Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/revlog.py @ 2252:ba7afc7dd901
Added tag 0.9 for changeset 35fb62a3a673d5322f6274a44ba6456e5e4b3b37
author | Matt Mackall <mpm@selenic.com> |
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date | Wed, 10 May 2006 16:55:55 -0500 |
parents | 45aef5ddcdbe |
children | 3f38e872f39a |
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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: | |
2079 | 379 i = f.read() |
2072 | 380 self.parseindex(i) |
2073 | 381 if self.inlinedata(): |
382 # we've already got the entire data file read in, save it | |
383 # in the chunk data | |
384 self.chunkcache = (0, i) | |
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385 if self.version != REVLOGV0: |
2072 | 386 e = list(self.index[0]) |
387 type = self.ngtype(e[0]) | |
388 e[0] = self.offset_type(0, type) | |
389 self.index[0] = e | |
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390 else: |
2072 | 391 self.nodemap = { nullid: -1} |
392 self.index = [] | |
393 | |
394 | |
395 def parseindex(self, data): | |
396 s = struct.calcsize(self.indexformat) | |
397 l = len(data) | |
398 self.index = [] | |
399 self.nodemap = {nullid: -1} | |
2073 | 400 inline = self.inlinedata() |
2072 | 401 off = 0 |
402 n = 0 | |
403 while off < l: | |
404 e = struct.unpack(self.indexformat, data[off:off + s]) | |
405 self.index.append(e) | |
406 self.nodemap[e[-1]] = n | |
407 n += 1 | |
408 off += s | |
2073 | 409 if inline: |
410 off += e[1] | |
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411 |
2072 | 412 def ngoffset(self, q): |
413 if q & 0xFFFF: | |
414 raise RevlogError(_('%s: incompatible revision flag %x') % | |
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415 (self.indexfile, q)) |
2072 | 416 return long(q >> 16) |
417 | |
418 def ngtype(self, q): | |
419 return int(q & 0xFFFF) | |
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420 |
2072 | 421 def offset_type(self, offset, type): |
422 return long(long(offset) << 16 | type) | |
423 | |
2079 | 424 def loadindex(self, start, end): |
425 """load a block of indexes all at once from the lazy parser""" | |
426 if isinstance(self.index, lazyindex): | |
427 self.index.p.loadindex(start, end) | |
428 | |
2072 | 429 def loadindexmap(self): |
430 """loads both the map and the index from the lazy parser""" | |
431 if isinstance(self.index, lazyindex): | |
432 p = self.index.p | |
2079 | 433 p.loadindex() |
434 self.nodemap = p.map | |
435 | |
436 def loadmap(self): | |
437 """loads the map from the lazy parser""" | |
438 if isinstance(self.nodemap, lazymap): | |
439 self.nodemap.p.loadmap() | |
440 self.nodemap = self.nodemap.p.map | |
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441 |
2073 | 442 def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
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443 def tip(self): return self.node(len(self.index) - 1) |
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444 def count(self): return len(self.index) |
2072 | 445 def node(self, rev): |
446 return (rev < 0) and nullid or self.index[rev][-1] | |
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447 def rev(self, node): |
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448 try: |
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449 return self.nodemap[node] |
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450 except KeyError: |
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451 raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) |
2072 | 452 def linkrev(self, node): return self.index[self.rev(node)][-4] |
2 | 453 def parents(self, node): |
454 if node == nullid: return (nullid, nullid) | |
2072 | 455 r = self.rev(node) |
456 d = self.index[r][-3:-1] | |
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457 if self.version == REVLOGV0: |
2072 | 458 return d |
459 return [ self.node(x) for x in d ] | |
460 def start(self, rev): | |
461 if rev < 0: | |
462 return -1 | |
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463 if self.version != REVLOGV0: |
2072 | 464 return self.ngoffset(self.index[rev][0]) |
465 return self.index[rev][0] | |
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466 |
2072 | 467 def end(self, rev): return self.start(rev) + self.length(rev) |
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468 |
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469 def size(self, rev): |
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470 """return the length of the uncompressed text for a given revision""" |
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471 l = -1 |
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472 if self.version != REVLOGV0: |
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473 l = self.index[rev][2] |
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474 if l >= 0: |
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475 return l |
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476 |
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477 t = self.revision(self.node(rev)) |
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478 return len(t) |
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479 |
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480 # alternate implementation, The advantage to this code is it |
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481 # will be faster for a single revision. But, the results are not |
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482 # cached, so finding the size of every revision will be slower. |
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483 """ |
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484 if self.cache and self.cache[1] == rev: |
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485 return len(self.cache[2]) |
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486 |
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487 base = self.base(rev) |
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488 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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489 base = self.cache[1] |
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490 text = self.cache[2] |
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491 else: |
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492 text = self.revision(self.node(base)) |
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493 |
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494 l = len(text) |
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495 for x in xrange(base + 1, rev + 1): |
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496 l = mdiff.patchedsize(l, self.chunk(x)) |
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497 return l |
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498 """ |
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499 |
1941
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500 def length(self, rev): |
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501 if rev < 0: |
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502 return 0 |
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503 else: |
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504 return self.index[rev][1] |
2072 | 505 def base(self, rev): return (rev < 0) and rev or self.index[rev][-5] |
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506 |
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507 def reachable(self, rev, stop=None): |
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508 reachable = {} |
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509 visit = [rev] |
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510 reachable[rev] = 1 |
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511 if stop: |
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512 stopn = self.rev(stop) |
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513 else: |
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514 stopn = 0 |
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515 while visit: |
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516 n = visit.pop(0) |
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517 if n == stop: |
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518 continue |
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519 if n == nullid: |
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520 continue |
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521 for p in self.parents(n): |
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522 if self.rev(p) < stopn: |
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523 continue |
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524 if p not in reachable: |
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525 reachable[p] = 1 |
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526 visit.append(p) |
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527 return reachable |
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528 |
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529 def nodesbetween(self, roots=None, heads=None): |
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530 """Return a tuple containing three elements. Elements 1 and 2 contain |
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531 a final list bases and heads after all the unreachable ones have been |
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532 pruned. Element 0 contains a topologically sorted list of all |
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533 |
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534 nodes that satisfy these constraints: |
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535 1. All nodes must be descended from a node in roots (the nodes on |
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536 roots are considered descended from themselves). |
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537 2. All nodes must also be ancestors of a node in heads (the nodes in |
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538 heads are considered to be their own ancestors). |
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539 |
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540 If roots is unspecified, nullid is assumed as the only root. |
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541 If heads is unspecified, it is taken to be the output of the |
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542 heads method (i.e. a list of all nodes in the repository that |
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543 have no children).""" |
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544 nonodes = ([], [], []) |
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545 if roots is not None: |
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546 roots = list(roots) |
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547 if not roots: |
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548 return nonodes |
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549 lowestrev = min([self.rev(n) for n in roots]) |
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550 else: |
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551 roots = [nullid] # Everybody's a descendent of nullid |
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552 lowestrev = -1 |
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553 if (lowestrev == -1) and (heads is None): |
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554 # We want _all_ the nodes! |
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555 return ([self.node(r) for r in xrange(0, self.count())], |
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556 [nullid], list(self.heads())) |
518da3c3b6ce
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557 if heads is None: |
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558 # All nodes are ancestors, so the latest ancestor is the last |
518da3c3b6ce
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559 # node. |
518da3c3b6ce
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parents:
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560 highestrev = self.count() - 1 |
518da3c3b6ce
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561 # Set ancestors to None to signal that every node is an ancestor. |
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562 ancestors = None |
518da3c3b6ce
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563 # Set heads to an empty dictionary for later discovery of heads |
518da3c3b6ce
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564 heads = {} |
518da3c3b6ce
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Eric Hopper <hopper@omnifarious.org>
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565 else: |
1463
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Fix to handle case of empty list for roots or heads in nodesbetween.
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566 heads = list(heads) |
26e73acc0cdf
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diff
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567 if not heads: |
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parents:
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568 return nonodes |
1457
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569 ancestors = {} |
518da3c3b6ce
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diff
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570 # Start at the top and keep marking parents until we're done. |
1463
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571 nodestotag = heads[:] |
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572 # Turn heads into a dictionary so we can remove 'fake' heads. |
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573 # Also, later we will be using it to filter out the heads we can't |
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574 # find from roots. |
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575 heads = dict.fromkeys(heads, 0) |
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576 # Remember where the top was so we can use it as a limit later. |
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577 highestrev = max([self.rev(n) for n in nodestotag]) |
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578 while nodestotag: |
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579 # grab a node to tag |
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580 n = nodestotag.pop() |
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581 # Never tag nullid |
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582 if n == nullid: |
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583 continue |
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584 # A node's revision number represents its place in a |
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585 # topologically sorted list of nodes. |
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586 r = self.rev(n) |
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587 if r >= lowestrev: |
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588 if n not in ancestors: |
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589 # If we are possibly a descendent of one of the roots |
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590 # and we haven't already been marked as an ancestor |
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591 ancestors[n] = 1 # Mark as ancestor |
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592 # Add non-nullid parents to list of nodes to tag. |
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diff
changeset
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593 nodestotag.extend([p for p in self.parents(n) if |
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594 p != nullid]) |
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595 elif n in heads: # We've seen it before, is it a fake head? |
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596 # So it is, real heads should not be the ancestors of |
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597 # any other heads. |
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598 heads.pop(n) |
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106fdec8e1fb
Fix small bug in nodesbetween if heads is [nullid].
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1458
diff
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|
599 if not ancestors: |
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diff
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600 return nonodes |
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diff
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601 # Now that we have our set of ancestors, we want to remove any |
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This implements the nodesbetween method, and it removes the newer method
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changeset
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602 # roots that are not ancestors. |
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|
603 |
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diff
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|
604 # If one of the roots was nullid, everything is included anyway. |
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diff
changeset
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605 if lowestrev > -1: |
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diff
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606 # But, since we weren't, let's recompute the lowest rev to not |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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607 # include roots that aren't ancestors. |
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|
608 |
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609 # Filter out roots that aren't ancestors of heads |
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610 roots = [n for n in roots if n in ancestors] |
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611 # Recompute the lowest revision |
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612 if roots: |
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613 lowestrev = min([self.rev(n) for n in roots]) |
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|
614 else: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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|
615 # No more roots? Return empty list |
1463
26e73acc0cdf
Fix to handle case of empty list for roots or heads in nodesbetween.
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|
616 return nonodes |
1457
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617 else: |
518da3c3b6ce
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Eric Hopper <hopper@omnifarious.org>
parents:
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|
618 # We are descending from nullid, and don't need to care about |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
619 # any other roots. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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|
620 lowestrev = -1 |
518da3c3b6ce
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parents:
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|
621 roots = [nullid] |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
622 # Transform our roots list into a 'set' (i.e. a dictionary where the |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
623 # values don't matter. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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|
624 descendents = dict.fromkeys(roots, 1) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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diff
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|
625 # Also, keep the original roots so we can filter out roots that aren't |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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|
626 # 'real' roots (i.e. are descended from other roots). |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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|
627 roots = descendents.copy() |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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|
628 # Our topologically sorted list of output nodes. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
629 orderedout = [] |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
630 # Don't start at nullid since we don't want nullid in our output list, |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
631 # and if nullid shows up in descedents, empty parents will look like |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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|
632 # they're descendents. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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|
633 for r in xrange(max(lowestrev, 0), highestrev + 1): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
634 n = self.node(r) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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|
635 isdescendent = False |
518da3c3b6ce
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636 if lowestrev == -1: # Everybody is a descendent of nullid |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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637 isdescendent = True |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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638 elif n in descendents: |
518da3c3b6ce
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639 # n is already a descendent |
518da3c3b6ce
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640 isdescendent = True |
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parents:
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|
641 # This check only needs to be done here because all the roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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642 # will start being marked is descendents before the loop. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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643 if n in roots: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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644 # If n was a root, check if it's a 'real' root. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
645 p = tuple(self.parents(n)) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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646 # If any of its parents are descendents, it's not a root. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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changeset
|
647 if (p[0] in descendents) or (p[1] in descendents): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
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changeset
|
648 roots.pop(n) |
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This implements the nodesbetween method, and it removes the newer method
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649 else: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
650 p = tuple(self.parents(n)) |
518da3c3b6ce
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651 # A node is a descendent if either of its parents are |
518da3c3b6ce
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652 # descendents. (We seeded the dependents list with the roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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653 # up there, remember?) |
518da3c3b6ce
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654 if (p[0] in descendents) or (p[1] in descendents): |
518da3c3b6ce
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|
655 descendents[n] = 1 |
518da3c3b6ce
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656 isdescendent = True |
518da3c3b6ce
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657 if isdescendent and ((ancestors is None) or (n in ancestors)): |
518da3c3b6ce
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658 # Only include nodes that are both descendents and ancestors. |
518da3c3b6ce
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|
659 orderedout.append(n) |
518da3c3b6ce
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|
660 if (ancestors is not None) and (n in heads): |
518da3c3b6ce
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|
661 # We're trying to figure out which heads are reachable |
518da3c3b6ce
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662 # from roots. |
518da3c3b6ce
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|
663 # Mark this head as having been reached |
518da3c3b6ce
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|
664 heads[n] = 1 |
518da3c3b6ce
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665 elif ancestors is None: |
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|
666 # Otherwise, we're trying to discover the heads. |
518da3c3b6ce
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667 # Assume this is a head because if it isn't, the next step |
518da3c3b6ce
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|
668 # will eventually remove it. |
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|
669 heads[n] = 1 |
518da3c3b6ce
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670 # But, obviously its parents aren't. |
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671 for p in self.parents(n): |
518da3c3b6ce
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672 heads.pop(p, None) |
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673 heads = [n for n in heads.iterkeys() if heads[n] != 0] |
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674 roots = roots.keys() |
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|
675 assert orderedout |
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676 assert roots |
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677 assert heads |
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|
678 return (orderedout, roots, heads) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
679 |
1551
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
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changeset
|
680 def heads(self, start=None): |
1550
ccb9b62de892
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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|
681 """return the list of all nodes that have no children |
1551
e793cbc8be00
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|
682 |
e793cbc8be00
Fixes to "hg heads -r FOO":
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|
683 if start is specified, only heads that are descendants of |
e793cbc8be00
Fixes to "hg heads -r FOO":
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|
684 start will be returned |
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|
685 |
e793cbc8be00
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parents:
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|
686 """ |
e793cbc8be00
Fixes to "hg heads -r FOO":
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parents:
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diff
changeset
|
687 if start is None: |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
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diff
changeset
|
688 start = nullid |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
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parents:
1535
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|
689 reachable = {start: 1} |
ccb9b62de892
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|
690 heads = {start: 1} |
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parents:
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|
691 startrev = self.rev(start) |
1083 | 692 |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
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changeset
|
693 for r in xrange(startrev + 1, self.count()): |
221 | 694 n = self.node(r) |
695 for pn in self.parents(n): | |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
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1535
diff
changeset
|
696 if pn in reachable: |
ccb9b62de892
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|
697 reachable[n] = 1 |
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|
698 heads[n] = 1 |
ccb9b62de892
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|
699 if pn in heads: |
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add a -r/--rev option to heads to show only heads descendant from rev
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|
700 del heads[pn] |
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|
701 return heads.keys() |
370 | 702 |
703 def children(self, node): | |
1083 | 704 """find the children of a given node""" |
370 | 705 c = [] |
706 p = self.rev(node) | |
707 for r in range(p + 1, self.count()): | |
708 n = self.node(r) | |
709 for pn in self.parents(n): | |
854
473c030d34a6
Fixed revlog.children.
Tristan Wibberley <tristan@wibberley.org>
parents:
655
diff
changeset
|
710 if pn == node: |
473c030d34a6
Fixed revlog.children.
Tristan Wibberley <tristan@wibberley.org>
parents:
655
diff
changeset
|
711 c.append(n) |
370 | 712 continue |
713 elif pn == nullid: | |
714 continue | |
715 return c | |
515 | 716 |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
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26
diff
changeset
|
717 def lookup(self, id): |
1083 | 718 """locate a node based on revision number or subset of hex nodeid""" |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
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26
diff
changeset
|
719 try: |
da28286bf6b7
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26
diff
changeset
|
720 rev = int(id) |
469 | 721 if str(rev) != id: raise ValueError |
722 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
|
723 if rev < 0 or rev >= self.count(): raise ValueError |
36
da28286bf6b7
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26
diff
changeset
|
724 return self.node(rev) |
469 | 725 except (ValueError, OverflowError): |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
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parents:
26
diff
changeset
|
726 c = [] |
da28286bf6b7
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parents:
26
diff
changeset
|
727 for n in self.nodemap: |
469 | 728 if hex(n).startswith(id): |
36
da28286bf6b7
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diff
changeset
|
729 c.append(n) |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
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parents:
1400
diff
changeset
|
730 if len(c) > 1: raise RevlogError(_("Ambiguous identifier")) |
9d2c2e6b32b5
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diff
changeset
|
731 if len(c) < 1: raise RevlogError(_("No match found")) |
36
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26
diff
changeset
|
732 return c[0] |
515 | 733 |
36
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26
diff
changeset
|
734 return None |
da28286bf6b7
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26
diff
changeset
|
735 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
736 def diff(self, a, b): |
1083 | 737 """return a delta between two revisions""" |
0
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
738 return mdiff.textdiff(a, b) |
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
739 |
73 | 740 def patches(self, t, pl): |
1083 | 741 """apply a list of patches to a string""" |
73 | 742 return mdiff.patches(t, pl) |
743 | |
2072 | 744 def chunk(self, rev, df=None, cachelen=4096): |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
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parents:
1559
diff
changeset
|
745 start, length = self.start(rev), self.length(rev) |
2073 | 746 inline = self.inlinedata() |
747 if inline: | |
748 start += (rev + 1) * struct.calcsize(self.indexformat) | |
1598
14d1f1868bf6
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|
749 end = start + length |
2072 | 750 def loadcache(df): |
751 cache_length = max(cachelen, length) # 4k | |
752 if not df: | |
2073 | 753 if inline: |
754 df = self.opener(self.indexfile) | |
755 else: | |
756 df = self.opener(self.datafile) | |
1598
14d1f1868bf6
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parents:
1559
diff
changeset
|
757 df.seek(start) |
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758 self.chunkcache = (start, df.read(cache_length)) |
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759 |
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760 if not self.chunkcache: |
2072 | 761 loadcache(df) |
1598
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762 |
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763 cache_start = self.chunkcache[0] |
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764 cache_end = cache_start + len(self.chunkcache[1]) |
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765 if start >= cache_start and end <= cache_end: |
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766 # it is cached |
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767 offset = start - cache_start |
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768 else: |
2072 | 769 loadcache(df) |
1598
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770 offset = 0 |
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771 |
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772 #def checkchunk(): |
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773 # df = self.opener(self.datafile) |
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774 # df.seek(start) |
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775 # return df.read(length) |
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776 #assert s == checkchunk() |
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777 return decompress(self.chunkcache[1][offset:offset + length]) |
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778 |
119
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779 def delta(self, node): |
1083 | 780 """return or calculate a delta between a node and its predecessor""" |
119
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781 r = self.rev(node) |
1941
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782 return self.revdiff(r - 1, r) |
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783 |
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784 def revdiff(self, rev1, rev2): |
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785 """return or calculate a delta between two revisions""" |
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786 b1 = self.base(rev1) |
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787 b2 = self.base(rev2) |
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788 if b1 == b2 and rev1 + 1 == rev2: |
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789 return self.chunk(rev2) |
119
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790 else: |
1941
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791 return self.diff(self.revision(self.node(rev1)), |
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792 self.revision(self.node(rev2))) |
119
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793 |
0
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794 def revision(self, node): |
1083 | 795 """return an uncompressed revision of a given""" |
36
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796 if node == nullid: return "" |
0
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797 if self.cache and self.cache[0] == node: return self.cache[2] |
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798 |
1083 | 799 # look up what we need to read |
0
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800 text = None |
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801 rev = self.rev(node) |
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802 base = self.base(rev) |
0
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803 |
2073 | 804 if self.inlinedata(): |
805 # we probably have the whole chunk cached | |
806 df = None | |
807 else: | |
808 df = self.opener(self.datafile) | |
2072 | 809 |
1083 | 810 # do we have useful data cached? |
0
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811 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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812 base = self.cache[1] |
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813 text = self.cache[2] |
2079 | 814 self.loadindex(base, rev + 1) |
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815 else: |
2079 | 816 self.loadindex(base, rev + 1) |
2072 | 817 text = self.chunk(base, df=df) |
0
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818 |
71
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|
819 bins = [] |
64 | 820 for r in xrange(base + 1, rev + 1): |
2072 | 821 bins.append(self.chunk(r, df=df)) |
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822 |
1941
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823 text = self.patches(text, bins) |
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824 |
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825 p1, p2 = self.parents(node) |
26 | 826 if node != hash(text, p1, p2): |
1402
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827 raise RevlogError(_("integrity check failed on %s:%d") |
98 | 828 % (self.datafile, rev)) |
0
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829 |
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830 self.cache = (node, rev, text) |
515 | 831 return text |
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832 |
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833 def checkinlinesize(self, tr, fp=None): |
2073 | 834 if not self.inlinedata(): |
835 return | |
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836 if not fp: |
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837 fp = self.opener(self.indexfile, 'r') |
2082
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838 fp.seek(0, 2) |
2073 | 839 size = fp.tell() |
840 if size < 131072: | |
841 return | |
2084 | 842 trinfo = tr.find(self.indexfile) |
843 if trinfo == None: | |
844 raise RevlogError(_("%s not found in the transaction" % | |
845 self.indexfile)) | |
846 | |
847 trindex = trinfo[2] | |
848 dataoff = self.start(trindex) | |
849 | |
850 tr.add(self.datafile, dataoff) | |
2073 | 851 df = self.opener(self.datafile, 'w') |
852 calc = struct.calcsize(self.indexformat) | |
853 for r in xrange(self.count()): | |
854 start = self.start(r) + (r + 1) * calc | |
855 length = self.length(r) | |
856 fp.seek(start) | |
857 d = fp.read(length) | |
858 df.write(d) | |
859 fp.close() | |
860 df.close() | |
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861 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
2073 | 862 self.version &= ~(REVLOGNGINLINEDATA) |
863 if self.count(): | |
864 x = self.index[0] | |
865 e = struct.pack(self.indexformat, *x)[4:] | |
866 l = struct.pack(versionformat, self.version) | |
867 fp.write(l) | |
868 fp.write(e) | |
869 | |
870 for i in xrange(1, self.count()): | |
871 x = self.index[i] | |
872 e = struct.pack(self.indexformat, *x) | |
873 fp.write(e) | |
874 | |
2076
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875 # if we don't call rename, the temp file will never replace the |
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|
876 # real index |
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|
877 fp.rename() |
2084 | 878 |
879 tr.replace(self.indexfile, trindex * calc) | |
2073 | 880 self.chunkcache = None |
881 | |
644 | 882 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
1083 | 883 """add a revision to the log |
884 | |
885 text - the revision data to add | |
886 transaction - the transaction object used for rollback | |
887 link - the linkrev data to add | |
888 p1, p2 - the parent nodeids of the revision | |
889 d - an optional precomputed delta | |
890 """ | |
0
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891 if text is None: text = "" |
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892 if p1 is None: p1 = self.tip() |
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|
893 if p2 is None: p2 = nullid |
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894 |
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895 node = hash(text, p1, p2) |
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896 |
301 | 897 if node in self.nodemap: |
898 return node | |
899 | |
0
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900 n = self.count() |
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901 t = n - 1 |
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902 |
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903 if n: |
64 | 904 base = self.base(t) |
905 start = self.start(base) | |
0
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906 end = self.end(t) |
644 | 907 if not d: |
908 prev = self.revision(self.tip()) | |
1533
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909 d = self.diff(prev, str(text)) |
98 | 910 data = compress(d) |
1533
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1509
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911 l = len(data[1]) + len(data[0]) |
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912 dist = end - start + l |
0
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913 |
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914 # full versions are inserted when the needed deltas |
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915 # become comparable to the uncompressed text |
64 | 916 if not n or dist > len(text) * 2: |
0
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917 data = compress(text) |
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918 l = len(data[1]) + len(data[0]) |
0
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919 base = n |
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920 else: |
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921 base = self.base(t) |
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922 |
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923 offset = 0 |
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924 if t >= 0: |
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925 offset = self.end(t) |
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926 |
2142
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Thomas Arendsen Hein <thomas@intevation.de>
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|
927 if self.version == REVLOGV0: |
2072 | 928 e = (offset, l, base, link, p1, p2, node) |
929 else: | |
930 e = (self.offset_type(offset, 0), l, len(text), | |
931 base, link, self.rev(p1), self.rev(p2), node) | |
515 | 932 |
0
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933 self.index.append(e) |
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934 self.nodemap[node] = n |
2072 | 935 entry = struct.pack(self.indexformat, *e) |
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936 |
2073 | 937 if not self.inlinedata(): |
938 transaction.add(self.datafile, offset) | |
939 transaction.add(self.indexfile, n * len(entry)) | |
940 f = self.opener(self.datafile, "a") | |
941 if data[0]: | |
942 f.write(data[0]) | |
943 f.write(data[1]) | |
2089
cb99c711c59f
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944 f.close() |
2073 | 945 f = self.opener(self.indexfile, "a") |
946 else: | |
947 f = self.opener(self.indexfile, "a+") | |
2077
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948 f.seek(0, 2) |
2084 | 949 transaction.add(self.indexfile, f.tell(), self.count() - 1) |
2072 | 950 |
2142
8a1e2a9c7013
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Thomas Arendsen Hein <thomas@intevation.de>
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|
951 if len(self.index) == 1 and self.version != REVLOGV0: |
2072 | 952 l = struct.pack(versionformat, self.version) |
953 f.write(l) | |
954 entry = entry[4:] | |
955 | |
956 f.write(entry) | |
0
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957 |
2073 | 958 if self.inlinedata(): |
959 f.write(data[0]) | |
960 f.write(data[1]) | |
2075
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961 self.checkinlinesize(transaction, f) |
2073 | 962 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
963 self.cache = (node, n, text) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
964 return node |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
965 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
966 def ancestor(self, a, b): |
1083 | 967 """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
|
968 |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
969 # 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
|
970 if a == b: |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
971 return a |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
972 ra = self.rev(a) |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
973 rb = self.rev(b) |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
974 if ra < rb: |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
975 last = b |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
976 first = a |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
977 else: |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
978 last = a |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
979 first = b |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
980 |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
981 # 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
|
982 reachable = self.reachable(last, stop=self.parents(first)[0]) |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
983 if first in reachable: |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
984 return first |
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
985 |
147 | 986 # calculate the distance of every node from root |
987 dist = {nullid: 0} | |
988 for i in xrange(self.count()): | |
989 n = self.node(i) | |
990 p1, p2 = self.parents(n) | |
991 dist[n] = max(dist[p1], dist[p2]) + 1 | |
515 | 992 |
147 | 993 # traverse ancestors in order of decreasing distance from root |
994 def ancestors(node): | |
995 # we store negative distances because heap returns smallest member | |
996 h = [(-dist[node], node)] | |
997 seen = {} | |
998 while h: | |
999 d, n = heapq.heappop(h) | |
1000 if n not in seen: | |
1001 seen[n] = 1 | |
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1002 yield (-d, n) |
147 | 1003 for p in self.parents(n): |
1004 heapq.heappush(h, (-dist[p], p)) | |
45
f2b2d5daec30
Fix recursion depth trouble with ancestor algorithm
mpm@selenic.com
parents:
41
diff
changeset
|
1005 |
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1006 def generations(node): |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1007 sg, s = None, {} |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1008 for g,n in ancestors(node): |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1009 if g != sg: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1010 if sg: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1011 yield sg, s |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1012 sg, s = g, {n:1} |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1013 else: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1014 s[n] = 1 |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1015 yield sg, s |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1016 |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1017 x = generations(a) |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1018 y = generations(b) |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1019 gx = x.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1020 gy = y.next() |
45
f2b2d5daec30
Fix recursion depth trouble with ancestor algorithm
mpm@selenic.com
parents:
41
diff
changeset
|
1021 |
147 | 1022 # increment each ancestor list until it is closer to root than |
1023 # the other, or they match | |
1024 while 1: | |
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1025 #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
|
1026 if gx[0] == gy[0]: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1027 # find the intersection |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1028 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
|
1029 if i: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1030 return i[0] |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1031 else: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1032 #print "next" |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1033 gy = y.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1034 gx = x.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1035 elif gx[0] < gy[0]: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1036 #print "next y" |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1037 gy = y.next() |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1038 else: |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1039 #print "next x" |
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1040 gx = x.next() |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
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|
1041 |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1042 def group(self, nodelist, lookup, infocollect=None): |
1083 | 1043 """calculate a delta group |
46 | 1044 |
1083 | 1045 Given a list of changeset revs, return a set of deltas and |
1046 metadata corresponding to nodes. the first delta is | |
1047 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1048 have this parent as it has all history before these | |
1049 changesets. parent is parent[0] | |
1050 """ | |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1051 revs = [self.rev(n) for n in nodelist] |
46 | 1052 |
1053 # if we don't have any revisions touched by these changesets, bail | |
192 | 1054 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
|
1055 yield changegroup.closechunk() |
192 | 1056 return |
46 | 1057 |
1058 # add the parent of the first rev | |
1059 p = self.parents(self.node(revs[0]))[0] | |
1060 revs.insert(0, self.rev(p)) | |
1061 | |
1062 # build deltas | |
71
47c9a869adee
Add mdiff.patches to speed up applying thousands of patches to the manifest
mpm@selenic.com
parents:
67
diff
changeset
|
1063 for d in xrange(0, len(revs) - 1): |
46 | 1064 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
|
1065 nb = self.node(b) |
192 | 1066 |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1067 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
|
1068 infocollect(nb) |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1069 |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
1070 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
|
1071 p = self.parents(nb) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1072 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
|
1073 yield changegroup.genchunk("%s%s" % (meta, d)) |
46 | 1074 |
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 |
1062 | 1077 def addgroup(self, revs, linkmapper, transaction, unique=0): |
1083 | 1078 """ |
1079 add a delta group | |
46 | 1080 |
1083 | 1081 given a set of deltas, add them to the revision log. the |
1082 first delta is against its parent, which should be in our | |
1083 log, the rest are against the previous delta. | |
1084 """ | |
1085 | |
1086 #track the base of the current delta log | |
46 | 1087 r = self.count() |
1088 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
|
1089 node = None |
515 | 1090 |
655 | 1091 base = prev = -1 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1092 start = end = textlen = 0 |
46 | 1093 if r: |
1094 end = self.end(t) | |
1095 | |
2072 | 1096 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
|
1097 ifh.seek(0, 2) |
2084 | 1098 transaction.add(self.indexfile, ifh.tell(), self.count()) |
2073 | 1099 if self.inlinedata(): |
1100 dfh = None | |
1101 else: | |
1102 transaction.add(self.datafile, end) | |
1103 dfh = self.opener(self.datafile, "a") | |
46 | 1104 |
1105 # loop through our set of deltas | |
192 | 1106 chain = None |
1107 for chunk in revs: | |
1108 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
94 | 1109 link = linkmapper(cs) |
77 | 1110 if node in self.nodemap: |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1111 # this can happen if two branches make the same change |
1218
cde6818e082a
Add preliminary support for the bundle and unbundle commands
mpm@selenic.com
parents:
1214
diff
changeset
|
1112 # if unique: |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1400
diff
changeset
|
1113 # raise RevlogError(_("already have %s") % hex(node[:4])) |
653
94cdd02792b5
Fix corruption resulting from skipping parts of a revision group
Matt Mackall <mpm@selenic.com>
parents:
651
diff
changeset
|
1114 chain = node |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
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|
1115 continue |
192 | 1116 delta = chunk[80:] |
1117 | |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1118 for p in (p1, p2): |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1119 if not p in self.nodemap: |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1120 raise RevlogError(_("unknown parent %s") % short(p1)) |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1121 |
192 | 1122 if not chain: |
1123 # retrieve the parent revision of the delta chain | |
1124 chain = p1 | |
1125 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
|
1126 raise RevlogError(_("unknown base %s") % short(chain[:4])) |
46 | 1127 |
1128 # full versions are inserted when the needed deltas become | |
1129 # comparable to the uncompressed text or when the previous | |
1130 # version is not the one we have a delta against. We use | |
1131 # the size of the previous full rev as a proxy for the | |
1132 # current size. | |
1133 | |
1134 if chain == prev: | |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
1135 tempd = compress(delta) |
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
1136 cdelta = tempd[0] + tempd[1] |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1137 textlen = mdiff.patchedsize(textlen, delta) |
46 | 1138 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1139 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
46 | 1140 # flush our writes here so we can read it in revision |
2072 | 1141 if dfh: |
1142 dfh.flush() | |
46 | 1143 ifh.flush() |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1144 text = self.revision(chain) |
73 | 1145 text = self.patches(text, [delta]) |
46 | 1146 chk = self.addrevision(text, transaction, link, p1, p2) |
1147 if chk != node: | |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1400
diff
changeset
|
1148 raise RevlogError(_("consistency error adding group")) |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1149 textlen = len(text) |
46 | 1150 else: |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
1151 if self.version == REVLOGV0: |
2072 | 1152 e = (end, len(cdelta), base, link, p1, p2, node) |
1153 else: | |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1154 e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
2072 | 1155 link, self.rev(p1), self.rev(p2), node) |
46 | 1156 self.index.append(e) |
1157 self.nodemap[node] = r | |
2073 | 1158 if self.inlinedata(): |
1159 ifh.write(struct.pack(self.indexformat, *e)) | |
1160 ifh.write(cdelta) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
1161 self.checkinlinesize(transaction, ifh) |
2073 | 1162 if not self.inlinedata(): |
1163 dfh = self.opener(self.datafile, "a") | |
1164 ifh = self.opener(self.indexfile, "a") | |
1165 else: | |
1166 if not dfh: | |
1167 # addrevision switched from inline to conventional | |
1168 # reopen the index | |
1169 dfh = self.opener(self.datafile, "a") | |
1170 ifh = self.opener(self.indexfile, "a") | |
1171 dfh.write(cdelta) | |
1172 ifh.write(struct.pack(self.indexformat, *e)) | |
46 | 1173 |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1174 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
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1175 base = self.base(t) |
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1711
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1176 start = self.start(base) |
46 | 1177 end = self.end(t) |
1178 | |
2002
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1981
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1179 if node is None: |
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1981
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1180 raise RevlogError(_("group to be added is empty")) |
46 | 1181 return node |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
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1182 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
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1533
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1183 def strip(self, rev, minlink): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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1184 if self.count() == 0 or rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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1185 return |
7ae0ce7a3dc4
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mason@suse.com
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1186 |
2072 | 1187 if isinstance(self.index, lazyindex): |
1188 self.loadindexmap() | |
1189 | |
1535
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mason@suse.com
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1190 # When stripping away a revision, we need to make sure it |
7ae0ce7a3dc4
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mason@suse.com
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1191 # does not actually belong to an older changeset. |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
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1192 # The minlink parameter defines the oldest revision |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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1193 # we're allowed to strip away. |
2072 | 1194 while minlink > self.index[rev][-4]: |
1535
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mason@suse.com
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1195 rev += 1 |
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mason@suse.com
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1196 if rev >= self.count(): |
7ae0ce7a3dc4
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mason@suse.com
parents:
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1197 return |
7ae0ce7a3dc4
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mason@suse.com
parents:
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1198 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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1199 # first truncate the files on disk |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
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1200 end = self.start(rev) |
2073 | 1201 if not self.inlinedata(): |
1202 df = self.opener(self.datafile, "a") | |
1203 df.truncate(end) | |
1204 end = rev * struct.calcsize(self.indexformat) | |
1205 else: | |
1206 end += rev * struct.calcsize(self.indexformat) | |
2072 | 1207 |
1208 indexf = self.opener(self.indexfile, "a") | |
1209 indexf.truncate(end) | |
1535
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mason@suse.com
parents:
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1210 |
7ae0ce7a3dc4
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mason@suse.com
parents:
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1211 # then reset internal state in memory to forget those revisions |
7ae0ce7a3dc4
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mason@suse.com
parents:
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1212 self.cache = None |
1711 | 1213 self.chunkcache = None |
2072 | 1214 for x in xrange(rev, self.count()): |
1215 del self.nodemap[self.node(x)] | |
1535
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mason@suse.com
parents:
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1216 |
2072 | 1217 del self.index[rev:] |
1535
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mason@suse.com
parents:
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1218 |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
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1219 def checksize(self): |
1a216cb4ee64
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Matt Mackall <mpm@selenic.com>
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1220 expected = 0 |
1a216cb4ee64
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Matt Mackall <mpm@selenic.com>
parents:
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1221 if self.count(): |
1a216cb4ee64
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Matt Mackall <mpm@selenic.com>
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1222 expected = self.end(self.count() - 1) |
1667
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verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
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1223 |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
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1224 try: |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
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1225 f = self.opener(self.datafile) |
249ca10d37f4
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Matt Mackall <mpm@selenic.com>
parents:
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1226 f.seek(0, 2) |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
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1227 actual = f.tell() |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
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1228 dd = actual - expected |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
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1229 except IOError, inst: |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
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1230 if inst.errno != errno.ENOENT: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
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1231 raise |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
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1232 dd = 0 |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
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1233 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
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1234 try: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
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1235 f = self.opener(self.indexfile) |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
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1236 f.seek(0, 2) |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
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1237 actual = f.tell() |
2072 | 1238 s = struct.calcsize(self.indexformat) |
1667
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Matt Mackall <mpm@selenic.com>
parents:
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1239 i = actual / s |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
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1240 di = actual - (i * s) |
2073 | 1241 if self.inlinedata(): |
1242 databytes = 0 | |
1243 for r in xrange(self.count()): | |
1244 databytes += self.length(r) | |
1245 dd = 0 | |
1246 di = actual - self.count() * s - databytes | |
1667
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
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1247 except IOError, inst: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
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1248 if inst.errno != errno.ENOENT: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
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1249 raise |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
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1250 di = 0 |
daff3ef0de8d
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Matt Mackall <mpm@selenic.com>
parents:
1660
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1251 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
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1252 return (dd, di) |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
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1253 |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
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1254 |