contrib/fast-import/git-p4

   1 #!/usr/bin/env python
   2 #
   3 # git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4 #
   5 # Author: Simon Hausmann <hausmann@kde.org>
   6 # Copyright: 2007 Simon Hausmann <hausmann@kde.org>
   7 #            2007 Trolltech ASA
   8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9 #
  10
  11 import optparse, sys, os, marshal, popen2, subprocess, shelve
  12 import tempfile, getopt, sha, os.path, time, platform
  13 from sets import Set;
  14
  15 gitdir = os.environ.get("GIT_DIR", "")
  16
  17 def mypopen(command):
  18     return os.popen(command, "rb");
  19
  20 def p4CmdList(cmd):
  21     cmd = "p4 -G %s" % cmd
  22     pipe = os.popen(cmd, "rb")
  23
  24     result = []
  25     try:
  26         while True:
  27             entry = marshal.load(pipe)
  28             result.append(entry)
  29     except EOFError:
  30         pass
  31     pipe.close()
  32
  33     return result
  34
  35 def p4Cmd(cmd):
  36     list = p4CmdList(cmd)
  37     result = {}
  38     for entry in list:
  39         result.update(entry)
  40     return result;
  41
  42 def p4Where(depotPath):
  43     if not depotPath.endswith("/"):
  44         depotPath += "/"
  45     output = p4Cmd("where %s..." % depotPath)
  46     clientPath = ""
  47     if "path" in output:
  48         clientPath = output.get("path")
  49     elif "data" in output:
  50         data = output.get("data")
  51         lastSpace = data.rfind(" ")
  52         clientPath = data[lastSpace + 1:]
  53
  54     if clientPath.endswith("..."):
  55         clientPath = clientPath[:-3]
  56     return clientPath
  57
  58 def die(msg):
  59     sys.stderr.write(msg + "\n")
  60     sys.exit(1)
  61
  62 def currentGitBranch():
  63     return mypopen("git name-rev HEAD").read().split(" ")[1][:-1]
  64
  65 def isValidGitDir(path):
  66     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  67         return True;
  68     return False
  69
  70 def parseRevision(ref):
  71     return mypopen("git rev-parse %s" % ref).read()[:-1]
  72
  73 def system(cmd):
  74     if os.system(cmd) != 0:
  75         die("command failed: %s" % cmd)
  76
  77 def extractLogMessageFromGitCommit(commit):
  78     logMessage = ""
  79     foundTitle = False
  80     for log in mypopen("git cat-file commit %s" % commit).readlines():
  81        if not foundTitle:
  82            if len(log) == 1:
  83                foundTitle = True
  84            continue
  85
  86        logMessage += log
  87     return logMessage
  88
  89 def extractDepotPathAndChangeFromGitLog(log):
  90     values = {}
  91     for line in log.split("\n"):
  92         line = line.strip()
  93         if line.startswith("[git-p4:") and line.endswith("]"):
  94             line = line[8:-1].strip()
  95             for assignment in line.split(":"):
  96                 variable = assignment.strip()
  97                 value = ""
  98                 equalPos = assignment.find("=")
  99                 if equalPos != -1:
 100                     variable = assignment[:equalPos].strip()
 101                     value = assignment[equalPos + 1:].strip()
 102                     if value.startswith("\"") and value.endswith("\""):
 103                         value = value[1:-1]
 104                 values[variable] = value
 105
 106     return values.get("depot-path"), values.get("change")
 107
 108 def gitBranchExists(branch):
 109     proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 110     return proc.wait() == 0;
 111
 112 class Command:
 113     def __init__(self):
 114         self.usage = "usage: %prog [options]"
 115         self.needsGit = True
 116
 117 class P4Debug(Command):
 118     def __init__(self):
 119         Command.__init__(self)
 120         self.options = [
 121         ]
 122         self.description = "A tool to debug the output of p4 -G."
 123         self.needsGit = False
 124
 125     def run(self, args):
 126         for output in p4CmdList(" ".join(args)):
 127             print output
 128         return True
 129
 130 class P4Submit(Command):
 131     def __init__(self):
 132         Command.__init__(self)
 133         self.options = [
 134                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 135                 optparse.make_option("--origin", dest="origin"),
 136                 optparse.make_option("--reset", action="store_true", dest="reset"),
 137                 optparse.make_option("--log-substitutions", dest="substFile"),
 138                 optparse.make_option("--noninteractive", action="store_false"),
 139                 optparse.make_option("--dry-run", action="store_true"),
 140         ]
 141         self.description = "Submit changes from git to the perforce depot."
 142         self.usage += " [name of git branch to submit into perforce depot]"
 143         self.firstTime = True
 144         self.reset = False
 145         self.interactive = True
 146         self.dryRun = False
 147         self.substFile = ""
 148         self.firstTime = True
 149         self.origin = ""
 150
 151         self.logSubstitutions = {}
 152         self.logSubstitutions["<enter description here>"] = "%log%"
 153         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 154
 155     def check(self):
 156         if len(p4CmdList("opened ...")) > 0:
 157             die("You have files opened with perforce! Close them before starting the sync.")
 158
 159     def start(self):
 160         if len(self.config) > 0 and not self.reset:
 161             die("Cannot start sync. Previous sync config found at %s\nIf you want to start submitting again from scratch maybe you want to call git-p4 submit --reset" % self.configFile)
 162
 163         commits = []
 164         for line in mypopen("git rev-list --no-merges %s..%s" % (self.origin, self.master)).readlines():
 165             commits.append(line[:-1])
 166         commits.reverse()
 167
 168         self.config["commits"] = commits
 169
 170     def prepareLogMessage(self, template, message):
 171         result = ""
 172
 173         for line in template.split("\n"):
 174             if line.startswith("#"):
 175                 result += line + "\n"
 176                 continue
 177
 178             substituted = False
 179             for key in self.logSubstitutions.keys():
 180                 if line.find(key) != -1:
 181                     value = self.logSubstitutions[key]
 182                     value = value.replace("%log%", message)
 183                     if value != "@remove@":
 184                         result += line.replace(key, value) + "\n"
 185                     substituted = True
 186                     break
 187
 188             if not substituted:
 189                 result += line + "\n"
 190
 191         return result
 192
 193     def apply(self, id):
 194         print "Applying %s" % (mypopen("git log --max-count=1 --pretty=oneline %s" % id).read())
 195         diff = mypopen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 196         filesToAdd = set()
 197         filesToDelete = set()
 198         editedFiles = set()
 199         for line in diff:
 200             modifier = line[0]
 201             path = line[1:].strip()
 202             if modifier == "M":
 203                 system("p4 edit \"%s\"" % path)
 204                 editedFiles.add(path)
 205             elif modifier == "A":
 206                 filesToAdd.add(path)
 207                 if path in filesToDelete:
 208                     filesToDelete.remove(path)
 209             elif modifier == "D":
 210                 filesToDelete.add(path)
 211                 if path in filesToAdd:
 212                     filesToAdd.remove(path)
 213             else:
 214                 die("unknown modifier %s for %s" % (modifier, path))
 215
 216         diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 217         patchcmd = diffcmd + " | git apply "
 218         tryPatchCmd = diffcmd + "--check -"
 219         applyPatchCmd = diffcmd + "--check --apply -"
 220         print mypopen(diffcmd).read()
 221
 222         if os.system(tryPatchCmd) != 0:
 223             print "Unfortunately applying the change failed!"
 224             print "What do you want to do?"
 225             response = "x"
 226             while response != "s" and response != "a" and response != "w":
 227                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly and with .rej files / [w]rite the patch to a file (patch.txt) ")
 228             if response == "s":
 229                 print "Skipping! Good luck with the next patches..."
 230                 return
 231             elif response == "a":
 232                 os.system(applyPatchCmd)
 233                 if len(filesToAdd) > 0:
 234                     print "You may also want to call p4 add on the following files:"
 235                     print " ".join(filesToAdd)
 236                 if len(filesToDelete):
 237                     print "The following files should be scheduled for deletion with p4 delete:"
 238                     print " ".join(filesToDelete)
 239                 die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 240             elif response == "w":
 241                 system(diffcmd + " > patch.txt")
 242                 print "Patch saved to patch.txt in %s !" % self.clientPath
 243                 die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 244
 245         system(applyPatchCmd)
 246
 247         for f in filesToAdd:
 248             system("p4 add %s" % f)
 249         for f in filesToDelete:
 250             system("p4 revert %s" % f)
 251             system("p4 delete %s" % f)
 252
 253         logMessage = extractLogMessageFromGitCommit(id)
 254         logMessage = logMessage.replace("\n", "\n\t")
 255         logMessage = logMessage[:-1]
 256
 257         template = mypopen("p4 change -o").read()
 258
 259         if self.interactive:
 260             submitTemplate = self.prepareLogMessage(template, logMessage)
 261             diff = mypopen("p4 diff -du ...").read()
 262
 263             for newFile in filesToAdd:
 264                 diff += "==== new file ====\n"
 265                 diff += "--- /dev/null\n"
 266                 diff += "+++ %s\n" % newFile
 267                 f = open(newFile, "r")
 268                 for line in f.readlines():
 269                     diff += "+" + line
 270                 f.close()
 271
 272             separatorLine = "######## everything below this line is just the diff #######"
 273             if platform.system() == "Windows":
 274                 separatorLine += "\r"
 275             separatorLine += "\n"
 276
 277             response = "e"
 278             firstIteration = True
 279             while response == "e":
 280                 if not firstIteration:
 281                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 282                 firstIteration = False
 283                 if response == "e":
 284                     [handle, fileName] = tempfile.mkstemp()
 285                     tmpFile = os.fdopen(handle, "w+")
 286                     tmpFile.write(submitTemplate + separatorLine + diff)
 287                     tmpFile.close()
 288                     defaultEditor = "vi"
 289                     if platform.system() == "Windows":
 290                         defaultEditor = "notepad"
 291                     editor = os.environ.get("EDITOR", defaultEditor);
 292                     system(editor + " " + fileName)
 293                     tmpFile = open(fileName, "rb")
 294                     message = tmpFile.read()
 295                     tmpFile.close()
 296                     os.remove(fileName)
 297                     submitTemplate = message[:message.index(separatorLine)]
 298
 299             if response == "y" or response == "yes":
 300                if self.dryRun:
 301                    print submitTemplate
 302                    raw_input("Press return to continue...")
 303                else:
 304                     pipe = os.popen("p4 submit -i", "wb")
 305                     pipe.write(submitTemplate)
 306                     pipe.close()
 307             elif response == "s":
 308                 for f in editedFiles:
 309                     system("p4 revert \"%s\"" % f);
 310                 for f in filesToAdd:
 311                     system("p4 revert \"%s\"" % f);
 312                     system("rm %s" %f)
 313                 for f in filesToDelete:
 314                     system("p4 delete \"%s\"" % f);
 315                 return
 316             else:
 317                 print "Not submitting!"
 318                 self.interactive = False
 319         else:
 320             fileName = "submit.txt"
 321             file = open(fileName, "w+")
 322             file.write(self.prepareLogMessage(template, logMessage))
 323             file.close()
 324             print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 325
 326     def run(self, args):
 327         global gitdir
 328         # make gitdir absolute so we can cd out into the perforce checkout
 329         gitdir = os.path.abspath(gitdir)
 330         os.environ["GIT_DIR"] = gitdir
 331
 332         if len(args) == 0:
 333             self.master = currentGitBranch()
 334             if len(self.master) == 0 or not os.path.exists("%s/refs/heads/%s" % (gitdir, self.master)):
 335                 die("Detecting current git branch failed!")
 336         elif len(args) == 1:
 337             self.master = args[0]
 338         else:
 339             return False
 340
 341         depotPath = ""
 342         if gitBranchExists("p4"):
 343             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 344         if len(depotPath) == 0 and gitBranchExists("origin"):
 345             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 346
 347         if len(depotPath) == 0:
 348             print "Internal error: cannot locate perforce depot path from existing branches"
 349             sys.exit(128)
 350
 351         self.clientPath = p4Where(depotPath)
 352
 353         if len(self.clientPath) == 0:
 354             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 355             sys.exit(128)
 356
 357         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 358         oldWorkingDirectory = os.getcwd()
 359         os.chdir(self.clientPath)
 360         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 361         if response == "y" or response == "yes":
 362             system("p4 sync ...")
 363
 364         if len(self.origin) == 0:
 365             if gitBranchExists("p4"):
 366                 self.origin = "p4"
 367             else:
 368                 self.origin = "origin"
 369
 370         if self.reset:
 371             self.firstTime = True
 372
 373         if len(self.substFile) > 0:
 374             for line in open(self.substFile, "r").readlines():
 375                 tokens = line[:-1].split("=")
 376                 self.logSubstitutions[tokens[0]] = tokens[1]
 377
 378         self.check()
 379         self.configFile = gitdir + "/p4-git-sync.cfg"
 380         self.config = shelve.open(self.configFile, writeback=True)
 381
 382         if self.firstTime:
 383             self.start()
 384
 385         commits = self.config.get("commits", [])
 386
 387         while len(commits) > 0:
 388             self.firstTime = False
 389             commit = commits[0]
 390             commits = commits[1:]
 391             self.config["commits"] = commits
 392             self.apply(commit)
 393             if not self.interactive:
 394                 break
 395
 396         self.config.close()
 397
 398         if len(commits) == 0:
 399             if self.firstTime:
 400                 print "No changes found to apply between %s and current HEAD" % self.origin
 401             else:
 402                 print "All changes applied!"
 403                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 404                 if response == "y" or response == "yes":
 405                     os.chdir(oldWorkingDirectory)
 406                     rebase = P4Rebase()
 407                     rebase.run([])
 408             os.remove(self.configFile)
 409
 410         return True
 411
 412 class P4Sync(Command):
 413     def __init__(self):
 414         Command.__init__(self)
 415         self.options = [
 416                 optparse.make_option("--branch", dest="branch"),
 417                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 418                 optparse.make_option("--changesfile", dest="changesFile"),
 419                 optparse.make_option("--silent", dest="silent", action="store_true"),
 420                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 421                 optparse.make_option("--with-origin", dest="syncWithOrigin", action="store_true"),
 422                 optparse.make_option("--verbose", dest="verbose", action="store_true")
 423         ]
 424         self.description = """Imports from Perforce into a git repository.\n
 425     example:
 426     //depot/my/project/ -- to import the current head
 427     //depot/my/project/@all -- to import everything
 428     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 429
 430     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 431
 432         self.usage += " //depot/path[@revRange]"
 433
 434         self.silent = False
 435         self.createdBranches = Set()
 436         self.committedChanges = Set()
 437         self.branch = ""
 438         self.detectBranches = False
 439         self.detectLabels = False
 440         self.changesFile = ""
 441         self.syncWithOrigin = False
 442         self.verbose = False
 443
 444     def p4File(self, depotPath):
 445         return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 446
 447     def extractFilesFromCommit(self, commit):
 448         files = []
 449         fnum = 0
 450         while commit.has_key("depotFile%s" % fnum):
 451             path =  commit["depotFile%s" % fnum]
 452             if not path.startswith(self.depotPath):
 453     #            if not self.silent:
 454     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 455                 fnum = fnum + 1
 456                 continue
 457
 458             file = {}
 459             file["path"] = path
 460             file["rev"] = commit["rev%s" % fnum]
 461             file["action"] = commit["action%s" % fnum]
 462             file["type"] = commit["type%s" % fnum]
 463             files.append(file)
 464             fnum = fnum + 1
 465         return files
 466
 467     def splitFilesIntoBranches(self, commit):
 468         branches = {}
 469
 470         fnum = 0
 471         while commit.has_key("depotFile%s" % fnum):
 472             path =  commit["depotFile%s" % fnum]
 473             if not path.startswith(self.depotPath):
 474     #            if not self.silent:
 475     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 476                 fnum = fnum + 1
 477                 continue
 478
 479             file = {}
 480             file["path"] = path
 481             file["rev"] = commit["rev%s" % fnum]
 482             file["action"] = commit["action%s" % fnum]
 483             file["type"] = commit["type%s" % fnum]
 484             fnum = fnum + 1
 485
 486             relPath = path[len(self.depotPath):]
 487
 488             for branch in self.knownBranches.keys():
 489                 if relPath.startswith(branch):
 490                     if branch not in branches:
 491                         branches[branch] = []
 492                     branches[branch].append(file)
 493
 494         return branches
 495
 496     def commit(self, details, files, branch, branchPrefix, parent = ""):
 497         epoch = details["time"]
 498         author = details["user"]
 499
 500         if self.verbose:
 501             print "commit into %s" % branch
 502
 503         self.gitStream.write("commit %s\n" % branch)
 504     #    gitStream.write("mark :%s\n" % details["change"])
 505         self.committedChanges.add(int(details["change"]))
 506         committer = ""
 507         if author not in self.users:
 508             self.getUserMapFromPerforceServer()
 509         if author in self.users:
 510             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 511         else:
 512             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 513
 514         self.gitStream.write("committer %s\n" % committer)
 515
 516         self.gitStream.write("data <<EOT\n")
 517         self.gitStream.write(details["desc"])
 518         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 519         self.gitStream.write("EOT\n\n")
 520
 521         if len(parent) > 0:
 522             if self.verbose:
 523                 print "parent %s" % parent
 524             self.gitStream.write("from %s\n" % parent)
 525
 526         for file in files:
 527             path = file["path"]
 528             if not path.startswith(branchPrefix):
 529     #            if not silent:
 530     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 531                 continue
 532             rev = file["rev"]
 533             depotPath = path + "#" + rev
 534             relPath = path[len(branchPrefix):]
 535             action = file["action"]
 536
 537             if file["type"] == "apple":
 538                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 539                 continue
 540
 541             if action == "delete":
 542                 self.gitStream.write("D %s\n" % relPath)
 543             else:
 544                 mode = 644
 545                 if file["type"].startswith("x"):
 546                     mode = 755
 547
 548                 data = self.p4File(depotPath)
 549
 550                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 551                 self.gitStream.write("data %s\n" % len(data))
 552                 self.gitStream.write(data)
 553                 self.gitStream.write("\n")
 554
 555         self.gitStream.write("\n")
 556
 557         change = int(details["change"])
 558
 559         if self.labels.has_key(change):
 560             label = self.labels[change]
 561             labelDetails = label[0]
 562             labelRevisions = label[1]
 563             if self.verbose:
 564                 print "Change %s is labelled %s" % (change, labelDetails)
 565
 566             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 567
 568             if len(files) == len(labelRevisions):
 569
 570                 cleanedFiles = {}
 571                 for info in files:
 572                     if info["action"] == "delete":
 573                         continue
 574                     cleanedFiles[info["depotFile"]] = info["rev"]
 575
 576                 if cleanedFiles == labelRevisions:
 577                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 578                     self.gitStream.write("from %s\n" % branch)
 579
 580                     owner = labelDetails["Owner"]
 581                     tagger = ""
 582                     if author in self.users:
 583                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 584                     else:
 585                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 586                     self.gitStream.write("tagger %s\n" % tagger)
 587                     self.gitStream.write("data <<EOT\n")
 588                     self.gitStream.write(labelDetails["Description"])
 589                     self.gitStream.write("EOT\n\n")
 590
 591                 else:
 592                     if not self.silent:
 593                         print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 594
 595             else:
 596                 if not self.silent:
 597                     print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 598
 599     def getUserMapFromPerforceServer(self):
 600         self.users = {}
 601
 602         for output in p4CmdList("users"):
 603             if not output.has_key("User"):
 604                 continue
 605             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 606
 607         cache = open(gitdir + "/p4-usercache.txt", "wb")
 608         for user in self.users.keys():
 609             cache.write("%s\t%s\n" % (user, self.users[user]))
 610         cache.close();
 611
 612     def loadUserMapFromCache(self):
 613         self.users = {}
 614         try:
 615             cache = open(gitdir + "/p4-usercache.txt", "rb")
 616             lines = cache.readlines()
 617             cache.close()
 618             for line in lines:
 619                 entry = line[:-1].split("\t")
 620                 self.users[entry[0]] = entry[1]
 621         except IOError:
 622             self.getUserMapFromPerforceServer()
 623
 624     def getLabels(self):
 625         self.labels = {}
 626
 627         l = p4CmdList("labels %s..." % self.depotPath)
 628         if len(l) > 0 and not self.silent:
 629             print "Finding files belonging to labels in %s" % self.depotPath
 630
 631         for output in l:
 632             label = output["label"]
 633             revisions = {}
 634             newestChange = 0
 635             if self.verbose:
 636                 print "Querying files for label %s" % label
 637             for file in p4CmdList("files %s...@%s" % (self.depotPath, label)):
 638                 revisions[file["depotFile"]] = file["rev"]
 639                 change = int(file["change"])
 640                 if change > newestChange:
 641                     newestChange = change
 642
 643             self.labels[newestChange] = [output, revisions]
 644
 645         if self.verbose:
 646             print "Label changes: %s" % self.labels.keys()
 647
 648     def getBranchMapping(self):
 649         self.projectName = self.depotPath[self.depotPath[:-1].rfind("/") + 1:]
 650
 651         for info in p4CmdList("branches"):
 652             details = p4Cmd("branch -o %s" % info["branch"])
 653             viewIdx = 0
 654             while details.has_key("View%s" % viewIdx):
 655                 paths = details["View%s" % viewIdx].split(" ")
 656                 viewIdx = viewIdx + 1
 657                 # require standard //depot/foo/... //depot/bar/... mapping
 658                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 659                     continue
 660                 source = paths[0]
 661                 destination = paths[1]
 662                 if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 663                     source = source[len(self.depotPath):-4]
 664                     destination = destination[len(self.depotPath):-4]
 665                     if destination not in self.knownBranches:
 666                         self.knownBranches[destination] = source
 667                     if source not in self.knownBranches:
 668                         self.knownBranches[source] = source
 669
 670     def listExistingP4GitBranches(self):
 671         self.p4BranchesInGit = []
 672
 673         for line in mypopen("git rev-parse --symbolic --remotes").readlines():
 674             if line.startswith("p4/") and line != "p4/HEAD\n":
 675                 branch = line[3:-1]
 676                 self.p4BranchesInGit.append(branch)
 677                 self.initialParents["refs/remotes/p4/" + branch] = parseRevision(line[:-1])
 678
 679     def run(self, args):
 680         self.depotPath = ""
 681         self.changeRange = ""
 682         self.initialParent = ""
 683         self.previousDepotPath = ""
 684         # map from branch depot path to parent branch
 685         self.knownBranches = {}
 686         self.initialParents = {}
 687
 688         self.listExistingP4GitBranches()
 689
 690         if self.syncWithOrigin and gitBranchExists("origin") and gitBranchExists("refs/remotes/p4/master") and not self.detectBranches:
 691             ### needs to be ported to multi branch import
 692
 693             print "Syncing with origin first as requested by calling git fetch origin"
 694             system("git fetch origin")
 695             [originPreviousDepotPath, originP4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 696             [p4PreviousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 697             if len(originPreviousDepotPath) > 0 and len(originP4Change) > 0 and len(p4Change) > 0:
 698                 if originPreviousDepotPath == p4PreviousDepotPath:
 699                     originP4Change = int(originP4Change)
 700                     p4Change = int(p4Change)
 701                     if originP4Change > p4Change:
 702                         print "origin (%s) is newer than p4 (%s). Updating p4 branch from origin." % (originP4Change, p4Change)
 703                         system("git update-ref refs/remotes/p4/master origin");
 704                 else:
 705                     print "Cannot sync with origin. It was imported from %s while remotes/p4 was imported from %s" % (originPreviousDepotPath, p4PreviousDepotPath)
 706
 707         if len(self.branch) == 0:
 708             self.branch = "refs/remotes/p4/master"
 709             if gitBranchExists("refs/heads/p4"):
 710                 system("git update-ref %s refs/heads/p4" % self.branch)
 711                 system("git branch -D p4");
 712             if not gitBranchExists("refs/remotes/p4/HEAD"):
 713                 system("git symbolic-ref refs/remotes/p4/HEAD %s" % self.branch)
 714
 715         if len(args) == 0:
 716             if not gitBranchExists(self.branch) and gitBranchExists("origin") and not self.detectBranches:
 717                 ### needs to be ported to multi branch import
 718                 if not self.silent:
 719                     print "Creating %s branch in git repository based on origin" % self.branch
 720                 branch = self.branch
 721                 if not branch.startswith("refs"):
 722                     branch = "refs/heads/" + branch
 723                 system("git update-ref %s origin" % branch)
 724
 725             if self.verbose:
 726                 print "branches: %s" % self.p4BranchesInGit
 727
 728             p4Change = 0
 729             for branch in self.p4BranchesInGit:
 730                 depotPath, change = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("refs/remotes/p4/" + branch))
 731
 732                 if self.verbose:
 733                     print "path %s change %s" % (depotPath, change)
 734
 735                 if len(depotPath) > 0 and len(change) > 0:
 736                     change = int(change) + 1
 737                     p4Change = max(p4Change, change)
 738
 739                     if len(self.previousDepotPath) == 0:
 740                         self.previousDepotPath = depotPath
 741                     else:
 742                         i = 0
 743                         l = min(len(self.previousDepotPath), len(depotPath))
 744                         while i < l and self.previousDepotPath[i] == depotPath[i]:
 745                             i = i + 1
 746                         self.previousDepotPath = self.previousDepotPath[:i]
 747
 748             if p4Change > 0:
 749                 self.depotPath = self.previousDepotPath
 750                 self.changeRange = "@%s,#head" % p4Change
 751                 self.initialParent = parseRevision(self.branch)
 752                 if not self.silent:
 753                     print "Performing incremental import into %s git branch" % self.branch
 754
 755         if not self.branch.startswith("refs/"):
 756             self.branch = "refs/heads/" + self.branch
 757
 758         if len(self.depotPath) != 0:
 759             self.depotPath = self.depotPath[:-1]
 760
 761         if len(args) == 0 and len(self.depotPath) != 0:
 762             if not self.silent:
 763                 print "Depot path: %s" % self.depotPath
 764         elif len(args) != 1:
 765             return False
 766         else:
 767             if len(self.depotPath) != 0 and self.depotPath != args[0]:
 768                 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.depotPath, args[0])
 769                 sys.exit(1)
 770             self.depotPath = args[0]
 771
 772         self.revision = ""
 773         self.users = {}
 774
 775         if self.depotPath.find("@") != -1:
 776             atIdx = self.depotPath.index("@")
 777             self.changeRange = self.depotPath[atIdx:]
 778             if self.changeRange == "@all":
 779                 self.changeRange = ""
 780             elif self.changeRange.find(",") == -1:
 781                 self.revision = self.changeRange
 782                 self.changeRange = ""
 783             self.depotPath = self.depotPath[0:atIdx]
 784         elif self.depotPath.find("#") != -1:
 785             hashIdx = self.depotPath.index("#")
 786             self.revision = self.depotPath[hashIdx:]
 787             self.depotPath = self.depotPath[0:hashIdx]
 788         elif len(self.previousDepotPath) == 0:
 789             self.revision = "#head"
 790
 791         if self.depotPath.endswith("..."):
 792             self.depotPath = self.depotPath[:-3]
 793
 794         if not self.depotPath.endswith("/"):
 795             self.depotPath += "/"
 796
 797         self.loadUserMapFromCache()
 798         self.labels = {}
 799         if self.detectLabels:
 800             self.getLabels();
 801
 802         if self.detectBranches:
 803             self.getBranchMapping();
 804             if self.verbose:
 805                 print "p4-git branches: %s" % self.p4BranchesInGit
 806                 print "initial parents: %s" % self.initialParents
 807             for b in self.p4BranchesInGit:
 808                 if b != "master":
 809                     b = b[len(self.projectName):]
 810                 self.createdBranches.add(b)
 811
 812         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
 813
 814         importProcess = subprocess.Popen(["git", "fast-import"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE);
 815         self.gitOutput = importProcess.stdout
 816         self.gitStream = importProcess.stdin
 817         self.gitError = importProcess.stderr
 818
 819         if len(self.revision) > 0:
 820             print "Doing initial import of %s from revision %s" % (self.depotPath, self.revision)
 821
 822             details = { "user" : "git perforce import user", "time" : int(time.time()) }
 823             details["desc"] = "Initial import of %s from the state at revision %s" % (self.depotPath, self.revision)
 824             details["change"] = self.revision
 825             newestRevision = 0
 826
 827             fileCnt = 0
 828             for info in p4CmdList("files %s...%s" % (self.depotPath, self.revision)):
 829                 change = int(info["change"])
 830                 if change > newestRevision:
 831                     newestRevision = change
 832
 833                 if info["action"] == "delete":
 834                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
 835                     #fileCnt = fileCnt + 1
 836                     continue
 837
 838                 for prop in [ "depotFile", "rev", "action", "type" ]:
 839                     details["%s%s" % (prop, fileCnt)] = info[prop]
 840
 841                 fileCnt = fileCnt + 1
 842
 843             details["change"] = newestRevision
 844
 845             try:
 846                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPath)
 847             except IOError:
 848                 print "IO error with git fast-import. Is your git version recent enough?"
 849                 print self.gitError.read()
 850
 851         else:
 852             changes = []
 853
 854             if len(self.changesFile) > 0:
 855                 output = open(self.changesFile).readlines()
 856                 changeSet = Set()
 857                 for line in output:
 858                     changeSet.add(int(line))
 859
 860                 for change in changeSet:
 861                     changes.append(change)
 862
 863                 changes.sort()
 864             else:
 865                 if self.verbose:
 866                     print "Getting p4 changes for %s...%s" % (self.depotPath, self.changeRange)
 867                 output = mypopen("p4 changes %s...%s" % (self.depotPath, self.changeRange)).readlines()
 868
 869                 for line in output:
 870                     changeNum = line.split(" ")[1]
 871                     changes.append(changeNum)
 872
 873                 changes.reverse()
 874
 875             if len(changes) == 0:
 876                 if not self.silent:
 877                     print "no changes to import!"
 878                 return True
 879
 880             cnt = 1
 881             for change in changes:
 882                 description = p4Cmd("describe %s" % change)
 883
 884                 if not self.silent:
 885                     sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 886                     sys.stdout.flush()
 887                 cnt = cnt + 1
 888
 889                 try:
 890                     if self.detectBranches:
 891                         branches = self.splitFilesIntoBranches(description)
 892                         for branch in branches.keys():
 893                             branchPrefix = self.depotPath + branch + "/"
 894
 895                             parent = ""
 896
 897                             filesForCommit = branches[branch]
 898
 899                             if self.verbose:
 900                                 print "branch is %s" % branch
 901
 902                             if branch not in self.createdBranches:
 903                                 self.createdBranches.add(branch)
 904                                 parent = self.knownBranches[branch]
 905                                 if parent == branch:
 906                                     parent = ""
 907                                 elif self.verbose:
 908                                     print "parent determined through known branches: %s" % parent
 909
 910                             # main branch? use master
 911                             if branch == "main":
 912                                 branch = "master"
 913                             else:
 914                                 branch = self.projectName + branch
 915
 916                             if parent == "main":
 917                                 parent = "master"
 918                             elif len(parent) > 0:
 919                                 parent = self.projectName + parent
 920
 921                             branch = "refs/remotes/p4/" + branch
 922                             if len(parent) > 0:
 923                                 parent = "refs/remotes/p4/" + parent
 924
 925                             if self.verbose:
 926                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
 927
 928                             if len(parent) == 0 and branch in self.initialParents:
 929                                 parent = self.initialParents[branch]
 930                                 del self.initialParents[branch]
 931
 932                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
 933                     else:
 934                         files = self.extractFilesFromCommit(description)
 935                         self.commit(description, files, self.branch, self.depotPath, self.initialParent)
 936                         self.initialParent = ""
 937                 except IOError:
 938                     print self.gitError.read()
 939                     sys.exit(1)
 940
 941         if not self.silent:
 942             print ""
 943
 944
 945         self.gitStream.close()
 946         if importProcess.wait() != 0:
 947             die("fast-import failed: %s" % self.gitError.read())
 948         self.gitOutput.close()
 949         self.gitError.close()
 950
 951         return True
 952
 953 class P4Rebase(Command):
 954     def __init__(self):
 955         Command.__init__(self)
 956         self.options = [ optparse.make_option("--with-origin", dest="syncWithOrigin", action="store_true") ]
 957         self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
 958         self.syncWithOrigin = False
 959
 960     def run(self, args):
 961         sync = P4Sync()
 962         sync.syncWithOrigin = self.syncWithOrigin
 963         sync.run([])
 964         print "Rebasing the current branch"
 965         oldHead = mypopen("git rev-parse HEAD").read()[:-1]
 966         system("git rebase p4")
 967         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
 968         return True
 969
 970 class P4Clone(P4Sync):
 971     def __init__(self):
 972         P4Sync.__init__(self)
 973         self.description = "Creates a new git repository and imports from Perforce into it"
 974         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
 975         self.needsGit = False
 976
 977     def run(self, args):
 978         global gitdir
 979
 980         if len(args) < 1:
 981             return False
 982         depotPath = args[0]
 983         dir = ""
 984         if len(args) == 2:
 985             dir = args[1]
 986         elif len(args) > 2:
 987             return False
 988
 989         if not depotPath.startswith("//"):
 990             return False
 991
 992         if len(dir) == 0:
 993             dir = depotPath
 994             atPos = dir.rfind("@")
 995             if atPos != -1:
 996                 dir = dir[0:atPos]
 997             hashPos = dir.rfind("#")
 998             if hashPos != -1:
 999                 dir = dir[0:hashPos]
1000
1001             if dir.endswith("..."):
1002                 dir = dir[:-3]
1003
1004             if dir.endswith("/"):
1005                dir = dir[:-1]
1006
1007             slashPos = dir.rfind("/")
1008             if slashPos != -1:
1009                 dir = dir[slashPos + 1:]
1010
1011         print "Importing from %s into %s" % (depotPath, dir)
1012         os.makedirs(dir)
1013         os.chdir(dir)
1014         system("git init")
1015         gitdir = os.getcwd() + "/.git"
1016         if not P4Sync.run(self, [depotPath]):
1017             return False
1018         if self.branch != "master":
1019             if gitBranchExists("refs/remotes/p4/master"):
1020                 system("git branch master refs/remotes/p4/master")
1021                 system("git checkout -f")
1022             else:
1023                 print "Could not detect main branch. No checkout/master branch created."
1024         return True
1025
1026 class HelpFormatter(optparse.IndentedHelpFormatter):
1027     def __init__(self):
1028         optparse.IndentedHelpFormatter.__init__(self)
1029
1030     def format_description(self, description):
1031         if description:
1032             return description + "\n"
1033         else:
1034             return ""
1035
1036 def printUsage(commands):
1037     print "usage: %s <command> [options]" % sys.argv[0]
1038     print ""
1039     print "valid commands: %s" % ", ".join(commands)
1040     print ""
1041     print "Try %s <command> --help for command specific help." % sys.argv[0]
1042     print ""
1043
1044 commands = {
1045     "debug" : P4Debug(),
1046     "submit" : P4Submit(),
1047     "sync" : P4Sync(),
1048     "rebase" : P4Rebase(),
1049     "clone" : P4Clone()
1050 }
1051
1052 if len(sys.argv[1:]) == 0:
1053     printUsage(commands.keys())
1054     sys.exit(2)
1055
1056 cmd = ""
1057 cmdName = sys.argv[1]
1058 try:
1059     cmd = commands[cmdName]
1060 except KeyError:
1061     print "unknown command %s" % cmdName
1062     print ""
1063     printUsage(commands.keys())
1064     sys.exit(2)
1065
1066 options = cmd.options
1067 cmd.gitdir = gitdir
1068
1069 args = sys.argv[2:]
1070
1071 if len(options) > 0:
1072     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1073
1074     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1075                                    options,
1076                                    description = cmd.description,
1077                                    formatter = HelpFormatter())
1078
1079     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1080
1081 if cmd.needsGit:
1082     gitdir = cmd.gitdir
1083     if len(gitdir) == 0:
1084         gitdir = ".git"
1085         if not isValidGitDir(gitdir):
1086             gitdir = mypopen("git rev-parse --git-dir").read()[:-1]
1087             if os.path.exists(gitdir):
1088                 cdup = mypopen("git rev-parse --show-cdup").read()[:-1];
1089                 if len(cdup) > 0:
1090                     os.chdir(cdup);
1091
1092     if not isValidGitDir(gitdir):
1093         if isValidGitDir(gitdir + "/.git"):
1094             gitdir += "/.git"
1095         else:
1096             die("fatal: cannot locate git repository at %s" % gitdir)
1097
1098     os.environ["GIT_DIR"] = gitdir
1099
1100 if not cmd.run(args):
1101     parser.print_help()
1102