Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/revlog.py @ 4972:8d0cf46e0dc6
revlog: add revlogio interface
This lets us separate the logic for different on-disk revlog formats from
the main revlog logic.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Mon, 23 Jul 2007 20:44:07 -0500 |
parents | 3e6dae278c99 |
children | a386a6e4fe46 |
rev | line source |
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1083 | 1 """ |
2 revlog.py - storage back-end for mercurial | |
3 | |
4 This provides efficient delta storage with O(1) retrieve and append | |
5 and O(changes) merge between branches | |
6 | |
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7 Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
1083 | 8 |
9 This software may be used and distributed according to the terms | |
10 of the GNU General Public License, incorporated herein by reference. | |
11 """ | |
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12 |
1089 | 13 from node import * |
3893 | 14 from i18n import _ |
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15 import binascii, changegroup, errno, ancestor, mdiff, os |
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16 import sha, struct, util, zlib |
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17 |
2072 | 18 # revlog version strings |
19 REVLOGV0 = 0 | |
20 REVLOGNG = 1 | |
21 | |
2073 | 22 # revlog flags |
23 REVLOGNGINLINEDATA = (1 << 16) | |
2222
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24 REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA |
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25 |
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26 REVLOG_DEFAULT_FORMAT = REVLOGNG |
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27 REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
2073 | 28 |
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29 def hash(text, p1, p2): |
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30 """generate a hash from the given text and its parent hashes |
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31 |
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32 This hash combines both the current file contents and its history |
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33 in a manner that makes it easy to distinguish nodes with the same |
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34 content in the revision graph. |
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35 """ |
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36 l = [p1, p2] |
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37 l.sort() |
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38 s = sha.new(l[0]) |
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39 s.update(l[1]) |
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40 s.update(text) |
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41 return s.digest() |
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42 |
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43 def compress(text): |
1083 | 44 """ generate a possibly-compressed representation of text """ |
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45 if not text: return ("", text) |
112 | 46 if len(text) < 44: |
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47 if text[0] == '\0': return ("", text) |
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48 return ('u', text) |
112 | 49 bin = zlib.compress(text) |
50 if len(bin) > len(text): | |
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51 if text[0] == '\0': return ("", text) |
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52 return ('u', text) |
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53 return ("", bin) |
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54 |
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55 def decompress(bin): |
1083 | 56 """ decompress the given input """ |
112 | 57 if not bin: return bin |
58 t = bin[0] | |
59 if t == '\0': return bin | |
60 if t == 'x': return zlib.decompress(bin) | |
61 if t == 'u': return bin[1:] | |
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62 raise RevlogError(_("unknown compression type %r") % t) |
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63 |
2072 | 64 indexformatv0 = ">4l20s20s20s" |
2079 | 65 v0shaoffset = 56 |
2072 | 66 # index ng: |
67 # 6 bytes offset | |
68 # 2 bytes flags | |
69 # 4 bytes compressed length | |
70 # 4 bytes uncompressed length | |
71 # 4 bytes: base rev | |
72 # 4 bytes link rev | |
73 # 4 bytes parent 1 rev | |
74 # 4 bytes parent 2 rev | |
75 # 32 bytes: nodeid | |
76 indexformatng = ">Qiiiiii20s12x" | |
2079 | 77 ngshaoffset = 32 |
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78 versionformat = ">I" |
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79 |
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80 class lazyparser(object): |
1083 | 81 """ |
82 this class avoids the need to parse the entirety of large indices | |
83 """ | |
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84 |
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85 # lazyparser is not safe to use on windows if win32 extensions not |
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86 # available. it keeps file handle open, which make it not possible |
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87 # to break hardlinks on local cloned repos. |
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88 safe_to_use = os.name != 'nt' or (not util.is_win_9x() and |
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89 hasattr(util, 'win32api')) |
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90 |
2079 | 91 def __init__(self, dataf, size, indexformat, shaoffset): |
92 self.dataf = dataf | |
93 self.format = indexformat | |
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94 self.s = struct.calcsize(indexformat) |
2072 | 95 self.indexformat = indexformat |
2079 | 96 self.datasize = size |
97 self.l = size/self.s | |
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98 self.index = [None] * self.l |
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99 self.map = {nullid: nullrev} |
2079 | 100 self.allmap = 0 |
323 | 101 self.all = 0 |
2079 | 102 self.mapfind_count = 0 |
103 self.shaoffset = shaoffset | |
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104 |
2079 | 105 def loadmap(self): |
106 """ | |
107 during a commit, we need to make sure the rev being added is | |
108 not a duplicate. This requires loading the entire index, | |
109 which is fairly slow. loadmap can load up just the node map, | |
110 which takes much less time. | |
111 """ | |
112 if self.allmap: return | |
113 end = self.datasize | |
114 self.allmap = 1 | |
115 cur = 0 | |
116 count = 0 | |
117 blocksize = self.s * 256 | |
118 self.dataf.seek(0) | |
119 while cur < end: | |
120 data = self.dataf.read(blocksize) | |
121 off = 0 | |
122 for x in xrange(256): | |
123 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
124 self.map[n] = count | |
125 count += 1 | |
126 if count >= self.l: | |
127 break | |
128 off += self.s | |
129 cur += blocksize | |
130 | |
131 def loadblock(self, blockstart, blocksize, data=None): | |
323 | 132 if self.all: return |
2079 | 133 if data is None: |
134 self.dataf.seek(blockstart) | |
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135 if blockstart + blocksize > self.datasize: |
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136 # the revlog may have grown since we've started running, |
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137 # but we don't have space in self.index for more entries. |
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138 # limit blocksize so that we don't get too much data. |
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139 blocksize = max(self.datasize - blockstart, 0) |
2079 | 140 data = self.dataf.read(blocksize) |
141 lend = len(data) / self.s | |
142 i = blockstart / self.s | |
143 off = 0 | |
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144 # lazyindex supports __delitem__ |
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145 if lend > len(self.index) - i: |
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146 lend = len(self.index) - i |
2079 | 147 for x in xrange(lend): |
148 if self.index[i + x] == None: | |
149 b = data[off : off + self.s] | |
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150 self.index[i + x] = b |
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151 n = b[self.shaoffset:self.shaoffset + 20] |
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152 self.map[n] = i + x |
2079 | 153 off += self.s |
154 | |
155 def findnode(self, node): | |
156 """search backwards through the index file for a specific node""" | |
157 if self.allmap: return None | |
158 | |
159 # hg log will cause many many searches for the manifest | |
160 # nodes. After we get called a few times, just load the whole | |
161 # thing. | |
162 if self.mapfind_count > 8: | |
163 self.loadmap() | |
164 if node in self.map: | |
165 return node | |
166 return None | |
167 self.mapfind_count += 1 | |
168 last = self.l - 1 | |
169 while self.index[last] != None: | |
170 if last == 0: | |
171 self.all = 1 | |
172 self.allmap = 1 | |
173 return None | |
174 last -= 1 | |
175 end = (last + 1) * self.s | |
176 blocksize = self.s * 256 | |
177 while end >= 0: | |
178 start = max(end - blocksize, 0) | |
179 self.dataf.seek(start) | |
180 data = self.dataf.read(end - start) | |
181 findend = end - start | |
182 while True: | |
183 # we're searching backwards, so weh have to make sure | |
184 # we don't find a changeset where this node is a parent | |
185 off = data.rfind(node, 0, findend) | |
186 findend = off | |
187 if off >= 0: | |
188 i = off / self.s | |
189 off = i * self.s | |
190 n = data[off + self.shaoffset:off + self.shaoffset + 20] | |
191 if n == node: | |
192 self.map[n] = i + start / self.s | |
193 return node | |
194 else: | |
195 break | |
196 end -= blocksize | |
197 return None | |
198 | |
199 def loadindex(self, i=None, end=None): | |
200 if self.all: return | |
201 all = False | |
202 if i == None: | |
203 blockstart = 0 | |
204 blocksize = (512 / self.s) * self.s | |
205 end = self.datasize | |
206 all = True | |
323 | 207 else: |
2079 | 208 if end: |
209 blockstart = i * self.s | |
210 end = end * self.s | |
211 blocksize = end - blockstart | |
212 else: | |
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213 blockstart = (i & ~63) * self.s |
2079 | 214 blocksize = self.s * 64 |
215 end = blockstart + blocksize | |
216 while blockstart < end: | |
217 self.loadblock(blockstart, blocksize) | |
218 blockstart += blocksize | |
219 if all: self.all = True | |
515 | 220 |
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221 class lazyindex(object): |
1083 | 222 """a lazy version of the index array""" |
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223 def __init__(self, parser): |
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224 self.p = parser |
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225 def __len__(self): |
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226 return len(self.p.index) |
115 | 227 def load(self, pos): |
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228 if pos < 0: |
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229 pos += len(self.p.index) |
2079 | 230 self.p.loadindex(pos) |
115 | 231 return self.p.index[pos] |
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232 def __getitem__(self, pos): |
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233 ret = self.p.index[pos] or self.load(pos) |
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234 if isinstance(ret, str): |
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235 ret = struct.unpack(self.p.indexformat, ret) |
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236 return ret |
2072 | 237 def __setitem__(self, pos, item): |
238 self.p.index[pos] = item | |
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239 def __delitem__(self, pos): |
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240 del self.p.index[pos] |
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241 def append(self, e): |
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242 self.p.index.append(e) |
515 | 243 |
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244 class lazymap(object): |
1083 | 245 """a lazy version of the node map""" |
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246 def __init__(self, parser): |
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247 self.p = parser |
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248 def load(self, key): |
2079 | 249 n = self.p.findnode(key) |
250 if n == None: | |
1214 | 251 raise KeyError(key) |
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252 def __contains__(self, key): |
2079 | 253 if key in self.p.map: |
254 return True | |
255 self.p.loadmap() | |
323 | 256 return key in self.p.map |
97 | 257 def __iter__(self): |
469 | 258 yield nullid |
97 | 259 for i in xrange(self.p.l): |
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260 ret = self.p.index[i] |
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261 if not ret: |
2079 | 262 self.p.loadindex(i) |
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263 ret = self.p.index[i] |
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264 if isinstance(ret, str): |
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265 ret = struct.unpack(self.p.indexformat, ret) |
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266 yield ret[-1] |
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267 def __getitem__(self, key): |
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268 try: |
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269 return self.p.map[key] |
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270 except KeyError: |
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271 try: |
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272 self.load(key) |
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273 return self.p.map[key] |
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274 except KeyError: |
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275 raise KeyError("node " + hex(key)) |
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276 def __setitem__(self, key, val): |
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277 self.p.map[key] = val |
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278 def __delitem__(self, key): |
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279 del self.p.map[key] |
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280 |
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281 class RevlogError(Exception): pass |
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282 class LookupError(RevlogError): pass |
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283 |
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284 def getoffset(q): |
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285 if q & 0xFFFF: |
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286 raise RevlogError(_('incompatible revision flag %x') % q) |
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287 return int(q >> 16) |
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288 |
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289 def gettype(q): |
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290 return int(q & 0xFFFF) |
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291 |
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292 def offset_type(offset, type): |
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293 return long(long(offset) << 16 | type) |
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294 |
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295 class revlogoldio(object): |
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296 def __init__(self): |
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297 self.chunkcache = None |
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298 |
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299 def parseindex(self, fp, st, inline): |
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300 s = struct.calcsize(indexformatv0) |
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301 index = [] |
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302 nodemap = {nullid: nullrev} |
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303 n = 0 |
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304 leftover = None |
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305 while True: |
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306 if st: |
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307 data = fp.read(65536) |
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308 else: |
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309 # hack for httprangereader, it doesn't do partial reads well |
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310 data = fp.read() |
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311 if not data: |
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312 break |
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313 if leftover: |
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314 data = leftover + data |
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315 leftover = None |
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316 off = 0 |
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317 l = len(data) |
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318 while off < l: |
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319 if l - off < s: |
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320 leftover = data[off:] |
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321 break |
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322 cur = data[off:off + s] |
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323 off += s |
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324 e = struct.unpack(indexformatv0, cur) |
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325 index.append(e) |
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326 nodemap[e[-1]] = n |
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327 n += 1 |
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328 if not st: |
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329 break |
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330 |
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331 return index, nodemap |
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332 |
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333 class revlogio(object): |
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334 def __init__(self): |
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335 self.chunkcache = None |
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336 |
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337 def parseindex(self, fp, st, inline): |
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338 if (lazyparser.safe_to_use and not inline and |
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339 st and st.st_size > 10000): |
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340 # big index, let's parse it on demand |
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341 parser = lazyparser(fp, st.st_size, indexformatng, ngshaoffset) |
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342 index = lazyindex(parser) |
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343 nodemap = lazymap(parser) |
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344 e = list(index[0]) |
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345 type = gettype(e[0]) |
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346 e[0] = offset_type(0, type) |
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347 index[0] = e |
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348 return index, nodemap |
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349 |
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350 s = struct.calcsize(indexformatng) |
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351 index = [] |
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352 nodemap = {nullid: nullrev} |
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353 n = 0 |
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354 leftover = None |
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355 while True: |
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356 if st: |
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357 data = fp.read(65536) |
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358 else: |
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359 # hack for httprangereader, it doesn't do partial reads well |
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360 data = fp.read() |
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361 if not data: |
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362 break |
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363 if n == 0 and inline: |
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364 # cache the first chunk |
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365 self.chunkcache = (0, data) |
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366 if leftover: |
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367 data = leftover + data |
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368 leftover = None |
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369 off = 0 |
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370 l = len(data) |
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371 while off < l: |
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372 if l - off < s: |
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373 leftover = data[off:] |
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374 break |
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375 cur = data[off:off + s] |
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376 off += s |
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377 e = struct.unpack(indexformatng, cur) |
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378 index.append(e) |
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379 nodemap[e[-1]] = n |
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380 n += 1 |
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381 if inline: |
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382 if e[1] < 0: |
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383 break |
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384 off += e[1] |
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385 if off > l: |
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386 # some things don't seek well, just read it |
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387 fp.read(off - l) |
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388 break |
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389 if not st: |
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390 break |
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391 |
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392 e = list(index[0]) |
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393 type = gettype(e[0]) |
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394 e[0] = offset_type(0, type) |
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395 index[0] = e |
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396 |
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397 return index, nodemap |
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398 |
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399 class revlog(object): |
1083 | 400 """ |
401 the underlying revision storage object | |
402 | |
403 A revlog consists of two parts, an index and the revision data. | |
404 | |
405 The index is a file with a fixed record size containing | |
406 information on each revision, includings its nodeid (hash), the | |
407 nodeids of its parents, the position and offset of its data within | |
408 the data file, and the revision it's based on. Finally, each entry | |
409 contains a linkrev entry that can serve as a pointer to external | |
410 data. | |
411 | |
412 The revision data itself is a linear collection of data chunks. | |
413 Each chunk represents a revision and is usually represented as a | |
414 delta against the previous chunk. To bound lookup time, runs of | |
415 deltas are limited to about 2 times the length of the original | |
416 version data. This makes retrieval of a version proportional to | |
417 its size, or O(1) relative to the number of revisions. | |
418 | |
419 Both pieces of the revlog are written to in an append-only | |
420 fashion, which means we never need to rewrite a file to insert or | |
421 remove data, and can use some simple techniques to avoid the need | |
422 for locking while reading. | |
423 """ | |
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424 def __init__(self, opener, indexfile): |
1083 | 425 """ |
426 create a revlog object | |
427 | |
428 opener is a function that abstracts the file opening operation | |
429 and can be used to implement COW semantics or the like. | |
430 """ | |
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431 self.indexfile = indexfile |
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432 self.datafile = indexfile[:-2] + ".d" |
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433 self.opener = opener |
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434 |
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435 self.indexstat = None |
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436 self.cache = None |
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437 self.defversion = REVLOG_DEFAULT_VERSION |
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438 if hasattr(opener, "defversion"): |
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439 self.defversion = opener.defversion |
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440 if self.defversion & REVLOGNG: |
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441 self.defversion |= REVLOGNGINLINEDATA |
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442 self._load() |
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443 |
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444 def _load(self): |
2072 | 445 v = self.defversion |
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446 try: |
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447 f = self.opener(self.indexfile) |
2079 | 448 i = f.read(4) |
449 f.seek(0) | |
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450 if len(i) > 0: |
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451 v = struct.unpack(versionformat, i)[0] |
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452 except IOError, inst: |
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453 if inst.errno != errno.ENOENT: |
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454 raise |
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455 i = "" |
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456 else: |
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457 try: |
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458 st = util.fstat(f) |
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459 except AttributeError, inst: |
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460 st = None |
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461 else: |
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462 oldst = self.indexstat |
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463 if (oldst and st.st_dev == oldst.st_dev |
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464 and st.st_ino == oldst.st_ino |
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465 and st.st_mtime == oldst.st_mtime |
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466 and st.st_ctime == oldst.st_ctime |
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467 and st.st_size == oldst.st_size): |
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468 return |
2072 | 469 self.indexstat = st |
2073 | 470 flags = v & ~0xFFFF |
471 fmt = v & 0xFFFF | |
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472 if fmt == REVLOGV0: |
2073 | 473 if flags: |
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474 raise RevlogError(_("index %s unknown flags %#04x for format v0") |
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475 % (self.indexfile, flags >> 16)) |
2073 | 476 elif fmt == REVLOGNG: |
477 if flags & ~REVLOGNGINLINEDATA: | |
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478 raise RevlogError(_("index %s unknown flags %#04x for revlogng") |
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479 % (self.indexfile, flags >> 16)) |
2073 | 480 else: |
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481 raise RevlogError(_("index %s unknown format %d") |
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482 % (self.indexfile, fmt)) |
2072 | 483 self.version = v |
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484 self.nodemap = {nullid: nullrev} |
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485 self.index = [] |
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486 self._io = revlogio() |
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487 self.indexformat = indexformatng |
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488 if self.version == REVLOGV0: |
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489 self._io = revlogoldio() |
2072 | 490 self.indexformat = indexformatv0 |
491 if i: | |
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492 self.index, self.nodemap = self._io.parseindex(f, st, self._inline()) |
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493 |
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494 def _loadindex(self, start, end): |
2079 | 495 """load a block of indexes all at once from the lazy parser""" |
496 if isinstance(self.index, lazyindex): | |
497 self.index.p.loadindex(start, end) | |
498 | |
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499 def _loadindexmap(self): |
2072 | 500 """loads both the map and the index from the lazy parser""" |
501 if isinstance(self.index, lazyindex): | |
502 p = self.index.p | |
2079 | 503 p.loadindex() |
504 self.nodemap = p.map | |
505 | |
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506 def _loadmap(self): |
2079 | 507 """loads the map from the lazy parser""" |
508 if isinstance(self.nodemap, lazymap): | |
509 self.nodemap.p.loadmap() | |
510 self.nodemap = self.nodemap.p.map | |
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511 |
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512 def _inline(self): return self.version & REVLOGNGINLINEDATA |
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513 |
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514 def tip(self): return self.node(len(self.index) - 1) |
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515 def count(self): return len(self.index) |
2072 | 516 def node(self, rev): |
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517 return rev == nullrev and nullid or self.index[rev][-1] |
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518 def rev(self, node): |
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519 try: |
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520 return self.nodemap[node] |
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521 except KeyError: |
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522 raise LookupError(_('%s: no node %s') % (self.indexfile, hex(node))) |
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523 def linkrev(self, node): |
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524 return (node == nullid) and nullrev or self.index[self.rev(node)][-4] |
2 | 525 def parents(self, node): |
526 if node == nullid: return (nullid, nullid) | |
2072 | 527 r = self.rev(node) |
528 d = self.index[r][-3:-1] | |
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529 if self.version == REVLOGV0: |
2072 | 530 return d |
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531 return (self.node(d[0]), self.node(d[1])) |
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532 def parentrevs(self, rev): |
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533 if rev == nullrev: |
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534 return (nullrev, nullrev) |
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535 d = self.index[rev][-3:-1] |
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536 if self.version == REVLOGV0: |
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537 return (self.rev(d[0]), self.rev(d[1])) |
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538 return d |
2072 | 539 def start(self, rev): |
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540 if rev == nullrev: |
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541 return 0 |
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542 if self.version != REVLOGV0: |
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543 return getoffset(self.index[rev][0]) |
2072 | 544 return self.index[rev][0] |
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545 |
2072 | 546 def end(self, rev): return self.start(rev) + self.length(rev) |
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547 |
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548 def size(self, rev): |
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549 """return the length of the uncompressed text for a given revision""" |
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550 if rev == nullrev: |
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551 return 0 |
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552 l = -1 |
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553 if self.version != REVLOGV0: |
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554 l = self.index[rev][2] |
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555 if l >= 0: |
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556 return l |
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557 |
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558 t = self.revision(self.node(rev)) |
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559 return len(t) |
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560 |
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561 # alternate implementation, The advantage to this code is it |
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562 # will be faster for a single revision. But, the results are not |
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563 # cached, so finding the size of every revision will be slower. |
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564 """ |
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565 if self.cache and self.cache[1] == rev: |
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566 return len(self.cache[2]) |
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567 |
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568 base = self.base(rev) |
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569 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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570 base = self.cache[1] |
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571 text = self.cache[2] |
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572 else: |
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573 text = self.revision(self.node(base)) |
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574 |
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575 l = len(text) |
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576 for x in xrange(base + 1, rev + 1): |
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577 l = mdiff.patchedsize(l, self.chunk(x)) |
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578 return l |
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579 """ |
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580 |
1941
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581 def length(self, rev): |
3585
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582 if rev == nullrev: |
1941
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583 return 0 |
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584 else: |
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585 return self.index[rev][1] |
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586 def base(self, rev): |
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587 if (rev == nullrev): |
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588 return nullrev |
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589 else: |
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590 return self.index[rev][-5] |
0
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591 |
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592 def reachable(self, node, stop=None): |
3683 | 593 """return a hash of all nodes ancestral to a given node, including |
594 the node itself, stopping when stop is matched""" | |
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595 reachable = {} |
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596 visit = [node] |
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597 reachable[node] = 1 |
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598 if stop: |
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599 stopn = self.rev(stop) |
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600 else: |
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601 stopn = 0 |
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602 while visit: |
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603 n = visit.pop(0) |
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604 if n == stop: |
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605 continue |
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606 if n == nullid: |
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607 continue |
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608 for p in self.parents(n): |
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609 if self.rev(p) < stopn: |
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610 continue |
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|
611 if p not in reachable: |
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612 reachable[p] = 1 |
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613 visit.append(p) |
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614 return reachable |
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615 |
1457
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616 def nodesbetween(self, roots=None, heads=None): |
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617 """Return a tuple containing three elements. Elements 1 and 2 contain |
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618 a final list bases and heads after all the unreachable ones have been |
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619 pruned. Element 0 contains a topologically sorted list of all |
518da3c3b6ce
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620 |
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|
621 nodes that satisfy these constraints: |
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622 1. All nodes must be descended from a node in roots (the nodes on |
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|
623 roots are considered descended from themselves). |
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624 2. All nodes must also be ancestors of a node in heads (the nodes in |
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625 heads are considered to be their own ancestors). |
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|
626 |
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|
627 If roots is unspecified, nullid is assumed as the only root. |
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628 If heads is unspecified, it is taken to be the output of the |
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629 heads method (i.e. a list of all nodes in the repository that |
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|
630 have no children).""" |
1463
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631 nonodes = ([], [], []) |
1457
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632 if roots is not None: |
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|
633 roots = list(roots) |
1463
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634 if not roots: |
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|
635 return nonodes |
1457
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|
636 lowestrev = min([self.rev(n) for n in roots]) |
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|
637 else: |
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|
638 roots = [nullid] # Everybody's a descendent of nullid |
3578
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parents:
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diff
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|
639 lowestrev = nullrev |
3b4e00cba57a
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Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
diff
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|
640 if (lowestrev == nullrev) and (heads is None): |
1457
518da3c3b6ce
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|
641 # We want _all_ the nodes! |
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|
642 return ([self.node(r) for r in xrange(0, self.count())], |
518da3c3b6ce
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|
643 [nullid], list(self.heads())) |
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|
644 if heads is None: |
518da3c3b6ce
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|
645 # All nodes are ancestors, so the latest ancestor is the last |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
646 # node. |
518da3c3b6ce
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|
647 highestrev = self.count() - 1 |
518da3c3b6ce
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|
648 # Set ancestors to None to signal that every node is an ancestor. |
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649 ancestors = None |
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|
650 # Set heads to an empty dictionary for later discovery of heads |
518da3c3b6ce
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651 heads = {} |
518da3c3b6ce
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|
652 else: |
1463
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|
653 heads = list(heads) |
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|
654 if not heads: |
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|
655 return nonodes |
1457
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656 ancestors = {} |
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657 # Turn heads into a dictionary so we can remove 'fake' heads. |
518da3c3b6ce
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658 # Also, later we will be using it to filter out the heads we can't |
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659 # find from roots. |
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|
660 heads = dict.fromkeys(heads, 0) |
3360
ef8307585b41
nodesbetween: fix a bug with duplicate heads
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parents:
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diff
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|
661 # Start at the top and keep marking parents until we're done. |
ef8307585b41
nodesbetween: fix a bug with duplicate heads
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diff
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|
662 nodestotag = heads.keys() |
1457
518da3c3b6ce
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663 # Remember where the top was so we can use it as a limit later. |
518da3c3b6ce
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664 highestrev = max([self.rev(n) for n in nodestotag]) |
518da3c3b6ce
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|
665 while nodestotag: |
518da3c3b6ce
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666 # grab a node to tag |
518da3c3b6ce
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|
667 n = nodestotag.pop() |
518da3c3b6ce
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|
668 # Never tag nullid |
518da3c3b6ce
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|
669 if n == nullid: |
518da3c3b6ce
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diff
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670 continue |
518da3c3b6ce
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parents:
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671 # A node's revision number represents its place in a |
518da3c3b6ce
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672 # topologically sorted list of nodes. |
518da3c3b6ce
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|
673 r = self.rev(n) |
518da3c3b6ce
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|
674 if r >= lowestrev: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
675 if n not in ancestors: |
518da3c3b6ce
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diff
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676 # If we are possibly a descendent of one of the roots |
518da3c3b6ce
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677 # and we haven't already been marked as an ancestor |
518da3c3b6ce
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|
678 ancestors[n] = 1 # Mark as ancestor |
518da3c3b6ce
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parents:
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diff
changeset
|
679 # Add non-nullid parents to list of nodes to tag. |
518da3c3b6ce
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diff
changeset
|
680 nodestotag.extend([p for p in self.parents(n) if |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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681 p != nullid]) |
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This implements the nodesbetween method, and it removes the newer method
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682 elif n in heads: # We've seen it before, is it a fake head? |
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This implements the nodesbetween method, and it removes the newer method
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683 # So it is, real heads should not be the ancestors of |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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684 # any other heads. |
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This implements the nodesbetween method, and it removes the newer method
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685 heads.pop(n) |
1459
106fdec8e1fb
Fix small bug in nodesbetween if heads is [nullid].
Eric Hopper <hopper@omnifarious.org>
parents:
1458
diff
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|
686 if not ancestors: |
1463
26e73acc0cdf
Fix to handle case of empty list for roots or heads in nodesbetween.
Eric Hopper <hopper@omnifarious.org>
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1459
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|
687 return nonodes |
1457
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This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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688 # Now that we have our set of ancestors, we want to remove any |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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689 # roots that are not ancestors. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
690 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
691 # If one of the roots was nullid, everything is included anyway. |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
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changeset
|
692 if lowestrev > nullrev: |
1457
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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diff
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|
693 # But, since we weren't, let's recompute the lowest rev to not |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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694 # include roots that aren't ancestors. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
695 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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changeset
|
696 # Filter out roots that aren't ancestors of heads |
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This implements the nodesbetween method, and it removes the newer method
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changeset
|
697 roots = [n for n in roots if n in ancestors] |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
698 # Recompute the lowest revision |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
699 if roots: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
700 lowestrev = min([self.rev(n) for n in roots]) |
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This implements the nodesbetween method, and it removes the newer method
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|
701 else: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
702 # No more roots? Return empty list |
1463
26e73acc0cdf
Fix to handle case of empty list for roots or heads in nodesbetween.
Eric Hopper <hopper@omnifarious.org>
parents:
1459
diff
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|
703 return nonodes |
1457
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
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|
704 else: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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|
705 # We are descending from nullid, and don't need to care about |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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diff
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|
706 # any other roots. |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
diff
changeset
|
707 lowestrev = nullrev |
1457
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This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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|
708 roots = [nullid] |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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changeset
|
709 # Transform our roots list into a 'set' (i.e. a dictionary where the |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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changeset
|
710 # values don't matter. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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changeset
|
711 descendents = dict.fromkeys(roots, 1) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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1351
diff
changeset
|
712 # Also, keep the original roots so we can filter out roots that aren't |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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diff
changeset
|
713 # 'real' roots (i.e. are descended from other roots). |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
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diff
changeset
|
714 roots = descendents.copy() |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
715 # Our topologically sorted list of output nodes. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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|
716 orderedout = [] |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
717 # Don't start at nullid since we don't want nullid in our output list, |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
718 # and if nullid shows up in descedents, empty parents will look like |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
719 # they're descendents. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
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diff
changeset
|
720 for r in xrange(max(lowestrev, 0), highestrev + 1): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
721 n = self.node(r) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
722 isdescendent = False |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
diff
changeset
|
723 if lowestrev == nullrev: # Everybody is a descendent of nullid |
1457
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
724 isdescendent = True |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
725 elif n in descendents: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
726 # n is already a descendent |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
727 isdescendent = True |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
728 # This check only needs to be done here because all the roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
729 # will start being marked is descendents before the loop. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
730 if n in roots: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
731 # If n was a root, check if it's a 'real' root. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
732 p = tuple(self.parents(n)) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
733 # If any of its parents are descendents, it's not a root. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
734 if (p[0] in descendents) or (p[1] in descendents): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
735 roots.pop(n) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
736 else: |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
737 p = tuple(self.parents(n)) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
738 # A node is a descendent if either of its parents are |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
739 # descendents. (We seeded the dependents list with the roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
740 # up there, remember?) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
741 if (p[0] in descendents) or (p[1] in descendents): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
742 descendents[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
743 isdescendent = True |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
744 if isdescendent and ((ancestors is None) or (n in ancestors)): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
745 # Only include nodes that are both descendents and ancestors. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
746 orderedout.append(n) |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
747 if (ancestors is not None) and (n in heads): |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
748 # We're trying to figure out which heads are reachable |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
749 # from roots. |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
750 # Mark this head as having been reached |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
751 heads[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
752 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
|
753 # 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
|
754 # 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
|
755 # 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
|
756 heads[n] = 1 |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
757 # 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
|
758 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
|
759 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
|
760 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
|
761 roots = roots.keys() |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
762 assert orderedout |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
763 assert roots |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
764 assert heads |
518da3c3b6ce
This implements the nodesbetween method, and it removes the newer method
Eric Hopper <hopper@omnifarious.org>
parents:
1351
diff
changeset
|
765 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
|
766 |
3925
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
767 def heads(self, start=None, stop=None): |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
768 """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
|
769 |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
770 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
|
771 start will be returned |
3925
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
772 if stop is specified, it will consider all the revs from stop |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
773 as if they had no children |
1551
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
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diff
changeset
|
774 """ |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
775 if start is None: |
e793cbc8be00
Fixes to "hg heads -r FOO":
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1550
diff
changeset
|
776 start = nullid |
3925
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
777 if stop is None: |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
778 stop = [] |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
779 stoprevs = dict.fromkeys([self.rev(n) for n in stop]) |
1550
ccb9b62de892
add a -r/--rev option to heads to show only heads descendant from rev
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1535
diff
changeset
|
780 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
|
781 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
|
782 heads = {startrev: 1} |
1083 | 783 |
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
|
784 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
|
785 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
|
786 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:
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diff
changeset
|
787 if p in reachable: |
3925
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
788 if r not in stoprevs: |
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
789 reachable[r] = 1 |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
790 heads[r] = 1 |
3925
27230c29bfec
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
791 if p in heads and p not in stoprevs: |
2490
6ff82ec1f4b8
Change revlog.heads to walk the revision graph using revision numbers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
2489
diff
changeset
|
792 del heads[p] |
3925
27230c29bfec
fix calculation of new heads added during push with -r
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3755
diff
changeset
|
793 |
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
|
794 return [self.node(r) for r in heads] |
370 | 795 |
796 def children(self, node): | |
1083 | 797 """find the children of a given node""" |
370 | 798 c = [] |
799 p = self.rev(node) | |
800 for r in range(p + 1, self.count()): | |
4781
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
801 prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] |
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
802 if prevs: |
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
803 for pr in prevs: |
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
804 if pr == p: |
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
805 c.append(self.node(r)) |
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
806 elif p == nullrev: |
62c56d8f368b
Fix revlog.children so the real children of the null revision can be calculated.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4635
diff
changeset
|
807 c.append(self.node(r)) |
370 | 808 return c |
515 | 809 |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
810 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
|
811 if isinstance(id, (long, int)): |
3152
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
812 # 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
|
813 return self.node(id) |
3438 | 814 if len(id) == 20: |
815 # possibly a binary node | |
816 # odds of a binary node being all hex in ASCII are 1 in 10**25 | |
817 try: | |
818 node = id | |
819 r = self.rev(node) # quick search the index | |
820 return node | |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
821 except LookupError: |
3438 | 822 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
|
823 try: |
3152
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
824 # str(rev) |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
825 rev = int(id) |
469 | 826 if str(rev) != id: raise ValueError |
827 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
|
828 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
|
829 return self.node(rev) |
469 | 830 except (ValueError, OverflowError): |
3152
d01e4cb2f5f2
cleanups in revlog.lookup
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3139
diff
changeset
|
831 pass |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
832 if len(id) == 40: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
833 try: |
3438 | 834 # a full hex nodeid? |
835 node = bin(id) | |
836 r = self.rev(node) | |
3153
4fe41a9e4591
optimize revlog.lookup when passed hex(node)[:...]
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
3152
diff
changeset
|
837 return node |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
838 except TypeError: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
839 pass |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
840 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
841 def _partialmatch(self, id): |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
842 if len(id) < 40: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
843 try: |
3438 | 844 # hex(node)[:...] |
845 bin_id = bin(id[:len(id) & ~1]) # grab an even number of digits | |
846 node = None | |
847 for n in self.nodemap: | |
848 if n.startswith(bin_id) and hex(n).startswith(id): | |
849 if node is not None: | |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
850 raise LookupError(_("Ambiguous identifier")) |
3438 | 851 node = n |
852 if node is not None: | |
853 return node | |
3494
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
854 except TypeError: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
855 pass |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
856 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
857 def lookup(self, id): |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
858 """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
|
859 - 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
|
860 - 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
|
861 """ |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
862 |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
863 n = self._match(id) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
864 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
|
865 return n |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
866 n = self._partialmatch(id) |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
867 if n: |
dba3cadef789
Only look up tags and branches as a last resort
Matt Mackall <mpm@selenic.com>
parents:
3438
diff
changeset
|
868 return n |
515 | 869 |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
870 raise LookupError(_("No match found")) |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
871 |
2910
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
872 def cmp(self, node, text): |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
873 """compare text with a given file revision""" |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
874 p1, p2 = self.parents(node) |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
875 return hash(text, p1, p2) != node |
5df3e5cf16bc
Move cmp bits from filelog to revlog
Matt Mackall <mpm@selenic.com>
parents:
2858
diff
changeset
|
876 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
877 def diff(self, a, b): |
1083 | 878 """return a delta between two revisions""" |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
879 return mdiff.textdiff(a, b) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
880 |
73 | 881 def patches(self, t, pl): |
1083 | 882 """apply a list of patches to a string""" |
73 | 883 return mdiff.patches(t, pl) |
884 | |
2072 | 885 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
|
886 start, length = self.start(rev), self.length(rev) |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
887 inline = self._inline() |
2073 | 888 if inline: |
889 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
|
890 end = start + length |
2072 | 891 def loadcache(df): |
892 cache_length = max(cachelen, length) # 4k | |
893 if not df: | |
2073 | 894 if inline: |
895 df = self.opener(self.indexfile) | |
896 else: | |
897 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
|
898 df.seek(start) |
4972
8d0cf46e0dc6
revlog: add revlogio interface
Matt Mackall <mpm@selenic.com>
parents:
4971
diff
changeset
|
899 self._io.chunkcache = (start, df.read(cache_length)) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
900 |
4972
8d0cf46e0dc6
revlog: add revlogio interface
Matt Mackall <mpm@selenic.com>
parents:
4971
diff
changeset
|
901 if not self._io.chunkcache: |
2072 | 902 loadcache(df) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
903 |
4972
8d0cf46e0dc6
revlog: add revlogio interface
Matt Mackall <mpm@selenic.com>
parents:
4971
diff
changeset
|
904 cache_start = self._io.chunkcache[0] |
8d0cf46e0dc6
revlog: add revlogio interface
Matt Mackall <mpm@selenic.com>
parents:
4971
diff
changeset
|
905 cache_end = cache_start + len(self._io.chunkcache[1]) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
906 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
|
907 # it is cached |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
908 offset = start - cache_start |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
909 else: |
2072 | 910 loadcache(df) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
911 offset = 0 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
912 |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
913 #def checkchunk(): |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
914 # df = self.opener(self.datafile) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
915 # df.seek(start) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
916 # return df.read(length) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
917 #assert s == checkchunk() |
4972
8d0cf46e0dc6
revlog: add revlogio interface
Matt Mackall <mpm@selenic.com>
parents:
4971
diff
changeset
|
918 return decompress(self._io.chunkcache[1][offset:offset + length]) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
919 |
119
c7a66f9752a4
Add code to retrieve or construct a revlog delta
mpm@selenic.com
parents:
117
diff
changeset
|
920 def delta(self, node): |
1083 | 921 """return or calculate a delta between a node and its predecessor""" |
119
c7a66f9752a4
Add code to retrieve or construct a revlog delta
mpm@selenic.com
parents:
117
diff
changeset
|
922 r = self.rev(node) |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
923 return self.revdiff(r - 1, r) |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
924 |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
925 def revdiff(self, rev1, rev2): |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
926 """return or calculate a delta between two revisions""" |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
927 b1 = self.base(rev1) |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
928 b2 = self.base(rev2) |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
929 if b1 == b2 and rev1 + 1 == rev2: |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
930 return self.chunk(rev2) |
119
c7a66f9752a4
Add code to retrieve or construct a revlog delta
mpm@selenic.com
parents:
117
diff
changeset
|
931 else: |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
932 return self.diff(self.revision(self.node(rev1)), |
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
933 self.revision(self.node(rev2))) |
119
c7a66f9752a4
Add code to retrieve or construct a revlog delta
mpm@selenic.com
parents:
117
diff
changeset
|
934 |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
935 def revision(self, node): |
1083 | 936 """return an uncompressed revision of a given""" |
36
da28286bf6b7
Add smart node lookup by substring or by rev number
mpm@selenic.com
parents:
26
diff
changeset
|
937 if node == nullid: return "" |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
938 if self.cache and self.cache[0] == node: return self.cache[2] |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
939 |
1083 | 940 # look up what we need to read |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
941 text = None |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
942 rev = self.rev(node) |
1598
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
943 base = self.base(rev) |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
944 |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
945 if self._inline(): |
2073 | 946 # we probably have the whole chunk cached |
947 df = None | |
948 else: | |
949 df = self.opener(self.datafile) | |
2072 | 950 |
1083 | 951 # do we have useful data cached? |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
952 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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953 base = self.cache[1] |
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954 text = self.cache[2] |
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955 self._loadindex(base, rev + 1) |
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956 else: |
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957 self._loadindex(base, rev + 1) |
2072 | 958 text = self.chunk(base, df=df) |
0
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959 |
71
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960 bins = [] |
64 | 961 for r in xrange(base + 1, rev + 1): |
2072 | 962 bins.append(self.chunk(r, df=df)) |
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963 |
1941
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964 text = self.patches(text, bins) |
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965 |
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966 p1, p2 = self.parents(node) |
26 | 967 if node != hash(text, p1, p2): |
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968 raise RevlogError(_("integrity check failed on %s:%d") |
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969 % (self.datafile, rev)) |
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970 |
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971 self.cache = (node, rev, text) |
515 | 972 return text |
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973 |
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974 def checkinlinesize(self, tr, fp=None): |
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975 if not self._inline(): |
2073 | 976 return |
2075
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977 if not fp: |
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978 fp = self.opener(self.indexfile, 'r') |
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979 fp.seek(0, 2) |
2073 | 980 size = fp.tell() |
981 if size < 131072: | |
982 return | |
2084 | 983 trinfo = tr.find(self.indexfile) |
984 if trinfo == None: | |
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985 raise RevlogError(_("%s not found in the transaction") |
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986 % self.indexfile) |
2084 | 987 |
988 trindex = trinfo[2] | |
989 dataoff = self.start(trindex) | |
990 | |
991 tr.add(self.datafile, dataoff) | |
2073 | 992 df = self.opener(self.datafile, 'w') |
993 calc = struct.calcsize(self.indexformat) | |
994 for r in xrange(self.count()): | |
995 start = self.start(r) + (r + 1) * calc | |
996 length = self.length(r) | |
997 fp.seek(start) | |
998 d = fp.read(length) | |
999 df.write(d) | |
1000 fp.close() | |
1001 df.close() | |
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1002 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
2073 | 1003 self.version &= ~(REVLOGNGINLINEDATA) |
1004 if self.count(): | |
1005 x = self.index[0] | |
1006 e = struct.pack(self.indexformat, *x)[4:] | |
1007 l = struct.pack(versionformat, self.version) | |
1008 fp.write(l) | |
1009 fp.write(e) | |
1010 | |
1011 for i in xrange(1, self.count()): | |
1012 x = self.index[i] | |
1013 e = struct.pack(self.indexformat, *x) | |
1014 fp.write(e) | |
1015 | |
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1016 # if we don't call rename, the temp file will never replace the |
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1017 # real index |
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1018 fp.rename() |
2084 | 1019 |
1020 tr.replace(self.indexfile, trindex * calc) | |
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1021 self._io.chunkcache = None |
2073 | 1022 |
644 | 1023 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
1083 | 1024 """add a revision to the log |
1025 | |
1026 text - the revision data to add | |
1027 transaction - the transaction object used for rollback | |
1028 link - the linkrev data to add | |
1029 p1, p2 - the parent nodeids of the revision | |
1030 d - an optional precomputed delta | |
1031 """ | |
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1032 if not self._inline(): |
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1033 dfh = self.opener(self.datafile, "a") |
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1034 else: |
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1035 dfh = None |
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1036 ifh = self.opener(self.indexfile, "a+") |
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1037 return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) |
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1038 |
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1039 def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): |
0
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1040 if text is None: text = "" |
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1041 if p1 is None: p1 = self.tip() |
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1042 if p2 is None: p2 = nullid |
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1043 |
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1044 node = hash(text, p1, p2) |
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1045 |
301 | 1046 if node in self.nodemap: |
1047 return node | |
1048 | |
0
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1049 n = self.count() |
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1050 t = n - 1 |
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1051 |
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1052 if n: |
64 | 1053 base = self.base(t) |
1054 start = self.start(base) | |
0
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1055 end = self.end(t) |
644 | 1056 if not d: |
1057 prev = self.revision(self.tip()) | |
3333
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1058 d = self.diff(prev, text) |
98 | 1059 data = compress(d) |
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1060 l = len(data[1]) + len(data[0]) |
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1061 dist = end - start + l |
0
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1062 |
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1063 # full versions are inserted when the needed deltas |
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1064 # become comparable to the uncompressed text |
64 | 1065 if not n or dist > len(text) * 2: |
0
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1066 data = compress(text) |
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1067 l = len(data[1]) + len(data[0]) |
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1068 base = n |
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1069 else: |
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1070 base = self.base(t) |
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1071 |
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1072 offset = 0 |
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1073 if t >= 0: |
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1074 offset = self.end(t) |
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1075 |
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1076 if self.version == REVLOGV0: |
2072 | 1077 e = (offset, l, base, link, p1, p2, node) |
1078 else: | |
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1079 e = (offset_type(offset, 0), l, len(text), |
2072 | 1080 base, link, self.rev(p1), self.rev(p2), node) |
515 | 1081 |
0
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1082 self.index.append(e) |
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1083 self.nodemap[node] = n |
2072 | 1084 entry = struct.pack(self.indexformat, *e) |
0
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1085 |
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1086 if not self._inline(): |
2073 | 1087 transaction.add(self.datafile, offset) |
1088 transaction.add(self.indexfile, n * len(entry)) | |
1089 if data[0]: | |
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1090 dfh.write(data[0]) |
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1091 dfh.write(data[1]) |
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1092 dfh.flush() |
2073 | 1093 else: |
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1094 ifh.seek(0, 2) |
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1095 transaction.add(self.indexfile, ifh.tell(), self.count() - 1) |
2072 | 1096 |
2142
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1097 if len(self.index) == 1 and self.version != REVLOGV0: |
2072 | 1098 l = struct.pack(versionformat, self.version) |
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1099 ifh.write(l) |
2072 | 1100 entry = entry[4:] |
1101 | |
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1102 ifh.write(entry) |
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1103 |
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1104 if self._inline(): |
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1105 ifh.write(data[0]) |
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1106 ifh.write(data[1]) |
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1107 self.checkinlinesize(transaction, ifh) |
2073 | 1108 |
0
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1109 self.cache = (node, n, text) |
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1110 return node |
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1111 |
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1112 def ancestor(self, a, b): |
1083 | 1113 """calculate the least common ancestor of nodes a and b""" |
2081
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1114 |
3139
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1115 def parents(rev): |
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1116 return [p for p in self.parentrevs(rev) if p != nullrev] |
515 | 1117 |
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1118 c = ancestor.ancestor(self.rev(a), self.rev(b), parents) |
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1119 if c is None: |
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1120 return nullid |
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1121 |
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1122 return self.node(c) |
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1123 |
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1124 def group(self, nodelist, lookup, infocollect=None): |
1083 | 1125 """calculate a delta group |
46 | 1126 |
1083 | 1127 Given a list of changeset revs, return a set of deltas and |
1128 metadata corresponding to nodes. the first delta is | |
1129 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1130 have this parent as it has all history before these | |
1131 changesets. parent is parent[0] | |
1132 """ | |
1458
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1133 revs = [self.rev(n) for n in nodelist] |
46 | 1134 |
1135 # if we don't have any revisions touched by these changesets, bail | |
192 | 1136 if not revs: |
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1137 yield changegroup.closechunk() |
192 | 1138 return |
46 | 1139 |
1140 # add the parent of the first rev | |
1141 p = self.parents(self.node(revs[0]))[0] | |
1142 revs.insert(0, self.rev(p)) | |
1143 | |
1144 # build deltas | |
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1145 for d in xrange(0, len(revs) - 1): |
46 | 1146 a, b = revs[d], revs[d + 1] |
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1147 nb = self.node(b) |
192 | 1148 |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1149 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
|
1150 infocollect(nb) |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
Eric Hopper <hopper@omnifarious.org>
parents:
1457
diff
changeset
|
1151 |
1941
7518823709a2
revlog.py: factorization and fixes for rev < 0 (nullid)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1853
diff
changeset
|
1152 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
|
1153 p = self.parents(nb) |
14d1f1868bf6
cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
1154 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
|
1155 yield changegroup.genchunk("%s%s" % (meta, d)) |
46 | 1156 |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
1157 yield changegroup.closechunk() |
192 | 1158 |
1062 | 1159 def addgroup(self, revs, linkmapper, transaction, unique=0): |
1083 | 1160 """ |
1161 add a delta group | |
46 | 1162 |
1083 | 1163 given a set of deltas, add them to the revision log. the |
1164 first delta is against its parent, which should be in our | |
1165 log, the rest are against the previous delta. | |
1166 """ | |
1167 | |
1168 #track the base of the current delta log | |
46 | 1169 r = self.count() |
1170 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
|
1171 node = None |
515 | 1172 |
3578
3b4e00cba57a
Define and use nullrev (revision of nullid) instead of -1.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
3505
diff
changeset
|
1173 base = prev = nullrev |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1174 start = end = textlen = 0 |
46 | 1175 if r: |
1176 end = self.end(t) | |
1177 | |
2072 | 1178 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
|
1179 ifh.seek(0, 2) |
2084 | 1180 transaction.add(self.indexfile, ifh.tell(), self.count()) |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1181 if self._inline(): |
2073 | 1182 dfh = None |
1183 else: | |
1184 transaction.add(self.datafile, end) | |
1185 dfh = self.opener(self.datafile, "a") | |
46 | 1186 |
1187 # loop through our set of deltas | |
192 | 1188 chain = None |
1189 for chunk in revs: | |
1190 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
94 | 1191 link = linkmapper(cs) |
77 | 1192 if node in self.nodemap: |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1193 # 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
|
1194 # 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
|
1195 # 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
|
1196 chain = node |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
1197 continue |
192 | 1198 delta = chunk[80:] |
1199 | |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1200 for p in (p1, p2): |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1201 if not p in self.nodemap: |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
1202 raise LookupError(_("unknown parent %s") % short(p)) |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
1203 |
192 | 1204 if not chain: |
1205 # retrieve the parent revision of the delta chain | |
1206 chain = p1 | |
1207 if not chain in self.nodemap: | |
3930
01d98d68d697
Add revlog.LookupError exception, and use it instead of RevlogError.
Brendan Cully <brendan@kublai.com>
parents:
3928
diff
changeset
|
1208 raise LookupError(_("unknown base %s") % short(chain[:4])) |
46 | 1209 |
1210 # full versions are inserted when the needed deltas become | |
1211 # comparable to the uncompressed text or when the previous | |
1212 # version is not the one we have a delta against. We use | |
1213 # the size of the previous full rev as a proxy for the | |
1214 # current size. | |
1215 | |
1216 if chain == prev: | |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
1217 tempd = compress(delta) |
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
1218 cdelta = tempd[0] + tempd[1] |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1219 textlen = mdiff.patchedsize(textlen, delta) |
46 | 1220 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1221 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
46 | 1222 # flush our writes here so we can read it in revision |
2072 | 1223 if dfh: |
1224 dfh.flush() | |
46 | 1225 ifh.flush() |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1226 text = self.revision(chain) |
73 | 1227 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
|
1228 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
|
1229 ifh, dfh) |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1230 if not dfh and not self._inline(): |
3390
a74addddd092
make revlog.addgroup pass its file handles to addrevision
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3360
diff
changeset
|
1231 # 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
|
1232 # 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
|
1233 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
|
1234 ifh = self.opener(self.indexfile, "a") |
46 | 1235 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
|
1236 raise RevlogError(_("consistency error adding group")) |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1237 textlen = len(text) |
46 | 1238 else: |
2142
8a1e2a9c7013
Replaced 0 with REVLOGV0 where this meaning is used.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
2141
diff
changeset
|
1239 if self.version == REVLOGV0: |
2072 | 1240 e = (end, len(cdelta), base, link, p1, p2, node) |
1241 else: | |
4962
e017d3a82e1d
revlog: raise offset/type helpers to global scope
Matt Mackall <mpm@selenic.com>
parents:
4781
diff
changeset
|
1242 e = (offset_type(end, 0), len(cdelta), textlen, base, |
2072 | 1243 link, self.rev(p1), self.rev(p2), node) |
46 | 1244 self.index.append(e) |
1245 self.nodemap[node] = r | |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1246 if self._inline(): |
2073 | 1247 ifh.write(struct.pack(self.indexformat, *e)) |
1248 ifh.write(cdelta) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
1249 self.checkinlinesize(transaction, ifh) |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1250 if not self._inline(): |
2073 | 1251 dfh = self.opener(self.datafile, "a") |
1252 ifh = self.opener(self.indexfile, "a") | |
1253 else: | |
1254 dfh.write(cdelta) | |
1255 ifh.write(struct.pack(self.indexformat, *e)) | |
46 | 1256 |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1257 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
|
1258 base = self.base(t) |
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1711
diff
changeset
|
1259 start = self.start(base) |
46 | 1260 end = self.end(t) |
1261 | |
1262 return node | |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1263 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1264 def strip(self, rev, minlink): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1265 if self.count() == 0 or rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1266 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1267 |
2072 | 1268 if isinstance(self.index, lazyindex): |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1269 self._loadindexmap() |
2072 | 1270 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1271 # 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
|
1272 # does not actually belong to an older changeset. |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1273 # The minlink parameter defines the oldest revision |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1274 # we're allowed to strip away. |
2072 | 1275 while minlink > self.index[rev][-4]: |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1276 rev += 1 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1277 if rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1278 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1279 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1280 # first truncate the files on disk |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1281 end = self.start(rev) |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1282 if not self._inline(): |
2073 | 1283 df = self.opener(self.datafile, "a") |
1284 df.truncate(end) | |
1285 end = rev * struct.calcsize(self.indexformat) | |
1286 else: | |
1287 end += rev * struct.calcsize(self.indexformat) | |
2072 | 1288 |
1289 indexf = self.opener(self.indexfile, "a") | |
1290 indexf.truncate(end) | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1291 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1292 # 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
|
1293 self.cache = None |
4972
8d0cf46e0dc6
revlog: add revlogio interface
Matt Mackall <mpm@selenic.com>
parents:
4971
diff
changeset
|
1294 self._io.chunkcache = None |
2072 | 1295 for x in xrange(rev, self.count()): |
1296 del self.nodemap[self.node(x)] | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1297 |
2072 | 1298 del self.index[rev:] |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1299 |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1300 def checksize(self): |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1301 expected = 0 |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1302 if self.count(): |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1303 expected = self.end(self.count() - 1) |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1304 |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1305 try: |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1306 f = self.opener(self.datafile) |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1307 f.seek(0, 2) |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1308 actual = f.tell() |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1309 dd = actual - expected |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1310 except IOError, inst: |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1311 if inst.errno != errno.ENOENT: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1312 raise |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1313 dd = 0 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1314 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1315 try: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1316 f = self.opener(self.indexfile) |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1317 f.seek(0, 2) |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1318 actual = f.tell() |
2072 | 1319 s = struct.calcsize(self.indexformat) |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1320 i = actual / s |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1321 di = actual - (i * s) |
4964
ee983d0dbea8
revlog: privatize some methods
Matt Mackall <mpm@selenic.com>
parents:
4963
diff
changeset
|
1322 if self._inline(): |
2073 | 1323 databytes = 0 |
1324 for r in xrange(self.count()): | |
1325 databytes += self.length(r) | |
1326 dd = 0 | |
1327 di = actual - self.count() * s - databytes | |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1328 except IOError, inst: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1329 if inst.errno != errno.ENOENT: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1330 raise |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1331 di = 0 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1332 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1333 return (dd, di) |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1334 |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1335 |