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| 1 | # copies.py - copy detection for Mercurial |
|
1 | # copies.py - copy detection for Mercurial | |
| 2 | # |
|
2 | # | |
| 3 | # Copyright 2008 Matt Mackall <mpm@selenic.com> |
|
3 | # Copyright 2008 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 | from __future__ import absolute_import |
|
8 | from __future__ import absolute_import | |
| 9 |
|
9 | |||
| 10 | import collections |
|
10 | import collections | |
| 11 | import os |
|
11 | import os | |
| 12 |
|
12 | |||
| 13 | from .i18n import _ |
|
13 | from .i18n import _ | |
| 14 |
|
14 | |||
| 15 |
|
15 | |||
| 16 | from . import ( |
|
16 | from . import ( | |
| 17 | match as matchmod, |
|
17 | match as matchmod, | |
| 18 | node, |
|
18 | node, | |
| 19 | pathutil, |
|
19 | pathutil, | |
| 20 | policy, |
|
20 | policy, | |
| 21 | pycompat, |
|
21 | pycompat, | |
| 22 | util, |
|
22 | util, | |
| 23 | ) |
|
23 | ) | |
| 24 |
|
24 | |||
| 25 |
|
25 | |||
| 26 | from .utils import stringutil |
|
26 | from .utils import stringutil | |
| 27 |
|
27 | |||
| 28 | from .revlogutils import flagutil |
|
28 | from .revlogutils import flagutil | |
| 29 |
|
29 | |||
| 30 | rustmod = policy.importrust("copy_tracing") |
|
30 | rustmod = policy.importrust("copy_tracing") | |
| 31 |
|
31 | |||
| 32 |
|
32 | |||
| 33 | def _filter(src, dst, t): |
|
33 | def _filter(src, dst, t): | |
| 34 | """filters out invalid copies after chaining""" |
|
34 | """filters out invalid copies after chaining""" | |
| 35 |
|
35 | |||
| 36 | # When _chain()'ing copies in 'a' (from 'src' via some other commit 'mid') |
|
36 | # When _chain()'ing copies in 'a' (from 'src' via some other commit 'mid') | |
| 37 | # with copies in 'b' (from 'mid' to 'dst'), we can get the different cases |
|
37 | # with copies in 'b' (from 'mid' to 'dst'), we can get the different cases | |
| 38 | # in the following table (not including trivial cases). For example, case 2 |
|
38 | # in the following table (not including trivial cases). For example, case 2 | |
| 39 | # is where a file existed in 'src' and remained under that name in 'mid' and |
|
39 | # is where a file existed in 'src' and remained under that name in 'mid' and | |
| 40 | # then was renamed between 'mid' and 'dst'. |
|
40 | # then was renamed between 'mid' and 'dst'. | |
| 41 | # |
|
41 | # | |
| 42 | # case src mid dst result |
|
42 | # case src mid dst result | |
| 43 | # 1 x y - - |
|
43 | # 1 x y - - | |
| 44 | # 2 x y y x->y |
|
44 | # 2 x y y x->y | |
| 45 | # 3 x y x - |
|
45 | # 3 x y x - | |
| 46 | # 4 x y z x->z |
|
46 | # 4 x y z x->z | |
| 47 | # 5 - x y - |
|
47 | # 5 - x y - | |
| 48 | # 6 x x y x->y |
|
48 | # 6 x x y x->y | |
| 49 | # |
|
49 | # | |
| 50 | # _chain() takes care of chaining the copies in 'a' and 'b', but it |
|
50 | # _chain() takes care of chaining the copies in 'a' and 'b', but it | |
| 51 | # cannot tell the difference between cases 1 and 2, between 3 and 4, or |
|
51 | # cannot tell the difference between cases 1 and 2, between 3 and 4, or | |
| 52 | # between 5 and 6, so it includes all cases in its result. |
|
52 | # between 5 and 6, so it includes all cases in its result. | |
| 53 | # Cases 1, 3, and 5 are then removed by _filter(). |
|
53 | # Cases 1, 3, and 5 are then removed by _filter(). | |
| 54 |
|
54 | |||
| 55 | for k, v in list(t.items()): |
|
55 | for k, v in list(t.items()): | |
| 56 | # remove copies from files that didn't exist |
|
56 | # remove copies from files that didn't exist | |
| 57 | if v not in src: |
|
57 | if v not in src: | |
| 58 | del t[k] |
|
58 | del t[k] | |
| 59 | # remove criss-crossed copies |
|
59 | # remove criss-crossed copies | |
| 60 | elif k in src and v in dst: |
|
60 | elif k in src and v in dst: | |
| 61 | del t[k] |
|
61 | del t[k] | |
| 62 | # remove copies to files that were then removed |
|
62 | # remove copies to files that were then removed | |
| 63 | elif k not in dst: |
|
63 | elif k not in dst: | |
| 64 | del t[k] |
|
64 | del t[k] | |
| 65 |
|
65 | |||
| 66 |
|
66 | |||
| 67 | def _chain(prefix, suffix): |
|
67 | def _chain(prefix, suffix): | |
| 68 | """chain two sets of copies 'prefix' and 'suffix'""" |
|
68 | """chain two sets of copies 'prefix' and 'suffix'""" | |
| 69 | result = prefix.copy() |
|
69 | result = prefix.copy() | |
| 70 | for key, value in pycompat.iteritems(suffix): |
|
70 | for key, value in pycompat.iteritems(suffix): | |
| 71 | result[key] = prefix.get(value, value) |
|
71 | result[key] = prefix.get(value, value) | |
| 72 | return result |
|
72 | return result | |
| 73 |
|
73 | |||
| 74 |
|
74 | |||
| 75 | def _tracefile(fctx, am, basemf): |
|
75 | def _tracefile(fctx, am, basemf): | |
| 76 | """return file context that is the ancestor of fctx present in ancestor |
|
76 | """return file context that is the ancestor of fctx present in ancestor | |
| 77 | manifest am |
|
77 | manifest am | |
| 78 |
|
78 | |||
| 79 | Note: we used to try and stop after a given limit, however checking if that |
|
79 | Note: we used to try and stop after a given limit, however checking if that | |
| 80 | limit is reached turned out to be very expensive. we are better off |
|
80 | limit is reached turned out to be very expensive. we are better off | |
| 81 | disabling that feature.""" |
|
81 | disabling that feature.""" | |
| 82 |
|
82 | |||
| 83 | for f in fctx.ancestors(): |
|
83 | for f in fctx.ancestors(): | |
| 84 | path = f.path() |
|
84 | path = f.path() | |
| 85 | if am.get(path, None) == f.filenode(): |
|
85 | if am.get(path, None) == f.filenode(): | |
| 86 | return path |
|
86 | return path | |
| 87 | if basemf and basemf.get(path, None) == f.filenode(): |
|
87 | if basemf and basemf.get(path, None) == f.filenode(): | |
| 88 | return path |
|
88 | return path | |
| 89 |
|
89 | |||
| 90 |
|
90 | |||
| 91 | def _dirstatecopies(repo, match=None): |
|
91 | def _dirstatecopies(repo, match=None): | |
| 92 | ds = repo.dirstate |
|
92 | ds = repo.dirstate | |
| 93 | c = ds.copies().copy() |
|
93 | c = ds.copies().copy() | |
| 94 | for k in list(c): |
|
94 | for k in list(c): | |
| 95 | if ds[k] not in b'anm' or (match and not match(k)): |
|
95 | if ds[k] not in b'anm' or (match and not match(k)): | |
| 96 | del c[k] |
|
96 | del c[k] | |
| 97 | return c |
|
97 | return c | |
| 98 |
|
98 | |||
| 99 |
|
99 | |||
| 100 | def _computeforwardmissing(a, b, match=None): |
|
100 | def _computeforwardmissing(a, b, match=None): | |
| 101 | """Computes which files are in b but not a. |
|
101 | """Computes which files are in b but not a. | |
| 102 | This is its own function so extensions can easily wrap this call to see what |
|
102 | This is its own function so extensions can easily wrap this call to see what | |
| 103 | files _forwardcopies is about to process. |
|
103 | files _forwardcopies is about to process. | |
| 104 | """ |
|
104 | """ | |
| 105 | ma = a.manifest() |
|
105 | ma = a.manifest() | |
| 106 | mb = b.manifest() |
|
106 | mb = b.manifest() | |
| 107 | return mb.filesnotin(ma, match=match) |
|
107 | return mb.filesnotin(ma, match=match) | |
| 108 |
|
108 | |||
| 109 |
|
109 | |||
| 110 | def usechangesetcentricalgo(repo): |
|
110 | def usechangesetcentricalgo(repo): | |
| 111 | """Checks if we should use changeset-centric copy algorithms""" |
|
111 | """Checks if we should use changeset-centric copy algorithms""" | |
| 112 | if repo.filecopiesmode == b'changeset-sidedata': |
|
112 | if repo.filecopiesmode == b'changeset-sidedata': | |
| 113 | return True |
|
113 | return True | |
| 114 | readfrom = repo.ui.config(b'experimental', b'copies.read-from') |
|
114 | readfrom = repo.ui.config(b'experimental', b'copies.read-from') | |
| 115 | changesetsource = (b'changeset-only', b'compatibility') |
|
115 | changesetsource = (b'changeset-only', b'compatibility') | |
| 116 | return readfrom in changesetsource |
|
116 | return readfrom in changesetsource | |
| 117 |
|
117 | |||
| 118 |
|
118 | |||
| 119 | def _committedforwardcopies(a, b, base, match): |
|
119 | def _committedforwardcopies(a, b, base, match): | |
| 120 | """Like _forwardcopies(), but b.rev() cannot be None (working copy)""" |
|
120 | """Like _forwardcopies(), but b.rev() cannot be None (working copy)""" | |
| 121 | # files might have to be traced back to the fctx parent of the last |
|
121 | # files might have to be traced back to the fctx parent of the last | |
| 122 | # one-side-only changeset, but not further back than that |
|
122 | # one-side-only changeset, but not further back than that | |
| 123 | repo = a._repo |
|
123 | repo = a._repo | |
| 124 |
|
124 | |||
| 125 | if usechangesetcentricalgo(repo): |
|
125 | if usechangesetcentricalgo(repo): | |
| 126 | return _changesetforwardcopies(a, b, match) |
|
126 | return _changesetforwardcopies(a, b, match) | |
| 127 |
|
127 | |||
| 128 | debug = repo.ui.debugflag and repo.ui.configbool(b'devel', b'debug.copies') |
|
128 | debug = repo.ui.debugflag and repo.ui.configbool(b'devel', b'debug.copies') | |
| 129 | dbg = repo.ui.debug |
|
129 | dbg = repo.ui.debug | |
| 130 | if debug: |
|
130 | if debug: | |
| 131 | dbg(b'debug.copies: looking into rename from %s to %s\n' % (a, b)) |
|
131 | dbg(b'debug.copies: looking into rename from %s to %s\n' % (a, b)) | |
| 132 | am = a.manifest() |
|
132 | am = a.manifest() | |
| 133 | basemf = None if base is None else base.manifest() |
|
133 | basemf = None if base is None else base.manifest() | |
| 134 |
|
134 | |||
| 135 | # find where new files came from |
|
135 | # find where new files came from | |
| 136 | # we currently don't try to find where old files went, too expensive |
|
136 | # we currently don't try to find where old files went, too expensive | |
| 137 | # this means we can miss a case like 'hg rm b; hg cp a b' |
|
137 | # this means we can miss a case like 'hg rm b; hg cp a b' | |
| 138 | cm = {} |
|
138 | cm = {} | |
| 139 |
|
139 | |||
| 140 | # Computing the forward missing is quite expensive on large manifests, since |
|
140 | # Computing the forward missing is quite expensive on large manifests, since | |
| 141 | # it compares the entire manifests. We can optimize it in the common use |
|
141 | # it compares the entire manifests. We can optimize it in the common use | |
| 142 | # case of computing what copies are in a commit versus its parent (like |
|
142 | # case of computing what copies are in a commit versus its parent (like | |
| 143 | # during a rebase or histedit). Note, we exclude merge commits from this |
|
143 | # during a rebase or histedit). Note, we exclude merge commits from this | |
| 144 | # optimization, since the ctx.files() for a merge commit is not correct for |
|
144 | # optimization, since the ctx.files() for a merge commit is not correct for | |
| 145 | # this comparison. |
|
145 | # this comparison. | |
| 146 | forwardmissingmatch = match |
|
146 | forwardmissingmatch = match | |
| 147 | if b.p1() == a and b.p2().node() == node.nullid: |
|
147 | if b.p1() == a and b.p2().node() == node.nullid: | |
| 148 | filesmatcher = matchmod.exact(b.files()) |
|
148 | filesmatcher = matchmod.exact(b.files()) | |
| 149 | forwardmissingmatch = matchmod.intersectmatchers(match, filesmatcher) |
|
149 | forwardmissingmatch = matchmod.intersectmatchers(match, filesmatcher) | |
| 150 | missing = _computeforwardmissing(a, b, match=forwardmissingmatch) |
|
150 | missing = _computeforwardmissing(a, b, match=forwardmissingmatch) | |
| 151 |
|
151 | |||
| 152 | ancestrycontext = a._repo.changelog.ancestors([b.rev()], inclusive=True) |
|
152 | ancestrycontext = a._repo.changelog.ancestors([b.rev()], inclusive=True) | |
| 153 |
|
153 | |||
| 154 | if debug: |
|
154 | if debug: | |
| 155 | dbg(b'debug.copies: missing files to search: %d\n' % len(missing)) |
|
155 | dbg(b'debug.copies: missing files to search: %d\n' % len(missing)) | |
| 156 |
|
156 | |||
| 157 | for f in sorted(missing): |
|
157 | for f in sorted(missing): | |
| 158 | if debug: |
|
158 | if debug: | |
| 159 | dbg(b'debug.copies: tracing file: %s\n' % f) |
|
159 | dbg(b'debug.copies: tracing file: %s\n' % f) | |
| 160 | fctx = b[f] |
|
160 | fctx = b[f] | |
| 161 | fctx._ancestrycontext = ancestrycontext |
|
161 | fctx._ancestrycontext = ancestrycontext | |
| 162 |
|
162 | |||
| 163 | if debug: |
|
163 | if debug: | |
| 164 | start = util.timer() |
|
164 | start = util.timer() | |
| 165 | opath = _tracefile(fctx, am, basemf) |
|
165 | opath = _tracefile(fctx, am, basemf) | |
| 166 | if opath: |
|
166 | if opath: | |
| 167 | if debug: |
|
167 | if debug: | |
| 168 | dbg(b'debug.copies: rename of: %s\n' % opath) |
|
168 | dbg(b'debug.copies: rename of: %s\n' % opath) | |
| 169 | cm[f] = opath |
|
169 | cm[f] = opath | |
| 170 | if debug: |
|
170 | if debug: | |
| 171 | dbg( |
|
171 | dbg( | |
| 172 | b'debug.copies: time: %f seconds\n' |
|
172 | b'debug.copies: time: %f seconds\n' | |
| 173 | % (util.timer() - start) |
|
173 | % (util.timer() - start) | |
| 174 | ) |
|
174 | ) | |
| 175 | return cm |
|
175 | return cm | |
| 176 |
|
176 | |||
| 177 |
|
177 | |||
| 178 | def _revinfo_getter(repo): |
|
178 | def _revinfo_getter(repo): | |
| 179 | """returns a function that returns the following data given a <rev>" |
|
179 | """returns a function that returns the following data given a <rev>" | |
| 180 |
|
180 | |||
| 181 | * p1: revision number of first parent |
|
181 | * p1: revision number of first parent | |
| 182 | * p2: revision number of first parent |
|
182 | * p2: revision number of first parent | |
| 183 | * changes: a ChangingFiles object |
|
183 | * changes: a ChangingFiles object | |
| 184 | """ |
|
184 | """ | |
| 185 | cl = repo.changelog |
|
185 | cl = repo.changelog | |
| 186 | parents = cl.parentrevs |
|
186 | parents = cl.parentrevs | |
| 187 | flags = cl.flags |
|
187 | flags = cl.flags | |
| 188 |
|
188 | |||
| 189 | HASCOPIESINFO = flagutil.REVIDX_HASCOPIESINFO |
|
189 | HASCOPIESINFO = flagutil.REVIDX_HASCOPIESINFO | |
| 190 |
|
190 | |||
| 191 | changelogrevision = cl.changelogrevision |
|
191 | changelogrevision = cl.changelogrevision | |
| 192 |
|
192 | |||
| 193 | # A small cache to avoid doing the work twice for merges |
|
193 | # A small cache to avoid doing the work twice for merges | |
| 194 | # |
|
194 | # | |
| 195 | # In the vast majority of cases, if we ask information for a revision |
|
195 | # In the vast majority of cases, if we ask information for a revision | |
| 196 | # about 1 parent, we'll later ask it for the other. So it make sense to |
|
196 | # about 1 parent, we'll later ask it for the other. So it make sense to | |
| 197 | # keep the information around when reaching the first parent of a merge |
|
197 | # keep the information around when reaching the first parent of a merge | |
| 198 | # and dropping it after it was provided for the second parents. |
|
198 | # and dropping it after it was provided for the second parents. | |
| 199 | # |
|
199 | # | |
| 200 | # It exists cases were only one parent of the merge will be walked. It |
|
200 | # It exists cases were only one parent of the merge will be walked. It | |
| 201 | # happens when the "destination" the copy tracing is descendant from a |
|
201 | # happens when the "destination" the copy tracing is descendant from a | |
| 202 | # new root, not common with the "source". In that case, we will only walk |
|
202 | # new root, not common with the "source". In that case, we will only walk | |
| 203 | # through merge parents that are descendant of changesets common |
|
203 | # through merge parents that are descendant of changesets common | |
| 204 | # between "source" and "destination". |
|
204 | # between "source" and "destination". | |
| 205 | # |
|
205 | # | |
| 206 | # With the current case implementation if such changesets have a copy |
|
206 | # With the current case implementation if such changesets have a copy | |
| 207 | # information, we'll keep them in memory until the end of |
|
207 | # information, we'll keep them in memory until the end of | |
| 208 | # _changesetforwardcopies. We don't expect the case to be frequent |
|
208 | # _changesetforwardcopies. We don't expect the case to be frequent | |
| 209 | # enough to matters. |
|
209 | # enough to matters. | |
| 210 | # |
|
210 | # | |
| 211 | # In addition, it would be possible to reach pathological case, were |
|
211 | # In addition, it would be possible to reach pathological case, were | |
| 212 | # many first parent are met before any second parent is reached. In |
|
212 | # many first parent are met before any second parent is reached. In | |
| 213 | # that case the cache could grow. If this even become an issue one can |
|
213 | # that case the cache could grow. If this even become an issue one can | |
| 214 | # safely introduce a maximum cache size. This would trade extra CPU/IO |
|
214 | # safely introduce a maximum cache size. This would trade extra CPU/IO | |
| 215 | # time to save memory. |
|
215 | # time to save memory. | |
| 216 | merge_caches = {} |
|
216 | merge_caches = {} | |
| 217 |
|
217 | |||
| 218 | def revinfo(rev): |
|
218 | def revinfo(rev): | |
| 219 | p1, p2 = parents(rev) |
|
219 | p1, p2 = parents(rev) | |
| 220 | value = None |
|
220 | value = None | |
| 221 | e = merge_caches.pop(rev, None) |
|
221 | e = merge_caches.pop(rev, None) | |
| 222 | if e is not None: |
|
222 | if e is not None: | |
| 223 | return e |
|
223 | return e | |
| 224 | changes = None |
|
224 | changes = None | |
| 225 | if flags(rev) & HASCOPIESINFO: |
|
225 | if flags(rev) & HASCOPIESINFO: | |
| 226 | changes = changelogrevision(rev).changes |
|
226 | changes = changelogrevision(rev).changes | |
| 227 | value = (p1, p2, changes) |
|
227 | value = (p1, p2, changes) | |
| 228 | if p1 != node.nullrev and p2 != node.nullrev: |
|
228 | if p1 != node.nullrev and p2 != node.nullrev: | |
| 229 | # XXX some case we over cache, IGNORE |
|
229 | # XXX some case we over cache, IGNORE | |
| 230 | merge_caches[rev] = value |
|
230 | merge_caches[rev] = value | |
| 231 | return value |
|
231 | return value | |
| 232 |
|
232 | |||
| 233 | return revinfo |
|
233 | return revinfo | |
| 234 |
|
234 | |||
| 235 |
|
235 | |||
| 236 | def cached_is_ancestor(is_ancestor): |
|
236 | def cached_is_ancestor(is_ancestor): | |
| 237 | """return a cached version of is_ancestor""" |
|
237 | """return a cached version of is_ancestor""" | |
| 238 | cache = {} |
|
238 | cache = {} | |
| 239 |
|
239 | |||
| 240 | def _is_ancestor(anc, desc): |
|
240 | def _is_ancestor(anc, desc): | |
| 241 | if anc > desc: |
|
241 | if anc > desc: | |
| 242 | return False |
|
242 | return False | |
| 243 | elif anc == desc: |
|
243 | elif anc == desc: | |
| 244 | return True |
|
244 | return True | |
| 245 | key = (anc, desc) |
|
245 | key = (anc, desc) | |
| 246 | ret = cache.get(key) |
|
246 | ret = cache.get(key) | |
| 247 | if ret is None: |
|
247 | if ret is None: | |
| 248 | ret = cache[key] = is_ancestor(anc, desc) |
|
248 | ret = cache[key] = is_ancestor(anc, desc) | |
| 249 | return ret |
|
249 | return ret | |
| 250 |
|
250 | |||
| 251 | return _is_ancestor |
|
251 | return _is_ancestor | |
| 252 |
|
252 | |||
| 253 |
|
253 | |||
| 254 | def _changesetforwardcopies(a, b, match): |
|
254 | def _changesetforwardcopies(a, b, match): | |
| 255 | if a.rev() in (node.nullrev, b.rev()): |
|
255 | if a.rev() in (node.nullrev, b.rev()): | |
| 256 | return {} |
|
256 | return {} | |
| 257 |
|
257 | |||
| 258 | repo = a.repo().unfiltered() |
|
258 | repo = a.repo().unfiltered() | |
| 259 | children = {} |
|
259 | children = {} | |
| 260 |
|
260 | |||
| 261 | cl = repo.changelog |
|
261 | cl = repo.changelog | |
| 262 |
isancestor = |
|
262 | isancestor = cl.isancestorrev | |
| 263 | missingrevs = cl.findmissingrevs(common=[a.rev()], heads=[b.rev()]) |
|
263 | missingrevs = cl.findmissingrevs(common=[a.rev()], heads=[b.rev()]) | |
| 264 | mrset = set(missingrevs) |
|
264 | mrset = set(missingrevs) | |
| 265 | roots = set() |
|
265 | roots = set() | |
| 266 | for r in missingrevs: |
|
266 | for r in missingrevs: | |
| 267 | for p in cl.parentrevs(r): |
|
267 | for p in cl.parentrevs(r): | |
| 268 | if p == node.nullrev: |
|
268 | if p == node.nullrev: | |
| 269 | continue |
|
269 | continue | |
| 270 | if p not in children: |
|
270 | if p not in children: | |
| 271 | children[p] = [r] |
|
271 | children[p] = [r] | |
| 272 | else: |
|
272 | else: | |
| 273 | children[p].append(r) |
|
273 | children[p].append(r) | |
| 274 | if p not in mrset: |
|
274 | if p not in mrset: | |
| 275 | roots.add(p) |
|
275 | roots.add(p) | |
| 276 | if not roots: |
|
276 | if not roots: | |
| 277 | # no common revision to track copies from |
|
277 | # no common revision to track copies from | |
| 278 | return {} |
|
278 | return {} | |
| 279 | min_root = min(roots) |
|
279 | min_root = min(roots) | |
| 280 |
|
280 | |||
| 281 | from_head = set( |
|
281 | from_head = set( | |
| 282 | cl.reachableroots(min_root, [b.rev()], list(roots), includepath=True) |
|
282 | cl.reachableroots(min_root, [b.rev()], list(roots), includepath=True) | |
| 283 | ) |
|
283 | ) | |
| 284 |
|
284 | |||
| 285 | iterrevs = set(from_head) |
|
285 | iterrevs = set(from_head) | |
| 286 | iterrevs &= mrset |
|
286 | iterrevs &= mrset | |
| 287 | iterrevs.update(roots) |
|
287 | iterrevs.update(roots) | |
| 288 | iterrevs.remove(b.rev()) |
|
288 | iterrevs.remove(b.rev()) | |
| 289 | revs = sorted(iterrevs) |
|
289 | revs = sorted(iterrevs) | |
| 290 |
|
290 | |||
| 291 | if repo.filecopiesmode == b'changeset-sidedata': |
|
291 | if repo.filecopiesmode == b'changeset-sidedata': | |
| 292 | revinfo = _revinfo_getter(repo) |
|
292 | revinfo = _revinfo_getter(repo) | |
| 293 | return _combine_changeset_copies( |
|
293 | return _combine_changeset_copies( | |
| 294 | revs, children, b.rev(), revinfo, match, isancestor |
|
294 | revs, children, b.rev(), revinfo, match, isancestor | |
| 295 | ) |
|
295 | ) | |
| 296 | else: |
|
296 | else: | |
| 297 | revinfo = _revinfo_getter_extra(repo) |
|
297 | revinfo = _revinfo_getter_extra(repo) | |
| 298 | return _combine_changeset_copies_extra( |
|
298 | return _combine_changeset_copies_extra( | |
| 299 | revs, children, b.rev(), revinfo, match, isancestor |
|
299 | revs, children, b.rev(), revinfo, match, isancestor | |
| 300 | ) |
|
300 | ) | |
| 301 |
|
301 | |||
| 302 |
|
302 | |||
| 303 | def _combine_changeset_copies( |
|
303 | def _combine_changeset_copies( | |
| 304 | revs, children, targetrev, revinfo, match, isancestor |
|
304 | revs, children, targetrev, revinfo, match, isancestor | |
| 305 | ): |
|
305 | ): | |
| 306 | """combine the copies information for each item of iterrevs |
|
306 | """combine the copies information for each item of iterrevs | |
| 307 |
|
307 | |||
| 308 | revs: sorted iterable of revision to visit |
|
308 | revs: sorted iterable of revision to visit | |
| 309 | children: a {parent: [children]} mapping. |
|
309 | children: a {parent: [children]} mapping. | |
| 310 | targetrev: the final copies destination revision (not in iterrevs) |
|
310 | targetrev: the final copies destination revision (not in iterrevs) | |
| 311 | revinfo(rev): a function that return (p1, p2, p1copies, p2copies, removed) |
|
311 | revinfo(rev): a function that return (p1, p2, p1copies, p2copies, removed) | |
| 312 | match: a matcher |
|
312 | match: a matcher | |
| 313 |
|
313 | |||
| 314 | It returns the aggregated copies information for `targetrev`. |
|
314 | It returns the aggregated copies information for `targetrev`. | |
| 315 | """ |
|
315 | """ | |
| 316 |
|
316 | |||
| 317 | alwaysmatch = match.always() |
|
317 | alwaysmatch = match.always() | |
| 318 |
|
318 | |||
| 319 | if rustmod is not None and alwaysmatch: |
|
319 | if rustmod is not None and alwaysmatch: | |
| 320 | return rustmod.combine_changeset_copies( |
|
320 | return rustmod.combine_changeset_copies( | |
| 321 | list(revs), children, targetrev, revinfo, isancestor |
|
321 | list(revs), children, targetrev, revinfo, isancestor | |
| 322 | ) |
|
322 | ) | |
| 323 |
|
323 | |||
|
|
324 | isancestor = cached_is_ancestor(isancestor) | |||
|
|
325 | ||||
| 324 | all_copies = {} |
|
326 | all_copies = {} | |
| 325 | for r in revs: |
|
327 | for r in revs: | |
| 326 | copies = all_copies.pop(r, None) |
|
328 | copies = all_copies.pop(r, None) | |
| 327 | if copies is None: |
|
329 | if copies is None: | |
| 328 | # this is a root |
|
330 | # this is a root | |
| 329 | copies = {} |
|
331 | copies = {} | |
| 330 | for i, c in enumerate(children[r]): |
|
332 | for i, c in enumerate(children[r]): | |
| 331 | p1, p2, changes = revinfo(c) |
|
333 | p1, p2, changes = revinfo(c) | |
| 332 | childcopies = {} |
|
334 | childcopies = {} | |
| 333 | if r == p1: |
|
335 | if r == p1: | |
| 334 | parent = 1 |
|
336 | parent = 1 | |
| 335 | if changes is not None: |
|
337 | if changes is not None: | |
| 336 | childcopies = changes.copied_from_p1 |
|
338 | childcopies = changes.copied_from_p1 | |
| 337 | else: |
|
339 | else: | |
| 338 | assert r == p2 |
|
340 | assert r == p2 | |
| 339 | parent = 2 |
|
341 | parent = 2 | |
| 340 | if changes is not None: |
|
342 | if changes is not None: | |
| 341 | childcopies = changes.copied_from_p2 |
|
343 | childcopies = changes.copied_from_p2 | |
| 342 | if not alwaysmatch: |
|
344 | if not alwaysmatch: | |
| 343 | childcopies = { |
|
345 | childcopies = { | |
| 344 | dst: src for dst, src in childcopies.items() if match(dst) |
|
346 | dst: src for dst, src in childcopies.items() if match(dst) | |
| 345 | } |
|
347 | } | |
| 346 | newcopies = copies |
|
348 | newcopies = copies | |
| 347 | if childcopies: |
|
349 | if childcopies: | |
| 348 | newcopies = copies.copy() |
|
350 | newcopies = copies.copy() | |
| 349 | for dest, source in pycompat.iteritems(childcopies): |
|
351 | for dest, source in pycompat.iteritems(childcopies): | |
| 350 | prev = copies.get(source) |
|
352 | prev = copies.get(source) | |
| 351 | if prev is not None and prev[1] is not None: |
|
353 | if prev is not None and prev[1] is not None: | |
| 352 | source = prev[1] |
|
354 | source = prev[1] | |
| 353 | newcopies[dest] = (c, source) |
|
355 | newcopies[dest] = (c, source) | |
| 354 | assert newcopies is not copies |
|
356 | assert newcopies is not copies | |
| 355 | if changes is not None: |
|
357 | if changes is not None: | |
| 356 | for f in changes.removed: |
|
358 | for f in changes.removed: | |
| 357 | if f in newcopies: |
|
359 | if f in newcopies: | |
| 358 | if newcopies is copies: |
|
360 | if newcopies is copies: | |
| 359 | # copy on write to avoid affecting potential other |
|
361 | # copy on write to avoid affecting potential other | |
| 360 | # branches. when there are no other branches, this |
|
362 | # branches. when there are no other branches, this | |
| 361 | # could be avoided. |
|
363 | # could be avoided. | |
| 362 | newcopies = copies.copy() |
|
364 | newcopies = copies.copy() | |
| 363 | newcopies[f] = (c, None) |
|
365 | newcopies[f] = (c, None) | |
| 364 | othercopies = all_copies.get(c) |
|
366 | othercopies = all_copies.get(c) | |
| 365 | if othercopies is None: |
|
367 | if othercopies is None: | |
| 366 | all_copies[c] = newcopies |
|
368 | all_copies[c] = newcopies | |
| 367 | else: |
|
369 | else: | |
| 368 | # we are the second parent to work on c, we need to merge our |
|
370 | # we are the second parent to work on c, we need to merge our | |
| 369 | # work with the other. |
|
371 | # work with the other. | |
| 370 | # |
|
372 | # | |
| 371 | # In case of conflict, parent 1 take precedence over parent 2. |
|
373 | # In case of conflict, parent 1 take precedence over parent 2. | |
| 372 | # This is an arbitrary choice made anew when implementing |
|
374 | # This is an arbitrary choice made anew when implementing | |
| 373 | # changeset based copies. It was made without regards with |
|
375 | # changeset based copies. It was made without regards with | |
| 374 | # potential filelog related behavior. |
|
376 | # potential filelog related behavior. | |
| 375 | if parent == 1: |
|
377 | if parent == 1: | |
| 376 | _merge_copies_dict( |
|
378 | _merge_copies_dict( | |
| 377 | othercopies, newcopies, isancestor, changes |
|
379 | othercopies, newcopies, isancestor, changes | |
| 378 | ) |
|
380 | ) | |
| 379 | else: |
|
381 | else: | |
| 380 | _merge_copies_dict( |
|
382 | _merge_copies_dict( | |
| 381 | newcopies, othercopies, isancestor, changes |
|
383 | newcopies, othercopies, isancestor, changes | |
| 382 | ) |
|
384 | ) | |
| 383 | all_copies[c] = newcopies |
|
385 | all_copies[c] = newcopies | |
| 384 |
|
386 | |||
| 385 | final_copies = {} |
|
387 | final_copies = {} | |
| 386 | for dest, (tt, source) in all_copies[targetrev].items(): |
|
388 | for dest, (tt, source) in all_copies[targetrev].items(): | |
| 387 | if source is not None: |
|
389 | if source is not None: | |
| 388 | final_copies[dest] = source |
|
390 | final_copies[dest] = source | |
| 389 | return final_copies |
|
391 | return final_copies | |
| 390 |
|
392 | |||
| 391 |
|
393 | |||
| 392 | def _merge_copies_dict(minor, major, isancestor, changes): |
|
394 | def _merge_copies_dict(minor, major, isancestor, changes): | |
| 393 | """merge two copies-mapping together, minor and major |
|
395 | """merge two copies-mapping together, minor and major | |
| 394 |
|
396 | |||
| 395 | In case of conflict, value from "major" will be picked. |
|
397 | In case of conflict, value from "major" will be picked. | |
| 396 |
|
398 | |||
| 397 | - `isancestors(low_rev, high_rev)`: callable return True if `low_rev` is an |
|
399 | - `isancestors(low_rev, high_rev)`: callable return True if `low_rev` is an | |
| 398 | ancestors of `high_rev`, |
|
400 | ancestors of `high_rev`, | |
| 399 |
|
401 | |||
| 400 | - `ismerged(path)`: callable return True if `path` have been merged in the |
|
402 | - `ismerged(path)`: callable return True if `path` have been merged in the | |
| 401 | current revision, |
|
403 | current revision, | |
| 402 | """ |
|
404 | """ | |
| 403 | for dest, value in major.items(): |
|
405 | for dest, value in major.items(): | |
| 404 | other = minor.get(dest) |
|
406 | other = minor.get(dest) | |
| 405 | if other is None: |
|
407 | if other is None: | |
| 406 | minor[dest] = value |
|
408 | minor[dest] = value | |
| 407 | else: |
|
409 | else: | |
| 408 | new_tt = value[0] |
|
410 | new_tt = value[0] | |
| 409 | other_tt = other[0] |
|
411 | other_tt = other[0] | |
| 410 | if value[1] == other[1]: |
|
412 | if value[1] == other[1]: | |
| 411 | continue |
|
413 | continue | |
| 412 | # content from "major" wins, unless it is older |
|
414 | # content from "major" wins, unless it is older | |
| 413 | # than the branch point or there is a merge |
|
415 | # than the branch point or there is a merge | |
| 414 | if new_tt == other_tt: |
|
416 | if new_tt == other_tt: | |
| 415 | minor[dest] = value |
|
417 | minor[dest] = value | |
| 416 | elif ( |
|
418 | elif ( | |
| 417 | changes is not None |
|
419 | changes is not None | |
| 418 | and value[1] is None |
|
420 | and value[1] is None | |
| 419 | and dest in changes.salvaged |
|
421 | and dest in changes.salvaged | |
| 420 | ): |
|
422 | ): | |
| 421 | pass |
|
423 | pass | |
| 422 | elif ( |
|
424 | elif ( | |
| 423 | changes is not None |
|
425 | changes is not None | |
| 424 | and other[1] is None |
|
426 | and other[1] is None | |
| 425 | and dest in changes.salvaged |
|
427 | and dest in changes.salvaged | |
| 426 | ): |
|
428 | ): | |
| 427 | minor[dest] = value |
|
429 | minor[dest] = value | |
| 428 | elif changes is not None and dest in changes.merged: |
|
430 | elif changes is not None and dest in changes.merged: | |
| 429 | minor[dest] = value |
|
431 | minor[dest] = value | |
| 430 | elif not isancestor(new_tt, other_tt): |
|
432 | elif not isancestor(new_tt, other_tt): | |
| 431 | if value[1] is not None: |
|
433 | if value[1] is not None: | |
| 432 | minor[dest] = value |
|
434 | minor[dest] = value | |
| 433 | elif isancestor(other_tt, new_tt): |
|
435 | elif isancestor(other_tt, new_tt): | |
| 434 | minor[dest] = value |
|
436 | minor[dest] = value | |
| 435 |
|
437 | |||
| 436 |
|
438 | |||
| 437 | def _revinfo_getter_extra(repo): |
|
439 | def _revinfo_getter_extra(repo): | |
| 438 | """return a function that return multiple data given a <rev>"i |
|
440 | """return a function that return multiple data given a <rev>"i | |
| 439 |
|
441 | |||
| 440 | * p1: revision number of first parent |
|
442 | * p1: revision number of first parent | |
| 441 | * p2: revision number of first parent |
|
443 | * p2: revision number of first parent | |
| 442 | * p1copies: mapping of copies from p1 |
|
444 | * p1copies: mapping of copies from p1 | |
| 443 | * p2copies: mapping of copies from p2 |
|
445 | * p2copies: mapping of copies from p2 | |
| 444 | * removed: a list of removed files |
|
446 | * removed: a list of removed files | |
| 445 | * ismerged: a callback to know if file was merged in that revision |
|
447 | * ismerged: a callback to know if file was merged in that revision | |
| 446 | """ |
|
448 | """ | |
| 447 | cl = repo.changelog |
|
449 | cl = repo.changelog | |
| 448 | parents = cl.parentrevs |
|
450 | parents = cl.parentrevs | |
| 449 |
|
451 | |||
| 450 | def get_ismerged(rev): |
|
452 | def get_ismerged(rev): | |
| 451 | ctx = repo[rev] |
|
453 | ctx = repo[rev] | |
| 452 |
|
454 | |||
| 453 | def ismerged(path): |
|
455 | def ismerged(path): | |
| 454 | if path not in ctx.files(): |
|
456 | if path not in ctx.files(): | |
| 455 | return False |
|
457 | return False | |
| 456 | fctx = ctx[path] |
|
458 | fctx = ctx[path] | |
| 457 | parents = fctx._filelog.parents(fctx._filenode) |
|
459 | parents = fctx._filelog.parents(fctx._filenode) | |
| 458 | nb_parents = 0 |
|
460 | nb_parents = 0 | |
| 459 | for n in parents: |
|
461 | for n in parents: | |
| 460 | if n != node.nullid: |
|
462 | if n != node.nullid: | |
| 461 | nb_parents += 1 |
|
463 | nb_parents += 1 | |
| 462 | return nb_parents >= 2 |
|
464 | return nb_parents >= 2 | |
| 463 |
|
465 | |||
| 464 | return ismerged |
|
466 | return ismerged | |
| 465 |
|
467 | |||
| 466 | def revinfo(rev): |
|
468 | def revinfo(rev): | |
| 467 | p1, p2 = parents(rev) |
|
469 | p1, p2 = parents(rev) | |
| 468 | ctx = repo[rev] |
|
470 | ctx = repo[rev] | |
| 469 | p1copies, p2copies = ctx._copies |
|
471 | p1copies, p2copies = ctx._copies | |
| 470 | removed = ctx.filesremoved() |
|
472 | removed = ctx.filesremoved() | |
| 471 | return p1, p2, p1copies, p2copies, removed, get_ismerged(rev) |
|
473 | return p1, p2, p1copies, p2copies, removed, get_ismerged(rev) | |
| 472 |
|
474 | |||
| 473 | return revinfo |
|
475 | return revinfo | |
| 474 |
|
476 | |||
| 475 |
|
477 | |||
| 476 | def _combine_changeset_copies_extra( |
|
478 | def _combine_changeset_copies_extra( | |
| 477 | revs, children, targetrev, revinfo, match, isancestor |
|
479 | revs, children, targetrev, revinfo, match, isancestor | |
| 478 | ): |
|
480 | ): | |
| 479 | """version of `_combine_changeset_copies` that works with the Google |
|
481 | """version of `_combine_changeset_copies` that works with the Google | |
| 480 | specific "extra" based storage for copy information""" |
|
482 | specific "extra" based storage for copy information""" | |
| 481 | all_copies = {} |
|
483 | all_copies = {} | |
| 482 | alwaysmatch = match.always() |
|
484 | alwaysmatch = match.always() | |
| 483 | for r in revs: |
|
485 | for r in revs: | |
| 484 | copies = all_copies.pop(r, None) |
|
486 | copies = all_copies.pop(r, None) | |
| 485 | if copies is None: |
|
487 | if copies is None: | |
| 486 | # this is a root |
|
488 | # this is a root | |
| 487 | copies = {} |
|
489 | copies = {} | |
| 488 | for i, c in enumerate(children[r]): |
|
490 | for i, c in enumerate(children[r]): | |
| 489 | p1, p2, p1copies, p2copies, removed, ismerged = revinfo(c) |
|
491 | p1, p2, p1copies, p2copies, removed, ismerged = revinfo(c) | |
| 490 | if r == p1: |
|
492 | if r == p1: | |
| 491 | parent = 1 |
|
493 | parent = 1 | |
| 492 | childcopies = p1copies |
|
494 | childcopies = p1copies | |
| 493 | else: |
|
495 | else: | |
| 494 | assert r == p2 |
|
496 | assert r == p2 | |
| 495 | parent = 2 |
|
497 | parent = 2 | |
| 496 | childcopies = p2copies |
|
498 | childcopies = p2copies | |
| 497 | if not alwaysmatch: |
|
499 | if not alwaysmatch: | |
| 498 | childcopies = { |
|
500 | childcopies = { | |
| 499 | dst: src for dst, src in childcopies.items() if match(dst) |
|
501 | dst: src for dst, src in childcopies.items() if match(dst) | |
| 500 | } |
|
502 | } | |
| 501 | newcopies = copies |
|
503 | newcopies = copies | |
| 502 | if childcopies: |
|
504 | if childcopies: | |
| 503 | newcopies = copies.copy() |
|
505 | newcopies = copies.copy() | |
| 504 | for dest, source in pycompat.iteritems(childcopies): |
|
506 | for dest, source in pycompat.iteritems(childcopies): | |
| 505 | prev = copies.get(source) |
|
507 | prev = copies.get(source) | |
| 506 | if prev is not None and prev[1] is not None: |
|
508 | if prev is not None and prev[1] is not None: | |
| 507 | source = prev[1] |
|
509 | source = prev[1] | |
| 508 | newcopies[dest] = (c, source) |
|
510 | newcopies[dest] = (c, source) | |
| 509 | assert newcopies is not copies |
|
511 | assert newcopies is not copies | |
| 510 | for f in removed: |
|
512 | for f in removed: | |
| 511 | if f in newcopies: |
|
513 | if f in newcopies: | |
| 512 | if newcopies is copies: |
|
514 | if newcopies is copies: | |
| 513 | # copy on write to avoid affecting potential other |
|
515 | # copy on write to avoid affecting potential other | |
| 514 | # branches. when there are no other branches, this |
|
516 | # branches. when there are no other branches, this | |
| 515 | # could be avoided. |
|
517 | # could be avoided. | |
| 516 | newcopies = copies.copy() |
|
518 | newcopies = copies.copy() | |
| 517 | newcopies[f] = (c, None) |
|
519 | newcopies[f] = (c, None) | |
| 518 | othercopies = all_copies.get(c) |
|
520 | othercopies = all_copies.get(c) | |
| 519 | if othercopies is None: |
|
521 | if othercopies is None: | |
| 520 | all_copies[c] = newcopies |
|
522 | all_copies[c] = newcopies | |
| 521 | else: |
|
523 | else: | |
| 522 | # we are the second parent to work on c, we need to merge our |
|
524 | # we are the second parent to work on c, we need to merge our | |
| 523 | # work with the other. |
|
525 | # work with the other. | |
| 524 | # |
|
526 | # | |
| 525 | # In case of conflict, parent 1 take precedence over parent 2. |
|
527 | # In case of conflict, parent 1 take precedence over parent 2. | |
| 526 | # This is an arbitrary choice made anew when implementing |
|
528 | # This is an arbitrary choice made anew when implementing | |
| 527 | # changeset based copies. It was made without regards with |
|
529 | # changeset based copies. It was made without regards with | |
| 528 | # potential filelog related behavior. |
|
530 | # potential filelog related behavior. | |
| 529 | if parent == 1: |
|
531 | if parent == 1: | |
| 530 | _merge_copies_dict_extra( |
|
532 | _merge_copies_dict_extra( | |
| 531 | othercopies, newcopies, isancestor, ismerged |
|
533 | othercopies, newcopies, isancestor, ismerged | |
| 532 | ) |
|
534 | ) | |
| 533 | else: |
|
535 | else: | |
| 534 | _merge_copies_dict_extra( |
|
536 | _merge_copies_dict_extra( | |
| 535 | newcopies, othercopies, isancestor, ismerged |
|
537 | newcopies, othercopies, isancestor, ismerged | |
| 536 | ) |
|
538 | ) | |
| 537 | all_copies[c] = newcopies |
|
539 | all_copies[c] = newcopies | |
| 538 |
|
540 | |||
| 539 | final_copies = {} |
|
541 | final_copies = {} | |
| 540 | for dest, (tt, source) in all_copies[targetrev].items(): |
|
542 | for dest, (tt, source) in all_copies[targetrev].items(): | |
| 541 | if source is not None: |
|
543 | if source is not None: | |
| 542 | final_copies[dest] = source |
|
544 | final_copies[dest] = source | |
| 543 | return final_copies |
|
545 | return final_copies | |
| 544 |
|
546 | |||
| 545 |
|
547 | |||
| 546 | def _merge_copies_dict_extra(minor, major, isancestor, ismerged): |
|
548 | def _merge_copies_dict_extra(minor, major, isancestor, ismerged): | |
| 547 | """version of `_merge_copies_dict` that works with the Google |
|
549 | """version of `_merge_copies_dict` that works with the Google | |
| 548 | specific "extra" based storage for copy information""" |
|
550 | specific "extra" based storage for copy information""" | |
| 549 | for dest, value in major.items(): |
|
551 | for dest, value in major.items(): | |
| 550 | other = minor.get(dest) |
|
552 | other = minor.get(dest) | |
| 551 | if other is None: |
|
553 | if other is None: | |
| 552 | minor[dest] = value |
|
554 | minor[dest] = value | |
| 553 | else: |
|
555 | else: | |
| 554 | new_tt = value[0] |
|
556 | new_tt = value[0] | |
| 555 | other_tt = other[0] |
|
557 | other_tt = other[0] | |
| 556 | if value[1] == other[1]: |
|
558 | if value[1] == other[1]: | |
| 557 | continue |
|
559 | continue | |
| 558 | # content from "major" wins, unless it is older |
|
560 | # content from "major" wins, unless it is older | |
| 559 | # than the branch point or there is a merge |
|
561 | # than the branch point or there is a merge | |
| 560 | if ( |
|
562 | if ( | |
| 561 | new_tt == other_tt |
|
563 | new_tt == other_tt | |
| 562 | or not isancestor(new_tt, other_tt) |
|
564 | or not isancestor(new_tt, other_tt) | |
| 563 | or ismerged(dest) |
|
565 | or ismerged(dest) | |
| 564 | ): |
|
566 | ): | |
| 565 | minor[dest] = value |
|
567 | minor[dest] = value | |
| 566 |
|
568 | |||
| 567 |
|
569 | |||
| 568 | def _forwardcopies(a, b, base=None, match=None): |
|
570 | def _forwardcopies(a, b, base=None, match=None): | |
| 569 | """find {dst@b: src@a} copy mapping where a is an ancestor of b""" |
|
571 | """find {dst@b: src@a} copy mapping where a is an ancestor of b""" | |
| 570 |
|
572 | |||
| 571 | if base is None: |
|
573 | if base is None: | |
| 572 | base = a |
|
574 | base = a | |
| 573 | match = a.repo().narrowmatch(match) |
|
575 | match = a.repo().narrowmatch(match) | |
| 574 | # check for working copy |
|
576 | # check for working copy | |
| 575 | if b.rev() is None: |
|
577 | if b.rev() is None: | |
| 576 | cm = _committedforwardcopies(a, b.p1(), base, match) |
|
578 | cm = _committedforwardcopies(a, b.p1(), base, match) | |
| 577 | # combine copies from dirstate if necessary |
|
579 | # combine copies from dirstate if necessary | |
| 578 | copies = _chain(cm, _dirstatecopies(b._repo, match)) |
|
580 | copies = _chain(cm, _dirstatecopies(b._repo, match)) | |
| 579 | else: |
|
581 | else: | |
| 580 | copies = _committedforwardcopies(a, b, base, match) |
|
582 | copies = _committedforwardcopies(a, b, base, match) | |
| 581 | return copies |
|
583 | return copies | |
| 582 |
|
584 | |||
| 583 |
|
585 | |||
| 584 | def _backwardrenames(a, b, match): |
|
586 | def _backwardrenames(a, b, match): | |
| 585 | if a._repo.ui.config(b'experimental', b'copytrace') == b'off': |
|
587 | if a._repo.ui.config(b'experimental', b'copytrace') == b'off': | |
| 586 | return {} |
|
588 | return {} | |
| 587 |
|
589 | |||
| 588 | # Even though we're not taking copies into account, 1:n rename situations |
|
590 | # Even though we're not taking copies into account, 1:n rename situations | |
| 589 | # can still exist (e.g. hg cp a b; hg mv a c). In those cases we |
|
591 | # can still exist (e.g. hg cp a b; hg mv a c). In those cases we | |
| 590 | # arbitrarily pick one of the renames. |
|
592 | # arbitrarily pick one of the renames. | |
| 591 | # We don't want to pass in "match" here, since that would filter |
|
593 | # We don't want to pass in "match" here, since that would filter | |
| 592 | # the destination by it. Since we're reversing the copies, we want |
|
594 | # the destination by it. Since we're reversing the copies, we want | |
| 593 | # to filter the source instead. |
|
595 | # to filter the source instead. | |
| 594 | f = _forwardcopies(b, a) |
|
596 | f = _forwardcopies(b, a) | |
| 595 | r = {} |
|
597 | r = {} | |
| 596 | for k, v in sorted(pycompat.iteritems(f)): |
|
598 | for k, v in sorted(pycompat.iteritems(f)): | |
| 597 | if match and not match(v): |
|
599 | if match and not match(v): | |
| 598 | continue |
|
600 | continue | |
| 599 | # remove copies |
|
601 | # remove copies | |
| 600 | if v in a: |
|
602 | if v in a: | |
| 601 | continue |
|
603 | continue | |
| 602 | r[v] = k |
|
604 | r[v] = k | |
| 603 | return r |
|
605 | return r | |
| 604 |
|
606 | |||
| 605 |
|
607 | |||
| 606 | def pathcopies(x, y, match=None): |
|
608 | def pathcopies(x, y, match=None): | |
| 607 | """find {dst@y: src@x} copy mapping for directed compare""" |
|
609 | """find {dst@y: src@x} copy mapping for directed compare""" | |
| 608 | repo = x._repo |
|
610 | repo = x._repo | |
| 609 | debug = repo.ui.debugflag and repo.ui.configbool(b'devel', b'debug.copies') |
|
611 | debug = repo.ui.debugflag and repo.ui.configbool(b'devel', b'debug.copies') | |
| 610 | if debug: |
|
612 | if debug: | |
| 611 | repo.ui.debug( |
|
613 | repo.ui.debug( | |
| 612 | b'debug.copies: searching copies from %s to %s\n' % (x, y) |
|
614 | b'debug.copies: searching copies from %s to %s\n' % (x, y) | |
| 613 | ) |
|
615 | ) | |
| 614 | if x == y or not x or not y: |
|
616 | if x == y or not x or not y: | |
| 615 | return {} |
|
617 | return {} | |
| 616 | if y.rev() is None and x == y.p1(): |
|
618 | if y.rev() is None and x == y.p1(): | |
| 617 | if debug: |
|
619 | if debug: | |
| 618 | repo.ui.debug(b'debug.copies: search mode: dirstate\n') |
|
620 | repo.ui.debug(b'debug.copies: search mode: dirstate\n') | |
| 619 | # short-circuit to avoid issues with merge states |
|
621 | # short-circuit to avoid issues with merge states | |
| 620 | return _dirstatecopies(repo, match) |
|
622 | return _dirstatecopies(repo, match) | |
| 621 | a = y.ancestor(x) |
|
623 | a = y.ancestor(x) | |
| 622 | if a == x: |
|
624 | if a == x: | |
| 623 | if debug: |
|
625 | if debug: | |
| 624 | repo.ui.debug(b'debug.copies: search mode: forward\n') |
|
626 | repo.ui.debug(b'debug.copies: search mode: forward\n') | |
| 625 | copies = _forwardcopies(x, y, match=match) |
|
627 | copies = _forwardcopies(x, y, match=match) | |
| 626 | elif a == y: |
|
628 | elif a == y: | |
| 627 | if debug: |
|
629 | if debug: | |
| 628 | repo.ui.debug(b'debug.copies: search mode: backward\n') |
|
630 | repo.ui.debug(b'debug.copies: search mode: backward\n') | |
| 629 | copies = _backwardrenames(x, y, match=match) |
|
631 | copies = _backwardrenames(x, y, match=match) | |
| 630 | else: |
|
632 | else: | |
| 631 | if debug: |
|
633 | if debug: | |
| 632 | repo.ui.debug(b'debug.copies: search mode: combined\n') |
|
634 | repo.ui.debug(b'debug.copies: search mode: combined\n') | |
| 633 | base = None |
|
635 | base = None | |
| 634 | if a.rev() != node.nullrev: |
|
636 | if a.rev() != node.nullrev: | |
| 635 | base = x |
|
637 | base = x | |
| 636 | copies = _chain( |
|
638 | copies = _chain( | |
| 637 | _backwardrenames(x, a, match=match), |
|
639 | _backwardrenames(x, a, match=match), | |
| 638 | _forwardcopies(a, y, base, match=match), |
|
640 | _forwardcopies(a, y, base, match=match), | |
| 639 | ) |
|
641 | ) | |
| 640 | _filter(x, y, copies) |
|
642 | _filter(x, y, copies) | |
| 641 | return copies |
|
643 | return copies | |
| 642 |
|
644 | |||
| 643 |
|
645 | |||
| 644 | def mergecopies(repo, c1, c2, base): |
|
646 | def mergecopies(repo, c1, c2, base): | |
| 645 | """ |
|
647 | """ | |
| 646 | Finds moves and copies between context c1 and c2 that are relevant for |
|
648 | Finds moves and copies between context c1 and c2 that are relevant for | |
| 647 | merging. 'base' will be used as the merge base. |
|
649 | merging. 'base' will be used as the merge base. | |
| 648 |
|
650 | |||
| 649 | Copytracing is used in commands like rebase, merge, unshelve, etc to merge |
|
651 | Copytracing is used in commands like rebase, merge, unshelve, etc to merge | |
| 650 | files that were moved/ copied in one merge parent and modified in another. |
|
652 | files that were moved/ copied in one merge parent and modified in another. | |
| 651 | For example: |
|
653 | For example: | |
| 652 |
|
654 | |||
| 653 | o ---> 4 another commit |
|
655 | o ---> 4 another commit | |
| 654 | | |
|
656 | | | |
| 655 | | o ---> 3 commit that modifies a.txt |
|
657 | | o ---> 3 commit that modifies a.txt | |
| 656 | | / |
|
658 | | / | |
| 657 | o / ---> 2 commit that moves a.txt to b.txt |
|
659 | o / ---> 2 commit that moves a.txt to b.txt | |
| 658 | |/ |
|
660 | |/ | |
| 659 | o ---> 1 merge base |
|
661 | o ---> 1 merge base | |
| 660 |
|
662 | |||
| 661 | If we try to rebase revision 3 on revision 4, since there is no a.txt in |
|
663 | If we try to rebase revision 3 on revision 4, since there is no a.txt in | |
| 662 | revision 4, and if user have copytrace disabled, we prints the following |
|
664 | revision 4, and if user have copytrace disabled, we prints the following | |
| 663 | message: |
|
665 | message: | |
| 664 |
|
666 | |||
| 665 | ```other changed <file> which local deleted``` |
|
667 | ```other changed <file> which local deleted``` | |
| 666 |
|
668 | |||
| 667 | Returns a tuple where: |
|
669 | Returns a tuple where: | |
| 668 |
|
670 | |||
| 669 | "branch_copies" an instance of branch_copies. |
|
671 | "branch_copies" an instance of branch_copies. | |
| 670 |
|
672 | |||
| 671 | "diverge" is a mapping of source name -> list of destination names |
|
673 | "diverge" is a mapping of source name -> list of destination names | |
| 672 | for divergent renames. |
|
674 | for divergent renames. | |
| 673 |
|
675 | |||
| 674 | This function calls different copytracing algorithms based on config. |
|
676 | This function calls different copytracing algorithms based on config. | |
| 675 | """ |
|
677 | """ | |
| 676 | # avoid silly behavior for update from empty dir |
|
678 | # avoid silly behavior for update from empty dir | |
| 677 | if not c1 or not c2 or c1 == c2: |
|
679 | if not c1 or not c2 or c1 == c2: | |
| 678 | return branch_copies(), branch_copies(), {} |
|
680 | return branch_copies(), branch_copies(), {} | |
| 679 |
|
681 | |||
| 680 | narrowmatch = c1.repo().narrowmatch() |
|
682 | narrowmatch = c1.repo().narrowmatch() | |
| 681 |
|
683 | |||
| 682 | # avoid silly behavior for parent -> working dir |
|
684 | # avoid silly behavior for parent -> working dir | |
| 683 | if c2.node() is None and c1.node() == repo.dirstate.p1(): |
|
685 | if c2.node() is None and c1.node() == repo.dirstate.p1(): | |
| 684 | return ( |
|
686 | return ( | |
| 685 | branch_copies(_dirstatecopies(repo, narrowmatch)), |
|
687 | branch_copies(_dirstatecopies(repo, narrowmatch)), | |
| 686 | branch_copies(), |
|
688 | branch_copies(), | |
| 687 | {}, |
|
689 | {}, | |
| 688 | ) |
|
690 | ) | |
| 689 |
|
691 | |||
| 690 | copytracing = repo.ui.config(b'experimental', b'copytrace') |
|
692 | copytracing = repo.ui.config(b'experimental', b'copytrace') | |
| 691 | if stringutil.parsebool(copytracing) is False: |
|
693 | if stringutil.parsebool(copytracing) is False: | |
| 692 | # stringutil.parsebool() returns None when it is unable to parse the |
|
694 | # stringutil.parsebool() returns None when it is unable to parse the | |
| 693 | # value, so we should rely on making sure copytracing is on such cases |
|
695 | # value, so we should rely on making sure copytracing is on such cases | |
| 694 | return branch_copies(), branch_copies(), {} |
|
696 | return branch_copies(), branch_copies(), {} | |
| 695 |
|
697 | |||
| 696 | if usechangesetcentricalgo(repo): |
|
698 | if usechangesetcentricalgo(repo): | |
| 697 | # The heuristics don't make sense when we need changeset-centric algos |
|
699 | # The heuristics don't make sense when we need changeset-centric algos | |
| 698 | return _fullcopytracing(repo, c1, c2, base) |
|
700 | return _fullcopytracing(repo, c1, c2, base) | |
| 699 |
|
701 | |||
| 700 | # Copy trace disabling is explicitly below the node == p1 logic above |
|
702 | # Copy trace disabling is explicitly below the node == p1 logic above | |
| 701 | # because the logic above is required for a simple copy to be kept across a |
|
703 | # because the logic above is required for a simple copy to be kept across a | |
| 702 | # rebase. |
|
704 | # rebase. | |
| 703 | if copytracing == b'heuristics': |
|
705 | if copytracing == b'heuristics': | |
| 704 | # Do full copytracing if only non-public revisions are involved as |
|
706 | # Do full copytracing if only non-public revisions are involved as | |
| 705 | # that will be fast enough and will also cover the copies which could |
|
707 | # that will be fast enough and will also cover the copies which could | |
| 706 | # be missed by heuristics |
|
708 | # be missed by heuristics | |
| 707 | if _isfullcopytraceable(repo, c1, base): |
|
709 | if _isfullcopytraceable(repo, c1, base): | |
| 708 | return _fullcopytracing(repo, c1, c2, base) |
|
710 | return _fullcopytracing(repo, c1, c2, base) | |
| 709 | return _heuristicscopytracing(repo, c1, c2, base) |
|
711 | return _heuristicscopytracing(repo, c1, c2, base) | |
| 710 | else: |
|
712 | else: | |
| 711 | return _fullcopytracing(repo, c1, c2, base) |
|
713 | return _fullcopytracing(repo, c1, c2, base) | |
| 712 |
|
714 | |||
| 713 |
|
715 | |||
| 714 | def _isfullcopytraceable(repo, c1, base): |
|
716 | def _isfullcopytraceable(repo, c1, base): | |
| 715 | """Checks that if base, source and destination are all no-public branches, |
|
717 | """Checks that if base, source and destination are all no-public branches, | |
| 716 | if yes let's use the full copytrace algorithm for increased capabilities |
|
718 | if yes let's use the full copytrace algorithm for increased capabilities | |
| 717 | since it will be fast enough. |
|
719 | since it will be fast enough. | |
| 718 |
|
720 | |||
| 719 | `experimental.copytrace.sourcecommitlimit` can be used to set a limit for |
|
721 | `experimental.copytrace.sourcecommitlimit` can be used to set a limit for | |
| 720 | number of changesets from c1 to base such that if number of changesets are |
|
722 | number of changesets from c1 to base such that if number of changesets are | |
| 721 | more than the limit, full copytracing algorithm won't be used. |
|
723 | more than the limit, full copytracing algorithm won't be used. | |
| 722 | """ |
|
724 | """ | |
| 723 | if c1.rev() is None: |
|
725 | if c1.rev() is None: | |
| 724 | c1 = c1.p1() |
|
726 | c1 = c1.p1() | |
| 725 | if c1.mutable() and base.mutable(): |
|
727 | if c1.mutable() and base.mutable(): | |
| 726 | sourcecommitlimit = repo.ui.configint( |
|
728 | sourcecommitlimit = repo.ui.configint( | |
| 727 | b'experimental', b'copytrace.sourcecommitlimit' |
|
729 | b'experimental', b'copytrace.sourcecommitlimit' | |
| 728 | ) |
|
730 | ) | |
| 729 | commits = len(repo.revs(b'%d::%d', base.rev(), c1.rev())) |
|
731 | commits = len(repo.revs(b'%d::%d', base.rev(), c1.rev())) | |
| 730 | return commits < sourcecommitlimit |
|
732 | return commits < sourcecommitlimit | |
| 731 | return False |
|
733 | return False | |
| 732 |
|
734 | |||
| 733 |
|
735 | |||
| 734 | def _checksinglesidecopies( |
|
736 | def _checksinglesidecopies( | |
| 735 | src, dsts1, m1, m2, mb, c2, base, copy, renamedelete |
|
737 | src, dsts1, m1, m2, mb, c2, base, copy, renamedelete | |
| 736 | ): |
|
738 | ): | |
| 737 | if src not in m2: |
|
739 | if src not in m2: | |
| 738 | # deleted on side 2 |
|
740 | # deleted on side 2 | |
| 739 | if src not in m1: |
|
741 | if src not in m1: | |
| 740 | # renamed on side 1, deleted on side 2 |
|
742 | # renamed on side 1, deleted on side 2 | |
| 741 | renamedelete[src] = dsts1 |
|
743 | renamedelete[src] = dsts1 | |
| 742 | elif src not in mb: |
|
744 | elif src not in mb: | |
| 743 | # Work around the "short-circuit to avoid issues with merge states" |
|
745 | # Work around the "short-circuit to avoid issues with merge states" | |
| 744 | # thing in pathcopies(): pathcopies(x, y) can return a copy where the |
|
746 | # thing in pathcopies(): pathcopies(x, y) can return a copy where the | |
| 745 | # destination doesn't exist in y. |
|
747 | # destination doesn't exist in y. | |
| 746 | pass |
|
748 | pass | |
| 747 | elif mb[src] != m2[src] and not _related(c2[src], base[src]): |
|
749 | elif mb[src] != m2[src] and not _related(c2[src], base[src]): | |
| 748 | return |
|
750 | return | |
| 749 | elif mb[src] != m2[src] or mb.flags(src) != m2.flags(src): |
|
751 | elif mb[src] != m2[src] or mb.flags(src) != m2.flags(src): | |
| 750 | # modified on side 2 |
|
752 | # modified on side 2 | |
| 751 | for dst in dsts1: |
|
753 | for dst in dsts1: | |
| 752 | copy[dst] = src |
|
754 | copy[dst] = src | |
| 753 |
|
755 | |||
| 754 |
|
756 | |||
| 755 | class branch_copies(object): |
|
757 | class branch_copies(object): | |
| 756 | """Information about copies made on one side of a merge/graft. |
|
758 | """Information about copies made on one side of a merge/graft. | |
| 757 |
|
759 | |||
| 758 | "copy" is a mapping from destination name -> source name, |
|
760 | "copy" is a mapping from destination name -> source name, | |
| 759 | where source is in c1 and destination is in c2 or vice-versa. |
|
761 | where source is in c1 and destination is in c2 or vice-versa. | |
| 760 |
|
762 | |||
| 761 | "movewithdir" is a mapping from source name -> destination name, |
|
763 | "movewithdir" is a mapping from source name -> destination name, | |
| 762 | where the file at source present in one context but not the other |
|
764 | where the file at source present in one context but not the other | |
| 763 | needs to be moved to destination by the merge process, because the |
|
765 | needs to be moved to destination by the merge process, because the | |
| 764 | other context moved the directory it is in. |
|
766 | other context moved the directory it is in. | |
| 765 |
|
767 | |||
| 766 | "renamedelete" is a mapping of source name -> list of destination |
|
768 | "renamedelete" is a mapping of source name -> list of destination | |
| 767 | names for files deleted in c1 that were renamed in c2 or vice-versa. |
|
769 | names for files deleted in c1 that were renamed in c2 or vice-versa. | |
| 768 |
|
770 | |||
| 769 | "dirmove" is a mapping of detected source dir -> destination dir renames. |
|
771 | "dirmove" is a mapping of detected source dir -> destination dir renames. | |
| 770 | This is needed for handling changes to new files previously grafted into |
|
772 | This is needed for handling changes to new files previously grafted into | |
| 771 | renamed directories. |
|
773 | renamed directories. | |
| 772 | """ |
|
774 | """ | |
| 773 |
|
775 | |||
| 774 | def __init__( |
|
776 | def __init__( | |
| 775 | self, copy=None, renamedelete=None, dirmove=None, movewithdir=None |
|
777 | self, copy=None, renamedelete=None, dirmove=None, movewithdir=None | |
| 776 | ): |
|
778 | ): | |
| 777 | self.copy = {} if copy is None else copy |
|
779 | self.copy = {} if copy is None else copy | |
| 778 | self.renamedelete = {} if renamedelete is None else renamedelete |
|
780 | self.renamedelete = {} if renamedelete is None else renamedelete | |
| 779 | self.dirmove = {} if dirmove is None else dirmove |
|
781 | self.dirmove = {} if dirmove is None else dirmove | |
| 780 | self.movewithdir = {} if movewithdir is None else movewithdir |
|
782 | self.movewithdir = {} if movewithdir is None else movewithdir | |
| 781 |
|
783 | |||
| 782 | def __repr__(self): |
|
784 | def __repr__(self): | |
| 783 | return '<branch_copies\n copy=%r\n renamedelete=%r\n dirmove=%r\n movewithdir=%r\n>' % ( |
|
785 | return '<branch_copies\n copy=%r\n renamedelete=%r\n dirmove=%r\n movewithdir=%r\n>' % ( | |
| 784 | self.copy, |
|
786 | self.copy, | |
| 785 | self.renamedelete, |
|
787 | self.renamedelete, | |
| 786 | self.dirmove, |
|
788 | self.dirmove, | |
| 787 | self.movewithdir, |
|
789 | self.movewithdir, | |
| 788 | ) |
|
790 | ) | |
| 789 |
|
791 | |||
| 790 |
|
792 | |||
| 791 | def _fullcopytracing(repo, c1, c2, base): |
|
793 | def _fullcopytracing(repo, c1, c2, base): | |
| 792 | """The full copytracing algorithm which finds all the new files that were |
|
794 | """The full copytracing algorithm which finds all the new files that were | |
| 793 | added from merge base up to the top commit and for each file it checks if |
|
795 | added from merge base up to the top commit and for each file it checks if | |
| 794 | this file was copied from another file. |
|
796 | this file was copied from another file. | |
| 795 |
|
797 | |||
| 796 | This is pretty slow when a lot of changesets are involved but will track all |
|
798 | This is pretty slow when a lot of changesets are involved but will track all | |
| 797 | the copies. |
|
799 | the copies. | |
| 798 | """ |
|
800 | """ | |
| 799 | m1 = c1.manifest() |
|
801 | m1 = c1.manifest() | |
| 800 | m2 = c2.manifest() |
|
802 | m2 = c2.manifest() | |
| 801 | mb = base.manifest() |
|
803 | mb = base.manifest() | |
| 802 |
|
804 | |||
| 803 | copies1 = pathcopies(base, c1) |
|
805 | copies1 = pathcopies(base, c1) | |
| 804 | copies2 = pathcopies(base, c2) |
|
806 | copies2 = pathcopies(base, c2) | |
| 805 |
|
807 | |||
| 806 | if not (copies1 or copies2): |
|
808 | if not (copies1 or copies2): | |
| 807 | return branch_copies(), branch_copies(), {} |
|
809 | return branch_copies(), branch_copies(), {} | |
| 808 |
|
810 | |||
| 809 | inversecopies1 = {} |
|
811 | inversecopies1 = {} | |
| 810 | inversecopies2 = {} |
|
812 | inversecopies2 = {} | |
| 811 | for dst, src in copies1.items(): |
|
813 | for dst, src in copies1.items(): | |
| 812 | inversecopies1.setdefault(src, []).append(dst) |
|
814 | inversecopies1.setdefault(src, []).append(dst) | |
| 813 | for dst, src in copies2.items(): |
|
815 | for dst, src in copies2.items(): | |
| 814 | inversecopies2.setdefault(src, []).append(dst) |
|
816 | inversecopies2.setdefault(src, []).append(dst) | |
| 815 |
|
817 | |||
| 816 | copy1 = {} |
|
818 | copy1 = {} | |
| 817 | copy2 = {} |
|
819 | copy2 = {} | |
| 818 | diverge = {} |
|
820 | diverge = {} | |
| 819 | renamedelete1 = {} |
|
821 | renamedelete1 = {} | |
| 820 | renamedelete2 = {} |
|
822 | renamedelete2 = {} | |
| 821 | allsources = set(inversecopies1) | set(inversecopies2) |
|
823 | allsources = set(inversecopies1) | set(inversecopies2) | |
| 822 | for src in allsources: |
|
824 | for src in allsources: | |
| 823 | dsts1 = inversecopies1.get(src) |
|
825 | dsts1 = inversecopies1.get(src) | |
| 824 | dsts2 = inversecopies2.get(src) |
|
826 | dsts2 = inversecopies2.get(src) | |
| 825 | if dsts1 and dsts2: |
|
827 | if dsts1 and dsts2: | |
| 826 | # copied/renamed on both sides |
|
828 | # copied/renamed on both sides | |
| 827 | if src not in m1 and src not in m2: |
|
829 | if src not in m1 and src not in m2: | |
| 828 | # renamed on both sides |
|
830 | # renamed on both sides | |
| 829 | dsts1 = set(dsts1) |
|
831 | dsts1 = set(dsts1) | |
| 830 | dsts2 = set(dsts2) |
|
832 | dsts2 = set(dsts2) | |
| 831 | # If there's some overlap in the rename destinations, we |
|
833 | # If there's some overlap in the rename destinations, we | |
| 832 | # consider it not divergent. For example, if side 1 copies 'a' |
|
834 | # consider it not divergent. For example, if side 1 copies 'a' | |
| 833 | # to 'b' and 'c' and deletes 'a', and side 2 copies 'a' to 'c' |
|
835 | # to 'b' and 'c' and deletes 'a', and side 2 copies 'a' to 'c' | |
| 834 | # and 'd' and deletes 'a'. |
|
836 | # and 'd' and deletes 'a'. | |
| 835 | if dsts1 & dsts2: |
|
837 | if dsts1 & dsts2: | |
| 836 | for dst in dsts1 & dsts2: |
|
838 | for dst in dsts1 & dsts2: | |
| 837 | copy1[dst] = src |
|
839 | copy1[dst] = src | |
| 838 | copy2[dst] = src |
|
840 | copy2[dst] = src | |
| 839 | else: |
|
841 | else: | |
| 840 | diverge[src] = sorted(dsts1 | dsts2) |
|
842 | diverge[src] = sorted(dsts1 | dsts2) | |
| 841 | elif src in m1 and src in m2: |
|
843 | elif src in m1 and src in m2: | |
| 842 | # copied on both sides |
|
844 | # copied on both sides | |
| 843 | dsts1 = set(dsts1) |
|
845 | dsts1 = set(dsts1) | |
| 844 | dsts2 = set(dsts2) |
|
846 | dsts2 = set(dsts2) | |
| 845 | for dst in dsts1 & dsts2: |
|
847 | for dst in dsts1 & dsts2: | |
| 846 | copy1[dst] = src |
|
848 | copy1[dst] = src | |
| 847 | copy2[dst] = src |
|
849 | copy2[dst] = src | |
| 848 | # TODO: Handle cases where it was renamed on one side and copied |
|
850 | # TODO: Handle cases where it was renamed on one side and copied | |
| 849 | # on the other side |
|
851 | # on the other side | |
| 850 | elif dsts1: |
|
852 | elif dsts1: | |
| 851 | # copied/renamed only on side 1 |
|
853 | # copied/renamed only on side 1 | |
| 852 | _checksinglesidecopies( |
|
854 | _checksinglesidecopies( | |
| 853 | src, dsts1, m1, m2, mb, c2, base, copy1, renamedelete1 |
|
855 | src, dsts1, m1, m2, mb, c2, base, copy1, renamedelete1 | |
| 854 | ) |
|
856 | ) | |
| 855 | elif dsts2: |
|
857 | elif dsts2: | |
| 856 | # copied/renamed only on side 2 |
|
858 | # copied/renamed only on side 2 | |
| 857 | _checksinglesidecopies( |
|
859 | _checksinglesidecopies( | |
| 858 | src, dsts2, m2, m1, mb, c1, base, copy2, renamedelete2 |
|
860 | src, dsts2, m2, m1, mb, c1, base, copy2, renamedelete2 | |
| 859 | ) |
|
861 | ) | |
| 860 |
|
862 | |||
| 861 | # find interesting file sets from manifests |
|
863 | # find interesting file sets from manifests | |
| 862 | addedinm1 = m1.filesnotin(mb, repo.narrowmatch()) |
|
864 | addedinm1 = m1.filesnotin(mb, repo.narrowmatch()) | |
| 863 | addedinm2 = m2.filesnotin(mb, repo.narrowmatch()) |
|
865 | addedinm2 = m2.filesnotin(mb, repo.narrowmatch()) | |
| 864 | u1 = sorted(addedinm1 - addedinm2) |
|
866 | u1 = sorted(addedinm1 - addedinm2) | |
| 865 | u2 = sorted(addedinm2 - addedinm1) |
|
867 | u2 = sorted(addedinm2 - addedinm1) | |
| 866 |
|
868 | |||
| 867 | header = b" unmatched files in %s" |
|
869 | header = b" unmatched files in %s" | |
| 868 | if u1: |
|
870 | if u1: | |
| 869 | repo.ui.debug(b"%s:\n %s\n" % (header % b'local', b"\n ".join(u1))) |
|
871 | repo.ui.debug(b"%s:\n %s\n" % (header % b'local', b"\n ".join(u1))) | |
| 870 | if u2: |
|
872 | if u2: | |
| 871 | repo.ui.debug(b"%s:\n %s\n" % (header % b'other', b"\n ".join(u2))) |
|
873 | repo.ui.debug(b"%s:\n %s\n" % (header % b'other', b"\n ".join(u2))) | |
| 872 |
|
874 | |||
| 873 | if repo.ui.debugflag: |
|
875 | if repo.ui.debugflag: | |
| 874 | renamedeleteset = set() |
|
876 | renamedeleteset = set() | |
| 875 | divergeset = set() |
|
877 | divergeset = set() | |
| 876 | for dsts in diverge.values(): |
|
878 | for dsts in diverge.values(): | |
| 877 | divergeset.update(dsts) |
|
879 | divergeset.update(dsts) | |
| 878 | for dsts in renamedelete1.values(): |
|
880 | for dsts in renamedelete1.values(): | |
| 879 | renamedeleteset.update(dsts) |
|
881 | renamedeleteset.update(dsts) | |
| 880 | for dsts in renamedelete2.values(): |
|
882 | for dsts in renamedelete2.values(): | |
| 881 | renamedeleteset.update(dsts) |
|
883 | renamedeleteset.update(dsts) | |
| 882 |
|
884 | |||
| 883 | repo.ui.debug( |
|
885 | repo.ui.debug( | |
| 884 | b" all copies found (* = to merge, ! = divergent, " |
|
886 | b" all copies found (* = to merge, ! = divergent, " | |
| 885 | b"% = renamed and deleted):\n" |
|
887 | b"% = renamed and deleted):\n" | |
| 886 | ) |
|
888 | ) | |
| 887 | for side, copies in ((b"local", copies1), (b"remote", copies2)): |
|
889 | for side, copies in ((b"local", copies1), (b"remote", copies2)): | |
| 888 | if not copies: |
|
890 | if not copies: | |
| 889 | continue |
|
891 | continue | |
| 890 | repo.ui.debug(b" on %s side:\n" % side) |
|
892 | repo.ui.debug(b" on %s side:\n" % side) | |
| 891 | for f in sorted(copies): |
|
893 | for f in sorted(copies): | |
| 892 | note = b"" |
|
894 | note = b"" | |
| 893 | if f in copy1 or f in copy2: |
|
895 | if f in copy1 or f in copy2: | |
| 894 | note += b"*" |
|
896 | note += b"*" | |
| 895 | if f in divergeset: |
|
897 | if f in divergeset: | |
| 896 | note += b"!" |
|
898 | note += b"!" | |
| 897 | if f in renamedeleteset: |
|
899 | if f in renamedeleteset: | |
| 898 | note += b"%" |
|
900 | note += b"%" | |
| 899 | repo.ui.debug( |
|
901 | repo.ui.debug( | |
| 900 | b" src: '%s' -> dst: '%s' %s\n" % (copies[f], f, note) |
|
902 | b" src: '%s' -> dst: '%s' %s\n" % (copies[f], f, note) | |
| 901 | ) |
|
903 | ) | |
| 902 | del renamedeleteset |
|
904 | del renamedeleteset | |
| 903 | del divergeset |
|
905 | del divergeset | |
| 904 |
|
906 | |||
| 905 | repo.ui.debug(b" checking for directory renames\n") |
|
907 | repo.ui.debug(b" checking for directory renames\n") | |
| 906 |
|
908 | |||
| 907 | dirmove1, movewithdir2 = _dir_renames(repo, c1, copy1, copies1, u2) |
|
909 | dirmove1, movewithdir2 = _dir_renames(repo, c1, copy1, copies1, u2) | |
| 908 | dirmove2, movewithdir1 = _dir_renames(repo, c2, copy2, copies2, u1) |
|
910 | dirmove2, movewithdir1 = _dir_renames(repo, c2, copy2, copies2, u1) | |
| 909 |
|
911 | |||
| 910 | branch_copies1 = branch_copies(copy1, renamedelete1, dirmove1, movewithdir1) |
|
912 | branch_copies1 = branch_copies(copy1, renamedelete1, dirmove1, movewithdir1) | |
| 911 | branch_copies2 = branch_copies(copy2, renamedelete2, dirmove2, movewithdir2) |
|
913 | branch_copies2 = branch_copies(copy2, renamedelete2, dirmove2, movewithdir2) | |
| 912 |
|
914 | |||
| 913 | return branch_copies1, branch_copies2, diverge |
|
915 | return branch_copies1, branch_copies2, diverge | |
| 914 |
|
916 | |||
| 915 |
|
917 | |||
| 916 | def _dir_renames(repo, ctx, copy, fullcopy, addedfiles): |
|
918 | def _dir_renames(repo, ctx, copy, fullcopy, addedfiles): | |
| 917 | """Finds moved directories and files that should move with them. |
|
919 | """Finds moved directories and files that should move with them. | |
| 918 |
|
920 | |||
| 919 | ctx: the context for one of the sides |
|
921 | ctx: the context for one of the sides | |
| 920 | copy: files copied on the same side (as ctx) |
|
922 | copy: files copied on the same side (as ctx) | |
| 921 | fullcopy: files copied on the same side (as ctx), including those that |
|
923 | fullcopy: files copied on the same side (as ctx), including those that | |
| 922 | merge.manifestmerge() won't care about |
|
924 | merge.manifestmerge() won't care about | |
| 923 | addedfiles: added files on the other side (compared to ctx) |
|
925 | addedfiles: added files on the other side (compared to ctx) | |
| 924 | """ |
|
926 | """ | |
| 925 | # generate a directory move map |
|
927 | # generate a directory move map | |
| 926 | d = ctx.dirs() |
|
928 | d = ctx.dirs() | |
| 927 | invalid = set() |
|
929 | invalid = set() | |
| 928 | dirmove = {} |
|
930 | dirmove = {} | |
| 929 |
|
931 | |||
| 930 | # examine each file copy for a potential directory move, which is |
|
932 | # examine each file copy for a potential directory move, which is | |
| 931 | # when all the files in a directory are moved to a new directory |
|
933 | # when all the files in a directory are moved to a new directory | |
| 932 | for dst, src in pycompat.iteritems(fullcopy): |
|
934 | for dst, src in pycompat.iteritems(fullcopy): | |
| 933 | dsrc, ddst = pathutil.dirname(src), pathutil.dirname(dst) |
|
935 | dsrc, ddst = pathutil.dirname(src), pathutil.dirname(dst) | |
| 934 | if dsrc in invalid: |
|
936 | if dsrc in invalid: | |
| 935 | # already seen to be uninteresting |
|
937 | # already seen to be uninteresting | |
| 936 | continue |
|
938 | continue | |
| 937 | elif dsrc in d and ddst in d: |
|
939 | elif dsrc in d and ddst in d: | |
| 938 | # directory wasn't entirely moved locally |
|
940 | # directory wasn't entirely moved locally | |
| 939 | invalid.add(dsrc) |
|
941 | invalid.add(dsrc) | |
| 940 | elif dsrc in dirmove and dirmove[dsrc] != ddst: |
|
942 | elif dsrc in dirmove and dirmove[dsrc] != ddst: | |
| 941 | # files from the same directory moved to two different places |
|
943 | # files from the same directory moved to two different places | |
| 942 | invalid.add(dsrc) |
|
944 | invalid.add(dsrc) | |
| 943 | else: |
|
945 | else: | |
| 944 | # looks good so far |
|
946 | # looks good so far | |
| 945 | dirmove[dsrc] = ddst |
|
947 | dirmove[dsrc] = ddst | |
| 946 |
|
948 | |||
| 947 | for i in invalid: |
|
949 | for i in invalid: | |
| 948 | if i in dirmove: |
|
950 | if i in dirmove: | |
| 949 | del dirmove[i] |
|
951 | del dirmove[i] | |
| 950 | del d, invalid |
|
952 | del d, invalid | |
| 951 |
|
953 | |||
| 952 | if not dirmove: |
|
954 | if not dirmove: | |
| 953 | return {}, {} |
|
955 | return {}, {} | |
| 954 |
|
956 | |||
| 955 | dirmove = {k + b"/": v + b"/" for k, v in pycompat.iteritems(dirmove)} |
|
957 | dirmove = {k + b"/": v + b"/" for k, v in pycompat.iteritems(dirmove)} | |
| 956 |
|
958 | |||
| 957 | for d in dirmove: |
|
959 | for d in dirmove: | |
| 958 | repo.ui.debug( |
|
960 | repo.ui.debug( | |
| 959 | b" discovered dir src: '%s' -> dst: '%s'\n" % (d, dirmove[d]) |
|
961 | b" discovered dir src: '%s' -> dst: '%s'\n" % (d, dirmove[d]) | |
| 960 | ) |
|
962 | ) | |
| 961 |
|
963 | |||
| 962 | movewithdir = {} |
|
964 | movewithdir = {} | |
| 963 | # check unaccounted nonoverlapping files against directory moves |
|
965 | # check unaccounted nonoverlapping files against directory moves | |
| 964 | for f in addedfiles: |
|
966 | for f in addedfiles: | |
| 965 | if f not in fullcopy: |
|
967 | if f not in fullcopy: | |
| 966 | for d in dirmove: |
|
968 | for d in dirmove: | |
| 967 | if f.startswith(d): |
|
969 | if f.startswith(d): | |
| 968 | # new file added in a directory that was moved, move it |
|
970 | # new file added in a directory that was moved, move it | |
| 969 | df = dirmove[d] + f[len(d) :] |
|
971 | df = dirmove[d] + f[len(d) :] | |
| 970 | if df not in copy: |
|
972 | if df not in copy: | |
| 971 | movewithdir[f] = df |
|
973 | movewithdir[f] = df | |
| 972 | repo.ui.debug( |
|
974 | repo.ui.debug( | |
| 973 | b" pending file src: '%s' -> dst: '%s'\n" |
|
975 | b" pending file src: '%s' -> dst: '%s'\n" | |
| 974 | % (f, df) |
|
976 | % (f, df) | |
| 975 | ) |
|
977 | ) | |
| 976 | break |
|
978 | break | |
| 977 |
|
979 | |||
| 978 | return dirmove, movewithdir |
|
980 | return dirmove, movewithdir | |
| 979 |
|
981 | |||
| 980 |
|
982 | |||
| 981 | def _heuristicscopytracing(repo, c1, c2, base): |
|
983 | def _heuristicscopytracing(repo, c1, c2, base): | |
| 982 | """Fast copytracing using filename heuristics |
|
984 | """Fast copytracing using filename heuristics | |
| 983 |
|
985 | |||
| 984 | Assumes that moves or renames are of following two types: |
|
986 | Assumes that moves or renames are of following two types: | |
| 985 |
|
987 | |||
| 986 | 1) Inside a directory only (same directory name but different filenames) |
|
988 | 1) Inside a directory only (same directory name but different filenames) | |
| 987 | 2) Move from one directory to another |
|
989 | 2) Move from one directory to another | |
| 988 | (same filenames but different directory names) |
|
990 | (same filenames but different directory names) | |
| 989 |
|
991 | |||
| 990 | Works only when there are no merge commits in the "source branch". |
|
992 | Works only when there are no merge commits in the "source branch". | |
| 991 | Source branch is commits from base up to c2 not including base. |
|
993 | Source branch is commits from base up to c2 not including base. | |
| 992 |
|
994 | |||
| 993 | If merge is involved it fallbacks to _fullcopytracing(). |
|
995 | If merge is involved it fallbacks to _fullcopytracing(). | |
| 994 |
|
996 | |||
| 995 | Can be used by setting the following config: |
|
997 | Can be used by setting the following config: | |
| 996 |
|
998 | |||
| 997 | [experimental] |
|
999 | [experimental] | |
| 998 | copytrace = heuristics |
|
1000 | copytrace = heuristics | |
| 999 |
|
1001 | |||
| 1000 | In some cases the copy/move candidates found by heuristics can be very large |
|
1002 | In some cases the copy/move candidates found by heuristics can be very large | |
| 1001 | in number and that will make the algorithm slow. The number of possible |
|
1003 | in number and that will make the algorithm slow. The number of possible | |
| 1002 | candidates to check can be limited by using the config |
|
1004 | candidates to check can be limited by using the config | |
| 1003 | `experimental.copytrace.movecandidateslimit` which defaults to 100. |
|
1005 | `experimental.copytrace.movecandidateslimit` which defaults to 100. | |
| 1004 | """ |
|
1006 | """ | |
| 1005 |
|
1007 | |||
| 1006 | if c1.rev() is None: |
|
1008 | if c1.rev() is None: | |
| 1007 | c1 = c1.p1() |
|
1009 | c1 = c1.p1() | |
| 1008 | if c2.rev() is None: |
|
1010 | if c2.rev() is None: | |
| 1009 | c2 = c2.p1() |
|
1011 | c2 = c2.p1() | |
| 1010 |
|
1012 | |||
| 1011 | changedfiles = set() |
|
1013 | changedfiles = set() | |
| 1012 | m1 = c1.manifest() |
|
1014 | m1 = c1.manifest() | |
| 1013 | if not repo.revs(b'%d::%d', base.rev(), c2.rev()): |
|
1015 | if not repo.revs(b'%d::%d', base.rev(), c2.rev()): | |
| 1014 | # If base is not in c2 branch, we switch to fullcopytracing |
|
1016 | # If base is not in c2 branch, we switch to fullcopytracing | |
| 1015 | repo.ui.debug( |
|
1017 | repo.ui.debug( | |
| 1016 | b"switching to full copytracing as base is not " |
|
1018 | b"switching to full copytracing as base is not " | |
| 1017 | b"an ancestor of c2\n" |
|
1019 | b"an ancestor of c2\n" | |
| 1018 | ) |
|
1020 | ) | |
| 1019 | return _fullcopytracing(repo, c1, c2, base) |
|
1021 | return _fullcopytracing(repo, c1, c2, base) | |
| 1020 |
|
1022 | |||
| 1021 | ctx = c2 |
|
1023 | ctx = c2 | |
| 1022 | while ctx != base: |
|
1024 | while ctx != base: | |
| 1023 | if len(ctx.parents()) == 2: |
|
1025 | if len(ctx.parents()) == 2: | |
| 1024 | # To keep things simple let's not handle merges |
|
1026 | # To keep things simple let's not handle merges | |
| 1025 | repo.ui.debug(b"switching to full copytracing because of merges\n") |
|
1027 | repo.ui.debug(b"switching to full copytracing because of merges\n") | |
| 1026 | return _fullcopytracing(repo, c1, c2, base) |
|
1028 | return _fullcopytracing(repo, c1, c2, base) | |
| 1027 | changedfiles.update(ctx.files()) |
|
1029 | changedfiles.update(ctx.files()) | |
| 1028 | ctx = ctx.p1() |
|
1030 | ctx = ctx.p1() | |
| 1029 |
|
1031 | |||
| 1030 | copies2 = {} |
|
1032 | copies2 = {} | |
| 1031 | cp = _forwardcopies(base, c2) |
|
1033 | cp = _forwardcopies(base, c2) | |
| 1032 | for dst, src in pycompat.iteritems(cp): |
|
1034 | for dst, src in pycompat.iteritems(cp): | |
| 1033 | if src in m1: |
|
1035 | if src in m1: | |
| 1034 | copies2[dst] = src |
|
1036 | copies2[dst] = src | |
| 1035 |
|
1037 | |||
| 1036 | # file is missing if it isn't present in the destination, but is present in |
|
1038 | # file is missing if it isn't present in the destination, but is present in | |
| 1037 | # the base and present in the source. |
|
1039 | # the base and present in the source. | |
| 1038 | # Presence in the base is important to exclude added files, presence in the |
|
1040 | # Presence in the base is important to exclude added files, presence in the | |
| 1039 | # source is important to exclude removed files. |
|
1041 | # source is important to exclude removed files. | |
| 1040 | filt = lambda f: f not in m1 and f in base and f in c2 |
|
1042 | filt = lambda f: f not in m1 and f in base and f in c2 | |
| 1041 | missingfiles = [f for f in changedfiles if filt(f)] |
|
1043 | missingfiles = [f for f in changedfiles if filt(f)] | |
| 1042 |
|
1044 | |||
| 1043 | copies1 = {} |
|
1045 | copies1 = {} | |
| 1044 | if missingfiles: |
|
1046 | if missingfiles: | |
| 1045 | basenametofilename = collections.defaultdict(list) |
|
1047 | basenametofilename = collections.defaultdict(list) | |
| 1046 | dirnametofilename = collections.defaultdict(list) |
|
1048 | dirnametofilename = collections.defaultdict(list) | |
| 1047 |
|
1049 | |||
| 1048 | for f in m1.filesnotin(base.manifest()): |
|
1050 | for f in m1.filesnotin(base.manifest()): | |
| 1049 | basename = os.path.basename(f) |
|
1051 | basename = os.path.basename(f) | |
| 1050 | dirname = os.path.dirname(f) |
|
1052 | dirname = os.path.dirname(f) | |
| 1051 | basenametofilename[basename].append(f) |
|
1053 | basenametofilename[basename].append(f) | |
| 1052 | dirnametofilename[dirname].append(f) |
|
1054 | dirnametofilename[dirname].append(f) | |
| 1053 |
|
1055 | |||
| 1054 | for f in missingfiles: |
|
1056 | for f in missingfiles: | |
| 1055 | basename = os.path.basename(f) |
|
1057 | basename = os.path.basename(f) | |
| 1056 | dirname = os.path.dirname(f) |
|
1058 | dirname = os.path.dirname(f) | |
| 1057 | samebasename = basenametofilename[basename] |
|
1059 | samebasename = basenametofilename[basename] | |
| 1058 | samedirname = dirnametofilename[dirname] |
|
1060 | samedirname = dirnametofilename[dirname] | |
| 1059 | movecandidates = samebasename + samedirname |
|
1061 | movecandidates = samebasename + samedirname | |
| 1060 | # f is guaranteed to be present in c2, that's why |
|
1062 | # f is guaranteed to be present in c2, that's why | |
| 1061 | # c2.filectx(f) won't fail |
|
1063 | # c2.filectx(f) won't fail | |
| 1062 | f2 = c2.filectx(f) |
|
1064 | f2 = c2.filectx(f) | |
| 1063 | # we can have a lot of candidates which can slow down the heuristics |
|
1065 | # we can have a lot of candidates which can slow down the heuristics | |
| 1064 | # config value to limit the number of candidates moves to check |
|
1066 | # config value to limit the number of candidates moves to check | |
| 1065 | maxcandidates = repo.ui.configint( |
|
1067 | maxcandidates = repo.ui.configint( | |
| 1066 | b'experimental', b'copytrace.movecandidateslimit' |
|
1068 | b'experimental', b'copytrace.movecandidateslimit' | |
| 1067 | ) |
|
1069 | ) | |
| 1068 |
|
1070 | |||
| 1069 | if len(movecandidates) > maxcandidates: |
|
1071 | if len(movecandidates) > maxcandidates: | |
| 1070 | repo.ui.status( |
|
1072 | repo.ui.status( | |
| 1071 | _( |
|
1073 | _( | |
| 1072 | b"skipping copytracing for '%s', more " |
|
1074 | b"skipping copytracing for '%s', more " | |
| 1073 | b"candidates than the limit: %d\n" |
|
1075 | b"candidates than the limit: %d\n" | |
| 1074 | ) |
|
1076 | ) | |
| 1075 | % (f, len(movecandidates)) |
|
1077 | % (f, len(movecandidates)) | |
| 1076 | ) |
|
1078 | ) | |
| 1077 | continue |
|
1079 | continue | |
| 1078 |
|
1080 | |||
| 1079 | for candidate in movecandidates: |
|
1081 | for candidate in movecandidates: | |
| 1080 | f1 = c1.filectx(candidate) |
|
1082 | f1 = c1.filectx(candidate) | |
| 1081 | if _related(f1, f2): |
|
1083 | if _related(f1, f2): | |
| 1082 | # if there are a few related copies then we'll merge |
|
1084 | # if there are a few related copies then we'll merge | |
| 1083 | # changes into all of them. This matches the behaviour |
|
1085 | # changes into all of them. This matches the behaviour | |
| 1084 | # of upstream copytracing |
|
1086 | # of upstream copytracing | |
| 1085 | copies1[candidate] = f |
|
1087 | copies1[candidate] = f | |
| 1086 |
|
1088 | |||
| 1087 | return branch_copies(copies1), branch_copies(copies2), {} |
|
1089 | return branch_copies(copies1), branch_copies(copies2), {} | |
| 1088 |
|
1090 | |||
| 1089 |
|
1091 | |||
| 1090 | def _related(f1, f2): |
|
1092 | def _related(f1, f2): | |
| 1091 | """return True if f1 and f2 filectx have a common ancestor |
|
1093 | """return True if f1 and f2 filectx have a common ancestor | |
| 1092 |
|
1094 | |||
| 1093 | Walk back to common ancestor to see if the two files originate |
|
1095 | Walk back to common ancestor to see if the two files originate | |
| 1094 | from the same file. Since workingfilectx's rev() is None it messes |
|
1096 | from the same file. Since workingfilectx's rev() is None it messes | |
| 1095 | up the integer comparison logic, hence the pre-step check for |
|
1097 | up the integer comparison logic, hence the pre-step check for | |
| 1096 | None (f1 and f2 can only be workingfilectx's initially). |
|
1098 | None (f1 and f2 can only be workingfilectx's initially). | |
| 1097 | """ |
|
1099 | """ | |
| 1098 |
|
1100 | |||
| 1099 | if f1 == f2: |
|
1101 | if f1 == f2: | |
| 1100 | return True # a match |
|
1102 | return True # a match | |
| 1101 |
|
1103 | |||
| 1102 | g1, g2 = f1.ancestors(), f2.ancestors() |
|
1104 | g1, g2 = f1.ancestors(), f2.ancestors() | |
| 1103 | try: |
|
1105 | try: | |
| 1104 | f1r, f2r = f1.linkrev(), f2.linkrev() |
|
1106 | f1r, f2r = f1.linkrev(), f2.linkrev() | |
| 1105 |
|
1107 | |||
| 1106 | if f1r is None: |
|
1108 | if f1r is None: | |
| 1107 | f1 = next(g1) |
|
1109 | f1 = next(g1) | |
| 1108 | if f2r is None: |
|
1110 | if f2r is None: | |
| 1109 | f2 = next(g2) |
|
1111 | f2 = next(g2) | |
| 1110 |
|
1112 | |||
| 1111 | while True: |
|
1113 | while True: | |
| 1112 | f1r, f2r = f1.linkrev(), f2.linkrev() |
|
1114 | f1r, f2r = f1.linkrev(), f2.linkrev() | |
| 1113 | if f1r > f2r: |
|
1115 | if f1r > f2r: | |
| 1114 | f1 = next(g1) |
|
1116 | f1 = next(g1) | |
| 1115 | elif f2r > f1r: |
|
1117 | elif f2r > f1r: | |
| 1116 | f2 = next(g2) |
|
1118 | f2 = next(g2) | |
| 1117 | else: # f1 and f2 point to files in the same linkrev |
|
1119 | else: # f1 and f2 point to files in the same linkrev | |
| 1118 | return f1 == f2 # true if they point to the same file |
|
1120 | return f1 == f2 # true if they point to the same file | |
| 1119 | except StopIteration: |
|
1121 | except StopIteration: | |
| 1120 | return False |
|
1122 | return False | |
| 1121 |
|
1123 | |||
| 1122 |
|
1124 | |||
| 1123 | def graftcopies(wctx, ctx, base): |
|
1125 | def graftcopies(wctx, ctx, base): | |
| 1124 | """reproduce copies between base and ctx in the wctx |
|
1126 | """reproduce copies between base and ctx in the wctx | |
| 1125 |
|
1127 | |||
| 1126 | Unlike mergecopies(), this function will only consider copies between base |
|
1128 | Unlike mergecopies(), this function will only consider copies between base | |
| 1127 | and ctx; it will ignore copies between base and wctx. Also unlike |
|
1129 | and ctx; it will ignore copies between base and wctx. Also unlike | |
| 1128 | mergecopies(), this function will apply copies to the working copy (instead |
|
1130 | mergecopies(), this function will apply copies to the working copy (instead | |
| 1129 | of just returning information about the copies). That makes it cheaper |
|
1131 | of just returning information about the copies). That makes it cheaper | |
| 1130 | (especially in the common case of base==ctx.p1()) and useful also when |
|
1132 | (especially in the common case of base==ctx.p1()) and useful also when | |
| 1131 | experimental.copytrace=off. |
|
1133 | experimental.copytrace=off. | |
| 1132 |
|
1134 | |||
| 1133 | merge.update() will have already marked most copies, but it will only |
|
1135 | merge.update() will have already marked most copies, but it will only | |
| 1134 | mark copies if it thinks the source files are related (see |
|
1136 | mark copies if it thinks the source files are related (see | |
| 1135 | merge._related()). It will also not mark copies if the file wasn't modified |
|
1137 | merge._related()). It will also not mark copies if the file wasn't modified | |
| 1136 | on the local side. This function adds the copies that were "missed" |
|
1138 | on the local side. This function adds the copies that were "missed" | |
| 1137 | by merge.update(). |
|
1139 | by merge.update(). | |
| 1138 | """ |
|
1140 | """ | |
| 1139 | new_copies = pathcopies(base, ctx) |
|
1141 | new_copies = pathcopies(base, ctx) | |
| 1140 | _filter(wctx.p1(), wctx, new_copies) |
|
1142 | _filter(wctx.p1(), wctx, new_copies) | |
| 1141 | for dst, src in pycompat.iteritems(new_copies): |
|
1143 | for dst, src in pycompat.iteritems(new_copies): | |
| 1142 | wctx[dst].markcopied(src) |
|
1144 | wctx[dst].markcopied(src) | |
| @@ -1,316 +1,354 | |||||
| 1 | use crate::utils::hg_path::HgPathBuf; |
|
1 | use crate::utils::hg_path::HgPathBuf; | |
| 2 | use crate::Revision; |
|
2 | use crate::Revision; | |
| 3 |
|
3 | |||
| 4 | use im_rc::ordmap::DiffItem; |
|
4 | use im_rc::ordmap::DiffItem; | |
| 5 | use im_rc::ordmap::OrdMap; |
|
5 | use im_rc::ordmap::OrdMap; | |
| 6 |
|
6 | |||
| 7 | use std::collections::HashMap; |
|
7 | use std::collections::HashMap; | |
| 8 | use std::collections::HashSet; |
|
8 | use std::collections::HashSet; | |
| 9 |
|
9 | |||
| 10 | pub type PathCopies = HashMap<HgPathBuf, HgPathBuf>; |
|
10 | pub type PathCopies = HashMap<HgPathBuf, HgPathBuf>; | |
| 11 |
|
11 | |||
| 12 | #[derive(Clone, Debug, PartialEq)] |
|
12 | #[derive(Clone, Debug, PartialEq)] | |
| 13 | struct TimeStampedPathCopy { |
|
13 | struct TimeStampedPathCopy { | |
| 14 | /// revision at which the copy information was added |
|
14 | /// revision at which the copy information was added | |
| 15 | rev: Revision, |
|
15 | rev: Revision, | |
| 16 | /// the copy source, (Set to None in case of deletion of the associated |
|
16 | /// the copy source, (Set to None in case of deletion of the associated | |
| 17 | /// key) |
|
17 | /// key) | |
| 18 | path: Option<HgPathBuf>, |
|
18 | path: Option<HgPathBuf>, | |
| 19 | } |
|
19 | } | |
| 20 |
|
20 | |||
| 21 | /// maps CopyDestination to Copy Source (+ a "timestamp" for the operation) |
|
21 | /// maps CopyDestination to Copy Source (+ a "timestamp" for the operation) | |
| 22 | type TimeStampedPathCopies = OrdMap<HgPathBuf, TimeStampedPathCopy>; |
|
22 | type TimeStampedPathCopies = OrdMap<HgPathBuf, TimeStampedPathCopy>; | |
| 23 |
|
23 | |||
| 24 | /// hold parent 1, parent 2 and relevant files actions. |
|
24 | /// hold parent 1, parent 2 and relevant files actions. | |
| 25 | pub type RevInfo = (Revision, Revision, ChangedFiles); |
|
25 | pub type RevInfo = (Revision, Revision, ChangedFiles); | |
| 26 |
|
26 | |||
| 27 | /// represent the files affected by a changesets |
|
27 | /// represent the files affected by a changesets | |
| 28 | /// |
|
28 | /// | |
| 29 | /// This hold a subset of mercurial.metadata.ChangingFiles as we do not need |
|
29 | /// This hold a subset of mercurial.metadata.ChangingFiles as we do not need | |
| 30 | /// all the data categories tracked by it. |
|
30 | /// all the data categories tracked by it. | |
| 31 | pub struct ChangedFiles { |
|
31 | pub struct ChangedFiles { | |
| 32 | removed: HashSet<HgPathBuf>, |
|
32 | removed: HashSet<HgPathBuf>, | |
| 33 | merged: HashSet<HgPathBuf>, |
|
33 | merged: HashSet<HgPathBuf>, | |
| 34 | salvaged: HashSet<HgPathBuf>, |
|
34 | salvaged: HashSet<HgPathBuf>, | |
| 35 | copied_from_p1: PathCopies, |
|
35 | copied_from_p1: PathCopies, | |
| 36 | copied_from_p2: PathCopies, |
|
36 | copied_from_p2: PathCopies, | |
| 37 | } |
|
37 | } | |
| 38 |
|
38 | |||
| 39 | impl ChangedFiles { |
|
39 | impl ChangedFiles { | |
| 40 | pub fn new( |
|
40 | pub fn new( | |
| 41 | removed: HashSet<HgPathBuf>, |
|
41 | removed: HashSet<HgPathBuf>, | |
| 42 | merged: HashSet<HgPathBuf>, |
|
42 | merged: HashSet<HgPathBuf>, | |
| 43 | salvaged: HashSet<HgPathBuf>, |
|
43 | salvaged: HashSet<HgPathBuf>, | |
| 44 | copied_from_p1: PathCopies, |
|
44 | copied_from_p1: PathCopies, | |
| 45 | copied_from_p2: PathCopies, |
|
45 | copied_from_p2: PathCopies, | |
| 46 | ) -> Self { |
|
46 | ) -> Self { | |
| 47 | ChangedFiles { |
|
47 | ChangedFiles { | |
| 48 | removed, |
|
48 | removed, | |
| 49 | merged, |
|
49 | merged, | |
| 50 | salvaged, |
|
50 | salvaged, | |
| 51 | copied_from_p1, |
|
51 | copied_from_p1, | |
| 52 | copied_from_p2, |
|
52 | copied_from_p2, | |
| 53 | } |
|
53 | } | |
| 54 | } |
|
54 | } | |
| 55 |
|
55 | |||
| 56 | pub fn new_empty() -> Self { |
|
56 | pub fn new_empty() -> Self { | |
| 57 | ChangedFiles { |
|
57 | ChangedFiles { | |
| 58 | removed: HashSet::new(), |
|
58 | removed: HashSet::new(), | |
| 59 | merged: HashSet::new(), |
|
59 | merged: HashSet::new(), | |
| 60 | salvaged: HashSet::new(), |
|
60 | salvaged: HashSet::new(), | |
| 61 | copied_from_p1: PathCopies::new(), |
|
61 | copied_from_p1: PathCopies::new(), | |
| 62 | copied_from_p2: PathCopies::new(), |
|
62 | copied_from_p2: PathCopies::new(), | |
| 63 | } |
|
63 | } | |
| 64 | } |
|
64 | } | |
| 65 | } |
|
65 | } | |
| 66 |
|
66 | |||
|
|
67 | /// A struct responsible for answering "is X ancestors of Y" quickly | |||
|
|
68 | /// | |||
|
|
69 | /// The structure will delegate ancestors call to a callback, and cache the | |||
|
|
70 | /// result. | |||
|
|
71 | #[derive(Debug)] | |||
|
|
72 | struct AncestorOracle<'a, A: Fn(Revision, Revision) -> bool> { | |||
|
|
73 | inner: &'a A, | |||
|
|
74 | pairs: HashMap<(Revision, Revision), bool>, | |||
|
|
75 | } | |||
|
|
76 | ||||
|
|
77 | impl<'a, A: Fn(Revision, Revision) -> bool> AncestorOracle<'a, A> { | |||
|
|
78 | fn new(func: &'a A) -> Self { | |||
|
|
79 | Self { | |||
|
|
80 | inner: func, | |||
|
|
81 | pairs: HashMap::default(), | |||
|
|
82 | } | |||
|
|
83 | } | |||
|
|
84 | ||||
|
|
85 | /// returns `true` if `anc` is an ancestors of `desc`, `false` otherwise | |||
|
|
86 | fn is_ancestor(&mut self, anc: Revision, desc: Revision) -> bool { | |||
|
|
87 | if anc > desc { | |||
|
|
88 | false | |||
|
|
89 | } else if anc == desc { | |||
|
|
90 | true | |||
|
|
91 | } else { | |||
|
|
92 | if let Some(b) = self.pairs.get(&(anc, desc)) { | |||
|
|
93 | *b | |||
|
|
94 | } else { | |||
|
|
95 | let b = (self.inner)(anc, desc); | |||
|
|
96 | self.pairs.insert((anc, desc), b); | |||
|
|
97 | b | |||
|
|
98 | } | |||
|
|
99 | } | |||
|
|
100 | } | |||
|
|
101 | } | |||
|
|
102 | ||||
| 67 | /// Same as mercurial.copies._combine_changeset_copies, but in Rust. |
|
103 | /// Same as mercurial.copies._combine_changeset_copies, but in Rust. | |
| 68 | /// |
|
104 | /// | |
| 69 | /// Arguments are: |
|
105 | /// Arguments are: | |
| 70 | /// |
|
106 | /// | |
| 71 | /// revs: all revisions to be considered |
|
107 | /// revs: all revisions to be considered | |
| 72 | /// children: a {parent ? [childrens]} mapping |
|
108 | /// children: a {parent ? [childrens]} mapping | |
| 73 | /// target_rev: the final revision we are combining copies to |
|
109 | /// target_rev: the final revision we are combining copies to | |
| 74 | /// rev_info(rev): callback to get revision information: |
|
110 | /// rev_info(rev): callback to get revision information: | |
| 75 | /// * first parent |
|
111 | /// * first parent | |
| 76 | /// * second parent |
|
112 | /// * second parent | |
| 77 | /// * ChangedFiles |
|
113 | /// * ChangedFiles | |
| 78 | /// isancestors(low_rev, high_rev): callback to check if a revision is an |
|
114 | /// isancestors(low_rev, high_rev): callback to check if a revision is an | |
| 79 | /// ancestor of another |
|
115 | /// ancestor of another | |
| 80 | pub fn combine_changeset_copies( |
|
116 | pub fn combine_changeset_copies<A: Fn(Revision, Revision) -> bool>( | |
| 81 | revs: Vec<Revision>, |
|
117 | revs: Vec<Revision>, | |
| 82 | children: HashMap<Revision, Vec<Revision>>, |
|
118 | children: HashMap<Revision, Vec<Revision>>, | |
| 83 | target_rev: Revision, |
|
119 | target_rev: Revision, | |
| 84 | rev_info: &impl Fn(Revision) -> RevInfo, |
|
120 | rev_info: &impl Fn(Revision) -> RevInfo, | |
| 85 | is_ancestor: &impl Fn(Revision, Revision) -> bool, |
|
121 | is_ancestor: &A, | |
| 86 | ) -> PathCopies { |
|
122 | ) -> PathCopies { | |
| 87 | let mut all_copies = HashMap::new(); |
|
123 | let mut all_copies = HashMap::new(); | |
|
|
124 | let mut oracle = AncestorOracle::new(is_ancestor); | |||
| 88 |
|
125 | |||
| 89 | for rev in revs { |
|
126 | for rev in revs { | |
| 90 | // Retrieve data computed in a previous iteration |
|
127 | // Retrieve data computed in a previous iteration | |
| 91 | let copies = all_copies.remove(&rev); |
|
128 | let copies = all_copies.remove(&rev); | |
| 92 | let copies = match copies { |
|
129 | let copies = match copies { | |
| 93 | Some(c) => c, |
|
130 | Some(c) => c, | |
| 94 | None => TimeStampedPathCopies::default(), // root of the walked set |
|
131 | None => TimeStampedPathCopies::default(), // root of the walked set | |
| 95 | }; |
|
132 | }; | |
| 96 |
|
133 | |||
| 97 | let current_children = match children.get(&rev) { |
|
134 | let current_children = match children.get(&rev) { | |
| 98 | Some(c) => c, |
|
135 | Some(c) => c, | |
| 99 | None => panic!("inconsistent `revs` and `children`"), |
|
136 | None => panic!("inconsistent `revs` and `children`"), | |
| 100 | }; |
|
137 | }; | |
| 101 |
|
138 | |||
| 102 | for child in current_children { |
|
139 | for child in current_children { | |
| 103 | // We will chain the copies information accumulated for `rev` with |
|
140 | // We will chain the copies information accumulated for `rev` with | |
| 104 | // the individual copies information for each of its children. |
|
141 | // the individual copies information for each of its children. | |
| 105 | // Creating a new PathCopies for each `rev` ? `children` vertex. |
|
142 | // Creating a new PathCopies for each `rev` ? `children` vertex. | |
| 106 | let (p1, p2, changes) = rev_info(*child); |
|
143 | let (p1, p2, changes) = rev_info(*child); | |
| 107 |
|
144 | |||
| 108 | let (parent, child_copies) = if rev == p1 { |
|
145 | let (parent, child_copies) = if rev == p1 { | |
| 109 | (1, &changes.copied_from_p1) |
|
146 | (1, &changes.copied_from_p1) | |
| 110 | } else { |
|
147 | } else { | |
| 111 | assert_eq!(rev, p2); |
|
148 | assert_eq!(rev, p2); | |
| 112 | (2, &changes.copied_from_p2) |
|
149 | (2, &changes.copied_from_p2) | |
| 113 | }; |
|
150 | }; | |
| 114 | let mut new_copies = copies.clone(); |
|
151 | let mut new_copies = copies.clone(); | |
| 115 |
|
152 | |||
| 116 | for (dest, source) in child_copies { |
|
153 | for (dest, source) in child_copies { | |
| 117 | let entry; |
|
154 | let entry; | |
| 118 | if let Some(v) = copies.get(source) { |
|
155 | if let Some(v) = copies.get(source) { | |
| 119 | entry = match &v.path { |
|
156 | entry = match &v.path { | |
| 120 | Some(path) => Some((*(path)).to_owned()), |
|
157 | Some(path) => Some((*(path)).to_owned()), | |
| 121 | None => Some(source.to_owned()), |
|
158 | None => Some(source.to_owned()), | |
| 122 | } |
|
159 | } | |
| 123 | } else { |
|
160 | } else { | |
| 124 | entry = Some(source.to_owned()); |
|
161 | entry = Some(source.to_owned()); | |
| 125 | } |
|
162 | } | |
| 126 | // Each new entry is introduced by the children, we record this |
|
163 | // Each new entry is introduced by the children, we record this | |
| 127 | // information as we will need it to take the right decision |
|
164 | // information as we will need it to take the right decision | |
| 128 | // when merging conflicting copy information. See |
|
165 | // when merging conflicting copy information. See | |
| 129 | // merge_copies_dict for details. |
|
166 | // merge_copies_dict for details. | |
| 130 | let ttpc = TimeStampedPathCopy { |
|
167 | let ttpc = TimeStampedPathCopy { | |
| 131 | rev: *child, |
|
168 | rev: *child, | |
| 132 | path: entry, |
|
169 | path: entry, | |
| 133 | }; |
|
170 | }; | |
| 134 | new_copies.insert(dest.to_owned(), ttpc); |
|
171 | new_copies.insert(dest.to_owned(), ttpc); | |
| 135 | } |
|
172 | } | |
| 136 |
|
173 | |||
| 137 | // We must drop copy information for removed file. |
|
174 | // We must drop copy information for removed file. | |
| 138 | // |
|
175 | // | |
| 139 | // We need to explicitly record them as dropped to propagate this |
|
176 | // We need to explicitly record them as dropped to propagate this | |
| 140 | // information when merging two TimeStampedPathCopies object. |
|
177 | // information when merging two TimeStampedPathCopies object. | |
| 141 | for f in changes.removed.iter() { |
|
178 | for f in changes.removed.iter() { | |
| 142 | if new_copies.contains_key(f.as_ref()) { |
|
179 | if new_copies.contains_key(f.as_ref()) { | |
| 143 | let ttpc = TimeStampedPathCopy { |
|
180 | let ttpc = TimeStampedPathCopy { | |
| 144 | rev: *child, |
|
181 | rev: *child, | |
| 145 | path: None, |
|
182 | path: None, | |
| 146 | }; |
|
183 | }; | |
| 147 | new_copies.insert(f.to_owned(), ttpc); |
|
184 | new_copies.insert(f.to_owned(), ttpc); | |
| 148 | } |
|
185 | } | |
| 149 | } |
|
186 | } | |
| 150 |
|
187 | |||
| 151 | // Merge has two parents needs to combines their copy information. |
|
188 | // Merge has two parents needs to combines their copy information. | |
| 152 | // |
|
189 | // | |
| 153 | // If the vertex from the other parent was already processed, we |
|
190 | // If the vertex from the other parent was already processed, we | |
| 154 | // will have a value for the child ready to be used. We need to |
|
191 | // will have a value for the child ready to be used. We need to | |
| 155 | // grab it and combine it with the one we already |
|
192 | // grab it and combine it with the one we already | |
| 156 | // computed. If not we can simply store the newly |
|
193 | // computed. If not we can simply store the newly | |
| 157 | // computed data. The processing happening at |
|
194 | // computed data. The processing happening at | |
| 158 | // the time of the second parent will take care of combining the |
|
195 | // the time of the second parent will take care of combining the | |
| 159 | // two TimeStampedPathCopies instance. |
|
196 | // two TimeStampedPathCopies instance. | |
| 160 | match all_copies.remove(child) { |
|
197 | match all_copies.remove(child) { | |
| 161 | None => { |
|
198 | None => { | |
| 162 | all_copies.insert(child, new_copies); |
|
199 | all_copies.insert(child, new_copies); | |
| 163 | } |
|
200 | } | |
| 164 | Some(other_copies) => { |
|
201 | Some(other_copies) => { | |
| 165 | let (minor, major) = match parent { |
|
202 | let (minor, major) = match parent { | |
| 166 | 1 => (other_copies, new_copies), |
|
203 | 1 => (other_copies, new_copies), | |
| 167 | 2 => (new_copies, other_copies), |
|
204 | 2 => (new_copies, other_copies), | |
| 168 | _ => unreachable!(), |
|
205 | _ => unreachable!(), | |
| 169 | }; |
|
206 | }; | |
| 170 | let merged_copies = |
|
207 | let merged_copies = | |
| 171 |
merge_copies_dict(minor, major, &changes, |
|
208 | merge_copies_dict(minor, major, &changes, &mut oracle); | |
| 172 | all_copies.insert(child, merged_copies); |
|
209 | all_copies.insert(child, merged_copies); | |
| 173 | } |
|
210 | } | |
| 174 | }; |
|
211 | }; | |
| 175 | } |
|
212 | } | |
| 176 | } |
|
213 | } | |
| 177 |
|
214 | |||
| 178 | // Drop internal information (like the timestamp) and return the final |
|
215 | // Drop internal information (like the timestamp) and return the final | |
| 179 | // mapping. |
|
216 | // mapping. | |
| 180 | let tt_result = all_copies |
|
217 | let tt_result = all_copies | |
| 181 | .remove(&target_rev) |
|
218 | .remove(&target_rev) | |
| 182 | .expect("target revision was not processed"); |
|
219 | .expect("target revision was not processed"); | |
| 183 | let mut result = PathCopies::default(); |
|
220 | let mut result = PathCopies::default(); | |
| 184 | for (dest, tt_source) in tt_result { |
|
221 | for (dest, tt_source) in tt_result { | |
| 185 | if let Some(path) = tt_source.path { |
|
222 | if let Some(path) = tt_source.path { | |
| 186 | result.insert(dest, path); |
|
223 | result.insert(dest, path); | |
| 187 | } |
|
224 | } | |
| 188 | } |
|
225 | } | |
| 189 | result |
|
226 | result | |
| 190 | } |
|
227 | } | |
| 191 |
|
228 | |||
| 192 | /// merge two copies-mapping together, minor and major |
|
229 | /// merge two copies-mapping together, minor and major | |
| 193 | /// |
|
230 | /// | |
| 194 | /// In case of conflict, value from "major" will be picked, unless in some |
|
231 | /// In case of conflict, value from "major" will be picked, unless in some | |
| 195 | /// cases. See inline documentation for details. |
|
232 | /// cases. See inline documentation for details. | |
| 196 | #[allow(clippy::if_same_then_else)] |
|
233 | #[allow(clippy::if_same_then_else)] | |
| 197 | fn merge_copies_dict( |
|
234 | fn merge_copies_dict<A: Fn(Revision, Revision) -> bool>( | |
| 198 | minor: TimeStampedPathCopies, |
|
235 | minor: TimeStampedPathCopies, | |
| 199 | major: TimeStampedPathCopies, |
|
236 | major: TimeStampedPathCopies, | |
| 200 | changes: &ChangedFiles, |
|
237 | changes: &ChangedFiles, | |
| 201 | is_ancestor: &impl Fn(Revision, Revision) -> bool, |
|
238 | oracle: &mut AncestorOracle<A>, | |
| 202 | ) -> TimeStampedPathCopies { |
|
239 | ) -> TimeStampedPathCopies { | |
| 203 | if minor.is_empty() { |
|
240 | if minor.is_empty() { | |
| 204 | return major; |
|
241 | return major; | |
| 205 | } else if major.is_empty() { |
|
242 | } else if major.is_empty() { | |
| 206 | return minor; |
|
243 | return minor; | |
| 207 | } |
|
244 | } | |
| 208 | let mut override_minor = Vec::new(); |
|
245 | let mut override_minor = Vec::new(); | |
| 209 | let mut override_major = Vec::new(); |
|
246 | let mut override_major = Vec::new(); | |
| 210 |
|
247 | |||
| 211 | let mut to_major = |k: &HgPathBuf, v: &TimeStampedPathCopy| { |
|
248 | let mut to_major = |k: &HgPathBuf, v: &TimeStampedPathCopy| { | |
| 212 | override_major.push((k.clone(), v.clone())) |
|
249 | override_major.push((k.clone(), v.clone())) | |
| 213 | }; |
|
250 | }; | |
| 214 | let mut to_minor = |k: &HgPathBuf, v: &TimeStampedPathCopy| { |
|
251 | let mut to_minor = |k: &HgPathBuf, v: &TimeStampedPathCopy| { | |
| 215 | override_minor.push((k.clone(), v.clone())) |
|
252 | override_minor.push((k.clone(), v.clone())) | |
| 216 | }; |
|
253 | }; | |
| 217 |
|
254 | |||
| 218 | // The diff function leverage detection of the identical subpart if minor |
|
255 | // The diff function leverage detection of the identical subpart if minor | |
| 219 | // and major has some common ancestors. This make it very fast is most |
|
256 | // and major has some common ancestors. This make it very fast is most | |
| 220 | // case. |
|
257 | // case. | |
| 221 | // |
|
258 | // | |
| 222 | // In case where the two map are vastly different in size, the current |
|
259 | // In case where the two map are vastly different in size, the current | |
| 223 | // approach is still slowish because the iteration will iterate over |
|
260 | // approach is still slowish because the iteration will iterate over | |
| 224 | // all the "exclusive" content of the larger on. This situation can be |
|
261 | // all the "exclusive" content of the larger on. This situation can be | |
| 225 | // frequent when the subgraph of revision we are processing has a lot |
|
262 | // frequent when the subgraph of revision we are processing has a lot | |
| 226 | // of roots. Each roots adding they own fully new map to the mix (and |
|
263 | // of roots. Each roots adding they own fully new map to the mix (and | |
| 227 | // likely a small map, if the path from the root to the "main path" is |
|
264 | // likely a small map, if the path from the root to the "main path" is | |
| 228 | // small. |
|
265 | // small. | |
| 229 | // |
|
266 | // | |
| 230 | // We could do better by detecting such situation and processing them |
|
267 | // We could do better by detecting such situation and processing them | |
| 231 | // differently. |
|
268 | // differently. | |
| 232 | for d in minor.diff(&major) { |
|
269 | for d in minor.diff(&major) { | |
| 233 | match d { |
|
270 | match d { | |
| 234 | DiffItem::Add(k, v) => to_minor(k, v), |
|
271 | DiffItem::Add(k, v) => to_minor(k, v), | |
| 235 | DiffItem::Remove(k, v) => to_major(k, v), |
|
272 | DiffItem::Remove(k, v) => to_major(k, v), | |
| 236 | DiffItem::Update { old, new } => { |
|
273 | DiffItem::Update { old, new } => { | |
| 237 | let (dest, src_major) = new; |
|
274 | let (dest, src_major) = new; | |
| 238 | let (_, src_minor) = old; |
|
275 | let (_, src_minor) = old; | |
| 239 | let mut pick_minor = || (to_major(dest, src_minor)); |
|
276 | let mut pick_minor = || (to_major(dest, src_minor)); | |
| 240 | let mut pick_major = || (to_minor(dest, src_major)); |
|
277 | let mut pick_major = || (to_minor(dest, src_major)); | |
| 241 | if src_major.path == src_minor.path { |
|
278 | if src_major.path == src_minor.path { | |
| 242 | // we have the same value, but from other source; |
|
279 | // we have the same value, but from other source; | |
| 243 | if src_major.rev == src_minor.rev { |
|
280 | if src_major.rev == src_minor.rev { | |
| 244 | // If the two entry are identical, no need to do |
|
281 | // If the two entry are identical, no need to do | |
| 245 | // anything (but diff should not have yield them) |
|
282 | // anything (but diff should not have yield them) | |
| 246 | unreachable!(); |
|
283 | unreachable!(); | |
| 247 |
} else if is_ancestor(src_major.rev, src_minor.rev) |
|
284 | } else if oracle.is_ancestor(src_major.rev, src_minor.rev) | |
|
|
285 | { | |||
| 248 | pick_minor(); |
|
286 | pick_minor(); | |
| 249 | } else { |
|
287 | } else { | |
| 250 | pick_major(); |
|
288 | pick_major(); | |
| 251 | } |
|
289 | } | |
| 252 | } else if src_major.rev == src_minor.rev { |
|
290 | } else if src_major.rev == src_minor.rev { | |
| 253 | // We cannot get copy information for both p1 and p2 in the |
|
291 | // We cannot get copy information for both p1 and p2 in the | |
| 254 | // same rev. So this is the same value. |
|
292 | // same rev. So this is the same value. | |
| 255 | unreachable!(); |
|
293 | unreachable!(); | |
| 256 | } else if src_major.path.is_none() |
|
294 | } else if src_major.path.is_none() | |
| 257 | && changes.salvaged.contains(dest) |
|
295 | && changes.salvaged.contains(dest) | |
| 258 | { |
|
296 | { | |
| 259 | // If the file is "deleted" in the major side but was |
|
297 | // If the file is "deleted" in the major side but was | |
| 260 | // salvaged by the merge, we keep the minor side alive |
|
298 | // salvaged by the merge, we keep the minor side alive | |
| 261 | pick_minor(); |
|
299 | pick_minor(); | |
| 262 | } else if src_minor.path.is_none() |
|
300 | } else if src_minor.path.is_none() | |
| 263 | && changes.salvaged.contains(dest) |
|
301 | && changes.salvaged.contains(dest) | |
| 264 | { |
|
302 | { | |
| 265 | // If the file is "deleted" in the minor side but was |
|
303 | // If the file is "deleted" in the minor side but was | |
| 266 | // salvaged by the merge, unconditionnaly preserve the |
|
304 | // salvaged by the merge, unconditionnaly preserve the | |
| 267 | // major side. |
|
305 | // major side. | |
| 268 | pick_major(); |
|
306 | pick_major(); | |
| 269 | } else if changes.merged.contains(dest) { |
|
307 | } else if changes.merged.contains(dest) { | |
| 270 | // If the file was actively merged, copy information from |
|
308 | // If the file was actively merged, copy information from | |
| 271 | // each side might conflict. The major side will win such |
|
309 | // each side might conflict. The major side will win such | |
| 272 | // conflict. |
|
310 | // conflict. | |
| 273 | pick_major(); |
|
311 | pick_major(); | |
| 274 | } else if is_ancestor(src_major.rev, src_minor.rev) { |
|
312 | } else if oracle.is_ancestor(src_major.rev, src_minor.rev) { | |
| 275 | // If the minor side is strictly newer than the major side, |
|
313 | // If the minor side is strictly newer than the major side, | |
| 276 | // it should be kept. |
|
314 | // it should be kept. | |
| 277 | pick_minor(); |
|
315 | pick_minor(); | |
| 278 | } else if src_major.path.is_some() { |
|
316 | } else if src_major.path.is_some() { | |
| 279 | // without any special case, the "major" value win other |
|
317 | // without any special case, the "major" value win other | |
| 280 | // the "minor" one. |
|
318 | // the "minor" one. | |
| 281 | pick_major(); |
|
319 | pick_major(); | |
| 282 | } else if is_ancestor(src_minor.rev, src_major.rev) { |
|
320 | } else if oracle.is_ancestor(src_minor.rev, src_major.rev) { | |
| 283 | // the "major" rev is a direct ancestors of "minor", any |
|
321 | // the "major" rev is a direct ancestors of "minor", any | |
| 284 | // different value should overwrite |
|
322 | // different value should overwrite | |
| 285 | pick_major(); |
|
323 | pick_major(); | |
| 286 | } else { |
|
324 | } else { | |
| 287 | // major version is None (so the file was deleted on that |
|
325 | // major version is None (so the file was deleted on that | |
| 288 | // branch) and that branch is independant (neither minor |
|
326 | // branch) and that branch is independant (neither minor | |
| 289 | // nor major is an ancestors of the other one.) We preserve |
|
327 | // nor major is an ancestors of the other one.) We preserve | |
| 290 | // the new information about the new file. |
|
328 | // the new information about the new file. | |
| 291 | pick_minor(); |
|
329 | pick_minor(); | |
| 292 | } |
|
330 | } | |
| 293 | } |
|
331 | } | |
| 294 | }; |
|
332 | }; | |
| 295 | } |
|
333 | } | |
| 296 |
|
334 | |||
| 297 | let updates; |
|
335 | let updates; | |
| 298 | let mut result; |
|
336 | let mut result; | |
| 299 | if override_major.is_empty() { |
|
337 | if override_major.is_empty() { | |
| 300 | result = major |
|
338 | result = major | |
| 301 | } else if override_minor.is_empty() { |
|
339 | } else if override_minor.is_empty() { | |
| 302 | result = minor |
|
340 | result = minor | |
| 303 | } else { |
|
341 | } else { | |
| 304 | if override_minor.len() < override_major.len() { |
|
342 | if override_minor.len() < override_major.len() { | |
| 305 | updates = override_minor; |
|
343 | updates = override_minor; | |
| 306 | result = minor; |
|
344 | result = minor; | |
| 307 | } else { |
|
345 | } else { | |
| 308 | updates = override_major; |
|
346 | updates = override_major; | |
| 309 | result = major; |
|
347 | result = major; | |
| 310 | } |
|
348 | } | |
| 311 | for (k, v) in updates { |
|
349 | for (k, v) in updates { | |
| 312 | result.insert(k, v); |
|
350 | result.insert(k, v); | |
| 313 | } |
|
351 | } | |
| 314 | } |
|
352 | } | |
| 315 | result |
|
353 | result | |
| 316 | } |
|
354 | } | |
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