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@@ -1,1389 +1,1385 b'' | |||||
1 | # revlog.py - storage back-end for mercurial |
|
1 | # revlog.py - storage back-end for mercurial | |
2 | # |
|
2 | # | |
3 | # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
|
3 | # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> | |
4 | # |
|
4 | # | |
5 | # This software may be used and distributed according to the terms of the |
|
5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2, incorporated herein by reference. |
|
6 | # GNU General Public License version 2, incorporated herein by reference. | |
7 |
|
7 | |||
8 | """Storage back-end for Mercurial. |
|
8 | """Storage back-end for Mercurial. | |
9 |
|
9 | |||
10 | This provides efficient delta storage with O(1) retrieve and append |
|
10 | This provides efficient delta storage with O(1) retrieve and append | |
11 | and O(changes) merge between branches. |
|
11 | and O(changes) merge between branches. | |
12 | """ |
|
12 | """ | |
13 |
|
13 | |||
14 | # import stuff from node for others to import from revlog |
|
14 | # import stuff from node for others to import from revlog | |
15 | from node import bin, hex, nullid, nullrev, short #@UnusedImport |
|
15 | from node import bin, hex, nullid, nullrev, short #@UnusedImport | |
16 | from i18n import _ |
|
16 | from i18n import _ | |
17 | import changegroup, ancestor, mdiff, parsers, error, util |
|
17 | import changegroup, ancestor, mdiff, parsers, error, util | |
18 | import struct, zlib, errno |
|
18 | import struct, zlib, errno | |
19 |
|
19 | |||
20 | _pack = struct.pack |
|
20 | _pack = struct.pack | |
21 | _unpack = struct.unpack |
|
21 | _unpack = struct.unpack | |
22 | _compress = zlib.compress |
|
22 | _compress = zlib.compress | |
23 | _decompress = zlib.decompress |
|
23 | _decompress = zlib.decompress | |
24 | _sha = util.sha1 |
|
24 | _sha = util.sha1 | |
25 |
|
25 | |||
26 | # revlog flags |
|
26 | # revlog flags | |
27 | REVLOGV0 = 0 |
|
27 | REVLOGV0 = 0 | |
28 | REVLOGNG = 1 |
|
28 | REVLOGNG = 1 | |
29 | REVLOGNGINLINEDATA = (1 << 16) |
|
29 | REVLOGNGINLINEDATA = (1 << 16) | |
30 | REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA |
|
30 | REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA | |
31 | REVLOG_DEFAULT_FORMAT = REVLOGNG |
|
31 | REVLOG_DEFAULT_FORMAT = REVLOGNG | |
32 | REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
|
32 | REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS | |
33 |
|
33 | |||
34 | _prereadsize = 1048576 |
|
34 | _prereadsize = 1048576 | |
35 |
|
35 | |||
36 | RevlogError = error.RevlogError |
|
36 | RevlogError = error.RevlogError | |
37 | LookupError = error.LookupError |
|
37 | LookupError = error.LookupError | |
38 |
|
38 | |||
39 | def getoffset(q): |
|
39 | def getoffset(q): | |
40 | return int(q >> 16) |
|
40 | return int(q >> 16) | |
41 |
|
41 | |||
42 | def gettype(q): |
|
42 | def gettype(q): | |
43 | return int(q & 0xFFFF) |
|
43 | return int(q & 0xFFFF) | |
44 |
|
44 | |||
45 | def offset_type(offset, type): |
|
45 | def offset_type(offset, type): | |
46 | return long(long(offset) << 16 | type) |
|
46 | return long(long(offset) << 16 | type) | |
47 |
|
47 | |||
48 | nullhash = _sha(nullid) |
|
48 | nullhash = _sha(nullid) | |
49 |
|
49 | |||
50 | def hash(text, p1, p2): |
|
50 | def hash(text, p1, p2): | |
51 | """generate a hash from the given text and its parent hashes |
|
51 | """generate a hash from the given text and its parent hashes | |
52 |
|
52 | |||
53 | This hash combines both the current file contents and its history |
|
53 | This hash combines both the current file contents and its history | |
54 | in a manner that makes it easy to distinguish nodes with the same |
|
54 | in a manner that makes it easy to distinguish nodes with the same | |
55 | content in the revision graph. |
|
55 | content in the revision graph. | |
56 | """ |
|
56 | """ | |
57 | # As of now, if one of the parent node is null, p2 is null |
|
57 | # As of now, if one of the parent node is null, p2 is null | |
58 | if p2 == nullid: |
|
58 | if p2 == nullid: | |
59 | # deep copy of a hash is faster than creating one |
|
59 | # deep copy of a hash is faster than creating one | |
60 | s = nullhash.copy() |
|
60 | s = nullhash.copy() | |
61 | s.update(p1) |
|
61 | s.update(p1) | |
62 | else: |
|
62 | else: | |
63 | # none of the parent nodes are nullid |
|
63 | # none of the parent nodes are nullid | |
64 | l = [p1, p2] |
|
64 | l = [p1, p2] | |
65 | l.sort() |
|
65 | l.sort() | |
66 | s = _sha(l[0]) |
|
66 | s = _sha(l[0]) | |
67 | s.update(l[1]) |
|
67 | s.update(l[1]) | |
68 | s.update(text) |
|
68 | s.update(text) | |
69 | return s.digest() |
|
69 | return s.digest() | |
70 |
|
70 | |||
71 | def compress(text): |
|
71 | def compress(text): | |
72 | """ generate a possibly-compressed representation of text """ |
|
72 | """ generate a possibly-compressed representation of text """ | |
73 | if not text: |
|
73 | if not text: | |
74 | return ("", text) |
|
74 | return ("", text) | |
75 | l = len(text) |
|
75 | l = len(text) | |
76 | bin = None |
|
76 | bin = None | |
77 | if l < 44: |
|
77 | if l < 44: | |
78 | pass |
|
78 | pass | |
79 | elif l > 1000000: |
|
79 | elif l > 1000000: | |
80 | # zlib makes an internal copy, thus doubling memory usage for |
|
80 | # zlib makes an internal copy, thus doubling memory usage for | |
81 | # large files, so lets do this in pieces |
|
81 | # large files, so lets do this in pieces | |
82 | z = zlib.compressobj() |
|
82 | z = zlib.compressobj() | |
83 | p = [] |
|
83 | p = [] | |
84 | pos = 0 |
|
84 | pos = 0 | |
85 | while pos < l: |
|
85 | while pos < l: | |
86 | pos2 = pos + 2**20 |
|
86 | pos2 = pos + 2**20 | |
87 | p.append(z.compress(text[pos:pos2])) |
|
87 | p.append(z.compress(text[pos:pos2])) | |
88 | pos = pos2 |
|
88 | pos = pos2 | |
89 | p.append(z.flush()) |
|
89 | p.append(z.flush()) | |
90 | if sum(map(len, p)) < l: |
|
90 | if sum(map(len, p)) < l: | |
91 | bin = "".join(p) |
|
91 | bin = "".join(p) | |
92 | else: |
|
92 | else: | |
93 | bin = _compress(text) |
|
93 | bin = _compress(text) | |
94 | if bin is None or len(bin) > l: |
|
94 | if bin is None or len(bin) > l: | |
95 | if text[0] == '\0': |
|
95 | if text[0] == '\0': | |
96 | return ("", text) |
|
96 | return ("", text) | |
97 | return ('u', text) |
|
97 | return ('u', text) | |
98 | return ("", bin) |
|
98 | return ("", bin) | |
99 |
|
99 | |||
100 | def decompress(bin): |
|
100 | def decompress(bin): | |
101 | """ decompress the given input """ |
|
101 | """ decompress the given input """ | |
102 | if not bin: |
|
102 | if not bin: | |
103 | return bin |
|
103 | return bin | |
104 | t = bin[0] |
|
104 | t = bin[0] | |
105 | if t == '\0': |
|
105 | if t == '\0': | |
106 | return bin |
|
106 | return bin | |
107 | if t == 'x': |
|
107 | if t == 'x': | |
108 | return _decompress(bin) |
|
108 | return _decompress(bin) | |
109 | if t == 'u': |
|
109 | if t == 'u': | |
110 | return bin[1:] |
|
110 | return bin[1:] | |
111 | raise RevlogError(_("unknown compression type %r") % t) |
|
111 | raise RevlogError(_("unknown compression type %r") % t) | |
112 |
|
112 | |||
113 | class lazyparser(object): |
|
113 | class lazyparser(object): | |
114 | """ |
|
114 | """ | |
115 | this class avoids the need to parse the entirety of large indices |
|
115 | this class avoids the need to parse the entirety of large indices | |
116 | """ |
|
116 | """ | |
117 |
|
117 | |||
118 | # lazyparser is not safe to use on windows if win32 extensions not |
|
118 | # lazyparser is not safe to use on windows if win32 extensions not | |
119 | # available. it keeps file handle open, which make it not possible |
|
119 | # available. it keeps file handle open, which make it not possible | |
120 | # to break hardlinks on local cloned repos. |
|
120 | # to break hardlinks on local cloned repos. | |
121 |
|
121 | |||
122 | def __init__(self, dataf, size): |
|
122 | def __init__(self, dataf, size): | |
123 | self.dataf = dataf |
|
123 | self.dataf = dataf | |
124 | self.s = struct.calcsize(indexformatng) |
|
124 | self.s = struct.calcsize(indexformatng) | |
125 | self.datasize = size |
|
125 | self.datasize = size | |
126 | self.l = size/self.s |
|
126 | self.l = size/self.s | |
127 | self.index = [None] * self.l |
|
127 | self.index = [None] * self.l | |
128 | self.map = {nullid: nullrev} |
|
128 | self.map = {nullid: nullrev} | |
129 | self.allmap = 0 |
|
129 | self.allmap = 0 | |
130 | self.all = 0 |
|
130 | self.all = 0 | |
131 | self.mapfind_count = 0 |
|
131 | self.mapfind_count = 0 | |
132 |
|
132 | |||
133 | def loadmap(self): |
|
133 | def loadmap(self): | |
134 | """ |
|
134 | """ | |
135 | during a commit, we need to make sure the rev being added is |
|
135 | during a commit, we need to make sure the rev being added is | |
136 | not a duplicate. This requires loading the entire index, |
|
136 | not a duplicate. This requires loading the entire index, | |
137 | which is fairly slow. loadmap can load up just the node map, |
|
137 | which is fairly slow. loadmap can load up just the node map, | |
138 | which takes much less time. |
|
138 | which takes much less time. | |
139 | """ |
|
139 | """ | |
140 | if self.allmap: |
|
140 | if self.allmap: | |
141 | return |
|
141 | return | |
142 | end = self.datasize |
|
142 | end = self.datasize | |
143 | self.allmap = 1 |
|
143 | self.allmap = 1 | |
144 | cur = 0 |
|
144 | cur = 0 | |
145 | count = 0 |
|
145 | count = 0 | |
146 | blocksize = self.s * 256 |
|
146 | blocksize = self.s * 256 | |
147 | self.dataf.seek(0) |
|
147 | self.dataf.seek(0) | |
148 | while cur < end: |
|
148 | while cur < end: | |
149 | data = self.dataf.read(blocksize) |
|
149 | data = self.dataf.read(blocksize) | |
150 | off = 0 |
|
150 | off = 0 | |
151 | for x in xrange(256): |
|
151 | for x in xrange(256): | |
152 | n = data[off + ngshaoffset:off + ngshaoffset + 20] |
|
152 | n = data[off + ngshaoffset:off + ngshaoffset + 20] | |
153 | self.map[n] = count |
|
153 | self.map[n] = count | |
154 | count += 1 |
|
154 | count += 1 | |
155 | if count >= self.l: |
|
155 | if count >= self.l: | |
156 | break |
|
156 | break | |
157 | off += self.s |
|
157 | off += self.s | |
158 | cur += blocksize |
|
158 | cur += blocksize | |
159 |
|
159 | |||
160 | def loadblock(self, blockstart, blocksize, data=None): |
|
160 | def loadblock(self, blockstart, blocksize, data=None): | |
161 | if self.all: |
|
161 | if self.all: | |
162 | return |
|
162 | return | |
163 | if data is None: |
|
163 | if data is None: | |
164 | self.dataf.seek(blockstart) |
|
164 | self.dataf.seek(blockstart) | |
165 | if blockstart + blocksize > self.datasize: |
|
165 | if blockstart + blocksize > self.datasize: | |
166 | # the revlog may have grown since we've started running, |
|
166 | # the revlog may have grown since we've started running, | |
167 | # but we don't have space in self.index for more entries. |
|
167 | # but we don't have space in self.index for more entries. | |
168 | # limit blocksize so that we don't get too much data. |
|
168 | # limit blocksize so that we don't get too much data. | |
169 | blocksize = max(self.datasize - blockstart, 0) |
|
169 | blocksize = max(self.datasize - blockstart, 0) | |
170 | data = self.dataf.read(blocksize) |
|
170 | data = self.dataf.read(blocksize) | |
171 | lend = len(data) / self.s |
|
171 | lend = len(data) / self.s | |
172 | i = blockstart / self.s |
|
172 | i = blockstart / self.s | |
173 | off = 0 |
|
173 | off = 0 | |
174 | # lazyindex supports __delitem__ |
|
174 | # lazyindex supports __delitem__ | |
175 | if lend > len(self.index) - i: |
|
175 | if lend > len(self.index) - i: | |
176 | lend = len(self.index) - i |
|
176 | lend = len(self.index) - i | |
177 | for x in xrange(lend): |
|
177 | for x in xrange(lend): | |
178 | if self.index[i + x] is None: |
|
178 | if self.index[i + x] is None: | |
179 | b = data[off : off + self.s] |
|
179 | b = data[off : off + self.s] | |
180 | self.index[i + x] = b |
|
180 | self.index[i + x] = b | |
181 | n = b[ngshaoffset:ngshaoffset + 20] |
|
181 | n = b[ngshaoffset:ngshaoffset + 20] | |
182 | self.map[n] = i + x |
|
182 | self.map[n] = i + x | |
183 | off += self.s |
|
183 | off += self.s | |
184 |
|
184 | |||
185 | def findnode(self, node): |
|
185 | def findnode(self, node): | |
186 | """search backwards through the index file for a specific node""" |
|
186 | """search backwards through the index file for a specific node""" | |
187 | if self.allmap: |
|
187 | if self.allmap: | |
188 | return None |
|
188 | return None | |
189 |
|
189 | |||
190 | # hg log will cause many many searches for the manifest |
|
190 | # hg log will cause many many searches for the manifest | |
191 | # nodes. After we get called a few times, just load the whole |
|
191 | # nodes. After we get called a few times, just load the whole | |
192 | # thing. |
|
192 | # thing. | |
193 | if self.mapfind_count > 8: |
|
193 | if self.mapfind_count > 8: | |
194 | self.loadmap() |
|
194 | self.loadmap() | |
195 | if node in self.map: |
|
195 | if node in self.map: | |
196 | return node |
|
196 | return node | |
197 | return None |
|
197 | return None | |
198 | self.mapfind_count += 1 |
|
198 | self.mapfind_count += 1 | |
199 | last = self.l - 1 |
|
199 | last = self.l - 1 | |
200 | while self.index[last] != None: |
|
200 | while self.index[last] != None: | |
201 | if last == 0: |
|
201 | if last == 0: | |
202 | self.all = 1 |
|
202 | self.all = 1 | |
203 | self.allmap = 1 |
|
203 | self.allmap = 1 | |
204 | return None |
|
204 | return None | |
205 | last -= 1 |
|
205 | last -= 1 | |
206 | end = (last + 1) * self.s |
|
206 | end = (last + 1) * self.s | |
207 | blocksize = self.s * 256 |
|
207 | blocksize = self.s * 256 | |
208 | while end >= 0: |
|
208 | while end >= 0: | |
209 | start = max(end - blocksize, 0) |
|
209 | start = max(end - blocksize, 0) | |
210 | self.dataf.seek(start) |
|
210 | self.dataf.seek(start) | |
211 | data = self.dataf.read(end - start) |
|
211 | data = self.dataf.read(end - start) | |
212 | findend = end - start |
|
212 | findend = end - start | |
213 | while True: |
|
213 | while True: | |
214 | # we're searching backwards, so we have to make sure |
|
214 | # we're searching backwards, so we have to make sure | |
215 | # we don't find a changeset where this node is a parent |
|
215 | # we don't find a changeset where this node is a parent | |
216 | off = data.find(node, 0, findend) |
|
216 | off = data.find(node, 0, findend) | |
217 | findend = off |
|
217 | findend = off | |
218 | if off >= 0: |
|
218 | if off >= 0: | |
219 | i = off / self.s |
|
219 | i = off / self.s | |
220 | off = i * self.s |
|
220 | off = i * self.s | |
221 | n = data[off + ngshaoffset:off + ngshaoffset + 20] |
|
221 | n = data[off + ngshaoffset:off + ngshaoffset + 20] | |
222 | if n == node: |
|
222 | if n == node: | |
223 | self.map[n] = i + start / self.s |
|
223 | self.map[n] = i + start / self.s | |
224 | return node |
|
224 | return node | |
225 | else: |
|
225 | else: | |
226 | break |
|
226 | break | |
227 | end -= blocksize |
|
227 | end -= blocksize | |
228 | return None |
|
228 | return None | |
229 |
|
229 | |||
230 | def loadindex(self, i=None, end=None): |
|
230 | def loadindex(self, i=None, end=None): | |
231 | if self.all: |
|
231 | if self.all: | |
232 | return |
|
232 | return | |
233 | all = False |
|
233 | all = False | |
234 | if i is None: |
|
234 | if i is None: | |
235 | blockstart = 0 |
|
235 | blockstart = 0 | |
236 | blocksize = (65536 / self.s) * self.s |
|
236 | blocksize = (65536 / self.s) * self.s | |
237 | end = self.datasize |
|
237 | end = self.datasize | |
238 | all = True |
|
238 | all = True | |
239 | else: |
|
239 | else: | |
240 | if end: |
|
240 | if end: | |
241 | blockstart = i * self.s |
|
241 | blockstart = i * self.s | |
242 | end = end * self.s |
|
242 | end = end * self.s | |
243 | blocksize = end - blockstart |
|
243 | blocksize = end - blockstart | |
244 | else: |
|
244 | else: | |
245 | blockstart = (i & ~1023) * self.s |
|
245 | blockstart = (i & ~1023) * self.s | |
246 | blocksize = self.s * 1024 |
|
246 | blocksize = self.s * 1024 | |
247 | end = blockstart + blocksize |
|
247 | end = blockstart + blocksize | |
248 | while blockstart < end: |
|
248 | while blockstart < end: | |
249 | self.loadblock(blockstart, blocksize) |
|
249 | self.loadblock(blockstart, blocksize) | |
250 | blockstart += blocksize |
|
250 | blockstart += blocksize | |
251 | if all: |
|
251 | if all: | |
252 | self.all = True |
|
252 | self.all = True | |
253 |
|
253 | |||
254 | class lazyindex(object): |
|
254 | class lazyindex(object): | |
255 | """a lazy version of the index array""" |
|
255 | """a lazy version of the index array""" | |
256 | def __init__(self, parser): |
|
256 | def __init__(self, parser): | |
257 | self.p = parser |
|
257 | self.p = parser | |
258 | def __len__(self): |
|
258 | def __len__(self): | |
259 | return len(self.p.index) |
|
259 | return len(self.p.index) | |
260 | def load(self, pos): |
|
260 | def load(self, pos): | |
261 | if pos < 0: |
|
261 | if pos < 0: | |
262 | pos += len(self.p.index) |
|
262 | pos += len(self.p.index) | |
263 | self.p.loadindex(pos) |
|
263 | self.p.loadindex(pos) | |
264 | return self.p.index[pos] |
|
264 | return self.p.index[pos] | |
265 | def __getitem__(self, pos): |
|
265 | def __getitem__(self, pos): | |
266 | return _unpack(indexformatng, self.p.index[pos] or self.load(pos)) |
|
266 | return _unpack(indexformatng, self.p.index[pos] or self.load(pos)) | |
267 | def __setitem__(self, pos, item): |
|
267 | def __setitem__(self, pos, item): | |
268 | self.p.index[pos] = _pack(indexformatng, *item) |
|
268 | self.p.index[pos] = _pack(indexformatng, *item) | |
269 | def __delitem__(self, pos): |
|
269 | def __delitem__(self, pos): | |
270 | del self.p.index[pos] |
|
270 | del self.p.index[pos] | |
271 | def insert(self, pos, e): |
|
271 | def insert(self, pos, e): | |
272 | self.p.index.insert(pos, _pack(indexformatng, *e)) |
|
272 | self.p.index.insert(pos, _pack(indexformatng, *e)) | |
273 | def append(self, e): |
|
273 | def append(self, e): | |
274 | self.p.index.append(_pack(indexformatng, *e)) |
|
274 | self.p.index.append(_pack(indexformatng, *e)) | |
275 |
|
275 | |||
276 | class lazymap(object): |
|
276 | class lazymap(object): | |
277 | """a lazy version of the node map""" |
|
277 | """a lazy version of the node map""" | |
278 | def __init__(self, parser): |
|
278 | def __init__(self, parser): | |
279 | self.p = parser |
|
279 | self.p = parser | |
280 | def load(self, key): |
|
280 | def load(self, key): | |
281 | n = self.p.findnode(key) |
|
281 | n = self.p.findnode(key) | |
282 | if n is None: |
|
282 | if n is None: | |
283 | raise KeyError(key) |
|
283 | raise KeyError(key) | |
284 | def __contains__(self, key): |
|
284 | def __contains__(self, key): | |
285 | if key in self.p.map: |
|
285 | if key in self.p.map: | |
286 | return True |
|
286 | return True | |
287 | self.p.loadmap() |
|
287 | self.p.loadmap() | |
288 | return key in self.p.map |
|
288 | return key in self.p.map | |
289 | def __iter__(self): |
|
289 | def __iter__(self): | |
290 | yield nullid |
|
290 | yield nullid | |
291 | for i in xrange(self.p.l): |
|
291 | for i in xrange(self.p.l): | |
292 | ret = self.p.index[i] |
|
292 | ret = self.p.index[i] | |
293 | if not ret: |
|
293 | if not ret: | |
294 | self.p.loadindex(i) |
|
294 | self.p.loadindex(i) | |
295 | ret = self.p.index[i] |
|
295 | ret = self.p.index[i] | |
296 | if isinstance(ret, str): |
|
296 | if isinstance(ret, str): | |
297 | ret = _unpack(indexformatng, ret) |
|
297 | ret = _unpack(indexformatng, ret) | |
298 | yield ret[7] |
|
298 | yield ret[7] | |
299 | def __getitem__(self, key): |
|
299 | def __getitem__(self, key): | |
300 | try: |
|
300 | try: | |
301 | return self.p.map[key] |
|
301 | return self.p.map[key] | |
302 | except KeyError: |
|
302 | except KeyError: | |
303 | try: |
|
303 | try: | |
304 | self.load(key) |
|
304 | self.load(key) | |
305 | return self.p.map[key] |
|
305 | return self.p.map[key] | |
306 | except KeyError: |
|
306 | except KeyError: | |
307 | raise KeyError("node " + hex(key)) |
|
307 | raise KeyError("node " + hex(key)) | |
308 | def __setitem__(self, key, val): |
|
308 | def __setitem__(self, key, val): | |
309 | self.p.map[key] = val |
|
309 | self.p.map[key] = val | |
310 | def __delitem__(self, key): |
|
310 | def __delitem__(self, key): | |
311 | del self.p.map[key] |
|
311 | del self.p.map[key] | |
312 |
|
312 | |||
313 | indexformatv0 = ">4l20s20s20s" |
|
313 | indexformatv0 = ">4l20s20s20s" | |
314 | v0shaoffset = 56 |
|
314 | v0shaoffset = 56 | |
315 |
|
315 | |||
316 | class revlogoldio(object): |
|
316 | class revlogoldio(object): | |
317 | def __init__(self): |
|
317 | def __init__(self): | |
318 | self.size = struct.calcsize(indexformatv0) |
|
318 | self.size = struct.calcsize(indexformatv0) | |
319 |
|
319 | |||
320 | def parseindex(self, fp, data, inline): |
|
320 | def parseindex(self, fp, data, inline): | |
321 | s = self.size |
|
321 | s = self.size | |
322 | index = [] |
|
322 | index = [] | |
323 | nodemap = {nullid: nullrev} |
|
323 | nodemap = {nullid: nullrev} | |
324 | n = off = 0 |
|
324 | n = off = 0 | |
325 |
if len(data) |
|
325 | if len(data) == _prereadsize: | |
326 | data += fp.read() # read the rest |
|
326 | data += fp.read() # read the rest | |
327 | l = len(data) |
|
327 | l = len(data) | |
328 | while off + s <= l: |
|
328 | while off + s <= l: | |
329 | cur = data[off:off + s] |
|
329 | cur = data[off:off + s] | |
330 | off += s |
|
330 | off += s | |
331 | e = _unpack(indexformatv0, cur) |
|
331 | e = _unpack(indexformatv0, cur) | |
332 | # transform to revlogv1 format |
|
332 | # transform to revlogv1 format | |
333 | e2 = (offset_type(e[0], 0), e[1], -1, e[2], e[3], |
|
333 | e2 = (offset_type(e[0], 0), e[1], -1, e[2], e[3], | |
334 | nodemap.get(e[4], nullrev), nodemap.get(e[5], nullrev), e[6]) |
|
334 | nodemap.get(e[4], nullrev), nodemap.get(e[5], nullrev), e[6]) | |
335 | index.append(e2) |
|
335 | index.append(e2) | |
336 | nodemap[e[6]] = n |
|
336 | nodemap[e[6]] = n | |
337 | n += 1 |
|
337 | n += 1 | |
338 |
|
338 | |||
339 | return index, nodemap, None |
|
339 | return index, nodemap, None | |
340 |
|
340 | |||
341 | def packentry(self, entry, node, version, rev): |
|
341 | def packentry(self, entry, node, version, rev): | |
342 | e2 = (getoffset(entry[0]), entry[1], entry[3], entry[4], |
|
342 | e2 = (getoffset(entry[0]), entry[1], entry[3], entry[4], | |
343 | node(entry[5]), node(entry[6]), entry[7]) |
|
343 | node(entry[5]), node(entry[6]), entry[7]) | |
344 | return _pack(indexformatv0, *e2) |
|
344 | return _pack(indexformatv0, *e2) | |
345 |
|
345 | |||
346 | # index ng: |
|
346 | # index ng: | |
347 | # 6 bytes offset |
|
347 | # 6 bytes offset | |
348 | # 2 bytes flags |
|
348 | # 2 bytes flags | |
349 | # 4 bytes compressed length |
|
349 | # 4 bytes compressed length | |
350 | # 4 bytes uncompressed length |
|
350 | # 4 bytes uncompressed length | |
351 | # 4 bytes: base rev |
|
351 | # 4 bytes: base rev | |
352 | # 4 bytes link rev |
|
352 | # 4 bytes link rev | |
353 | # 4 bytes parent 1 rev |
|
353 | # 4 bytes parent 1 rev | |
354 | # 4 bytes parent 2 rev |
|
354 | # 4 bytes parent 2 rev | |
355 | # 32 bytes: nodeid |
|
355 | # 32 bytes: nodeid | |
356 | indexformatng = ">Qiiiiii20s12x" |
|
356 | indexformatng = ">Qiiiiii20s12x" | |
357 | ngshaoffset = 32 |
|
357 | ngshaoffset = 32 | |
358 | versionformat = ">I" |
|
358 | versionformat = ">I" | |
359 |
|
359 | |||
360 | class revlogio(object): |
|
360 | class revlogio(object): | |
361 | def __init__(self): |
|
361 | def __init__(self): | |
362 | self.size = struct.calcsize(indexformatng) |
|
362 | self.size = struct.calcsize(indexformatng) | |
363 |
|
363 | |||
364 | def parseindex(self, fp, data, inline): |
|
364 | def parseindex(self, fp, data, inline): | |
365 | try: |
|
365 | if len(data) == _prereadsize: | |
366 | size = len(data) |
|
366 | if util.openhardlinks() and not inline: | |
367 | if size == _prereadsize: |
|
367 | # big index, let's parse it on demand | |
368 | size = util.fstat(fp).st_size |
|
368 | parser = lazyparser(fp, size) | |
369 | except AttributeError: |
|
369 | index = lazyindex(parser) | |
370 | size = 0 |
|
370 | nodemap = lazymap(parser) | |
371 |
|
371 | e = list(index[0]) | ||
372 | if util.openhardlinks() and not inline and size > _prereadsize: |
|
372 | type = gettype(e[0]) | |
373 | # big index, let's parse it on demand |
|
373 | e[0] = offset_type(0, type) | |
374 | parser = lazyparser(fp, size) |
|
374 | index[0] = e | |
375 | index = lazyindex(parser) |
|
375 | return index, nodemap, None | |
376 | nodemap = lazymap(parser) |
|
376 | else: | |
377 | e = list(index[0]) |
|
377 | data += fp.read() | |
378 | type = gettype(e[0]) |
|
|||
379 | e[0] = offset_type(0, type) |
|
|||
380 | index[0] = e |
|
|||
381 | return index, nodemap, None |
|
|||
382 |
|
378 | |||
383 | # call the C implementation to parse the index data |
|
379 | # call the C implementation to parse the index data | |
384 | index, nodemap, cache = parsers.parse_index(data, inline) |
|
380 | index, nodemap, cache = parsers.parse_index(data, inline) | |
385 | return index, nodemap, cache |
|
381 | return index, nodemap, cache | |
386 |
|
382 | |||
387 | def packentry(self, entry, node, version, rev): |
|
383 | def packentry(self, entry, node, version, rev): | |
388 | p = _pack(indexformatng, *entry) |
|
384 | p = _pack(indexformatng, *entry) | |
389 | if rev == 0: |
|
385 | if rev == 0: | |
390 | p = _pack(versionformat, version) + p[4:] |
|
386 | p = _pack(versionformat, version) + p[4:] | |
391 | return p |
|
387 | return p | |
392 |
|
388 | |||
393 | class revlog(object): |
|
389 | class revlog(object): | |
394 | """ |
|
390 | """ | |
395 | the underlying revision storage object |
|
391 | the underlying revision storage object | |
396 |
|
392 | |||
397 | A revlog consists of two parts, an index and the revision data. |
|
393 | A revlog consists of two parts, an index and the revision data. | |
398 |
|
394 | |||
399 | The index is a file with a fixed record size containing |
|
395 | The index is a file with a fixed record size containing | |
400 | information on each revision, including its nodeid (hash), the |
|
396 | information on each revision, including its nodeid (hash), the | |
401 | nodeids of its parents, the position and offset of its data within |
|
397 | nodeids of its parents, the position and offset of its data within | |
402 | the data file, and the revision it's based on. Finally, each entry |
|
398 | the data file, and the revision it's based on. Finally, each entry | |
403 | contains a linkrev entry that can serve as a pointer to external |
|
399 | contains a linkrev entry that can serve as a pointer to external | |
404 | data. |
|
400 | data. | |
405 |
|
401 | |||
406 | The revision data itself is a linear collection of data chunks. |
|
402 | The revision data itself is a linear collection of data chunks. | |
407 | Each chunk represents a revision and is usually represented as a |
|
403 | Each chunk represents a revision and is usually represented as a | |
408 | delta against the previous chunk. To bound lookup time, runs of |
|
404 | delta against the previous chunk. To bound lookup time, runs of | |
409 | deltas are limited to about 2 times the length of the original |
|
405 | deltas are limited to about 2 times the length of the original | |
410 | version data. This makes retrieval of a version proportional to |
|
406 | version data. This makes retrieval of a version proportional to | |
411 | its size, or O(1) relative to the number of revisions. |
|
407 | its size, or O(1) relative to the number of revisions. | |
412 |
|
408 | |||
413 | Both pieces of the revlog are written to in an append-only |
|
409 | Both pieces of the revlog are written to in an append-only | |
414 | fashion, which means we never need to rewrite a file to insert or |
|
410 | fashion, which means we never need to rewrite a file to insert or | |
415 | remove data, and can use some simple techniques to avoid the need |
|
411 | remove data, and can use some simple techniques to avoid the need | |
416 | for locking while reading. |
|
412 | for locking while reading. | |
417 | """ |
|
413 | """ | |
418 | def __init__(self, opener, indexfile): |
|
414 | def __init__(self, opener, indexfile): | |
419 | """ |
|
415 | """ | |
420 | create a revlog object |
|
416 | create a revlog object | |
421 |
|
417 | |||
422 | opener is a function that abstracts the file opening operation |
|
418 | opener is a function that abstracts the file opening operation | |
423 | and can be used to implement COW semantics or the like. |
|
419 | and can be used to implement COW semantics or the like. | |
424 | """ |
|
420 | """ | |
425 | self.indexfile = indexfile |
|
421 | self.indexfile = indexfile | |
426 | self.datafile = indexfile[:-2] + ".d" |
|
422 | self.datafile = indexfile[:-2] + ".d" | |
427 | self.opener = opener |
|
423 | self.opener = opener | |
428 | self._cache = None |
|
424 | self._cache = None | |
429 | self._chunkcache = (0, '') |
|
425 | self._chunkcache = (0, '') | |
430 | self.nodemap = {nullid: nullrev} |
|
426 | self.nodemap = {nullid: nullrev} | |
431 | self.index = [] |
|
427 | self.index = [] | |
432 |
|
428 | |||
433 | v = REVLOG_DEFAULT_VERSION |
|
429 | v = REVLOG_DEFAULT_VERSION | |
434 | if hasattr(opener, "defversion"): |
|
430 | if hasattr(opener, "defversion"): | |
435 | v = opener.defversion |
|
431 | v = opener.defversion | |
436 | if v & REVLOGNG: |
|
432 | if v & REVLOGNG: | |
437 | v |= REVLOGNGINLINEDATA |
|
433 | v |= REVLOGNGINLINEDATA | |
438 |
|
434 | |||
439 | i = '' |
|
435 | i = '' | |
440 | try: |
|
436 | try: | |
441 | f = self.opener(self.indexfile) |
|
437 | f = self.opener(self.indexfile) | |
442 | i = f.read(_prereadsize) |
|
438 | i = f.read(_prereadsize) | |
443 | if len(i) > 0: |
|
439 | if len(i) > 0: | |
444 | v = struct.unpack(versionformat, i[:4])[0] |
|
440 | v = struct.unpack(versionformat, i[:4])[0] | |
445 | except IOError, inst: |
|
441 | except IOError, inst: | |
446 | if inst.errno != errno.ENOENT: |
|
442 | if inst.errno != errno.ENOENT: | |
447 | raise |
|
443 | raise | |
448 |
|
444 | |||
449 | self.version = v |
|
445 | self.version = v | |
450 | self._inline = v & REVLOGNGINLINEDATA |
|
446 | self._inline = v & REVLOGNGINLINEDATA | |
451 | flags = v & ~0xFFFF |
|
447 | flags = v & ~0xFFFF | |
452 | fmt = v & 0xFFFF |
|
448 | fmt = v & 0xFFFF | |
453 | if fmt == REVLOGV0 and flags: |
|
449 | if fmt == REVLOGV0 and flags: | |
454 | raise RevlogError(_("index %s unknown flags %#04x for format v0") |
|
450 | raise RevlogError(_("index %s unknown flags %#04x for format v0") | |
455 | % (self.indexfile, flags >> 16)) |
|
451 | % (self.indexfile, flags >> 16)) | |
456 | elif fmt == REVLOGNG and flags & ~REVLOGNGINLINEDATA: |
|
452 | elif fmt == REVLOGNG and flags & ~REVLOGNGINLINEDATA: | |
457 | raise RevlogError(_("index %s unknown flags %#04x for revlogng") |
|
453 | raise RevlogError(_("index %s unknown flags %#04x for revlogng") | |
458 | % (self.indexfile, flags >> 16)) |
|
454 | % (self.indexfile, flags >> 16)) | |
459 | elif fmt > REVLOGNG: |
|
455 | elif fmt > REVLOGNG: | |
460 | raise RevlogError(_("index %s unknown format %d") |
|
456 | raise RevlogError(_("index %s unknown format %d") | |
461 | % (self.indexfile, fmt)) |
|
457 | % (self.indexfile, fmt)) | |
462 |
|
458 | |||
463 | self._io = revlogio() |
|
459 | self._io = revlogio() | |
464 | if self.version == REVLOGV0: |
|
460 | if self.version == REVLOGV0: | |
465 | self._io = revlogoldio() |
|
461 | self._io = revlogoldio() | |
466 | if i: |
|
462 | if i: | |
467 | try: |
|
463 | try: | |
468 | d = self._io.parseindex(f, i, self._inline) |
|
464 | d = self._io.parseindex(f, i, self._inline) | |
469 | except (ValueError, IndexError), e: |
|
465 | except (ValueError, IndexError), e: | |
470 | raise RevlogError(_("index %s is corrupted") % (self.indexfile)) |
|
466 | raise RevlogError(_("index %s is corrupted") % (self.indexfile)) | |
471 | self.index, self.nodemap, self._chunkcache = d |
|
467 | self.index, self.nodemap, self._chunkcache = d | |
472 | if not self._chunkcache: |
|
468 | if not self._chunkcache: | |
473 | self._chunkcache = (0, '') |
|
469 | self._chunkcache = (0, '') | |
474 |
|
470 | |||
475 | # add the magic null revision at -1 (if it hasn't been done already) |
|
471 | # add the magic null revision at -1 (if it hasn't been done already) | |
476 | if (self.index == [] or isinstance(self.index, lazyindex) or |
|
472 | if (self.index == [] or isinstance(self.index, lazyindex) or | |
477 | self.index[-1][7] != nullid) : |
|
473 | self.index[-1][7] != nullid) : | |
478 | self.index.append((0, 0, 0, -1, -1, -1, -1, nullid)) |
|
474 | self.index.append((0, 0, 0, -1, -1, -1, -1, nullid)) | |
479 |
|
475 | |||
480 | def _loadindex(self, start, end): |
|
476 | def _loadindex(self, start, end): | |
481 | """load a block of indexes all at once from the lazy parser""" |
|
477 | """load a block of indexes all at once from the lazy parser""" | |
482 | if isinstance(self.index, lazyindex): |
|
478 | if isinstance(self.index, lazyindex): | |
483 | self.index.p.loadindex(start, end) |
|
479 | self.index.p.loadindex(start, end) | |
484 |
|
480 | |||
485 | def _loadindexmap(self): |
|
481 | def _loadindexmap(self): | |
486 | """loads both the map and the index from the lazy parser""" |
|
482 | """loads both the map and the index from the lazy parser""" | |
487 | if isinstance(self.index, lazyindex): |
|
483 | if isinstance(self.index, lazyindex): | |
488 | p = self.index.p |
|
484 | p = self.index.p | |
489 | p.loadindex() |
|
485 | p.loadindex() | |
490 | self.nodemap = p.map |
|
486 | self.nodemap = p.map | |
491 |
|
487 | |||
492 | def _loadmap(self): |
|
488 | def _loadmap(self): | |
493 | """loads the map from the lazy parser""" |
|
489 | """loads the map from the lazy parser""" | |
494 | if isinstance(self.nodemap, lazymap): |
|
490 | if isinstance(self.nodemap, lazymap): | |
495 | self.nodemap.p.loadmap() |
|
491 | self.nodemap.p.loadmap() | |
496 | self.nodemap = self.nodemap.p.map |
|
492 | self.nodemap = self.nodemap.p.map | |
497 |
|
493 | |||
498 | def tip(self): |
|
494 | def tip(self): | |
499 | return self.node(len(self.index) - 2) |
|
495 | return self.node(len(self.index) - 2) | |
500 | def __len__(self): |
|
496 | def __len__(self): | |
501 | return len(self.index) - 1 |
|
497 | return len(self.index) - 1 | |
502 | def __iter__(self): |
|
498 | def __iter__(self): | |
503 | for i in xrange(len(self)): |
|
499 | for i in xrange(len(self)): | |
504 | yield i |
|
500 | yield i | |
505 | def rev(self, node): |
|
501 | def rev(self, node): | |
506 | try: |
|
502 | try: | |
507 | return self.nodemap[node] |
|
503 | return self.nodemap[node] | |
508 | except KeyError: |
|
504 | except KeyError: | |
509 | raise LookupError(node, self.indexfile, _('no node')) |
|
505 | raise LookupError(node, self.indexfile, _('no node')) | |
510 | def node(self, rev): |
|
506 | def node(self, rev): | |
511 | return self.index[rev][7] |
|
507 | return self.index[rev][7] | |
512 | def linkrev(self, rev): |
|
508 | def linkrev(self, rev): | |
513 | return self.index[rev][4] |
|
509 | return self.index[rev][4] | |
514 | def parents(self, node): |
|
510 | def parents(self, node): | |
515 | i = self.index |
|
511 | i = self.index | |
516 | d = i[self.rev(node)] |
|
512 | d = i[self.rev(node)] | |
517 | return i[d[5]][7], i[d[6]][7] # map revisions to nodes inline |
|
513 | return i[d[5]][7], i[d[6]][7] # map revisions to nodes inline | |
518 | def parentrevs(self, rev): |
|
514 | def parentrevs(self, rev): | |
519 | return self.index[rev][5:7] |
|
515 | return self.index[rev][5:7] | |
520 | def start(self, rev): |
|
516 | def start(self, rev): | |
521 | return int(self.index[rev][0] >> 16) |
|
517 | return int(self.index[rev][0] >> 16) | |
522 | def end(self, rev): |
|
518 | def end(self, rev): | |
523 | return self.start(rev) + self.length(rev) |
|
519 | return self.start(rev) + self.length(rev) | |
524 | def length(self, rev): |
|
520 | def length(self, rev): | |
525 | return self.index[rev][1] |
|
521 | return self.index[rev][1] | |
526 | def base(self, rev): |
|
522 | def base(self, rev): | |
527 | return self.index[rev][3] |
|
523 | return self.index[rev][3] | |
528 |
|
524 | |||
529 | def size(self, rev): |
|
525 | def size(self, rev): | |
530 | """return the length of the uncompressed text for a given revision""" |
|
526 | """return the length of the uncompressed text for a given revision""" | |
531 | l = self.index[rev][2] |
|
527 | l = self.index[rev][2] | |
532 | if l >= 0: |
|
528 | if l >= 0: | |
533 | return l |
|
529 | return l | |
534 |
|
530 | |||
535 | t = self.revision(self.node(rev)) |
|
531 | t = self.revision(self.node(rev)) | |
536 | return len(t) |
|
532 | return len(t) | |
537 |
|
533 | |||
538 | # alternate implementation, The advantage to this code is it |
|
534 | # alternate implementation, The advantage to this code is it | |
539 | # will be faster for a single revision. But, the results are not |
|
535 | # will be faster for a single revision. But, the results are not | |
540 | # cached, so finding the size of every revision will be slower. |
|
536 | # cached, so finding the size of every revision will be slower. | |
541 | """ |
|
537 | """ | |
542 | if self.cache and self.cache[1] == rev: |
|
538 | if self.cache and self.cache[1] == rev: | |
543 | return len(self.cache[2]) |
|
539 | return len(self.cache[2]) | |
544 |
|
540 | |||
545 | base = self.base(rev) |
|
541 | base = self.base(rev) | |
546 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
|
542 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: | |
547 | base = self.cache[1] |
|
543 | base = self.cache[1] | |
548 | text = self.cache[2] |
|
544 | text = self.cache[2] | |
549 | else: |
|
545 | else: | |
550 | text = self.revision(self.node(base)) |
|
546 | text = self.revision(self.node(base)) | |
551 |
|
547 | |||
552 | l = len(text) |
|
548 | l = len(text) | |
553 | for x in xrange(base + 1, rev + 1): |
|
549 | for x in xrange(base + 1, rev + 1): | |
554 | l = mdiff.patchedsize(l, self.chunk(x)) |
|
550 | l = mdiff.patchedsize(l, self.chunk(x)) | |
555 | return l |
|
551 | return l | |
556 | """ |
|
552 | """ | |
557 |
|
553 | |||
558 | def reachable(self, node, stop=None): |
|
554 | def reachable(self, node, stop=None): | |
559 | """return the set of all nodes ancestral to a given node, including |
|
555 | """return the set of all nodes ancestral to a given node, including | |
560 | the node itself, stopping when stop is matched""" |
|
556 | the node itself, stopping when stop is matched""" | |
561 | reachable = set((node,)) |
|
557 | reachable = set((node,)) | |
562 | visit = [node] |
|
558 | visit = [node] | |
563 | if stop: |
|
559 | if stop: | |
564 | stopn = self.rev(stop) |
|
560 | stopn = self.rev(stop) | |
565 | else: |
|
561 | else: | |
566 | stopn = 0 |
|
562 | stopn = 0 | |
567 | while visit: |
|
563 | while visit: | |
568 | n = visit.pop(0) |
|
564 | n = visit.pop(0) | |
569 | if n == stop: |
|
565 | if n == stop: | |
570 | continue |
|
566 | continue | |
571 | if n == nullid: |
|
567 | if n == nullid: | |
572 | continue |
|
568 | continue | |
573 | for p in self.parents(n): |
|
569 | for p in self.parents(n): | |
574 | if self.rev(p) < stopn: |
|
570 | if self.rev(p) < stopn: | |
575 | continue |
|
571 | continue | |
576 | if p not in reachable: |
|
572 | if p not in reachable: | |
577 | reachable.add(p) |
|
573 | reachable.add(p) | |
578 | visit.append(p) |
|
574 | visit.append(p) | |
579 | return reachable |
|
575 | return reachable | |
580 |
|
576 | |||
581 | def ancestors(self, *revs): |
|
577 | def ancestors(self, *revs): | |
582 | 'Generate the ancestors of revs using a breadth-first visit' |
|
578 | 'Generate the ancestors of revs using a breadth-first visit' | |
583 | visit = list(revs) |
|
579 | visit = list(revs) | |
584 | seen = set([nullrev]) |
|
580 | seen = set([nullrev]) | |
585 | while visit: |
|
581 | while visit: | |
586 | for parent in self.parentrevs(visit.pop(0)): |
|
582 | for parent in self.parentrevs(visit.pop(0)): | |
587 | if parent not in seen: |
|
583 | if parent not in seen: | |
588 | visit.append(parent) |
|
584 | visit.append(parent) | |
589 | seen.add(parent) |
|
585 | seen.add(parent) | |
590 | yield parent |
|
586 | yield parent | |
591 |
|
587 | |||
592 | def descendants(self, *revs): |
|
588 | def descendants(self, *revs): | |
593 | 'Generate the descendants of revs in topological order' |
|
589 | 'Generate the descendants of revs in topological order' | |
594 | seen = set(revs) |
|
590 | seen = set(revs) | |
595 | for i in xrange(min(revs) + 1, len(self)): |
|
591 | for i in xrange(min(revs) + 1, len(self)): | |
596 | for x in self.parentrevs(i): |
|
592 | for x in self.parentrevs(i): | |
597 | if x != nullrev and x in seen: |
|
593 | if x != nullrev and x in seen: | |
598 | seen.add(i) |
|
594 | seen.add(i) | |
599 | yield i |
|
595 | yield i | |
600 | break |
|
596 | break | |
601 |
|
597 | |||
602 | def findmissing(self, common=None, heads=None): |
|
598 | def findmissing(self, common=None, heads=None): | |
603 | ''' |
|
599 | ''' | |
604 | returns the topologically sorted list of nodes from the set: |
|
600 | returns the topologically sorted list of nodes from the set: | |
605 | missing = (ancestors(heads) \ ancestors(common)) |
|
601 | missing = (ancestors(heads) \ ancestors(common)) | |
606 |
|
602 | |||
607 | where ancestors() is the set of ancestors from heads, heads included |
|
603 | where ancestors() is the set of ancestors from heads, heads included | |
608 |
|
604 | |||
609 | if heads is None, the heads of the revlog are used |
|
605 | if heads is None, the heads of the revlog are used | |
610 | if common is None, nullid is assumed to be a common node |
|
606 | if common is None, nullid is assumed to be a common node | |
611 | ''' |
|
607 | ''' | |
612 | if common is None: |
|
608 | if common is None: | |
613 | common = [nullid] |
|
609 | common = [nullid] | |
614 | if heads is None: |
|
610 | if heads is None: | |
615 | heads = self.heads() |
|
611 | heads = self.heads() | |
616 |
|
612 | |||
617 | common = [self.rev(n) for n in common] |
|
613 | common = [self.rev(n) for n in common] | |
618 | heads = [self.rev(n) for n in heads] |
|
614 | heads = [self.rev(n) for n in heads] | |
619 |
|
615 | |||
620 | # we want the ancestors, but inclusive |
|
616 | # we want the ancestors, but inclusive | |
621 | has = set(self.ancestors(*common)) |
|
617 | has = set(self.ancestors(*common)) | |
622 | has.add(nullrev) |
|
618 | has.add(nullrev) | |
623 | has.update(common) |
|
619 | has.update(common) | |
624 |
|
620 | |||
625 | # take all ancestors from heads that aren't in has |
|
621 | # take all ancestors from heads that aren't in has | |
626 | missing = set() |
|
622 | missing = set() | |
627 | visit = [r for r in heads if r not in has] |
|
623 | visit = [r for r in heads if r not in has] | |
628 | while visit: |
|
624 | while visit: | |
629 | r = visit.pop(0) |
|
625 | r = visit.pop(0) | |
630 | if r in missing: |
|
626 | if r in missing: | |
631 | continue |
|
627 | continue | |
632 | else: |
|
628 | else: | |
633 | missing.add(r) |
|
629 | missing.add(r) | |
634 | for p in self.parentrevs(r): |
|
630 | for p in self.parentrevs(r): | |
635 | if p not in has: |
|
631 | if p not in has: | |
636 | visit.append(p) |
|
632 | visit.append(p) | |
637 | missing = list(missing) |
|
633 | missing = list(missing) | |
638 | missing.sort() |
|
634 | missing.sort() | |
639 | return [self.node(r) for r in missing] |
|
635 | return [self.node(r) for r in missing] | |
640 |
|
636 | |||
641 | def nodesbetween(self, roots=None, heads=None): |
|
637 | def nodesbetween(self, roots=None, heads=None): | |
642 | """Return a tuple containing three elements. Elements 1 and 2 contain |
|
638 | """Return a tuple containing three elements. Elements 1 and 2 contain | |
643 | a final list bases and heads after all the unreachable ones have been |
|
639 | a final list bases and heads after all the unreachable ones have been | |
644 | pruned. Element 0 contains a topologically sorted list of all |
|
640 | pruned. Element 0 contains a topologically sorted list of all | |
645 |
|
641 | |||
646 | nodes that satisfy these constraints: |
|
642 | nodes that satisfy these constraints: | |
647 | 1. All nodes must be descended from a node in roots (the nodes on |
|
643 | 1. All nodes must be descended from a node in roots (the nodes on | |
648 | roots are considered descended from themselves). |
|
644 | roots are considered descended from themselves). | |
649 | 2. All nodes must also be ancestors of a node in heads (the nodes in |
|
645 | 2. All nodes must also be ancestors of a node in heads (the nodes in | |
650 | heads are considered to be their own ancestors). |
|
646 | heads are considered to be their own ancestors). | |
651 |
|
647 | |||
652 | If roots is unspecified, nullid is assumed as the only root. |
|
648 | If roots is unspecified, nullid is assumed as the only root. | |
653 | If heads is unspecified, it is taken to be the output of the |
|
649 | If heads is unspecified, it is taken to be the output of the | |
654 | heads method (i.e. a list of all nodes in the repository that |
|
650 | heads method (i.e. a list of all nodes in the repository that | |
655 | have no children).""" |
|
651 | have no children).""" | |
656 | nonodes = ([], [], []) |
|
652 | nonodes = ([], [], []) | |
657 | if roots is not None: |
|
653 | if roots is not None: | |
658 | roots = list(roots) |
|
654 | roots = list(roots) | |
659 | if not roots: |
|
655 | if not roots: | |
660 | return nonodes |
|
656 | return nonodes | |
661 | lowestrev = min([self.rev(n) for n in roots]) |
|
657 | lowestrev = min([self.rev(n) for n in roots]) | |
662 | else: |
|
658 | else: | |
663 | roots = [nullid] # Everybody's a descendent of nullid |
|
659 | roots = [nullid] # Everybody's a descendent of nullid | |
664 | lowestrev = nullrev |
|
660 | lowestrev = nullrev | |
665 | if (lowestrev == nullrev) and (heads is None): |
|
661 | if (lowestrev == nullrev) and (heads is None): | |
666 | # We want _all_ the nodes! |
|
662 | # We want _all_ the nodes! | |
667 | return ([self.node(r) for r in self], [nullid], list(self.heads())) |
|
663 | return ([self.node(r) for r in self], [nullid], list(self.heads())) | |
668 | if heads is None: |
|
664 | if heads is None: | |
669 | # All nodes are ancestors, so the latest ancestor is the last |
|
665 | # All nodes are ancestors, so the latest ancestor is the last | |
670 | # node. |
|
666 | # node. | |
671 | highestrev = len(self) - 1 |
|
667 | highestrev = len(self) - 1 | |
672 | # Set ancestors to None to signal that every node is an ancestor. |
|
668 | # Set ancestors to None to signal that every node is an ancestor. | |
673 | ancestors = None |
|
669 | ancestors = None | |
674 | # Set heads to an empty dictionary for later discovery of heads |
|
670 | # Set heads to an empty dictionary for later discovery of heads | |
675 | heads = {} |
|
671 | heads = {} | |
676 | else: |
|
672 | else: | |
677 | heads = list(heads) |
|
673 | heads = list(heads) | |
678 | if not heads: |
|
674 | if not heads: | |
679 | return nonodes |
|
675 | return nonodes | |
680 | ancestors = set() |
|
676 | ancestors = set() | |
681 | # Turn heads into a dictionary so we can remove 'fake' heads. |
|
677 | # Turn heads into a dictionary so we can remove 'fake' heads. | |
682 | # Also, later we will be using it to filter out the heads we can't |
|
678 | # Also, later we will be using it to filter out the heads we can't | |
683 | # find from roots. |
|
679 | # find from roots. | |
684 | heads = dict.fromkeys(heads, 0) |
|
680 | heads = dict.fromkeys(heads, 0) | |
685 | # Start at the top and keep marking parents until we're done. |
|
681 | # Start at the top and keep marking parents until we're done. | |
686 | nodestotag = set(heads) |
|
682 | nodestotag = set(heads) | |
687 | # Remember where the top was so we can use it as a limit later. |
|
683 | # Remember where the top was so we can use it as a limit later. | |
688 | highestrev = max([self.rev(n) for n in nodestotag]) |
|
684 | highestrev = max([self.rev(n) for n in nodestotag]) | |
689 | while nodestotag: |
|
685 | while nodestotag: | |
690 | # grab a node to tag |
|
686 | # grab a node to tag | |
691 | n = nodestotag.pop() |
|
687 | n = nodestotag.pop() | |
692 | # Never tag nullid |
|
688 | # Never tag nullid | |
693 | if n == nullid: |
|
689 | if n == nullid: | |
694 | continue |
|
690 | continue | |
695 | # A node's revision number represents its place in a |
|
691 | # A node's revision number represents its place in a | |
696 | # topologically sorted list of nodes. |
|
692 | # topologically sorted list of nodes. | |
697 | r = self.rev(n) |
|
693 | r = self.rev(n) | |
698 | if r >= lowestrev: |
|
694 | if r >= lowestrev: | |
699 | if n not in ancestors: |
|
695 | if n not in ancestors: | |
700 | # If we are possibly a descendent of one of the roots |
|
696 | # If we are possibly a descendent of one of the roots | |
701 | # and we haven't already been marked as an ancestor |
|
697 | # and we haven't already been marked as an ancestor | |
702 | ancestors.add(n) # Mark as ancestor |
|
698 | ancestors.add(n) # Mark as ancestor | |
703 | # Add non-nullid parents to list of nodes to tag. |
|
699 | # Add non-nullid parents to list of nodes to tag. | |
704 | nodestotag.update([p for p in self.parents(n) if |
|
700 | nodestotag.update([p for p in self.parents(n) if | |
705 | p != nullid]) |
|
701 | p != nullid]) | |
706 | elif n in heads: # We've seen it before, is it a fake head? |
|
702 | elif n in heads: # We've seen it before, is it a fake head? | |
707 | # So it is, real heads should not be the ancestors of |
|
703 | # So it is, real heads should not be the ancestors of | |
708 | # any other heads. |
|
704 | # any other heads. | |
709 | heads.pop(n) |
|
705 | heads.pop(n) | |
710 | if not ancestors: |
|
706 | if not ancestors: | |
711 | return nonodes |
|
707 | return nonodes | |
712 | # Now that we have our set of ancestors, we want to remove any |
|
708 | # Now that we have our set of ancestors, we want to remove any | |
713 | # roots that are not ancestors. |
|
709 | # roots that are not ancestors. | |
714 |
|
710 | |||
715 | # If one of the roots was nullid, everything is included anyway. |
|
711 | # If one of the roots was nullid, everything is included anyway. | |
716 | if lowestrev > nullrev: |
|
712 | if lowestrev > nullrev: | |
717 | # But, since we weren't, let's recompute the lowest rev to not |
|
713 | # But, since we weren't, let's recompute the lowest rev to not | |
718 | # include roots that aren't ancestors. |
|
714 | # include roots that aren't ancestors. | |
719 |
|
715 | |||
720 | # Filter out roots that aren't ancestors of heads |
|
716 | # Filter out roots that aren't ancestors of heads | |
721 | roots = [n for n in roots if n in ancestors] |
|
717 | roots = [n for n in roots if n in ancestors] | |
722 | # Recompute the lowest revision |
|
718 | # Recompute the lowest revision | |
723 | if roots: |
|
719 | if roots: | |
724 | lowestrev = min([self.rev(n) for n in roots]) |
|
720 | lowestrev = min([self.rev(n) for n in roots]) | |
725 | else: |
|
721 | else: | |
726 | # No more roots? Return empty list |
|
722 | # No more roots? Return empty list | |
727 | return nonodes |
|
723 | return nonodes | |
728 | else: |
|
724 | else: | |
729 | # We are descending from nullid, and don't need to care about |
|
725 | # We are descending from nullid, and don't need to care about | |
730 | # any other roots. |
|
726 | # any other roots. | |
731 | lowestrev = nullrev |
|
727 | lowestrev = nullrev | |
732 | roots = [nullid] |
|
728 | roots = [nullid] | |
733 | # Transform our roots list into a set. |
|
729 | # Transform our roots list into a set. | |
734 | descendents = set(roots) |
|
730 | descendents = set(roots) | |
735 | # Also, keep the original roots so we can filter out roots that aren't |
|
731 | # Also, keep the original roots so we can filter out roots that aren't | |
736 | # 'real' roots (i.e. are descended from other roots). |
|
732 | # 'real' roots (i.e. are descended from other roots). | |
737 | roots = descendents.copy() |
|
733 | roots = descendents.copy() | |
738 | # Our topologically sorted list of output nodes. |
|
734 | # Our topologically sorted list of output nodes. | |
739 | orderedout = [] |
|
735 | orderedout = [] | |
740 | # Don't start at nullid since we don't want nullid in our output list, |
|
736 | # Don't start at nullid since we don't want nullid in our output list, | |
741 | # and if nullid shows up in descedents, empty parents will look like |
|
737 | # and if nullid shows up in descedents, empty parents will look like | |
742 | # they're descendents. |
|
738 | # they're descendents. | |
743 | for r in xrange(max(lowestrev, 0), highestrev + 1): |
|
739 | for r in xrange(max(lowestrev, 0), highestrev + 1): | |
744 | n = self.node(r) |
|
740 | n = self.node(r) | |
745 | isdescendent = False |
|
741 | isdescendent = False | |
746 | if lowestrev == nullrev: # Everybody is a descendent of nullid |
|
742 | if lowestrev == nullrev: # Everybody is a descendent of nullid | |
747 | isdescendent = True |
|
743 | isdescendent = True | |
748 | elif n in descendents: |
|
744 | elif n in descendents: | |
749 | # n is already a descendent |
|
745 | # n is already a descendent | |
750 | isdescendent = True |
|
746 | isdescendent = True | |
751 | # This check only needs to be done here because all the roots |
|
747 | # This check only needs to be done here because all the roots | |
752 | # will start being marked is descendents before the loop. |
|
748 | # will start being marked is descendents before the loop. | |
753 | if n in roots: |
|
749 | if n in roots: | |
754 | # If n was a root, check if it's a 'real' root. |
|
750 | # If n was a root, check if it's a 'real' root. | |
755 | p = tuple(self.parents(n)) |
|
751 | p = tuple(self.parents(n)) | |
756 | # If any of its parents are descendents, it's not a root. |
|
752 | # If any of its parents are descendents, it's not a root. | |
757 | if (p[0] in descendents) or (p[1] in descendents): |
|
753 | if (p[0] in descendents) or (p[1] in descendents): | |
758 | roots.remove(n) |
|
754 | roots.remove(n) | |
759 | else: |
|
755 | else: | |
760 | p = tuple(self.parents(n)) |
|
756 | p = tuple(self.parents(n)) | |
761 | # A node is a descendent if either of its parents are |
|
757 | # A node is a descendent if either of its parents are | |
762 | # descendents. (We seeded the dependents list with the roots |
|
758 | # descendents. (We seeded the dependents list with the roots | |
763 | # up there, remember?) |
|
759 | # up there, remember?) | |
764 | if (p[0] in descendents) or (p[1] in descendents): |
|
760 | if (p[0] in descendents) or (p[1] in descendents): | |
765 | descendents.add(n) |
|
761 | descendents.add(n) | |
766 | isdescendent = True |
|
762 | isdescendent = True | |
767 | if isdescendent and ((ancestors is None) or (n in ancestors)): |
|
763 | if isdescendent and ((ancestors is None) or (n in ancestors)): | |
768 | # Only include nodes that are both descendents and ancestors. |
|
764 | # Only include nodes that are both descendents and ancestors. | |
769 | orderedout.append(n) |
|
765 | orderedout.append(n) | |
770 | if (ancestors is not None) and (n in heads): |
|
766 | if (ancestors is not None) and (n in heads): | |
771 | # We're trying to figure out which heads are reachable |
|
767 | # We're trying to figure out which heads are reachable | |
772 | # from roots. |
|
768 | # from roots. | |
773 | # Mark this head as having been reached |
|
769 | # Mark this head as having been reached | |
774 | heads[n] = 1 |
|
770 | heads[n] = 1 | |
775 | elif ancestors is None: |
|
771 | elif ancestors is None: | |
776 | # Otherwise, we're trying to discover the heads. |
|
772 | # Otherwise, we're trying to discover the heads. | |
777 | # Assume this is a head because if it isn't, the next step |
|
773 | # Assume this is a head because if it isn't, the next step | |
778 | # will eventually remove it. |
|
774 | # will eventually remove it. | |
779 | heads[n] = 1 |
|
775 | heads[n] = 1 | |
780 | # But, obviously its parents aren't. |
|
776 | # But, obviously its parents aren't. | |
781 | for p in self.parents(n): |
|
777 | for p in self.parents(n): | |
782 | heads.pop(p, None) |
|
778 | heads.pop(p, None) | |
783 | heads = [n for n in heads.iterkeys() if heads[n] != 0] |
|
779 | heads = [n for n in heads.iterkeys() if heads[n] != 0] | |
784 | roots = list(roots) |
|
780 | roots = list(roots) | |
785 | assert orderedout |
|
781 | assert orderedout | |
786 | assert roots |
|
782 | assert roots | |
787 | assert heads |
|
783 | assert heads | |
788 | return (orderedout, roots, heads) |
|
784 | return (orderedout, roots, heads) | |
789 |
|
785 | |||
790 | def heads(self, start=None, stop=None): |
|
786 | def heads(self, start=None, stop=None): | |
791 | """return the list of all nodes that have no children |
|
787 | """return the list of all nodes that have no children | |
792 |
|
788 | |||
793 | if start is specified, only heads that are descendants of |
|
789 | if start is specified, only heads that are descendants of | |
794 | start will be returned |
|
790 | start will be returned | |
795 | if stop is specified, it will consider all the revs from stop |
|
791 | if stop is specified, it will consider all the revs from stop | |
796 | as if they had no children |
|
792 | as if they had no children | |
797 | """ |
|
793 | """ | |
798 | if start is None and stop is None: |
|
794 | if start is None and stop is None: | |
799 | count = len(self) |
|
795 | count = len(self) | |
800 | if not count: |
|
796 | if not count: | |
801 | return [nullid] |
|
797 | return [nullid] | |
802 | ishead = [1] * (count + 1) |
|
798 | ishead = [1] * (count + 1) | |
803 | index = self.index |
|
799 | index = self.index | |
804 | for r in xrange(count): |
|
800 | for r in xrange(count): | |
805 | e = index[r] |
|
801 | e = index[r] | |
806 | ishead[e[5]] = ishead[e[6]] = 0 |
|
802 | ishead[e[5]] = ishead[e[6]] = 0 | |
807 | return [self.node(r) for r in xrange(count) if ishead[r]] |
|
803 | return [self.node(r) for r in xrange(count) if ishead[r]] | |
808 |
|
804 | |||
809 | if start is None: |
|
805 | if start is None: | |
810 | start = nullid |
|
806 | start = nullid | |
811 | if stop is None: |
|
807 | if stop is None: | |
812 | stop = [] |
|
808 | stop = [] | |
813 | stoprevs = set([self.rev(n) for n in stop]) |
|
809 | stoprevs = set([self.rev(n) for n in stop]) | |
814 | startrev = self.rev(start) |
|
810 | startrev = self.rev(start) | |
815 | reachable = set((startrev,)) |
|
811 | reachable = set((startrev,)) | |
816 | heads = set((startrev,)) |
|
812 | heads = set((startrev,)) | |
817 |
|
813 | |||
818 | parentrevs = self.parentrevs |
|
814 | parentrevs = self.parentrevs | |
819 | for r in xrange(startrev + 1, len(self)): |
|
815 | for r in xrange(startrev + 1, len(self)): | |
820 | for p in parentrevs(r): |
|
816 | for p in parentrevs(r): | |
821 | if p in reachable: |
|
817 | if p in reachable: | |
822 | if r not in stoprevs: |
|
818 | if r not in stoprevs: | |
823 | reachable.add(r) |
|
819 | reachable.add(r) | |
824 | heads.add(r) |
|
820 | heads.add(r) | |
825 | if p in heads and p not in stoprevs: |
|
821 | if p in heads and p not in stoprevs: | |
826 | heads.remove(p) |
|
822 | heads.remove(p) | |
827 |
|
823 | |||
828 | return [self.node(r) for r in heads] |
|
824 | return [self.node(r) for r in heads] | |
829 |
|
825 | |||
830 | def children(self, node): |
|
826 | def children(self, node): | |
831 | """find the children of a given node""" |
|
827 | """find the children of a given node""" | |
832 | c = [] |
|
828 | c = [] | |
833 | p = self.rev(node) |
|
829 | p = self.rev(node) | |
834 | for r in range(p + 1, len(self)): |
|
830 | for r in range(p + 1, len(self)): | |
835 | prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] |
|
831 | prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] | |
836 | if prevs: |
|
832 | if prevs: | |
837 | for pr in prevs: |
|
833 | for pr in prevs: | |
838 | if pr == p: |
|
834 | if pr == p: | |
839 | c.append(self.node(r)) |
|
835 | c.append(self.node(r)) | |
840 | elif p == nullrev: |
|
836 | elif p == nullrev: | |
841 | c.append(self.node(r)) |
|
837 | c.append(self.node(r)) | |
842 | return c |
|
838 | return c | |
843 |
|
839 | |||
844 | def _match(self, id): |
|
840 | def _match(self, id): | |
845 | if isinstance(id, (long, int)): |
|
841 | if isinstance(id, (long, int)): | |
846 | # rev |
|
842 | # rev | |
847 | return self.node(id) |
|
843 | return self.node(id) | |
848 | if len(id) == 20: |
|
844 | if len(id) == 20: | |
849 | # possibly a binary node |
|
845 | # possibly a binary node | |
850 | # odds of a binary node being all hex in ASCII are 1 in 10**25 |
|
846 | # odds of a binary node being all hex in ASCII are 1 in 10**25 | |
851 | try: |
|
847 | try: | |
852 | node = id |
|
848 | node = id | |
853 | self.rev(node) # quick search the index |
|
849 | self.rev(node) # quick search the index | |
854 | return node |
|
850 | return node | |
855 | except LookupError: |
|
851 | except LookupError: | |
856 | pass # may be partial hex id |
|
852 | pass # may be partial hex id | |
857 | try: |
|
853 | try: | |
858 | # str(rev) |
|
854 | # str(rev) | |
859 | rev = int(id) |
|
855 | rev = int(id) | |
860 | if str(rev) != id: |
|
856 | if str(rev) != id: | |
861 | raise ValueError |
|
857 | raise ValueError | |
862 | if rev < 0: |
|
858 | if rev < 0: | |
863 | rev = len(self) + rev |
|
859 | rev = len(self) + rev | |
864 | if rev < 0 or rev >= len(self): |
|
860 | if rev < 0 or rev >= len(self): | |
865 | raise ValueError |
|
861 | raise ValueError | |
866 | return self.node(rev) |
|
862 | return self.node(rev) | |
867 | except (ValueError, OverflowError): |
|
863 | except (ValueError, OverflowError): | |
868 | pass |
|
864 | pass | |
869 | if len(id) == 40: |
|
865 | if len(id) == 40: | |
870 | try: |
|
866 | try: | |
871 | # a full hex nodeid? |
|
867 | # a full hex nodeid? | |
872 | node = bin(id) |
|
868 | node = bin(id) | |
873 | self.rev(node) |
|
869 | self.rev(node) | |
874 | return node |
|
870 | return node | |
875 | except (TypeError, LookupError): |
|
871 | except (TypeError, LookupError): | |
876 | pass |
|
872 | pass | |
877 |
|
873 | |||
878 | def _partialmatch(self, id): |
|
874 | def _partialmatch(self, id): | |
879 | if len(id) < 40: |
|
875 | if len(id) < 40: | |
880 | try: |
|
876 | try: | |
881 | # hex(node)[:...] |
|
877 | # hex(node)[:...] | |
882 | l = len(id) / 2 # grab an even number of digits |
|
878 | l = len(id) / 2 # grab an even number of digits | |
883 | bin_id = bin(id[:l*2]) |
|
879 | bin_id = bin(id[:l*2]) | |
884 | nl = [n for n in self.nodemap if n[:l] == bin_id] |
|
880 | nl = [n for n in self.nodemap if n[:l] == bin_id] | |
885 | nl = [n for n in nl if hex(n).startswith(id)] |
|
881 | nl = [n for n in nl if hex(n).startswith(id)] | |
886 | if len(nl) > 0: |
|
882 | if len(nl) > 0: | |
887 | if len(nl) == 1: |
|
883 | if len(nl) == 1: | |
888 | return nl[0] |
|
884 | return nl[0] | |
889 | raise LookupError(id, self.indexfile, |
|
885 | raise LookupError(id, self.indexfile, | |
890 | _('ambiguous identifier')) |
|
886 | _('ambiguous identifier')) | |
891 | return None |
|
887 | return None | |
892 | except TypeError: |
|
888 | except TypeError: | |
893 | pass |
|
889 | pass | |
894 |
|
890 | |||
895 | def lookup(self, id): |
|
891 | def lookup(self, id): | |
896 | """locate a node based on: |
|
892 | """locate a node based on: | |
897 | - revision number or str(revision number) |
|
893 | - revision number or str(revision number) | |
898 | - nodeid or subset of hex nodeid |
|
894 | - nodeid or subset of hex nodeid | |
899 | """ |
|
895 | """ | |
900 | n = self._match(id) |
|
896 | n = self._match(id) | |
901 | if n is not None: |
|
897 | if n is not None: | |
902 | return n |
|
898 | return n | |
903 | n = self._partialmatch(id) |
|
899 | n = self._partialmatch(id) | |
904 | if n: |
|
900 | if n: | |
905 | return n |
|
901 | return n | |
906 |
|
902 | |||
907 | raise LookupError(id, self.indexfile, _('no match found')) |
|
903 | raise LookupError(id, self.indexfile, _('no match found')) | |
908 |
|
904 | |||
909 | def cmp(self, node, text): |
|
905 | def cmp(self, node, text): | |
910 | """compare text with a given file revision""" |
|
906 | """compare text with a given file revision""" | |
911 | p1, p2 = self.parents(node) |
|
907 | p1, p2 = self.parents(node) | |
912 | return hash(text, p1, p2) != node |
|
908 | return hash(text, p1, p2) != node | |
913 |
|
909 | |||
914 | def _addchunk(self, offset, data): |
|
910 | def _addchunk(self, offset, data): | |
915 | o, d = self._chunkcache |
|
911 | o, d = self._chunkcache | |
916 | # try to add to existing cache |
|
912 | # try to add to existing cache | |
917 | if o + len(d) == offset and len(d) + len(data) < _prereadsize: |
|
913 | if o + len(d) == offset and len(d) + len(data) < _prereadsize: | |
918 | self._chunkcache = o, d + data |
|
914 | self._chunkcache = o, d + data | |
919 | else: |
|
915 | else: | |
920 | self._chunkcache = offset, data |
|
916 | self._chunkcache = offset, data | |
921 |
|
917 | |||
922 | def _loadchunk(self, offset, length, df=None): |
|
918 | def _loadchunk(self, offset, length, df=None): | |
923 | if not df: |
|
919 | if not df: | |
924 | if self._inline: |
|
920 | if self._inline: | |
925 | df = self.opener(self.indexfile) |
|
921 | df = self.opener(self.indexfile) | |
926 | else: |
|
922 | else: | |
927 | df = self.opener(self.datafile) |
|
923 | df = self.opener(self.datafile) | |
928 |
|
924 | |||
929 | readahead = max(65536, length) |
|
925 | readahead = max(65536, length) | |
930 | df.seek(offset) |
|
926 | df.seek(offset) | |
931 | d = df.read(readahead) |
|
927 | d = df.read(readahead) | |
932 | self._addchunk(offset, d) |
|
928 | self._addchunk(offset, d) | |
933 | if readahead > length: |
|
929 | if readahead > length: | |
934 | return d[:length] |
|
930 | return d[:length] | |
935 | return d |
|
931 | return d | |
936 |
|
932 | |||
937 | def _getchunk(self, offset, length, df=None): |
|
933 | def _getchunk(self, offset, length, df=None): | |
938 | o, d = self._chunkcache |
|
934 | o, d = self._chunkcache | |
939 | l = len(d) |
|
935 | l = len(d) | |
940 |
|
936 | |||
941 | # is it in the cache? |
|
937 | # is it in the cache? | |
942 | cachestart = offset - o |
|
938 | cachestart = offset - o | |
943 | cacheend = cachestart + length |
|
939 | cacheend = cachestart + length | |
944 | if cachestart >= 0 and cacheend <= l: |
|
940 | if cachestart >= 0 and cacheend <= l: | |
945 | if cachestart == 0 and cacheend == l: |
|
941 | if cachestart == 0 and cacheend == l: | |
946 | return d # avoid a copy |
|
942 | return d # avoid a copy | |
947 | return d[cachestart:cacheend] |
|
943 | return d[cachestart:cacheend] | |
948 |
|
944 | |||
949 | return self._loadchunk(offset, length, df) |
|
945 | return self._loadchunk(offset, length, df) | |
950 |
|
946 | |||
951 | def _prime(self, startrev, endrev, df): |
|
947 | def _prime(self, startrev, endrev, df): | |
952 | start = self.start(startrev) |
|
948 | start = self.start(startrev) | |
953 | end = self.end(endrev) |
|
949 | end = self.end(endrev) | |
954 | if self._inline: |
|
950 | if self._inline: | |
955 | start += (startrev + 1) * self._io.size |
|
951 | start += (startrev + 1) * self._io.size | |
956 | end += (startrev + 1) * self._io.size |
|
952 | end += (startrev + 1) * self._io.size | |
957 | self._loadchunk(start, end - start, df) |
|
953 | self._loadchunk(start, end - start, df) | |
958 |
|
954 | |||
959 | def chunk(self, rev, df=None): |
|
955 | def chunk(self, rev, df=None): | |
960 | start, length = self.start(rev), self.length(rev) |
|
956 | start, length = self.start(rev), self.length(rev) | |
961 | if self._inline: |
|
957 | if self._inline: | |
962 | start += (rev + 1) * self._io.size |
|
958 | start += (rev + 1) * self._io.size | |
963 | return decompress(self._getchunk(start, length, df)) |
|
959 | return decompress(self._getchunk(start, length, df)) | |
964 |
|
960 | |||
965 | def revdiff(self, rev1, rev2): |
|
961 | def revdiff(self, rev1, rev2): | |
966 | """return or calculate a delta between two revisions""" |
|
962 | """return or calculate a delta between two revisions""" | |
967 | if rev1 + 1 == rev2 and self.base(rev1) == self.base(rev2): |
|
963 | if rev1 + 1 == rev2 and self.base(rev1) == self.base(rev2): | |
968 | return self.chunk(rev2) |
|
964 | return self.chunk(rev2) | |
969 |
|
965 | |||
970 | return mdiff.textdiff(self.revision(self.node(rev1)), |
|
966 | return mdiff.textdiff(self.revision(self.node(rev1)), | |
971 | self.revision(self.node(rev2))) |
|
967 | self.revision(self.node(rev2))) | |
972 |
|
968 | |||
973 | def revision(self, node): |
|
969 | def revision(self, node): | |
974 | """return an uncompressed revision of a given node""" |
|
970 | """return an uncompressed revision of a given node""" | |
975 | if node == nullid: |
|
971 | if node == nullid: | |
976 | return "" |
|
972 | return "" | |
977 | if self._cache and self._cache[0] == node: |
|
973 | if self._cache and self._cache[0] == node: | |
978 | return str(self._cache[2]) |
|
974 | return str(self._cache[2]) | |
979 |
|
975 | |||
980 | # look up what we need to read |
|
976 | # look up what we need to read | |
981 | text = None |
|
977 | text = None | |
982 | rev = self.rev(node) |
|
978 | rev = self.rev(node) | |
983 | base = self.base(rev) |
|
979 | base = self.base(rev) | |
984 |
|
980 | |||
985 | # check rev flags |
|
981 | # check rev flags | |
986 | if self.index[rev][0] & 0xFFFF: |
|
982 | if self.index[rev][0] & 0xFFFF: | |
987 | raise RevlogError(_('incompatible revision flag %x') % |
|
983 | raise RevlogError(_('incompatible revision flag %x') % | |
988 | (self.index[rev][0] & 0xFFFF)) |
|
984 | (self.index[rev][0] & 0xFFFF)) | |
989 |
|
985 | |||
990 | df = None |
|
986 | df = None | |
991 |
|
987 | |||
992 | # do we have useful data cached? |
|
988 | # do we have useful data cached? | |
993 | if self._cache and self._cache[1] >= base and self._cache[1] < rev: |
|
989 | if self._cache and self._cache[1] >= base and self._cache[1] < rev: | |
994 | base = self._cache[1] |
|
990 | base = self._cache[1] | |
995 | text = str(self._cache[2]) |
|
991 | text = str(self._cache[2]) | |
996 | self._loadindex(base, rev + 1) |
|
992 | self._loadindex(base, rev + 1) | |
997 | if not self._inline and rev > base + 1: |
|
993 | if not self._inline and rev > base + 1: | |
998 | df = self.opener(self.datafile) |
|
994 | df = self.opener(self.datafile) | |
999 | self._prime(base, rev, df) |
|
995 | self._prime(base, rev, df) | |
1000 | else: |
|
996 | else: | |
1001 | self._loadindex(base, rev + 1) |
|
997 | self._loadindex(base, rev + 1) | |
1002 | if not self._inline and rev > base: |
|
998 | if not self._inline and rev > base: | |
1003 | df = self.opener(self.datafile) |
|
999 | df = self.opener(self.datafile) | |
1004 | self._prime(base, rev, df) |
|
1000 | self._prime(base, rev, df) | |
1005 | text = self.chunk(base, df=df) |
|
1001 | text = self.chunk(base, df=df) | |
1006 |
|
1002 | |||
1007 | bins = [self.chunk(r, df) for r in xrange(base + 1, rev + 1)] |
|
1003 | bins = [self.chunk(r, df) for r in xrange(base + 1, rev + 1)] | |
1008 | text = mdiff.patches(text, bins) |
|
1004 | text = mdiff.patches(text, bins) | |
1009 | p1, p2 = self.parents(node) |
|
1005 | p1, p2 = self.parents(node) | |
1010 | if node != hash(text, p1, p2): |
|
1006 | if node != hash(text, p1, p2): | |
1011 | raise RevlogError(_("integrity check failed on %s:%d") |
|
1007 | raise RevlogError(_("integrity check failed on %s:%d") | |
1012 | % (self.datafile, rev)) |
|
1008 | % (self.datafile, rev)) | |
1013 |
|
1009 | |||
1014 | self._cache = (node, rev, text) |
|
1010 | self._cache = (node, rev, text) | |
1015 | return text |
|
1011 | return text | |
1016 |
|
1012 | |||
1017 | def checkinlinesize(self, tr, fp=None): |
|
1013 | def checkinlinesize(self, tr, fp=None): | |
1018 | if not self._inline or (self.start(-2) + self.length(-2)) < 131072: |
|
1014 | if not self._inline or (self.start(-2) + self.length(-2)) < 131072: | |
1019 | return |
|
1015 | return | |
1020 |
|
1016 | |||
1021 | trinfo = tr.find(self.indexfile) |
|
1017 | trinfo = tr.find(self.indexfile) | |
1022 | if trinfo is None: |
|
1018 | if trinfo is None: | |
1023 | raise RevlogError(_("%s not found in the transaction") |
|
1019 | raise RevlogError(_("%s not found in the transaction") | |
1024 | % self.indexfile) |
|
1020 | % self.indexfile) | |
1025 |
|
1021 | |||
1026 | trindex = trinfo[2] |
|
1022 | trindex = trinfo[2] | |
1027 | dataoff = self.start(trindex) |
|
1023 | dataoff = self.start(trindex) | |
1028 |
|
1024 | |||
1029 | tr.add(self.datafile, dataoff) |
|
1025 | tr.add(self.datafile, dataoff) | |
1030 |
|
1026 | |||
1031 | if fp: |
|
1027 | if fp: | |
1032 | fp.flush() |
|
1028 | fp.flush() | |
1033 | fp.close() |
|
1029 | fp.close() | |
1034 |
|
1030 | |||
1035 | df = self.opener(self.datafile, 'w') |
|
1031 | df = self.opener(self.datafile, 'w') | |
1036 | try: |
|
1032 | try: | |
1037 | calc = self._io.size |
|
1033 | calc = self._io.size | |
1038 | for r in self: |
|
1034 | for r in self: | |
1039 | start = self.start(r) + (r + 1) * calc |
|
1035 | start = self.start(r) + (r + 1) * calc | |
1040 | length = self.length(r) |
|
1036 | length = self.length(r) | |
1041 | d = self._getchunk(start, length) |
|
1037 | d = self._getchunk(start, length) | |
1042 | df.write(d) |
|
1038 | df.write(d) | |
1043 | finally: |
|
1039 | finally: | |
1044 | df.close() |
|
1040 | df.close() | |
1045 |
|
1041 | |||
1046 | fp = self.opener(self.indexfile, 'w', atomictemp=True) |
|
1042 | fp = self.opener(self.indexfile, 'w', atomictemp=True) | |
1047 | self.version &= ~(REVLOGNGINLINEDATA) |
|
1043 | self.version &= ~(REVLOGNGINLINEDATA) | |
1048 | self._inline = False |
|
1044 | self._inline = False | |
1049 | for i in self: |
|
1045 | for i in self: | |
1050 | e = self._io.packentry(self.index[i], self.node, self.version, i) |
|
1046 | e = self._io.packentry(self.index[i], self.node, self.version, i) | |
1051 | fp.write(e) |
|
1047 | fp.write(e) | |
1052 |
|
1048 | |||
1053 | # if we don't call rename, the temp file will never replace the |
|
1049 | # if we don't call rename, the temp file will never replace the | |
1054 | # real index |
|
1050 | # real index | |
1055 | fp.rename() |
|
1051 | fp.rename() | |
1056 |
|
1052 | |||
1057 | tr.replace(self.indexfile, trindex * calc) |
|
1053 | tr.replace(self.indexfile, trindex * calc) | |
1058 | self._chunkcache = (0, '') |
|
1054 | self._chunkcache = (0, '') | |
1059 |
|
1055 | |||
1060 | def addrevision(self, text, transaction, link, p1, p2, d=None): |
|
1056 | def addrevision(self, text, transaction, link, p1, p2, d=None): | |
1061 | """add a revision to the log |
|
1057 | """add a revision to the log | |
1062 |
|
1058 | |||
1063 | text - the revision data to add |
|
1059 | text - the revision data to add | |
1064 | transaction - the transaction object used for rollback |
|
1060 | transaction - the transaction object used for rollback | |
1065 | link - the linkrev data to add |
|
1061 | link - the linkrev data to add | |
1066 | p1, p2 - the parent nodeids of the revision |
|
1062 | p1, p2 - the parent nodeids of the revision | |
1067 | d - an optional precomputed delta |
|
1063 | d - an optional precomputed delta | |
1068 | """ |
|
1064 | """ | |
1069 | dfh = None |
|
1065 | dfh = None | |
1070 | if not self._inline: |
|
1066 | if not self._inline: | |
1071 | dfh = self.opener(self.datafile, "a") |
|
1067 | dfh = self.opener(self.datafile, "a") | |
1072 | ifh = self.opener(self.indexfile, "a+") |
|
1068 | ifh = self.opener(self.indexfile, "a+") | |
1073 | try: |
|
1069 | try: | |
1074 | return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) |
|
1070 | return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) | |
1075 | finally: |
|
1071 | finally: | |
1076 | if dfh: |
|
1072 | if dfh: | |
1077 | dfh.close() |
|
1073 | dfh.close() | |
1078 | ifh.close() |
|
1074 | ifh.close() | |
1079 |
|
1075 | |||
1080 | def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): |
|
1076 | def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): | |
1081 | node = hash(text, p1, p2) |
|
1077 | node = hash(text, p1, p2) | |
1082 | if node in self.nodemap: |
|
1078 | if node in self.nodemap: | |
1083 | return node |
|
1079 | return node | |
1084 |
|
1080 | |||
1085 | curr = len(self) |
|
1081 | curr = len(self) | |
1086 | prev = curr - 1 |
|
1082 | prev = curr - 1 | |
1087 | base = self.base(prev) |
|
1083 | base = self.base(prev) | |
1088 | offset = self.end(prev) |
|
1084 | offset = self.end(prev) | |
1089 |
|
1085 | |||
1090 | if curr: |
|
1086 | if curr: | |
1091 | if not d: |
|
1087 | if not d: | |
1092 | ptext = self.revision(self.node(prev)) |
|
1088 | ptext = self.revision(self.node(prev)) | |
1093 | d = mdiff.textdiff(ptext, text) |
|
1089 | d = mdiff.textdiff(ptext, text) | |
1094 | data = compress(d) |
|
1090 | data = compress(d) | |
1095 | l = len(data[1]) + len(data[0]) |
|
1091 | l = len(data[1]) + len(data[0]) | |
1096 | dist = l + offset - self.start(base) |
|
1092 | dist = l + offset - self.start(base) | |
1097 |
|
1093 | |||
1098 | # full versions are inserted when the needed deltas |
|
1094 | # full versions are inserted when the needed deltas | |
1099 | # become comparable to the uncompressed text |
|
1095 | # become comparable to the uncompressed text | |
1100 | if not curr or dist > len(text) * 2: |
|
1096 | if not curr or dist > len(text) * 2: | |
1101 | data = compress(text) |
|
1097 | data = compress(text) | |
1102 | l = len(data[1]) + len(data[0]) |
|
1098 | l = len(data[1]) + len(data[0]) | |
1103 | base = curr |
|
1099 | base = curr | |
1104 |
|
1100 | |||
1105 | e = (offset_type(offset, 0), l, len(text), |
|
1101 | e = (offset_type(offset, 0), l, len(text), | |
1106 | base, link, self.rev(p1), self.rev(p2), node) |
|
1102 | base, link, self.rev(p1), self.rev(p2), node) | |
1107 | self.index.insert(-1, e) |
|
1103 | self.index.insert(-1, e) | |
1108 | self.nodemap[node] = curr |
|
1104 | self.nodemap[node] = curr | |
1109 |
|
1105 | |||
1110 | entry = self._io.packentry(e, self.node, self.version, curr) |
|
1106 | entry = self._io.packentry(e, self.node, self.version, curr) | |
1111 | if not self._inline: |
|
1107 | if not self._inline: | |
1112 | transaction.add(self.datafile, offset) |
|
1108 | transaction.add(self.datafile, offset) | |
1113 | transaction.add(self.indexfile, curr * len(entry)) |
|
1109 | transaction.add(self.indexfile, curr * len(entry)) | |
1114 | if data[0]: |
|
1110 | if data[0]: | |
1115 | dfh.write(data[0]) |
|
1111 | dfh.write(data[0]) | |
1116 | dfh.write(data[1]) |
|
1112 | dfh.write(data[1]) | |
1117 | dfh.flush() |
|
1113 | dfh.flush() | |
1118 | ifh.write(entry) |
|
1114 | ifh.write(entry) | |
1119 | else: |
|
1115 | else: | |
1120 | offset += curr * self._io.size |
|
1116 | offset += curr * self._io.size | |
1121 | transaction.add(self.indexfile, offset, curr) |
|
1117 | transaction.add(self.indexfile, offset, curr) | |
1122 | ifh.write(entry) |
|
1118 | ifh.write(entry) | |
1123 | ifh.write(data[0]) |
|
1119 | ifh.write(data[0]) | |
1124 | ifh.write(data[1]) |
|
1120 | ifh.write(data[1]) | |
1125 | self.checkinlinesize(transaction, ifh) |
|
1121 | self.checkinlinesize(transaction, ifh) | |
1126 |
|
1122 | |||
1127 | self._cache = (node, curr, text) |
|
1123 | self._cache = (node, curr, text) | |
1128 | return node |
|
1124 | return node | |
1129 |
|
1125 | |||
1130 | def ancestor(self, a, b): |
|
1126 | def ancestor(self, a, b): | |
1131 | """calculate the least common ancestor of nodes a and b""" |
|
1127 | """calculate the least common ancestor of nodes a and b""" | |
1132 |
|
1128 | |||
1133 | def parents(rev): |
|
1129 | def parents(rev): | |
1134 | return [p for p in self.parentrevs(rev) if p != nullrev] |
|
1130 | return [p for p in self.parentrevs(rev) if p != nullrev] | |
1135 |
|
1131 | |||
1136 | c = ancestor.ancestor(self.rev(a), self.rev(b), parents) |
|
1132 | c = ancestor.ancestor(self.rev(a), self.rev(b), parents) | |
1137 | if c is None: |
|
1133 | if c is None: | |
1138 | return nullid |
|
1134 | return nullid | |
1139 |
|
1135 | |||
1140 | return self.node(c) |
|
1136 | return self.node(c) | |
1141 |
|
1137 | |||
1142 | def group(self, nodelist, lookup, infocollect=None): |
|
1138 | def group(self, nodelist, lookup, infocollect=None): | |
1143 | """calculate a delta group |
|
1139 | """calculate a delta group | |
1144 |
|
1140 | |||
1145 | Given a list of changeset revs, return a set of deltas and |
|
1141 | Given a list of changeset revs, return a set of deltas and | |
1146 | metadata corresponding to nodes. the first delta is |
|
1142 | metadata corresponding to nodes. the first delta is | |
1147 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to |
|
1143 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1148 | have this parent as it has all history before these |
|
1144 | have this parent as it has all history before these | |
1149 | changesets. parent is parent[0] |
|
1145 | changesets. parent is parent[0] | |
1150 | """ |
|
1146 | """ | |
1151 |
|
1147 | |||
1152 | # if we don't have any revisions touched by these changesets, bail |
|
1148 | # if we don't have any revisions touched by these changesets, bail | |
1153 | if not nodelist: |
|
1149 | if not nodelist: | |
1154 | yield changegroup.closechunk() |
|
1150 | yield changegroup.closechunk() | |
1155 | return |
|
1151 | return | |
1156 |
|
1152 | |||
1157 | revs = [self.rev(n) for n in nodelist] |
|
1153 | revs = [self.rev(n) for n in nodelist] | |
1158 |
|
1154 | |||
1159 | # add the parent of the first rev |
|
1155 | # add the parent of the first rev | |
1160 | p = self.parentrevs(revs[0])[0] |
|
1156 | p = self.parentrevs(revs[0])[0] | |
1161 | revs.insert(0, p) |
|
1157 | revs.insert(0, p) | |
1162 |
|
1158 | |||
1163 | # build deltas |
|
1159 | # build deltas | |
1164 | for d in xrange(0, len(revs) - 1): |
|
1160 | for d in xrange(0, len(revs) - 1): | |
1165 | a, b = revs[d], revs[d + 1] |
|
1161 | a, b = revs[d], revs[d + 1] | |
1166 | nb = self.node(b) |
|
1162 | nb = self.node(b) | |
1167 |
|
1163 | |||
1168 | if infocollect is not None: |
|
1164 | if infocollect is not None: | |
1169 | infocollect(nb) |
|
1165 | infocollect(nb) | |
1170 |
|
1166 | |||
1171 | p = self.parents(nb) |
|
1167 | p = self.parents(nb) | |
1172 | meta = nb + p[0] + p[1] + lookup(nb) |
|
1168 | meta = nb + p[0] + p[1] + lookup(nb) | |
1173 | if a == -1: |
|
1169 | if a == -1: | |
1174 | d = self.revision(nb) |
|
1170 | d = self.revision(nb) | |
1175 | meta += mdiff.trivialdiffheader(len(d)) |
|
1171 | meta += mdiff.trivialdiffheader(len(d)) | |
1176 | else: |
|
1172 | else: | |
1177 | d = self.revdiff(a, b) |
|
1173 | d = self.revdiff(a, b) | |
1178 | yield changegroup.chunkheader(len(meta) + len(d)) |
|
1174 | yield changegroup.chunkheader(len(meta) + len(d)) | |
1179 | yield meta |
|
1175 | yield meta | |
1180 | if len(d) > 2**20: |
|
1176 | if len(d) > 2**20: | |
1181 | pos = 0 |
|
1177 | pos = 0 | |
1182 | while pos < len(d): |
|
1178 | while pos < len(d): | |
1183 | pos2 = pos + 2 ** 18 |
|
1179 | pos2 = pos + 2 ** 18 | |
1184 | yield d[pos:pos2] |
|
1180 | yield d[pos:pos2] | |
1185 | pos = pos2 |
|
1181 | pos = pos2 | |
1186 | else: |
|
1182 | else: | |
1187 | yield d |
|
1183 | yield d | |
1188 |
|
1184 | |||
1189 | yield changegroup.closechunk() |
|
1185 | yield changegroup.closechunk() | |
1190 |
|
1186 | |||
1191 | def addgroup(self, revs, linkmapper, transaction): |
|
1187 | def addgroup(self, revs, linkmapper, transaction): | |
1192 | """ |
|
1188 | """ | |
1193 | add a delta group |
|
1189 | add a delta group | |
1194 |
|
1190 | |||
1195 | given a set of deltas, add them to the revision log. the |
|
1191 | given a set of deltas, add them to the revision log. the | |
1196 | first delta is against its parent, which should be in our |
|
1192 | first delta is against its parent, which should be in our | |
1197 | log, the rest are against the previous delta. |
|
1193 | log, the rest are against the previous delta. | |
1198 | """ |
|
1194 | """ | |
1199 |
|
1195 | |||
1200 | #track the base of the current delta log |
|
1196 | #track the base of the current delta log | |
1201 | r = len(self) |
|
1197 | r = len(self) | |
1202 | t = r - 1 |
|
1198 | t = r - 1 | |
1203 | node = None |
|
1199 | node = None | |
1204 |
|
1200 | |||
1205 | base = prev = nullrev |
|
1201 | base = prev = nullrev | |
1206 | start = end = textlen = 0 |
|
1202 | start = end = textlen = 0 | |
1207 | if r: |
|
1203 | if r: | |
1208 | end = self.end(t) |
|
1204 | end = self.end(t) | |
1209 |
|
1205 | |||
1210 | ifh = self.opener(self.indexfile, "a+") |
|
1206 | ifh = self.opener(self.indexfile, "a+") | |
1211 | isize = r * self._io.size |
|
1207 | isize = r * self._io.size | |
1212 | if self._inline: |
|
1208 | if self._inline: | |
1213 | transaction.add(self.indexfile, end + isize, r) |
|
1209 | transaction.add(self.indexfile, end + isize, r) | |
1214 | dfh = None |
|
1210 | dfh = None | |
1215 | else: |
|
1211 | else: | |
1216 | transaction.add(self.indexfile, isize, r) |
|
1212 | transaction.add(self.indexfile, isize, r) | |
1217 | transaction.add(self.datafile, end) |
|
1213 | transaction.add(self.datafile, end) | |
1218 | dfh = self.opener(self.datafile, "a") |
|
1214 | dfh = self.opener(self.datafile, "a") | |
1219 |
|
1215 | |||
1220 | try: |
|
1216 | try: | |
1221 | # loop through our set of deltas |
|
1217 | # loop through our set of deltas | |
1222 | chain = None |
|
1218 | chain = None | |
1223 | for chunk in revs: |
|
1219 | for chunk in revs: | |
1224 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) |
|
1220 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
1225 | link = linkmapper(cs) |
|
1221 | link = linkmapper(cs) | |
1226 | if node in self.nodemap: |
|
1222 | if node in self.nodemap: | |
1227 | # this can happen if two branches make the same change |
|
1223 | # this can happen if two branches make the same change | |
1228 | chain = node |
|
1224 | chain = node | |
1229 | continue |
|
1225 | continue | |
1230 | delta = buffer(chunk, 80) |
|
1226 | delta = buffer(chunk, 80) | |
1231 | del chunk |
|
1227 | del chunk | |
1232 |
|
1228 | |||
1233 | for p in (p1, p2): |
|
1229 | for p in (p1, p2): | |
1234 | if not p in self.nodemap: |
|
1230 | if not p in self.nodemap: | |
1235 | raise LookupError(p, self.indexfile, _('unknown parent')) |
|
1231 | raise LookupError(p, self.indexfile, _('unknown parent')) | |
1236 |
|
1232 | |||
1237 | if not chain: |
|
1233 | if not chain: | |
1238 | # retrieve the parent revision of the delta chain |
|
1234 | # retrieve the parent revision of the delta chain | |
1239 | chain = p1 |
|
1235 | chain = p1 | |
1240 | if not chain in self.nodemap: |
|
1236 | if not chain in self.nodemap: | |
1241 | raise LookupError(chain, self.indexfile, _('unknown base')) |
|
1237 | raise LookupError(chain, self.indexfile, _('unknown base')) | |
1242 |
|
1238 | |||
1243 | # full versions are inserted when the needed deltas become |
|
1239 | # full versions are inserted when the needed deltas become | |
1244 | # comparable to the uncompressed text or when the previous |
|
1240 | # comparable to the uncompressed text or when the previous | |
1245 | # version is not the one we have a delta against. We use |
|
1241 | # version is not the one we have a delta against. We use | |
1246 | # the size of the previous full rev as a proxy for the |
|
1242 | # the size of the previous full rev as a proxy for the | |
1247 | # current size. |
|
1243 | # current size. | |
1248 |
|
1244 | |||
1249 | if chain == prev: |
|
1245 | if chain == prev: | |
1250 | cdelta = compress(delta) |
|
1246 | cdelta = compress(delta) | |
1251 | cdeltalen = len(cdelta[0]) + len(cdelta[1]) |
|
1247 | cdeltalen = len(cdelta[0]) + len(cdelta[1]) | |
1252 | textlen = mdiff.patchedsize(textlen, delta) |
|
1248 | textlen = mdiff.patchedsize(textlen, delta) | |
1253 |
|
1249 | |||
1254 | if chain != prev or (end - start + cdeltalen) > textlen * 2: |
|
1250 | if chain != prev or (end - start + cdeltalen) > textlen * 2: | |
1255 | # flush our writes here so we can read it in revision |
|
1251 | # flush our writes here so we can read it in revision | |
1256 | if dfh: |
|
1252 | if dfh: | |
1257 | dfh.flush() |
|
1253 | dfh.flush() | |
1258 | ifh.flush() |
|
1254 | ifh.flush() | |
1259 | text = self.revision(chain) |
|
1255 | text = self.revision(chain) | |
1260 | if len(text) == 0: |
|
1256 | if len(text) == 0: | |
1261 | # skip over trivial delta header |
|
1257 | # skip over trivial delta header | |
1262 | text = buffer(delta, 12) |
|
1258 | text = buffer(delta, 12) | |
1263 | else: |
|
1259 | else: | |
1264 | text = mdiff.patches(text, [delta]) |
|
1260 | text = mdiff.patches(text, [delta]) | |
1265 | del delta |
|
1261 | del delta | |
1266 | chk = self._addrevision(text, transaction, link, p1, p2, None, |
|
1262 | chk = self._addrevision(text, transaction, link, p1, p2, None, | |
1267 | ifh, dfh) |
|
1263 | ifh, dfh) | |
1268 | if not dfh and not self._inline: |
|
1264 | if not dfh and not self._inline: | |
1269 | # addrevision switched from inline to conventional |
|
1265 | # addrevision switched from inline to conventional | |
1270 | # reopen the index |
|
1266 | # reopen the index | |
1271 | dfh = self.opener(self.datafile, "a") |
|
1267 | dfh = self.opener(self.datafile, "a") | |
1272 | ifh = self.opener(self.indexfile, "a") |
|
1268 | ifh = self.opener(self.indexfile, "a") | |
1273 | if chk != node: |
|
1269 | if chk != node: | |
1274 | raise RevlogError(_("consistency error adding group")) |
|
1270 | raise RevlogError(_("consistency error adding group")) | |
1275 | textlen = len(text) |
|
1271 | textlen = len(text) | |
1276 | else: |
|
1272 | else: | |
1277 | e = (offset_type(end, 0), cdeltalen, textlen, base, |
|
1273 | e = (offset_type(end, 0), cdeltalen, textlen, base, | |
1278 | link, self.rev(p1), self.rev(p2), node) |
|
1274 | link, self.rev(p1), self.rev(p2), node) | |
1279 | self.index.insert(-1, e) |
|
1275 | self.index.insert(-1, e) | |
1280 | self.nodemap[node] = r |
|
1276 | self.nodemap[node] = r | |
1281 | entry = self._io.packentry(e, self.node, self.version, r) |
|
1277 | entry = self._io.packentry(e, self.node, self.version, r) | |
1282 | if self._inline: |
|
1278 | if self._inline: | |
1283 | ifh.write(entry) |
|
1279 | ifh.write(entry) | |
1284 | ifh.write(cdelta[0]) |
|
1280 | ifh.write(cdelta[0]) | |
1285 | ifh.write(cdelta[1]) |
|
1281 | ifh.write(cdelta[1]) | |
1286 | self.checkinlinesize(transaction, ifh) |
|
1282 | self.checkinlinesize(transaction, ifh) | |
1287 | if not self._inline: |
|
1283 | if not self._inline: | |
1288 | dfh = self.opener(self.datafile, "a") |
|
1284 | dfh = self.opener(self.datafile, "a") | |
1289 | ifh = self.opener(self.indexfile, "a") |
|
1285 | ifh = self.opener(self.indexfile, "a") | |
1290 | else: |
|
1286 | else: | |
1291 | dfh.write(cdelta[0]) |
|
1287 | dfh.write(cdelta[0]) | |
1292 | dfh.write(cdelta[1]) |
|
1288 | dfh.write(cdelta[1]) | |
1293 | ifh.write(entry) |
|
1289 | ifh.write(entry) | |
1294 |
|
1290 | |||
1295 | t, r, chain, prev = r, r + 1, node, node |
|
1291 | t, r, chain, prev = r, r + 1, node, node | |
1296 | base = self.base(t) |
|
1292 | base = self.base(t) | |
1297 | start = self.start(base) |
|
1293 | start = self.start(base) | |
1298 | end = self.end(t) |
|
1294 | end = self.end(t) | |
1299 | finally: |
|
1295 | finally: | |
1300 | if dfh: |
|
1296 | if dfh: | |
1301 | dfh.close() |
|
1297 | dfh.close() | |
1302 | ifh.close() |
|
1298 | ifh.close() | |
1303 |
|
1299 | |||
1304 | return node |
|
1300 | return node | |
1305 |
|
1301 | |||
1306 | def strip(self, minlink, transaction): |
|
1302 | def strip(self, minlink, transaction): | |
1307 | """truncate the revlog on the first revision with a linkrev >= minlink |
|
1303 | """truncate the revlog on the first revision with a linkrev >= minlink | |
1308 |
|
1304 | |||
1309 | This function is called when we're stripping revision minlink and |
|
1305 | This function is called when we're stripping revision minlink and | |
1310 | its descendants from the repository. |
|
1306 | its descendants from the repository. | |
1311 |
|
1307 | |||
1312 | We have to remove all revisions with linkrev >= minlink, because |
|
1308 | We have to remove all revisions with linkrev >= minlink, because | |
1313 | the equivalent changelog revisions will be renumbered after the |
|
1309 | the equivalent changelog revisions will be renumbered after the | |
1314 | strip. |
|
1310 | strip. | |
1315 |
|
1311 | |||
1316 | So we truncate the revlog on the first of these revisions, and |
|
1312 | So we truncate the revlog on the first of these revisions, and | |
1317 | trust that the caller has saved the revisions that shouldn't be |
|
1313 | trust that the caller has saved the revisions that shouldn't be | |
1318 | removed and that it'll readd them after this truncation. |
|
1314 | removed and that it'll readd them after this truncation. | |
1319 | """ |
|
1315 | """ | |
1320 | if len(self) == 0: |
|
1316 | if len(self) == 0: | |
1321 | return |
|
1317 | return | |
1322 |
|
1318 | |||
1323 | if isinstance(self.index, lazyindex): |
|
1319 | if isinstance(self.index, lazyindex): | |
1324 | self._loadindexmap() |
|
1320 | self._loadindexmap() | |
1325 |
|
1321 | |||
1326 | for rev in self: |
|
1322 | for rev in self: | |
1327 | if self.index[rev][4] >= minlink: |
|
1323 | if self.index[rev][4] >= minlink: | |
1328 | break |
|
1324 | break | |
1329 | else: |
|
1325 | else: | |
1330 | return |
|
1326 | return | |
1331 |
|
1327 | |||
1332 | # first truncate the files on disk |
|
1328 | # first truncate the files on disk | |
1333 | end = self.start(rev) |
|
1329 | end = self.start(rev) | |
1334 | if not self._inline: |
|
1330 | if not self._inline: | |
1335 | transaction.add(self.datafile, end) |
|
1331 | transaction.add(self.datafile, end) | |
1336 | end = rev * self._io.size |
|
1332 | end = rev * self._io.size | |
1337 | else: |
|
1333 | else: | |
1338 | end += rev * self._io.size |
|
1334 | end += rev * self._io.size | |
1339 |
|
1335 | |||
1340 | transaction.add(self.indexfile, end) |
|
1336 | transaction.add(self.indexfile, end) | |
1341 |
|
1337 | |||
1342 | # then reset internal state in memory to forget those revisions |
|
1338 | # then reset internal state in memory to forget those revisions | |
1343 | self._cache = None |
|
1339 | self._cache = None | |
1344 | self._chunkcache = (0, '') |
|
1340 | self._chunkcache = (0, '') | |
1345 | for x in xrange(rev, len(self)): |
|
1341 | for x in xrange(rev, len(self)): | |
1346 | del self.nodemap[self.node(x)] |
|
1342 | del self.nodemap[self.node(x)] | |
1347 |
|
1343 | |||
1348 | del self.index[rev:-1] |
|
1344 | del self.index[rev:-1] | |
1349 |
|
1345 | |||
1350 | def checksize(self): |
|
1346 | def checksize(self): | |
1351 | expected = 0 |
|
1347 | expected = 0 | |
1352 | if len(self): |
|
1348 | if len(self): | |
1353 | expected = max(0, self.end(len(self) - 1)) |
|
1349 | expected = max(0, self.end(len(self) - 1)) | |
1354 |
|
1350 | |||
1355 | try: |
|
1351 | try: | |
1356 | f = self.opener(self.datafile) |
|
1352 | f = self.opener(self.datafile) | |
1357 | f.seek(0, 2) |
|
1353 | f.seek(0, 2) | |
1358 | actual = f.tell() |
|
1354 | actual = f.tell() | |
1359 | dd = actual - expected |
|
1355 | dd = actual - expected | |
1360 | except IOError, inst: |
|
1356 | except IOError, inst: | |
1361 | if inst.errno != errno.ENOENT: |
|
1357 | if inst.errno != errno.ENOENT: | |
1362 | raise |
|
1358 | raise | |
1363 | dd = 0 |
|
1359 | dd = 0 | |
1364 |
|
1360 | |||
1365 | try: |
|
1361 | try: | |
1366 | f = self.opener(self.indexfile) |
|
1362 | f = self.opener(self.indexfile) | |
1367 | f.seek(0, 2) |
|
1363 | f.seek(0, 2) | |
1368 | actual = f.tell() |
|
1364 | actual = f.tell() | |
1369 | s = self._io.size |
|
1365 | s = self._io.size | |
1370 | i = max(0, actual / s) |
|
1366 | i = max(0, actual / s) | |
1371 | di = actual - (i * s) |
|
1367 | di = actual - (i * s) | |
1372 | if self._inline: |
|
1368 | if self._inline: | |
1373 | databytes = 0 |
|
1369 | databytes = 0 | |
1374 | for r in self: |
|
1370 | for r in self: | |
1375 | databytes += max(0, self.length(r)) |
|
1371 | databytes += max(0, self.length(r)) | |
1376 | dd = 0 |
|
1372 | dd = 0 | |
1377 | di = actual - len(self) * s - databytes |
|
1373 | di = actual - len(self) * s - databytes | |
1378 | except IOError, inst: |
|
1374 | except IOError, inst: | |
1379 | if inst.errno != errno.ENOENT: |
|
1375 | if inst.errno != errno.ENOENT: | |
1380 | raise |
|
1376 | raise | |
1381 | di = 0 |
|
1377 | di = 0 | |
1382 |
|
1378 | |||
1383 | return (dd, di) |
|
1379 | return (dd, di) | |
1384 |
|
1380 | |||
1385 | def files(self): |
|
1381 | def files(self): | |
1386 | res = [ self.indexfile ] |
|
1382 | res = [ self.indexfile ] | |
1387 | if not self._inline: |
|
1383 | if not self._inline: | |
1388 | res.append(self.datafile) |
|
1384 | res.append(self.datafile) | |
1389 | return res |
|
1385 | return res |
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