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