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 # TODO: * Consider making --with-origin the default, assuming that the git
  11 #         protocol is always more efficient. (needs manual testing first :)
  12 #
  13
  14 import optparse, sys, os, marshal, popen2, subprocess, shelve
  15 import tempfile, getopt, sha, os.path, time, platform
  16 from sets import Set;
  17
  18 gitdir = os.environ.get("GIT_DIR", "")
  19
  20 def mypopen(command):
  21     return os.popen(command, "rb");
  22
  23 def p4CmdList(cmd):
  24     cmd = "p4 -G %s" % cmd
  25     pipe = os.popen(cmd, "rb")
  26
  27     result = []
  28     try:
  29         while True:
  30             entry = marshal.load(pipe)
  31             result.append(entry)
  32     except EOFError:
  33         pass
  34     exitCode = pipe.close()
  35     if exitCode != None:
  36         entry = {}
  37         entry["p4ExitCode"] = exitCode
  38         result.append(entry)
  39
  40     return result
  41
  42 def p4Cmd(cmd):
  43     list = p4CmdList(cmd)
  44     result = {}
  45     for entry in list:
  46         result.update(entry)
  47     return result;
  48
  49 def p4Where(depotPath):
  50     if not depotPath.endswith("/"):
  51         depotPath += "/"
  52     output = p4Cmd("where %s..." % depotPath)
  53     if output["code"] == "error":
  54         return ""
  55     clientPath = ""
  56     if "path" in output:
  57         clientPath = output.get("path")
  58     elif "data" in output:
  59         data = output.get("data")
  60         lastSpace = data.rfind(" ")
  61         clientPath = data[lastSpace + 1:]
  62
  63     if clientPath.endswith("..."):
  64         clientPath = clientPath[:-3]
  65     return clientPath
  66
  67 def die(msg):
  68     sys.stderr.write(msg + "\n")
  69     sys.exit(1)
  70
  71 def currentGitBranch():
  72     return mypopen("git name-rev HEAD").read().split(" ")[1][:-1]
  73
  74 def isValidGitDir(path):
  75     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  76         return True;
  77     return False
  78
  79 def parseRevision(ref):
  80     return mypopen("git rev-parse %s" % ref).read()[:-1]
  81
  82 def system(cmd):
  83     if os.system(cmd) != 0:
  84         die("command failed: %s" % cmd)
  85
  86 def extractLogMessageFromGitCommit(commit):
  87     logMessage = ""
  88     foundTitle = False
  89     for log in mypopen("git cat-file commit %s" % commit).readlines():
  90        if not foundTitle:
  91            if len(log) == 1:
  92                foundTitle = True
  93            continue
  94
  95        logMessage += log
  96     return logMessage
  97
  98 def extractDepotPathAndChangeFromGitLog(log):
  99     values = {}
 100     for line in log.split("\n"):
 101         line = line.strip()
 102         if line.startswith("[git-p4:") and line.endswith("]"):
 103             line = line[8:-1].strip()
 104             for assignment in line.split(":"):
 105                 variable = assignment.strip()
 106                 value = ""
 107                 equalPos = assignment.find("=")
 108                 if equalPos != -1:
 109                     variable = assignment[:equalPos].strip()
 110                     value = assignment[equalPos + 1:].strip()
 111                     if value.startswith("\"") and value.endswith("\""):
 112                         value = value[1:-1]
 113                 values[variable] = value
 114
 115     return values.get("depot-path"), values.get("change")
 116
 117 def gitBranchExists(branch):
 118     proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 119     return proc.wait() == 0;
 120
 121 class Command:
 122     def __init__(self):
 123         self.usage = "usage: %prog [options]"
 124         self.needsGit = True
 125
 126 class P4Debug(Command):
 127     def __init__(self):
 128         Command.__init__(self)
 129         self.options = [
 130         ]
 131         self.description = "A tool to debug the output of p4 -G."
 132         self.needsGit = False
 133
 134     def run(self, args):
 135         for output in p4CmdList(" ".join(args)):
 136             print output
 137         return True
 138
 139 class P4RollBack(Command):
 140     def __init__(self):
 141         Command.__init__(self)
 142         self.options = [
 143             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 144             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 145         ]
 146         self.description = "A tool to debug the multi-branch import. Don't use :)"
 147         self.verbose = False
 148         self.rollbackLocalBranches = False
 149
 150     def run(self, args):
 151         if len(args) != 1:
 152             return False
 153         maxChange = int(args[0])
 154
 155         if "p4ExitCode" in p4Cmd("changes -m 1"):
 156             die("Problems executing p4");
 157
 158         if self.rollbackLocalBranches:
 159             refPrefix = "refs/heads/"
 160             lines = mypopen("git rev-parse --symbolic --branches").readlines()
 161         else:
 162             refPrefix = "refs/remotes/"
 163             lines = mypopen("git rev-parse --symbolic --remotes").readlines()
 164
 165         for line in lines:
 166             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 167                 ref = refPrefix + line[:-1]
 168                 log = extractLogMessageFromGitCommit(ref)
 169                 depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 170                 changed = False
 171
 172                 if len(p4Cmd("changes -m 1 %s...@%s" % (depotPath, maxChange))) == 0:
 173                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 174                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 175                     continue
 176
 177                 while len(change) > 0 and int(change) > maxChange:
 178                     changed = True
 179                     if self.verbose:
 180                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 181                     system("git update-ref %s \"%s^\"" % (ref, ref))
 182                     log = extractLogMessageFromGitCommit(ref)
 183                     depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 184
 185                 if changed:
 186                     print "%s rewound to %s" % (ref, change)
 187
 188         return True
 189
 190 class P4Submit(Command):
 191     def __init__(self):
 192         Command.__init__(self)
 193         self.options = [
 194                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 195                 optparse.make_option("--origin", dest="origin"),
 196                 optparse.make_option("--reset", action="store_true", dest="reset"),
 197                 optparse.make_option("--log-substitutions", dest="substFile"),
 198                 optparse.make_option("--noninteractive", action="store_false"),
 199                 optparse.make_option("--dry-run", action="store_true"),
 200                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 201         ]
 202         self.description = "Submit changes from git to the perforce depot."
 203         self.usage += " [name of git branch to submit into perforce depot]"
 204         self.firstTime = True
 205         self.reset = False
 206         self.interactive = True
 207         self.dryRun = False
 208         self.substFile = ""
 209         self.firstTime = True
 210         self.origin = ""
 211         self.directSubmit = False
 212
 213         self.logSubstitutions = {}
 214         self.logSubstitutions["<enter description here>"] = "%log%"
 215         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 216
 217     def check(self):
 218         if len(p4CmdList("opened ...")) > 0:
 219             die("You have files opened with perforce! Close them before starting the sync.")
 220
 221     def start(self):
 222         if len(self.config) > 0 and not self.reset:
 223             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)
 224
 225         commits = []
 226         if self.directSubmit:
 227             commits.append("0")
 228         else:
 229             for line in mypopen("git rev-list --no-merges %s..%s" % (self.origin, self.master)).readlines():
 230                 commits.append(line[:-1])
 231             commits.reverse()
 232
 233         self.config["commits"] = commits
 234
 235     def prepareLogMessage(self, template, message):
 236         result = ""
 237
 238         for line in template.split("\n"):
 239             if line.startswith("#"):
 240                 result += line + "\n"
 241                 continue
 242
 243             substituted = False
 244             for key in self.logSubstitutions.keys():
 245                 if line.find(key) != -1:
 246                     value = self.logSubstitutions[key]
 247                     value = value.replace("%log%", message)
 248                     if value != "@remove@":
 249                         result += line.replace(key, value) + "\n"
 250                     substituted = True
 251                     break
 252
 253             if not substituted:
 254                 result += line + "\n"
 255
 256         return result
 257
 258     def apply(self, id):
 259         if self.directSubmit:
 260             print "Applying local change in working directory/index"
 261             diff = self.diffStatus
 262         else:
 263             print "Applying %s" % (mypopen("git log --max-count=1 --pretty=oneline %s" % id).read())
 264             diff = mypopen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 265         filesToAdd = set()
 266         filesToDelete = set()
 267         editedFiles = set()
 268         for line in diff:
 269             modifier = line[0]
 270             path = line[1:].strip()
 271             if modifier == "M":
 272                 system("p4 edit \"%s\"" % path)
 273                 editedFiles.add(path)
 274             elif modifier == "A":
 275                 filesToAdd.add(path)
 276                 if path in filesToDelete:
 277                     filesToDelete.remove(path)
 278             elif modifier == "D":
 279                 filesToDelete.add(path)
 280                 if path in filesToAdd:
 281                     filesToAdd.remove(path)
 282             else:
 283                 die("unknown modifier %s for %s" % (modifier, path))
 284
 285         if self.directSubmit:
 286             diffcmd = "cat \"%s\"" % self.diffFile
 287         else:
 288             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 289         patchcmd = diffcmd + " | git apply "
 290         tryPatchCmd = patchcmd + "--check -"
 291         applyPatchCmd = patchcmd + "--check --apply -"
 292
 293         if os.system(tryPatchCmd) != 0:
 294             print "Unfortunately applying the change failed!"
 295             print "What do you want to do?"
 296             response = "x"
 297             while response != "s" and response != "a" and response != "w":
 298                 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) ")
 299             if response == "s":
 300                 print "Skipping! Good luck with the next patches..."
 301                 return
 302             elif response == "a":
 303                 os.system(applyPatchCmd)
 304                 if len(filesToAdd) > 0:
 305                     print "You may also want to call p4 add on the following files:"
 306                     print " ".join(filesToAdd)
 307                 if len(filesToDelete):
 308                     print "The following files should be scheduled for deletion with p4 delete:"
 309                     print " ".join(filesToDelete)
 310                 die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 311             elif response == "w":
 312                 system(diffcmd + " > patch.txt")
 313                 print "Patch saved to patch.txt in %s !" % self.clientPath
 314                 die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 315
 316         system(applyPatchCmd)
 317
 318         for f in filesToAdd:
 319             system("p4 add %s" % f)
 320         for f in filesToDelete:
 321             system("p4 revert %s" % f)
 322             system("p4 delete %s" % f)
 323
 324         logMessage = ""
 325         if not self.directSubmit:
 326             logMessage = extractLogMessageFromGitCommit(id)
 327             logMessage = logMessage.replace("\n", "\n\t")
 328             logMessage = logMessage[:-1]
 329
 330         template = mypopen("p4 change -o").read()
 331
 332         if self.interactive:
 333             submitTemplate = self.prepareLogMessage(template, logMessage)
 334             diff = mypopen("p4 diff -du ...").read()
 335
 336             for newFile in filesToAdd:
 337                 diff += "==== new file ====\n"
 338                 diff += "--- /dev/null\n"
 339                 diff += "+++ %s\n" % newFile
 340                 f = open(newFile, "r")
 341                 for line in f.readlines():
 342                     diff += "+" + line
 343                 f.close()
 344
 345             separatorLine = "######## everything below this line is just the diff #######"
 346             if platform.system() == "Windows":
 347                 separatorLine += "\r"
 348             separatorLine += "\n"
 349
 350             response = "e"
 351             firstIteration = True
 352             while response == "e":
 353                 if not firstIteration:
 354                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 355                 firstIteration = False
 356                 if response == "e":
 357                     [handle, fileName] = tempfile.mkstemp()
 358                     tmpFile = os.fdopen(handle, "w+")
 359                     tmpFile.write(submitTemplate + separatorLine + diff)
 360                     tmpFile.close()
 361                     defaultEditor = "vi"
 362                     if platform.system() == "Windows":
 363                         defaultEditor = "notepad"
 364                     editor = os.environ.get("EDITOR", defaultEditor);
 365                     system(editor + " " + fileName)
 366                     tmpFile = open(fileName, "rb")
 367                     message = tmpFile.read()
 368                     tmpFile.close()
 369                     os.remove(fileName)
 370                     submitTemplate = message[:message.index(separatorLine)]
 371
 372             if response == "y" or response == "yes":
 373                if self.dryRun:
 374                    print submitTemplate
 375                    raw_input("Press return to continue...")
 376                else:
 377                    if self.directSubmit:
 378                        print "Submitting to git first"
 379                        os.chdir(self.oldWorkingDirectory)
 380                        pipe = os.popen("git commit -a -F -", "wb")
 381                        pipe.write(submitTemplate)
 382                        pipe.close()
 383                        os.chdir(self.clientPath)
 384
 385                    pipe = os.popen("p4 submit -i", "wb")
 386                    pipe.write(submitTemplate)
 387                    pipe.close()
 388             elif response == "s":
 389                 for f in editedFiles:
 390                     system("p4 revert \"%s\"" % f);
 391                 for f in filesToAdd:
 392                     system("p4 revert \"%s\"" % f);
 393                     system("rm %s" %f)
 394                 for f in filesToDelete:
 395                     system("p4 delete \"%s\"" % f);
 396                 return
 397             else:
 398                 print "Not submitting!"
 399                 self.interactive = False
 400         else:
 401             fileName = "submit.txt"
 402             file = open(fileName, "w+")
 403             file.write(self.prepareLogMessage(template, logMessage))
 404             file.close()
 405             print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 406
 407     def run(self, args):
 408         global gitdir
 409         # make gitdir absolute so we can cd out into the perforce checkout
 410         gitdir = os.path.abspath(gitdir)
 411         os.environ["GIT_DIR"] = gitdir
 412
 413         if len(args) == 0:
 414             self.master = currentGitBranch()
 415             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 416                 die("Detecting current git branch failed!")
 417         elif len(args) == 1:
 418             self.master = args[0]
 419         else:
 420             return False
 421
 422         depotPath = ""
 423         if gitBranchExists("p4"):
 424             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 425         if len(depotPath) == 0 and gitBranchExists("origin"):
 426             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 427
 428         if len(depotPath) == 0:
 429             print "Internal error: cannot locate perforce depot path from existing branches"
 430             sys.exit(128)
 431
 432         self.clientPath = p4Where(depotPath)
 433
 434         if len(self.clientPath) == 0:
 435             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 436             sys.exit(128)
 437
 438         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 439         self.oldWorkingDirectory = os.getcwd()
 440
 441         if self.directSubmit:
 442             self.diffStatus = mypopen("git diff -r --name-status HEAD").readlines()
 443             if len(self.diffStatus) == 0:
 444                 print "No changes in working directory to submit."
 445                 return True
 446             patch = mypopen("git diff -p --binary --diff-filter=ACMRTUXB HEAD").read()
 447             self.diffFile = gitdir + "/p4-git-diff"
 448             f = open(self.diffFile, "wb")
 449             f.write(patch)
 450             f.close();
 451
 452         os.chdir(self.clientPath)
 453         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 454         if response == "y" or response == "yes":
 455             system("p4 sync ...")
 456
 457         if len(self.origin) == 0:
 458             if gitBranchExists("p4"):
 459                 self.origin = "p4"
 460             else:
 461                 self.origin = "origin"
 462
 463         if self.reset:
 464             self.firstTime = True
 465
 466         if len(self.substFile) > 0:
 467             for line in open(self.substFile, "r").readlines():
 468                 tokens = line[:-1].split("=")
 469                 self.logSubstitutions[tokens[0]] = tokens[1]
 470
 471         self.check()
 472         self.configFile = gitdir + "/p4-git-sync.cfg"
 473         self.config = shelve.open(self.configFile, writeback=True)
 474
 475         if self.firstTime:
 476             self.start()
 477
 478         commits = self.config.get("commits", [])
 479
 480         while len(commits) > 0:
 481             self.firstTime = False
 482             commit = commits[0]
 483             commits = commits[1:]
 484             self.config["commits"] = commits
 485             self.apply(commit)
 486             if not self.interactive:
 487                 break
 488
 489         self.config.close()
 490
 491         if self.directSubmit:
 492             os.remove(self.diffFile)
 493
 494         if len(commits) == 0:
 495             if self.firstTime:
 496                 print "No changes found to apply between %s and current HEAD" % self.origin
 497             else:
 498                 print "All changes applied!"
 499                 os.chdir(self.oldWorkingDirectory)
 500                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 501                 if response == "y" or response == "yes":
 502                     rebase = P4Rebase()
 503                     rebase.run([])
 504             os.remove(self.configFile)
 505
 506         return True
 507
 508 class P4Sync(Command):
 509     def __init__(self):
 510         Command.__init__(self)
 511         self.options = [
 512                 optparse.make_option("--branch", dest="branch"),
 513                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 514                 optparse.make_option("--changesfile", dest="changesFile"),
 515                 optparse.make_option("--silent", dest="silent", action="store_true"),
 516                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 517                 optparse.make_option("--with-origin", dest="syncWithOrigin", action="store_true"),
 518                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 519                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false"),
 520                 optparse.make_option("--max-changes", dest="maxChanges")
 521         ]
 522         self.description = """Imports from Perforce into a git repository.\n
 523     example:
 524     //depot/my/project/ -- to import the current head
 525     //depot/my/project/@all -- to import everything
 526     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 527
 528     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 529
 530         self.usage += " //depot/path[@revRange]"
 531
 532         self.silent = False
 533         self.createdBranches = Set()
 534         self.committedChanges = Set()
 535         self.branch = ""
 536         self.detectBranches = False
 537         self.detectLabels = False
 538         self.changesFile = ""
 539         self.syncWithOrigin = False
 540         self.verbose = False
 541         self.importIntoRemotes = True
 542         self.maxChanges = ""
 543         self.isWindows = (platform.system() == "Windows")
 544
 545     def p4File(self, depotPath):
 546         return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 547
 548     def extractFilesFromCommit(self, commit):
 549         files = []
 550         fnum = 0
 551         while commit.has_key("depotFile%s" % fnum):
 552             path =  commit["depotFile%s" % fnum]
 553             if not path.startswith(self.depotPath):
 554     #            if not self.silent:
 555     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 556                 fnum = fnum + 1
 557                 continue
 558
 559             file = {}
 560             file["path"] = path
 561             file["rev"] = commit["rev%s" % fnum]
 562             file["action"] = commit["action%s" % fnum]
 563             file["type"] = commit["type%s" % fnum]
 564             files.append(file)
 565             fnum = fnum + 1
 566         return files
 567
 568     def splitFilesIntoBranches(self, commit):
 569         branches = {}
 570
 571         fnum = 0
 572         while commit.has_key("depotFile%s" % fnum):
 573             path =  commit["depotFile%s" % fnum]
 574             if not path.startswith(self.depotPath):
 575     #            if not self.silent:
 576     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 577                 fnum = fnum + 1
 578                 continue
 579
 580             file = {}
 581             file["path"] = path
 582             file["rev"] = commit["rev%s" % fnum]
 583             file["action"] = commit["action%s" % fnum]
 584             file["type"] = commit["type%s" % fnum]
 585             fnum = fnum + 1
 586
 587             relPath = path[len(self.depotPath):]
 588
 589             for branch in self.knownBranches.keys():
 590                 if relPath.startswith(branch + "/"): # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 591                     if branch not in branches:
 592                         branches[branch] = []
 593                     branches[branch].append(file)
 594
 595         return branches
 596
 597     def commit(self, details, files, branch, branchPrefix, parent = ""):
 598         epoch = details["time"]
 599         author = details["user"]
 600
 601         if self.verbose:
 602             print "commit into %s" % branch
 603
 604         self.gitStream.write("commit %s\n" % branch)
 605     #    gitStream.write("mark :%s\n" % details["change"])
 606         self.committedChanges.add(int(details["change"]))
 607         committer = ""
 608         if author not in self.users:
 609             self.getUserMapFromPerforceServer()
 610         if author in self.users:
 611             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 612         else:
 613             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 614
 615         self.gitStream.write("committer %s\n" % committer)
 616
 617         self.gitStream.write("data <<EOT\n")
 618         self.gitStream.write(details["desc"])
 619         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 620         self.gitStream.write("EOT\n\n")
 621
 622         if len(parent) > 0:
 623             if self.verbose:
 624                 print "parent %s" % parent
 625             self.gitStream.write("from %s\n" % parent)
 626
 627         for file in files:
 628             path = file["path"]
 629             if not path.startswith(branchPrefix):
 630     #            if not silent:
 631     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 632                 continue
 633             rev = file["rev"]
 634             depotPath = path + "#" + rev
 635             relPath = path[len(branchPrefix):]
 636             action = file["action"]
 637
 638             if file["type"] == "apple":
 639                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 640                 continue
 641
 642             if action == "delete":
 643                 self.gitStream.write("D %s\n" % relPath)
 644             else:
 645                 mode = 644
 646                 if file["type"].startswith("x"):
 647                     mode = 755
 648
 649                 data = self.p4File(depotPath)
 650
 651                 if self.isWindows and file["type"].endswith("text"):
 652                     data = data.replace("\r\n", "\n")
 653
 654                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 655                 self.gitStream.write("data %s\n" % len(data))
 656                 self.gitStream.write(data)
 657                 self.gitStream.write("\n")
 658
 659         self.gitStream.write("\n")
 660
 661         change = int(details["change"])
 662
 663         if self.labels.has_key(change):
 664             label = self.labels[change]
 665             labelDetails = label[0]
 666             labelRevisions = label[1]
 667             if self.verbose:
 668                 print "Change %s is labelled %s" % (change, labelDetails)
 669
 670             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 671
 672             if len(files) == len(labelRevisions):
 673
 674                 cleanedFiles = {}
 675                 for info in files:
 676                     if info["action"] == "delete":
 677                         continue
 678                     cleanedFiles[info["depotFile"]] = info["rev"]
 679
 680                 if cleanedFiles == labelRevisions:
 681                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 682                     self.gitStream.write("from %s\n" % branch)
 683
 684                     owner = labelDetails["Owner"]
 685                     tagger = ""
 686                     if author in self.users:
 687                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 688                     else:
 689                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 690                     self.gitStream.write("tagger %s\n" % tagger)
 691                     self.gitStream.write("data <<EOT\n")
 692                     self.gitStream.write(labelDetails["Description"])
 693                     self.gitStream.write("EOT\n\n")
 694
 695                 else:
 696                     if not self.silent:
 697                         print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 698
 699             else:
 700                 if not self.silent:
 701                     print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 702
 703     def getUserMapFromPerforceServer(self):
 704         if self.userMapFromPerforceServer:
 705             return
 706         self.users = {}
 707
 708         for output in p4CmdList("users"):
 709             if not output.has_key("User"):
 710                 continue
 711             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 712
 713         cache = open(gitdir + "/p4-usercache.txt", "wb")
 714         for user in self.users.keys():
 715             cache.write("%s\t%s\n" % (user, self.users[user]))
 716         cache.close();
 717         self.userMapFromPerforceServer = True
 718
 719     def loadUserMapFromCache(self):
 720         self.users = {}
 721         self.userMapFromPerforceServer = False
 722         try:
 723             cache = open(gitdir + "/p4-usercache.txt", "rb")
 724             lines = cache.readlines()
 725             cache.close()
 726             for line in lines:
 727                 entry = line[:-1].split("\t")
 728                 self.users[entry[0]] = entry[1]
 729         except IOError:
 730             self.getUserMapFromPerforceServer()
 731
 732     def getLabels(self):
 733         self.labels = {}
 734
 735         l = p4CmdList("labels %s..." % self.depotPath)
 736         if len(l) > 0 and not self.silent:
 737             print "Finding files belonging to labels in %s" % self.depotPath
 738
 739         for output in l:
 740             label = output["label"]
 741             revisions = {}
 742             newestChange = 0
 743             if self.verbose:
 744                 print "Querying files for label %s" % label
 745             for file in p4CmdList("files %s...@%s" % (self.depotPath, label)):
 746                 revisions[file["depotFile"]] = file["rev"]
 747                 change = int(file["change"])
 748                 if change > newestChange:
 749                     newestChange = change
 750
 751             self.labels[newestChange] = [output, revisions]
 752
 753         if self.verbose:
 754             print "Label changes: %s" % self.labels.keys()
 755
 756     def getBranchMapping(self):
 757         self.projectName = self.depotPath[self.depotPath[:-1].rfind("/") + 1:]
 758
 759         for info in p4CmdList("branches"):
 760             details = p4Cmd("branch -o %s" % info["branch"])
 761             viewIdx = 0
 762             while details.has_key("View%s" % viewIdx):
 763                 paths = details["View%s" % viewIdx].split(" ")
 764                 viewIdx = viewIdx + 1
 765                 # require standard //depot/foo/... //depot/bar/... mapping
 766                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 767                     continue
 768                 source = paths[0]
 769                 destination = paths[1]
 770                 if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 771                     source = source[len(self.depotPath):-4]
 772                     destination = destination[len(self.depotPath):-4]
 773                     if destination not in self.knownBranches:
 774                         self.knownBranches[destination] = source
 775                     if source not in self.knownBranches:
 776                         self.knownBranches[source] = source
 777
 778     def listExistingP4GitBranches(self):
 779         self.p4BranchesInGit = []
 780
 781         cmdline = "git rev-parse --symbolic "
 782         if self.importIntoRemotes:
 783             cmdline += " --remotes"
 784         else:
 785             cmdline += " --branches"
 786
 787         for line in mypopen(cmdline).readlines():
 788             if self.importIntoRemotes and ((not line.startswith("p4/")) or line == "p4/HEAD\n"):
 789                 continue
 790             if self.importIntoRemotes:
 791                 # strip off p4
 792                 branch = line[3:-1]
 793             else:
 794                 branch = line[:-1]
 795             self.p4BranchesInGit.append(branch)
 796             self.initialParents[self.refPrefix + branch] = parseRevision(line[:-1])
 797
 798     def createOrUpdateBranchesFromOrigin(self):
 799         if not self.silent:
 800             print "Creating/updating branch(es) in %s based on origin branch(es)" % self.refPrefix
 801
 802         for line in mypopen("git rev-parse --symbolic --remotes"):
 803             if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 804                 continue
 805
 806             headName = line[len("origin/"):-1]
 807             remoteHead = self.refPrefix + headName
 808             originHead = "origin/" + headName
 809
 810             [originPreviousDepotPath, originP4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(originHead))
 811             if len(originPreviousDepotPath) == 0 or len(originP4Change) == 0:
 812                 continue
 813
 814             update = False
 815             if not gitBranchExists(remoteHead):
 816                 if self.verbose:
 817                     print "creating %s" % remoteHead
 818                 update = True
 819             else:
 820                 [p4PreviousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(remoteHead))
 821                 if len(p4Change) > 0:
 822                     if originPreviousDepotPath == p4PreviousDepotPath:
 823                         originP4Change = int(originP4Change)
 824                         p4Change = int(p4Change)
 825                         if originP4Change > p4Change:
 826                             print "%s (%s) is newer than %s (%s). Updating p4 branch from origin." % (originHead, originP4Change, remoteHead, p4Change)
 827                             update = True
 828                     else:
 829                         print "Ignoring: %s was imported from %s while %s was imported from %s" % (originHead, originPreviousDepotPath, remoteHead, p4PreviousDepotPath)
 830
 831             if update:
 832                 system("git update-ref %s %s" % (remoteHead, originHead))
 833
 834     def run(self, args):
 835         self.depotPath = ""
 836         self.changeRange = ""
 837         self.initialParent = ""
 838         self.previousDepotPath = ""
 839         # map from branch depot path to parent branch
 840         self.knownBranches = {}
 841         self.initialParents = {}
 842
 843         if self.importIntoRemotes:
 844             self.refPrefix = "refs/remotes/p4/"
 845         else:
 846             self.refPrefix = "refs/heads/"
 847
 848         if self.syncWithOrigin:
 849             print "Syncing with origin first as requested by calling git fetch origin"
 850             system("git fetch origin")
 851
 852         createP4HeadRef = False;
 853
 854         if len(self.branch) == 0:
 855             self.branch = self.refPrefix + "master"
 856             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
 857                 system("git update-ref %s refs/heads/p4" % self.branch)
 858                 system("git branch -D p4");
 859             # create it /after/ importing, when master exists
 860             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
 861                 createP4HeadRef = True
 862
 863         if len(args) == 0:
 864             self.createOrUpdateBranchesFromOrigin()
 865             self.listExistingP4GitBranches()
 866
 867             if len(self.p4BranchesInGit) > 1:
 868                 if not self.silent:
 869                     print "Importing from/into multiple branches"
 870                 self.detectBranches = True
 871
 872             if self.verbose:
 873                 print "branches: %s" % self.p4BranchesInGit
 874
 875             p4Change = 0
 876             for branch in self.p4BranchesInGit:
 877                 depotPath, change = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(self.refPrefix + branch))
 878
 879                 if self.verbose:
 880                     print "path %s change %s" % (depotPath, change)
 881
 882                 if len(depotPath) > 0 and len(change) > 0:
 883                     change = int(change) + 1
 884                     p4Change = max(p4Change, change)
 885
 886                     if len(self.previousDepotPath) == 0:
 887                         self.previousDepotPath = depotPath
 888                     else:
 889                         i = 0
 890                         l = min(len(self.previousDepotPath), len(depotPath))
 891                         while i < l and self.previousDepotPath[i] == depotPath[i]:
 892                             i = i + 1
 893                         self.previousDepotPath = self.previousDepotPath[:i]
 894
 895             if p4Change > 0:
 896                 self.depotPath = self.previousDepotPath
 897                 self.changeRange = "@%s,#head" % p4Change
 898                 self.initialParent = parseRevision(self.branch)
 899                 if not self.silent and not self.detectBranches:
 900                     print "Performing incremental import into %s git branch" % self.branch
 901
 902         if not self.branch.startswith("refs/"):
 903             self.branch = "refs/heads/" + self.branch
 904
 905         if len(self.depotPath) != 0:
 906             self.depotPath = self.depotPath[:-1]
 907
 908         if len(args) == 0 and len(self.depotPath) != 0:
 909             if not self.silent:
 910                 print "Depot path: %s" % self.depotPath
 911         elif len(args) != 1:
 912             return False
 913         else:
 914             if len(self.depotPath) != 0 and self.depotPath != args[0]:
 915                 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.depotPath, args[0])
 916                 sys.exit(1)
 917             self.depotPath = args[0]
 918
 919         self.revision = ""
 920         self.users = {}
 921
 922         if self.depotPath.find("@") != -1:
 923             atIdx = self.depotPath.index("@")
 924             self.changeRange = self.depotPath[atIdx:]
 925             if self.changeRange == "@all":
 926                 self.changeRange = ""
 927             elif self.changeRange.find(",") == -1:
 928                 self.revision = self.changeRange
 929                 self.changeRange = ""
 930             self.depotPath = self.depotPath[0:atIdx]
 931         elif self.depotPath.find("#") != -1:
 932             hashIdx = self.depotPath.index("#")
 933             self.revision = self.depotPath[hashIdx:]
 934             self.depotPath = self.depotPath[0:hashIdx]
 935         elif len(self.previousDepotPath) == 0:
 936             self.revision = "#head"
 937
 938         if self.depotPath.endswith("..."):
 939             self.depotPath = self.depotPath[:-3]
 940
 941         if not self.depotPath.endswith("/"):
 942             self.depotPath += "/"
 943
 944         self.loadUserMapFromCache()
 945         self.labels = {}
 946         if self.detectLabels:
 947             self.getLabels();
 948
 949         if self.detectBranches:
 950             self.getBranchMapping();
 951             if self.verbose:
 952                 print "p4-git branches: %s" % self.p4BranchesInGit
 953                 print "initial parents: %s" % self.initialParents
 954             for b in self.p4BranchesInGit:
 955                 if b != "master":
 956                     b = b[len(self.projectName):]
 957                 self.createdBranches.add(b)
 958
 959         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
 960
 961         importProcess = subprocess.Popen(["git", "fast-import"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE);
 962         self.gitOutput = importProcess.stdout
 963         self.gitStream = importProcess.stdin
 964         self.gitError = importProcess.stderr
 965
 966         if len(self.revision) > 0:
 967             print "Doing initial import of %s from revision %s" % (self.depotPath, self.revision)
 968
 969             details = { "user" : "git perforce import user", "time" : int(time.time()) }
 970             details["desc"] = "Initial import of %s from the state at revision %s" % (self.depotPath, self.revision)
 971             details["change"] = self.revision
 972             newestRevision = 0
 973
 974             fileCnt = 0
 975             for info in p4CmdList("files %s...%s" % (self.depotPath, self.revision)):
 976                 change = int(info["change"])
 977                 if change > newestRevision:
 978                     newestRevision = change
 979
 980                 if info["action"] == "delete":
 981                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
 982                     #fileCnt = fileCnt + 1
 983                     continue
 984
 985                 for prop in [ "depotFile", "rev", "action", "type" ]:
 986                     details["%s%s" % (prop, fileCnt)] = info[prop]
 987
 988                 fileCnt = fileCnt + 1
 989
 990             details["change"] = newestRevision
 991
 992             try:
 993                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPath)
 994             except IOError:
 995                 print "IO error with git fast-import. Is your git version recent enough?"
 996                 print self.gitError.read()
 997
 998         else:
 999             changes = []
1000
1001             if len(self.changesFile) > 0:
1002                 output = open(self.changesFile).readlines()
1003                 changeSet = Set()
1004                 for line in output:
1005                     changeSet.add(int(line))
1006
1007                 for change in changeSet:
1008                     changes.append(change)
1009
1010                 changes.sort()
1011             else:
1012                 if self.verbose:
1013                     print "Getting p4 changes for %s...%s" % (self.depotPath, self.changeRange)
1014                 output = mypopen("p4 changes %s...%s" % (self.depotPath, self.changeRange)).readlines()
1015
1016                 for line in output:
1017                     changeNum = line.split(" ")[1]
1018                     changes.append(changeNum)
1019
1020                 changes.reverse()
1021
1022                 if len(self.maxChanges) > 0:
1023                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1024
1025             if len(changes) == 0:
1026                 if not self.silent:
1027                     print "No changes to import!"
1028                 return True
1029
1030             self.updatedBranches = set()
1031
1032             cnt = 1
1033             for change in changes:
1034                 description = p4Cmd("describe %s" % change)
1035
1036                 if not self.silent:
1037                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1038                     sys.stdout.flush()
1039                 cnt = cnt + 1
1040
1041                 try:
1042                     if self.detectBranches:
1043                         branches = self.splitFilesIntoBranches(description)
1044                         for branch in branches.keys():
1045                             branchPrefix = self.depotPath + branch + "/"
1046
1047                             parent = ""
1048
1049                             filesForCommit = branches[branch]
1050
1051                             if self.verbose:
1052                                 print "branch is %s" % branch
1053
1054                             self.updatedBranches.add(branch)
1055
1056                             if branch not in self.createdBranches:
1057                                 self.createdBranches.add(branch)
1058                                 parent = self.knownBranches[branch]
1059                                 if parent == branch:
1060                                     parent = ""
1061                                 elif self.verbose:
1062                                     print "parent determined through known branches: %s" % parent
1063
1064                             # main branch? use master
1065                             if branch == "main":
1066                                 branch = "master"
1067                             else:
1068                                 branch = self.projectName + branch
1069
1070                             if parent == "main":
1071                                 parent = "master"
1072                             elif len(parent) > 0:
1073                                 parent = self.projectName + parent
1074
1075                             branch = self.refPrefix + branch
1076                             if len(parent) > 0:
1077                                 parent = self.refPrefix + parent
1078
1079                             if self.verbose:
1080                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1081
1082                             if len(parent) == 0 and branch in self.initialParents:
1083                                 parent = self.initialParents[branch]
1084                                 del self.initialParents[branch]
1085
1086                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
1087                     else:
1088                         files = self.extractFilesFromCommit(description)
1089                         self.commit(description, files, self.branch, self.depotPath, self.initialParent)
1090                         self.initialParent = ""
1091                 except IOError:
1092                     print self.gitError.read()
1093                     sys.exit(1)
1094
1095             if not self.silent:
1096                 print ""
1097                 if len(self.updatedBranches) > 0:
1098                     sys.stdout.write("Updated branches: ")
1099                     for b in self.updatedBranches:
1100                         sys.stdout.write("%s " % b)
1101                     sys.stdout.write("\n")
1102
1103
1104         self.gitStream.close()
1105         if importProcess.wait() != 0:
1106             die("fast-import failed: %s" % self.gitError.read())
1107         self.gitOutput.close()
1108         self.gitError.close()
1109
1110         if createP4HeadRef:
1111             system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1112
1113         return True
1114
1115 class P4Rebase(Command):
1116     def __init__(self):
1117         Command.__init__(self)
1118         self.options = [ optparse.make_option("--with-origin", dest="syncWithOrigin", action="store_true") ]
1119         self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
1120         self.syncWithOrigin = False
1121
1122     def run(self, args):
1123         sync = P4Sync()
1124         sync.syncWithOrigin = self.syncWithOrigin
1125         sync.run([])
1126         print "Rebasing the current branch"
1127         oldHead = mypopen("git rev-parse HEAD").read()[:-1]
1128         system("git rebase p4")
1129         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1130         return True
1131
1132 class P4Clone(P4Sync):
1133     def __init__(self):
1134         P4Sync.__init__(self)
1135         self.description = "Creates a new git repository and imports from Perforce into it"
1136         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1137         self.needsGit = False
1138
1139     def run(self, args):
1140         global gitdir
1141
1142         if len(args) < 1:
1143             return False
1144         depotPath = args[0]
1145         dir = ""
1146         if len(args) == 2:
1147             dir = args[1]
1148         elif len(args) > 2:
1149             return False
1150
1151         if not depotPath.startswith("//"):
1152             return False
1153
1154         if len(dir) == 0:
1155             dir = depotPath
1156             atPos = dir.rfind("@")
1157             if atPos != -1:
1158                 dir = dir[0:atPos]
1159             hashPos = dir.rfind("#")
1160             if hashPos != -1:
1161                 dir = dir[0:hashPos]
1162
1163             if dir.endswith("..."):
1164                 dir = dir[:-3]
1165
1166             if dir.endswith("/"):
1167                dir = dir[:-1]
1168
1169             slashPos = dir.rfind("/")
1170             if slashPos != -1:
1171                 dir = dir[slashPos + 1:]
1172
1173         print "Importing from %s into %s" % (depotPath, dir)
1174         os.makedirs(dir)
1175         os.chdir(dir)
1176         system("git init")
1177         gitdir = os.getcwd() + "/.git"
1178         if not P4Sync.run(self, [depotPath]):
1179             return False
1180         if self.branch != "master":
1181             if gitBranchExists("refs/remotes/p4/master"):
1182                 system("git branch master refs/remotes/p4/master")
1183                 system("git checkout -f")
1184             else:
1185                 print "Could not detect main branch. No checkout/master branch created."
1186         return True
1187
1188 class HelpFormatter(optparse.IndentedHelpFormatter):
1189     def __init__(self):
1190         optparse.IndentedHelpFormatter.__init__(self)
1191
1192     def format_description(self, description):
1193         if description:
1194             return description + "\n"
1195         else:
1196             return ""
1197
1198 def printUsage(commands):
1199     print "usage: %s <command> [options]" % sys.argv[0]
1200     print ""
1201     print "valid commands: %s" % ", ".join(commands)
1202     print ""
1203     print "Try %s <command> --help for command specific help." % sys.argv[0]
1204     print ""
1205
1206 commands = {
1207     "debug" : P4Debug(),
1208     "submit" : P4Submit(),
1209     "sync" : P4Sync(),
1210     "rebase" : P4Rebase(),
1211     "clone" : P4Clone(),
1212     "rollback" : P4RollBack()
1213 }
1214
1215 if len(sys.argv[1:]) == 0:
1216     printUsage(commands.keys())
1217     sys.exit(2)
1218
1219 cmd = ""
1220 cmdName = sys.argv[1]
1221 try:
1222     cmd = commands[cmdName]
1223 except KeyError:
1224     print "unknown command %s" % cmdName
1225     print ""
1226     printUsage(commands.keys())
1227     sys.exit(2)
1228
1229 options = cmd.options
1230 cmd.gitdir = gitdir
1231
1232 args = sys.argv[2:]
1233
1234 if len(options) > 0:
1235     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1236
1237     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1238                                    options,
1239                                    description = cmd.description,
1240                                    formatter = HelpFormatter())
1241
1242     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1243
1244 if cmd.needsGit:
1245     gitdir = cmd.gitdir
1246     if len(gitdir) == 0:
1247         gitdir = ".git"
1248         if not isValidGitDir(gitdir):
1249             gitdir = mypopen("git rev-parse --git-dir").read()[:-1]
1250             if os.path.exists(gitdir):
1251                 cdup = mypopen("git rev-parse --show-cdup").read()[:-1];
1252                 if len(cdup) > 0:
1253                     os.chdir(cdup);
1254
1255     if not isValidGitDir(gitdir):
1256         if isValidGitDir(gitdir + "/.git"):
1257             gitdir += "/.git"
1258         else:
1259             die("fatal: cannot locate git repository at %s" % gitdir)
1260
1261     os.environ["GIT_DIR"] = gitdir
1262
1263 if not cmd.run(args):
1264     parser.print_help()
1265