Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit Added the possibility of skipping patches during git-p4 submit (d336c15)
   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
  11import optparse, sys, os, marshal, popen2, subprocess, shelve
  12import tempfile, getopt, sha, os.path, time, platform
  13from sets import Set;
  14
  15gitdir = os.environ.get("GIT_DIR", "")
  16
  17def mypopen(command):
  18    return os.popen(command, "rb");
  19
  20def p4CmdList(cmd):
  21    cmd = "p4 -G %s" % cmd
  22    pipe = os.popen(cmd, "rb")
  23
  24    result = []
  25    try:
  26        while True:
  27            entry = marshal.load(pipe)
  28            result.append(entry)
  29    except EOFError:
  30        pass
  31    pipe.close()
  32
  33    return result
  34
  35def p4Cmd(cmd):
  36    list = p4CmdList(cmd)
  37    result = {}
  38    for entry in list:
  39        result.update(entry)
  40    return result;
  41
  42def p4Where(depotPath):
  43    if not depotPath.endswith("/"):
  44        depotPath += "/"
  45    output = p4Cmd("where %s..." % depotPath)
  46    clientPath = ""
  47    if "path" in output:
  48        clientPath = output.get("path")
  49    elif "data" in output:
  50        data = output.get("data")
  51        lastSpace = data.rfind(" ")
  52        clientPath = data[lastSpace + 1:]
  53
  54    if clientPath.endswith("..."):
  55        clientPath = clientPath[:-3]
  56    return clientPath
  57
  58def die(msg):
  59    sys.stderr.write(msg + "\n")
  60    sys.exit(1)
  61
  62def currentGitBranch():
  63    return mypopen("git name-rev HEAD").read().split(" ")[1][:-1]
  64
  65def isValidGitDir(path):
  66    if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  67        return True;
  68    return False
  69
  70def system(cmd):
  71    if os.system(cmd) != 0:
  72        die("command failed: %s" % cmd)
  73
  74def extractLogMessageFromGitCommit(commit):
  75    logMessage = ""
  76    foundTitle = False
  77    for log in mypopen("git cat-file commit %s" % commit).readlines():
  78       if not foundTitle:
  79           if len(log) == 1:
  80               foundTitle = True
  81           continue
  82
  83       logMessage += log
  84    return logMessage
  85
  86def extractDepotPathAndChangeFromGitLog(log):
  87    values = {}
  88    for line in log.split("\n"):
  89        line = line.strip()
  90        if line.startswith("[git-p4:") and line.endswith("]"):
  91            line = line[8:-1].strip()
  92            for assignment in line.split(":"):
  93                variable = assignment.strip()
  94                value = ""
  95                equalPos = assignment.find("=")
  96                if equalPos != -1:
  97                    variable = assignment[:equalPos].strip()
  98                    value = assignment[equalPos + 1:].strip()
  99                    if value.startswith("\"") and value.endswith("\""):
 100                        value = value[1:-1]
 101                values[variable] = value
 102
 103    return values.get("depot-path"), values.get("change")
 104
 105def gitBranchExists(branch):
 106    proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 107    return proc.wait() == 0;
 108
 109class Command:
 110    def __init__(self):
 111        self.usage = "usage: %prog [options]"
 112        self.needsGit = True
 113
 114class P4Debug(Command):
 115    def __init__(self):
 116        Command.__init__(self)
 117        self.options = [
 118        ]
 119        self.description = "A tool to debug the output of p4 -G."
 120        self.needsGit = False
 121
 122    def run(self, args):
 123        for output in p4CmdList(" ".join(args)):
 124            print output
 125        return True
 126
 127class P4CleanTags(Command):
 128    def __init__(self):
 129        Command.__init__(self)
 130        self.options = [
 131#                optparse.make_option("--branch", dest="branch", default="refs/heads/master")
 132        ]
 133        self.description = "A tool to remove stale unused tags from incremental perforce imports."
 134    def run(self, args):
 135        branch = currentGitBranch()
 136        print "Cleaning out stale p4 import tags..."
 137        sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % branch)
 138        output = sout.read()
 139        try:
 140            tagIdx = output.index(" tags/p4/")
 141        except:
 142            print "Cannot find any p4/* tag. Nothing to do."
 143            sys.exit(0)
 144
 145        try:
 146            caretIdx = output.index("^")
 147        except:
 148            caretIdx = len(output) - 1
 149        rev = int(output[tagIdx + 9 : caretIdx])
 150
 151        allTags = mypopen("git tag -l p4/").readlines()
 152        for i in range(len(allTags)):
 153            allTags[i] = int(allTags[i][3:-1])
 154
 155        allTags.sort()
 156
 157        allTags.remove(rev)
 158
 159        for rev in allTags:
 160            print mypopen("git tag -d p4/%s" % rev).read()
 161
 162        print "%s tags removed." % len(allTags)
 163        return True
 164
 165class P4Submit(Command):
 166    def __init__(self):
 167        Command.__init__(self)
 168        self.options = [
 169                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 170                optparse.make_option("--origin", dest="origin"),
 171                optparse.make_option("--reset", action="store_true", dest="reset"),
 172                optparse.make_option("--log-substitutions", dest="substFile"),
 173                optparse.make_option("--noninteractive", action="store_false"),
 174                optparse.make_option("--dry-run", action="store_true"),
 175        ]
 176        self.description = "Submit changes from git to the perforce depot."
 177        self.usage += " [name of git branch to submit into perforce depot]"
 178        self.firstTime = True
 179        self.reset = False
 180        self.interactive = True
 181        self.dryRun = False
 182        self.substFile = ""
 183        self.firstTime = True
 184        self.origin = ""
 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 mypopen("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    def prepareLogMessage(self, template, message):
 206        result = ""
 207
 208        for line in template.split("\n"):
 209            if line.startswith("#"):
 210                result += line + "\n"
 211                continue
 212
 213            substituted = False
 214            for key in self.logSubstitutions.keys():
 215                if line.find(key) != -1:
 216                    value = self.logSubstitutions[key]
 217                    value = value.replace("%log%", message)
 218                    if value != "@remove@":
 219                        result += line.replace(key, value) + "\n"
 220                    substituted = True
 221                    break
 222
 223            if not substituted:
 224                result += line + "\n"
 225
 226        return result
 227
 228    def apply(self, id):
 229        print "Applying %s" % (mypopen("git log --max-count=1 --pretty=oneline %s" % id).read())
 230        diff = mypopen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 231        filesToAdd = set()
 232        filesToDelete = set()
 233        editedFiles = set()
 234        for line in diff:
 235            modifier = line[0]
 236            path = line[1:].strip()
 237            if modifier == "M":
 238                system("p4 edit \"%s\"" % path)
 239                editedFiles.add(path)
 240            elif modifier == "A":
 241                filesToAdd.add(path)
 242                if path in filesToDelete:
 243                    filesToDelete.remove(path)
 244            elif modifier == "D":
 245                filesToDelete.add(path)
 246                if path in filesToAdd:
 247                    filesToAdd.remove(path)
 248            else:
 249                die("unknown modifier %s for %s" % (modifier, path))
 250
 251        diffcmd = "git diff-tree -p --diff-filter=ACMRTUXB \"%s^\" \"%s\"" % (id, id)
 252        patchcmd = diffcmd + " | patch -p1"
 253
 254        if os.system(patchcmd + " --dry-run --silent") != 0:
 255            print "Unfortunately applying the change failed!"
 256            print "What do you want to do?"
 257            response = "x"
 258            while response != "s" and response != "a" and response != "w":
 259                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) ")
 260            if response == "s":
 261                print "Skipping! Good luck with the next patches..."
 262                return
 263            elif response == "a":
 264                os.system(patchcmd)
 265                if len(filesToAdd) > 0:
 266                    print "You may also want to call p4 add on the following files:"
 267                    print " ".join(filesToAdd)
 268                if len(filesToDelete):
 269                    print "The following files should be scheduled for deletion with p4 delete:"
 270                    print " ".join(filesToDelete)
 271                die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 272            elif response == "w":
 273                system(diffcmd + " > patch.txt")
 274                print "Patch saved to patch.txt in %s !" % self.clientPath
 275                die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 276
 277        system(patchcmd)
 278
 279        for f in filesToAdd:
 280            system("p4 add %s" % f)
 281        for f in filesToDelete:
 282            system("p4 revert %s" % f)
 283            system("p4 delete %s" % f)
 284
 285        logMessage = extractLogMessageFromGitCommit(id)
 286        logMessage = logMessage.replace("\n", "\n\t")
 287        logMessage = logMessage[:-1]
 288
 289        template = mypopen("p4 change -o").read()
 290
 291        if self.interactive:
 292            submitTemplate = self.prepareLogMessage(template, logMessage)
 293            diff = mypopen("p4 diff -du ...").read()
 294
 295            for newFile in filesToAdd:
 296                diff += "==== new file ====\n"
 297                diff += "--- /dev/null\n"
 298                diff += "+++ %s\n" % newFile
 299                f = open(newFile, "r")
 300                for line in f.readlines():
 301                    diff += "+" + line
 302                f.close()
 303
 304            separatorLine = "######## everything below this line is just the diff #######"
 305            if platform.system() == "Windows":
 306                separatorLine += "\r"
 307            separatorLine += "\n"
 308
 309            response = "e"
 310            firstIteration = True
 311            while response == "e":
 312                if not firstIteration:
 313                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 314                firstIteration = False
 315                if response == "e":
 316                    [handle, fileName] = tempfile.mkstemp()
 317                    tmpFile = os.fdopen(handle, "w+")
 318                    tmpFile.write(submitTemplate + separatorLine + diff)
 319                    tmpFile.close()
 320                    defaultEditor = "vi"
 321                    if platform.system() == "Windows":
 322                        defaultEditor = "notepad"
 323                    editor = os.environ.get("EDITOR", defaultEditor);
 324                    system(editor + " " + fileName)
 325                    tmpFile = open(fileName, "rb")
 326                    message = tmpFile.read()
 327                    tmpFile.close()
 328                    os.remove(fileName)
 329                    submitTemplate = message[:message.index(separatorLine)]
 330
 331            if response == "y" or response == "yes":
 332               if self.dryRun:
 333                   print submitTemplate
 334                   raw_input("Press return to continue...")
 335               else:
 336                    pipe = os.popen("p4 submit -i", "wb")
 337                    pipe.write(submitTemplate)
 338                    pipe.close()
 339            elif response == "s":
 340                for f in editedFiles:
 341                    system("p4 revert \"%s\"" % f);
 342                for f in filesToAdd:
 343                    system("p4 revert \"%s\"" % f);
 344                    system("rm %s" %f)
 345                for f in filesToDelete:
 346                    system("p4 delete \"%s\"" % f);
 347                return
 348            else:
 349                print "Not submitting!"
 350                self.interactive = False
 351        else:
 352            fileName = "submit.txt"
 353            file = open(fileName, "w+")
 354            file.write(self.prepareLogMessage(template, logMessage))
 355            file.close()
 356            print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 357
 358    def run(self, args):
 359        global gitdir
 360        # make gitdir absolute so we can cd out into the perforce checkout
 361        gitdir = os.path.abspath(gitdir)
 362        os.environ["GIT_DIR"] = gitdir
 363
 364        if len(args) == 0:
 365            self.master = currentGitBranch()
 366            if len(self.master) == 0 or not os.path.exists("%s/refs/heads/%s" % (gitdir, self.master)):
 367                die("Detecting current git branch failed!")
 368        elif len(args) == 1:
 369            self.master = args[0]
 370        else:
 371            return False
 372
 373        depotPath = ""
 374        if gitBranchExists("p4"):
 375            [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 376        if len(depotPath) == 0 and gitBranchExists("origin"):
 377            [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 378
 379        if len(depotPath) == 0:
 380            print "Internal error: cannot locate perforce depot path from existing branches"
 381            sys.exit(128)
 382
 383        self.clientPath = p4Where(depotPath)
 384
 385        if len(self.clientPath) == 0:
 386            print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 387            sys.exit(128)
 388
 389        print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 390        oldWorkingDirectory = os.getcwd()
 391        os.chdir(self.clientPath)
 392        response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 393        if response == "y" or response == "yes":
 394            system("p4 sync ...")
 395
 396        if len(self.origin) == 0:
 397            if gitBranchExists("p4"):
 398                self.origin = "p4"
 399            else:
 400                self.origin = "origin"
 401
 402        if self.reset:
 403            self.firstTime = True
 404
 405        if len(self.substFile) > 0:
 406            for line in open(self.substFile, "r").readlines():
 407                tokens = line[:-1].split("=")
 408                self.logSubstitutions[tokens[0]] = tokens[1]
 409
 410        self.check()
 411        self.configFile = gitdir + "/p4-git-sync.cfg"
 412        self.config = shelve.open(self.configFile, writeback=True)
 413
 414        if self.firstTime:
 415            self.start()
 416
 417        commits = self.config.get("commits", [])
 418
 419        while len(commits) > 0:
 420            self.firstTime = False
 421            commit = commits[0]
 422            commits = commits[1:]
 423            self.config["commits"] = commits
 424            self.apply(commit)
 425            if not self.interactive:
 426                break
 427
 428        self.config.close()
 429
 430        if len(commits) == 0:
 431            if self.firstTime:
 432                print "No changes found to apply between %s and current HEAD" % self.origin
 433            else:
 434                print "All changes applied!"
 435                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 436                if response == "y" or response == "yes":
 437                    os.chdir(oldWorkingDirectory)
 438                    rebase = P4Rebase()
 439                    rebase.run([])
 440            os.remove(self.configFile)
 441
 442        return True
 443
 444class P4Sync(Command):
 445    def __init__(self):
 446        Command.__init__(self)
 447        self.options = [
 448                optparse.make_option("--branch", dest="branch"),
 449                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 450                optparse.make_option("--changesfile", dest="changesFile"),
 451                optparse.make_option("--silent", dest="silent", action="store_true"),
 452                optparse.make_option("--known-branches", dest="knownBranches"),
 453                optparse.make_option("--data-cache", dest="dataCache", action="store_true"),
 454                optparse.make_option("--command-cache", dest="commandCache", action="store_true"),
 455                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true")
 456        ]
 457        self.description = """Imports from Perforce into a git repository.\n
 458    example:
 459    //depot/my/project/ -- to import the current head
 460    //depot/my/project/@all -- to import everything
 461    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 462
 463    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 464
 465        self.usage += " //depot/path[@revRange]"
 466
 467        self.dataCache = False
 468        self.commandCache = False
 469        self.silent = False
 470        self.knownBranches = Set()
 471        self.createdBranches = Set()
 472        self.committedChanges = Set()
 473        self.branch = ""
 474        self.detectBranches = False
 475        self.detectLabels = False
 476        self.changesFile = ""
 477
 478    def p4File(self, depotPath):
 479        return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 480
 481    def extractFilesFromCommit(self, commit):
 482        files = []
 483        fnum = 0
 484        while commit.has_key("depotFile%s" % fnum):
 485            path =  commit["depotFile%s" % fnum]
 486            if not path.startswith(self.depotPath):
 487    #            if not self.silent:
 488    #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 489                fnum = fnum + 1
 490                continue
 491
 492            file = {}
 493            file["path"] = path
 494            file["rev"] = commit["rev%s" % fnum]
 495            file["action"] = commit["action%s" % fnum]
 496            file["type"] = commit["type%s" % fnum]
 497            files.append(file)
 498            fnum = fnum + 1
 499        return files
 500
 501    def isSubPathOf(self, first, second):
 502        if not first.startswith(second):
 503            return False
 504        if first == second:
 505            return True
 506        return first[len(second)] == "/"
 507
 508    def branchesForCommit(self, files):
 509        branches = Set()
 510
 511        for file in files:
 512            relativePath = file["path"][len(self.depotPath):]
 513            # strip off the filename
 514            relativePath = relativePath[0:relativePath.rfind("/")]
 515
 516    #        if len(branches) == 0:
 517    #            branches.add(relativePath)
 518    #            knownBranches.add(relativePath)
 519    #            continue
 520
 521            ###### this needs more testing :)
 522            knownBranch = False
 523            for branch in branches:
 524                if relativePath == branch:
 525                    knownBranch = True
 526                    break
 527    #            if relativePath.startswith(branch):
 528                if self.isSubPathOf(relativePath, branch):
 529                    knownBranch = True
 530                    break
 531    #            if branch.startswith(relativePath):
 532                if self.isSubPathOf(branch, relativePath):
 533                    branches.remove(branch)
 534                    break
 535
 536            if knownBranch:
 537                continue
 538
 539            for branch in self.knownBranches:
 540                #if relativePath.startswith(branch):
 541                if self.isSubPathOf(relativePath, branch):
 542                    if len(branches) == 0:
 543                        relativePath = branch
 544                    else:
 545                        knownBranch = True
 546                    break
 547
 548            if knownBranch:
 549                continue
 550
 551            branches.add(relativePath)
 552            self.knownBranches.add(relativePath)
 553
 554        return branches
 555
 556    def findBranchParent(self, branchPrefix, files):
 557        for file in files:
 558            path = file["path"]
 559            if not path.startswith(branchPrefix):
 560                continue
 561            action = file["action"]
 562            if action != "integrate" and action != "branch":
 563                continue
 564            rev = file["rev"]
 565            depotPath = path + "#" + rev
 566
 567            log = p4CmdList("filelog \"%s\"" % depotPath)
 568            if len(log) != 1:
 569                print "eek! I got confused by the filelog of %s" % depotPath
 570                sys.exit(1);
 571
 572            log = log[0]
 573            if log["action0"] != action:
 574                print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 575                sys.exit(1);
 576
 577            branchAction = log["how0,0"]
 578    #        if branchAction == "branch into" or branchAction == "ignored":
 579    #            continue # ignore for branching
 580
 581            if not branchAction.endswith(" from"):
 582                continue # ignore for branching
 583    #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 584    #            sys.exit(1);
 585
 586            source = log["file0,0"]
 587            if source.startswith(branchPrefix):
 588                continue
 589
 590            lastSourceRev = log["erev0,0"]
 591
 592            sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 593            if len(sourceLog) != 1:
 594                print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 595                sys.exit(1);
 596            sourceLog = sourceLog[0]
 597
 598            relPath = source[len(self.depotPath):]
 599            # strip off the filename
 600            relPath = relPath[0:relPath.rfind("/")]
 601
 602            for branch in self.knownBranches:
 603                if self.isSubPathOf(relPath, branch):
 604    #                print "determined parent branch branch %s due to change in file %s" % (branch, source)
 605                    return branch
 606    #            else:
 607    #                print "%s is not a subpath of branch %s" % (relPath, branch)
 608
 609        return ""
 610
 611    def commit(self, details, files, branch, branchPrefix, parent = "", merged = ""):
 612        epoch = details["time"]
 613        author = details["user"]
 614
 615        self.gitStream.write("commit %s\n" % branch)
 616    #    gitStream.write("mark :%s\n" % details["change"])
 617        self.committedChanges.add(int(details["change"]))
 618        committer = ""
 619        if author in self.users:
 620            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 621        else:
 622            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 623
 624        self.gitStream.write("committer %s\n" % committer)
 625
 626        self.gitStream.write("data <<EOT\n")
 627        self.gitStream.write(details["desc"])
 628        self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 629        self.gitStream.write("EOT\n\n")
 630
 631        if len(parent) > 0:
 632            self.gitStream.write("from %s\n" % parent)
 633
 634        if len(merged) > 0:
 635            self.gitStream.write("merge %s\n" % merged)
 636
 637        for file in files:
 638            path = file["path"]
 639            if not path.startswith(branchPrefix):
 640    #            if not silent:
 641    #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 642                continue
 643            rev = file["rev"]
 644            depotPath = path + "#" + rev
 645            relPath = path[len(branchPrefix):]
 646            action = file["action"]
 647
 648            if file["type"] == "apple":
 649                print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 650                continue
 651
 652            if action == "delete":
 653                self.gitStream.write("D %s\n" % relPath)
 654            else:
 655                mode = 644
 656                if file["type"].startswith("x"):
 657                    mode = 755
 658
 659                data = self.p4File(depotPath)
 660
 661                self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 662                self.gitStream.write("data %s\n" % len(data))
 663                self.gitStream.write(data)
 664                self.gitStream.write("\n")
 665
 666        self.gitStream.write("\n")
 667
 668        change = int(details["change"])
 669
 670        self.lastChange = change
 671
 672        if change in self.labels:
 673            label = self.labels[change]
 674            labelDetails = label[0]
 675            labelRevisions = label[1]
 676
 677            files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 678
 679            if len(files) == len(labelRevisions):
 680
 681                cleanedFiles = {}
 682                for info in files:
 683                    if info["action"] == "delete":
 684                        continue
 685                    cleanedFiles[info["depotFile"]] = info["rev"]
 686
 687                if cleanedFiles == labelRevisions:
 688                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 689                    self.gitStream.write("from %s\n" % branch)
 690
 691                    owner = labelDetails["Owner"]
 692                    tagger = ""
 693                    if author in self.users:
 694                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 695                    else:
 696                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 697                    self.gitStream.write("tagger %s\n" % tagger)
 698                    self.gitStream.write("data <<EOT\n")
 699                    self.gitStream.write(labelDetails["Description"])
 700                    self.gitStream.write("EOT\n\n")
 701
 702                else:
 703                    if not self.silent:
 704                        print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 705
 706            else:
 707                if not self.silent:
 708                    print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 709
 710    def extractFilesInCommitToBranch(self, files, branchPrefix):
 711        newFiles = []
 712
 713        for file in files:
 714            path = file["path"]
 715            if path.startswith(branchPrefix):
 716                newFiles.append(file)
 717
 718        return newFiles
 719
 720    def findBranchSourceHeuristic(self, files, branch, branchPrefix):
 721        for file in files:
 722            action = file["action"]
 723            if action != "integrate" and action != "branch":
 724                continue
 725            path = file["path"]
 726            rev = file["rev"]
 727            depotPath = path + "#" + rev
 728
 729            log = p4CmdList("filelog \"%s\"" % depotPath)
 730            if len(log) != 1:
 731                print "eek! I got confused by the filelog of %s" % depotPath
 732                sys.exit(1);
 733
 734            log = log[0]
 735            if log["action0"] != action:
 736                print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 737                sys.exit(1);
 738
 739            branchAction = log["how0,0"]
 740
 741            if not branchAction.endswith(" from"):
 742                continue # ignore for branching
 743    #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 744    #            sys.exit(1);
 745
 746            source = log["file0,0"]
 747            if source.startswith(branchPrefix):
 748                continue
 749
 750            lastSourceRev = log["erev0,0"]
 751
 752            sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 753            if len(sourceLog) != 1:
 754                print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 755                sys.exit(1);
 756            sourceLog = sourceLog[0]
 757
 758            relPath = source[len(self.depotPath):]
 759            # strip off the filename
 760            relPath = relPath[0:relPath.rfind("/")]
 761
 762            for candidate in self.knownBranches:
 763                if self.isSubPathOf(relPath, candidate) and candidate != branch:
 764                    return candidate
 765
 766        return ""
 767
 768    def changeIsBranchMerge(self, sourceBranch, destinationBranch, change):
 769        sourceFiles = {}
 770        for file in p4CmdList("files %s...@%s" % (self.depotPath + sourceBranch + "/", change)):
 771            if file["action"] == "delete":
 772                continue
 773            sourceFiles[file["depotFile"]] = file
 774
 775        destinationFiles = {}
 776        for file in p4CmdList("files %s...@%s" % (self.depotPath + destinationBranch + "/", change)):
 777            destinationFiles[file["depotFile"]] = file
 778
 779        for fileName in sourceFiles.keys():
 780            integrations = []
 781            deleted = False
 782            integrationCount = 0
 783            for integration in p4CmdList("integrated \"%s\"" % fileName):
 784                toFile = integration["fromFile"] # yes, it's true, it's fromFile
 785                if not toFile in destinationFiles:
 786                    continue
 787                destFile = destinationFiles[toFile]
 788                if destFile["action"] == "delete":
 789    #                print "file %s has been deleted in %s" % (fileName, toFile)
 790                    deleted = True
 791                    break
 792                integrationCount += 1
 793                if integration["how"] == "branch from":
 794                    continue
 795
 796                if int(integration["change"]) == change:
 797                    integrations.append(integration)
 798                    continue
 799                if int(integration["change"]) > change:
 800                    continue
 801
 802                destRev = int(destFile["rev"])
 803
 804                startRev = integration["startFromRev"][1:]
 805                if startRev == "none":
 806                    startRev = 0
 807                else:
 808                    startRev = int(startRev)
 809
 810                endRev = integration["endFromRev"][1:]
 811                if endRev == "none":
 812                    endRev = 0
 813                else:
 814                    endRev = int(endRev)
 815
 816                initialBranch = (destRev == 1 and integration["how"] != "branch into")
 817                inRange = (destRev >= startRev and destRev <= endRev)
 818                newer = (destRev > startRev and destRev > endRev)
 819
 820                if initialBranch or inRange or newer:
 821                    integrations.append(integration)
 822
 823            if deleted:
 824                continue
 825
 826            if len(integrations) == 0 and integrationCount > 1:
 827                print "file %s was not integrated from %s into %s" % (fileName, sourceBranch, destinationBranch)
 828                return False
 829
 830        return True
 831
 832    def getUserMap(self):
 833        self.users = {}
 834
 835        for output in p4CmdList("users"):
 836            if not output.has_key("User"):
 837                continue
 838            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 839
 840    def getLabels(self):
 841        self.labels = {}
 842
 843        l = p4CmdList("labels %s..." % self.depotPath)
 844        if len(l) > 0 and not self.silent:
 845            print "Finding files belonging to labels in %s" % self.depotPath
 846
 847        for output in l:
 848            label = output["label"]
 849            revisions = {}
 850            newestChange = 0
 851            for file in p4CmdList("files //...@%s" % label):
 852                revisions[file["depotFile"]] = file["rev"]
 853                change = int(file["change"])
 854                if change > newestChange:
 855                    newestChange = change
 856
 857            self.labels[newestChange] = [output, revisions]
 858
 859    def run(self, args):
 860        self.depotPath = ""
 861        self.changeRange = ""
 862        self.initialParent = ""
 863        self.previousDepotPath = ""
 864
 865        if len(self.branch) == 0:
 866            self.branch = "p4"
 867
 868        if len(args) == 0:
 869            if not gitBranchExists(self.branch) and gitBranchExists("origin"):
 870                if not self.silent:
 871                    print "Creating %s branch in git repository based on origin" % self.branch
 872                system("git branch %s origin" % self.branch)
 873
 874            [self.previousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(self.branch))
 875            if len(self.previousDepotPath) > 0 and len(p4Change) > 0:
 876                p4Change = int(p4Change) + 1
 877                self.depotPath = self.previousDepotPath
 878                self.changeRange = "@%s,#head" % p4Change
 879                self.initialParent = self.branch
 880                if not self.silent:
 881                    print "Performing incremental import into %s git branch" % self.branch
 882
 883        self.branch = "refs/heads/" + self.branch
 884
 885        if len(self.depotPath) != 0:
 886            self.depotPath = self.depotPath[:-1]
 887
 888        if len(args) == 0 and len(self.depotPath) != 0:
 889            if not self.silent:
 890                print "Depot path: %s" % self.depotPath
 891        elif len(args) != 1:
 892            return False
 893        else:
 894            if len(self.depotPath) != 0 and self.depotPath != args[0]:
 895                print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.depotPath, args[0])
 896                sys.exit(1)
 897            self.depotPath = args[0]
 898
 899        self.revision = ""
 900        self.users = {}
 901        self.lastChange = 0
 902
 903        if self.depotPath.find("@") != -1:
 904            atIdx = self.depotPath.index("@")
 905            self.changeRange = self.depotPath[atIdx:]
 906            if self.changeRange == "@all":
 907                self.changeRange = ""
 908            elif self.changeRange.find(",") == -1:
 909                self.revision = self.changeRange
 910                self.changeRange = ""
 911            self.depotPath = self.depotPath[0:atIdx]
 912        elif self.depotPath.find("#") != -1:
 913            hashIdx = self.depotPath.index("#")
 914            self.revision = self.depotPath[hashIdx:]
 915            self.depotPath = self.depotPath[0:hashIdx]
 916        elif len(self.previousDepotPath) == 0:
 917            self.revision = "#head"
 918
 919        if self.depotPath.endswith("..."):
 920            self.depotPath = self.depotPath[:-3]
 921
 922        if not self.depotPath.endswith("/"):
 923            self.depotPath += "/"
 924
 925        self.getUserMap()
 926        self.labels = {}
 927        if self.detectLabels:
 928            self.getLabels();
 929
 930        if len(self.changeRange) == 0:
 931            try:
 932                sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % self.branch)
 933                output = sout.read()
 934                if output.endswith("\n"):
 935                    output = output[:-1]
 936                tagIdx = output.index(" tags/p4/")
 937                caretIdx = output.find("^")
 938                endPos = len(output)
 939                if caretIdx != -1:
 940                    endPos = caretIdx
 941                self.rev = int(output[tagIdx + 9 : endPos]) + 1
 942                self.changeRange = "@%s,#head" % self.rev
 943                self.initialParent = mypopen("git rev-parse %s" % self.branch).read()[:-1]
 944            except:
 945                pass
 946
 947        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
 948
 949        importProcess = subprocess.Popen(["git", "fast-import"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE);
 950        self.gitOutput = importProcess.stdout
 951        self.gitStream = importProcess.stdin
 952        self.gitError = importProcess.stderr
 953
 954        if len(self.revision) > 0:
 955            print "Doing initial import of %s from revision %s" % (self.depotPath, self.revision)
 956
 957            details = { "user" : "git perforce import user", "time" : int(time.time()) }
 958            details["desc"] = "Initial import of %s from the state at revision %s" % (self.depotPath, self.revision)
 959            details["change"] = self.revision
 960            newestRevision = 0
 961
 962            fileCnt = 0
 963            for info in p4CmdList("files %s...%s" % (self.depotPath, self.revision)):
 964                change = int(info["change"])
 965                if change > newestRevision:
 966                    newestRevision = change
 967
 968                if info["action"] == "delete":
 969                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
 970                    #fileCnt = fileCnt + 1
 971                    continue
 972
 973                for prop in [ "depotFile", "rev", "action", "type" ]:
 974                    details["%s%s" % (prop, fileCnt)] = info[prop]
 975
 976                fileCnt = fileCnt + 1
 977
 978            details["change"] = newestRevision
 979
 980            try:
 981                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPath)
 982            except IOError:
 983                print "IO error with git fast-import. Is your git version recent enough?"
 984                print self.gitError.read()
 985
 986        else:
 987            changes = []
 988
 989            if len(self.changesFile) > 0:
 990                output = open(self.changesFile).readlines()
 991                changeSet = Set()
 992                for line in output:
 993                    changeSet.add(int(line))
 994
 995                for change in changeSet:
 996                    changes.append(change)
 997
 998                changes.sort()
 999            else:
1000                output = mypopen("p4 changes %s...%s" % (self.depotPath, self.changeRange)).readlines()
1001
1002                for line in output:
1003                    changeNum = line.split(" ")[1]
1004                    changes.append(changeNum)
1005
1006                changes.reverse()
1007
1008            if len(changes) == 0:
1009                if not self.silent:
1010                    print "no changes to import!"
1011                return True
1012
1013            cnt = 1
1014            for change in changes:
1015                description = p4Cmd("describe %s" % change)
1016
1017                if not self.silent:
1018                    sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1019                    sys.stdout.flush()
1020                cnt = cnt + 1
1021
1022                try:
1023                    files = self.extractFilesFromCommit(description)
1024                    if self.detectBranches:
1025                        for branch in self.branchesForCommit(files):
1026                            self.knownBranches.add(branch)
1027                            branchPrefix = self.depotPath + branch + "/"
1028
1029                            filesForCommit = self.extractFilesInCommitToBranch(files, branchPrefix)
1030
1031                            merged = ""
1032                            parent = ""
1033                            ########### remove cnt!!!
1034                            if branch not in self.createdBranches and cnt > 2:
1035                                self.createdBranches.add(branch)
1036                                parent = self.findBranchParent(branchPrefix, files)
1037                                if parent == branch:
1038                                    parent = ""
1039            #                    elif len(parent) > 0:
1040            #                        print "%s branched off of %s" % (branch, parent)
1041
1042                            if len(parent) == 0:
1043                                merged = self.findBranchSourceHeuristic(filesForCommit, branch, branchPrefix)
1044                                if len(merged) > 0:
1045                                    print "change %s could be a merge from %s into %s" % (description["change"], merged, branch)
1046                                    if not self.changeIsBranchMerge(merged, branch, int(description["change"])):
1047                                        merged = ""
1048
1049                            branch = "refs/heads/" + branch
1050                            if len(parent) > 0:
1051                                parent = "refs/heads/" + parent
1052                            if len(merged) > 0:
1053                                merged = "refs/heads/" + merged
1054                            self.commit(description, files, branch, branchPrefix, parent, merged)
1055                    else:
1056                        self.commit(description, files, self.branch, self.depotPath, self.initialParent)
1057                        self.initialParent = ""
1058                except IOError:
1059                    print self.gitError.read()
1060                    sys.exit(1)
1061
1062        if not self.silent:
1063            print ""
1064
1065
1066        self.gitStream.close()
1067        self.gitOutput.close()
1068        self.gitError.close()
1069        importProcess.wait()
1070
1071        return True
1072
1073class P4Rebase(Command):
1074    def __init__(self):
1075        Command.__init__(self)
1076        self.options = [ ]
1077        self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
1078
1079    def run(self, args):
1080        sync = P4Sync()
1081        sync.run([])
1082        print "Rebasing the current branch"
1083        oldHead = mypopen("git rev-parse HEAD").read()[:-1]
1084        system("git rebase p4")
1085        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1086        return True
1087
1088class P4Clone(P4Sync):
1089    def __init__(self):
1090        P4Sync.__init__(self)
1091        self.description = "Creates a new git repository and imports from Perforce into it"
1092        self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1093        self.needsGit = False
1094
1095    def run(self, args):
1096        if len(args) < 1:
1097            return False
1098        depotPath = args[0]
1099        dir = ""
1100        if len(args) == 2:
1101            dir = args[1]
1102        elif len(args) > 2:
1103            return False
1104
1105        if not depotPath.startswith("//"):
1106            return False
1107
1108        if len(dir) == 0:
1109            dir = depotPath
1110            atPos = dir.rfind("@")
1111            if atPos != -1:
1112                dir = dir[0:atPos]
1113            hashPos = dir.rfind("#")
1114            if hashPos != -1:
1115                dir = dir[0:hashPos]
1116
1117            if dir.endswith("..."):
1118                dir = dir[:-3]
1119
1120            if dir.endswith("/"):
1121               dir = dir[:-1]
1122
1123            slashPos = dir.rfind("/")
1124            if slashPos != -1:
1125                dir = dir[slashPos + 1:]
1126
1127        print "Importing from %s into %s" % (depotPath, dir)
1128        os.makedirs(dir)
1129        os.chdir(dir)
1130        system("git init")
1131        if not P4Sync.run(self, [depotPath]):
1132            return False
1133        if self.branch != "master":
1134            system("git branch master p4")
1135            system("git checkout -f")
1136        return True
1137
1138class HelpFormatter(optparse.IndentedHelpFormatter):
1139    def __init__(self):
1140        optparse.IndentedHelpFormatter.__init__(self)
1141
1142    def format_description(self, description):
1143        if description:
1144            return description + "\n"
1145        else:
1146            return ""
1147
1148def printUsage(commands):
1149    print "usage: %s <command> [options]" % sys.argv[0]
1150    print ""
1151    print "valid commands: %s" % ", ".join(commands)
1152    print ""
1153    print "Try %s <command> --help for command specific help." % sys.argv[0]
1154    print ""
1155
1156commands = {
1157    "debug" : P4Debug(),
1158    "clean-tags" : P4CleanTags(),
1159    "submit" : P4Submit(),
1160    "sync" : P4Sync(),
1161    "rebase" : P4Rebase(),
1162    "clone" : P4Clone()
1163}
1164
1165if len(sys.argv[1:]) == 0:
1166    printUsage(commands.keys())
1167    sys.exit(2)
1168
1169cmd = ""
1170cmdName = sys.argv[1]
1171try:
1172    cmd = commands[cmdName]
1173except KeyError:
1174    print "unknown command %s" % cmdName
1175    print ""
1176    printUsage(commands.keys())
1177    sys.exit(2)
1178
1179options = cmd.options
1180cmd.gitdir = gitdir
1181
1182args = sys.argv[2:]
1183
1184if len(options) > 0:
1185    options.append(optparse.make_option("--git-dir", dest="gitdir"))
1186
1187    parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1188                                   options,
1189                                   description = cmd.description,
1190                                   formatter = HelpFormatter())
1191
1192    (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1193
1194if cmd.needsGit:
1195    gitdir = cmd.gitdir
1196    if len(gitdir) == 0:
1197        gitdir = ".git"
1198        if not isValidGitDir(gitdir):
1199            gitdir = mypopen("git rev-parse --git-dir").read()[:-1]
1200
1201    if not isValidGitDir(gitdir):
1202        if isValidGitDir(gitdir + "/.git"):
1203            gitdir += "/.git"
1204        else:
1205            die("fatal: cannot locate git repository at %s" % gitdir)
1206
1207    os.environ["GIT_DIR"] = gitdir
1208
1209if not cmd.run(args):
1210    parser.print_help()
1211