Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit Merge branch 'master' of git://git.kernel.org/pub/scm/gitk/gitk (11bb2d4)
   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 <simon@lst.de>
   6# Copyright: 2007 Simon Hausmann <simon@lst.de>
   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
  13import re
  14
  15from sets import Set;
  16
  17verbose = False
  18
  19def die(msg):
  20    if verbose:
  21        raise Exception(msg)
  22    else:
  23        sys.stderr.write(msg + "\n")
  24        sys.exit(1)
  25
  26def write_pipe(c, str):
  27    if verbose:
  28        sys.stderr.write('Writing pipe: %s\n' % c)
  29
  30    pipe = os.popen(c, 'w')
  31    val = pipe.write(str)
  32    if pipe.close():
  33        die('Command failed: %s' % c)
  34
  35    return val
  36
  37def read_pipe(c, ignore_error=False):
  38    if verbose:
  39        sys.stderr.write('Reading pipe: %s\n' % c)
  40
  41    pipe = os.popen(c, 'rb')
  42    val = pipe.read()
  43    if pipe.close() and not ignore_error:
  44        die('Command failed: %s' % c)
  45
  46    return val
  47
  48
  49def read_pipe_lines(c):
  50    if verbose:
  51        sys.stderr.write('Reading pipe: %s\n' % c)
  52    ## todo: check return status
  53    pipe = os.popen(c, 'rb')
  54    val = pipe.readlines()
  55    if pipe.close():
  56        die('Command failed: %s' % c)
  57
  58    return val
  59
  60def system(cmd):
  61    if verbose:
  62        sys.stderr.write("executing %s\n" % cmd)
  63    if os.system(cmd) != 0:
  64        die("command failed: %s" % cmd)
  65
  66def p4CmdList(cmd, stdin=None, stdin_mode='w+b'):
  67    cmd = "p4 -G %s" % cmd
  68    if verbose:
  69        sys.stderr.write("Opening pipe: %s\n" % cmd)
  70
  71    # Use a temporary file to avoid deadlocks without
  72    # subprocess.communicate(), which would put another copy
  73    # of stdout into memory.
  74    stdin_file = None
  75    if stdin is not None:
  76        stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
  77        stdin_file.write(stdin)
  78        stdin_file.flush()
  79        stdin_file.seek(0)
  80
  81    p4 = subprocess.Popen(cmd, shell=True,
  82                          stdin=stdin_file,
  83                          stdout=subprocess.PIPE)
  84
  85    result = []
  86    try:
  87        while True:
  88            entry = marshal.load(p4.stdout)
  89            result.append(entry)
  90    except EOFError:
  91        pass
  92    exitCode = p4.wait()
  93    if exitCode != 0:
  94        entry = {}
  95        entry["p4ExitCode"] = exitCode
  96        result.append(entry)
  97
  98    return result
  99
 100def p4Cmd(cmd):
 101    list = p4CmdList(cmd)
 102    result = {}
 103    for entry in list:
 104        result.update(entry)
 105    return result;
 106
 107def p4Where(depotPath):
 108    if not depotPath.endswith("/"):
 109        depotPath += "/"
 110    output = p4Cmd("where %s..." % depotPath)
 111    if output["code"] == "error":
 112        return ""
 113    clientPath = ""
 114    if "path" in output:
 115        clientPath = output.get("path")
 116    elif "data" in output:
 117        data = output.get("data")
 118        lastSpace = data.rfind(" ")
 119        clientPath = data[lastSpace + 1:]
 120
 121    if clientPath.endswith("..."):
 122        clientPath = clientPath[:-3]
 123    return clientPath
 124
 125def currentGitBranch():
 126    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 127
 128def isValidGitDir(path):
 129    if (os.path.exists(path + "/HEAD")
 130        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 131        return True;
 132    return False
 133
 134def parseRevision(ref):
 135    return read_pipe("git rev-parse %s" % ref).strip()
 136
 137def extractLogMessageFromGitCommit(commit):
 138    logMessage = ""
 139
 140    ## fixme: title is first line of commit, not 1st paragraph.
 141    foundTitle = False
 142    for log in read_pipe_lines("git cat-file commit %s" % commit):
 143       if not foundTitle:
 144           if len(log) == 1:
 145               foundTitle = True
 146           continue
 147
 148       logMessage += log
 149    return logMessage
 150
 151def extractSettingsGitLog(log):
 152    values = {}
 153    for line in log.split("\n"):
 154        line = line.strip()
 155        m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 156        if not m:
 157            continue
 158
 159        assignments = m.group(1).split (':')
 160        for a in assignments:
 161            vals = a.split ('=')
 162            key = vals[0].strip()
 163            val = ('='.join (vals[1:])).strip()
 164            if val.endswith ('\"') and val.startswith('"'):
 165                val = val[1:-1]
 166
 167            values[key] = val
 168
 169    paths = values.get("depot-paths")
 170    if not paths:
 171        paths = values.get("depot-path")
 172    if paths:
 173        values['depot-paths'] = paths.split(',')
 174    return values
 175
 176def gitBranchExists(branch):
 177    proc = subprocess.Popen(["git", "rev-parse", branch],
 178                            stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 179    return proc.wait() == 0;
 180
 181def gitConfig(key):
 182    return read_pipe("git config %s" % key, ignore_error=True).strip()
 183
 184def p4BranchesInGit(branchesAreInRemotes = True):
 185    branches = {}
 186
 187    cmdline = "git rev-parse --symbolic "
 188    if branchesAreInRemotes:
 189        cmdline += " --remotes"
 190    else:
 191        cmdline += " --branches"
 192
 193    for line in read_pipe_lines(cmdline):
 194        line = line.strip()
 195
 196        ## only import to p4/
 197        if not line.startswith('p4/') or line == "p4/HEAD":
 198            continue
 199        branch = line
 200
 201        # strip off p4
 202        branch = re.sub ("^p4/", "", line)
 203
 204        branches[branch] = parseRevision(line)
 205    return branches
 206
 207def findUpstreamBranchPoint(head = "HEAD"):
 208    branches = p4BranchesInGit()
 209    # map from depot-path to branch name
 210    branchByDepotPath = {}
 211    for branch in branches.keys():
 212        tip = branches[branch]
 213        log = extractLogMessageFromGitCommit(tip)
 214        settings = extractSettingsGitLog(log)
 215        if settings.has_key("depot-paths"):
 216            paths = ",".join(settings["depot-paths"])
 217            branchByDepotPath[paths] = "remotes/p4/" + branch
 218
 219    settings = None
 220    parent = 0
 221    while parent < 65535:
 222        commit = head + "~%s" % parent
 223        log = extractLogMessageFromGitCommit(commit)
 224        settings = extractSettingsGitLog(log)
 225        if settings.has_key("depot-paths"):
 226            paths = ",".join(settings["depot-paths"])
 227            if branchByDepotPath.has_key(paths):
 228                return [branchByDepotPath[paths], settings]
 229
 230        parent = parent + 1
 231
 232    return ["", settings]
 233
 234class Command:
 235    def __init__(self):
 236        self.usage = "usage: %prog [options]"
 237        self.needsGit = True
 238
 239class P4Debug(Command):
 240    def __init__(self):
 241        Command.__init__(self)
 242        self.options = [
 243            optparse.make_option("--verbose", dest="verbose", action="store_true",
 244                                 default=False),
 245            ]
 246        self.description = "A tool to debug the output of p4 -G."
 247        self.needsGit = False
 248        self.verbose = False
 249
 250    def run(self, args):
 251        j = 0
 252        for output in p4CmdList(" ".join(args)):
 253            print 'Element: %d' % j
 254            j += 1
 255            print output
 256        return True
 257
 258class P4RollBack(Command):
 259    def __init__(self):
 260        Command.__init__(self)
 261        self.options = [
 262            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 263            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 264        ]
 265        self.description = "A tool to debug the multi-branch import. Don't use :)"
 266        self.verbose = False
 267        self.rollbackLocalBranches = False
 268
 269    def run(self, args):
 270        if len(args) != 1:
 271            return False
 272        maxChange = int(args[0])
 273
 274        if "p4ExitCode" in p4Cmd("changes -m 1"):
 275            die("Problems executing p4");
 276
 277        if self.rollbackLocalBranches:
 278            refPrefix = "refs/heads/"
 279            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 280        else:
 281            refPrefix = "refs/remotes/"
 282            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 283
 284        for line in lines:
 285            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 286                line = line.strip()
 287                ref = refPrefix + line
 288                log = extractLogMessageFromGitCommit(ref)
 289                settings = extractSettingsGitLog(log)
 290
 291                depotPaths = settings['depot-paths']
 292                change = settings['change']
 293
 294                changed = False
 295
 296                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 297                                                           for p in depotPaths]))) == 0:
 298                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 299                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 300                    continue
 301
 302                while change and int(change) > maxChange:
 303                    changed = True
 304                    if self.verbose:
 305                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 306                    system("git update-ref %s \"%s^\"" % (ref, ref))
 307                    log = extractLogMessageFromGitCommit(ref)
 308                    settings =  extractSettingsGitLog(log)
 309
 310
 311                    depotPaths = settings['depot-paths']
 312                    change = settings['change']
 313
 314                if changed:
 315                    print "%s rewound to %s" % (ref, change)
 316
 317        return True
 318
 319class P4Submit(Command):
 320    def __init__(self):
 321        Command.__init__(self)
 322        self.options = [
 323                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 324                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 325                optparse.make_option("--origin", dest="origin"),
 326                optparse.make_option("--reset", action="store_true", dest="reset"),
 327                optparse.make_option("--log-substitutions", dest="substFile"),
 328                optparse.make_option("--dry-run", action="store_true"),
 329                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 330                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 331        ]
 332        self.description = "Submit changes from git to the perforce depot."
 333        self.usage += " [name of git branch to submit into perforce depot]"
 334        self.firstTime = True
 335        self.reset = False
 336        self.interactive = True
 337        self.dryRun = False
 338        self.substFile = ""
 339        self.firstTime = True
 340        self.origin = ""
 341        self.directSubmit = False
 342        self.trustMeLikeAFool = False
 343        self.verbose = False
 344        self.isWindows = (platform.system() == "Windows")
 345
 346        self.logSubstitutions = {}
 347        self.logSubstitutions["<enter description here>"] = "%log%"
 348        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 349
 350    def check(self):
 351        if len(p4CmdList("opened ...")) > 0:
 352            die("You have files opened with perforce! Close them before starting the sync.")
 353
 354    def start(self):
 355        if len(self.config) > 0 and not self.reset:
 356            die("Cannot start sync. Previous sync config found at %s\n"
 357                "If you want to start submitting again from scratch "
 358                "maybe you want to call git-p4 submit --reset" % self.configFile)
 359
 360        commits = []
 361        if self.directSubmit:
 362            commits.append("0")
 363        else:
 364            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 365                commits.append(line.strip())
 366            commits.reverse()
 367
 368        self.config["commits"] = commits
 369
 370    def prepareLogMessage(self, template, message):
 371        result = ""
 372
 373        for line in template.split("\n"):
 374            if line.startswith("#"):
 375                result += line + "\n"
 376                continue
 377
 378            substituted = False
 379            for key in self.logSubstitutions.keys():
 380                if line.find(key) != -1:
 381                    value = self.logSubstitutions[key]
 382                    value = value.replace("%log%", message)
 383                    if value != "@remove@":
 384                        result += line.replace(key, value) + "\n"
 385                    substituted = True
 386                    break
 387
 388            if not substituted:
 389                result += line + "\n"
 390
 391        return result
 392
 393    def applyCommit(self, id):
 394        if self.directSubmit:
 395            print "Applying local change in working directory/index"
 396            diff = self.diffStatus
 397        else:
 398            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 399            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 400        filesToAdd = set()
 401        filesToDelete = set()
 402        editedFiles = set()
 403        for line in diff:
 404            modifier = line[0]
 405            path = line[1:].strip()
 406            if modifier == "M":
 407                system("p4 edit \"%s\"" % path)
 408                editedFiles.add(path)
 409            elif modifier == "A":
 410                filesToAdd.add(path)
 411                if path in filesToDelete:
 412                    filesToDelete.remove(path)
 413            elif modifier == "D":
 414                filesToDelete.add(path)
 415                if path in filesToAdd:
 416                    filesToAdd.remove(path)
 417            else:
 418                die("unknown modifier %s for %s" % (modifier, path))
 419
 420        if self.directSubmit:
 421            diffcmd = "cat \"%s\"" % self.diffFile
 422        else:
 423            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 424        patchcmd = diffcmd + " | git apply "
 425        tryPatchCmd = patchcmd + "--check -"
 426        applyPatchCmd = patchcmd + "--check --apply -"
 427
 428        if os.system(tryPatchCmd) != 0:
 429            print "Unfortunately applying the change failed!"
 430            print "What do you want to do?"
 431            response = "x"
 432            while response != "s" and response != "a" and response != "w":
 433                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 434                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 435            if response == "s":
 436                print "Skipping! Good luck with the next patches..."
 437                return
 438            elif response == "a":
 439                os.system(applyPatchCmd)
 440                if len(filesToAdd) > 0:
 441                    print "You may also want to call p4 add on the following files:"
 442                    print " ".join(filesToAdd)
 443                if len(filesToDelete):
 444                    print "The following files should be scheduled for deletion with p4 delete:"
 445                    print " ".join(filesToDelete)
 446                die("Please resolve and submit the conflict manually and "
 447                    + "continue afterwards with git-p4 submit --continue")
 448            elif response == "w":
 449                system(diffcmd + " > patch.txt")
 450                print "Patch saved to patch.txt in %s !" % self.clientPath
 451                die("Please resolve and submit the conflict manually and "
 452                    "continue afterwards with git-p4 submit --continue")
 453
 454        system(applyPatchCmd)
 455
 456        for f in filesToAdd:
 457            system("p4 add \"%s\"" % f)
 458        for f in filesToDelete:
 459            system("p4 revert \"%s\"" % f)
 460            system("p4 delete \"%s\"" % f)
 461
 462        logMessage = ""
 463        if not self.directSubmit:
 464            logMessage = extractLogMessageFromGitCommit(id)
 465            logMessage = logMessage.replace("\n", "\n\t")
 466            if self.isWindows:
 467                logMessage = logMessage.replace("\n", "\r\n")
 468            logMessage = logMessage.strip()
 469
 470        template = read_pipe("p4 change -o")
 471
 472        if self.interactive:
 473            submitTemplate = self.prepareLogMessage(template, logMessage)
 474            diff = read_pipe("p4 diff -du ...")
 475
 476            for newFile in filesToAdd:
 477                diff += "==== new file ====\n"
 478                diff += "--- /dev/null\n"
 479                diff += "+++ %s\n" % newFile
 480                f = open(newFile, "r")
 481                for line in f.readlines():
 482                    diff += "+" + line
 483                f.close()
 484
 485            separatorLine = "######## everything below this line is just the diff #######"
 486            if platform.system() == "Windows":
 487                separatorLine += "\r"
 488            separatorLine += "\n"
 489
 490            response = "e"
 491            if self.trustMeLikeAFool:
 492                response = "y"
 493
 494            firstIteration = True
 495            while response == "e":
 496                if not firstIteration:
 497                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 498                firstIteration = False
 499                if response == "e":
 500                    [handle, fileName] = tempfile.mkstemp()
 501                    tmpFile = os.fdopen(handle, "w+")
 502                    tmpFile.write(submitTemplate + separatorLine + diff)
 503                    tmpFile.close()
 504                    defaultEditor = "vi"
 505                    if platform.system() == "Windows":
 506                        defaultEditor = "notepad"
 507                    editor = os.environ.get("EDITOR", defaultEditor);
 508                    system(editor + " " + fileName)
 509                    tmpFile = open(fileName, "rb")
 510                    message = tmpFile.read()
 511                    tmpFile.close()
 512                    os.remove(fileName)
 513                    submitTemplate = message[:message.index(separatorLine)]
 514                    if self.isWindows:
 515                        submitTemplate = submitTemplate.replace("\r\n", "\n")
 516
 517            if response == "y" or response == "yes":
 518               if self.dryRun:
 519                   print submitTemplate
 520                   raw_input("Press return to continue...")
 521               else:
 522                   if self.directSubmit:
 523                       print "Submitting to git first"
 524                       os.chdir(self.oldWorkingDirectory)
 525                       write_pipe("git commit -a -F -", submitTemplate)
 526                       os.chdir(self.clientPath)
 527
 528                   write_pipe("p4 submit -i", submitTemplate)
 529            elif response == "s":
 530                for f in editedFiles:
 531                    system("p4 revert \"%s\"" % f);
 532                for f in filesToAdd:
 533                    system("p4 revert \"%s\"" % f);
 534                    system("rm %s" %f)
 535                for f in filesToDelete:
 536                    system("p4 delete \"%s\"" % f);
 537                return
 538            else:
 539                print "Not submitting!"
 540                self.interactive = False
 541        else:
 542            fileName = "submit.txt"
 543            file = open(fileName, "w+")
 544            file.write(self.prepareLogMessage(template, logMessage))
 545            file.close()
 546            print ("Perforce submit template written as %s. "
 547                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 548                   % (fileName, fileName))
 549
 550    def run(self, args):
 551        if len(args) == 0:
 552            self.master = currentGitBranch()
 553            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 554                die("Detecting current git branch failed!")
 555        elif len(args) == 1:
 556            self.master = args[0]
 557        else:
 558            return False
 559
 560        [upstream, settings] = findUpstreamBranchPoint()
 561        depotPath = settings['depot-paths'][0]
 562        if len(self.origin) == 0:
 563            self.origin = upstream
 564
 565        if self.verbose:
 566            print "Origin branch is " + self.origin
 567
 568        if len(depotPath) == 0:
 569            print "Internal error: cannot locate perforce depot path from existing branches"
 570            sys.exit(128)
 571
 572        self.clientPath = p4Where(depotPath)
 573
 574        if len(self.clientPath) == 0:
 575            print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 576            sys.exit(128)
 577
 578        print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 579        self.oldWorkingDirectory = os.getcwd()
 580
 581        if self.directSubmit:
 582            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 583            if len(self.diffStatus) == 0:
 584                print "No changes in working directory to submit."
 585                return True
 586            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 587            self.diffFile = self.gitdir + "/p4-git-diff"
 588            f = open(self.diffFile, "wb")
 589            f.write(patch)
 590            f.close();
 591
 592        os.chdir(self.clientPath)
 593        response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 594        if response == "y" or response == "yes":
 595            system("p4 sync ...")
 596
 597        if self.reset:
 598            self.firstTime = True
 599
 600        if len(self.substFile) > 0:
 601            for line in open(self.substFile, "r").readlines():
 602                tokens = line.strip().split("=")
 603                self.logSubstitutions[tokens[0]] = tokens[1]
 604
 605        self.check()
 606        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 607        self.config = shelve.open(self.configFile, writeback=True)
 608
 609        if self.firstTime:
 610            self.start()
 611
 612        commits = self.config.get("commits", [])
 613
 614        while len(commits) > 0:
 615            self.firstTime = False
 616            commit = commits[0]
 617            commits = commits[1:]
 618            self.config["commits"] = commits
 619            self.applyCommit(commit)
 620            if not self.interactive:
 621                break
 622
 623        self.config.close()
 624
 625        if self.directSubmit:
 626            os.remove(self.diffFile)
 627
 628        if len(commits) == 0:
 629            if self.firstTime:
 630                print "No changes found to apply between %s and current HEAD" % self.origin
 631            else:
 632                print "All changes applied!"
 633                os.chdir(self.oldWorkingDirectory)
 634                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 635                if response == "y" or response == "yes":
 636                    rebase = P4Rebase()
 637                    rebase.run([])
 638            os.remove(self.configFile)
 639
 640        return True
 641
 642class P4Sync(Command):
 643    def __init__(self):
 644        Command.__init__(self)
 645        self.options = [
 646                optparse.make_option("--branch", dest="branch"),
 647                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 648                optparse.make_option("--changesfile", dest="changesFile"),
 649                optparse.make_option("--silent", dest="silent", action="store_true"),
 650                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 651                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 652                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 653                                     help="Import into refs/heads/ , not refs/remotes"),
 654                optparse.make_option("--max-changes", dest="maxChanges"),
 655                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 656                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 657        ]
 658        self.description = """Imports from Perforce into a git repository.\n
 659    example:
 660    //depot/my/project/ -- to import the current head
 661    //depot/my/project/@all -- to import everything
 662    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 663
 664    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 665
 666        self.usage += " //depot/path[@revRange]"
 667        self.silent = False
 668        self.createdBranches = Set()
 669        self.committedChanges = Set()
 670        self.branch = ""
 671        self.detectBranches = False
 672        self.detectLabels = False
 673        self.changesFile = ""
 674        self.syncWithOrigin = True
 675        self.verbose = False
 676        self.importIntoRemotes = True
 677        self.maxChanges = ""
 678        self.isWindows = (platform.system() == "Windows")
 679        self.keepRepoPath = False
 680        self.depotPaths = None
 681        self.p4BranchesInGit = []
 682
 683        if gitConfig("git-p4.syncFromOrigin") == "false":
 684            self.syncWithOrigin = False
 685
 686    def extractFilesFromCommit(self, commit):
 687        files = []
 688        fnum = 0
 689        while commit.has_key("depotFile%s" % fnum):
 690            path =  commit["depotFile%s" % fnum]
 691
 692            found = [p for p in self.depotPaths
 693                     if path.startswith (p)]
 694            if not found:
 695                fnum = fnum + 1
 696                continue
 697
 698            file = {}
 699            file["path"] = path
 700            file["rev"] = commit["rev%s" % fnum]
 701            file["action"] = commit["action%s" % fnum]
 702            file["type"] = commit["type%s" % fnum]
 703            files.append(file)
 704            fnum = fnum + 1
 705        return files
 706
 707    def stripRepoPath(self, path, prefixes):
 708        if self.keepRepoPath:
 709            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 710
 711        for p in prefixes:
 712            if path.startswith(p):
 713                path = path[len(p):]
 714
 715        return path
 716
 717    def splitFilesIntoBranches(self, commit):
 718        branches = {}
 719        fnum = 0
 720        while commit.has_key("depotFile%s" % fnum):
 721            path =  commit["depotFile%s" % fnum]
 722            found = [p for p in self.depotPaths
 723                     if path.startswith (p)]
 724            if not found:
 725                fnum = fnum + 1
 726                continue
 727
 728            file = {}
 729            file["path"] = path
 730            file["rev"] = commit["rev%s" % fnum]
 731            file["action"] = commit["action%s" % fnum]
 732            file["type"] = commit["type%s" % fnum]
 733            fnum = fnum + 1
 734
 735            relPath = self.stripRepoPath(path, self.depotPaths)
 736
 737            for branch in self.knownBranches.keys():
 738
 739                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 740                if relPath.startswith(branch + "/"):
 741                    if branch not in branches:
 742                        branches[branch] = []
 743                    branches[branch].append(file)
 744                    break
 745
 746        return branches
 747
 748    ## Should move this out, doesn't use SELF.
 749    def readP4Files(self, files):
 750        files = [f for f in files
 751                 if f['action'] != 'delete']
 752
 753        if not files:
 754            return
 755
 756        filedata = p4CmdList('-x - print',
 757                             stdin='\n'.join(['%s#%s' % (f['path'], f['rev'])
 758                                              for f in files]),
 759                             stdin_mode='w+')
 760        if "p4ExitCode" in filedata[0]:
 761            die("Problems executing p4. Error: [%d]."
 762                % (filedata[0]['p4ExitCode']));
 763
 764        j = 0;
 765        contents = {}
 766        while j < len(filedata):
 767            stat = filedata[j]
 768            j += 1
 769            text = ''
 770            while j < len(filedata) and filedata[j]['code'] in ('text',
 771                                                                'binary'):
 772                text += filedata[j]['data']
 773                j += 1
 774
 775
 776            if not stat.has_key('depotFile'):
 777                sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 778                continue
 779
 780            contents[stat['depotFile']] = text
 781
 782        for f in files:
 783            assert not f.has_key('data')
 784            f['data'] = contents[f['path']]
 785
 786    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 787        epoch = details["time"]
 788        author = details["user"]
 789
 790        if self.verbose:
 791            print "commit into %s" % branch
 792
 793        # start with reading files; if that fails, we should not
 794        # create a commit.
 795        new_files = []
 796        for f in files:
 797            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 798                new_files.append (f)
 799            else:
 800                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 801        files = new_files
 802        self.readP4Files(files)
 803
 804
 805
 806
 807        self.gitStream.write("commit %s\n" % branch)
 808#        gitStream.write("mark :%s\n" % details["change"])
 809        self.committedChanges.add(int(details["change"]))
 810        committer = ""
 811        if author not in self.users:
 812            self.getUserMapFromPerforceServer()
 813        if author in self.users:
 814            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 815        else:
 816            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 817
 818        self.gitStream.write("committer %s\n" % committer)
 819
 820        self.gitStream.write("data <<EOT\n")
 821        self.gitStream.write(details["desc"])
 822        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
 823                             % (','.join (branchPrefixes), details["change"]))
 824        if len(details['options']) > 0:
 825            self.gitStream.write(": options = %s" % details['options'])
 826        self.gitStream.write("]\nEOT\n\n")
 827
 828        if len(parent) > 0:
 829            if self.verbose:
 830                print "parent %s" % parent
 831            self.gitStream.write("from %s\n" % parent)
 832
 833        for file in files:
 834            if file["type"] == "apple":
 835                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 836                continue
 837
 838            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 839            if file["action"] == "delete":
 840                self.gitStream.write("D %s\n" % relPath)
 841            else:
 842                mode = 644
 843                if file["type"].startswith("x"):
 844                    mode = 755
 845
 846                data = file['data']
 847
 848                if self.isWindows and file["type"].endswith("text"):
 849                    data = data.replace("\r\n", "\n")
 850
 851                self.gitStream.write("M %d inline %s\n" % (mode, relPath))
 852                self.gitStream.write("data %s\n" % len(data))
 853                self.gitStream.write(data)
 854                self.gitStream.write("\n")
 855
 856        self.gitStream.write("\n")
 857
 858        change = int(details["change"])
 859
 860        if self.labels.has_key(change):
 861            label = self.labels[change]
 862            labelDetails = label[0]
 863            labelRevisions = label[1]
 864            if self.verbose:
 865                print "Change %s is labelled %s" % (change, labelDetails)
 866
 867            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 868                                                    for p in branchPrefixes]))
 869
 870            if len(files) == len(labelRevisions):
 871
 872                cleanedFiles = {}
 873                for info in files:
 874                    if info["action"] == "delete":
 875                        continue
 876                    cleanedFiles[info["depotFile"]] = info["rev"]
 877
 878                if cleanedFiles == labelRevisions:
 879                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 880                    self.gitStream.write("from %s\n" % branch)
 881
 882                    owner = labelDetails["Owner"]
 883                    tagger = ""
 884                    if author in self.users:
 885                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 886                    else:
 887                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 888                    self.gitStream.write("tagger %s\n" % tagger)
 889                    self.gitStream.write("data <<EOT\n")
 890                    self.gitStream.write(labelDetails["Description"])
 891                    self.gitStream.write("EOT\n\n")
 892
 893                else:
 894                    if not self.silent:
 895                        print ("Tag %s does not match with change %s: files do not match."
 896                               % (labelDetails["label"], change))
 897
 898            else:
 899                if not self.silent:
 900                    print ("Tag %s does not match with change %s: file count is different."
 901                           % (labelDetails["label"], change))
 902
 903    def getUserCacheFilename(self):
 904        home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
 905        return home + "/.gitp4-usercache.txt"
 906
 907    def getUserMapFromPerforceServer(self):
 908        if self.userMapFromPerforceServer:
 909            return
 910        self.users = {}
 911
 912        for output in p4CmdList("users"):
 913            if not output.has_key("User"):
 914                continue
 915            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 916
 917
 918        s = ''
 919        for (key, val) in self.users.items():
 920            s += "%s\t%s\n" % (key, val)
 921
 922        open(self.getUserCacheFilename(), "wb").write(s)
 923        self.userMapFromPerforceServer = True
 924
 925    def loadUserMapFromCache(self):
 926        self.users = {}
 927        self.userMapFromPerforceServer = False
 928        try:
 929            cache = open(self.getUserCacheFilename(), "rb")
 930            lines = cache.readlines()
 931            cache.close()
 932            for line in lines:
 933                entry = line.strip().split("\t")
 934                self.users[entry[0]] = entry[1]
 935        except IOError:
 936            self.getUserMapFromPerforceServer()
 937
 938    def getLabels(self):
 939        self.labels = {}
 940
 941        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 942        if len(l) > 0 and not self.silent:
 943            print "Finding files belonging to labels in %s" % `self.depotPath`
 944
 945        for output in l:
 946            label = output["label"]
 947            revisions = {}
 948            newestChange = 0
 949            if self.verbose:
 950                print "Querying files for label %s" % label
 951            for file in p4CmdList("files "
 952                                  +  ' '.join (["%s...@%s" % (p, label)
 953                                                for p in self.depotPaths])):
 954                revisions[file["depotFile"]] = file["rev"]
 955                change = int(file["change"])
 956                if change > newestChange:
 957                    newestChange = change
 958
 959            self.labels[newestChange] = [output, revisions]
 960
 961        if self.verbose:
 962            print "Label changes: %s" % self.labels.keys()
 963
 964    def guessProjectName(self):
 965        for p in self.depotPaths:
 966            if p.endswith("/"):
 967                p = p[:-1]
 968            p = p[p.strip().rfind("/") + 1:]
 969            if not p.endswith("/"):
 970               p += "/"
 971            return p
 972
 973    def getBranchMapping(self):
 974        lostAndFoundBranches = set()
 975
 976        for info in p4CmdList("branches"):
 977            details = p4Cmd("branch -o %s" % info["branch"])
 978            viewIdx = 0
 979            while details.has_key("View%s" % viewIdx):
 980                paths = details["View%s" % viewIdx].split(" ")
 981                viewIdx = viewIdx + 1
 982                # require standard //depot/foo/... //depot/bar/... mapping
 983                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 984                    continue
 985                source = paths[0]
 986                destination = paths[1]
 987                ## HACK
 988                if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
 989                    source = source[len(self.depotPaths[0]):-4]
 990                    destination = destination[len(self.depotPaths[0]):-4]
 991
 992                    if destination in self.knownBranches:
 993                        if not self.silent:
 994                            print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
 995                            print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
 996                        continue
 997
 998                    self.knownBranches[destination] = source
 999
1000                    lostAndFoundBranches.discard(destination)
1001
1002                    if source not in self.knownBranches:
1003                        lostAndFoundBranches.add(source)
1004
1005
1006        for branch in lostAndFoundBranches:
1007            self.knownBranches[branch] = branch
1008
1009    def listExistingP4GitBranches(self):
1010        # branches holds mapping from name to commit
1011        branches = p4BranchesInGit(self.importIntoRemotes)
1012        self.p4BranchesInGit = branches.keys()
1013        for branch in branches.keys():
1014            self.initialParents[self.refPrefix + branch] = branches[branch]
1015
1016    def createOrUpdateBranchesFromOrigin(self):
1017        if not self.silent:
1018            print ("Creating/updating branch(es) in %s based on origin branch(es)"
1019                   % self.refPrefix)
1020
1021        originPrefix = "origin/p4/"
1022
1023        for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
1024            line = line.strip()
1025            if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
1026                continue
1027
1028            headName = line[len(originPrefix):]
1029            remoteHead = self.refPrefix + headName
1030            originHead = line
1031
1032            original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
1033            if (not original.has_key('depot-paths')
1034                or not original.has_key('change')):
1035                continue
1036
1037            update = False
1038            if not gitBranchExists(remoteHead):
1039                if self.verbose:
1040                    print "creating %s" % remoteHead
1041                update = True
1042            else:
1043                settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
1044                if settings.has_key('change') > 0:
1045                    if settings['depot-paths'] == original['depot-paths']:
1046                        originP4Change = int(original['change'])
1047                        p4Change = int(settings['change'])
1048                        if originP4Change > p4Change:
1049                            print ("%s (%s) is newer than %s (%s). "
1050                                   "Updating p4 branch from origin."
1051                                   % (originHead, originP4Change,
1052                                      remoteHead, p4Change))
1053                            update = True
1054                    else:
1055                        print ("Ignoring: %s was imported from %s while "
1056                               "%s was imported from %s"
1057                               % (originHead, ','.join(original['depot-paths']),
1058                                  remoteHead, ','.join(settings['depot-paths'])))
1059
1060            if update:
1061                system("git update-ref %s %s" % (remoteHead, originHead))
1062
1063    def updateOptionDict(self, d):
1064        option_keys = {}
1065        if self.keepRepoPath:
1066            option_keys['keepRepoPath'] = 1
1067
1068        d["options"] = ' '.join(sorted(option_keys.keys()))
1069
1070    def readOptions(self, d):
1071        self.keepRepoPath = (d.has_key('options')
1072                             and ('keepRepoPath' in d['options']))
1073
1074    def run(self, args):
1075        self.depotPaths = []
1076        self.changeRange = ""
1077        self.initialParent = ""
1078        self.previousDepotPaths = []
1079
1080        # map from branch depot path to parent branch
1081        self.knownBranches = {}
1082        self.initialParents = {}
1083        self.hasOrigin = gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
1084        if not self.syncWithOrigin:
1085            self.hasOrigin = False
1086
1087        if self.importIntoRemotes:
1088            self.refPrefix = "refs/remotes/p4/"
1089        else:
1090            self.refPrefix = "refs/heads/p4/"
1091
1092        if self.syncWithOrigin and self.hasOrigin:
1093            if not self.silent:
1094                print "Syncing with origin first by calling git fetch origin"
1095            system("git fetch origin")
1096
1097        if len(self.branch) == 0:
1098            self.branch = self.refPrefix + "master"
1099            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1100                system("git update-ref %s refs/heads/p4" % self.branch)
1101                system("git branch -D p4");
1102            # create it /after/ importing, when master exists
1103            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1104                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1105
1106        # TODO: should always look at previous commits,
1107        # merge with previous imports, if possible.
1108        if args == []:
1109            if self.hasOrigin:
1110                self.createOrUpdateBranchesFromOrigin()
1111            self.listExistingP4GitBranches()
1112
1113            if len(self.p4BranchesInGit) > 1:
1114                if not self.silent:
1115                    print "Importing from/into multiple branches"
1116                self.detectBranches = True
1117
1118            if self.verbose:
1119                print "branches: %s" % self.p4BranchesInGit
1120
1121            p4Change = 0
1122            for branch in self.p4BranchesInGit:
1123                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1124
1125                settings = extractSettingsGitLog(logMsg)
1126
1127                self.readOptions(settings)
1128                if (settings.has_key('depot-paths')
1129                    and settings.has_key ('change')):
1130                    change = int(settings['change']) + 1
1131                    p4Change = max(p4Change, change)
1132
1133                    depotPaths = sorted(settings['depot-paths'])
1134                    if self.previousDepotPaths == []:
1135                        self.previousDepotPaths = depotPaths
1136                    else:
1137                        paths = []
1138                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1139                            for i in range(0, min(len(cur), len(prev))):
1140                                if cur[i] <> prev[i]:
1141                                    i = i - 1
1142                                    break
1143
1144                            paths.append (cur[:i + 1])
1145
1146                        self.previousDepotPaths = paths
1147
1148            if p4Change > 0:
1149                self.depotPaths = sorted(self.previousDepotPaths)
1150                self.changeRange = "@%s,#head" % p4Change
1151                if not self.detectBranches:
1152                    self.initialParent = parseRevision(self.branch)
1153                if not self.silent and not self.detectBranches:
1154                    print "Performing incremental import into %s git branch" % self.branch
1155
1156        if not self.branch.startswith("refs/"):
1157            self.branch = "refs/heads/" + self.branch
1158
1159        if len(args) == 0 and self.depotPaths:
1160            if not self.silent:
1161                print "Depot paths: %s" % ' '.join(self.depotPaths)
1162        else:
1163            if self.depotPaths and self.depotPaths != args:
1164                print ("previous import used depot path %s and now %s was specified. "
1165                       "This doesn't work!" % (' '.join (self.depotPaths),
1166                                               ' '.join (args)))
1167                sys.exit(1)
1168
1169            self.depotPaths = sorted(args)
1170
1171        self.revision = ""
1172        self.users = {}
1173
1174        newPaths = []
1175        for p in self.depotPaths:
1176            if p.find("@") != -1:
1177                atIdx = p.index("@")
1178                self.changeRange = p[atIdx:]
1179                if self.changeRange == "@all":
1180                    self.changeRange = ""
1181                elif ',' not in self.changeRange:
1182                    self.revision = self.changeRange
1183                    self.changeRange = ""
1184                p = p[0:atIdx]
1185            elif p.find("#") != -1:
1186                hashIdx = p.index("#")
1187                self.revision = p[hashIdx:]
1188                p = p[0:hashIdx]
1189            elif self.previousDepotPaths == []:
1190                self.revision = "#head"
1191
1192            p = re.sub ("\.\.\.$", "", p)
1193            if not p.endswith("/"):
1194                p += "/"
1195
1196            newPaths.append(p)
1197
1198        self.depotPaths = newPaths
1199
1200
1201        self.loadUserMapFromCache()
1202        self.labels = {}
1203        if self.detectLabels:
1204            self.getLabels();
1205
1206        if self.detectBranches:
1207            ## FIXME - what's a P4 projectName ?
1208            self.projectName = self.guessProjectName()
1209
1210            if not self.hasOrigin:
1211                self.getBranchMapping();
1212            if self.verbose:
1213                print "p4-git branches: %s" % self.p4BranchesInGit
1214                print "initial parents: %s" % self.initialParents
1215            for b in self.p4BranchesInGit:
1216                if b != "master":
1217
1218                    ## FIXME
1219                    b = b[len(self.projectName):]
1220                self.createdBranches.add(b)
1221
1222        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1223
1224        importProcess = subprocess.Popen(["git", "fast-import"],
1225                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1226                                         stderr=subprocess.PIPE);
1227        self.gitOutput = importProcess.stdout
1228        self.gitStream = importProcess.stdin
1229        self.gitError = importProcess.stderr
1230
1231        if self.revision:
1232            print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
1233
1234            details = { "user" : "git perforce import user", "time" : int(time.time()) }
1235            details["desc"] = ("Initial import of %s from the state at revision %s"
1236                               % (' '.join(self.depotPaths), self.revision))
1237            details["change"] = self.revision
1238            newestRevision = 0
1239
1240            fileCnt = 0
1241            for info in p4CmdList("files "
1242                                  +  ' '.join(["%s...%s"
1243                                               % (p, self.revision)
1244                                               for p in self.depotPaths])):
1245
1246                if info['code'] == 'error':
1247                    sys.stderr.write("p4 returned an error: %s\n"
1248                                     % info['data'])
1249                    sys.exit(1)
1250
1251
1252                change = int(info["change"])
1253                if change > newestRevision:
1254                    newestRevision = change
1255
1256                if info["action"] == "delete":
1257                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1258                    #fileCnt = fileCnt + 1
1259                    continue
1260
1261                for prop in ["depotFile", "rev", "action", "type" ]:
1262                    details["%s%s" % (prop, fileCnt)] = info[prop]
1263
1264                fileCnt = fileCnt + 1
1265
1266            details["change"] = newestRevision
1267            self.updateOptionDict(details)
1268            try:
1269                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1270            except IOError:
1271                print "IO error with git fast-import. Is your git version recent enough?"
1272                print self.gitError.read()
1273
1274        else:
1275            changes = []
1276
1277            if len(self.changesFile) > 0:
1278                output = open(self.changesFile).readlines()
1279                changeSet = Set()
1280                for line in output:
1281                    changeSet.add(int(line))
1282
1283                for change in changeSet:
1284                    changes.append(change)
1285
1286                changes.sort()
1287            else:
1288                if self.verbose:
1289                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1290                                                              self.changeRange)
1291                assert self.depotPaths
1292                output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1293                                                                    for p in self.depotPaths]))
1294
1295                for line in output:
1296                    changeNum = line.split(" ")[1]
1297                    changes.append(changeNum)
1298
1299                changes.reverse()
1300
1301                if len(self.maxChanges) > 0:
1302                    changes = changes[0:min(int(self.maxChanges), len(changes))]
1303
1304            if len(changes) == 0:
1305                if not self.silent:
1306                    print "No changes to import!"
1307                return True
1308
1309            if not self.silent and not self.detectBranches:
1310                print "Import destination: %s" % self.branch
1311
1312            self.updatedBranches = set()
1313
1314            cnt = 1
1315            for change in changes:
1316                description = p4Cmd("describe %s" % change)
1317                self.updateOptionDict(description)
1318
1319                if not self.silent:
1320                    sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1321                    sys.stdout.flush()
1322                cnt = cnt + 1
1323
1324                try:
1325                    if self.detectBranches:
1326                        branches = self.splitFilesIntoBranches(description)
1327                        for branch in branches.keys():
1328                            ## HACK  --hwn
1329                            branchPrefix = self.depotPaths[0] + branch + "/"
1330
1331                            parent = ""
1332
1333                            filesForCommit = branches[branch]
1334
1335                            if self.verbose:
1336                                print "branch is %s" % branch
1337
1338                            self.updatedBranches.add(branch)
1339
1340                            if branch not in self.createdBranches:
1341                                self.createdBranches.add(branch)
1342                                parent = self.knownBranches[branch]
1343                                if parent == branch:
1344                                    parent = ""
1345                                elif self.verbose:
1346                                    print "parent determined through known branches: %s" % parent
1347
1348                            # main branch? use master
1349                            if branch == "main":
1350                                branch = "master"
1351                            else:
1352
1353                                ## FIXME
1354                                branch = self.projectName + branch
1355
1356                            if parent == "main":
1357                                parent = "master"
1358                            elif len(parent) > 0:
1359                                ## FIXME
1360                                parent = self.projectName + parent
1361
1362                            branch = self.refPrefix + branch
1363                            if len(parent) > 0:
1364                                parent = self.refPrefix + parent
1365
1366                            if self.verbose:
1367                                print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1368
1369                            if len(parent) == 0 and branch in self.initialParents:
1370                                parent = self.initialParents[branch]
1371                                del self.initialParents[branch]
1372
1373                            self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1374                    else:
1375                        files = self.extractFilesFromCommit(description)
1376                        self.commit(description, files, self.branch, self.depotPaths,
1377                                    self.initialParent)
1378                        self.initialParent = ""
1379                except IOError:
1380                    print self.gitError.read()
1381                    sys.exit(1)
1382
1383            if not self.silent:
1384                print ""
1385                if len(self.updatedBranches) > 0:
1386                    sys.stdout.write("Updated branches: ")
1387                    for b in self.updatedBranches:
1388                        sys.stdout.write("%s " % b)
1389                    sys.stdout.write("\n")
1390
1391
1392        self.gitStream.close()
1393        if importProcess.wait() != 0:
1394            die("fast-import failed: %s" % self.gitError.read())
1395        self.gitOutput.close()
1396        self.gitError.close()
1397
1398        return True
1399
1400class P4Rebase(Command):
1401    def __init__(self):
1402        Command.__init__(self)
1403        self.options = [ ]
1404        self.description = ("Fetches the latest revision from perforce and "
1405                            + "rebases the current work (branch) against it")
1406        self.verbose = False
1407
1408    def run(self, args):
1409        sync = P4Sync()
1410        sync.run([])
1411
1412        [upstream, settings] = findUpstreamBranchPoint()
1413        if len(upstream) == 0:
1414            die("Cannot find upstream branchpoint for rebase")
1415
1416        # the branchpoint may be p4/foo~3, so strip off the parent
1417        upstream = re.sub("~[0-9]+$", "", upstream)
1418
1419        print "Rebasing the current branch onto %s" % upstream
1420        oldHead = read_pipe("git rev-parse HEAD").strip()
1421        system("git rebase %s" % upstream)
1422        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1423        return True
1424
1425class P4Clone(P4Sync):
1426    def __init__(self):
1427        P4Sync.__init__(self)
1428        self.description = "Creates a new git repository and imports from Perforce into it"
1429        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1430        self.options.append(
1431            optparse.make_option("--destination", dest="cloneDestination",
1432                                 action='store', default=None,
1433                                 help="where to leave result of the clone"))
1434        self.cloneDestination = None
1435        self.needsGit = False
1436
1437    def defaultDestination(self, args):
1438        ## TODO: use common prefix of args?
1439        depotPath = args[0]
1440        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1441        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1442        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1443        depotDir = re.sub(r"/$", "", depotDir)
1444        return os.path.split(depotDir)[1]
1445
1446    def run(self, args):
1447        if len(args) < 1:
1448            return False
1449
1450        if self.keepRepoPath and not self.cloneDestination:
1451            sys.stderr.write("Must specify destination for --keep-path\n")
1452            sys.exit(1)
1453
1454        depotPaths = args
1455
1456        if not self.cloneDestination and len(depotPaths) > 1:
1457            self.cloneDestination = depotPaths[-1]
1458            depotPaths = depotPaths[:-1]
1459
1460        for p in depotPaths:
1461            if not p.startswith("//"):
1462                return False
1463
1464        if not self.cloneDestination:
1465            self.cloneDestination = self.defaultDestination(args)
1466
1467        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1468        if not os.path.exists(self.cloneDestination):
1469            os.makedirs(self.cloneDestination)
1470        os.chdir(self.cloneDestination)
1471        system("git init")
1472        self.gitdir = os.getcwd() + "/.git"
1473        if not P4Sync.run(self, depotPaths):
1474            return False
1475        if self.branch != "master":
1476            if gitBranchExists("refs/remotes/p4/master"):
1477                system("git branch master refs/remotes/p4/master")
1478                system("git checkout -f")
1479            else:
1480                print "Could not detect main branch. No checkout/master branch created."
1481
1482        return True
1483
1484class P4Branches(Command):
1485    def __init__(self):
1486        Command.__init__(self)
1487        self.options = [ ]
1488        self.description = ("Shows the git branches that hold imports and their "
1489                            + "corresponding perforce depot paths")
1490        self.verbose = False
1491
1492    def run(self, args):
1493        cmdline = "git rev-parse --symbolic "
1494        cmdline += " --remotes"
1495
1496        for line in read_pipe_lines(cmdline):
1497            line = line.strip()
1498
1499            if not line.startswith('p4/') or line == "p4/HEAD":
1500                continue
1501            branch = line
1502
1503            log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1504            settings = extractSettingsGitLog(log)
1505
1506            print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1507        return True
1508
1509class HelpFormatter(optparse.IndentedHelpFormatter):
1510    def __init__(self):
1511        optparse.IndentedHelpFormatter.__init__(self)
1512
1513    def format_description(self, description):
1514        if description:
1515            return description + "\n"
1516        else:
1517            return ""
1518
1519def printUsage(commands):
1520    print "usage: %s <command> [options]" % sys.argv[0]
1521    print ""
1522    print "valid commands: %s" % ", ".join(commands)
1523    print ""
1524    print "Try %s <command> --help for command specific help." % sys.argv[0]
1525    print ""
1526
1527commands = {
1528    "debug" : P4Debug,
1529    "submit" : P4Submit,
1530    "sync" : P4Sync,
1531    "rebase" : P4Rebase,
1532    "clone" : P4Clone,
1533    "rollback" : P4RollBack,
1534    "branches" : P4Branches
1535}
1536
1537
1538def main():
1539    if len(sys.argv[1:]) == 0:
1540        printUsage(commands.keys())
1541        sys.exit(2)
1542
1543    cmd = ""
1544    cmdName = sys.argv[1]
1545    try:
1546        klass = commands[cmdName]
1547        cmd = klass()
1548    except KeyError:
1549        print "unknown command %s" % cmdName
1550        print ""
1551        printUsage(commands.keys())
1552        sys.exit(2)
1553
1554    options = cmd.options
1555    cmd.gitdir = os.environ.get("GIT_DIR", None)
1556
1557    args = sys.argv[2:]
1558
1559    if len(options) > 0:
1560        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1561
1562        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1563                                       options,
1564                                       description = cmd.description,
1565                                       formatter = HelpFormatter())
1566
1567        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1568    global verbose
1569    verbose = cmd.verbose
1570    if cmd.needsGit:
1571        if cmd.gitdir == None:
1572            cmd.gitdir = os.path.abspath(".git")
1573            if not isValidGitDir(cmd.gitdir):
1574                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1575                if os.path.exists(cmd.gitdir):
1576                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1577                    if len(cdup) > 0:
1578                        os.chdir(cdup);
1579
1580        if not isValidGitDir(cmd.gitdir):
1581            if isValidGitDir(cmd.gitdir + "/.git"):
1582                cmd.gitdir += "/.git"
1583            else:
1584                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1585
1586        os.environ["GIT_DIR"] = cmd.gitdir
1587
1588    if not cmd.run(args):
1589        parser.print_help()
1590
1591
1592if __name__ == '__main__':
1593    main()