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@@ -1,1293 +1,1292 b'' | |||||
1 | """ |
|
1 | """ | |
2 | revlog.py - storage back-end for mercurial |
|
2 | revlog.py - storage back-end for mercurial | |
3 |
|
3 | |||
4 | This provides efficient delta storage with O(1) retrieve and append |
|
4 | This provides efficient delta storage with O(1) retrieve and append | |
5 | and O(changes) merge between branches |
|
5 | and O(changes) merge between branches | |
6 |
|
6 | |||
7 | Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
|
7 | Copyright 2005-2007 Matt Mackall <mpm@selenic.com> | |
8 |
|
8 | |||
9 | This software may be used and distributed according to the terms |
|
9 | This software may be used and distributed according to the terms | |
10 | of the GNU General Public License, incorporated herein by reference. |
|
10 | of the GNU General Public License, incorporated herein by reference. | |
11 | """ |
|
11 | """ | |
12 |
|
12 | |||
13 | from node import * |
|
13 | from node import * | |
14 | from i18n import _ |
|
14 | from i18n import _ | |
15 | import binascii, changegroup, errno, ancestor, mdiff, os |
|
15 | import binascii, changegroup, errno, ancestor, mdiff, os | |
16 | import sha, struct, util, zlib |
|
16 | import sha, struct, util, zlib | |
17 |
|
17 | |||
18 | # revlog version strings |
|
18 | # revlog version strings | |
19 | REVLOGV0 = 0 |
|
19 | REVLOGV0 = 0 | |
20 | REVLOGNG = 1 |
|
20 | REVLOGNG = 1 | |
21 |
|
21 | |||
22 | # revlog flags |
|
22 | # revlog flags | |
23 | REVLOGNGINLINEDATA = (1 << 16) |
|
23 | REVLOGNGINLINEDATA = (1 << 16) | |
24 | REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA |
|
24 | REVLOG_DEFAULT_FLAGS = REVLOGNGINLINEDATA | |
25 |
|
25 | |||
26 | REVLOG_DEFAULT_FORMAT = REVLOGNG |
|
26 | REVLOG_DEFAULT_FORMAT = REVLOGNG | |
27 | REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS |
|
27 | REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS | |
28 |
|
28 | |||
29 | def hash(text, p1, p2): |
|
29 | def hash(text, p1, p2): | |
30 | """generate a hash from the given text and its parent hashes |
|
30 | """generate a hash from the given text and its parent hashes | |
31 |
|
31 | |||
32 | This hash combines both the current file contents and its history |
|
32 | This hash combines both the current file contents and its history | |
33 | in a manner that makes it easy to distinguish nodes with the same |
|
33 | in a manner that makes it easy to distinguish nodes with the same | |
34 | content in the revision graph. |
|
34 | content in the revision graph. | |
35 | """ |
|
35 | """ | |
36 | l = [p1, p2] |
|
36 | l = [p1, p2] | |
37 | l.sort() |
|
37 | l.sort() | |
38 | s = sha.new(l[0]) |
|
38 | s = sha.new(l[0]) | |
39 | s.update(l[1]) |
|
39 | s.update(l[1]) | |
40 | s.update(text) |
|
40 | s.update(text) | |
41 | return s.digest() |
|
41 | return s.digest() | |
42 |
|
42 | |||
43 | def compress(text): |
|
43 | def compress(text): | |
44 | """ generate a possibly-compressed representation of text """ |
|
44 | """ generate a possibly-compressed representation of text """ | |
45 | if not text: return ("", text) |
|
45 | if not text: return ("", text) | |
46 | if len(text) < 44: |
|
46 | if len(text) < 44: | |
47 | if text[0] == '\0': return ("", text) |
|
47 | if text[0] == '\0': return ("", text) | |
48 | return ('u', text) |
|
48 | return ('u', text) | |
49 | bin = zlib.compress(text) |
|
49 | bin = zlib.compress(text) | |
50 | if len(bin) > len(text): |
|
50 | if len(bin) > len(text): | |
51 | if text[0] == '\0': return ("", text) |
|
51 | if text[0] == '\0': return ("", text) | |
52 | return ('u', text) |
|
52 | return ('u', text) | |
53 | return ("", bin) |
|
53 | return ("", bin) | |
54 |
|
54 | |||
55 | def decompress(bin): |
|
55 | def decompress(bin): | |
56 | """ decompress the given input """ |
|
56 | """ decompress the given input """ | |
57 | if not bin: return bin |
|
57 | if not bin: return bin | |
58 | t = bin[0] |
|
58 | t = bin[0] | |
59 | if t == '\0': return bin |
|
59 | if t == '\0': return bin | |
60 | if t == 'x': return zlib.decompress(bin) |
|
60 | if t == 'x': return zlib.decompress(bin) | |
61 | if t == 'u': return bin[1:] |
|
61 | if t == 'u': return bin[1:] | |
62 | raise RevlogError(_("unknown compression type %r") % t) |
|
62 | raise RevlogError(_("unknown compression type %r") % t) | |
63 |
|
63 | |||
64 | indexformatv0 = ">4l20s20s20s" |
|
64 | indexformatv0 = ">4l20s20s20s" | |
65 | v0shaoffset = 56 |
|
65 | v0shaoffset = 56 | |
66 | # index ng: |
|
66 | # index ng: | |
67 | # 6 bytes offset |
|
67 | # 6 bytes offset | |
68 | # 2 bytes flags |
|
68 | # 2 bytes flags | |
69 | # 4 bytes compressed length |
|
69 | # 4 bytes compressed length | |
70 | # 4 bytes uncompressed length |
|
70 | # 4 bytes uncompressed length | |
71 | # 4 bytes: base rev |
|
71 | # 4 bytes: base rev | |
72 | # 4 bytes link rev |
|
72 | # 4 bytes link rev | |
73 | # 4 bytes parent 1 rev |
|
73 | # 4 bytes parent 1 rev | |
74 | # 4 bytes parent 2 rev |
|
74 | # 4 bytes parent 2 rev | |
75 | # 32 bytes: nodeid |
|
75 | # 32 bytes: nodeid | |
76 | indexformatng = ">Qiiiiii20s12x" |
|
76 | indexformatng = ">Qiiiiii20s12x" | |
77 | ngshaoffset = 32 |
|
77 | ngshaoffset = 32 | |
78 | versionformat = ">I" |
|
78 | versionformat = ">I" | |
79 |
|
79 | |||
80 | class lazyparser(object): |
|
80 | class lazyparser(object): | |
81 | """ |
|
81 | """ | |
82 | this class avoids the need to parse the entirety of large indices |
|
82 | this class avoids the need to parse the entirety of large indices | |
83 | """ |
|
83 | """ | |
84 |
|
84 | |||
85 | # lazyparser is not safe to use on windows if win32 extensions not |
|
85 | # lazyparser is not safe to use on windows if win32 extensions not | |
86 | # available. it keeps file handle open, which make it not possible |
|
86 | # available. it keeps file handle open, which make it not possible | |
87 | # to break hardlinks on local cloned repos. |
|
87 | # to break hardlinks on local cloned repos. | |
88 | safe_to_use = os.name != 'nt' or (not util.is_win_9x() and |
|
88 | safe_to_use = os.name != 'nt' or (not util.is_win_9x() and | |
89 | hasattr(util, 'win32api')) |
|
89 | hasattr(util, 'win32api')) | |
90 |
|
90 | |||
91 | def __init__(self, dataf, size): |
|
91 | def __init__(self, dataf, size): | |
92 | self.dataf = dataf |
|
92 | self.dataf = dataf | |
93 | self.s = struct.calcsize(indexformatng) |
|
93 | self.s = struct.calcsize(indexformatng) | |
94 | self.datasize = size |
|
94 | self.datasize = size | |
95 | self.l = size/self.s |
|
95 | self.l = size/self.s | |
96 | self.index = [None] * self.l |
|
96 | self.index = [None] * self.l | |
97 | self.map = {nullid: nullrev} |
|
97 | self.map = {nullid: nullrev} | |
98 | self.allmap = 0 |
|
98 | self.allmap = 0 | |
99 | self.all = 0 |
|
99 | self.all = 0 | |
100 | self.mapfind_count = 0 |
|
100 | self.mapfind_count = 0 | |
101 |
|
101 | |||
102 | def loadmap(self): |
|
102 | def loadmap(self): | |
103 | """ |
|
103 | """ | |
104 | during a commit, we need to make sure the rev being added is |
|
104 | during a commit, we need to make sure the rev being added is | |
105 | not a duplicate. This requires loading the entire index, |
|
105 | not a duplicate. This requires loading the entire index, | |
106 | which is fairly slow. loadmap can load up just the node map, |
|
106 | which is fairly slow. loadmap can load up just the node map, | |
107 | which takes much less time. |
|
107 | which takes much less time. | |
108 | """ |
|
108 | """ | |
109 | if self.allmap: return |
|
109 | if self.allmap: return | |
110 | end = self.datasize |
|
110 | end = self.datasize | |
111 | self.allmap = 1 |
|
111 | self.allmap = 1 | |
112 | cur = 0 |
|
112 | cur = 0 | |
113 | count = 0 |
|
113 | count = 0 | |
114 | blocksize = self.s * 256 |
|
114 | blocksize = self.s * 256 | |
115 | self.dataf.seek(0) |
|
115 | self.dataf.seek(0) | |
116 | while cur < end: |
|
116 | while cur < end: | |
117 | data = self.dataf.read(blocksize) |
|
117 | data = self.dataf.read(blocksize) | |
118 | off = 0 |
|
118 | off = 0 | |
119 | for x in xrange(256): |
|
119 | for x in xrange(256): | |
120 | n = data[off + ngshaoffset:off + ngshaoffset + 20] |
|
120 | n = data[off + ngshaoffset:off + ngshaoffset + 20] | |
121 | self.map[n] = count |
|
121 | self.map[n] = count | |
122 | count += 1 |
|
122 | count += 1 | |
123 | if count >= self.l: |
|
123 | if count >= self.l: | |
124 | break |
|
124 | break | |
125 | off += self.s |
|
125 | off += self.s | |
126 | cur += blocksize |
|
126 | cur += blocksize | |
127 |
|
127 | |||
128 | def loadblock(self, blockstart, blocksize, data=None): |
|
128 | def loadblock(self, blockstart, blocksize, data=None): | |
129 | if self.all: return |
|
129 | if self.all: return | |
130 | if data is None: |
|
130 | if data is None: | |
131 | self.dataf.seek(blockstart) |
|
131 | self.dataf.seek(blockstart) | |
132 | if blockstart + blocksize > self.datasize: |
|
132 | if blockstart + blocksize > self.datasize: | |
133 | # the revlog may have grown since we've started running, |
|
133 | # the revlog may have grown since we've started running, | |
134 | # but we don't have space in self.index for more entries. |
|
134 | # but we don't have space in self.index for more entries. | |
135 | # limit blocksize so that we don't get too much data. |
|
135 | # limit blocksize so that we don't get too much data. | |
136 | blocksize = max(self.datasize - blockstart, 0) |
|
136 | blocksize = max(self.datasize - blockstart, 0) | |
137 | data = self.dataf.read(blocksize) |
|
137 | data = self.dataf.read(blocksize) | |
138 | lend = len(data) / self.s |
|
138 | lend = len(data) / self.s | |
139 | i = blockstart / self.s |
|
139 | i = blockstart / self.s | |
140 | off = 0 |
|
140 | off = 0 | |
141 | # lazyindex supports __delitem__ |
|
141 | # lazyindex supports __delitem__ | |
142 | if lend > len(self.index) - i: |
|
142 | if lend > len(self.index) - i: | |
143 | lend = len(self.index) - i |
|
143 | lend = len(self.index) - i | |
144 | for x in xrange(lend): |
|
144 | for x in xrange(lend): | |
145 | if self.index[i + x] == None: |
|
145 | if self.index[i + x] == None: | |
146 | b = data[off : off + self.s] |
|
146 | b = data[off : off + self.s] | |
147 | self.index[i + x] = b |
|
147 | self.index[i + x] = b | |
148 | n = b[ngshaoffset:ngshaoffset + 20] |
|
148 | n = b[ngshaoffset:ngshaoffset + 20] | |
149 | self.map[n] = i + x |
|
149 | self.map[n] = i + x | |
150 | off += self.s |
|
150 | off += self.s | |
151 |
|
151 | |||
152 | def findnode(self, node): |
|
152 | def findnode(self, node): | |
153 | """search backwards through the index file for a specific node""" |
|
153 | """search backwards through the index file for a specific node""" | |
154 | if self.allmap: return None |
|
154 | if self.allmap: return None | |
155 |
|
155 | |||
156 | # hg log will cause many many searches for the manifest |
|
156 | # hg log will cause many many searches for the manifest | |
157 | # nodes. After we get called a few times, just load the whole |
|
157 | # nodes. After we get called a few times, just load the whole | |
158 | # thing. |
|
158 | # thing. | |
159 | if self.mapfind_count > 8: |
|
159 | if self.mapfind_count > 8: | |
160 | self.loadmap() |
|
160 | self.loadmap() | |
161 | if node in self.map: |
|
161 | if node in self.map: | |
162 | return node |
|
162 | return node | |
163 | return None |
|
163 | return None | |
164 | self.mapfind_count += 1 |
|
164 | self.mapfind_count += 1 | |
165 | last = self.l - 1 |
|
165 | last = self.l - 1 | |
166 | while self.index[last] != None: |
|
166 | while self.index[last] != None: | |
167 | if last == 0: |
|
167 | if last == 0: | |
168 | self.all = 1 |
|
168 | self.all = 1 | |
169 | self.allmap = 1 |
|
169 | self.allmap = 1 | |
170 | return None |
|
170 | return None | |
171 | last -= 1 |
|
171 | last -= 1 | |
172 | end = (last + 1) * self.s |
|
172 | end = (last + 1) * self.s | |
173 | blocksize = self.s * 256 |
|
173 | blocksize = self.s * 256 | |
174 | while end >= 0: |
|
174 | while end >= 0: | |
175 | start = max(end - blocksize, 0) |
|
175 | start = max(end - blocksize, 0) | |
176 | self.dataf.seek(start) |
|
176 | self.dataf.seek(start) | |
177 | data = self.dataf.read(end - start) |
|
177 | data = self.dataf.read(end - start) | |
178 | findend = end - start |
|
178 | findend = end - start | |
179 | while True: |
|
179 | while True: | |
180 | # we're searching backwards, so weh have to make sure |
|
180 | # we're searching backwards, so weh have to make sure | |
181 | # we don't find a changeset where this node is a parent |
|
181 | # we don't find a changeset where this node is a parent | |
182 | off = data.rfind(node, 0, findend) |
|
182 | off = data.rfind(node, 0, findend) | |
183 | findend = off |
|
183 | findend = off | |
184 | if off >= 0: |
|
184 | if off >= 0: | |
185 | i = off / self.s |
|
185 | i = off / self.s | |
186 | off = i * self.s |
|
186 | off = i * self.s | |
187 | n = data[off + ngshaoffset:off + ngshaoffset + 20] |
|
187 | n = data[off + ngshaoffset:off + ngshaoffset + 20] | |
188 | if n == node: |
|
188 | if n == node: | |
189 | self.map[n] = i + start / self.s |
|
189 | self.map[n] = i + start / self.s | |
190 | return node |
|
190 | return node | |
191 | else: |
|
191 | else: | |
192 | break |
|
192 | break | |
193 | end -= blocksize |
|
193 | end -= blocksize | |
194 | return None |
|
194 | return None | |
195 |
|
195 | |||
196 | def loadindex(self, i=None, end=None): |
|
196 | def loadindex(self, i=None, end=None): | |
197 | if self.all: return |
|
197 | if self.all: return | |
198 | all = False |
|
198 | all = False | |
199 | if i == None: |
|
199 | if i == None: | |
200 | blockstart = 0 |
|
200 | blockstart = 0 | |
201 | blocksize = (512 / self.s) * self.s |
|
201 | blocksize = (512 / self.s) * self.s | |
202 | end = self.datasize |
|
202 | end = self.datasize | |
203 | all = True |
|
203 | all = True | |
204 | else: |
|
204 | else: | |
205 | if end: |
|
205 | if end: | |
206 | blockstart = i * self.s |
|
206 | blockstart = i * self.s | |
207 | end = end * self.s |
|
207 | end = end * self.s | |
208 | blocksize = end - blockstart |
|
208 | blocksize = end - blockstart | |
209 | else: |
|
209 | else: | |
210 | blockstart = (i & ~63) * self.s |
|
210 | blockstart = (i & ~63) * self.s | |
211 | blocksize = self.s * 64 |
|
211 | blocksize = self.s * 64 | |
212 | end = blockstart + blocksize |
|
212 | end = blockstart + blocksize | |
213 | while blockstart < end: |
|
213 | while blockstart < end: | |
214 | self.loadblock(blockstart, blocksize) |
|
214 | self.loadblock(blockstart, blocksize) | |
215 | blockstart += blocksize |
|
215 | blockstart += blocksize | |
216 | if all: self.all = True |
|
216 | if all: self.all = True | |
217 |
|
217 | |||
218 | class lazyindex(object): |
|
218 | class lazyindex(object): | |
219 | """a lazy version of the index array""" |
|
219 | """a lazy version of the index array""" | |
220 | def __init__(self, parser): |
|
220 | def __init__(self, parser): | |
221 | self.p = parser |
|
221 | self.p = parser | |
222 | def __len__(self): |
|
222 | def __len__(self): | |
223 | return len(self.p.index) |
|
223 | return len(self.p.index) | |
224 | def load(self, pos): |
|
224 | def load(self, pos): | |
225 | if pos < 0: |
|
225 | if pos < 0: | |
226 | pos += len(self.p.index) |
|
226 | pos += len(self.p.index) | |
227 | self.p.loadindex(pos) |
|
227 | self.p.loadindex(pos) | |
228 | return self.p.index[pos] |
|
228 | return self.p.index[pos] | |
229 | def __getitem__(self, pos): |
|
229 | def __getitem__(self, pos): | |
230 | ret = self.p.index[pos] or self.load(pos) |
|
230 | ret = self.p.index[pos] or self.load(pos) | |
231 | if isinstance(ret, str): |
|
231 | if isinstance(ret, str): | |
232 | ret = struct.unpack(indexformatng, ret) |
|
232 | ret = struct.unpack(indexformatng, ret) | |
233 | return ret |
|
233 | return ret | |
234 | def __setitem__(self, pos, item): |
|
234 | def __setitem__(self, pos, item): | |
235 | self.p.index[pos] = item |
|
235 | self.p.index[pos] = item | |
236 | def __delitem__(self, pos): |
|
236 | def __delitem__(self, pos): | |
237 | del self.p.index[pos] |
|
237 | del self.p.index[pos] | |
238 | def append(self, e): |
|
238 | def append(self, e): | |
239 | self.p.index.append(e) |
|
239 | self.p.index.append(e) | |
240 |
|
240 | |||
241 | class lazymap(object): |
|
241 | class lazymap(object): | |
242 | """a lazy version of the node map""" |
|
242 | """a lazy version of the node map""" | |
243 | def __init__(self, parser): |
|
243 | def __init__(self, parser): | |
244 | self.p = parser |
|
244 | self.p = parser | |
245 | def load(self, key): |
|
245 | def load(self, key): | |
246 | n = self.p.findnode(key) |
|
246 | n = self.p.findnode(key) | |
247 | if n == None: |
|
247 | if n == None: | |
248 | raise KeyError(key) |
|
248 | raise KeyError(key) | |
249 | def __contains__(self, key): |
|
249 | def __contains__(self, key): | |
250 | if key in self.p.map: |
|
250 | if key in self.p.map: | |
251 | return True |
|
251 | return True | |
252 | self.p.loadmap() |
|
252 | self.p.loadmap() | |
253 | return key in self.p.map |
|
253 | return key in self.p.map | |
254 | def __iter__(self): |
|
254 | def __iter__(self): | |
255 | yield nullid |
|
255 | yield nullid | |
256 | for i in xrange(self.p.l): |
|
256 | for i in xrange(self.p.l): | |
257 | ret = self.p.index[i] |
|
257 | ret = self.p.index[i] | |
258 | if not ret: |
|
258 | if not ret: | |
259 | self.p.loadindex(i) |
|
259 | self.p.loadindex(i) | |
260 | ret = self.p.index[i] |
|
260 | ret = self.p.index[i] | |
261 | if isinstance(ret, str): |
|
261 | if isinstance(ret, str): | |
262 | ret = struct.unpack(indexformatng, ret) |
|
262 | ret = struct.unpack(indexformatng, ret) | |
263 | yield ret[-1] |
|
263 | yield ret[-1] | |
264 | def __getitem__(self, key): |
|
264 | def __getitem__(self, key): | |
265 | try: |
|
265 | try: | |
266 | return self.p.map[key] |
|
266 | return self.p.map[key] | |
267 | except KeyError: |
|
267 | except KeyError: | |
268 | try: |
|
268 | try: | |
269 | self.load(key) |
|
269 | self.load(key) | |
270 | return self.p.map[key] |
|
270 | return self.p.map[key] | |
271 | except KeyError: |
|
271 | except KeyError: | |
272 | raise KeyError("node " + hex(key)) |
|
272 | raise KeyError("node " + hex(key)) | |
273 | def __setitem__(self, key, val): |
|
273 | def __setitem__(self, key, val): | |
274 | self.p.map[key] = val |
|
274 | self.p.map[key] = val | |
275 | def __delitem__(self, key): |
|
275 | def __delitem__(self, key): | |
276 | del self.p.map[key] |
|
276 | del self.p.map[key] | |
277 |
|
277 | |||
278 | class RevlogError(Exception): pass |
|
278 | class RevlogError(Exception): pass | |
279 | class LookupError(RevlogError): pass |
|
279 | class LookupError(RevlogError): pass | |
280 |
|
280 | |||
281 | def getoffset(q): |
|
281 | def getoffset(q): | |
282 | if q & 0xFFFF: |
|
282 | if q & 0xFFFF: | |
283 | raise RevlogError(_('incompatible revision flag %x') % q) |
|
283 | raise RevlogError(_('incompatible revision flag %x') % q) | |
284 | return int(q >> 16) |
|
284 | return int(q >> 16) | |
285 |
|
285 | |||
286 | def gettype(q): |
|
286 | def gettype(q): | |
287 | return int(q & 0xFFFF) |
|
287 | return int(q & 0xFFFF) | |
288 |
|
288 | |||
289 | def offset_type(offset, type): |
|
289 | def offset_type(offset, type): | |
290 | return long(long(offset) << 16 | type) |
|
290 | return long(long(offset) << 16 | type) | |
291 |
|
291 | |||
292 | class revlogoldio(object): |
|
292 | class revlogoldio(object): | |
293 | def __init__(self): |
|
293 | def __init__(self): | |
294 | self.chunkcache = None |
|
294 | self.chunkcache = None | |
|
295 | self.size = struct.calcsize(indexformatv0) | |||
295 |
|
296 | |||
296 | def parseindex(self, fp, st, inline): |
|
297 | def parseindex(self, fp, st, inline): | |
297 | s = struct.calcsize(indexformatv0) |
|
298 | s = self.size | |
298 | index = [] |
|
299 | index = [] | |
299 | nodemap = {nullid: nullrev} |
|
300 | nodemap = {nullid: nullrev} | |
300 | n = off = 0 |
|
301 | n = off = 0 | |
301 | data = fp.read() |
|
302 | data = fp.read() | |
302 | l = len(data) |
|
303 | l = len(data) | |
303 | while off + s <= l: |
|
304 | while off + s <= l: | |
304 | cur = data[off:off + s] |
|
305 | cur = data[off:off + s] | |
305 | off += s |
|
306 | off += s | |
306 | e = struct.unpack(indexformatv0, cur) |
|
307 | e = struct.unpack(indexformatv0, cur) | |
307 | index.append(e) |
|
308 | # transform to revlogv1 format | |
308 | nodemap[e[-1]] = n |
|
309 | e2 = (offset_type(e[0], 0), e[1], -1, e[2], e[3], | |
|
310 | nodemap[e[4]], nodemap[e[5]], e[6]) | |||
|
311 | index.append(e2) | |||
|
312 | nodemap[e[6]] = n | |||
309 | n += 1 |
|
313 | n += 1 | |
310 |
|
314 | |||
311 | return index, nodemap |
|
315 | return index, nodemap | |
312 |
|
316 | |||
313 | class revlogio(object): |
|
317 | class revlogio(object): | |
314 | def __init__(self): |
|
318 | def __init__(self): | |
315 | self.chunkcache = None |
|
319 | self.chunkcache = None | |
|
320 | self.size = struct.calcsize(indexformatng) | |||
316 |
|
321 | |||
317 | def parseindex(self, fp, st, inline): |
|
322 | def parseindex(self, fp, st, inline): | |
318 | if (lazyparser.safe_to_use and not inline and |
|
323 | if (lazyparser.safe_to_use and not inline and | |
319 | st and st.st_size > 1000000): |
|
324 | st and st.st_size > 1000000): | |
320 | # big index, let's parse it on demand |
|
325 | # big index, let's parse it on demand | |
321 | parser = lazyparser(fp, st.st_size) |
|
326 | parser = lazyparser(fp, st.st_size) | |
322 | index = lazyindex(parser) |
|
327 | index = lazyindex(parser) | |
323 | nodemap = lazymap(parser) |
|
328 | nodemap = lazymap(parser) | |
324 | e = list(index[0]) |
|
329 | e = list(index[0]) | |
325 | type = gettype(e[0]) |
|
330 | type = gettype(e[0]) | |
326 | e[0] = offset_type(0, type) |
|
331 | e[0] = offset_type(0, type) | |
327 | index[0] = e |
|
332 | index[0] = e | |
328 | return index, nodemap |
|
333 | return index, nodemap | |
329 |
|
334 | |||
330 | s = struct.calcsize(indexformatng) |
|
335 | s = self.size | |
331 | index = [] |
|
336 | index = [] | |
332 | nodemap = {nullid: nullrev} |
|
337 | nodemap = {nullid: nullrev} | |
333 | n = off = 0 |
|
338 | n = off = 0 | |
334 | # if we're not using lazymap, always read the whole index |
|
339 | # if we're not using lazymap, always read the whole index | |
335 | data = fp.read() |
|
340 | data = fp.read() | |
336 | l = len(data) |
|
341 | l = len(data) | |
337 | if inline: |
|
342 | if inline: | |
338 | self.chunkcache = (0, data) |
|
343 | self.chunkcache = (0, data) | |
339 | while off + s <= l: |
|
344 | while off + s <= l: | |
340 | e = struct.unpack(indexformatng, data[off:off + s]) |
|
345 | e = struct.unpack(indexformatng, data[off:off + s]) | |
341 | index.append(e) |
|
346 | index.append(e) | |
342 | nodemap[e[-1]] = n |
|
347 | nodemap[e[-1]] = n | |
343 | n += 1 |
|
348 | n += 1 | |
344 | off += s |
|
349 | off += s | |
345 | if inline: |
|
350 | if inline: | |
346 | if e[1] < 0: |
|
351 | if e[1] < 0: | |
347 | break |
|
352 | break | |
348 | off += e[1] |
|
353 | off += e[1] | |
349 |
|
354 | |||
350 | e = list(index[0]) |
|
355 | e = list(index[0]) | |
351 | type = gettype(e[0]) |
|
356 | type = gettype(e[0]) | |
352 | e[0] = offset_type(0, type) |
|
357 | e[0] = offset_type(0, type) | |
353 | index[0] = e |
|
358 | index[0] = e | |
354 |
|
359 | |||
355 | return index, nodemap |
|
360 | return index, nodemap | |
356 |
|
361 | |||
357 | class revlog(object): |
|
362 | class revlog(object): | |
358 | """ |
|
363 | """ | |
359 | the underlying revision storage object |
|
364 | the underlying revision storage object | |
360 |
|
365 | |||
361 | A revlog consists of two parts, an index and the revision data. |
|
366 | A revlog consists of two parts, an index and the revision data. | |
362 |
|
367 | |||
363 | The index is a file with a fixed record size containing |
|
368 | The index is a file with a fixed record size containing | |
364 | information on each revision, includings its nodeid (hash), the |
|
369 | information on each revision, includings its nodeid (hash), the | |
365 | nodeids of its parents, the position and offset of its data within |
|
370 | nodeids of its parents, the position and offset of its data within | |
366 | the data file, and the revision it's based on. Finally, each entry |
|
371 | the data file, and the revision it's based on. Finally, each entry | |
367 | contains a linkrev entry that can serve as a pointer to external |
|
372 | contains a linkrev entry that can serve as a pointer to external | |
368 | data. |
|
373 | data. | |
369 |
|
374 | |||
370 | The revision data itself is a linear collection of data chunks. |
|
375 | The revision data itself is a linear collection of data chunks. | |
371 | Each chunk represents a revision and is usually represented as a |
|
376 | Each chunk represents a revision and is usually represented as a | |
372 | delta against the previous chunk. To bound lookup time, runs of |
|
377 | delta against the previous chunk. To bound lookup time, runs of | |
373 | deltas are limited to about 2 times the length of the original |
|
378 | deltas are limited to about 2 times the length of the original | |
374 | version data. This makes retrieval of a version proportional to |
|
379 | version data. This makes retrieval of a version proportional to | |
375 | its size, or O(1) relative to the number of revisions. |
|
380 | its size, or O(1) relative to the number of revisions. | |
376 |
|
381 | |||
377 | Both pieces of the revlog are written to in an append-only |
|
382 | Both pieces of the revlog are written to in an append-only | |
378 | fashion, which means we never need to rewrite a file to insert or |
|
383 | fashion, which means we never need to rewrite a file to insert or | |
379 | remove data, and can use some simple techniques to avoid the need |
|
384 | remove data, and can use some simple techniques to avoid the need | |
380 | for locking while reading. |
|
385 | for locking while reading. | |
381 | """ |
|
386 | """ | |
382 | def __init__(self, opener, indexfile): |
|
387 | def __init__(self, opener, indexfile): | |
383 | """ |
|
388 | """ | |
384 | create a revlog object |
|
389 | create a revlog object | |
385 |
|
390 | |||
386 | opener is a function that abstracts the file opening operation |
|
391 | opener is a function that abstracts the file opening operation | |
387 | and can be used to implement COW semantics or the like. |
|
392 | and can be used to implement COW semantics or the like. | |
388 | """ |
|
393 | """ | |
389 | self.indexfile = indexfile |
|
394 | self.indexfile = indexfile | |
390 | self.datafile = indexfile[:-2] + ".d" |
|
395 | self.datafile = indexfile[:-2] + ".d" | |
391 | self.opener = opener |
|
396 | self.opener = opener | |
392 |
|
397 | |||
393 | self.indexstat = None |
|
398 | self.indexstat = None | |
394 | self.cache = None |
|
399 | self.cache = None | |
395 | self.defversion = REVLOG_DEFAULT_VERSION |
|
400 | self.defversion = REVLOG_DEFAULT_VERSION | |
396 | if hasattr(opener, "defversion"): |
|
401 | if hasattr(opener, "defversion"): | |
397 | self.defversion = opener.defversion |
|
402 | self.defversion = opener.defversion | |
398 | if self.defversion & REVLOGNG: |
|
403 | if self.defversion & REVLOGNG: | |
399 | self.defversion |= REVLOGNGINLINEDATA |
|
404 | self.defversion |= REVLOGNGINLINEDATA | |
400 | self._load() |
|
405 | self._load() | |
401 |
|
406 | |||
402 | def _load(self): |
|
407 | def _load(self): | |
403 | v = self.defversion |
|
408 | v = self.defversion | |
404 | try: |
|
409 | try: | |
405 | f = self.opener(self.indexfile) |
|
410 | f = self.opener(self.indexfile) | |
406 | i = f.read(4) |
|
411 | i = f.read(4) | |
407 | f.seek(0) |
|
412 | f.seek(0) | |
408 | if len(i) > 0: |
|
413 | if len(i) > 0: | |
409 | v = struct.unpack(versionformat, i)[0] |
|
414 | v = struct.unpack(versionformat, i)[0] | |
410 | except IOError, inst: |
|
415 | except IOError, inst: | |
411 | if inst.errno != errno.ENOENT: |
|
416 | if inst.errno != errno.ENOENT: | |
412 | raise |
|
417 | raise | |
413 | i = "" |
|
418 | i = "" | |
414 | else: |
|
419 | else: | |
415 | try: |
|
420 | try: | |
416 | st = util.fstat(f) |
|
421 | st = util.fstat(f) | |
417 | except AttributeError, inst: |
|
422 | except AttributeError, inst: | |
418 | st = None |
|
423 | st = None | |
419 | else: |
|
424 | else: | |
420 | oldst = self.indexstat |
|
425 | oldst = self.indexstat | |
421 | if (oldst and st.st_dev == oldst.st_dev |
|
426 | if (oldst and st.st_dev == oldst.st_dev | |
422 | and st.st_ino == oldst.st_ino |
|
427 | and st.st_ino == oldst.st_ino | |
423 | and st.st_mtime == oldst.st_mtime |
|
428 | and st.st_mtime == oldst.st_mtime | |
424 | and st.st_ctime == oldst.st_ctime |
|
429 | and st.st_ctime == oldst.st_ctime | |
425 | and st.st_size == oldst.st_size): |
|
430 | and st.st_size == oldst.st_size): | |
426 | return |
|
431 | return | |
427 | self.indexstat = st |
|
432 | self.indexstat = st | |
428 | flags = v & ~0xFFFF |
|
433 | flags = v & ~0xFFFF | |
429 | fmt = v & 0xFFFF |
|
434 | fmt = v & 0xFFFF | |
430 | if fmt == REVLOGV0: |
|
435 | if fmt == REVLOGV0: | |
431 | if flags: |
|
436 | if flags: | |
432 | raise RevlogError(_("index %s unknown flags %#04x for format v0") |
|
437 | raise RevlogError(_("index %s unknown flags %#04x for format v0") | |
433 | % (self.indexfile, flags >> 16)) |
|
438 | % (self.indexfile, flags >> 16)) | |
434 | elif fmt == REVLOGNG: |
|
439 | elif fmt == REVLOGNG: | |
435 | if flags & ~REVLOGNGINLINEDATA: |
|
440 | if flags & ~REVLOGNGINLINEDATA: | |
436 | raise RevlogError(_("index %s unknown flags %#04x for revlogng") |
|
441 | raise RevlogError(_("index %s unknown flags %#04x for revlogng") | |
437 | % (self.indexfile, flags >> 16)) |
|
442 | % (self.indexfile, flags >> 16)) | |
438 | else: |
|
443 | else: | |
439 | raise RevlogError(_("index %s unknown format %d") |
|
444 | raise RevlogError(_("index %s unknown format %d") | |
440 | % (self.indexfile, fmt)) |
|
445 | % (self.indexfile, fmt)) | |
441 | self.version = v |
|
446 | self.version = v | |
442 | self.nodemap = {nullid: nullrev} |
|
447 | self.nodemap = {nullid: nullrev} | |
443 | self.index = [] |
|
448 | self.index = [] | |
444 | self._io = revlogio() |
|
449 | self._io = revlogio() | |
445 | self.indexformat = indexformatng |
|
|||
446 | if self.version == REVLOGV0: |
|
450 | if self.version == REVLOGV0: | |
447 | self._io = revlogoldio() |
|
451 | self._io = revlogoldio() | |
448 | self.indexformat = indexformatv0 |
|
|||
449 | if i: |
|
452 | if i: | |
450 | self.index, self.nodemap = self._io.parseindex(f, st, self._inline()) |
|
453 | self.index, self.nodemap = self._io.parseindex(f, st, self._inline()) | |
451 |
|
454 | |||
452 | def _loadindex(self, start, end): |
|
455 | def _loadindex(self, start, end): | |
453 | """load a block of indexes all at once from the lazy parser""" |
|
456 | """load a block of indexes all at once from the lazy parser""" | |
454 | if isinstance(self.index, lazyindex): |
|
457 | if isinstance(self.index, lazyindex): | |
455 | self.index.p.loadindex(start, end) |
|
458 | self.index.p.loadindex(start, end) | |
456 |
|
459 | |||
457 | def _loadindexmap(self): |
|
460 | def _loadindexmap(self): | |
458 | """loads both the map and the index from the lazy parser""" |
|
461 | """loads both the map and the index from the lazy parser""" | |
459 | if isinstance(self.index, lazyindex): |
|
462 | if isinstance(self.index, lazyindex): | |
460 | p = self.index.p |
|
463 | p = self.index.p | |
461 | p.loadindex() |
|
464 | p.loadindex() | |
462 | self.nodemap = p.map |
|
465 | self.nodemap = p.map | |
463 |
|
466 | |||
464 | def _loadmap(self): |
|
467 | def _loadmap(self): | |
465 | """loads the map from the lazy parser""" |
|
468 | """loads the map from the lazy parser""" | |
466 | if isinstance(self.nodemap, lazymap): |
|
469 | if isinstance(self.nodemap, lazymap): | |
467 | self.nodemap.p.loadmap() |
|
470 | self.nodemap.p.loadmap() | |
468 | self.nodemap = self.nodemap.p.map |
|
471 | self.nodemap = self.nodemap.p.map | |
469 |
|
472 | |||
470 | def _inline(self): return self.version & REVLOGNGINLINEDATA |
|
473 | def _inline(self): return self.version & REVLOGNGINLINEDATA | |
471 |
|
474 | |||
472 | def tip(self): return self.node(len(self.index) - 1) |
|
475 | def tip(self): return self.node(len(self.index) - 1) | |
473 | def count(self): return len(self.index) |
|
476 | def count(self): return len(self.index) | |
474 | def node(self, rev): |
|
477 | def node(self, rev): | |
475 | return rev == nullrev and nullid or self.index[rev][-1] |
|
478 | return rev == nullrev and nullid or self.index[rev][-1] | |
476 | def rev(self, node): |
|
479 | def rev(self, node): | |
477 | try: |
|
480 | try: | |
478 | return self.nodemap[node] |
|
481 | return self.nodemap[node] | |
479 | except KeyError: |
|
482 | except KeyError: | |
480 | raise LookupError(_('%s: no node %s') % (self.indexfile, hex(node))) |
|
483 | raise LookupError(_('%s: no node %s') % (self.indexfile, hex(node))) | |
481 | def linkrev(self, node): |
|
484 | def linkrev(self, node): | |
482 | return (node == nullid) and nullrev or self.index[self.rev(node)][-4] |
|
485 | return (node == nullid) and nullrev or self.index[self.rev(node)][-4] | |
483 | def parents(self, node): |
|
486 | def parents(self, node): | |
484 | if node == nullid: return (nullid, nullid) |
|
487 | if node == nullid: return (nullid, nullid) | |
485 | r = self.rev(node) |
|
488 | r = self.rev(node) | |
486 | d = self.index[r][-3:-1] |
|
489 | d = self.index[r][-3:-1] | |
487 | if self.version == REVLOGV0: |
|
|||
488 | return d |
|
|||
489 | return (self.node(d[0]), self.node(d[1])) |
|
490 | return (self.node(d[0]), self.node(d[1])) | |
490 | def parentrevs(self, rev): |
|
491 | def parentrevs(self, rev): | |
491 | if rev == nullrev: |
|
492 | if rev == nullrev: | |
492 | return (nullrev, nullrev) |
|
493 | return (nullrev, nullrev) | |
493 | d = self.index[rev][-3:-1] |
|
494 | d = self.index[rev][-3:-1] | |
494 | if self.version == REVLOGV0: |
|
|||
495 | return (self.rev(d[0]), self.rev(d[1])) |
|
|||
496 | return d |
|
495 | return d | |
497 | def start(self, rev): |
|
496 | def start(self, rev): | |
498 | if rev == nullrev: |
|
497 | if rev == nullrev: | |
499 | return 0 |
|
498 | return 0 | |
500 | if self.version != REVLOGV0: |
|
|||
501 |
|
|
499 | return getoffset(self.index[rev][0]) | |
502 | return self.index[rev][0] |
|
|||
503 |
|
500 | |||
504 | def end(self, rev): return self.start(rev) + self.length(rev) |
|
501 | def end(self, rev): return self.start(rev) + self.length(rev) | |
505 |
|
502 | |||
506 | def size(self, rev): |
|
503 | def size(self, rev): | |
507 | """return the length of the uncompressed text for a given revision""" |
|
504 | """return the length of the uncompressed text for a given revision""" | |
508 | if rev == nullrev: |
|
505 | if rev == nullrev: | |
509 | return 0 |
|
506 | return 0 | |
510 | l = -1 |
|
|||
511 | if self.version != REVLOGV0: |
|
|||
512 |
|
|
507 | l = self.index[rev][2] | |
513 | if l >= 0: |
|
508 | if l >= 0: | |
514 | return l |
|
509 | return l | |
515 |
|
510 | |||
516 | t = self.revision(self.node(rev)) |
|
511 | t = self.revision(self.node(rev)) | |
517 | return len(t) |
|
512 | return len(t) | |
518 |
|
513 | |||
519 | # alternate implementation, The advantage to this code is it |
|
514 | # alternate implementation, The advantage to this code is it | |
520 | # will be faster for a single revision. But, the results are not |
|
515 | # will be faster for a single revision. But, the results are not | |
521 | # cached, so finding the size of every revision will be slower. |
|
516 | # cached, so finding the size of every revision will be slower. | |
522 | """ |
|
517 | """ | |
523 | if self.cache and self.cache[1] == rev: |
|
518 | if self.cache and self.cache[1] == rev: | |
524 | return len(self.cache[2]) |
|
519 | return len(self.cache[2]) | |
525 |
|
520 | |||
526 | base = self.base(rev) |
|
521 | base = self.base(rev) | |
527 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
|
522 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: | |
528 | base = self.cache[1] |
|
523 | base = self.cache[1] | |
529 | text = self.cache[2] |
|
524 | text = self.cache[2] | |
530 | else: |
|
525 | else: | |
531 | text = self.revision(self.node(base)) |
|
526 | text = self.revision(self.node(base)) | |
532 |
|
527 | |||
533 | l = len(text) |
|
528 | l = len(text) | |
534 | for x in xrange(base + 1, rev + 1): |
|
529 | for x in xrange(base + 1, rev + 1): | |
535 | l = mdiff.patchedsize(l, self.chunk(x)) |
|
530 | l = mdiff.patchedsize(l, self.chunk(x)) | |
536 | return l |
|
531 | return l | |
537 | """ |
|
532 | """ | |
538 |
|
533 | |||
539 | def length(self, rev): |
|
534 | def length(self, rev): | |
540 | if rev == nullrev: |
|
535 | if rev == nullrev: | |
541 | return 0 |
|
536 | return 0 | |
542 | else: |
|
537 | else: | |
543 | return self.index[rev][1] |
|
538 | return self.index[rev][1] | |
544 | def base(self, rev): |
|
539 | def base(self, rev): | |
545 | if (rev == nullrev): |
|
540 | if (rev == nullrev): | |
546 | return nullrev |
|
541 | return nullrev | |
547 | else: |
|
542 | else: | |
548 | return self.index[rev][-5] |
|
543 | return self.index[rev][-5] | |
549 |
|
544 | |||
550 | def reachable(self, node, stop=None): |
|
545 | def reachable(self, node, stop=None): | |
551 | """return a hash of all nodes ancestral to a given node, including |
|
546 | """return a hash of all nodes ancestral to a given node, including | |
552 | the node itself, stopping when stop is matched""" |
|
547 | the node itself, stopping when stop is matched""" | |
553 | reachable = {} |
|
548 | reachable = {} | |
554 | visit = [node] |
|
549 | visit = [node] | |
555 | reachable[node] = 1 |
|
550 | reachable[node] = 1 | |
556 | if stop: |
|
551 | if stop: | |
557 | stopn = self.rev(stop) |
|
552 | stopn = self.rev(stop) | |
558 | else: |
|
553 | else: | |
559 | stopn = 0 |
|
554 | stopn = 0 | |
560 | while visit: |
|
555 | while visit: | |
561 | n = visit.pop(0) |
|
556 | n = visit.pop(0) | |
562 | if n == stop: |
|
557 | if n == stop: | |
563 | continue |
|
558 | continue | |
564 | if n == nullid: |
|
559 | if n == nullid: | |
565 | continue |
|
560 | continue | |
566 | for p in self.parents(n): |
|
561 | for p in self.parents(n): | |
567 | if self.rev(p) < stopn: |
|
562 | if self.rev(p) < stopn: | |
568 | continue |
|
563 | continue | |
569 | if p not in reachable: |
|
564 | if p not in reachable: | |
570 | reachable[p] = 1 |
|
565 | reachable[p] = 1 | |
571 | visit.append(p) |
|
566 | visit.append(p) | |
572 | return reachable |
|
567 | return reachable | |
573 |
|
568 | |||
574 | def nodesbetween(self, roots=None, heads=None): |
|
569 | def nodesbetween(self, roots=None, heads=None): | |
575 | """Return a tuple containing three elements. Elements 1 and 2 contain |
|
570 | """Return a tuple containing three elements. Elements 1 and 2 contain | |
576 | a final list bases and heads after all the unreachable ones have been |
|
571 | a final list bases and heads after all the unreachable ones have been | |
577 | pruned. Element 0 contains a topologically sorted list of all |
|
572 | pruned. Element 0 contains a topologically sorted list of all | |
578 |
|
573 | |||
579 | nodes that satisfy these constraints: |
|
574 | nodes that satisfy these constraints: | |
580 | 1. All nodes must be descended from a node in roots (the nodes on |
|
575 | 1. All nodes must be descended from a node in roots (the nodes on | |
581 | roots are considered descended from themselves). |
|
576 | roots are considered descended from themselves). | |
582 | 2. All nodes must also be ancestors of a node in heads (the nodes in |
|
577 | 2. All nodes must also be ancestors of a node in heads (the nodes in | |
583 | heads are considered to be their own ancestors). |
|
578 | heads are considered to be their own ancestors). | |
584 |
|
579 | |||
585 | If roots is unspecified, nullid is assumed as the only root. |
|
580 | If roots is unspecified, nullid is assumed as the only root. | |
586 | If heads is unspecified, it is taken to be the output of the |
|
581 | If heads is unspecified, it is taken to be the output of the | |
587 | heads method (i.e. a list of all nodes in the repository that |
|
582 | heads method (i.e. a list of all nodes in the repository that | |
588 | have no children).""" |
|
583 | have no children).""" | |
589 | nonodes = ([], [], []) |
|
584 | nonodes = ([], [], []) | |
590 | if roots is not None: |
|
585 | if roots is not None: | |
591 | roots = list(roots) |
|
586 | roots = list(roots) | |
592 | if not roots: |
|
587 | if not roots: | |
593 | return nonodes |
|
588 | return nonodes | |
594 | lowestrev = min([self.rev(n) for n in roots]) |
|
589 | lowestrev = min([self.rev(n) for n in roots]) | |
595 | else: |
|
590 | else: | |
596 | roots = [nullid] # Everybody's a descendent of nullid |
|
591 | roots = [nullid] # Everybody's a descendent of nullid | |
597 | lowestrev = nullrev |
|
592 | lowestrev = nullrev | |
598 | if (lowestrev == nullrev) and (heads is None): |
|
593 | if (lowestrev == nullrev) and (heads is None): | |
599 | # We want _all_ the nodes! |
|
594 | # We want _all_ the nodes! | |
600 | return ([self.node(r) for r in xrange(0, self.count())], |
|
595 | return ([self.node(r) for r in xrange(0, self.count())], | |
601 | [nullid], list(self.heads())) |
|
596 | [nullid], list(self.heads())) | |
602 | if heads is None: |
|
597 | if heads is None: | |
603 | # All nodes are ancestors, so the latest ancestor is the last |
|
598 | # All nodes are ancestors, so the latest ancestor is the last | |
604 | # node. |
|
599 | # node. | |
605 | highestrev = self.count() - 1 |
|
600 | highestrev = self.count() - 1 | |
606 | # Set ancestors to None to signal that every node is an ancestor. |
|
601 | # Set ancestors to None to signal that every node is an ancestor. | |
607 | ancestors = None |
|
602 | ancestors = None | |
608 | # Set heads to an empty dictionary for later discovery of heads |
|
603 | # Set heads to an empty dictionary for later discovery of heads | |
609 | heads = {} |
|
604 | heads = {} | |
610 | else: |
|
605 | else: | |
611 | heads = list(heads) |
|
606 | heads = list(heads) | |
612 | if not heads: |
|
607 | if not heads: | |
613 | return nonodes |
|
608 | return nonodes | |
614 | ancestors = {} |
|
609 | ancestors = {} | |
615 | # Turn heads into a dictionary so we can remove 'fake' heads. |
|
610 | # Turn heads into a dictionary so we can remove 'fake' heads. | |
616 | # Also, later we will be using it to filter out the heads we can't |
|
611 | # Also, later we will be using it to filter out the heads we can't | |
617 | # find from roots. |
|
612 | # find from roots. | |
618 | heads = dict.fromkeys(heads, 0) |
|
613 | heads = dict.fromkeys(heads, 0) | |
619 | # Start at the top and keep marking parents until we're done. |
|
614 | # Start at the top and keep marking parents until we're done. | |
620 | nodestotag = heads.keys() |
|
615 | nodestotag = heads.keys() | |
621 | # Remember where the top was so we can use it as a limit later. |
|
616 | # Remember where the top was so we can use it as a limit later. | |
622 | highestrev = max([self.rev(n) for n in nodestotag]) |
|
617 | highestrev = max([self.rev(n) for n in nodestotag]) | |
623 | while nodestotag: |
|
618 | while nodestotag: | |
624 | # grab a node to tag |
|
619 | # grab a node to tag | |
625 | n = nodestotag.pop() |
|
620 | n = nodestotag.pop() | |
626 | # Never tag nullid |
|
621 | # Never tag nullid | |
627 | if n == nullid: |
|
622 | if n == nullid: | |
628 | continue |
|
623 | continue | |
629 | # A node's revision number represents its place in a |
|
624 | # A node's revision number represents its place in a | |
630 | # topologically sorted list of nodes. |
|
625 | # topologically sorted list of nodes. | |
631 | r = self.rev(n) |
|
626 | r = self.rev(n) | |
632 | if r >= lowestrev: |
|
627 | if r >= lowestrev: | |
633 | if n not in ancestors: |
|
628 | if n not in ancestors: | |
634 | # If we are possibly a descendent of one of the roots |
|
629 | # If we are possibly a descendent of one of the roots | |
635 | # and we haven't already been marked as an ancestor |
|
630 | # and we haven't already been marked as an ancestor | |
636 | ancestors[n] = 1 # Mark as ancestor |
|
631 | ancestors[n] = 1 # Mark as ancestor | |
637 | # Add non-nullid parents to list of nodes to tag. |
|
632 | # Add non-nullid parents to list of nodes to tag. | |
638 | nodestotag.extend([p for p in self.parents(n) if |
|
633 | nodestotag.extend([p for p in self.parents(n) if | |
639 | p != nullid]) |
|
634 | p != nullid]) | |
640 | elif n in heads: # We've seen it before, is it a fake head? |
|
635 | elif n in heads: # We've seen it before, is it a fake head? | |
641 | # So it is, real heads should not be the ancestors of |
|
636 | # So it is, real heads should not be the ancestors of | |
642 | # any other heads. |
|
637 | # any other heads. | |
643 | heads.pop(n) |
|
638 | heads.pop(n) | |
644 | if not ancestors: |
|
639 | if not ancestors: | |
645 | return nonodes |
|
640 | return nonodes | |
646 | # Now that we have our set of ancestors, we want to remove any |
|
641 | # Now that we have our set of ancestors, we want to remove any | |
647 | # roots that are not ancestors. |
|
642 | # roots that are not ancestors. | |
648 |
|
643 | |||
649 | # If one of the roots was nullid, everything is included anyway. |
|
644 | # If one of the roots was nullid, everything is included anyway. | |
650 | if lowestrev > nullrev: |
|
645 | if lowestrev > nullrev: | |
651 | # But, since we weren't, let's recompute the lowest rev to not |
|
646 | # But, since we weren't, let's recompute the lowest rev to not | |
652 | # include roots that aren't ancestors. |
|
647 | # include roots that aren't ancestors. | |
653 |
|
648 | |||
654 | # Filter out roots that aren't ancestors of heads |
|
649 | # Filter out roots that aren't ancestors of heads | |
655 | roots = [n for n in roots if n in ancestors] |
|
650 | roots = [n for n in roots if n in ancestors] | |
656 | # Recompute the lowest revision |
|
651 | # Recompute the lowest revision | |
657 | if roots: |
|
652 | if roots: | |
658 | lowestrev = min([self.rev(n) for n in roots]) |
|
653 | lowestrev = min([self.rev(n) for n in roots]) | |
659 | else: |
|
654 | else: | |
660 | # No more roots? Return empty list |
|
655 | # No more roots? Return empty list | |
661 | return nonodes |
|
656 | return nonodes | |
662 | else: |
|
657 | else: | |
663 | # We are descending from nullid, and don't need to care about |
|
658 | # We are descending from nullid, and don't need to care about | |
664 | # any other roots. |
|
659 | # any other roots. | |
665 | lowestrev = nullrev |
|
660 | lowestrev = nullrev | |
666 | roots = [nullid] |
|
661 | roots = [nullid] | |
667 | # Transform our roots list into a 'set' (i.e. a dictionary where the |
|
662 | # Transform our roots list into a 'set' (i.e. a dictionary where the | |
668 | # values don't matter. |
|
663 | # values don't matter. | |
669 | descendents = dict.fromkeys(roots, 1) |
|
664 | descendents = dict.fromkeys(roots, 1) | |
670 | # Also, keep the original roots so we can filter out roots that aren't |
|
665 | # Also, keep the original roots so we can filter out roots that aren't | |
671 | # 'real' roots (i.e. are descended from other roots). |
|
666 | # 'real' roots (i.e. are descended from other roots). | |
672 | roots = descendents.copy() |
|
667 | roots = descendents.copy() | |
673 | # Our topologically sorted list of output nodes. |
|
668 | # Our topologically sorted list of output nodes. | |
674 | orderedout = [] |
|
669 | orderedout = [] | |
675 | # Don't start at nullid since we don't want nullid in our output list, |
|
670 | # Don't start at nullid since we don't want nullid in our output list, | |
676 | # and if nullid shows up in descedents, empty parents will look like |
|
671 | # and if nullid shows up in descedents, empty parents will look like | |
677 | # they're descendents. |
|
672 | # they're descendents. | |
678 | for r in xrange(max(lowestrev, 0), highestrev + 1): |
|
673 | for r in xrange(max(lowestrev, 0), highestrev + 1): | |
679 | n = self.node(r) |
|
674 | n = self.node(r) | |
680 | isdescendent = False |
|
675 | isdescendent = False | |
681 | if lowestrev == nullrev: # Everybody is a descendent of nullid |
|
676 | if lowestrev == nullrev: # Everybody is a descendent of nullid | |
682 | isdescendent = True |
|
677 | isdescendent = True | |
683 | elif n in descendents: |
|
678 | elif n in descendents: | |
684 | # n is already a descendent |
|
679 | # n is already a descendent | |
685 | isdescendent = True |
|
680 | isdescendent = True | |
686 | # This check only needs to be done here because all the roots |
|
681 | # This check only needs to be done here because all the roots | |
687 | # will start being marked is descendents before the loop. |
|
682 | # will start being marked is descendents before the loop. | |
688 | if n in roots: |
|
683 | if n in roots: | |
689 | # If n was a root, check if it's a 'real' root. |
|
684 | # If n was a root, check if it's a 'real' root. | |
690 | p = tuple(self.parents(n)) |
|
685 | p = tuple(self.parents(n)) | |
691 | # If any of its parents are descendents, it's not a root. |
|
686 | # If any of its parents are descendents, it's not a root. | |
692 | if (p[0] in descendents) or (p[1] in descendents): |
|
687 | if (p[0] in descendents) or (p[1] in descendents): | |
693 | roots.pop(n) |
|
688 | roots.pop(n) | |
694 | else: |
|
689 | else: | |
695 | p = tuple(self.parents(n)) |
|
690 | p = tuple(self.parents(n)) | |
696 | # A node is a descendent if either of its parents are |
|
691 | # A node is a descendent if either of its parents are | |
697 | # descendents. (We seeded the dependents list with the roots |
|
692 | # descendents. (We seeded the dependents list with the roots | |
698 | # up there, remember?) |
|
693 | # up there, remember?) | |
699 | if (p[0] in descendents) or (p[1] in descendents): |
|
694 | if (p[0] in descendents) or (p[1] in descendents): | |
700 | descendents[n] = 1 |
|
695 | descendents[n] = 1 | |
701 | isdescendent = True |
|
696 | isdescendent = True | |
702 | if isdescendent and ((ancestors is None) or (n in ancestors)): |
|
697 | if isdescendent and ((ancestors is None) or (n in ancestors)): | |
703 | # Only include nodes that are both descendents and ancestors. |
|
698 | # Only include nodes that are both descendents and ancestors. | |
704 | orderedout.append(n) |
|
699 | orderedout.append(n) | |
705 | if (ancestors is not None) and (n in heads): |
|
700 | if (ancestors is not None) and (n in heads): | |
706 | # We're trying to figure out which heads are reachable |
|
701 | # We're trying to figure out which heads are reachable | |
707 | # from roots. |
|
702 | # from roots. | |
708 | # Mark this head as having been reached |
|
703 | # Mark this head as having been reached | |
709 | heads[n] = 1 |
|
704 | heads[n] = 1 | |
710 | elif ancestors is None: |
|
705 | elif ancestors is None: | |
711 | # Otherwise, we're trying to discover the heads. |
|
706 | # Otherwise, we're trying to discover the heads. | |
712 | # Assume this is a head because if it isn't, the next step |
|
707 | # Assume this is a head because if it isn't, the next step | |
713 | # will eventually remove it. |
|
708 | # will eventually remove it. | |
714 | heads[n] = 1 |
|
709 | heads[n] = 1 | |
715 | # But, obviously its parents aren't. |
|
710 | # But, obviously its parents aren't. | |
716 | for p in self.parents(n): |
|
711 | for p in self.parents(n): | |
717 | heads.pop(p, None) |
|
712 | heads.pop(p, None) | |
718 | heads = [n for n in heads.iterkeys() if heads[n] != 0] |
|
713 | heads = [n for n in heads.iterkeys() if heads[n] != 0] | |
719 | roots = roots.keys() |
|
714 | roots = roots.keys() | |
720 | assert orderedout |
|
715 | assert orderedout | |
721 | assert roots |
|
716 | assert roots | |
722 | assert heads |
|
717 | assert heads | |
723 | return (orderedout, roots, heads) |
|
718 | return (orderedout, roots, heads) | |
724 |
|
719 | |||
725 | def heads(self, start=None, stop=None): |
|
720 | def heads(self, start=None, stop=None): | |
726 | """return the list of all nodes that have no children |
|
721 | """return the list of all nodes that have no children | |
727 |
|
722 | |||
728 | if start is specified, only heads that are descendants of |
|
723 | if start is specified, only heads that are descendants of | |
729 | start will be returned |
|
724 | start will be returned | |
730 | if stop is specified, it will consider all the revs from stop |
|
725 | if stop is specified, it will consider all the revs from stop | |
731 | as if they had no children |
|
726 | as if they had no children | |
732 | """ |
|
727 | """ | |
733 | if start is None: |
|
728 | if start is None: | |
734 | start = nullid |
|
729 | start = nullid | |
735 | if stop is None: |
|
730 | if stop is None: | |
736 | stop = [] |
|
731 | stop = [] | |
737 | stoprevs = dict.fromkeys([self.rev(n) for n in stop]) |
|
732 | stoprevs = dict.fromkeys([self.rev(n) for n in stop]) | |
738 | startrev = self.rev(start) |
|
733 | startrev = self.rev(start) | |
739 | reachable = {startrev: 1} |
|
734 | reachable = {startrev: 1} | |
740 | heads = {startrev: 1} |
|
735 | heads = {startrev: 1} | |
741 |
|
736 | |||
742 | parentrevs = self.parentrevs |
|
737 | parentrevs = self.parentrevs | |
743 | for r in xrange(startrev + 1, self.count()): |
|
738 | for r in xrange(startrev + 1, self.count()): | |
744 | for p in parentrevs(r): |
|
739 | for p in parentrevs(r): | |
745 | if p in reachable: |
|
740 | if p in reachable: | |
746 | if r not in stoprevs: |
|
741 | if r not in stoprevs: | |
747 | reachable[r] = 1 |
|
742 | reachable[r] = 1 | |
748 | heads[r] = 1 |
|
743 | heads[r] = 1 | |
749 | if p in heads and p not in stoprevs: |
|
744 | if p in heads and p not in stoprevs: | |
750 | del heads[p] |
|
745 | del heads[p] | |
751 |
|
746 | |||
752 | return [self.node(r) for r in heads] |
|
747 | return [self.node(r) for r in heads] | |
753 |
|
748 | |||
754 | def children(self, node): |
|
749 | def children(self, node): | |
755 | """find the children of a given node""" |
|
750 | """find the children of a given node""" | |
756 | c = [] |
|
751 | c = [] | |
757 | p = self.rev(node) |
|
752 | p = self.rev(node) | |
758 | for r in range(p + 1, self.count()): |
|
753 | for r in range(p + 1, self.count()): | |
759 | prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] |
|
754 | prevs = [pr for pr in self.parentrevs(r) if pr != nullrev] | |
760 | if prevs: |
|
755 | if prevs: | |
761 | for pr in prevs: |
|
756 | for pr in prevs: | |
762 | if pr == p: |
|
757 | if pr == p: | |
763 | c.append(self.node(r)) |
|
758 | c.append(self.node(r)) | |
764 | elif p == nullrev: |
|
759 | elif p == nullrev: | |
765 | c.append(self.node(r)) |
|
760 | c.append(self.node(r)) | |
766 | return c |
|
761 | return c | |
767 |
|
762 | |||
768 | def _match(self, id): |
|
763 | def _match(self, id): | |
769 | if isinstance(id, (long, int)): |
|
764 | if isinstance(id, (long, int)): | |
770 | # rev |
|
765 | # rev | |
771 | return self.node(id) |
|
766 | return self.node(id) | |
772 | if len(id) == 20: |
|
767 | if len(id) == 20: | |
773 | # possibly a binary node |
|
768 | # possibly a binary node | |
774 | # odds of a binary node being all hex in ASCII are 1 in 10**25 |
|
769 | # odds of a binary node being all hex in ASCII are 1 in 10**25 | |
775 | try: |
|
770 | try: | |
776 | node = id |
|
771 | node = id | |
777 | r = self.rev(node) # quick search the index |
|
772 | r = self.rev(node) # quick search the index | |
778 | return node |
|
773 | return node | |
779 | except LookupError: |
|
774 | except LookupError: | |
780 | pass # may be partial hex id |
|
775 | pass # may be partial hex id | |
781 | try: |
|
776 | try: | |
782 | # str(rev) |
|
777 | # str(rev) | |
783 | rev = int(id) |
|
778 | rev = int(id) | |
784 | if str(rev) != id: raise ValueError |
|
779 | if str(rev) != id: raise ValueError | |
785 | if rev < 0: rev = self.count() + rev |
|
780 | if rev < 0: rev = self.count() + rev | |
786 | if rev < 0 or rev >= self.count(): raise ValueError |
|
781 | if rev < 0 or rev >= self.count(): raise ValueError | |
787 | return self.node(rev) |
|
782 | return self.node(rev) | |
788 | except (ValueError, OverflowError): |
|
783 | except (ValueError, OverflowError): | |
789 | pass |
|
784 | pass | |
790 | if len(id) == 40: |
|
785 | if len(id) == 40: | |
791 | try: |
|
786 | try: | |
792 | # a full hex nodeid? |
|
787 | # a full hex nodeid? | |
793 | node = bin(id) |
|
788 | node = bin(id) | |
794 | r = self.rev(node) |
|
789 | r = self.rev(node) | |
795 | return node |
|
790 | return node | |
796 | except TypeError: |
|
791 | except TypeError: | |
797 | pass |
|
792 | pass | |
798 |
|
793 | |||
799 | def _partialmatch(self, id): |
|
794 | def _partialmatch(self, id): | |
800 | if len(id) < 40: |
|
795 | if len(id) < 40: | |
801 | try: |
|
796 | try: | |
802 | # hex(node)[:...] |
|
797 | # hex(node)[:...] | |
803 | bin_id = bin(id[:len(id) & ~1]) # grab an even number of digits |
|
798 | bin_id = bin(id[:len(id) & ~1]) # grab an even number of digits | |
804 | node = None |
|
799 | node = None | |
805 | for n in self.nodemap: |
|
800 | for n in self.nodemap: | |
806 | if n.startswith(bin_id) and hex(n).startswith(id): |
|
801 | if n.startswith(bin_id) and hex(n).startswith(id): | |
807 | if node is not None: |
|
802 | if node is not None: | |
808 | raise LookupError(_("Ambiguous identifier")) |
|
803 | raise LookupError(_("Ambiguous identifier")) | |
809 | node = n |
|
804 | node = n | |
810 | if node is not None: |
|
805 | if node is not None: | |
811 | return node |
|
806 | return node | |
812 | except TypeError: |
|
807 | except TypeError: | |
813 | pass |
|
808 | pass | |
814 |
|
809 | |||
815 | def lookup(self, id): |
|
810 | def lookup(self, id): | |
816 | """locate a node based on: |
|
811 | """locate a node based on: | |
817 | - revision number or str(revision number) |
|
812 | - revision number or str(revision number) | |
818 | - nodeid or subset of hex nodeid |
|
813 | - nodeid or subset of hex nodeid | |
819 | """ |
|
814 | """ | |
820 |
|
815 | |||
821 | n = self._match(id) |
|
816 | n = self._match(id) | |
822 | if n is not None: |
|
817 | if n is not None: | |
823 | return n |
|
818 | return n | |
824 | n = self._partialmatch(id) |
|
819 | n = self._partialmatch(id) | |
825 | if n: |
|
820 | if n: | |
826 | return n |
|
821 | return n | |
827 |
|
822 | |||
828 | raise LookupError(_("No match found")) |
|
823 | raise LookupError(_("No match found")) | |
829 |
|
824 | |||
830 | def cmp(self, node, text): |
|
825 | def cmp(self, node, text): | |
831 | """compare text with a given file revision""" |
|
826 | """compare text with a given file revision""" | |
832 | p1, p2 = self.parents(node) |
|
827 | p1, p2 = self.parents(node) | |
833 | return hash(text, p1, p2) != node |
|
828 | return hash(text, p1, p2) != node | |
834 |
|
829 | |||
835 | def diff(self, a, b): |
|
830 | def diff(self, a, b): | |
836 | """return a delta between two revisions""" |
|
831 | """return a delta between two revisions""" | |
837 | return mdiff.textdiff(a, b) |
|
832 | return mdiff.textdiff(a, b) | |
838 |
|
833 | |||
839 | def patches(self, t, pl): |
|
834 | def patches(self, t, pl): | |
840 | """apply a list of patches to a string""" |
|
835 | """apply a list of patches to a string""" | |
841 | return mdiff.patches(t, pl) |
|
836 | return mdiff.patches(t, pl) | |
842 |
|
837 | |||
843 | def chunk(self, rev, df=None, cachelen=4096): |
|
838 | def chunk(self, rev, df=None, cachelen=4096): | |
844 | start, length = self.start(rev), self.length(rev) |
|
839 | start, length = self.start(rev), self.length(rev) | |
845 | inline = self._inline() |
|
840 | inline = self._inline() | |
846 | if inline: |
|
841 | if inline: | |
847 |
start += (rev + 1) * |
|
842 | start += (rev + 1) * self._io.size | |
848 | end = start + length |
|
843 | end = start + length | |
849 | def loadcache(df): |
|
844 | def loadcache(df): | |
850 | cache_length = max(cachelen, length) # 4k |
|
845 | cache_length = max(cachelen, length) # 4k | |
851 | if not df: |
|
846 | if not df: | |
852 | if inline: |
|
847 | if inline: | |
853 | df = self.opener(self.indexfile) |
|
848 | df = self.opener(self.indexfile) | |
854 | else: |
|
849 | else: | |
855 | df = self.opener(self.datafile) |
|
850 | df = self.opener(self.datafile) | |
856 | df.seek(start) |
|
851 | df.seek(start) | |
857 | self._io.chunkcache = (start, df.read(cache_length)) |
|
852 | self._io.chunkcache = (start, df.read(cache_length)) | |
858 |
|
853 | |||
859 | if not self._io.chunkcache: |
|
854 | if not self._io.chunkcache: | |
860 | loadcache(df) |
|
855 | loadcache(df) | |
861 |
|
856 | |||
862 | cache_start = self._io.chunkcache[0] |
|
857 | cache_start = self._io.chunkcache[0] | |
863 | cache_end = cache_start + len(self._io.chunkcache[1]) |
|
858 | cache_end = cache_start + len(self._io.chunkcache[1]) | |
864 | if start >= cache_start and end <= cache_end: |
|
859 | if start >= cache_start and end <= cache_end: | |
865 | # it is cached |
|
860 | # it is cached | |
866 | offset = start - cache_start |
|
861 | offset = start - cache_start | |
867 | else: |
|
862 | else: | |
868 | loadcache(df) |
|
863 | loadcache(df) | |
869 | offset = 0 |
|
864 | offset = 0 | |
870 |
|
865 | |||
871 | #def checkchunk(): |
|
866 | #def checkchunk(): | |
872 | # df = self.opener(self.datafile) |
|
867 | # df = self.opener(self.datafile) | |
873 | # df.seek(start) |
|
868 | # df.seek(start) | |
874 | # return df.read(length) |
|
869 | # return df.read(length) | |
875 | #assert s == checkchunk() |
|
870 | #assert s == checkchunk() | |
876 | return decompress(self._io.chunkcache[1][offset:offset + length]) |
|
871 | return decompress(self._io.chunkcache[1][offset:offset + length]) | |
877 |
|
872 | |||
878 | def delta(self, node): |
|
873 | def delta(self, node): | |
879 | """return or calculate a delta between a node and its predecessor""" |
|
874 | """return or calculate a delta between a node and its predecessor""" | |
880 | r = self.rev(node) |
|
875 | r = self.rev(node) | |
881 | return self.revdiff(r - 1, r) |
|
876 | return self.revdiff(r - 1, r) | |
882 |
|
877 | |||
883 | def revdiff(self, rev1, rev2): |
|
878 | def revdiff(self, rev1, rev2): | |
884 | """return or calculate a delta between two revisions""" |
|
879 | """return or calculate a delta between two revisions""" | |
885 | b1 = self.base(rev1) |
|
880 | b1 = self.base(rev1) | |
886 | b2 = self.base(rev2) |
|
881 | b2 = self.base(rev2) | |
887 | if b1 == b2 and rev1 + 1 == rev2: |
|
882 | if b1 == b2 and rev1 + 1 == rev2: | |
888 | return self.chunk(rev2) |
|
883 | return self.chunk(rev2) | |
889 | else: |
|
884 | else: | |
890 | return self.diff(self.revision(self.node(rev1)), |
|
885 | return self.diff(self.revision(self.node(rev1)), | |
891 | self.revision(self.node(rev2))) |
|
886 | self.revision(self.node(rev2))) | |
892 |
|
887 | |||
893 | def revision(self, node): |
|
888 | def revision(self, node): | |
894 | """return an uncompressed revision of a given""" |
|
889 | """return an uncompressed revision of a given""" | |
895 | if node == nullid: return "" |
|
890 | if node == nullid: return "" | |
896 | if self.cache and self.cache[0] == node: return self.cache[2] |
|
891 | if self.cache and self.cache[0] == node: return self.cache[2] | |
897 |
|
892 | |||
898 | # look up what we need to read |
|
893 | # look up what we need to read | |
899 | text = None |
|
894 | text = None | |
900 | rev = self.rev(node) |
|
895 | rev = self.rev(node) | |
901 | base = self.base(rev) |
|
896 | base = self.base(rev) | |
902 |
|
897 | |||
903 | if self._inline(): |
|
898 | if self._inline(): | |
904 | # we probably have the whole chunk cached |
|
899 | # we probably have the whole chunk cached | |
905 | df = None |
|
900 | df = None | |
906 | else: |
|
901 | else: | |
907 | df = self.opener(self.datafile) |
|
902 | df = self.opener(self.datafile) | |
908 |
|
903 | |||
909 | # do we have useful data cached? |
|
904 | # do we have useful data cached? | |
910 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: |
|
905 | if self.cache and self.cache[1] >= base and self.cache[1] < rev: | |
911 | base = self.cache[1] |
|
906 | base = self.cache[1] | |
912 | text = self.cache[2] |
|
907 | text = self.cache[2] | |
913 | self._loadindex(base, rev + 1) |
|
908 | self._loadindex(base, rev + 1) | |
914 | else: |
|
909 | else: | |
915 | self._loadindex(base, rev + 1) |
|
910 | self._loadindex(base, rev + 1) | |
916 | text = self.chunk(base, df=df) |
|
911 | text = self.chunk(base, df=df) | |
917 |
|
912 | |||
918 | bins = [] |
|
913 | bins = [] | |
919 | for r in xrange(base + 1, rev + 1): |
|
914 | for r in xrange(base + 1, rev + 1): | |
920 | bins.append(self.chunk(r, df=df)) |
|
915 | bins.append(self.chunk(r, df=df)) | |
921 |
|
916 | |||
922 | text = self.patches(text, bins) |
|
917 | text = self.patches(text, bins) | |
923 |
|
918 | |||
924 | p1, p2 = self.parents(node) |
|
919 | p1, p2 = self.parents(node) | |
925 | if node != hash(text, p1, p2): |
|
920 | if node != hash(text, p1, p2): | |
926 | raise RevlogError(_("integrity check failed on %s:%d") |
|
921 | raise RevlogError(_("integrity check failed on %s:%d") | |
927 | % (self.datafile, rev)) |
|
922 | % (self.datafile, rev)) | |
928 |
|
923 | |||
929 | self.cache = (node, rev, text) |
|
924 | self.cache = (node, rev, text) | |
930 | return text |
|
925 | return text | |
931 |
|
926 | |||
932 | def checkinlinesize(self, tr, fp=None): |
|
927 | def checkinlinesize(self, tr, fp=None): | |
933 | if not self._inline(): |
|
928 | if not self._inline(): | |
934 | return |
|
929 | return | |
935 | if not fp: |
|
930 | if not fp: | |
936 | fp = self.opener(self.indexfile, 'r') |
|
931 | fp = self.opener(self.indexfile, 'r') | |
937 | fp.seek(0, 2) |
|
932 | fp.seek(0, 2) | |
938 | size = fp.tell() |
|
933 | size = fp.tell() | |
939 | if size < 131072: |
|
934 | if size < 131072: | |
940 | return |
|
935 | return | |
941 | trinfo = tr.find(self.indexfile) |
|
936 | trinfo = tr.find(self.indexfile) | |
942 | if trinfo == None: |
|
937 | if trinfo == None: | |
943 | raise RevlogError(_("%s not found in the transaction") |
|
938 | raise RevlogError(_("%s not found in the transaction") | |
944 | % self.indexfile) |
|
939 | % self.indexfile) | |
945 |
|
940 | |||
946 | trindex = trinfo[2] |
|
941 | trindex = trinfo[2] | |
947 | dataoff = self.start(trindex) |
|
942 | dataoff = self.start(trindex) | |
948 |
|
943 | |||
949 | tr.add(self.datafile, dataoff) |
|
944 | tr.add(self.datafile, dataoff) | |
950 | df = self.opener(self.datafile, 'w') |
|
945 | df = self.opener(self.datafile, 'w') | |
951 | calc = struct.calcsize(self.indexformat) |
|
946 | calc = self._io.size | |
952 | for r in xrange(self.count()): |
|
947 | for r in xrange(self.count()): | |
953 | start = self.start(r) + (r + 1) * calc |
|
948 | start = self.start(r) + (r + 1) * calc | |
954 | length = self.length(r) |
|
949 | length = self.length(r) | |
955 | fp.seek(start) |
|
950 | fp.seek(start) | |
956 | d = fp.read(length) |
|
951 | d = fp.read(length) | |
957 | df.write(d) |
|
952 | df.write(d) | |
958 | fp.close() |
|
953 | fp.close() | |
959 | df.close() |
|
954 | df.close() | |
960 | fp = self.opener(self.indexfile, 'w', atomictemp=True) |
|
955 | fp = self.opener(self.indexfile, 'w', atomictemp=True) | |
961 | self.version &= ~(REVLOGNGINLINEDATA) |
|
956 | self.version &= ~(REVLOGNGINLINEDATA) | |
962 | if self.count(): |
|
957 | if self.count(): | |
963 | x = self.index[0] |
|
958 | x = self.index[0] | |
964 |
e = struct.pack( |
|
959 | e = struct.pack(indexformatng, *x)[4:] | |
965 | l = struct.pack(versionformat, self.version) |
|
960 | l = struct.pack(versionformat, self.version) | |
966 | fp.write(l) |
|
961 | fp.write(l) | |
967 | fp.write(e) |
|
962 | fp.write(e) | |
968 |
|
963 | |||
969 | for i in xrange(1, self.count()): |
|
964 | for i in xrange(1, self.count()): | |
970 | x = self.index[i] |
|
965 | x = self.index[i] | |
971 |
e = struct.pack( |
|
966 | e = struct.pack(indexformatng, *x) | |
972 | fp.write(e) |
|
967 | fp.write(e) | |
973 |
|
968 | |||
974 | # if we don't call rename, the temp file will never replace the |
|
969 | # if we don't call rename, the temp file will never replace the | |
975 | # real index |
|
970 | # real index | |
976 | fp.rename() |
|
971 | fp.rename() | |
977 |
|
972 | |||
978 | tr.replace(self.indexfile, trindex * calc) |
|
973 | tr.replace(self.indexfile, trindex * calc) | |
979 | self._io.chunkcache = None |
|
974 | self._io.chunkcache = None | |
980 |
|
975 | |||
981 | def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): |
|
976 | def addrevision(self, text, transaction, link, p1=None, p2=None, d=None): | |
982 | """add a revision to the log |
|
977 | """add a revision to the log | |
983 |
|
978 | |||
984 | text - the revision data to add |
|
979 | text - the revision data to add | |
985 | transaction - the transaction object used for rollback |
|
980 | transaction - the transaction object used for rollback | |
986 | link - the linkrev data to add |
|
981 | link - the linkrev data to add | |
987 | p1, p2 - the parent nodeids of the revision |
|
982 | p1, p2 - the parent nodeids of the revision | |
988 | d - an optional precomputed delta |
|
983 | d - an optional precomputed delta | |
989 | """ |
|
984 | """ | |
990 | if not self._inline(): |
|
985 | if not self._inline(): | |
991 | dfh = self.opener(self.datafile, "a") |
|
986 | dfh = self.opener(self.datafile, "a") | |
992 | else: |
|
987 | else: | |
993 | dfh = None |
|
988 | dfh = None | |
994 | ifh = self.opener(self.indexfile, "a+") |
|
989 | ifh = self.opener(self.indexfile, "a+") | |
995 | return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) |
|
990 | return self._addrevision(text, transaction, link, p1, p2, d, ifh, dfh) | |
996 |
|
991 | |||
997 | def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): |
|
992 | def _addrevision(self, text, transaction, link, p1, p2, d, ifh, dfh): | |
998 | if text is None: text = "" |
|
993 | if text is None: text = "" | |
999 | if p1 is None: p1 = self.tip() |
|
994 | if p1 is None: p1 = self.tip() | |
1000 | if p2 is None: p2 = nullid |
|
995 | if p2 is None: p2 = nullid | |
1001 |
|
996 | |||
1002 | node = hash(text, p1, p2) |
|
997 | node = hash(text, p1, p2) | |
1003 |
|
998 | |||
1004 | if node in self.nodemap: |
|
999 | if node in self.nodemap: | |
1005 | return node |
|
1000 | return node | |
1006 |
|
1001 | |||
1007 | n = self.count() |
|
1002 | n = self.count() | |
1008 | t = n - 1 |
|
1003 | t = n - 1 | |
1009 |
|
1004 | |||
1010 | if n: |
|
1005 | if n: | |
1011 | base = self.base(t) |
|
1006 | base = self.base(t) | |
1012 | start = self.start(base) |
|
1007 | start = self.start(base) | |
1013 | end = self.end(t) |
|
1008 | end = self.end(t) | |
1014 | if not d: |
|
1009 | if not d: | |
1015 | prev = self.revision(self.tip()) |
|
1010 | prev = self.revision(self.tip()) | |
1016 | d = self.diff(prev, text) |
|
1011 | d = self.diff(prev, text) | |
1017 | data = compress(d) |
|
1012 | data = compress(d) | |
1018 | l = len(data[1]) + len(data[0]) |
|
1013 | l = len(data[1]) + len(data[0]) | |
1019 | dist = end - start + l |
|
1014 | dist = end - start + l | |
1020 |
|
1015 | |||
1021 | # full versions are inserted when the needed deltas |
|
1016 | # full versions are inserted when the needed deltas | |
1022 | # become comparable to the uncompressed text |
|
1017 | # become comparable to the uncompressed text | |
1023 | if not n or dist > len(text) * 2: |
|
1018 | if not n or dist > len(text) * 2: | |
1024 | data = compress(text) |
|
1019 | data = compress(text) | |
1025 | l = len(data[1]) + len(data[0]) |
|
1020 | l = len(data[1]) + len(data[0]) | |
1026 | base = n |
|
1021 | base = n | |
1027 | else: |
|
1022 | else: | |
1028 | base = self.base(t) |
|
1023 | base = self.base(t) | |
1029 |
|
1024 | |||
1030 | offset = 0 |
|
1025 | offset = 0 | |
1031 | if t >= 0: |
|
1026 | if t >= 0: | |
1032 | offset = self.end(t) |
|
1027 | offset = self.end(t) | |
1033 |
|
1028 | |||
1034 | if self.version == REVLOGV0: |
|
|||
1035 | e = (offset, l, base, link, p1, p2, node) |
|
|||
1036 | else: |
|
|||
1037 |
|
|
1029 | e = (offset_type(offset, 0), l, len(text), | |
1038 |
|
|
1030 | base, link, self.rev(p1), self.rev(p2), node) | |
1039 |
|
1031 | |||
1040 | self.index.append(e) |
|
1032 | self.index.append(e) | |
1041 | self.nodemap[node] = n |
|
1033 | self.nodemap[node] = n | |
1042 | entry = struct.pack(self.indexformat, *e) |
|
1034 | ||
|
1035 | if self.version == REVLOGV0: | |||
|
1036 | e = (offset, l, base, link, p1, p2, node) | |||
|
1037 | entry = struct.pack(indexformatv0, *e) | |||
|
1038 | else: | |||
|
1039 | entry = struct.pack(indexformatng, *e) | |||
1043 |
|
1040 | |||
1044 | if not self._inline(): |
|
1041 | if not self._inline(): | |
1045 | transaction.add(self.datafile, offset) |
|
1042 | transaction.add(self.datafile, offset) | |
1046 | transaction.add(self.indexfile, n * len(entry)) |
|
1043 | transaction.add(self.indexfile, n * len(entry)) | |
1047 | if data[0]: |
|
1044 | if data[0]: | |
1048 | dfh.write(data[0]) |
|
1045 | dfh.write(data[0]) | |
1049 | dfh.write(data[1]) |
|
1046 | dfh.write(data[1]) | |
1050 | dfh.flush() |
|
1047 | dfh.flush() | |
1051 | else: |
|
1048 | else: | |
1052 | ifh.seek(0, 2) |
|
1049 | ifh.seek(0, 2) | |
1053 | transaction.add(self.indexfile, ifh.tell(), self.count() - 1) |
|
1050 | transaction.add(self.indexfile, ifh.tell(), self.count() - 1) | |
1054 |
|
1051 | |||
1055 | if len(self.index) == 1 and self.version != REVLOGV0: |
|
1052 | if len(self.index) == 1 and self.version != REVLOGV0: | |
1056 | l = struct.pack(versionformat, self.version) |
|
1053 | l = struct.pack(versionformat, self.version) | |
1057 | ifh.write(l) |
|
1054 | ifh.write(l) | |
1058 | entry = entry[4:] |
|
1055 | entry = entry[4:] | |
1059 |
|
1056 | |||
1060 | ifh.write(entry) |
|
1057 | ifh.write(entry) | |
1061 |
|
1058 | |||
1062 | if self._inline(): |
|
1059 | if self._inline(): | |
1063 | ifh.write(data[0]) |
|
1060 | ifh.write(data[0]) | |
1064 | ifh.write(data[1]) |
|
1061 | ifh.write(data[1]) | |
1065 | self.checkinlinesize(transaction, ifh) |
|
1062 | self.checkinlinesize(transaction, ifh) | |
1066 |
|
1063 | |||
1067 | self.cache = (node, n, text) |
|
1064 | self.cache = (node, n, text) | |
1068 | return node |
|
1065 | return node | |
1069 |
|
1066 | |||
1070 | def ancestor(self, a, b): |
|
1067 | def ancestor(self, a, b): | |
1071 | """calculate the least common ancestor of nodes a and b""" |
|
1068 | """calculate the least common ancestor of nodes a and b""" | |
1072 |
|
1069 | |||
1073 | def parents(rev): |
|
1070 | def parents(rev): | |
1074 | return [p for p in self.parentrevs(rev) if p != nullrev] |
|
1071 | return [p for p in self.parentrevs(rev) if p != nullrev] | |
1075 |
|
1072 | |||
1076 | c = ancestor.ancestor(self.rev(a), self.rev(b), parents) |
|
1073 | c = ancestor.ancestor(self.rev(a), self.rev(b), parents) | |
1077 | if c is None: |
|
1074 | if c is None: | |
1078 | return nullid |
|
1075 | return nullid | |
1079 |
|
1076 | |||
1080 | return self.node(c) |
|
1077 | return self.node(c) | |
1081 |
|
1078 | |||
1082 | def group(self, nodelist, lookup, infocollect=None): |
|
1079 | def group(self, nodelist, lookup, infocollect=None): | |
1083 | """calculate a delta group |
|
1080 | """calculate a delta group | |
1084 |
|
1081 | |||
1085 | Given a list of changeset revs, return a set of deltas and |
|
1082 | Given a list of changeset revs, return a set of deltas and | |
1086 | metadata corresponding to nodes. the first delta is |
|
1083 | metadata corresponding to nodes. the first delta is | |
1087 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to |
|
1084 | parent(nodes[0]) -> nodes[0] the receiver is guaranteed to | |
1088 | have this parent as it has all history before these |
|
1085 | have this parent as it has all history before these | |
1089 | changesets. parent is parent[0] |
|
1086 | changesets. parent is parent[0] | |
1090 | """ |
|
1087 | """ | |
1091 | revs = [self.rev(n) for n in nodelist] |
|
1088 | revs = [self.rev(n) for n in nodelist] | |
1092 |
|
1089 | |||
1093 | # if we don't have any revisions touched by these changesets, bail |
|
1090 | # if we don't have any revisions touched by these changesets, bail | |
1094 | if not revs: |
|
1091 | if not revs: | |
1095 | yield changegroup.closechunk() |
|
1092 | yield changegroup.closechunk() | |
1096 | return |
|
1093 | return | |
1097 |
|
1094 | |||
1098 | # add the parent of the first rev |
|
1095 | # add the parent of the first rev | |
1099 | p = self.parents(self.node(revs[0]))[0] |
|
1096 | p = self.parents(self.node(revs[0]))[0] | |
1100 | revs.insert(0, self.rev(p)) |
|
1097 | revs.insert(0, self.rev(p)) | |
1101 |
|
1098 | |||
1102 | # build deltas |
|
1099 | # build deltas | |
1103 | for d in xrange(0, len(revs) - 1): |
|
1100 | for d in xrange(0, len(revs) - 1): | |
1104 | a, b = revs[d], revs[d + 1] |
|
1101 | a, b = revs[d], revs[d + 1] | |
1105 | nb = self.node(b) |
|
1102 | nb = self.node(b) | |
1106 |
|
1103 | |||
1107 | if infocollect is not None: |
|
1104 | if infocollect is not None: | |
1108 | infocollect(nb) |
|
1105 | infocollect(nb) | |
1109 |
|
1106 | |||
1110 | d = self.revdiff(a, b) |
|
1107 | d = self.revdiff(a, b) | |
1111 | p = self.parents(nb) |
|
1108 | p = self.parents(nb) | |
1112 | meta = nb + p[0] + p[1] + lookup(nb) |
|
1109 | meta = nb + p[0] + p[1] + lookup(nb) | |
1113 | yield changegroup.genchunk("%s%s" % (meta, d)) |
|
1110 | yield changegroup.genchunk("%s%s" % (meta, d)) | |
1114 |
|
1111 | |||
1115 | yield changegroup.closechunk() |
|
1112 | yield changegroup.closechunk() | |
1116 |
|
1113 | |||
1117 | def addgroup(self, revs, linkmapper, transaction, unique=0): |
|
1114 | def addgroup(self, revs, linkmapper, transaction, unique=0): | |
1118 | """ |
|
1115 | """ | |
1119 | add a delta group |
|
1116 | add a delta group | |
1120 |
|
1117 | |||
1121 | given a set of deltas, add them to the revision log. the |
|
1118 | given a set of deltas, add them to the revision log. the | |
1122 | first delta is against its parent, which should be in our |
|
1119 | first delta is against its parent, which should be in our | |
1123 | log, the rest are against the previous delta. |
|
1120 | log, the rest are against the previous delta. | |
1124 | """ |
|
1121 | """ | |
1125 |
|
1122 | |||
1126 | #track the base of the current delta log |
|
1123 | #track the base of the current delta log | |
1127 | r = self.count() |
|
1124 | r = self.count() | |
1128 | t = r - 1 |
|
1125 | t = r - 1 | |
1129 | node = None |
|
1126 | node = None | |
1130 |
|
1127 | |||
1131 | base = prev = nullrev |
|
1128 | base = prev = nullrev | |
1132 | start = end = textlen = 0 |
|
1129 | start = end = textlen = 0 | |
1133 | if r: |
|
1130 | if r: | |
1134 | end = self.end(t) |
|
1131 | end = self.end(t) | |
1135 |
|
1132 | |||
1136 | ifh = self.opener(self.indexfile, "a+") |
|
1133 | ifh = self.opener(self.indexfile, "a+") | |
1137 | ifh.seek(0, 2) |
|
1134 | ifh.seek(0, 2) | |
1138 | transaction.add(self.indexfile, ifh.tell(), self.count()) |
|
1135 | transaction.add(self.indexfile, ifh.tell(), self.count()) | |
1139 | if self._inline(): |
|
1136 | if self._inline(): | |
1140 | dfh = None |
|
1137 | dfh = None | |
1141 | else: |
|
1138 | else: | |
1142 | transaction.add(self.datafile, end) |
|
1139 | transaction.add(self.datafile, end) | |
1143 | dfh = self.opener(self.datafile, "a") |
|
1140 | dfh = self.opener(self.datafile, "a") | |
1144 |
|
1141 | |||
1145 | # loop through our set of deltas |
|
1142 | # loop through our set of deltas | |
1146 | chain = None |
|
1143 | chain = None | |
1147 | for chunk in revs: |
|
1144 | for chunk in revs: | |
1148 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) |
|
1145 | node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80]) | |
1149 | link = linkmapper(cs) |
|
1146 | link = linkmapper(cs) | |
1150 | if node in self.nodemap: |
|
1147 | if node in self.nodemap: | |
1151 | # this can happen if two branches make the same change |
|
1148 | # this can happen if two branches make the same change | |
1152 | # if unique: |
|
1149 | # if unique: | |
1153 | # raise RevlogError(_("already have %s") % hex(node[:4])) |
|
1150 | # raise RevlogError(_("already have %s") % hex(node[:4])) | |
1154 | chain = node |
|
1151 | chain = node | |
1155 | continue |
|
1152 | continue | |
1156 | delta = chunk[80:] |
|
1153 | delta = chunk[80:] | |
1157 |
|
1154 | |||
1158 | for p in (p1, p2): |
|
1155 | for p in (p1, p2): | |
1159 | if not p in self.nodemap: |
|
1156 | if not p in self.nodemap: | |
1160 | raise LookupError(_("unknown parent %s") % short(p)) |
|
1157 | raise LookupError(_("unknown parent %s") % short(p)) | |
1161 |
|
1158 | |||
1162 | if not chain: |
|
1159 | if not chain: | |
1163 | # retrieve the parent revision of the delta chain |
|
1160 | # retrieve the parent revision of the delta chain | |
1164 | chain = p1 |
|
1161 | chain = p1 | |
1165 | if not chain in self.nodemap: |
|
1162 | if not chain in self.nodemap: | |
1166 | raise LookupError(_("unknown base %s") % short(chain[:4])) |
|
1163 | raise LookupError(_("unknown base %s") % short(chain[:4])) | |
1167 |
|
1164 | |||
1168 | # full versions are inserted when the needed deltas become |
|
1165 | # full versions are inserted when the needed deltas become | |
1169 | # comparable to the uncompressed text or when the previous |
|
1166 | # comparable to the uncompressed text or when the previous | |
1170 | # version is not the one we have a delta against. We use |
|
1167 | # version is not the one we have a delta against. We use | |
1171 | # the size of the previous full rev as a proxy for the |
|
1168 | # the size of the previous full rev as a proxy for the | |
1172 | # current size. |
|
1169 | # current size. | |
1173 |
|
1170 | |||
1174 | if chain == prev: |
|
1171 | if chain == prev: | |
1175 | tempd = compress(delta) |
|
1172 | tempd = compress(delta) | |
1176 | cdelta = tempd[0] + tempd[1] |
|
1173 | cdelta = tempd[0] + tempd[1] | |
1177 | textlen = mdiff.patchedsize(textlen, delta) |
|
1174 | textlen = mdiff.patchedsize(textlen, delta) | |
1178 |
|
1175 | |||
1179 | if chain != prev or (end - start + len(cdelta)) > textlen * 2: |
|
1176 | if chain != prev or (end - start + len(cdelta)) > textlen * 2: | |
1180 | # flush our writes here so we can read it in revision |
|
1177 | # flush our writes here so we can read it in revision | |
1181 | if dfh: |
|
1178 | if dfh: | |
1182 | dfh.flush() |
|
1179 | dfh.flush() | |
1183 | ifh.flush() |
|
1180 | ifh.flush() | |
1184 | text = self.revision(chain) |
|
1181 | text = self.revision(chain) | |
1185 | text = self.patches(text, [delta]) |
|
1182 | text = self.patches(text, [delta]) | |
1186 | chk = self._addrevision(text, transaction, link, p1, p2, None, |
|
1183 | chk = self._addrevision(text, transaction, link, p1, p2, None, | |
1187 | ifh, dfh) |
|
1184 | ifh, dfh) | |
1188 | if not dfh and not self._inline(): |
|
1185 | if not dfh and not self._inline(): | |
1189 | # addrevision switched from inline to conventional |
|
1186 | # addrevision switched from inline to conventional | |
1190 | # reopen the index |
|
1187 | # reopen the index | |
1191 | dfh = self.opener(self.datafile, "a") |
|
1188 | dfh = self.opener(self.datafile, "a") | |
1192 | ifh = self.opener(self.indexfile, "a") |
|
1189 | ifh = self.opener(self.indexfile, "a") | |
1193 | if chk != node: |
|
1190 | if chk != node: | |
1194 | raise RevlogError(_("consistency error adding group")) |
|
1191 | raise RevlogError(_("consistency error adding group")) | |
1195 | textlen = len(text) |
|
1192 | textlen = len(text) | |
1196 | else: |
|
1193 | else: | |
1197 | if self.version == REVLOGV0: |
|
|||
1198 | e = (end, len(cdelta), base, link, p1, p2, node) |
|
|||
1199 | else: |
|
|||
1200 |
|
|
1194 | e = (offset_type(end, 0), len(cdelta), textlen, base, | |
1201 |
|
|
1195 | link, self.rev(p1), self.rev(p2), node) | |
1202 | self.index.append(e) |
|
1196 | self.index.append(e) | |
1203 | self.nodemap[node] = r |
|
1197 | self.nodemap[node] = r | |
1204 | if self._inline(): |
|
1198 | if self._inline(): | |
1205 |
ifh.write(struct.pack( |
|
1199 | ifh.write(struct.pack(indexformatng, *e)) | |
1206 | ifh.write(cdelta) |
|
1200 | ifh.write(cdelta) | |
1207 | self.checkinlinesize(transaction, ifh) |
|
1201 | self.checkinlinesize(transaction, ifh) | |
1208 | if not self._inline(): |
|
1202 | if not self._inline(): | |
1209 | dfh = self.opener(self.datafile, "a") |
|
1203 | dfh = self.opener(self.datafile, "a") | |
1210 | ifh = self.opener(self.indexfile, "a") |
|
1204 | ifh = self.opener(self.indexfile, "a") | |
1211 | else: |
|
1205 | else: | |
|
1206 | if self.version == REVLOGV0: | |||
|
1207 | e = (end, len(cdelta), base, link, p1, p2, node) | |||
|
1208 | entry = struct.pack(indexformatv0, *e) | |||
|
1209 | else: | |||
|
1210 | entry = struct.pack(indexformatng, *e) | |||
1212 | dfh.write(cdelta) |
|
1211 | dfh.write(cdelta) | |
1213 |
ifh.write( |
|
1212 | ifh.write(entry) | |
1214 |
|
1213 | |||
1215 | t, r, chain, prev = r, r + 1, node, node |
|
1214 | t, r, chain, prev = r, r + 1, node, node | |
1216 | base = self.base(t) |
|
1215 | base = self.base(t) | |
1217 | start = self.start(base) |
|
1216 | start = self.start(base) | |
1218 | end = self.end(t) |
|
1217 | end = self.end(t) | |
1219 |
|
1218 | |||
1220 | return node |
|
1219 | return node | |
1221 |
|
1220 | |||
1222 | def strip(self, rev, minlink): |
|
1221 | def strip(self, rev, minlink): | |
1223 | if self.count() == 0 or rev >= self.count(): |
|
1222 | if self.count() == 0 or rev >= self.count(): | |
1224 | return |
|
1223 | return | |
1225 |
|
1224 | |||
1226 | if isinstance(self.index, lazyindex): |
|
1225 | if isinstance(self.index, lazyindex): | |
1227 | self._loadindexmap() |
|
1226 | self._loadindexmap() | |
1228 |
|
1227 | |||
1229 | # When stripping away a revision, we need to make sure it |
|
1228 | # When stripping away a revision, we need to make sure it | |
1230 | # does not actually belong to an older changeset. |
|
1229 | # does not actually belong to an older changeset. | |
1231 | # The minlink parameter defines the oldest revision |
|
1230 | # The minlink parameter defines the oldest revision | |
1232 | # we're allowed to strip away. |
|
1231 | # we're allowed to strip away. | |
1233 | while minlink > self.index[rev][-4]: |
|
1232 | while minlink > self.index[rev][-4]: | |
1234 | rev += 1 |
|
1233 | rev += 1 | |
1235 | if rev >= self.count(): |
|
1234 | if rev >= self.count(): | |
1236 | return |
|
1235 | return | |
1237 |
|
1236 | |||
1238 | # first truncate the files on disk |
|
1237 | # first truncate the files on disk | |
1239 | end = self.start(rev) |
|
1238 | end = self.start(rev) | |
1240 | if not self._inline(): |
|
1239 | if not self._inline(): | |
1241 | df = self.opener(self.datafile, "a") |
|
1240 | df = self.opener(self.datafile, "a") | |
1242 | df.truncate(end) |
|
1241 | df.truncate(end) | |
1243 |
end = rev * |
|
1242 | end = rev * self._io.size | |
1244 | else: |
|
1243 | else: | |
1245 |
end += rev * |
|
1244 | end += rev * self._io.size | |
1246 |
|
1245 | |||
1247 | indexf = self.opener(self.indexfile, "a") |
|
1246 | indexf = self.opener(self.indexfile, "a") | |
1248 | indexf.truncate(end) |
|
1247 | indexf.truncate(end) | |
1249 |
|
1248 | |||
1250 | # then reset internal state in memory to forget those revisions |
|
1249 | # then reset internal state in memory to forget those revisions | |
1251 | self.cache = None |
|
1250 | self.cache = None | |
1252 | self._io.chunkcache = None |
|
1251 | self._io.chunkcache = None | |
1253 | for x in xrange(rev, self.count()): |
|
1252 | for x in xrange(rev, self.count()): | |
1254 | del self.nodemap[self.node(x)] |
|
1253 | del self.nodemap[self.node(x)] | |
1255 |
|
1254 | |||
1256 | del self.index[rev:] |
|
1255 | del self.index[rev:] | |
1257 |
|
1256 | |||
1258 | def checksize(self): |
|
1257 | def checksize(self): | |
1259 | expected = 0 |
|
1258 | expected = 0 | |
1260 | if self.count(): |
|
1259 | if self.count(): | |
1261 | expected = self.end(self.count() - 1) |
|
1260 | expected = self.end(self.count() - 1) | |
1262 |
|
1261 | |||
1263 | try: |
|
1262 | try: | |
1264 | f = self.opener(self.datafile) |
|
1263 | f = self.opener(self.datafile) | |
1265 | f.seek(0, 2) |
|
1264 | f.seek(0, 2) | |
1266 | actual = f.tell() |
|
1265 | actual = f.tell() | |
1267 | dd = actual - expected |
|
1266 | dd = actual - expected | |
1268 | except IOError, inst: |
|
1267 | except IOError, inst: | |
1269 | if inst.errno != errno.ENOENT: |
|
1268 | if inst.errno != errno.ENOENT: | |
1270 | raise |
|
1269 | raise | |
1271 | dd = 0 |
|
1270 | dd = 0 | |
1272 |
|
1271 | |||
1273 | try: |
|
1272 | try: | |
1274 | f = self.opener(self.indexfile) |
|
1273 | f = self.opener(self.indexfile) | |
1275 | f.seek(0, 2) |
|
1274 | f.seek(0, 2) | |
1276 | actual = f.tell() |
|
1275 | actual = f.tell() | |
1277 | s = struct.calcsize(self.indexformat) |
|
1276 | s = self._io.size | |
1278 | i = actual / s |
|
1277 | i = actual / s | |
1279 | di = actual - (i * s) |
|
1278 | di = actual - (i * s) | |
1280 | if self._inline(): |
|
1279 | if self._inline(): | |
1281 | databytes = 0 |
|
1280 | databytes = 0 | |
1282 | for r in xrange(self.count()): |
|
1281 | for r in xrange(self.count()): | |
1283 | databytes += self.length(r) |
|
1282 | databytes += self.length(r) | |
1284 | dd = 0 |
|
1283 | dd = 0 | |
1285 | di = actual - self.count() * s - databytes |
|
1284 | di = actual - self.count() * s - databytes | |
1286 | except IOError, inst: |
|
1285 | except IOError, inst: | |
1287 | if inst.errno != errno.ENOENT: |
|
1286 | if inst.errno != errno.ENOENT: | |
1288 | raise |
|
1287 | raise | |
1289 | di = 0 |
|
1288 | di = 0 | |
1290 |
|
1289 | |||
1291 | return (dd, di) |
|
1290 | return (dd, di) | |
1292 |
|
1291 | |||
1293 |
|
1292 |
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