Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/revlog.py @ 2222:c9e264b115e6
Use revlogng and inlined data files by default
This changes revlog specify revlogng by default. Inlined
data files are also used unless a flags option is found in the .hgrc.
Some example hgrc files:
[revlog]
# use the original revlog format
format=0
[revlog]
# use revlogng. Because no flags are included, inlined data files
# also be selected
format=1
[revlog]
# use revlogng but do not inline the data files with the index
flags=
[revlog]
# the new default
format=1
flags=inline
| author | mason@suse.com |
|---|---|
| date | Mon, 08 May 2006 14:26:18 -0500 |
| parents | 6886bc0b77af |
| children | 45aef5ddcdbe |
| rev | line source |
|---|---|
| 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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| 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 """ | |
| 2079 | 90 def __init__(self, dataf, size, indexformat, shaoffset): |
| 91 self.dataf = dataf | |
| 92 self.format = indexformat | |
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93 self.s = struct.calcsize(indexformat) |
| 2072 | 94 self.indexformat = indexformat |
| 2079 | 95 self.datasize = size |
| 96 self.l = size/self.s | |
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97 self.index = [None] * self.l |
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98 self.map = {nullid: -1} |
| 2079 | 99 self.allmap = 0 |
| 323 | 100 self.all = 0 |
| 2079 | 101 self.mapfind_count = 0 |
| 102 self.shaoffset = shaoffset | |
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103 |
| 2079 | 104 def loadmap(self): |
| 105 """ | |
| 106 during a commit, we need to make sure the rev being added is | |
| 107 not a duplicate. This requires loading the entire index, | |
| 108 which is fairly slow. loadmap can load up just the node map, | |
| 109 which takes much less time. | |
| 110 """ | |
| 111 if self.allmap: return | |
| 112 start = 0 | |
| 113 end = self.datasize | |
| 114 self.allmap = 1 | |
| 115 cur = 0 | |
| 116 count = 0 | |
| 117 blocksize = self.s * 256 | |
| 118 self.dataf.seek(0) | |
| 119 while cur < end: | |
| 120 data = self.dataf.read(blocksize) | |
| 121 off = 0 | |
| 122 for x in xrange(256): | |
| 123 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
| 124 self.map[n] = count | |
| 125 count += 1 | |
| 126 if count >= self.l: | |
| 127 break | |
| 128 off += self.s | |
| 129 cur += blocksize | |
| 130 | |
| 131 def loadblock(self, blockstart, blocksize, data=None): | |
| 323 | 132 if self.all: return |
| 2079 | 133 if data is None: |
| 134 self.dataf.seek(blockstart) | |
| 135 data = self.dataf.read(blocksize) | |
| 136 lend = len(data) / self.s | |
| 137 i = blockstart / self.s | |
| 138 off = 0 | |
| 139 for x in xrange(lend): | |
| 140 if self.index[i + x] == None: | |
| 141 b = data[off : off + self.s] | |
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142 self.index[i + x] = b |
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143 n = b[self.shaoffset:self.shaoffset + 20] |
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144 self.map[n] = i + x |
| 2079 | 145 off += self.s |
| 146 | |
| 147 def findnode(self, node): | |
| 148 """search backwards through the index file for a specific node""" | |
| 149 if self.allmap: return None | |
| 150 | |
| 151 # hg log will cause many many searches for the manifest | |
| 152 # nodes. After we get called a few times, just load the whole | |
| 153 # thing. | |
| 154 if self.mapfind_count > 8: | |
| 155 self.loadmap() | |
| 156 if node in self.map: | |
| 157 return node | |
| 158 return None | |
| 159 self.mapfind_count += 1 | |
| 160 last = self.l - 1 | |
| 161 while self.index[last] != None: | |
| 162 if last == 0: | |
| 163 self.all = 1 | |
| 164 self.allmap = 1 | |
| 165 return None | |
| 166 last -= 1 | |
| 167 end = (last + 1) * self.s | |
| 168 blocksize = self.s * 256 | |
| 169 while end >= 0: | |
| 170 start = max(end - blocksize, 0) | |
| 171 self.dataf.seek(start) | |
| 172 data = self.dataf.read(end - start) | |
| 173 findend = end - start | |
| 174 while True: | |
| 175 # we're searching backwards, so weh have to make sure | |
| 176 # we don't find a changeset where this node is a parent | |
| 177 off = data.rfind(node, 0, findend) | |
| 178 findend = off | |
| 179 if off >= 0: | |
| 180 i = off / self.s | |
| 181 off = i * self.s | |
| 182 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
| 183 if n == node: | |
| 184 self.map[n] = i + start / self.s | |
| 185 return node | |
| 186 else: | |
| 187 break | |
| 188 end -= blocksize | |
| 189 return None | |
| 190 | |
| 191 def loadindex(self, i=None, end=None): | |
| 192 if self.all: return | |
| 193 all = False | |
| 194 if i == None: | |
| 195 blockstart = 0 | |
| 196 blocksize = (512 / self.s) * self.s | |
| 197 end = self.datasize | |
| 198 all = True | |
| 323 | 199 else: |
| 2079 | 200 if end: |
| 201 blockstart = i * self.s | |
| 202 end = end * self.s | |
| 203 blocksize = end - blockstart | |
| 204 else: | |
| 205 blockstart = (i & ~(32)) * self.s | |
| 206 blocksize = self.s * 64 | |
| 207 end = blockstart + blocksize | |
| 208 while blockstart < end: | |
| 209 self.loadblock(blockstart, blocksize) | |
| 210 blockstart += blocksize | |
| 211 if all: self.all = True | |
| 515 | 212 |
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213 class lazyindex(object): |
| 1083 | 214 """a lazy version of the index array""" |
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215 def __init__(self, parser): |
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216 self.p = parser |
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217 def __len__(self): |
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218 return len(self.p.index) |
| 115 | 219 def load(self, pos): |
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220 if pos < 0: |
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221 pos += len(self.p.index) |
| 2079 | 222 self.p.loadindex(pos) |
| 115 | 223 return self.p.index[pos] |
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224 def __getitem__(self, pos): |
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225 ret = self.p.index[pos] or self.load(pos) |
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226 if isinstance(ret, str): |
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227 ret = struct.unpack(self.p.indexformat, ret) |
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228 return ret |
| 2072 | 229 def __setitem__(self, pos, item): |
| 230 self.p.index[pos] = item | |
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231 def __delitem__(self, pos): |
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232 del self.p.index[pos] |
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233 def append(self, e): |
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234 self.p.index.append(e) |
| 515 | 235 |
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236 class lazymap(object): |
| 1083 | 237 """a lazy version of the node map""" |
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238 def __init__(self, parser): |
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239 self.p = parser |
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240 def load(self, key): |
| 2079 | 241 n = self.p.findnode(key) |
| 242 if n == None: | |
| 1214 | 243 raise KeyError(key) |
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244 def __contains__(self, key): |
| 2079 | 245 if key in self.p.map: |
| 246 return True | |
| 247 self.p.loadmap() | |
| 323 | 248 return key in self.p.map |
| 97 | 249 def __iter__(self): |
| 469 | 250 yield nullid |
| 97 | 251 for i in xrange(self.p.l): |
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252 ret = self.p.index[i] |
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253 if not ret: |
| 2079 | 254 self.p.loadindex(i) |
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255 ret = self.p.index[i] |
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256 if isinstance(ret, str): |
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257 ret = struct.unpack(self.p.indexformat, ret) |
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258 yield ret[-1] |
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259 def __getitem__(self, key): |
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260 try: |
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261 return self.p.map[key] |
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262 except KeyError: |
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263 try: |
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264 self.load(key) |
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265 return self.p.map[key] |
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266 except KeyError: |
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267 raise KeyError("node " + hex(key)) |
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268 def __setitem__(self, key, val): |
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269 self.p.map[key] = val |
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270 def __delitem__(self, key): |
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271 del self.p.map[key] |
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272 |
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273 class RevlogError(Exception): pass |
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274 |
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275 class revlog(object): |
| 1083 | 276 """ |
| 277 the underlying revision storage object | |
| 278 | |
| 279 A revlog consists of two parts, an index and the revision data. | |
| 280 | |
| 281 The index is a file with a fixed record size containing | |
| 282 information on each revision, includings its nodeid (hash), the | |
| 283 nodeids of its parents, the position and offset of its data within | |
| 284 the data file, and the revision it's based on. Finally, each entry | |
| 285 contains a linkrev entry that can serve as a pointer to external | |
| 286 data. | |
| 287 | |
| 288 The revision data itself is a linear collection of data chunks. | |
| 289 Each chunk represents a revision and is usually represented as a | |
| 290 delta against the previous chunk. To bound lookup time, runs of | |
| 291 deltas are limited to about 2 times the length of the original | |
| 292 version data. This makes retrieval of a version proportional to | |
| 293 its size, or O(1) relative to the number of revisions. | |
| 294 | |
| 295 Both pieces of the revlog are written to in an append-only | |
| 296 fashion, which means we never need to rewrite a file to insert or | |
| 297 remove data, and can use some simple techniques to avoid the need | |
| 298 for locking while reading. | |
| 299 """ | |
|
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300 def __init__(self, opener, indexfile, datafile, |
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301 defversion=REVLOG_DEFAULT_VERSION): |
| 1083 | 302 """ |
| 303 create a revlog object | |
| 304 | |
| 305 opener is a function that abstracts the file opening operation | |
| 306 and can be used to implement COW semantics or the like. | |
| 307 """ | |
|
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308 self.indexfile = indexfile |
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309 self.datafile = datafile |
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310 self.opener = opener |
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311 |
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312 self.indexstat = None |
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313 self.cache = None |
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314 self.chunkcache = None |
| 2072 | 315 self.defversion = defversion |
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316 self.load() |
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317 |
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318 def load(self): |
| 2072 | 319 v = self.defversion |
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320 try: |
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321 f = self.opener(self.indexfile) |
| 2079 | 322 i = f.read(4) |
| 323 f.seek(0) | |
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324 except IOError, inst: |
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325 if inst.errno != errno.ENOENT: |
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326 raise |
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327 i = "" |
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328 else: |
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329 try: |
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330 st = util.fstat(f) |
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331 except AttributeError, inst: |
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332 st = None |
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333 else: |
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334 oldst = self.indexstat |
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335 if (oldst and st.st_dev == oldst.st_dev |
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336 and st.st_ino == oldst.st_ino |
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337 and st.st_mtime == oldst.st_mtime |
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338 and st.st_ctime == oldst.st_ctime): |
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339 return |
| 2072 | 340 self.indexstat = st |
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341 if len(i) > 0: |
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342 v = struct.unpack(versionformat, i)[0] |
| 2073 | 343 flags = v & ~0xFFFF |
| 344 fmt = v & 0xFFFF | |
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345 if fmt == REVLOGV0: |
| 2073 | 346 if flags: |
| 347 raise RevlogError(_("index %s invalid flags %x for format v0" % | |
| 348 (self.indexfile, flags))) | |
| 349 elif fmt == REVLOGNG: | |
| 350 if flags & ~REVLOGNGINLINEDATA: | |
| 351 raise RevlogError(_("index %s invalid flags %x for revlogng" % | |
| 352 (self.indexfile, flags))) | |
| 353 else: | |
| 354 raise RevlogError(_("index %s invalid format %d" % | |
| 355 (self.indexfile, fmt))) | |
| 2072 | 356 self.version = v |
|
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357 if v == REVLOGV0: |
| 2072 | 358 self.indexformat = indexformatv0 |
| 2079 | 359 shaoffset = v0shaoffset |
| 2072 | 360 else: |
| 361 self.indexformat = indexformatng | |
| 2079 | 362 shaoffset = ngshaoffset |
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363 |
| 2072 | 364 if i: |
| 2073 | 365 if not self.inlinedata() and st and st.st_size > 10000: |
| 2072 | 366 # big index, let's parse it on demand |
| 2079 | 367 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset) |
| 2072 | 368 self.index = lazyindex(parser) |
| 369 self.nodemap = lazymap(parser) | |
| 370 else: | |
| 2079 | 371 i = f.read() |
| 2072 | 372 self.parseindex(i) |
| 2073 | 373 if self.inlinedata(): |
| 374 # we've already got the entire data file read in, save it | |
| 375 # in the chunk data | |
| 376 self.chunkcache = (0, i) | |
|
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377 if self.version != REVLOGV0: |
| 2072 | 378 e = list(self.index[0]) |
| 379 type = self.ngtype(e[0]) | |
| 380 e[0] = self.offset_type(0, type) | |
| 381 self.index[0] = e | |
|
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382 else: |
| 2072 | 383 self.nodemap = { nullid: -1} |
| 384 self.index = [] | |
| 385 | |
| 386 | |
| 387 def parseindex(self, data): | |
| 388 s = struct.calcsize(self.indexformat) | |
| 389 l = len(data) | |
| 390 self.index = [] | |
| 391 self.nodemap = {nullid: -1} | |
| 2073 | 392 inline = self.inlinedata() |
| 2072 | 393 off = 0 |
| 394 n = 0 | |
| 395 while off < l: | |
| 396 e = struct.unpack(self.indexformat, data[off:off + s]) | |
| 397 self.index.append(e) | |
| 398 self.nodemap[e[-1]] = n | |
| 399 n += 1 | |
| 400 off += s | |
| 2073 | 401 if inline: |
| 402 off += e[1] | |
|
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403 |
| 2072 | 404 def ngoffset(self, q): |
| 405 if q & 0xFFFF: | |
| 406 raise RevlogError(_('%s: incompatible revision flag %x') % | |
|
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407 (self.indexfile, q)) |
| 2072 | 408 return long(q >> 16) |
| 409 | |
| 410 def ngtype(self, q): | |
| 411 return int(q & 0xFFFF) | |
|
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412 |
| 2072 | 413 def offset_type(self, offset, type): |
| 414 return long(long(offset) << 16 | type) | |
| 415 | |
| 2079 | 416 def loadindex(self, start, end): |
| 417 """load a block of indexes all at once from the lazy parser""" | |
| 418 if isinstance(self.index, lazyindex): | |
| 419 self.index.p.loadindex(start, end) | |
| 420 | |
| 2072 | 421 def loadindexmap(self): |
| 422 """loads both the map and the index from the lazy parser""" | |
| 423 if isinstance(self.index, lazyindex): | |
| 424 p = self.index.p | |
| 2079 | 425 p.loadindex() |
| 426 self.nodemap = p.map | |
| 427 | |
| 428 def loadmap(self): | |
| 429 """loads the map from the lazy parser""" | |
| 430 if isinstance(self.nodemap, lazymap): | |
| 431 self.nodemap.p.loadmap() | |
| 432 self.nodemap = self.nodemap.p.map | |
|
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433 |
| 2073 | 434 def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
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435 def tip(self): return self.node(len(self.index) - 1) |
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436 def count(self): return len(self.index) |
| 2072 | 437 def node(self, rev): |
| 438 return (rev < 0) and nullid or self.index[rev][-1] | |
|
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439 def rev(self, node): |
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440 try: |
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441 return self.nodemap[node] |
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442 except KeyError: |
|
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443 raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) |
| 2072 | 444 def linkrev(self, node): return self.index[self.rev(node)][-4] |
| 2 | 445 def parents(self, node): |
| 446 if node == nullid: return (nullid, nullid) | |
| 2072 | 447 r = self.rev(node) |
| 448 d = self.index[r][-3:-1] | |
|
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449 if self.version == REVLOGV0: |
| 2072 | 450 return d |
| 451 return [ self.node(x) for x in d ] | |
| 452 def start(self, rev): | |
| 453 if rev < 0: | |
| 454 return -1 | |
|
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455 if self.version != REVLOGV0: |
| 2072 | 456 return self.ngoffset(self.index[rev][0]) |
| 457 return self.index[rev][0] | |
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458 |
| 2072 | 459 def end(self, rev): return self.start(rev) + self.length(rev) |
|
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460 |
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461 def size(self, rev): |
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462 """return the length of the uncompressed text for a given revision""" |
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463 l = -1 |
|
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464 if self.version != REVLOGV0: |
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465 l = self.index[rev][2] |
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466 if l >= 0: |
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467 return l |
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468 |
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469 t = self.revision(self.node(rev)) |
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470 return len(t) |
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471 |
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472 # alternate implementation, The advantage to this code is it |
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473 # will be faster for a single revision. But, the results are not |
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474 # cached, so finding the size of every revision will be slower. |
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475 """ |
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476 if self.cache and self.cache[1] == rev: |
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477 return len(self.cache[2]) |
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478 |
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479 base = self.base(rev) |
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480 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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481 base = self.cache[1] |
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482 text = self.cache[2] |
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483 else: |
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484 text = self.revision(self.node(base)) |
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485 |
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486 l = len(text) |
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487 for x in xrange(base + 1, rev + 1): |
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488 l = mdiff.patchedsize(l, self.chunk(x)) |
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489 return l |
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490 """ |
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491 |
|
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492 def length(self, rev): |
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493 if rev < 0: |
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494 return 0 |
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495 else: |
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496 return self.index[rev][1] |
| 2072 | 497 def base(self, rev): return (rev < 0) and rev or self.index[rev][-5] |
|
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498 |
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499 def reachable(self, rev, stop=None): |
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500 reachable = {} |
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501 visit = [rev] |
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502 reachable[rev] = 1 |
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503 if stop: |
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504 stopn = self.rev(stop) |
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505 else: |
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506 stopn = 0 |
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507 while visit: |
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508 n = visit.pop(0) |
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509 if n == stop: |
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510 continue |
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511 if n == nullid: |
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512 continue |
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513 for p in self.parents(n): |
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514 if self.rev(p) < stopn: |
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515 continue |
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516 if p not in reachable: |
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517 reachable[p] = 1 |
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518 visit.append(p) |
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519 return reachable |
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520 |
|
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521 def nodesbetween(self, roots=None, heads=None): |
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522 """Return a tuple containing three elements. Elements 1 and 2 contain |
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523 a final list bases and heads after all the unreachable ones have been |
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524 pruned. Element 0 contains a topologically sorted list of all |
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525 |
|
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526 nodes that satisfy these constraints: |
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527 1. All nodes must be descended from a node in roots (the nodes on |
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528 roots are considered descended from themselves). |
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529 2. All nodes must also be ancestors of a node in heads (the nodes in |
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|
530 heads are considered to be their own ancestors). |
|
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531 |
|
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|
532 If roots is unspecified, nullid is assumed as the only root. |
|
518da3c3b6ce
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|
533 If heads is unspecified, it is taken to be the output of the |
|
518da3c3b6ce
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|
534 heads method (i.e. a list of all nodes in the repository that |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
535 have no children).""" |
|
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Fix to handle case of empty list for roots or heads in nodesbetween.
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536 nonodes = ([], [], []) |
|
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|
537 if roots is not None: |
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|
538 roots = list(roots) |
|
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539 if not roots: |
|
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540 return nonodes |
|
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|
541 lowestrev = min([self.rev(n) for n in roots]) |
|
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This implements the nodesbetween method, and it removes the newer method
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|
542 else: |
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This implements the nodesbetween method, and it removes the newer method
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|
543 roots = [nullid] # Everybody's a descendent of nullid |
|
518da3c3b6ce
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|
544 lowestrev = -1 |
|
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This implements the nodesbetween method, and it removes the newer method
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|
545 if (lowestrev == -1) and (heads is None): |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
546 # We want _all_ the nodes! |
|
518da3c3b6ce
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|
547 return ([self.node(r) for r in xrange(0, self.count())], |
|
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|
548 [nullid], list(self.heads())) |
|
518da3c3b6ce
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|
549 if heads is None: |
|
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This implements the nodesbetween method, and it removes the newer method
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|
550 # All nodes are ancestors, so the latest ancestor is the last |
|
518da3c3b6ce
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|
551 # node. |
|
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|
552 highestrev = self.count() - 1 |
|
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|
553 # Set ancestors to None to signal that every node is an ancestor. |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
554 ancestors = None |
|
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This implements the nodesbetween method, and it removes the newer method
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|
555 # Set heads to an empty dictionary for later discovery of heads |
|
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This implements the nodesbetween method, and it removes the newer method
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|
556 heads = {} |
|
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|
557 else: |
|
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|
558 heads = list(heads) |
|
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559 if not heads: |
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560 return nonodes |
|
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561 ancestors = {} |
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|
562 # Start at the top and keep marking parents until we're done. |
|
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563 nodestotag = heads[:] |
|
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|
564 # Turn heads into a dictionary so we can remove 'fake' heads. |
|
518da3c3b6ce
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|
565 # Also, later we will be using it to filter out the heads we can't |
|
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This implements the nodesbetween method, and it removes the newer method
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|
566 # find from roots. |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
567 heads = dict.fromkeys(heads, 0) |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
568 # Remember where the top was so we can use it as a limit later. |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
569 highestrev = max([self.rev(n) for n in nodestotag]) |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
570 while nodestotag: |
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This implements the nodesbetween method, and it removes the newer method
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|
571 # grab a node to tag |
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572 n = nodestotag.pop() |
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|
573 # Never tag nullid |
|
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574 if n == nullid: |
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518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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575 continue |
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|
576 # A node's revision number represents its place in a |
|
518da3c3b6ce
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|
577 # topologically sorted list of nodes. |
|
518da3c3b6ce
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|
578 r = self.rev(n) |
|
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|
579 if r >= lowestrev: |
|
518da3c3b6ce
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|
580 if n not in ancestors: |
|
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|
581 # If we are possibly a descendent of one of the roots |
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|
582 # and we haven't already been marked as an ancestor |
|
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|
583 ancestors[n] = 1 # Mark as ancestor |
|
518da3c3b6ce
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|
584 # Add non-nullid parents to list of nodes to tag. |
|
518da3c3b6ce
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changeset
|
585 nodestotag.extend([p for p in self.parents(n) if |
|
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|
586 p != nullid]) |
|
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diff
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|
587 elif n in heads: # We've seen it before, is it a fake head? |
|
518da3c3b6ce
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|
588 # So it is, real heads should not be the ancestors of |
|
518da3c3b6ce
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|
589 # any other heads. |
|
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|
590 heads.pop(n) |
|
1459
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diff
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|
591 if not ancestors: |
|
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26e73acc0cdf
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|
592 return nonodes |
|
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diff
changeset
|
593 # Now that we have our set of ancestors, we want to remove any |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
594 # roots that are not ancestors. |
|
518da3c3b6ce
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changeset
|
595 |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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diff
changeset
|
596 # If one of the roots was nullid, everything is included anyway. |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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diff
changeset
|
597 if lowestrev > -1: |
|
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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diff
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|
598 # But, since we weren't, let's recompute the lowest rev to not |
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599 # include roots that aren't ancestors. |
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600 |
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601 # Filter out roots that aren't ancestors of heads |
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602 roots = [n for n in roots if n in ancestors] |
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603 # Recompute the lowest revision |
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604 if roots: |
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605 lowestrev = min([self.rev(n) for n in roots]) |
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606 else: |
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607 # No more roots? Return empty list |
|
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608 return nonodes |
|
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609 else: |
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610 # We are descending from nullid, and don't need to care about |
|
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611 # any other roots. |
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612 lowestrev = -1 |
|
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613 roots = [nullid] |
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614 # Transform our roots list into a 'set' (i.e. a dictionary where the |
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615 # values don't matter. |
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616 descendents = dict.fromkeys(roots, 1) |
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617 # Also, keep the original roots so we can filter out roots that aren't |
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618 # 'real' roots (i.e. are descended from other roots). |
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619 roots = descendents.copy() |
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620 # Our topologically sorted list of output nodes. |
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621 orderedout = [] |
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622 # Don't start at nullid since we don't want nullid in our output list, |
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623 # and if nullid shows up in descedents, empty parents will look like |
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624 # they're descendents. |
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625 for r in xrange(max(lowestrev, 0), highestrev + 1): |
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626 n = self.node(r) |
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627 isdescendent = False |
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628 if lowestrev == -1: # Everybody is a descendent of nullid |
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629 isdescendent = True |
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630 elif n in descendents: |
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631 # n is already a descendent |
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632 isdescendent = True |
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633 # This check only needs to be done here because all the roots |
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634 # will start being marked is descendents before the loop. |
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635 if n in roots: |
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636 # If n was a root, check if it's a 'real' root. |
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637 p = tuple(self.parents(n)) |
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638 # If any of its parents are descendents, it's not a root. |
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639 if (p[0] in descendents) or (p[1] in descendents): |
|
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640 roots.pop(n) |
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641 else: |
|
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642 p = tuple(self.parents(n)) |
|
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643 # A node is a descendent if either of its parents are |
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644 # descendents. (We seeded the dependents list with the roots |
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645 # up there, remember?) |
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646 if (p[0] in descendents) or (p[1] in descendents): |
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647 descendents[n] = 1 |
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648 isdescendent = True |
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649 if isdescendent and ((ancestors is None) or (n in ancestors)): |
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650 # Only include nodes that are both descendents and ancestors. |
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651 orderedout.append(n) |
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652 if (ancestors is not None) and (n in heads): |
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653 # We're trying to figure out which heads are reachable |
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654 # from roots. |
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655 # Mark this head as having been reached |
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656 heads[n] = 1 |
|
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657 elif ancestors is None: |
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658 # Otherwise, we're trying to discover the heads. |
|
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659 # Assume this is a head because if it isn't, the next step |
|
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660 # will eventually remove it. |
|
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661 heads[n] = 1 |
|
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662 # But, obviously its parents aren't. |
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663 for p in self.parents(n): |
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664 heads.pop(p, None) |
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665 heads = [n for n in heads.iterkeys() if heads[n] != 0] |
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666 roots = roots.keys() |
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667 assert orderedout |
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668 assert roots |
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669 assert heads |
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670 return (orderedout, roots, heads) |
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671 |
|
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|
672 def heads(self, start=None): |
|
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673 """return the list of all nodes that have no children |
|
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674 |
|
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675 if start is specified, only heads that are descendants of |
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676 start will be returned |
|
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677 |
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|
678 """ |
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679 if start is None: |
|
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680 start = nullid |
|
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681 reachable = {start: 1} |
|
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682 heads = {start: 1} |
|
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683 startrev = self.rev(start) |
| 1083 | 684 |
|
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685 for r in xrange(startrev + 1, self.count()): |
| 221 | 686 n = self.node(r) |
| 687 for pn in self.parents(n): | |
|
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688 if pn in reachable: |
|
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689 reachable[n] = 1 |
|
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690 heads[n] = 1 |
|
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691 if pn in heads: |
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|
692 del heads[pn] |
|
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693 return heads.keys() |
| 370 | 694 |
| 695 def children(self, node): | |
| 1083 | 696 """find the children of a given node""" |
| 370 | 697 c = [] |
| 698 p = self.rev(node) | |
| 699 for r in range(p + 1, self.count()): | |
| 700 n = self.node(r) | |
| 701 for pn in self.parents(n): | |
|
854
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|
702 if pn == node: |
|
473c030d34a6
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|
703 c.append(n) |
| 370 | 704 continue |
| 705 elif pn == nullid: | |
| 706 continue | |
| 707 return c | |
| 515 | 708 |
|
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|
709 def lookup(self, id): |
| 1083 | 710 """locate a node based on revision number or subset of hex nodeid""" |
|
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|
711 try: |
|
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|
712 rev = int(id) |
| 469 | 713 if str(rev) != id: raise ValueError |
| 714 if rev < 0: rev = self.count() + rev | |
|
476
0a338d506268
Really _call_ method revlog.count in revlog.lookup()
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|
715 if rev < 0 or rev >= self.count(): raise ValueError |
|
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716 return self.node(rev) |
| 469 | 717 except (ValueError, OverflowError): |
|
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718 c = [] |
|
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719 for n in self.nodemap: |
| 469 | 720 if hex(n).startswith(id): |
|
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|
721 c.append(n) |
|
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
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|
722 if len(c) > 1: raise RevlogError(_("Ambiguous identifier")) |
|
9d2c2e6b32b5
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parents:
1400
diff
changeset
|
723 if len(c) < 1: raise RevlogError(_("No match found")) |
|
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parents:
26
diff
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|
724 return c[0] |
| 515 | 725 |
|
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|
726 return None |
|
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26
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|
727 |
|
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|
728 def diff(self, a, b): |
| 1083 | 729 """return a delta between two revisions""" |
|
0
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|
730 return mdiff.textdiff(a, b) |
|
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|
731 |
| 73 | 732 def patches(self, t, pl): |
| 1083 | 733 """apply a list of patches to a string""" |
| 73 | 734 return mdiff.patches(t, pl) |
| 735 | |
| 2072 | 736 def chunk(self, rev, df=None, cachelen=4096): |
|
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|
737 start, length = self.start(rev), self.length(rev) |
| 2073 | 738 inline = self.inlinedata() |
| 739 if inline: | |
| 740 start += (rev + 1) * struct.calcsize(self.indexformat) | |
|
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1559
diff
changeset
|
741 end = start + length |
| 2072 | 742 def loadcache(df): |
| 743 cache_length = max(cachelen, length) # 4k | |
| 744 if not df: | |
| 2073 | 745 if inline: |
| 746 df = self.opener(self.indexfile) | |
| 747 else: | |
| 748 df = self.opener(self.datafile) | |
|
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parents:
1559
diff
changeset
|
749 df.seek(start) |
|
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diff
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|
750 self.chunkcache = (start, df.read(cache_length)) |
|
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parents:
1559
diff
changeset
|
751 |
|
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parents:
1559
diff
changeset
|
752 if not self.chunkcache: |
| 2072 | 753 loadcache(df) |
|
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parents:
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diff
changeset
|
754 |
|
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parents:
1559
diff
changeset
|
755 cache_start = self.chunkcache[0] |
|
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1559
diff
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|
756 cache_end = cache_start + len(self.chunkcache[1]) |
|
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diff
changeset
|
757 if start >= cache_start and end <= cache_end: |
|
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parents:
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diff
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|
758 # it is cached |
|
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diff
changeset
|
759 offset = start - cache_start |
|
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1559
diff
changeset
|
760 else: |
| 2072 | 761 loadcache(df) |
|
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|
762 offset = 0 |
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|
763 |
|
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1559
diff
changeset
|
764 #def checkchunk(): |
|
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|
765 # df = self.opener(self.datafile) |
|
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|
766 # df.seek(start) |
|
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diff
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|
767 # return df.read(length) |
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|
768 #assert s == checkchunk() |
|
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diff
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|
769 return decompress(self.chunkcache[1][offset:offset + length]) |
|
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diff
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|
770 |
|
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|
771 def delta(self, node): |
| 1083 | 772 """return or calculate a delta between a node and its predecessor""" |
|
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|
773 r = self.rev(node) |
|
1941
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parents:
1853
diff
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|
774 return self.revdiff(r - 1, r) |
|
7518823709a2
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1853
diff
changeset
|
775 |
|
7518823709a2
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1853
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changeset
|
776 def revdiff(self, rev1, rev2): |
|
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|
777 """return or calculate a delta between two revisions""" |
|
7518823709a2
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parents:
1853
diff
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|
778 b1 = self.base(rev1) |
|
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|
779 b2 = self.base(rev2) |
|
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diff
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|
780 if b1 == b2 and rev1 + 1 == rev2: |
|
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|
781 return self.chunk(rev2) |
|
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|
782 else: |
|
1941
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|
783 return self.diff(self.revision(self.node(rev1)), |
|
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diff
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|
784 self.revision(self.node(rev2))) |
|
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|
785 |
|
0
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|
786 def revision(self, node): |
| 1083 | 787 """return an uncompressed revision of a given""" |
|
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diff
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|
788 if node == nullid: return "" |
|
0
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|
789 if self.cache and self.cache[0] == node: return self.cache[2] |
|
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|
790 |
| 1083 | 791 # look up what we need to read |
|
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|
792 text = None |
|
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|
793 rev = self.rev(node) |
|
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|
794 base = self.base(rev) |
|
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|
795 |
| 2073 | 796 if self.inlinedata(): |
| 797 # we probably have the whole chunk cached | |
| 798 df = None | |
| 799 else: | |
| 800 df = self.opener(self.datafile) | |
| 2072 | 801 |
| 1083 | 802 # do we have useful data cached? |
|
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|
803 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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|
804 base = self.cache[1] |
|
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|
805 text = self.cache[2] |
| 2079 | 806 self.loadindex(base, rev + 1) |
|
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parents:
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diff
changeset
|
807 else: |
| 2079 | 808 self.loadindex(base, rev + 1) |
| 2072 | 809 text = self.chunk(base, df=df) |
|
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changeset
|
810 |
|
71
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parents:
67
diff
changeset
|
811 bins = [] |
| 64 | 812 for r in xrange(base + 1, rev + 1): |
| 2072 | 813 bins.append(self.chunk(r, df=df)) |
|
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diff
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|
814 |
|
1941
7518823709a2
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parents:
1853
diff
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|
815 text = self.patches(text, bins) |
|
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Add mdiff.patches to speed up applying thousands of patches to the manifest
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parents:
67
diff
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|
816 |
|
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changeset
|
817 p1, p2 = self.parents(node) |
| 26 | 818 if node != hash(text, p1, p2): |
|
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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1400
diff
changeset
|
819 raise RevlogError(_("integrity check failed on %s:%d") |
| 98 | 820 % (self.datafile, rev)) |
|
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|
821 |
|
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|
822 self.cache = (node, rev, text) |
| 515 | 823 return text |
|
0
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|
824 |
|
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
825 def checkinlinesize(self, tr, fp=None): |
| 2073 | 826 if not self.inlinedata(): |
| 827 return | |
|
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343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
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|
828 if not fp: |
|
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mason@suse.com
parents:
2073
diff
changeset
|
829 fp = self.opener(self.indexfile, 'r') |
|
2082
856f0ba200bc
Additional appendfile fixes for interleaved data/index files
mason@suse.com
parents:
2081
diff
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|
830 fp.seek(0, 2) |
| 2073 | 831 size = fp.tell() |
| 832 if size < 131072: | |
| 833 return | |
| 2084 | 834 trinfo = tr.find(self.indexfile) |
| 835 if trinfo == None: | |
| 836 raise RevlogError(_("%s not found in the transaction" % | |
| 837 self.indexfile)) | |
| 838 | |
| 839 trindex = trinfo[2] | |
| 840 dataoff = self.start(trindex) | |
| 841 | |
| 842 tr.add(self.datafile, dataoff) | |
| 2073 | 843 df = self.opener(self.datafile, 'w') |
| 844 calc = struct.calcsize(self.indexformat) | |
| 845 for r in xrange(self.count()): | |
| 846 start = self.start(r) + (r + 1) * calc | |
| 847 length = self.length(r) | |
| 848 fp.seek(start) | |
| 849 d = fp.read(length) | |
| 850 df.write(d) | |
| 851 fp.close() | |
| 852 df.close() | |
|
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Create an atomic opener that does not automatically rename on close
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parents:
2075
diff
changeset
|
853 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
| 2073 | 854 self.version &= ~(REVLOGNGINLINEDATA) |
| 855 if self.count(): | |
| 856 x = self.index[0] | |
| 857 e = struct.pack(self.indexformat, *x)[4:] | |
| 858 l = struct.pack(versionformat, self.version) | |
| 859 fp.write(l) | |
| 860 fp.write(e) | |
| 861 | |
| 862 for i in xrange(1, self.count()): | |
| 863 x = self.index[i] | |
| 864 e = struct.pack(self.indexformat, *x) | |
| 865 fp.write(e) | |
| 866 | |
|
2076
d007df6daf8e
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2075
diff
changeset
|
867 # if we don't call rename, the temp file will never replace the |
|
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parents:
2075
diff
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|
868 # real index |
|
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mason@suse.com
parents:
2075
diff
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|
869 fp.rename() |
| 2084 | 870 |
| 871 tr.replace(self.indexfile, trindex * calc) | |
| 2073 | 872 self.chunkcache = None |
| 873 | |
| 644 | 874 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
| 1083 | 875 """add a revision to the log |
| 876 | |
| 877 text - the revision data to add | |
| 878 transaction - the transaction object used for rollback | |
| 879 link - the linkrev data to add | |
| 880 p1, p2 - the parent nodeids of the revision | |
| 881 d - an optional precomputed delta | |
| 882 """ | |
|
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883 if text is None: text = "" |
|
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884 if p1 is None: p1 = self.tip() |
|
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|
885 if p2 is None: p2 = nullid |
|
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|
886 |
|
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887 node = hash(text, p1, p2) |
|
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|
888 |
| 301 | 889 if node in self.nodemap: |
| 890 return node | |
| 891 | |
|
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|
892 n = self.count() |
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|
893 t = n - 1 |
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|
894 |
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|
895 if n: |
| 64 | 896 base = self.base(t) |
| 897 start = self.start(base) | |
|
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898 end = self.end(t) |
| 644 | 899 if not d: |
| 900 prev = self.revision(self.tip()) | |
|
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mason@suse.com
parents:
1509
diff
changeset
|
901 d = self.diff(prev, str(text)) |
| 98 | 902 data = compress(d) |
|
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Reduce string duplication in compression code
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|
903 l = len(data[1]) + len(data[0]) |
|
3d11f81c9145
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|
904 dist = end - start + l |
|
0
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|
905 |
|
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|
906 # full versions are inserted when the needed deltas |
|
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|
907 # become comparable to the uncompressed text |
| 64 | 908 if not n or dist > len(text) * 2: |
|
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diff
changeset
|
909 data = compress(text) |
|
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parents:
1509
diff
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|
910 l = len(data[1]) + len(data[0]) |
|
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911 base = n |
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912 else: |
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changeset
|
913 base = self.base(t) |
|
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
914 |
|
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
915 offset = 0 |
|
9117c6561b0b
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mpm@selenic.com
parents:
diff
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|
916 if t >= 0: |
|
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
917 offset = self.end(t) |
|
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
918 |
|
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
919 if self.version == REVLOGV0: |
| 2072 | 920 e = (offset, l, base, link, p1, p2, node) |
| 921 else: | |
| 922 e = (self.offset_type(offset, 0), l, len(text), | |
| 923 base, link, self.rev(p1), self.rev(p2), node) | |
| 515 | 924 |
|
0
9117c6561b0b
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mpm@selenic.com
parents:
diff
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|
925 self.index.append(e) |
|
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parents:
diff
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|
926 self.nodemap[node] = n |
| 2072 | 927 entry = struct.pack(self.indexformat, *e) |
|
0
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
928 |
| 2073 | 929 if not self.inlinedata(): |
| 930 transaction.add(self.datafile, offset) | |
| 931 transaction.add(self.indexfile, n * len(entry)) | |
| 932 f = self.opener(self.datafile, "a") | |
| 933 if data[0]: | |
| 934 f.write(data[0]) | |
| 935 f.write(data[1]) | |
|
2089
cb99c711c59f
make appendfile simpler so it does not break with revlogng on windows.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2084
diff
changeset
|
936 f.close() |
| 2073 | 937 f = self.opener(self.indexfile, "a") |
| 938 else: | |
| 939 f = self.opener(self.indexfile, "a+") | |
|
2077
4d0700ae0991
Fix inlined revlogs to seek to eof after opening "a+"
mason@suse.com
parents:
2076
diff
changeset
|
940 f.seek(0, 2) |
| 2084 | 941 transaction.add(self.indexfile, f.tell(), self.count() - 1) |
| 2072 | 942 |
|
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
943 if len(self.index) == 1 and self.version != REVLOGV0: |
| 2072 | 944 l = struct.pack(versionformat, self.version) |
| 945 f.write(l) | |
| 946 entry = entry[4:] | |
| 947 | |
| 948 f.write(entry) | |
|
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
949 |
| 2073 | 950 if self.inlinedata(): |
| 951 f.write(data[0]) | |
| 952 f.write(data[1]) | |
|
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
953 self.checkinlinesize(transaction, f) |
| 2073 | 954 |
|
0
9117c6561b0b
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mpm@selenic.com
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changeset
|
955 self.cache = (node, n, text) |
|
9117c6561b0b
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parents:
diff
changeset
|
956 return node |
|
9117c6561b0b
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parents:
diff
changeset
|
957 |
|
9117c6561b0b
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mpm@selenic.com
parents:
diff
changeset
|
958 def ancestor(self, a, b): |
| 1083 | 959 """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
|
960 |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
961 # 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
|
962 if a == b: |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
963 return a |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
964 ra = self.rev(a) |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
965 rb = self.rev(b) |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
966 if ra < rb: |
|
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
967 last = b |
|
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
968 first = a |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
969 else: |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
970 last = a |
|
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
971 first = b |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
972 |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
973 # 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
|
974 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
|
975 if first in reachable: |
|
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
976 return first |
|
416d8b2a75b8
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Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
977 |
| 147 | 978 # calculate the distance of every node from root |
| 979 dist = {nullid: 0} | |
| 980 for i in xrange(self.count()): | |
| 981 n = self.node(i) | |
| 982 p1, p2 = self.parents(n) | |
| 983 dist[n] = max(dist[p1], dist[p2]) + 1 | |
| 515 | 984 |
| 147 | 985 # traverse ancestors in order of decreasing distance from root |
| 986 def ancestors(node): | |
| 987 # we store negative distances because heap returns smallest member | |
| 988 h = [(-dist[node], node)] | |
| 989 seen = {} | |
| 990 while h: | |
| 991 d, n = heapq.heappop(h) | |
| 992 if n not in seen: | |
| 993 seen[n] = 1 | |
|
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
994 yield (-d, n) |
| 147 | 995 for p in self.parents(n): |
| 996 heapq.heappush(h, (-dist[p], p)) | |
|
45
f2b2d5daec30
Fix recursion depth trouble with ancestor algorithm
mpm@selenic.com
parents:
41
diff
changeset
|
997 |
|
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
998 def generations(node): |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
999 sg, s = None, {} |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1000 for g,n in ancestors(node): |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1001 if g != sg: |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1002 if sg: |
|
0e2be889ccd7
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Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1003 yield sg, s |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1004 sg, s = g, {n:1} |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1005 else: |
|
0e2be889ccd7
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Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1006 s[n] = 1 |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1007 yield sg, s |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1008 |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1009 x = generations(a) |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1010 y = generations(b) |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1011 gx = x.next() |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1012 gy = y.next() |
|
45
f2b2d5daec30
Fix recursion depth trouble with ancestor algorithm
mpm@selenic.com
parents:
41
diff
changeset
|
1013 |
| 147 | 1014 # increment each ancestor list until it is closer to root than |
| 1015 # the other, or they match | |
| 1016 while 1: | |
|
1351
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1017 #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
|
1018 if gx[0] == gy[0]: |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1019 # find the intersection |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1020 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
|
1021 if i: |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1022 return i[0] |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1023 else: |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1024 #print "next" |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1025 gy = y.next() |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1026 gx = x.next() |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1027 elif gx[0] < gy[0]: |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1028 #print "next y" |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1029 gy = y.next() |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1030 else: |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1031 #print "next x" |
|
0e2be889ccd7
Repair ancestor logic, fix up test cases
Matt Mackall <mpm@selenic.com>
parents:
1325
diff
changeset
|
1032 gx = x.next() |
|
0
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Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1033 |
|
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1034 def group(self, nodelist, lookup, infocollect=None): |
| 1083 | 1035 """calculate a delta group |
| 46 | 1036 |
| 1083 | 1037 Given a list of changeset revs, return a set of deltas and |
| 1038 metadata corresponding to nodes. the first delta is | |
| 1039 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
| 1040 have this parent as it has all history before these | |
| 1041 changesets. parent is parent[0] | |
| 1042 """ | |
|
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1043 revs = [self.rev(n) for n in nodelist] |
| 46 | 1044 |
| 1045 # if we don't have any revisions touched by these changesets, bail | |
| 192 | 1046 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
|
1047 yield changegroup.closechunk() |
| 192 | 1048 return |
| 46 | 1049 |
| 1050 # add the parent of the first rev | |
| 1051 p = self.parents(self.node(revs[0]))[0] | |
| 1052 revs.insert(0, self.rev(p)) | |
| 1053 | |
| 1054 # build deltas | |
|
71
47c9a869adee
Add mdiff.patches to speed up applying thousands of patches to the manifest
mpm@selenic.com
parents:
67
diff
changeset
|
1055 for d in xrange(0, len(revs) - 1): |
| 46 | 1056 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
|
1057 nb = self.node(b) |
| 192 | 1058 |
|
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1059 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
|
1060 infocollect(nb) |
|
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1061 |
|
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
1062 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
|
1063 p = self.parents(nb) |
|
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1064 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
|
1065 yield changegroup.genchunk("%s%s" % (meta, d)) |
| 46 | 1066 |
|
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1067 yield changegroup.closechunk() |
| 192 | 1068 |
| 1062 | 1069 def addgroup(self, revs, linkmapper, transaction, unique=0): |
| 1083 | 1070 """ |
| 1071 add a delta group | |
| 46 | 1072 |
| 1083 | 1073 given a set of deltas, add them to the revision log. the |
| 1074 first delta is against its parent, which should be in our | |
| 1075 log, the rest are against the previous delta. | |
| 1076 """ | |
| 1077 | |
| 1078 #track the base of the current delta log | |
| 46 | 1079 r = self.count() |
| 1080 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
|
1081 node = None |
| 515 | 1082 |
| 655 | 1083 base = prev = -1 |
|
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1084 start = end = textlen = 0 |
| 46 | 1085 if r: |
| 1086 end = self.end(t) | |
| 1087 | |
| 2072 | 1088 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
|
1089 ifh.seek(0, 2) |
| 2084 | 1090 transaction.add(self.indexfile, ifh.tell(), self.count()) |
| 2073 | 1091 if self.inlinedata(): |
| 1092 dfh = None | |
| 1093 else: | |
| 1094 transaction.add(self.datafile, end) | |
| 1095 dfh = self.opener(self.datafile, "a") | |
| 46 | 1096 |
| 1097 # loop through our set of deltas | |
| 192 | 1098 chain = None |
| 1099 for chunk in revs: | |
| 1100 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
| 94 | 1101 link = linkmapper(cs) |
| 77 | 1102 if node in self.nodemap: |
|
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1103 # 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
|
1104 # 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
|
1105 # 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
|
1106 chain = node |
|
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1107 continue |
| 192 | 1108 delta = chunk[80:] |
| 1109 | |
|
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1110 for p in (p1, p2): |
|
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1111 if not p in self.nodemap: |
|
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1112 raise RevlogError(_("unknown parent %s") % short(p1)) |
|
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1113 |
| 192 | 1114 if not chain: |
| 1115 # retrieve the parent revision of the delta chain | |
| 1116 chain = p1 | |
| 1117 if not chain in self.nodemap: | |
|
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1118 raise RevlogError(_("unknown base %s") % short(chain[:4])) |
| 46 | 1119 |
| 1120 # full versions are inserted when the needed deltas become | |
| 1121 # comparable to the uncompressed text or when the previous | |
| 1122 # version is not the one we have a delta against. We use | |
| 1123 # the size of the previous full rev as a proxy for the | |
| 1124 # current size. | |
| 1125 | |
| 1126 if chain == prev: | |
|
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3d11f81c9145
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1127 tempd = compress(delta) |
|
3d11f81c9145
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1128 cdelta = tempd[0] + tempd[1] |
|
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1129 textlen = mdiff.patchedsize(textlen, delta) |
| 46 | 1130 |
|
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mason@suse.com
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|
1131 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
| 46 | 1132 # flush our writes here so we can read it in revision |
| 2072 | 1133 if dfh: |
| 1134 dfh.flush() | |
| 46 | 1135 ifh.flush() |
|
65
d40cc5aacc31
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|
1136 text = self.revision(chain) |
| 73 | 1137 text = self.patches(text, [delta]) |
| 46 | 1138 chk = self.addrevision(text, transaction, link, p1, p2) |
| 1139 if chk != node: | |
|
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1140 raise RevlogError(_("consistency error adding group")) |
|
2078
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|
1141 textlen = len(text) |
| 46 | 1142 else: |
|
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
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|
1143 if self.version == REVLOGV0: |
| 2072 | 1144 e = (end, len(cdelta), base, link, p1, p2, node) |
| 1145 else: | |
|
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|
1146 e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
| 2072 | 1147 link, self.rev(p1), self.rev(p2), node) |
| 46 | 1148 self.index.append(e) |
| 1149 self.nodemap[node] = r | |
| 2073 | 1150 if self.inlinedata(): |
| 1151 ifh.write(struct.pack(self.indexformat, *e)) | |
| 1152 ifh.write(cdelta) | |
|
2075
343aeefb553b
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mason@suse.com
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|
1153 self.checkinlinesize(transaction, ifh) |
| 2073 | 1154 if not self.inlinedata(): |
| 1155 dfh = self.opener(self.datafile, "a") | |
| 1156 ifh = self.opener(self.indexfile, "a") | |
| 1157 else: | |
| 1158 if not dfh: | |
| 1159 # addrevision switched from inline to conventional | |
| 1160 # reopen the index | |
| 1161 dfh = self.opener(self.datafile, "a") | |
| 1162 ifh = self.opener(self.indexfile, "a") | |
| 1163 dfh.write(cdelta) | |
| 1164 ifh.write(struct.pack(self.indexformat, *e)) | |
| 46 | 1165 |
|
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|
1166 t, r, chain, prev = r, r + 1, node, node |
|
1749
d457fec76ab0
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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|
1167 base = self.base(t) |
|
d457fec76ab0
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|
1168 start = self.start(base) |
| 46 | 1169 end = self.end(t) |
| 1170 | |
|
2002
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
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|
1171 if node is None: |
|
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
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diff
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|
1172 raise RevlogError(_("group to be added is empty")) |
| 46 | 1173 return node |
|
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1174 |
|
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|
1175 def strip(self, rev, minlink): |
|
7ae0ce7a3dc4
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|
1176 if self.count() == 0 or rev >= self.count(): |
|
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|
1177 return |
|
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|
1178 |
| 2072 | 1179 if isinstance(self.index, lazyindex): |
| 1180 self.loadindexmap() | |
| 1181 | |
|
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|
1182 # When stripping away a revision, we need to make sure it |
|
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|
1183 # does not actually belong to an older changeset. |
|
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|
1184 # The minlink parameter defines the oldest revision |
|
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|
1185 # we're allowed to strip away. |
| 2072 | 1186 while minlink > self.index[rev][-4]: |
|
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|
1187 rev += 1 |
|
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|
1188 if rev >= self.count(): |
|
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|
1189 return |
|
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|
1190 |
|
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|
1191 # first truncate the files on disk |
|
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|
1192 end = self.start(rev) |
| 2073 | 1193 if not self.inlinedata(): |
| 1194 df = self.opener(self.datafile, "a") | |
| 1195 df.truncate(end) | |
| 1196 end = rev * struct.calcsize(self.indexformat) | |
| 1197 else: | |
| 1198 end += rev * struct.calcsize(self.indexformat) | |
| 2072 | 1199 |
| 1200 indexf = self.opener(self.indexfile, "a") | |
| 1201 indexf.truncate(end) | |
|
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|
1202 |
|
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1203 # then reset internal state in memory to forget those revisions |
|
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|
1204 self.cache = None |
| 1711 | 1205 self.chunkcache = None |
| 2072 | 1206 for x in xrange(rev, self.count()): |
| 1207 del self.nodemap[self.node(x)] | |
|
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|
1208 |
| 2072 | 1209 del self.index[rev:] |
|
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|
1210 |
|
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|
1211 def checksize(self): |
|
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1212 expected = 0 |
|
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1213 if self.count(): |
|
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|
1214 expected = self.end(self.count() - 1) |
|
1667
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|
1215 |
|
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|
1216 try: |
|
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|
1217 f = self.opener(self.datafile) |
|
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1218 f.seek(0, 2) |
|
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1219 actual = f.tell() |
|
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1220 dd = actual - expected |
|
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|
1221 except IOError, inst: |
|
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|
1222 if inst.errno != errno.ENOENT: |
|
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|
1223 raise |
|
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|
1224 dd = 0 |
|
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|
1225 |
|
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|
1226 try: |
|
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|
1227 f = self.opener(self.indexfile) |
|
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|
1228 f.seek(0, 2) |
|
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|
1229 actual = f.tell() |
| 2072 | 1230 s = struct.calcsize(self.indexformat) |
|
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|
1231 i = actual / s |
|
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|
1232 di = actual - (i * s) |
| 2073 | 1233 if self.inlinedata(): |
| 1234 databytes = 0 | |
| 1235 for r in xrange(self.count()): | |
| 1236 databytes += self.length(r) | |
| 1237 dd = 0 | |
| 1238 di = actual - self.count() * s - databytes | |
|
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|
1239 except IOError, inst: |
|
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|
1240 if inst.errno != errno.ENOENT: |
|
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|
1241 raise |
|
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diff
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|
1242 di = 0 |
|
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diff
changeset
|
1243 |
|
daff3ef0de8d
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diff
changeset
|
1244 return (dd, di) |
|
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|
1245 |
|
249ca10d37f4
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diff
changeset
|
1246 |