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 <simon@lst.de>
   6 # Copyright: 2007 Simon Hausmann <simon@lst.de>
   7 #            2007 Trolltech ASA
   8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9 #
  10
  11 import optparse, sys, os, marshal, subprocess, shelve
  12 import tempfile, getopt, os.path, time, platform
  13 import re
  14
  15 verbose = False
  16
  17
  18 def p4_build_cmd(cmd):
  19     """Build a suitable p4 command line.
  20
  21     This consolidates building and returning a p4 command line into one
  22     location. It means that hooking into the environment, or other configuration
  23     can be done more easily.
  24     """
  25     real_cmd = "%s " % "p4"
  26
  27     user = gitConfig("git-p4.user")
  28     if len(user) > 0:
  29         real_cmd += "-u %s " % user
  30
  31     password = gitConfig("git-p4.password")
  32     if len(password) > 0:
  33         real_cmd += "-P %s " % password
  34
  35     port = gitConfig("git-p4.port")
  36     if len(port) > 0:
  37         real_cmd += "-p %s " % port
  38
  39     host = gitConfig("git-p4.host")
  40     if len(host) > 0:
  41         real_cmd += "-h %s " % host
  42
  43     client = gitConfig("git-p4.client")
  44     if len(client) > 0:
  45         real_cmd += "-c %s " % client
  46
  47     real_cmd += "%s" % (cmd)
  48     if verbose:
  49         print real_cmd
  50     return real_cmd
  51
  52 def chdir(dir):
  53     if os.name == 'nt':
  54         os.environ['PWD']=dir
  55     os.chdir(dir)
  56
  57 def die(msg):
  58     if verbose:
  59         raise Exception(msg)
  60     else:
  61         sys.stderr.write(msg + "\n")
  62         sys.exit(1)
  63
  64 def write_pipe(c, str):
  65     if verbose:
  66         sys.stderr.write('Writing pipe: %s\n' % c)
  67
  68     pipe = os.popen(c, 'w')
  69     val = pipe.write(str)
  70     if pipe.close():
  71         die('Command failed: %s' % c)
  72
  73     return val
  74
  75 def p4_write_pipe(c, str):
  76     real_cmd = p4_build_cmd(c)
  77     return write_pipe(real_cmd, str)
  78
  79 def read_pipe(c, ignore_error=False):
  80     if verbose:
  81         sys.stderr.write('Reading pipe: %s\n' % c)
  82
  83     pipe = os.popen(c, 'rb')
  84     val = pipe.read()
  85     if pipe.close() and not ignore_error:
  86         die('Command failed: %s' % c)
  87
  88     return val
  89
  90 def p4_read_pipe(c, ignore_error=False):
  91     real_cmd = p4_build_cmd(c)
  92     return read_pipe(real_cmd, ignore_error)
  93
  94 def read_pipe_lines(c):
  95     if verbose:
  96         sys.stderr.write('Reading pipe: %s\n' % c)
  97     ## todo: check return status
  98     pipe = os.popen(c, 'rb')
  99     val = pipe.readlines()
 100     if pipe.close():
 101         die('Command failed: %s' % c)
 102
 103     return val
 104
 105 def p4_read_pipe_lines(c):
 106     """Specifically invoke p4 on the command supplied. """
 107     real_cmd = p4_build_cmd(c)
 108     return read_pipe_lines(real_cmd)
 109
 110 def system(cmd):
 111     if verbose:
 112         sys.stderr.write("executing %s\n" % cmd)
 113     if os.system(cmd) != 0:
 114         die("command failed: %s" % cmd)
 115
 116 def p4_system(cmd):
 117     """Specifically invoke p4 as the system command. """
 118     real_cmd = p4_build_cmd(cmd)
 119     return system(real_cmd)
 120
 121 def isP4Exec(kind):
 122     """Determine if a Perforce 'kind' should have execute permission
 123
 124     'p4 help filetypes' gives a list of the types.  If it starts with 'x',
 125     or x follows one of a few letters.  Otherwise, if there is an 'x' after
 126     a plus sign, it is also executable"""
 127     return (re.search(r"(^[cku]?x)|\+.*x", kind) != None)
 128
 129 def setP4ExecBit(file, mode):
 130     # Reopens an already open file and changes the execute bit to match
 131     # the execute bit setting in the passed in mode.
 132
 133     p4Type = "+x"
 134
 135     if not isModeExec(mode):
 136         p4Type = getP4OpenedType(file)
 137         p4Type = re.sub('^([cku]?)x(.*)', '\\1\\2', p4Type)
 138         p4Type = re.sub('(.*?\+.*?)x(.*?)', '\\1\\2', p4Type)
 139         if p4Type[-1] == "+":
 140             p4Type = p4Type[0:-1]
 141
 142     p4_system("reopen -t %s %s" % (p4Type, file))
 143
 144 def getP4OpenedType(file):
 145     # Returns the perforce file type for the given file.
 146
 147     result = p4_read_pipe("opened %s" % file)
 148     match = re.match(".*\((.+)\)\r?$", result)
 149     if match:
 150         return match.group(1)
 151     else:
 152         die("Could not determine file type for %s (result: '%s')" % (file, result))
 153
 154 def diffTreePattern():
 155     # This is a simple generator for the diff tree regex pattern. This could be
 156     # a class variable if this and parseDiffTreeEntry were a part of a class.
 157     pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)')
 158     while True:
 159         yield pattern
 160
 161 def parseDiffTreeEntry(entry):
 162     """Parses a single diff tree entry into its component elements.
 163
 164     See git-diff-tree(1) manpage for details about the format of the diff
 165     output. This method returns a dictionary with the following elements:
 166
 167     src_mode - The mode of the source file
 168     dst_mode - The mode of the destination file
 169     src_sha1 - The sha1 for the source file
 170     dst_sha1 - The sha1 fr the destination file
 171     status - The one letter status of the diff (i.e. 'A', 'M', 'D', etc)
 172     status_score - The score for the status (applicable for 'C' and 'R'
 173                    statuses). This is None if there is no score.
 174     src - The path for the source file.
 175     dst - The path for the destination file. This is only present for
 176           copy or renames. If it is not present, this is None.
 177
 178     If the pattern is not matched, None is returned."""
 179
 180     match = diffTreePattern().next().match(entry)
 181     if match:
 182         return {
 183             'src_mode': match.group(1),
 184             'dst_mode': match.group(2),
 185             'src_sha1': match.group(3),
 186             'dst_sha1': match.group(4),
 187             'status': match.group(5),
 188             'status_score': match.group(6),
 189             'src': match.group(7),
 190             'dst': match.group(10)
 191         }
 192     return None
 193
 194 def isModeExec(mode):
 195     # Returns True if the given git mode represents an executable file,
 196     # otherwise False.
 197     return mode[-3:] == "755"
 198
 199 def isModeExecChanged(src_mode, dst_mode):
 200     return isModeExec(src_mode) != isModeExec(dst_mode)
 201
 202 def p4CmdList(cmd, stdin=None, stdin_mode='w+b', cb=None):
 203     cmd = p4_build_cmd("-G %s" % (cmd))
 204     if verbose:
 205         sys.stderr.write("Opening pipe: %s\n" % cmd)
 206
 207     # Use a temporary file to avoid deadlocks without
 208     # subprocess.communicate(), which would put another copy
 209     # of stdout into memory.
 210     stdin_file = None
 211     if stdin is not None:
 212         stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
 213         stdin_file.write(stdin)
 214         stdin_file.flush()
 215         stdin_file.seek(0)
 216
 217     p4 = subprocess.Popen(cmd, shell=True,
 218                           stdin=stdin_file,
 219                           stdout=subprocess.PIPE)
 220
 221     result = []
 222     try:
 223         while True:
 224             entry = marshal.load(p4.stdout)
 225             if cb is not None:
 226                 cb(entry)
 227             else:
 228                 result.append(entry)
 229     except EOFError:
 230         pass
 231     exitCode = p4.wait()
 232     if exitCode != 0:
 233         entry = {}
 234         entry["p4ExitCode"] = exitCode
 235         result.append(entry)
 236
 237     return result
 238
 239 def p4Cmd(cmd):
 240     list = p4CmdList(cmd)
 241     result = {}
 242     for entry in list:
 243         result.update(entry)
 244     return result;
 245
 246 def p4Where(depotPath):
 247     if not depotPath.endswith("/"):
 248         depotPath += "/"
 249     depotPath = depotPath + "..."
 250     outputList = p4CmdList("where %s" % depotPath)
 251     output = None
 252     for entry in outputList:
 253         if "depotFile" in entry:
 254             if entry["depotFile"] == depotPath:
 255                 output = entry
 256                 break
 257         elif "data" in entry:
 258             data = entry.get("data")
 259             space = data.find(" ")
 260             if data[:space] == depotPath:
 261                 output = entry
 262                 break
 263     if output == None:
 264         return ""
 265     if output["code"] == "error":
 266         return ""
 267     clientPath = ""
 268     if "path" in output:
 269         clientPath = output.get("path")
 270     elif "data" in output:
 271         data = output.get("data")
 272         lastSpace = data.rfind(" ")
 273         clientPath = data[lastSpace + 1:]
 274
 275     if clientPath.endswith("..."):
 276         clientPath = clientPath[:-3]
 277     return clientPath
 278
 279 def currentGitBranch():
 280     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 281
 282 def isValidGitDir(path):
 283     if (os.path.exists(path + "/HEAD")
 284         and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 285         return True;
 286     return False
 287
 288 def parseRevision(ref):
 289     return read_pipe("git rev-parse %s" % ref).strip()
 290
 291 def extractLogMessageFromGitCommit(commit):
 292     logMessage = ""
 293
 294     ## fixme: title is first line of commit, not 1st paragraph.
 295     foundTitle = False
 296     for log in read_pipe_lines("git cat-file commit %s" % commit):
 297        if not foundTitle:
 298            if len(log) == 1:
 299                foundTitle = True
 300            continue
 301
 302        logMessage += log
 303     return logMessage
 304
 305 def extractSettingsGitLog(log):
 306     values = {}
 307     for line in log.split("\n"):
 308         line = line.strip()
 309         m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 310         if not m:
 311             continue
 312
 313         assignments = m.group(1).split (':')
 314         for a in assignments:
 315             vals = a.split ('=')
 316             key = vals[0].strip()
 317             val = ('='.join (vals[1:])).strip()
 318             if val.endswith ('\"') and val.startswith('"'):
 319                 val = val[1:-1]
 320
 321             values[key] = val
 322
 323     paths = values.get("depot-paths")
 324     if not paths:
 325         paths = values.get("depot-path")
 326     if paths:
 327         values['depot-paths'] = paths.split(',')
 328     return values
 329
 330 def gitBranchExists(branch):
 331     proc = subprocess.Popen(["git", "rev-parse", branch],
 332                             stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 333     return proc.wait() == 0;
 334
 335 _gitConfig = {}
 336 def gitConfig(key, args = None): # set args to "--bool", for instance
 337     if not _gitConfig.has_key(key):
 338         argsFilter = ""
 339         if args != None:
 340             argsFilter = "%s " % args
 341         cmd = "git config %s%s" % (argsFilter, key)
 342         _gitConfig[key] = read_pipe(cmd, ignore_error=True).strip()
 343     return _gitConfig[key]
 344
 345 def gitConfigList(key):
 346     if not _gitConfig.has_key(key):
 347         _gitConfig[key] = read_pipe("git config --get-all %s" % key, ignore_error=True).strip().split(os.linesep)
 348     return _gitConfig[key]
 349
 350 def p4BranchesInGit(branchesAreInRemotes = True):
 351     branches = {}
 352
 353     cmdline = "git rev-parse --symbolic "
 354     if branchesAreInRemotes:
 355         cmdline += " --remotes"
 356     else:
 357         cmdline += " --branches"
 358
 359     for line in read_pipe_lines(cmdline):
 360         line = line.strip()
 361
 362         ## only import to p4/
 363         if not line.startswith('p4/') or line == "p4/HEAD":
 364             continue
 365         branch = line
 366
 367         # strip off p4
 368         branch = re.sub ("^p4/", "", line)
 369
 370         branches[branch] = parseRevision(line)
 371     return branches
 372
 373 def findUpstreamBranchPoint(head = "HEAD"):
 374     branches = p4BranchesInGit()
 375     # map from depot-path to branch name
 376     branchByDepotPath = {}
 377     for branch in branches.keys():
 378         tip = branches[branch]
 379         log = extractLogMessageFromGitCommit(tip)
 380         settings = extractSettingsGitLog(log)
 381         if settings.has_key("depot-paths"):
 382             paths = ",".join(settings["depot-paths"])
 383             branchByDepotPath[paths] = "remotes/p4/" + branch
 384
 385     settings = None
 386     parent = 0
 387     while parent < 65535:
 388         commit = head + "~%s" % parent
 389         log = extractLogMessageFromGitCommit(commit)
 390         settings = extractSettingsGitLog(log)
 391         if settings.has_key("depot-paths"):
 392             paths = ",".join(settings["depot-paths"])
 393             if branchByDepotPath.has_key(paths):
 394                 return [branchByDepotPath[paths], settings]
 395
 396         parent = parent + 1
 397
 398     return ["", settings]
 399
 400 def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True):
 401     if not silent:
 402         print ("Creating/updating branch(es) in %s based on origin branch(es)"
 403                % localRefPrefix)
 404
 405     originPrefix = "origin/p4/"
 406
 407     for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 408         line = line.strip()
 409         if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
 410             continue
 411
 412         headName = line[len(originPrefix):]
 413         remoteHead = localRefPrefix + headName
 414         originHead = line
 415
 416         original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 417         if (not original.has_key('depot-paths')
 418             or not original.has_key('change')):
 419             continue
 420
 421         update = False
 422         if not gitBranchExists(remoteHead):
 423             if verbose:
 424                 print "creating %s" % remoteHead
 425             update = True
 426         else:
 427             settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 428             if settings.has_key('change') > 0:
 429                 if settings['depot-paths'] == original['depot-paths']:
 430                     originP4Change = int(original['change'])
 431                     p4Change = int(settings['change'])
 432                     if originP4Change > p4Change:
 433                         print ("%s (%s) is newer than %s (%s). "
 434                                "Updating p4 branch from origin."
 435                                % (originHead, originP4Change,
 436                                   remoteHead, p4Change))
 437                         update = True
 438                 else:
 439                     print ("Ignoring: %s was imported from %s while "
 440                            "%s was imported from %s"
 441                            % (originHead, ','.join(original['depot-paths']),
 442                               remoteHead, ','.join(settings['depot-paths'])))
 443
 444         if update:
 445             system("git update-ref %s %s" % (remoteHead, originHead))
 446
 447 def originP4BranchesExist():
 448         return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
 449
 450 def p4ChangesForPaths(depotPaths, changeRange):
 451     assert depotPaths
 452     output = p4_read_pipe_lines("changes " + ' '.join (["%s...%s" % (p, changeRange)
 453                                                         for p in depotPaths]))
 454
 455     changes = {}
 456     for line in output:
 457         changeNum = int(line.split(" ")[1])
 458         changes[changeNum] = True
 459
 460     changelist = changes.keys()
 461     changelist.sort()
 462     return changelist
 463
 464 def p4PathStartsWith(path, prefix):
 465     # This method tries to remedy a potential mixed-case issue:
 466     #
 467     # If UserA adds  //depot/DirA/file1
 468     # and UserB adds //depot/dira/file2
 469     #
 470     # we may or may not have a problem. If you have core.ignorecase=true,
 471     # we treat DirA and dira as the same directory
 472     ignorecase = gitConfig("core.ignorecase", "--bool") == "true"
 473     if ignorecase:
 474         return path.lower().startswith(prefix.lower())
 475     return path.startswith(prefix)
 476
 477 class Command:
 478     def __init__(self):
 479         self.usage = "usage: %prog [options]"
 480         self.needsGit = True
 481
 482 class P4UserMap:
 483     def __init__(self):
 484         self.userMapFromPerforceServer = False
 485
 486     def getUserCacheFilename(self):
 487         home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
 488         return home + "/.gitp4-usercache.txt"
 489
 490     def getUserMapFromPerforceServer(self):
 491         if self.userMapFromPerforceServer:
 492             return
 493         self.users = {}
 494         self.emails = {}
 495
 496         for output in p4CmdList("users"):
 497             if not output.has_key("User"):
 498                 continue
 499             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 500             self.emails[output["Email"]] = output["User"]
 501
 502
 503         s = ''
 504         for (key, val) in self.users.items():
 505             s += "%s\t%s\n" % (key.expandtabs(1), val.expandtabs(1))
 506
 507         open(self.getUserCacheFilename(), "wb").write(s)
 508         self.userMapFromPerforceServer = True
 509
 510     def loadUserMapFromCache(self):
 511         self.users = {}
 512         self.userMapFromPerforceServer = False
 513         try:
 514             cache = open(self.getUserCacheFilename(), "rb")
 515             lines = cache.readlines()
 516             cache.close()
 517             for line in lines:
 518                 entry = line.strip().split("\t")
 519                 self.users[entry[0]] = entry[1]
 520         except IOError:
 521             self.getUserMapFromPerforceServer()
 522
 523 class P4Debug(Command):
 524     def __init__(self):
 525         Command.__init__(self)
 526         self.options = [
 527             optparse.make_option("--verbose", dest="verbose", action="store_true",
 528                                  default=False),
 529             ]
 530         self.description = "A tool to debug the output of p4 -G."
 531         self.needsGit = False
 532         self.verbose = False
 533
 534     def run(self, args):
 535         j = 0
 536         for output in p4CmdList(" ".join(args)):
 537             print 'Element: %d' % j
 538             j += 1
 539             print output
 540         return True
 541
 542 class P4RollBack(Command):
 543     def __init__(self):
 544         Command.__init__(self)
 545         self.options = [
 546             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 547             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 548         ]
 549         self.description = "A tool to debug the multi-branch import. Don't use :)"
 550         self.verbose = False
 551         self.rollbackLocalBranches = False
 552
 553     def run(self, args):
 554         if len(args) != 1:
 555             return False
 556         maxChange = int(args[0])
 557
 558         if "p4ExitCode" in p4Cmd("changes -m 1"):
 559             die("Problems executing p4");
 560
 561         if self.rollbackLocalBranches:
 562             refPrefix = "refs/heads/"
 563             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 564         else:
 565             refPrefix = "refs/remotes/"
 566             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 567
 568         for line in lines:
 569             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 570                 line = line.strip()
 571                 ref = refPrefix + line
 572                 log = extractLogMessageFromGitCommit(ref)
 573                 settings = extractSettingsGitLog(log)
 574
 575                 depotPaths = settings['depot-paths']
 576                 change = settings['change']
 577
 578                 changed = False
 579
 580                 if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 581                                                            for p in depotPaths]))) == 0:
 582                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 583                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 584                     continue
 585
 586                 while change and int(change) > maxChange:
 587                     changed = True
 588                     if self.verbose:
 589                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 590                     system("git update-ref %s \"%s^\"" % (ref, ref))
 591                     log = extractLogMessageFromGitCommit(ref)
 592                     settings =  extractSettingsGitLog(log)
 593
 594
 595                     depotPaths = settings['depot-paths']
 596                     change = settings['change']
 597
 598                 if changed:
 599                     print "%s rewound to %s" % (ref, change)
 600
 601         return True
 602
 603 class P4Submit(Command, P4UserMap):
 604     def __init__(self):
 605         Command.__init__(self)
 606         P4UserMap.__init__(self)
 607         self.options = [
 608                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 609                 optparse.make_option("--origin", dest="origin"),
 610                 optparse.make_option("-M", dest="detectRenames", action="store_true"),
 611                 # preserve the user, requires relevant p4 permissions
 612                 optparse.make_option("--preserve-user", dest="preserveUser", action="store_true"),
 613         ]
 614         self.description = "Submit changes from git to the perforce depot."
 615         self.usage += " [name of git branch to submit into perforce depot]"
 616         self.interactive = True
 617         self.origin = ""
 618         self.detectRenames = False
 619         self.verbose = False
 620         self.preserveUser = gitConfig("git-p4.preserveUser").lower() == "true"
 621         self.isWindows = (platform.system() == "Windows")
 622         self.myP4UserId = None
 623
 624     def check(self):
 625         if len(p4CmdList("opened ...")) > 0:
 626             die("You have files opened with perforce! Close them before starting the sync.")
 627
 628     # replaces everything between 'Description:' and the next P4 submit template field with the
 629     # commit message
 630     def prepareLogMessage(self, template, message):
 631         result = ""
 632
 633         inDescriptionSection = False
 634
 635         for line in template.split("\n"):
 636             if line.startswith("#"):
 637                 result += line + "\n"
 638                 continue
 639
 640             if inDescriptionSection:
 641                 if line.startswith("Files:") or line.startswith("Jobs:"):
 642                     inDescriptionSection = False
 643                 else:
 644                     continue
 645             else:
 646                 if line.startswith("Description:"):
 647                     inDescriptionSection = True
 648                     line += "\n"
 649                     for messageLine in message.split("\n"):
 650                         line += "\t" + messageLine + "\n"
 651
 652             result += line + "\n"
 653
 654         return result
 655
 656     def p4UserForCommit(self,id):
 657         # Return the tuple (perforce user,git email) for a given git commit id
 658         self.getUserMapFromPerforceServer()
 659         gitEmail = read_pipe("git log --max-count=1 --format='%%ae' %s" % id)
 660         gitEmail = gitEmail.strip()
 661         if not self.emails.has_key(gitEmail):
 662             return (None,gitEmail)
 663         else:
 664             return (self.emails[gitEmail],gitEmail)
 665
 666     def checkValidP4Users(self,commits):
 667         # check if any git authors cannot be mapped to p4 users
 668         for id in commits:
 669             (user,email) = self.p4UserForCommit(id)
 670             if not user:
 671                 msg = "Cannot find p4 user for email %s in commit %s." % (email, id)
 672                 if gitConfig('git-p4.allowMissingP4Users').lower() == "true":
 673                     print "%s" % msg
 674                 else:
 675                     die("Error: %s\nSet git-p4.allowMissingP4Users to true to allow this." % msg)
 676
 677     def lastP4Changelist(self):
 678         # Get back the last changelist number submitted in this client spec. This
 679         # then gets used to patch up the username in the change. If the same
 680         # client spec is being used by multiple processes then this might go
 681         # wrong.
 682         results = p4CmdList("client -o")        # find the current client
 683         client = None
 684         for r in results:
 685             if r.has_key('Client'):
 686                 client = r['Client']
 687                 break
 688         if not client:
 689             die("could not get client spec")
 690         results = p4CmdList("changes -c %s -m 1" % client)
 691         for r in results:
 692             if r.has_key('change'):
 693                 return r['change']
 694         die("Could not get changelist number for last submit - cannot patch up user details")
 695
 696     def modifyChangelistUser(self, changelist, newUser):
 697         # fixup the user field of a changelist after it has been submitted.
 698         changes = p4CmdList("change -o %s" % changelist)
 699         if len(changes) != 1:
 700             die("Bad output from p4 change modifying %s to user %s" %
 701                 (changelist, newUser))
 702
 703         c = changes[0]
 704         if c['User'] == newUser: return   # nothing to do
 705         c['User'] = newUser
 706         input = marshal.dumps(c)
 707
 708         result = p4CmdList("change -f -i", stdin=input)
 709         for r in result:
 710             if r.has_key('code'):
 711                 if r['code'] == 'error':
 712                     die("Could not modify user field of changelist %s to %s:%s" % (changelist, newUser, r['data']))
 713             if r.has_key('data'):
 714                 print("Updated user field for changelist %s to %s" % (changelist, newUser))
 715                 return
 716         die("Could not modify user field of changelist %s to %s" % (changelist, newUser))
 717
 718     def canChangeChangelists(self):
 719         # check to see if we have p4 admin or super-user permissions, either of
 720         # which are required to modify changelists.
 721         results = p4CmdList("protects %s" % self.depotPath)
 722         for r in results:
 723             if r.has_key('perm'):
 724                 if r['perm'] == 'admin':
 725                     return 1
 726                 if r['perm'] == 'super':
 727                     return 1
 728         return 0
 729
 730     def p4UserId(self):
 731         if self.myP4UserId:
 732             return self.myP4UserId
 733
 734         results = p4CmdList("user -o")
 735         for r in results:
 736             if r.has_key('User'):
 737                 self.myP4UserId = r['User']
 738                 return r['User']
 739         die("Could not find your p4 user id")
 740
 741     def p4UserIsMe(self, p4User):
 742         # return True if the given p4 user is actually me
 743         me = self.p4UserId()
 744         if not p4User or p4User != me:
 745             return False
 746         else:
 747             return True
 748
 749     def prepareSubmitTemplate(self):
 750         # remove lines in the Files section that show changes to files outside the depot path we're committing into
 751         template = ""
 752         inFilesSection = False
 753         for line in p4_read_pipe_lines("change -o"):
 754             if line.endswith("\r\n"):
 755                 line = line[:-2] + "\n"
 756             if inFilesSection:
 757                 if line.startswith("\t"):
 758                     # path starts and ends with a tab
 759                     path = line[1:]
 760                     lastTab = path.rfind("\t")
 761                     if lastTab != -1:
 762                         path = path[:lastTab]
 763                         if not p4PathStartsWith(path, self.depotPath):
 764                             continue
 765                 else:
 766                     inFilesSection = False
 767             else:
 768                 if line.startswith("Files:"):
 769                     inFilesSection = True
 770
 771             template += line
 772
 773         return template
 774
 775     def applyCommit(self, id):
 776         print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 777
 778         (p4User, gitEmail) = self.p4UserForCommit(id)
 779
 780         if not self.detectRenames:
 781             # If not explicitly set check the config variable
 782             self.detectRenames = gitConfig("git-p4.detectRenames")
 783
 784         if self.detectRenames.lower() == "false" or self.detectRenames == "":
 785             diffOpts = ""
 786         elif self.detectRenames.lower() == "true":
 787             diffOpts = "-M"
 788         else:
 789             diffOpts = "-M%s" % self.detectRenames
 790
 791         detectCopies = gitConfig("git-p4.detectCopies")
 792         if detectCopies.lower() == "true":
 793             diffOpts += " -C"
 794         elif detectCopies != "" and detectCopies.lower() != "false":
 795             diffOpts += " -C%s" % detectCopies
 796
 797         if gitConfig("git-p4.detectCopiesHarder", "--bool") == "true":
 798             diffOpts += " --find-copies-harder"
 799
 800         diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id))
 801         filesToAdd = set()
 802         filesToDelete = set()
 803         editedFiles = set()
 804         filesToChangeExecBit = {}
 805         for line in diff:
 806             diff = parseDiffTreeEntry(line)
 807             modifier = diff['status']
 808             path = diff['src']
 809             if modifier == "M":
 810                 p4_system("edit \"%s\"" % path)
 811                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 812                     filesToChangeExecBit[path] = diff['dst_mode']
 813                 editedFiles.add(path)
 814             elif modifier == "A":
 815                 filesToAdd.add(path)
 816                 filesToChangeExecBit[path] = diff['dst_mode']
 817                 if path in filesToDelete:
 818                     filesToDelete.remove(path)
 819             elif modifier == "D":
 820                 filesToDelete.add(path)
 821                 if path in filesToAdd:
 822                     filesToAdd.remove(path)
 823             elif modifier == "C":
 824                 src, dest = diff['src'], diff['dst']
 825                 p4_system("integrate -Dt \"%s\" \"%s\"" % (src, dest))
 826                 if diff['src_sha1'] != diff['dst_sha1']:
 827                     p4_system("edit \"%s\"" % (dest))
 828                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 829                     p4_system("edit \"%s\"" % (dest))
 830                     filesToChangeExecBit[dest] = diff['dst_mode']
 831                 os.unlink(dest)
 832                 editedFiles.add(dest)
 833             elif modifier == "R":
 834                 src, dest = diff['src'], diff['dst']
 835                 p4_system("integrate -Dt \"%s\" \"%s\"" % (src, dest))
 836                 if diff['src_sha1'] != diff['dst_sha1']:
 837                     p4_system("edit \"%s\"" % (dest))
 838                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 839                     p4_system("edit \"%s\"" % (dest))
 840                     filesToChangeExecBit[dest] = diff['dst_mode']
 841                 os.unlink(dest)
 842                 editedFiles.add(dest)
 843                 filesToDelete.add(src)
 844             else:
 845                 die("unknown modifier %s for %s" % (modifier, path))
 846
 847         diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 848         patchcmd = diffcmd + " | git apply "
 849         tryPatchCmd = patchcmd + "--check -"
 850         applyPatchCmd = patchcmd + "--check --apply -"
 851
 852         if os.system(tryPatchCmd) != 0:
 853             print "Unfortunately applying the change failed!"
 854             print "What do you want to do?"
 855             response = "x"
 856             while response != "s" and response != "a" and response != "w":
 857                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 858                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 859             if response == "s":
 860                 print "Skipping! Good luck with the next patches..."
 861                 for f in editedFiles:
 862                     p4_system("revert \"%s\"" % f);
 863                 for f in filesToAdd:
 864                     system("rm %s" %f)
 865                 return
 866             elif response == "a":
 867                 os.system(applyPatchCmd)
 868                 if len(filesToAdd) > 0:
 869                     print "You may also want to call p4 add on the following files:"
 870                     print " ".join(filesToAdd)
 871                 if len(filesToDelete):
 872                     print "The following files should be scheduled for deletion with p4 delete:"
 873                     print " ".join(filesToDelete)
 874                 die("Please resolve and submit the conflict manually and "
 875                     + "continue afterwards with git-p4 submit --continue")
 876             elif response == "w":
 877                 system(diffcmd + " > patch.txt")
 878                 print "Patch saved to patch.txt in %s !" % self.clientPath
 879                 die("Please resolve and submit the conflict manually and "
 880                     "continue afterwards with git-p4 submit --continue")
 881
 882         system(applyPatchCmd)
 883
 884         for f in filesToAdd:
 885             p4_system("add \"%s\"" % f)
 886         for f in filesToDelete:
 887             p4_system("revert \"%s\"" % f)
 888             p4_system("delete \"%s\"" % f)
 889
 890         # Set/clear executable bits
 891         for f in filesToChangeExecBit.keys():
 892             mode = filesToChangeExecBit[f]
 893             setP4ExecBit(f, mode)
 894
 895         logMessage = extractLogMessageFromGitCommit(id)
 896         logMessage = logMessage.strip()
 897
 898         template = self.prepareSubmitTemplate()
 899
 900         if self.interactive:
 901             submitTemplate = self.prepareLogMessage(template, logMessage)
 902
 903             if self.preserveUser:
 904                submitTemplate = submitTemplate + ("\n######## Actual user %s, modified after commit\n" % p4User)
 905
 906             if os.environ.has_key("P4DIFF"):
 907                 del(os.environ["P4DIFF"])
 908             diff = ""
 909             for editedFile in editedFiles:
 910                 diff += p4_read_pipe("diff -du %r" % editedFile)
 911
 912             newdiff = ""
 913             for newFile in filesToAdd:
 914                 newdiff += "==== new file ====\n"
 915                 newdiff += "--- /dev/null\n"
 916                 newdiff += "+++ %s\n" % newFile
 917                 f = open(newFile, "r")
 918                 for line in f.readlines():
 919                     newdiff += "+" + line
 920                 f.close()
 921
 922             if self.checkAuthorship and not self.p4UserIsMe(p4User):
 923                 submitTemplate += "######## git author %s does not match your p4 account.\n" % gitEmail
 924                 submitTemplate += "######## Use git-p4 option --preserve-user to modify authorship\n"
 925                 submitTemplate += "######## Use git-p4 config git-p4.skipUserNameCheck hides this message.\n"
 926
 927             separatorLine = "######## everything below this line is just the diff #######\n"
 928
 929             [handle, fileName] = tempfile.mkstemp()
 930             tmpFile = os.fdopen(handle, "w+")
 931             if self.isWindows:
 932                 submitTemplate = submitTemplate.replace("\n", "\r\n")
 933                 separatorLine = separatorLine.replace("\n", "\r\n")
 934                 newdiff = newdiff.replace("\n", "\r\n")
 935             tmpFile.write(submitTemplate + separatorLine + diff + newdiff)
 936             tmpFile.close()
 937             mtime = os.stat(fileName).st_mtime
 938             if os.environ.has_key("P4EDITOR"):
 939                 editor = os.environ.get("P4EDITOR")
 940             else:
 941                 editor = read_pipe("git var GIT_EDITOR").strip()
 942             system(editor + " " + fileName)
 943
 944             if gitConfig("git-p4.skipSubmitEditCheck") == "true":
 945                 checkModTime = False
 946             else:
 947                 checkModTime = True
 948
 949             response = "y"
 950             if checkModTime and (os.stat(fileName).st_mtime <= mtime):
 951                 response = "x"
 952                 while response != "y" and response != "n":
 953                     response = raw_input("Submit template unchanged. Submit anyway? [y]es, [n]o (skip this patch) ")
 954
 955             if response == "y":
 956                 tmpFile = open(fileName, "rb")
 957                 message = tmpFile.read()
 958                 tmpFile.close()
 959                 submitTemplate = message[:message.index(separatorLine)]
 960                 if self.isWindows:
 961                     submitTemplate = submitTemplate.replace("\r\n", "\n")
 962                 p4_write_pipe("submit -i", submitTemplate)
 963
 964                 if self.preserveUser:
 965                     if p4User:
 966                         # Get last changelist number. Cannot easily get it from
 967                         # the submit command output as the output is unmarshalled.
 968                         changelist = self.lastP4Changelist()
 969                         self.modifyChangelistUser(changelist, p4User)
 970
 971             else:
 972                 for f in editedFiles:
 973                     p4_system("revert \"%s\"" % f);
 974                 for f in filesToAdd:
 975                     p4_system("revert \"%s\"" % f);
 976                     system("rm %s" %f)
 977
 978             os.remove(fileName)
 979         else:
 980             fileName = "submit.txt"
 981             file = open(fileName, "w+")
 982             file.write(self.prepareLogMessage(template, logMessage))
 983             file.close()
 984             print ("Perforce submit template written as %s. "
 985                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 986                    % (fileName, fileName))
 987
 988     def run(self, args):
 989         if len(args) == 0:
 990             self.master = currentGitBranch()
 991             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 992                 die("Detecting current git branch failed!")
 993         elif len(args) == 1:
 994             self.master = args[0]
 995         else:
 996             return False
 997
 998         allowSubmit = gitConfig("git-p4.allowSubmit")
 999         if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","):
1000             die("%s is not in git-p4.allowSubmit" % self.master)
1001
1002         [upstream, settings] = findUpstreamBranchPoint()
1003         self.depotPath = settings['depot-paths'][0]
1004         if len(self.origin) == 0:
1005             self.origin = upstream
1006
1007         if self.preserveUser:
1008             if not self.canChangeChangelists():
1009                 die("Cannot preserve user names without p4 super-user or admin permissions")
1010
1011         if self.verbose:
1012             print "Origin branch is " + self.origin
1013
1014         if len(self.depotPath) == 0:
1015             print "Internal error: cannot locate perforce depot path from existing branches"
1016             sys.exit(128)
1017
1018         self.clientPath = p4Where(self.depotPath)
1019
1020         if len(self.clientPath) == 0:
1021             print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
1022             sys.exit(128)
1023
1024         print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
1025         self.oldWorkingDirectory = os.getcwd()
1026
1027         chdir(self.clientPath)
1028         print "Synchronizing p4 checkout..."
1029         p4_system("sync ...")
1030
1031         self.check()
1032
1033         commits = []
1034         for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
1035             commits.append(line.strip())
1036         commits.reverse()
1037
1038         if self.preserveUser or (gitConfig("git-p4.skipUserNameCheck") == "true"):
1039             self.checkAuthorship = False
1040         else:
1041             self.checkAuthorship = True
1042
1043         if self.preserveUser:
1044             self.checkValidP4Users(commits)
1045
1046         while len(commits) > 0:
1047             commit = commits[0]
1048             commits = commits[1:]
1049             self.applyCommit(commit)
1050             if not self.interactive:
1051                 break
1052
1053         if len(commits) == 0:
1054             print "All changes applied!"
1055             chdir(self.oldWorkingDirectory)
1056
1057             sync = P4Sync()
1058             sync.run([])
1059
1060             rebase = P4Rebase()
1061             rebase.rebase()
1062
1063         return True
1064
1065 class P4Sync(Command, P4UserMap):
1066     delete_actions = ( "delete", "move/delete", "purge" )
1067
1068     def __init__(self):
1069         Command.__init__(self)
1070         P4UserMap.__init__(self)
1071         self.options = [
1072                 optparse.make_option("--branch", dest="branch"),
1073                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
1074                 optparse.make_option("--changesfile", dest="changesFile"),
1075                 optparse.make_option("--silent", dest="silent", action="store_true"),
1076                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
1077                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
1078                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
1079                                      help="Import into refs/heads/ , not refs/remotes"),
1080                 optparse.make_option("--max-changes", dest="maxChanges"),
1081                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
1082                                      help="Keep entire BRANCH/DIR/SUBDIR prefix during import"),
1083                 optparse.make_option("--use-client-spec", dest="useClientSpec", action='store_true',
1084                                      help="Only sync files that are included in the Perforce Client Spec")
1085         ]
1086         self.description = """Imports from Perforce into a git repository.\n
1087     example:
1088     //depot/my/project/ -- to import the current head
1089     //depot/my/project/@all -- to import everything
1090     //depot/my/project/@1,6 -- to import only from revision 1 to 6
1091
1092     (a ... is not needed in the path p4 specification, it's added implicitly)"""
1093
1094         self.usage += " //depot/path[@revRange]"
1095         self.silent = False
1096         self.createdBranches = set()
1097         self.committedChanges = set()
1098         self.branch = ""
1099         self.detectBranches = False
1100         self.detectLabels = False
1101         self.changesFile = ""
1102         self.syncWithOrigin = True
1103         self.verbose = False
1104         self.importIntoRemotes = True
1105         self.maxChanges = ""
1106         self.isWindows = (platform.system() == "Windows")
1107         self.keepRepoPath = False
1108         self.depotPaths = None
1109         self.p4BranchesInGit = []
1110         self.cloneExclude = []
1111         self.useClientSpec = False
1112         self.clientSpecDirs = []
1113
1114         if gitConfig("git-p4.syncFromOrigin") == "false":
1115             self.syncWithOrigin = False
1116
1117     #
1118     # P4 wildcards are not allowed in filenames.  P4 complains
1119     # if you simply add them, but you can force it with "-f", in
1120     # which case it translates them into %xx encoding internally.
1121     # Search for and fix just these four characters.  Do % last so
1122     # that fixing it does not inadvertently create new %-escapes.
1123     #
1124     def wildcard_decode(self, path):
1125         # Cannot have * in a filename in windows; untested as to
1126         # what p4 would do in such a case.
1127         if not self.isWindows:
1128             path = path.replace("%2A", "*")
1129         path = path.replace("%23", "#") \
1130                    .replace("%40", "@") \
1131                    .replace("%25", "%")
1132         return path
1133
1134     def extractFilesFromCommit(self, commit):
1135         self.cloneExclude = [re.sub(r"\.\.\.$", "", path)
1136                              for path in self.cloneExclude]
1137         files = []
1138         fnum = 0
1139         while commit.has_key("depotFile%s" % fnum):
1140             path =  commit["depotFile%s" % fnum]
1141
1142             if [p for p in self.cloneExclude
1143                 if p4PathStartsWith(path, p)]:
1144                 found = False
1145             else:
1146                 found = [p for p in self.depotPaths
1147                          if p4PathStartsWith(path, p)]
1148             if not found:
1149                 fnum = fnum + 1
1150                 continue
1151
1152             file = {}
1153             file["path"] = path
1154             file["rev"] = commit["rev%s" % fnum]
1155             file["action"] = commit["action%s" % fnum]
1156             file["type"] = commit["type%s" % fnum]
1157             files.append(file)
1158             fnum = fnum + 1
1159         return files
1160
1161     def stripRepoPath(self, path, prefixes):
1162         if self.useClientSpec:
1163
1164             # if using the client spec, we use the output directory
1165             # specified in the client.  For example, a view
1166             #   //depot/foo/branch/... //client/branch/foo/...
1167             # will end up putting all foo/branch files into
1168             #  branch/foo/
1169             for val in self.clientSpecDirs:
1170                 if path.startswith(val[0]):
1171                     # replace the depot path with the client path
1172                     path = path.replace(val[0], val[1][1])
1173                     # now strip out the client (//client/...)
1174                     path = re.sub("^(//[^/]+/)", '', path)
1175                     # the rest is all path
1176                     return path
1177
1178         if self.keepRepoPath:
1179             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
1180
1181         for p in prefixes:
1182             if p4PathStartsWith(path, p):
1183                 path = path[len(p):]
1184
1185         return path
1186
1187     def splitFilesIntoBranches(self, commit):
1188         branches = {}
1189         fnum = 0
1190         while commit.has_key("depotFile%s" % fnum):
1191             path =  commit["depotFile%s" % fnum]
1192             found = [p for p in self.depotPaths
1193                      if p4PathStartsWith(path, p)]
1194             if not found:
1195                 fnum = fnum + 1
1196                 continue
1197
1198             file = {}
1199             file["path"] = path
1200             file["rev"] = commit["rev%s" % fnum]
1201             file["action"] = commit["action%s" % fnum]
1202             file["type"] = commit["type%s" % fnum]
1203             fnum = fnum + 1
1204
1205             relPath = self.stripRepoPath(path, self.depotPaths)
1206
1207             for branch in self.knownBranches.keys():
1208
1209                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
1210                 if relPath.startswith(branch + "/"):
1211                     if branch not in branches:
1212                         branches[branch] = []
1213                     branches[branch].append(file)
1214                     break
1215
1216         return branches
1217
1218     # output one file from the P4 stream
1219     # - helper for streamP4Files
1220
1221     def streamOneP4File(self, file, contents):
1222         if file["type"] == "apple":
1223             print "\nfile %s is a strange apple file that forks. Ignoring" % \
1224                 file['depotFile']
1225             return
1226
1227         relPath = self.stripRepoPath(file['depotFile'], self.branchPrefixes)
1228         relPath = self.wildcard_decode(relPath)
1229         if verbose:
1230             sys.stderr.write("%s\n" % relPath)
1231
1232         mode = "644"
1233         if isP4Exec(file["type"]):
1234             mode = "755"
1235         elif file["type"] == "symlink":
1236             mode = "120000"
1237             # p4 print on a symlink contains "target\n", so strip it off
1238             data = ''.join(contents)
1239             contents = [data[:-1]]
1240
1241         if self.isWindows and file["type"].endswith("text"):
1242             mangled = []
1243             for data in contents:
1244                 data = data.replace("\r\n", "\n")
1245                 mangled.append(data)
1246             contents = mangled
1247
1248         if file['type'] in ('text+ko', 'unicode+ko', 'binary+ko'):
1249             contents = map(lambda text: re.sub(r'(?i)\$(Id|Header):[^$]*\$',r'$\1$', text), contents)
1250         elif file['type'] in ('text+k', 'ktext', 'kxtext', 'unicode+k', 'binary+k'):
1251             contents = map(lambda text: re.sub(r'\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$\n]*\$',r'$\1$', text), contents)
1252
1253         self.gitStream.write("M %s inline %s\n" % (mode, relPath))
1254
1255         # total length...
1256         length = 0
1257         for d in contents:
1258             length = length + len(d)
1259
1260         self.gitStream.write("data %d\n" % length)
1261         for d in contents:
1262             self.gitStream.write(d)
1263         self.gitStream.write("\n")
1264
1265     def streamOneP4Deletion(self, file):
1266         relPath = self.stripRepoPath(file['path'], self.branchPrefixes)
1267         if verbose:
1268             sys.stderr.write("delete %s\n" % relPath)
1269         self.gitStream.write("D %s\n" % relPath)
1270
1271     # handle another chunk of streaming data
1272     def streamP4FilesCb(self, marshalled):
1273
1274         if marshalled.has_key('depotFile') and self.stream_have_file_info:
1275             # start of a new file - output the old one first
1276             self.streamOneP4File(self.stream_file, self.stream_contents)
1277             self.stream_file = {}
1278             self.stream_contents = []
1279             self.stream_have_file_info = False
1280
1281         # pick up the new file information... for the
1282         # 'data' field we need to append to our array
1283         for k in marshalled.keys():
1284             if k == 'data':
1285                 self.stream_contents.append(marshalled['data'])
1286             else:
1287                 self.stream_file[k] = marshalled[k]
1288
1289         self.stream_have_file_info = True
1290
1291     # Stream directly from "p4 files" into "git fast-import"
1292     def streamP4Files(self, files):
1293         filesForCommit = []
1294         filesToRead = []
1295         filesToDelete = []
1296
1297         for f in files:
1298             includeFile = True
1299             for val in self.clientSpecDirs:
1300                 if f['path'].startswith(val[0]):
1301                     if val[1][0] <= 0:
1302                         includeFile = False
1303                     break
1304
1305             if includeFile:
1306                 filesForCommit.append(f)
1307                 if f['action'] in self.delete_actions:
1308                     filesToDelete.append(f)
1309                 else:
1310                     filesToRead.append(f)
1311
1312         # deleted files...
1313         for f in filesToDelete:
1314             self.streamOneP4Deletion(f)
1315
1316         if len(filesToRead) > 0:
1317             self.stream_file = {}
1318             self.stream_contents = []
1319             self.stream_have_file_info = False
1320
1321             # curry self argument
1322             def streamP4FilesCbSelf(entry):
1323                 self.streamP4FilesCb(entry)
1324
1325             p4CmdList("-x - print",
1326                 '\n'.join(['%s#%s' % (f['path'], f['rev'])
1327                                                   for f in filesToRead]),
1328                 cb=streamP4FilesCbSelf)
1329
1330             # do the last chunk
1331             if self.stream_file.has_key('depotFile'):
1332                 self.streamOneP4File(self.stream_file, self.stream_contents)
1333
1334     def commit(self, details, files, branch, branchPrefixes, parent = ""):
1335         epoch = details["time"]
1336         author = details["user"]
1337         self.branchPrefixes = branchPrefixes
1338
1339         if self.verbose:
1340             print "commit into %s" % branch
1341
1342         # start with reading files; if that fails, we should not
1343         # create a commit.
1344         new_files = []
1345         for f in files:
1346             if [p for p in branchPrefixes if p4PathStartsWith(f['path'], p)]:
1347                 new_files.append (f)
1348             else:
1349                 sys.stderr.write("Ignoring file outside of prefix: %s\n" % f['path'])
1350
1351         self.gitStream.write("commit %s\n" % branch)
1352 #        gitStream.write("mark :%s\n" % details["change"])
1353         self.committedChanges.add(int(details["change"]))
1354         committer = ""
1355         if author not in self.users:
1356             self.getUserMapFromPerforceServer()
1357         if author in self.users:
1358             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
1359         else:
1360             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
1361
1362         self.gitStream.write("committer %s\n" % committer)
1363
1364         self.gitStream.write("data <<EOT\n")
1365         self.gitStream.write(details["desc"])
1366         self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
1367                              % (','.join (branchPrefixes), details["change"]))
1368         if len(details['options']) > 0:
1369             self.gitStream.write(": options = %s" % details['options'])
1370         self.gitStream.write("]\nEOT\n\n")
1371
1372         if len(parent) > 0:
1373             if self.verbose:
1374                 print "parent %s" % parent
1375             self.gitStream.write("from %s\n" % parent)
1376
1377         self.streamP4Files(new_files)
1378         self.gitStream.write("\n")
1379
1380         change = int(details["change"])
1381
1382         if self.labels.has_key(change):
1383             label = self.labels[change]
1384             labelDetails = label[0]
1385             labelRevisions = label[1]
1386             if self.verbose:
1387                 print "Change %s is labelled %s" % (change, labelDetails)
1388
1389             files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
1390                                                     for p in branchPrefixes]))
1391
1392             if len(files) == len(labelRevisions):
1393
1394                 cleanedFiles = {}
1395                 for info in files:
1396                     if info["action"] in self.delete_actions:
1397                         continue
1398                     cleanedFiles[info["depotFile"]] = info["rev"]
1399
1400                 if cleanedFiles == labelRevisions:
1401                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
1402                     self.gitStream.write("from %s\n" % branch)
1403
1404                     owner = labelDetails["Owner"]
1405                     tagger = ""
1406                     if author in self.users:
1407                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
1408                     else:
1409                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
1410                     self.gitStream.write("tagger %s\n" % tagger)
1411                     self.gitStream.write("data <<EOT\n")
1412                     self.gitStream.write(labelDetails["Description"])
1413                     self.gitStream.write("EOT\n\n")
1414
1415                 else:
1416                     if not self.silent:
1417                         print ("Tag %s does not match with change %s: files do not match."
1418                                % (labelDetails["label"], change))
1419
1420             else:
1421                 if not self.silent:
1422                     print ("Tag %s does not match with change %s: file count is different."
1423                            % (labelDetails["label"], change))
1424
1425     def getLabels(self):
1426         self.labels = {}
1427
1428         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
1429         if len(l) > 0 and not self.silent:
1430             print "Finding files belonging to labels in %s" % `self.depotPaths`
1431
1432         for output in l:
1433             label = output["label"]
1434             revisions = {}
1435             newestChange = 0
1436             if self.verbose:
1437                 print "Querying files for label %s" % label
1438             for file in p4CmdList("files "
1439                                   +  ' '.join (["%s...@%s" % (p, label)
1440                                                 for p in self.depotPaths])):
1441                 revisions[file["depotFile"]] = file["rev"]
1442                 change = int(file["change"])
1443                 if change > newestChange:
1444                     newestChange = change
1445
1446             self.labels[newestChange] = [output, revisions]
1447
1448         if self.verbose:
1449             print "Label changes: %s" % self.labels.keys()
1450
1451     def guessProjectName(self):
1452         for p in self.depotPaths:
1453             if p.endswith("/"):
1454                 p = p[:-1]
1455             p = p[p.strip().rfind("/") + 1:]
1456             if not p.endswith("/"):
1457                p += "/"
1458             return p
1459
1460     def getBranchMapping(self):
1461         lostAndFoundBranches = set()
1462
1463         user = gitConfig("git-p4.branchUser")
1464         if len(user) > 0:
1465             command = "branches -u %s" % user
1466         else:
1467             command = "branches"
1468
1469         for info in p4CmdList(command):
1470             details = p4Cmd("branch -o %s" % info["branch"])
1471             viewIdx = 0
1472             while details.has_key("View%s" % viewIdx):
1473                 paths = details["View%s" % viewIdx].split(" ")
1474                 viewIdx = viewIdx + 1
1475                 # require standard //depot/foo/... //depot/bar/... mapping
1476                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1477                     continue
1478                 source = paths[0]
1479                 destination = paths[1]
1480                 ## HACK
1481                 if p4PathStartsWith(source, self.depotPaths[0]) and p4PathStartsWith(destination, self.depotPaths[0]):
1482                     source = source[len(self.depotPaths[0]):-4]
1483                     destination = destination[len(self.depotPaths[0]):-4]
1484
1485                     if destination in self.knownBranches:
1486                         if not self.silent:
1487                             print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1488                             print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1489                         continue
1490
1491                     self.knownBranches[destination] = source
1492
1493                     lostAndFoundBranches.discard(destination)
1494
1495                     if source not in self.knownBranches:
1496                         lostAndFoundBranches.add(source)
1497
1498         # Perforce does not strictly require branches to be defined, so we also
1499         # check git config for a branch list.
1500         #
1501         # Example of branch definition in git config file:
1502         # [git-p4]
1503         #   branchList=main:branchA
1504         #   branchList=main:branchB
1505         #   branchList=branchA:branchC
1506         configBranches = gitConfigList("git-p4.branchList")
1507         for branch in configBranches:
1508             if branch:
1509                 (source, destination) = branch.split(":")
1510                 self.knownBranches[destination] = source
1511
1512                 lostAndFoundBranches.discard(destination)
1513
1514                 if source not in self.knownBranches:
1515                     lostAndFoundBranches.add(source)
1516
1517
1518         for branch in lostAndFoundBranches:
1519             self.knownBranches[branch] = branch
1520
1521     def getBranchMappingFromGitBranches(self):
1522         branches = p4BranchesInGit(self.importIntoRemotes)
1523         for branch in branches.keys():
1524             if branch == "master":
1525                 branch = "main"
1526             else:
1527                 branch = branch[len(self.projectName):]
1528             self.knownBranches[branch] = branch
1529
1530     def listExistingP4GitBranches(self):
1531         # branches holds mapping from name to commit
1532         branches = p4BranchesInGit(self.importIntoRemotes)
1533         self.p4BranchesInGit = branches.keys()
1534         for branch in branches.keys():
1535             self.initialParents[self.refPrefix + branch] = branches[branch]
1536
1537     def updateOptionDict(self, d):
1538         option_keys = {}
1539         if self.keepRepoPath:
1540             option_keys['keepRepoPath'] = 1
1541
1542         d["options"] = ' '.join(sorted(option_keys.keys()))
1543
1544     def readOptions(self, d):
1545         self.keepRepoPath = (d.has_key('options')
1546                              and ('keepRepoPath' in d['options']))
1547
1548     def gitRefForBranch(self, branch):
1549         if branch == "main":
1550             return self.refPrefix + "master"
1551
1552         if len(branch) <= 0:
1553             return branch
1554
1555         return self.refPrefix + self.projectName + branch
1556
1557     def gitCommitByP4Change(self, ref, change):
1558         if self.verbose:
1559             print "looking in ref " + ref + " for change %s using bisect..." % change
1560
1561         earliestCommit = ""
1562         latestCommit = parseRevision(ref)
1563
1564         while True:
1565             if self.verbose:
1566                 print "trying: earliest %s latest %s" % (earliestCommit, latestCommit)
1567             next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip()
1568             if len(next) == 0:
1569                 if self.verbose:
1570                     print "argh"
1571                 return ""
1572             log = extractLogMessageFromGitCommit(next)
1573             settings = extractSettingsGitLog(log)
1574             currentChange = int(settings['change'])
1575             if self.verbose:
1576                 print "current change %s" % currentChange
1577
1578             if currentChange == change:
1579                 if self.verbose:
1580                     print "found %s" % next
1581                 return next
1582
1583             if currentChange < change:
1584                 earliestCommit = "^%s" % next
1585             else:
1586                 latestCommit = "%s" % next
1587
1588         return ""
1589
1590     def importNewBranch(self, branch, maxChange):
1591         # make fast-import flush all changes to disk and update the refs using the checkpoint
1592         # command so that we can try to find the branch parent in the git history
1593         self.gitStream.write("checkpoint\n\n");
1594         self.gitStream.flush();
1595         branchPrefix = self.depotPaths[0] + branch + "/"
1596         range = "@1,%s" % maxChange
1597         #print "prefix" + branchPrefix
1598         changes = p4ChangesForPaths([branchPrefix], range)
1599         if len(changes) <= 0:
1600             return False
1601         firstChange = changes[0]
1602         #print "first change in branch: %s" % firstChange
1603         sourceBranch = self.knownBranches[branch]
1604         sourceDepotPath = self.depotPaths[0] + sourceBranch
1605         sourceRef = self.gitRefForBranch(sourceBranch)
1606         #print "source " + sourceBranch
1607
1608         branchParentChange = int(p4Cmd("changes -m 1 %s...@1,%s" % (sourceDepotPath, firstChange))["change"])
1609         #print "branch parent: %s" % branchParentChange
1610         gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange)
1611         if len(gitParent) > 0:
1612             self.initialParents[self.gitRefForBranch(branch)] = gitParent
1613             #print "parent git commit: %s" % gitParent
1614
1615         self.importChanges(changes)
1616         return True
1617
1618     def importChanges(self, changes):
1619         cnt = 1
1620         for change in changes:
1621             description = p4Cmd("describe %s" % change)
1622             self.updateOptionDict(description)
1623
1624             if not self.silent:
1625                 sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1626                 sys.stdout.flush()
1627             cnt = cnt + 1
1628
1629             try:
1630                 if self.detectBranches:
1631                     branches = self.splitFilesIntoBranches(description)
1632                     for branch in branches.keys():
1633                         ## HACK  --hwn
1634                         branchPrefix = self.depotPaths[0] + branch + "/"
1635
1636                         parent = ""
1637
1638                         filesForCommit = branches[branch]
1639
1640                         if self.verbose:
1641                             print "branch is %s" % branch
1642
1643                         self.updatedBranches.add(branch)
1644
1645                         if branch not in self.createdBranches:
1646                             self.createdBranches.add(branch)
1647                             parent = self.knownBranches[branch]
1648                             if parent == branch:
1649                                 parent = ""
1650                             else:
1651                                 fullBranch = self.projectName + branch
1652                                 if fullBranch not in self.p4BranchesInGit:
1653                                     if not self.silent:
1654                                         print("\n    Importing new branch %s" % fullBranch);
1655                                     if self.importNewBranch(branch, change - 1):
1656                                         parent = ""
1657                                         self.p4BranchesInGit.append(fullBranch)
1658                                     if not self.silent:
1659                                         print("\n    Resuming with change %s" % change);
1660
1661                                 if self.verbose:
1662                                     print "parent determined through known branches: %s" % parent
1663
1664                         branch = self.gitRefForBranch(branch)
1665                         parent = self.gitRefForBranch(parent)
1666
1667                         if self.verbose:
1668                             print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1669
1670                         if len(parent) == 0 and branch in self.initialParents:
1671                             parent = self.initialParents[branch]
1672                             del self.initialParents[branch]
1673
1674                         self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1675                 else:
1676                     files = self.extractFilesFromCommit(description)
1677                     self.commit(description, files, self.branch, self.depotPaths,
1678                                 self.initialParent)
1679                     self.initialParent = ""
1680             except IOError:
1681                 print self.gitError.read()
1682                 sys.exit(1)
1683
1684     def importHeadRevision(self, revision):
1685         print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
1686
1687         details = {}
1688         details["user"] = "git perforce import user"
1689         details["desc"] = ("Initial import of %s from the state at revision %s\n"
1690                            % (' '.join(self.depotPaths), revision))
1691         details["change"] = revision
1692         newestRevision = 0
1693
1694         fileCnt = 0
1695         for info in p4CmdList("files "
1696                               +  ' '.join(["%s...%s"
1697                                            % (p, revision)
1698                                            for p in self.depotPaths])):
1699
1700             if 'code' in info and info['code'] == 'error':
1701                 sys.stderr.write("p4 returned an error: %s\n"
1702                                  % info['data'])
1703                 if info['data'].find("must refer to client") >= 0:
1704                     sys.stderr.write("This particular p4 error is misleading.\n")
1705                     sys.stderr.write("Perhaps the depot path was misspelled.\n");
1706                     sys.stderr.write("Depot path:  %s\n" % " ".join(self.depotPaths))
1707                 sys.exit(1)
1708             if 'p4ExitCode' in info:
1709                 sys.stderr.write("p4 exitcode: %s\n" % info['p4ExitCode'])
1710                 sys.exit(1)
1711
1712
1713             change = int(info["change"])
1714             if change > newestRevision:
1715                 newestRevision = change
1716
1717             if info["action"] in self.delete_actions:
1718                 # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1719                 #fileCnt = fileCnt + 1
1720                 continue
1721
1722             for prop in ["depotFile", "rev", "action", "type" ]:
1723                 details["%s%s" % (prop, fileCnt)] = info[prop]
1724
1725             fileCnt = fileCnt + 1
1726
1727         details["change"] = newestRevision
1728
1729         # Use time from top-most change so that all git-p4 clones of
1730         # the same p4 repo have the same commit SHA1s.
1731         res = p4CmdList("describe -s %d" % newestRevision)
1732         newestTime = None
1733         for r in res:
1734             if r.has_key('time'):
1735                 newestTime = int(r['time'])
1736         if newestTime is None:
1737             die("\"describe -s\" on newest change %d did not give a time")
1738         details["time"] = newestTime
1739
1740         self.updateOptionDict(details)
1741         try:
1742             self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1743         except IOError:
1744             print "IO error with git fast-import. Is your git version recent enough?"
1745             print self.gitError.read()
1746
1747
1748     def getClientSpec(self):
1749         specList = p4CmdList( "client -o" )
1750         temp = {}
1751         for entry in specList:
1752             for k,v in entry.iteritems():
1753                 if k.startswith("View"):
1754
1755                     # p4 has these %%1 to %%9 arguments in specs to
1756                     # reorder paths; which we can't handle (yet :)
1757                     if re.match('%%\d', v) != None:
1758                         print "Sorry, can't handle %%n arguments in client specs"
1759                         sys.exit(1)
1760
1761                     if v.startswith('"'):
1762                         start = 1
1763                     else:
1764                         start = 0
1765                     index = v.find("...")
1766
1767                     # save the "client view"; i.e the RHS of the view
1768                     # line that tells the client where to put the
1769                     # files for this view.
1770                     cv = v[index+3:].strip() # +3 to remove previous '...'
1771
1772                     # if the client view doesn't end with a
1773                     # ... wildcard, then we're going to mess up the
1774                     # output directory, so fail gracefully.
1775                     if not cv.endswith('...'):
1776                         print 'Sorry, client view in "%s" needs to end with wildcard' % (k)
1777                         sys.exit(1)
1778                     cv=cv[:-3]
1779
1780                     # now save the view; +index means included, -index
1781                     # means it should be filtered out.
1782                     v = v[start:index]
1783                     if v.startswith("-"):
1784                         v = v[1:]
1785                         include = -len(v)
1786                     else:
1787                         include = len(v)
1788
1789                     temp[v] = (include, cv)
1790
1791         self.clientSpecDirs = temp.items()
1792         self.clientSpecDirs.sort( lambda x, y: abs( y[1][0] ) - abs( x[1][0] ) )
1793
1794     def run(self, args):
1795         self.depotPaths = []
1796         self.changeRange = ""
1797         self.initialParent = ""
1798         self.previousDepotPaths = []
1799
1800         # map from branch depot path to parent branch
1801         self.knownBranches = {}
1802         self.initialParents = {}
1803         self.hasOrigin = originP4BranchesExist()
1804         if not self.syncWithOrigin:
1805             self.hasOrigin = False
1806
1807         if self.importIntoRemotes:
1808             self.refPrefix = "refs/remotes/p4/"
1809         else:
1810             self.refPrefix = "refs/heads/p4/"
1811
1812         if self.syncWithOrigin and self.hasOrigin:
1813             if not self.silent:
1814                 print "Syncing with origin first by calling git fetch origin"
1815             system("git fetch origin")
1816
1817         if len(self.branch) == 0:
1818             self.branch = self.refPrefix + "master"
1819             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1820                 system("git update-ref %s refs/heads/p4" % self.branch)
1821                 system("git branch -D p4");
1822             # create it /after/ importing, when master exists
1823             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
1824                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1825
1826         if self.useClientSpec or gitConfig("git-p4.useclientspec") == "true":
1827             self.getClientSpec()
1828
1829         # TODO: should always look at previous commits,
1830         # merge with previous imports, if possible.
1831         if args == []:
1832             if self.hasOrigin:
1833                 createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
1834             self.listExistingP4GitBranches()
1835
1836             if len(self.p4BranchesInGit) > 1:
1837                 if not self.silent:
1838                     print "Importing from/into multiple branches"
1839                 self.detectBranches = True
1840
1841             if self.verbose:
1842                 print "branches: %s" % self.p4BranchesInGit
1843
1844             p4Change = 0
1845             for branch in self.p4BranchesInGit:
1846                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1847
1848                 settings = extractSettingsGitLog(logMsg)
1849
1850                 self.readOptions(settings)
1851                 if (settings.has_key('depot-paths')
1852                     and settings.has_key ('change')):
1853                     change = int(settings['change']) + 1
1854                     p4Change = max(p4Change, change)
1855
1856                     depotPaths = sorted(settings['depot-paths'])
1857                     if self.previousDepotPaths == []:
1858                         self.previousDepotPaths = depotPaths
1859                     else:
1860                         paths = []
1861                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1862                             prev_list = prev.split("/")
1863                             cur_list = cur.split("/")
1864                             for i in range(0, min(len(cur_list), len(prev_list))):
1865                                 if cur_list[i] <> prev_list[i]:
1866                                     i = i - 1
1867                                     break
1868
1869                             paths.append ("/".join(cur_list[:i + 1]))
1870
1871                         self.previousDepotPaths = paths
1872
1873             if p4Change > 0:
1874                 self.depotPaths = sorted(self.previousDepotPaths)
1875                 self.changeRange = "@%s,#head" % p4Change
1876                 if not self.detectBranches:
1877                     self.initialParent = parseRevision(self.branch)
1878                 if not self.silent and not self.detectBranches:
1879                     print "Performing incremental import into %s git branch" % self.branch
1880
1881         if not self.branch.startswith("refs/"):
1882             self.branch = "refs/heads/" + self.branch
1883
1884         if len(args) == 0 and self.depotPaths:
1885             if not self.silent:
1886                 print "Depot paths: %s" % ' '.join(self.depotPaths)
1887         else:
1888             if self.depotPaths and self.depotPaths != args:
1889                 print ("previous import used depot path %s and now %s was specified. "
1890                        "This doesn't work!" % (' '.join (self.depotPaths),
1891                                                ' '.join (args)))
1892                 sys.exit(1)
1893
1894             self.depotPaths = sorted(args)
1895
1896         revision = ""
1897         self.users = {}
1898
1899         newPaths = []
1900         for p in self.depotPaths:
1901             if p.find("@") != -1:
1902                 atIdx = p.index("@")
1903                 self.changeRange = p[atIdx:]
1904                 if self.changeRange == "@all":
1905                     self.changeRange = ""
1906                 elif ',' not in self.changeRange:
1907                     revision = self.changeRange
1908                     self.changeRange = ""
1909                 p = p[:atIdx]
1910             elif p.find("#") != -1:
1911                 hashIdx = p.index("#")
1912                 revision = p[hashIdx:]
1913                 p = p[:hashIdx]
1914             elif self.previousDepotPaths == []:
1915                 revision = "#head"
1916
1917             p = re.sub ("\.\.\.$", "", p)
1918             if not p.endswith("/"):
1919                 p += "/"
1920
1921             newPaths.append(p)
1922
1923         self.depotPaths = newPaths
1924
1925
1926         self.loadUserMapFromCache()
1927         self.labels = {}
1928         if self.detectLabels:
1929             self.getLabels();
1930
1931         if self.detectBranches:
1932             ## FIXME - what's a P4 projectName ?
1933             self.projectName = self.guessProjectName()
1934
1935             if self.hasOrigin:
1936                 self.getBranchMappingFromGitBranches()
1937             else:
1938                 self.getBranchMapping()
1939             if self.verbose:
1940                 print "p4-git branches: %s" % self.p4BranchesInGit
1941                 print "initial parents: %s" % self.initialParents
1942             for b in self.p4BranchesInGit:
1943                 if b != "master":
1944
1945                     ## FIXME
1946                     b = b[len(self.projectName):]
1947                 self.createdBranches.add(b)
1948
1949         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1950
1951         importProcess = subprocess.Popen(["git", "fast-import"],
1952                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1953                                          stderr=subprocess.PIPE);
1954         self.gitOutput = importProcess.stdout
1955         self.gitStream = importProcess.stdin
1956         self.gitError = importProcess.stderr
1957
1958         if revision:
1959             self.importHeadRevision(revision)
1960         else:
1961             changes = []
1962
1963             if len(self.changesFile) > 0:
1964                 output = open(self.changesFile).readlines()
1965                 changeSet = set()
1966                 for line in output:
1967                     changeSet.add(int(line))
1968
1969                 for change in changeSet:
1970                     changes.append(change)
1971
1972                 changes.sort()
1973             else:
1974                 # catch "git-p4 sync" with no new branches, in a repo that
1975                 # does not have any existing git-p4 branches
1976                 if len(args) == 0 and not self.p4BranchesInGit:
1977                     die("No remote p4 branches.  Perhaps you never did \"git p4 clone\" in here.");
1978                 if self.verbose:
1979                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1980                                                               self.changeRange)
1981                 changes = p4ChangesForPaths(self.depotPaths, self.changeRange)
1982
1983                 if len(self.maxChanges) > 0:
1984                     changes = changes[:min(int(self.maxChanges), len(changes))]
1985
1986             if len(changes) == 0:
1987                 if not self.silent:
1988                     print "No changes to import!"
1989                 return True
1990
1991             if not self.silent and not self.detectBranches:
1992                 print "Import destination: %s" % self.branch
1993
1994             self.updatedBranches = set()
1995
1996             self.importChanges(changes)
1997
1998             if not self.silent:
1999                 print ""
2000                 if len(self.updatedBranches) > 0:
2001                     sys.stdout.write("Updated branches: ")
2002                     for b in self.updatedBranches:
2003                         sys.stdout.write("%s " % b)
2004                     sys.stdout.write("\n")
2005
2006         self.gitStream.close()
2007         if importProcess.wait() != 0:
2008             die("fast-import failed: %s" % self.gitError.read())
2009         self.gitOutput.close()
2010         self.gitError.close()
2011
2012         return True
2013
2014 class P4Rebase(Command):
2015     def __init__(self):
2016         Command.__init__(self)
2017         self.options = [ ]
2018         self.description = ("Fetches the latest revision from perforce and "
2019                             + "rebases the current work (branch) against it")
2020         self.verbose = False
2021
2022     def run(self, args):
2023         sync = P4Sync()
2024         sync.run([])
2025
2026         return self.rebase()
2027
2028     def rebase(self):
2029         if os.system("git update-index --refresh") != 0:
2030             die("Some files in your working directory are modified and different than what is in your index. You can use git update-index <filename> to bring the index up-to-date or stash away all your changes with git stash.");
2031         if len(read_pipe("git diff-index HEAD --")) > 0:
2032             die("You have uncommited changes. Please commit them before rebasing or stash them away with git stash.");
2033
2034         [upstream, settings] = findUpstreamBranchPoint()
2035         if len(upstream) == 0:
2036             die("Cannot find upstream branchpoint for rebase")
2037
2038         # the branchpoint may be p4/foo~3, so strip off the parent
2039         upstream = re.sub("~[0-9]+$", "", upstream)
2040
2041         print "Rebasing the current branch onto %s" % upstream
2042         oldHead = read_pipe("git rev-parse HEAD").strip()
2043         system("git rebase %s" % upstream)
2044         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
2045         return True
2046
2047 class P4Clone(P4Sync):
2048     def __init__(self):
2049         P4Sync.__init__(self)
2050         self.description = "Creates a new git repository and imports from Perforce into it"
2051         self.usage = "usage: %prog [options] //depot/path[@revRange]"
2052         self.options += [
2053             optparse.make_option("--destination", dest="cloneDestination",
2054                                  action='store', default=None,
2055                                  help="where to leave result of the clone"),
2056             optparse.make_option("-/", dest="cloneExclude",
2057                                  action="append", type="string",
2058                                  help="exclude depot path"),
2059             optparse.make_option("--bare", dest="cloneBare",
2060                                  action="store_true", default=False),
2061         ]
2062         self.cloneDestination = None
2063         self.needsGit = False
2064         self.cloneBare = False
2065
2066     # This is required for the "append" cloneExclude action
2067     def ensure_value(self, attr, value):
2068         if not hasattr(self, attr) or getattr(self, attr) is None:
2069             setattr(self, attr, value)
2070         return getattr(self, attr)
2071
2072     def defaultDestination(self, args):
2073         ## TODO: use common prefix of args?
2074         depotPath = args[0]
2075         depotDir = re.sub("(@[^@]*)$", "", depotPath)
2076         depotDir = re.sub("(#[^#]*)$", "", depotDir)
2077         depotDir = re.sub(r"\.\.\.$", "", depotDir)
2078         depotDir = re.sub(r"/$", "", depotDir)
2079         return os.path.split(depotDir)[1]
2080
2081     def run(self, args):
2082         if len(args) < 1:
2083             return False
2084
2085         if self.keepRepoPath and not self.cloneDestination:
2086             sys.stderr.write("Must specify destination for --keep-path\n")
2087             sys.exit(1)
2088
2089         depotPaths = args
2090
2091         if not self.cloneDestination and len(depotPaths) > 1:
2092             self.cloneDestination = depotPaths[-1]
2093             depotPaths = depotPaths[:-1]
2094
2095         self.cloneExclude = ["/"+p for p in self.cloneExclude]
2096         for p in depotPaths:
2097             if not p.startswith("//"):
2098                 return False
2099
2100         if not self.cloneDestination:
2101             self.cloneDestination = self.defaultDestination(args)
2102
2103         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
2104
2105         if not os.path.exists(self.cloneDestination):
2106             os.makedirs(self.cloneDestination)
2107         chdir(self.cloneDestination)
2108
2109         init_cmd = [ "git", "init" ]
2110         if self.cloneBare:
2111             init_cmd.append("--bare")
2112         subprocess.check_call(init_cmd)
2113
2114         if not P4Sync.run(self, depotPaths):
2115             return False
2116         if self.branch != "master":
2117             if self.importIntoRemotes:
2118                 masterbranch = "refs/remotes/p4/master"
2119             else:
2120                 masterbranch = "refs/heads/p4/master"
2121             if gitBranchExists(masterbranch):
2122                 system("git branch master %s" % masterbranch)
2123                 if not self.cloneBare:
2124                     system("git checkout -f")
2125             else:
2126                 print "Could not detect main branch. No checkout/master branch created."
2127
2128         return True
2129
2130 class P4Branches(Command):
2131     def __init__(self):
2132         Command.__init__(self)
2133         self.options = [ ]
2134         self.description = ("Shows the git branches that hold imports and their "
2135                             + "corresponding perforce depot paths")
2136         self.verbose = False
2137
2138     def run(self, args):
2139         if originP4BranchesExist():
2140             createOrUpdateBranchesFromOrigin()
2141
2142         cmdline = "git rev-parse --symbolic "
2143         cmdline += " --remotes"
2144
2145         for line in read_pipe_lines(cmdline):
2146             line = line.strip()
2147
2148             if not line.startswith('p4/') or line == "p4/HEAD":
2149                 continue
2150             branch = line
2151
2152             log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
2153             settings = extractSettingsGitLog(log)
2154
2155             print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
2156         return True
2157
2158 class HelpFormatter(optparse.IndentedHelpFormatter):
2159     def __init__(self):
2160         optparse.IndentedHelpFormatter.__init__(self)
2161
2162     def format_description(self, description):
2163         if description:
2164             return description + "\n"
2165         else:
2166             return ""
2167
2168 def printUsage(commands):
2169     print "usage: %s <command> [options]" % sys.argv[0]
2170     print ""
2171     print "valid commands: %s" % ", ".join(commands)
2172     print ""
2173     print "Try %s <command> --help for command specific help." % sys.argv[0]
2174     print ""
2175
2176 commands = {
2177     "debug" : P4Debug,
2178     "submit" : P4Submit,
2179     "commit" : P4Submit,
2180     "sync" : P4Sync,
2181     "rebase" : P4Rebase,
2182     "clone" : P4Clone,
2183     "rollback" : P4RollBack,
2184     "branches" : P4Branches
2185 }
2186
2187
2188 def main():
2189     if len(sys.argv[1:]) == 0:
2190         printUsage(commands.keys())
2191         sys.exit(2)
2192
2193     cmd = ""
2194     cmdName = sys.argv[1]
2195     try:
2196         klass = commands[cmdName]
2197         cmd = klass()
2198     except KeyError:
2199         print "unknown command %s" % cmdName
2200         print ""
2201         printUsage(commands.keys())
2202         sys.exit(2)
2203
2204     options = cmd.options
2205     cmd.gitdir = os.environ.get("GIT_DIR", None)
2206
2207     args = sys.argv[2:]
2208
2209     if len(options) > 0:
2210         options.append(optparse.make_option("--git-dir", dest="gitdir"))
2211
2212         parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
2213                                        options,
2214                                        description = cmd.description,
2215                                        formatter = HelpFormatter())
2216
2217         (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
2218     global verbose
2219     verbose = cmd.verbose
2220     if cmd.needsGit:
2221         if cmd.gitdir == None:
2222             cmd.gitdir = os.path.abspath(".git")
2223             if not isValidGitDir(cmd.gitdir):
2224                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
2225                 if os.path.exists(cmd.gitdir):
2226                     cdup = read_pipe("git rev-parse --show-cdup").strip()
2227                     if len(cdup) > 0:
2228                         chdir(cdup);
2229
2230         if not isValidGitDir(cmd.gitdir):
2231             if isValidGitDir(cmd.gitdir + "/.git"):
2232                 cmd.gitdir += "/.git"
2233             else:
2234                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
2235
2236         os.environ["GIT_DIR"] = cmd.gitdir
2237
2238     if not cmd.run(args):
2239         parser.print_help()
2240
2241
2242 if __name__ == '__main__':
2243     main()