Mercurial > public > mercurial-scm > hg-stable
annotate mercurial/revlog.py @ 2078:441ea218414e
Fill in the uncompressed size during revlog.addgroup
This uses code from Matt to calculate the size change that
would result from applying a delta to keep an accurate running
total of the text size during revlog.addgroup
author | mason@suse.com |
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date | Tue, 04 Apr 2006 16:38:44 -0400 |
parents | 4d0700ae0991 |
children | ee96ca273f32 |
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 | |
7 Copyright 2005 Matt Mackall <mpm@selenic.com> | |
8 | |
9 This software may be used and distributed according to the terms | |
10 of the GNU General Public License, incorporated herein by reference. | |
11 """ | |
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12 |
1089 | 13 from node import * |
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14 from i18n import gettext as _ |
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15 from demandload import demandload |
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16 demandload(globals(), "binascii changegroup errno heapq mdiff os") |
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17 demandload(globals(), "sha struct zlib") |
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18 |
2072 | 19 # revlog version strings |
20 REVLOGV0 = 0 | |
21 REVLOGNG = 1 | |
22 | |
2073 | 23 # revlog flags |
24 REVLOGNGINLINEDATA = (1 << 16) | |
25 | |
26 def flagstr(flag): | |
27 if flag == "inline": | |
28 return REVLOGNGINLINEDATA | |
29 raise RevlogError(_("unknown revlog flag %s" % flag)) | |
30 | |
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31 def hash(text, p1, p2): |
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32 """generate a hash from the given text and its parent hashes |
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33 |
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34 This hash combines both the current file contents and its history |
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35 in a manner that makes it easy to distinguish nodes with the same |
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36 content in the revision graph. |
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37 """ |
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38 l = [p1, p2] |
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39 l.sort() |
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40 s = sha.new(l[0]) |
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41 s.update(l[1]) |
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42 s.update(text) |
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43 return s.digest() |
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44 |
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45 def compress(text): |
1083 | 46 """ generate a possibly-compressed representation of text """ |
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47 if not text: return ("", text) |
112 | 48 if len(text) < 44: |
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49 if text[0] == '\0': return ("", text) |
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50 return ('u', text) |
112 | 51 bin = zlib.compress(text) |
52 if len(bin) > len(text): | |
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53 if text[0] == '\0': return ("", text) |
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54 return ('u', text) |
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55 return ("", bin) |
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56 |
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57 def decompress(bin): |
1083 | 58 """ decompress the given input """ |
112 | 59 if not bin: return bin |
60 t = bin[0] | |
61 if t == '\0': return bin | |
62 if t == 'x': return zlib.decompress(bin) | |
63 if t == 'u': return bin[1:] | |
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64 raise RevlogError(_("unknown compression type %r") % t) |
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65 |
2072 | 66 indexformatv0 = ">4l20s20s20s" |
67 # index ng: | |
68 # 6 bytes offset | |
69 # 2 bytes flags | |
70 # 4 bytes compressed length | |
71 # 4 bytes uncompressed length | |
72 # 4 bytes: base rev | |
73 # 4 bytes link rev | |
74 # 4 bytes parent 1 rev | |
75 # 4 bytes parent 2 rev | |
76 # 32 bytes: nodeid | |
77 indexformatng = ">Qiiiiii20s12x" | |
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 | |
84 By default we parse and load 1000 entries at a time. | |
85 | |
86 If no position is specified, we load the whole index, and replace | |
87 the lazy objects in revlog with the underlying objects for | |
88 efficiency in cases where we look at most of the nodes. | |
89 """ | |
2072 | 90 def __init__(self, data, revlog, indexformat): |
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91 self.data = data |
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92 self.s = struct.calcsize(indexformat) |
2072 | 93 self.indexformat = indexformat |
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94 self.l = len(data)/self.s |
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95 self.index = [None] * self.l |
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96 self.map = {nullid: -1} |
323 | 97 self.all = 0 |
98 self.revlog = revlog | |
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99 |
323 | 100 def load(self, pos=None): |
101 if self.all: return | |
102 if pos is not None: | |
103 block = pos / 1000 | |
104 i = block * 1000 | |
105 end = min(self.l, i + 1000) | |
106 else: | |
107 self.all = 1 | |
108 i = 0 | |
109 end = self.l | |
110 self.revlog.index = self.index | |
111 self.revlog.nodemap = self.map | |
515 | 112 |
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113 while i < end: |
2072 | 114 if not self.index[i]: |
115 d = self.data[i * self.s: (i + 1) * self.s] | |
116 e = struct.unpack(self.indexformat, d) | |
117 self.index[i] = e | |
118 self.map[e[-1]] = i | |
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119 i += 1 |
515 | 120 |
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121 class lazyindex(object): |
1083 | 122 """a lazy version of the index array""" |
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123 def __init__(self, parser): |
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124 self.p = parser |
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125 def __len__(self): |
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126 return len(self.p.index) |
115 | 127 def load(self, pos): |
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128 if pos < 0: |
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129 pos += len(self.p.index) |
115 | 130 self.p.load(pos) |
131 return self.p.index[pos] | |
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132 def __getitem__(self, pos): |
115 | 133 return self.p.index[pos] or self.load(pos) |
2072 | 134 def __setitem__(self, pos, item): |
135 self.p.index[pos] = item | |
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136 def __delitem__(self, pos): |
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137 del self.p.index[pos] |
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138 def append(self, e): |
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139 self.p.index.append(e) |
515 | 140 |
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141 class lazymap(object): |
1083 | 142 """a lazy version of the node map""" |
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143 def __init__(self, parser): |
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144 self.p = parser |
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145 def load(self, key): |
323 | 146 if self.p.all: return |
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147 n = self.p.data.find(key) |
1214 | 148 if n < 0: |
149 raise KeyError(key) | |
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150 pos = n / self.p.s |
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151 self.p.load(pos) |
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152 def __contains__(self, key): |
323 | 153 self.p.load() |
154 return key in self.p.map | |
97 | 155 def __iter__(self): |
469 | 156 yield nullid |
97 | 157 for i in xrange(self.p.l): |
158 try: | |
2072 | 159 yield self.p.index[i][-1] |
97 | 160 except: |
161 self.p.load(i) | |
2072 | 162 yield self.p.index[i][-1] |
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163 def __getitem__(self, key): |
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164 try: |
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165 return self.p.map[key] |
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166 except KeyError: |
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167 try: |
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168 self.load(key) |
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169 return self.p.map[key] |
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170 except KeyError: |
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171 raise KeyError("node " + hex(key)) |
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172 def __setitem__(self, key, val): |
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173 self.p.map[key] = val |
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174 def __delitem__(self, key): |
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175 del self.p.map[key] |
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176 |
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177 class RevlogError(Exception): pass |
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178 |
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179 class revlog(object): |
1083 | 180 """ |
181 the underlying revision storage object | |
182 | |
183 A revlog consists of two parts, an index and the revision data. | |
184 | |
185 The index is a file with a fixed record size containing | |
186 information on each revision, includings its nodeid (hash), the | |
187 nodeids of its parents, the position and offset of its data within | |
188 the data file, and the revision it's based on. Finally, each entry | |
189 contains a linkrev entry that can serve as a pointer to external | |
190 data. | |
191 | |
192 The revision data itself is a linear collection of data chunks. | |
193 Each chunk represents a revision and is usually represented as a | |
194 delta against the previous chunk. To bound lookup time, runs of | |
195 deltas are limited to about 2 times the length of the original | |
196 version data. This makes retrieval of a version proportional to | |
197 its size, or O(1) relative to the number of revisions. | |
198 | |
199 Both pieces of the revlog are written to in an append-only | |
200 fashion, which means we never need to rewrite a file to insert or | |
201 remove data, and can use some simple techniques to avoid the need | |
202 for locking while reading. | |
203 """ | |
2072 | 204 def __init__(self, opener, indexfile, datafile, defversion=0): |
1083 | 205 """ |
206 create a revlog object | |
207 | |
208 opener is a function that abstracts the file opening operation | |
209 and can be used to implement COW semantics or the like. | |
210 """ | |
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211 self.indexfile = indexfile |
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212 self.datafile = datafile |
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213 self.opener = opener |
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214 |
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215 self.indexstat = None |
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216 self.cache = None |
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217 self.chunkcache = None |
2072 | 218 self.defversion = defversion |
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219 self.load() |
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220 |
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221 def load(self): |
2072 | 222 v = self.defversion |
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223 try: |
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224 f = self.opener(self.indexfile) |
2072 | 225 i = f.read() |
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226 except IOError, inst: |
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227 if inst.errno != errno.ENOENT: |
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228 raise |
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229 i = "" |
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230 else: |
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231 try: |
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232 st = os.fstat(f.fileno()) |
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233 except AttributeError, inst: |
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234 st = None |
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235 else: |
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236 oldst = self.indexstat |
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237 if (oldst and st.st_dev == oldst.st_dev |
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238 and st.st_ino == oldst.st_ino |
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239 and st.st_mtime == oldst.st_mtime |
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240 and st.st_ctime == oldst.st_ctime): |
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241 return |
2072 | 242 self.indexstat = st |
243 if len(i) > 0: | |
244 v = struct.unpack(versionformat, i[:4])[0] | |
2073 | 245 flags = v & ~0xFFFF |
246 fmt = v & 0xFFFF | |
247 if fmt == 0: | |
248 if flags: | |
249 raise RevlogError(_("index %s invalid flags %x for format v0" % | |
250 (self.indexfile, flags))) | |
251 elif fmt == REVLOGNG: | |
252 if flags & ~REVLOGNGINLINEDATA: | |
253 raise RevlogError(_("index %s invalid flags %x for revlogng" % | |
254 (self.indexfile, flags))) | |
255 else: | |
256 raise RevlogError(_("index %s invalid format %d" % | |
257 (self.indexfile, fmt))) | |
2072 | 258 self.version = v |
259 if v == 0: | |
260 self.indexformat = indexformatv0 | |
261 else: | |
262 self.indexformat = indexformatng | |
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263 |
2072 | 264 if i: |
2073 | 265 if not self.inlinedata() and st and st.st_size > 10000: |
2072 | 266 # big index, let's parse it on demand |
267 parser = lazyparser(i, self, self.indexformat) | |
268 self.index = lazyindex(parser) | |
269 self.nodemap = lazymap(parser) | |
270 else: | |
271 self.parseindex(i) | |
2073 | 272 if self.inlinedata(): |
273 # we've already got the entire data file read in, save it | |
274 # in the chunk data | |
275 self.chunkcache = (0, i) | |
2072 | 276 if self.version != 0: |
277 e = list(self.index[0]) | |
278 type = self.ngtype(e[0]) | |
279 e[0] = self.offset_type(0, type) | |
280 self.index[0] = e | |
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281 else: |
2072 | 282 self.nodemap = { nullid: -1} |
283 self.index = [] | |
284 | |
285 | |
286 def parseindex(self, data): | |
287 s = struct.calcsize(self.indexformat) | |
288 l = len(data) | |
289 self.index = [] | |
290 self.nodemap = {nullid: -1} | |
2073 | 291 inline = self.inlinedata() |
2072 | 292 off = 0 |
293 n = 0 | |
294 while off < l: | |
295 e = struct.unpack(self.indexformat, data[off:off + s]) | |
296 self.index.append(e) | |
297 self.nodemap[e[-1]] = n | |
298 n += 1 | |
299 off += s | |
2073 | 300 if inline: |
301 off += e[1] | |
116
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302 |
2072 | 303 def ngoffset(self, q): |
304 if q & 0xFFFF: | |
305 raise RevlogError(_('%s: incompatible revision flag %x') % | |
306 (self.indexfile, type)) | |
307 return long(q >> 16) | |
308 | |
309 def ngtype(self, q): | |
310 return int(q & 0xFFFF) | |
116
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311 |
2072 | 312 def offset_type(self, offset, type): |
313 return long(long(offset) << 16 | type) | |
314 | |
315 def loadindexmap(self): | |
316 """loads both the map and the index from the lazy parser""" | |
317 if isinstance(self.index, lazyindex): | |
318 p = self.index.p | |
319 p.load() | |
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320 |
2073 | 321 def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
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322 def tip(self): return self.node(len(self.index) - 1) |
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323 def count(self): return len(self.index) |
2072 | 324 def node(self, rev): |
325 return (rev < 0) and nullid or self.index[rev][-1] | |
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326 def rev(self, node): |
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327 try: |
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328 return self.nodemap[node] |
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329 except KeyError: |
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330 raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) |
2072 | 331 def linkrev(self, node): return self.index[self.rev(node)][-4] |
2 | 332 def parents(self, node): |
333 if node == nullid: return (nullid, nullid) | |
2072 | 334 r = self.rev(node) |
335 d = self.index[r][-3:-1] | |
336 if self.version == 0: | |
337 return d | |
338 return [ self.node(x) for x in d ] | |
339 def start(self, rev): | |
340 if rev < 0: | |
341 return -1 | |
342 if self.version != 0: | |
343 return self.ngoffset(self.index[rev][0]) | |
344 return self.index[rev][0] | |
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345 |
2072 | 346 def end(self, rev): return self.start(rev) + self.length(rev) |
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347 |
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348 def size(self, rev): |
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349 """return the length of the uncompressed text for a given revision""" |
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350 l = -1 |
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351 if self.version != 0: |
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352 l = self.index[rev][2] |
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353 if l >= 0: |
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354 return l |
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355 |
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356 t = self.revision(self.node(rev)) |
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357 return len(t) |
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358 |
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359 # alternate implementation, The advantage to this code is it |
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360 # will be faster for a single revision. But, the results are not |
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361 # cached, so finding the size of every revision will be slower. |
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362 """ |
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363 if self.cache and self.cache[1] == rev: |
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364 return len(self.cache[2]) |
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365 |
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366 base = self.base(rev) |
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367 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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368 base = self.cache[1] |
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369 text = self.cache[2] |
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370 else: |
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371 text = self.revision(self.node(base)) |
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372 |
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373 l = len(text) |
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374 for x in xrange(base + 1, rev + 1): |
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375 l = mdiff.patchedsize(l, self.chunk(x)) |
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376 return l |
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377 """ |
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378 |
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379 def length(self, rev): |
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380 if rev < 0: |
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381 return 0 |
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382 else: |
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383 return self.index[rev][1] |
2072 | 384 def base(self, rev): return (rev < 0) and rev or self.index[rev][-5] |
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385 |
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386 def reachable(self, rev, stop=None): |
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387 reachable = {} |
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388 visit = [rev] |
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389 reachable[rev] = 1 |
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390 if stop: |
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391 stopn = self.rev(stop) |
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392 else: |
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393 stopn = 0 |
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394 while visit: |
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395 n = visit.pop(0) |
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396 if n == stop: |
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397 continue |
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398 if n == nullid: |
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399 continue |
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400 for p in self.parents(n): |
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401 if self.rev(p) < stopn: |
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402 continue |
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403 if p not in reachable: |
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404 reachable[p] = 1 |
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405 visit.append(p) |
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406 return reachable |
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407 |
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408 def nodesbetween(self, roots=None, heads=None): |
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409 """Return a tuple containing three elements. Elements 1 and 2 contain |
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410 a final list bases and heads after all the unreachable ones have been |
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411 pruned. Element 0 contains a topologically sorted list of all |
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412 |
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413 nodes that satisfy these constraints: |
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414 1. All nodes must be descended from a node in roots (the nodes on |
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415 roots are considered descended from themselves). |
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416 2. All nodes must also be ancestors of a node in heads (the nodes in |
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417 heads are considered to be their own ancestors). |
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418 |
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419 If roots is unspecified, nullid is assumed as the only root. |
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420 If heads is unspecified, it is taken to be the output of the |
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421 heads method (i.e. a list of all nodes in the repository that |
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422 have no children).""" |
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423 nonodes = ([], [], []) |
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424 if roots is not None: |
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425 roots = list(roots) |
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426 if not roots: |
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427 return nonodes |
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428 lowestrev = min([self.rev(n) for n in roots]) |
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429 else: |
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430 roots = [nullid] # Everybody's a descendent of nullid |
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431 lowestrev = -1 |
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432 if (lowestrev == -1) and (heads is None): |
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433 # We want _all_ the nodes! |
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434 return ([self.node(r) for r in xrange(0, self.count())], |
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435 [nullid], list(self.heads())) |
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436 if heads is None: |
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437 # All nodes are ancestors, so the latest ancestor is the last |
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438 # node. |
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439 highestrev = self.count() - 1 |
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440 # Set ancestors to None to signal that every node is an ancestor. |
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441 ancestors = None |
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442 # Set heads to an empty dictionary for later discovery of heads |
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443 heads = {} |
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444 else: |
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445 heads = list(heads) |
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446 if not heads: |
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447 return nonodes |
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448 ancestors = {} |
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449 # Start at the top and keep marking parents until we're done. |
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450 nodestotag = heads[:] |
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451 # Turn heads into a dictionary so we can remove 'fake' heads. |
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452 # Also, later we will be using it to filter out the heads we can't |
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453 # find from roots. |
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454 heads = dict.fromkeys(heads, 0) |
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455 # Remember where the top was so we can use it as a limit later. |
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456 highestrev = max([self.rev(n) for n in nodestotag]) |
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457 while nodestotag: |
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458 # grab a node to tag |
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459 n = nodestotag.pop() |
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460 # Never tag nullid |
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461 if n == nullid: |
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462 continue |
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463 # A node's revision number represents its place in a |
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464 # topologically sorted list of nodes. |
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465 r = self.rev(n) |
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466 if r >= lowestrev: |
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467 if n not in ancestors: |
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468 # If we are possibly a descendent of one of the roots |
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469 # and we haven't already been marked as an ancestor |
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470 ancestors[n] = 1 # Mark as ancestor |
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471 # Add non-nullid parents to list of nodes to tag. |
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472 nodestotag.extend([p for p in self.parents(n) if |
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473 p != nullid]) |
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474 elif n in heads: # We've seen it before, is it a fake head? |
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475 # So it is, real heads should not be the ancestors of |
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476 # any other heads. |
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477 heads.pop(n) |
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478 if not ancestors: |
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479 return nonodes |
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480 # Now that we have our set of ancestors, we want to remove any |
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481 # roots that are not ancestors. |
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482 |
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483 # If one of the roots was nullid, everything is included anyway. |
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484 if lowestrev > -1: |
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485 # But, since we weren't, let's recompute the lowest rev to not |
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486 # include roots that aren't ancestors. |
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487 |
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488 # Filter out roots that aren't ancestors of heads |
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489 roots = [n for n in roots if n in ancestors] |
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490 # Recompute the lowest revision |
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491 if roots: |
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492 lowestrev = min([self.rev(n) for n in roots]) |
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493 else: |
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494 # No more roots? Return empty list |
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495 return nonodes |
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496 else: |
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497 # We are descending from nullid, and don't need to care about |
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498 # any other roots. |
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499 lowestrev = -1 |
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500 roots = [nullid] |
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501 # Transform our roots list into a 'set' (i.e. a dictionary where the |
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502 # values don't matter. |
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503 descendents = dict.fromkeys(roots, 1) |
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504 # Also, keep the original roots so we can filter out roots that aren't |
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505 # 'real' roots (i.e. are descended from other roots). |
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506 roots = descendents.copy() |
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507 # Our topologically sorted list of output nodes. |
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508 orderedout = [] |
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509 # Don't start at nullid since we don't want nullid in our output list, |
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510 # and if nullid shows up in descedents, empty parents will look like |
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511 # they're descendents. |
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512 for r in xrange(max(lowestrev, 0), highestrev + 1): |
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513 n = self.node(r) |
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514 isdescendent = False |
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515 if lowestrev == -1: # Everybody is a descendent of nullid |
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516 isdescendent = True |
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517 elif n in descendents: |
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518 # n is already a descendent |
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519 isdescendent = True |
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520 # This check only needs to be done here because all the roots |
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521 # will start being marked is descendents before the loop. |
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522 if n in roots: |
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523 # If n was a root, check if it's a 'real' root. |
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524 p = tuple(self.parents(n)) |
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525 # If any of its parents are descendents, it's not a root. |
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526 if (p[0] in descendents) or (p[1] in descendents): |
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527 roots.pop(n) |
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528 else: |
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529 p = tuple(self.parents(n)) |
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530 # A node is a descendent if either of its parents are |
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531 # descendents. (We seeded the dependents list with the roots |
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532 # up there, remember?) |
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533 if (p[0] in descendents) or (p[1] in descendents): |
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534 descendents[n] = 1 |
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535 isdescendent = True |
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536 if isdescendent and ((ancestors is None) or (n in ancestors)): |
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537 # Only include nodes that are both descendents and ancestors. |
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538 orderedout.append(n) |
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539 if (ancestors is not None) and (n in heads): |
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540 # We're trying to figure out which heads are reachable |
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541 # from roots. |
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542 # Mark this head as having been reached |
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543 heads[n] = 1 |
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544 elif ancestors is None: |
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545 # Otherwise, we're trying to discover the heads. |
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546 # Assume this is a head because if it isn't, the next step |
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547 # will eventually remove it. |
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548 heads[n] = 1 |
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549 # But, obviously its parents aren't. |
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550 for p in self.parents(n): |
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551 heads.pop(p, None) |
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552 heads = [n for n in heads.iterkeys() if heads[n] != 0] |
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553 roots = roots.keys() |
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554 assert orderedout |
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555 assert roots |
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556 assert heads |
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557 return (orderedout, roots, heads) |
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558 |
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559 def heads(self, start=None): |
1550
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560 """return the list of all nodes that have no children |
1551
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561 |
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562 if start is specified, only heads that are descendants of |
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563 start will be returned |
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564 |
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565 """ |
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566 if start is None: |
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567 start = nullid |
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568 reachable = {start: 1} |
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569 heads = {start: 1} |
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570 startrev = self.rev(start) |
1083 | 571 |
1550
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572 for r in xrange(startrev + 1, self.count()): |
221 | 573 n = self.node(r) |
574 for pn in self.parents(n): | |
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575 if pn in reachable: |
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576 reachable[n] = 1 |
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577 heads[n] = 1 |
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578 if pn in heads: |
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579 del heads[pn] |
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580 return heads.keys() |
370 | 581 |
582 def children(self, node): | |
1083 | 583 """find the children of a given node""" |
370 | 584 c = [] |
585 p = self.rev(node) | |
586 for r in range(p + 1, self.count()): | |
587 n = self.node(r) | |
588 for pn in self.parents(n): | |
854
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589 if pn == node: |
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590 c.append(n) |
370 | 591 continue |
592 elif pn == nullid: | |
593 continue | |
594 return c | |
515 | 595 |
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596 def lookup(self, id): |
1083 | 597 """locate a node based on revision number or subset of hex nodeid""" |
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598 try: |
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599 rev = int(id) |
469 | 600 if str(rev) != id: raise ValueError |
601 if rev < 0: rev = self.count() + rev | |
476
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602 if rev < 0 or rev >= self.count(): raise ValueError |
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603 return self.node(rev) |
469 | 604 except (ValueError, OverflowError): |
36
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605 c = [] |
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606 for n in self.nodemap: |
469 | 607 if hex(n).startswith(id): |
36
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608 c.append(n) |
1402
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609 if len(c) > 1: raise RevlogError(_("Ambiguous identifier")) |
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610 if len(c) < 1: raise RevlogError(_("No match found")) |
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611 return c[0] |
515 | 612 |
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613 return None |
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614 |
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615 def diff(self, a, b): |
1083 | 616 """return a delta between two revisions""" |
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617 return mdiff.textdiff(a, b) |
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618 |
73 | 619 def patches(self, t, pl): |
1083 | 620 """apply a list of patches to a string""" |
73 | 621 return mdiff.patches(t, pl) |
622 | |
2072 | 623 def chunk(self, rev, df=None, cachelen=4096): |
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624 start, length = self.start(rev), self.length(rev) |
2073 | 625 inline = self.inlinedata() |
626 if inline: | |
627 start += (rev + 1) * struct.calcsize(self.indexformat) | |
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628 end = start + length |
2072 | 629 def loadcache(df): |
630 cache_length = max(cachelen, length) # 4k | |
631 if not df: | |
2073 | 632 if inline: |
633 df = self.opener(self.indexfile) | |
634 else: | |
635 df = self.opener(self.datafile) | |
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636 df.seek(start) |
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637 self.chunkcache = (start, df.read(cache_length)) |
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638 |
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639 if not self.chunkcache: |
2072 | 640 loadcache(df) |
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641 |
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642 cache_start = self.chunkcache[0] |
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643 cache_end = cache_start + len(self.chunkcache[1]) |
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644 if start >= cache_start and end <= cache_end: |
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645 # it is cached |
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646 offset = start - cache_start |
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647 else: |
2072 | 648 loadcache(df) |
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649 offset = 0 |
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650 |
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651 #def checkchunk(): |
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652 # df = self.opener(self.datafile) |
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653 # df.seek(start) |
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654 # return df.read(length) |
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655 #assert s == checkchunk() |
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656 return decompress(self.chunkcache[1][offset:offset + length]) |
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657 |
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658 def delta(self, node): |
1083 | 659 """return or calculate a delta between a node and its predecessor""" |
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660 r = self.rev(node) |
1941
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661 return self.revdiff(r - 1, r) |
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662 |
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663 def revdiff(self, rev1, rev2): |
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664 """return or calculate a delta between two revisions""" |
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665 b1 = self.base(rev1) |
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666 b2 = self.base(rev2) |
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667 if b1 == b2 and rev1 + 1 == rev2: |
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668 return self.chunk(rev2) |
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669 else: |
1941
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670 return self.diff(self.revision(self.node(rev1)), |
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671 self.revision(self.node(rev2))) |
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672 |
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673 def revision(self, node): |
1083 | 674 """return an uncompressed revision of a given""" |
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675 if node == nullid: return "" |
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676 if self.cache and self.cache[0] == node: return self.cache[2] |
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677 |
1083 | 678 # look up what we need to read |
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679 text = None |
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680 rev = self.rev(node) |
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681 base = self.base(rev) |
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682 |
2073 | 683 if self.inlinedata(): |
684 # we probably have the whole chunk cached | |
685 df = None | |
686 else: | |
687 df = self.opener(self.datafile) | |
2072 | 688 |
1083 | 689 # do we have useful data cached? |
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690 if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
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691 base = self.cache[1] |
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692 text = self.cache[2] |
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693 else: |
2072 | 694 text = self.chunk(base, df=df) |
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|
695 |
71
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696 bins = [] |
64 | 697 for r in xrange(base + 1, rev + 1): |
2072 | 698 bins.append(self.chunk(r, df=df)) |
0
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699 |
1941
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|
700 text = self.patches(text, bins) |
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701 |
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702 p1, p2 = self.parents(node) |
26 | 703 if node != hash(text, p1, p2): |
1402
9d2c2e6b32b5
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704 raise RevlogError(_("integrity check failed on %s:%d") |
98 | 705 % (self.datafile, rev)) |
0
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706 |
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707 self.cache = (node, rev, text) |
515 | 708 return text |
0
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|
709 |
2075
343aeefb553b
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2073
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|
710 def checkinlinesize(self, tr, fp=None): |
2073 | 711 if not self.inlinedata(): |
712 return | |
2075
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713 if not fp: |
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714 fp = self.opener(self.indexfile, 'r') |
2073 | 715 size = fp.tell() |
716 if size < 131072: | |
717 return | |
718 tr.add(self.datafile, 0) | |
719 df = self.opener(self.datafile, 'w') | |
720 calc = struct.calcsize(self.indexformat) | |
721 for r in xrange(self.count()): | |
722 start = self.start(r) + (r + 1) * calc | |
723 length = self.length(r) | |
724 fp.seek(start) | |
725 d = fp.read(length) | |
726 df.write(d) | |
727 fp.close() | |
728 df.close() | |
2076
d007df6daf8e
Create an atomic opener that does not automatically rename on close
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diff
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|
729 fp = self.opener(self.indexfile, 'w', atomictemp=True) |
2073 | 730 self.version &= ~(REVLOGNGINLINEDATA) |
731 if self.count(): | |
732 x = self.index[0] | |
733 e = struct.pack(self.indexformat, *x)[4:] | |
734 l = struct.pack(versionformat, self.version) | |
735 fp.write(l) | |
736 fp.write(e) | |
737 | |
738 for i in xrange(1, self.count()): | |
739 x = self.index[i] | |
740 e = struct.pack(self.indexformat, *x) | |
741 fp.write(e) | |
742 | |
2076
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parents:
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diff
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743 # if we don't call rename, the temp file will never replace the |
d007df6daf8e
Create an atomic opener that does not automatically rename on close
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parents:
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744 # real index |
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745 fp.rename() |
2073 | 746 self.chunkcache = None |
747 | |
644 | 748 def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
1083 | 749 """add a revision to the log |
750 | |
751 text - the revision data to add | |
752 transaction - the transaction object used for rollback | |
753 link - the linkrev data to add | |
754 p1, p2 - the parent nodeids of the revision | |
755 d - an optional precomputed delta | |
756 """ | |
0
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757 if text is None: text = "" |
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758 if p1 is None: p1 = self.tip() |
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759 if p2 is None: p2 = nullid |
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760 |
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761 node = hash(text, p1, p2) |
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762 |
301 | 763 if node in self.nodemap: |
764 return node | |
765 | |
0
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|
766 n = self.count() |
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|
767 t = n - 1 |
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|
768 |
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769 if n: |
64 | 770 base = self.base(t) |
771 start = self.start(base) | |
0
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772 end = self.end(t) |
644 | 773 if not d: |
774 prev = self.revision(self.tip()) | |
1533
3d11f81c9145
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775 d = self.diff(prev, str(text)) |
98 | 776 data = compress(d) |
1533
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|
777 l = len(data[1]) + len(data[0]) |
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|
778 dist = end - start + l |
0
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|
779 |
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|
780 # full versions are inserted when the needed deltas |
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|
781 # become comparable to the uncompressed text |
64 | 782 if not n or dist > len(text) * 2: |
0
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783 data = compress(text) |
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784 l = len(data[1]) + len(data[0]) |
0
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785 base = n |
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786 else: |
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787 base = self.base(t) |
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788 |
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789 offset = 0 |
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790 if t >= 0: |
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791 offset = self.end(t) |
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792 |
2072 | 793 if self.version == 0: |
794 e = (offset, l, base, link, p1, p2, node) | |
795 else: | |
796 e = (self.offset_type(offset, 0), l, len(text), | |
797 base, link, self.rev(p1), self.rev(p2), node) | |
515 | 798 |
0
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799 self.index.append(e) |
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800 self.nodemap[node] = n |
2072 | 801 entry = struct.pack(self.indexformat, *e) |
0
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802 |
2073 | 803 if not self.inlinedata(): |
804 transaction.add(self.datafile, offset) | |
805 transaction.add(self.indexfile, n * len(entry)) | |
806 f = self.opener(self.datafile, "a") | |
807 if data[0]: | |
808 f.write(data[0]) | |
809 f.write(data[1]) | |
810 f = self.opener(self.indexfile, "a") | |
811 else: | |
812 f = self.opener(self.indexfile, "a+") | |
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813 f.seek(0, 2) |
2073 | 814 transaction.add(self.indexfile, f.tell()) |
2072 | 815 |
816 if len(self.index) == 1 and self.version != 0: | |
817 l = struct.pack(versionformat, self.version) | |
818 f.write(l) | |
819 entry = entry[4:] | |
820 | |
821 f.write(entry) | |
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822 |
2073 | 823 if self.inlinedata(): |
824 f.write(data[0]) | |
825 f.write(data[1]) | |
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826 self.checkinlinesize(transaction, f) |
2073 | 827 |
0
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828 self.cache = (node, n, text) |
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829 return node |
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|
830 |
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831 def ancestor(self, a, b): |
1083 | 832 """calculate the least common ancestor of nodes a and b""" |
147 | 833 # calculate the distance of every node from root |
834 dist = {nullid: 0} | |
835 for i in xrange(self.count()): | |
836 n = self.node(i) | |
837 p1, p2 = self.parents(n) | |
838 dist[n] = max(dist[p1], dist[p2]) + 1 | |
515 | 839 |
147 | 840 # traverse ancestors in order of decreasing distance from root |
841 def ancestors(node): | |
842 # we store negative distances because heap returns smallest member | |
843 h = [(-dist[node], node)] | |
844 seen = {} | |
845 while h: | |
846 d, n = heapq.heappop(h) | |
847 if n not in seen: | |
848 seen[n] = 1 | |
1351
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849 yield (-d, n) |
147 | 850 for p in self.parents(n): |
851 heapq.heappush(h, (-dist[p], p)) | |
45
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852 |
1351
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853 def generations(node): |
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854 sg, s = None, {} |
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855 for g,n in ancestors(node): |
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856 if g != sg: |
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857 if sg: |
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858 yield sg, s |
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859 sg, s = g, {n:1} |
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860 else: |
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861 s[n] = 1 |
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862 yield sg, s |
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863 |
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864 x = generations(a) |
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865 y = generations(b) |
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866 gx = x.next() |
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867 gy = y.next() |
45
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868 |
147 | 869 # increment each ancestor list until it is closer to root than |
870 # the other, or they match | |
871 while 1: | |
1351
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872 #print "ancestor gen %s %s" % (gx[0], gy[0]) |
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873 if gx[0] == gy[0]: |
0e2be889ccd7
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|
874 # find the intersection |
0e2be889ccd7
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875 i = [ n for n in gx[1] if n in gy[1] ] |
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876 if i: |
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877 return i[0] |
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878 else: |
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|
879 #print "next" |
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880 gy = y.next() |
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881 gx = x.next() |
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882 elif gx[0] < gy[0]: |
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|
883 #print "next y" |
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884 gy = y.next() |
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885 else: |
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886 #print "next x" |
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887 gx = x.next() |
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888 |
1598
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889 def group(self, nodelist, lookup, infocollect=None): |
1083 | 890 """calculate a delta group |
46 | 891 |
1083 | 892 Given a list of changeset revs, return a set of deltas and |
893 metadata corresponding to nodes. the first delta is | |
894 parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
895 have this parent as it has all history before these | |
896 changesets. parent is parent[0] | |
897 """ | |
1458
1033892bbb87
This changes the revlog.group and re-implements the localrepo.changeroup
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|
898 revs = [self.rev(n) for n in nodelist] |
46 | 899 |
900 # if we don't have any revisions touched by these changesets, bail | |
192 | 901 if not revs: |
1981
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902 yield changegroup.closechunk() |
192 | 903 return |
46 | 904 |
905 # add the parent of the first rev | |
906 p = self.parents(self.node(revs[0]))[0] | |
907 revs.insert(0, self.rev(p)) | |
908 | |
909 # build deltas | |
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910 for d in xrange(0, len(revs) - 1): |
46 | 911 a, b = revs[d], revs[d + 1] |
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912 nb = self.node(b) |
192 | 913 |
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914 if infocollect is not None: |
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915 infocollect(nb) |
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916 |
1941
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917 d = self.revdiff(a, b) |
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918 p = self.parents(nb) |
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cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1559
diff
changeset
|
919 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
|
920 yield changegroup.genchunk("%s%s" % (meta, d)) |
46 | 921 |
1981
736b6c96bbbc
make incoming work via ssh (issue139); move chunk code into separate module.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1941
diff
changeset
|
922 yield changegroup.closechunk() |
192 | 923 |
1062 | 924 def addgroup(self, revs, linkmapper, transaction, unique=0): |
1083 | 925 """ |
926 add a delta group | |
46 | 927 |
1083 | 928 given a set of deltas, add them to the revision log. the |
929 first delta is against its parent, which should be in our | |
930 log, the rest are against the previous delta. | |
931 """ | |
932 | |
933 #track the base of the current delta log | |
46 | 934 r = self.count() |
935 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
|
936 node = None |
515 | 937 |
655 | 938 base = prev = -1 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
939 start = end = textlen = 0 |
46 | 940 if r: |
941 end = self.end(t) | |
942 | |
2072 | 943 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
|
944 ifh.seek(0, 2) |
2072 | 945 transaction.add(self.indexfile, ifh.tell()) |
2073 | 946 if self.inlinedata(): |
947 dfh = None | |
948 else: | |
949 transaction.add(self.datafile, end) | |
950 dfh = self.opener(self.datafile, "a") | |
46 | 951 |
952 # loop through our set of deltas | |
192 | 953 chain = None |
954 for chunk in revs: | |
955 node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
94 | 956 link = linkmapper(cs) |
77 | 957 if node in self.nodemap: |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
958 # 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
|
959 # 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
|
960 # 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
|
961 chain = node |
224
ccbcc4d76f81
fix bad assumption about uniqueness of file versions
mpm@selenic.com
parents:
221
diff
changeset
|
962 continue |
192 | 963 delta = chunk[80:] |
964 | |
1509
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
965 for p in (p1, p2): |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
966 if not p in self.nodemap: |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
967 raise RevlogError(_("unknown parent %s") % short(p1)) |
46a07392cf28
Add safety check for addgroup
Matt Mackall <mpm@selenic.com>
parents:
1494
diff
changeset
|
968 |
192 | 969 if not chain: |
970 # retrieve the parent revision of the delta chain | |
971 chain = p1 | |
972 if not chain in self.nodemap: | |
1402
9d2c2e6b32b5
i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1400
diff
changeset
|
973 raise RevlogError(_("unknown base %s") % short(chain[:4])) |
46 | 974 |
975 # full versions are inserted when the needed deltas become | |
976 # comparable to the uncompressed text or when the previous | |
977 # version is not the one we have a delta against. We use | |
978 # the size of the previous full rev as a proxy for the | |
979 # current size. | |
980 | |
981 if chain == prev: | |
1533
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
982 tempd = compress(delta) |
3d11f81c9145
Reduce string duplication in compression code
mason@suse.com
parents:
1509
diff
changeset
|
983 cdelta = tempd[0] + tempd[1] |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
984 textlen = mdiff.patchedsize(textlen, delta) |
46 | 985 |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
986 if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
46 | 987 # flush our writes here so we can read it in revision |
2072 | 988 if dfh: |
989 dfh.flush() | |
46 | 990 ifh.flush() |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
991 text = self.revision(chain) |
73 | 992 text = self.patches(text, [delta]) |
46 | 993 chk = self.addrevision(text, transaction, link, p1, p2) |
994 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
|
995 raise RevlogError(_("consistency error adding group")) |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
996 textlen = len(text) |
46 | 997 else: |
2072 | 998 if self.version == 0: |
999 e = (end, len(cdelta), base, link, p1, p2, node) | |
1000 else: | |
2078
441ea218414e
Fill in the uncompressed size during revlog.addgroup
mason@suse.com
parents:
2077
diff
changeset
|
1001 e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
2072 | 1002 link, self.rev(p1), self.rev(p2), node) |
46 | 1003 self.index.append(e) |
1004 self.nodemap[node] = r | |
2073 | 1005 if self.inlinedata(): |
1006 ifh.write(struct.pack(self.indexformat, *e)) | |
1007 ifh.write(cdelta) | |
2075
343aeefb553b
Make the appendfile class inline-data index friendly
mason@suse.com
parents:
2073
diff
changeset
|
1008 self.checkinlinesize(transaction, ifh) |
2073 | 1009 if not self.inlinedata(): |
1010 dfh = self.opener(self.datafile, "a") | |
1011 ifh = self.opener(self.indexfile, "a") | |
1012 else: | |
1013 if not dfh: | |
1014 # addrevision switched from inline to conventional | |
1015 # reopen the index | |
1016 dfh = self.opener(self.datafile, "a") | |
1017 ifh = self.opener(self.indexfile, "a") | |
1018 dfh.write(cdelta) | |
1019 ifh.write(struct.pack(self.indexformat, *e)) | |
46 | 1020 |
65
d40cc5aacc31
Fix up a bunch of bugs in the new merge code
mpm@selenic.com
parents:
64
diff
changeset
|
1021 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
|
1022 base = self.base(t) |
d457fec76ab0
fix warnings from pychecker (unused variables and shadowing)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
1711
diff
changeset
|
1023 start = self.start(base) |
46 | 1024 end = self.end(t) |
1025 | |
2002
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1981
diff
changeset
|
1026 if node is None: |
4aab906517c6
Calling revlog.addgroup with an empty changegroup now raises RevlogError.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1981
diff
changeset
|
1027 raise RevlogError(_("group to be added is empty")) |
46 | 1028 return node |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1029 |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1030 def strip(self, rev, minlink): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1031 if self.count() == 0 or rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1032 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1033 |
2072 | 1034 if isinstance(self.index, lazyindex): |
1035 self.loadindexmap() | |
1036 | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1037 # 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
|
1038 # does not actually belong to an older changeset. |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1039 # The minlink parameter defines the oldest revision |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1040 # we're allowed to strip away. |
2072 | 1041 while minlink > self.index[rev][-4]: |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1042 rev += 1 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1043 if rev >= self.count(): |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1044 return |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1045 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1046 # first truncate the files on disk |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1047 end = self.start(rev) |
2073 | 1048 if not self.inlinedata(): |
1049 df = self.opener(self.datafile, "a") | |
1050 df.truncate(end) | |
1051 end = rev * struct.calcsize(self.indexformat) | |
1052 else: | |
1053 end += rev * struct.calcsize(self.indexformat) | |
2072 | 1054 |
1055 indexf = self.opener(self.indexfile, "a") | |
1056 indexf.truncate(end) | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1057 |
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1058 # 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
|
1059 self.cache = None |
1711 | 1060 self.chunkcache = None |
2072 | 1061 for x in xrange(rev, self.count()): |
1062 del self.nodemap[self.node(x)] | |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1063 |
2072 | 1064 del self.index[rev:] |
1535
7ae0ce7a3dc4
Add revlog.strip to truncate away revisions.
mason@suse.com
parents:
1533
diff
changeset
|
1065 |
1493
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1066 def checksize(self): |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1067 expected = 0 |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1068 if self.count(): |
1a216cb4ee64
verify: add check for mismatch of index and data length
Matt Mackall <mpm@selenic.com>
parents:
1469
diff
changeset
|
1069 expected = self.end(self.count() - 1) |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1070 |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1071 try: |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1072 f = self.opener(self.datafile) |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1073 f.seek(0, 2) |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1074 actual = f.tell() |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1075 dd = actual - expected |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1076 except IOError, inst: |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1077 if inst.errno != errno.ENOENT: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1078 raise |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1079 dd = 0 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1080 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1081 try: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1082 f = self.opener(self.indexfile) |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1083 f.seek(0, 2) |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1084 actual = f.tell() |
2072 | 1085 s = struct.calcsize(self.indexformat) |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1086 i = actual / s |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1087 di = actual - (i * s) |
2073 | 1088 if self.inlinedata(): |
1089 databytes = 0 | |
1090 for r in xrange(self.count()): | |
1091 databytes += self.length(r) | |
1092 dd = 0 | |
1093 di = actual - self.count() * s - databytes | |
1667
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1094 except IOError, inst: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1095 if inst.errno != errno.ENOENT: |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1096 raise |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1097 di = 0 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1098 |
daff3ef0de8d
verify: notice extra data in indices
Matt Mackall <mpm@selenic.com>
parents:
1660
diff
changeset
|
1099 return (dd, di) |
1494
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1100 |
249ca10d37f4
Handle empty logs in repo.checksize
Matt Mackall <mpm@selenic.com>
parents:
1493
diff
changeset
|
1101 |