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@@ -1,1450 +1,1464 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 or any later version. |
|
6 | # GNU General Public License version 2 or any later version. | |
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 | _cached, _uncached = 0, 0 | |||
|
27 | ||||
26 | # revlog header flags |
|
28 | # revlog header flags | |
27 | REVLOGV0 = 0 |
|
29 | REVLOGV0 = 0 | |
28 | REVLOGNG = 1 |
|
30 | REVLOGNG = 1 | |
29 | REVLOGNGINLINEDATA = (1 << 16) |
|
31 | REVLOGNGINLINEDATA = (1 << 16) | |
30 | REVLOGSHALLOW = (1 << 17) |
|
32 | REVLOGSHALLOW = (1 << 17) | |
31 | REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA |
|
33 | REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA | |
32 | REVLOG_DEFAULT_FORMAT = REVLOGNG |
|
34 | REVLOG_DEFAULT_FORMAT = REVLOGNG | |
33 | REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
|
35 | REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS | |
34 | REVLOGNG_FLAGS = REVLOGNGINLINEDATA | REVLOGSHALLOW |
|
36 | REVLOGNG_FLAGS = REVLOGNGINLINEDATA | REVLOGSHALLOW | |
35 |
|
37 | |||
36 | # revlog index flags |
|
38 | # revlog index flags | |
37 | REVIDX_PARENTDELTA = 1 |
|
39 | REVIDX_PARENTDELTA = 1 | |
38 | REVIDX_PUNCHED_FLAG = 2 |
|
40 | REVIDX_PUNCHED_FLAG = 2 | |
39 | REVIDX_KNOWN_FLAGS = REVIDX_PUNCHED_FLAG | REVIDX_PARENTDELTA |
|
41 | REVIDX_KNOWN_FLAGS = REVIDX_PUNCHED_FLAG | REVIDX_PARENTDELTA | |
40 |
|
42 | |||
41 | # amount of data read unconditionally, should be >= 4 |
|
43 | # amount of data read unconditionally, should be >= 4 | |
42 | # when not inline: threshold for using lazy index |
|
44 | # when not inline: threshold for using lazy index | |
43 | _prereadsize = 1048576 |
|
45 | _prereadsize = 1048576 | |
44 | # max size of revlog with inline data |
|
46 | # max size of revlog with inline data | |
45 | _maxinline = 131072 |
|
47 | _maxinline = 131072 | |
46 |
|
48 | |||
47 | RevlogError = error.RevlogError |
|
49 | RevlogError = error.RevlogError | |
48 | LookupError = error.LookupError |
|
50 | LookupError = error.LookupError | |
49 |
|
51 | |||
50 | def getoffset(q): |
|
52 | def getoffset(q): | |
51 | return int(q >> 16) |
|
53 | return int(q >> 16) | |
52 |
|
54 | |||
53 | def gettype(q): |
|
55 | def gettype(q): | |
54 | return int(q & 0xFFFF) |
|
56 | return int(q & 0xFFFF) | |
55 |
|
57 | |||
56 | def offset_type(offset, type): |
|
58 | def offset_type(offset, type): | |
57 | return long(long(offset) << 16 | type) |
|
59 | return long(long(offset) << 16 | type) | |
58 |
|
60 | |||
59 | nullhash = _sha(nullid) |
|
61 | nullhash = _sha(nullid) | |
60 |
|
62 | |||
61 | def hash(text, p1, p2): |
|
63 | def hash(text, p1, p2): | |
62 | """generate a hash from the given text and its parent hashes |
|
64 | """generate a hash from the given text and its parent hashes | |
63 |
|
65 | |||
64 | This hash combines both the current file contents and its history |
|
66 | This hash combines both the current file contents and its history | |
65 | in a manner that makes it easy to distinguish nodes with the same |
|
67 | in a manner that makes it easy to distinguish nodes with the same | |
66 | content in the revision graph. |
|
68 | content in the revision graph. | |
67 | """ |
|
69 | """ | |
68 | # As of now, if one of the parent node is null, p2 is null |
|
70 | # As of now, if one of the parent node is null, p2 is null | |
69 | if p2 == nullid: |
|
71 | if p2 == nullid: | |
70 | # deep copy of a hash is faster than creating one |
|
72 | # deep copy of a hash is faster than creating one | |
71 | s = nullhash.copy() |
|
73 | s = nullhash.copy() | |
72 | s.update(p1) |
|
74 | s.update(p1) | |
73 | else: |
|
75 | else: | |
74 | # none of the parent nodes are nullid |
|
76 | # none of the parent nodes are nullid | |
75 | l = [p1, p2] |
|
77 | l = [p1, p2] | |
76 | l.sort() |
|
78 | l.sort() | |
77 | s = _sha(l[0]) |
|
79 | s = _sha(l[0]) | |
78 | s.update(l[1]) |
|
80 | s.update(l[1]) | |
79 | s.update(text) |
|
81 | s.update(text) | |
80 | return s.digest() |
|
82 | return s.digest() | |
81 |
|
83 | |||
82 | def compress(text): |
|
84 | def compress(text): | |
83 | """ generate a possibly-compressed representation of text """ |
|
85 | """ generate a possibly-compressed representation of text """ | |
84 | if not text: |
|
86 | if not text: | |
85 | return ("", text) |
|
87 | return ("", text) | |
86 | l = len(text) |
|
88 | l = len(text) | |
87 | bin = None |
|
89 | bin = None | |
88 | if l < 44: |
|
90 | if l < 44: | |
89 | pass |
|
91 | pass | |
90 | elif l > 1000000: |
|
92 | elif l > 1000000: | |
91 | # zlib makes an internal copy, thus doubling memory usage for |
|
93 | # zlib makes an internal copy, thus doubling memory usage for | |
92 | # large files, so lets do this in pieces |
|
94 | # large files, so lets do this in pieces | |
93 | z = zlib.compressobj() |
|
95 | z = zlib.compressobj() | |
94 | p = [] |
|
96 | p = [] | |
95 | pos = 0 |
|
97 | pos = 0 | |
96 | while pos < l: |
|
98 | while pos < l: | |
97 | pos2 = pos + 2**20 |
|
99 | pos2 = pos + 2**20 | |
98 | p.append(z.compress(text[pos:pos2])) |
|
100 | p.append(z.compress(text[pos:pos2])) | |
99 | pos = pos2 |
|
101 | pos = pos2 | |
100 | p.append(z.flush()) |
|
102 | p.append(z.flush()) | |
101 | if sum(map(len, p)) < l: |
|
103 | if sum(map(len, p)) < l: | |
102 | bin = "".join(p) |
|
104 | bin = "".join(p) | |
103 | else: |
|
105 | else: | |
104 | bin = _compress(text) |
|
106 | bin = _compress(text) | |
105 | if bin is None or len(bin) > l: |
|
107 | if bin is None or len(bin) > l: | |
106 | if text[0] == '\0': |
|
108 | if text[0] == '\0': | |
107 | return ("", text) |
|
109 | return ("", text) | |
108 | return ('u', text) |
|
110 | return ('u', text) | |
109 | return ("", bin) |
|
111 | return ("", bin) | |
110 |
|
112 | |||
111 | def decompress(bin): |
|
113 | def decompress(bin): | |
112 | """ decompress the given input """ |
|
114 | """ decompress the given input """ | |
113 | if not bin: |
|
115 | if not bin: | |
114 | return bin |
|
116 | return bin | |
115 | t = bin[0] |
|
117 | t = bin[0] | |
116 | if t == '\0': |
|
118 | if t == '\0': | |
117 | return bin |
|
119 | return bin | |
118 | if t == 'x': |
|
120 | if t == 'x': | |
119 | return _decompress(bin) |
|
121 | return _decompress(bin) | |
120 | if t == 'u': |
|
122 | if t == 'u': | |
121 | return bin[1:] |
|
123 | return bin[1:] | |
122 | raise RevlogError(_("unknown compression type %r") % t) |
|
124 | raise RevlogError(_("unknown compression type %r") % t) | |
123 |
|
125 | |||
124 | class lazyparser(object): |
|
126 | class lazyparser(object): | |
125 | """ |
|
127 | """ | |
126 | this class avoids the need to parse the entirety of large indices |
|
128 | this class avoids the need to parse the entirety of large indices | |
127 | """ |
|
129 | """ | |
128 |
|
130 | |||
129 | # lazyparser is not safe to use on windows if win32 extensions not |
|
131 | # lazyparser is not safe to use on windows if win32 extensions not | |
130 | # available. it keeps file handle open, which make it not possible |
|
132 | # available. it keeps file handle open, which make it not possible | |
131 | # to break hardlinks on local cloned repos. |
|
133 | # to break hardlinks on local cloned repos. | |
132 |
|
134 | |||
133 | def __init__(self, dataf): |
|
135 | def __init__(self, dataf): | |
134 | try: |
|
136 | try: | |
135 | size = util.fstat(dataf).st_size |
|
137 | size = util.fstat(dataf).st_size | |
136 | except AttributeError: |
|
138 | except AttributeError: | |
137 | size = 0 |
|
139 | size = 0 | |
138 | self.dataf = dataf |
|
140 | self.dataf = dataf | |
139 | self.s = struct.calcsize(indexformatng) |
|
141 | self.s = struct.calcsize(indexformatng) | |
140 | self.datasize = size |
|
142 | self.datasize = size | |
141 | self.l = size // self.s |
|
143 | self.l = size // self.s | |
142 | self.index = [None] * self.l |
|
144 | self.index = [None] * self.l | |
143 | self.map = {nullid: nullrev} |
|
145 | self.map = {nullid: nullrev} | |
144 | self.allmap = 0 |
|
146 | self.allmap = 0 | |
145 | self.all = 0 |
|
147 | self.all = 0 | |
146 | self.mapfind_count = 0 |
|
148 | self.mapfind_count = 0 | |
147 |
|
149 | |||
148 | def loadmap(self): |
|
150 | def loadmap(self): | |
149 | """ |
|
151 | """ | |
150 | during a commit, we need to make sure the rev being added is |
|
152 | during a commit, we need to make sure the rev being added is | |
151 | not a duplicate. This requires loading the entire index, |
|
153 | not a duplicate. This requires loading the entire index, | |
152 | which is fairly slow. loadmap can load up just the node map, |
|
154 | which is fairly slow. loadmap can load up just the node map, | |
153 | which takes much less time. |
|
155 | which takes much less time. | |
154 | """ |
|
156 | """ | |
155 | if self.allmap: |
|
157 | if self.allmap: | |
156 | return |
|
158 | return | |
157 | end = self.datasize |
|
159 | end = self.datasize | |
158 | self.allmap = 1 |
|
160 | self.allmap = 1 | |
159 | cur = 0 |
|
161 | cur = 0 | |
160 | count = 0 |
|
162 | count = 0 | |
161 | blocksize = self.s * 256 |
|
163 | blocksize = self.s * 256 | |
162 | self.dataf.seek(0) |
|
164 | self.dataf.seek(0) | |
163 | while cur < end: |
|
165 | while cur < end: | |
164 | data = self.dataf.read(blocksize) |
|
166 | data = self.dataf.read(blocksize) | |
165 | off = 0 |
|
167 | off = 0 | |
166 | for x in xrange(256): |
|
168 | for x in xrange(256): | |
167 | n = data[off + ngshaoffset:off + ngshaoffset + 20] |
|
169 | n = data[off + ngshaoffset:off + ngshaoffset + 20] | |
168 | self.map[n] = count |
|
170 | self.map[n] = count | |
169 | count += 1 |
|
171 | count += 1 | |
170 | if count >= self.l: |
|
172 | if count >= self.l: | |
171 | break |
|
173 | break | |
172 | off += self.s |
|
174 | off += self.s | |
173 | cur += blocksize |
|
175 | cur += blocksize | |
174 |
|
176 | |||
175 | def loadblock(self, blockstart, blocksize, data=None): |
|
177 | def loadblock(self, blockstart, blocksize, data=None): | |
176 | if self.all: |
|
178 | if self.all: | |
177 | return |
|
179 | return | |
178 | if data is None: |
|
180 | if data is None: | |
179 | self.dataf.seek(blockstart) |
|
181 | self.dataf.seek(blockstart) | |
180 | if blockstart + blocksize > self.datasize: |
|
182 | if blockstart + blocksize > self.datasize: | |
181 | # the revlog may have grown since we've started running, |
|
183 | # the revlog may have grown since we've started running, | |
182 | # but we don't have space in self.index for more entries. |
|
184 | # but we don't have space in self.index for more entries. | |
183 | # limit blocksize so that we don't get too much data. |
|
185 | # limit blocksize so that we don't get too much data. | |
184 | blocksize = max(self.datasize - blockstart, 0) |
|
186 | blocksize = max(self.datasize - blockstart, 0) | |
185 | data = self.dataf.read(blocksize) |
|
187 | data = self.dataf.read(blocksize) | |
186 | lend = len(data) // self.s |
|
188 | lend = len(data) // self.s | |
187 | i = blockstart // self.s |
|
189 | i = blockstart // self.s | |
188 | off = 0 |
|
190 | off = 0 | |
189 | # lazyindex supports __delitem__ |
|
191 | # lazyindex supports __delitem__ | |
190 | if lend > len(self.index) - i: |
|
192 | if lend > len(self.index) - i: | |
191 | lend = len(self.index) - i |
|
193 | lend = len(self.index) - i | |
192 | for x in xrange(lend): |
|
194 | for x in xrange(lend): | |
193 | if self.index[i + x] is None: |
|
195 | if self.index[i + x] is None: | |
194 | b = data[off : off + self.s] |
|
196 | b = data[off : off + self.s] | |
195 | self.index[i + x] = b |
|
197 | self.index[i + x] = b | |
196 | n = b[ngshaoffset:ngshaoffset + 20] |
|
198 | n = b[ngshaoffset:ngshaoffset + 20] | |
197 | self.map[n] = i + x |
|
199 | self.map[n] = i + x | |
198 | off += self.s |
|
200 | off += self.s | |
199 |
|
201 | |||
200 | def findnode(self, node): |
|
202 | def findnode(self, node): | |
201 | """search backwards through the index file for a specific node""" |
|
203 | """search backwards through the index file for a specific node""" | |
202 | if self.allmap: |
|
204 | if self.allmap: | |
203 | return None |
|
205 | return None | |
204 |
|
206 | |||
205 | # hg log will cause many many searches for the manifest |
|
207 | # hg log will cause many many searches for the manifest | |
206 | # nodes. After we get called a few times, just load the whole |
|
208 | # nodes. After we get called a few times, just load the whole | |
207 | # thing. |
|
209 | # thing. | |
208 | if self.mapfind_count > 8: |
|
210 | if self.mapfind_count > 8: | |
209 | self.loadmap() |
|
211 | self.loadmap() | |
210 | if node in self.map: |
|
212 | if node in self.map: | |
211 | return node |
|
213 | return node | |
212 | return None |
|
214 | return None | |
213 | self.mapfind_count += 1 |
|
215 | self.mapfind_count += 1 | |
214 | last = self.l - 1 |
|
216 | last = self.l - 1 | |
215 | while self.index[last] != None: |
|
217 | while self.index[last] != None: | |
216 | if last == 0: |
|
218 | if last == 0: | |
217 | self.all = 1 |
|
219 | self.all = 1 | |
218 | self.allmap = 1 |
|
220 | self.allmap = 1 | |
219 | return None |
|
221 | return None | |
220 | last -= 1 |
|
222 | last -= 1 | |
221 | end = (last + 1) * self.s |
|
223 | end = (last + 1) * self.s | |
222 | blocksize = self.s * 256 |
|
224 | blocksize = self.s * 256 | |
223 | while end >= 0: |
|
225 | while end >= 0: | |
224 | start = max(end - blocksize, 0) |
|
226 | start = max(end - blocksize, 0) | |
225 | self.dataf.seek(start) |
|
227 | self.dataf.seek(start) | |
226 | data = self.dataf.read(end - start) |
|
228 | data = self.dataf.read(end - start) | |
227 | findend = end - start |
|
229 | findend = end - start | |
228 | while True: |
|
230 | while True: | |
229 | # we're searching backwards, so we have to make sure |
|
231 | # we're searching backwards, so we have to make sure | |
230 | # we don't find a changeset where this node is a parent |
|
232 | # we don't find a changeset where this node is a parent | |
231 | off = data.find(node, 0, findend) |
|
233 | off = data.find(node, 0, findend) | |
232 | findend = off |
|
234 | findend = off | |
233 | if off >= 0: |
|
235 | if off >= 0: | |
234 | i = off / self.s |
|
236 | i = off / self.s | |
235 | off = i * self.s |
|
237 | off = i * self.s | |
236 | n = data[off + ngshaoffset:off + ngshaoffset + 20] |
|
238 | n = data[off + ngshaoffset:off + ngshaoffset + 20] | |
237 | if n == node: |
|
239 | if n == node: | |
238 | self.map[n] = i + start / self.s |
|
240 | self.map[n] = i + start / self.s | |
239 | return node |
|
241 | return node | |
240 | else: |
|
242 | else: | |
241 | break |
|
243 | break | |
242 | end -= blocksize |
|
244 | end -= blocksize | |
243 | return None |
|
245 | return None | |
244 |
|
246 | |||
245 | def loadindex(self, i=None, end=None): |
|
247 | def loadindex(self, i=None, end=None): | |
246 | if self.all: |
|
248 | if self.all: | |
247 | return |
|
249 | return | |
248 | all = False |
|
250 | all = False | |
249 | if i is None: |
|
251 | if i is None: | |
250 | blockstart = 0 |
|
252 | blockstart = 0 | |
251 | blocksize = (65536 / self.s) * self.s |
|
253 | blocksize = (65536 / self.s) * self.s | |
252 | end = self.datasize |
|
254 | end = self.datasize | |
253 | all = True |
|
255 | all = True | |
254 | else: |
|
256 | else: | |
255 | if end: |
|
257 | if end: | |
256 | blockstart = i * self.s |
|
258 | blockstart = i * self.s | |
257 | end = end * self.s |
|
259 | end = end * self.s | |
258 | blocksize = end - blockstart |
|
260 | blocksize = end - blockstart | |
259 | else: |
|
261 | else: | |
260 | blockstart = (i & ~1023) * self.s |
|
262 | blockstart = (i & ~1023) * self.s | |
261 | blocksize = self.s * 1024 |
|
263 | blocksize = self.s * 1024 | |
262 | end = blockstart + blocksize |
|
264 | end = blockstart + blocksize | |
263 | while blockstart < end: |
|
265 | while blockstart < end: | |
264 | self.loadblock(blockstart, blocksize) |
|
266 | self.loadblock(blockstart, blocksize) | |
265 | blockstart += blocksize |
|
267 | blockstart += blocksize | |
266 | if all: |
|
268 | if all: | |
267 | self.all = True |
|
269 | self.all = True | |
268 |
|
270 | |||
269 | class lazyindex(object): |
|
271 | class lazyindex(object): | |
270 | """a lazy version of the index array""" |
|
272 | """a lazy version of the index array""" | |
271 | def __init__(self, parser): |
|
273 | def __init__(self, parser): | |
272 | self.p = parser |
|
274 | self.p = parser | |
273 | def __len__(self): |
|
275 | def __len__(self): | |
274 | return len(self.p.index) |
|
276 | return len(self.p.index) | |
275 | def load(self, pos): |
|
277 | def load(self, pos): | |
276 | if pos < 0: |
|
278 | if pos < 0: | |
277 | pos += len(self.p.index) |
|
279 | pos += len(self.p.index) | |
278 | self.p.loadindex(pos) |
|
280 | self.p.loadindex(pos) | |
279 | return self.p.index[pos] |
|
281 | return self.p.index[pos] | |
280 | def __getitem__(self, pos): |
|
282 | def __getitem__(self, pos): | |
281 | return _unpack(indexformatng, self.p.index[pos] or self.load(pos)) |
|
283 | return _unpack(indexformatng, self.p.index[pos] or self.load(pos)) | |
282 | def __setitem__(self, pos, item): |
|
284 | def __setitem__(self, pos, item): | |
283 | self.p.index[pos] = _pack(indexformatng, *item) |
|
285 | self.p.index[pos] = _pack(indexformatng, *item) | |
284 | def __delitem__(self, pos): |
|
286 | def __delitem__(self, pos): | |
285 | del self.p.index[pos] |
|
287 | del self.p.index[pos] | |
286 | def insert(self, pos, e): |
|
288 | def insert(self, pos, e): | |
287 | self.p.index.insert(pos, _pack(indexformatng, *e)) |
|
289 | self.p.index.insert(pos, _pack(indexformatng, *e)) | |
288 | def append(self, e): |
|
290 | def append(self, e): | |
289 | self.p.index.append(_pack(indexformatng, *e)) |
|
291 | self.p.index.append(_pack(indexformatng, *e)) | |
290 |
|
292 | |||
291 | class lazymap(object): |
|
293 | class lazymap(object): | |
292 | """a lazy version of the node map""" |
|
294 | """a lazy version of the node map""" | |
293 | def __init__(self, parser): |
|
295 | def __init__(self, parser): | |
294 | self.p = parser |
|
296 | self.p = parser | |
295 | def load(self, key): |
|
297 | def load(self, key): | |
296 | n = self.p.findnode(key) |
|
298 | n = self.p.findnode(key) | |
297 | if n is None: |
|
299 | if n is None: | |
298 | raise KeyError(key) |
|
300 | raise KeyError(key) | |
299 | def __contains__(self, key): |
|
301 | def __contains__(self, key): | |
300 | if key in self.p.map: |
|
302 | if key in self.p.map: | |
301 | return True |
|
303 | return True | |
302 | self.p.loadmap() |
|
304 | self.p.loadmap() | |
303 | return key in self.p.map |
|
305 | return key in self.p.map | |
304 | def __iter__(self): |
|
306 | def __iter__(self): | |
305 | yield nullid |
|
307 | yield nullid | |
306 | for i, ret in enumerate(self.p.index): |
|
308 | for i, ret in enumerate(self.p.index): | |
307 | if not ret: |
|
309 | if not ret: | |
308 | self.p.loadindex(i) |
|
310 | self.p.loadindex(i) | |
309 | ret = self.p.index[i] |
|
311 | ret = self.p.index[i] | |
310 | if isinstance(ret, str): |
|
312 | if isinstance(ret, str): | |
311 | ret = _unpack(indexformatng, ret) |
|
313 | ret = _unpack(indexformatng, ret) | |
312 | yield ret[7] |
|
314 | yield ret[7] | |
313 | def __getitem__(self, key): |
|
315 | def __getitem__(self, key): | |
314 | try: |
|
316 | try: | |
315 | return self.p.map[key] |
|
317 | return self.p.map[key] | |
316 | except KeyError: |
|
318 | except KeyError: | |
317 | try: |
|
319 | try: | |
318 | self.load(key) |
|
320 | self.load(key) | |
319 | return self.p.map[key] |
|
321 | return self.p.map[key] | |
320 | except KeyError: |
|
322 | except KeyError: | |
321 | raise KeyError("node " + hex(key)) |
|
323 | raise KeyError("node " + hex(key)) | |
322 | def __setitem__(self, key, val): |
|
324 | def __setitem__(self, key, val): | |
323 | self.p.map[key] = val |
|
325 | self.p.map[key] = val | |
324 | def __delitem__(self, key): |
|
326 | def __delitem__(self, key): | |
325 | del self.p.map[key] |
|
327 | del self.p.map[key] | |
326 |
|
328 | |||
327 | indexformatv0 = ">4l20s20s20s" |
|
329 | indexformatv0 = ">4l20s20s20s" | |
328 | v0shaoffset = 56 |
|
330 | v0shaoffset = 56 | |
329 |
|
331 | |||
330 | class revlogoldio(object): |
|
332 | class revlogoldio(object): | |
331 | def __init__(self): |
|
333 | def __init__(self): | |
332 | self.size = struct.calcsize(indexformatv0) |
|
334 | self.size = struct.calcsize(indexformatv0) | |
333 |
|
335 | |||
334 | def parseindex(self, fp, data, inline): |
|
336 | def parseindex(self, fp, data, inline): | |
335 | s = self.size |
|
337 | s = self.size | |
336 | index = [] |
|
338 | index = [] | |
337 | nodemap = {nullid: nullrev} |
|
339 | nodemap = {nullid: nullrev} | |
338 | n = off = 0 |
|
340 | n = off = 0 | |
339 | if len(data) == _prereadsize: |
|
341 | if len(data) == _prereadsize: | |
340 | data += fp.read() # read the rest |
|
342 | data += fp.read() # read the rest | |
341 | l = len(data) |
|
343 | l = len(data) | |
342 | while off + s <= l: |
|
344 | while off + s <= l: | |
343 | cur = data[off:off + s] |
|
345 | cur = data[off:off + s] | |
344 | off += s |
|
346 | off += s | |
345 | e = _unpack(indexformatv0, cur) |
|
347 | e = _unpack(indexformatv0, cur) | |
346 | # transform to revlogv1 format |
|
348 | # transform to revlogv1 format | |
347 | e2 = (offset_type(e[0], 0), e[1], -1, e[2], e[3], |
|
349 | e2 = (offset_type(e[0], 0), e[1], -1, e[2], e[3], | |
348 | nodemap.get(e[4], nullrev), nodemap.get(e[5], nullrev), e[6]) |
|
350 | nodemap.get(e[4], nullrev), nodemap.get(e[5], nullrev), e[6]) | |
349 | index.append(e2) |
|
351 | index.append(e2) | |
350 | nodemap[e[6]] = n |
|
352 | nodemap[e[6]] = n | |
351 | n += 1 |
|
353 | n += 1 | |
352 |
|
354 | |||
353 | return index, nodemap, None |
|
355 | return index, nodemap, None | |
354 |
|
356 | |||
355 | def packentry(self, entry, node, version, rev): |
|
357 | def packentry(self, entry, node, version, rev): | |
356 | if gettype(entry[0]): |
|
358 | if gettype(entry[0]): | |
357 | raise RevlogError(_("index entry flags need RevlogNG")) |
|
359 | raise RevlogError(_("index entry flags need RevlogNG")) | |
358 | e2 = (getoffset(entry[0]), entry[1], entry[3], entry[4], |
|
360 | e2 = (getoffset(entry[0]), entry[1], entry[3], entry[4], | |
359 | node(entry[5]), node(entry[6]), entry[7]) |
|
361 | node(entry[5]), node(entry[6]), entry[7]) | |
360 | return _pack(indexformatv0, *e2) |
|
362 | return _pack(indexformatv0, *e2) | |
361 |
|
363 | |||
362 | # index ng: |
|
364 | # index ng: | |
363 | # 6 bytes: offset |
|
365 | # 6 bytes: offset | |
364 | # 2 bytes: flags |
|
366 | # 2 bytes: flags | |
365 | # 4 bytes: compressed length |
|
367 | # 4 bytes: compressed length | |
366 | # 4 bytes: uncompressed length |
|
368 | # 4 bytes: uncompressed length | |
367 | # 4 bytes: base rev |
|
369 | # 4 bytes: base rev | |
368 | # 4 bytes: link rev |
|
370 | # 4 bytes: link rev | |
369 | # 4 bytes: parent 1 rev |
|
371 | # 4 bytes: parent 1 rev | |
370 | # 4 bytes: parent 2 rev |
|
372 | # 4 bytes: parent 2 rev | |
371 | # 32 bytes: nodeid |
|
373 | # 32 bytes: nodeid | |
372 | indexformatng = ">Qiiiiii20s12x" |
|
374 | indexformatng = ">Qiiiiii20s12x" | |
373 | ngshaoffset = 32 |
|
375 | ngshaoffset = 32 | |
374 | versionformat = ">I" |
|
376 | versionformat = ">I" | |
375 |
|
377 | |||
376 | class revlogio(object): |
|
378 | class revlogio(object): | |
377 | def __init__(self): |
|
379 | def __init__(self): | |
378 | self.size = struct.calcsize(indexformatng) |
|
380 | self.size = struct.calcsize(indexformatng) | |
379 |
|
381 | |||
380 | def parseindex(self, fp, data, inline): |
|
382 | def parseindex(self, fp, data, inline): | |
381 | if len(data) == _prereadsize: |
|
383 | if len(data) == _prereadsize: | |
382 | if util.openhardlinks() and not inline: |
|
384 | if util.openhardlinks() and not inline: | |
383 | # big index, let's parse it on demand |
|
385 | # big index, let's parse it on demand | |
384 | parser = lazyparser(fp) |
|
386 | parser = lazyparser(fp) | |
385 | index = lazyindex(parser) |
|
387 | index = lazyindex(parser) | |
386 | nodemap = lazymap(parser) |
|
388 | nodemap = lazymap(parser) | |
387 | e = list(index[0]) |
|
389 | e = list(index[0]) | |
388 | type = gettype(e[0]) |
|
390 | type = gettype(e[0]) | |
389 | e[0] = offset_type(0, type) |
|
391 | e[0] = offset_type(0, type) | |
390 | index[0] = e |
|
392 | index[0] = e | |
391 | return index, nodemap, None |
|
393 | return index, nodemap, None | |
392 | else: |
|
394 | else: | |
393 | data += fp.read() |
|
395 | data += fp.read() | |
394 |
|
396 | |||
395 | # call the C implementation to parse the index data |
|
397 | # call the C implementation to parse the index data | |
396 | index, nodemap, cache = parsers.parse_index(data, inline) |
|
398 | index, nodemap, cache = parsers.parse_index(data, inline) | |
397 | return index, nodemap, cache |
|
399 | return index, nodemap, cache | |
398 |
|
400 | |||
399 | def packentry(self, entry, node, version, rev): |
|
401 | def packentry(self, entry, node, version, rev): | |
400 | p = _pack(indexformatng, *entry) |
|
402 | p = _pack(indexformatng, *entry) | |
401 | if rev == 0: |
|
403 | if rev == 0: | |
402 | p = _pack(versionformat, version) + p[4:] |
|
404 | p = _pack(versionformat, version) + p[4:] | |
403 | return p |
|
405 | return p | |
404 |
|
406 | |||
405 | class revlog(object): |
|
407 | class revlog(object): | |
406 | """ |
|
408 | """ | |
407 | the underlying revision storage object |
|
409 | the underlying revision storage object | |
408 |
|
410 | |||
409 | A revlog consists of two parts, an index and the revision data. |
|
411 | A revlog consists of two parts, an index and the revision data. | |
410 |
|
412 | |||
411 | The index is a file with a fixed record size containing |
|
413 | The index is a file with a fixed record size containing | |
412 | information on each revision, including its nodeid (hash), the |
|
414 | information on each revision, including its nodeid (hash), the | |
413 | nodeids of its parents, the position and offset of its data within |
|
415 | nodeids of its parents, the position and offset of its data within | |
414 | the data file, and the revision it's based on. Finally, each entry |
|
416 | the data file, and the revision it's based on. Finally, each entry | |
415 | contains a linkrev entry that can serve as a pointer to external |
|
417 | contains a linkrev entry that can serve as a pointer to external | |
416 | data. |
|
418 | data. | |
417 |
|
419 | |||
418 | The revision data itself is a linear collection of data chunks. |
|
420 | The revision data itself is a linear collection of data chunks. | |
419 | Each chunk represents a revision and is usually represented as a |
|
421 | Each chunk represents a revision and is usually represented as a | |
420 | delta against the previous chunk. To bound lookup time, runs of |
|
422 | delta against the previous chunk. To bound lookup time, runs of | |
421 | deltas are limited to about 2 times the length of the original |
|
423 | deltas are limited to about 2 times the length of the original | |
422 | version data. This makes retrieval of a version proportional to |
|
424 | version data. This makes retrieval of a version proportional to | |
423 | its size, or O(1) relative to the number of revisions. |
|
425 | its size, or O(1) relative to the number of revisions. | |
424 |
|
426 | |||
425 | Both pieces of the revlog are written to in an append-only |
|
427 | Both pieces of the revlog are written to in an append-only | |
426 | fashion, which means we never need to rewrite a file to insert or |
|
428 | fashion, which means we never need to rewrite a file to insert or | |
427 | remove data, and can use some simple techniques to avoid the need |
|
429 | remove data, and can use some simple techniques to avoid the need | |
428 | for locking while reading. |
|
430 | for locking while reading. | |
429 | """ |
|
431 | """ | |
430 | def __init__(self, opener, indexfile, shallowroot=None): |
|
432 | def __init__(self, opener, indexfile, shallowroot=None): | |
431 | """ |
|
433 | """ | |
432 | create a revlog object |
|
434 | create a revlog object | |
433 |
|
435 | |||
434 | opener is a function that abstracts the file opening operation |
|
436 | opener is a function that abstracts the file opening operation | |
435 | and can be used to implement COW semantics or the like. |
|
437 | and can be used to implement COW semantics or the like. | |
436 | """ |
|
438 | """ | |
437 | self.indexfile = indexfile |
|
439 | self.indexfile = indexfile | |
438 | self.datafile = indexfile[:-2] + ".d" |
|
440 | self.datafile = indexfile[:-2] + ".d" | |
439 | self.opener = opener |
|
441 | self.opener = opener | |
440 | self._cache = None |
|
442 | self._cache = None | |
441 | self._chunkcache = (0, '') |
|
443 | self._chunkcache = (0, '') | |
442 | self.nodemap = {nullid: nullrev} |
|
444 | self.nodemap = {nullid: nullrev} | |
443 | self.index = [] |
|
445 | self.index = [] | |
444 | self._shallowroot = shallowroot |
|
446 | self._shallowroot = shallowroot | |
445 | self._parentdelta = 0 |
|
447 | self._parentdelta = 0 | |
446 |
|
448 | |||
447 | v = REVLOG_DEFAULT_VERSION |
|
449 | v = REVLOG_DEFAULT_VERSION | |
448 | if hasattr(opener, 'options') and 'defversion' in opener.options: |
|
450 | if hasattr(opener, 'options') and 'defversion' in opener.options: | |
449 | v = opener.options['defversion'] |
|
451 | v = opener.options['defversion'] | |
450 | if v & REVLOGNG: |
|
452 | if v & REVLOGNG: | |
451 | v |= REVLOGNGINLINEDATA |
|
453 | v |= REVLOGNGINLINEDATA | |
452 | if v & REVLOGNG and 'parentdelta' in opener.options: |
|
454 | if v & REVLOGNG and 'parentdelta' in opener.options: | |
453 | self._parentdelta = 1 |
|
455 | self._parentdelta = 1 | |
454 |
|
456 | |||
455 | if shallowroot: |
|
457 | if shallowroot: | |
456 | v |= REVLOGSHALLOW |
|
458 | v |= REVLOGSHALLOW | |
457 |
|
459 | |||
458 | i = '' |
|
460 | i = '' | |
459 | try: |
|
461 | try: | |
460 | f = self.opener(self.indexfile) |
|
462 | f = self.opener(self.indexfile) | |
461 | if "nonlazy" in getattr(self.opener, 'options', {}): |
|
463 | if "nonlazy" in getattr(self.opener, 'options', {}): | |
462 | i = f.read() |
|
464 | i = f.read() | |
463 | else: |
|
465 | else: | |
464 | i = f.read(_prereadsize) |
|
466 | i = f.read(_prereadsize) | |
465 | if len(i) > 0: |
|
467 | if len(i) > 0: | |
466 | v = struct.unpack(versionformat, i[:4])[0] |
|
468 | v = struct.unpack(versionformat, i[:4])[0] | |
467 | except IOError, inst: |
|
469 | except IOError, inst: | |
468 | if inst.errno != errno.ENOENT: |
|
470 | if inst.errno != errno.ENOENT: | |
469 | raise |
|
471 | raise | |
470 |
|
472 | |||
471 | self.version = v |
|
473 | self.version = v | |
472 | self._inline = v & REVLOGNGINLINEDATA |
|
474 | self._inline = v & REVLOGNGINLINEDATA | |
473 | self._shallow = v & REVLOGSHALLOW |
|
475 | self._shallow = v & REVLOGSHALLOW | |
474 | flags = v & ~0xFFFF |
|
476 | flags = v & ~0xFFFF | |
475 | fmt = v & 0xFFFF |
|
477 | fmt = v & 0xFFFF | |
476 | if fmt == REVLOGV0 and flags: |
|
478 | if fmt == REVLOGV0 and flags: | |
477 | raise RevlogError(_("index %s unknown flags %#04x for format v0") |
|
479 | raise RevlogError(_("index %s unknown flags %#04x for format v0") | |
478 | % (self.indexfile, flags >> 16)) |
|
480 | % (self.indexfile, flags >> 16)) | |
479 | elif fmt == REVLOGNG and flags & ~REVLOGNG_FLAGS: |
|
481 | elif fmt == REVLOGNG and flags & ~REVLOGNG_FLAGS: | |
480 | raise RevlogError(_("index %s unknown flags %#04x for revlogng") |
|
482 | raise RevlogError(_("index %s unknown flags %#04x for revlogng") | |
481 | % (self.indexfile, flags >> 16)) |
|
483 | % (self.indexfile, flags >> 16)) | |
482 | elif fmt > REVLOGNG: |
|
484 | elif fmt > REVLOGNG: | |
483 | raise RevlogError(_("index %s unknown format %d") |
|
485 | raise RevlogError(_("index %s unknown format %d") | |
484 | % (self.indexfile, fmt)) |
|
486 | % (self.indexfile, fmt)) | |
485 |
|
487 | |||
486 | self._io = revlogio() |
|
488 | self._io = revlogio() | |
487 | if self.version == REVLOGV0: |
|
489 | if self.version == REVLOGV0: | |
488 | self._io = revlogoldio() |
|
490 | self._io = revlogoldio() | |
489 | if i: |
|
491 | if i: | |
490 | try: |
|
492 | try: | |
491 | d = self._io.parseindex(f, i, self._inline) |
|
493 | d = self._io.parseindex(f, i, self._inline) | |
492 | except (ValueError, IndexError): |
|
494 | except (ValueError, IndexError): | |
493 | raise RevlogError(_("index %s is corrupted") % (self.indexfile)) |
|
495 | raise RevlogError(_("index %s is corrupted") % (self.indexfile)) | |
494 | self.index, self.nodemap, self._chunkcache = d |
|
496 | self.index, self.nodemap, self._chunkcache = d | |
495 | if not self._chunkcache: |
|
497 | if not self._chunkcache: | |
496 | self._chunkclear() |
|
498 | self._chunkclear() | |
497 |
|
499 | |||
498 | # add the magic null revision at -1 (if it hasn't been done already) |
|
500 | # add the magic null revision at -1 (if it hasn't been done already) | |
499 | if (self.index == [] or isinstance(self.index, lazyindex) or |
|
501 | if (self.index == [] or isinstance(self.index, lazyindex) or | |
500 | self.index[-1][7] != nullid) : |
|
502 | self.index[-1][7] != nullid) : | |
501 | self.index.append((0, 0, 0, -1, -1, -1, -1, nullid)) |
|
503 | self.index.append((0, 0, 0, -1, -1, -1, -1, nullid)) | |
502 |
|
504 | |||
503 | def _loadindex(self, start, end): |
|
505 | def _loadindex(self, start, end): | |
504 | """load a block of indexes all at once from the lazy parser""" |
|
506 | """load a block of indexes all at once from the lazy parser""" | |
505 | if isinstance(self.index, lazyindex): |
|
507 | if isinstance(self.index, lazyindex): | |
506 | self.index.p.loadindex(start, end) |
|
508 | self.index.p.loadindex(start, end) | |
507 |
|
509 | |||
508 | def _loadindexmap(self): |
|
510 | def _loadindexmap(self): | |
509 | """loads both the map and the index from the lazy parser""" |
|
511 | """loads both the map and the index from the lazy parser""" | |
510 | if isinstance(self.index, lazyindex): |
|
512 | if isinstance(self.index, lazyindex): | |
511 | p = self.index.p |
|
513 | p = self.index.p | |
512 | p.loadindex() |
|
514 | p.loadindex() | |
513 | self.nodemap = p.map |
|
515 | self.nodemap = p.map | |
514 |
|
516 | |||
515 | def _loadmap(self): |
|
517 | def _loadmap(self): | |
516 | """loads the map from the lazy parser""" |
|
518 | """loads the map from the lazy parser""" | |
517 | if isinstance(self.nodemap, lazymap): |
|
519 | if isinstance(self.nodemap, lazymap): | |
518 | self.nodemap.p.loadmap() |
|
520 | self.nodemap.p.loadmap() | |
519 | self.nodemap = self.nodemap.p.map |
|
521 | self.nodemap = self.nodemap.p.map | |
520 |
|
522 | |||
521 | def tip(self): |
|
523 | def tip(self): | |
522 | return self.node(len(self.index) - 2) |
|
524 | return self.node(len(self.index) - 2) | |
523 | def __len__(self): |
|
525 | def __len__(self): | |
524 | return len(self.index) - 1 |
|
526 | return len(self.index) - 1 | |
525 | def __iter__(self): |
|
527 | def __iter__(self): | |
526 | for i in xrange(len(self)): |
|
528 | for i in xrange(len(self)): | |
527 | yield i |
|
529 | yield i | |
528 | def rev(self, node): |
|
530 | def rev(self, node): | |
529 | try: |
|
531 | try: | |
530 | return self.nodemap[node] |
|
532 | return self.nodemap[node] | |
531 | except KeyError: |
|
533 | except KeyError: | |
532 | raise LookupError(node, self.indexfile, _('no node')) |
|
534 | raise LookupError(node, self.indexfile, _('no node')) | |
533 | def node(self, rev): |
|
535 | def node(self, rev): | |
534 | return self.index[rev][7] |
|
536 | return self.index[rev][7] | |
535 | def linkrev(self, rev): |
|
537 | def linkrev(self, rev): | |
536 | return self.index[rev][4] |
|
538 | return self.index[rev][4] | |
537 | def parents(self, node): |
|
539 | def parents(self, node): | |
538 | i = self.index |
|
540 | i = self.index | |
539 | d = i[self.rev(node)] |
|
541 | d = i[self.rev(node)] | |
540 | return i[d[5]][7], i[d[6]][7] # map revisions to nodes inline |
|
542 | return i[d[5]][7], i[d[6]][7] # map revisions to nodes inline | |
541 | def parentrevs(self, rev): |
|
543 | def parentrevs(self, rev): | |
542 | return self.index[rev][5:7] |
|
544 | return self.index[rev][5:7] | |
543 | def start(self, rev): |
|
545 | def start(self, rev): | |
544 | return int(self.index[rev][0] >> 16) |
|
546 | return int(self.index[rev][0] >> 16) | |
545 | def end(self, rev): |
|
547 | def end(self, rev): | |
546 | return self.start(rev) + self.length(rev) |
|
548 | return self.start(rev) + self.length(rev) | |
547 | def length(self, rev): |
|
549 | def length(self, rev): | |
548 | return self.index[rev][1] |
|
550 | return self.index[rev][1] | |
549 | def base(self, rev): |
|
551 | def base(self, rev): | |
550 | return self.index[rev][3] |
|
552 | return self.index[rev][3] | |
551 | def flags(self, rev): |
|
553 | def flags(self, rev): | |
552 | return self.index[rev][0] & 0xFFFF |
|
554 | return self.index[rev][0] & 0xFFFF | |
553 |
|
555 | |||
554 | def size(self, rev): |
|
556 | def size(self, rev): | |
555 | """return the length of the uncompressed text for a given revision""" |
|
557 | """return the length of the uncompressed text for a given revision""" | |
556 | l = self.index[rev][2] |
|
558 | l = self.index[rev][2] | |
557 | if l >= 0: |
|
559 | if l >= 0: | |
558 | return l |
|
560 | return l | |
559 |
|
561 | |||
560 | t = self.revision(self.node(rev)) |
|
562 | t = self.revision(self.node(rev)) | |
561 | return len(t) |
|
563 | return len(t) | |
562 |
|
564 | |||
563 | def reachable(self, node, stop=None): |
|
565 | def reachable(self, node, stop=None): | |
564 | """return the set of all nodes ancestral to a given node, including |
|
566 | """return the set of all nodes ancestral to a given node, including | |
565 | the node itself, stopping when stop is matched""" |
|
567 | the node itself, stopping when stop is matched""" | |
566 | reachable = set((node,)) |
|
568 | reachable = set((node,)) | |
567 | visit = [node] |
|
569 | visit = [node] | |
568 | if stop: |
|
570 | if stop: | |
569 | stopn = self.rev(stop) |
|
571 | stopn = self.rev(stop) | |
570 | else: |
|
572 | else: | |
571 | stopn = 0 |
|
573 | stopn = 0 | |
572 | while visit: |
|
574 | while visit: | |
573 | n = visit.pop(0) |
|
575 | n = visit.pop(0) | |
574 | if n == stop: |
|
576 | if n == stop: | |
575 | continue |
|
577 | continue | |
576 | if n == nullid: |
|
578 | if n == nullid: | |
577 | continue |
|
579 | continue | |
578 | for p in self.parents(n): |
|
580 | for p in self.parents(n): | |
579 | if self.rev(p) < stopn: |
|
581 | if self.rev(p) < stopn: | |
580 | continue |
|
582 | continue | |
581 | if p not in reachable: |
|
583 | if p not in reachable: | |
582 | reachable.add(p) |
|
584 | reachable.add(p) | |
583 | visit.append(p) |
|
585 | visit.append(p) | |
584 | return reachable |
|
586 | return reachable | |
585 |
|
587 | |||
586 | def ancestors(self, *revs): |
|
588 | def ancestors(self, *revs): | |
587 | """Generate the ancestors of 'revs' in reverse topological order. |
|
589 | """Generate the ancestors of 'revs' in reverse topological order. | |
588 |
|
590 | |||
589 | Yield a sequence of revision numbers starting with the parents |
|
591 | Yield a sequence of revision numbers starting with the parents | |
590 | of each revision in revs, i.e., each revision is *not* considered |
|
592 | of each revision in revs, i.e., each revision is *not* considered | |
591 | an ancestor of itself. Results are in breadth-first order: |
|
593 | an ancestor of itself. Results are in breadth-first order: | |
592 | parents of each rev in revs, then parents of those, etc. Result |
|
594 | parents of each rev in revs, then parents of those, etc. Result | |
593 | does not include the null revision.""" |
|
595 | does not include the null revision.""" | |
594 | visit = list(revs) |
|
596 | visit = list(revs) | |
595 | seen = set([nullrev]) |
|
597 | seen = set([nullrev]) | |
596 | while visit: |
|
598 | while visit: | |
597 | for parent in self.parentrevs(visit.pop(0)): |
|
599 | for parent in self.parentrevs(visit.pop(0)): | |
598 | if parent not in seen: |
|
600 | if parent not in seen: | |
599 | visit.append(parent) |
|
601 | visit.append(parent) | |
600 | seen.add(parent) |
|
602 | seen.add(parent) | |
601 | yield parent |
|
603 | yield parent | |
602 |
|
604 | |||
603 | def descendants(self, *revs): |
|
605 | def descendants(self, *revs): | |
604 | """Generate the descendants of 'revs' in revision order. |
|
606 | """Generate the descendants of 'revs' in revision order. | |
605 |
|
607 | |||
606 | Yield a sequence of revision numbers starting with a child of |
|
608 | Yield a sequence of revision numbers starting with a child of | |
607 | some rev in revs, i.e., each revision is *not* considered a |
|
609 | some rev in revs, i.e., each revision is *not* considered a | |
608 | descendant of itself. Results are ordered by revision number (a |
|
610 | descendant of itself. Results are ordered by revision number (a | |
609 | topological sort).""" |
|
611 | topological sort).""" | |
610 | seen = set(revs) |
|
612 | seen = set(revs) | |
611 | for i in xrange(min(revs) + 1, len(self)): |
|
613 | for i in xrange(min(revs) + 1, len(self)): | |
612 | for x in self.parentrevs(i): |
|
614 | for x in self.parentrevs(i): | |
613 | if x != nullrev and x in seen: |
|
615 | if x != nullrev and x in seen: | |
614 | seen.add(i) |
|
616 | seen.add(i) | |
615 | yield i |
|
617 | yield i | |
616 | break |
|
618 | break | |
617 |
|
619 | |||
618 | def findmissing(self, common=None, heads=None): |
|
620 | def findmissing(self, common=None, heads=None): | |
619 | """Return the ancestors of heads that are not ancestors of common. |
|
621 | """Return the ancestors of heads that are not ancestors of common. | |
620 |
|
622 | |||
621 | More specifically, return a list of nodes N such that every N |
|
623 | More specifically, return a list of nodes N such that every N | |
622 | satisfies the following constraints: |
|
624 | satisfies the following constraints: | |
623 |
|
625 | |||
624 | 1. N is an ancestor of some node in 'heads' |
|
626 | 1. N is an ancestor of some node in 'heads' | |
625 | 2. N is not an ancestor of any node in 'common' |
|
627 | 2. N is not an ancestor of any node in 'common' | |
626 |
|
628 | |||
627 | The list is sorted by revision number, meaning it is |
|
629 | The list is sorted by revision number, meaning it is | |
628 | topologically sorted. |
|
630 | topologically sorted. | |
629 |
|
631 | |||
630 | 'heads' and 'common' are both lists of node IDs. If heads is |
|
632 | 'heads' and 'common' are both lists of node IDs. If heads is | |
631 | not supplied, uses all of the revlog's heads. If common is not |
|
633 | not supplied, uses all of the revlog's heads. If common is not | |
632 | supplied, uses nullid.""" |
|
634 | supplied, uses nullid.""" | |
633 | if common is None: |
|
635 | if common is None: | |
634 | common = [nullid] |
|
636 | common = [nullid] | |
635 | if heads is None: |
|
637 | if heads is None: | |
636 | heads = self.heads() |
|
638 | heads = self.heads() | |
637 |
|
639 | |||
638 | common = [self.rev(n) for n in common] |
|
640 | common = [self.rev(n) for n in common] | |
639 | heads = [self.rev(n) for n in heads] |
|
641 | heads = [self.rev(n) for n in heads] | |
640 |
|
642 | |||
641 | # we want the ancestors, but inclusive |
|
643 | # we want the ancestors, but inclusive | |
642 | has = set(self.ancestors(*common)) |
|
644 | has = set(self.ancestors(*common)) | |
643 | has.add(nullrev) |
|
645 | has.add(nullrev) | |
644 | has.update(common) |
|
646 | has.update(common) | |
645 |
|
647 | |||
646 | # take all ancestors from heads that aren't in has |
|
648 | # take all ancestors from heads that aren't in has | |
647 | missing = set() |
|
649 | missing = set() | |
648 | visit = [r for r in heads if r not in has] |
|
650 | visit = [r for r in heads if r not in has] | |
649 | while visit: |
|
651 | while visit: | |
650 | r = visit.pop(0) |
|
652 | r = visit.pop(0) | |
651 | if r in missing: |
|
653 | if r in missing: | |
652 | continue |
|
654 | continue | |
653 | else: |
|
655 | else: | |
654 | missing.add(r) |
|
656 | missing.add(r) | |
655 | for p in self.parentrevs(r): |
|
657 | for p in self.parentrevs(r): | |
656 | if p not in has: |
|
658 | if p not in has: | |
657 | visit.append(p) |
|
659 | visit.append(p) | |
658 | missing = list(missing) |
|
660 | missing = list(missing) | |
659 | missing.sort() |
|
661 | missing.sort() | |
660 | return [self.node(r) for r in missing] |
|
662 | return [self.node(r) for r in missing] | |
661 |
|
663 | |||
662 | def nodesbetween(self, roots=None, heads=None): |
|
664 | def nodesbetween(self, roots=None, heads=None): | |
663 | """Return a topological path from 'roots' to 'heads'. |
|
665 | """Return a topological path from 'roots' to 'heads'. | |
664 |
|
666 | |||
665 | Return a tuple (nodes, outroots, outheads) where 'nodes' is a |
|
667 | Return a tuple (nodes, outroots, outheads) where 'nodes' is a | |
666 | topologically sorted list of all nodes N that satisfy both of |
|
668 | topologically sorted list of all nodes N that satisfy both of | |
667 | these constraints: |
|
669 | these constraints: | |
668 |
|
670 | |||
669 | 1. N is a descendant of some node in 'roots' |
|
671 | 1. N is a descendant of some node in 'roots' | |
670 | 2. N is an ancestor of some node in 'heads' |
|
672 | 2. N is an ancestor of some node in 'heads' | |
671 |
|
673 | |||
672 | Every node is considered to be both a descendant and an ancestor |
|
674 | Every node is considered to be both a descendant and an ancestor | |
673 | of itself, so every reachable node in 'roots' and 'heads' will be |
|
675 | of itself, so every reachable node in 'roots' and 'heads' will be | |
674 | included in 'nodes'. |
|
676 | included in 'nodes'. | |
675 |
|
677 | |||
676 | 'outroots' is the list of reachable nodes in 'roots', i.e., the |
|
678 | 'outroots' is the list of reachable nodes in 'roots', i.e., the | |
677 | subset of 'roots' that is returned in 'nodes'. Likewise, |
|
679 | subset of 'roots' that is returned in 'nodes'. Likewise, | |
678 | 'outheads' is the subset of 'heads' that is also in 'nodes'. |
|
680 | 'outheads' is the subset of 'heads' that is also in 'nodes'. | |
679 |
|
681 | |||
680 | 'roots' and 'heads' are both lists of node IDs. If 'roots' is |
|
682 | 'roots' and 'heads' are both lists of node IDs. If 'roots' is | |
681 | unspecified, uses nullid as the only root. If 'heads' is |
|
683 | unspecified, uses nullid as the only root. If 'heads' is | |
682 | unspecified, uses list of all of the revlog's heads.""" |
|
684 | unspecified, uses list of all of the revlog's heads.""" | |
683 | nonodes = ([], [], []) |
|
685 | nonodes = ([], [], []) | |
684 | if roots is not None: |
|
686 | if roots is not None: | |
685 | roots = list(roots) |
|
687 | roots = list(roots) | |
686 | if not roots: |
|
688 | if not roots: | |
687 | return nonodes |
|
689 | return nonodes | |
688 | lowestrev = min([self.rev(n) for n in roots]) |
|
690 | lowestrev = min([self.rev(n) for n in roots]) | |
689 | else: |
|
691 | else: | |
690 | roots = [nullid] # Everybody's a descendent of nullid |
|
692 | roots = [nullid] # Everybody's a descendent of nullid | |
691 | lowestrev = nullrev |
|
693 | lowestrev = nullrev | |
692 | if (lowestrev == nullrev) and (heads is None): |
|
694 | if (lowestrev == nullrev) and (heads is None): | |
693 | # We want _all_ the nodes! |
|
695 | # We want _all_ the nodes! | |
694 | return ([self.node(r) for r in self], [nullid], list(self.heads())) |
|
696 | return ([self.node(r) for r in self], [nullid], list(self.heads())) | |
695 | if heads is None: |
|
697 | if heads is None: | |
696 | # All nodes are ancestors, so the latest ancestor is the last |
|
698 | # All nodes are ancestors, so the latest ancestor is the last | |
697 | # node. |
|
699 | # node. | |
698 | highestrev = len(self) - 1 |
|
700 | highestrev = len(self) - 1 | |
699 | # Set ancestors to None to signal that every node is an ancestor. |
|
701 | # Set ancestors to None to signal that every node is an ancestor. | |
700 | ancestors = None |
|
702 | ancestors = None | |
701 | # Set heads to an empty dictionary for later discovery of heads |
|
703 | # Set heads to an empty dictionary for later discovery of heads | |
702 | heads = {} |
|
704 | heads = {} | |
703 | else: |
|
705 | else: | |
704 | heads = list(heads) |
|
706 | heads = list(heads) | |
705 | if not heads: |
|
707 | if not heads: | |
706 | return nonodes |
|
708 | return nonodes | |
707 | ancestors = set() |
|
709 | ancestors = set() | |
708 | # Turn heads into a dictionary so we can remove 'fake' heads. |
|
710 | # Turn heads into a dictionary so we can remove 'fake' heads. | |
709 | # Also, later we will be using it to filter out the heads we can't |
|
711 | # Also, later we will be using it to filter out the heads we can't | |
710 | # find from roots. |
|
712 | # find from roots. | |
711 | heads = dict.fromkeys(heads, 0) |
|
713 | heads = dict.fromkeys(heads, 0) | |
712 | # Start at the top and keep marking parents until we're done. |
|
714 | # Start at the top and keep marking parents until we're done. | |
713 | nodestotag = set(heads) |
|
715 | nodestotag = set(heads) | |
714 | # Remember where the top was so we can use it as a limit later. |
|
716 | # Remember where the top was so we can use it as a limit later. | |
715 | highestrev = max([self.rev(n) for n in nodestotag]) |
|
717 | highestrev = max([self.rev(n) for n in nodestotag]) | |
716 | while nodestotag: |
|
718 | while nodestotag: | |
717 | # grab a node to tag |
|
719 | # grab a node to tag | |
718 | n = nodestotag.pop() |
|
720 | n = nodestotag.pop() | |
719 | # Never tag nullid |
|
721 | # Never tag nullid | |
720 | if n == nullid: |
|
722 | if n == nullid: | |
721 | continue |
|
723 | continue | |
722 | # A node's revision number represents its place in a |
|
724 | # A node's revision number represents its place in a | |
723 | # topologically sorted list of nodes. |
|
725 | # topologically sorted list of nodes. | |
724 | r = self.rev(n) |
|
726 | r = self.rev(n) | |
725 | if r >= lowestrev: |
|
727 | if r >= lowestrev: | |
726 | if n not in ancestors: |
|
728 | if n not in ancestors: | |
727 | # If we are possibly a descendent of one of the roots |
|
729 | # If we are possibly a descendent of one of the roots | |
728 | # and we haven't already been marked as an ancestor |
|
730 | # and we haven't already been marked as an ancestor | |
729 | ancestors.add(n) # Mark as ancestor |
|
731 | ancestors.add(n) # Mark as ancestor | |
730 | # Add non-nullid parents to list of nodes to tag. |
|
732 | # Add non-nullid parents to list of nodes to tag. | |
731 | nodestotag.update([p for p in self.parents(n) if |
|
733 | nodestotag.update([p for p in self.parents(n) if | |
732 | p != nullid]) |
|
734 | p != nullid]) | |
733 | elif n in heads: # We've seen it before, is it a fake head? |
|
735 | elif n in heads: # We've seen it before, is it a fake head? | |
734 | # So it is, real heads should not be the ancestors of |
|
736 | # So it is, real heads should not be the ancestors of | |
735 | # any other heads. |
|
737 | # any other heads. | |
736 | heads.pop(n) |
|
738 | heads.pop(n) | |
737 | if not ancestors: |
|
739 | if not ancestors: | |
738 | return nonodes |
|
740 | return nonodes | |
739 | # Now that we have our set of ancestors, we want to remove any |
|
741 | # Now that we have our set of ancestors, we want to remove any | |
740 | # roots that are not ancestors. |
|
742 | # roots that are not ancestors. | |
741 |
|
743 | |||
742 | # If one of the roots was nullid, everything is included anyway. |
|
744 | # If one of the roots was nullid, everything is included anyway. | |
743 | if lowestrev > nullrev: |
|
745 | if lowestrev > nullrev: | |
744 | # But, since we weren't, let's recompute the lowest rev to not |
|
746 | # But, since we weren't, let's recompute the lowest rev to not | |
745 | # include roots that aren't ancestors. |
|
747 | # include roots that aren't ancestors. | |
746 |
|
748 | |||
747 | # Filter out roots that aren't ancestors of heads |
|
749 | # Filter out roots that aren't ancestors of heads | |
748 | roots = [n for n in roots if n in ancestors] |
|
750 | roots = [n for n in roots if n in ancestors] | |
749 | # Recompute the lowest revision |
|
751 | # Recompute the lowest revision | |
750 | if roots: |
|
752 | if roots: | |
751 | lowestrev = min([self.rev(n) for n in roots]) |
|
753 | lowestrev = min([self.rev(n) for n in roots]) | |
752 | else: |
|
754 | else: | |
753 | # No more roots? Return empty list |
|
755 | # No more roots? Return empty list | |
754 | return nonodes |
|
756 | return nonodes | |
755 | else: |
|
757 | else: | |
756 | # We are descending from nullid, and don't need to care about |
|
758 | # We are descending from nullid, and don't need to care about | |
757 | # any other roots. |
|
759 | # any other roots. | |
758 | lowestrev = nullrev |
|
760 | lowestrev = nullrev | |
759 | roots = [nullid] |
|
761 | roots = [nullid] | |
760 | # Transform our roots list into a set. |
|
762 | # Transform our roots list into a set. | |
761 | descendents = set(roots) |
|
763 | descendents = set(roots) | |
762 | # Also, keep the original roots so we can filter out roots that aren't |
|
764 | # Also, keep the original roots so we can filter out roots that aren't | |
763 | # 'real' roots (i.e. are descended from other roots). |
|
765 | # 'real' roots (i.e. are descended from other roots). | |
764 | roots = descendents.copy() |
|
766 | roots = descendents.copy() | |
765 | # Our topologically sorted list of output nodes. |
|
767 | # Our topologically sorted list of output nodes. | |
766 | orderedout = [] |
|
768 | orderedout = [] | |
767 | # Don't start at nullid since we don't want nullid in our output list, |
|
769 | # Don't start at nullid since we don't want nullid in our output list, | |
768 | # and if nullid shows up in descedents, empty parents will look like |
|
770 | # and if nullid shows up in descedents, empty parents will look like | |
769 | # they're descendents. |
|
771 | # they're descendents. | |
770 | for r in xrange(max(lowestrev, 0), highestrev + 1): |
|
772 | for r in xrange(max(lowestrev, 0), highestrev + 1): | |
771 | n = self.node(r) |
|
773 | n = self.node(r) | |
772 | isdescendent = False |
|
774 | isdescendent = False | |
773 | if lowestrev == nullrev: # Everybody is a descendent of nullid |
|
775 | if lowestrev == nullrev: # Everybody is a descendent of nullid | |
774 | isdescendent = True |
|
776 | isdescendent = True | |
775 | elif n in descendents: |
|
777 | elif n in descendents: | |
776 | # n is already a descendent |
|
778 | # n is already a descendent | |
777 | isdescendent = True |
|
779 | isdescendent = True | |
778 | # This check only needs to be done here because all the roots |
|
780 | # This check only needs to be done here because all the roots | |
779 | # will start being marked is descendents before the loop. |
|
781 | # will start being marked is descendents before the loop. | |
780 | if n in roots: |
|
782 | if n in roots: | |
781 | # If n was a root, check if it's a 'real' root. |
|
783 | # If n was a root, check if it's a 'real' root. | |
782 | p = tuple(self.parents(n)) |
|
784 | p = tuple(self.parents(n)) | |
783 | # If any of its parents are descendents, it's not a root. |
|
785 | # If any of its parents are descendents, it's not a root. | |
784 | if (p[0] in descendents) or (p[1] in descendents): |
|
786 | if (p[0] in descendents) or (p[1] in descendents): | |
785 | roots.remove(n) |
|
787 | roots.remove(n) | |
786 | else: |
|
788 | else: | |
787 | p = tuple(self.parents(n)) |
|
789 | p = tuple(self.parents(n)) | |
788 | # A node is a descendent if either of its parents are |
|
790 | # A node is a descendent if either of its parents are | |
789 | # descendents. (We seeded the dependents list with the roots |
|
791 | # descendents. (We seeded the dependents list with the roots | |
790 | # up there, remember?) |
|
792 | # up there, remember?) | |
791 | if (p[0] in descendents) or (p[1] in descendents): |
|
793 | if (p[0] in descendents) or (p[1] in descendents): | |
792 | descendents.add(n) |
|
794 | descendents.add(n) | |
793 | isdescendent = True |
|
795 | isdescendent = True | |
794 | if isdescendent and ((ancestors is None) or (n in ancestors)): |
|
796 | if isdescendent and ((ancestors is None) or (n in ancestors)): | |
795 | # Only include nodes that are both descendents and ancestors. |
|
797 | # Only include nodes that are both descendents and ancestors. | |
796 | orderedout.append(n) |
|
798 | orderedout.append(n) | |
797 | if (ancestors is not None) and (n in heads): |
|
799 | if (ancestors is not None) and (n in heads): | |
798 | # We're trying to figure out which heads are reachable |
|
800 | # We're trying to figure out which heads are reachable | |
799 | # from roots. |
|
801 | # from roots. | |
800 | # Mark this head as having been reached |
|
802 | # Mark this head as having been reached | |
801 | heads[n] = 1 |
|
803 | heads[n] = 1 | |
802 | elif ancestors is None: |
|
804 | elif ancestors is None: | |
803 | # Otherwise, we're trying to discover the heads. |
|
805 | # Otherwise, we're trying to discover the heads. | |
804 | # Assume this is a head because if it isn't, the next step |
|
806 | # Assume this is a head because if it isn't, the next step | |
805 | # will eventually remove it. |
|
807 | # will eventually remove it. | |
806 | heads[n] = 1 |
|
808 | heads[n] = 1 | |
807 | # But, obviously its parents aren't. |
|
809 | # But, obviously its parents aren't. | |
808 | for p in self.parents(n): |
|
810 | for p in self.parents(n): | |
809 | heads.pop(p, None) |
|
811 | heads.pop(p, None) | |
810 | heads = [n for n in heads.iterkeys() if heads[n] != 0] |
|
812 | heads = [n for n in heads.iterkeys() if heads[n] != 0] | |
811 | roots = list(roots) |
|
813 | roots = list(roots) | |
812 | assert orderedout |
|
814 | assert orderedout | |
813 | assert roots |
|
815 | assert roots | |
814 | assert heads |
|
816 | assert heads | |
815 | return (orderedout, roots, heads) |
|
817 | return (orderedout, roots, heads) | |
816 |
|
818 | |||
817 | def heads(self, start=None, stop=None): |
|
819 | def heads(self, start=None, stop=None): | |
818 | """return the list of all nodes that have no children |
|
820 | """return the list of all nodes that have no children | |
819 |
|
821 | |||
820 | if start is specified, only heads that are descendants of |
|
822 | if start is specified, only heads that are descendants of | |
821 | start will be returned |
|
823 | start will be returned | |
822 | if stop is specified, it will consider all the revs from stop |
|
824 | if stop is specified, it will consider all the revs from stop | |
823 | as if they had no children |
|
825 | as if they had no children | |
824 | """ |
|
826 | """ | |
825 | if start is None and stop is None: |
|
827 | if start is None and stop is None: | |
826 | count = len(self) |
|
828 | count = len(self) | |
827 | if not count: |
|
829 | if not count: | |
828 | return [nullid] |
|
830 | return [nullid] | |
829 | ishead = [1] * (count + 1) |
|
831 | ishead = [1] * (count + 1) | |
830 | index = self.index |
|
832 | index = self.index | |
831 | for r in xrange(count): |
|
833 | for r in xrange(count): | |
832 | e = index[r] |
|
834 | e = index[r] | |
833 | ishead[e[5]] = ishead[e[6]] = 0 |
|
835 | ishead[e[5]] = ishead[e[6]] = 0 | |
834 | return [self.node(r) for r in xrange(count) if ishead[r]] |
|
836 | return [self.node(r) for r in xrange(count) if ishead[r]] | |
835 |
|
837 | |||
836 | if start is None: |
|
838 | if start is None: | |
837 | start = nullid |
|
839 | start = nullid | |
838 | if stop is None: |
|
840 | if stop is None: | |
839 | stop = [] |
|
841 | stop = [] | |
840 | stoprevs = set([self.rev(n) for n in stop]) |
|
842 | stoprevs = set([self.rev(n) for n in stop]) | |
841 | startrev = self.rev(start) |
|
843 | startrev = self.rev(start) | |
842 | reachable = set((startrev,)) |
|
844 | reachable = set((startrev,)) | |
843 | heads = set((startrev,)) |
|
845 | heads = set((startrev,)) | |
844 |
|
846 | |||
845 | parentrevs = self.parentrevs |
|
847 | parentrevs = self.parentrevs | |
846 | for r in xrange(startrev + 1, len(self)): |
|
848 | for r in xrange(startrev + 1, len(self)): | |
847 | for p in parentrevs(r): |
|
849 | for p in parentrevs(r): | |
848 | if p in reachable: |
|
850 | if p in reachable: | |
849 | if r not in stoprevs: |
|
851 | if r not in stoprevs: | |
850 | reachable.add(r) |
|
852 | reachable.add(r) | |
851 | heads.add(r) |
|
853 | heads.add(r) | |
852 | if p in heads and p not in stoprevs: |
|
854 | if p in heads and p not in stoprevs: | |
853 | heads.remove(p) |
|
855 | heads.remove(p) | |
854 |
|
856 | |||
855 | return [self.node(r) for r in heads] |
|
857 | return [self.node(r) for r in heads] | |
856 |
|
858 | |||
857 | def children(self, node): |
|
859 | def children(self, node): | |
858 | """find the children of a given node""" |
|
860 | """find the children of a given node""" | |
859 | c = [] |
|
861 | c = [] | |
860 | p = self.rev(node) |
|
862 | p = self.rev(node) | |
861 | for r in range(p + 1, len(self)): |
|
863 | for r in range(p + 1, len(self)): | |
862 | prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] |
|
864 | prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] | |
863 | if prevs: |
|
865 | if prevs: | |
864 | for pr in prevs: |
|
866 | for pr in prevs: | |
865 | if pr == p: |
|
867 | if pr == p: | |
866 | c.append(self.node(r)) |
|
868 | c.append(self.node(r)) | |
867 | elif p == nullrev: |
|
869 | elif p == nullrev: | |
868 | c.append(self.node(r)) |
|
870 | c.append(self.node(r)) | |
869 | return c |
|
871 | return c | |
870 |
|
872 | |||
871 | def descendant(self, start, end): |
|
873 | def descendant(self, start, end): | |
872 | for i in self.descendants(start): |
|
874 | for i in self.descendants(start): | |
873 | if i == end: |
|
875 | if i == end: | |
874 | return True |
|
876 | return True | |
875 | elif i > end: |
|
877 | elif i > end: | |
876 | break |
|
878 | break | |
877 | return False |
|
879 | return False | |
878 |
|
880 | |||
879 | def ancestor(self, a, b): |
|
881 | def ancestor(self, a, b): | |
880 | """calculate the least common ancestor of nodes a and b""" |
|
882 | """calculate the least common ancestor of nodes a and b""" | |
881 |
|
883 | |||
882 | # fast path, check if it is a descendant |
|
884 | # fast path, check if it is a descendant | |
883 | a, b = self.rev(a), self.rev(b) |
|
885 | a, b = self.rev(a), self.rev(b) | |
884 | start, end = sorted((a, b)) |
|
886 | start, end = sorted((a, b)) | |
885 | if self.descendant(start, end): |
|
887 | if self.descendant(start, end): | |
886 | return self.node(start) |
|
888 | return self.node(start) | |
887 |
|
889 | |||
888 | def parents(rev): |
|
890 | def parents(rev): | |
889 | return [p for p in self.parentrevs(rev) if p != nullrev] |
|
891 | return [p for p in self.parentrevs(rev) if p != nullrev] | |
890 |
|
892 | |||
891 | c = ancestor.ancestor(a, b, parents) |
|
893 | c = ancestor.ancestor(a, b, parents) | |
892 | if c is None: |
|
894 | if c is None: | |
893 | return nullid |
|
895 | return nullid | |
894 |
|
896 | |||
895 | return self.node(c) |
|
897 | return self.node(c) | |
896 |
|
898 | |||
897 | def _match(self, id): |
|
899 | def _match(self, id): | |
898 | if isinstance(id, (long, int)): |
|
900 | if isinstance(id, (long, int)): | |
899 | # rev |
|
901 | # rev | |
900 | return self.node(id) |
|
902 | return self.node(id) | |
901 | if len(id) == 20: |
|
903 | if len(id) == 20: | |
902 | # possibly a binary node |
|
904 | # possibly a binary node | |
903 | # odds of a binary node being all hex in ASCII are 1 in 10**25 |
|
905 | # odds of a binary node being all hex in ASCII are 1 in 10**25 | |
904 | try: |
|
906 | try: | |
905 | node = id |
|
907 | node = id | |
906 | self.rev(node) # quick search the index |
|
908 | self.rev(node) # quick search the index | |
907 | return node |
|
909 | return node | |
908 | except LookupError: |
|
910 | except LookupError: | |
909 | pass # may be partial hex id |
|
911 | pass # may be partial hex id | |
910 | try: |
|
912 | try: | |
911 | # str(rev) |
|
913 | # str(rev) | |
912 | rev = int(id) |
|
914 | rev = int(id) | |
913 | if str(rev) != id: |
|
915 | if str(rev) != id: | |
914 | raise ValueError |
|
916 | raise ValueError | |
915 | if rev < 0: |
|
917 | if rev < 0: | |
916 | rev = len(self) + rev |
|
918 | rev = len(self) + rev | |
917 | if rev < 0 or rev >= len(self): |
|
919 | if rev < 0 or rev >= len(self): | |
918 | raise ValueError |
|
920 | raise ValueError | |
919 | return self.node(rev) |
|
921 | return self.node(rev) | |
920 | except (ValueError, OverflowError): |
|
922 | except (ValueError, OverflowError): | |
921 | pass |
|
923 | pass | |
922 | if len(id) == 40: |
|
924 | if len(id) == 40: | |
923 | try: |
|
925 | try: | |
924 | # a full hex nodeid? |
|
926 | # a full hex nodeid? | |
925 | node = bin(id) |
|
927 | node = bin(id) | |
926 | self.rev(node) |
|
928 | self.rev(node) | |
927 | return node |
|
929 | return node | |
928 | except (TypeError, LookupError): |
|
930 | except (TypeError, LookupError): | |
929 | pass |
|
931 | pass | |
930 |
|
932 | |||
931 | def _partialmatch(self, id): |
|
933 | def _partialmatch(self, id): | |
932 | if len(id) < 40: |
|
934 | if len(id) < 40: | |
933 | try: |
|
935 | try: | |
934 | # hex(node)[:...] |
|
936 | # hex(node)[:...] | |
935 | l = len(id) // 2 # grab an even number of digits |
|
937 | l = len(id) // 2 # grab an even number of digits | |
936 | bin_id = bin(id[:l * 2]) |
|
938 | bin_id = bin(id[:l * 2]) | |
937 | nl = [n for n in self.nodemap if n[:l] == bin_id] |
|
939 | nl = [n for n in self.nodemap if n[:l] == bin_id] | |
938 | nl = [n for n in nl if hex(n).startswith(id)] |
|
940 | nl = [n for n in nl if hex(n).startswith(id)] | |
939 | if len(nl) > 0: |
|
941 | if len(nl) > 0: | |
940 | if len(nl) == 1: |
|
942 | if len(nl) == 1: | |
941 | return nl[0] |
|
943 | return nl[0] | |
942 | raise LookupError(id, self.indexfile, |
|
944 | raise LookupError(id, self.indexfile, | |
943 | _('ambiguous identifier')) |
|
945 | _('ambiguous identifier')) | |
944 | return None |
|
946 | return None | |
945 | except TypeError: |
|
947 | except TypeError: | |
946 | pass |
|
948 | pass | |
947 |
|
949 | |||
948 | def lookup(self, id): |
|
950 | def lookup(self, id): | |
949 | """locate a node based on: |
|
951 | """locate a node based on: | |
950 | - revision number or str(revision number) |
|
952 | - revision number or str(revision number) | |
951 | - nodeid or subset of hex nodeid |
|
953 | - nodeid or subset of hex nodeid | |
952 | """ |
|
954 | """ | |
953 | n = self._match(id) |
|
955 | n = self._match(id) | |
954 | if n is not None: |
|
956 | if n is not None: | |
955 | return n |
|
957 | return n | |
956 | n = self._partialmatch(id) |
|
958 | n = self._partialmatch(id) | |
957 | if n: |
|
959 | if n: | |
958 | return n |
|
960 | return n | |
959 |
|
961 | |||
960 | raise LookupError(id, self.indexfile, _('no match found')) |
|
962 | raise LookupError(id, self.indexfile, _('no match found')) | |
961 |
|
963 | |||
962 | def cmp(self, node, text): |
|
964 | def cmp(self, node, text): | |
963 | """compare text with a given file revision |
|
965 | """compare text with a given file revision | |
964 |
|
966 | |||
965 | returns True if text is different than what is stored. |
|
967 | returns True if text is different than what is stored. | |
966 | """ |
|
968 | """ | |
967 | p1, p2 = self.parents(node) |
|
969 | p1, p2 = self.parents(node) | |
968 | return hash(text, p1, p2) != node |
|
970 | return hash(text, p1, p2) != node | |
969 |
|
971 | |||
970 | def _addchunk(self, offset, data): |
|
972 | def _addchunk(self, offset, data): | |
971 | o, d = self._chunkcache |
|
973 | o, d = self._chunkcache | |
972 | # try to add to existing cache |
|
974 | # try to add to existing cache | |
973 | if o + len(d) == offset and len(d) + len(data) < _prereadsize: |
|
975 | if o + len(d) == offset and len(d) + len(data) < _prereadsize: | |
974 | self._chunkcache = o, d + data |
|
976 | self._chunkcache = o, d + data | |
975 | else: |
|
977 | else: | |
976 | self._chunkcache = offset, data |
|
978 | self._chunkcache = offset, data | |
977 |
|
979 | |||
978 | def _loadchunk(self, offset, length): |
|
980 | def _loadchunk(self, offset, length): | |
979 | if self._inline: |
|
981 | if self._inline: | |
980 | df = self.opener(self.indexfile) |
|
982 | df = self.opener(self.indexfile) | |
981 | else: |
|
983 | else: | |
982 | df = self.opener(self.datafile) |
|
984 | df = self.opener(self.datafile) | |
983 |
|
985 | |||
984 | readahead = max(65536, length) |
|
986 | readahead = max(65536, length) | |
985 | df.seek(offset) |
|
987 | df.seek(offset) | |
986 | d = df.read(readahead) |
|
988 | d = df.read(readahead) | |
987 | self._addchunk(offset, d) |
|
989 | self._addchunk(offset, d) | |
988 | if readahead > length: |
|
990 | if readahead > length: | |
989 | return d[:length] |
|
991 | return d[:length] | |
990 | return d |
|
992 | return d | |
991 |
|
993 | |||
992 | def _getchunk(self, offset, length): |
|
994 | def _getchunk(self, offset, length): | |
993 | o, d = self._chunkcache |
|
995 | o, d = self._chunkcache | |
994 | l = len(d) |
|
996 | l = len(d) | |
995 |
|
997 | |||
996 | # is it in the cache? |
|
998 | # is it in the cache? | |
997 | cachestart = offset - o |
|
999 | cachestart = offset - o | |
998 | cacheend = cachestart + length |
|
1000 | cacheend = cachestart + length | |
999 | if cachestart >= 0 and cacheend <= l: |
|
1001 | if cachestart >= 0 and cacheend <= l: | |
1000 | if cachestart == 0 and cacheend == l: |
|
1002 | if cachestart == 0 and cacheend == l: | |
1001 | return d # avoid a copy |
|
1003 | return d # avoid a copy | |
1002 | return d[cachestart:cacheend] |
|
1004 | return d[cachestart:cacheend] | |
1003 |
|
1005 | |||
1004 | return self._loadchunk(offset, length) |
|
1006 | return self._loadchunk(offset, length) | |
1005 |
|
1007 | |||
1006 | def _chunkraw(self, startrev, endrev): |
|
1008 | def _chunkraw(self, startrev, endrev): | |
1007 | start = self.start(startrev) |
|
1009 | start = self.start(startrev) | |
1008 | length = self.end(endrev) - start |
|
1010 | length = self.end(endrev) - start | |
1009 | if self._inline: |
|
1011 | if self._inline: | |
1010 | start += (startrev + 1) * self._io.size |
|
1012 | start += (startrev + 1) * self._io.size | |
1011 | return self._getchunk(start, length) |
|
1013 | return self._getchunk(start, length) | |
1012 |
|
1014 | |||
1013 | def _chunk(self, rev): |
|
1015 | def _chunk(self, rev): | |
1014 | return decompress(self._chunkraw(rev, rev)) |
|
1016 | return decompress(self._chunkraw(rev, rev)) | |
1015 |
|
1017 | |||
1016 | def _chunkclear(self): |
|
1018 | def _chunkclear(self): | |
1017 | self._chunkcache = (0, '') |
|
1019 | self._chunkcache = (0, '') | |
1018 |
|
1020 | |||
1019 | def deltaparent(self, rev): |
|
1021 | def deltaparent(self, rev): | |
1020 | """return previous revision or parentrev according to flags""" |
|
1022 | """return previous revision or parentrev according to flags""" | |
1021 | if self.base(rev) == rev: |
|
1023 | if self.base(rev) == rev: | |
1022 | return nullrev |
|
1024 | return nullrev | |
1023 | elif self.flags(rev) & REVIDX_PARENTDELTA: |
|
1025 | elif self.flags(rev) & REVIDX_PARENTDELTA: | |
1024 | return self.parentrevs(rev)[0] |
|
1026 | return self.parentrevs(rev)[0] | |
1025 | else: |
|
1027 | else: | |
1026 | return rev - 1 |
|
1028 | return rev - 1 | |
1027 |
|
1029 | |||
1028 |
|
1030 | |||
1029 | def deltachain(self, rev, cache): |
|
1031 | def deltachain(self, rev, cache): | |
1030 | """return chain of revisions to construct a given revision""" |
|
1032 | """return chain of revisions to construct a given revision""" | |
1031 | chain = [] |
|
1033 | chain = [] | |
1032 | check = False |
|
1034 | check = False | |
1033 | while self.base(rev) != rev and rev != cache: |
|
1035 | index = self.index | |
|
1036 | e = index[rev] | |||
|
1037 | while rev != e[3] and rev != cache: | |||
1034 | chain.append(rev) |
|
1038 | chain.append(rev) | |
1035 | rev = self.deltaparent(rev) |
|
1039 | if e[0] & REVIDX_PARENTDELTA: | |
|
1040 | rev = e[5] | |||
|
1041 | else: | |||
|
1042 | rev -= 1 | |||
|
1043 | e = index[rev] | |||
1036 | chain.reverse() |
|
1044 | chain.reverse() | |
1037 | if rev == cache: |
|
1045 | if rev == cache: | |
1038 | check = True |
|
1046 | check = True | |
1039 | return check, rev, chain |
|
1047 | return check, rev, chain | |
1040 |
|
1048 | |||
1041 | def revdiff(self, rev1, rev2): |
|
1049 | def revdiff(self, rev1, rev2): | |
1042 | """return or calculate a delta between two revisions""" |
|
1050 | """return or calculate a delta between two revisions""" | |
1043 | if rev1 != nullrev and self.deltaparent(rev2) == rev1: |
|
1051 | if rev1 != nullrev and self.deltaparent(rev2) == rev1: | |
1044 | return self._chunk(rev2) |
|
1052 | return self._chunk(rev2) | |
1045 |
|
1053 | |||
1046 | return mdiff.textdiff(self.revision(self.node(rev1)), |
|
1054 | return mdiff.textdiff(self.revision(self.node(rev1)), | |
1047 | self.revision(self.node(rev2))) |
|
1055 | self.revision(self.node(rev2))) | |
1048 |
|
1056 | |||
1049 | def revision(self, node): |
|
1057 | def revision(self, node): | |
1050 | """return an uncompressed revision of a given node""" |
|
1058 | """return an uncompressed revision of a given node""" | |
1051 | cache = nullrev |
|
1059 | cache = nullrev | |
1052 | if node == nullid: |
|
1060 | if node == nullid: | |
1053 | return "" |
|
1061 | return "" | |
1054 | if self._cache: |
|
1062 | if self._cache: | |
1055 | cache = self._cache[1] |
|
1063 | cache = self._cache[1] | |
1056 | if self._cache[0] == node: |
|
1064 | if self._cache[0] == node: | |
1057 | return self._cache[2] |
|
1065 | return self._cache[2] | |
1058 |
|
1066 | |||
1059 | # look up what we need to read |
|
1067 | # look up what we need to read | |
1060 | text = None |
|
1068 | text = None | |
1061 | rev = self.rev(node) |
|
1069 | rev = self.rev(node) | |
1062 | cache, base, chain = self.deltachain(rev, cache) |
|
1070 | cache, base, chain = self.deltachain(rev, cache) | |
1063 |
|
1071 | |||
1064 | # check rev flags |
|
1072 | # check rev flags | |
1065 | if self.flags(rev) & ~REVIDX_KNOWN_FLAGS: |
|
1073 | if self.flags(rev) & ~REVIDX_KNOWN_FLAGS: | |
1066 | raise RevlogError(_('incompatible revision flag %x') % |
|
1074 | raise RevlogError(_('incompatible revision flag %x') % | |
1067 | (self.flags(rev) & ~REVIDX_KNOWN_FLAGS)) |
|
1075 | (self.flags(rev) & ~REVIDX_KNOWN_FLAGS)) | |
1068 |
|
1076 | |||
1069 | # do we have useful data cached? |
|
1077 | # do we have useful data cached? | |
1070 | if cache and self._cache: |
|
1078 | if cache and self._cache: | |
|
1079 | global _cached | |||
|
1080 | _cached += 1 | |||
1071 | text = self._cache[2] |
|
1081 | text = self._cache[2] | |
|
1082 | else: | |||
|
1083 | global _uncached | |||
|
1084 | _uncached += 1 | |||
|
1085 | ||||
1072 |
|
1086 | |||
1073 | # drop cache to save memory |
|
1087 | # drop cache to save memory | |
1074 | self._cache = None |
|
1088 | self._cache = None | |
1075 |
|
1089 | |||
1076 | self._loadindex(base, rev + 1) |
|
1090 | self._loadindex(base, rev + 1) | |
1077 | self._chunkraw(base, rev) |
|
1091 | self._chunkraw(base, rev) | |
1078 | if text is None: |
|
1092 | if text is None: | |
1079 | text = self._chunk(base) |
|
1093 | text = self._chunk(base) | |
1080 |
|
1094 | |||
1081 | bins = [self._chunk(r) for r in chain] |
|
1095 | bins = [self._chunk(r) for r in chain] | |
1082 | text = mdiff.patches(text, bins) |
|
1096 | text = mdiff.patches(text, bins) | |
1083 | p1, p2 = self.parents(node) |
|
1097 | p1, p2 = self.parents(node) | |
1084 | if (node != hash(text, p1, p2) and |
|
1098 | if (node != hash(text, p1, p2) and | |
1085 | not (self.flags(rev) & REVIDX_PUNCHED_FLAG)): |
|
1099 | not (self.flags(rev) & REVIDX_PUNCHED_FLAG)): | |
1086 | raise RevlogError(_("integrity check failed on %s:%d") |
|
1100 | raise RevlogError(_("integrity check failed on %s:%d") | |
1087 | % (self.indexfile, rev)) |
|
1101 | % (self.indexfile, rev)) | |
1088 |
|
1102 | |||
1089 | self._cache = (node, rev, text) |
|
1103 | self._cache = (node, rev, text) | |
1090 | return text |
|
1104 | return text | |
1091 |
|
1105 | |||
1092 | def checkinlinesize(self, tr, fp=None): |
|
1106 | def checkinlinesize(self, tr, fp=None): | |
1093 | if not self._inline or (self.start(-2) + self.length(-2)) < _maxinline: |
|
1107 | if not self._inline or (self.start(-2) + self.length(-2)) < _maxinline: | |
1094 | return |
|
1108 | return | |
1095 |
|
1109 | |||
1096 | trinfo = tr.find(self.indexfile) |
|
1110 | trinfo = tr.find(self.indexfile) | |
1097 | if trinfo is None: |
|
1111 | if trinfo is None: | |
1098 | raise RevlogError(_("%s not found in the transaction") |
|
1112 | raise RevlogError(_("%s not found in the transaction") | |
1099 | % self.indexfile) |
|
1113 | % self.indexfile) | |
1100 |
|
1114 | |||
1101 | trindex = trinfo[2] |
|
1115 | trindex = trinfo[2] | |
1102 | dataoff = self.start(trindex) |
|
1116 | dataoff = self.start(trindex) | |
1103 |
|
1117 | |||
1104 | tr.add(self.datafile, dataoff) |
|
1118 | tr.add(self.datafile, dataoff) | |
1105 |
|
1119 | |||
1106 | if fp: |
|
1120 | if fp: | |
1107 | fp.flush() |
|
1121 | fp.flush() | |
1108 | fp.close() |
|
1122 | fp.close() | |
1109 |
|
1123 | |||
1110 | df = self.opener(self.datafile, 'w') |
|
1124 | df = self.opener(self.datafile, 'w') | |
1111 | try: |
|
1125 | try: | |
1112 | for r in self: |
|
1126 | for r in self: | |
1113 | df.write(self._chunkraw(r, r)) |
|
1127 | df.write(self._chunkraw(r, r)) | |
1114 | finally: |
|
1128 | finally: | |
1115 | df.close() |
|
1129 | df.close() | |
1116 |
|
1130 | |||
1117 | fp = self.opener(self.indexfile, 'w', atomictemp=True) |
|
1131 | fp = self.opener(self.indexfile, 'w', atomictemp=True) | |
1118 | self.version &= ~(REVLOGNGINLINEDATA) |
|
1132 | self.version &= ~(REVLOGNGINLINEDATA) | |
1119 | self._inline = False |
|
1133 | self._inline = False | |
1120 | for i in self: |
|
1134 | for i in self: | |
1121 | e = self._io.packentry(self.index[i], self.node, self.version, i) |
|
1135 | e = self._io.packentry(self.index[i], self.node, self.version, i) | |
1122 | fp.write(e) |
|
1136 | fp.write(e) | |
1123 |
|
1137 | |||
1124 | # if we don't call rename, the temp file will never replace the |
|
1138 | # if we don't call rename, the temp file will never replace the | |
1125 | # real index |
|
1139 | # real index | |
1126 | fp.rename() |
|
1140 | fp.rename() | |
1127 |
|
1141 | |||
1128 | tr.replace(self.indexfile, trindex * self._io.size) |
|
1142 | tr.replace(self.indexfile, trindex * self._io.size) | |
1129 | self._chunkclear() |
|
1143 | self._chunkclear() | |
1130 |
|
1144 | |||
1131 | def addrevision(self, text, transaction, link, p1, p2, d=None): |
|
1145 | def addrevision(self, text, transaction, link, p1, p2, d=None): | |
1132 | """add a revision to the log |
|
1146 | """add a revision to the log | |
1133 |
|
1147 | |||
1134 | text - the revision data to add |
|
1148 | text - the revision data to add | |
1135 | transaction - the transaction object used for rollback |
|
1149 | transaction - the transaction object used for rollback | |
1136 | link - the linkrev data to add |
|
1150 | link - the linkrev data to add | |
1137 | p1, p2 - the parent nodeids of the revision |
|
1151 | p1, p2 - the parent nodeids of the revision | |
1138 | d - an optional precomputed delta |
|
1152 | d - an optional precomputed delta | |
1139 | """ |
|
1153 | """ | |
1140 | dfh = None |
|
1154 | dfh = None | |
1141 | if not self._inline: |
|
1155 | if not self._inline: | |
1142 | dfh = self.opener(self.datafile, "a") |
|
1156 | dfh = self.opener(self.datafile, "a") | |
1143 | ifh = self.opener(self.indexfile, "a+") |
|
1157 | ifh = self.opener(self.indexfile, "a+") | |
1144 | try: |
|
1158 | try: | |
1145 | return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) |
|
1159 | return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) | |
1146 | finally: |
|
1160 | finally: | |
1147 | if dfh: |
|
1161 | if dfh: | |
1148 | dfh.close() |
|
1162 | dfh.close() | |
1149 | ifh.close() |
|
1163 | ifh.close() | |
1150 |
|
1164 | |||
1151 | def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): |
|
1165 | def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): | |
1152 | node = hash(text, p1, p2) |
|
1166 | node = hash(text, p1, p2) | |
1153 | if node in self.nodemap: |
|
1167 | if node in self.nodemap: | |
1154 | return node |
|
1168 | return node | |
1155 |
|
1169 | |||
1156 | curr = len(self) |
|
1170 | curr = len(self) | |
1157 | prev = curr - 1 |
|
1171 | prev = curr - 1 | |
1158 | base = self.base(prev) |
|
1172 | base = self.base(prev) | |
1159 | offset = self.end(prev) |
|
1173 | offset = self.end(prev) | |
1160 | flags = 0 |
|
1174 | flags = 0 | |
1161 |
|
1175 | |||
1162 | if curr: |
|
1176 | if curr: | |
1163 | if not d: |
|
1177 | if not d: | |
1164 | if self._parentdelta: |
|
1178 | if self._parentdelta: | |
1165 | ptext = self.revision(p1) |
|
1179 | ptext = self.revision(p1) | |
1166 | flags = REVIDX_PARENTDELTA |
|
1180 | flags = REVIDX_PARENTDELTA | |
1167 | else: |
|
1181 | else: | |
1168 | ptext = self.revision(self.node(prev)) |
|
1182 | ptext = self.revision(self.node(prev)) | |
1169 | d = mdiff.textdiff(ptext, text) |
|
1183 | d = mdiff.textdiff(ptext, text) | |
1170 | data = compress(d) |
|
1184 | data = compress(d) | |
1171 | l = len(data[1]) + len(data[0]) |
|
1185 | l = len(data[1]) + len(data[0]) | |
1172 | dist = l + offset - self.start(base) |
|
1186 | dist = l + offset - self.start(base) | |
1173 |
|
1187 | |||
1174 | # full versions are inserted when the needed deltas |
|
1188 | # full versions are inserted when the needed deltas | |
1175 | # become comparable to the uncompressed text |
|
1189 | # become comparable to the uncompressed text | |
1176 | # or the base revision is punched |
|
1190 | # or the base revision is punched | |
1177 | if (not curr or dist > len(text) * 2 or |
|
1191 | if (not curr or dist > len(text) * 2 or | |
1178 | (self.flags(base) & REVIDX_PUNCHED_FLAG)): |
|
1192 | (self.flags(base) & REVIDX_PUNCHED_FLAG)): | |
1179 | data = compress(text) |
|
1193 | data = compress(text) | |
1180 | l = len(data[1]) + len(data[0]) |
|
1194 | l = len(data[1]) + len(data[0]) | |
1181 | base = curr |
|
1195 | base = curr | |
1182 |
|
1196 | |||
1183 | e = (offset_type(offset, flags), l, len(text), |
|
1197 | e = (offset_type(offset, flags), l, len(text), | |
1184 | base, link, self.rev(p1), self.rev(p2), node) |
|
1198 | base, link, self.rev(p1), self.rev(p2), node) | |
1185 | self.index.insert(-1, e) |
|
1199 | self.index.insert(-1, e) | |
1186 | self.nodemap[node] = curr |
|
1200 | self.nodemap[node] = curr | |
1187 |
|
1201 | |||
1188 | entry = self._io.packentry(e, self.node, self.version, curr) |
|
1202 | entry = self._io.packentry(e, self.node, self.version, curr) | |
1189 | if not self._inline: |
|
1203 | if not self._inline: | |
1190 | transaction.add(self.datafile, offset) |
|
1204 | transaction.add(self.datafile, offset) | |
1191 | transaction.add(self.indexfile, curr * len(entry)) |
|
1205 | transaction.add(self.indexfile, curr * len(entry)) | |
1192 | if data[0]: |
|
1206 | if data[0]: | |
1193 | dfh.write(data[0]) |
|
1207 | dfh.write(data[0]) | |
1194 | dfh.write(data[1]) |
|
1208 | dfh.write(data[1]) | |
1195 | dfh.flush() |
|
1209 | dfh.flush() | |
1196 | ifh.write(entry) |
|
1210 | ifh.write(entry) | |
1197 | else: |
|
1211 | else: | |
1198 | offset += curr * self._io.size |
|
1212 | offset += curr * self._io.size | |
1199 | transaction.add(self.indexfile, offset, curr) |
|
1213 | transaction.add(self.indexfile, offset, curr) | |
1200 | ifh.write(entry) |
|
1214 | ifh.write(entry) | |
1201 | ifh.write(data[0]) |
|
1215 | ifh.write(data[0]) | |
1202 | ifh.write(data[1]) |
|
1216 | ifh.write(data[1]) | |
1203 | self.checkinlinesize(transaction, ifh) |
|
1217 | self.checkinlinesize(transaction, ifh) | |
1204 |
|
1218 | |||
1205 | if type(text) == str: # only accept immutable objects |
|
1219 | if type(text) == str: # only accept immutable objects | |
1206 | self._cache = (node, curr, text) |
|
1220 | self._cache = (node, curr, text) | |
1207 | return node |
|
1221 | return node | |
1208 |
|
1222 | |||
1209 | def group(self, nodelist, lookup, infocollect=None): |
|
1223 | def group(self, nodelist, lookup, infocollect=None): | |
1210 | """Calculate a delta group, yielding a sequence of changegroup chunks |
|
1224 | """Calculate a delta group, yielding a sequence of changegroup chunks | |
1211 | (strings). |
|
1225 | (strings). | |
1212 |
|
1226 | |||
1213 | Given a list of changeset revs, return a set of deltas and |
|
1227 | Given a list of changeset revs, return a set of deltas and | |
1214 | metadata corresponding to nodes. the first delta is |
|
1228 | metadata corresponding to nodes. the first delta is | |
1215 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to |
|
1229 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1216 | have this parent as it has all history before these |
|
1230 | have this parent as it has all history before these | |
1217 | changesets. parent is parent[0] |
|
1231 | changesets. parent is parent[0] | |
1218 | """ |
|
1232 | """ | |
1219 |
|
1233 | |||
1220 | revs = [self.rev(n) for n in nodelist] |
|
1234 | revs = [self.rev(n) for n in nodelist] | |
1221 |
|
1235 | |||
1222 | # if we don't have any revisions touched by these changesets, bail |
|
1236 | # if we don't have any revisions touched by these changesets, bail | |
1223 | if not revs: |
|
1237 | if not revs: | |
1224 | yield changegroup.closechunk() |
|
1238 | yield changegroup.closechunk() | |
1225 | return |
|
1239 | return | |
1226 |
|
1240 | |||
1227 | # add the parent of the first rev |
|
1241 | # add the parent of the first rev | |
1228 | p = self.parentrevs(revs[0])[0] |
|
1242 | p = self.parentrevs(revs[0])[0] | |
1229 | revs.insert(0, p) |
|
1243 | revs.insert(0, p) | |
1230 |
|
1244 | |||
1231 | # build deltas |
|
1245 | # build deltas | |
1232 | for d in xrange(len(revs) - 1): |
|
1246 | for d in xrange(len(revs) - 1): | |
1233 | a, b = revs[d], revs[d + 1] |
|
1247 | a, b = revs[d], revs[d + 1] | |
1234 | nb = self.node(b) |
|
1248 | nb = self.node(b) | |
1235 |
|
1249 | |||
1236 | if infocollect is not None: |
|
1250 | if infocollect is not None: | |
1237 | infocollect(nb) |
|
1251 | infocollect(nb) | |
1238 |
|
1252 | |||
1239 | p = self.parents(nb) |
|
1253 | p = self.parents(nb) | |
1240 | meta = nb + p[0] + p[1] + lookup(nb) |
|
1254 | meta = nb + p[0] + p[1] + lookup(nb) | |
1241 | if a == -1: |
|
1255 | if a == -1: | |
1242 | d = self.revision(nb) |
|
1256 | d = self.revision(nb) | |
1243 | meta += mdiff.trivialdiffheader(len(d)) |
|
1257 | meta += mdiff.trivialdiffheader(len(d)) | |
1244 | else: |
|
1258 | else: | |
1245 | d = self.revdiff(a, b) |
|
1259 | d = self.revdiff(a, b) | |
1246 | yield changegroup.chunkheader(len(meta) + len(d)) |
|
1260 | yield changegroup.chunkheader(len(meta) + len(d)) | |
1247 | yield meta |
|
1261 | yield meta | |
1248 | yield d |
|
1262 | yield d | |
1249 |
|
1263 | |||
1250 | yield changegroup.closechunk() |
|
1264 | yield changegroup.closechunk() | |
1251 |
|
1265 | |||
1252 | def addgroup(self, revs, linkmapper, transaction): |
|
1266 | def addgroup(self, revs, linkmapper, transaction): | |
1253 | """ |
|
1267 | """ | |
1254 | add a delta group |
|
1268 | add a delta group | |
1255 |
|
1269 | |||
1256 | given a set of deltas, add them to the revision log. the |
|
1270 | given a set of deltas, add them to the revision log. the | |
1257 | first delta is against its parent, which should be in our |
|
1271 | first delta is against its parent, which should be in our | |
1258 | log, the rest are against the previous delta. |
|
1272 | log, the rest are against the previous delta. | |
1259 | """ |
|
1273 | """ | |
1260 |
|
1274 | |||
1261 | #track the base of the current delta log |
|
1275 | #track the base of the current delta log | |
1262 | r = len(self) |
|
1276 | r = len(self) | |
1263 | t = r - 1 |
|
1277 | t = r - 1 | |
1264 | node = None |
|
1278 | node = None | |
1265 |
|
1279 | |||
1266 | base = prev = nullrev |
|
1280 | base = prev = nullrev | |
1267 | start = end = textlen = 0 |
|
1281 | start = end = textlen = 0 | |
1268 | if r: |
|
1282 | if r: | |
1269 | end = self.end(t) |
|
1283 | end = self.end(t) | |
1270 |
|
1284 | |||
1271 | ifh = self.opener(self.indexfile, "a+") |
|
1285 | ifh = self.opener(self.indexfile, "a+") | |
1272 | isize = r * self._io.size |
|
1286 | isize = r * self._io.size | |
1273 | if self._inline: |
|
1287 | if self._inline: | |
1274 | transaction.add(self.indexfile, end + isize, r) |
|
1288 | transaction.add(self.indexfile, end + isize, r) | |
1275 | dfh = None |
|
1289 | dfh = None | |
1276 | else: |
|
1290 | else: | |
1277 | transaction.add(self.indexfile, isize, r) |
|
1291 | transaction.add(self.indexfile, isize, r) | |
1278 | transaction.add(self.datafile, end) |
|
1292 | transaction.add(self.datafile, end) | |
1279 | dfh = self.opener(self.datafile, "a") |
|
1293 | dfh = self.opener(self.datafile, "a") | |
1280 |
|
1294 | |||
1281 | try: |
|
1295 | try: | |
1282 | # loop through our set of deltas |
|
1296 | # loop through our set of deltas | |
1283 | chain = None |
|
1297 | chain = None | |
1284 | for chunk in revs: |
|
1298 | for chunk in revs: | |
1285 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) |
|
1299 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
1286 | link = linkmapper(cs) |
|
1300 | link = linkmapper(cs) | |
1287 | if node in self.nodemap: |
|
1301 | if node in self.nodemap: | |
1288 | # this can happen if two branches make the same change |
|
1302 | # this can happen if two branches make the same change | |
1289 | chain = node |
|
1303 | chain = node | |
1290 | continue |
|
1304 | continue | |
1291 | delta = buffer(chunk, 80) |
|
1305 | delta = buffer(chunk, 80) | |
1292 | del chunk |
|
1306 | del chunk | |
1293 |
|
1307 | |||
1294 | for p in (p1, p2): |
|
1308 | for p in (p1, p2): | |
1295 | if not p in self.nodemap: |
|
1309 | if not p in self.nodemap: | |
1296 | raise LookupError(p, self.indexfile, _('unknown parent')) |
|
1310 | raise LookupError(p, self.indexfile, _('unknown parent')) | |
1297 |
|
1311 | |||
1298 | if not chain: |
|
1312 | if not chain: | |
1299 | # retrieve the parent revision of the delta chain |
|
1313 | # retrieve the parent revision of the delta chain | |
1300 | chain = p1 |
|
1314 | chain = p1 | |
1301 | if not chain in self.nodemap: |
|
1315 | if not chain in self.nodemap: | |
1302 | raise LookupError(chain, self.indexfile, _('unknown base')) |
|
1316 | raise LookupError(chain, self.indexfile, _('unknown base')) | |
1303 |
|
1317 | |||
1304 | # full versions are inserted when the needed deltas become |
|
1318 | # full versions are inserted when the needed deltas become | |
1305 | # comparable to the uncompressed text or when the previous |
|
1319 | # comparable to the uncompressed text or when the previous | |
1306 | # version is not the one we have a delta against. We use |
|
1320 | # version is not the one we have a delta against. We use | |
1307 | # the size of the previous full rev as a proxy for the |
|
1321 | # the size of the previous full rev as a proxy for the | |
1308 | # current size. |
|
1322 | # current size. | |
1309 |
|
1323 | |||
1310 | if chain == prev: |
|
1324 | if chain == prev: | |
1311 | cdelta = compress(delta) |
|
1325 | cdelta = compress(delta) | |
1312 | cdeltalen = len(cdelta[0]) + len(cdelta[1]) |
|
1326 | cdeltalen = len(cdelta[0]) + len(cdelta[1]) | |
1313 | textlen = mdiff.patchedsize(textlen, delta) |
|
1327 | textlen = mdiff.patchedsize(textlen, delta) | |
1314 |
|
1328 | |||
1315 | if chain != prev or (end - start + cdeltalen) > textlen * 2: |
|
1329 | if chain != prev or (end - start + cdeltalen) > textlen * 2: | |
1316 | # flush our writes here so we can read it in revision |
|
1330 | # flush our writes here so we can read it in revision | |
1317 | if dfh: |
|
1331 | if dfh: | |
1318 | dfh.flush() |
|
1332 | dfh.flush() | |
1319 | ifh.flush() |
|
1333 | ifh.flush() | |
1320 | text = self.revision(chain) |
|
1334 | text = self.revision(chain) | |
1321 | if len(text) == 0: |
|
1335 | if len(text) == 0: | |
1322 | # skip over trivial delta header |
|
1336 | # skip over trivial delta header | |
1323 | text = buffer(delta, 12) |
|
1337 | text = buffer(delta, 12) | |
1324 | else: |
|
1338 | else: | |
1325 | text = mdiff.patches(text, [delta]) |
|
1339 | text = mdiff.patches(text, [delta]) | |
1326 | del delta |
|
1340 | del delta | |
1327 | chk = self._addrevision(text, transaction, link, p1, p2, None, |
|
1341 | chk = self._addrevision(text, transaction, link, p1, p2, None, | |
1328 | ifh, dfh) |
|
1342 | ifh, dfh) | |
1329 | if not dfh and not self._inline: |
|
1343 | if not dfh and not self._inline: | |
1330 | # addrevision switched from inline to conventional |
|
1344 | # addrevision switched from inline to conventional | |
1331 | # reopen the index |
|
1345 | # reopen the index | |
1332 | dfh = self.opener(self.datafile, "a") |
|
1346 | dfh = self.opener(self.datafile, "a") | |
1333 | ifh = self.opener(self.indexfile, "a") |
|
1347 | ifh = self.opener(self.indexfile, "a") | |
1334 | if chk != node: |
|
1348 | if chk != node: | |
1335 | raise RevlogError(_("consistency error adding group")) |
|
1349 | raise RevlogError(_("consistency error adding group")) | |
1336 | textlen = len(text) |
|
1350 | textlen = len(text) | |
1337 | else: |
|
1351 | else: | |
1338 | e = (offset_type(end, 0), cdeltalen, textlen, base, |
|
1352 | e = (offset_type(end, 0), cdeltalen, textlen, base, | |
1339 | link, self.rev(p1), self.rev(p2), node) |
|
1353 | link, self.rev(p1), self.rev(p2), node) | |
1340 | self.index.insert(-1, e) |
|
1354 | self.index.insert(-1, e) | |
1341 | self.nodemap[node] = r |
|
1355 | self.nodemap[node] = r | |
1342 | entry = self._io.packentry(e, self.node, self.version, r) |
|
1356 | entry = self._io.packentry(e, self.node, self.version, r) | |
1343 | if self._inline: |
|
1357 | if self._inline: | |
1344 | ifh.write(entry) |
|
1358 | ifh.write(entry) | |
1345 | ifh.write(cdelta[0]) |
|
1359 | ifh.write(cdelta[0]) | |
1346 | ifh.write(cdelta[1]) |
|
1360 | ifh.write(cdelta[1]) | |
1347 | self.checkinlinesize(transaction, ifh) |
|
1361 | self.checkinlinesize(transaction, ifh) | |
1348 | if not self._inline: |
|
1362 | if not self._inline: | |
1349 | dfh = self.opener(self.datafile, "a") |
|
1363 | dfh = self.opener(self.datafile, "a") | |
1350 | ifh = self.opener(self.indexfile, "a") |
|
1364 | ifh = self.opener(self.indexfile, "a") | |
1351 | else: |
|
1365 | else: | |
1352 | dfh.write(cdelta[0]) |
|
1366 | dfh.write(cdelta[0]) | |
1353 | dfh.write(cdelta[1]) |
|
1367 | dfh.write(cdelta[1]) | |
1354 | ifh.write(entry) |
|
1368 | ifh.write(entry) | |
1355 |
|
1369 | |||
1356 | t, r, chain, prev = r, r + 1, node, node |
|
1370 | t, r, chain, prev = r, r + 1, node, node | |
1357 | base = self.base(t) |
|
1371 | base = self.base(t) | |
1358 | start = self.start(base) |
|
1372 | start = self.start(base) | |
1359 | end = self.end(t) |
|
1373 | end = self.end(t) | |
1360 | finally: |
|
1374 | finally: | |
1361 | if dfh: |
|
1375 | if dfh: | |
1362 | dfh.close() |
|
1376 | dfh.close() | |
1363 | ifh.close() |
|
1377 | ifh.close() | |
1364 |
|
1378 | |||
1365 | return node |
|
1379 | return node | |
1366 |
|
1380 | |||
1367 | def strip(self, minlink, transaction): |
|
1381 | def strip(self, minlink, transaction): | |
1368 | """truncate the revlog on the first revision with a linkrev >= minlink |
|
1382 | """truncate the revlog on the first revision with a linkrev >= minlink | |
1369 |
|
1383 | |||
1370 | This function is called when we're stripping revision minlink and |
|
1384 | This function is called when we're stripping revision minlink and | |
1371 | its descendants from the repository. |
|
1385 | its descendants from the repository. | |
1372 |
|
1386 | |||
1373 | We have to remove all revisions with linkrev >= minlink, because |
|
1387 | We have to remove all revisions with linkrev >= minlink, because | |
1374 | the equivalent changelog revisions will be renumbered after the |
|
1388 | the equivalent changelog revisions will be renumbered after the | |
1375 | strip. |
|
1389 | strip. | |
1376 |
|
1390 | |||
1377 | So we truncate the revlog on the first of these revisions, and |
|
1391 | So we truncate the revlog on the first of these revisions, and | |
1378 | trust that the caller has saved the revisions that shouldn't be |
|
1392 | trust that the caller has saved the revisions that shouldn't be | |
1379 | removed and that it'll readd them after this truncation. |
|
1393 | removed and that it'll readd them after this truncation. | |
1380 | """ |
|
1394 | """ | |
1381 | if len(self) == 0: |
|
1395 | if len(self) == 0: | |
1382 | return |
|
1396 | return | |
1383 |
|
1397 | |||
1384 | if isinstance(self.index, lazyindex): |
|
1398 | if isinstance(self.index, lazyindex): | |
1385 | self._loadindexmap() |
|
1399 | self._loadindexmap() | |
1386 |
|
1400 | |||
1387 | for rev in self: |
|
1401 | for rev in self: | |
1388 | if self.index[rev][4] >= minlink: |
|
1402 | if self.index[rev][4] >= minlink: | |
1389 | break |
|
1403 | break | |
1390 | else: |
|
1404 | else: | |
1391 | return |
|
1405 | return | |
1392 |
|
1406 | |||
1393 | # first truncate the files on disk |
|
1407 | # first truncate the files on disk | |
1394 | end = self.start(rev) |
|
1408 | end = self.start(rev) | |
1395 | if not self._inline: |
|
1409 | if not self._inline: | |
1396 | transaction.add(self.datafile, end) |
|
1410 | transaction.add(self.datafile, end) | |
1397 | end = rev * self._io.size |
|
1411 | end = rev * self._io.size | |
1398 | else: |
|
1412 | else: | |
1399 | end += rev * self._io.size |
|
1413 | end += rev * self._io.size | |
1400 |
|
1414 | |||
1401 | transaction.add(self.indexfile, end) |
|
1415 | transaction.add(self.indexfile, end) | |
1402 |
|
1416 | |||
1403 | # then reset internal state in memory to forget those revisions |
|
1417 | # then reset internal state in memory to forget those revisions | |
1404 | self._cache = None |
|
1418 | self._cache = None | |
1405 | self._chunkclear() |
|
1419 | self._chunkclear() | |
1406 | for x in xrange(rev, len(self)): |
|
1420 | for x in xrange(rev, len(self)): | |
1407 | del self.nodemap[self.node(x)] |
|
1421 | del self.nodemap[self.node(x)] | |
1408 |
|
1422 | |||
1409 | del self.index[rev:-1] |
|
1423 | del self.index[rev:-1] | |
1410 |
|
1424 | |||
1411 | def checksize(self): |
|
1425 | def checksize(self): | |
1412 | expected = 0 |
|
1426 | expected = 0 | |
1413 | if len(self): |
|
1427 | if len(self): | |
1414 | expected = max(0, self.end(len(self) - 1)) |
|
1428 | expected = max(0, self.end(len(self) - 1)) | |
1415 |
|
1429 | |||
1416 | try: |
|
1430 | try: | |
1417 | f = self.opener(self.datafile) |
|
1431 | f = self.opener(self.datafile) | |
1418 | f.seek(0, 2) |
|
1432 | f.seek(0, 2) | |
1419 | actual = f.tell() |
|
1433 | actual = f.tell() | |
1420 | dd = actual - expected |
|
1434 | dd = actual - expected | |
1421 | except IOError, inst: |
|
1435 | except IOError, inst: | |
1422 | if inst.errno != errno.ENOENT: |
|
1436 | if inst.errno != errno.ENOENT: | |
1423 | raise |
|
1437 | raise | |
1424 | dd = 0 |
|
1438 | dd = 0 | |
1425 |
|
1439 | |||
1426 | try: |
|
1440 | try: | |
1427 | f = self.opener(self.indexfile) |
|
1441 | f = self.opener(self.indexfile) | |
1428 | f.seek(0, 2) |
|
1442 | f.seek(0, 2) | |
1429 | actual = f.tell() |
|
1443 | actual = f.tell() | |
1430 | s = self._io.size |
|
1444 | s = self._io.size | |
1431 | i = max(0, actual // s) |
|
1445 | i = max(0, actual // s) | |
1432 | di = actual - (i * s) |
|
1446 | di = actual - (i * s) | |
1433 | if self._inline: |
|
1447 | if self._inline: | |
1434 | databytes = 0 |
|
1448 | databytes = 0 | |
1435 | for r in self: |
|
1449 | for r in self: | |
1436 | databytes += max(0, self.length(r)) |
|
1450 | databytes += max(0, self.length(r)) | |
1437 | dd = 0 |
|
1451 | dd = 0 | |
1438 | di = actual - len(self) * s - databytes |
|
1452 | di = actual - len(self) * s - databytes | |
1439 | except IOError, inst: |
|
1453 | except IOError, inst: | |
1440 | if inst.errno != errno.ENOENT: |
|
1454 | if inst.errno != errno.ENOENT: | |
1441 | raise |
|
1455 | raise | |
1442 | di = 0 |
|
1456 | di = 0 | |
1443 |
|
1457 | |||
1444 | return (dd, di) |
|
1458 | return (dd, di) | |
1445 |
|
1459 | |||
1446 | def files(self): |
|
1460 | def files(self): | |
1447 | res = [self.indexfile] |
|
1461 | res = [self.indexfile] | |
1448 | if not self._inline: |
|
1462 | if not self._inline: | |
1449 | res.append(self.datafile) |
|
1463 | res.append(self.datafile) | |
1450 | return res |
|
1464 | return res |
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