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720d150c | 1 | #!/usr/bin/python |
857f26d2 FK |
2 | # |
3 | # Copyright (C) 2005 Fredrik Kuivinen | |
4 | # | |
720d150c | 5 | |
ad4f4daa JS |
6 | import sys |
7 | sys.path.append('''@@GIT_PYTHON_PATH@@''') | |
8 | ||
9 | import math, random, os, re, signal, tempfile, stat, errno, traceback | |
720d150c JH |
10 | from heapq import heappush, heappop |
11 | from sets import Set | |
12 | ||
720d150c JH |
13 | from gitMergeCommon import * |
14 | ||
46e65174 FK |
15 | outputIndent = 0 |
16 | def output(*args): | |
17 | sys.stdout.write(' '*outputIndent) | |
18 | printList(args) | |
19 | ||
6511cce2 FK |
20 | originalIndexFile = os.environ.get('GIT_INDEX_FILE', |
21 | os.environ.get('GIT_DIR', '.git') + '/index') | |
22 | temporaryIndexFile = os.environ.get('GIT_DIR', '.git') + \ | |
23 | '/merge-recursive-tmp-index' | |
24 | def setupIndex(temporary): | |
25 | try: | |
26 | os.unlink(temporaryIndexFile) | |
27 | except OSError: | |
28 | pass | |
29 | if temporary: | |
30 | newIndex = temporaryIndexFile | |
6511cce2 FK |
31 | else: |
32 | newIndex = originalIndexFile | |
33 | os.environ['GIT_INDEX_FILE'] = newIndex | |
34 | ||
af215114 FK |
35 | # This is a global variable which is used in a number of places but |
36 | # only written to in the 'merge' function. | |
37 | ||
38 | # cacheOnly == True => Don't leave any non-stage 0 entries in the cache and | |
39 | # don't update the working directory. | |
40 | # False => Leave unmerged entries in the cache and update | |
41 | # the working directory. | |
42 | ||
43 | cacheOnly = False | |
44 | ||
45 | # The entry point to the merge code | |
46 | # --------------------------------- | |
47 | ||
720d150c JH |
48 | def merge(h1, h2, branch1Name, branch2Name, graph, callDepth=0): |
49 | '''Merge the commits h1 and h2, return the resulting virtual | |
50 | commit object and a flag indicating the cleaness of the merge.''' | |
51 | assert(isinstance(h1, Commit) and isinstance(h2, Commit)) | |
52 | assert(isinstance(graph, Graph)) | |
53 | ||
46e65174 | 54 | global outputIndent |
af215114 | 55 | |
46e65174 FK |
56 | output('Merging:') |
57 | output(h1) | |
58 | output(h2) | |
720d150c JH |
59 | sys.stdout.flush() |
60 | ||
61 | ca = getCommonAncestors(graph, h1, h2) | |
46e65174 | 62 | output('found', len(ca), 'common ancestor(s):') |
720d150c | 63 | for x in ca: |
46e65174 | 64 | output(x) |
720d150c JH |
65 | sys.stdout.flush() |
66 | ||
af215114 | 67 | mergedCA = ca[0] |
720d150c | 68 | for h in ca[1:]: |
46e65174 | 69 | outputIndent = callDepth+1 |
af215114 | 70 | [mergedCA, dummy] = merge(mergedCA, h, |
46e65174 FK |
71 | 'Temporary merge branch 1', |
72 | 'Temporary merge branch 2', | |
af215114 | 73 | graph, callDepth+1) |
46e65174 | 74 | outputIndent = callDepth |
af215114 | 75 | assert(isinstance(mergedCA, Commit)) |
720d150c | 76 | |
af215114 | 77 | global cacheOnly |
720d150c | 78 | if callDepth == 0: |
6511cce2 | 79 | setupIndex(False) |
af215114 | 80 | cacheOnly = False |
720d150c | 81 | else: |
6511cce2 | 82 | setupIndex(True) |
720d150c | 83 | runProgram(['git-read-tree', h1.tree()]) |
af215114 | 84 | cacheOnly = True |
720d150c | 85 | |
af215114 FK |
86 | [shaRes, clean] = mergeTrees(h1.tree(), h2.tree(), mergedCA.tree(), |
87 | branch1Name, branch2Name) | |
720d150c | 88 | |
af215114 | 89 | if clean or cacheOnly: |
720d150c JH |
90 | res = Commit(None, [h1, h2], tree=shaRes) |
91 | graph.addNode(res) | |
92 | else: | |
93 | res = None | |
94 | ||
95 | return [res, clean] | |
96 | ||
74376a68 | 97 | getFilesRE = re.compile(r'^([0-7]+) (\S+) ([0-9a-f]{40})\t(.*)$', re.S) |
720d150c JH |
98 | def getFilesAndDirs(tree): |
99 | files = Set() | |
100 | dirs = Set() | |
a6b51f11 | 101 | out = runProgram(['git-ls-tree', '-r', '-z', '-t', tree]) |
720d150c JH |
102 | for l in out.split('\0'): |
103 | m = getFilesRE.match(l) | |
104 | if m: | |
105 | if m.group(2) == 'tree': | |
106 | dirs.add(m.group(4)) | |
107 | elif m.group(2) == 'blob': | |
108 | files.add(m.group(4)) | |
109 | ||
110 | return [files, dirs] | |
111 | ||
af215114 FK |
112 | # Those two global variables are used in a number of places but only |
113 | # written to in 'mergeTrees' and 'uniquePath'. They keep track of | |
114 | # every file and directory in the two branches that are about to be | |
115 | # merged. | |
116 | currentFileSet = None | |
117 | currentDirectorySet = None | |
118 | ||
119 | def mergeTrees(head, merge, common, branch1Name, branch2Name): | |
120 | '''Merge the trees 'head' and 'merge' with the common ancestor | |
121 | 'common'. The name of the head branch is 'branch1Name' and the name of | |
122 | the merge branch is 'branch2Name'. Return a tuple (tree, cleanMerge) | |
123 | where tree is the resulting tree and cleanMerge is True iff the | |
124 | merge was clean.''' | |
125 | ||
126 | assert(isSha(head) and isSha(merge) and isSha(common)) | |
127 | ||
128 | if common == merge: | |
46e65174 | 129 | output('Already uptodate!') |
af215114 FK |
130 | return [head, True] |
131 | ||
132 | if cacheOnly: | |
133 | updateArg = '-i' | |
134 | else: | |
135 | updateArg = '-u' | |
136 | ||
137 | [out, code] = runProgram(['git-read-tree', updateArg, '-m', | |
138 | common, head, merge], returnCode = True) | |
139 | if code != 0: | |
140 | die('git-read-tree:', out) | |
141 | ||
142 | [tree, code] = runProgram('git-write-tree', returnCode=True) | |
143 | tree = tree.rstrip() | |
144 | if code != 0: | |
145 | global currentFileSet, currentDirectorySet | |
146 | [currentFileSet, currentDirectorySet] = getFilesAndDirs(head) | |
147 | [filesM, dirsM] = getFilesAndDirs(merge) | |
148 | currentFileSet.union_update(filesM) | |
149 | currentDirectorySet.union_update(dirsM) | |
150 | ||
151 | entries = unmergedCacheEntries() | |
152 | renamesHead = getRenames(head, common, head, merge, entries) | |
153 | renamesMerge = getRenames(merge, common, head, merge, entries) | |
154 | ||
155 | cleanMerge = processRenames(renamesHead, renamesMerge, | |
156 | branch1Name, branch2Name) | |
157 | for entry in entries: | |
158 | if entry.processed: | |
159 | continue | |
160 | if not processEntry(entry, branch1Name, branch2Name): | |
161 | cleanMerge = False | |
162 | ||
163 | if cleanMerge or cacheOnly: | |
164 | tree = runProgram('git-write-tree').rstrip() | |
165 | else: | |
166 | tree = None | |
167 | else: | |
168 | cleanMerge = True | |
169 | ||
170 | return [tree, cleanMerge] | |
171 | ||
172 | # Low level file merging, update and removal | |
173 | # ------------------------------------------ | |
174 | ||
175 | def mergeFile(oPath, oSha, oMode, aPath, aSha, aMode, bPath, bSha, bMode, | |
176 | branch1Name, branch2Name): | |
177 | ||
c8a4f5e5 | 178 | merge = False |
af215114 FK |
179 | clean = True |
180 | ||
181 | if stat.S_IFMT(aMode) != stat.S_IFMT(bMode): | |
182 | clean = False | |
183 | if stat.S_ISREG(aMode): | |
184 | mode = aMode | |
185 | sha = aSha | |
186 | else: | |
187 | mode = bMode | |
188 | sha = bSha | |
189 | else: | |
190 | if aSha != oSha and bSha != oSha: | |
c8a4f5e5 | 191 | merge = True |
af215114 FK |
192 | |
193 | if aMode == oMode: | |
194 | mode = bMode | |
195 | else: | |
196 | mode = aMode | |
197 | ||
198 | if aSha == oSha: | |
199 | sha = bSha | |
200 | elif bSha == oSha: | |
201 | sha = aSha | |
202 | elif stat.S_ISREG(aMode): | |
203 | assert(stat.S_ISREG(bMode)) | |
204 | ||
205 | orig = runProgram(['git-unpack-file', oSha]).rstrip() | |
206 | src1 = runProgram(['git-unpack-file', aSha]).rstrip() | |
207 | src2 = runProgram(['git-unpack-file', bSha]).rstrip() | |
208 | [out, code] = runProgram(['merge', | |
209 | '-L', branch1Name + '/' + aPath, | |
210 | '-L', 'orig/' + oPath, | |
211 | '-L', branch2Name + '/' + bPath, | |
212 | src1, orig, src2], returnCode=True) | |
213 | ||
214 | sha = runProgram(['git-hash-object', '-t', 'blob', '-w', | |
215 | src1]).rstrip() | |
216 | ||
217 | os.unlink(orig) | |
218 | os.unlink(src1) | |
219 | os.unlink(src2) | |
d1745afa | 220 | |
af215114 FK |
221 | clean = (code == 0) |
222 | else: | |
223 | assert(stat.S_ISLNK(aMode) and stat.S_ISLNK(bMode)) | |
224 | sha = aSha | |
225 | ||
226 | if aSha != bSha: | |
227 | clean = False | |
228 | ||
229 | return [sha, mode, clean, merge] | |
230 | ||
231 | def updateFile(clean, sha, mode, path): | |
232 | updateCache = cacheOnly or clean | |
233 | updateWd = not cacheOnly | |
234 | ||
235 | return updateFileExt(sha, mode, path, updateCache, updateWd) | |
236 | ||
237 | def updateFileExt(sha, mode, path, updateCache, updateWd): | |
238 | if cacheOnly: | |
239 | updateWd = False | |
240 | ||
241 | if updateWd: | |
242 | pathComponents = path.split('/') | |
243 | for x in xrange(1, len(pathComponents)): | |
244 | p = '/'.join(pathComponents[0:x]) | |
245 | ||
246 | try: | |
247 | createDir = not stat.S_ISDIR(os.lstat(p).st_mode) | |
a6322d07 | 248 | except OSError: |
af215114 FK |
249 | createDir = True |
250 | ||
251 | if createDir: | |
252 | try: | |
253 | os.mkdir(p) | |
254 | except OSError, e: | |
255 | die("Couldn't create directory", p, e.strerror) | |
256 | ||
257 | prog = ['git-cat-file', 'blob', sha] | |
258 | if stat.S_ISREG(mode): | |
259 | try: | |
260 | os.unlink(path) | |
261 | except OSError: | |
262 | pass | |
263 | if mode & 0100: | |
264 | mode = 0777 | |
265 | else: | |
266 | mode = 0666 | |
267 | fd = os.open(path, os.O_WRONLY | os.O_TRUNC | os.O_CREAT, mode) | |
268 | proc = subprocess.Popen(prog, stdout=fd) | |
269 | proc.wait() | |
270 | os.close(fd) | |
271 | elif stat.S_ISLNK(mode): | |
272 | linkTarget = runProgram(prog) | |
273 | os.symlink(linkTarget, path) | |
274 | else: | |
275 | assert(False) | |
276 | ||
277 | if updateWd and updateCache: | |
278 | runProgram(['git-update-index', '--add', '--', path]) | |
279 | elif updateCache: | |
280 | runProgram(['git-update-index', '--add', '--cacheinfo', | |
281 | '0%o' % mode, sha, path]) | |
282 | ||
28e77a81 JH |
283 | def setIndexStages(path, |
284 | oSHA1, oMode, | |
285 | aSHA1, aMode, | |
286 | bSHA1, bMode): | |
157dc073 JH |
287 | runProgram(['git-update-index', '-z', '--index-info'], |
288 | input="0 " + ("0" * 40) + "\t" + path + "\0" + \ | |
289 | "%o %s %d\t%s\0" % (oMode, oSHA1, 1, path) + \ | |
290 | "%o %s %d\t%s\0" % (aMode, aSHA1, 2, path) + \ | |
291 | "%o %s %d\t%s\0" % (bMode, bSHA1, 3, path)) | |
28e77a81 | 292 | |
af215114 FK |
293 | def removeFile(clean, path): |
294 | updateCache = cacheOnly or clean | |
295 | updateWd = not cacheOnly | |
296 | ||
297 | if updateCache: | |
298 | runProgram(['git-update-index', '--force-remove', '--', path]) | |
299 | ||
300 | if updateWd: | |
301 | try: | |
302 | os.unlink(path) | |
303 | except OSError, e: | |
304 | if e.errno != errno.ENOENT and e.errno != errno.EISDIR: | |
305 | raise | |
80e21a9e JH |
306 | try: |
307 | os.removedirs(os.path.dirname(path)) | |
a6322d07 | 308 | except OSError: |
80e21a9e | 309 | pass |
af215114 FK |
310 | |
311 | def uniquePath(path, branch): | |
312 | def fileExists(path): | |
313 | try: | |
314 | os.lstat(path) | |
315 | return True | |
316 | except OSError, e: | |
317 | if e.errno == errno.ENOENT: | |
318 | return False | |
319 | else: | |
320 | raise | |
321 | ||
186f855f | 322 | branch = branch.replace('/', '_') |
e9af60c8 | 323 | newPath = path + '~' + branch |
af215114 FK |
324 | suffix = 0 |
325 | while newPath in currentFileSet or \ | |
326 | newPath in currentDirectorySet or \ | |
327 | fileExists(newPath): | |
328 | suffix += 1 | |
e9af60c8 | 329 | newPath = path + '~' + branch + '_' + str(suffix) |
af215114 FK |
330 | currentFileSet.add(newPath) |
331 | return newPath | |
332 | ||
333 | # Cache entry management | |
334 | # ---------------------- | |
335 | ||
720d150c JH |
336 | class CacheEntry: |
337 | def __init__(self, path): | |
338 | class Stage: | |
339 | def __init__(self): | |
340 | self.sha1 = None | |
341 | self.mode = None | |
af215114 FK |
342 | |
343 | # Used for debugging only | |
344 | def __str__(self): | |
345 | if self.mode != None: | |
346 | m = '0%o' % self.mode | |
347 | else: | |
348 | m = 'None' | |
349 | ||
350 | if self.sha1: | |
351 | sha1 = self.sha1 | |
352 | else: | |
353 | sha1 = 'None' | |
354 | return 'sha1: ' + sha1 + ' mode: ' + m | |
720d150c | 355 | |
af215114 | 356 | self.stages = [Stage(), Stage(), Stage(), Stage()] |
720d150c | 357 | self.path = path |
af215114 FK |
358 | self.processed = False |
359 | ||
360 | def __str__(self): | |
361 | return 'path: ' + self.path + ' stages: ' + repr([str(x) for x in self.stages]) | |
720d150c | 362 | |
af215114 FK |
363 | class CacheEntryContainer: |
364 | def __init__(self): | |
365 | self.entries = {} | |
366 | ||
367 | def add(self, entry): | |
368 | self.entries[entry.path] = entry | |
369 | ||
370 | def get(self, path): | |
371 | return self.entries.get(path) | |
372 | ||
373 | def __iter__(self): | |
374 | return self.entries.itervalues() | |
375 | ||
74376a68 | 376 | unmergedRE = re.compile(r'^([0-7]+) ([0-9a-f]{40}) ([1-3])\t(.*)$', re.S) |
720d150c JH |
377 | def unmergedCacheEntries(): |
378 | '''Create a dictionary mapping file names to CacheEntry | |
379 | objects. The dictionary contains one entry for every path with a | |
380 | non-zero stage entry.''' | |
381 | ||
382 | lines = runProgram(['git-ls-files', '-z', '--unmerged']).split('\0') | |
383 | lines.pop() | |
384 | ||
af215114 | 385 | res = CacheEntryContainer() |
720d150c JH |
386 | for l in lines: |
387 | m = unmergedRE.match(l) | |
388 | if m: | |
389 | mode = int(m.group(1), 8) | |
390 | sha1 = m.group(2) | |
af215114 | 391 | stage = int(m.group(3)) |
720d150c JH |
392 | path = m.group(4) |
393 | ||
af215114 FK |
394 | e = res.get(path) |
395 | if not e: | |
720d150c | 396 | e = CacheEntry(path) |
af215114 FK |
397 | res.add(e) |
398 | ||
720d150c JH |
399 | e.stages[stage].mode = mode |
400 | e.stages[stage].sha1 = sha1 | |
401 | else: | |
af215114 | 402 | die('Error: Merge program failed: Unexpected output from', |
654291a2 | 403 | 'git-ls-files:', l) |
720d150c JH |
404 | return res |
405 | ||
af215114 FK |
406 | lsTreeRE = re.compile(r'^([0-7]+) (\S+) ([0-9a-f]{40})\t(.*)\n$', re.S) |
407 | def getCacheEntry(path, origTree, aTree, bTree): | |
408 | '''Returns a CacheEntry object which doesn't have to correspond to | |
409 | a real cache entry in Git's index.''' | |
720d150c | 410 | |
af215114 FK |
411 | def parse(out): |
412 | if out == '': | |
413 | return [None, None] | |
414 | else: | |
415 | m = lsTreeRE.match(out) | |
416 | if not m: | |
417 | die('Unexpected output from git-ls-tree:', out) | |
418 | elif m.group(2) == 'blob': | |
419 | return [m.group(3), int(m.group(1), 8)] | |
420 | else: | |
421 | return [None, None] | |
720d150c | 422 | |
af215114 | 423 | res = CacheEntry(path) |
720d150c | 424 | |
af215114 FK |
425 | [oSha, oMode] = parse(runProgram(['git-ls-tree', origTree, '--', path])) |
426 | [aSha, aMode] = parse(runProgram(['git-ls-tree', aTree, '--', path])) | |
427 | [bSha, bMode] = parse(runProgram(['git-ls-tree', bTree, '--', path])) | |
d9a23fa6 | 428 | |
af215114 FK |
429 | res.stages[1].sha1 = oSha |
430 | res.stages[1].mode = oMode | |
431 | res.stages[2].sha1 = aSha | |
432 | res.stages[2].mode = aMode | |
433 | res.stages[3].sha1 = bSha | |
434 | res.stages[3].mode = bMode | |
0bed1899 | 435 | |
af215114 | 436 | return res |
720d150c | 437 | |
af215114 FK |
438 | # Rename detection and handling |
439 | # ----------------------------- | |
440 | ||
441 | class RenameEntry: | |
442 | def __init__(self, | |
443 | src, srcSha, srcMode, srcCacheEntry, | |
444 | dst, dstSha, dstMode, dstCacheEntry, | |
445 | score): | |
446 | self.srcName = src | |
447 | self.srcSha = srcSha | |
448 | self.srcMode = srcMode | |
449 | self.srcCacheEntry = srcCacheEntry | |
450 | self.dstName = dst | |
451 | self.dstSha = dstSha | |
452 | self.dstMode = dstMode | |
453 | self.dstCacheEntry = dstCacheEntry | |
454 | self.score = score | |
455 | ||
456 | self.processed = False | |
457 | ||
458 | class RenameEntryContainer: | |
459 | def __init__(self): | |
460 | self.entriesSrc = {} | |
461 | self.entriesDst = {} | |
462 | ||
463 | def add(self, entry): | |
464 | self.entriesSrc[entry.srcName] = entry | |
465 | self.entriesDst[entry.dstName] = entry | |
466 | ||
467 | def getSrc(self, path): | |
468 | return self.entriesSrc.get(path) | |
469 | ||
470 | def getDst(self, path): | |
471 | return self.entriesDst.get(path) | |
472 | ||
473 | def __iter__(self): | |
474 | return self.entriesSrc.itervalues() | |
475 | ||
476 | parseDiffRenamesRE = re.compile('^:([0-7]+) ([0-7]+) ([0-9a-f]{40}) ([0-9a-f]{40}) R([0-9]*)$') | |
477 | def getRenames(tree, oTree, aTree, bTree, cacheEntries): | |
478 | '''Get information of all renames which occured between 'oTree' and | |
479 | 'tree'. We need the three trees in the merge ('oTree', 'aTree' and | |
480 | 'bTree') to be able to associate the correct cache entries with | |
481 | the rename information. 'tree' is always equal to either aTree or bTree.''' | |
482 | ||
483 | assert(tree == aTree or tree == bTree) | |
484 | inp = runProgram(['git-diff-tree', '-M', '--diff-filter=R', '-r', | |
485 | '-z', oTree, tree]) | |
486 | ||
487 | ret = RenameEntryContainer() | |
488 | try: | |
489 | recs = inp.split("\0") | |
490 | recs.pop() # remove last entry (which is '') | |
491 | it = recs.__iter__() | |
492 | while True: | |
493 | rec = it.next() | |
494 | m = parseDiffRenamesRE.match(rec) | |
495 | ||
496 | if not m: | |
497 | die('Unexpected output from git-diff-tree:', rec) | |
498 | ||
499 | srcMode = int(m.group(1), 8) | |
500 | dstMode = int(m.group(2), 8) | |
501 | srcSha = m.group(3) | |
502 | dstSha = m.group(4) | |
503 | score = m.group(5) | |
504 | src = it.next() | |
505 | dst = it.next() | |
506 | ||
507 | srcCacheEntry = cacheEntries.get(src) | |
508 | if not srcCacheEntry: | |
509 | srcCacheEntry = getCacheEntry(src, oTree, aTree, bTree) | |
510 | cacheEntries.add(srcCacheEntry) | |
511 | ||
512 | dstCacheEntry = cacheEntries.get(dst) | |
513 | if not dstCacheEntry: | |
514 | dstCacheEntry = getCacheEntry(dst, oTree, aTree, bTree) | |
515 | cacheEntries.add(dstCacheEntry) | |
516 | ||
517 | ret.add(RenameEntry(src, srcSha, srcMode, srcCacheEntry, | |
518 | dst, dstSha, dstMode, dstCacheEntry, | |
519 | score)) | |
520 | except StopIteration: | |
521 | pass | |
522 | return ret | |
523 | ||
524 | def fmtRename(src, dst): | |
525 | srcPath = src.split('/') | |
526 | dstPath = dst.split('/') | |
527 | path = [] | |
528 | endIndex = min(len(srcPath), len(dstPath)) - 1 | |
529 | for x in range(0, endIndex): | |
530 | if srcPath[x] == dstPath[x]: | |
531 | path.append(srcPath[x]) | |
720d150c | 532 | else: |
af215114 FK |
533 | endIndex = x |
534 | break | |
535 | ||
536 | if len(path) > 0: | |
537 | return '/'.join(path) + \ | |
538 | '/{' + '/'.join(srcPath[endIndex:]) + ' => ' + \ | |
539 | '/'.join(dstPath[endIndex:]) + '}' | |
720d150c | 540 | else: |
af215114 | 541 | return src + ' => ' + dst |
720d150c | 542 | |
af215114 FK |
543 | def processRenames(renamesA, renamesB, branchNameA, branchNameB): |
544 | srcNames = Set() | |
545 | for x in renamesA: | |
546 | srcNames.add(x.srcName) | |
547 | for x in renamesB: | |
548 | srcNames.add(x.srcName) | |
720d150c | 549 | |
af215114 FK |
550 | cleanMerge = True |
551 | for path in srcNames: | |
552 | if renamesA.getSrc(path): | |
553 | renames1 = renamesA | |
554 | renames2 = renamesB | |
555 | branchName1 = branchNameA | |
556 | branchName2 = branchNameB | |
557 | else: | |
558 | renames1 = renamesB | |
559 | renames2 = renamesA | |
560 | branchName1 = branchNameB | |
561 | branchName2 = branchNameA | |
562 | ||
563 | ren1 = renames1.getSrc(path) | |
564 | ren2 = renames2.getSrc(path) | |
565 | ||
566 | ren1.dstCacheEntry.processed = True | |
567 | ren1.srcCacheEntry.processed = True | |
568 | ||
569 | if ren1.processed: | |
570 | continue | |
571 | ||
572 | ren1.processed = True | |
573 | removeFile(True, ren1.srcName) | |
574 | if ren2: | |
575 | # Renamed in 1 and renamed in 2 | |
576 | assert(ren1.srcName == ren2.srcName) | |
577 | ren2.dstCacheEntry.processed = True | |
578 | ren2.processed = True | |
579 | ||
580 | if ren1.dstName != ren2.dstName: | |
46e65174 FK |
581 | output('CONFLICT (rename/rename): Rename', |
582 | fmtRename(path, ren1.dstName), 'in branch', branchName1, | |
583 | 'rename', fmtRename(path, ren2.dstName), 'in', | |
584 | branchName2) | |
af215114 | 585 | cleanMerge = False |
720d150c | 586 | |
af215114 FK |
587 | if ren1.dstName in currentDirectorySet: |
588 | dstName1 = uniquePath(ren1.dstName, branchName1) | |
46e65174 FK |
589 | output(ren1.dstName, 'is a directory in', branchName2, |
590 | 'adding as', dstName1, 'instead.') | |
af215114 FK |
591 | removeFile(False, ren1.dstName) |
592 | else: | |
593 | dstName1 = ren1.dstName | |
720d150c | 594 | |
af215114 FK |
595 | if ren2.dstName in currentDirectorySet: |
596 | dstName2 = uniquePath(ren2.dstName, branchName2) | |
46e65174 FK |
597 | output(ren2.dstName, 'is a directory in', branchName1, |
598 | 'adding as', dstName2, 'instead.') | |
af215114 FK |
599 | removeFile(False, ren2.dstName) |
600 | else: | |
601 | dstName2 = ren1.dstName | |
720d150c | 602 | |
28e77a81 JH |
603 | # NEEDSWORK: place dstNameA at stage 2 and dstNameB at stage 3 |
604 | # What about other stages??? | |
af215114 FK |
605 | updateFile(False, ren1.dstSha, ren1.dstMode, dstName1) |
606 | updateFile(False, ren2.dstSha, ren2.dstMode, dstName2) | |
607 | else: | |
af215114 FK |
608 | [resSha, resMode, clean, merge] = \ |
609 | mergeFile(ren1.srcName, ren1.srcSha, ren1.srcMode, | |
610 | ren1.dstName, ren1.dstSha, ren1.dstMode, | |
611 | ren2.dstName, ren2.dstSha, ren2.dstMode, | |
612 | branchName1, branchName2) | |
613 | ||
d1745afa | 614 | if merge or not clean: |
46e65174 | 615 | output('Renaming', fmtRename(path, ren1.dstName)) |
d1745afa | 616 | |
c8a4f5e5 | 617 | if merge: |
46e65174 | 618 | output('Auto-merging', ren1.dstName) |
af215114 FK |
619 | |
620 | if not clean: | |
46e65174 FK |
621 | output('CONFLICT (content): merge conflict in', |
622 | ren1.dstName) | |
af215114 FK |
623 | cleanMerge = False |
624 | ||
625 | if not cacheOnly: | |
28e77a81 JH |
626 | setIndexStages(ren1.dstName, |
627 | ren1.srcSha, ren1.srcMode, | |
628 | ren1.dstSha, ren1.dstMode, | |
629 | ren2.dstSha, ren2.dstMode) | |
630 | ||
af215114 FK |
631 | updateFile(clean, resSha, resMode, ren1.dstName) |
632 | else: | |
633 | # Renamed in 1, maybe changed in 2 | |
634 | if renamesA == renames1: | |
635 | stage = 3 | |
636 | else: | |
637 | stage = 2 | |
638 | ||
639 | srcShaOtherBranch = ren1.srcCacheEntry.stages[stage].sha1 | |
640 | srcModeOtherBranch = ren1.srcCacheEntry.stages[stage].mode | |
641 | ||
642 | dstShaOtherBranch = ren1.dstCacheEntry.stages[stage].sha1 | |
643 | dstModeOtherBranch = ren1.dstCacheEntry.stages[stage].mode | |
644 | ||
645 | tryMerge = False | |
646 | ||
647 | if ren1.dstName in currentDirectorySet: | |
648 | newPath = uniquePath(ren1.dstName, branchName1) | |
46e65174 FK |
649 | output('CONFLICT (rename/directory): Rename', |
650 | fmtRename(ren1.srcName, ren1.dstName), 'in', branchName1, | |
651 | 'directory', ren1.dstName, 'added in', branchName2) | |
652 | output('Renaming', ren1.srcName, 'to', newPath, 'instead') | |
af215114 FK |
653 | cleanMerge = False |
654 | removeFile(False, ren1.dstName) | |
655 | updateFile(False, ren1.dstSha, ren1.dstMode, newPath) | |
656 | elif srcShaOtherBranch == None: | |
46e65174 FK |
657 | output('CONFLICT (rename/delete): Rename', |
658 | fmtRename(ren1.srcName, ren1.dstName), 'in', | |
659 | branchName1, 'and deleted in', branchName2) | |
af215114 FK |
660 | cleanMerge = False |
661 | updateFile(False, ren1.dstSha, ren1.dstMode, ren1.dstName) | |
662 | elif dstShaOtherBranch: | |
663 | newPath = uniquePath(ren1.dstName, branchName2) | |
46e65174 FK |
664 | output('CONFLICT (rename/add): Rename', |
665 | fmtRename(ren1.srcName, ren1.dstName), 'in', | |
666 | branchName1 + '.', ren1.dstName, 'added in', branchName2) | |
667 | output('Adding as', newPath, 'instead') | |
af215114 FK |
668 | updateFile(False, dstShaOtherBranch, dstModeOtherBranch, newPath) |
669 | cleanMerge = False | |
670 | tryMerge = True | |
671 | elif renames2.getDst(ren1.dstName): | |
672 | dst2 = renames2.getDst(ren1.dstName) | |
673 | newPath1 = uniquePath(ren1.dstName, branchName1) | |
674 | newPath2 = uniquePath(dst2.dstName, branchName2) | |
46e65174 FK |
675 | output('CONFLICT (rename/rename): Rename', |
676 | fmtRename(ren1.srcName, ren1.dstName), 'in', | |
677 | branchName1+'. Rename', | |
678 | fmtRename(dst2.srcName, dst2.dstName), 'in', branchName2) | |
679 | output('Renaming', ren1.srcName, 'to', newPath1, 'and', | |
680 | dst2.srcName, 'to', newPath2, 'instead') | |
af215114 FK |
681 | removeFile(False, ren1.dstName) |
682 | updateFile(False, ren1.dstSha, ren1.dstMode, newPath1) | |
683 | updateFile(False, dst2.dstSha, dst2.dstMode, newPath2) | |
684 | dst2.processed = True | |
685 | cleanMerge = False | |
686 | else: | |
687 | tryMerge = True | |
720d150c | 688 | |
af215114 | 689 | if tryMerge: |
28e77a81 JH |
690 | |
691 | oName, oSHA1, oMode = ren1.srcName, ren1.srcSha, ren1.srcMode | |
692 | aName, bName = ren1.dstName, ren1.srcName | |
693 | aSHA1, bSHA1 = ren1.dstSha, srcShaOtherBranch | |
694 | aMode, bMode = ren1.dstMode, srcModeOtherBranch | |
695 | aBranch, bBranch = branchName1, branchName2 | |
696 | ||
697 | if renamesA != renames1: | |
698 | aName, bName = bName, aName | |
699 | aSHA1, bSHA1 = bSHA1, aSHA1 | |
700 | aMode, bMode = bMode, aMode | |
701 | aBranch, bBranch = bBranch, aBranch | |
702 | ||
af215114 | 703 | [resSha, resMode, clean, merge] = \ |
28e77a81 JH |
704 | mergeFile(oName, oSHA1, oMode, |
705 | aName, aSHA1, aMode, | |
706 | bName, bSHA1, bMode, | |
707 | aBranch, bBranch); | |
720d150c | 708 | |
d1745afa | 709 | if merge or not clean: |
46e65174 | 710 | output('Renaming', fmtRename(ren1.srcName, ren1.dstName)) |
d1745afa | 711 | |
c8a4f5e5 | 712 | if merge: |
46e65174 | 713 | output('Auto-merging', ren1.dstName) |
d9a23fa6 | 714 | |
af215114 | 715 | if not clean: |
46e65174 FK |
716 | output('CONFLICT (rename/modify): Merge conflict in', |
717 | ren1.dstName) | |
af215114 | 718 | cleanMerge = False |
720d150c | 719 | |
af215114 | 720 | if not cacheOnly: |
28e77a81 JH |
721 | setIndexStages(ren1.dstName, |
722 | oSHA1, oMode, | |
723 | aSHA1, aMode, | |
724 | bSHA1, bMode) | |
725 | ||
af215114 | 726 | updateFile(clean, resSha, resMode, ren1.dstName) |
720d150c | 727 | |
af215114 | 728 | return cleanMerge |
720d150c | 729 | |
af215114 FK |
730 | # Per entry merge function |
731 | # ------------------------ | |
720d150c | 732 | |
af215114 FK |
733 | def processEntry(entry, branch1Name, branch2Name): |
734 | '''Merge one cache entry.''' | |
735 | ||
736 | debug('processing', entry.path, 'clean cache:', cacheOnly) | |
720d150c JH |
737 | |
738 | cleanMerge = True | |
739 | ||
740 | path = entry.path | |
af215114 FK |
741 | oSha = entry.stages[1].sha1 |
742 | oMode = entry.stages[1].mode | |
743 | aSha = entry.stages[2].sha1 | |
744 | aMode = entry.stages[2].mode | |
745 | bSha = entry.stages[3].sha1 | |
746 | bMode = entry.stages[3].mode | |
720d150c JH |
747 | |
748 | assert(oSha == None or isSha(oSha)) | |
749 | assert(aSha == None or isSha(aSha)) | |
750 | assert(bSha == None or isSha(bSha)) | |
751 | ||
752 | assert(oMode == None or type(oMode) is int) | |
753 | assert(aMode == None or type(aMode) is int) | |
754 | assert(bMode == None or type(bMode) is int) | |
755 | ||
756 | if (oSha and (not aSha or not bSha)): | |
757 | # | |
758 | # Case A: Deleted in one | |
759 | # | |
760 | if (not aSha and not bSha) or \ | |
761 | (aSha == oSha and not bSha) or \ | |
762 | (not aSha and bSha == oSha): | |
763 | # Deleted in both or deleted in one and unchanged in the other | |
764 | if aSha: | |
46e65174 | 765 | output('Removing', path) |
720d150c JH |
766 | removeFile(True, path) |
767 | else: | |
768 | # Deleted in one and changed in the other | |
769 | cleanMerge = False | |
770 | if not aSha: | |
46e65174 FK |
771 | output('CONFLICT (delete/modify):', path, 'deleted in', |
772 | branch1Name, 'and modified in', branch2Name + '.', | |
773 | 'Version', branch2Name, 'of', path, 'left in tree.') | |
720d150c JH |
774 | mode = bMode |
775 | sha = bSha | |
776 | else: | |
46e65174 FK |
777 | output('CONFLICT (modify/delete):', path, 'deleted in', |
778 | branch2Name, 'and modified in', branch1Name + '.', | |
779 | 'Version', branch1Name, 'of', path, 'left in tree.') | |
720d150c JH |
780 | mode = aMode |
781 | sha = aSha | |
782 | ||
783 | updateFile(False, sha, mode, path) | |
af215114 | 784 | |
720d150c JH |
785 | elif (not oSha and aSha and not bSha) or \ |
786 | (not oSha and not aSha and bSha): | |
787 | # | |
788 | # Case B: Added in one. | |
789 | # | |
790 | if aSha: | |
791 | addBranch = branch1Name | |
792 | otherBranch = branch2Name | |
793 | mode = aMode | |
794 | sha = aSha | |
af215114 | 795 | conf = 'file/directory' |
720d150c JH |
796 | else: |
797 | addBranch = branch2Name | |
798 | otherBranch = branch1Name | |
799 | mode = bMode | |
800 | sha = bSha | |
af215114 | 801 | conf = 'directory/file' |
720d150c | 802 | |
af215114 | 803 | if path in currentDirectorySet: |
720d150c JH |
804 | cleanMerge = False |
805 | newPath = uniquePath(path, addBranch) | |
46e65174 FK |
806 | output('CONFLICT (' + conf + '):', |
807 | 'There is a directory with name', path, 'in', | |
808 | otherBranch + '. Adding', path, 'as', newPath) | |
720d150c JH |
809 | |
810 | removeFile(False, path) | |
af215114 | 811 | updateFile(False, sha, mode, newPath) |
720d150c | 812 | else: |
46e65174 | 813 | output('Adding', path) |
af215114 | 814 | updateFile(True, sha, mode, path) |
720d150c JH |
815 | |
816 | elif not oSha and aSha and bSha: | |
817 | # | |
818 | # Case C: Added in both (check for same permissions). | |
819 | # | |
820 | if aSha == bSha: | |
821 | if aMode != bMode: | |
822 | cleanMerge = False | |
46e65174 FK |
823 | output('CONFLICT: File', path, |
824 | 'added identically in both branches, but permissions', | |
825 | 'conflict', '0%o' % aMode, '->', '0%o' % bMode) | |
826 | output('CONFLICT: adding with permission:', '0%o' % aMode) | |
720d150c JH |
827 | |
828 | updateFile(False, aSha, aMode, path) | |
829 | else: | |
830 | # This case is handled by git-read-tree | |
831 | assert(False) | |
832 | else: | |
833 | cleanMerge = False | |
834 | newPath1 = uniquePath(path, branch1Name) | |
835 | newPath2 = uniquePath(path, branch2Name) | |
46e65174 FK |
836 | output('CONFLICT (add/add): File', path, |
837 | 'added non-identically in both branches. Adding as', | |
838 | newPath1, 'and', newPath2, 'instead.') | |
720d150c JH |
839 | removeFile(False, path) |
840 | updateFile(False, aSha, aMode, newPath1) | |
841 | updateFile(False, bSha, bMode, newPath2) | |
842 | ||
843 | elif oSha and aSha and bSha: | |
844 | # | |
845 | # case D: Modified in both, but differently. | |
846 | # | |
46e65174 | 847 | output('Auto-merging', path) |
af215114 FK |
848 | [sha, mode, clean, dummy] = \ |
849 | mergeFile(path, oSha, oMode, | |
850 | path, aSha, aMode, | |
851 | path, bSha, bMode, | |
852 | branch1Name, branch2Name) | |
853 | if clean: | |
854 | updateFile(True, sha, mode, path) | |
720d150c | 855 | else: |
720d150c | 856 | cleanMerge = False |
46e65174 | 857 | output('CONFLICT (content): Merge conflict in', path) |
d9a23fa6 | 858 | |
af215114 | 859 | if cacheOnly: |
d9a23fa6 FK |
860 | updateFile(False, sha, mode, path) |
861 | else: | |
af215114 | 862 | updateFileExt(sha, mode, path, updateCache=False, updateWd=True) |
720d150c | 863 | else: |
654291a2 | 864 | die("ERROR: Fatal merge failure, shouldn't happen.") |
720d150c JH |
865 | |
866 | return cleanMerge | |
867 | ||
868 | def usage(): | |
654291a2 | 869 | die('Usage:', sys.argv[0], ' <base>... -- <head> <remote>..') |
720d150c JH |
870 | |
871 | # main entry point as merge strategy module | |
872 | # The first parameters up to -- are merge bases, and the rest are heads. | |
873 | # This strategy module figures out merge bases itself, so we only | |
874 | # get heads. | |
875 | ||
206e587c FK |
876 | if len(sys.argv) < 4: |
877 | usage() | |
878 | ||
720d150c JH |
879 | for nextArg in xrange(1, len(sys.argv)): |
880 | if sys.argv[nextArg] == '--': | |
881 | if len(sys.argv) != nextArg + 3: | |
654291a2 | 882 | die('Not handling anything other than two heads merge.') |
720d150c JH |
883 | try: |
884 | h1 = firstBranch = sys.argv[nextArg + 1] | |
885 | h2 = secondBranch = sys.argv[nextArg + 2] | |
af215114 | 886 | except IndexError: |
720d150c JH |
887 | usage() |
888 | break | |
889 | ||
890 | print 'Merging', h1, 'with', h2 | |
720d150c | 891 | |
ace36858 FK |
892 | try: |
893 | h1 = runProgram(['git-rev-parse', '--verify', h1 + '^0']).rstrip() | |
894 | h2 = runProgram(['git-rev-parse', '--verify', h2 + '^0']).rstrip() | |
720d150c | 895 | |
ace36858 | 896 | graph = buildGraph([h1, h2]) |
720d150c | 897 | |
af215114 FK |
898 | [dummy, clean] = merge(graph.shaMap[h1], graph.shaMap[h2], |
899 | firstBranch, secondBranch, graph) | |
ace36858 FK |
900 | |
901 | print '' | |
902 | except: | |
0bed1899 FK |
903 | if isinstance(sys.exc_info()[1], SystemExit): |
904 | raise | |
905 | else: | |
906 | traceback.print_exc(None, sys.stderr) | |
907 | sys.exit(2) | |
720d150c JH |
908 | |
909 | if clean: | |
910 | sys.exit(0) | |
911 | else: | |
720d150c | 912 | sys.exit(1) |