Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/revlog.py @ 3892:2eec996f2fb9
Fix demandload bits of setup.py py2exe support
author | Matt Mackall <mpm@selenic.com> |
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date | Thu, 14 Dec 2006 20:23:25 -0600 |
parents | abaee83ce0a6 |
children | 6b4127c7d52a |
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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 | |
2858 | 7 Copyright 2005, 2006 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 * |
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14 from i18n import gettext as _ |
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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 |
29 def flagstr(flag): | |
30 if flag == "inline": | |
31 return REVLOGNGINLINEDATA | |
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32 raise RevlogError(_("unknown revlog flag %s") % flag) |
2073 | 33 |
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34 def hash(text, p1, p2): |
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35 """generate a hash from the given text and its parent hashes |
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36 |
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37 This hash combines both the current file contents and its history |
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38 in a manner that makes it easy to distinguish nodes with the same |
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39 content in the revision graph. |
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40 """ |
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41 l = [p1, p2] |
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42 l.sort() |
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43 s = sha.new(l[0]) |
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44 s.update(l[1]) |
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45 s.update(text) |
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46 return s.digest() |
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47 |
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48 def compress(text): |
1083 | 49 """ generate a possibly-compressed representation of text """ |
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50 if not text: return ("", text) |
112 | 51 if len(text) < 44: |
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52 if text[0] == '\0': return ("", text) |
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53 return ('u', text) |
112 | 54 bin = zlib.compress(text) |
55 if len(bin) > len(text): | |
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56 if text[0] == '\0': return ("", text) |
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57 return ('u', text) |
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58 return ("", bin) |
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59 |
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60 def decompress(bin): |
1083 | 61 """ decompress the given input """ |
112 | 62 if not bin: return bin |
63 t = bin[0] | |
64 if t == '\0': return bin | |
65 if t == 'x': return zlib.decompress(bin) | |
66 if t == 'u': return bin[1:] | |
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67 raise RevlogError(_("unknown compression type %r") % t) |
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68 |
2072 | 69 indexformatv0 = ">4l20s20s20s" |
2079 | 70 v0shaoffset = 56 |
2072 | 71 # index ng: |
72 # 6 bytes offset | |
73 # 2 bytes flags | |
74 # 4 bytes compressed length | |
75 # 4 bytes uncompressed length | |
76 # 4 bytes: base rev | |
77 # 4 bytes link rev | |
78 # 4 bytes parent 1 rev | |
79 # 4 bytes parent 2 rev | |
80 # 32 bytes: nodeid | |
81 indexformatng = ">Qiiiiii20s12x" | |
2079 | 82 ngshaoffset = 32 |
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83 versionformat = ">I" |
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84 |
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85 class lazyparser(object): |
1083 | 86 """ |
87 this class avoids the need to parse the entirety of large indices | |
88 """ | |
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89 |
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90 # lazyparser is not safe to use on windows if win32 extensions not |
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91 # available. it keeps file handle open, which make it not possible |
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92 # to break hardlinks on local cloned repos. |
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93 safe_to_use = os.name != 'nt' or (not util.is_win_9x() and |
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94 hasattr(util, 'win32api')) |
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95 |
2079 | 96 def __init__(self, dataf, size, indexformat, shaoffset): |
97 self.dataf = dataf | |
98 self.format = indexformat | |
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99 self.s = struct.calcsize(indexformat) |
2072 | 100 self.indexformat = indexformat |
2079 | 101 self.datasize = size |
102 self.l = size/self.s | |
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103 self.index = [None] * self.l |
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104 self.map = {nullid: nullrev} |
2079 | 105 self.allmap = 0 |
323 | 106 self.all = 0 |
2079 | 107 self.mapfind_count = 0 |
108 self.shaoffset = shaoffset | |
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109 |
2079 | 110 def loadmap(self): |
111 """ | |
112 during a commit, we need to make sure the rev being added is | |
113 not a duplicate. This requires loading the entire index, | |
114 which is fairly slow. loadmap can load up just the node map, | |
115 which takes much less time. | |
116 """ | |
117 if self.allmap: return | |
118 end = self.datasize | |
119 self.allmap = 1 | |
120 cur = 0 | |
121 count = 0 | |
122 blocksize = self.s * 256 | |
123 self.dataf.seek(0) | |
124 while cur < end: | |
125 data = self.dataf.read(blocksize) | |
126 off = 0 | |
127 for x in xrange(256): | |
128 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
129 self.map[n] = count | |
130 count += 1 | |
131 if count >= self.l: | |
132 break | |
133 off += self.s | |
134 cur += blocksize | |
135 | |
136 def loadblock(self, blockstart, blocksize, data=None): | |
323 | 137 if self.all: return |
2079 | 138 if data is None: |
139 self.dataf.seek(blockstart) | |
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140 if blockstart + blocksize > self.datasize: |
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141 # the revlog may have grown since we've started running, |
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142 # but we don't have space in self.index for more entries. |
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143 # limit blocksize so that we don't get too much data. |
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144 blocksize = max(self.datasize - blockstart, 0) |
2079 | 145 data = self.dataf.read(blocksize) |
146 lend = len(data) / self.s | |
147 i = blockstart / self.s | |
148 off = 0 | |
149 for x in xrange(lend): | |
150 if self.index[i + x] == None: | |
151 b = data[off : off + self.s] | |
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152 self.index[i + x] = b |
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153 n = b[self.shaoffset:self.shaoffset + 20] |
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154 self.map[n] = i + x |
2079 | 155 off += self.s |
156 | |
157 def findnode(self, node): | |
158 """search backwards through the index file for a specific node""" | |
159 if self.allmap: return None | |
160 | |
161 # hg log will cause many many searches for the manifest | |
162 # nodes. After we get called a few times, just load the whole | |
163 # thing. | |
164 if self.mapfind_count > 8: | |
165 self.loadmap() | |
166 if node in self.map: | |
167 return node | |
168 return None | |
169 self.mapfind_count += 1 | |
170 last = self.l - 1 | |
171 while self.index[last] != None: | |
172 if last == 0: | |
173 self.all = 1 | |
174 self.allmap = 1 | |
175 return None | |
176 last -= 1 | |
177 end = (last + 1) * self.s | |
178 blocksize = self.s * 256 | |
179 while end >= 0: | |
180 start = max(end - blocksize, 0) | |
181 self.dataf.seek(start) | |
182 data = self.dataf.read(end - start) | |
183 findend = end - start | |
184 while True: | |
185 # we're searching backwards, so weh have to make sure | |
186 # we don't find a changeset where this node is a parent | |
187 off = data.rfind(node, 0, findend) | |
188 findend = off | |
189 if off >= 0: | |
190 i = off / self.s | |
191 off = i * self.s | |
192 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
193 if n == node: | |
194 self.map[n] = i + start / self.s | |
195 return node | |
196 else: | |
197 break | |
198 end -= blocksize | |
199 return None | |
200 | |
201 def loadindex(self, i=None, end=None): | |
202 if self.all: return | |
203 all = False | |
204 if i == None: | |
205 blockstart = 0 | |
206 blocksize = (512 / self.s) * self.s | |
207 end = self.datasize | |
208 all = True | |
323 | 209 else: |
2079 | 210 if end: |
211 blockstart = i * self.s | |
212 end = end * self.s | |
213 blocksize = end - blockstart | |
214 else: | |
215 blockstart = (i & ~(32)) * self.s | |
216 blocksize = self.s * 64 | |
217 end = blockstart + blocksize | |
218 while blockstart < end: | |
219 self.loadblock(blockstart, blocksize) | |
220 blockstart += blocksize | |
221 if all: self.all = True | |
515 | 222 |
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223 class lazyindex(object): |
1083 | 224 """a lazy version of the index array""" |
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225 def __init__(self, parser): |
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226 self.p = parser |
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227 def __len__(self): |
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228 return len(self.p.index) |
115 | 229 def load(self, pos): |
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230 if pos < 0: |
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231 pos += len(self.p.index) |
2079 | 232 self.p.loadindex(pos) |
115 | 233 return self.p.index[pos] |
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234 def __getitem__(self, pos): |
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235 ret = self.p.index[pos] or self.load(pos) |
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236 if isinstance(ret, str): |
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237 ret = struct.unpack(self.p.indexformat, ret) |
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238 return ret |
2072 | 239 def __setitem__(self, pos, item): |
240 self.p.index[pos] = item | |
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241 def __delitem__(self, pos): |
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242 del self.p.index[pos] |
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243 def append(self, e): |
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244 self.p.index.append(e) |
515 | 245 |
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246 class lazymap(object): |
1083 | 247 """a lazy version of the node map""" |
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248 def __init__(self, parser): |
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249 self.p = parser |
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250 def load(self, key): |
2079 | 251 n = self.p.findnode(key) |
252 if n == None: | |
1214 | 253 raise KeyError(key) |
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254 def __contains__(self, key): |
2079 | 255 if key in self.p.map: |
256 return True | |
257 self.p.loadmap() | |
323 | 258 return key in self.p.map |
97 | 259 def __iter__(self): |
469 | 260 yield nullid |
97 | 261 for i in xrange(self.p.l): |
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262 ret = self.p.index[i] |
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263 if not ret: |
2079 | 264 self.p.loadindex(i) |
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265 ret = self.p.index[i] |
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266 if isinstance(ret, str): |
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267 ret = struct.unpack(self.p.indexformat, ret) |
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268 yield ret[-1] |
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269 def __getitem__(self, key): |
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270 try: |
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271 return self.p.map[key] |
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272 except KeyError: |
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273 try: |
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274 self.load(key) |
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275 return self.p.map[key] |
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276 except KeyError: |
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277 raise KeyError("node " + hex(key)) |
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278 def __setitem__(self, key, val): |
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279 self.p.map[key] = val |
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280 def __delitem__(self, key): |
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281 del self.p.map[key] |
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282 |
1073
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283 class RevlogError(Exception): pass |
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284 |
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285 class revlog(object): |
1083 | 286 """ |
287 the underlying revision storage object | |
288 | |
289 A revlog consists of two parts, an index and the revision data. | |
290 | |
291 The index is a file with a fixed record size containing | |
292 information on each revision, includings its nodeid (hash), the | |
293 nodeids of its parents, the position and offset of its data within | |
294 the data file, and the revision it's based on. Finally, each entry | |
295 contains a linkrev entry that can serve as a pointer to external | |
296 data. | |
297 | |
298 The revision data itself is a linear collection of data chunks. | |
299 Each chunk represents a revision and is usually represented as a | |
300 delta against the previous chunk. To bound lookup time, runs of | |
301 deltas are limited to about 2 times the length of the original | |
302 version data. This makes retrieval of a version proportional to | |
303 its size, or O(1) relative to the number of revisions. | |
304 | |
305 Both pieces of the revlog are written to in an append-only | |
306 fashion, which means we never need to rewrite a file to insert or | |
307 remove data, and can use some simple techniques to avoid the need | |
308 for locking while reading. | |
309 """ | |
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310 def __init__(self, opener, indexfile, datafile, |
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311 defversion=REVLOG_DEFAULT_VERSION): |
1083 | 312 """ |
313 create a revlog object | |
314 | |
315 opener is a function that abstracts the file opening operation | |
316 and can be used to implement COW semantics or the like. | |
317 """ | |
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318 self.indexfile = indexfile |
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319 self.datafile = datafile |
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320 self.opener = opener |
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321 |
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322 self.indexstat = None |
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323 self.cache = None |
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324 self.chunkcache = None |
2072 | 325 self.defversion = defversion |
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326 self.load() |
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327 |
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328 def load(self): |
2072 | 329 v = self.defversion |
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330 try: |
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331 f = self.opener(self.indexfile) |
2079 | 332 i = f.read(4) |
333 f.seek(0) | |
1322
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334 except IOError, inst: |
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335 if inst.errno != errno.ENOENT: |
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336 raise |
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337 i = "" |
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338 else: |
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339 try: |
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340 st = util.fstat(f) |
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341 except AttributeError, inst: |
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342 st = None |
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343 else: |
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344 oldst = self.indexstat |
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345 if (oldst and st.st_dev == oldst.st_dev |
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346 and st.st_ino == oldst.st_ino |
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347 and st.st_mtime == oldst.st_mtime |
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348 and st.st_ctime == oldst.st_ctime): |
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349 return |
2072 | 350 self.indexstat = st |
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351 if len(i) > 0: |
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352 v = struct.unpack(versionformat, i)[0] |
2073 | 353 flags = v & ~0xFFFF |
354 fmt = v & 0xFFFF | |
2142
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355 if fmt == REVLOGV0: |
2073 | 356 if flags: |
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357 raise RevlogError(_("index %s unknown flags %#04x for format v0") |
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358 % (self.indexfile, flags >> 16)) |
2073 | 359 elif fmt == REVLOGNG: |
360 if flags & ~REVLOGNGINLINEDATA: | |
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361 raise RevlogError(_("index %s unknown flags %#04x for revlogng") |
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362 % (self.indexfile, flags >> 16)) |
2073 | 363 else: |
3744
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364 raise RevlogError(_("index %s unknown format %d") |
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365 % (self.indexfile, fmt)) |
2072 | 366 self.version = v |
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367 if v == REVLOGV0: |
2072 | 368 self.indexformat = indexformatv0 |
2079 | 369 shaoffset = v0shaoffset |
2072 | 370 else: |
371 self.indexformat = indexformatng | |
2079 | 372 shaoffset = ngshaoffset |
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373 |
2072 | 374 if i: |
2250
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375 if (lazyparser.safe_to_use and not self.inlinedata() and |
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376 st and st.st_size > 10000): |
2072 | 377 # big index, let's parse it on demand |
2079 | 378 parser = lazyparser(f, st.st_size, self.indexformat, shaoffset) |
2072 | 379 self.index = lazyindex(parser) |
380 self.nodemap = lazymap(parser) | |
381 else: | |
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382 self.parseindex(f, st) |
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383 if self.version != REVLOGV0: |
2072 | 384 e = list(self.index[0]) |
385 type = self.ngtype(e[0]) | |
386 e[0] = self.offset_type(0, type) | |
387 self.index[0] = e | |
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388 else: |
3578
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389 self.nodemap = {nullid: nullrev} |
2072 | 390 self.index = [] |
391 | |
392 | |
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393 def parseindex(self, fp, st): |
2072 | 394 s = struct.calcsize(self.indexformat) |
395 self.index = [] | |
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396 self.nodemap = {nullid: nullrev} |
2073 | 397 inline = self.inlinedata() |
2072 | 398 n = 0 |
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399 leftover = None |
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400 while True: |
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401 if st: |
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402 data = fp.read(65536) |
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403 else: |
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404 # hack for httprangereader, it doesn't do partial reads well |
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405 data = fp.read() |
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406 if not data: |
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407 break |
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408 if n == 0 and self.inlinedata(): |
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409 # cache the first chunk |
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410 self.chunkcache = (0, data) |
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411 if leftover: |
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412 data = leftover + data |
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413 leftover = None |
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414 off = 0 |
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415 l = len(data) |
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416 while off < l: |
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417 if l - off < s: |
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418 leftover = data[off:] |
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419 break |
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420 cur = data[off:off + s] |
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421 off += s |
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422 e = struct.unpack(self.indexformat, cur) |
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423 self.index.append(e) |
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424 self.nodemap[e[-1]] = n |
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425 n += 1 |
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426 if inline: |
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427 off += e[1] |
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428 if off > l: |
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429 # some things don't seek well, just read it |
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430 fp.read(off - l) |
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431 if not st: |
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432 break |
2600
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433 |
116
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434 |
2072 | 435 def ngoffset(self, q): |
436 if q & 0xFFFF: | |
437 raise RevlogError(_('%s: incompatible revision flag %x') % | |
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438 (self.indexfile, q)) |
2072 | 439 return long(q >> 16) |
440 | |
441 def ngtype(self, q): | |
442 return int(q & 0xFFFF) | |
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443 |
2072 | 444 def offset_type(self, offset, type): |
445 return long(long(offset) << 16 | type) | |
446 | |
2079 | 447 def loadindex(self, start, end): |
448 """load a block of indexes all at once from the lazy parser""" | |
449 if isinstance(self.index, lazyindex): | |
450 self.index.p.loadindex(start, end) | |
451 | |
2072 | 452 def loadindexmap(self): |
453 """loads both the map and the index from the lazy parser""" | |
454 if isinstance(self.index, lazyindex): | |
455 p = self.index.p | |
2079 | 456 p.loadindex() |
457 self.nodemap = p.map | |
458 | |
459 def loadmap(self): | |
460 """loads the map from the lazy parser""" | |
461 if isinstance(self.nodemap, lazymap): | |
462 self.nodemap.p.loadmap() | |
463 self.nodemap = self.nodemap.p.map | |
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464 |
2073 | 465 def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
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466 def tip(self): return self.node(len(self.index) - 1) |
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467 def count(self): return len(self.index) |
2072 | 468 def node(self, rev): |
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469 return rev == nullrev and nullid or self.index[rev][-1] |
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470 def rev(self, node): |
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471 try: |
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472 return self.nodemap[node] |
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473 except KeyError: |
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474 raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) |
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475 def linkrev(self, node): |
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476 return (node == nullid) and nullrev or self.index[self.rev(node)][-4] |
2 | 477 def parents(self, node): |
478 if node == nullid: return (nullid, nullid) | |
2072 | 479 r = self.rev(node) |
480 d = self.index[r][-3:-1] | |
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481 if self.version == REVLOGV0: |
2072 | 482 return d |
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483 return (self.node(d[0]), self.node(d[1])) |
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484 def parentrevs(self, rev): |
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485 if rev == nullrev: |
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486 return (nullrev, nullrev) |
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487 d = self.index[rev][-3:-1] |
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488 if self.version == REVLOGV0: |
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489 return (self.rev(d[0]), self.rev(d[1])) |
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490 return d |
2072 | 491 def start(self, rev): |
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492 if rev == nullrev: |
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493 return 0 |
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494 if self.version != REVLOGV0: |
2072 | 495 return self.ngoffset(self.index[rev][0]) |
496 return self.index[rev][0] | |
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497 |
2072 | 498 def end(self, rev): return self.start(rev) + self.length(rev) |
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499 |
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500 def size(self, rev): |
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501 """return the length of the uncompressed text for a given revision""" |
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502 if rev == nullrev: |
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503 return 0 |
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504 l = -1 |
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505 if self.version != REVLOGV0: |
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506 l = self.index[rev][2] |
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507 if l >= 0: |
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508 return l |
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509 |
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510 t = self.revision(self.node(rev)) |
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511 return len(t) |
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512 |
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513 # alternate implementation, The advantage to this code is it |
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514 # will be faster for a single revision. But, the results are not |
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515 # cached, so finding the size of every revision will be slower. |
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516 """ |
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517 if self.cache and self.cache[1] == rev: |
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518 return len(self.cache[2]) |
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519 |
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520 base = self.base(rev) |
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521 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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522 base = self.cache[1] |
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523 text = self.cache[2] |
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524 else: |
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525 text = self.revision(self.node(base)) |
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526 |
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527 l = len(text) |
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528 for x in xrange(base + 1, rev + 1): |
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529 l = mdiff.patchedsize(l, self.chunk(x)) |
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530 return l |
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531 """ |
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532 |
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533 def length(self, rev): |
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534 if rev == nullrev: |
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535 return 0 |
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536 else: |
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537 return self.index[rev][1] |
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538 def base(self, rev): |
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539 if (rev == nullrev): |
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540 return nullrev |
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541 else: |
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542 return self.index[rev][-5] |
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543 |
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544 def reachable(self, node, stop=None): |
3683 | 545 """return a hash of all nodes ancestral to a given node, including |
546 the node itself, stopping when stop is matched""" | |
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547 reachable = {} |
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548 visit = [node] |
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549 reachable[node] = 1 |
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550 if stop: |
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551 stopn = self.rev(stop) |
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552 else: |
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553 stopn = 0 |
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554 while visit: |
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555 n = visit.pop(0) |
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556 if n == stop: |
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557 continue |
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558 if n == nullid: |
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559 continue |
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560 for p in self.parents(n): |
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561 if self.rev(p) < stopn: |
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562 continue |
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563 if p not in reachable: |
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564 reachable[p] = 1 |
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565 visit.append(p) |
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566 return reachable |
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567 |
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568 def nodesbetween(self, roots=None, heads=None): |
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569 """Return a tuple containing three elements. Elements 1 and 2 contain |
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570 a final list bases and heads after all the unreachable ones have been |
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571 pruned. Element 0 contains a topologically sorted list of all |
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572 |
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573 nodes that satisfy these constraints: |
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574 1. All nodes must be descended from a node in roots (the nodes on |
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575 roots are considered descended from themselves). |
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576 2. All nodes must also be ancestors of a node in heads (the nodes in |
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577 heads are considered to be their own ancestors). |
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578 |
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579 If roots is unspecified, nullid is assumed as the only root. |
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580 If heads is unspecified, it is taken to be the output of the |
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581 heads method (i.e. a list of all nodes in the repository that |
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582 have no children).""" |
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583 nonodes = ([], [], []) |
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584 if roots is not None: |
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585 roots = list(roots) |
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586 if not roots: |
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587 return nonodes |
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588 lowestrev = min([self.rev(n) for n in roots]) |
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589 else: |
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590 roots = [nullid] # Everybody's a descendent of nullid |
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591 lowestrev = nullrev |
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592 if (lowestrev == nullrev) and (heads is None): |
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593 # We want _all_ the nodes! |
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594 return ([self.node(r) for r in xrange(0, self.count())], |
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595 [nullid], list(self.heads())) |
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596 if heads is None: |
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597 # All nodes are ancestors, so the latest ancestor is the last |
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598 # node. |
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599 highestrev = self.count() - 1 |
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600 # Set ancestors to None to signal that every node is an ancestor. |
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601 ancestors = None |
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602 # Set heads to an empty dictionary for later discovery of heads |
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603 heads = {} |
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604 else: |
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605 heads = list(heads) |
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606 if not heads: |
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607 return nonodes |
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608 ancestors = {} |
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609 # Turn heads into a dictionary so we can remove 'fake' heads. |
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610 # Also, later we will be using it to filter out the heads we can't |
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611 # find from roots. |
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612 heads = dict.fromkeys(heads, 0) |
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613 # Start at the top and keep marking parents until we're done. |
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nodesbetween: fix a bug with duplicate heads
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614 nodestotag = heads.keys() |
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615 # Remember where the top was so we can use it as a limit later. |
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616 highestrev = max([self.rev(n) for n in nodestotag]) |
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617 while nodestotag: |
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618 # grab a node to tag |
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619 n = nodestotag.pop() |
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620 # Never tag nullid |
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621 if n == nullid: |
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622 continue |
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623 # A node's revision number represents its place in a |
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624 # topologically sorted list of nodes. |
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625 r = self.rev(n) |
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626 if r >= lowestrev: |
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627 if n not in ancestors: |
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628 # If we are possibly a descendent of one of the roots |
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629 # and we haven't already been marked as an ancestor |
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630 ancestors[n] = 1 # Mark as ancestor |
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631 # Add non-nullid parents to list of nodes to tag. |
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632 nodestotag.extend([p for p in self.parents(n) if |
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633 p != nullid]) |
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634 elif n in heads: # We've seen it before, is it a fake head? |
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635 # So it is, real heads should not be the ancestors of |
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636 # any other heads. |
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637 heads.pop(n) |
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Fix small bug in nodesbetween if heads is [nullid].
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638 if not ancestors: |
1463
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Fix to handle case of empty list for roots or heads in nodesbetween.
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639 return nonodes |
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640 # Now that we have our set of ancestors, we want to remove any |
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641 # roots that are not ancestors. |
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642 |
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643 # If one of the roots was nullid, everything is included anyway. |
3578
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Define and use nullrev (revision of nullid) instead of -1.
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parents:
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644 if lowestrev > nullrev: |
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645 # But, since we weren't, let's recompute the lowest rev to not |
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646 # include roots that aren't ancestors. |
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647 |
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648 # Filter out roots that aren't ancestors of heads |
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649 roots = [n for n in roots if n in ancestors] |
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650 # Recompute the lowest revision |
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651 if roots: |
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652 lowestrev = min([self.rev(n) for n in roots]) |
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653 else: |
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654 # No more roots? Return empty list |
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655 return nonodes |
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656 else: |
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657 # We are descending from nullid, and don't need to care about |
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658 # any other roots. |
3578
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Define and use nullrev (revision of nullid) instead of -1.
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659 lowestrev = nullrev |
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660 roots = [nullid] |
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661 # Transform our roots list into a 'set' (i.e. a dictionary where the |
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662 # values don't matter. |
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663 descendents = dict.fromkeys(roots, 1) |
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664 # Also, keep the original roots so we can filter out roots that aren't |
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665 # 'real' roots (i.e. are descended from other roots). |
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666 roots = descendents.copy() |
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667 # Our topologically sorted list of output nodes. |
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668 orderedout = [] |
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669 # Don't start at nullid since we don't want nullid in our output list, |
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670 # and if nullid shows up in descedents, empty parents will look like |
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671 # they're descendents. |
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672 for r in xrange(max(lowestrev, 0), highestrev + 1): |
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673 n = self.node(r) |
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674 isdescendent = False |
3578
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Define and use nullrev (revision of nullid) instead of -1.
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675 if lowestrev == nullrev: # Everybody is a descendent of nullid |
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676 isdescendent = True |
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677 elif n in descendents: |
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678 # n is already a descendent |
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679 isdescendent = True |
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680 # This check only needs to be done here because all the roots |
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681 # will start being marked is descendents before the loop. |
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682 if n in roots: |
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683 # If n was a root, check if it's a 'real' root. |
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684 p = tuple(self.parents(n)) |
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685 # If any of its parents are descendents, it's not a root. |
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686 if (p[0] in descendents) or (p[1] in descendents): |
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687 roots.pop(n) |
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688 else: |
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689 p = tuple(self.parents(n)) |
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690 # A node is a descendent if either of its parents are |
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691 # descendents. (We seeded the dependents list with the roots |
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692 # up there, remember?) |
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693 if (p[0] in descendents) or (p[1] in descendents): |
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694 descendents[n] = 1 |
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695 isdescendent = True |
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696 if isdescendent and ((ancestors is None) or (n in ancestors)): |
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697 # Only include nodes that are both descendents and ancestors. |
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698 orderedout.append(n) |
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699 if (ancestors is not None) and (n in heads): |
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700 # We're trying to figure out which heads are reachable |
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701 # from roots. |
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702 # Mark this head as having been reached |
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Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
703 heads[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
704 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
|
705 # 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
|
706 # 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
|
707 # 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
|
708 heads[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
709 # 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
|
710 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
|
711 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
|
712 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
|
713 roots = roots.keys() |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
714 assert orderedout |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
715 assert roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
716 assert heads |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
717 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
|
718 |
1551
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
719 def heads(self, start=None): |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
720 """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
|
721 |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
722 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
|
723 start will be returned |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
724 |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
725 """ |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
726 if start is None: |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
727 start = nullid |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
728 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
|
729 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
|
730 heads = {startrev: 1} |
1083 | 731 |
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
|
732 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
|
733 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
|
734 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
|
735 if p in reachable: |
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
736 reachable[r] = 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
|
737 heads[r] = 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
|
738 if p in heads: |
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 del heads[p] |
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 return [self.node(r) for r in heads] |
370 | 741 |
742 def children(self, node): | |
1083 | 743 """find the children of a given node""" |
370 | 744 c = [] |
745 p = self.rev(node) | |
746 for r in range(p + 1, self.count()): | |
3469
fd8f1110562c
fix errors spotted by pychecker
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3465
diff
changeset
|
747 for pr in self.parentrevs(r): |
3465
c6773b7ebee8
revlog.children: use parentrevs instead of parents
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3438
diff
changeset
|
748 if pr == p: |
c6773b7ebee8
revlog.children: use parentrevs instead of parents
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3438
diff
changeset
|
749 c.append(self.node(r)) |
370 | 750 return c |
515 | 751 |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
752 def _match(self, id): |
3210
7240f9e47144
correctly find the type of 'id' in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3153
diff
changeset
|
753 if isinstance(id, (long, int)): |
3152
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
754 # rev |
2650
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
|
755 return self.node(id) |
3438 | 756 if len(id) == 20: |
757 # possibly a binary node | |
758 # odds of a binary node being all hex in ASCII are 1 in 10**25 | |
759 try: | |
760 node = id | |
761 r = self.rev(node) # quick search the index | |
762 return node | |
763 except RevlogError: | |
764 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
|
765 try: |
3152
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
766 # str(rev) |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
767 rev = int(id) |
469 | 768 if str(rev) != id: raise ValueError |
769 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
|
770 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
|
771 return self.node(rev) |
469 | 772 except (ValueError, OverflowError): |
3152
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
773 pass |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
774 if len(id) == 40: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
775 try: |
3438 | 776 # a full hex nodeid? |
777 node = bin(id) | |
778 r = self.rev(node) | |
3153
4fe41a9e4591
optimize revlog.lookup when passed hex(node)[:...]
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3152
diff
changeset
|
779 return node |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
780 except TypeError: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
781 pass |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
782 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
783 def _partialmatch(self, id): |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
784 if len(id) < 40: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
785 try: |
3438 | 786 # hex(node)[:...] |
787 bin_id = bin(id[:len(id) & ~1]) # grab an even number of digits | |
788 node = None | |
789 for n in self.nodemap: | |
790 if n.startswith(bin_id) and hex(n).startswith(id): | |
791 if node is not None: | |
792 raise RevlogError(_("Ambiguous identifier")) | |
793 node = n | |
794 if node is not None: | |
795 return node | |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
796 except TypeError: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
797 pass |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
798 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
799 def lookup(self, id): |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
800 """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
|
801 - 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
|
802 - 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
|
803 """ |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
804 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
805 n = self._match(id) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
806 if n is not None: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
807 return n |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
808 n = self._partialmatch(id) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
809 if n: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
810 return n |
515 | 811 |
2801 | 812 raise RevlogError(_("No match found")) |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
813 |
2910
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
814 def cmp(self, node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
815 """compare text with a given file revision""" |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
816 p1, p2 = self.parents(node) |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
817 return hash(text, p1, p2) != node |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
818 |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
819 def makenode(self, node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
820 """calculate a file nodeid for text, descended or possibly |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
821 unchanged from node""" |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
822 |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
823 if self.cmp(node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
824 return hash(text, node, nullid) |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
825 return node |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
826 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
827 def diff(self, a, b): |
1083 | 828 """return a delta between two revisions""" |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
829 return mdiff.textdiff(a, b) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
830 |
73 | 831 def patches(self, t, pl): |
1083 | 832 """apply a list of patches to a string""" |
73 | 833 return mdiff.patches(t, pl) |
834 | |
2072 | 835 def chunk(self, rev, df=None, cachelen=4096): |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
836 start, length = self.start(rev), self.length(rev) |
2073 | 837 inline = self.inlinedata() |
838 if inline: | |
839 start += (rev + 1) * struct.calcsize(self.indexformat) | |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
840 end = start + length |
2072 | 841 def loadcache(df): |
842 cache_length = max(cachelen, length) # 4k | |
843 if not df: | |
2073 | 844 if inline: |
845 df = self.opener(self.indexfile) | |
846 else: | |
847 df = self.opener(self.datafile) | |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
848 df.seek(start) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
849 self.chunkcache = (start, df.read(cache_length)) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
850 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
851 if not self.chunkcache: |
2072 | 852 loadcache(df) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
853 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
854 cache_start = self.chunkcache[0] |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
855 cache_end = cache_start + len(self.chunkcache[1]) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
856 if start >= cache_start and end <= cache_end: |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
857 # it is cached |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
858 offset = start - cache_start |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
859 else: |
2072 | 860 loadcache(df) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
861 offset = 0 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
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862 |
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863 #def checkchunk(): |
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864 # df = self.opener(self.datafile) |
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865 # df.seek(start) |
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866 # return df.read(length) |
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867 #assert s == checkchunk() |
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868 return decompress(self.chunkcache[1][offset:offset + length]) |
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869 |
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870 def delta(self, node): |
1083 | 871 """return or calculate a delta between a node and its predecessor""" |
119
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872 r = self.rev(node) |
1941
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873 return self.revdiff(r - 1, r) |
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874 |
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875 def revdiff(self, rev1, rev2): |
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876 """return or calculate a delta between two revisions""" |
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877 b1 = self.base(rev1) |
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878 b2 = self.base(rev2) |
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879 if b1 == b2 and rev1 + 1 == rev2: |
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880 return self.chunk(rev2) |
119
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881 else: |
1941
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882 return self.diff(self.revision(self.node(rev1)), |
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883 self.revision(self.node(rev2))) |
119
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884 |
0
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885 def revision(self, node): |
1083 | 886 """return an uncompressed revision of a given""" |
36
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887 if node == nullid: return "" |
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888 if self.cache and self.cache[0] == node: return self.cache[2] |
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889 |
1083 | 890 # look up what we need to read |
0
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891 text = None |
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892 rev = self.rev(node) |
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893 base = self.base(rev) |
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894 |
2073 | 895 if self.inlinedata(): |
896 # we probably have the whole chunk cached | |
897 df = None | |
898 else: | |
899 df = self.opener(self.datafile) | |
2072 | 900 |
1083 | 901 # do we have useful data cached? |
0
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902 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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903 base = self.cache[1] |
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904 text = self.cache[2] |
2079 | 905 self.loadindex(base, rev + 1) |
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906 else: |
2079 | 907 self.loadindex(base, rev + 1) |
2072 | 908 text = self.chunk(base, df=df) |
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909 |
71
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910 bins = [] |
64 | 911 for r in xrange(base + 1, rev + 1): |
2072 | 912 bins.append(self.chunk(r, df=df)) |
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913 |
1941
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914 text = self.patches(text, bins) |
71
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915 |
1598
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916 p1, p2 = self.parents(node) |
26 | 917 if node != hash(text, p1, p2): |
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918 raise RevlogError(_("integrity check failed on %s:%d") |
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919 % (self.datafile, rev)) |
0
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920 |
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921 self.cache = (node, rev, text) |
515 | 922 return text |
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923 |
2075
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924 def checkinlinesize(self, tr, fp=None): |
2073 | 925 if not self.inlinedata(): |
926 return | |
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927 if not fp: |
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928 fp = self.opener(self.indexfile, 'r') |
2082
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Additional appendfile fixes for interleaved data/index files
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929 fp.seek(0, 2) |
2073 | 930 size = fp.tell() |
931 if size < 131072: | |
932 return | |
2084 | 933 trinfo = tr.find(self.indexfile) |
934 if trinfo == None: | |
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935 raise RevlogError(_("%s not found in the transaction") |
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|
936 % self.indexfile) |
2084 | 937 |
938 trindex = trinfo[2] | |
939 dataoff = self.start(trindex) | |
940 | |
941 tr.add(self.datafile, dataoff) | |
2073 | 942 df = self.opener(self.datafile, 'w') |
943 calc = struct.calcsize(self.indexformat) | |
944 for r in xrange(self.count()): | |
945 start = self.start(r) + (r + 1) * calc | |
946 length = self.length(r) | |
947 fp.seek(start) | |
948 d = fp.read(length) | |
949 df.write(d) | |
950 fp.close() | |
951 df.close() | |
2076
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952 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
2073 | 953 self.version &= ~(REVLOGNGINLINEDATA) |
954 if self.count(): | |
955 x = self.index[0] | |
956 e = struct.pack(self.indexformat, *x)[4:] | |
957 l = struct.pack(versionformat, self.version) | |
958 fp.write(l) | |
959 fp.write(e) | |
960 | |
961 for i in xrange(1, self.count()): | |
962 x = self.index[i] | |
963 e = struct.pack(self.indexformat, *x) | |
964 fp.write(e) | |
965 | |
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966 # if we don't call rename, the temp file will never replace the |
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967 # real index |
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968 fp.rename() |
2084 | 969 |
970 tr.replace(self.indexfile, trindex * calc) | |
2073 | 971 self.chunkcache = None |
972 | |
644 | 973 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
1083 | 974 """add a revision to the log |
975 | |
976 text - the revision data to add | |
977 transaction - the transaction object used for rollback | |
978 link - the linkrev data to add | |
979 p1, p2 - the parent nodeids of the revision | |
980 d - an optional precomputed delta | |
981 """ | |
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982 if not self.inlinedata(): |
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983 dfh = self.opener(self.datafile, "a") |
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984 else: |
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985 dfh = None |
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986 ifh = self.opener(self.indexfile, "a+") |
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987 return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) |
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988 |
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989 def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): |
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990 if text is None: text = "" |
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991 if p1 is None: p1 = self.tip() |
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992 if p2 is None: p2 = nullid |
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993 |
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994 node = hash(text, p1, p2) |
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995 |
301 | 996 if node in self.nodemap: |
997 return node | |
998 | |
0
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999 n = self.count() |
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1000 t = n - 1 |
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1001 |
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1002 if n: |
64 | 1003 base = self.base(t) |
1004 start = self.start(base) | |
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1005 end = self.end(t) |
644 | 1006 if not d: |
1007 prev = self.revision(self.tip()) | |
3333
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1008 d = self.diff(prev, text) |
98 | 1009 data = compress(d) |
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1010 l = len(data[1]) + len(data[0]) |
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1011 dist = end - start + l |
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1012 |
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1013 # full versions are inserted when the needed deltas |
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1014 # become comparable to the uncompressed text |
64 | 1015 if not n or dist > len(text) * 2: |
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1016 data = compress(text) |
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1017 l = len(data[1]) + len(data[0]) |
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1018 base = n |
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1019 else: |
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1020 base = self.base(t) |
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1021 |
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1022 offset = 0 |
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1023 if t >= 0: |
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1024 offset = self.end(t) |
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1025 |
2142
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1026 if self.version == REVLOGV0: |
2072 | 1027 e = (offset, l, base, link, p1, p2, node) |
1028 else: | |
1029 e = (self.offset_type(offset, 0), l, len(text), | |
1030 base, link, self.rev(p1), self.rev(p2), node) | |
515 | 1031 |
0
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1032 self.index.append(e) |
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1033 self.nodemap[node] = n |
2072 | 1034 entry = struct.pack(self.indexformat, *e) |
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1035 |
2073 | 1036 if not self.inlinedata(): |
1037 transaction.add(self.datafile, offset) | |
1038 transaction.add(self.indexfile, n * len(entry)) | |
1039 if data[0]: | |
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1040 dfh.write(data[0]) |
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1041 dfh.write(data[1]) |
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1042 dfh.flush() |
2073 | 1043 else: |
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1044 ifh.seek(0, 2) |
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1045 transaction.add(self.indexfile, ifh.tell(), self.count() - 1) |
2072 | 1046 |
2142
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1047 if len(self.index) == 1 and self.version != REVLOGV0: |
2072 | 1048 l = struct.pack(versionformat, self.version) |
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1049 ifh.write(l) |
2072 | 1050 entry = entry[4:] |
1051 | |
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1052 ifh.write(entry) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1053 |
2073 | 1054 if self.inlinedata(): |
3390
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1055 ifh.write(data[0]) |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1056 ifh.write(data[1]) |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1057 self.checkinlinesize(transaction, ifh) |
2073 | 1058 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1059 self.cache = (node, n, text) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1060 return node |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1061 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1062 def ancestor(self, a, b): |
1083 | 1063 """calculate the least common ancestor of nodes a and b""" |
2081
416d8b2a75b8
Speedup revlog.ancestors for the linear case
Chris Mason <mason@suse.com>
parents:
2080
diff
changeset
|
1064 |
3139
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
parents:
3136
diff
changeset
|
1065 def parents(rev): |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
diff
changeset
|
1066 return [p for p in self.parentrevs(rev) if p != nullrev] |
515 | 1067 |
3139
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
parents:
3136
diff
changeset
|
1068 c = ancestor.ancestor(self.rev(a), self.rev(b), parents) |
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
parents:
3136
diff
changeset
|
1069 if c is None: |
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
parents:
3136
diff
changeset
|
1070 return nullid |
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
parents:
3136
diff
changeset
|
1071 |
1fd1cdcc4200
Switch revlog.ancestor to use revisions rather than nodeids
Matt Mackall <mpm@selenic.com>
parents:
3136
diff
changeset
|
1072 return self.node(c) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1073 |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1074 def group(self, nodelist, lookup, infocollect=None): |
1083 | 1075 """calculate a delta group |
46 | 1076 |
1083 | 1077 Given a list of changeset revs, return a set of deltas and |
1078 metadata corresponding to nodes. the first delta is | |
1079 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1080 have this parent as it has all history before these | |
1081 changesets. parent is parent[0] | |
1082 """ | |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1083 revs = [self.rev(n) for n in nodelist] |
46 | 1084 |
1085 # if we don't have any revisions touched by these changesets, bail | |
192 | 1086 if not revs: |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1087 yield changegroup.closechunk() |
192 | 1088 return |
46 | 1089 |
1090 # add the parent of the first rev | |
1091 p = self.parents(self.node(revs[0]))[0] | |
1092 revs.insert(0, self.rev(p)) | |
1093 | |
1094 # build deltas | |
71
47c9a869adee
Add mdiff.patches to speed up applying thousands of patches to the manifest
mpm@selenic.com
parents:
67
diff
changeset
|
1095 for d in xrange(0, len(revs) - 1): |
46 | 1096 a, b = revs[d], revs[d + 1] |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1097 nb = self.node(b) |
192 | 1098 |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1099 if infocollect is not None: |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1100 infocollect(nb) |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1101 |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
1102 d = self.revdiff(a, b) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1103 p = self.parents(nb) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1104 meta = nb + p[0] + p[1] + lookup(nb) |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1105 yield changegroup.genchunk("%s%s" % (meta, d)) |
46 | 1106 |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1107 yield changegroup.closechunk() |
192 | 1108 |
1062 | 1109 def addgroup(self, revs, linkmapper, transaction, unique=0): |
1083 | 1110 """ |
1111 add a delta group | |
46 | 1112 |
1083 | 1113 given a set of deltas, add them to the revision log. the |
1114 first delta is against its parent, which should be in our | |
1115 log, the rest are against the previous delta. | |
1116 """ | |
1117 | |
1118 #track the base of the current delta log | |
46 | 1119 r = self.count() |
1120 t = r - 1 | |
2002
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1981
diff
changeset
|
1121 node = None |
515 | 1122 |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
diff
changeset
|
1123 base = prev = nullrev |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1124 start = end = textlen = 0 |
46 | 1125 if r: |
1126 end = self.end(t) | |
1127 | |
2072 | 1128 ifh = self.opener(self.indexfile, "a+") |
2077
4d0700ae0991
Fix inlined revlogs to seek to eof after opening "a+"
mason@suse.com
parents:
2076
diff
changeset
|
1129 ifh.seek(0, 2) |
2084 | 1130 transaction.add(self.indexfile, ifh.tell(), self.count()) |
2073 | 1131 if self.inlinedata(): |
1132 dfh = None | |
1133 else: | |
1134 transaction.add(self.datafile, end) | |
1135 dfh = self.opener(self.datafile, "a") | |
46 | 1136 |
1137 # loop through our set of deltas | |
192 | 1138 chain = None |
1139 for chunk in revs: | |
1140 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
94 | 1141 link = linkmapper(cs) |
77 | 1142 if node in self.nodemap: |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1143 # this can happen if two branches make the same change |
1218
cde6818e082a
Add preliminary support for the bundle and unbundle commands
mpm@selenic.com
parents:
1214
diff
changeset
|
1144 # if unique: |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1400
diff
changeset
|
1145 # raise RevlogError(_("already have %s") % hex(node[:4])) |
653
94cdd02792b5
Fix corruption resulting from skipping parts of a revision group
Matt Mackall <mpm@selenic.com>
parents:
651
diff
changeset
|
1146 chain = node |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1147 continue |
192 | 1148 delta = chunk[80:] |
1149 | |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1150 for p in (p1, p2): |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1151 if not p in self.nodemap: |
2295
9c15f85e61b1
fix a typo in an error message
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
2289
diff
changeset
|
1152 raise RevlogError(_("unknown parent %s") % short(p)) |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1153 |
192 | 1154 if not chain: |
1155 # retrieve the parent revision of the delta chain | |
1156 chain = p1 | |
1157 if not chain in self.nodemap: | |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1400
diff
changeset
|
1158 raise RevlogError(_("unknown base %s") % short(chain[:4])) |
46 | 1159 |
1160 # full versions are inserted when the needed deltas become | |
1161 # comparable to the uncompressed text or when the previous | |
1162 # version is not the one we have a delta against. We use | |
1163 # the size of the previous full rev as a proxy for the | |
1164 # current size. | |
1165 | |
1166 if chain == prev: | |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
1167 tempd = compress(delta) |
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
1168 cdelta = tempd[0] + tempd[1] |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1169 textlen = mdiff.patchedsize(textlen, delta) |
46 | 1170 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1171 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
46 | 1172 # flush our writes here so we can read it in revision |
2072 | 1173 if dfh: |
1174 dfh.flush() | |
46 | 1175 ifh.flush() |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1176 text = self.revision(chain) |
73 | 1177 text = self.patches(text, [delta]) |
3390
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1178 chk = self._addrevision(text, transaction, link, p1, p2, None, |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1179 ifh, dfh) |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1180 if not dfh and not self.inlinedata(): |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1181 # addrevision switched from inline to conventional |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1182 # reopen the index |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1183 dfh = self.opener(self.datafile, "a") |
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1184 ifh = self.opener(self.indexfile, "a") |
46 | 1185 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
|
1186 raise RevlogError(_("consistency error adding group")) |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1187 textlen = len(text) |
46 | 1188 else: |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
1189 if self.version == REVLOGV0: |
2072 | 1190 e = (end, len(cdelta), base, link, p1, p2, node) |
1191 else: | |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1192 e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
2072 | 1193 link, self.rev(p1), self.rev(p2), node) |
46 | 1194 self.index.append(e) |
1195 self.nodemap[node] = r | |
2073 | 1196 if self.inlinedata(): |
1197 ifh.write(struct.pack(self.indexformat, *e)) | |
1198 ifh.write(cdelta) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
1199 self.checkinlinesize(transaction, ifh) |
2073 | 1200 if not self.inlinedata(): |
1201 dfh = self.opener(self.datafile, "a") | |
1202 ifh = self.opener(self.indexfile, "a") | |
1203 else: | |
1204 dfh.write(cdelta) | |
1205 ifh.write(struct.pack(self.indexformat, *e)) | |
46 | 1206 |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1207 t, r, chain, prev = r, r + 1, node, node |
1749
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1711
diff
changeset
|
1208 base = self.base(t) |
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1711
diff
changeset
|
1209 start = self.start(base) |
46 | 1210 end = self.end(t) |
1211 | |
1212 return node | |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1213 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1214 def strip(self, rev, minlink): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1215 if self.count() == 0 or rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1216 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1217 |
2072 | 1218 if isinstance(self.index, lazyindex): |
1219 self.loadindexmap() | |
1220 | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1221 # When stripping away a revision, we need to make sure it |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1222 # does not actually belong to an older changeset. |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1223 # The minlink parameter defines the oldest revision |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1224 # we're allowed to strip away. |
2072 | 1225 while minlink > self.index[rev][-4]: |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1226 rev += 1 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1227 if rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1228 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1229 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1230 # first truncate the files on disk |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1231 end = self.start(rev) |
2073 | 1232 if not self.inlinedata(): |
1233 df = self.opener(self.datafile, "a") | |
1234 df.truncate(end) | |
1235 end = rev * struct.calcsize(self.indexformat) | |
1236 else: | |
1237 end += rev * struct.calcsize(self.indexformat) | |
2072 | 1238 |
1239 indexf = self.opener(self.indexfile, "a") | |
1240 indexf.truncate(end) | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1241 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1242 # then reset internal state in memory to forget those revisions |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1243 self.cache = None |
1711 | 1244 self.chunkcache = None |
2072 | 1245 for x in xrange(rev, self.count()): |
1246 del self.nodemap[self.node(x)] | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1247 |
2072 | 1248 del self.index[rev:] |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1249 |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1250 def checksize(self): |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1251 expected = 0 |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1252 if self.count(): |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1253 expected = self.end(self.count() - 1) |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1254 |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1255 try: |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1256 f = self.opener(self.datafile) |
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1257 f.seek(0, 2) |
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1258 actual = f.tell() |
1667
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1259 dd = actual - expected |
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1260 except IOError, inst: |
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1261 if inst.errno != errno.ENOENT: |
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1262 raise |
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1263 dd = 0 |
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1264 |
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1265 try: |
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1266 f = self.opener(self.indexfile) |
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1267 f.seek(0, 2) |
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1268 actual = f.tell() |
2072 | 1269 s = struct.calcsize(self.indexformat) |
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1270 i = actual / s |
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1271 di = actual - (i * s) |
2073 | 1272 if self.inlinedata(): |
1273 databytes = 0 | |
1274 for r in xrange(self.count()): | |
1275 databytes += self.length(r) | |
1276 dd = 0 | |
1277 di = actual - self.count() * s - databytes | |
1667
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1278 except IOError, inst: |
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1279 if inst.errno != errno.ENOENT: |
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1280 raise |
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1281 di = 0 |
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1282 |
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1283 return (dd, di) |
1494
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1284 |
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1285 |