contrib/fast-import/git-p4

   1 #!/usr/bin/env python
   2 #
   3 # git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4 #
   5 # Author: Simon Hausmann <hausmann@kde.org>
   6 # Copyright: 2007 Simon Hausmann <hausmann@kde.org>
   7 #            2007 Trolltech ASA
   8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9 #
  10
  11 import optparse, sys, os, marshal, popen2, shelve
  12 import tempfile, getopt, sha, os.path, time
  13 from sets import Set;
  14
  15 gitdir = os.environ.get("GIT_DIR", "")
  16
  17 def p4CmdList(cmd):
  18     cmd = "p4 -G %s" % cmd
  19     pipe = os.popen(cmd, "rb")
  20
  21     result = []
  22     try:
  23         while True:
  24             entry = marshal.load(pipe)
  25             result.append(entry)
  26     except EOFError:
  27         pass
  28     pipe.close()
  29
  30     return result
  31
  32 def p4Cmd(cmd):
  33     list = p4CmdList(cmd)
  34     result = {}
  35     for entry in list:
  36         result.update(entry)
  37     return result;
  38
  39 def p4Where(depotPath):
  40     if not depotPath.endswith("/"):
  41         depotPath += "/"
  42     output = p4Cmd("where %s..." % depotPath)
  43     clientPath = ""
  44     if "path" in output:
  45         clientPath = output.get("path")
  46     elif "data" in output:
  47         data = output.get("data")
  48         lastSpace = data.rfind(" ")
  49         clientPath = data[lastSpace + 1:]
  50
  51     if clientPath.endswith("..."):
  52         clientPath = clientPath[:-3]
  53     return clientPath
  54
  55 def die(msg):
  56     sys.stderr.write(msg + "\n")
  57     sys.exit(1)
  58
  59 def currentGitBranch():
  60     return os.popen("git name-rev HEAD").read().split(" ")[1][:-1]
  61
  62 def isValidGitDir(path):
  63     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  64         return True;
  65     return False
  66
  67 def system(cmd):
  68     if os.system(cmd) != 0:
  69         die("command failed: %s" % cmd)
  70
  71 def extractLogMessageFromGitCommit(commit):
  72     logMessage = ""
  73     foundTitle = False
  74     for log in os.popen("git cat-file commit %s" % commit).readlines():
  75        if not foundTitle:
  76            if len(log) == 1:
  77                foundTitle = 1
  78            continue
  79
  80        logMessage += log
  81     return logMessage
  82
  83 def extractDepotPathAndChangeFromGitLog(log):
  84     values = {}
  85     for line in log.split("\n"):
  86         line = line.strip()
  87         if line.startswith("[git-p4:") and line.endswith("]"):
  88             line = line[8:-1].strip()
  89             for assignment in line.split(":"):
  90                 variable = assignment.strip()
  91                 value = ""
  92                 equalPos = assignment.find("=")
  93                 if equalPos != -1:
  94                     variable = assignment[:equalPos].strip()
  95                     value = assignment[equalPos + 1:].strip()
  96                     if value.startswith("\"") and value.endswith("\""):
  97                         value = value[1:-1]
  98                 values[variable] = value
  99
 100     return values.get("depot-path"), values.get("change")
 101
 102 def gitBranchExists(branch):
 103     if os.system("git rev-parse %s 2>/dev/null >/dev/null" % branch) == 0:
 104         return True
 105     return False
 106
 107 class Command:
 108     def __init__(self):
 109         self.usage = "usage: %prog [options]"
 110         self.needsGit = True
 111
 112 class P4Debug(Command):
 113     def __init__(self):
 114         Command.__init__(self)
 115         self.options = [
 116         ]
 117         self.description = "A tool to debug the output of p4 -G."
 118         self.needsGit = False
 119
 120     def run(self, args):
 121         for output in p4CmdList(" ".join(args)):
 122             print output
 123         return True
 124
 125 class P4CleanTags(Command):
 126     def __init__(self):
 127         Command.__init__(self)
 128         self.options = [
 129 #                optparse.make_option("--branch", dest="branch", default="refs/heads/master")
 130         ]
 131         self.description = "A tool to remove stale unused tags from incremental perforce imports."
 132     def run(self, args):
 133         branch = currentGitBranch()
 134         print "Cleaning out stale p4 import tags..."
 135         sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % branch)
 136         output = sout.read()
 137         try:
 138             tagIdx = output.index(" tags/p4/")
 139         except:
 140             print "Cannot find any p4/* tag. Nothing to do."
 141             sys.exit(0)
 142
 143         try:
 144             caretIdx = output.index("^")
 145         except:
 146             caretIdx = len(output) - 1
 147         rev = int(output[tagIdx + 9 : caretIdx])
 148
 149         allTags = os.popen("git tag -l p4/").readlines()
 150         for i in range(len(allTags)):
 151             allTags[i] = int(allTags[i][3:-1])
 152
 153         allTags.sort()
 154
 155         allTags.remove(rev)
 156
 157         for rev in allTags:
 158             print os.popen("git tag -d p4/%s" % rev).read()
 159
 160         print "%s tags removed." % len(allTags)
 161         return True
 162
 163 class P4Submit(Command):
 164     def __init__(self):
 165         Command.__init__(self)
 166         self.options = [
 167                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 168                 optparse.make_option("--origin", dest="origin"),
 169                 optparse.make_option("--reset", action="store_true", dest="reset"),
 170                 optparse.make_option("--log-substitutions", dest="substFile"),
 171                 optparse.make_option("--noninteractive", action="store_false"),
 172                 optparse.make_option("--dry-run", action="store_true"),
 173                 optparse.make_option("--apply-as-patch", action="store_true", dest="applyAsPatch")
 174         ]
 175         self.description = "Submit changes from git to the perforce depot."
 176         self.usage += " [name of git branch to submit into perforce depot]"
 177         self.firstTime = True
 178         self.reset = False
 179         self.interactive = True
 180         self.dryRun = False
 181         self.substFile = ""
 182         self.firstTime = True
 183         self.origin = ""
 184         self.applyAsPatch = True
 185
 186         self.logSubstitutions = {}
 187         self.logSubstitutions["<enter description here>"] = "%log%"
 188         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 189
 190     def check(self):
 191         if len(p4CmdList("opened ...")) > 0:
 192             die("You have files opened with perforce! Close them before starting the sync.")
 193
 194     def start(self):
 195         if len(self.config) > 0 and not self.reset:
 196             die("Cannot start sync. Previous sync config found at %s" % self.configFile)
 197
 198         commits = []
 199         for line in os.popen("git rev-list --no-merges %s..%s" % (self.origin, self.master)).readlines():
 200             commits.append(line[:-1])
 201         commits.reverse()
 202
 203         self.config["commits"] = commits
 204
 205         if not self.applyAsPatch:
 206             print "Creating temporary p4-sync branch from %s ..." % self.origin
 207             system("git checkout -f -b p4-sync %s" % self.origin)
 208
 209     def prepareLogMessage(self, template, message):
 210         result = ""
 211
 212         for line in template.split("\n"):
 213             if line.startswith("#"):
 214                 result += line + "\n"
 215                 continue
 216
 217             substituted = False
 218             for key in self.logSubstitutions.keys():
 219                 if line.find(key) != -1:
 220                     value = self.logSubstitutions[key]
 221                     value = value.replace("%log%", message)
 222                     if value != "@remove@":
 223                         result += line.replace(key, value) + "\n"
 224                     substituted = True
 225                     break
 226
 227             if not substituted:
 228                 result += line + "\n"
 229
 230         return result
 231
 232     def apply(self, id):
 233         print "Applying %s" % (os.popen("git log --max-count=1 --pretty=oneline %s" % id).read())
 234         diff = os.popen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 235         filesToAdd = set()
 236         filesToDelete = set()
 237         for line in diff:
 238             modifier = line[0]
 239             path = line[1:].strip()
 240             if modifier == "M":
 241                 system("p4 edit %s" % path)
 242             elif modifier == "A":
 243                 filesToAdd.add(path)
 244                 if path in filesToDelete:
 245                     filesToDelete.remove(path)
 246             elif modifier == "D":
 247                 filesToDelete.add(path)
 248                 if path in filesToAdd:
 249                     filesToAdd.remove(path)
 250             else:
 251                 die("unknown modifier %s for %s" % (modifier, path))
 252
 253         if self.applyAsPatch:
 254             system("git diff-tree -p --diff-filter=ACMRTUXB \"%s^\" \"%s\" | patch -p1" % (id, id))
 255         else:
 256             system("git diff-files --name-only -z | git update-index --remove -z --stdin")
 257             system("git cherry-pick --no-commit \"%s\"" % id)
 258
 259         for f in filesToAdd:
 260             system("p4 add %s" % f)
 261         for f in filesToDelete:
 262             system("p4 revert %s" % f)
 263             system("p4 delete %s" % f)
 264
 265         logMessage = extractLogMessageFromGitCommit(id)
 266         logMessage = logMessage.replace("\n", "\n\t")
 267         logMessage = logMessage[:-1]
 268
 269         template = os.popen("p4 change -o").read()
 270
 271         if self.interactive:
 272             submitTemplate = self.prepareLogMessage(template, logMessage)
 273             diff = os.popen("p4 diff -du ...").read()
 274
 275             for newFile in filesToAdd:
 276                 diff += "==== new file ====\n"
 277                 diff += "--- /dev/null\n"
 278                 diff += "+++ %s\n" % newFile
 279                 f = open(newFile, "r")
 280                 for line in f.readlines():
 281                     diff += "+" + line
 282                 f.close()
 283
 284             separatorLine = "######## everything below this line is just the diff #######\n"
 285
 286             response = "e"
 287             firstIteration = True
 288             while response == "e":
 289                 if not firstIteration:
 290                     response = raw_input("Do you want to submit this change (y/e/n)? ")
 291                 firstIteration = False
 292                 if response == "e":
 293                     [handle, fileName] = tempfile.mkstemp()
 294                     tmpFile = os.fdopen(handle, "w+")
 295                     tmpFile.write(submitTemplate + separatorLine + diff)
 296                     tmpFile.close()
 297                     editor = os.environ.get("EDITOR", "vi")
 298                     system(editor + " " + fileName)
 299                     tmpFile = open(fileName, "r")
 300                     message = tmpFile.read()
 301                     tmpFile.close()
 302                     os.remove(fileName)
 303                     submitTemplate = message[:message.index(separatorLine)]
 304
 305             if response == "y" or response == "yes":
 306                if self.dryRun:
 307                    print submitTemplate
 308                    raw_input("Press return to continue...")
 309                else:
 310                     pipe = os.popen("p4 submit -i", "w")
 311                     pipe.write(submitTemplate)
 312                     pipe.close()
 313             else:
 314                 print "Not submitting!"
 315                 self.interactive = False
 316         else:
 317             fileName = "submit.txt"
 318             file = open(fileName, "w+")
 319             file.write(self.prepareLogMessage(template, logMessage))
 320             file.close()
 321             print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 322
 323     def run(self, args):
 324         global gitdir
 325         # make gitdir absolute so we can cd out into the perforce checkout
 326         gitdir = os.path.abspath(gitdir)
 327         os.environ["GIT_DIR"] = gitdir
 328
 329         if len(args) == 0:
 330             self.master = currentGitBranch()
 331             if len(self.master) == 0 or not os.path.exists("%s/refs/heads/%s" % (gitdir, self.master)):
 332                 die("Detecting current git branch failed!")
 333         elif len(args) == 1:
 334             self.master = args[0]
 335         else:
 336             return False
 337
 338         depotPath = ""
 339         if gitBranchExists("p4"):
 340             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 341         if len(depotPath) == 0 and gitBranchExists("origin"):
 342             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 343
 344         if len(depotPath) == 0:
 345             print "Internal error: cannot locate perforce depot path from existing branches"
 346             sys.exit(128)
 347
 348         clientPath = p4Where(depotPath)
 349
 350         if len(clientPath) == 0:
 351             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 352             sys.exit(128)
 353
 354         print "Perforce checkout for depot path %s located at %s" % (depotPath, clientPath)
 355         os.chdir(clientPath)
 356         response = raw_input("Do you want to sync %s with p4 sync? (y/n) " % clientPath)
 357         if response == "y" or response == "yes":
 358             system("p4 sync ...")
 359
 360         if len(self.origin) == 0:
 361             if gitBranchExists("p4"):
 362                 self.origin = "p4"
 363             else:
 364                 self.origin = "origin"
 365
 366         if self.reset:
 367             self.firstTime = True
 368
 369         if len(self.substFile) > 0:
 370             for line in open(self.substFile, "r").readlines():
 371                 tokens = line[:-1].split("=")
 372                 self.logSubstitutions[tokens[0]] = tokens[1]
 373
 374         self.check()
 375         self.configFile = gitdir + "/p4-git-sync.cfg"
 376         self.config = shelve.open(self.configFile, writeback=True)
 377
 378         if self.firstTime:
 379             self.start()
 380
 381         commits = self.config.get("commits", [])
 382
 383         while len(commits) > 0:
 384             self.firstTime = False
 385             commit = commits[0]
 386             commits = commits[1:]
 387             self.config["commits"] = commits
 388             self.apply(commit)
 389             if not self.interactive:
 390                 break
 391
 392         self.config.close()
 393
 394         if len(commits) == 0:
 395             if self.firstTime:
 396                 print "No changes found to apply between %s and current HEAD" % self.origin
 397             else:
 398                 print "All changes applied!"
 399                 if not self.applyAsPatch:
 400                     print "Deleting temporary p4-sync branch and going back to %s" % self.master
 401                     system("git checkout %s" % self.master)
 402                     system("git branch -D p4-sync")
 403                     print "Cleaning out your perforce checkout by doing p4 edit ... ; p4 revert ..."
 404                     system("p4 edit ... >/dev/null")
 405                     system("p4 revert ... >/dev/null")
 406             os.remove(self.configFile)
 407
 408         return True
 409
 410 class P4Sync(Command):
 411     def __init__(self):
 412         Command.__init__(self)
 413         self.options = [
 414                 optparse.make_option("--branch", dest="branch"),
 415                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 416                 optparse.make_option("--changesfile", dest="changesFile"),
 417                 optparse.make_option("--silent", dest="silent", action="store_true"),
 418                 optparse.make_option("--known-branches", dest="knownBranches"),
 419                 optparse.make_option("--data-cache", dest="dataCache", action="store_true"),
 420                 optparse.make_option("--command-cache", dest="commandCache", action="store_true"),
 421                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true")
 422         ]
 423         self.description = """Imports from Perforce into a git repository.\n
 424     example:
 425     //depot/my/project/ -- to import the current head
 426     //depot/my/project/@all -- to import everything
 427     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 428
 429     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 430
 431         self.usage += " //depot/path[@revRange]"
 432
 433         self.dataCache = False
 434         self.commandCache = False
 435         self.silent = False
 436         self.knownBranches = Set()
 437         self.createdBranches = Set()
 438         self.committedChanges = Set()
 439         self.branch = ""
 440         self.detectBranches = False
 441         self.detectLabels = False
 442         self.changesFile = ""
 443         self.tagLastChange = True
 444
 445     def p4File(self, depotPath):
 446         return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 447
 448     def extractFilesFromCommit(self, commit):
 449         files = []
 450         fnum = 0
 451         while commit.has_key("depotFile%s" % fnum):
 452             path =  commit["depotFile%s" % fnum]
 453             if not path.startswith(self.globalPrefix):
 454     #            if not self.silent:
 455     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.globalPrefix, change)
 456                 fnum = fnum + 1
 457                 continue
 458
 459             file = {}
 460             file["path"] = path
 461             file["rev"] = commit["rev%s" % fnum]
 462             file["action"] = commit["action%s" % fnum]
 463             file["type"] = commit["type%s" % fnum]
 464             files.append(file)
 465             fnum = fnum + 1
 466         return files
 467
 468     def isSubPathOf(self, first, second):
 469         if not first.startswith(second):
 470             return False
 471         if first == second:
 472             return True
 473         return first[len(second)] == "/"
 474
 475     def branchesForCommit(self, files):
 476         branches = Set()
 477
 478         for file in files:
 479             relativePath = file["path"][len(self.globalPrefix):]
 480             # strip off the filename
 481             relativePath = relativePath[0:relativePath.rfind("/")]
 482
 483     #        if len(branches) == 0:
 484     #            branches.add(relativePath)
 485     #            knownBranches.add(relativePath)
 486     #            continue
 487
 488             ###### this needs more testing :)
 489             knownBranch = False
 490             for branch in branches:
 491                 if relativePath == branch:
 492                     knownBranch = True
 493                     break
 494     #            if relativePath.startswith(branch):
 495                 if self.isSubPathOf(relativePath, branch):
 496                     knownBranch = True
 497                     break
 498     #            if branch.startswith(relativePath):
 499                 if self.isSubPathOf(branch, relativePath):
 500                     branches.remove(branch)
 501                     break
 502
 503             if knownBranch:
 504                 continue
 505
 506             for branch in self.knownBranches:
 507                 #if relativePath.startswith(branch):
 508                 if self.isSubPathOf(relativePath, branch):
 509                     if len(branches) == 0:
 510                         relativePath = branch
 511                     else:
 512                         knownBranch = True
 513                     break
 514
 515             if knownBranch:
 516                 continue
 517
 518             branches.add(relativePath)
 519             self.knownBranches.add(relativePath)
 520
 521         return branches
 522
 523     def findBranchParent(self, branchPrefix, files):
 524         for file in files:
 525             path = file["path"]
 526             if not path.startswith(branchPrefix):
 527                 continue
 528             action = file["action"]
 529             if action != "integrate" and action != "branch":
 530                 continue
 531             rev = file["rev"]
 532             depotPath = path + "#" + rev
 533
 534             log = p4CmdList("filelog \"%s\"" % depotPath)
 535             if len(log) != 1:
 536                 print "eek! I got confused by the filelog of %s" % depotPath
 537                 sys.exit(1);
 538
 539             log = log[0]
 540             if log["action0"] != action:
 541                 print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 542                 sys.exit(1);
 543
 544             branchAction = log["how0,0"]
 545     #        if branchAction == "branch into" or branchAction == "ignored":
 546     #            continue # ignore for branching
 547
 548             if not branchAction.endswith(" from"):
 549                 continue # ignore for branching
 550     #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 551     #            sys.exit(1);
 552
 553             source = log["file0,0"]
 554             if source.startswith(branchPrefix):
 555                 continue
 556
 557             lastSourceRev = log["erev0,0"]
 558
 559             sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 560             if len(sourceLog) != 1:
 561                 print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 562                 sys.exit(1);
 563             sourceLog = sourceLog[0]
 564
 565             relPath = source[len(self.globalPrefix):]
 566             # strip off the filename
 567             relPath = relPath[0:relPath.rfind("/")]
 568
 569             for branch in self.knownBranches:
 570                 if self.isSubPathOf(relPath, branch):
 571     #                print "determined parent branch branch %s due to change in file %s" % (branch, source)
 572                     return branch
 573     #            else:
 574     #                print "%s is not a subpath of branch %s" % (relPath, branch)
 575
 576         return ""
 577
 578     def commit(self, details, files, branch, branchPrefix, parent = "", merged = ""):
 579         epoch = details["time"]
 580         author = details["user"]
 581
 582         self.gitStream.write("commit %s\n" % branch)
 583     #    gitStream.write("mark :%s\n" % details["change"])
 584         self.committedChanges.add(int(details["change"]))
 585         committer = ""
 586         if author in self.users:
 587             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 588         else:
 589             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 590
 591         self.gitStream.write("committer %s\n" % committer)
 592
 593         self.gitStream.write("data <<EOT\n")
 594         self.gitStream.write(details["desc"])
 595         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 596         self.gitStream.write("EOT\n\n")
 597
 598         if len(parent) > 0:
 599             self.gitStream.write("from %s\n" % parent)
 600
 601         if len(merged) > 0:
 602             self.gitStream.write("merge %s\n" % merged)
 603
 604         for file in files:
 605             path = file["path"]
 606             if not path.startswith(branchPrefix):
 607     #            if not silent:
 608     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 609                 continue
 610             rev = file["rev"]
 611             depotPath = path + "#" + rev
 612             relPath = path[len(branchPrefix):]
 613             action = file["action"]
 614
 615             if file["type"] == "apple":
 616                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 617                 continue
 618
 619             if action == "delete":
 620                 self.gitStream.write("D %s\n" % relPath)
 621             else:
 622                 mode = 644
 623                 if file["type"].startswith("x"):
 624                     mode = 755
 625
 626                 data = self.p4File(depotPath)
 627
 628                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 629                 self.gitStream.write("data %s\n" % len(data))
 630                 self.gitStream.write(data)
 631                 self.gitStream.write("\n")
 632
 633         self.gitStream.write("\n")
 634
 635         change = int(details["change"])
 636
 637         self.lastChange = change
 638
 639         if change in self.labels:
 640             label = self.labels[change]
 641             labelDetails = label[0]
 642             labelRevisions = label[1]
 643
 644             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 645
 646             if len(files) == len(labelRevisions):
 647
 648                 cleanedFiles = {}
 649                 for info in files:
 650                     if info["action"] == "delete":
 651                         continue
 652                     cleanedFiles[info["depotFile"]] = info["rev"]
 653
 654                 if cleanedFiles == labelRevisions:
 655                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 656                     self.gitStream.write("from %s\n" % branch)
 657
 658                     owner = labelDetails["Owner"]
 659                     tagger = ""
 660                     if author in self.users:
 661                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 662                     else:
 663                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 664                     self.gitStream.write("tagger %s\n" % tagger)
 665                     self.gitStream.write("data <<EOT\n")
 666                     self.gitStream.write(labelDetails["Description"])
 667                     self.gitStream.write("EOT\n\n")
 668
 669                 else:
 670                     if not self.silent:
 671                         print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 672
 673             else:
 674                 if not self.silent:
 675                     print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 676
 677     def extractFilesInCommitToBranch(self, files, branchPrefix):
 678         newFiles = []
 679
 680         for file in files:
 681             path = file["path"]
 682             if path.startswith(branchPrefix):
 683                 newFiles.append(file)
 684
 685         return newFiles
 686
 687     def findBranchSourceHeuristic(self, files, branch, branchPrefix):
 688         for file in files:
 689             action = file["action"]
 690             if action != "integrate" and action != "branch":
 691                 continue
 692             path = file["path"]
 693             rev = file["rev"]
 694             depotPath = path + "#" + rev
 695
 696             log = p4CmdList("filelog \"%s\"" % depotPath)
 697             if len(log) != 1:
 698                 print "eek! I got confused by the filelog of %s" % depotPath
 699                 sys.exit(1);
 700
 701             log = log[0]
 702             if log["action0"] != action:
 703                 print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 704                 sys.exit(1);
 705
 706             branchAction = log["how0,0"]
 707
 708             if not branchAction.endswith(" from"):
 709                 continue # ignore for branching
 710     #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 711     #            sys.exit(1);
 712
 713             source = log["file0,0"]
 714             if source.startswith(branchPrefix):
 715                 continue
 716
 717             lastSourceRev = log["erev0,0"]
 718
 719             sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 720             if len(sourceLog) != 1:
 721                 print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 722                 sys.exit(1);
 723             sourceLog = sourceLog[0]
 724
 725             relPath = source[len(self.globalPrefix):]
 726             # strip off the filename
 727             relPath = relPath[0:relPath.rfind("/")]
 728
 729             for candidate in self.knownBranches:
 730                 if self.isSubPathOf(relPath, candidate) and candidate != branch:
 731                     return candidate
 732
 733         return ""
 734
 735     def changeIsBranchMerge(self, sourceBranch, destinationBranch, change):
 736         sourceFiles = {}
 737         for file in p4CmdList("files %s...@%s" % (self.globalPrefix + sourceBranch + "/", change)):
 738             if file["action"] == "delete":
 739                 continue
 740             sourceFiles[file["depotFile"]] = file
 741
 742         destinationFiles = {}
 743         for file in p4CmdList("files %s...@%s" % (self.globalPrefix + destinationBranch + "/", change)):
 744             destinationFiles[file["depotFile"]] = file
 745
 746         for fileName in sourceFiles.keys():
 747             integrations = []
 748             deleted = False
 749             integrationCount = 0
 750             for integration in p4CmdList("integrated \"%s\"" % fileName):
 751                 toFile = integration["fromFile"] # yes, it's true, it's fromFile
 752                 if not toFile in destinationFiles:
 753                     continue
 754                 destFile = destinationFiles[toFile]
 755                 if destFile["action"] == "delete":
 756     #                print "file %s has been deleted in %s" % (fileName, toFile)
 757                     deleted = True
 758                     break
 759                 integrationCount += 1
 760                 if integration["how"] == "branch from":
 761                     continue
 762
 763                 if int(integration["change"]) == change:
 764                     integrations.append(integration)
 765                     continue
 766                 if int(integration["change"]) > change:
 767                     continue
 768
 769                 destRev = int(destFile["rev"])
 770
 771                 startRev = integration["startFromRev"][1:]
 772                 if startRev == "none":
 773                     startRev = 0
 774                 else:
 775                     startRev = int(startRev)
 776
 777                 endRev = integration["endFromRev"][1:]
 778                 if endRev == "none":
 779                     endRev = 0
 780                 else:
 781                     endRev = int(endRev)
 782
 783                 initialBranch = (destRev == 1 and integration["how"] != "branch into")
 784                 inRange = (destRev >= startRev and destRev <= endRev)
 785                 newer = (destRev > startRev and destRev > endRev)
 786
 787                 if initialBranch or inRange or newer:
 788                     integrations.append(integration)
 789
 790             if deleted:
 791                 continue
 792
 793             if len(integrations) == 0 and integrationCount > 1:
 794                 print "file %s was not integrated from %s into %s" % (fileName, sourceBranch, destinationBranch)
 795                 return False
 796
 797         return True
 798
 799     def getUserMap(self):
 800         self.users = {}
 801
 802         for output in p4CmdList("users"):
 803             if not output.has_key("User"):
 804                 continue
 805             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 806
 807     def getLabels(self):
 808         self.labels = {}
 809
 810         l = p4CmdList("labels %s..." % self.globalPrefix)
 811         if len(l) > 0 and not silent:
 812             print "Finding files belonging to labels in %s" % self.globalPrefix
 813
 814         for output in l:
 815             label = output["label"]
 816             revisions = {}
 817             newestChange = 0
 818             for file in p4CmdList("files //...@%s" % label):
 819                 revisions[file["depotFile"]] = file["rev"]
 820                 change = int(file["change"])
 821                 if change > newestChange:
 822                     newestChange = change
 823
 824             self.labels[newestChange] = [output, revisions]
 825
 826     def run(self, args):
 827         self.globalPrefix = ""
 828         self.changeRange = ""
 829         self.initialParent = ""
 830
 831         if len(self.branch) == 0:
 832             self.branch = "p4"
 833
 834         if len(args) == 0:
 835             if not gitBranchExists(self.branch) and gitBranchExists("origin"):
 836                 if not self.silent:
 837                     print "Creating %s branch in git repository based on origin" % self.branch
 838                 system("git branch %s origin" % self.branch)
 839
 840             [self.previousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(self.branch))
 841             if len(self.previousDepotPath) > 0 and len(p4Change) > 0:
 842                 p4Change = int(p4Change) + 1
 843                 self.globalPrefix = self.previousDepotPath
 844                 self.changeRange = "@%s,#head" % p4Change
 845                 self.initialParent = self.branch
 846                 self.tagLastChange = False
 847                 if not self.silent:
 848                     print "Performing incremental import into %s git branch" % self.branch
 849
 850         self.branch = "refs/heads/" + self.branch
 851
 852         if len(self.globalPrefix) == 0:
 853             self.globalPrefix = self.previousDepotPath = os.popen("git repo-config --get p4.depotpath").read()
 854
 855         if len(self.globalPrefix) != 0:
 856             self.globalPrefix = self.globalPrefix[:-1]
 857
 858         if len(args) == 0 and len(self.globalPrefix) != 0:
 859             if not self.silent:
 860                 print "Depot path: %s" % self.globalPrefix
 861         elif len(args) != 1:
 862             return False
 863         else:
 864             if len(self.globalPrefix) != 0 and self.globalPrefix != args[0]:
 865                 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.globalPrefix, args[0])
 866                 sys.exit(1)
 867             self.globalPrefix = args[0]
 868
 869         self.revision = ""
 870         self.users = {}
 871         self.lastChange = 0
 872         self.initialTag = ""
 873
 874         if self.globalPrefix.find("@") != -1:
 875             atIdx = self.globalPrefix.index("@")
 876             self.changeRange = self.globalPrefix[atIdx:]
 877             if self.changeRange == "@all":
 878                 self.changeRange = ""
 879             elif self.changeRange.find(",") == -1:
 880                 self.revision = self.changeRange
 881                 self.changeRange = ""
 882             self.globalPrefix = self.globalPrefix[0:atIdx]
 883         elif self.globalPrefix.find("#") != -1:
 884             hashIdx = self.globalPrefix.index("#")
 885             self.revision = self.globalPrefix[hashIdx:]
 886             self.globalPrefix = self.globalPrefix[0:hashIdx]
 887         elif len(self.previousDepotPath) == 0:
 888             self.revision = "#head"
 889
 890         if self.globalPrefix.endswith("..."):
 891             self.globalPrefix = self.globalPrefix[:-3]
 892
 893         if not self.globalPrefix.endswith("/"):
 894             self.globalPrefix += "/"
 895
 896         self.getUserMap()
 897         self.labels = {}
 898         if self.detectLabels:
 899             self.getLabels();
 900
 901         if len(self.changeRange) == 0:
 902             try:
 903                 sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % self.branch)
 904                 output = sout.read()
 905                 if output.endswith("\n"):
 906                     output = output[:-1]
 907                 tagIdx = output.index(" tags/p4/")
 908                 caretIdx = output.find("^")
 909                 endPos = len(output)
 910                 if caretIdx != -1:
 911                     endPos = caretIdx
 912                 self.rev = int(output[tagIdx + 9 : endPos]) + 1
 913                 self.changeRange = "@%s,#head" % self.rev
 914                 self.initialParent = os.popen("git rev-parse %s" % self.branch).read()[:-1]
 915                 self.initialTag = "p4/%s" % (int(self.rev) - 1)
 916             except:
 917                 pass
 918
 919         self.tz = - time.timezone / 36
 920         tzsign = ("%s" % self.tz)[0]
 921         if tzsign != '+' and tzsign != '-':
 922             self.tz = "+" + ("%s" % self.tz)
 923
 924         self.gitOutput, self.gitStream, self.gitError = popen2.popen3("git fast-import")
 925
 926         if len(self.revision) > 0:
 927             print "Doing initial import of %s from revision %s" % (self.globalPrefix, self.revision)
 928
 929             details = { "user" : "git perforce import user", "time" : int(time.time()) }
 930             details["desc"] = "Initial import of %s from the state at revision %s" % (self.globalPrefix, self.revision)
 931             details["change"] = self.revision
 932             newestRevision = 0
 933
 934             fileCnt = 0
 935             for info in p4CmdList("files %s...%s" % (self.globalPrefix, self.revision)):
 936                 change = int(info["change"])
 937                 if change > newestRevision:
 938                     newestRevision = change
 939
 940                 if info["action"] == "delete":
 941                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
 942                     #fileCnt = fileCnt + 1
 943                     continue
 944
 945                 for prop in [ "depotFile", "rev", "action", "type" ]:
 946                     details["%s%s" % (prop, fileCnt)] = info[prop]
 947
 948                 fileCnt = fileCnt + 1
 949
 950             details["change"] = newestRevision
 951
 952             try:
 953                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.globalPrefix)
 954             except IOError:
 955                 print self.gitError.read()
 956
 957         else:
 958             changes = []
 959
 960             if len(self.changesFile) > 0:
 961                 output = open(self.changesFile).readlines()
 962                 changeSet = Set()
 963                 for line in output:
 964                     changeSet.add(int(line))
 965
 966                 for change in changeSet:
 967                     changes.append(change)
 968
 969                 changes.sort()
 970             else:
 971                 output = os.popen("p4 changes %s...%s" % (self.globalPrefix, self.changeRange)).readlines()
 972
 973                 for line in output:
 974                     changeNum = line.split(" ")[1]
 975                     changes.append(changeNum)
 976
 977                 changes.reverse()
 978
 979             if len(changes) == 0:
 980                 if not self.silent:
 981                     print "no changes to import!"
 982                 return True
 983
 984             cnt = 1
 985             for change in changes:
 986                 description = p4Cmd("describe %s" % change)
 987
 988                 if not self.silent:
 989                     sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 990                     sys.stdout.flush()
 991                 cnt = cnt + 1
 992
 993                 try:
 994                     files = self.extractFilesFromCommit(description)
 995                     if self.detectBranches:
 996                         for branch in self.branchesForCommit(files):
 997                             self.knownBranches.add(branch)
 998                             branchPrefix = self.globalPrefix + branch + "/"
 999
1000                             filesForCommit = self.extractFilesInCommitToBranch(files, branchPrefix)
1001
1002                             merged = ""
1003                             parent = ""
1004                             ########### remove cnt!!!
1005                             if branch not in self.createdBranches and cnt > 2:
1006                                 self.createdBranches.add(branch)
1007                                 parent = self.findBranchParent(branchPrefix, files)
1008                                 if parent == branch:
1009                                     parent = ""
1010             #                    elif len(parent) > 0:
1011             #                        print "%s branched off of %s" % (branch, parent)
1012
1013                             if len(parent) == 0:
1014                                 merged = self.findBranchSourceHeuristic(filesForCommit, branch, branchPrefix)
1015                                 if len(merged) > 0:
1016                                     print "change %s could be a merge from %s into %s" % (description["change"], merged, branch)
1017                                     if not self.changeIsBranchMerge(merged, branch, int(description["change"])):
1018                                         merged = ""
1019
1020                             branch = "refs/heads/" + branch
1021                             if len(parent) > 0:
1022                                 parent = "refs/heads/" + parent
1023                             if len(merged) > 0:
1024                                 merged = "refs/heads/" + merged
1025                             self.commit(description, files, branch, branchPrefix, parent, merged)
1026                     else:
1027                         self.commit(description, files, self.branch, self.globalPrefix, self.initialParent)
1028                         self.initialParent = ""
1029                 except IOError:
1030                     print self.gitError.read()
1031                     sys.exit(1)
1032
1033         if not self.silent:
1034             print ""
1035
1036         if self.tagLastChange:
1037             self.gitStream.write("reset refs/tags/p4/%s\n" % self.lastChange)
1038             self.gitStream.write("from %s\n\n" % self.branch);
1039
1040
1041         self.gitStream.close()
1042         self.gitOutput.close()
1043         self.gitError.close()
1044
1045         os.popen("git repo-config p4.depotpath %s" % self.globalPrefix).read()
1046         if len(self.initialTag) > 0:
1047             os.popen("git tag -d %s" % self.initialTag).read()
1048
1049         return True
1050
1051 class P4Rebase(Command):
1052     def __init__(self):
1053         Command.__init__(self)
1054         self.options = [ ]
1055         self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
1056
1057     def run(self, args):
1058         sync = P4Sync()
1059         sync.run([])
1060         print "Rebasing the current branch"
1061         oldHead = os.popen("git rev-parse HEAD").read()[:-1]
1062         system("git rebase p4")
1063         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1064         return True
1065
1066 class P4Clone(P4Sync):
1067     def __init__(self):
1068         P4Sync.__init__(self)
1069         self.description = "Creates a new git repository and imports from Perforce into it"
1070         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1071         self.needsGit = False
1072         self.tagLastChange = False
1073
1074     def run(self, args):
1075         if len(args) < 1:
1076             return False
1077         depotPath = args[0]
1078         dir = ""
1079         if len(args) == 2:
1080             dir = args[1]
1081         elif len(args) > 2:
1082             return False
1083
1084         if not depotPath.startswith("//"):
1085             return False
1086
1087         if len(dir) == 0:
1088             dir = depotPath
1089             atPos = dir.rfind("@")
1090             if atPos != -1:
1091                 dir = dir[0:atPos]
1092             hashPos = dir.rfind("#")
1093             if hashPos != -1:
1094                 dir = dir[0:hashPos]
1095
1096             if dir.endswith("..."):
1097                 dir = dir[:-3]
1098
1099             if dir.endswith("/"):
1100                dir = dir[:-1]
1101
1102             slashPos = dir.rfind("/")
1103             if slashPos != -1:
1104                 dir = dir[slashPos + 1:]
1105
1106         print "Importing from %s into %s" % (depotPath, dir)
1107         os.makedirs(dir)
1108         os.chdir(dir)
1109         system("git init")
1110         if not P4Sync.run(self, [depotPath]):
1111             return False
1112         os.wait()
1113         if self.branch != "master":
1114             system("git branch master p4")
1115             system("git checkout -f")
1116         return True
1117
1118 class HelpFormatter(optparse.IndentedHelpFormatter):
1119     def __init__(self):
1120         optparse.IndentedHelpFormatter.__init__(self)
1121
1122     def format_description(self, description):
1123         if description:
1124             return description + "\n"
1125         else:
1126             return ""
1127
1128 def printUsage(commands):
1129     print "usage: %s <command> [options]" % sys.argv[0]
1130     print ""
1131     print "valid commands: %s" % ", ".join(commands)
1132     print ""
1133     print "Try %s <command> --help for command specific help." % sys.argv[0]
1134     print ""
1135
1136 commands = {
1137     "debug" : P4Debug(),
1138     "clean-tags" : P4CleanTags(),
1139     "submit" : P4Submit(),
1140     "sync" : P4Sync(),
1141     "rebase" : P4Rebase(),
1142     "clone" : P4Clone()
1143 }
1144
1145 if len(sys.argv[1:]) == 0:
1146     printUsage(commands.keys())
1147     sys.exit(2)
1148
1149 cmd = ""
1150 cmdName = sys.argv[1]
1151 try:
1152     cmd = commands[cmdName]
1153 except KeyError:
1154     print "unknown command %s" % cmdName
1155     print ""
1156     printUsage(commands.keys())
1157     sys.exit(2)
1158
1159 options = cmd.options
1160 cmd.gitdir = gitdir
1161
1162 args = sys.argv[2:]
1163
1164 if len(options) > 0:
1165     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1166
1167     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1168                                    options,
1169                                    description = cmd.description,
1170                                    formatter = HelpFormatter())
1171
1172     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1173
1174 if cmd.needsGit:
1175     gitdir = cmd.gitdir
1176     if len(gitdir) == 0:
1177         gitdir = ".git"
1178         if not isValidGitDir(gitdir):
1179             cdup = os.popen("git rev-parse --show-cdup").read()[:-1]
1180             if isValidGitDir(cdup + "/" + gitdir):
1181                 os.chdir(cdup)
1182
1183     if not isValidGitDir(gitdir):
1184         if isValidGitDir(gitdir + "/.git"):
1185             gitdir += "/.git"
1186         else:
1187             die("fatal: cannot locate git repository at %s" % gitdir)
1188
1189     os.environ["GIT_DIR"] = gitdir
1190
1191 if not cmd.run(args):
1192     parser.print_help()
1193