads. |
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687 # Assume this is a head because if it isn't, the next step |
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688 # will eventually remove it. |
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689 heads[n] = 1 |
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690 # But, obviously its parents aren't. |
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691 for p in self.parents(n): |
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692 heads.pop(p, None) |
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693 heads = [n for n in heads.iterkeys() if heads[n] != 0] |
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694 roots = roots.keys() |
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695 assert orderedout |
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696 assert roots |
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697 assert heads |
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698 return (orderedout, roots, heads) |
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699 |
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700 def heads(self, start=None): |
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701 """return the list of all nodes that have no children |
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702 |
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703 if start is specified, only heads that are descendants of |
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704 start will be returned |
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705 |
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706 """ |
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707 if start is None: |
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708 start = nullid |
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709 reachable = {start: 1} |
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710 heads = {start: 1} |
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711 startrev = self.rev(start) |
1083 | 712 |
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713 for r in xrange(startrev + 1, self.count()): |
221 | 714 n = self.node(r) |
715 for pn in self.parents(n): | |
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716 if pn in reachable: |
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717 reachable[n] = 1 |
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718 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
|
719 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
|
720 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
|
721 return heads.keys() |
370 | 722 |
723 def children(self, node): | |
1083 | 724 """find the children of a given node""" |
370 | 725 c = [] |
726 p = self.rev(node) | |
727 for r in range(p + 1, self.count()): | |
728 n = self.node(r) | |
729 for pn in self.parents(n): | |
854
473c030d34a6
Fixed revlog.children.
Tristan Wibberley <tristan@wibberley.org>
parents:
655
diff
changeset
|
730 if pn == node: |
473c030d34a6
Fixed revlog.children.
Tristan Wibberley <tristan@wibberley.org>
parents:
655
diff
changeset
|
731 c.append(n) |
370 | 732 continue |
733 elif pn == nullid: | |
734 continue | |
735 return c | |
515 | 736 |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
737 def lookup(self, id): |
1083 | 738 """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
|
739 try: |
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
740 rev = int(id) |
469 | 741 if str(rev) != id: raise ValueError |
742 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
|
743 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
|
744 return self.node(rev) |
469 | 745 except (ValueError, OverflowError): |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
746 c = [] |
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
747 for n in self.nodemap: |
469 | 748 if hex(n).startswith(id): |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
749 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
|
750 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
|
751 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
|
752 return c[0] |
515 | 753 |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
754 return None |
da28286bf6b7
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mpm@selenic.com
parents:
26
diff
changeset
|
755 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
756 def diff(self, a, b): |
1083 | 757 """return a delta between two revisions""" |
0
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Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
758 return mdiff.textdiff(a, b) |
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
759 |
73 | 760 def patches(self, t, pl): |
1083 | 761 """apply a list of patches to a string""" |
73 | 762 return mdiff.patches(t, pl) |
763 | |
2072 | 764 def chunk(self, rev, df=None, cachelen=4096): |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
765 start, length = self.start(rev), self.length(rev) |
2073 | 766 inline = self.inlinedata() |
767 if inline: | |
768 start += (rev + 1) * struct.calcsize(self.indexformat) | |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
769 end = start + length |
2072 | 770 def loadcache(df): |
771 cache_length = max(cachelen, length) # 4k | |
772 if not df: | |
2073 | 773 if inline: |
774 df = self.opener(self.indexfile) | |
775 else: | |
776 df = self.opener(self.datafile) | |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
777 df.seek(start) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
778 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
|
779 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
780 if not self.chunkcache: |
2072 | 781 loadcache(df) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
782 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
783 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
|
784 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
|
785 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
|
786 # it is cached |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
787 offset = start - cache_start |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
788 else: |
2072 | 789 loadcache(df) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
790 offset = 0 |
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
791 |
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
792 #def checkchunk(): |
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
793 # df = self.opener(self.datafile) |
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
794 # df.seek(start) |
14d1f1868bf6
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parents:
1559
diff
changeset
|
795 # return df.read(length) |
14d1f1868bf6
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
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diff
changeset
|
796 #assert s == checkchunk() |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
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diff
changeset
|
797 return decompress(self.chunkcache[1][offset:offset + length]) |
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parents:
1559
diff
changeset
|
798 |
119
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mpm@selenic.com
parents:
117
diff
changeset
|
799 def delta(self, node): |
1083 | 800 """return or calculate a delta between a node and its predecessor""" |
119
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Add code to retrieve or construct a revlog delta
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diff
changeset
|
801 r = self.rev(node) |
1941
7518823709a2
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parents:
1853
diff
changeset
|
802 return self.revdiff(r - 1, r) |
7518823709a2
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
803 |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
804 def revdiff(self, rev1, rev2): |
7518823709a2
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parents:
1853
diff
changeset
|
805 """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
|
806 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
|
807 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
|
808 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
|
809 return self.chunk(rev2) |
119
c7a66f9752a4
Add code to retrieve or construct a revlog delta
mpm@selenic.com
parents:
117
diff
changeset
|
810 else: |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
811 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
|
812 self.revision(self.node(rev2))) |
119
c7a66f9752a4
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parents:
117
diff
changeset
|
813 |
0
9117c6561b0b
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parents:
diff
changeset
|
814 def revision(self, node): |
1083 | 815 """return an uncompressed revision of a given""" |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
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parents:
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diff
changeset
|
816 if node == nullid: return "" |
0
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changeset
|
817 if self.cache and self.cache[0] == node: return self.cache[2] |
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|
818 |
1083 | 819 # look up what we need to read |
0
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parents:
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changeset
|
820 text = None |
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mpm@selenic.com
parents:
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|
821 rev = self.rev(node) |
1598
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cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
822 base = self.base(rev) |
0
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Add back links from file revisions to changeset revisions
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|
823 |
2073 | 824 if self.inlinedata(): |
825 # we probably have the whole chunk cached | |
826 df = None | |
827 else: | |
828 df = self.opener(self.datafile) | |
2072 | 829 |
1083 | 830 # do we have useful data cached? |
0
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|
831 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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parents:
diff
changeset
|
832 base = self.cache[1] |
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|
833 text = self.cache[2] |
2079 | 834 self.loadindex(base, rev + 1) |
1598
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cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
835 else: |
2079 | 836 self.loadindex(base, rev + 1) |
2072 | 837 text = self.chunk(base, df=df) |
0
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diff
changeset
|
838 |
71
47c9a869adee
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mpm@selenic.com
parents:
67
diff
changeset
|
839 bins = [] |
64 | 840 for r in xrange(base + 1, rev + 1): |
2072 | 841 bins.append(self.chunk(r, df=df)) |
0
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|
842 |
1941
7518823709a2
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
843 text = self.patches(text, bins) |
71
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Add mdiff.patches to speed up applying thousands of patches to the manifest
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67
diff
changeset
|
844 |
1598
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cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
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|
845 p1, p2 = self.parents(node) |
26 | 846 if node != hash(text, p1, p2): |
1402
9d2c2e6b32b5
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1400
diff
changeset
|
847 raise RevlogError(_("integrity check failed on %s:%d") |
98 | 848 % (self.datafile, rev)) |
0
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|
849 |
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|
850 self.cache = (node, rev, text) |
515 | 851 return text |
0
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|
852 |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
853 def checkinlinesize(self, tr, fp=None): |
2073 | 854 if not self.inlinedata(): |
855 return | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
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diff
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856 if not fp: |
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Make the appendfile class inline-data index friendly
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parents:
2073
diff
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|
857 fp = self.opener(self.indexfile, 'r') |
2082
856f0ba200bc
Additional appendfile fixes for interleaved data/index files
mason@suse.com
parents:
2081
diff
changeset
|
858 fp.seek(0, 2) |
2073 | 859 size = fp.tell() |
860 if size < 131072: | |
861 return | |
2084 | 862 trinfo = tr.find(self.indexfile) |
863 if trinfo == None: | |
864 raise RevlogError(_("%s not found in the transaction" % | |
865 self.indexfile)) | |
866 | |
867 trindex = trinfo[2] | |
868 dataoff = self.start(trindex) | |
869 | |
870 tr.add(self.datafile, dataoff) | |
2073 | 871 df = self.opener(self.datafile, 'w') |
872 calc = struct.calcsize(self.indexformat) | |
873 for r in xrange(self.count()): | |
874 start = self.start(r) + (r + 1) * calc | |
875 length = self.length(r) | |
876 fp.seek(start) | |
877 d = fp.read(length) | |
878 df.write(d) | |
879 fp.close() | |
880 df.close() | |
2076
d007df6daf8e
Create an atomic opener that does not automatically rename on close
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2075
diff
changeset
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881 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
2073 | 882 self.version &= ~(REVLOGNGINLINEDATA) |
883 if self.count(): | |
884 x = self.index[0] | |
885 e = struct.pack(self.indexformat, *x)[4:] | |
886 l = struct.pack(versionformat, self.version) | |
887 fp.write(l) | |
888 fp.write(e) | |
889 | |
890 for i in xrange(1, self.count()): | |
891 x = self.index[i] | |
892 e = struct.pack(self.indexformat, *x) | |
893 fp.write(e) | |
894 | |
2076
d007df6daf8e
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parents:
2075
diff
changeset
|
895 # if we don't call rename, the temp file will never replace the |
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Create an atomic opener that does not automatically rename on close
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parents:
2075
diff
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|
896 # real index |
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parents:
2075
diff
changeset
|
897 fp.rename() |
2084 | 898 |
899 tr.replace(self.indexfile, trindex * calc) | |
2073 | 900 self.chunkcache = None |
901 | |
644 | 902 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
1083 | 903 """add a revision to the log |
904 | |
905 text - the revision data to add | |
906 transaction - the transaction object used for rollback | |
907 link - the linkrev data to add | |
908 p1, p2 - the parent nodeids of the revision | |
909 d - an optional precomputed delta | |
910 """ | |
0
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911 if text is None: text = "" |
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912 if p1 is None: p1 = self.tip() |
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913 if p2 is None: p2 = nullid |
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|
914 |
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915 node = hash(text, p1, p2) |
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|
916 |
301 | 917 if node in self.nodemap: |
918 return node | |
919 | |
0
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|
920 n = self.count() |
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921 t = n - 1 |
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|
922 |
9117c6561b0b
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diff
changeset
|
923 if n: |
64 | 924 base = self.base(t) |
925 start = self.start(base) | |
0
9117c6561b0b
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parents:
diff
changeset
|
926 end = self.end(t) |
644 | 927 if not d: |
928 prev = self.revision(self.tip()) | |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
929 d = self.diff(prev, str(text)) |
98 | 930 data = compress(d) |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
931 l = len(data[1]) + len(data[0]) |
3d11f81c9145
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mason@suse.com
parents:
1509
diff
changeset
|
932 dist = end - start + l |
0
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|
933 |
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parents:
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|
934 # full versions are inserted when the needed deltas |
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diff
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|
935 # become comparable to the uncompressed text |
64 | 936 if not n or dist > len(text) * 2: |
0
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parents:
diff
changeset
|
937 data = compress(text) |
1533
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mason@suse.com
parents:
1509
diff
changeset
|
938 l = len(data[1]) + len(data[0]) |
0
9117c6561b0b
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parents:
diff
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|
939 base = n |
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parents:
diff
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|
940 else: |
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parents:
diff
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|
941 base = self.base(t) |
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parents:
diff
changeset
|
942 |
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parents:
diff
changeset
|
943 offset = 0 |
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parents:
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|
944 if t >= 0: |
9117c6561b0b
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parents:
diff
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|
945 offset = self.end(t) |
9117c6561b0b
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parents:
diff
changeset
|
946 |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
947 if self.version == REVLOGV0: |
2072 | 948 e = (offset, l, base, link, p1, p2, node) |
949 else: | |
950 e = (self.offset_type(offset, 0), l, len(text), | |
951 base, link, self.rev(p1), self.rev(p2), node) | |
515 | 952 |
0
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|
953 self.index.append(e) |
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|
954 self.nodemap[node] = n |
2072 | 955 entry = struct.pack(self.indexformat, *e) |
0
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diff
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|
956 |
2073 | 957 if not self.inlinedata(): |
958 transaction.add(self.datafile, offset) | |
959 transaction.add(self.indexfile, n * len(entry)) | |
960 f = self.opener(self.datafile, "a") | |
961 if data[0]: | |
962 f.write(data[0]) | |
963 f.write(data[1]) | |
2089
cb99c711c59f
make appendfile simpler so it does not break with revlogng on windows.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2084
diff
changeset
|
964 f.close() |
2073 | 965 f = self.opener(self.indexfile, "a") |
966 else: | |
967 f = self.opener(self.indexfile, "a+") | |
2077
4d0700ae0991
Fix inlined revlogs to seek to eof after opening "a+"
mason@suse.com
parents:
2076
diff
changeset
|
968 f.seek(0, 2) |
2084 | 969 transaction.add(self.indexfile, f.tell(), self.count() - 1) |
2072 | 970 |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
971 if len(self.index) == 1 and self.version != REVLOGV0: |
2072 | 972 l = struct.pack(versionformat, self.version) |
973 f.write(l) | |
974 entry = entry[4:] | |
975 | |
976 f.write(entry) | |
0
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parents:
diff
changeset
|
977 |
2073 | 978 if self.inlinedata(): |
979 f.write(data[0]) | |
980 f.write(data[1]) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
981 self.checkinlinesize(transaction, f) |
2073 | 982 |
0
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parents:
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|
983 self.cache = (node, n, text) |
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|
984 return node |
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diff
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|
985 |
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parents:
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changeset
|
986 def ancestor(self, a, b): |
1083 | 987 """calculate the least common ancestor of nodes a and b""" |
2081
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
988 |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
989 # start with some short cuts for the linear cases |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
990 if a == b: |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
991 return a |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
992 ra = self.rev(a) |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
993 rb = self.rev(b) |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
994 if ra < rb: |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
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|
995 last = b |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
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|
996 first = a |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
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|
997 else: |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
998 last = a |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
999 first = b |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
1000 |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
1001 # reachable won't include stop in the list, so we have to use a parent |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
1002 reachable = self.reachable(last, stop=self.parents(first)[0]) |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
1003 if first in reachable: |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
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|
1004 return first |
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
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|
1005 |
147 | 1006 # calculate the distance of every node from root |
1007 dist = {nullid: 0} | |
1008 for i in xrange(self.count()): | |
1009 n = self.node(i) | |
1010 p1, p2 = self.parents(n) | |
1011 dist[n] = max(dist[p1], dist[p2]) + 1 | |
515 | 1012 |
147 | 1013 # traverse ancestors in order of decreasing distance from root |
1014 def ancestors(node): | |
1015 # we store negative distances because heap returns smallest member | |
1016 h = [(-dist[node], node)] | |
1017 seen = {} | |
1018 while h: | |
1019 d, n = heapq.heappop(h) | |
1020 if n not in seen: | |
1021 seen[n] = 1 | |
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1022 yield (-d, n) |
147 | 1023 for p in self.parents(n): |
1024 heapq.heappush(h, (-dist[p], p)) | |
45
f2b2d5daec30
Fix recursion depth trouble with ancestor algorithm
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41
diff
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|
1025 |
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1026 def generations(node): |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1027 sg, s = None, {} |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1028 for g,n in ancestors(node): |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1029 if g != sg: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1030 if sg: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
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|
1031 yield sg, s |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1032 sg, s = g, {n:1} |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1033 else: |
0e2be889ccd7
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Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1034 s[n] = 1 |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1035 yield sg, s |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1036 |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
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|
1037 x = generations(a) |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1038 y = generations(b) |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1039 gx = x.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
1040 gy = y.next() |
45
f2b2d5daec30
Fix recursion depth trouble with ancestor algorithm
mpm@selenic.com
parents:
41
diff
changeset
|
1041 |
147 | 1042 # increment each ancestor list until it is closer to root than |
1043 # the other, or they match | |
1044 while 1: | |
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1045 #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
|
1046 if gx[0] == gy[0]: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1047 # find the intersection |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1048 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
|
1049 if i: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1050 return i[0] |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1051 else: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1052 #print "next" |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1053 gy = y.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
1054 gx = x.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1055 elif gx[0] < gy[0]: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1056 #print "next y" |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1057 gy = y.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1058 else: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
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parents:
1325
diff
changeset
|
1059 #print "next x" |
0e2be889ccd7
Repair ancestor logic, fix up test cases
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parents:
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diff
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|
1060 gx = x.next() |
0
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mpm@selenic.com
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|
1061 |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1062 def group(self, nodelist, lookup, infocollect=None): |
1083 | 1063 """calculate a delta group |
46 | 1064 |
1083 | 1065 Given a list of changeset revs, return a set of deltas and |
1066 metadata corresponding to nodes. the first delta is | |
1067 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1068 have this parent as it has all history before these | |
1069 changesets. parent is parent[0] | |
1070 """ | |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1071 revs = [self.rev(n) for n in nodelist] |
46 | 1072 |
1073 # if we don't have any revisions touched by these changesets, bail | |
192 | 1074 if not revs: |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1075 yield changegroup.closechunk() |
192 | 1076 return |
46 | 1077 |
1078 # add the parent of the first rev | |
1079 p = self.parents(self.node(revs[0]))[0] | |
1080 revs.insert(0, self.rev(p)) | |
1081 | |
1082 # build deltas | |
71
47c9a869adee
Add mdiff.patches to speed up applying thousands of patches to the manifest
mpm@selenic.com
parents:
67
diff
changeset
|
1083 for d in xrange(0, len(revs) - 1): |
46 | 1084 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
|
1085 nb = self.node(b) |
192 | 1086 |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1087 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
|
1088 infocollect(nb) |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1089 |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
1090 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
|
1091 p = self.parents(nb) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1092 meta = nb + p[0] + p[1] + lookup(nb) |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1093 yield changegroup.genchunk("%s%s" % (meta, d)) |
46 | 1094 |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1095 yield changegroup.closechunk() |
192 | 1096 |
1062 | 1097 def addgroup(self, revs, linkmapper, transaction, unique=0): |
1083 | 1098 """ |
1099 add a delta group | |
46 | 1100 |
1083 | 1101 given a set of deltas, add them to the revision log. the |
1102 first delta is against its parent, which should be in our | |
1103 log, the rest are against the previous delta. | |
1104 """ | |
1105 | |
1106 #track the base of the current delta log | |
46 | 1107 r = self.count() |
1108 t = r - 1 | |
2002
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1981
diff
changeset
|
1109 node = None |
515 | 1110 |
655 | 1111 base = prev = -1 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1112 start = end = textlen = 0 |
46 | 1113 if r: |
1114 end = self.end(t) | |
1115 | |
2072 | 1116 ifh = self.opener(self.indexfile, "a+") |
2077
4d0700ae0991
Fix inlined revlogs to seek to eof after opening "a+"
mason@suse.com
parents:
2076
diff
changeset
|
1117 ifh.seek(0, 2) |
2084 | 1118 transaction.add(self.indexfile, ifh.tell(), self.count()) |
2073 | 1119 if self.inlinedata(): |
1120 dfh = None | |
1121 else: | |
1122 transaction.add(self.datafile, end) | |
1123 dfh = self.opener(self.datafile, "a") | |
46 | 1124 |
1125 # loop through our set of deltas | |
192 | 1126 chain = None |
1127 for chunk in revs: | |
1128 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
94 | 1129 link = linkmapper(cs) |
77 | 1130 if node in self.nodemap: |
224
ccbcc4d76f81
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mpm@selenic.com
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221
diff
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|
1131 # 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
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|
1132 # if unique: |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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diff
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|
1133 # 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>
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diff
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|
1134 chain = node |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
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|
1135 continue |
192 | 1136 delta = chunk[80:] |
1137 | |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
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|
1138 for p in (p1, p2): |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
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|
1139 if not p in self.nodemap: |
2295
9c15f85e61b1
fix a typo in an error message
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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2289
diff
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|
1140 raise RevlogError(_("unknown parent %s") % short(p)) |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
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|
1141 |
192 | 1142 if not chain: |
1143 # retrieve the parent revision of the delta chain | |
1144 chain = p1 | |
1145 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
|
1146 raise RevlogError(_("unknown base %s") % short(chain[:4])) |
46 | 1147 |
1148 # full versions are inserted when the needed deltas become | |
1149 # comparable to the uncompressed text or when the previous | |
1150 # version is not the one we have a delta against. We use | |
1151 # the size of the previous full rev as a proxy for the | |
1152 # current size. | |
1153 | |
1154 if chain == prev: | |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
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|
1155 tempd = compress(delta) |
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
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|
1156 cdelta = tempd[0] + tempd[1] |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
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|
1157 textlen = mdiff.patchedsize(textlen, delta) |
46 | 1158 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1159 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
46 | 1160 # flush our writes here so we can read it in revision |
2072 | 1161 if dfh: |
1162 dfh.flush() | |
46 | 1163 ifh.flush() |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1164 text = self.revision(chain) |
73 | 1165 text = self.patches(text, [delta]) |
46 | 1166 chk = self.addrevision(text, transaction, link, p1, p2) |
1167 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:
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|
1168 raise RevlogError(_("consistency error adding group")) |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1169 textlen = len(text) |
46 | 1170 else: |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
1171 if self.version == REVLOGV0: |
2072 | 1172 e = (end, len(cdelta), base, link, p1, p2, node) |
1173 else: | |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1174 e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
2072 | 1175 link, self.rev(p1), self.rev(p2), node) |
46 | 1176 self.index.append(e) |
1177 self.nodemap[node] = r | |
2073 | 1178 if self.inlinedata(): |
1179 ifh.write(struct.pack(self.indexformat, *e)) | |
1180 ifh.write(cdelta) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
1181 self.checkinlinesize(transaction, ifh) |
2073 | 1182 if not self.inlinedata(): |
1183 dfh = self.opener(self.datafile, "a") | |
1184 ifh = self.opener(self.indexfile, "a") | |
1185 else: | |
1186 if not dfh: | |
1187 # addrevision switched from inline to conventional | |
1188 # reopen the index | |
1189 dfh = self.opener(self.datafile, "a") | |
1190 ifh = self.opener(self.indexfile, "a") | |
1191 dfh.write(cdelta) | |
1192 ifh.write(struct.pack(self.indexformat, *e)) | |
46 | 1193 |
65
d40cc5aacc31
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mpm@selenic.com
parents:
64
diff
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|
1194 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
|
1195 base = self.base(t) |
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1711
diff
changeset
|
1196 start = self.start(base) |
46 | 1197 end = self.end(t) |
1198 | |
1199 return node | |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1200 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1201 def strip(self, rev, minlink): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1202 if self.count() == 0 or rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1203 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1204 |
2072 | 1205 if isinstance(self.index, lazyindex): |
1206 self.loadindexmap() | |
1207 | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1208 # 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
|
1209 # does not actually belong to an older changeset. |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1210 # The minlink parameter defines the oldest revision |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1211 # we're allowed to strip away. |
2072 | 1212 while minlink > self.index[rev][-4]: |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1213 rev += 1 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
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|
1214 if rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
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|
1215 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
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diff
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|
1216 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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diff
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|
1217 # first truncate the files on disk |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1218 end = self.start(rev) |
2073 | 1219 if not self.inlinedata(): |
1220 df = self.opener(self.datafile, "a") | |
1221 df.truncate(end) | |
1222 end = rev * struct.calcsize(self.indexformat) | |
1223 else: | |
1224 end += rev * struct.calcsize(self.indexformat) | |
2072 | 1225 |
1226 indexf = self.opener(self.indexfile, "a") | |
1227 indexf.truncate(end) | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
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parents:
1533
diff
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|
1228 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
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diff
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|
1229 # then reset internal state in memory to forget those revisions |
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Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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diff
changeset
|
1230 self.cache = None |
1711 | 1231 self.chunkcache = None |
2072 | 1232 for x in xrange(rev, self.count()): |
1233 del self.nodemap[self.node(x)] | |
1535
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Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
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|
1234 |
2072 | 1235 del self.index[rev:] |
1535
7ae0ce7a3dc4
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diff
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|
1236 |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1237 def checksize(self): |
1a216cb4ee64
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parents:
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diff
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|
1238 expected = 0 |
1a216cb4ee64
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parents:
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diff
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|
1239 if self.count(): |
1a216cb4ee64
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parents:
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diff
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|
1240 expected = self.end(self.count() - 1) |
1667
daff3ef0de8d
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parents:
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diff
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|
1241 |
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249ca10d37f4
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parents:
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diff
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|
1242 try: |
249ca10d37f4
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parents:
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diff
changeset
|
1243 f = self.opener(self.datafile) |
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Matt Mackall <mpm@selenic.com>
parents:
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diff
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|
1244 f.seek(0, 2) |
249ca10d37f4
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Matt Mackall <mpm@selenic.com>
parents:
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|
1245 actual = f.tell() |
1667
daff3ef0de8d
verify: notice extra data in indices
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|
1246 dd = actual - expected |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
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|
1247 except IOError, inst: |
1667
daff3ef0de8d
verify: notice extra data in indices
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diff
changeset
|
1248 if inst.errno != errno.ENOENT: |
daff3ef0de8d
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diff
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|
1249 raise |
daff3ef0de8d
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diff
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|
1250 dd = 0 |
daff3ef0de8d
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|
1251 |
daff3ef0de8d
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diff
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|
1252 try: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
1253 f = self.opener(self.indexfile) |
daff3ef0de8d
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parents:
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diff
changeset
|
1254 f.seek(0, 2) |
daff3ef0de8d
verify: notice extra data in indices
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parents:
1660
diff
changeset
|
1255 actual = f.tell() |
2072 | 1256 s = struct.calcsize(self.indexformat) |
1667
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1257 i = actual / s |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1258 di = actual - (i * s) |
2073 | 1259 if self.inlinedata(): |
1260 databytes = 0 | |
1261 for r in xrange(self.count()): | |
1262 databytes += self.length(r) | |
1263 dd = 0 | |
1264 di = actual - self.count() * s - databytes | |
1667
daff3ef0de8d
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parents:
1660
diff
changeset
|
1265 except IOError, inst: |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1266 if inst.errno != errno.ENOENT: |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1267 raise |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1268 di = 0 |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1269 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1270 return (dd, di) |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1271 |
249ca10d37f4
Handle empty logs in repo.checksize
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parents:
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diff
changeset
|
1272 |