contrib/fast-import/git-p4

   1 #!/usr/bin/env python
   2 #
   3 # git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4 #
   5 # Author: Simon Hausmann <hausmann@kde.org>
   6 # Copyright: 2007 Simon Hausmann <hausmann@kde.org>
   7 #            2007 Trolltech ASA
   8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9 #
  10
  11 import optparse, sys, os, marshal, popen2, shelve
  12 import tempfile, getopt, sha, os.path, time
  13 from sets import Set;
  14
  15 gitdir = os.environ.get("GIT_DIR", "")
  16
  17 def p4CmdList(cmd):
  18     cmd = "p4 -G %s" % cmd
  19     pipe = os.popen(cmd, "rb")
  20
  21     result = []
  22     try:
  23         while True:
  24             entry = marshal.load(pipe)
  25             result.append(entry)
  26     except EOFError:
  27         pass
  28     pipe.close()
  29
  30     return result
  31
  32 def p4Cmd(cmd):
  33     list = p4CmdList(cmd)
  34     result = {}
  35     for entry in list:
  36         result.update(entry)
  37     return result;
  38
  39 def die(msg):
  40     sys.stderr.write(msg + "\n")
  41     sys.exit(1)
  42
  43 def currentGitBranch():
  44     return os.popen("git-name-rev HEAD").read().split(" ")[1][:-1]
  45
  46 def isValidGitDir(path):
  47     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  48         return True;
  49     return False
  50
  51 def system(cmd):
  52     if os.system(cmd) != 0:
  53         die("command failed: %s" % cmd)
  54
  55 def extractLogMessageFromGitCommit(commit):
  56     logMessage = ""
  57     foundTitle = False
  58     for log in os.popen("git-cat-file commit %s" % commit).readlines():
  59        if not foundTitle:
  60            if len(log) == 1:
  61                foundTitle = 1
  62            continue
  63
  64        logMessage += log
  65     return logMessage
  66
  67 def extractDepotPathAndChangeFromGitLog(log):
  68     values = {}
  69     for line in log.split("\n"):
  70         line = line.strip()
  71         if line.startswith("[git-p4:") and line.endswith("]"):
  72             line = line[8:-1].strip()
  73             for assignment in line.split(":"):
  74                 variable = assignment.strip()
  75                 value = ""
  76                 equalPos = assignment.find("=")
  77                 if equalPos != -1:
  78                     variable = assignment[:equalPos].strip()
  79                     value = assignment[equalPos + 1:].strip()
  80                     if value.startswith("\"") and value.endswith("\""):
  81                         value = value[1:-1]
  82                 values[variable] = value
  83
  84     return values.get("depot-path"), values.get("change")
  85
  86 class Command:
  87     def __init__(self):
  88         self.usage = "usage: %prog [options]"
  89
  90 class P4Debug(Command):
  91     def __init__(self):
  92         Command.__init__(self)
  93         self.options = [
  94         ]
  95         self.description = "A tool to debug the output of p4 -G."
  96
  97     def run(self, args):
  98         for output in p4CmdList(" ".join(args)):
  99             print output
 100         return True
 101
 102 class P4CleanTags(Command):
 103     def __init__(self):
 104         Command.__init__(self)
 105         self.options = [
 106 #                optparse.make_option("--branch", dest="branch", default="refs/heads/master")
 107         ]
 108         self.description = "A tool to remove stale unused tags from incremental perforce imports."
 109     def run(self, args):
 110         branch = currentGitBranch()
 111         print "Cleaning out stale p4 import tags..."
 112         sout, sin, serr = popen2.popen3("git-name-rev --tags `git-rev-parse %s`" % branch)
 113         output = sout.read()
 114         try:
 115             tagIdx = output.index(" tags/p4/")
 116         except:
 117             print "Cannot find any p4/* tag. Nothing to do."
 118             sys.exit(0)
 119
 120         try:
 121             caretIdx = output.index("^")
 122         except:
 123             caretIdx = len(output) - 1
 124         rev = int(output[tagIdx + 9 : caretIdx])
 125
 126         allTags = os.popen("git tag -l p4/").readlines()
 127         for i in range(len(allTags)):
 128             allTags[i] = int(allTags[i][3:-1])
 129
 130         allTags.sort()
 131
 132         allTags.remove(rev)
 133
 134         for rev in allTags:
 135             print os.popen("git tag -d p4/%s" % rev).read()
 136
 137         print "%s tags removed." % len(allTags)
 138         return True
 139
 140 class P4Sync(Command):
 141     def __init__(self):
 142         Command.__init__(self)
 143         self.options = [
 144                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 145                 optparse.make_option("--origin", dest="origin"),
 146                 optparse.make_option("--reset", action="store_true", dest="reset"),
 147                 optparse.make_option("--master", dest="master"),
 148                 optparse.make_option("--log-substitutions", dest="substFile"),
 149                 optparse.make_option("--noninteractive", action="store_false"),
 150                 optparse.make_option("--dry-run", action="store_true"),
 151                 optparse.make_option("--apply-as-patch", action="store_true", dest="applyAsPatch")
 152         ]
 153         self.description = "Submit changes from git to the perforce depot."
 154         self.firstTime = True
 155         self.reset = False
 156         self.interactive = True
 157         self.dryRun = False
 158         self.substFile = ""
 159         self.firstTime = True
 160         self.origin = "origin"
 161         self.master = ""
 162         self.applyAsPatch = True
 163
 164         self.logSubstitutions = {}
 165         self.logSubstitutions["<enter description here>"] = "%log%"
 166         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 167
 168     def check(self):
 169         if len(p4CmdList("opened ...")) > 0:
 170             die("You have files opened with perforce! Close them before starting the sync.")
 171
 172     def start(self):
 173         if len(self.config) > 0 and not self.reset:
 174             die("Cannot start sync. Previous sync config found at %s" % self.configFile)
 175
 176         commits = []
 177         for line in os.popen("git-rev-list --no-merges %s..%s" % (self.origin, self.master)).readlines():
 178             commits.append(line[:-1])
 179         commits.reverse()
 180
 181         self.config["commits"] = commits
 182
 183         if not self.applyAsPatch:
 184             print "Creating temporary p4-sync branch from %s ..." % self.origin
 185             system("git checkout -f -b p4-sync %s" % self.origin)
 186
 187     def prepareLogMessage(self, template, message):
 188         result = ""
 189
 190         for line in template.split("\n"):
 191             if line.startswith("#"):
 192                 result += line + "\n"
 193                 continue
 194
 195             substituted = False
 196             for key in self.logSubstitutions.keys():
 197                 if line.find(key) != -1:
 198                     value = self.logSubstitutions[key]
 199                     value = value.replace("%log%", message)
 200                     if value != "@remove@":
 201                         result += line.replace(key, value) + "\n"
 202                     substituted = True
 203                     break
 204
 205             if not substituted:
 206                 result += line + "\n"
 207
 208         return result
 209
 210     def apply(self, id):
 211         print "Applying %s" % (os.popen("git-log --max-count=1 --pretty=oneline %s" % id).read())
 212         diff = os.popen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 213         filesToAdd = set()
 214         filesToDelete = set()
 215         for line in diff:
 216             modifier = line[0]
 217             path = line[1:].strip()
 218             if modifier == "M":
 219                 system("p4 edit %s" % path)
 220             elif modifier == "A":
 221                 filesToAdd.add(path)
 222                 if path in filesToDelete:
 223                     filesToDelete.remove(path)
 224             elif modifier == "D":
 225                 filesToDelete.add(path)
 226                 if path in filesToAdd:
 227                     filesToAdd.remove(path)
 228             else:
 229                 die("unknown modifier %s for %s" % (modifier, path))
 230
 231         if self.applyAsPatch:
 232             system("git-diff-tree -p --diff-filter=ACMRTUXB \"%s^\" \"%s\" | patch -p1" % (id, id))
 233         else:
 234             system("git-diff-files --name-only -z | git-update-index --remove -z --stdin")
 235             system("git cherry-pick --no-commit \"%s\"" % id)
 236
 237         for f in filesToAdd:
 238             system("p4 add %s" % f)
 239         for f in filesToDelete:
 240             system("p4 revert %s" % f)
 241             system("p4 delete %s" % f)
 242
 243         logMessage = extractLogMessageFromGitCommit(id)
 244         logMessage = logMessage.replace("\n", "\n\t")
 245         logMessage = logMessage[:-1]
 246
 247         template = os.popen("p4 change -o").read()
 248
 249         if self.interactive:
 250             submitTemplate = self.prepareLogMessage(template, logMessage)
 251             diff = os.popen("p4 diff -du ...").read()
 252
 253             for newFile in filesToAdd:
 254                 diff += "==== new file ====\n"
 255                 diff += "--- /dev/null\n"
 256                 diff += "+++ %s\n" % newFile
 257                 f = open(newFile, "r")
 258                 for line in f.readlines():
 259                     diff += "+" + line
 260                 f.close()
 261
 262             separatorLine = "######## everything below this line is just the diff #######\n"
 263
 264             response = "e"
 265             firstIteration = True
 266             while response == "e":
 267                 if not firstIteration:
 268                     response = raw_input("Do you want to submit this change (y/e/n)? ")
 269                 firstIteration = False
 270                 if response == "e":
 271                     [handle, fileName] = tempfile.mkstemp()
 272                     tmpFile = os.fdopen(handle, "w+")
 273                     tmpFile.write(submitTemplate + separatorLine + diff)
 274                     tmpFile.close()
 275                     editor = os.environ.get("EDITOR", "vi")
 276                     system(editor + " " + fileName)
 277                     tmpFile = open(fileName, "r")
 278                     message = tmpFile.read()
 279                     tmpFile.close()
 280                     os.remove(fileName)
 281                     submitTemplate = message[:message.index(separatorLine)]
 282
 283             if response == "y" or response == "yes":
 284                if self.dryRun:
 285                    print submitTemplate
 286                    raw_input("Press return to continue...")
 287                else:
 288                     pipe = os.popen("p4 submit -i", "w")
 289                     pipe.write(submitTemplate)
 290                     pipe.close()
 291             else:
 292                 print "Not submitting!"
 293                 self.interactive = False
 294         else:
 295             fileName = "submit.txt"
 296             file = open(fileName, "w+")
 297             file.write(self.prepareLogMessage(template, logMessage))
 298             file.close()
 299             print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 300
 301     def run(self, args):
 302         if self.reset:
 303             self.firstTime = True
 304
 305         if len(self.substFile) > 0:
 306             for line in open(self.substFile, "r").readlines():
 307                 tokens = line[:-1].split("=")
 308                 self.logSubstitutions[tokens[0]] = tokens[1]
 309
 310         if len(self.master) == 0:
 311             self.master = currentGitBranch()
 312             if len(self.master) == 0 or not os.path.exists("%s/refs/heads/%s" % (gitdir, self.master)):
 313                 die("Detecting current git branch failed!")
 314
 315         self.check()
 316         self.configFile = gitdir + "/p4-git-sync.cfg"
 317         self.config = shelve.open(self.configFile, writeback=True)
 318
 319         if self.firstTime:
 320             self.start()
 321
 322         commits = self.config.get("commits", [])
 323
 324         while len(commits) > 0:
 325             self.firstTime = False
 326             commit = commits[0]
 327             commits = commits[1:]
 328             self.config["commits"] = commits
 329             self.apply(commit)
 330             if not self.interactive:
 331                 break
 332
 333         self.config.close()
 334
 335         if len(commits) == 0:
 336             if self.firstTime:
 337                 print "No changes found to apply between %s and current HEAD" % self.origin
 338             else:
 339                 print "All changes applied!"
 340                 if not self.applyAsPatch:
 341                     print "Deleting temporary p4-sync branch and going back to %s" % self.master
 342                     system("git checkout %s" % self.master)
 343                     system("git branch -D p4-sync")
 344                     print "Cleaning out your perforce checkout by doing p4 edit ... ; p4 revert ..."
 345                     system("p4 edit ... >/dev/null")
 346                     system("p4 revert ... >/dev/null")
 347             os.remove(self.configFile)
 348
 349         return True
 350
 351 class GitSync(Command):
 352     def __init__(self):
 353         Command.__init__(self)
 354         self.options = [
 355                 optparse.make_option("--branch", dest="branch"),
 356                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 357                 optparse.make_option("--changesfile", dest="changesFile"),
 358                 optparse.make_option("--silent", dest="silent", action="store_true"),
 359                 optparse.make_option("--known-branches", dest="knownBranches"),
 360                 optparse.make_option("--cache", dest="doCache", action="store_true"),
 361                 optparse.make_option("--command-cache", dest="commandCache", action="store_true")
 362         ]
 363         self.description = """Imports from Perforce into a git repository.\n
 364     example:
 365     //depot/my/project/ -- to import the current head
 366     //depot/my/project/@all -- to import everything
 367     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 368
 369     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 370
 371         self.usage += " //depot/path[@revRange]"
 372
 373         self.dataCache = False
 374         self.commandCache = False
 375         self.silent = False
 376         self.knownBranches = Set()
 377         self.createdBranches = Set()
 378         self.committedChanges = Set()
 379         self.branch = "p4"
 380         self.detectBranches = False
 381         self.changesFile = ""
 382
 383     def p4File(self, depotPath):
 384         return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 385
 386     def extractFilesFromCommit(self, commit):
 387         files = []
 388         fnum = 0
 389         while commit.has_key("depotFile%s" % fnum):
 390             path =  commit["depotFile%s" % fnum]
 391             if not path.startswith(self.globalPrefix):
 392     #            if not self.silent:
 393     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.globalPrefix, change)
 394                 fnum = fnum + 1
 395                 continue
 396
 397             file = {}
 398             file["path"] = path
 399             file["rev"] = commit["rev%s" % fnum]
 400             file["action"] = commit["action%s" % fnum]
 401             file["type"] = commit["type%s" % fnum]
 402             files.append(file)
 403             fnum = fnum + 1
 404         return files
 405
 406     def isSubPathOf(self, first, second):
 407         if not first.startswith(second):
 408             return False
 409         if first == second:
 410             return True
 411         return first[len(second)] == "/"
 412
 413     def branchesForCommit(self, files):
 414         branches = Set()
 415
 416         for file in files:
 417             relativePath = file["path"][len(self.globalPrefix):]
 418             # strip off the filename
 419             relativePath = relativePath[0:relativePath.rfind("/")]
 420
 421     #        if len(branches) == 0:
 422     #            branches.add(relativePath)
 423     #            knownBranches.add(relativePath)
 424     #            continue
 425
 426             ###### this needs more testing :)
 427             knownBranch = False
 428             for branch in branches:
 429                 if relativePath == branch:
 430                     knownBranch = True
 431                     break
 432     #            if relativePath.startswith(branch):
 433                 if self.isSubPathOf(relativePath, branch):
 434                     knownBranch = True
 435                     break
 436     #            if branch.startswith(relativePath):
 437                 if self.isSubPathOf(branch, relativePath):
 438                     branches.remove(branch)
 439                     break
 440
 441             if knownBranch:
 442                 continue
 443
 444             for branch in knownBranches:
 445                 #if relativePath.startswith(branch):
 446                 if self.isSubPathOf(relativePath, branch):
 447                     if len(branches) == 0:
 448                         relativePath = branch
 449                     else:
 450                         knownBranch = True
 451                     break
 452
 453             if knownBranch:
 454                 continue
 455
 456             branches.add(relativePath)
 457             self.knownBranches.add(relativePath)
 458
 459         return branches
 460
 461     def findBranchParent(self, branchPrefix, files):
 462         for file in files:
 463             path = file["path"]
 464             if not path.startswith(branchPrefix):
 465                 continue
 466             action = file["action"]
 467             if action != "integrate" and action != "branch":
 468                 continue
 469             rev = file["rev"]
 470             depotPath = path + "#" + rev
 471
 472             log = p4CmdList("filelog \"%s\"" % depotPath)
 473             if len(log) != 1:
 474                 print "eek! I got confused by the filelog of %s" % depotPath
 475                 sys.exit(1);
 476
 477             log = log[0]
 478             if log["action0"] != action:
 479                 print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 480                 sys.exit(1);
 481
 482             branchAction = log["how0,0"]
 483     #        if branchAction == "branch into" or branchAction == "ignored":
 484     #            continue # ignore for branching
 485
 486             if not branchAction.endswith(" from"):
 487                 continue # ignore for branching
 488     #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 489     #            sys.exit(1);
 490
 491             source = log["file0,0"]
 492             if source.startswith(branchPrefix):
 493                 continue
 494
 495             lastSourceRev = log["erev0,0"]
 496
 497             sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 498             if len(sourceLog) != 1:
 499                 print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 500                 sys.exit(1);
 501             sourceLog = sourceLog[0]
 502
 503             relPath = source[len(self.globalPrefix):]
 504             # strip off the filename
 505             relPath = relPath[0:relPath.rfind("/")]
 506
 507             for branch in self.knownBranches:
 508                 if self.isSubPathOf(relPath, branch):
 509     #                print "determined parent branch branch %s due to change in file %s" % (branch, source)
 510                     return branch
 511     #            else:
 512     #                print "%s is not a subpath of branch %s" % (relPath, branch)
 513
 514         return ""
 515
 516     def commit(self, details, files, branch, branchPrefix, parent = "", merged = ""):
 517         epoch = details["time"]
 518         author = details["user"]
 519
 520         self.gitStream.write("commit %s\n" % branch)
 521     #    gitStream.write("mark :%s\n" % details["change"])
 522         self.committedChanges.add(int(details["change"]))
 523         committer = ""
 524         if author in self.users:
 525             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 526         else:
 527             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 528
 529         self.gitStream.write("committer %s\n" % committer)
 530
 531         self.gitStream.write("data <<EOT\n")
 532         self.gitStream.write(details["desc"])
 533         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 534         self.gitStream.write("EOT\n\n")
 535
 536         if len(parent) > 0:
 537             self.gitStream.write("from %s\n" % parent)
 538
 539         if len(merged) > 0:
 540             self.gitStream.write("merge %s\n" % merged)
 541
 542         for file in files:
 543             path = file["path"]
 544             if not path.startswith(branchPrefix):
 545     #            if not silent:
 546     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 547                 continue
 548             rev = file["rev"]
 549             depotPath = path + "#" + rev
 550             relPath = path[len(branchPrefix):]
 551             action = file["action"]
 552
 553             if file["type"] == "apple":
 554                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 555                 continue
 556
 557             if action == "delete":
 558                 self.gitStream.write("D %s\n" % relPath)
 559             else:
 560                 mode = 644
 561                 if file["type"].startswith("x"):
 562                     mode = 755
 563
 564                 data = self.p4File(depotPath)
 565
 566                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 567                 self.gitStream.write("data %s\n" % len(data))
 568                 self.gitStream.write(data)
 569                 self.gitStream.write("\n")
 570
 571         self.gitStream.write("\n")
 572
 573         self.lastChange = int(details["change"])
 574
 575     def extractFilesInCommitToBranch(self, files, branchPrefix):
 576         newFiles = []
 577
 578         for file in files:
 579             path = file["path"]
 580             if path.startswith(branchPrefix):
 581                 newFiles.append(file)
 582
 583         return newFiles
 584
 585     def findBranchSourceHeuristic(self, files, branch, branchPrefix):
 586         for file in files:
 587             action = file["action"]
 588             if action != "integrate" and action != "branch":
 589                 continue
 590             path = file["path"]
 591             rev = file["rev"]
 592             depotPath = path + "#" + rev
 593
 594             log = p4CmdList("filelog \"%s\"" % depotPath)
 595             if len(log) != 1:
 596                 print "eek! I got confused by the filelog of %s" % depotPath
 597                 sys.exit(1);
 598
 599             log = log[0]
 600             if log["action0"] != action:
 601                 print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 602                 sys.exit(1);
 603
 604             branchAction = log["how0,0"]
 605
 606             if not branchAction.endswith(" from"):
 607                 continue # ignore for branching
 608     #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 609     #            sys.exit(1);
 610
 611             source = log["file0,0"]
 612             if source.startswith(branchPrefix):
 613                 continue
 614
 615             lastSourceRev = log["erev0,0"]
 616
 617             sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 618             if len(sourceLog) != 1:
 619                 print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 620                 sys.exit(1);
 621             sourceLog = sourceLog[0]
 622
 623             relPath = source[len(self.globalPrefix):]
 624             # strip off the filename
 625             relPath = relPath[0:relPath.rfind("/")]
 626
 627             for candidate in self.knownBranches:
 628                 if self.isSubPathOf(relPath, candidate) and candidate != branch:
 629                     return candidate
 630
 631         return ""
 632
 633     def changeIsBranchMerge(self, sourceBranch, destinationBranch, change):
 634         sourceFiles = {}
 635         for file in p4CmdList("files %s...@%s" % (self.globalPrefix + sourceBranch + "/", change)):
 636             if file["action"] == "delete":
 637                 continue
 638             sourceFiles[file["depotFile"]] = file
 639
 640         destinationFiles = {}
 641         for file in p4CmdList("files %s...@%s" % (self.globalPrefix + destinationBranch + "/", change)):
 642             destinationFiles[file["depotFile"]] = file
 643
 644         for fileName in sourceFiles.keys():
 645             integrations = []
 646             deleted = False
 647             integrationCount = 0
 648             for integration in p4CmdList("integrated \"%s\"" % fileName):
 649                 toFile = integration["fromFile"] # yes, it's true, it's fromFile
 650                 if not toFile in destinationFiles:
 651                     continue
 652                 destFile = destinationFiles[toFile]
 653                 if destFile["action"] == "delete":
 654     #                print "file %s has been deleted in %s" % (fileName, toFile)
 655                     deleted = True
 656                     break
 657                 integrationCount += 1
 658                 if integration["how"] == "branch from":
 659                     continue
 660
 661                 if int(integration["change"]) == change:
 662                     integrations.append(integration)
 663                     continue
 664                 if int(integration["change"]) > change:
 665                     continue
 666
 667                 destRev = int(destFile["rev"])
 668
 669                 startRev = integration["startFromRev"][1:]
 670                 if startRev == "none":
 671                     startRev = 0
 672                 else:
 673                     startRev = int(startRev)
 674
 675                 endRev = integration["endFromRev"][1:]
 676                 if endRev == "none":
 677                     endRev = 0
 678                 else:
 679                     endRev = int(endRev)
 680
 681                 initialBranch = (destRev == 1 and integration["how"] != "branch into")
 682                 inRange = (destRev >= startRev and destRev <= endRev)
 683                 newer = (destRev > startRev and destRev > endRev)
 684
 685                 if initialBranch or inRange or newer:
 686                     integrations.append(integration)
 687
 688             if deleted:
 689                 continue
 690
 691             if len(integrations) == 0 and integrationCount > 1:
 692                 print "file %s was not integrated from %s into %s" % (fileName, sourceBranch, destinationBranch)
 693                 return False
 694
 695         return True
 696
 697     def getUserMap(self):
 698         self.users = {}
 699
 700         for output in p4CmdList("users"):
 701             if not output.has_key("User"):
 702                 continue
 703             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 704
 705     def run(self, args):
 706         self.branch = "refs/heads/" + self.branch
 707         self.globalPrefix = self.previousDepotPath = os.popen("git-repo-config --get p4.depotpath").read()
 708         if len(self.globalPrefix) != 0:
 709             self.globalPrefix = self.globalPrefix[:-1]
 710
 711         if len(args) == 0 and len(self.globalPrefix) != 0:
 712             if not self.silent:
 713                 print "[using previously specified depot path %s]" % self.globalPrefix
 714         elif len(args) != 1:
 715             return False
 716         else:
 717             if len(self.globalPrefix) != 0 and self.globalPrefix != args[0]:
 718                 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.globalPrefix, args[0])
 719                 sys.exit(1)
 720             self.globalPrefix = args[0]
 721
 722         self.changeRange = ""
 723         self.revision = ""
 724         self.users = {}
 725         self.initialParent = ""
 726         self.lastChange = 0
 727         self.initialTag = ""
 728
 729         if self.globalPrefix.find("@") != -1:
 730             atIdx = self.globalPrefix.index("@")
 731             self.changeRange = self.globalPrefix[atIdx:]
 732             if self.changeRange == "@all":
 733                 self.changeRange = ""
 734             elif self.changeRange.find(",") == -1:
 735                 self.revision = self.changeRange
 736                 self.changeRange = ""
 737             self.globalPrefix = self.globalPrefix[0:atIdx]
 738         elif self.globalPrefix.find("#") != -1:
 739             hashIdx = self.globalPrefix.index("#")
 740             self.revision = self.globalPrefix[hashIdx:]
 741             self.globalPrefix = self.globalPrefix[0:hashIdx]
 742         elif len(self.previousDepotPath) == 0:
 743             self.revision = "#head"
 744
 745         if self.globalPrefix.endswith("..."):
 746             self.globalPrefix = self.globalPrefix[:-3]
 747
 748         if not self.globalPrefix.endswith("/"):
 749             self.globalPrefix += "/"
 750
 751         self.getUserMap()
 752
 753         if len(self.changeRange) == 0:
 754             try:
 755                 sout, sin, serr = popen2.popen3("git-name-rev --tags `git-rev-parse %s`" % self.branch)
 756                 output = sout.read()
 757                 if output.endswith("\n"):
 758                     output = output[:-1]
 759                 tagIdx = output.index(" tags/p4/")
 760                 caretIdx = output.find("^")
 761                 endPos = len(output)
 762                 if caretIdx != -1:
 763                     endPos = caretIdx
 764                 self.rev = int(output[tagIdx + 9 : endPos]) + 1
 765                 self.changeRange = "@%s,#head" % self.rev
 766                 self.initialParent = os.popen("git-rev-parse %s" % self.branch).read()[:-1]
 767                 self.initialTag = "p4/%s" % (int(self.rev) - 1)
 768             except:
 769                 pass
 770
 771         self.tz = - time.timezone / 36
 772         tzsign = ("%s" % self.tz)[0]
 773         if tzsign != '+' and tzsign != '-':
 774             self.tz = "+" + ("%s" % self.tz)
 775
 776         self.gitOutput, self.gitStream, self.gitError = popen2.popen3("git-fast-import")
 777
 778         if len(self.revision) > 0:
 779             print "Doing initial import of %s from revision %s" % (self.globalPrefix, self.revision)
 780
 781             details = { "user" : "git perforce import user", "time" : int(time.time()) }
 782             details["desc"] = "Initial import of %s from the state at revision %s" % (self.globalPrefix, self.revision)
 783             details["change"] = self.revision
 784             newestRevision = 0
 785
 786             fileCnt = 0
 787             for info in p4CmdList("files %s...%s" % (self.globalPrefix, self.revision)):
 788                 change = int(info["change"])
 789                 if change > newestRevision:
 790                     newestRevision = change
 791
 792                 if info["action"] == "delete":
 793                     fileCnt = fileCnt + 1
 794                     continue
 795
 796                 for prop in [ "depotFile", "rev", "action", "type" ]:
 797                     details["%s%s" % (prop, fileCnt)] = info[prop]
 798
 799                 fileCnt = fileCnt + 1
 800
 801             details["change"] = newestRevision
 802
 803             try:
 804                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.globalPrefix)
 805             except IOError:
 806                 print self.gitError.read()
 807
 808         else:
 809             changes = []
 810
 811             if len(self.changesFile) > 0:
 812                 output = open(self.changesFile).readlines()
 813                 changeSet = Set()
 814                 for line in output:
 815                     changeSet.add(int(line))
 816
 817                 for change in changeSet:
 818                     changes.append(change)
 819
 820                 changes.sort()
 821             else:
 822                 output = os.popen("p4 changes %s...%s" % (self.globalPrefix, self.changeRange)).readlines()
 823
 824                 for line in output:
 825                     changeNum = line.split(" ")[1]
 826                     changes.append(changeNum)
 827
 828                 changes.reverse()
 829
 830             if len(changes) == 0:
 831                 if not self.silent:
 832                     print "no changes to import!"
 833                 sys.exit(1)
 834
 835             cnt = 1
 836             for change in changes:
 837                 description = p4Cmd("describe %s" % change)
 838
 839                 if not self.silent:
 840                     sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 841                     sys.stdout.flush()
 842                 cnt = cnt + 1
 843
 844                 try:
 845                     files = self.extractFilesFromCommit(description)
 846                     if self.detectBranches:
 847                         for branch in self.branchesForCommit(files):
 848                             self.knownBranches.add(branch)
 849                             branchPrefix = self.globalPrefix + branch + "/"
 850
 851                             filesForCommit = self.extractFilesInCommitToBranch(files, branchPrefix)
 852
 853                             merged = ""
 854                             parent = ""
 855                             ########### remove cnt!!!
 856                             if branch not in self.createdBranches and cnt > 2:
 857                                 self.createdBranches.add(branch)
 858                                 parent = self.findBranchParent(branchPrefix, files)
 859                                 if parent == branch:
 860                                     parent = ""
 861             #                    elif len(parent) > 0:
 862             #                        print "%s branched off of %s" % (branch, parent)
 863
 864                             if len(parent) == 0:
 865                                 merged = self.findBranchSourceHeuristic(filesForCommit, branch, branchPrefix)
 866                                 if len(merged) > 0:
 867                                     print "change %s could be a merge from %s into %s" % (description["change"], merged, branch)
 868                                     if not self.changeIsBranchMerge(merged, branch, int(description["change"])):
 869                                         merged = ""
 870
 871                             branch = "refs/heads/" + branch
 872                             if len(parent) > 0:
 873                                 parent = "refs/heads/" + parent
 874                             if len(merged) > 0:
 875                                 merged = "refs/heads/" + merged
 876                             self.commit(description, files, branch, branchPrefix, parent, merged)
 877                     else:
 878                         self.commit(description, files, self.branch, self.globalPrefix, self.initialParent)
 879                         self.initialParent = ""
 880                 except IOError:
 881                     print self.gitError.read()
 882                     sys.exit(1)
 883
 884         if not self.silent:
 885             print ""
 886
 887         self.gitStream.write("reset refs/tags/p4/%s\n" % self.lastChange)
 888         self.gitStream.write("from %s\n\n" % self.branch);
 889
 890
 891         self.gitStream.close()
 892         self.gitOutput.close()
 893         self.gitError.close()
 894
 895         os.popen("git-repo-config p4.depotpath %s" % self.globalPrefix).read()
 896         if len(self.initialTag) > 0:
 897             os.popen("git tag -d %s" % self.initialTag).read()
 898
 899         return True
 900
 901 class HelpFormatter(optparse.IndentedHelpFormatter):
 902     def __init__(self):
 903         optparse.IndentedHelpFormatter.__init__(self)
 904
 905     def format_description(self, description):
 906         if description:
 907             return description + "\n"
 908         else:
 909             return ""
 910
 911 def printUsage(commands):
 912     print "usage: %s <command> [options]" % sys.argv[0]
 913     print ""
 914     print "valid commands: %s" % ", ".join(commands)
 915     print ""
 916     print "Try %s <command> --help for command specific help." % sys.argv[0]
 917     print ""
 918
 919 commands = {
 920     "debug" : P4Debug(),
 921     "clean-tags" : P4CleanTags(),
 922     "submit" : P4Sync(),
 923     "sync" : GitSync()
 924 }
 925
 926 if len(sys.argv[1:]) == 0:
 927     printUsage(commands.keys())
 928     sys.exit(2)
 929
 930 cmd = ""
 931 cmdName = sys.argv[1]
 932 try:
 933     cmd = commands[cmdName]
 934 except KeyError:
 935     print "unknown command %s" % cmdName
 936     print ""
 937     printUsage(commands.keys())
 938     sys.exit(2)
 939
 940 options = cmd.options
 941 cmd.gitdir = gitdir
 942 options.append(optparse.make_option("--git-dir", dest="gitdir"))
 943
 944 parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
 945                                options,
 946                                description = cmd.description,
 947                                formatter = HelpFormatter())
 948
 949 (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
 950
 951 gitdir = cmd.gitdir
 952 if len(gitdir) == 0:
 953     gitdir = ".git"
 954     if not isValidGitDir(gitdir):
 955         cdup = os.popen("git-rev-parse --show-cdup").read()[:-1]
 956         if isValidGitDir(cdup + "/" + gitdir):
 957             os.chdir(cdup)
 958
 959 if not isValidGitDir(gitdir):
 960     if isValidGitDir(gitdir + "/.git"):
 961         gitdir += "/.git"
 962     else:
 963         die("fatal: cannot locate git repository at %s" % gitdir)
 964
 965 os.environ["GIT_DIR"] = gitdir
 966
 967 if not cmd.run(args):
 968     parser.print_help()
 969