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@@ -1,1101 +1,1206 b'' | |||||
1 | """ |
|
1 | """ | |
2 | revlog.py - storage back-end for mercurial |
|
2 | revlog.py - storage back-end for mercurial | |
3 |
|
3 | |||
4 | This provides efficient delta storage with O(1) retrieve and append |
|
4 | This provides efficient delta storage with O(1) retrieve and append | |
5 | and O(changes) merge between branches |
|
5 | and O(changes) merge between branches | |
6 |
|
6 | |||
7 | Copyright 2005 Matt Mackall <mpm@selenic.com> |
|
7 | Copyright 2005 Matt Mackall <mpm@selenic.com> | |
8 |
|
8 | |||
9 | This software may be used and distributed according to the terms |
|
9 | This software may be used and distributed according to the terms | |
10 | of the GNU General Public License, incorporated herein by reference. |
|
10 | of the GNU General Public License, incorporated herein by reference. | |
11 | """ |
|
11 | """ | |
12 |
|
12 | |||
13 | from node import * |
|
13 | from node import * | |
14 | from i18n import gettext as _ |
|
14 | from i18n import gettext as _ | |
15 | from demandload import demandload |
|
15 | from demandload import demandload | |
16 | demandload(globals(), "binascii changegroup errno heapq mdiff os") |
|
16 | demandload(globals(), "binascii changegroup errno heapq mdiff os") | |
17 | demandload(globals(), "sha struct zlib") |
|
17 | demandload(globals(), "sha struct zlib") | |
18 |
|
18 | |||
19 | # revlog version strings |
|
19 | # revlog version strings | |
20 | REVLOGV0 = 0 |
|
20 | REVLOGV0 = 0 | |
21 | REVLOGNG = 1 |
|
21 | REVLOGNG = 1 | |
22 |
|
22 | |||
23 | # revlog flags |
|
23 | # revlog flags | |
24 | REVLOGNGINLINEDATA = (1 << 16) |
|
24 | REVLOGNGINLINEDATA = (1 << 16) | |
25 |
|
25 | |||
26 | def flagstr(flag): |
|
26 | def flagstr(flag): | |
27 | if flag == "inline": |
|
27 | if flag == "inline": | |
28 | return REVLOGNGINLINEDATA |
|
28 | return REVLOGNGINLINEDATA | |
29 | raise RevlogError(_("unknown revlog flag %s" % flag)) |
|
29 | raise RevlogError(_("unknown revlog flag %s" % flag)) | |
30 |
|
30 | |||
31 | def hash(text, p1, p2): |
|
31 | def hash(text, p1, p2): | |
32 | """generate a hash from the given text and its parent hashes |
|
32 | """generate a hash from the given text and its parent hashes | |
33 |
|
33 | |||
34 | This hash combines both the current file contents and its history |
|
34 | This hash combines both the current file contents and its history | |
35 | in a manner that makes it easy to distinguish nodes with the same |
|
35 | in a manner that makes it easy to distinguish nodes with the same | |
36 | content in the revision graph. |
|
36 | content in the revision graph. | |
37 | """ |
|
37 | """ | |
38 | l = [p1, p2] |
|
38 | l = [p1, p2] | |
39 | l.sort() |
|
39 | l.sort() | |
40 | s = sha.new(l[0]) |
|
40 | s = sha.new(l[0]) | |
41 | s.update(l[1]) |
|
41 | s.update(l[1]) | |
42 | s.update(text) |
|
42 | s.update(text) | |
43 | return s.digest() |
|
43 | return s.digest() | |
44 |
|
44 | |||
45 | def compress(text): |
|
45 | def compress(text): | |
46 | """ generate a possibly-compressed representation of text """ |
|
46 | """ generate a possibly-compressed representation of text """ | |
47 | if not text: return ("", text) |
|
47 | if not text: return ("", text) | |
48 | if len(text) < 44: |
|
48 | if len(text) < 44: | |
49 | if text[0] == '\0': return ("", text) |
|
49 | if text[0] == '\0': return ("", text) | |
50 | return ('u', text) |
|
50 | return ('u', text) | |
51 | bin = zlib.compress(text) |
|
51 | bin = zlib.compress(text) | |
52 | if len(bin) > len(text): |
|
52 | if len(bin) > len(text): | |
53 | if text[0] == '\0': return ("", text) |
|
53 | if text[0] == '\0': return ("", text) | |
54 | return ('u', text) |
|
54 | return ('u', text) | |
55 | return ("", bin) |
|
55 | return ("", bin) | |
56 |
|
56 | |||
57 | def decompress(bin): |
|
57 | def decompress(bin): | |
58 | """ decompress the given input """ |
|
58 | """ decompress the given input """ | |
59 | if not bin: return bin |
|
59 | if not bin: return bin | |
60 | t = bin[0] |
|
60 | t = bin[0] | |
61 | if t == '\0': return bin |
|
61 | if t == '\0': return bin | |
62 | if t == 'x': return zlib.decompress(bin) |
|
62 | if t == 'x': return zlib.decompress(bin) | |
63 | if t == 'u': return bin[1:] |
|
63 | if t == 'u': return bin[1:] | |
64 | raise RevlogError(_("unknown compression type %r") % t) |
|
64 | raise RevlogError(_("unknown compression type %r") % t) | |
65 |
|
65 | |||
66 | indexformatv0 = ">4l20s20s20s" |
|
66 | indexformatv0 = ">4l20s20s20s" | |
|
67 | v0shaoffset = 56 | |||
67 | # index ng: |
|
68 | # index ng: | |
68 | # 6 bytes offset |
|
69 | # 6 bytes offset | |
69 | # 2 bytes flags |
|
70 | # 2 bytes flags | |
70 | # 4 bytes compressed length |
|
71 | # 4 bytes compressed length | |
71 | # 4 bytes uncompressed length |
|
72 | # 4 bytes uncompressed length | |
72 | # 4 bytes: base rev |
|
73 | # 4 bytes: base rev | |
73 | # 4 bytes link rev |
|
74 | # 4 bytes link rev | |
74 | # 4 bytes parent 1 rev |
|
75 | # 4 bytes parent 1 rev | |
75 | # 4 bytes parent 2 rev |
|
76 | # 4 bytes parent 2 rev | |
76 | # 32 bytes: nodeid |
|
77 | # 32 bytes: nodeid | |
77 | indexformatng = ">Qiiiiii20s12x" |
|
78 | indexformatng = ">Qiiiiii20s12x" | |
|
79 | ngshaoffset = 32 | |||
78 | versionformat = ">i" |
|
80 | versionformat = ">i" | |
79 |
|
81 | |||
80 | class lazyparser(object): |
|
82 | class lazyparser(object): | |
81 | """ |
|
83 | """ | |
82 | this class avoids the need to parse the entirety of large indices |
|
84 | 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 | """ |
|
85 | """ | |
90 |
def __init__(self, data, |
|
86 | def __init__(self, dataf, size, indexformat, shaoffset): | |
91 | self.data = data |
|
87 | self.dataf = dataf | |
|
88 | self.format = indexformat | |||
92 | self.s = struct.calcsize(indexformat) |
|
89 | self.s = struct.calcsize(indexformat) | |
93 | self.indexformat = indexformat |
|
90 | self.indexformat = indexformat | |
94 |
self. |
|
91 | self.datasize = size | |
|
92 | self.l = size/self.s | |||
95 | self.index = [None] * self.l |
|
93 | self.index = [None] * self.l | |
96 | self.map = {nullid: -1} |
|
94 | self.map = {nullid: -1} | |
|
95 | self.allmap = 0 | |||
97 | self.all = 0 |
|
96 | self.all = 0 | |
98 | self.revlog = revlog |
|
97 | self.mapfind_count = 0 | |
|
98 | self.shaoffset = shaoffset | |||
99 |
|
99 | |||
100 |
def load(self |
|
100 | def loadmap(self): | |
|
101 | """ | |||
|
102 | during a commit, we need to make sure the rev being added is | |||
|
103 | not a duplicate. This requires loading the entire index, | |||
|
104 | which is fairly slow. loadmap can load up just the node map, | |||
|
105 | which takes much less time. | |||
|
106 | """ | |||
|
107 | if self.allmap: return | |||
|
108 | start = 0 | |||
|
109 | end = self.datasize | |||
|
110 | self.allmap = 1 | |||
|
111 | cur = 0 | |||
|
112 | count = 0 | |||
|
113 | blocksize = self.s * 256 | |||
|
114 | self.dataf.seek(0) | |||
|
115 | while cur < end: | |||
|
116 | data = self.dataf.read(blocksize) | |||
|
117 | off = 0 | |||
|
118 | for x in xrange(256): | |||
|
119 | n = data[off + self.shaoffset:off + self.shaoffset + 20] | |||
|
120 | self.map[n] = count | |||
|
121 | count += 1 | |||
|
122 | if count >= self.l: | |||
|
123 | break | |||
|
124 | off += self.s | |||
|
125 | cur += blocksize | |||
|
126 | ||||
|
127 | def loadblock(self, blockstart, blocksize, data=None): | |||
101 | if self.all: return |
|
128 | if self.all: return | |
102 |
if |
|
129 | if data is None: | |
103 | block = pos / 1000 |
|
130 | self.dataf.seek(blockstart) | |
104 | i = block * 1000 |
|
131 | data = self.dataf.read(blocksize) | |
105 | end = min(self.l, i + 1000) |
|
132 | lend = len(data) / self.s | |
106 | else: |
|
133 | i = blockstart / self.s | |
|
134 | off = 0 | |||
|
135 | for x in xrange(lend): | |||
|
136 | if self.index[i + x] == None: | |||
|
137 | b = data[off : off + self.s] | |||
|
138 | e = struct.unpack(self.format, b) | |||
|
139 | self.index[i + x] = e | |||
|
140 | self.map[e[-1]] = i + x | |||
|
141 | off += self.s | |||
|
142 | ||||
|
143 | def findnode(self, node): | |||
|
144 | """search backwards through the index file for a specific node""" | |||
|
145 | if self.allmap: return None | |||
|
146 | ||||
|
147 | # hg log will cause many many searches for the manifest | |||
|
148 | # nodes. After we get called a few times, just load the whole | |||
|
149 | # thing. | |||
|
150 | if self.mapfind_count > 8: | |||
|
151 | self.loadmap() | |||
|
152 | if node in self.map: | |||
|
153 | return node | |||
|
154 | return None | |||
|
155 | self.mapfind_count += 1 | |||
|
156 | last = self.l - 1 | |||
|
157 | while self.index[last] != None: | |||
|
158 | if last == 0: | |||
107 | self.all = 1 |
|
159 | self.all = 1 | |
108 |
|
|
160 | self.allmap = 1 | |
109 |
en |
|
161 | return None | |
110 | self.revlog.index = self.index |
|
162 | last -= 1 | |
111 | self.revlog.nodemap = self.map |
|
163 | end = (last + 1) * self.s | |
|
164 | blocksize = self.s * 256 | |||
|
165 | while end >= 0: | |||
|
166 | start = max(end - blocksize, 0) | |||
|
167 | self.dataf.seek(start) | |||
|
168 | data = self.dataf.read(end - start) | |||
|
169 | findend = end - start | |||
|
170 | while True: | |||
|
171 | # we're searching backwards, so weh have to make sure | |||
|
172 | # we don't find a changeset where this node is a parent | |||
|
173 | off = data.rfind(node, 0, findend) | |||
|
174 | findend = off | |||
|
175 | if off >= 0: | |||
|
176 | i = off / self.s | |||
|
177 | off = i * self.s | |||
|
178 | n = data[off + self.shaoffset:off + self.shaoffset + 20] | |||
|
179 | if n == node: | |||
|
180 | self.map[n] = i + start / self.s | |||
|
181 | return node | |||
|
182 | else: | |||
|
183 | break | |||
|
184 | end -= blocksize | |||
|
185 | return None | |||
112 |
|
186 | |||
113 | while i < end: |
|
187 | def loadindex(self, i=None, end=None): | |
114 | if not self.index[i]: |
|
188 | if self.all: return | |
115 | d = self.data[i * self.s: (i + 1) * self.s] |
|
189 | all = False | |
116 | e = struct.unpack(self.indexformat, d) |
|
190 | if i == None: | |
117 | self.index[i] = e |
|
191 | blockstart = 0 | |
118 | self.map[e[-1]] = i |
|
192 | blocksize = (512 / self.s) * self.s | |
119 |
|
|
193 | end = self.datasize | |
|
194 | all = True | |||
|
195 | else: | |||
|
196 | if end: | |||
|
197 | blockstart = i * self.s | |||
|
198 | end = end * self.s | |||
|
199 | blocksize = end - blockstart | |||
|
200 | else: | |||
|
201 | blockstart = (i & ~(32)) * self.s | |||
|
202 | blocksize = self.s * 64 | |||
|
203 | end = blockstart + blocksize | |||
|
204 | while blockstart < end: | |||
|
205 | self.loadblock(blockstart, blocksize) | |||
|
206 | blockstart += blocksize | |||
|
207 | if all: self.all = True | |||
120 |
|
208 | |||
121 | class lazyindex(object): |
|
209 | class lazyindex(object): | |
122 | """a lazy version of the index array""" |
|
210 | """a lazy version of the index array""" | |
123 | def __init__(self, parser): |
|
211 | def __init__(self, parser): | |
124 | self.p = parser |
|
212 | self.p = parser | |
125 | def __len__(self): |
|
213 | def __len__(self): | |
126 | return len(self.p.index) |
|
214 | return len(self.p.index) | |
127 | def load(self, pos): |
|
215 | def load(self, pos): | |
128 | if pos < 0: |
|
216 | if pos < 0: | |
129 | pos += len(self.p.index) |
|
217 | pos += len(self.p.index) | |
130 | self.p.load(pos) |
|
218 | self.p.loadindex(pos) | |
131 | return self.p.index[pos] |
|
219 | return self.p.index[pos] | |
132 | def __getitem__(self, pos): |
|
220 | def __getitem__(self, pos): | |
133 | return self.p.index[pos] or self.load(pos) |
|
221 | return self.p.index[pos] or self.load(pos) | |
134 | def __setitem__(self, pos, item): |
|
222 | def __setitem__(self, pos, item): | |
135 | self.p.index[pos] = item |
|
223 | self.p.index[pos] = item | |
136 | def __delitem__(self, pos): |
|
224 | def __delitem__(self, pos): | |
137 | del self.p.index[pos] |
|
225 | del self.p.index[pos] | |
138 | def append(self, e): |
|
226 | def append(self, e): | |
139 | self.p.index.append(e) |
|
227 | self.p.index.append(e) | |
140 |
|
228 | |||
141 | class lazymap(object): |
|
229 | class lazymap(object): | |
142 | """a lazy version of the node map""" |
|
230 | """a lazy version of the node map""" | |
143 | def __init__(self, parser): |
|
231 | def __init__(self, parser): | |
144 | self.p = parser |
|
232 | self.p = parser | |
145 | def load(self, key): |
|
233 | def load(self, key): | |
146 | if self.p.all: return |
|
234 | n = self.p.findnode(key) | |
147 | n = self.p.data.find(key) |
|
235 | if n == None: | |
148 | if n < 0: |
|
|||
149 | raise KeyError(key) |
|
236 | raise KeyError(key) | |
150 | pos = n / self.p.s |
|
|||
151 | self.p.load(pos) |
|
|||
152 | def __contains__(self, key): |
|
237 | def __contains__(self, key): | |
153 |
self.p. |
|
238 | if key in self.p.map: | |
|
239 | return True | |||
|
240 | self.p.loadmap() | |||
154 | return key in self.p.map |
|
241 | return key in self.p.map | |
155 | def __iter__(self): |
|
242 | def __iter__(self): | |
156 | yield nullid |
|
243 | yield nullid | |
157 | for i in xrange(self.p.l): |
|
244 | for i in xrange(self.p.l): | |
158 | try: |
|
245 | try: | |
159 | yield self.p.index[i][-1] |
|
246 | yield self.p.index[i][-1] | |
160 | except: |
|
247 | except: | |
161 | self.p.load(i) |
|
248 | self.p.loadindex(i) | |
162 | yield self.p.index[i][-1] |
|
249 | yield self.p.index[i][-1] | |
163 | def __getitem__(self, key): |
|
250 | def __getitem__(self, key): | |
164 | try: |
|
251 | try: | |
165 | return self.p.map[key] |
|
252 | return self.p.map[key] | |
166 | except KeyError: |
|
253 | except KeyError: | |
167 | try: |
|
254 | try: | |
168 | self.load(key) |
|
255 | self.load(key) | |
169 | return self.p.map[key] |
|
256 | return self.p.map[key] | |
170 | except KeyError: |
|
257 | except KeyError: | |
171 | raise KeyError("node " + hex(key)) |
|
258 | raise KeyError("node " + hex(key)) | |
172 | def __setitem__(self, key, val): |
|
259 | def __setitem__(self, key, val): | |
173 | self.p.map[key] = val |
|
260 | self.p.map[key] = val | |
174 | def __delitem__(self, key): |
|
261 | def __delitem__(self, key): | |
175 | del self.p.map[key] |
|
262 | del self.p.map[key] | |
176 |
|
263 | |||
177 | class RevlogError(Exception): pass |
|
264 | class RevlogError(Exception): pass | |
178 |
|
265 | |||
179 | class revlog(object): |
|
266 | class revlog(object): | |
180 | """ |
|
267 | """ | |
181 | the underlying revision storage object |
|
268 | the underlying revision storage object | |
182 |
|
269 | |||
183 | A revlog consists of two parts, an index and the revision data. |
|
270 | A revlog consists of two parts, an index and the revision data. | |
184 |
|
271 | |||
185 | The index is a file with a fixed record size containing |
|
272 | The index is a file with a fixed record size containing | |
186 | information on each revision, includings its nodeid (hash), the |
|
273 | information on each revision, includings its nodeid (hash), the | |
187 | nodeids of its parents, the position and offset of its data within |
|
274 | 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 |
|
275 | 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 |
|
276 | contains a linkrev entry that can serve as a pointer to external | |
190 | data. |
|
277 | data. | |
191 |
|
278 | |||
192 | The revision data itself is a linear collection of data chunks. |
|
279 | The revision data itself is a linear collection of data chunks. | |
193 | Each chunk represents a revision and is usually represented as a |
|
280 | Each chunk represents a revision and is usually represented as a | |
194 | delta against the previous chunk. To bound lookup time, runs of |
|
281 | delta against the previous chunk. To bound lookup time, runs of | |
195 | deltas are limited to about 2 times the length of the original |
|
282 | deltas are limited to about 2 times the length of the original | |
196 | version data. This makes retrieval of a version proportional to |
|
283 | version data. This makes retrieval of a version proportional to | |
197 | its size, or O(1) relative to the number of revisions. |
|
284 | its size, or O(1) relative to the number of revisions. | |
198 |
|
285 | |||
199 | Both pieces of the revlog are written to in an append-only |
|
286 | 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 |
|
287 | 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 |
|
288 | remove data, and can use some simple techniques to avoid the need | |
202 | for locking while reading. |
|
289 | for locking while reading. | |
203 | """ |
|
290 | """ | |
204 | def __init__(self, opener, indexfile, datafile, defversion=0): |
|
291 | def __init__(self, opener, indexfile, datafile, defversion=0): | |
205 | """ |
|
292 | """ | |
206 | create a revlog object |
|
293 | create a revlog object | |
207 |
|
294 | |||
208 | opener is a function that abstracts the file opening operation |
|
295 | opener is a function that abstracts the file opening operation | |
209 | and can be used to implement COW semantics or the like. |
|
296 | and can be used to implement COW semantics or the like. | |
210 | """ |
|
297 | """ | |
211 | self.indexfile = indexfile |
|
298 | self.indexfile = indexfile | |
212 | self.datafile = datafile |
|
299 | self.datafile = datafile | |
213 | self.opener = opener |
|
300 | self.opener = opener | |
214 |
|
301 | |||
215 | self.indexstat = None |
|
302 | self.indexstat = None | |
216 | self.cache = None |
|
303 | self.cache = None | |
217 | self.chunkcache = None |
|
304 | self.chunkcache = None | |
218 | self.defversion = defversion |
|
305 | self.defversion = defversion | |
219 | self.load() |
|
306 | self.load() | |
220 |
|
307 | |||
221 | def load(self): |
|
308 | def load(self): | |
222 | v = self.defversion |
|
309 | v = self.defversion | |
223 | try: |
|
310 | try: | |
224 | f = self.opener(self.indexfile) |
|
311 | f = self.opener(self.indexfile) | |
225 | i = f.read() |
|
312 | i = f.read(4) | |
|
313 | f.seek(0) | |||
226 | except IOError, inst: |
|
314 | except IOError, inst: | |
227 | if inst.errno != errno.ENOENT: |
|
315 | if inst.errno != errno.ENOENT: | |
228 | raise |
|
316 | raise | |
229 | i = "" |
|
317 | i = "" | |
230 | else: |
|
318 | else: | |
231 | try: |
|
319 | try: | |
232 | st = os.fstat(f.fileno()) |
|
320 | st = os.fstat(f.fileno()) | |
233 | except AttributeError, inst: |
|
321 | except AttributeError, inst: | |
234 | st = None |
|
322 | st = None | |
235 | else: |
|
323 | else: | |
236 | oldst = self.indexstat |
|
324 | oldst = self.indexstat | |
237 | if (oldst and st.st_dev == oldst.st_dev |
|
325 | if (oldst and st.st_dev == oldst.st_dev | |
238 | and st.st_ino == oldst.st_ino |
|
326 | and st.st_ino == oldst.st_ino | |
239 | and st.st_mtime == oldst.st_mtime |
|
327 | and st.st_mtime == oldst.st_mtime | |
240 | and st.st_ctime == oldst.st_ctime): |
|
328 | and st.st_ctime == oldst.st_ctime): | |
241 | return |
|
329 | return | |
242 | self.indexstat = st |
|
330 | self.indexstat = st | |
243 | if len(i) > 0: |
|
331 | if len(i) > 0: | |
244 |
v = struct.unpack(versionformat, i |
|
332 | v = struct.unpack(versionformat, i)[0] | |
245 | flags = v & ~0xFFFF |
|
333 | flags = v & ~0xFFFF | |
246 | fmt = v & 0xFFFF |
|
334 | fmt = v & 0xFFFF | |
247 | if fmt == 0: |
|
335 | if fmt == 0: | |
248 | if flags: |
|
336 | if flags: | |
249 | raise RevlogError(_("index %s invalid flags %x for format v0" % |
|
337 | raise RevlogError(_("index %s invalid flags %x for format v0" % | |
250 | (self.indexfile, flags))) |
|
338 | (self.indexfile, flags))) | |
251 | elif fmt == REVLOGNG: |
|
339 | elif fmt == REVLOGNG: | |
252 | if flags & ~REVLOGNGINLINEDATA: |
|
340 | if flags & ~REVLOGNGINLINEDATA: | |
253 | raise RevlogError(_("index %s invalid flags %x for revlogng" % |
|
341 | raise RevlogError(_("index %s invalid flags %x for revlogng" % | |
254 | (self.indexfile, flags))) |
|
342 | (self.indexfile, flags))) | |
255 | else: |
|
343 | else: | |
256 | raise RevlogError(_("index %s invalid format %d" % |
|
344 | raise RevlogError(_("index %s invalid format %d" % | |
257 | (self.indexfile, fmt))) |
|
345 | (self.indexfile, fmt))) | |
258 | self.version = v |
|
346 | self.version = v | |
259 | if v == 0: |
|
347 | if v == 0: | |
260 | self.indexformat = indexformatv0 |
|
348 | self.indexformat = indexformatv0 | |
|
349 | shaoffset = v0shaoffset | |||
261 | else: |
|
350 | else: | |
262 | self.indexformat = indexformatng |
|
351 | self.indexformat = indexformatng | |
|
352 | shaoffset = ngshaoffset | |||
263 |
|
353 | |||
264 | if i: |
|
354 | if i: | |
265 | if not self.inlinedata() and st and st.st_size > 10000: |
|
355 | if not self.inlinedata() and st and st.st_size > 10000: | |
266 | # big index, let's parse it on demand |
|
356 | # big index, let's parse it on demand | |
267 |
parser = lazyparser( |
|
357 | parser = lazyparser(f, st.st_size, self.indexformat, shaoffset) | |
268 | self.index = lazyindex(parser) |
|
358 | self.index = lazyindex(parser) | |
269 | self.nodemap = lazymap(parser) |
|
359 | self.nodemap = lazymap(parser) | |
270 | else: |
|
360 | else: | |
|
361 | i = f.read() | |||
271 | self.parseindex(i) |
|
362 | self.parseindex(i) | |
272 | if self.inlinedata(): |
|
363 | if self.inlinedata(): | |
273 | # we've already got the entire data file read in, save it |
|
364 | # we've already got the entire data file read in, save it | |
274 | # in the chunk data |
|
365 | # in the chunk data | |
275 | self.chunkcache = (0, i) |
|
366 | self.chunkcache = (0, i) | |
276 | if self.version != 0: |
|
367 | if self.version != 0: | |
277 | e = list(self.index[0]) |
|
368 | e = list(self.index[0]) | |
278 | type = self.ngtype(e[0]) |
|
369 | type = self.ngtype(e[0]) | |
279 | e[0] = self.offset_type(0, type) |
|
370 | e[0] = self.offset_type(0, type) | |
280 | self.index[0] = e |
|
371 | self.index[0] = e | |
281 | else: |
|
372 | else: | |
282 | self.nodemap = { nullid: -1} |
|
373 | self.nodemap = { nullid: -1} | |
283 | self.index = [] |
|
374 | self.index = [] | |
284 |
|
375 | |||
285 |
|
376 | |||
286 | def parseindex(self, data): |
|
377 | def parseindex(self, data): | |
287 | s = struct.calcsize(self.indexformat) |
|
378 | s = struct.calcsize(self.indexformat) | |
288 | l = len(data) |
|
379 | l = len(data) | |
289 | self.index = [] |
|
380 | self.index = [] | |
290 | self.nodemap = {nullid: -1} |
|
381 | self.nodemap = {nullid: -1} | |
291 | inline = self.inlinedata() |
|
382 | inline = self.inlinedata() | |
292 | off = 0 |
|
383 | off = 0 | |
293 | n = 0 |
|
384 | n = 0 | |
294 | while off < l: |
|
385 | while off < l: | |
295 | e = struct.unpack(self.indexformat, data[off:off + s]) |
|
386 | e = struct.unpack(self.indexformat, data[off:off + s]) | |
296 | self.index.append(e) |
|
387 | self.index.append(e) | |
297 | self.nodemap[e[-1]] = n |
|
388 | self.nodemap[e[-1]] = n | |
298 | n += 1 |
|
389 | n += 1 | |
299 | off += s |
|
390 | off += s | |
300 | if inline: |
|
391 | if inline: | |
301 | off += e[1] |
|
392 | off += e[1] | |
302 |
|
393 | |||
303 | def ngoffset(self, q): |
|
394 | def ngoffset(self, q): | |
304 | if q & 0xFFFF: |
|
395 | if q & 0xFFFF: | |
305 | raise RevlogError(_('%s: incompatible revision flag %x') % |
|
396 | raise RevlogError(_('%s: incompatible revision flag %x') % | |
306 | (self.indexfile, type)) |
|
397 | (self.indexfile, type)) | |
307 | return long(q >> 16) |
|
398 | return long(q >> 16) | |
308 |
|
399 | |||
309 | def ngtype(self, q): |
|
400 | def ngtype(self, q): | |
310 | return int(q & 0xFFFF) |
|
401 | return int(q & 0xFFFF) | |
311 |
|
402 | |||
312 | def offset_type(self, offset, type): |
|
403 | def offset_type(self, offset, type): | |
313 | return long(long(offset) << 16 | type) |
|
404 | return long(long(offset) << 16 | type) | |
314 |
|
405 | |||
|
406 | def loadindex(self, start, end): | |||
|
407 | """load a block of indexes all at once from the lazy parser""" | |||
|
408 | if isinstance(self.index, lazyindex): | |||
|
409 | self.index.p.loadindex(start, end) | |||
|
410 | ||||
315 | def loadindexmap(self): |
|
411 | def loadindexmap(self): | |
316 | """loads both the map and the index from the lazy parser""" |
|
412 | """loads both the map and the index from the lazy parser""" | |
317 | if isinstance(self.index, lazyindex): |
|
413 | if isinstance(self.index, lazyindex): | |
318 | p = self.index.p |
|
414 | p = self.index.p | |
319 | p.load() |
|
415 | p.loadindex() | |
|
416 | self.nodemap = p.map | |||
|
417 | ||||
|
418 | def loadmap(self): | |||
|
419 | """loads the map from the lazy parser""" | |||
|
420 | if isinstance(self.nodemap, lazymap): | |||
|
421 | self.nodemap.p.loadmap() | |||
|
422 | self.nodemap = self.nodemap.p.map | |||
320 |
|
423 | |||
321 | def inlinedata(self): return self.version & REVLOGNGINLINEDATA |
|
424 | def inlinedata(self): return self.version & REVLOGNGINLINEDATA | |
322 | def tip(self): return self.node(len(self.index) - 1) |
|
425 | def tip(self): return self.node(len(self.index) - 1) | |
323 | def count(self): return len(self.index) |
|
426 | def count(self): return len(self.index) | |
324 | def node(self, rev): |
|
427 | def node(self, rev): | |
325 | return (rev < 0) and nullid or self.index[rev][-1] |
|
428 | return (rev < 0) and nullid or self.index[rev][-1] | |
326 | def rev(self, node): |
|
429 | def rev(self, node): | |
327 | try: |
|
430 | try: | |
328 | return self.nodemap[node] |
|
431 | return self.nodemap[node] | |
329 | except KeyError: |
|
432 | except KeyError: | |
330 | raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) |
|
433 | raise RevlogError(_('%s: no node %s') % (self.indexfile, hex(node))) | |
331 | def linkrev(self, node): return self.index[self.rev(node)][-4] |
|
434 | def linkrev(self, node): return self.index[self.rev(node)][-4] | |
332 | def parents(self, node): |
|
435 | def parents(self, node): | |
333 | if node == nullid: return (nullid, nullid) |
|
436 | if node == nullid: return (nullid, nullid) | |
334 | r = self.rev(node) |
|
437 | r = self.rev(node) | |
335 | d = self.index[r][-3:-1] |
|
438 | d = self.index[r][-3:-1] | |
336 | if self.version == 0: |
|
439 | if self.version == 0: | |
337 | return d |
|
440 | return d | |
338 | return [ self.node(x) for x in d ] |
|
441 | return [ self.node(x) for x in d ] | |
339 | def start(self, rev): |
|
442 | def start(self, rev): | |
340 | if rev < 0: |
|
443 | if rev < 0: | |
341 | return -1 |
|
444 | return -1 | |
342 | if self.version != 0: |
|
445 | if self.version != 0: | |
343 | return self.ngoffset(self.index[rev][0]) |
|
446 | return self.ngoffset(self.index[rev][0]) | |
344 | return self.index[rev][0] |
|
447 | return self.index[rev][0] | |
345 |
|
448 | |||
346 | def end(self, rev): return self.start(rev) + self.length(rev) |
|
449 | def end(self, rev): return self.start(rev) + self.length(rev) | |
347 |
|
450 | |||
348 | def size(self, rev): |
|
451 | def size(self, rev): | |
349 | """return the length of the uncompressed text for a given revision""" |
|
452 | """return the length of the uncompressed text for a given revision""" | |
350 | l = -1 |
|
453 | l = -1 | |
351 | if self.version != 0: |
|
454 | if self.version != 0: | |
352 | l = self.index[rev][2] |
|
455 | l = self.index[rev][2] | |
353 | if l >= 0: |
|
456 | if l >= 0: | |
354 | return l |
|
457 | return l | |
355 |
|
458 | |||
356 | t = self.revision(self.node(rev)) |
|
459 | t = self.revision(self.node(rev)) | |
357 | return len(t) |
|
460 | return len(t) | |
358 |
|
461 | |||
359 | # alternate implementation, The advantage to this code is it |
|
462 | # alternate implementation, The advantage to this code is it | |
360 | # will be faster for a single revision. But, the results are not |
|
463 | # will be faster for a single revision. But, the results are not | |
361 | # cached, so finding the size of every revision will be slower. |
|
464 | # cached, so finding the size of every revision will be slower. | |
362 | """ |
|
465 | """ | |
363 | if self.cache and self.cache[1] == rev: |
|
466 | if self.cache and self.cache[1] == rev: | |
364 | return len(self.cache[2]) |
|
467 | return len(self.cache[2]) | |
365 |
|
468 | |||
366 | base = self.base(rev) |
|
469 | base = self.base(rev) | |
367 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
|
470 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: | |
368 | base = self.cache[1] |
|
471 | base = self.cache[1] | |
369 | text = self.cache[2] |
|
472 | text = self.cache[2] | |
370 | else: |
|
473 | else: | |
371 | text = self.revision(self.node(base)) |
|
474 | text = self.revision(self.node(base)) | |
372 |
|
475 | |||
373 | l = len(text) |
|
476 | l = len(text) | |
374 | for x in xrange(base + 1, rev + 1): |
|
477 | for x in xrange(base + 1, rev + 1): | |
375 | l = mdiff.patchedsize(l, self.chunk(x)) |
|
478 | l = mdiff.patchedsize(l, self.chunk(x)) | |
376 | return l |
|
479 | return l | |
377 | """ |
|
480 | """ | |
378 |
|
481 | |||
379 | def length(self, rev): |
|
482 | def length(self, rev): | |
380 | if rev < 0: |
|
483 | if rev < 0: | |
381 | return 0 |
|
484 | return 0 | |
382 | else: |
|
485 | else: | |
383 | return self.index[rev][1] |
|
486 | return self.index[rev][1] | |
384 | def base(self, rev): return (rev < 0) and rev or self.index[rev][-5] |
|
487 | def base(self, rev): return (rev < 0) and rev or self.index[rev][-5] | |
385 |
|
488 | |||
386 | def reachable(self, rev, stop=None): |
|
489 | def reachable(self, rev, stop=None): | |
387 | reachable = {} |
|
490 | reachable = {} | |
388 | visit = [rev] |
|
491 | visit = [rev] | |
389 | reachable[rev] = 1 |
|
492 | reachable[rev] = 1 | |
390 | if stop: |
|
493 | if stop: | |
391 | stopn = self.rev(stop) |
|
494 | stopn = self.rev(stop) | |
392 | else: |
|
495 | else: | |
393 | stopn = 0 |
|
496 | stopn = 0 | |
394 | while visit: |
|
497 | while visit: | |
395 | n = visit.pop(0) |
|
498 | n = visit.pop(0) | |
396 | if n == stop: |
|
499 | if n == stop: | |
397 | continue |
|
500 | continue | |
398 | if n == nullid: |
|
501 | if n == nullid: | |
399 | continue |
|
502 | continue | |
400 | for p in self.parents(n): |
|
503 | for p in self.parents(n): | |
401 | if self.rev(p) < stopn: |
|
504 | if self.rev(p) < stopn: | |
402 | continue |
|
505 | continue | |
403 | if p not in reachable: |
|
506 | if p not in reachable: | |
404 | reachable[p] = 1 |
|
507 | reachable[p] = 1 | |
405 | visit.append(p) |
|
508 | visit.append(p) | |
406 | return reachable |
|
509 | return reachable | |
407 |
|
510 | |||
408 | def nodesbetween(self, roots=None, heads=None): |
|
511 | def nodesbetween(self, roots=None, heads=None): | |
409 | """Return a tuple containing three elements. Elements 1 and 2 contain |
|
512 | """Return a tuple containing three elements. Elements 1 and 2 contain | |
410 | a final list bases and heads after all the unreachable ones have been |
|
513 | a final list bases and heads after all the unreachable ones have been | |
411 | pruned. Element 0 contains a topologically sorted list of all |
|
514 | pruned. Element 0 contains a topologically sorted list of all | |
412 |
|
515 | |||
413 | nodes that satisfy these constraints: |
|
516 | nodes that satisfy these constraints: | |
414 | 1. All nodes must be descended from a node in roots (the nodes on |
|
517 | 1. All nodes must be descended from a node in roots (the nodes on | |
415 | roots are considered descended from themselves). |
|
518 | roots are considered descended from themselves). | |
416 | 2. All nodes must also be ancestors of a node in heads (the nodes in |
|
519 | 2. All nodes must also be ancestors of a node in heads (the nodes in | |
417 | heads are considered to be their own ancestors). |
|
520 | heads are considered to be their own ancestors). | |
418 |
|
521 | |||
419 | If roots is unspecified, nullid is assumed as the only root. |
|
522 | If roots is unspecified, nullid is assumed as the only root. | |
420 | If heads is unspecified, it is taken to be the output of the |
|
523 | If heads is unspecified, it is taken to be the output of the | |
421 | heads method (i.e. a list of all nodes in the repository that |
|
524 | heads method (i.e. a list of all nodes in the repository that | |
422 | have no children).""" |
|
525 | have no children).""" | |
423 | nonodes = ([], [], []) |
|
526 | nonodes = ([], [], []) | |
424 | if roots is not None: |
|
527 | if roots is not None: | |
425 | roots = list(roots) |
|
528 | roots = list(roots) | |
426 | if not roots: |
|
529 | if not roots: | |
427 | return nonodes |
|
530 | return nonodes | |
428 | lowestrev = min([self.rev(n) for n in roots]) |
|
531 | lowestrev = min([self.rev(n) for n in roots]) | |
429 | else: |
|
532 | else: | |
430 | roots = [nullid] # Everybody's a descendent of nullid |
|
533 | roots = [nullid] # Everybody's a descendent of nullid | |
431 | lowestrev = -1 |
|
534 | lowestrev = -1 | |
432 | if (lowestrev == -1) and (heads is None): |
|
535 | if (lowestrev == -1) and (heads is None): | |
433 | # We want _all_ the nodes! |
|
536 | # We want _all_ the nodes! | |
434 | return ([self.node(r) for r in xrange(0, self.count())], |
|
537 | return ([self.node(r) for r in xrange(0, self.count())], | |
435 | [nullid], list(self.heads())) |
|
538 | [nullid], list(self.heads())) | |
436 | if heads is None: |
|
539 | if heads is None: | |
437 | # All nodes are ancestors, so the latest ancestor is the last |
|
540 | # All nodes are ancestors, so the latest ancestor is the last | |
438 | # node. |
|
541 | # node. | |
439 | highestrev = self.count() - 1 |
|
542 | highestrev = self.count() - 1 | |
440 | # Set ancestors to None to signal that every node is an ancestor. |
|
543 | # Set ancestors to None to signal that every node is an ancestor. | |
441 | ancestors = None |
|
544 | ancestors = None | |
442 | # Set heads to an empty dictionary for later discovery of heads |
|
545 | # Set heads to an empty dictionary for later discovery of heads | |
443 | heads = {} |
|
546 | heads = {} | |
444 | else: |
|
547 | else: | |
445 | heads = list(heads) |
|
548 | heads = list(heads) | |
446 | if not heads: |
|
549 | if not heads: | |
447 | return nonodes |
|
550 | return nonodes | |
448 | ancestors = {} |
|
551 | ancestors = {} | |
449 | # Start at the top and keep marking parents until we're done. |
|
552 | # Start at the top and keep marking parents until we're done. | |
450 | nodestotag = heads[:] |
|
553 | nodestotag = heads[:] | |
451 | # Turn heads into a dictionary so we can remove 'fake' heads. |
|
554 | # Turn heads into a dictionary so we can remove 'fake' heads. | |
452 | # Also, later we will be using it to filter out the heads we can't |
|
555 | # Also, later we will be using it to filter out the heads we can't | |
453 | # find from roots. |
|
556 | # find from roots. | |
454 | heads = dict.fromkeys(heads, 0) |
|
557 | heads = dict.fromkeys(heads, 0) | |
455 | # Remember where the top was so we can use it as a limit later. |
|
558 | # Remember where the top was so we can use it as a limit later. | |
456 | highestrev = max([self.rev(n) for n in nodestotag]) |
|
559 | highestrev = max([self.rev(n) for n in nodestotag]) | |
457 | while nodestotag: |
|
560 | while nodestotag: | |
458 | # grab a node to tag |
|
561 | # grab a node to tag | |
459 | n = nodestotag.pop() |
|
562 | n = nodestotag.pop() | |
460 | # Never tag nullid |
|
563 | # Never tag nullid | |
461 | if n == nullid: |
|
564 | if n == nullid: | |
462 | continue |
|
565 | continue | |
463 | # A node's revision number represents its place in a |
|
566 | # A node's revision number represents its place in a | |
464 | # topologically sorted list of nodes. |
|
567 | # topologically sorted list of nodes. | |
465 | r = self.rev(n) |
|
568 | r = self.rev(n) | |
466 | if r >= lowestrev: |
|
569 | if r >= lowestrev: | |
467 | if n not in ancestors: |
|
570 | if n not in ancestors: | |
468 | # If we are possibly a descendent of one of the roots |
|
571 | # If we are possibly a descendent of one of the roots | |
469 | # and we haven't already been marked as an ancestor |
|
572 | # and we haven't already been marked as an ancestor | |
470 | ancestors[n] = 1 # Mark as ancestor |
|
573 | ancestors[n] = 1 # Mark as ancestor | |
471 | # Add non-nullid parents to list of nodes to tag. |
|
574 | # Add non-nullid parents to list of nodes to tag. | |
472 | nodestotag.extend([p for p in self.parents(n) if |
|
575 | nodestotag.extend([p for p in self.parents(n) if | |
473 | p != nullid]) |
|
576 | p != nullid]) | |
474 | elif n in heads: # We've seen it before, is it a fake head? |
|
577 | elif n in heads: # We've seen it before, is it a fake head? | |
475 | # So it is, real heads should not be the ancestors of |
|
578 | # So it is, real heads should not be the ancestors of | |
476 | # any other heads. |
|
579 | # any other heads. | |
477 | heads.pop(n) |
|
580 | heads.pop(n) | |
478 | if not ancestors: |
|
581 | if not ancestors: | |
479 | return nonodes |
|
582 | return nonodes | |
480 | # Now that we have our set of ancestors, we want to remove any |
|
583 | # Now that we have our set of ancestors, we want to remove any | |
481 | # roots that are not ancestors. |
|
584 | # roots that are not ancestors. | |
482 |
|
585 | |||
483 | # If one of the roots was nullid, everything is included anyway. |
|
586 | # If one of the roots was nullid, everything is included anyway. | |
484 | if lowestrev > -1: |
|
587 | if lowestrev > -1: | |
485 | # But, since we weren't, let's recompute the lowest rev to not |
|
588 | # But, since we weren't, let's recompute the lowest rev to not | |
486 | # include roots that aren't ancestors. |
|
589 | # include roots that aren't ancestors. | |
487 |
|
590 | |||
488 | # Filter out roots that aren't ancestors of heads |
|
591 | # Filter out roots that aren't ancestors of heads | |
489 | roots = [n for n in roots if n in ancestors] |
|
592 | roots = [n for n in roots if n in ancestors] | |
490 | # Recompute the lowest revision |
|
593 | # Recompute the lowest revision | |
491 | if roots: |
|
594 | if roots: | |
492 | lowestrev = min([self.rev(n) for n in roots]) |
|
595 | lowestrev = min([self.rev(n) for n in roots]) | |
493 | else: |
|
596 | else: | |
494 | # No more roots? Return empty list |
|
597 | # No more roots? Return empty list | |
495 | return nonodes |
|
598 | return nonodes | |
496 | else: |
|
599 | else: | |
497 | # We are descending from nullid, and don't need to care about |
|
600 | # We are descending from nullid, and don't need to care about | |
498 | # any other roots. |
|
601 | # any other roots. | |
499 | lowestrev = -1 |
|
602 | lowestrev = -1 | |
500 | roots = [nullid] |
|
603 | roots = [nullid] | |
501 | # Transform our roots list into a 'set' (i.e. a dictionary where the |
|
604 | # Transform our roots list into a 'set' (i.e. a dictionary where the | |
502 | # values don't matter. |
|
605 | # values don't matter. | |
503 | descendents = dict.fromkeys(roots, 1) |
|
606 | descendents = dict.fromkeys(roots, 1) | |
504 | # Also, keep the original roots so we can filter out roots that aren't |
|
607 | # Also, keep the original roots so we can filter out roots that aren't | |
505 | # 'real' roots (i.e. are descended from other roots). |
|
608 | # 'real' roots (i.e. are descended from other roots). | |
506 | roots = descendents.copy() |
|
609 | roots = descendents.copy() | |
507 | # Our topologically sorted list of output nodes. |
|
610 | # Our topologically sorted list of output nodes. | |
508 | orderedout = [] |
|
611 | orderedout = [] | |
509 | # Don't start at nullid since we don't want nullid in our output list, |
|
612 | # Don't start at nullid since we don't want nullid in our output list, | |
510 | # and if nullid shows up in descedents, empty parents will look like |
|
613 | # and if nullid shows up in descedents, empty parents will look like | |
511 | # they're descendents. |
|
614 | # they're descendents. | |
512 | for r in xrange(max(lowestrev, 0), highestrev + 1): |
|
615 | for r in xrange(max(lowestrev, 0), highestrev + 1): | |
513 | n = self.node(r) |
|
616 | n = self.node(r) | |
514 | isdescendent = False |
|
617 | isdescendent = False | |
515 | if lowestrev == -1: # Everybody is a descendent of nullid |
|
618 | if lowestrev == -1: # Everybody is a descendent of nullid | |
516 | isdescendent = True |
|
619 | isdescendent = True | |
517 | elif n in descendents: |
|
620 | elif n in descendents: | |
518 | # n is already a descendent |
|
621 | # n is already a descendent | |
519 | isdescendent = True |
|
622 | isdescendent = True | |
520 | # This check only needs to be done here because all the roots |
|
623 | # This check only needs to be done here because all the roots | |
521 | # will start being marked is descendents before the loop. |
|
624 | # will start being marked is descendents before the loop. | |
522 | if n in roots: |
|
625 | if n in roots: | |
523 | # If n was a root, check if it's a 'real' root. |
|
626 | # If n was a root, check if it's a 'real' root. | |
524 | p = tuple(self.parents(n)) |
|
627 | p = tuple(self.parents(n)) | |
525 | # If any of its parents are descendents, it's not a root. |
|
628 | # If any of its parents are descendents, it's not a root. | |
526 | if (p[0] in descendents) or (p[1] in descendents): |
|
629 | if (p[0] in descendents) or (p[1] in descendents): | |
527 | roots.pop(n) |
|
630 | roots.pop(n) | |
528 | else: |
|
631 | else: | |
529 | p = tuple(self.parents(n)) |
|
632 | p = tuple(self.parents(n)) | |
530 | # A node is a descendent if either of its parents are |
|
633 | # A node is a descendent if either of its parents are | |
531 | # descendents. (We seeded the dependents list with the roots |
|
634 | # descendents. (We seeded the dependents list with the roots | |
532 | # up there, remember?) |
|
635 | # up there, remember?) | |
533 | if (p[0] in descendents) or (p[1] in descendents): |
|
636 | if (p[0] in descendents) or (p[1] in descendents): | |
534 | descendents[n] = 1 |
|
637 | descendents[n] = 1 | |
535 | isdescendent = True |
|
638 | isdescendent = True | |
536 | if isdescendent and ((ancestors is None) or (n in ancestors)): |
|
639 | if isdescendent and ((ancestors is None) or (n in ancestors)): | |
537 | # Only include nodes that are both descendents and ancestors. |
|
640 | # Only include nodes that are both descendents and ancestors. | |
538 | orderedout.append(n) |
|
641 | orderedout.append(n) | |
539 | if (ancestors is not None) and (n in heads): |
|
642 | if (ancestors is not None) and (n in heads): | |
540 | # We're trying to figure out which heads are reachable |
|
643 | # We're trying to figure out which heads are reachable | |
541 | # from roots. |
|
644 | # from roots. | |
542 | # Mark this head as having been reached |
|
645 | # Mark this head as having been reached | |
543 | heads[n] = 1 |
|
646 | heads[n] = 1 | |
544 | elif ancestors is None: |
|
647 | elif ancestors is None: | |
545 | # Otherwise, we're trying to discover the heads. |
|
648 | # Otherwise, we're trying to discover the heads. | |
546 | # Assume this is a head because if it isn't, the next step |
|
649 | # Assume this is a head because if it isn't, the next step | |
547 | # will eventually remove it. |
|
650 | # will eventually remove it. | |
548 | heads[n] = 1 |
|
651 | heads[n] = 1 | |
549 | # But, obviously its parents aren't. |
|
652 | # But, obviously its parents aren't. | |
550 | for p in self.parents(n): |
|
653 | for p in self.parents(n): | |
551 | heads.pop(p, None) |
|
654 | heads.pop(p, None) | |
552 | heads = [n for n in heads.iterkeys() if heads[n] != 0] |
|
655 | heads = [n for n in heads.iterkeys() if heads[n] != 0] | |
553 | roots = roots.keys() |
|
656 | roots = roots.keys() | |
554 | assert orderedout |
|
657 | assert orderedout | |
555 | assert roots |
|
658 | assert roots | |
556 | assert heads |
|
659 | assert heads | |
557 | return (orderedout, roots, heads) |
|
660 | return (orderedout, roots, heads) | |
558 |
|
661 | |||
559 | def heads(self, start=None): |
|
662 | def heads(self, start=None): | |
560 | """return the list of all nodes that have no children |
|
663 | """return the list of all nodes that have no children | |
561 |
|
664 | |||
562 | if start is specified, only heads that are descendants of |
|
665 | if start is specified, only heads that are descendants of | |
563 | start will be returned |
|
666 | start will be returned | |
564 |
|
667 | |||
565 | """ |
|
668 | """ | |
566 | if start is None: |
|
669 | if start is None: | |
567 | start = nullid |
|
670 | start = nullid | |
568 | reachable = {start: 1} |
|
671 | reachable = {start: 1} | |
569 | heads = {start: 1} |
|
672 | heads = {start: 1} | |
570 | startrev = self.rev(start) |
|
673 | startrev = self.rev(start) | |
571 |
|
674 | |||
572 | for r in xrange(startrev + 1, self.count()): |
|
675 | for r in xrange(startrev + 1, self.count()): | |
573 | n = self.node(r) |
|
676 | n = self.node(r) | |
574 | for pn in self.parents(n): |
|
677 | for pn in self.parents(n): | |
575 | if pn in reachable: |
|
678 | if pn in reachable: | |
576 | reachable[n] = 1 |
|
679 | reachable[n] = 1 | |
577 | heads[n] = 1 |
|
680 | heads[n] = 1 | |
578 | if pn in heads: |
|
681 | if pn in heads: | |
579 | del heads[pn] |
|
682 | del heads[pn] | |
580 | return heads.keys() |
|
683 | return heads.keys() | |
581 |
|
684 | |||
582 | def children(self, node): |
|
685 | def children(self, node): | |
583 | """find the children of a given node""" |
|
686 | """find the children of a given node""" | |
584 | c = [] |
|
687 | c = [] | |
585 | p = self.rev(node) |
|
688 | p = self.rev(node) | |
586 | for r in range(p + 1, self.count()): |
|
689 | for r in range(p + 1, self.count()): | |
587 | n = self.node(r) |
|
690 | n = self.node(r) | |
588 | for pn in self.parents(n): |
|
691 | for pn in self.parents(n): | |
589 | if pn == node: |
|
692 | if pn == node: | |
590 | c.append(n) |
|
693 | c.append(n) | |
591 | continue |
|
694 | continue | |
592 | elif pn == nullid: |
|
695 | elif pn == nullid: | |
593 | continue |
|
696 | continue | |
594 | return c |
|
697 | return c | |
595 |
|
698 | |||
596 | def lookup(self, id): |
|
699 | def lookup(self, id): | |
597 | """locate a node based on revision number or subset of hex nodeid""" |
|
700 | """locate a node based on revision number or subset of hex nodeid""" | |
598 | try: |
|
701 | try: | |
599 | rev = int(id) |
|
702 | rev = int(id) | |
600 | if str(rev) != id: raise ValueError |
|
703 | if str(rev) != id: raise ValueError | |
601 | if rev < 0: rev = self.count() + rev |
|
704 | if rev < 0: rev = self.count() + rev | |
602 | if rev < 0 or rev >= self.count(): raise ValueError |
|
705 | if rev < 0 or rev >= self.count(): raise ValueError | |
603 | return self.node(rev) |
|
706 | return self.node(rev) | |
604 | except (ValueError, OverflowError): |
|
707 | except (ValueError, OverflowError): | |
605 | c = [] |
|
708 | c = [] | |
606 | for n in self.nodemap: |
|
709 | for n in self.nodemap: | |
607 | if hex(n).startswith(id): |
|
710 | if hex(n).startswith(id): | |
608 | c.append(n) |
|
711 | c.append(n) | |
609 | if len(c) > 1: raise RevlogError(_("Ambiguous identifier")) |
|
712 | if len(c) > 1: raise RevlogError(_("Ambiguous identifier")) | |
610 | if len(c) < 1: raise RevlogError(_("No match found")) |
|
713 | if len(c) < 1: raise RevlogError(_("No match found")) | |
611 | return c[0] |
|
714 | return c[0] | |
612 |
|
715 | |||
613 | return None |
|
716 | return None | |
614 |
|
717 | |||
615 | def diff(self, a, b): |
|
718 | def diff(self, a, b): | |
616 | """return a delta between two revisions""" |
|
719 | """return a delta between two revisions""" | |
617 | return mdiff.textdiff(a, b) |
|
720 | return mdiff.textdiff(a, b) | |
618 |
|
721 | |||
619 | def patches(self, t, pl): |
|
722 | def patches(self, t, pl): | |
620 | """apply a list of patches to a string""" |
|
723 | """apply a list of patches to a string""" | |
621 | return mdiff.patches(t, pl) |
|
724 | return mdiff.patches(t, pl) | |
622 |
|
725 | |||
623 | def chunk(self, rev, df=None, cachelen=4096): |
|
726 | def chunk(self, rev, df=None, cachelen=4096): | |
624 | start, length = self.start(rev), self.length(rev) |
|
727 | start, length = self.start(rev), self.length(rev) | |
625 | inline = self.inlinedata() |
|
728 | inline = self.inlinedata() | |
626 | if inline: |
|
729 | if inline: | |
627 | start += (rev + 1) * struct.calcsize(self.indexformat) |
|
730 | start += (rev + 1) * struct.calcsize(self.indexformat) | |
628 | end = start + length |
|
731 | end = start + length | |
629 | def loadcache(df): |
|
732 | def loadcache(df): | |
630 | cache_length = max(cachelen, length) # 4k |
|
733 | cache_length = max(cachelen, length) # 4k | |
631 | if not df: |
|
734 | if not df: | |
632 | if inline: |
|
735 | if inline: | |
633 | df = self.opener(self.indexfile) |
|
736 | df = self.opener(self.indexfile) | |
634 | else: |
|
737 | else: | |
635 | df = self.opener(self.datafile) |
|
738 | df = self.opener(self.datafile) | |
636 | df.seek(start) |
|
739 | df.seek(start) | |
637 | self.chunkcache = (start, df.read(cache_length)) |
|
740 | self.chunkcache = (start, df.read(cache_length)) | |
638 |
|
741 | |||
639 | if not self.chunkcache: |
|
742 | if not self.chunkcache: | |
640 | loadcache(df) |
|
743 | loadcache(df) | |
641 |
|
744 | |||
642 | cache_start = self.chunkcache[0] |
|
745 | cache_start = self.chunkcache[0] | |
643 | cache_end = cache_start + len(self.chunkcache[1]) |
|
746 | cache_end = cache_start + len(self.chunkcache[1]) | |
644 | if start >= cache_start and end <= cache_end: |
|
747 | if start >= cache_start and end <= cache_end: | |
645 | # it is cached |
|
748 | # it is cached | |
646 | offset = start - cache_start |
|
749 | offset = start - cache_start | |
647 | else: |
|
750 | else: | |
648 | loadcache(df) |
|
751 | loadcache(df) | |
649 | offset = 0 |
|
752 | offset = 0 | |
650 |
|
753 | |||
651 | #def checkchunk(): |
|
754 | #def checkchunk(): | |
652 | # df = self.opener(self.datafile) |
|
755 | # df = self.opener(self.datafile) | |
653 | # df.seek(start) |
|
756 | # df.seek(start) | |
654 | # return df.read(length) |
|
757 | # return df.read(length) | |
655 | #assert s == checkchunk() |
|
758 | #assert s == checkchunk() | |
656 | return decompress(self.chunkcache[1][offset:offset + length]) |
|
759 | return decompress(self.chunkcache[1][offset:offset + length]) | |
657 |
|
760 | |||
658 | def delta(self, node): |
|
761 | def delta(self, node): | |
659 | """return or calculate a delta between a node and its predecessor""" |
|
762 | """return or calculate a delta between a node and its predecessor""" | |
660 | r = self.rev(node) |
|
763 | r = self.rev(node) | |
661 | return self.revdiff(r - 1, r) |
|
764 | return self.revdiff(r - 1, r) | |
662 |
|
765 | |||
663 | def revdiff(self, rev1, rev2): |
|
766 | def revdiff(self, rev1, rev2): | |
664 | """return or calculate a delta between two revisions""" |
|
767 | """return or calculate a delta between two revisions""" | |
665 | b1 = self.base(rev1) |
|
768 | b1 = self.base(rev1) | |
666 | b2 = self.base(rev2) |
|
769 | b2 = self.base(rev2) | |
667 | if b1 == b2 and rev1 + 1 == rev2: |
|
770 | if b1 == b2 and rev1 + 1 == rev2: | |
668 | return self.chunk(rev2) |
|
771 | return self.chunk(rev2) | |
669 | else: |
|
772 | else: | |
670 | return self.diff(self.revision(self.node(rev1)), |
|
773 | return self.diff(self.revision(self.node(rev1)), | |
671 | self.revision(self.node(rev2))) |
|
774 | self.revision(self.node(rev2))) | |
672 |
|
775 | |||
673 | def revision(self, node): |
|
776 | def revision(self, node): | |
674 | """return an uncompressed revision of a given""" |
|
777 | """return an uncompressed revision of a given""" | |
675 | if node == nullid: return "" |
|
778 | if node == nullid: return "" | |
676 | if self.cache and self.cache[0] == node: return self.cache[2] |
|
779 | if self.cache and self.cache[0] == node: return self.cache[2] | |
677 |
|
780 | |||
678 | # look up what we need to read |
|
781 | # look up what we need to read | |
679 | text = None |
|
782 | text = None | |
680 | rev = self.rev(node) |
|
783 | rev = self.rev(node) | |
681 | base = self.base(rev) |
|
784 | base = self.base(rev) | |
682 |
|
785 | |||
683 | if self.inlinedata(): |
|
786 | if self.inlinedata(): | |
684 | # we probably have the whole chunk cached |
|
787 | # we probably have the whole chunk cached | |
685 | df = None |
|
788 | df = None | |
686 | else: |
|
789 | else: | |
687 | df = self.opener(self.datafile) |
|
790 | df = self.opener(self.datafile) | |
688 |
|
791 | |||
689 | # do we have useful data cached? |
|
792 | # do we have useful data cached? | |
690 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
|
793 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: | |
691 | base = self.cache[1] |
|
794 | base = self.cache[1] | |
692 | text = self.cache[2] |
|
795 | text = self.cache[2] | |
|
796 | self.loadindex(base, rev + 1) | |||
693 | else: |
|
797 | else: | |
|
798 | self.loadindex(base, rev + 1) | |||
694 | text = self.chunk(base, df=df) |
|
799 | text = self.chunk(base, df=df) | |
695 |
|
800 | |||
696 | bins = [] |
|
801 | bins = [] | |
697 | for r in xrange(base + 1, rev + 1): |
|
802 | for r in xrange(base + 1, rev + 1): | |
698 | bins.append(self.chunk(r, df=df)) |
|
803 | bins.append(self.chunk(r, df=df)) | |
699 |
|
804 | |||
700 | text = self.patches(text, bins) |
|
805 | text = self.patches(text, bins) | |
701 |
|
806 | |||
702 | p1, p2 = self.parents(node) |
|
807 | p1, p2 = self.parents(node) | |
703 | if node != hash(text, p1, p2): |
|
808 | if node != hash(text, p1, p2): | |
704 | raise RevlogError(_("integrity check failed on %s:%d") |
|
809 | raise RevlogError(_("integrity check failed on %s:%d") | |
705 | % (self.datafile, rev)) |
|
810 | % (self.datafile, rev)) | |
706 |
|
811 | |||
707 | self.cache = (node, rev, text) |
|
812 | self.cache = (node, rev, text) | |
708 | return text |
|
813 | return text | |
709 |
|
814 | |||
710 | def checkinlinesize(self, tr, fp=None): |
|
815 | def checkinlinesize(self, tr, fp=None): | |
711 | if not self.inlinedata(): |
|
816 | if not self.inlinedata(): | |
712 | return |
|
817 | return | |
713 | if not fp: |
|
818 | if not fp: | |
714 | fp = self.opener(self.indexfile, 'r') |
|
819 | fp = self.opener(self.indexfile, 'r') | |
715 | size = fp.tell() |
|
820 | size = fp.tell() | |
716 | if size < 131072: |
|
821 | if size < 131072: | |
717 | return |
|
822 | return | |
718 | tr.add(self.datafile, 0) |
|
823 | tr.add(self.datafile, 0) | |
719 | df = self.opener(self.datafile, 'w') |
|
824 | df = self.opener(self.datafile, 'w') | |
720 | calc = struct.calcsize(self.indexformat) |
|
825 | calc = struct.calcsize(self.indexformat) | |
721 | for r in xrange(self.count()): |
|
826 | for r in xrange(self.count()): | |
722 | start = self.start(r) + (r + 1) * calc |
|
827 | start = self.start(r) + (r + 1) * calc | |
723 | length = self.length(r) |
|
828 | length = self.length(r) | |
724 | fp.seek(start) |
|
829 | fp.seek(start) | |
725 | d = fp.read(length) |
|
830 | d = fp.read(length) | |
726 | df.write(d) |
|
831 | df.write(d) | |
727 | fp.close() |
|
832 | fp.close() | |
728 | df.close() |
|
833 | df.close() | |
729 | fp = self.opener(self.indexfile, 'w', atomictemp=True) |
|
834 | fp = self.opener(self.indexfile, 'w', atomictemp=True) | |
730 | self.version &= ~(REVLOGNGINLINEDATA) |
|
835 | self.version &= ~(REVLOGNGINLINEDATA) | |
731 | if self.count(): |
|
836 | if self.count(): | |
732 | x = self.index[0] |
|
837 | x = self.index[0] | |
733 | e = struct.pack(self.indexformat, *x)[4:] |
|
838 | e = struct.pack(self.indexformat, *x)[4:] | |
734 | l = struct.pack(versionformat, self.version) |
|
839 | l = struct.pack(versionformat, self.version) | |
735 | fp.write(l) |
|
840 | fp.write(l) | |
736 | fp.write(e) |
|
841 | fp.write(e) | |
737 |
|
842 | |||
738 | for i in xrange(1, self.count()): |
|
843 | for i in xrange(1, self.count()): | |
739 | x = self.index[i] |
|
844 | x = self.index[i] | |
740 | e = struct.pack(self.indexformat, *x) |
|
845 | e = struct.pack(self.indexformat, *x) | |
741 | fp.write(e) |
|
846 | fp.write(e) | |
742 |
|
847 | |||
743 | # if we don't call rename, the temp file will never replace the |
|
848 | # if we don't call rename, the temp file will never replace the | |
744 | # real index |
|
849 | # real index | |
745 | fp.rename() |
|
850 | fp.rename() | |
746 | self.chunkcache = None |
|
851 | self.chunkcache = None | |
747 |
|
852 | |||
748 | def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
|
853 | def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): | |
749 | """add a revision to the log |
|
854 | """add a revision to the log | |
750 |
|
855 | |||
751 | text - the revision data to add |
|
856 | text - the revision data to add | |
752 | transaction - the transaction object used for rollback |
|
857 | transaction - the transaction object used for rollback | |
753 | link - the linkrev data to add |
|
858 | link - the linkrev data to add | |
754 | p1, p2 - the parent nodeids of the revision |
|
859 | p1, p2 - the parent nodeids of the revision | |
755 | d - an optional precomputed delta |
|
860 | d - an optional precomputed delta | |
756 | """ |
|
861 | """ | |
757 | if text is None: text = "" |
|
862 | if text is None: text = "" | |
758 | if p1 is None: p1 = self.tip() |
|
863 | if p1 is None: p1 = self.tip() | |
759 | if p2 is None: p2 = nullid |
|
864 | if p2 is None: p2 = nullid | |
760 |
|
865 | |||
761 | node = hash(text, p1, p2) |
|
866 | node = hash(text, p1, p2) | |
762 |
|
867 | |||
763 | if node in self.nodemap: |
|
868 | if node in self.nodemap: | |
764 | return node |
|
869 | return node | |
765 |
|
870 | |||
766 | n = self.count() |
|
871 | n = self.count() | |
767 | t = n - 1 |
|
872 | t = n - 1 | |
768 |
|
873 | |||
769 | if n: |
|
874 | if n: | |
770 | base = self.base(t) |
|
875 | base = self.base(t) | |
771 | start = self.start(base) |
|
876 | start = self.start(base) | |
772 | end = self.end(t) |
|
877 | end = self.end(t) | |
773 | if not d: |
|
878 | if not d: | |
774 | prev = self.revision(self.tip()) |
|
879 | prev = self.revision(self.tip()) | |
775 | d = self.diff(prev, str(text)) |
|
880 | d = self.diff(prev, str(text)) | |
776 | data = compress(d) |
|
881 | data = compress(d) | |
777 | l = len(data[1]) + len(data[0]) |
|
882 | l = len(data[1]) + len(data[0]) | |
778 | dist = end - start + l |
|
883 | dist = end - start + l | |
779 |
|
884 | |||
780 | # full versions are inserted when the needed deltas |
|
885 | # full versions are inserted when the needed deltas | |
781 | # become comparable to the uncompressed text |
|
886 | # become comparable to the uncompressed text | |
782 | if not n or dist > len(text) * 2: |
|
887 | if not n or dist > len(text) * 2: | |
783 | data = compress(text) |
|
888 | data = compress(text) | |
784 | l = len(data[1]) + len(data[0]) |
|
889 | l = len(data[1]) + len(data[0]) | |
785 | base = n |
|
890 | base = n | |
786 | else: |
|
891 | else: | |
787 | base = self.base(t) |
|
892 | base = self.base(t) | |
788 |
|
893 | |||
789 | offset = 0 |
|
894 | offset = 0 | |
790 | if t >= 0: |
|
895 | if t >= 0: | |
791 | offset = self.end(t) |
|
896 | offset = self.end(t) | |
792 |
|
897 | |||
793 | if self.version == 0: |
|
898 | if self.version == 0: | |
794 | e = (offset, l, base, link, p1, p2, node) |
|
899 | e = (offset, l, base, link, p1, p2, node) | |
795 | else: |
|
900 | else: | |
796 | e = (self.offset_type(offset, 0), l, len(text), |
|
901 | e = (self.offset_type(offset, 0), l, len(text), | |
797 | base, link, self.rev(p1), self.rev(p2), node) |
|
902 | base, link, self.rev(p1), self.rev(p2), node) | |
798 |
|
903 | |||
799 | self.index.append(e) |
|
904 | self.index.append(e) | |
800 | self.nodemap[node] = n |
|
905 | self.nodemap[node] = n | |
801 | entry = struct.pack(self.indexformat, *e) |
|
906 | entry = struct.pack(self.indexformat, *e) | |
802 |
|
907 | |||
803 | if not self.inlinedata(): |
|
908 | if not self.inlinedata(): | |
804 | transaction.add(self.datafile, offset) |
|
909 | transaction.add(self.datafile, offset) | |
805 | transaction.add(self.indexfile, n * len(entry)) |
|
910 | transaction.add(self.indexfile, n * len(entry)) | |
806 | f = self.opener(self.datafile, "a") |
|
911 | f = self.opener(self.datafile, "a") | |
807 | if data[0]: |
|
912 | if data[0]: | |
808 | f.write(data[0]) |
|
913 | f.write(data[0]) | |
809 | f.write(data[1]) |
|
914 | f.write(data[1]) | |
810 | f = self.opener(self.indexfile, "a") |
|
915 | f = self.opener(self.indexfile, "a") | |
811 | else: |
|
916 | else: | |
812 | f = self.opener(self.indexfile, "a+") |
|
917 | f = self.opener(self.indexfile, "a+") | |
813 | f.seek(0, 2) |
|
918 | f.seek(0, 2) | |
814 | transaction.add(self.indexfile, f.tell()) |
|
919 | transaction.add(self.indexfile, f.tell()) | |
815 |
|
920 | |||
816 | if len(self.index) == 1 and self.version != 0: |
|
921 | if len(self.index) == 1 and self.version != 0: | |
817 | l = struct.pack(versionformat, self.version) |
|
922 | l = struct.pack(versionformat, self.version) | |
818 | f.write(l) |
|
923 | f.write(l) | |
819 | entry = entry[4:] |
|
924 | entry = entry[4:] | |
820 |
|
925 | |||
821 | f.write(entry) |
|
926 | f.write(entry) | |
822 |
|
927 | |||
823 | if self.inlinedata(): |
|
928 | if self.inlinedata(): | |
824 | f.write(data[0]) |
|
929 | f.write(data[0]) | |
825 | f.write(data[1]) |
|
930 | f.write(data[1]) | |
826 | self.checkinlinesize(transaction, f) |
|
931 | self.checkinlinesize(transaction, f) | |
827 |
|
932 | |||
828 | self.cache = (node, n, text) |
|
933 | self.cache = (node, n, text) | |
829 | return node |
|
934 | return node | |
830 |
|
935 | |||
831 | def ancestor(self, a, b): |
|
936 | def ancestor(self, a, b): | |
832 | """calculate the least common ancestor of nodes a and b""" |
|
937 | """calculate the least common ancestor of nodes a and b""" | |
833 | # calculate the distance of every node from root |
|
938 | # calculate the distance of every node from root | |
834 | dist = {nullid: 0} |
|
939 | dist = {nullid: 0} | |
835 | for i in xrange(self.count()): |
|
940 | for i in xrange(self.count()): | |
836 | n = self.node(i) |
|
941 | n = self.node(i) | |
837 | p1, p2 = self.parents(n) |
|
942 | p1, p2 = self.parents(n) | |
838 | dist[n] = max(dist[p1], dist[p2]) + 1 |
|
943 | dist[n] = max(dist[p1], dist[p2]) + 1 | |
839 |
|
944 | |||
840 | # traverse ancestors in order of decreasing distance from root |
|
945 | # traverse ancestors in order of decreasing distance from root | |
841 | def ancestors(node): |
|
946 | def ancestors(node): | |
842 | # we store negative distances because heap returns smallest member |
|
947 | # we store negative distances because heap returns smallest member | |
843 | h = [(-dist[node], node)] |
|
948 | h = [(-dist[node], node)] | |
844 | seen = {} |
|
949 | seen = {} | |
845 | while h: |
|
950 | while h: | |
846 | d, n = heapq.heappop(h) |
|
951 | d, n = heapq.heappop(h) | |
847 | if n not in seen: |
|
952 | if n not in seen: | |
848 | seen[n] = 1 |
|
953 | seen[n] = 1 | |
849 | yield (-d, n) |
|
954 | yield (-d, n) | |
850 | for p in self.parents(n): |
|
955 | for p in self.parents(n): | |
851 | heapq.heappush(h, (-dist[p], p)) |
|
956 | heapq.heappush(h, (-dist[p], p)) | |
852 |
|
957 | |||
853 | def generations(node): |
|
958 | def generations(node): | |
854 | sg, s = None, {} |
|
959 | sg, s = None, {} | |
855 | for g,n in ancestors(node): |
|
960 | for g,n in ancestors(node): | |
856 | if g != sg: |
|
961 | if g != sg: | |
857 | if sg: |
|
962 | if sg: | |
858 | yield sg, s |
|
963 | yield sg, s | |
859 | sg, s = g, {n:1} |
|
964 | sg, s = g, {n:1} | |
860 | else: |
|
965 | else: | |
861 | s[n] = 1 |
|
966 | s[n] = 1 | |
862 | yield sg, s |
|
967 | yield sg, s | |
863 |
|
968 | |||
864 | x = generations(a) |
|
969 | x = generations(a) | |
865 | y = generations(b) |
|
970 | y = generations(b) | |
866 | gx = x.next() |
|
971 | gx = x.next() | |
867 | gy = y.next() |
|
972 | gy = y.next() | |
868 |
|
973 | |||
869 | # increment each ancestor list until it is closer to root than |
|
974 | # increment each ancestor list until it is closer to root than | |
870 | # the other, or they match |
|
975 | # the other, or they match | |
871 | while 1: |
|
976 | while 1: | |
872 | #print "ancestor gen %s %s" % (gx[0], gy[0]) |
|
977 | #print "ancestor gen %s %s" % (gx[0], gy[0]) | |
873 | if gx[0] == gy[0]: |
|
978 | if gx[0] == gy[0]: | |
874 | # find the intersection |
|
979 | # find the intersection | |
875 | i = [ n for n in gx[1] if n in gy[1] ] |
|
980 | i = [ n for n in gx[1] if n in gy[1] ] | |
876 | if i: |
|
981 | if i: | |
877 | return i[0] |
|
982 | return i[0] | |
878 | else: |
|
983 | else: | |
879 | #print "next" |
|
984 | #print "next" | |
880 | gy = y.next() |
|
985 | gy = y.next() | |
881 | gx = x.next() |
|
986 | gx = x.next() | |
882 | elif gx[0] < gy[0]: |
|
987 | elif gx[0] < gy[0]: | |
883 | #print "next y" |
|
988 | #print "next y" | |
884 | gy = y.next() |
|
989 | gy = y.next() | |
885 | else: |
|
990 | else: | |
886 | #print "next x" |
|
991 | #print "next x" | |
887 | gx = x.next() |
|
992 | gx = x.next() | |
888 |
|
993 | |||
889 | def group(self, nodelist, lookup, infocollect=None): |
|
994 | def group(self, nodelist, lookup, infocollect=None): | |
890 | """calculate a delta group |
|
995 | """calculate a delta group | |
891 |
|
996 | |||
892 | Given a list of changeset revs, return a set of deltas and |
|
997 | Given a list of changeset revs, return a set of deltas and | |
893 | metadata corresponding to nodes. the first delta is |
|
998 | metadata corresponding to nodes. the first delta is | |
894 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to |
|
999 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
895 | have this parent as it has all history before these |
|
1000 | have this parent as it has all history before these | |
896 | changesets. parent is parent[0] |
|
1001 | changesets. parent is parent[0] | |
897 | """ |
|
1002 | """ | |
898 | revs = [self.rev(n) for n in nodelist] |
|
1003 | revs = [self.rev(n) for n in nodelist] | |
899 |
|
1004 | |||
900 | # if we don't have any revisions touched by these changesets, bail |
|
1005 | # if we don't have any revisions touched by these changesets, bail | |
901 | if not revs: |
|
1006 | if not revs: | |
902 | yield changegroup.closechunk() |
|
1007 | yield changegroup.closechunk() | |
903 | return |
|
1008 | return | |
904 |
|
1009 | |||
905 | # add the parent of the first rev |
|
1010 | # add the parent of the first rev | |
906 | p = self.parents(self.node(revs[0]))[0] |
|
1011 | p = self.parents(self.node(revs[0]))[0] | |
907 | revs.insert(0, self.rev(p)) |
|
1012 | revs.insert(0, self.rev(p)) | |
908 |
|
1013 | |||
909 | # build deltas |
|
1014 | # build deltas | |
910 | for d in xrange(0, len(revs) - 1): |
|
1015 | for d in xrange(0, len(revs) - 1): | |
911 | a, b = revs[d], revs[d + 1] |
|
1016 | a, b = revs[d], revs[d + 1] | |
912 | nb = self.node(b) |
|
1017 | nb = self.node(b) | |
913 |
|
1018 | |||
914 | if infocollect is not None: |
|
1019 | if infocollect is not None: | |
915 | infocollect(nb) |
|
1020 | infocollect(nb) | |
916 |
|
1021 | |||
917 | d = self.revdiff(a, b) |
|
1022 | d = self.revdiff(a, b) | |
918 | p = self.parents(nb) |
|
1023 | p = self.parents(nb) | |
919 | meta = nb + p[0] + p[1] + lookup(nb) |
|
1024 | meta = nb + p[0] + p[1] + lookup(nb) | |
920 | yield changegroup.genchunk("%s%s" % (meta, d)) |
|
1025 | yield changegroup.genchunk("%s%s" % (meta, d)) | |
921 |
|
1026 | |||
922 | yield changegroup.closechunk() |
|
1027 | yield changegroup.closechunk() | |
923 |
|
1028 | |||
924 | def addgroup(self, revs, linkmapper, transaction, unique=0): |
|
1029 | def addgroup(self, revs, linkmapper, transaction, unique=0): | |
925 | """ |
|
1030 | """ | |
926 | add a delta group |
|
1031 | add a delta group | |
927 |
|
1032 | |||
928 | given a set of deltas, add them to the revision log. the |
|
1033 | given a set of deltas, add them to the revision log. the | |
929 | first delta is against its parent, which should be in our |
|
1034 | first delta is against its parent, which should be in our | |
930 | log, the rest are against the previous delta. |
|
1035 | log, the rest are against the previous delta. | |
931 | """ |
|
1036 | """ | |
932 |
|
1037 | |||
933 | #track the base of the current delta log |
|
1038 | #track the base of the current delta log | |
934 | r = self.count() |
|
1039 | r = self.count() | |
935 | t = r - 1 |
|
1040 | t = r - 1 | |
936 | node = None |
|
1041 | node = None | |
937 |
|
1042 | |||
938 | base = prev = -1 |
|
1043 | base = prev = -1 | |
939 | start = end = textlen = 0 |
|
1044 | start = end = textlen = 0 | |
940 | if r: |
|
1045 | if r: | |
941 | end = self.end(t) |
|
1046 | end = self.end(t) | |
942 |
|
1047 | |||
943 | ifh = self.opener(self.indexfile, "a+") |
|
1048 | ifh = self.opener(self.indexfile, "a+") | |
944 | ifh.seek(0, 2) |
|
1049 | ifh.seek(0, 2) | |
945 | transaction.add(self.indexfile, ifh.tell()) |
|
1050 | transaction.add(self.indexfile, ifh.tell()) | |
946 | if self.inlinedata(): |
|
1051 | if self.inlinedata(): | |
947 | dfh = None |
|
1052 | dfh = None | |
948 | else: |
|
1053 | else: | |
949 | transaction.add(self.datafile, end) |
|
1054 | transaction.add(self.datafile, end) | |
950 | dfh = self.opener(self.datafile, "a") |
|
1055 | dfh = self.opener(self.datafile, "a") | |
951 |
|
1056 | |||
952 | # loop through our set of deltas |
|
1057 | # loop through our set of deltas | |
953 | chain = None |
|
1058 | chain = None | |
954 | for chunk in revs: |
|
1059 | for chunk in revs: | |
955 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) |
|
1060 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
956 | link = linkmapper(cs) |
|
1061 | link = linkmapper(cs) | |
957 | if node in self.nodemap: |
|
1062 | if node in self.nodemap: | |
958 | # this can happen if two branches make the same change |
|
1063 | # this can happen if two branches make the same change | |
959 | # if unique: |
|
1064 | # if unique: | |
960 | # raise RevlogError(_("already have %s") % hex(node[:4])) |
|
1065 | # raise RevlogError(_("already have %s") % hex(node[:4])) | |
961 | chain = node |
|
1066 | chain = node | |
962 | continue |
|
1067 | continue | |
963 | delta = chunk[80:] |
|
1068 | delta = chunk[80:] | |
964 |
|
1069 | |||
965 | for p in (p1, p2): |
|
1070 | for p in (p1, p2): | |
966 | if not p in self.nodemap: |
|
1071 | if not p in self.nodemap: | |
967 | raise RevlogError(_("unknown parent %s") % short(p1)) |
|
1072 | raise RevlogError(_("unknown parent %s") % short(p1)) | |
968 |
|
1073 | |||
969 | if not chain: |
|
1074 | if not chain: | |
970 | # retrieve the parent revision of the delta chain |
|
1075 | # retrieve the parent revision of the delta chain | |
971 | chain = p1 |
|
1076 | chain = p1 | |
972 | if not chain in self.nodemap: |
|
1077 | if not chain in self.nodemap: | |
973 | raise RevlogError(_("unknown base %s") % short(chain[:4])) |
|
1078 | raise RevlogError(_("unknown base %s") % short(chain[:4])) | |
974 |
|
1079 | |||
975 | # full versions are inserted when the needed deltas become |
|
1080 | # full versions are inserted when the needed deltas become | |
976 | # comparable to the uncompressed text or when the previous |
|
1081 | # comparable to the uncompressed text or when the previous | |
977 | # version is not the one we have a delta against. We use |
|
1082 | # 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 |
|
1083 | # the size of the previous full rev as a proxy for the | |
979 | # current size. |
|
1084 | # current size. | |
980 |
|
1085 | |||
981 | if chain == prev: |
|
1086 | if chain == prev: | |
982 | tempd = compress(delta) |
|
1087 | tempd = compress(delta) | |
983 | cdelta = tempd[0] + tempd[1] |
|
1088 | cdelta = tempd[0] + tempd[1] | |
984 | textlen = mdiff.patchedsize(textlen, delta) |
|
1089 | textlen = mdiff.patchedsize(textlen, delta) | |
985 |
|
1090 | |||
986 | if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
|
1091 | if chain != prev or (end - start + len(cdelta)) > textlen * 2: | |
987 | # flush our writes here so we can read it in revision |
|
1092 | # flush our writes here so we can read it in revision | |
988 | if dfh: |
|
1093 | if dfh: | |
989 | dfh.flush() |
|
1094 | dfh.flush() | |
990 | ifh.flush() |
|
1095 | ifh.flush() | |
991 | text = self.revision(chain) |
|
1096 | text = self.revision(chain) | |
992 | text = self.patches(text, [delta]) |
|
1097 | text = self.patches(text, [delta]) | |
993 | chk = self.addrevision(text, transaction, link, p1, p2) |
|
1098 | chk = self.addrevision(text, transaction, link, p1, p2) | |
994 | if chk != node: |
|
1099 | if chk != node: | |
995 | raise RevlogError(_("consistency error adding group")) |
|
1100 | raise RevlogError(_("consistency error adding group")) | |
996 | textlen = len(text) |
|
1101 | textlen = len(text) | |
997 | else: |
|
1102 | else: | |
998 | if self.version == 0: |
|
1103 | if self.version == 0: | |
999 | e = (end, len(cdelta), base, link, p1, p2, node) |
|
1104 | e = (end, len(cdelta), base, link, p1, p2, node) | |
1000 | else: |
|
1105 | else: | |
1001 | e = (self.offset_type(end, 0), len(cdelta), textlen, base, |
|
1106 | e = (self.offset_type(end, 0), len(cdelta), textlen, base, | |
1002 | link, self.rev(p1), self.rev(p2), node) |
|
1107 | link, self.rev(p1), self.rev(p2), node) | |
1003 | self.index.append(e) |
|
1108 | self.index.append(e) | |
1004 | self.nodemap[node] = r |
|
1109 | self.nodemap[node] = r | |
1005 | if self.inlinedata(): |
|
1110 | if self.inlinedata(): | |
1006 | ifh.write(struct.pack(self.indexformat, *e)) |
|
1111 | ifh.write(struct.pack(self.indexformat, *e)) | |
1007 | ifh.write(cdelta) |
|
1112 | ifh.write(cdelta) | |
1008 | self.checkinlinesize(transaction, ifh) |
|
1113 | self.checkinlinesize(transaction, ifh) | |
1009 | if not self.inlinedata(): |
|
1114 | if not self.inlinedata(): | |
1010 | dfh = self.opener(self.datafile, "a") |
|
1115 | dfh = self.opener(self.datafile, "a") | |
1011 | ifh = self.opener(self.indexfile, "a") |
|
1116 | ifh = self.opener(self.indexfile, "a") | |
1012 | else: |
|
1117 | else: | |
1013 | if not dfh: |
|
1118 | if not dfh: | |
1014 | # addrevision switched from inline to conventional |
|
1119 | # addrevision switched from inline to conventional | |
1015 | # reopen the index |
|
1120 | # reopen the index | |
1016 | dfh = self.opener(self.datafile, "a") |
|
1121 | dfh = self.opener(self.datafile, "a") | |
1017 | ifh = self.opener(self.indexfile, "a") |
|
1122 | ifh = self.opener(self.indexfile, "a") | |
1018 | dfh.write(cdelta) |
|
1123 | dfh.write(cdelta) | |
1019 | ifh.write(struct.pack(self.indexformat, *e)) |
|
1124 | ifh.write(struct.pack(self.indexformat, *e)) | |
1020 |
|
1125 | |||
1021 | t, r, chain, prev = r, r + 1, node, node |
|
1126 | t, r, chain, prev = r, r + 1, node, node | |
1022 | base = self.base(t) |
|
1127 | base = self.base(t) | |
1023 | start = self.start(base) |
|
1128 | start = self.start(base) | |
1024 | end = self.end(t) |
|
1129 | end = self.end(t) | |
1025 |
|
1130 | |||
1026 | if node is None: |
|
1131 | if node is None: | |
1027 | raise RevlogError(_("group to be added is empty")) |
|
1132 | raise RevlogError(_("group to be added is empty")) | |
1028 | return node |
|
1133 | return node | |
1029 |
|
1134 | |||
1030 | def strip(self, rev, minlink): |
|
1135 | def strip(self, rev, minlink): | |
1031 | if self.count() == 0 or rev >= self.count(): |
|
1136 | if self.count() == 0 or rev >= self.count(): | |
1032 | return |
|
1137 | return | |
1033 |
|
1138 | |||
1034 | if isinstance(self.index, lazyindex): |
|
1139 | if isinstance(self.index, lazyindex): | |
1035 | self.loadindexmap() |
|
1140 | self.loadindexmap() | |
1036 |
|
1141 | |||
1037 | # When stripping away a revision, we need to make sure it |
|
1142 | # When stripping away a revision, we need to make sure it | |
1038 | # does not actually belong to an older changeset. |
|
1143 | # does not actually belong to an older changeset. | |
1039 | # The minlink parameter defines the oldest revision |
|
1144 | # The minlink parameter defines the oldest revision | |
1040 | # we're allowed to strip away. |
|
1145 | # we're allowed to strip away. | |
1041 | while minlink > self.index[rev][-4]: |
|
1146 | while minlink > self.index[rev][-4]: | |
1042 | rev += 1 |
|
1147 | rev += 1 | |
1043 | if rev >= self.count(): |
|
1148 | if rev >= self.count(): | |
1044 | return |
|
1149 | return | |
1045 |
|
1150 | |||
1046 | # first truncate the files on disk |
|
1151 | # first truncate the files on disk | |
1047 | end = self.start(rev) |
|
1152 | end = self.start(rev) | |
1048 | if not self.inlinedata(): |
|
1153 | if not self.inlinedata(): | |
1049 | df = self.opener(self.datafile, "a") |
|
1154 | df = self.opener(self.datafile, "a") | |
1050 | df.truncate(end) |
|
1155 | df.truncate(end) | |
1051 | end = rev * struct.calcsize(self.indexformat) |
|
1156 | end = rev * struct.calcsize(self.indexformat) | |
1052 | else: |
|
1157 | else: | |
1053 | end += rev * struct.calcsize(self.indexformat) |
|
1158 | end += rev * struct.calcsize(self.indexformat) | |
1054 |
|
1159 | |||
1055 | indexf = self.opener(self.indexfile, "a") |
|
1160 | indexf = self.opener(self.indexfile, "a") | |
1056 | indexf.truncate(end) |
|
1161 | indexf.truncate(end) | |
1057 |
|
1162 | |||
1058 | # then reset internal state in memory to forget those revisions |
|
1163 | # then reset internal state in memory to forget those revisions | |
1059 | self.cache = None |
|
1164 | self.cache = None | |
1060 | self.chunkcache = None |
|
1165 | self.chunkcache = None | |
1061 | for x in xrange(rev, self.count()): |
|
1166 | for x in xrange(rev, self.count()): | |
1062 | del self.nodemap[self.node(x)] |
|
1167 | del self.nodemap[self.node(x)] | |
1063 |
|
1168 | |||
1064 | del self.index[rev:] |
|
1169 | del self.index[rev:] | |
1065 |
|
1170 | |||
1066 | def checksize(self): |
|
1171 | def checksize(self): | |
1067 | expected = 0 |
|
1172 | expected = 0 | |
1068 | if self.count(): |
|
1173 | if self.count(): | |
1069 | expected = self.end(self.count() - 1) |
|
1174 | expected = self.end(self.count() - 1) | |
1070 |
|
1175 | |||
1071 | try: |
|
1176 | try: | |
1072 | f = self.opener(self.datafile) |
|
1177 | f = self.opener(self.datafile) | |
1073 | f.seek(0, 2) |
|
1178 | f.seek(0, 2) | |
1074 | actual = f.tell() |
|
1179 | actual = f.tell() | |
1075 | dd = actual - expected |
|
1180 | dd = actual - expected | |
1076 | except IOError, inst: |
|
1181 | except IOError, inst: | |
1077 | if inst.errno != errno.ENOENT: |
|
1182 | if inst.errno != errno.ENOENT: | |
1078 | raise |
|
1183 | raise | |
1079 | dd = 0 |
|
1184 | dd = 0 | |
1080 |
|
1185 | |||
1081 | try: |
|
1186 | try: | |
1082 | f = self.opener(self.indexfile) |
|
1187 | f = self.opener(self.indexfile) | |
1083 | f.seek(0, 2) |
|
1188 | f.seek(0, 2) | |
1084 | actual = f.tell() |
|
1189 | actual = f.tell() | |
1085 | s = struct.calcsize(self.indexformat) |
|
1190 | s = struct.calcsize(self.indexformat) | |
1086 | i = actual / s |
|
1191 | i = actual / s | |
1087 | di = actual - (i * s) |
|
1192 | di = actual - (i * s) | |
1088 | if self.inlinedata(): |
|
1193 | if self.inlinedata(): | |
1089 | databytes = 0 |
|
1194 | databytes = 0 | |
1090 | for r in xrange(self.count()): |
|
1195 | for r in xrange(self.count()): | |
1091 | databytes += self.length(r) |
|
1196 | databytes += self.length(r) | |
1092 | dd = 0 |
|
1197 | dd = 0 | |
1093 | di = actual - self.count() * s - databytes |
|
1198 | di = actual - self.count() * s - databytes | |
1094 | except IOError, inst: |
|
1199 | except IOError, inst: | |
1095 | if inst.errno != errno.ENOENT: |
|
1200 | if inst.errno != errno.ENOENT: | |
1096 | raise |
|
1201 | raise | |
1097 | di = 0 |
|
1202 | di = 0 | |
1098 |
|
1203 | |||
1099 | return (dd, di) |
|
1204 | return (dd, di) | |
1100 |
|
1205 | |||
1101 |
|
1206 |
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