Andrew's git - gitweb.git/blob

aa85800d697f25518886dcd5d1826eb1eef91958
   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, shelve
  12import tempfile, getopt, sha, os.path, time
  13from sets import Set;
  14
  15gitdir = os.environ.get("GIT_DIR", "")
  16
  17def 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
  32def p4Cmd(cmd):
  33    list = p4CmdList(cmd)
  34    result = {}
  35    for entry in list:
  36        result.update(entry)
  37    return result;
  38
  39def 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
  55def die(msg):
  56    sys.stderr.write(msg + "\n")
  57    sys.exit(1)
  58
  59def currentGitBranch():
  60    return os.popen("git name-rev HEAD").read().split(" ")[1][:-1]
  61
  62def 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
  67def system(cmd):
  68    if os.system(cmd) != 0:
  69        die("command failed: %s" % cmd)
  70
  71def 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
  83def 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
 102def gitBranchExists(branch):
 103    if os.system("git rev-parse %s 2>/dev/null >/dev/null" % branch) == 0:
 104        return True
 105    return False
 106
 107class Command:
 108    def __init__(self):
 109        self.usage = "usage: %prog [options]"
 110        self.needsGit = True
 111
 112class 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
 125class 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
 163class 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
 410class 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        ]
 422        self.description = """Imports from Perforce into a git repository.\n
 423    example:
 424    //depot/my/project/ -- to import the current head
 425    //depot/my/project/@all -- to import everything
 426    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 427
 428    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 429
 430        self.usage += " //depot/path[@revRange]"
 431
 432        self.dataCache = False
 433        self.commandCache = False
 434        self.silent = False
 435        self.knownBranches = Set()
 436        self.createdBranches = Set()
 437        self.committedChanges = Set()
 438        self.branch = ""
 439        self.detectBranches = False
 440        self.changesFile = ""
 441
 442    def p4File(self, depotPath):
 443        return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 444
 445    def extractFilesFromCommit(self, commit):
 446        files = []
 447        fnum = 0
 448        while commit.has_key("depotFile%s" % fnum):
 449            path =  commit["depotFile%s" % fnum]
 450            if not path.startswith(self.globalPrefix):
 451    #            if not self.silent:
 452    #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.globalPrefix, change)
 453                fnum = fnum + 1
 454                continue
 455
 456            file = {}
 457            file["path"] = path
 458            file["rev"] = commit["rev%s" % fnum]
 459            file["action"] = commit["action%s" % fnum]
 460            file["type"] = commit["type%s" % fnum]
 461            files.append(file)
 462            fnum = fnum + 1
 463        return files
 464
 465    def isSubPathOf(self, first, second):
 466        if not first.startswith(second):
 467            return False
 468        if first == second:
 469            return True
 470        return first[len(second)] == "/"
 471
 472    def branchesForCommit(self, files):
 473        branches = Set()
 474
 475        for file in files:
 476            relativePath = file["path"][len(self.globalPrefix):]
 477            # strip off the filename
 478            relativePath = relativePath[0:relativePath.rfind("/")]
 479
 480    #        if len(branches) == 0:
 481    #            branches.add(relativePath)
 482    #            knownBranches.add(relativePath)
 483    #            continue
 484
 485            ###### this needs more testing :)
 486            knownBranch = False
 487            for branch in branches:
 488                if relativePath == branch:
 489                    knownBranch = True
 490                    break
 491    #            if relativePath.startswith(branch):
 492                if self.isSubPathOf(relativePath, branch):
 493                    knownBranch = True
 494                    break
 495    #            if branch.startswith(relativePath):
 496                if self.isSubPathOf(branch, relativePath):
 497                    branches.remove(branch)
 498                    break
 499
 500            if knownBranch:
 501                continue
 502
 503            for branch in self.knownBranches:
 504                #if relativePath.startswith(branch):
 505                if self.isSubPathOf(relativePath, branch):
 506                    if len(branches) == 0:
 507                        relativePath = branch
 508                    else:
 509                        knownBranch = True
 510                    break
 511
 512            if knownBranch:
 513                continue
 514
 515            branches.add(relativePath)
 516            self.knownBranches.add(relativePath)
 517
 518        return branches
 519
 520    def findBranchParent(self, branchPrefix, files):
 521        for file in files:
 522            path = file["path"]
 523            if not path.startswith(branchPrefix):
 524                continue
 525            action = file["action"]
 526            if action != "integrate" and action != "branch":
 527                continue
 528            rev = file["rev"]
 529            depotPath = path + "#" + rev
 530
 531            log = p4CmdList("filelog \"%s\"" % depotPath)
 532            if len(log) != 1:
 533                print "eek! I got confused by the filelog of %s" % depotPath
 534                sys.exit(1);
 535
 536            log = log[0]
 537            if log["action0"] != action:
 538                print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 539                sys.exit(1);
 540
 541            branchAction = log["how0,0"]
 542    #        if branchAction == "branch into" or branchAction == "ignored":
 543    #            continue # ignore for branching
 544
 545            if not branchAction.endswith(" from"):
 546                continue # ignore for branching
 547    #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 548    #            sys.exit(1);
 549
 550            source = log["file0,0"]
 551            if source.startswith(branchPrefix):
 552                continue
 553
 554            lastSourceRev = log["erev0,0"]
 555
 556            sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 557            if len(sourceLog) != 1:
 558                print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 559                sys.exit(1);
 560            sourceLog = sourceLog[0]
 561
 562            relPath = source[len(self.globalPrefix):]
 563            # strip off the filename
 564            relPath = relPath[0:relPath.rfind("/")]
 565
 566            for branch in self.knownBranches:
 567                if self.isSubPathOf(relPath, branch):
 568    #                print "determined parent branch branch %s due to change in file %s" % (branch, source)
 569                    return branch
 570    #            else:
 571    #                print "%s is not a subpath of branch %s" % (relPath, branch)
 572
 573        return ""
 574
 575    def commit(self, details, files, branch, branchPrefix, parent = "", merged = ""):
 576        epoch = details["time"]
 577        author = details["user"]
 578
 579        self.gitStream.write("commit %s\n" % branch)
 580    #    gitStream.write("mark :%s\n" % details["change"])
 581        self.committedChanges.add(int(details["change"]))
 582        committer = ""
 583        if author in self.users:
 584            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 585        else:
 586            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 587
 588        self.gitStream.write("committer %s\n" % committer)
 589
 590        self.gitStream.write("data <<EOT\n")
 591        self.gitStream.write(details["desc"])
 592        self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 593        self.gitStream.write("EOT\n\n")
 594
 595        if len(parent) > 0:
 596            self.gitStream.write("from %s\n" % parent)
 597
 598        if len(merged) > 0:
 599            self.gitStream.write("merge %s\n" % merged)
 600
 601        for file in files:
 602            path = file["path"]
 603            if not path.startswith(branchPrefix):
 604    #            if not silent:
 605    #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 606                continue
 607            rev = file["rev"]
 608            depotPath = path + "#" + rev
 609            relPath = path[len(branchPrefix):]
 610            action = file["action"]
 611
 612            if file["type"] == "apple":
 613                print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 614                continue
 615
 616            if action == "delete":
 617                self.gitStream.write("D %s\n" % relPath)
 618            else:
 619                mode = 644
 620                if file["type"].startswith("x"):
 621                    mode = 755
 622
 623                data = self.p4File(depotPath)
 624
 625                self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 626                self.gitStream.write("data %s\n" % len(data))
 627                self.gitStream.write(data)
 628                self.gitStream.write("\n")
 629
 630        self.gitStream.write("\n")
 631
 632        change = int(details["change"])
 633
 634        self.lastChange = change
 635
 636        if change in self.labels:
 637            label = self.labels[change]
 638            labelDetails = label[0]
 639            labelRevisions = label[1]
 640
 641            files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 642
 643            if len(files) == len(labelRevisions):
 644
 645                cleanedFiles = {}
 646                for info in files:
 647                    if info["action"] == "delete":
 648                        continue
 649                    cleanedFiles[info["depotFile"]] = info["rev"]
 650
 651                if cleanedFiles == labelRevisions:
 652                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 653                    self.gitStream.write("from %s\n" % branch)
 654
 655                    owner = labelDetails["Owner"]
 656                    tagger = ""
 657                    if author in self.users:
 658                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 659                    else:
 660                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 661                    self.gitStream.write("tagger %s\n" % tagger)
 662                    self.gitStream.write("data <<EOT\n")
 663                    self.gitStream.write(labelDetails["Description"])
 664                    self.gitStream.write("EOT\n\n")
 665
 666                else:
 667                    if not self.silent:
 668                        print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 669
 670            else:
 671                if not self.silent:
 672                    print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 673
 674    def extractFilesInCommitToBranch(self, files, branchPrefix):
 675        newFiles = []
 676
 677        for file in files:
 678            path = file["path"]
 679            if path.startswith(branchPrefix):
 680                newFiles.append(file)
 681
 682        return newFiles
 683
 684    def findBranchSourceHeuristic(self, files, branch, branchPrefix):
 685        for file in files:
 686            action = file["action"]
 687            if action != "integrate" and action != "branch":
 688                continue
 689            path = file["path"]
 690            rev = file["rev"]
 691            depotPath = path + "#" + rev
 692
 693            log = p4CmdList("filelog \"%s\"" % depotPath)
 694            if len(log) != 1:
 695                print "eek! I got confused by the filelog of %s" % depotPath
 696                sys.exit(1);
 697
 698            log = log[0]
 699            if log["action0"] != action:
 700                print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 701                sys.exit(1);
 702
 703            branchAction = log["how0,0"]
 704
 705            if not branchAction.endswith(" from"):
 706                continue # ignore for branching
 707    #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 708    #            sys.exit(1);
 709
 710            source = log["file0,0"]
 711            if source.startswith(branchPrefix):
 712                continue
 713
 714            lastSourceRev = log["erev0,0"]
 715
 716            sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 717            if len(sourceLog) != 1:
 718                print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 719                sys.exit(1);
 720            sourceLog = sourceLog[0]
 721
 722            relPath = source[len(self.globalPrefix):]
 723            # strip off the filename
 724            relPath = relPath[0:relPath.rfind("/")]
 725
 726            for candidate in self.knownBranches:
 727                if self.isSubPathOf(relPath, candidate) and candidate != branch:
 728                    return candidate
 729
 730        return ""
 731
 732    def changeIsBranchMerge(self, sourceBranch, destinationBranch, change):
 733        sourceFiles = {}
 734        for file in p4CmdList("files %s...@%s" % (self.globalPrefix + sourceBranch + "/", change)):
 735            if file["action"] == "delete":
 736                continue
 737            sourceFiles[file["depotFile"]] = file
 738
 739        destinationFiles = {}
 740        for file in p4CmdList("files %s...@%s" % (self.globalPrefix + destinationBranch + "/", change)):
 741            destinationFiles[file["depotFile"]] = file
 742
 743        for fileName in sourceFiles.keys():
 744            integrations = []
 745            deleted = False
 746            integrationCount = 0
 747            for integration in p4CmdList("integrated \"%s\"" % fileName):
 748                toFile = integration["fromFile"] # yes, it's true, it's fromFile
 749                if not toFile in destinationFiles:
 750                    continue
 751                destFile = destinationFiles[toFile]
 752                if destFile["action"] == "delete":
 753    #                print "file %s has been deleted in %s" % (fileName, toFile)
 754                    deleted = True
 755                    break
 756                integrationCount += 1
 757                if integration["how"] == "branch from":
 758                    continue
 759
 760                if int(integration["change"]) == change:
 761                    integrations.append(integration)
 762                    continue
 763                if int(integration["change"]) > change:
 764                    continue
 765
 766                destRev = int(destFile["rev"])
 767
 768                startRev = integration["startFromRev"][1:]
 769                if startRev == "none":
 770                    startRev = 0
 771                else:
 772                    startRev = int(startRev)
 773
 774                endRev = integration["endFromRev"][1:]
 775                if endRev == "none":
 776                    endRev = 0
 777                else:
 778                    endRev = int(endRev)
 779
 780                initialBranch = (destRev == 1 and integration["how"] != "branch into")
 781                inRange = (destRev >= startRev and destRev <= endRev)
 782                newer = (destRev > startRev and destRev > endRev)
 783
 784                if initialBranch or inRange or newer:
 785                    integrations.append(integration)
 786
 787            if deleted:
 788                continue
 789
 790            if len(integrations) == 0 and integrationCount > 1:
 791                print "file %s was not integrated from %s into %s" % (fileName, sourceBranch, destinationBranch)
 792                return False
 793
 794        return True
 795
 796    def getUserMap(self):
 797        self.users = {}
 798
 799        for output in p4CmdList("users"):
 800            if not output.has_key("User"):
 801                continue
 802            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 803
 804    def getLabels(self):
 805        self.labels = {}
 806
 807        l = p4CmdList("labels %s..." % self.globalPrefix)
 808        if len(l) > 0:
 809            print "Finding files belonging to labels in %s" % self.globalPrefix
 810
 811        for output in l:
 812            label = output["label"]
 813            revisions = {}
 814            newestChange = 0
 815            for file in p4CmdList("files //...@%s" % label):
 816                revisions[file["depotFile"]] = file["rev"]
 817                change = int(file["change"])
 818                if change > newestChange:
 819                    newestChange = change
 820
 821            self.labels[newestChange] = [output, revisions]
 822
 823    def run(self, args):
 824        self.globalPrefix = ""
 825        self.changeRange = ""
 826        self.initialParent = ""
 827        self.tagLastChange = True
 828
 829        if len(self.branch) == 0:
 830            self.branch = "p4"
 831
 832        if len(args) == 0:
 833            if not gitBranchExists(self.branch) and gitBranchExists("origin"):
 834                if not self.silent:
 835                    print "Creating %s branch in git repository based on origin" % self.branch
 836                system("git branch %s origin" % self.branch)
 837
 838            [self.previousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(self.branch))
 839            if len(self.previousDepotPath) > 0 and len(p4Change) > 0:
 840                p4Change = int(p4Change) + 1
 841                self.globalPrefix = self.previousDepotPath
 842                self.changeRange = "@%s,#head" % p4Change
 843                self.initialParent = self.branch
 844                self.tagLastChange = False
 845                if not self.silent:
 846                    print "Performing incremental import into %s git branch" % self.branch
 847
 848        self.branch = "refs/heads/" + self.branch
 849
 850        if len(self.globalPrefix) == 0:
 851            self.globalPrefix = self.previousDepotPath = os.popen("git repo-config --get p4.depotpath").read()
 852
 853        if len(self.globalPrefix) != 0:
 854            self.globalPrefix = self.globalPrefix[:-1]
 855
 856        if len(args) == 0 and len(self.globalPrefix) != 0:
 857            if not self.silent:
 858                print "Depot path: %s" % self.globalPrefix
 859        elif len(args) != 1:
 860            return False
 861        else:
 862            if len(self.globalPrefix) != 0 and self.globalPrefix != args[0]:
 863                print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.globalPrefix, args[0])
 864                sys.exit(1)
 865            self.globalPrefix = args[0]
 866
 867        self.revision = ""
 868        self.users = {}
 869        self.lastChange = 0
 870        self.initialTag = ""
 871
 872        if self.globalPrefix.find("@") != -1:
 873            atIdx = self.globalPrefix.index("@")
 874            self.changeRange = self.globalPrefix[atIdx:]
 875            if self.changeRange == "@all":
 876                self.changeRange = ""
 877            elif self.changeRange.find(",") == -1:
 878                self.revision = self.changeRange
 879                self.changeRange = ""
 880            self.globalPrefix = self.globalPrefix[0:atIdx]
 881        elif self.globalPrefix.find("#") != -1:
 882            hashIdx = self.globalPrefix.index("#")
 883            self.revision = self.globalPrefix[hashIdx:]
 884            self.globalPrefix = self.globalPrefix[0:hashIdx]
 885        elif len(self.previousDepotPath) == 0:
 886            self.revision = "#head"
 887
 888        if self.globalPrefix.endswith("..."):
 889            self.globalPrefix = self.globalPrefix[:-3]
 890
 891        if not self.globalPrefix.endswith("/"):
 892            self.globalPrefix += "/"
 893
 894        self.getUserMap()
 895        self.getLabels();
 896
 897        if len(self.changeRange) == 0:
 898            try:
 899                sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % self.branch)
 900                output = sout.read()
 901                if output.endswith("\n"):
 902                    output = output[:-1]
 903                tagIdx = output.index(" tags/p4/")
 904                caretIdx = output.find("^")
 905                endPos = len(output)
 906                if caretIdx != -1:
 907                    endPos = caretIdx
 908                self.rev = int(output[tagIdx + 9 : endPos]) + 1
 909                self.changeRange = "@%s,#head" % self.rev
 910                self.initialParent = os.popen("git rev-parse %s" % self.branch).read()[:-1]
 911                self.initialTag = "p4/%s" % (int(self.rev) - 1)
 912            except:
 913                pass
 914
 915        self.tz = - time.timezone / 36
 916        tzsign = ("%s" % self.tz)[0]
 917        if tzsign != '+' and tzsign != '-':
 918            self.tz = "+" + ("%s" % self.tz)
 919
 920        self.gitOutput, self.gitStream, self.gitError = popen2.popen3("git fast-import")
 921
 922        if len(self.revision) > 0:
 923            print "Doing initial import of %s from revision %s" % (self.globalPrefix, self.revision)
 924
 925            details = { "user" : "git perforce import user", "time" : int(time.time()) }
 926            details["desc"] = "Initial import of %s from the state at revision %s" % (self.globalPrefix, self.revision)
 927            details["change"] = self.revision
 928            newestRevision = 0
 929
 930            fileCnt = 0
 931            for info in p4CmdList("files %s...%s" % (self.globalPrefix, self.revision)):
 932                change = int(info["change"])
 933                if change > newestRevision:
 934                    newestRevision = change
 935
 936                if info["action"] == "delete":
 937                    fileCnt = fileCnt + 1
 938                    continue
 939
 940                for prop in [ "depotFile", "rev", "action", "type" ]:
 941                    details["%s%s" % (prop, fileCnt)] = info[prop]
 942
 943                fileCnt = fileCnt + 1
 944
 945            details["change"] = newestRevision
 946
 947            try:
 948                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.globalPrefix)
 949            except IOError:
 950                print self.gitError.read()
 951
 952        else:
 953            changes = []
 954
 955            if len(self.changesFile) > 0:
 956                output = open(self.changesFile).readlines()
 957                changeSet = Set()
 958                for line in output:
 959                    changeSet.add(int(line))
 960
 961                for change in changeSet:
 962                    changes.append(change)
 963
 964                changes.sort()
 965            else:
 966                output = os.popen("p4 changes %s...%s" % (self.globalPrefix, self.changeRange)).readlines()
 967
 968                for line in output:
 969                    changeNum = line.split(" ")[1]
 970                    changes.append(changeNum)
 971
 972                changes.reverse()
 973
 974            if len(changes) == 0:
 975                if not self.silent:
 976                    print "no changes to import!"
 977                sys.exit(1)
 978
 979            cnt = 1
 980            for change in changes:
 981                description = p4Cmd("describe %s" % change)
 982
 983                if not self.silent:
 984                    sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 985                    sys.stdout.flush()
 986                cnt = cnt + 1
 987
 988                try:
 989                    files = self.extractFilesFromCommit(description)
 990                    if self.detectBranches:
 991                        for branch in self.branchesForCommit(files):
 992                            self.knownBranches.add(branch)
 993                            branchPrefix = self.globalPrefix + branch + "/"
 994
 995                            filesForCommit = self.extractFilesInCommitToBranch(files, branchPrefix)
 996
 997                            merged = ""
 998                            parent = ""
 999                            ########### remove cnt!!!
1000                            if branch not in self.createdBranches and cnt > 2:
1001                                self.createdBranches.add(branch)
1002                                parent = self.findBranchParent(branchPrefix, files)
1003                                if parent == branch:
1004                                    parent = ""
1005            #                    elif len(parent) > 0:
1006            #                        print "%s branched off of %s" % (branch, parent)
1007
1008                            if len(parent) == 0:
1009                                merged = self.findBranchSourceHeuristic(filesForCommit, branch, branchPrefix)
1010                                if len(merged) > 0:
1011                                    print "change %s could be a merge from %s into %s" % (description["change"], merged, branch)
1012                                    if not self.changeIsBranchMerge(merged, branch, int(description["change"])):
1013                                        merged = ""
1014
1015                            branch = "refs/heads/" + branch
1016                            if len(parent) > 0:
1017                                parent = "refs/heads/" + parent
1018                            if len(merged) > 0:
1019                                merged = "refs/heads/" + merged
1020                            self.commit(description, files, branch, branchPrefix, parent, merged)
1021                    else:
1022                        self.commit(description, files, self.branch, self.globalPrefix, self.initialParent)
1023                        self.initialParent = ""
1024                except IOError:
1025                    print self.gitError.read()
1026                    sys.exit(1)
1027
1028        if not self.silent:
1029            print ""
1030
1031        if self.tagLastChange:
1032            self.gitStream.write("reset refs/tags/p4/%s\n" % self.lastChange)
1033            self.gitStream.write("from %s\n\n" % self.branch);
1034
1035
1036        self.gitStream.close()
1037        self.gitOutput.close()
1038        self.gitError.close()
1039
1040        os.popen("git repo-config p4.depotpath %s" % self.globalPrefix).read()
1041        if len(self.initialTag) > 0:
1042            os.popen("git tag -d %s" % self.initialTag).read()
1043
1044        return True
1045
1046class P4Rebase(Command):
1047    def __init__(self):
1048        Command.__init__(self)
1049        self.options = [ ]
1050        self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
1051
1052    def run(self, args):
1053        sync = P4Sync()
1054        sync.run([])
1055        print "Rebasing the current branch"
1056        system("git rebase p4")
1057        return True
1058
1059class HelpFormatter(optparse.IndentedHelpFormatter):
1060    def __init__(self):
1061        optparse.IndentedHelpFormatter.__init__(self)
1062
1063    def format_description(self, description):
1064        if description:
1065            return description + "\n"
1066        else:
1067            return ""
1068
1069def printUsage(commands):
1070    print "usage: %s <command> [options]" % sys.argv[0]
1071    print ""
1072    print "valid commands: %s" % ", ".join(commands)
1073    print ""
1074    print "Try %s <command> --help for command specific help." % sys.argv[0]
1075    print ""
1076
1077commands = {
1078    "debug" : P4Debug(),
1079    "clean-tags" : P4CleanTags(),
1080    "submit" : P4Submit(),
1081    "sync" : P4Sync(),
1082    "rebase" : P4Rebase()
1083}
1084
1085if len(sys.argv[1:]) == 0:
1086    printUsage(commands.keys())
1087    sys.exit(2)
1088
1089cmd = ""
1090cmdName = sys.argv[1]
1091try:
1092    cmd = commands[cmdName]
1093except KeyError:
1094    print "unknown command %s" % cmdName
1095    print ""
1096    printUsage(commands.keys())
1097    sys.exit(2)
1098
1099options = cmd.options
1100cmd.gitdir = gitdir
1101
1102args = sys.argv[2:]
1103
1104if len(options) > 0:
1105    options.append(optparse.make_option("--git-dir", dest="gitdir"))
1106
1107    parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1108                                   options,
1109                                   description = cmd.description,
1110                                   formatter = HelpFormatter())
1111
1112    (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1113
1114if cmd.needsGit:
1115    gitdir = cmd.gitdir
1116    if len(gitdir) == 0:
1117        gitdir = ".git"
1118        if not isValidGitDir(gitdir):
1119            cdup = os.popen("git rev-parse --show-cdup").read()[:-1]
1120            if isValidGitDir(cdup + "/" + gitdir):
1121                os.chdir(cdup)
1122
1123    if not isValidGitDir(gitdir):
1124        if isValidGitDir(gitdir + "/.git"):
1125            gitdir += "/.git"
1126        else:
1127            die("fatal: cannot locate git repository at %s" % gitdir)
1128
1129    os.environ["GIT_DIR"] = gitdir
1130
1131if not cmd.run(args):
1132    parser.print_help()
1133