Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit Fix git-p4 on Windows to not use the Posix sysconf function. (48b4c3d)
   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):
  67    cmd = "p4 -G %s" % cmd
  68    if verbose:
  69        sys.stderr.write("Opening pipe: %s\n" % cmd)
  70    pipe = os.popen(cmd, "rb")
  71
  72    result = []
  73    try:
  74        while True:
  75            entry = marshal.load(pipe)
  76            result.append(entry)
  77    except EOFError:
  78        pass
  79    exitCode = pipe.close()
  80    if exitCode != None:
  81        entry = {}
  82        entry["p4ExitCode"] = exitCode
  83        result.append(entry)
  84
  85    return result
  86
  87def p4Cmd(cmd):
  88    list = p4CmdList(cmd)
  89    result = {}
  90    for entry in list:
  91        result.update(entry)
  92    return result;
  93
  94def p4Where(depotPath):
  95    if not depotPath.endswith("/"):
  96        depotPath += "/"
  97    output = p4Cmd("where %s..." % depotPath)
  98    if output["code"] == "error":
  99        return ""
 100    clientPath = ""
 101    if "path" in output:
 102        clientPath = output.get("path")
 103    elif "data" in output:
 104        data = output.get("data")
 105        lastSpace = data.rfind(" ")
 106        clientPath = data[lastSpace + 1:]
 107
 108    if clientPath.endswith("..."):
 109        clientPath = clientPath[:-3]
 110    return clientPath
 111
 112def currentGitBranch():
 113    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 114
 115def isValidGitDir(path):
 116    if (os.path.exists(path + "/HEAD")
 117        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 118        return True;
 119    return False
 120
 121def parseRevision(ref):
 122    return read_pipe("git rev-parse %s" % ref).strip()
 123
 124def extractLogMessageFromGitCommit(commit):
 125    logMessage = ""
 126
 127    ## fixme: title is first line of commit, not 1st paragraph.
 128    foundTitle = False
 129    for log in read_pipe_lines("git cat-file commit %s" % commit):
 130       if not foundTitle:
 131           if len(log) == 1:
 132               foundTitle = True
 133           continue
 134
 135       logMessage += log
 136    return logMessage
 137
 138def extractSettingsGitLog(log):
 139    values = {}
 140    for line in log.split("\n"):
 141        line = line.strip()
 142        m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 143        if not m:
 144            continue
 145
 146        assignments = m.group(1).split (':')
 147        for a in assignments:
 148            vals = a.split ('=')
 149            key = vals[0].strip()
 150            val = ('='.join (vals[1:])).strip()
 151            if val.endswith ('\"') and val.startswith('"'):
 152                val = val[1:-1]
 153
 154            values[key] = val
 155
 156    paths = values.get("depot-paths")
 157    if not paths:
 158        paths = values.get("depot-path")
 159    if paths:
 160        values['depot-paths'] = paths.split(',')
 161    return values
 162
 163def gitBranchExists(branch):
 164    proc = subprocess.Popen(["git", "rev-parse", branch],
 165                            stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 166    return proc.wait() == 0;
 167
 168def gitConfig(key):
 169    return read_pipe("git config %s" % key, ignore_error=True).strip()
 170
 171def findUpstreamBranchPoint(head = "HEAD"):
 172    settings = None
 173    branchPoint = ""
 174    parent = 0
 175    while parent < 65535:
 176        commit = head + "~%s" % parent
 177        log = extractLogMessageFromGitCommit(commit)
 178        settings = extractSettingsGitLog(log)
 179        if not settings.has_key("depot-paths"):
 180            parent = parent + 1
 181            continue
 182
 183        names = read_pipe_lines("git name-rev \"--refs=refs/remotes/p4/*\" \"%s\"" % commit)
 184        if len(names) <= 0:
 185            continue
 186
 187        # strip away the beginning of 'HEAD~42 refs/remotes/p4/foo'
 188        branchPoint = names[0].strip()[len(commit) + 1:]
 189        break
 190
 191    return [branchPoint, settings]
 192
 193class Command:
 194    def __init__(self):
 195        self.usage = "usage: %prog [options]"
 196        self.needsGit = True
 197
 198class P4Debug(Command):
 199    def __init__(self):
 200        Command.__init__(self)
 201        self.options = [
 202            optparse.make_option("--verbose", dest="verbose", action="store_true",
 203                                 default=False),
 204            ]
 205        self.description = "A tool to debug the output of p4 -G."
 206        self.needsGit = False
 207        self.verbose = False
 208
 209    def run(self, args):
 210        j = 0
 211        for output in p4CmdList(" ".join(args)):
 212            print 'Element: %d' % j
 213            j += 1
 214            print output
 215        return True
 216
 217class P4RollBack(Command):
 218    def __init__(self):
 219        Command.__init__(self)
 220        self.options = [
 221            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 222            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 223        ]
 224        self.description = "A tool to debug the multi-branch import. Don't use :)"
 225        self.verbose = False
 226        self.rollbackLocalBranches = False
 227
 228    def run(self, args):
 229        if len(args) != 1:
 230            return False
 231        maxChange = int(args[0])
 232
 233        if "p4ExitCode" in p4Cmd("changes -m 1"):
 234            die("Problems executing p4");
 235
 236        if self.rollbackLocalBranches:
 237            refPrefix = "refs/heads/"
 238            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 239        else:
 240            refPrefix = "refs/remotes/"
 241            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 242
 243        for line in lines:
 244            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 245                line = line.strip()
 246                ref = refPrefix + line
 247                log = extractLogMessageFromGitCommit(ref)
 248                settings = extractSettingsGitLog(log)
 249
 250                depotPaths = settings['depot-paths']
 251                change = settings['change']
 252
 253                changed = False
 254
 255                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 256                                                           for p in depotPaths]))) == 0:
 257                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 258                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 259                    continue
 260
 261                while change and int(change) > maxChange:
 262                    changed = True
 263                    if self.verbose:
 264                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 265                    system("git update-ref %s \"%s^\"" % (ref, ref))
 266                    log = extractLogMessageFromGitCommit(ref)
 267                    settings =  extractSettingsGitLog(log)
 268
 269
 270                    depotPaths = settings['depot-paths']
 271                    change = settings['change']
 272
 273                if changed:
 274                    print "%s rewound to %s" % (ref, change)
 275
 276        return True
 277
 278class P4Submit(Command):
 279    def __init__(self):
 280        Command.__init__(self)
 281        self.options = [
 282                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 283                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 284                optparse.make_option("--origin", dest="origin"),
 285                optparse.make_option("--reset", action="store_true", dest="reset"),
 286                optparse.make_option("--log-substitutions", dest="substFile"),
 287                optparse.make_option("--dry-run", action="store_true"),
 288                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 289                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 290        ]
 291        self.description = "Submit changes from git to the perforce depot."
 292        self.usage += " [name of git branch to submit into perforce depot]"
 293        self.firstTime = True
 294        self.reset = False
 295        self.interactive = True
 296        self.dryRun = False
 297        self.substFile = ""
 298        self.firstTime = True
 299        self.origin = ""
 300        self.directSubmit = False
 301        self.trustMeLikeAFool = False
 302        self.verbose = False
 303        self.isWindows = (platform.system() == "Windows")
 304
 305        self.logSubstitutions = {}
 306        self.logSubstitutions["<enter description here>"] = "%log%"
 307        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 308
 309    def check(self):
 310        if len(p4CmdList("opened ...")) > 0:
 311            die("You have files opened with perforce! Close them before starting the sync.")
 312
 313    def start(self):
 314        if len(self.config) > 0 and not self.reset:
 315            die("Cannot start sync. Previous sync config found at %s\n"
 316                "If you want to start submitting again from scratch "
 317                "maybe you want to call git-p4 submit --reset" % self.configFile)
 318
 319        commits = []
 320        if self.directSubmit:
 321            commits.append("0")
 322        else:
 323            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 324                commits.append(line.strip())
 325            commits.reverse()
 326
 327        self.config["commits"] = commits
 328
 329    def prepareLogMessage(self, template, message):
 330        result = ""
 331
 332        for line in template.split("\n"):
 333            if line.startswith("#"):
 334                result += line + "\n"
 335                continue
 336
 337            substituted = False
 338            for key in self.logSubstitutions.keys():
 339                if line.find(key) != -1:
 340                    value = self.logSubstitutions[key]
 341                    value = value.replace("%log%", message)
 342                    if value != "@remove@":
 343                        result += line.replace(key, value) + "\n"
 344                    substituted = True
 345                    break
 346
 347            if not substituted:
 348                result += line + "\n"
 349
 350        return result
 351
 352    def applyCommit(self, id):
 353        if self.directSubmit:
 354            print "Applying local change in working directory/index"
 355            diff = self.diffStatus
 356        else:
 357            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 358            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 359        filesToAdd = set()
 360        filesToDelete = set()
 361        editedFiles = set()
 362        for line in diff:
 363            modifier = line[0]
 364            path = line[1:].strip()
 365            if modifier == "M":
 366                system("p4 edit \"%s\"" % path)
 367                editedFiles.add(path)
 368            elif modifier == "A":
 369                filesToAdd.add(path)
 370                if path in filesToDelete:
 371                    filesToDelete.remove(path)
 372            elif modifier == "D":
 373                filesToDelete.add(path)
 374                if path in filesToAdd:
 375                    filesToAdd.remove(path)
 376            else:
 377                die("unknown modifier %s for %s" % (modifier, path))
 378
 379        if self.directSubmit:
 380            diffcmd = "cat \"%s\"" % self.diffFile
 381        else:
 382            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 383        patchcmd = diffcmd + " | git apply "
 384        tryPatchCmd = patchcmd + "--check -"
 385        applyPatchCmd = patchcmd + "--check --apply -"
 386
 387        if os.system(tryPatchCmd) != 0:
 388            print "Unfortunately applying the change failed!"
 389            print "What do you want to do?"
 390            response = "x"
 391            while response != "s" and response != "a" and response != "w":
 392                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 393                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 394            if response == "s":
 395                print "Skipping! Good luck with the next patches..."
 396                return
 397            elif response == "a":
 398                os.system(applyPatchCmd)
 399                if len(filesToAdd) > 0:
 400                    print "You may also want to call p4 add on the following files:"
 401                    print " ".join(filesToAdd)
 402                if len(filesToDelete):
 403                    print "The following files should be scheduled for deletion with p4 delete:"
 404                    print " ".join(filesToDelete)
 405                die("Please resolve and submit the conflict manually and "
 406                    + "continue afterwards with git-p4 submit --continue")
 407            elif response == "w":
 408                system(diffcmd + " > patch.txt")
 409                print "Patch saved to patch.txt in %s !" % self.clientPath
 410                die("Please resolve and submit the conflict manually and "
 411                    "continue afterwards with git-p4 submit --continue")
 412
 413        system(applyPatchCmd)
 414
 415        for f in filesToAdd:
 416            system("p4 add \"%s\"" % f)
 417        for f in filesToDelete:
 418            system("p4 revert \"%s\"" % f)
 419            system("p4 delete \"%s\"" % f)
 420
 421        logMessage = ""
 422        if not self.directSubmit:
 423            logMessage = extractLogMessageFromGitCommit(id)
 424            logMessage = logMessage.replace("\n", "\n\t")
 425            if self.isWindows:
 426                logMessage = logMessage.replace("\n", "\r\n")
 427            logMessage = logMessage.strip()
 428
 429        template = read_pipe("p4 change -o")
 430
 431        if self.interactive:
 432            submitTemplate = self.prepareLogMessage(template, logMessage)
 433            diff = read_pipe("p4 diff -du ...")
 434
 435            for newFile in filesToAdd:
 436                diff += "==== new file ====\n"
 437                diff += "--- /dev/null\n"
 438                diff += "+++ %s\n" % newFile
 439                f = open(newFile, "r")
 440                for line in f.readlines():
 441                    diff += "+" + line
 442                f.close()
 443
 444            separatorLine = "######## everything below this line is just the diff #######"
 445            if platform.system() == "Windows":
 446                separatorLine += "\r"
 447            separatorLine += "\n"
 448
 449            response = "e"
 450            if self.trustMeLikeAFool:
 451                response = "y"
 452
 453            firstIteration = True
 454            while response == "e":
 455                if not firstIteration:
 456                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 457                firstIteration = False
 458                if response == "e":
 459                    [handle, fileName] = tempfile.mkstemp()
 460                    tmpFile = os.fdopen(handle, "w+")
 461                    tmpFile.write(submitTemplate + separatorLine + diff)
 462                    tmpFile.close()
 463                    defaultEditor = "vi"
 464                    if platform.system() == "Windows":
 465                        defaultEditor = "notepad"
 466                    editor = os.environ.get("EDITOR", defaultEditor);
 467                    system(editor + " " + fileName)
 468                    tmpFile = open(fileName, "rb")
 469                    message = tmpFile.read()
 470                    tmpFile.close()
 471                    os.remove(fileName)
 472                    submitTemplate = message[:message.index(separatorLine)]
 473                    if self.isWindows:
 474                        submitTemplate = submitTemplate.replace("\r\n", "\n")
 475
 476            if response == "y" or response == "yes":
 477               if self.dryRun:
 478                   print submitTemplate
 479                   raw_input("Press return to continue...")
 480               else:
 481                   if self.directSubmit:
 482                       print "Submitting to git first"
 483                       os.chdir(self.oldWorkingDirectory)
 484                       write_pipe("git commit -a -F -", submitTemplate)
 485                       os.chdir(self.clientPath)
 486
 487                   write_pipe("p4 submit -i", submitTemplate)
 488            elif response == "s":
 489                for f in editedFiles:
 490                    system("p4 revert \"%s\"" % f);
 491                for f in filesToAdd:
 492                    system("p4 revert \"%s\"" % f);
 493                    system("rm %s" %f)
 494                for f in filesToDelete:
 495                    system("p4 delete \"%s\"" % f);
 496                return
 497            else:
 498                print "Not submitting!"
 499                self.interactive = False
 500        else:
 501            fileName = "submit.txt"
 502            file = open(fileName, "w+")
 503            file.write(self.prepareLogMessage(template, logMessage))
 504            file.close()
 505            print ("Perforce submit template written as %s. "
 506                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 507                   % (fileName, fileName))
 508
 509    def run(self, args):
 510        if len(args) == 0:
 511            self.master = currentGitBranch()
 512            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 513                die("Detecting current git branch failed!")
 514        elif len(args) == 1:
 515            self.master = args[0]
 516        else:
 517            return False
 518
 519        [upstream, settings] = findUpstreamBranchPoint()
 520        depotPath = settings['depot-paths'][0]
 521        if len(self.origin) == 0:
 522            self.origin = upstream
 523
 524        if self.verbose:
 525            print "Origin branch is " + self.origin
 526
 527        if len(depotPath) == 0:
 528            print "Internal error: cannot locate perforce depot path from existing branches"
 529            sys.exit(128)
 530
 531        self.clientPath = p4Where(depotPath)
 532
 533        if len(self.clientPath) == 0:
 534            print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 535            sys.exit(128)
 536
 537        print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 538        self.oldWorkingDirectory = os.getcwd()
 539
 540        if self.directSubmit:
 541            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 542            if len(self.diffStatus) == 0:
 543                print "No changes in working directory to submit."
 544                return True
 545            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 546            self.diffFile = self.gitdir + "/p4-git-diff"
 547            f = open(self.diffFile, "wb")
 548            f.write(patch)
 549            f.close();
 550
 551        os.chdir(self.clientPath)
 552        response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 553        if response == "y" or response == "yes":
 554            system("p4 sync ...")
 555
 556        if self.reset:
 557            self.firstTime = True
 558
 559        if len(self.substFile) > 0:
 560            for line in open(self.substFile, "r").readlines():
 561                tokens = line.strip().split("=")
 562                self.logSubstitutions[tokens[0]] = tokens[1]
 563
 564        self.check()
 565        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 566        self.config = shelve.open(self.configFile, writeback=True)
 567
 568        if self.firstTime:
 569            self.start()
 570
 571        commits = self.config.get("commits", [])
 572
 573        while len(commits) > 0:
 574            self.firstTime = False
 575            commit = commits[0]
 576            commits = commits[1:]
 577            self.config["commits"] = commits
 578            self.applyCommit(commit)
 579            if not self.interactive:
 580                break
 581
 582        self.config.close()
 583
 584        if self.directSubmit:
 585            os.remove(self.diffFile)
 586
 587        if len(commits) == 0:
 588            if self.firstTime:
 589                print "No changes found to apply between %s and current HEAD" % self.origin
 590            else:
 591                print "All changes applied!"
 592                os.chdir(self.oldWorkingDirectory)
 593                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 594                if response == "y" or response == "yes":
 595                    rebase = P4Rebase()
 596                    rebase.run([])
 597            os.remove(self.configFile)
 598
 599        return True
 600
 601class P4Sync(Command):
 602    def __init__(self):
 603        Command.__init__(self)
 604        self.options = [
 605                optparse.make_option("--branch", dest="branch"),
 606                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 607                optparse.make_option("--changesfile", dest="changesFile"),
 608                optparse.make_option("--silent", dest="silent", action="store_true"),
 609                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 610                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 611                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 612                                     help="Import into refs/heads/ , not refs/remotes"),
 613                optparse.make_option("--max-changes", dest="maxChanges"),
 614                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 615                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 616        ]
 617        self.description = """Imports from Perforce into a git repository.\n
 618    example:
 619    //depot/my/project/ -- to import the current head
 620    //depot/my/project/@all -- to import everything
 621    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 622
 623    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 624
 625        self.usage += " //depot/path[@revRange]"
 626        self.silent = False
 627        self.createdBranches = Set()
 628        self.committedChanges = Set()
 629        self.branch = ""
 630        self.detectBranches = False
 631        self.detectLabels = False
 632        self.changesFile = ""
 633        self.syncWithOrigin = True
 634        self.verbose = False
 635        self.importIntoRemotes = True
 636        self.maxChanges = ""
 637        self.isWindows = (platform.system() == "Windows")
 638        self.keepRepoPath = False
 639        self.depotPaths = None
 640        self.p4BranchesInGit = []
 641
 642        if gitConfig("git-p4.syncFromOrigin") == "false":
 643            self.syncWithOrigin = False
 644
 645    def extractFilesFromCommit(self, commit):
 646        files = []
 647        fnum = 0
 648        while commit.has_key("depotFile%s" % fnum):
 649            path =  commit["depotFile%s" % fnum]
 650
 651            found = [p for p in self.depotPaths
 652                     if path.startswith (p)]
 653            if not found:
 654                fnum = fnum + 1
 655                continue
 656
 657            file = {}
 658            file["path"] = path
 659            file["rev"] = commit["rev%s" % fnum]
 660            file["action"] = commit["action%s" % fnum]
 661            file["type"] = commit["type%s" % fnum]
 662            files.append(file)
 663            fnum = fnum + 1
 664        return files
 665
 666    def stripRepoPath(self, path, prefixes):
 667        if self.keepRepoPath:
 668            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 669
 670        for p in prefixes:
 671            if path.startswith(p):
 672                path = path[len(p):]
 673
 674        return path
 675
 676    def splitFilesIntoBranches(self, commit):
 677        branches = {}
 678        fnum = 0
 679        while commit.has_key("depotFile%s" % fnum):
 680            path =  commit["depotFile%s" % fnum]
 681            found = [p for p in self.depotPaths
 682                     if path.startswith (p)]
 683            if not found:
 684                fnum = fnum + 1
 685                continue
 686
 687            file = {}
 688            file["path"] = path
 689            file["rev"] = commit["rev%s" % fnum]
 690            file["action"] = commit["action%s" % fnum]
 691            file["type"] = commit["type%s" % fnum]
 692            fnum = fnum + 1
 693
 694            relPath = self.stripRepoPath(path, self.depotPaths)
 695
 696            for branch in self.knownBranches.keys():
 697
 698                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 699                if relPath.startswith(branch + "/"):
 700                    if branch not in branches:
 701                        branches[branch] = []
 702                    branches[branch].append(file)
 703                    break
 704
 705        return branches
 706
 707    ## Should move this out, doesn't use SELF.
 708    def readP4Files(self, files):
 709        files = [f for f in files
 710                 if f['action'] != 'delete']
 711
 712        if not files:
 713            return
 714
 715        # We cannot put all the files on the command line
 716        # OS have limitations on the max lenght of arguments
 717        # POSIX says it's 4096 bytes, default for Linux seems to be 130 K.
 718        # and all OS from the table below seems to be higher than POSIX.
 719        # See http://www.in-ulm.de/~mascheck/various/argmax/
 720        if (self.isWindows):
 721            argmax = 2000
 722        else:
 723            argmax = min(4000, os.sysconf('SC_ARG_MAX'))
 724
 725        chunk = ''
 726        filedata = []
 727        for i in xrange(len(files)):
 728            f = files[i]
 729            chunk += '"%s#%s" ' % (f['path'], f['rev'])
 730            if len(chunk) > argmax or i == len(files)-1:
 731                data = p4CmdList('print %s' % chunk)
 732                if "p4ExitCode" in data[0]:
 733                    die("Problems executing p4. Error: [%d]." % (data[0]['p4ExitCode']));
 734                filedata.extend(data)
 735                chunk = ''
 736
 737        j = 0;
 738        contents = {}
 739        while j < len(filedata):
 740            stat = filedata[j]
 741            j += 1
 742            text = ''
 743            while j < len(filedata) and filedata[j]['code'] in ('text',
 744                                                                'binary'):
 745                text += filedata[j]['data']
 746                j += 1
 747
 748
 749            if not stat.has_key('depotFile'):
 750                sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 751                continue
 752
 753            contents[stat['depotFile']] = text
 754
 755        for f in files:
 756            assert not f.has_key('data')
 757            f['data'] = contents[f['path']]
 758
 759    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 760        epoch = details["time"]
 761        author = details["user"]
 762
 763        if self.verbose:
 764            print "commit into %s" % branch
 765
 766        # start with reading files; if that fails, we should not
 767        # create a commit.
 768        new_files = []
 769        for f in files:
 770            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 771                new_files.append (f)
 772            else:
 773                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 774        files = new_files
 775        self.readP4Files(files)
 776
 777
 778
 779
 780        self.gitStream.write("commit %s\n" % branch)
 781#        gitStream.write("mark :%s\n" % details["change"])
 782        self.committedChanges.add(int(details["change"]))
 783        committer = ""
 784        if author not in self.users:
 785            self.getUserMapFromPerforceServer()
 786        if author in self.users:
 787            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 788        else:
 789            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 790
 791        self.gitStream.write("committer %s\n" % committer)
 792
 793        self.gitStream.write("data <<EOT\n")
 794        self.gitStream.write(details["desc"])
 795        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
 796                             % (','.join (branchPrefixes), details["change"]))
 797        if len(details['options']) > 0:
 798            self.gitStream.write(": options = %s" % details['options'])
 799        self.gitStream.write("]\nEOT\n\n")
 800
 801        if len(parent) > 0:
 802            if self.verbose:
 803                print "parent %s" % parent
 804            self.gitStream.write("from %s\n" % parent)
 805
 806        for file in files:
 807            if file["type"] == "apple":
 808                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 809                continue
 810
 811            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 812            if file["action"] == "delete":
 813                self.gitStream.write("D %s\n" % relPath)
 814            else:
 815                mode = 644
 816                if file["type"].startswith("x"):
 817                    mode = 755
 818
 819                data = file['data']
 820
 821                if self.isWindows and file["type"].endswith("text"):
 822                    data = data.replace("\r\n", "\n")
 823
 824                self.gitStream.write("M %d inline %s\n" % (mode, relPath))
 825                self.gitStream.write("data %s\n" % len(data))
 826                self.gitStream.write(data)
 827                self.gitStream.write("\n")
 828
 829        self.gitStream.write("\n")
 830
 831        change = int(details["change"])
 832
 833        if self.labels.has_key(change):
 834            label = self.labels[change]
 835            labelDetails = label[0]
 836            labelRevisions = label[1]
 837            if self.verbose:
 838                print "Change %s is labelled %s" % (change, labelDetails)
 839
 840            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 841                                                    for p in branchPrefixes]))
 842
 843            if len(files) == len(labelRevisions):
 844
 845                cleanedFiles = {}
 846                for info in files:
 847                    if info["action"] == "delete":
 848                        continue
 849                    cleanedFiles[info["depotFile"]] = info["rev"]
 850
 851                if cleanedFiles == labelRevisions:
 852                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 853                    self.gitStream.write("from %s\n" % branch)
 854
 855                    owner = labelDetails["Owner"]
 856                    tagger = ""
 857                    if author in self.users:
 858                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 859                    else:
 860                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 861                    self.gitStream.write("tagger %s\n" % tagger)
 862                    self.gitStream.write("data <<EOT\n")
 863                    self.gitStream.write(labelDetails["Description"])
 864                    self.gitStream.write("EOT\n\n")
 865
 866                else:
 867                    if not self.silent:
 868                        print ("Tag %s does not match with change %s: files do not match."
 869                               % (labelDetails["label"], change))
 870
 871            else:
 872                if not self.silent:
 873                    print ("Tag %s does not match with change %s: file count is different."
 874                           % (labelDetails["label"], change))
 875
 876    def getUserCacheFilename(self):
 877        return os.environ["HOME"] + "/.gitp4-usercache.txt"
 878
 879    def getUserMapFromPerforceServer(self):
 880        if self.userMapFromPerforceServer:
 881            return
 882        self.users = {}
 883
 884        for output in p4CmdList("users"):
 885            if not output.has_key("User"):
 886                continue
 887            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 888
 889
 890        s = ''
 891        for (key, val) in self.users.items():
 892            s += "%s\t%s\n" % (key, val)
 893
 894        open(self.getUserCacheFilename(), "wb").write(s)
 895        self.userMapFromPerforceServer = True
 896
 897    def loadUserMapFromCache(self):
 898        self.users = {}
 899        self.userMapFromPerforceServer = False
 900        try:
 901            cache = open(self.getUserCacheFilename(), "rb")
 902            lines = cache.readlines()
 903            cache.close()
 904            for line in lines:
 905                entry = line.strip().split("\t")
 906                self.users[entry[0]] = entry[1]
 907        except IOError:
 908            self.getUserMapFromPerforceServer()
 909
 910    def getLabels(self):
 911        self.labels = {}
 912
 913        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 914        if len(l) > 0 and not self.silent:
 915            print "Finding files belonging to labels in %s" % `self.depotPath`
 916
 917        for output in l:
 918            label = output["label"]
 919            revisions = {}
 920            newestChange = 0
 921            if self.verbose:
 922                print "Querying files for label %s" % label
 923            for file in p4CmdList("files "
 924                                  +  ' '.join (["%s...@%s" % (p, label)
 925                                                for p in self.depotPaths])):
 926                revisions[file["depotFile"]] = file["rev"]
 927                change = int(file["change"])
 928                if change > newestChange:
 929                    newestChange = change
 930
 931            self.labels[newestChange] = [output, revisions]
 932
 933        if self.verbose:
 934            print "Label changes: %s" % self.labels.keys()
 935
 936    def guessProjectName(self):
 937        for p in self.depotPaths:
 938            if p.endswith("/"):
 939                p = p[:-1]
 940            p = p[p.strip().rfind("/") + 1:]
 941            if not p.endswith("/"):
 942               p += "/"
 943            return p
 944
 945    def getBranchMapping(self):
 946        lostAndFoundBranches = set()
 947
 948        for info in p4CmdList("branches"):
 949            details = p4Cmd("branch -o %s" % info["branch"])
 950            viewIdx = 0
 951            while details.has_key("View%s" % viewIdx):
 952                paths = details["View%s" % viewIdx].split(" ")
 953                viewIdx = viewIdx + 1
 954                # require standard //depot/foo/... //depot/bar/... mapping
 955                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 956                    continue
 957                source = paths[0]
 958                destination = paths[1]
 959                ## HACK
 960                if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
 961                    source = source[len(self.depotPaths[0]):-4]
 962                    destination = destination[len(self.depotPaths[0]):-4]
 963
 964                    if destination in self.knownBranches:
 965                        if not self.silent:
 966                            print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
 967                            print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
 968                        continue
 969
 970                    self.knownBranches[destination] = source
 971
 972                    lostAndFoundBranches.discard(destination)
 973
 974                    if source not in self.knownBranches:
 975                        lostAndFoundBranches.add(source)
 976
 977
 978        for branch in lostAndFoundBranches:
 979            self.knownBranches[branch] = branch
 980
 981    def listExistingP4GitBranches(self):
 982        self.p4BranchesInGit = []
 983
 984        cmdline = "git rev-parse --symbolic "
 985        if self.importIntoRemotes:
 986            cmdline += " --remotes"
 987        else:
 988            cmdline += " --branches"
 989
 990        for line in read_pipe_lines(cmdline):
 991            line = line.strip()
 992
 993            ## only import to p4/
 994            if not line.startswith('p4/') or line == "p4/HEAD":
 995                continue
 996            branch = line
 997
 998            # strip off p4
 999            branch = re.sub ("^p4/", "", line)
1000
1001            self.p4BranchesInGit.append(branch)
1002            self.initialParents[self.refPrefix + branch] = parseRevision(line)
1003
1004    def createOrUpdateBranchesFromOrigin(self):
1005        if not self.silent:
1006            print ("Creating/updating branch(es) in %s based on origin branch(es)"
1007                   % self.refPrefix)
1008
1009        originPrefix = "origin/p4/"
1010
1011        for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
1012            line = line.strip()
1013            if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
1014                continue
1015
1016            headName = line[len(originPrefix):]
1017            remoteHead = self.refPrefix + headName
1018            originHead = line
1019
1020            original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
1021            if (not original.has_key('depot-paths')
1022                or not original.has_key('change')):
1023                continue
1024
1025            update = False
1026            if not gitBranchExists(remoteHead):
1027                if self.verbose:
1028                    print "creating %s" % remoteHead
1029                update = True
1030            else:
1031                settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
1032                if settings.has_key('change') > 0:
1033                    if settings['depot-paths'] == original['depot-paths']:
1034                        originP4Change = int(original['change'])
1035                        p4Change = int(settings['change'])
1036                        if originP4Change > p4Change:
1037                            print ("%s (%s) is newer than %s (%s). "
1038                                   "Updating p4 branch from origin."
1039                                   % (originHead, originP4Change,
1040                                      remoteHead, p4Change))
1041                            update = True
1042                    else:
1043                        print ("Ignoring: %s was imported from %s while "
1044                               "%s was imported from %s"
1045                               % (originHead, ','.join(original['depot-paths']),
1046                                  remoteHead, ','.join(settings['depot-paths'])))
1047
1048            if update:
1049                system("git update-ref %s %s" % (remoteHead, originHead))
1050
1051    def updateOptionDict(self, d):
1052        option_keys = {}
1053        if self.keepRepoPath:
1054            option_keys['keepRepoPath'] = 1
1055
1056        d["options"] = ' '.join(sorted(option_keys.keys()))
1057
1058    def readOptions(self, d):
1059        self.keepRepoPath = (d.has_key('options')
1060                             and ('keepRepoPath' in d['options']))
1061
1062    def run(self, args):
1063        self.depotPaths = []
1064        self.changeRange = ""
1065        self.initialParent = ""
1066        self.previousDepotPaths = []
1067
1068        # map from branch depot path to parent branch
1069        self.knownBranches = {}
1070        self.initialParents = {}
1071        self.hasOrigin = gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
1072        if not self.syncWithOrigin:
1073            self.hasOrigin = False
1074
1075        if self.importIntoRemotes:
1076            self.refPrefix = "refs/remotes/p4/"
1077        else:
1078            self.refPrefix = "refs/heads/p4/"
1079
1080        if self.syncWithOrigin and self.hasOrigin:
1081            if not self.silent:
1082                print "Syncing with origin first by calling git fetch origin"
1083            system("git fetch origin")
1084
1085        if len(self.branch) == 0:
1086            self.branch = self.refPrefix + "master"
1087            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1088                system("git update-ref %s refs/heads/p4" % self.branch)
1089                system("git branch -D p4");
1090            # create it /after/ importing, when master exists
1091            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1092                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1093
1094        # TODO: should always look at previous commits,
1095        # merge with previous imports, if possible.
1096        if args == []:
1097            if self.hasOrigin:
1098                self.createOrUpdateBranchesFromOrigin()
1099            self.listExistingP4GitBranches()
1100
1101            if len(self.p4BranchesInGit) > 1:
1102                if not self.silent:
1103                    print "Importing from/into multiple branches"
1104                self.detectBranches = True
1105
1106            if self.verbose:
1107                print "branches: %s" % self.p4BranchesInGit
1108
1109            p4Change = 0
1110            for branch in self.p4BranchesInGit:
1111                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1112
1113                settings = extractSettingsGitLog(logMsg)
1114
1115                self.readOptions(settings)
1116                if (settings.has_key('depot-paths')
1117                    and settings.has_key ('change')):
1118                    change = int(settings['change']) + 1
1119                    p4Change = max(p4Change, change)
1120
1121                    depotPaths = sorted(settings['depot-paths'])
1122                    if self.previousDepotPaths == []:
1123                        self.previousDepotPaths = depotPaths
1124                    else:
1125                        paths = []
1126                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1127                            for i in range(0, min(len(cur), len(prev))):
1128                                if cur[i] <> prev[i]:
1129                                    i = i - 1
1130                                    break
1131
1132                            paths.append (cur[:i + 1])
1133
1134                        self.previousDepotPaths = paths
1135
1136            if p4Change > 0:
1137                self.depotPaths = sorted(self.previousDepotPaths)
1138                self.changeRange = "@%s,#head" % p4Change
1139                if not self.detectBranches:
1140                    self.initialParent = parseRevision(self.branch)
1141                if not self.silent and not self.detectBranches:
1142                    print "Performing incremental import into %s git branch" % self.branch
1143
1144        if not self.branch.startswith("refs/"):
1145            self.branch = "refs/heads/" + self.branch
1146
1147        if len(args) == 0 and self.depotPaths:
1148            if not self.silent:
1149                print "Depot paths: %s" % ' '.join(self.depotPaths)
1150        else:
1151            if self.depotPaths and self.depotPaths != args:
1152                print ("previous import used depot path %s and now %s was specified. "
1153                       "This doesn't work!" % (' '.join (self.depotPaths),
1154                                               ' '.join (args)))
1155                sys.exit(1)
1156
1157            self.depotPaths = sorted(args)
1158
1159        self.revision = ""
1160        self.users = {}
1161
1162        newPaths = []
1163        for p in self.depotPaths:
1164            if p.find("@") != -1:
1165                atIdx = p.index("@")
1166                self.changeRange = p[atIdx:]
1167                if self.changeRange == "@all":
1168                    self.changeRange = ""
1169                elif ',' not in self.changeRange:
1170                    self.revision = self.changeRange
1171                    self.changeRange = ""
1172                p = p[0:atIdx]
1173            elif p.find("#") != -1:
1174                hashIdx = p.index("#")
1175                self.revision = p[hashIdx:]
1176                p = p[0:hashIdx]
1177            elif self.previousDepotPaths == []:
1178                self.revision = "#head"
1179
1180            p = re.sub ("\.\.\.$", "", p)
1181            if not p.endswith("/"):
1182                p += "/"
1183
1184            newPaths.append(p)
1185
1186        self.depotPaths = newPaths
1187
1188
1189        self.loadUserMapFromCache()
1190        self.labels = {}
1191        if self.detectLabels:
1192            self.getLabels();
1193
1194        if self.detectBranches:
1195            ## FIXME - what's a P4 projectName ?
1196            self.projectName = self.guessProjectName()
1197
1198            if not self.hasOrigin:
1199                self.getBranchMapping();
1200            if self.verbose:
1201                print "p4-git branches: %s" % self.p4BranchesInGit
1202                print "initial parents: %s" % self.initialParents
1203            for b in self.p4BranchesInGit:
1204                if b != "master":
1205
1206                    ## FIXME
1207                    b = b[len(self.projectName):]
1208                self.createdBranches.add(b)
1209
1210        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1211
1212        importProcess = subprocess.Popen(["git", "fast-import"],
1213                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1214                                         stderr=subprocess.PIPE);
1215        self.gitOutput = importProcess.stdout
1216        self.gitStream = importProcess.stdin
1217        self.gitError = importProcess.stderr
1218
1219        if self.revision:
1220            print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
1221
1222            details = { "user" : "git perforce import user", "time" : int(time.time()) }
1223            details["desc"] = ("Initial import of %s from the state at revision %s"
1224                               % (' '.join(self.depotPaths), self.revision))
1225            details["change"] = self.revision
1226            newestRevision = 0
1227
1228            fileCnt = 0
1229            for info in p4CmdList("files "
1230                                  +  ' '.join(["%s...%s"
1231                                               % (p, self.revision)
1232                                               for p in self.depotPaths])):
1233
1234                if info['code'] == 'error':
1235                    sys.stderr.write("p4 returned an error: %s\n"
1236                                     % info['data'])
1237                    sys.exit(1)
1238
1239
1240                change = int(info["change"])
1241                if change > newestRevision:
1242                    newestRevision = change
1243
1244                if info["action"] == "delete":
1245                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1246                    #fileCnt = fileCnt + 1
1247                    continue
1248
1249                for prop in ["depotFile", "rev", "action", "type" ]:
1250                    details["%s%s" % (prop, fileCnt)] = info[prop]
1251
1252                fileCnt = fileCnt + 1
1253
1254            details["change"] = newestRevision
1255            self.updateOptionDict(details)
1256            try:
1257                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1258            except IOError:
1259                print "IO error with git fast-import. Is your git version recent enough?"
1260                print self.gitError.read()
1261
1262        else:
1263            changes = []
1264
1265            if len(self.changesFile) > 0:
1266                output = open(self.changesFile).readlines()
1267                changeSet = Set()
1268                for line in output:
1269                    changeSet.add(int(line))
1270
1271                for change in changeSet:
1272                    changes.append(change)
1273
1274                changes.sort()
1275            else:
1276                if self.verbose:
1277                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1278                                                              self.changeRange)
1279                assert self.depotPaths
1280                output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1281                                                                    for p in self.depotPaths]))
1282
1283                for line in output:
1284                    changeNum = line.split(" ")[1]
1285                    changes.append(changeNum)
1286
1287                changes.reverse()
1288
1289                if len(self.maxChanges) > 0:
1290                    changes = changes[0:min(int(self.maxChanges), len(changes))]
1291
1292            if len(changes) == 0:
1293                if not self.silent:
1294                    print "No changes to import!"
1295                return True
1296
1297            if not self.silent and not self.detectBranches:
1298                print "Import destination: %s" % self.branch
1299
1300            self.updatedBranches = set()
1301
1302            cnt = 1
1303            for change in changes:
1304                description = p4Cmd("describe %s" % change)
1305                self.updateOptionDict(description)
1306
1307                if not self.silent:
1308                    sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1309                    sys.stdout.flush()
1310                cnt = cnt + 1
1311
1312                try:
1313                    if self.detectBranches:
1314                        branches = self.splitFilesIntoBranches(description)
1315                        for branch in branches.keys():
1316                            ## HACK  --hwn
1317                            branchPrefix = self.depotPaths[0] + branch + "/"
1318
1319                            parent = ""
1320
1321                            filesForCommit = branches[branch]
1322
1323                            if self.verbose:
1324                                print "branch is %s" % branch
1325
1326                            self.updatedBranches.add(branch)
1327
1328                            if branch not in self.createdBranches:
1329                                self.createdBranches.add(branch)
1330                                parent = self.knownBranches[branch]
1331                                if parent == branch:
1332                                    parent = ""
1333                                elif self.verbose:
1334                                    print "parent determined through known branches: %s" % parent
1335
1336                            # main branch? use master
1337                            if branch == "main":
1338                                branch = "master"
1339                            else:
1340
1341                                ## FIXME
1342                                branch = self.projectName + branch
1343
1344                            if parent == "main":
1345                                parent = "master"
1346                            elif len(parent) > 0:
1347                                ## FIXME
1348                                parent = self.projectName + parent
1349
1350                            branch = self.refPrefix + branch
1351                            if len(parent) > 0:
1352                                parent = self.refPrefix + parent
1353
1354                            if self.verbose:
1355                                print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1356
1357                            if len(parent) == 0 and branch in self.initialParents:
1358                                parent = self.initialParents[branch]
1359                                del self.initialParents[branch]
1360
1361                            self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1362                    else:
1363                        files = self.extractFilesFromCommit(description)
1364                        self.commit(description, files, self.branch, self.depotPaths,
1365                                    self.initialParent)
1366                        self.initialParent = ""
1367                except IOError:
1368                    print self.gitError.read()
1369                    sys.exit(1)
1370
1371            if not self.silent:
1372                print ""
1373                if len(self.updatedBranches) > 0:
1374                    sys.stdout.write("Updated branches: ")
1375                    for b in self.updatedBranches:
1376                        sys.stdout.write("%s " % b)
1377                    sys.stdout.write("\n")
1378
1379
1380        self.gitStream.close()
1381        if importProcess.wait() != 0:
1382            die("fast-import failed: %s" % self.gitError.read())
1383        self.gitOutput.close()
1384        self.gitError.close()
1385
1386        return True
1387
1388class P4Rebase(Command):
1389    def __init__(self):
1390        Command.__init__(self)
1391        self.options = [ ]
1392        self.description = ("Fetches the latest revision from perforce and "
1393                            + "rebases the current work (branch) against it")
1394        self.verbose = False
1395
1396    def run(self, args):
1397        sync = P4Sync()
1398        sync.run([])
1399
1400        [upstream, settings] = findUpstreamBranchPoint()
1401        if len(upstream) == 0:
1402            die("Cannot find upstream branchpoint for rebase")
1403
1404        # the branchpoint may be p4/foo~3, so strip off the parent
1405        upstream = re.sub("~[0-9]+$", "", upstream)
1406
1407        print "Rebasing the current branch onto %s" % upstream
1408        oldHead = read_pipe("git rev-parse HEAD").strip()
1409        system("git rebase %s" % upstream)
1410        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1411        return True
1412
1413class P4Clone(P4Sync):
1414    def __init__(self):
1415        P4Sync.__init__(self)
1416        self.description = "Creates a new git repository and imports from Perforce into it"
1417        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1418        self.options.append(
1419            optparse.make_option("--destination", dest="cloneDestination",
1420                                 action='store', default=None,
1421                                 help="where to leave result of the clone"))
1422        self.cloneDestination = None
1423        self.needsGit = False
1424
1425    def defaultDestination(self, args):
1426        ## TODO: use common prefix of args?
1427        depotPath = args[0]
1428        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1429        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1430        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1431        depotDir = re.sub(r"/$", "", depotDir)
1432        return os.path.split(depotDir)[1]
1433
1434    def run(self, args):
1435        if len(args) < 1:
1436            return False
1437
1438        if self.keepRepoPath and not self.cloneDestination:
1439            sys.stderr.write("Must specify destination for --keep-path\n")
1440            sys.exit(1)
1441
1442        depotPaths = args
1443
1444        if not self.cloneDestination and len(depotPaths) > 1:
1445            self.cloneDestination = depotPaths[-1]
1446            depotPaths = depotPaths[:-1]
1447
1448        for p in depotPaths:
1449            if not p.startswith("//"):
1450                return False
1451
1452        if not self.cloneDestination:
1453            self.cloneDestination = self.defaultDestination(args)
1454
1455        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1456        if not os.path.exists(self.cloneDestination):
1457            os.makedirs(self.cloneDestination)
1458        os.chdir(self.cloneDestination)
1459        system("git init")
1460        self.gitdir = os.getcwd() + "/.git"
1461        if not P4Sync.run(self, depotPaths):
1462            return False
1463        if self.branch != "master":
1464            if gitBranchExists("refs/remotes/p4/master"):
1465                system("git branch master refs/remotes/p4/master")
1466                system("git checkout -f")
1467            else:
1468                print "Could not detect main branch. No checkout/master branch created."
1469
1470        return True
1471
1472class P4Branches(Command):
1473    def __init__(self):
1474        Command.__init__(self)
1475        self.options = [ ]
1476        self.description = ("Shows the git branches that hold imports and their "
1477                            + "corresponding perforce depot paths")
1478        self.verbose = False
1479
1480    def run(self, args):
1481        cmdline = "git rev-parse --symbolic "
1482        cmdline += " --remotes"
1483
1484        for line in read_pipe_lines(cmdline):
1485            line = line.strip()
1486
1487            if not line.startswith('p4/') or line == "p4/HEAD":
1488                continue
1489            branch = line
1490
1491            log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1492            settings = extractSettingsGitLog(log)
1493
1494            print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1495        return True
1496
1497class HelpFormatter(optparse.IndentedHelpFormatter):
1498    def __init__(self):
1499        optparse.IndentedHelpFormatter.__init__(self)
1500
1501    def format_description(self, description):
1502        if description:
1503            return description + "\n"
1504        else:
1505            return ""
1506
1507def printUsage(commands):
1508    print "usage: %s <command> [options]" % sys.argv[0]
1509    print ""
1510    print "valid commands: %s" % ", ".join(commands)
1511    print ""
1512    print "Try %s <command> --help for command specific help." % sys.argv[0]
1513    print ""
1514
1515commands = {
1516    "debug" : P4Debug,
1517    "submit" : P4Submit,
1518    "sync" : P4Sync,
1519    "rebase" : P4Rebase,
1520    "clone" : P4Clone,
1521    "rollback" : P4RollBack,
1522    "branches" : P4Branches
1523}
1524
1525
1526def main():
1527    if len(sys.argv[1:]) == 0:
1528        printUsage(commands.keys())
1529        sys.exit(2)
1530
1531    cmd = ""
1532    cmdName = sys.argv[1]
1533    try:
1534        klass = commands[cmdName]
1535        cmd = klass()
1536    except KeyError:
1537        print "unknown command %s" % cmdName
1538        print ""
1539        printUsage(commands.keys())
1540        sys.exit(2)
1541
1542    options = cmd.options
1543    cmd.gitdir = os.environ.get("GIT_DIR", None)
1544
1545    args = sys.argv[2:]
1546
1547    if len(options) > 0:
1548        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1549
1550        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1551                                       options,
1552                                       description = cmd.description,
1553                                       formatter = HelpFormatter())
1554
1555        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1556    global verbose
1557    verbose = cmd.verbose
1558    if cmd.needsGit:
1559        if cmd.gitdir == None:
1560            cmd.gitdir = os.path.abspath(".git")
1561            if not isValidGitDir(cmd.gitdir):
1562                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1563                if os.path.exists(cmd.gitdir):
1564                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1565                    if len(cdup) > 0:
1566                        os.chdir(cdup);
1567
1568        if not isValidGitDir(cmd.gitdir):
1569            if isValidGitDir(cmd.gitdir + "/.git"):
1570                cmd.gitdir += "/.git"
1571            else:
1572                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1573
1574        os.environ["GIT_DIR"] = cmd.gitdir
1575
1576    if not cmd.run(args):
1577        parser.print_help()
1578
1579
1580if __name__ == '__main__':
1581    main()