Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit git-p4: Always call 'p4 sync ...' before submitting to Perforce. (31f9ec1)
   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
 234def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True):
 235    if not silent:
 236        print ("Creating/updating branch(es) in %s based on origin branch(es)"
 237               % localRefPrefix)
 238
 239    originPrefix = "origin/p4/"
 240
 241    for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 242        line = line.strip()
 243        if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
 244            continue
 245
 246        headName = line[len(originPrefix):]
 247        remoteHead = localRefPrefix + headName
 248        originHead = line
 249
 250        original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 251        if (not original.has_key('depot-paths')
 252            or not original.has_key('change')):
 253            continue
 254
 255        update = False
 256        if not gitBranchExists(remoteHead):
 257            if verbose:
 258                print "creating %s" % remoteHead
 259            update = True
 260        else:
 261            settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 262            if settings.has_key('change') > 0:
 263                if settings['depot-paths'] == original['depot-paths']:
 264                    originP4Change = int(original['change'])
 265                    p4Change = int(settings['change'])
 266                    if originP4Change > p4Change:
 267                        print ("%s (%s) is newer than %s (%s). "
 268                               "Updating p4 branch from origin."
 269                               % (originHead, originP4Change,
 270                                  remoteHead, p4Change))
 271                        update = True
 272                else:
 273                    print ("Ignoring: %s was imported from %s while "
 274                           "%s was imported from %s"
 275                           % (originHead, ','.join(original['depot-paths']),
 276                              remoteHead, ','.join(settings['depot-paths'])))
 277
 278        if update:
 279            system("git update-ref %s %s" % (remoteHead, originHead))
 280
 281def originP4BranchesExist():
 282        return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
 283
 284class Command:
 285    def __init__(self):
 286        self.usage = "usage: %prog [options]"
 287        self.needsGit = True
 288
 289class P4Debug(Command):
 290    def __init__(self):
 291        Command.__init__(self)
 292        self.options = [
 293            optparse.make_option("--verbose", dest="verbose", action="store_true",
 294                                 default=False),
 295            ]
 296        self.description = "A tool to debug the output of p4 -G."
 297        self.needsGit = False
 298        self.verbose = False
 299
 300    def run(self, args):
 301        j = 0
 302        for output in p4CmdList(" ".join(args)):
 303            print 'Element: %d' % j
 304            j += 1
 305            print output
 306        return True
 307
 308class P4RollBack(Command):
 309    def __init__(self):
 310        Command.__init__(self)
 311        self.options = [
 312            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 313            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 314        ]
 315        self.description = "A tool to debug the multi-branch import. Don't use :)"
 316        self.verbose = False
 317        self.rollbackLocalBranches = False
 318
 319    def run(self, args):
 320        if len(args) != 1:
 321            return False
 322        maxChange = int(args[0])
 323
 324        if "p4ExitCode" in p4Cmd("changes -m 1"):
 325            die("Problems executing p4");
 326
 327        if self.rollbackLocalBranches:
 328            refPrefix = "refs/heads/"
 329            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 330        else:
 331            refPrefix = "refs/remotes/"
 332            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 333
 334        for line in lines:
 335            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 336                line = line.strip()
 337                ref = refPrefix + line
 338                log = extractLogMessageFromGitCommit(ref)
 339                settings = extractSettingsGitLog(log)
 340
 341                depotPaths = settings['depot-paths']
 342                change = settings['change']
 343
 344                changed = False
 345
 346                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 347                                                           for p in depotPaths]))) == 0:
 348                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 349                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 350                    continue
 351
 352                while change and int(change) > maxChange:
 353                    changed = True
 354                    if self.verbose:
 355                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 356                    system("git update-ref %s \"%s^\"" % (ref, ref))
 357                    log = extractLogMessageFromGitCommit(ref)
 358                    settings =  extractSettingsGitLog(log)
 359
 360
 361                    depotPaths = settings['depot-paths']
 362                    change = settings['change']
 363
 364                if changed:
 365                    print "%s rewound to %s" % (ref, change)
 366
 367        return True
 368
 369class P4Submit(Command):
 370    def __init__(self):
 371        Command.__init__(self)
 372        self.options = [
 373                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 374                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 375                optparse.make_option("--origin", dest="origin"),
 376                optparse.make_option("--reset", action="store_true", dest="reset"),
 377                optparse.make_option("--log-substitutions", dest="substFile"),
 378                optparse.make_option("--dry-run", action="store_true"),
 379                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 380                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 381        ]
 382        self.description = "Submit changes from git to the perforce depot."
 383        self.usage += " [name of git branch to submit into perforce depot]"
 384        self.firstTime = True
 385        self.reset = False
 386        self.interactive = True
 387        self.dryRun = False
 388        self.substFile = ""
 389        self.firstTime = True
 390        self.origin = ""
 391        self.directSubmit = False
 392        self.trustMeLikeAFool = False
 393        self.verbose = False
 394        self.isWindows = (platform.system() == "Windows")
 395
 396        self.logSubstitutions = {}
 397        self.logSubstitutions["<enter description here>"] = "%log%"
 398        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 399
 400    def check(self):
 401        if len(p4CmdList("opened ...")) > 0:
 402            die("You have files opened with perforce! Close them before starting the sync.")
 403
 404    def start(self):
 405        if len(self.config) > 0 and not self.reset:
 406            die("Cannot start sync. Previous sync config found at %s\n"
 407                "If you want to start submitting again from scratch "
 408                "maybe you want to call git-p4 submit --reset" % self.configFile)
 409
 410        commits = []
 411        if self.directSubmit:
 412            commits.append("0")
 413        else:
 414            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 415                commits.append(line.strip())
 416            commits.reverse()
 417
 418        self.config["commits"] = commits
 419
 420    def prepareLogMessage(self, template, message):
 421        result = ""
 422
 423        for line in template.split("\n"):
 424            if line.startswith("#"):
 425                result += line + "\n"
 426                continue
 427
 428            substituted = False
 429            for key in self.logSubstitutions.keys():
 430                if line.find(key) != -1:
 431                    value = self.logSubstitutions[key]
 432                    value = value.replace("%log%", message)
 433                    if value != "@remove@":
 434                        result += line.replace(key, value) + "\n"
 435                    substituted = True
 436                    break
 437
 438            if not substituted:
 439                result += line + "\n"
 440
 441        return result
 442
 443    def prepareSubmitTemplate(self):
 444        # remove lines in the Files section that show changes to files outside the depot path we're committing into
 445        template = ""
 446        inFilesSection = False
 447        for line in read_pipe_lines("p4 change -o"):
 448            if inFilesSection:
 449                if line.startswith("\t"):
 450                    # path starts and ends with a tab
 451                    path = line[1:]
 452                    lastTab = path.rfind("\t")
 453                    if lastTab != -1:
 454                        path = path[:lastTab]
 455                        if not path.startswith(self.depotPath):
 456                            continue
 457                else:
 458                    inFilesSection = False
 459            else:
 460                if line.startswith("Files:"):
 461                    inFilesSection = True
 462
 463            template += line
 464
 465        return template
 466
 467    def applyCommit(self, id):
 468        if self.directSubmit:
 469            print "Applying local change in working directory/index"
 470            diff = self.diffStatus
 471        else:
 472            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 473            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 474        filesToAdd = set()
 475        filesToDelete = set()
 476        editedFiles = set()
 477        for line in diff:
 478            modifier = line[0]
 479            path = line[1:].strip()
 480            if modifier == "M":
 481                system("p4 edit \"%s\"" % path)
 482                editedFiles.add(path)
 483            elif modifier == "A":
 484                filesToAdd.add(path)
 485                if path in filesToDelete:
 486                    filesToDelete.remove(path)
 487            elif modifier == "D":
 488                filesToDelete.add(path)
 489                if path in filesToAdd:
 490                    filesToAdd.remove(path)
 491            else:
 492                die("unknown modifier %s for %s" % (modifier, path))
 493
 494        if self.directSubmit:
 495            diffcmd = "cat \"%s\"" % self.diffFile
 496        else:
 497            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 498        patchcmd = diffcmd + " | git apply "
 499        tryPatchCmd = patchcmd + "--check -"
 500        applyPatchCmd = patchcmd + "--check --apply -"
 501
 502        if os.system(tryPatchCmd) != 0:
 503            print "Unfortunately applying the change failed!"
 504            print "What do you want to do?"
 505            response = "x"
 506            while response != "s" and response != "a" and response != "w":
 507                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 508                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 509            if response == "s":
 510                print "Skipping! Good luck with the next patches..."
 511                return
 512            elif response == "a":
 513                os.system(applyPatchCmd)
 514                if len(filesToAdd) > 0:
 515                    print "You may also want to call p4 add on the following files:"
 516                    print " ".join(filesToAdd)
 517                if len(filesToDelete):
 518                    print "The following files should be scheduled for deletion with p4 delete:"
 519                    print " ".join(filesToDelete)
 520                die("Please resolve and submit the conflict manually and "
 521                    + "continue afterwards with git-p4 submit --continue")
 522            elif response == "w":
 523                system(diffcmd + " > patch.txt")
 524                print "Patch saved to patch.txt in %s !" % self.clientPath
 525                die("Please resolve and submit the conflict manually and "
 526                    "continue afterwards with git-p4 submit --continue")
 527
 528        system(applyPatchCmd)
 529
 530        for f in filesToAdd:
 531            system("p4 add \"%s\"" % f)
 532        for f in filesToDelete:
 533            system("p4 revert \"%s\"" % f)
 534            system("p4 delete \"%s\"" % f)
 535
 536        logMessage = ""
 537        if not self.directSubmit:
 538            logMessage = extractLogMessageFromGitCommit(id)
 539            logMessage = logMessage.replace("\n", "\n\t")
 540            if self.isWindows:
 541                logMessage = logMessage.replace("\n", "\r\n")
 542            logMessage = logMessage.strip()
 543
 544        template = self.prepareSubmitTemplate()
 545
 546        if self.interactive:
 547            submitTemplate = self.prepareLogMessage(template, logMessage)
 548            diff = read_pipe("p4 diff -du ...")
 549
 550            for newFile in filesToAdd:
 551                diff += "==== new file ====\n"
 552                diff += "--- /dev/null\n"
 553                diff += "+++ %s\n" % newFile
 554                f = open(newFile, "r")
 555                for line in f.readlines():
 556                    diff += "+" + line
 557                f.close()
 558
 559            separatorLine = "######## everything below this line is just the diff #######"
 560            if platform.system() == "Windows":
 561                separatorLine += "\r"
 562            separatorLine += "\n"
 563
 564            response = "e"
 565            if self.trustMeLikeAFool:
 566                response = "y"
 567
 568            firstIteration = True
 569            while response == "e":
 570                if not firstIteration:
 571                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 572                firstIteration = False
 573                if response == "e":
 574                    [handle, fileName] = tempfile.mkstemp()
 575                    tmpFile = os.fdopen(handle, "w+")
 576                    tmpFile.write(submitTemplate + separatorLine + diff)
 577                    tmpFile.close()
 578                    defaultEditor = "vi"
 579                    if platform.system() == "Windows":
 580                        defaultEditor = "notepad"
 581                    editor = os.environ.get("EDITOR", defaultEditor);
 582                    system(editor + " " + fileName)
 583                    tmpFile = open(fileName, "rb")
 584                    message = tmpFile.read()
 585                    tmpFile.close()
 586                    os.remove(fileName)
 587                    submitTemplate = message[:message.index(separatorLine)]
 588                    if self.isWindows:
 589                        submitTemplate = submitTemplate.replace("\r\n", "\n")
 590
 591            if response == "y" or response == "yes":
 592               if self.dryRun:
 593                   print submitTemplate
 594                   raw_input("Press return to continue...")
 595               else:
 596                   if self.directSubmit:
 597                       print "Submitting to git first"
 598                       os.chdir(self.oldWorkingDirectory)
 599                       write_pipe("git commit -a -F -", submitTemplate)
 600                       os.chdir(self.clientPath)
 601
 602                   write_pipe("p4 submit -i", submitTemplate)
 603            elif response == "s":
 604                for f in editedFiles:
 605                    system("p4 revert \"%s\"" % f);
 606                for f in filesToAdd:
 607                    system("p4 revert \"%s\"" % f);
 608                    system("rm %s" %f)
 609                for f in filesToDelete:
 610                    system("p4 delete \"%s\"" % f);
 611                return
 612            else:
 613                print "Not submitting!"
 614                self.interactive = False
 615        else:
 616            fileName = "submit.txt"
 617            file = open(fileName, "w+")
 618            file.write(self.prepareLogMessage(template, logMessage))
 619            file.close()
 620            print ("Perforce submit template written as %s. "
 621                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 622                   % (fileName, fileName))
 623
 624    def run(self, args):
 625        if len(args) == 0:
 626            self.master = currentGitBranch()
 627            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 628                die("Detecting current git branch failed!")
 629        elif len(args) == 1:
 630            self.master = args[0]
 631        else:
 632            return False
 633
 634        [upstream, settings] = findUpstreamBranchPoint()
 635        self.depotPath = settings['depot-paths'][0]
 636        if len(self.origin) == 0:
 637            self.origin = upstream
 638
 639        if self.verbose:
 640            print "Origin branch is " + self.origin
 641
 642        if len(self.depotPath) == 0:
 643            print "Internal error: cannot locate perforce depot path from existing branches"
 644            sys.exit(128)
 645
 646        self.clientPath = p4Where(self.depotPath)
 647
 648        if len(self.clientPath) == 0:
 649            print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
 650            sys.exit(128)
 651
 652        print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
 653        self.oldWorkingDirectory = os.getcwd()
 654
 655        if self.directSubmit:
 656            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 657            if len(self.diffStatus) == 0:
 658                print "No changes in working directory to submit."
 659                return True
 660            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 661            self.diffFile = self.gitdir + "/p4-git-diff"
 662            f = open(self.diffFile, "wb")
 663            f.write(patch)
 664            f.close();
 665
 666        os.chdir(self.clientPath)
 667        print "Syncronizing p4 checkout..."
 668        system("p4 sync ...")
 669
 670        if self.reset:
 671            self.firstTime = True
 672
 673        if len(self.substFile) > 0:
 674            for line in open(self.substFile, "r").readlines():
 675                tokens = line.strip().split("=")
 676                self.logSubstitutions[tokens[0]] = tokens[1]
 677
 678        self.check()
 679        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 680        self.config = shelve.open(self.configFile, writeback=True)
 681
 682        if self.firstTime:
 683            self.start()
 684
 685        commits = self.config.get("commits", [])
 686
 687        while len(commits) > 0:
 688            self.firstTime = False
 689            commit = commits[0]
 690            commits = commits[1:]
 691            self.config["commits"] = commits
 692            self.applyCommit(commit)
 693            if not self.interactive:
 694                break
 695
 696        self.config.close()
 697
 698        if self.directSubmit:
 699            os.remove(self.diffFile)
 700
 701        if len(commits) == 0:
 702            if self.firstTime:
 703                print "No changes found to apply between %s and current HEAD" % self.origin
 704            else:
 705                print "All changes applied!"
 706                os.chdir(self.oldWorkingDirectory)
 707                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 708                if response == "y" or response == "yes":
 709                    rebase = P4Rebase()
 710                    rebase.run([])
 711            os.remove(self.configFile)
 712
 713        return True
 714
 715class P4Sync(Command):
 716    def __init__(self):
 717        Command.__init__(self)
 718        self.options = [
 719                optparse.make_option("--branch", dest="branch"),
 720                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 721                optparse.make_option("--changesfile", dest="changesFile"),
 722                optparse.make_option("--silent", dest="silent", action="store_true"),
 723                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 724                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 725                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 726                                     help="Import into refs/heads/ , not refs/remotes"),
 727                optparse.make_option("--max-changes", dest="maxChanges"),
 728                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 729                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 730        ]
 731        self.description = """Imports from Perforce into a git repository.\n
 732    example:
 733    //depot/my/project/ -- to import the current head
 734    //depot/my/project/@all -- to import everything
 735    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 736
 737    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 738
 739        self.usage += " //depot/path[@revRange]"
 740        self.silent = False
 741        self.createdBranches = Set()
 742        self.committedChanges = Set()
 743        self.branch = ""
 744        self.detectBranches = False
 745        self.detectLabels = False
 746        self.changesFile = ""
 747        self.syncWithOrigin = True
 748        self.verbose = False
 749        self.importIntoRemotes = True
 750        self.maxChanges = ""
 751        self.isWindows = (platform.system() == "Windows")
 752        self.keepRepoPath = False
 753        self.depotPaths = None
 754        self.p4BranchesInGit = []
 755
 756        if gitConfig("git-p4.syncFromOrigin") == "false":
 757            self.syncWithOrigin = False
 758
 759    def extractFilesFromCommit(self, commit):
 760        files = []
 761        fnum = 0
 762        while commit.has_key("depotFile%s" % fnum):
 763            path =  commit["depotFile%s" % fnum]
 764
 765            found = [p for p in self.depotPaths
 766                     if path.startswith (p)]
 767            if not found:
 768                fnum = fnum + 1
 769                continue
 770
 771            file = {}
 772            file["path"] = path
 773            file["rev"] = commit["rev%s" % fnum]
 774            file["action"] = commit["action%s" % fnum]
 775            file["type"] = commit["type%s" % fnum]
 776            files.append(file)
 777            fnum = fnum + 1
 778        return files
 779
 780    def stripRepoPath(self, path, prefixes):
 781        if self.keepRepoPath:
 782            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 783
 784        for p in prefixes:
 785            if path.startswith(p):
 786                path = path[len(p):]
 787
 788        return path
 789
 790    def splitFilesIntoBranches(self, commit):
 791        branches = {}
 792        fnum = 0
 793        while commit.has_key("depotFile%s" % fnum):
 794            path =  commit["depotFile%s" % fnum]
 795            found = [p for p in self.depotPaths
 796                     if path.startswith (p)]
 797            if not found:
 798                fnum = fnum + 1
 799                continue
 800
 801            file = {}
 802            file["path"] = path
 803            file["rev"] = commit["rev%s" % fnum]
 804            file["action"] = commit["action%s" % fnum]
 805            file["type"] = commit["type%s" % fnum]
 806            fnum = fnum + 1
 807
 808            relPath = self.stripRepoPath(path, self.depotPaths)
 809
 810            for branch in self.knownBranches.keys():
 811
 812                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 813                if relPath.startswith(branch + "/"):
 814                    if branch not in branches:
 815                        branches[branch] = []
 816                    branches[branch].append(file)
 817                    break
 818
 819        return branches
 820
 821    ## Should move this out, doesn't use SELF.
 822    def readP4Files(self, files):
 823        files = [f for f in files
 824                 if f['action'] != 'delete']
 825
 826        if not files:
 827            return
 828
 829        filedata = p4CmdList('-x - print',
 830                             stdin='\n'.join(['%s#%s' % (f['path'], f['rev'])
 831                                              for f in files]),
 832                             stdin_mode='w+')
 833        if "p4ExitCode" in filedata[0]:
 834            die("Problems executing p4. Error: [%d]."
 835                % (filedata[0]['p4ExitCode']));
 836
 837        j = 0;
 838        contents = {}
 839        while j < len(filedata):
 840            stat = filedata[j]
 841            j += 1
 842            text = ''
 843            while j < len(filedata) and filedata[j]['code'] in ('text',
 844                                                                'binary'):
 845                text += filedata[j]['data']
 846                j += 1
 847
 848
 849            if not stat.has_key('depotFile'):
 850                sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 851                continue
 852
 853            contents[stat['depotFile']] = text
 854
 855        for f in files:
 856            assert not f.has_key('data')
 857            f['data'] = contents[f['path']]
 858
 859    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 860        epoch = details["time"]
 861        author = details["user"]
 862
 863        if self.verbose:
 864            print "commit into %s" % branch
 865
 866        # start with reading files; if that fails, we should not
 867        # create a commit.
 868        new_files = []
 869        for f in files:
 870            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 871                new_files.append (f)
 872            else:
 873                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 874        files = new_files
 875        self.readP4Files(files)
 876
 877
 878
 879
 880        self.gitStream.write("commit %s\n" % branch)
 881#        gitStream.write("mark :%s\n" % details["change"])
 882        self.committedChanges.add(int(details["change"]))
 883        committer = ""
 884        if author not in self.users:
 885            self.getUserMapFromPerforceServer()
 886        if author in self.users:
 887            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 888        else:
 889            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 890
 891        self.gitStream.write("committer %s\n" % committer)
 892
 893        self.gitStream.write("data <<EOT\n")
 894        self.gitStream.write(details["desc"])
 895        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
 896                             % (','.join (branchPrefixes), details["change"]))
 897        if len(details['options']) > 0:
 898            self.gitStream.write(": options = %s" % details['options'])
 899        self.gitStream.write("]\nEOT\n\n")
 900
 901        if len(parent) > 0:
 902            if self.verbose:
 903                print "parent %s" % parent
 904            self.gitStream.write("from %s\n" % parent)
 905
 906        for file in files:
 907            if file["type"] == "apple":
 908                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 909                continue
 910
 911            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 912            if file["action"] == "delete":
 913                self.gitStream.write("D %s\n" % relPath)
 914            else:
 915                data = file['data']
 916
 917                mode = "644"
 918                if file["type"].startswith("x"):
 919                    mode = "755"
 920                elif file["type"] == "symlink":
 921                    mode = "120000"
 922                    # p4 print on a symlink contains "target\n", so strip it off
 923                    data = data[:-1]
 924
 925                if self.isWindows and file["type"].endswith("text"):
 926                    data = data.replace("\r\n", "\n")
 927
 928                self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 929                self.gitStream.write("data %s\n" % len(data))
 930                self.gitStream.write(data)
 931                self.gitStream.write("\n")
 932
 933        self.gitStream.write("\n")
 934
 935        change = int(details["change"])
 936
 937        if self.labels.has_key(change):
 938            label = self.labels[change]
 939            labelDetails = label[0]
 940            labelRevisions = label[1]
 941            if self.verbose:
 942                print "Change %s is labelled %s" % (change, labelDetails)
 943
 944            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 945                                                    for p in branchPrefixes]))
 946
 947            if len(files) == len(labelRevisions):
 948
 949                cleanedFiles = {}
 950                for info in files:
 951                    if info["action"] == "delete":
 952                        continue
 953                    cleanedFiles[info["depotFile"]] = info["rev"]
 954
 955                if cleanedFiles == labelRevisions:
 956                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 957                    self.gitStream.write("from %s\n" % branch)
 958
 959                    owner = labelDetails["Owner"]
 960                    tagger = ""
 961                    if author in self.users:
 962                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 963                    else:
 964                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 965                    self.gitStream.write("tagger %s\n" % tagger)
 966                    self.gitStream.write("data <<EOT\n")
 967                    self.gitStream.write(labelDetails["Description"])
 968                    self.gitStream.write("EOT\n\n")
 969
 970                else:
 971                    if not self.silent:
 972                        print ("Tag %s does not match with change %s: files do not match."
 973                               % (labelDetails["label"], change))
 974
 975            else:
 976                if not self.silent:
 977                    print ("Tag %s does not match with change %s: file count is different."
 978                           % (labelDetails["label"], change))
 979
 980    def getUserCacheFilename(self):
 981        home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
 982        return home + "/.gitp4-usercache.txt"
 983
 984    def getUserMapFromPerforceServer(self):
 985        if self.userMapFromPerforceServer:
 986            return
 987        self.users = {}
 988
 989        for output in p4CmdList("users"):
 990            if not output.has_key("User"):
 991                continue
 992            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 993
 994
 995        s = ''
 996        for (key, val) in self.users.items():
 997            s += "%s\t%s\n" % (key, val)
 998
 999        open(self.getUserCacheFilename(), "wb").write(s)
1000        self.userMapFromPerforceServer = True
1001
1002    def loadUserMapFromCache(self):
1003        self.users = {}
1004        self.userMapFromPerforceServer = False
1005        try:
1006            cache = open(self.getUserCacheFilename(), "rb")
1007            lines = cache.readlines()
1008            cache.close()
1009            for line in lines:
1010                entry = line.strip().split("\t")
1011                self.users[entry[0]] = entry[1]
1012        except IOError:
1013            self.getUserMapFromPerforceServer()
1014
1015    def getLabels(self):
1016        self.labels = {}
1017
1018        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
1019        if len(l) > 0 and not self.silent:
1020            print "Finding files belonging to labels in %s" % `self.depotPath`
1021
1022        for output in l:
1023            label = output["label"]
1024            revisions = {}
1025            newestChange = 0
1026            if self.verbose:
1027                print "Querying files for label %s" % label
1028            for file in p4CmdList("files "
1029                                  +  ' '.join (["%s...@%s" % (p, label)
1030                                                for p in self.depotPaths])):
1031                revisions[file["depotFile"]] = file["rev"]
1032                change = int(file["change"])
1033                if change > newestChange:
1034                    newestChange = change
1035
1036            self.labels[newestChange] = [output, revisions]
1037
1038        if self.verbose:
1039            print "Label changes: %s" % self.labels.keys()
1040
1041    def guessProjectName(self):
1042        for p in self.depotPaths:
1043            if p.endswith("/"):
1044                p = p[:-1]
1045            p = p[p.strip().rfind("/") + 1:]
1046            if not p.endswith("/"):
1047               p += "/"
1048            return p
1049
1050    def getBranchMapping(self):
1051        lostAndFoundBranches = set()
1052
1053        for info in p4CmdList("branches"):
1054            details = p4Cmd("branch -o %s" % info["branch"])
1055            viewIdx = 0
1056            while details.has_key("View%s" % viewIdx):
1057                paths = details["View%s" % viewIdx].split(" ")
1058                viewIdx = viewIdx + 1
1059                # require standard //depot/foo/... //depot/bar/... mapping
1060                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1061                    continue
1062                source = paths[0]
1063                destination = paths[1]
1064                ## HACK
1065                if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
1066                    source = source[len(self.depotPaths[0]):-4]
1067                    destination = destination[len(self.depotPaths[0]):-4]
1068
1069                    if destination in self.knownBranches:
1070                        if not self.silent:
1071                            print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1072                            print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1073                        continue
1074
1075                    self.knownBranches[destination] = source
1076
1077                    lostAndFoundBranches.discard(destination)
1078
1079                    if source not in self.knownBranches:
1080                        lostAndFoundBranches.add(source)
1081
1082
1083        for branch in lostAndFoundBranches:
1084            self.knownBranches[branch] = branch
1085
1086    def listExistingP4GitBranches(self):
1087        # branches holds mapping from name to commit
1088        branches = p4BranchesInGit(self.importIntoRemotes)
1089        self.p4BranchesInGit = branches.keys()
1090        for branch in branches.keys():
1091            self.initialParents[self.refPrefix + branch] = branches[branch]
1092
1093    def updateOptionDict(self, d):
1094        option_keys = {}
1095        if self.keepRepoPath:
1096            option_keys['keepRepoPath'] = 1
1097
1098        d["options"] = ' '.join(sorted(option_keys.keys()))
1099
1100    def readOptions(self, d):
1101        self.keepRepoPath = (d.has_key('options')
1102                             and ('keepRepoPath' in d['options']))
1103
1104    def run(self, args):
1105        self.depotPaths = []
1106        self.changeRange = ""
1107        self.initialParent = ""
1108        self.previousDepotPaths = []
1109
1110        # map from branch depot path to parent branch
1111        self.knownBranches = {}
1112        self.initialParents = {}
1113        self.hasOrigin = originP4BranchesExist()
1114        if not self.syncWithOrigin:
1115            self.hasOrigin = False
1116
1117        if self.importIntoRemotes:
1118            self.refPrefix = "refs/remotes/p4/"
1119        else:
1120            self.refPrefix = "refs/heads/p4/"
1121
1122        if self.syncWithOrigin and self.hasOrigin:
1123            if not self.silent:
1124                print "Syncing with origin first by calling git fetch origin"
1125            system("git fetch origin")
1126
1127        if len(self.branch) == 0:
1128            self.branch = self.refPrefix + "master"
1129            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1130                system("git update-ref %s refs/heads/p4" % self.branch)
1131                system("git branch -D p4");
1132            # create it /after/ importing, when master exists
1133            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
1134                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1135
1136        # TODO: should always look at previous commits,
1137        # merge with previous imports, if possible.
1138        if args == []:
1139            if self.hasOrigin:
1140                createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
1141            self.listExistingP4GitBranches()
1142
1143            if len(self.p4BranchesInGit) > 1:
1144                if not self.silent:
1145                    print "Importing from/into multiple branches"
1146                self.detectBranches = True
1147
1148            if self.verbose:
1149                print "branches: %s" % self.p4BranchesInGit
1150
1151            p4Change = 0
1152            for branch in self.p4BranchesInGit:
1153                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1154
1155                settings = extractSettingsGitLog(logMsg)
1156
1157                self.readOptions(settings)
1158                if (settings.has_key('depot-paths')
1159                    and settings.has_key ('change')):
1160                    change = int(settings['change']) + 1
1161                    p4Change = max(p4Change, change)
1162
1163                    depotPaths = sorted(settings['depot-paths'])
1164                    if self.previousDepotPaths == []:
1165                        self.previousDepotPaths = depotPaths
1166                    else:
1167                        paths = []
1168                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1169                            for i in range(0, min(len(cur), len(prev))):
1170                                if cur[i] <> prev[i]:
1171                                    i = i - 1
1172                                    break
1173
1174                            paths.append (cur[:i + 1])
1175
1176                        self.previousDepotPaths = paths
1177
1178            if p4Change > 0:
1179                self.depotPaths = sorted(self.previousDepotPaths)
1180                self.changeRange = "@%s,#head" % p4Change
1181                if not self.detectBranches:
1182                    self.initialParent = parseRevision(self.branch)
1183                if not self.silent and not self.detectBranches:
1184                    print "Performing incremental import into %s git branch" % self.branch
1185
1186        if not self.branch.startswith("refs/"):
1187            self.branch = "refs/heads/" + self.branch
1188
1189        if len(args) == 0 and self.depotPaths:
1190            if not self.silent:
1191                print "Depot paths: %s" % ' '.join(self.depotPaths)
1192        else:
1193            if self.depotPaths and self.depotPaths != args:
1194                print ("previous import used depot path %s and now %s was specified. "
1195                       "This doesn't work!" % (' '.join (self.depotPaths),
1196                                               ' '.join (args)))
1197                sys.exit(1)
1198
1199            self.depotPaths = sorted(args)
1200
1201        self.revision = ""
1202        self.users = {}
1203
1204        newPaths = []
1205        for p in self.depotPaths:
1206            if p.find("@") != -1:
1207                atIdx = p.index("@")
1208                self.changeRange = p[atIdx:]
1209                if self.changeRange == "@all":
1210                    self.changeRange = ""
1211                elif ',' not in self.changeRange:
1212                    self.revision = self.changeRange
1213                    self.changeRange = ""
1214                p = p[:atIdx]
1215            elif p.find("#") != -1:
1216                hashIdx = p.index("#")
1217                self.revision = p[hashIdx:]
1218                p = p[:hashIdx]
1219            elif self.previousDepotPaths == []:
1220                self.revision = "#head"
1221
1222            p = re.sub ("\.\.\.$", "", p)
1223            if not p.endswith("/"):
1224                p += "/"
1225
1226            newPaths.append(p)
1227
1228        self.depotPaths = newPaths
1229
1230
1231        self.loadUserMapFromCache()
1232        self.labels = {}
1233        if self.detectLabels:
1234            self.getLabels();
1235
1236        if self.detectBranches:
1237            ## FIXME - what's a P4 projectName ?
1238            self.projectName = self.guessProjectName()
1239
1240            if not self.hasOrigin:
1241                self.getBranchMapping();
1242            if self.verbose:
1243                print "p4-git branches: %s" % self.p4BranchesInGit
1244                print "initial parents: %s" % self.initialParents
1245            for b in self.p4BranchesInGit:
1246                if b != "master":
1247
1248                    ## FIXME
1249                    b = b[len(self.projectName):]
1250                self.createdBranches.add(b)
1251
1252        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1253
1254        importProcess = subprocess.Popen(["git", "fast-import"],
1255                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1256                                         stderr=subprocess.PIPE);
1257        self.gitOutput = importProcess.stdout
1258        self.gitStream = importProcess.stdin
1259        self.gitError = importProcess.stderr
1260
1261        if self.revision:
1262            print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
1263
1264            details = { "user" : "git perforce import user", "time" : int(time.time()) }
1265            details["desc"] = ("Initial import of %s from the state at revision %s"
1266                               % (' '.join(self.depotPaths), self.revision))
1267            details["change"] = self.revision
1268            newestRevision = 0
1269
1270            fileCnt = 0
1271            for info in p4CmdList("files "
1272                                  +  ' '.join(["%s...%s"
1273                                               % (p, self.revision)
1274                                               for p in self.depotPaths])):
1275
1276                if info['code'] == 'error':
1277                    sys.stderr.write("p4 returned an error: %s\n"
1278                                     % info['data'])
1279                    sys.exit(1)
1280
1281
1282                change = int(info["change"])
1283                if change > newestRevision:
1284                    newestRevision = change
1285
1286                if info["action"] == "delete":
1287                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1288                    #fileCnt = fileCnt + 1
1289                    continue
1290
1291                for prop in ["depotFile", "rev", "action", "type" ]:
1292                    details["%s%s" % (prop, fileCnt)] = info[prop]
1293
1294                fileCnt = fileCnt + 1
1295
1296            details["change"] = newestRevision
1297            self.updateOptionDict(details)
1298            try:
1299                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1300            except IOError:
1301                print "IO error with git fast-import. Is your git version recent enough?"
1302                print self.gitError.read()
1303
1304        else:
1305            changes = []
1306
1307            if len(self.changesFile) > 0:
1308                output = open(self.changesFile).readlines()
1309                changeSet = Set()
1310                for line in output:
1311                    changeSet.add(int(line))
1312
1313                for change in changeSet:
1314                    changes.append(change)
1315
1316                changes.sort()
1317            else:
1318                if self.verbose:
1319                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1320                                                              self.changeRange)
1321                assert self.depotPaths
1322                output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1323                                                                    for p in self.depotPaths]))
1324
1325                for line in output:
1326                    changeNum = line.split(" ")[1]
1327                    changes.append(int(changeNum))
1328
1329                changes.sort()
1330
1331                if len(self.maxChanges) > 0:
1332                    changes = changes[:min(int(self.maxChanges), len(changes))]
1333
1334            if len(changes) == 0:
1335                if not self.silent:
1336                    print "No changes to import!"
1337                return True
1338
1339            if not self.silent and not self.detectBranches:
1340                print "Import destination: %s" % self.branch
1341
1342            self.updatedBranches = set()
1343
1344            cnt = 1
1345            for change in changes:
1346                description = p4Cmd("describe %s" % change)
1347                self.updateOptionDict(description)
1348
1349                if not self.silent:
1350                    sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1351                    sys.stdout.flush()
1352                cnt = cnt + 1
1353
1354                try:
1355                    if self.detectBranches:
1356                        branches = self.splitFilesIntoBranches(description)
1357                        for branch in branches.keys():
1358                            ## HACK  --hwn
1359                            branchPrefix = self.depotPaths[0] + branch + "/"
1360
1361                            parent = ""
1362
1363                            filesForCommit = branches[branch]
1364
1365                            if self.verbose:
1366                                print "branch is %s" % branch
1367
1368                            self.updatedBranches.add(branch)
1369
1370                            if branch not in self.createdBranches:
1371                                self.createdBranches.add(branch)
1372                                parent = self.knownBranches[branch]
1373                                if parent == branch:
1374                                    parent = ""
1375                                elif self.verbose:
1376                                    print "parent determined through known branches: %s" % parent
1377
1378                            # main branch? use master
1379                            if branch == "main":
1380                                branch = "master"
1381                            else:
1382
1383                                ## FIXME
1384                                branch = self.projectName + branch
1385
1386                            if parent == "main":
1387                                parent = "master"
1388                            elif len(parent) > 0:
1389                                ## FIXME
1390                                parent = self.projectName + parent
1391
1392                            branch = self.refPrefix + branch
1393                            if len(parent) > 0:
1394                                parent = self.refPrefix + parent
1395
1396                            if self.verbose:
1397                                print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1398
1399                            if len(parent) == 0 and branch in self.initialParents:
1400                                parent = self.initialParents[branch]
1401                                del self.initialParents[branch]
1402
1403                            self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1404                    else:
1405                        files = self.extractFilesFromCommit(description)
1406                        self.commit(description, files, self.branch, self.depotPaths,
1407                                    self.initialParent)
1408                        self.initialParent = ""
1409                except IOError:
1410                    print self.gitError.read()
1411                    sys.exit(1)
1412
1413            if not self.silent:
1414                print ""
1415                if len(self.updatedBranches) > 0:
1416                    sys.stdout.write("Updated branches: ")
1417                    for b in self.updatedBranches:
1418                        sys.stdout.write("%s " % b)
1419                    sys.stdout.write("\n")
1420
1421
1422        self.gitStream.close()
1423        if importProcess.wait() != 0:
1424            die("fast-import failed: %s" % self.gitError.read())
1425        self.gitOutput.close()
1426        self.gitError.close()
1427
1428        return True
1429
1430class P4Rebase(Command):
1431    def __init__(self):
1432        Command.__init__(self)
1433        self.options = [ ]
1434        self.description = ("Fetches the latest revision from perforce and "
1435                            + "rebases the current work (branch) against it")
1436        self.verbose = False
1437
1438    def run(self, args):
1439        sync = P4Sync()
1440        sync.run([])
1441
1442        [upstream, settings] = findUpstreamBranchPoint()
1443        if len(upstream) == 0:
1444            die("Cannot find upstream branchpoint for rebase")
1445
1446        # the branchpoint may be p4/foo~3, so strip off the parent
1447        upstream = re.sub("~[0-9]+$", "", upstream)
1448
1449        print "Rebasing the current branch onto %s" % upstream
1450        oldHead = read_pipe("git rev-parse HEAD").strip()
1451        system("git rebase %s" % upstream)
1452        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1453        return True
1454
1455class P4Clone(P4Sync):
1456    def __init__(self):
1457        P4Sync.__init__(self)
1458        self.description = "Creates a new git repository and imports from Perforce into it"
1459        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1460        self.options.append(
1461            optparse.make_option("--destination", dest="cloneDestination",
1462                                 action='store', default=None,
1463                                 help="where to leave result of the clone"))
1464        self.cloneDestination = None
1465        self.needsGit = False
1466
1467    def defaultDestination(self, args):
1468        ## TODO: use common prefix of args?
1469        depotPath = args[0]
1470        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1471        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1472        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1473        depotDir = re.sub(r"/$", "", depotDir)
1474        return os.path.split(depotDir)[1]
1475
1476    def run(self, args):
1477        if len(args) < 1:
1478            return False
1479
1480        if self.keepRepoPath and not self.cloneDestination:
1481            sys.stderr.write("Must specify destination for --keep-path\n")
1482            sys.exit(1)
1483
1484        depotPaths = args
1485
1486        if not self.cloneDestination and len(depotPaths) > 1:
1487            self.cloneDestination = depotPaths[-1]
1488            depotPaths = depotPaths[:-1]
1489
1490        for p in depotPaths:
1491            if not p.startswith("//"):
1492                return False
1493
1494        if not self.cloneDestination:
1495            self.cloneDestination = self.defaultDestination(args)
1496
1497        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1498        if not os.path.exists(self.cloneDestination):
1499            os.makedirs(self.cloneDestination)
1500        os.chdir(self.cloneDestination)
1501        system("git init")
1502        self.gitdir = os.getcwd() + "/.git"
1503        if not P4Sync.run(self, depotPaths):
1504            return False
1505        if self.branch != "master":
1506            if gitBranchExists("refs/remotes/p4/master"):
1507                system("git branch master refs/remotes/p4/master")
1508                system("git checkout -f")
1509            else:
1510                print "Could not detect main branch. No checkout/master branch created."
1511
1512        return True
1513
1514class P4Branches(Command):
1515    def __init__(self):
1516        Command.__init__(self)
1517        self.options = [ ]
1518        self.description = ("Shows the git branches that hold imports and their "
1519                            + "corresponding perforce depot paths")
1520        self.verbose = False
1521
1522    def run(self, args):
1523        if originP4BranchesExist():
1524            createOrUpdateBranchesFromOrigin()
1525
1526        cmdline = "git rev-parse --symbolic "
1527        cmdline += " --remotes"
1528
1529        for line in read_pipe_lines(cmdline):
1530            line = line.strip()
1531
1532            if not line.startswith('p4/') or line == "p4/HEAD":
1533                continue
1534            branch = line
1535
1536            log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1537            settings = extractSettingsGitLog(log)
1538
1539            print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1540        return True
1541
1542class HelpFormatter(optparse.IndentedHelpFormatter):
1543    def __init__(self):
1544        optparse.IndentedHelpFormatter.__init__(self)
1545
1546    def format_description(self, description):
1547        if description:
1548            return description + "\n"
1549        else:
1550            return ""
1551
1552def printUsage(commands):
1553    print "usage: %s <command> [options]" % sys.argv[0]
1554    print ""
1555    print "valid commands: %s" % ", ".join(commands)
1556    print ""
1557    print "Try %s <command> --help for command specific help." % sys.argv[0]
1558    print ""
1559
1560commands = {
1561    "debug" : P4Debug,
1562    "submit" : P4Submit,
1563    "sync" : P4Sync,
1564    "rebase" : P4Rebase,
1565    "clone" : P4Clone,
1566    "rollback" : P4RollBack,
1567    "branches" : P4Branches
1568}
1569
1570
1571def main():
1572    if len(sys.argv[1:]) == 0:
1573        printUsage(commands.keys())
1574        sys.exit(2)
1575
1576    cmd = ""
1577    cmdName = sys.argv[1]
1578    try:
1579        klass = commands[cmdName]
1580        cmd = klass()
1581    except KeyError:
1582        print "unknown command %s" % cmdName
1583        print ""
1584        printUsage(commands.keys())
1585        sys.exit(2)
1586
1587    options = cmd.options
1588    cmd.gitdir = os.environ.get("GIT_DIR", None)
1589
1590    args = sys.argv[2:]
1591
1592    if len(options) > 0:
1593        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1594
1595        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1596                                       options,
1597                                       description = cmd.description,
1598                                       formatter = HelpFormatter())
1599
1600        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1601    global verbose
1602    verbose = cmd.verbose
1603    if cmd.needsGit:
1604        if cmd.gitdir == None:
1605            cmd.gitdir = os.path.abspath(".git")
1606            if not isValidGitDir(cmd.gitdir):
1607                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1608                if os.path.exists(cmd.gitdir):
1609                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1610                    if len(cdup) > 0:
1611                        os.chdir(cdup);
1612
1613        if not isValidGitDir(cmd.gitdir):
1614            if isValidGitDir(cmd.gitdir + "/.git"):
1615                cmd.gitdir += "/.git"
1616            else:
1617                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1618
1619        os.environ["GIT_DIR"] = cmd.gitdir
1620
1621    if not cmd.run(args):
1622        parser.print_help()
1623
1624
1625if __name__ == '__main__':
1626    main()