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, popen2, subprocess, shelve
  12 import tempfile, getopt, sha, os.path, time, platform
  13 import re
  14
  15 from sets import Set;
  16
  17 gitdir = os.environ.get("GIT_DIR", "")
  18 verbose = False
  19
  20 def write_pipe(c, str):
  21     if verbose:
  22         sys.stderr.write('writing pipe: %s\n' % c)
  23
  24     pipe = os.popen(c, 'w')
  25     val = pipe.write(str)
  26     if pipe.close():
  27         sys.stderr.write('Command %s failed\n' % c)
  28         sys.exit(1)
  29
  30     return val
  31
  32 def read_pipe(c, ignore_error=False):
  33     if verbose:
  34         sys.stderr.write('reading pipe: %s\n' % c)
  35
  36     pipe = os.popen(c, 'rb')
  37     val = pipe.read()
  38     if pipe.close() and not ignore_error:
  39         sys.stderr.write('Command %s failed\n' % c)
  40         sys.exit(1)
  41
  42     return val
  43
  44
  45 def read_pipe_lines(c):
  46     if verbose:
  47         sys.stderr.write('reading pipe: %s\n' % c)
  48     ## todo: check return status
  49     pipe = os.popen(c, 'rb')
  50     val = pipe.readlines()
  51     if pipe.close():
  52         sys.stderr.write('Command %s failed\n' % c)
  53         sys.exit(1)
  54
  55     return val
  56
  57 def system(cmd):
  58     if verbose:
  59         sys.stderr.write("executing %s" % cmd)
  60     if os.system(cmd) != 0:
  61         die("command failed: %s" % cmd)
  62
  63 def p4CmdList(cmd):
  64     cmd = "p4 -G %s" % cmd
  65     pipe = os.popen(cmd, "rb")
  66
  67     result = []
  68     try:
  69         while True:
  70             entry = marshal.load(pipe)
  71             result.append(entry)
  72     except EOFError:
  73         pass
  74     exitCode = pipe.close()
  75     if exitCode != None:
  76         entry = {}
  77         entry["p4ExitCode"] = exitCode
  78         result.append(entry)
  79
  80     return result
  81
  82 def p4Cmd(cmd):
  83     list = p4CmdList(cmd)
  84     result = {}
  85     for entry in list:
  86         result.update(entry)
  87     return result;
  88
  89 def p4Where(depotPath):
  90     if not depotPath.endswith("/"):
  91         depotPath += "/"
  92     output = p4Cmd("where %s..." % depotPath)
  93     if output["code"] == "error":
  94         return ""
  95     clientPath = ""
  96     if "path" in output:
  97         clientPath = output.get("path")
  98     elif "data" in output:
  99         data = output.get("data")
 100         lastSpace = data.rfind(" ")
 101         clientPath = data[lastSpace + 1:]
 102
 103     if clientPath.endswith("..."):
 104         clientPath = clientPath[:-3]
 105     return clientPath
 106
 107 def die(msg):
 108     sys.stderr.write(msg + "\n")
 109     sys.exit(1)
 110
 111 def currentGitBranch():
 112     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 113
 114 def isValidGitDir(path):
 115     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
 116         return True;
 117     return False
 118
 119 def parseRevision(ref):
 120     return read_pipe("git rev-parse %s" % ref).strip()
 121
 122 def extractLogMessageFromGitCommit(commit):
 123     logMessage = ""
 124
 125     ## fixme: title is first line of commit, not 1st paragraph.
 126     foundTitle = False
 127     for log in read_pipe_lines("git cat-file commit %s" % commit):
 128        if not foundTitle:
 129            if len(log) == 1:
 130                foundTitle = True
 131            continue
 132
 133        logMessage += log
 134     return logMessage
 135
 136 def extractDepotPathsAndChangeFromGitLog(log):
 137     values = {}
 138     for line in log.split("\n"):
 139         line = line.strip()
 140         m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 141         if not m:
 142             continue
 143
 144         assignments = m.group(1).split (':')
 145         for a in assignments:
 146             vals = a.split ('=')
 147             key = vals[0].strip()
 148             val = ('='.join (vals[1:])).strip()
 149             if val.endswith ('\"') and val.startswith('"'):
 150                 val = val[1:-1]
 151
 152             values[key] = val
 153
 154     paths =  values.get("depot-path").split(',')
 155     return paths, values.get("change")
 156
 157 def gitBranchExists(branch):
 158     proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 159     return proc.wait() == 0;
 160
 161 def gitConfig(key):
 162     return read_pipe("git config %s" % key, ignore_error=True).strip()
 163
 164 class Command:
 165     def __init__(self):
 166         self.usage = "usage: %prog [options]"
 167         self.needsGit = True
 168
 169 class P4Debug(Command):
 170     def __init__(self):
 171         Command.__init__(self)
 172         self.options = [
 173             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 174             ]
 175         self.description = "A tool to debug the output of p4 -G."
 176         self.needsGit = False
 177
 178     def run(self, args):
 179         for output in p4CmdList(" ".join(args)):
 180             print output
 181         return True
 182
 183 class P4RollBack(Command):
 184     def __init__(self):
 185         Command.__init__(self)
 186         self.options = [
 187             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 188             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 189         ]
 190         self.description = "A tool to debug the multi-branch import. Don't use :)"
 191         self.verbose = False
 192         self.rollbackLocalBranches = False
 193
 194     def run(self, args):
 195         if len(args) != 1:
 196             return False
 197         maxChange = int(args[0])
 198
 199         if "p4ExitCode" in p4Cmd("changes -m 1"):
 200             die("Problems executing p4");
 201
 202         if self.rollbackLocalBranches:
 203             refPrefix = "refs/heads/"
 204             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 205         else:
 206             refPrefix = "refs/remotes/"
 207             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 208
 209         for line in lines:
 210             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 211                 line = line.strip()
 212                 ref = refPrefix + line
 213                 log = extractLogMessageFromGitCommit(ref)
 214                 depotPaths, change = extractDepotPathsAndChangeFromGitLog(log)
 215                 changed = False
 216
 217                 if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 218                                                            for p in depotPaths]))) == 0:
 219                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 220                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 221                     continue
 222
 223                 while len(change) > 0 and int(change) > maxChange:
 224                     changed = True
 225                     if self.verbose:
 226                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 227                     system("git update-ref %s \"%s^\"" % (ref, ref))
 228                     log = extractLogMessageFromGitCommit(ref)
 229                     depotPaths, change = extractDepotPathsAndChangeFromGitLog(log)
 230
 231                 if changed:
 232                     print "%s rewound to %s" % (ref, change)
 233
 234         return True
 235
 236 class P4Submit(Command):
 237     def __init__(self):
 238         Command.__init__(self)
 239         self.options = [
 240                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 241                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 242                 optparse.make_option("--origin", dest="origin"),
 243                 optparse.make_option("--reset", action="store_true", dest="reset"),
 244                 optparse.make_option("--log-substitutions", dest="substFile"),
 245                 optparse.make_option("--dry-run", action="store_true"),
 246                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 247                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 248         ]
 249         self.description = "Submit changes from git to the perforce depot."
 250         self.usage += " [name of git branch to submit into perforce depot]"
 251         self.firstTime = True
 252         self.reset = False
 253         self.interactive = True
 254         self.dryRun = False
 255         self.substFile = ""
 256         self.firstTime = True
 257         self.origin = ""
 258         self.directSubmit = False
 259         self.trustMeLikeAFool = False
 260
 261         self.logSubstitutions = {}
 262         self.logSubstitutions["<enter description here>"] = "%log%"
 263         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 264
 265     def check(self):
 266         if len(p4CmdList("opened ...")) > 0:
 267             die("You have files opened with perforce! Close them before starting the sync.")
 268
 269     def start(self):
 270         if len(self.config) > 0 and not self.reset:
 271             die("Cannot start sync. Previous sync config found at %s\n"
 272                 "If you want to start submitting again from scratch "
 273                 "maybe you want to call git-p4 submit --reset" % self.configFile)
 274
 275         commits = []
 276         if self.directSubmit:
 277             commits.append("0")
 278         else:
 279             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 280                 commits.append(line.strip())
 281             commits.reverse()
 282
 283         self.config["commits"] = commits
 284
 285     def prepareLogMessage(self, template, message):
 286         result = ""
 287
 288         for line in template.split("\n"):
 289             if line.startswith("#"):
 290                 result += line + "\n"
 291                 continue
 292
 293             substituted = False
 294             for key in self.logSubstitutions.keys():
 295                 if line.find(key) != -1:
 296                     value = self.logSubstitutions[key]
 297                     value = value.replace("%log%", message)
 298                     if value != "@remove@":
 299                         result += line.replace(key, value) + "\n"
 300                     substituted = True
 301                     break
 302
 303             if not substituted:
 304                 result += line + "\n"
 305
 306         return result
 307
 308     def applyCommit(self, id):
 309         if self.directSubmit:
 310             print "Applying local change in working directory/index"
 311             diff = self.diffStatus
 312         else:
 313             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 314             diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 315         filesToAdd = set()
 316         filesToDelete = set()
 317         editedFiles = set()
 318         for line in diff:
 319             modifier = line[0]
 320             path = line[1:].strip()
 321             if modifier == "M":
 322                 system("p4 edit \"%s\"" % path)
 323                 editedFiles.add(path)
 324             elif modifier == "A":
 325                 filesToAdd.add(path)
 326                 if path in filesToDelete:
 327                     filesToDelete.remove(path)
 328             elif modifier == "D":
 329                 filesToDelete.add(path)
 330                 if path in filesToAdd:
 331                     filesToAdd.remove(path)
 332             else:
 333                 die("unknown modifier %s for %s" % (modifier, path))
 334
 335         if self.directSubmit:
 336             diffcmd = "cat \"%s\"" % self.diffFile
 337         else:
 338             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 339         patchcmd = diffcmd + " | git apply "
 340         tryPatchCmd = patchcmd + "--check -"
 341         applyPatchCmd = patchcmd + "--check --apply -"
 342
 343         if os.system(tryPatchCmd) != 0:
 344             print "Unfortunately applying the change failed!"
 345             print "What do you want to do?"
 346             response = "x"
 347             while response != "s" and response != "a" and response != "w":
 348                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 349                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 350             if response == "s":
 351                 print "Skipping! Good luck with the next patches..."
 352                 return
 353             elif response == "a":
 354                 os.system(applyPatchCmd)
 355                 if len(filesToAdd) > 0:
 356                     print "You may also want to call p4 add on the following files:"
 357                     print " ".join(filesToAdd)
 358                 if len(filesToDelete):
 359                     print "The following files should be scheduled for deletion with p4 delete:"
 360                     print " ".join(filesToDelete)
 361                 die("Please resolve and submit the conflict manually and "
 362                     + "continue afterwards with git-p4 submit --continue")
 363             elif response == "w":
 364                 system(diffcmd + " > patch.txt")
 365                 print "Patch saved to patch.txt in %s !" % self.clientPath
 366                 die("Please resolve and submit the conflict manually and "
 367                     "continue afterwards with git-p4 submit --continue")
 368
 369         system(applyPatchCmd)
 370
 371         for f in filesToAdd:
 372             system("p4 add %s" % f)
 373         for f in filesToDelete:
 374             system("p4 revert %s" % f)
 375             system("p4 delete %s" % f)
 376
 377         logMessage = ""
 378         if not self.directSubmit:
 379             logMessage = extractLogMessageFromGitCommit(id)
 380             logMessage = logMessage.replace("\n", "\n\t")
 381             logMessage = logMessage.strip()
 382
 383         template = read_pipe("p4 change -o")
 384
 385         if self.interactive:
 386             submitTemplate = self.prepareLogMessage(template, logMessage)
 387             diff = read_pipe("p4 diff -du ...")
 388
 389             for newFile in filesToAdd:
 390                 diff += "==== new file ====\n"
 391                 diff += "--- /dev/null\n"
 392                 diff += "+++ %s\n" % newFile
 393                 f = open(newFile, "r")
 394                 for line in f.readlines():
 395                     diff += "+" + line
 396                 f.close()
 397
 398             separatorLine = "######## everything below this line is just the diff #######"
 399             if platform.system() == "Windows":
 400                 separatorLine += "\r"
 401             separatorLine += "\n"
 402
 403             response = "e"
 404             if self.trustMeLikeAFool:
 405                 response = "y"
 406
 407             firstIteration = True
 408             while response == "e":
 409                 if not firstIteration:
 410                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 411                 firstIteration = False
 412                 if response == "e":
 413                     [handle, fileName] = tempfile.mkstemp()
 414                     tmpFile = os.fdopen(handle, "w+")
 415                     tmpFile.write(submitTemplate + separatorLine + diff)
 416                     tmpFile.close()
 417                     defaultEditor = "vi"
 418                     if platform.system() == "Windows":
 419                         defaultEditor = "notepad"
 420                     editor = os.environ.get("EDITOR", defaultEditor);
 421                     system(editor + " " + fileName)
 422                     tmpFile = open(fileName, "rb")
 423                     message = tmpFile.read()
 424                     tmpFile.close()
 425                     os.remove(fileName)
 426                     submitTemplate = message[:message.index(separatorLine)]
 427
 428             if response == "y" or response == "yes":
 429                if self.dryRun:
 430                    print submitTemplate
 431                    raw_input("Press return to continue...")
 432                else:
 433                    if self.directSubmit:
 434                        print "Submitting to git first"
 435                        os.chdir(self.oldWorkingDirectory)
 436                        write_pipe("git commit -a -F -", submitTemplate)
 437                        os.chdir(self.clientPath)
 438
 439                    write_pipe("p4 submit -i", submitTemplate)
 440             elif response == "s":
 441                 for f in editedFiles:
 442                     system("p4 revert \"%s\"" % f);
 443                 for f in filesToAdd:
 444                     system("p4 revert \"%s\"" % f);
 445                     system("rm %s" %f)
 446                 for f in filesToDelete:
 447                     system("p4 delete \"%s\"" % f);
 448                 return
 449             else:
 450                 print "Not submitting!"
 451                 self.interactive = False
 452         else:
 453             fileName = "submit.txt"
 454             file = open(fileName, "w+")
 455             file.write(self.prepareLogMessage(template, logMessage))
 456             file.close()
 457             print ("Perforce submit template written as %s. "
 458                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 459                    % (fileName, fileName))
 460
 461     def run(self, args):
 462         global gitdir
 463         # make gitdir absolute so we can cd out into the perforce checkout
 464         gitdir = os.path.abspath(gitdir)
 465         os.environ["GIT_DIR"] = gitdir
 466
 467         if len(args) == 0:
 468             self.master = currentGitBranch()
 469             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 470                 die("Detecting current git branch failed!")
 471         elif len(args) == 1:
 472             self.master = args[0]
 473         else:
 474             return False
 475
 476         depotPath = ""
 477         if gitBranchExists("p4"):
 478             [depotPaths, dummy] = extractDepotPathsAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 479         if len(depotPath) == 0 and gitBranchExists("origin"):
 480             [depotPaths, dummy] = extractDepotPathsAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 481
 482         if len(depotPath) == 0:
 483             print "Internal error: cannot locate perforce depot path from existing branches"
 484             sys.exit(128)
 485
 486         self.clientPath = p4Where(depotPath)
 487
 488         if len(self.clientPath) == 0:
 489             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 490             sys.exit(128)
 491
 492         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 493         self.oldWorkingDirectory = os.getcwd()
 494
 495         if self.directSubmit:
 496             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 497             if len(self.diffStatus) == 0:
 498                 print "No changes in working directory to submit."
 499                 return True
 500             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 501             self.diffFile = gitdir + "/p4-git-diff"
 502             f = open(self.diffFile, "wb")
 503             f.write(patch)
 504             f.close();
 505
 506         os.chdir(self.clientPath)
 507         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 508         if response == "y" or response == "yes":
 509             system("p4 sync ...")
 510
 511         if len(self.origin) == 0:
 512             if gitBranchExists("p4"):
 513                 self.origin = "p4"
 514             else:
 515                 self.origin = "origin"
 516
 517         if self.reset:
 518             self.firstTime = True
 519
 520         if len(self.substFile) > 0:
 521             for line in open(self.substFile, "r").readlines():
 522                 tokens = line.strip().split("=")
 523                 self.logSubstitutions[tokens[0]] = tokens[1]
 524
 525         self.check()
 526         self.configFile = gitdir + "/p4-git-sync.cfg"
 527         self.config = shelve.open(self.configFile, writeback=True)
 528
 529         if self.firstTime:
 530             self.start()
 531
 532         commits = self.config.get("commits", [])
 533
 534         while len(commits) > 0:
 535             self.firstTime = False
 536             commit = commits[0]
 537             commits = commits[1:]
 538             self.config["commits"] = commits
 539             self.applyCommit(commit)
 540             if not self.interactive:
 541                 break
 542
 543         self.config.close()
 544
 545         if self.directSubmit:
 546             os.remove(self.diffFile)
 547
 548         if len(commits) == 0:
 549             if self.firstTime:
 550                 print "No changes found to apply between %s and current HEAD" % self.origin
 551             else:
 552                 print "All changes applied!"
 553                 os.chdir(self.oldWorkingDirectory)
 554                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 555                 if response == "y" or response == "yes":
 556                     rebase = P4Rebase()
 557                     rebase.run([])
 558             os.remove(self.configFile)
 559
 560         return True
 561
 562 class P4Sync(Command):
 563     def __init__(self):
 564         Command.__init__(self)
 565         self.options = [
 566                 optparse.make_option("--branch", dest="branch"),
 567                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 568                 optparse.make_option("--changesfile", dest="changesFile"),
 569                 optparse.make_option("--silent", dest="silent", action="store_true"),
 570                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 571                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 572                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false"),
 573                 optparse.make_option("--max-changes", dest="maxChanges"),
 574                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true')
 575         ]
 576         self.description = """Imports from Perforce into a git repository.\n
 577     example:
 578     //depot/my/project/ -- to import the current head
 579     //depot/my/project/@all -- to import everything
 580     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 581
 582     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 583
 584         self.usage += " //depot/path[@revRange]"
 585         self.silent = False
 586         self.createdBranches = Set()
 587         self.committedChanges = Set()
 588         self.branch = ""
 589         self.detectBranches = False
 590         self.detectLabels = False
 591         self.changesFile = ""
 592         self.syncWithOrigin = True
 593         self.verbose = False
 594         self.importIntoRemotes = True
 595         self.maxChanges = ""
 596         self.isWindows = (platform.system() == "Windows")
 597         self.keepRepoPath = False
 598         self.depotPaths = None
 599
 600         if gitConfig("git-p4.syncFromOrigin") == "false":
 601             self.syncWithOrigin = False
 602
 603     def p4File(self, depotPath):
 604         return read_pipe("p4 print -q \"%s\"" % depotPath)
 605
 606     def extractFilesFromCommit(self, commit):
 607         files = []
 608         fnum = 0
 609         while commit.has_key("depotFile%s" % fnum):
 610             path =  commit["depotFile%s" % fnum]
 611
 612             found = [p for p in self.depotPaths
 613                      if path.startswith (p)]
 614             if not found:
 615                 fnum = fnum + 1
 616                 continue
 617
 618             file = {}
 619             file["path"] = path
 620             file["rev"] = commit["rev%s" % fnum]
 621             file["action"] = commit["action%s" % fnum]
 622             file["type"] = commit["type%s" % fnum]
 623             files.append(file)
 624             fnum = fnum + 1
 625         return files
 626
 627     def stripRepoPath(self, path, prefixes):
 628         if self.keepRepoPath:
 629             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 630
 631         for p in prefixes:
 632             if path.startswith(p):
 633                 path = path[len(p):]
 634
 635         return path
 636
 637     def splitFilesIntoBranches(self, commit):
 638         branches = {}
 639         fnum = 0
 640         while commit.has_key("depotFile%s" % fnum):
 641             path =  commit["depotFile%s" % fnum]
 642             found = [p for p in self.depotPaths
 643                      if path.startswith (p)]
 644             if not found:
 645                 fnum = fnum + 1
 646                 continue
 647
 648             file = {}
 649             file["path"] = path
 650             file["rev"] = commit["rev%s" % fnum]
 651             file["action"] = commit["action%s" % fnum]
 652             file["type"] = commit["type%s" % fnum]
 653             fnum = fnum + 1
 654
 655             relPath = self.stripRepoPath(path, self.depotPaths)
 656
 657             for branch in self.knownBranches.keys():
 658
 659                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 660                 if relPath.startswith(branch + "/"):
 661                     if branch not in branches:
 662                         branches[branch] = []
 663                     branches[branch].append(file)
 664
 665         return branches
 666
 667     def commit(self, details, files, branch, branchPrefixes, parent = ""):
 668         epoch = details["time"]
 669         author = details["user"]
 670
 671         if self.verbose:
 672             print "commit into %s" % branch
 673
 674         self.gitStream.write("commit %s\n" % branch)
 675     #    gitStream.write("mark :%s\n" % details["change"])
 676         self.committedChanges.add(int(details["change"]))
 677         committer = ""
 678         if author not in self.users:
 679             self.getUserMapFromPerforceServer()
 680         if author in self.users:
 681             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 682         else:
 683             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 684
 685         self.gitStream.write("committer %s\n" % committer)
 686
 687         self.gitStream.write("data <<EOT\n")
 688         self.gitStream.write(details["desc"])
 689         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n"
 690                              % (','.join (branchPrefixes), details["change"]))
 691         self.gitStream.write("EOT\n\n")
 692
 693         if len(parent) > 0:
 694             if self.verbose:
 695                 print "parent %s" % parent
 696             self.gitStream.write("from %s\n" % parent)
 697
 698         for file in files:
 699             path = file["path"]
 700
 701
 702             if not [p for p in branchPrefixes if path.startswith(p)]:
 703                 continue
 704             rev = file["rev"]
 705             depotPath = path + "#" + rev
 706             relPath = self.stripRepoPath(path, branchPrefixes)
 707             action = file["action"]
 708
 709             if file["type"] == "apple":
 710                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 711                 continue
 712
 713             if action == "delete":
 714                 self.gitStream.write("D %s\n" % relPath)
 715             else:
 716                 mode = 644
 717                 if file["type"].startswith("x"):
 718                     mode = 755
 719
 720                 data = self.p4File(depotPath)
 721
 722                 if self.isWindows and file["type"].endswith("text"):
 723                     data = data.replace("\r\n", "\n")
 724
 725                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 726                 self.gitStream.write("data %s\n" % len(data))
 727                 self.gitStream.write(data)
 728                 self.gitStream.write("\n")
 729
 730         self.gitStream.write("\n")
 731
 732         change = int(details["change"])
 733
 734         if self.labels.has_key(change):
 735             label = self.labels[change]
 736             labelDetails = label[0]
 737             labelRevisions = label[1]
 738             if self.verbose:
 739                 print "Change %s is labelled %s" % (change, labelDetails)
 740
 741             files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 742                                                     for p in branchPrefixes]))
 743
 744             if len(files) == len(labelRevisions):
 745
 746                 cleanedFiles = {}
 747                 for info in files:
 748                     if info["action"] == "delete":
 749                         continue
 750                     cleanedFiles[info["depotFile"]] = info["rev"]
 751
 752                 if cleanedFiles == labelRevisions:
 753                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 754                     self.gitStream.write("from %s\n" % branch)
 755
 756                     owner = labelDetails["Owner"]
 757                     tagger = ""
 758                     if author in self.users:
 759                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 760                     else:
 761                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 762                     self.gitStream.write("tagger %s\n" % tagger)
 763                     self.gitStream.write("data <<EOT\n")
 764                     self.gitStream.write(labelDetails["Description"])
 765                     self.gitStream.write("EOT\n\n")
 766
 767                 else:
 768                     if not self.silent:
 769                         print ("Tag %s does not match with change %s: files do not match."
 770                                % (labelDetails["label"], change))
 771
 772             else:
 773                 if not self.silent:
 774                     print ("Tag %s does not match with change %s: file count is different."
 775                            % (labelDetails["label"], change))
 776
 777     def getUserMapFromPerforceServer(self):
 778         if self.userMapFromPerforceServer:
 779             return
 780         self.users = {}
 781
 782         for output in p4CmdList("users"):
 783             if not output.has_key("User"):
 784                 continue
 785             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 786
 787         cache = open(gitdir + "/p4-usercache.txt", "wb")
 788         for user in self.users.keys():
 789             cache.write("%s\t%s\n" % (user, self.users[user]))
 790         cache.close();
 791         self.userMapFromPerforceServer = True
 792
 793     def loadUserMapFromCache(self):
 794         self.users = {}
 795         self.userMapFromPerforceServer = False
 796         try:
 797             cache = open(gitdir + "/p4-usercache.txt", "rb")
 798             lines = cache.readlines()
 799             cache.close()
 800             for line in lines:
 801                 entry = line.strip().split("\t")
 802                 self.users[entry[0]] = entry[1]
 803         except IOError:
 804             self.getUserMapFromPerforceServer()
 805
 806     def getLabels(self):
 807         self.labels = {}
 808
 809         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 810         if len(l) > 0 and not self.silent:
 811             print "Finding files belonging to labels in %s" % `self.depotPath`
 812
 813         for output in l:
 814             label = output["label"]
 815             revisions = {}
 816             newestChange = 0
 817             if self.verbose:
 818                 print "Querying files for label %s" % label
 819             for file in p4CmdList("files "
 820                                   +  ' '.join (["%s...@%s" % (p, label)
 821                                                 for p in self.depotPaths])):
 822                 revisions[file["depotFile"]] = file["rev"]
 823                 change = int(file["change"])
 824                 if change > newestChange:
 825                     newestChange = change
 826
 827             self.labels[newestChange] = [output, revisions]
 828
 829         if self.verbose:
 830             print "Label changes: %s" % self.labels.keys()
 831
 832     def getBranchMapping(self):
 833
 834         ## FIXME - what's a P4 projectName ?
 835         self.projectName = self.depotPath[self.depotPath.strip().rfind("/") + 1:]
 836
 837         for info in p4CmdList("branches"):
 838             details = p4Cmd("branch -o %s" % info["branch"])
 839             viewIdx = 0
 840             while details.has_key("View%s" % viewIdx):
 841                 paths = details["View%s" % viewIdx].split(" ")
 842                 viewIdx = viewIdx + 1
 843                 # require standard //depot/foo/... //depot/bar/... mapping
 844                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 845                     continue
 846                 source = paths[0]
 847                 destination = paths[1]
 848                 if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 849                     source = source[len(self.depotPath):-4]
 850                     destination = destination[len(self.depotPath):-4]
 851                     if destination not in self.knownBranches:
 852                         self.knownBranches[destination] = source
 853                     if source not in self.knownBranches:
 854                         self.knownBranches[source] = source
 855
 856     def listExistingP4GitBranches(self):
 857         self.p4BranchesInGit = []
 858
 859         cmdline = "git rev-parse --symbolic "
 860         if self.importIntoRemotes:
 861             cmdline += " --remotes"
 862         else:
 863             cmdline += " --branches"
 864
 865         for line in read_pipe_lines(cmdline):
 866             lie = line.strip()
 867             if self.importIntoRemotes and ((not line.startswith("p4/")) or line == "p4/HEAD\n"):
 868                 continue
 869
 870             if self.importIntoRemotes:
 871                 # strip off p4
 872                 branch = re.sub ("^p4/", "", line)
 873
 874             self.p4BranchesInGit.append(branch)
 875             self.initialParents[self.refPrefix + branch] = parseRevision(line)
 876
 877     def createOrUpdateBranchesFromOrigin(self):
 878         if not self.silent:
 879             print "Creating/updating branch(es) in %s based on origin branch(es)" % self.refPrefix
 880
 881         for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 882             line = line.strip()
 883             if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 884                 continue
 885
 886             headName = line[len("origin/")]
 887             remoteHead = self.refPrefix + headName
 888             originHead = "origin/" + headName
 889
 890             [originPreviousDepotPaths, originP4Change] = extractDepotPathsAndChangeFromGitLog(extractLogMessageFromGitCommit(originHead))
 891             if len(originPreviousDepotPaths) == 0 or len(originP4Change) == 0:
 892                 continue
 893
 894             update = False
 895             if not gitBranchExists(remoteHead):
 896                 if self.verbose:
 897                     print "creating %s" % remoteHead
 898                 update = True
 899             else:
 900                 [p4PreviousDepotPaths, p4Change] = extractDepotPathsAndChangeFromGitLog(extractLogMessageFromGitCommit(remoteHead))
 901                 if len(p4Change) > 0:
 902                     if originPreviousDepotPaths == p4PreviousDepotPaths:
 903                         originP4Change = int(originP4Change)
 904                         p4Change = int(p4Change)
 905                         if originP4Change > p4Change:
 906                             print "%s (%s) is newer than %s (%s). Updating p4 branch from origin." % (originHead, originP4Change, remoteHead, p4Change)
 907                             update = True
 908                     else:
 909                         print "Ignoring: %s was imported from %s while %s was imported from %s" % (originHead, originPreviousDepotPaths, remoteHead, p4PreviousDepotPaths)
 910
 911             if update:
 912                 system("git update-ref %s %s" % (remoteHead, originHead))
 913
 914
 915     def run(self, args):
 916         self.depotPaths = []
 917         self.changeRange = ""
 918         self.initialParent = ""
 919         self.previousDepotPaths = []
 920
 921         # map from branch depot path to parent branch
 922         self.knownBranches = {}
 923         self.initialParents = {}
 924         self.hasOrigin = gitBranchExists("origin")
 925
 926         if self.importIntoRemotes:
 927             self.refPrefix = "refs/remotes/p4/"
 928         else:
 929             self.refPrefix = "refs/heads/"
 930
 931         if self.syncWithOrigin and self.hasOrigin:
 932             if not self.silent:
 933                 print "Syncing with origin first by calling git fetch origin"
 934             system("git fetch origin")
 935
 936         if len(self.branch) == 0:
 937             self.branch = self.refPrefix + "master"
 938             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
 939                 system("git update-ref %s refs/heads/p4" % self.branch)
 940                 system("git branch -D p4");
 941             # create it /after/ importing, when master exists
 942             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
 943                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
 944
 945         if args == []:
 946             if self.hasOrigin:
 947                 self.createOrUpdateBranchesFromOrigin()
 948             self.listExistingP4GitBranches()
 949
 950             if len(self.p4BranchesInGit) > 1:
 951                 if not self.silent:
 952                     print "Importing from/into multiple branches"
 953                 self.detectBranches = True
 954
 955             if self.verbose:
 956                 print "branches: %s" % self.p4BranchesInGit
 957
 958             p4Change = 0
 959             for branch in self.p4BranchesInGit:
 960                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
 961                 (depotPaths, change) = extractDepotPathsAndChangeFromGitLog(logMsg)
 962
 963                 if self.verbose:
 964                     print "path %s change %s" % (','.join(depotPaths), change)
 965
 966                 if len(depotPaths) > 0 and len(change) > 0:
 967                     change = int(change) + 1
 968                     p4Change = max(p4Change, change)
 969
 970                     if len(self.previousDepotPaths) == 0:
 971                         self.previousDepotPaths = depotPaths
 972                     else:
 973                         ## FIXME
 974                         paths = []
 975                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
 976                             for i in range(0, max(len(cur), len(prev))):
 977                                 if cur[i] <> prev[i]:
 978                                     break
 979
 980                             paths.append (cur[:i])
 981
 982                         self.previousDepotPaths = paths
 983
 984             if p4Change > 0:
 985                 self.depotPaths = self.previousDepotPaths
 986                 self.changeRange = "@%s,#head" % p4Change
 987                 self.initialParent = parseRevision(self.branch)
 988                 if not self.silent and not self.detectBranches:
 989                     print "Performing incremental import into %s git branch" % self.branch
 990
 991         if not self.branch.startswith("refs/"):
 992             self.branch = "refs/heads/" + self.branch
 993
 994         if len(args) == 0 and self.depotPaths:
 995             if not self.silent:
 996                 print "Depot paths: %s" % ' '.join(self.depotPaths)
 997         else:
 998             if self.depotPaths and self.depotPaths != args:
 999                 print ("previous import used depot path %s and now %s was specified. "
1000                        "This doesn't work!" % (' '.join (self.depotPaths),
1001                                                ' '.join (args)))
1002                 sys.exit(1)
1003
1004             self.depotPaths = args
1005
1006         self.revision = ""
1007         self.users = {}
1008
1009         newPaths = []
1010         for p in self.depotPaths:
1011             if p.find("@") != -1:
1012                 atIdx = p.index("@")
1013                 self.changeRange = p[atIdx:]
1014                 if self.changeRange == "@all":
1015                     self.changeRange = ""
1016                 elif self.changeRange.find(",") == -1:
1017                     self.revision = self.changeRange
1018                     self.changeRange = ""
1019                 p = p[0:atIdx]
1020             elif p.find("#") != -1:
1021                 hashIdx = p.index("#")
1022                 self.revision = p[hashIdx:]
1023                 p = p[0:hashIdx]
1024             elif self.previousDepotPaths == []:
1025                 self.revision = "#head"
1026
1027             p = re.sub ("\.\.\.$", "", p)
1028             if not p.endswith("/"):
1029                 p += "/"
1030
1031             newPaths.append(p)
1032
1033         self.depotPaths = newPaths
1034
1035
1036         self.loadUserMapFromCache()
1037         self.labels = {}
1038         if self.detectLabels:
1039             self.getLabels();
1040
1041         if self.detectBranches:
1042             self.getBranchMapping();
1043             if self.verbose:
1044                 print "p4-git branches: %s" % self.p4BranchesInGit
1045                 print "initial parents: %s" % self.initialParents
1046             for b in self.p4BranchesInGit:
1047                 if b != "master":
1048
1049                     ## FIXME
1050                     b = b[len(self.projectName):]
1051                 self.createdBranches.add(b)
1052
1053         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1054
1055         importProcess = subprocess.Popen(["git", "fast-import"],
1056                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1057                                          stderr=subprocess.PIPE);
1058         self.gitOutput = importProcess.stdout
1059         self.gitStream = importProcess.stdin
1060         self.gitError = importProcess.stderr
1061
1062         if len(self.revision) > 0:
1063             print "Doing initial import of %s from revision %s" % (' '.join(self.depotPaths), self.revision)
1064
1065             details = { "user" : "git perforce import user", "time" : int(time.time()) }
1066             details["desc"] = ("Initial import of %s from the state at revision %s"
1067                                % (' '.join(self.depotPaths), self.revision))
1068             details["change"] = self.revision
1069             newestRevision = 0
1070
1071             fileCnt = 0
1072             for info in p4CmdList("files "
1073                                   +  ' '.join(["%s...%s"
1074                                                % (p, self.revision)
1075                                                for p in self.depotPaths])):
1076                 change = int(info["change"])
1077                 if change > newestRevision:
1078                     newestRevision = change
1079
1080                 if info["action"] == "delete":
1081                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1082                     #fileCnt = fileCnt + 1
1083                     continue
1084
1085                 for prop in [ "depotFile", "rev", "action", "type" ]:
1086                     details["%s%s" % (prop, fileCnt)] = info[prop]
1087
1088                 fileCnt = fileCnt + 1
1089
1090             details["change"] = newestRevision
1091
1092             try:
1093                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1094             except IOError:
1095                 print "IO error with git fast-import. Is your git version recent enough?"
1096                 print self.gitError.read()
1097
1098         else:
1099             changes = []
1100
1101             if len(self.changesFile) > 0:
1102                 output = open(self.changesFile).readlines()
1103                 changeSet = Set()
1104                 for line in output:
1105                     changeSet.add(int(line))
1106
1107                 for change in changeSet:
1108                     changes.append(change)
1109
1110                 changes.sort()
1111             else:
1112                 if self.verbose:
1113                     print "Getting p4 changes for %s...%s" % (`self.depotPaths`,
1114                                                               self.changeRange)
1115                 assert self.depotPaths
1116                 output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1117                                                                     for p in self.depotPaths]))
1118
1119                 for line in output:
1120                     changeNum = line.split(" ")[1]
1121                     changes.append(changeNum)
1122
1123                 changes.reverse()
1124
1125                 if len(self.maxChanges) > 0:
1126                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1127
1128             if len(changes) == 0:
1129                 if not self.silent:
1130                     print "No changes to import!"
1131                 return True
1132
1133             self.updatedBranches = set()
1134
1135             cnt = 1
1136             for change in changes:
1137                 description = p4Cmd("describe %s" % change)
1138
1139                 if not self.silent:
1140                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1141                     sys.stdout.flush()
1142                 cnt = cnt + 1
1143
1144                 try:
1145                     if self.detectBranches:
1146                         branches = self.splitFilesIntoBranches(description)
1147                         for branch in branches.keys():
1148                             ## HACK  --hwn
1149                             branchPrefix = self.depotPaths[0] + branch + "/"
1150
1151                             parent = ""
1152
1153                             filesForCommit = branches[branch]
1154
1155                             if self.verbose:
1156                                 print "branch is %s" % branch
1157
1158                             self.updatedBranches.add(branch)
1159
1160                             if branch not in self.createdBranches:
1161                                 self.createdBranches.add(branch)
1162                                 parent = self.knownBranches[branch]
1163                                 if parent == branch:
1164                                     parent = ""
1165                                 elif self.verbose:
1166                                     print "parent determined through known branches: %s" % parent
1167
1168                             # main branch? use master
1169                             if branch == "main":
1170                                 branch = "master"
1171                             else:
1172
1173                                 ## FIXME
1174                                 branch = self.projectName + branch
1175
1176                             if parent == "main":
1177                                 parent = "master"
1178                             elif len(parent) > 0:
1179                                 ## FIXME
1180                                 parent = self.projectName + parent
1181
1182                             branch = self.refPrefix + branch
1183                             if len(parent) > 0:
1184                                 parent = self.refPrefix + parent
1185
1186                             if self.verbose:
1187                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1188
1189                             if len(parent) == 0 and branch in self.initialParents:
1190                                 parent = self.initialParents[branch]
1191                                 del self.initialParents[branch]
1192
1193                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
1194                     else:
1195                         files = self.extractFilesFromCommit(description)
1196                         self.commit(description, files, self.branch, self.depotPaths,
1197                                     self.initialParent)
1198                         self.initialParent = ""
1199                 except IOError:
1200                     print self.gitError.read()
1201                     sys.exit(1)
1202
1203             if not self.silent:
1204                 print ""
1205                 if len(self.updatedBranches) > 0:
1206                     sys.stdout.write("Updated branches: ")
1207                     for b in self.updatedBranches:
1208                         sys.stdout.write("%s " % b)
1209                     sys.stdout.write("\n")
1210
1211
1212         self.gitStream.close()
1213         if importProcess.wait() != 0:
1214             die("fast-import failed: %s" % self.gitError.read())
1215         self.gitOutput.close()
1216         self.gitError.close()
1217
1218         return True
1219
1220 class P4Rebase(Command):
1221     def __init__(self):
1222         Command.__init__(self)
1223         self.options = [ ]
1224         self.description = ("Fetches the latest revision from perforce and "
1225                             + "rebases the current work (branch) against it")
1226
1227     def run(self, args):
1228         sync = P4Sync()
1229         sync.run([])
1230         print "Rebasing the current branch"
1231         oldHead = read_pipe("git rev-parse HEAD").strip()
1232         system("git rebase p4")
1233         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1234         return True
1235
1236 class P4Clone(P4Sync):
1237     def __init__(self):
1238         P4Sync.__init__(self)
1239         self.description = "Creates a new git repository and imports from Perforce into it"
1240         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1241         self.needsGit = False
1242
1243     def run(self, args):
1244         global gitdir
1245
1246         if len(args) < 1:
1247             return False
1248         destination = ""
1249         if self.keepRepoPath:
1250             destination = args[-1]
1251             args = args[:-1]
1252         elif len(args) == 2:
1253             destination = args[1]
1254         elif len(args) > 2:
1255             return False
1256
1257         depotPaths = args
1258         for p in depotPaths:
1259             if not p.startswith("//"):
1260                 return False
1261
1262         if not destination:
1263             depotPath = args[0]
1264             depotDir = re.sub("(@[^@]*)$", "", depotPath)
1265             depotDir = re.sub("(#[^#]*)$", "", depotDir)
1266             depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1267             depotDir = re.sub(r"/$", "", depotDir)
1268
1269             destination = os.path.split(depotDir)[1]
1270
1271         print "Importing from %s into %s" % (`depotPaths`, destination)
1272         os.makedirs(destination)
1273         os.chdir(destination)
1274         system("git init")
1275         gitdir = os.getcwd() + "/.git"
1276         if not P4Sync.run(self, depotPaths):
1277             return False
1278         if self.branch != "master":
1279             if gitBranchExists("refs/remotes/p4/master"):
1280                 system("git branch master refs/remotes/p4/master")
1281                 system("git checkout -f")
1282             else:
1283                 print "Could not detect main branch. No checkout/master branch created."
1284         return True
1285
1286 class HelpFormatter(optparse.IndentedHelpFormatter):
1287     def __init__(self):
1288         optparse.IndentedHelpFormatter.__init__(self)
1289
1290     def format_description(self, description):
1291         if description:
1292             return description + "\n"
1293         else:
1294             return ""
1295
1296 def printUsage(commands):
1297     print "usage: %s <command> [options]" % sys.argv[0]
1298     print ""
1299     print "valid commands: %s" % ", ".join(commands)
1300     print ""
1301     print "Try %s <command> --help for command specific help." % sys.argv[0]
1302     print ""
1303
1304 commands = {
1305     "debug" : P4Debug(),
1306     "submit" : P4Submit(),
1307     "sync" : P4Sync(),
1308     "rebase" : P4Rebase(),
1309     "clone" : P4Clone(),
1310     "rollback" : P4RollBack()
1311 }
1312
1313 if len(sys.argv[1:]) == 0:
1314     printUsage(commands.keys())
1315     sys.exit(2)
1316
1317 cmd = ""
1318 cmdName = sys.argv[1]
1319 try:
1320     cmd = commands[cmdName]
1321 except KeyError:
1322     print "unknown command %s" % cmdName
1323     print ""
1324     printUsage(commands.keys())
1325     sys.exit(2)
1326
1327 options = cmd.options
1328 cmd.gitdir = gitdir
1329
1330 args = sys.argv[2:]
1331
1332 if len(options) > 0:
1333     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1334
1335     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1336                                    options,
1337                                    description = cmd.description,
1338                                    formatter = HelpFormatter())
1339
1340     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1341
1342 verbose = cmd.verbose
1343 if cmd.needsGit:
1344     gitdir = cmd.gitdir
1345     if len(gitdir) == 0:
1346         gitdir = ".git"
1347         if not isValidGitDir(gitdir):
1348             gitdir = read_pipe("git rev-parse --git-dir").strip()
1349             if os.path.exists(gitdir):
1350                 cdup = read_pipe("git rev-parse --show-cdup").strip()
1351                 if len(cdup) > 0:
1352                     os.chdir(cdup);
1353
1354     if not isValidGitDir(gitdir):
1355         if isValidGitDir(gitdir + "/.git"):
1356             gitdir += "/.git"
1357         else:
1358             die("fatal: cannot locate git repository at %s" % gitdir)
1359
1360     os.environ["GIT_DIR"] = gitdir
1361
1362 if not cmd.run(args):
1363     parser.print_help()