Mercurial > hg
annotate mercurial/revlog.py @ 4739:1da35d1e7ef9
Added full URL to debug output if something doesn't look like an http hg repo.
This way it is easier to debug problems with failing subcommands, like
changegroupsubset due to permission problems, when generally accessing
the repository works fine.
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Fri, 29 Jun 2007 11:13:36 +0200 |
parents | 63b9d2deed48 |
children | 62c56d8f368b |
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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 | |
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7 Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
1083 | 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 * |
3891 | 14 from i18n import _ |
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15 import binascii, changegroup, errno, ancestor, mdiff, os |
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16 import sha, struct, util, zlib |
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17 |
2072 | 18 # revlog version strings |
19 REVLOGV0 = 0 | |
20 REVLOGNG = 1 | |
21 | |
2073 | 22 # revlog flags |
23 REVLOGNGINLINEDATA = (1 << 16) | |
2222
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24 REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA |
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25 |
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26 REVLOG_DEFAULT_FORMAT = REVLOGNG |
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27 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
2073 | 28 |
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29 def hash(text, p1, p2): |
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30 """generate a hash from the given text and its parent hashes |
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31 |
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32 This hash combines both the current file contents and its history |
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33 in a manner that makes it easy to distinguish nodes with the same |
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34 content in the revision graph. |
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35 """ |
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36 l = [p1, p2] |
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37 l.sort() |
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38 s = sha.new(l[0]) |
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39 s.update(l[1]) |
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40 s.update(text) |
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41 return s.digest() |
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42 |
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43 def compress(text): |
1083 | 44 """ generate a possibly-compressed representation of text """ |
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45 if not text: return ("", text) |
112 | 46 if len(text) < 44: |
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47 if text[0] == '\0': return ("", text) |
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48 return ('u', text) |
112 | 49 bin = zlib.compress(text) |
50 if len(bin) > len(text): | |
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51 if text[0] == '\0': return ("", text) |
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52 return ('u', text) |
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53 return ("", bin) |
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54 |
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55 def decompress(bin): |
1083 | 56 """ decompress the given input """ |
112 | 57 if not bin: return bin |
58 t = bin[0] | |
59 if t == '\0': return bin | |
60 if t == 'x': return zlib.decompress(bin) | |
61 if t == 'u': return bin[1:] | |
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62 raise RevlogError(_("unknown compression type %r") % t) |
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63 |
2072 | 64 indexformatv0 = ">4l20s20s20s" |
2079 | 65 v0shaoffset = 56 |
2072 | 66 # index ng: |
67 # 6 bytes offset | |
68 # 2 bytes flags | |
69 # 4 bytes compressed length | |
70 # 4 bytes uncompressed length | |
71 # 4 bytes: base rev | |
72 # 4 bytes link rev | |
73 # 4 bytes parent 1 rev | |
74 # 4 bytes parent 2 rev | |
75 # 32 bytes: nodeid | |
76 indexformatng = ">Qiiiiii20s12x" | |
2079 | 77 ngshaoffset = 32 |
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78 versionformat = ">I" |
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79 |
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80 class lazyparser(object): |
1083 | 81 """ |
82 this class avoids the need to parse the entirety of large indices | |
83 """ | |
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84 |
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85 # lazyparser is not safe to use on windows if win32 extensions not |
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86 # available. it keeps file handle open, which make it not possible |
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87 # to break hardlinks on local cloned repos. |
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88 safe_to_use = os.name != 'nt' or (not util.is_win_9x() and |
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89 hasattr(util, 'win32api')) |
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90 |
2079 | 91 def __init__(self, dataf, size, indexformat, shaoffset): |
92 self.dataf = dataf | |
93 self.format = indexformat | |
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94 self.s = struct.calcsize(indexformat) |
2072 | 95 self.indexformat = indexformat |
2079 | 96 self.datasize = size |
97 self.l = size/self.s | |
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98 self.index = [None] * self.l |
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99 self.map = {nullid: nullrev} |
2079 | 100 self.allmap = 0 |
323 | 101 self.all = 0 |
2079 | 102 self.mapfind_count = 0 |
103 self.shaoffset = shaoffset | |
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104 |
2079 | 105 def loadmap(self): |
106 """ | |
107 during a commit, we need to make sure the rev being added is | |
108 not a duplicate. This requires loading the entire index, | |
109 which is fairly slow. loadmap can load up just the node map, | |
110 which takes much less time. | |
111 """ | |
112 if self.allmap: return | |
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) | |
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135 if blockstart + blocksize > self.datasize: |
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136 # the revlog may have grown since we've started running, |
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137 # but we don't have space in self.index for more entries. |
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138 # limit blocksize so that we don't get too much data. |
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139 blocksize = max(self.datasize - blockstart, 0) |
2079 | 140 data = self.dataf.read(blocksize) |
141 lend = len(data) / self.s | |
142 i = blockstart / self.s | |
143 off = 0 | |
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144 # lazyindex supports __delitem__ |
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145 if lend > len(self.index) - i: |
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146 lend = len(self.index) - i |
2079 | 147 for x in xrange(lend): |
148 if self.index[i + x] == None: | |
149 b = data[off : off + self.s] | |
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150 self.index[i + x] = b |
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151 n = b[self.shaoffset:self.shaoffset + 20] |
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152 self.map[n] = i + x |
2079 | 153 off += self.s |
154 | |
155 def findnode(self, node): | |
156 """search backwards through the index file for a specific node""" | |
157 if self.allmap: return None | |
158 | |
159 # hg log will cause many many searches for the manifest | |
160 # nodes. After we get called a few times, just load the whole | |
161 # thing. | |
162 if self.mapfind_count > 8: | |
163 self.loadmap() | |
164 if node in self.map: | |
165 return node | |
166 return None | |
167 self.mapfind_count += 1 | |
168 last = self.l - 1 | |
169 while self.index[last] != None: | |
170 if last == 0: | |
171 self.all = 1 | |
172 self.allmap = 1 | |
173 return None | |
174 last -= 1 | |
175 end = (last + 1) * self.s | |
176 blocksize = self.s * 256 | |
177 while end >= 0: | |
178 start = max(end - blocksize, 0) | |
179 self.dataf.seek(start) | |
180 data = self.dataf.read(end - start) | |
181 findend = end - start | |
182 while True: | |
183 # we're searching backwards, so weh have to make sure | |
184 # we don't find a changeset where this node is a parent | |
185 off = data.rfind(node, 0, findend) | |
186 findend = off | |
187 if off >= 0: | |
188 i = off / self.s | |
189 off = i * self.s | |
190 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
191 if n == node: | |
192 self.map[n] = i + start / self.s | |
193 return node | |
194 else: | |
195 break | |
196 end -= blocksize | |
197 return None | |
198 | |
199 def loadindex(self, i=None, end=None): | |
200 if self.all: return | |
201 all = False | |
202 if i == None: | |
203 blockstart = 0 | |
204 blocksize = (512 / self.s) * self.s | |
205 end = self.datasize | |
206 all = True | |
323 | 207 else: |
2079 | 208 if end: |
209 blockstart = i * self.s | |
210 end = end * self.s | |
211 blocksize = end - blockstart | |
212 else: | |
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213 blockstart = (i & ~63) * self.s |
2079 | 214 blocksize = self.s * 64 |
215 end = blockstart + blocksize | |
216 while blockstart < end: | |
217 self.loadblock(blockstart, blocksize) | |
218 blockstart += blocksize | |
219 if all: self.all = True | |
515 | 220 |
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221 class lazyindex(object): |
1083 | 222 """a lazy version of the index array""" |
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223 def __init__(self, parser): |
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224 self.p = parser |
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225 def __len__(self): |
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226 return len(self.p.index) |
115 | 227 def load(self, pos): |
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228 if pos < 0: |
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229 pos += len(self.p.index) |
2079 | 230 self.p.loadindex(pos) |
115 | 231 return self.p.index[pos] |
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232 def __getitem__(self, pos): |
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233 ret = self.p.index[pos] or self.load(pos) |
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234 if isinstance(ret, str): |
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235 ret = struct.unpack(self.p.indexformat, ret) |
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236 return ret |
2072 | 237 def __setitem__(self, pos, item): |
238 self.p.index[pos] = item | |
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239 def __delitem__(self, pos): |
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240 del self.p.index[pos] |
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241 def append(self, e): |
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242 self.p.index.append(e) |
515 | 243 |
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244 class lazymap(object): |
1083 | 245 """a lazy version of the node map""" |
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246 def __init__(self, parser): |
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247 self.p = parser |
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248 def load(self, key): |
2079 | 249 n = self.p.findnode(key) |
250 if n == None: | |
1214 | 251 raise KeyError(key) |
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252 def __contains__(self, key): |
2079 | 253 if key in self.p.map: |
254 return True | |
255 self.p.loadmap() | |
323 | 256 return key in self.p.map |
97 | 257 def __iter__(self): |
469 | 258 yield nullid |
97 | 259 for i in xrange(self.p.l): |
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260 ret = self.p.index[i] |
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261 if not ret: |
2079 | 262 self.p.loadindex(i) |
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263 ret = self.p.index[i] |
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264 if isinstance(ret, str): |
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265 ret = struct.unpack(self.p.indexformat, ret) |
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266 yield ret[-1] |
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267 def __getitem__(self, key): |
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268 try: |
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269 return self.p.map[key] |
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270 except KeyError: |
86
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271 try: |
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272 self.load(key) |
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273 return self.p.map[key] |
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274 except KeyError: |
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275 raise KeyError("node " + hex(key)) |
76
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276 def __setitem__(self, key, val): |
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277 self.p.map[key] = val |
1535
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278 def __delitem__(self, key): |
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279 del self.p.map[key] |
76
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280 |
1073
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281 class RevlogError(Exception): pass |
3930
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282 class LookupError(RevlogError): pass |
1073
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283 |
1559
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284 class revlog(object): |
1083 | 285 """ |
286 the underlying revision storage object | |
287 | |
288 A revlog consists of two parts, an index and the revision data. | |
289 | |
290 The index is a file with a fixed record size containing | |
291 information on each revision, includings its nodeid (hash), the | |
292 nodeids of its parents, the position and offset of its data within | |
293 the data file, and the revision it's based on. Finally, each entry | |
294 contains a linkrev entry that can serve as a pointer to external | |
295 data. | |
296 | |
297 The revision data itself is a linear collection of data chunks. | |
298 Each chunk represents a revision and is usually represented as a | |
299 delta against the previous chunk. To bound lookup time, runs of | |
300 deltas are limited to about 2 times the length of the original | |
301 version data. This makes retrieval of a version proportional to | |
302 its size, or O(1) relative to the number of revisions. | |
303 | |
304 Both pieces of the revlog are written to in an append-only | |
305 fashion, which means we never need to rewrite a file to insert or | |
306 remove data, and can use some simple techniques to avoid the need | |
307 for locking while reading. | |
308 """ | |
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309 def __init__(self, opener, indexfile): |
1083 | 310 """ |
311 create a revlog object | |
312 | |
313 opener is a function that abstracts the file opening operation | |
314 and can be used to implement COW semantics or the like. | |
315 """ | |
0
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316 self.indexfile = indexfile |
4257
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317 self.datafile = indexfile[:-2] + ".d" |
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318 self.opener = opener |
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319 |
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320 self.indexstat = None |
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321 self.cache = None |
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322 self.chunkcache = None |
4277
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323 self.defversion = REVLOG_DEFAULT_VERSION |
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324 if hasattr(opener, "defversion"): |
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325 self.defversion = opener.defversion |
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326 if self.defversion & REVLOGNG: |
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327 self.defversion |= REVLOGNGINLINEDATA |
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328 self.load() |
116
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329 |
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330 def load(self): |
2072 | 331 v = self.defversion |
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332 try: |
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333 f = self.opener(self.indexfile) |
2079 | 334 i = f.read(4) |
335 f.seek(0) | |
1322
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336 except IOError, inst: |
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337 if inst.errno != errno.ENOENT: |
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338 raise |
76
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339 i = "" |
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340 else: |
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341 try: |
2176
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342 st = util.fstat(f) |
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343 except AttributeError, inst: |
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344 st = None |
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345 else: |
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346 oldst = self.indexstat |
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347 if (oldst and st.st_dev == oldst.st_dev |
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348 and st.st_ino == oldst.st_ino |
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349 and st.st_mtime == oldst.st_mtime |
4483
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350 and st.st_ctime == oldst.st_ctime |
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351 and st.st_size == oldst.st_size): |
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352 return |
2072 | 353 self.indexstat = st |
2138
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Fix revlog-ng interaction with old-http.
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354 if len(i) > 0: |
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355 v = struct.unpack(versionformat, i)[0] |
2073 | 356 flags = v & ~0xFFFF |
357 fmt = v & 0xFFFF | |
2142
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358 if fmt == REVLOGV0: |
2073 | 359 if flags: |
3754
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360 raise RevlogError(_("index %s unknown flags %#04x for format v0") |
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361 % (self.indexfile, flags >> 16)) |
2073 | 362 elif fmt == REVLOGNG: |
363 if flags & ~REVLOGNGINLINEDATA: | |
3754
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364 raise RevlogError(_("index %s unknown flags %#04x for revlogng") |
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|
365 % (self.indexfile, flags >> 16)) |
2073 | 366 else: |
3743
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Make revlog error slightly less scary
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|
367 raise RevlogError(_("index %s unknown format %d") |
3680
69cf255a55a1
Indentation cleanups for 2956948b81f3.
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368 % (self.indexfile, fmt)) |
2072 | 369 self.version = v |
2142
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370 if v == REVLOGV0: |
2072 | 371 self.indexformat = indexformatv0 |
2079 | 372 shaoffset = v0shaoffset |
2072 | 373 else: |
374 self.indexformat = indexformatng | |
2079 | 375 shaoffset = ngshaoffset |
116
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376 |
2072 | 377 if i: |
2250
45aef5ddcdbe
windows: revlog.lazyparser not always safe to use.
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changeset
|
378 if (lazyparser.safe_to_use and not self.inlinedata() and |
45aef5ddcdbe
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diff
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|
379 st and st.st_size > 10000): |
2072 | 380 # big index, let's parse it on demand |
2079 | 381 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset) |
2072 | 382 self.index = lazyindex(parser) |
383 self.nodemap = lazymap(parser) | |
384 else: | |
2255
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385 self.parseindex(f, st) |
2142
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|
386 if self.version != REVLOGV0: |
2072 | 387 e = list(self.index[0]) |
388 type = self.ngtype(e[0]) | |
389 e[0] = self.offset_type(0, type) | |
390 self.index[0] = e | |
116
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diff
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391 else: |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
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|
392 self.nodemap = {nullid: nullrev} |
2072 | 393 self.index = [] |
394 | |
395 | |
2255
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396 def parseindex(self, fp, st): |
2072 | 397 s = struct.calcsize(self.indexformat) |
398 self.index = [] | |
3578
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399 self.nodemap = {nullid: nullrev} |
2073 | 400 inline = self.inlinedata() |
2072 | 401 n = 0 |
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402 leftover = None |
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403 while True: |
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404 if st: |
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405 data = fp.read(65536) |
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406 else: |
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407 # hack for httprangereader, it doesn't do partial reads well |
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408 data = fp.read() |
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409 if not data: |
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|
410 break |
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411 if n == 0 and self.inlinedata(): |
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412 # cache the first chunk |
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413 self.chunkcache = (0, data) |
2289
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|
414 if leftover: |
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|
415 data = leftover + data |
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416 leftover = None |
2255
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417 off = 0 |
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418 l = len(data) |
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419 while off < l: |
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420 if l - off < s: |
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421 leftover = data[off:] |
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422 break |
2289
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423 cur = data[off:off + s] |
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|
424 off += s |
2255
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425 e = struct.unpack(self.indexformat, cur) |
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426 self.index.append(e) |
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427 self.nodemap[e[-1]] = n |
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428 n += 1 |
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changeset
|
429 if inline: |
4215
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|
430 if e[1] < 0: |
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431 break |
2255
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432 off += e[1] |
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433 if off > l: |
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|
434 # some things don't seek well, just read it |
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435 fp.read(off - l) |
4215
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revlog: attempt to gracefully handle some interleaved damage
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parents:
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diff
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|
436 break |
2255
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parents:
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|
437 if not st: |
3f38e872f39a
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parents:
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diff
changeset
|
438 break |
2600
c4325f0a9b91
clean up trailing white space.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2561
diff
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|
439 |
116
e484cd5ec282
Only use lazy indexing for big indices and avoid the overhead of the
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parents:
115
diff
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|
440 |
2072 | 441 def ngoffset(self, q): |
442 if q & 0xFFFF: | |
443 raise RevlogError(_('%s: incompatible revision flag %x') % | |
2141
ed631e83fa06
Corrected error message for incompatible revision flags.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2138
diff
changeset
|
444 (self.indexfile, q)) |
2072 | 445 return long(q >> 16) |
446 | |
447 def ngtype(self, q): | |
448 return int(q & 0xFFFF) | |
116
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parents:
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diff
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|
449 |
2072 | 450 def offset_type(self, offset, type): |
451 return long(long(offset) << 16 | type) | |
452 | |
2079 | 453 def loadindex(self, start, end): |
454 """load a block of indexes all at once from the lazy parser""" | |
455 if isinstance(self.index, lazyindex): | |
456 self.index.p.loadindex(start, end) | |
457 | |
2072 | 458 def loadindexmap(self): |
459 """loads both the map and the index from the lazy parser""" | |
460 if isinstance(self.index, lazyindex): | |
461 p = self.index.p | |
2079 | 462 p.loadindex() |
463 self.nodemap = p.map | |
464 | |
465 def loadmap(self): | |
466 """loads the map from the lazy parser""" | |
467 if isinstance(self.nodemap, lazymap): | |
468 self.nodemap.p.loadmap() | |
469 self.nodemap = self.nodemap.p.map | |
0
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470 |
2073 | 471 def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
0
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472 def tip(self): return self.node(len(self.index) - 1) |
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|
473 def count(self): return len(self.index) |
2072 | 474 def node(self, rev): |
3585
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|
475 return rev == nullrev and nullid or self.index[rev][-1] |
1201
59bfbdbc38f6
revlog: raise informative exception if file is missing.
Bryan O'Sullivan <bos@serpentine.com>
parents:
1099
diff
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|
476 def rev(self, node): |
59bfbdbc38f6
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parents:
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|
477 try: |
59bfbdbc38f6
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parents:
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|
478 return self.nodemap[node] |
59bfbdbc38f6
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parents:
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|
479 except KeyError: |
3930
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parents:
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changeset
|
480 raise LookupError(_('%s: no node %s') % (self.indexfile, hex(node))) |
2642
6414ee2eb688
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parents:
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changeset
|
481 def linkrev(self, node): |
3578
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parents:
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|
482 return (node == nullid) and nullrev or self.index[self.rev(node)][-4] |
2 | 483 def parents(self, node): |
484 if node == nullid: return (nullid, nullid) | |
2072 | 485 r = self.rev(node) |
486 d = self.index[r][-3:-1] | |
2142
8a1e2a9c7013
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parents:
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487 if self.version == REVLOGV0: |
2072 | 488 return d |
3508
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parents:
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|
489 return (self.node(d[0]), self.node(d[1])) |
2489
568e58eed096
Add revlog.parentrevs function.
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parents:
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|
490 def parentrevs(self, rev): |
3578
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parents:
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491 if rev == nullrev: |
3b4e00cba57a
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492 return (nullrev, nullrev) |
2489
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493 d = self.index[rev][-3:-1] |
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494 if self.version == REVLOGV0: |
3508
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495 return (self.rev(d[0]), self.rev(d[1])) |
2489
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parents:
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496 return d |
2072 | 497 def start(self, rev): |
3585
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parents:
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498 if rev == nullrev: |
3584
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499 return 0 |
2142
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parents:
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|
500 if self.version != REVLOGV0: |
2072 | 501 return self.ngoffset(self.index[rev][0]) |
502 return self.index[rev][0] | |
2078
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503 |
2072 | 504 def end(self, rev): return self.start(rev) + self.length(rev) |
0
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|
505 |
2078
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506 def size(self, rev): |
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507 """return the length of the uncompressed text for a given revision""" |
3582
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revlog.size() fix handling of rev == -1
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508 if rev == nullrev: |
9fb7d3a05882
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509 return 0 |
2078
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parents:
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|
510 l = -1 |
2142
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parents:
2141
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|
511 if self.version != REVLOGV0: |
2078
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512 l = self.index[rev][2] |
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|
513 if l >= 0: |
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|
514 return l |
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|
515 |
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|
516 t = self.revision(self.node(rev)) |
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517 return len(t) |
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518 |
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519 # alternate implementation, The advantage to this code is it |
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520 # will be faster for a single revision. But, the results are not |
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521 # cached, so finding the size of every revision will be slower. |
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522 """ |
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523 if self.cache and self.cache[1] == rev: |
441ea218414e
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524 return len(self.cache[2]) |
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diff
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525 |
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|
526 base = self.base(rev) |
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527 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
441ea218414e
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diff
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|
528 base = self.cache[1] |
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|
529 text = self.cache[2] |
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530 else: |
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|
531 text = self.revision(self.node(base)) |
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532 |
441ea218414e
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533 l = len(text) |
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534 for x in xrange(base + 1, rev + 1): |
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535 l = mdiff.patchedsize(l, self.chunk(x)) |
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536 return l |
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diff
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|
537 """ |
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diff
changeset
|
538 |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
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parents:
1853
diff
changeset
|
539 def length(self, rev): |
3585
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parents:
3584
diff
changeset
|
540 if rev == nullrev: |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
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|
541 return 0 |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
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|
542 else: |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
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parents:
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diff
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|
543 return self.index[rev][1] |
3585
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|
544 def base(self, rev): |
cac2c17bec5a
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|
545 if (rev == nullrev): |
cac2c17bec5a
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|
546 return nullrev |
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547 else: |
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|
548 return self.index[rev][-5] |
0
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diff
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|
549 |
3630
508036290b00
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3585
diff
changeset
|
550 def reachable(self, node, stop=None): |
3683 | 551 """return a hash of all nodes ancestral to a given node, including |
552 the node itself, stopping when stop is matched""" | |
1074
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553 reachable = {} |
3630
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Matt Mackall <mpm@selenic.com>
parents:
3585
diff
changeset
|
554 visit = [node] |
508036290b00
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parents:
3585
diff
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555 reachable[node] = 1 |
1074
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parents:
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556 if stop: |
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557 stopn = self.rev(stop) |
55bf5cfde69e
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558 else: |
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559 stopn = 0 |
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560 while visit: |
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|
561 n = visit.pop(0) |
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562 if n == stop: |
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parents:
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diff
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|
563 continue |
55bf5cfde69e
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parents:
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diff
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|
564 if n == nullid: |
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parents:
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diff
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|
565 continue |
55bf5cfde69e
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parents:
1073
diff
changeset
|
566 for p in self.parents(n): |
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Add revlog.reachable to find a graph of ancestors for a given rev
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parents:
1073
diff
changeset
|
567 if self.rev(p) < stopn: |
55bf5cfde69e
Add revlog.reachable to find a graph of ancestors for a given rev
mason@suse.com
parents:
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|
568 continue |
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parents:
1073
diff
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|
569 if p not in reachable: |
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mason@suse.com
parents:
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diff
changeset
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570 reachable[p] = 1 |
55bf5cfde69e
Add revlog.reachable to find a graph of ancestors for a given rev
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parents:
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571 visit.append(p) |
55bf5cfde69e
Add revlog.reachable to find a graph of ancestors for a given rev
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parents:
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572 return reachable |
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diff
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|
573 |
1457
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
574 def nodesbetween(self, roots=None, heads=None): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
575 """Return a tuple containing three elements. Elements 1 and 2 contain |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
576 a final list bases and heads after all the unreachable ones have been |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
577 pruned. Element 0 contains a topologically sorted list of all |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
1351
diff
changeset
|
578 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
579 nodes that satisfy these constraints: |
518da3c3b6ce
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parents:
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diff
changeset
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580 1. All nodes must be descended from a node in roots (the nodes on |
518da3c3b6ce
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Eric Hopper <hopper@omnifarious.org>
parents:
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diff
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581 roots are considered descended from themselves). |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
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582 2. All nodes must also be ancestors of a node in heads (the nodes in |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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parents:
1351
diff
changeset
|
583 heads are considered to be their own ancestors). |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
584 |
518da3c3b6ce
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Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
585 If roots is unspecified, nullid is assumed as the only root. |
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This implements the nodesbetween method, and it removes the newer method
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586 If heads is unspecified, it is taken to be the output of the |
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587 heads method (i.e. a list of all nodes in the repository that |
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588 have no children).""" |
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589 nonodes = ([], [], []) |
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590 if roots is not None: |
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591 roots = list(roots) |
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592 if not roots: |
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593 return nonodes |
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594 lowestrev = min([self.rev(n) for n in roots]) |
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595 else: |
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596 roots = [nullid] # Everybody's a descendent of nullid |
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597 lowestrev = nullrev |
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598 if (lowestrev == nullrev) and (heads is None): |
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599 # We want _all_ the nodes! |
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600 return ([self.node(r) for r in xrange(0, self.count())], |
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601 [nullid], list(self.heads())) |
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602 if heads is None: |
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603 # All nodes are ancestors, so the latest ancestor is the last |
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604 # node. |
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605 highestrev = self.count() - 1 |
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606 # Set ancestors to None to signal that every node is an ancestor. |
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607 ancestors = None |
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608 # Set heads to an empty dictionary for later discovery of heads |
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609 heads = {} |
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610 else: |
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611 heads = list(heads) |
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612 if not heads: |
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613 return nonodes |
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614 ancestors = {} |
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615 # Turn heads into a dictionary so we can remove 'fake' heads. |
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616 # Also, later we will be using it to filter out the heads we can't |
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617 # find from roots. |
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618 heads = dict.fromkeys(heads, 0) |
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619 # Start at the top and keep marking parents until we're done. |
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620 nodestotag = heads.keys() |
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621 # Remember where the top was so we can use it as a limit later. |
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622 highestrev = max([self.rev(n) for n in nodestotag]) |
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623 while nodestotag: |
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624 # grab a node to tag |
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625 n = nodestotag.pop() |
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626 # Never tag nullid |
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627 if n == nullid: |
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628 continue |
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629 # A node's revision number represents its place in a |
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630 # topologically sorted list of nodes. |
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631 r = self.rev(n) |
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632 if r >= lowestrev: |
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633 if n not in ancestors: |
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634 # If we are possibly a descendent of one of the roots |
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635 # and we haven't already been marked as an ancestor |
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636 ancestors[n] = 1 # Mark as ancestor |
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637 # Add non-nullid parents to list of nodes to tag. |
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638 nodestotag.extend([p for p in self.parents(n) if |
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639 p != nullid]) |
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640 elif n in heads: # We've seen it before, is it a fake head? |
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641 # So it is, real heads should not be the ancestors of |
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642 # any other heads. |
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643 heads.pop(n) |
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644 if not ancestors: |
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645 return nonodes |
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646 # Now that we have our set of ancestors, we want to remove any |
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647 # roots that are not ancestors. |
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648 |
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649 # If one of the roots was nullid, everything is included anyway. |
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650 if lowestrev > nullrev: |
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651 # But, since we weren't, let's recompute the lowest rev to not |
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652 # include roots that aren't ancestors. |
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653 |
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654 # Filter out roots that aren't ancestors of heads |
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655 roots = [n for n in roots if n in ancestors] |
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656 # Recompute the lowest revision |
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657 if roots: |
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658 lowestrev = min([self.rev(n) for n in roots]) |
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659 else: |
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660 # No more roots? Return empty list |
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661 return nonodes |
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662 else: |
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663 # We are descending from nullid, and don't need to care about |
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664 # any other roots. |
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665 lowestrev = nullrev |
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666 roots = [nullid] |
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667 # Transform our roots list into a 'set' (i.e. a dictionary where the |
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668 # values don't matter. |
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669 descendents = dict.fromkeys(roots, 1) |
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670 # Also, keep the original roots so we can filter out roots that aren't |
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671 # 'real' roots (i.e. are descended from other roots). |
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672 roots = descendents.copy() |
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673 # Our topologically sorted list of output nodes. |
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674 orderedout = [] |
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675 # Don't start at nullid since we don't want nullid in our output list, |
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676 # and if nullid shows up in descedents, empty parents will look like |
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677 # they're descendents. |
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678 for r in xrange(max(lowestrev, 0), highestrev + 1): |
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679 n = self.node(r) |
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680 isdescendent = False |
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681 if lowestrev == nullrev: # Everybody is a descendent of nullid |
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682 isdescendent = True |
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683 elif n in descendents: |
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684 # n is already a descendent |
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685 isdescendent = True |
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686 # This check only needs to be done here because all the roots |
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687 # will start being marked is descendents before the loop. |
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688 if n in roots: |
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689 # If n was a root, check if it's a 'real' root. |
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690 p = tuple(self.parents(n)) |
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691 # If any of its parents are descendents, it's not a root. |
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692 if (p[0] in descendents) or (p[1] in descendents): |
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693 roots.pop(n) |
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694 else: |
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695 p = tuple(self.parents(n)) |
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696 # A node is a descendent if either of its parents are |
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parents:
1351
diff
changeset
|
697 # descendents. (We seeded the dependents list with the roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
698 # up there, remember?) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
699 if (p[0] in descendents) or (p[1] in descendents): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
700 descendents[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
701 isdescendent = True |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
702 if isdescendent and ((ancestors is None) or (n in ancestors)): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
703 # Only include nodes that are both descendents and ancestors. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
704 orderedout.append(n) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
705 if (ancestors is not None) and (n in heads): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
706 # We're trying to figure out which heads are reachable |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
707 # from roots. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
708 # Mark this head as having been reached |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
709 heads[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
710 elif ancestors is None: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
711 # Otherwise, we're trying to discover the heads. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
712 # Assume this is a head because if it isn't, the next step |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
713 # will eventually remove it. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
714 heads[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
715 # But, obviously its parents aren't. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
716 for p in self.parents(n): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
717 heads.pop(p, None) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
718 heads = [n for n in heads.iterkeys() if heads[n] != 0] |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
719 roots = roots.keys() |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
720 assert orderedout |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
721 assert roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
722 assert heads |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
723 return (orderedout, roots, heads) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
724 |
3923
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
725 def heads(self, start=None, stop=None): |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
726 """return the list of all nodes that have no children |
1551
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
727 |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
728 if start is specified, only heads that are descendants of |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
729 start will be returned |
3923
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
730 if stop is specified, it will consider all the revs from stop |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
731 as if they had no children |
1551
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
732 """ |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
733 if start is None: |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
734 start = nullid |
3923
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
735 if stop is None: |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
736 stop = [] |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
737 stoprevs = dict.fromkeys([self.rev(n) for n in stop]) |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
738 startrev = self.rev(start) |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
739 reachable = {startrev: 1} |
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
740 heads = {startrev: 1} |
1083 | 741 |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
742 parentrevs = self.parentrevs |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
743 for r in xrange(startrev + 1, self.count()): |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
744 for p in parentrevs(r): |
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
745 if p in reachable: |
3923
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
746 if r not in stoprevs: |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
747 reachable[r] = 1 |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
748 heads[r] = 1 |
3923
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
749 if p in heads and p not in stoprevs: |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
750 del heads[p] |
3923
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
751 |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
752 return [self.node(r) for r in heads] |
370 | 753 |
754 def children(self, node): | |
1083 | 755 """find the children of a given node""" |
370 | 756 c = [] |
757 p = self.rev(node) | |
758 for r in range(p + 1, self.count()): | |
3474
fd8f1110562c
fix errors spotted by pychecker
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3470
diff
changeset
|
759 for pr in self.parentrevs(r): |
3470
c6773b7ebee8
revlog.children: use parentrevs instead of parents
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3438
diff
changeset
|
760 if pr == p: |
c6773b7ebee8
revlog.children: use parentrevs instead of parents
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3438
diff
changeset
|
761 c.append(self.node(r)) |
370 | 762 return c |
515 | 763 |
3453
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
764 def _match(self, id): |
3210
7240f9e47144
correctly find the type of 'id' in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3157
diff
changeset
|
765 if isinstance(id, (long, int)): |
3156
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
766 # rev |
2641
156fb1feab62
lookup should allow -1 to represent nullid (if passed an int as arg)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2600
diff
changeset
|
767 return self.node(id) |
3438 | 768 if len(id) == 20: |
769 # possibly a binary node | |
770 # odds of a binary node being all hex in ASCII are 1 in 10**25 | |
771 try: | |
772 node = id | |
773 r = self.rev(node) # quick search the index | |
774 return node | |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
775 except LookupError: |
3438 | 776 pass # may be partial hex id |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
777 try: |
3156
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
778 # str(rev) |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
779 rev = int(id) |
469 | 780 if str(rev) != id: raise ValueError |
781 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
|
782 if rev < 0 or rev >= self.count(): raise ValueError |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
783 return self.node(rev) |
469 | 784 except (ValueError, OverflowError): |
3156
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
785 pass |
3453
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
786 if len(id) == 40: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
787 try: |
3438 | 788 # a full hex nodeid? |
789 node = bin(id) | |
790 r = self.rev(node) | |
3157
4fe41a9e4591
optimize revlog.lookup when passed hex(node)[:...]
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3156
diff
changeset
|
791 return node |
3453
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
792 except TypeError: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
793 pass |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
794 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
795 def _partialmatch(self, id): |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
796 if len(id) < 40: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
797 try: |
3438 | 798 # hex(node)[:...] |
799 bin_id = bin(id[:len(id) & ~1]) # grab an even number of digits | |
800 node = None | |
801 for n in self.nodemap: | |
802 if n.startswith(bin_id) and hex(n).startswith(id): | |
803 if node is not None: | |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
804 raise LookupError(_("Ambiguous identifier")) |
3438 | 805 node = n |
806 if node is not None: | |
807 return node | |
3453
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
808 except TypeError: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
809 pass |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
810 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
811 def lookup(self, id): |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
812 """locate a node based on: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
813 - revision number or str(revision number) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
814 - nodeid or subset of hex nodeid |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
815 """ |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
816 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
817 n = self._match(id) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
818 if n is not None: |
dba3cadef789
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Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
819 return n |
dba3cadef789
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parents:
3438
diff
changeset
|
820 n = self._partialmatch(id) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
821 if n: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
822 return n |
515 | 823 |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
824 raise LookupError(_("No match found")) |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
825 |
2890
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
826 def cmp(self, node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
827 """compare text with a given file revision""" |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
828 p1, p2 = self.parents(node) |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
829 return hash(text, p1, p2) != node |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
830 |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
831 def makenode(self, node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
832 """calculate a file nodeid for text, descended or possibly |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
833 unchanged from node""" |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
834 |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
835 if self.cmp(node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
836 return hash(text, node, nullid) |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2859
diff
changeset
|
837 return node |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
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838 |
0
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|
839 def diff(self, a, b): |
1083 | 840 """return a delta between two revisions""" |
0
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parents:
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|
841 return mdiff.textdiff(a, b) |
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842 |
73 | 843 def patches(self, t, pl): |
1083 | 844 """apply a list of patches to a string""" |
73 | 845 return mdiff.patches(t, pl) |
846 | |
2072 | 847 def chunk(self, rev, df=None, cachelen=4096): |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
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|
848 start, length = self.start(rev), self.length(rev) |
2073 | 849 inline = self.inlinedata() |
850 if inline: | |
851 start += (rev + 1) * struct.calcsize(self.indexformat) | |
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852 end = start + length |
2072 | 853 def loadcache(df): |
854 cache_length = max(cachelen, length) # 4k | |
855 if not df: | |
2073 | 856 if inline: |
857 df = self.opener(self.indexfile) | |
858 else: | |
859 df = self.opener(self.datafile) | |
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|
860 df.seek(start) |
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861 self.chunkcache = (start, df.read(cache_length)) |
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parents:
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862 |
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changeset
|
863 if not self.chunkcache: |
2072 | 864 loadcache(df) |
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865 |
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866 cache_start = self.chunkcache[0] |
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867 cache_end = cache_start + len(self.chunkcache[1]) |
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868 if start >= cache_start and end <= cache_end: |
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869 # it is cached |
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870 offset = start - cache_start |
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871 else: |
2072 | 872 loadcache(df) |
1598
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873 offset = 0 |
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874 |
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875 #def checkchunk(): |
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876 # df = self.opener(self.datafile) |
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877 # df.seek(start) |
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878 # return df.read(length) |
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879 #assert s == checkchunk() |
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880 return decompress(self.chunkcache[1][offset:offset + length]) |
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881 |
119
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882 def delta(self, node): |
1083 | 883 """return or calculate a delta between a node and its predecessor""" |
119
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884 r = self.rev(node) |
1941
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885 return self.revdiff(r - 1, r) |
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886 |
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887 def revdiff(self, rev1, rev2): |
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888 """return or calculate a delta between two revisions""" |
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889 b1 = self.base(rev1) |
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890 b2 = self.base(rev2) |
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891 if b1 == b2 and rev1 + 1 == rev2: |
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892 return self.chunk(rev2) |
119
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893 else: |
1941
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894 return self.diff(self.revision(self.node(rev1)), |
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895 self.revision(self.node(rev2))) |
119
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896 |
0
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897 def revision(self, node): |
1083 | 898 """return an uncompressed revision of a given""" |
36
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899 if node == nullid: return "" |
0
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900 if self.cache and self.cache[0] == node: return self.cache[2] |
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901 |
1083 | 902 # look up what we need to read |
0
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903 text = None |
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904 rev = self.rev(node) |
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905 base = self.base(rev) |
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906 |
2073 | 907 if self.inlinedata(): |
908 # we probably have the whole chunk cached | |
909 df = None | |
910 else: | |
911 df = self.opener(self.datafile) | |
2072 | 912 |
1083 | 913 # do we have useful data cached? |
0
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914 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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915 base = self.cache[1] |
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916 text = self.cache[2] |
2079 | 917 self.loadindex(base, rev + 1) |
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918 else: |
2079 | 919 self.loadindex(base, rev + 1) |
2072 | 920 text = self.chunk(base, df=df) |
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921 |
71
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diff
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|
922 bins = [] |
64 | 923 for r in xrange(base + 1, rev + 1): |
2072 | 924 bins.append(self.chunk(r, df=df)) |
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925 |
1941
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|
926 text = self.patches(text, bins) |
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927 |
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928 p1, p2 = self.parents(node) |
26 | 929 if node != hash(text, p1, p2): |
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i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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930 raise RevlogError(_("integrity check failed on %s:%d") |
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931 % (self.datafile, rev)) |
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932 |
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933 self.cache = (node, rev, text) |
515 | 934 return text |
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935 |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
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2073
diff
changeset
|
936 def checkinlinesize(self, tr, fp=None): |
2073 | 937 if not self.inlinedata(): |
938 return | |
2075
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Make the appendfile class inline-data index friendly
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diff
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|
939 if not fp: |
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diff
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940 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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|
941 fp.seek(0, 2) |
2073 | 942 size = fp.tell() |
943 if size < 131072: | |
944 return | |
2084 | 945 trinfo = tr.find(self.indexfile) |
946 if trinfo == None: | |
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947 raise RevlogError(_("%s not found in the transaction") |
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
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|
948 % self.indexfile) |
2084 | 949 |
950 trindex = trinfo[2] | |
951 dataoff = self.start(trindex) | |
952 | |
953 tr.add(self.datafile, dataoff) | |
2073 | 954 df = self.opener(self.datafile, 'w') |
955 calc = struct.calcsize(self.indexformat) | |
956 for r in xrange(self.count()): | |
957 start = self.start(r) + (r + 1) * calc | |
958 length = self.length(r) | |
959 fp.seek(start) | |
960 d = fp.read(length) | |
961 df.write(d) | |
962 fp.close() | |
963 df.close() | |
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964 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
2073 | 965 self.version &= ~(REVLOGNGINLINEDATA) |
966 if self.count(): | |
967 x = self.index[0] | |
968 e = struct.pack(self.indexformat, *x)[4:] | |
969 l = struct.pack(versionformat, self.version) | |
970 fp.write(l) | |
971 fp.write(e) | |
972 | |
973 for i in xrange(1, self.count()): | |
974 x = self.index[i] | |
975 e = struct.pack(self.indexformat, *x) | |
976 fp.write(e) | |
977 | |
2076
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978 # if we don't call rename, the temp file will never replace the |
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979 # real index |
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980 fp.rename() |
2084 | 981 |
982 tr.replace(self.indexfile, trindex * calc) | |
2073 | 983 self.chunkcache = None |
984 | |
644 | 985 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
1083 | 986 """add a revision to the log |
987 | |
988 text - the revision data to add | |
989 transaction - the transaction object used for rollback | |
990 link - the linkrev data to add | |
991 p1, p2 - the parent nodeids of the revision | |
992 d - an optional precomputed delta | |
993 """ | |
3390
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994 if not self.inlinedata(): |
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995 dfh = self.opener(self.datafile, "a") |
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996 else: |
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997 dfh = None |
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998 ifh = self.opener(self.indexfile, "a+") |
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999 return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) |
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1000 |
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1001 def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): |
0
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1002 if text is None: text = "" |
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1003 if p1 is None: p1 = self.tip() |
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1004 if p2 is None: p2 = nullid |
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1005 |
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1006 node = hash(text, p1, p2) |
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1007 |
301 | 1008 if node in self.nodemap: |
1009 return node | |
1010 | |
0
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1011 n = self.count() |
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1012 t = n - 1 |
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1013 |
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1014 if n: |
64 | 1015 base = self.base(t) |
1016 start = self.start(base) | |
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1017 end = self.end(t) |
644 | 1018 if not d: |
1019 prev = self.revision(self.tip()) | |
3335
9061613c1593
Teach bdiff to support buffer objects
Brendan Cully <brendan@kublai.com>
parents:
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|
1020 d = self.diff(prev, text) |
98 | 1021 data = compress(d) |
1533
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Reduce string duplication in compression code
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1022 l = len(data[1]) + len(data[0]) |
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1023 dist = end - start + l |
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1024 |
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1025 # full versions are inserted when the needed deltas |
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1026 # become comparable to the uncompressed text |
64 | 1027 if not n or dist > len(text) * 2: |
0
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changeset
|
1028 data = compress(text) |
1533
3d11f81c9145
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|
1029 l = len(data[1]) + len(data[0]) |
0
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1030 base = n |
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|
1031 else: |
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1032 base = self.base(t) |
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1033 |
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|
1034 offset = 0 |
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1035 if t >= 0: |
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1036 offset = self.end(t) |
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|
1037 |
2142
8a1e2a9c7013
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
1038 if self.version == REVLOGV0: |
2072 | 1039 e = (offset, l, base, link, p1, p2, node) |
1040 else: | |
1041 e = (self.offset_type(offset, 0), l, len(text), | |
1042 base, link, self.rev(p1), self.rev(p2), node) | |
515 | 1043 |
0
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|
1044 self.index.append(e) |
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|
1045 self.nodemap[node] = n |
2072 | 1046 entry = struct.pack(self.indexformat, *e) |
0
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|
1047 |
2073 | 1048 if not self.inlinedata(): |
1049 transaction.add(self.datafile, offset) | |
1050 transaction.add(self.indexfile, n * len(entry)) | |
1051 if data[0]: | |
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make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
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|
1052 dfh.write(data[0]) |
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make revlog.addgroup pass its file handles to addrevision
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1053 dfh.write(data[1]) |
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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1054 dfh.flush() |
2073 | 1055 else: |
3390
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1056 ifh.seek(0, 2) |
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1057 transaction.add(self.indexfile, ifh.tell(), self.count() - 1) |
2072 | 1058 |
2142
8a1e2a9c7013
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
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|
1059 if len(self.index) == 1 and self.version != REVLOGV0: |
2072 | 1060 l = struct.pack(versionformat, self.version) |
3390
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1061 ifh.write(l) |
2072 | 1062 entry = entry[4:] |
1063 | |
3390
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|
1064 ifh.write(entry) |
0
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|
1065 |
2073 | 1066 if self.inlinedata(): |
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1067 ifh.write(data[0]) |
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1068 ifh.write(data[1]) |
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1069 self.checkinlinesize(transaction, ifh) |
2073 | 1070 |
0
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1071 self.cache = (node, n, text) |
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1072 return node |
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1073 |
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1074 def ancestor(self, a, b): |
1083 | 1075 """calculate the least common ancestor of nodes a and b""" |
2081
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
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1076 |
3139
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
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|
1077 def parents(rev): |
3578
3b4e00cba57a
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Thomas Arendsen Hein <thomas@intevation.de>
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|
1078 return [p for p in self.parentrevs(rev) if p != nullrev] |
515 | 1079 |
3139
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1080 c = ancestor.ancestor(self.rev(a), self.rev(b), parents) |
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1081 if c is None: |
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|
1082 return nullid |
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1083 |
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|
1084 return self.node(c) |
0
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1085 |
1598
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parents:
1559
diff
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|
1086 def group(self, nodelist, lookup, infocollect=None): |
1083 | 1087 """calculate a delta group |
46 | 1088 |
1083 | 1089 Given a list of changeset revs, return a set of deltas and |
1090 metadata corresponding to nodes. the first delta is | |
1091 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1092 have this parent as it has all history before these | |
1093 changesets. parent is parent[0] | |
1094 """ | |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
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|
1095 revs = [self.rev(n) for n in nodelist] |
46 | 1096 |
1097 # if we don't have any revisions touched by these changesets, bail | |
192 | 1098 if not revs: |
1981
736b6c96bbbc
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
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|
1099 yield changegroup.closechunk() |
192 | 1100 return |
46 | 1101 |
1102 # add the parent of the first rev | |
1103 p = self.parents(self.node(revs[0]))[0] | |
1104 revs.insert(0, self.rev(p)) | |
1105 | |
1106 # build deltas | |
71
47c9a869adee
Add mdiff.patches to speed up applying thousands of patches to the manifest
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diff
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1107 for d in xrange(0, len(revs) - 1): |
46 | 1108 a, b = revs[d], revs[d + 1] |
1598
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|
1109 nb = self.node(b) |
192 | 1110 |
1458
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parents:
1457
diff
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|
1111 if infocollect is not None: |
1598
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|
1112 infocollect(nb) |
1458
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1457
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|
1113 |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
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1853
diff
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|
1114 d = self.revdiff(a, b) |
1598
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1115 p = self.parents(nb) |
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|
1116 meta = nb + p[0] + p[1] + lookup(nb) |
1981
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
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|
1117 yield changegroup.genchunk("%s%s" % (meta, d)) |
46 | 1118 |
1981
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
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|
1119 yield changegroup.closechunk() |
192 | 1120 |
1062 | 1121 def addgroup(self, revs, linkmapper, transaction, unique=0): |
1083 | 1122 """ |
1123 add a delta group | |
46 | 1124 |
1083 | 1125 given a set of deltas, add them to the revision log. the |
1126 first delta is against its parent, which should be in our | |
1127 log, the rest are against the previous delta. | |
1128 """ | |
1129 | |
1130 #track the base of the current delta log | |
46 | 1131 r = self.count() |
1132 t = r - 1 | |
2002
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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|
1133 node = None |
515 | 1134 |
3578
3b4e00cba57a
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Thomas Arendsen Hein <thomas@intevation.de>
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|
1135 base = prev = nullrev |
2078
441ea218414e
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1136 start = end = textlen = 0 |
46 | 1137 if r: |
1138 end = self.end(t) | |
1139 | |
2072 | 1140 ifh = self.opener(self.indexfile, "a+") |
2077
4d0700ae0991
Fix inlined revlogs to seek to eof after opening "a+"
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|
1141 ifh.seek(0, 2) |
2084 | 1142 transaction.add(self.indexfile, ifh.tell(), self.count()) |
2073 | 1143 if self.inlinedata(): |
1144 dfh = None | |
1145 else: | |
1146 transaction.add(self.datafile, end) | |
1147 dfh = self.opener(self.datafile, "a") | |
46 | 1148 |
1149 # loop through our set of deltas | |
192 | 1150 chain = None |
1151 for chunk in revs: | |
1152 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
94 | 1153 link = linkmapper(cs) |
77 | 1154 if node in self.nodemap: |
224
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221
diff
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1155 # this can happen if two branches make the same change |
1218
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Add preliminary support for the bundle and unbundle commands
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1156 # if unique: |
1402
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i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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1157 # raise RevlogError(_("already have %s") % hex(node[:4])) |
653
94cdd02792b5
Fix corruption resulting from skipping parts of a revision group
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1158 chain = node |
224
ccbcc4d76f81
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1159 continue |
192 | 1160 delta = chunk[80:] |
1161 | |
1509
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parents:
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1162 for p in (p1, p2): |
46a07392cf28
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|
1163 if not p in self.nodemap: |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
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|
1164 raise LookupError(_("unknown parent %s") % short(p)) |
1509
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|
1165 |
192 | 1166 if not chain: |
1167 # retrieve the parent revision of the delta chain | |
1168 chain = p1 | |
1169 if not chain in self.nodemap: | |
3930
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parents:
3928
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|
1170 raise LookupError(_("unknown base %s") % short(chain[:4])) |
46 | 1171 |
1172 # full versions are inserted when the needed deltas become | |
1173 # comparable to the uncompressed text or when the previous | |
1174 # version is not the one we have a delta against. We use | |
1175 # the size of the previous full rev as a proxy for the | |
1176 # current size. | |
1177 | |
1178 if chain == prev: | |
1533
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1509
diff
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|
1179 tempd = compress(delta) |
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diff
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|
1180 cdelta = tempd[0] + tempd[1] |
2078
441ea218414e
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parents:
2077
diff
changeset
|
1181 textlen = mdiff.patchedsize(textlen, delta) |
46 | 1182 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
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parents:
2077
diff
changeset
|
1183 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
46 | 1184 # flush our writes here so we can read it in revision |
2072 | 1185 if dfh: |
1186 dfh.flush() | |
46 | 1187 ifh.flush() |
65
d40cc5aacc31
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parents:
64
diff
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|
1188 text = self.revision(chain) |
73 | 1189 text = self.patches(text, [delta]) |
3390
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|
1190 chk = self._addrevision(text, transaction, link, p1, p2, None, |
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1191 ifh, dfh) |
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1192 if not dfh and not self.inlinedata(): |
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|
1193 # addrevision switched from inline to conventional |
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|
1194 # reopen the index |
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1195 dfh = self.opener(self.datafile, "a") |
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|
1196 ifh = self.opener(self.indexfile, "a") |
46 | 1197 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
|
1198 raise RevlogError(_("consistency error adding group")) |
2078
441ea218414e
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parents:
2077
diff
changeset
|
1199 textlen = len(text) |
46 | 1200 else: |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
1201 if self.version == REVLOGV0: |
2072 | 1202 e = (end, len(cdelta), base, link, p1, p2, node) |
1203 else: | |
2078
441ea218414e
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parents:
2077
diff
changeset
|
1204 e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
2072 | 1205 link, self.rev(p1), self.rev(p2), node) |
46 | 1206 self.index.append(e) |
1207 self.nodemap[node] = r | |
2073 | 1208 if self.inlinedata(): |
1209 ifh.write(struct.pack(self.indexformat, *e)) | |
1210 ifh.write(cdelta) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
1211 self.checkinlinesize(transaction, ifh) |
2073 | 1212 if not self.inlinedata(): |
1213 dfh = self.opener(self.datafile, "a") | |
1214 ifh = self.opener(self.indexfile, "a") | |
1215 else: | |
1216 dfh.write(cdelta) | |
1217 ifh.write(struct.pack(self.indexformat, *e)) | |
46 | 1218 |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
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64
diff
changeset
|
1219 t, r, chain, prev = r, r + 1, node, node |
1749
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
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parents:
1711
diff
changeset
|
1220 base = self.base(t) |
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
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1711
diff
changeset
|
1221 start = self.start(base) |
46 | 1222 end = self.end(t) |
1223 | |
1224 return node | |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1225 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1226 def strip(self, rev, minlink): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1227 if self.count() == 0 or rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
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1533
diff
changeset
|
1228 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
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1533
diff
changeset
|
1229 |
2072 | 1230 if isinstance(self.index, lazyindex): |
1231 self.loadindexmap() | |
1232 | |
1535
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1233 # When stripping away a revision, we need to make sure it |
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1234 # does not actually belong to an older changeset. |
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1235 # The minlink parameter defines the oldest revision |
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1236 # we're allowed to strip away. |
2072 | 1237 while minlink > self.index[rev][-4]: |
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1238 rev += 1 |
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1239 if rev >= self.count(): |
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1240 return |
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1241 |
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1242 # first truncate the files on disk |
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1243 end = self.start(rev) |
2073 | 1244 if not self.inlinedata(): |
1245 df = self.opener(self.datafile, "a") | |
1246 df.truncate(end) | |
1247 end = rev * struct.calcsize(self.indexformat) | |
1248 else: | |
1249 end += rev * struct.calcsize(self.indexformat) | |
2072 | 1250 |
1251 indexf = self.opener(self.indexfile, "a") | |
1252 indexf.truncate(end) | |
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1253 |
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1254 # then reset internal state in memory to forget those revisions |
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1255 self.cache = None |
1711 | 1256 self.chunkcache = None |
2072 | 1257 for x in xrange(rev, self.count()): |
1258 del self.nodemap[self.node(x)] | |
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1259 |
2072 | 1260 del self.index[rev:] |
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1261 |
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1262 def checksize(self): |
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1263 expected = 0 |
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1264 if self.count(): |
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1265 expected = self.end(self.count() - 1) |
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1266 |
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1267 try: |
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1268 f = self.opener(self.datafile) |
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1269 f.seek(0, 2) |
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1270 actual = f.tell() |
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1271 dd = actual - expected |
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1272 except IOError, inst: |
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1273 if inst.errno != errno.ENOENT: |
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1274 raise |
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1275 dd = 0 |
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1276 |
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1277 try: |
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1278 f = self.opener(self.indexfile) |
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1279 f.seek(0, 2) |
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1280 actual = f.tell() |
2072 | 1281 s = struct.calcsize(self.indexformat) |
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1282 i = actual / s |
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1283 di = actual - (i * s) |
2073 | 1284 if self.inlinedata(): |
1285 databytes = 0 | |
1286 for r in xrange(self.count()): | |
1287 databytes += self.length(r) | |
1288 dd = 0 | |
1289 di = actual - self.count() * s - databytes | |
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1290 except IOError, inst: |
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1291 if inst.errno != errno.ENOENT: |
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1292 raise |
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1293 di = 0 |
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1294 |
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1295 return (dd, di) |
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1296 |
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1297 |