Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit Merge branch 'master' of git://git.kernel.org/pub/scm/gitk/gitk (04d70be)
   1#!/usr/bin/env python
   2#
   3# git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4#
   5# Author: Simon Hausmann <simon@lst.de>
   6# Copyright: 2007 Simon Hausmann <simon@lst.de>
   7#            2007 Trolltech ASA
   8# License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9#
  10
  11import optparse, sys, os, marshal, popen2, subprocess, shelve
  12import tempfile, getopt, sha, os.path, time, platform
  13import re
  14
  15from sets import Set;
  16
  17verbose = False
  18
  19def die(msg):
  20    if verbose:
  21        raise Exception(msg)
  22    else:
  23        sys.stderr.write(msg + "\n")
  24        sys.exit(1)
  25
  26def write_pipe(c, str):
  27    if verbose:
  28        sys.stderr.write('Writing pipe: %s\n' % c)
  29
  30    pipe = os.popen(c, 'w')
  31    val = pipe.write(str)
  32    if pipe.close():
  33        die('Command failed: %s' % c)
  34
  35    return val
  36
  37def read_pipe(c, ignore_error=False):
  38    if verbose:
  39        sys.stderr.write('Reading pipe: %s\n' % c)
  40
  41    pipe = os.popen(c, 'rb')
  42    val = pipe.read()
  43    if pipe.close() and not ignore_error:
  44        die('Command failed: %s' % c)
  45
  46    return val
  47
  48
  49def read_pipe_lines(c):
  50    if verbose:
  51        sys.stderr.write('Reading pipe: %s\n' % c)
  52    ## todo: check return status
  53    pipe = os.popen(c, 'rb')
  54    val = pipe.readlines()
  55    if pipe.close():
  56        die('Command failed: %s' % c)
  57
  58    return val
  59
  60def system(cmd):
  61    if verbose:
  62        sys.stderr.write("executing %s\n" % cmd)
  63    if os.system(cmd) != 0:
  64        die("command failed: %s" % cmd)
  65
  66def p4CmdList(cmd, stdin=None, stdin_mode='w+b'):
  67    cmd = "p4 -G %s" % cmd
  68    if verbose:
  69        sys.stderr.write("Opening pipe: %s\n" % cmd)
  70
  71    # Use a temporary file to avoid deadlocks without
  72    # subprocess.communicate(), which would put another copy
  73    # of stdout into memory.
  74    stdin_file = None
  75    if stdin is not None:
  76        stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
  77        stdin_file.write(stdin)
  78        stdin_file.flush()
  79        stdin_file.seek(0)
  80
  81    p4 = subprocess.Popen(cmd, shell=True,
  82                          stdin=stdin_file,
  83                          stdout=subprocess.PIPE)
  84
  85    result = []
  86    try:
  87        while True:
  88            entry = marshal.load(p4.stdout)
  89            result.append(entry)
  90    except EOFError:
  91        pass
  92    exitCode = p4.wait()
  93    if exitCode != 0:
  94        entry = {}
  95        entry["p4ExitCode"] = exitCode
  96        result.append(entry)
  97
  98    return result
  99
 100def p4Cmd(cmd):
 101    list = p4CmdList(cmd)
 102    result = {}
 103    for entry in list:
 104        result.update(entry)
 105    return result;
 106
 107def p4Where(depotPath):
 108    if not depotPath.endswith("/"):
 109        depotPath += "/"
 110    output = p4Cmd("where %s..." % depotPath)
 111    if output["code"] == "error":
 112        return ""
 113    clientPath = ""
 114    if "path" in output:
 115        clientPath = output.get("path")
 116    elif "data" in output:
 117        data = output.get("data")
 118        lastSpace = data.rfind(" ")
 119        clientPath = data[lastSpace + 1:]
 120
 121    if clientPath.endswith("..."):
 122        clientPath = clientPath[:-3]
 123    return clientPath
 124
 125def currentGitBranch():
 126    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 127
 128def isValidGitDir(path):
 129    if (os.path.exists(path + "/HEAD")
 130        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 131        return True;
 132    return False
 133
 134def parseRevision(ref):
 135    return read_pipe("git rev-parse %s" % ref).strip()
 136
 137def extractLogMessageFromGitCommit(commit):
 138    logMessage = ""
 139
 140    ## fixme: title is first line of commit, not 1st paragraph.
 141    foundTitle = False
 142    for log in read_pipe_lines("git cat-file commit %s" % commit):
 143       if not foundTitle:
 144           if len(log) == 1:
 145               foundTitle = True
 146           continue
 147
 148       logMessage += log
 149    return logMessage
 150
 151def extractSettingsGitLog(log):
 152    values = {}
 153    for line in log.split("\n"):
 154        line = line.strip()
 155        m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 156        if not m:
 157            continue
 158
 159        assignments = m.group(1).split (':')
 160        for a in assignments:
 161            vals = a.split ('=')
 162            key = vals[0].strip()
 163            val = ('='.join (vals[1:])).strip()
 164            if val.endswith ('\"') and val.startswith('"'):
 165                val = val[1:-1]
 166
 167            values[key] = val
 168
 169    paths = values.get("depot-paths")
 170    if not paths:
 171        paths = values.get("depot-path")
 172    if paths:
 173        values['depot-paths'] = paths.split(',')
 174    return values
 175
 176def gitBranchExists(branch):
 177    proc = subprocess.Popen(["git", "rev-parse", branch],
 178                            stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 179    return proc.wait() == 0;
 180
 181def gitConfig(key):
 182    return read_pipe("git config %s" % key, ignore_error=True).strip()
 183
 184def p4BranchesInGit(branchesAreInRemotes = True):
 185    branches = {}
 186
 187    cmdline = "git rev-parse --symbolic "
 188    if branchesAreInRemotes:
 189        cmdline += " --remotes"
 190    else:
 191        cmdline += " --branches"
 192
 193    for line in read_pipe_lines(cmdline):
 194        line = line.strip()
 195
 196        ## only import to p4/
 197        if not line.startswith('p4/') or line == "p4/HEAD":
 198            continue
 199        branch = line
 200
 201        # strip off p4
 202        branch = re.sub ("^p4/", "", line)
 203
 204        branches[branch] = parseRevision(line)
 205    return branches
 206
 207def findUpstreamBranchPoint(head = "HEAD"):
 208    branches = p4BranchesInGit()
 209    # map from depot-path to branch name
 210    branchByDepotPath = {}
 211    for branch in branches.keys():
 212        tip = branches[branch]
 213        log = extractLogMessageFromGitCommit(tip)
 214        settings = extractSettingsGitLog(log)
 215        if settings.has_key("depot-paths"):
 216            paths = ",".join(settings["depot-paths"])
 217            branchByDepotPath[paths] = "remotes/p4/" + branch
 218
 219    settings = None
 220    parent = 0
 221    while parent < 65535:
 222        commit = head + "~%s" % parent
 223        log = extractLogMessageFromGitCommit(commit)
 224        settings = extractSettingsGitLog(log)
 225        if settings.has_key("depot-paths"):
 226            paths = ",".join(settings["depot-paths"])
 227            if branchByDepotPath.has_key(paths):
 228                return [branchByDepotPath[paths], settings]
 229
 230        parent = parent + 1
 231
 232    return ["", settings]
 233
 234class Command:
 235    def __init__(self):
 236        self.usage = "usage: %prog [options]"
 237        self.needsGit = True
 238
 239class P4Debug(Command):
 240    def __init__(self):
 241        Command.__init__(self)
 242        self.options = [
 243            optparse.make_option("--verbose", dest="verbose", action="store_true",
 244                                 default=False),
 245            ]
 246        self.description = "A tool to debug the output of p4 -G."
 247        self.needsGit = False
 248        self.verbose = False
 249
 250    def run(self, args):
 251        j = 0
 252        for output in p4CmdList(" ".join(args)):
 253            print 'Element: %d' % j
 254            j += 1
 255            print output
 256        return True
 257
 258class P4RollBack(Command):
 259    def __init__(self):
 260        Command.__init__(self)
 261        self.options = [
 262            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 263            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 264        ]
 265        self.description = "A tool to debug the multi-branch import. Don't use :)"
 266        self.verbose = False
 267        self.rollbackLocalBranches = False
 268
 269    def run(self, args):
 270        if len(args) != 1:
 271            return False
 272        maxChange = int(args[0])
 273
 274        if "p4ExitCode" in p4Cmd("changes -m 1"):
 275            die("Problems executing p4");
 276
 277        if self.rollbackLocalBranches:
 278            refPrefix = "refs/heads/"
 279            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 280        else:
 281            refPrefix = "refs/remotes/"
 282            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 283
 284        for line in lines:
 285            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 286                line = line.strip()
 287                ref = refPrefix + line
 288                log = extractLogMessageFromGitCommit(ref)
 289                settings = extractSettingsGitLog(log)
 290
 291                depotPaths = settings['depot-paths']
 292                change = settings['change']
 293
 294                changed = False
 295
 296                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 297                                                           for p in depotPaths]))) == 0:
 298                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 299                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 300                    continue
 301
 302                while change and int(change) > maxChange:
 303                    changed = True
 304                    if self.verbose:
 305                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 306                    system("git update-ref %s \"%s^\"" % (ref, ref))
 307                    log = extractLogMessageFromGitCommit(ref)
 308                    settings =  extractSettingsGitLog(log)
 309
 310
 311                    depotPaths = settings['depot-paths']
 312                    change = settings['change']
 313
 314                if changed:
 315                    print "%s rewound to %s" % (ref, change)
 316
 317        return True
 318
 319class P4Submit(Command):
 320    def __init__(self):
 321        Command.__init__(self)
 322        self.options = [
 323                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 324                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 325                optparse.make_option("--origin", dest="origin"),
 326                optparse.make_option("--reset", action="store_true", dest="reset"),
 327                optparse.make_option("--log-substitutions", dest="substFile"),
 328                optparse.make_option("--dry-run", action="store_true"),
 329                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 330                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 331        ]
 332        self.description = "Submit changes from git to the perforce depot."
 333        self.usage += " [name of git branch to submit into perforce depot]"
 334        self.firstTime = True
 335        self.reset = False
 336        self.interactive = True
 337        self.dryRun = False
 338        self.substFile = ""
 339        self.firstTime = True
 340        self.origin = ""
 341        self.directSubmit = False
 342        self.trustMeLikeAFool = False
 343        self.verbose = False
 344        self.isWindows = (platform.system() == "Windows")
 345
 346        self.logSubstitutions = {}
 347        self.logSubstitutions["<enter description here>"] = "%log%"
 348        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 349
 350    def check(self):
 351        if len(p4CmdList("opened ...")) > 0:
 352            die("You have files opened with perforce! Close them before starting the sync.")
 353
 354    def start(self):
 355        if len(self.config) > 0 and not self.reset:
 356            die("Cannot start sync. Previous sync config found at %s\n"
 357                "If you want to start submitting again from scratch "
 358                "maybe you want to call git-p4 submit --reset" % self.configFile)
 359
 360        commits = []
 361        if self.directSubmit:
 362            commits.append("0")
 363        else:
 364            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 365                commits.append(line.strip())
 366            commits.reverse()
 367
 368        self.config["commits"] = commits
 369
 370    def prepareLogMessage(self, template, message):
 371        result = ""
 372
 373        for line in template.split("\n"):
 374            if line.startswith("#"):
 375                result += line + "\n"
 376                continue
 377
 378            substituted = False
 379            for key in self.logSubstitutions.keys():
 380                if line.find(key) != -1:
 381                    value = self.logSubstitutions[key]
 382                    value = value.replace("%log%", message)
 383                    if value != "@remove@":
 384                        result += line.replace(key, value) + "\n"
 385                    substituted = True
 386                    break
 387
 388            if not substituted:
 389                result += line + "\n"
 390
 391        return result
 392
 393    def prepareSubmitTemplate(self):
 394        # remove lines in the Files section that show changes to files outside the depot path we're committing into
 395        template = ""
 396        inFilesSection = False
 397        for line in read_pipe_lines("p4 change -o"):
 398            if inFilesSection:
 399                if line.startswith("\t"):
 400                    # path starts and ends with a tab
 401                    path = line[1:]
 402                    lastTab = path.rfind("\t")
 403                    if lastTab != -1:
 404                        path = path[:lastTab]
 405                        if not path.startswith(self.depotPath):
 406                            continue
 407                else:
 408                    inFilesSection = False
 409            else:
 410                if line.startswith("Files:"):
 411                    inFilesSection = True
 412
 413            template += line
 414
 415        return template
 416
 417    def applyCommit(self, id):
 418        if self.directSubmit:
 419            print "Applying local change in working directory/index"
 420            diff = self.diffStatus
 421        else:
 422            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 423            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 424        filesToAdd = set()
 425        filesToDelete = set()
 426        editedFiles = set()
 427        for line in diff:
 428            modifier = line[0]
 429            path = line[1:].strip()
 430            if modifier == "M":
 431                system("p4 edit \"%s\"" % path)
 432                editedFiles.add(path)
 433            elif modifier == "A":
 434                filesToAdd.add(path)
 435                if path in filesToDelete:
 436                    filesToDelete.remove(path)
 437            elif modifier == "D":
 438                filesToDelete.add(path)
 439                if path in filesToAdd:
 440                    filesToAdd.remove(path)
 441            else:
 442                die("unknown modifier %s for %s" % (modifier, path))
 443
 444        if self.directSubmit:
 445            diffcmd = "cat \"%s\"" % self.diffFile
 446        else:
 447            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 448        patchcmd = diffcmd + " | git apply "
 449        tryPatchCmd = patchcmd + "--check -"
 450        applyPatchCmd = patchcmd + "--check --apply -"
 451
 452        if os.system(tryPatchCmd) != 0:
 453            print "Unfortunately applying the change failed!"
 454            print "What do you want to do?"
 455            response = "x"
 456            while response != "s" and response != "a" and response != "w":
 457                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 458                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 459            if response == "s":
 460                print "Skipping! Good luck with the next patches..."
 461                return
 462            elif response == "a":
 463                os.system(applyPatchCmd)
 464                if len(filesToAdd) > 0:
 465                    print "You may also want to call p4 add on the following files:"
 466                    print " ".join(filesToAdd)
 467                if len(filesToDelete):
 468                    print "The following files should be scheduled for deletion with p4 delete:"
 469                    print " ".join(filesToDelete)
 470                die("Please resolve and submit the conflict manually and "
 471                    + "continue afterwards with git-p4 submit --continue")
 472            elif response == "w":
 473                system(diffcmd + " > patch.txt")
 474                print "Patch saved to patch.txt in %s !" % self.clientPath
 475                die("Please resolve and submit the conflict manually and "
 476                    "continue afterwards with git-p4 submit --continue")
 477
 478        system(applyPatchCmd)
 479
 480        for f in filesToAdd:
 481            system("p4 add \"%s\"" % f)
 482        for f in filesToDelete:
 483            system("p4 revert \"%s\"" % f)
 484            system("p4 delete \"%s\"" % f)
 485
 486        logMessage = ""
 487        if not self.directSubmit:
 488            logMessage = extractLogMessageFromGitCommit(id)
 489            logMessage = logMessage.replace("\n", "\n\t")
 490            if self.isWindows:
 491                logMessage = logMessage.replace("\n", "\r\n")
 492            logMessage = logMessage.strip()
 493
 494        template = self.prepareSubmitTemplate()
 495
 496        if self.interactive:
 497            submitTemplate = self.prepareLogMessage(template, logMessage)
 498            diff = read_pipe("p4 diff -du ...")
 499
 500            for newFile in filesToAdd:
 501                diff += "==== new file ====\n"
 502                diff += "--- /dev/null\n"
 503                diff += "+++ %s\n" % newFile
 504                f = open(newFile, "r")
 505                for line in f.readlines():
 506                    diff += "+" + line
 507                f.close()
 508
 509            separatorLine = "######## everything below this line is just the diff #######"
 510            if platform.system() == "Windows":
 511                separatorLine += "\r"
 512            separatorLine += "\n"
 513
 514            response = "e"
 515            if self.trustMeLikeAFool:
 516                response = "y"
 517
 518            firstIteration = True
 519            while response == "e":
 520                if not firstIteration:
 521                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 522                firstIteration = False
 523                if response == "e":
 524                    [handle, fileName] = tempfile.mkstemp()
 525                    tmpFile = os.fdopen(handle, "w+")
 526                    tmpFile.write(submitTemplate + separatorLine + diff)
 527                    tmpFile.close()
 528                    defaultEditor = "vi"
 529                    if platform.system() == "Windows":
 530                        defaultEditor = "notepad"
 531                    editor = os.environ.get("EDITOR", defaultEditor);
 532                    system(editor + " " + fileName)
 533                    tmpFile = open(fileName, "rb")
 534                    message = tmpFile.read()
 535                    tmpFile.close()
 536                    os.remove(fileName)
 537                    submitTemplate = message[:message.index(separatorLine)]
 538                    if self.isWindows:
 539                        submitTemplate = submitTemplate.replace("\r\n", "\n")
 540
 541            if response == "y" or response == "yes":
 542               if self.dryRun:
 543                   print submitTemplate
 544                   raw_input("Press return to continue...")
 545               else:
 546                   if self.directSubmit:
 547                       print "Submitting to git first"
 548                       os.chdir(self.oldWorkingDirectory)
 549                       write_pipe("git commit -a -F -", submitTemplate)
 550                       os.chdir(self.clientPath)
 551
 552                   write_pipe("p4 submit -i", submitTemplate)
 553            elif response == "s":
 554                for f in editedFiles:
 555                    system("p4 revert \"%s\"" % f);
 556                for f in filesToAdd:
 557                    system("p4 revert \"%s\"" % f);
 558                    system("rm %s" %f)
 559                for f in filesToDelete:
 560                    system("p4 delete \"%s\"" % f);
 561                return
 562            else:
 563                print "Not submitting!"
 564                self.interactive = False
 565        else:
 566            fileName = "submit.txt"
 567            file = open(fileName, "w+")
 568            file.write(self.prepareLogMessage(template, logMessage))
 569            file.close()
 570            print ("Perforce submit template written as %s. "
 571                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 572                   % (fileName, fileName))
 573
 574    def run(self, args):
 575        if len(args) == 0:
 576            self.master = currentGitBranch()
 577            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 578                die("Detecting current git branch failed!")
 579        elif len(args) == 1:
 580            self.master = args[0]
 581        else:
 582            return False
 583
 584        [upstream, settings] = findUpstreamBranchPoint()
 585        self.depotPath = settings['depot-paths'][0]
 586        if len(self.origin) == 0:
 587            self.origin = upstream
 588
 589        if self.verbose:
 590            print "Origin branch is " + self.origin
 591
 592        if len(self.depotPath) == 0:
 593            print "Internal error: cannot locate perforce depot path from existing branches"
 594            sys.exit(128)
 595
 596        self.clientPath = p4Where(self.depotPath)
 597
 598        if len(self.clientPath) == 0:
 599            print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
 600            sys.exit(128)
 601
 602        print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
 603        self.oldWorkingDirectory = os.getcwd()
 604
 605        if self.directSubmit:
 606            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 607            if len(self.diffStatus) == 0:
 608                print "No changes in working directory to submit."
 609                return True
 610            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 611            self.diffFile = self.gitdir + "/p4-git-diff"
 612            f = open(self.diffFile, "wb")
 613            f.write(patch)
 614            f.close();
 615
 616        os.chdir(self.clientPath)
 617        response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 618        if response == "y" or response == "yes":
 619            system("p4 sync ...")
 620
 621        if self.reset:
 622            self.firstTime = True
 623
 624        if len(self.substFile) > 0:
 625            for line in open(self.substFile, "r").readlines():
 626                tokens = line.strip().split("=")
 627                self.logSubstitutions[tokens[0]] = tokens[1]
 628
 629        self.check()
 630        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 631        self.config = shelve.open(self.configFile, writeback=True)
 632
 633        if self.firstTime:
 634            self.start()
 635
 636        commits = self.config.get("commits", [])
 637
 638        while len(commits) > 0:
 639            self.firstTime = False
 640            commit = commits[0]
 641            commits = commits[1:]
 642            self.config["commits"] = commits
 643            self.applyCommit(commit)
 644            if not self.interactive:
 645                break
 646
 647        self.config.close()
 648
 649        if self.directSubmit:
 650            os.remove(self.diffFile)
 651
 652        if len(commits) == 0:
 653            if self.firstTime:
 654                print "No changes found to apply between %s and current HEAD" % self.origin
 655            else:
 656                print "All changes applied!"
 657                os.chdir(self.oldWorkingDirectory)
 658                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 659                if response == "y" or response == "yes":
 660                    rebase = P4Rebase()
 661                    rebase.run([])
 662            os.remove(self.configFile)
 663
 664        return True
 665
 666class P4Sync(Command):
 667    def __init__(self):
 668        Command.__init__(self)
 669        self.options = [
 670                optparse.make_option("--branch", dest="branch"),
 671                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 672                optparse.make_option("--changesfile", dest="changesFile"),
 673                optparse.make_option("--silent", dest="silent", action="store_true"),
 674                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 675                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 676                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 677                                     help="Import into refs/heads/ , not refs/remotes"),
 678                optparse.make_option("--max-changes", dest="maxChanges"),
 679                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 680                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 681        ]
 682        self.description = """Imports from Perforce into a git repository.\n
 683    example:
 684    //depot/my/project/ -- to import the current head
 685    //depot/my/project/@all -- to import everything
 686    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 687
 688    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 689
 690        self.usage += " //depot/path[@revRange]"
 691        self.silent = False
 692        self.createdBranches = Set()
 693        self.committedChanges = Set()
 694        self.branch = ""
 695        self.detectBranches = False
 696        self.detectLabels = False
 697        self.changesFile = ""
 698        self.syncWithOrigin = True
 699        self.verbose = False
 700        self.importIntoRemotes = True
 701        self.maxChanges = ""
 702        self.isWindows = (platform.system() == "Windows")
 703        self.keepRepoPath = False
 704        self.depotPaths = None
 705        self.p4BranchesInGit = []
 706
 707        if gitConfig("git-p4.syncFromOrigin") == "false":
 708            self.syncWithOrigin = False
 709
 710    def extractFilesFromCommit(self, commit):
 711        files = []
 712        fnum = 0
 713        while commit.has_key("depotFile%s" % fnum):
 714            path =  commit["depotFile%s" % fnum]
 715
 716            found = [p for p in self.depotPaths
 717                     if path.startswith (p)]
 718            if not found:
 719                fnum = fnum + 1
 720                continue
 721
 722            file = {}
 723            file["path"] = path
 724            file["rev"] = commit["rev%s" % fnum]
 725            file["action"] = commit["action%s" % fnum]
 726            file["type"] = commit["type%s" % fnum]
 727            files.append(file)
 728            fnum = fnum + 1
 729        return files
 730
 731    def stripRepoPath(self, path, prefixes):
 732        if self.keepRepoPath:
 733            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 734
 735        for p in prefixes:
 736            if path.startswith(p):
 737                path = path[len(p):]
 738
 739        return path
 740
 741    def splitFilesIntoBranches(self, commit):
 742        branches = {}
 743        fnum = 0
 744        while commit.has_key("depotFile%s" % fnum):
 745            path =  commit["depotFile%s" % fnum]
 746            found = [p for p in self.depotPaths
 747                     if path.startswith (p)]
 748            if not found:
 749                fnum = fnum + 1
 750                continue
 751
 752            file = {}
 753            file["path"] = path
 754            file["rev"] = commit["rev%s" % fnum]
 755            file["action"] = commit["action%s" % fnum]
 756            file["type"] = commit["type%s" % fnum]
 757            fnum = fnum + 1
 758
 759            relPath = self.stripRepoPath(path, self.depotPaths)
 760
 761            for branch in self.knownBranches.keys():
 762
 763                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 764                if relPath.startswith(branch + "/"):
 765                    if branch not in branches:
 766                        branches[branch] = []
 767                    branches[branch].append(file)
 768                    break
 769
 770        return branches
 771
 772    ## Should move this out, doesn't use SELF.
 773    def readP4Files(self, files):
 774        files = [f for f in files
 775                 if f['action'] != 'delete']
 776
 777        if not files:
 778            return
 779
 780        filedata = p4CmdList('-x - print',
 781                             stdin='\n'.join(['%s#%s' % (f['path'], f['rev'])
 782                                              for f in files]),
 783                             stdin_mode='w+')
 784        if "p4ExitCode" in filedata[0]:
 785            die("Problems executing p4. Error: [%d]."
 786                % (filedata[0]['p4ExitCode']));
 787
 788        j = 0;
 789        contents = {}
 790        while j < len(filedata):
 791            stat = filedata[j]
 792            j += 1
 793            text = ''
 794            while j < len(filedata) and filedata[j]['code'] in ('text',
 795                                                                'binary'):
 796                text += filedata[j]['data']
 797                j += 1
 798
 799
 800            if not stat.has_key('depotFile'):
 801                sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 802                continue
 803
 804            contents[stat['depotFile']] = text
 805
 806        for f in files:
 807            assert not f.has_key('data')
 808            f['data'] = contents[f['path']]
 809
 810    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 811        epoch = details["time"]
 812        author = details["user"]
 813
 814        if self.verbose:
 815            print "commit into %s" % branch
 816
 817        # start with reading files; if that fails, we should not
 818        # create a commit.
 819        new_files = []
 820        for f in files:
 821            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 822                new_files.append (f)
 823            else:
 824                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 825        files = new_files
 826        self.readP4Files(files)
 827
 828
 829
 830
 831        self.gitStream.write("commit %s\n" % branch)
 832#        gitStream.write("mark :%s\n" % details["change"])
 833        self.committedChanges.add(int(details["change"]))
 834        committer = ""
 835        if author not in self.users:
 836            self.getUserMapFromPerforceServer()
 837        if author in self.users:
 838            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 839        else:
 840            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 841
 842        self.gitStream.write("committer %s\n" % committer)
 843
 844        self.gitStream.write("data <<EOT\n")
 845        self.gitStream.write(details["desc"])
 846        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
 847                             % (','.join (branchPrefixes), details["change"]))
 848        if len(details['options']) > 0:
 849            self.gitStream.write(": options = %s" % details['options'])
 850        self.gitStream.write("]\nEOT\n\n")
 851
 852        if len(parent) > 0:
 853            if self.verbose:
 854                print "parent %s" % parent
 855            self.gitStream.write("from %s\n" % parent)
 856
 857        for file in files:
 858            if file["type"] == "apple":
 859                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 860                continue
 861
 862            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 863            if file["action"] == "delete":
 864                self.gitStream.write("D %s\n" % relPath)
 865            else:
 866                data = file['data']
 867
 868                mode = "644"
 869                if file["type"].startswith("x"):
 870                    mode = "755"
 871                elif file["type"] == "symlink":
 872                    mode = "120000"
 873                    # p4 print on a symlink contains "target\n", so strip it off
 874                    data = data[:-1]
 875
 876                if self.isWindows and file["type"].endswith("text"):
 877                    data = data.replace("\r\n", "\n")
 878
 879                self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 880                self.gitStream.write("data %s\n" % len(data))
 881                self.gitStream.write(data)
 882                self.gitStream.write("\n")
 883
 884        self.gitStream.write("\n")
 885
 886        change = int(details["change"])
 887
 888        if self.labels.has_key(change):
 889            label = self.labels[change]
 890            labelDetails = label[0]
 891            labelRevisions = label[1]
 892            if self.verbose:
 893                print "Change %s is labelled %s" % (change, labelDetails)
 894
 895            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 896                                                    for p in branchPrefixes]))
 897
 898            if len(files) == len(labelRevisions):
 899
 900                cleanedFiles = {}
 901                for info in files:
 902                    if info["action"] == "delete":
 903                        continue
 904                    cleanedFiles[info["depotFile"]] = info["rev"]
 905
 906                if cleanedFiles == labelRevisions:
 907                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 908                    self.gitStream.write("from %s\n" % branch)
 909
 910                    owner = labelDetails["Owner"]
 911                    tagger = ""
 912                    if author in self.users:
 913                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 914                    else:
 915                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 916                    self.gitStream.write("tagger %s\n" % tagger)
 917                    self.gitStream.write("data <<EOT\n")
 918                    self.gitStream.write(labelDetails["Description"])
 919                    self.gitStream.write("EOT\n\n")
 920
 921                else:
 922                    if not self.silent:
 923                        print ("Tag %s does not match with change %s: files do not match."
 924                               % (labelDetails["label"], change))
 925
 926            else:
 927                if not self.silent:
 928                    print ("Tag %s does not match with change %s: file count is different."
 929                           % (labelDetails["label"], change))
 930
 931    def getUserCacheFilename(self):
 932        home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
 933        return home + "/.gitp4-usercache.txt"
 934
 935    def getUserMapFromPerforceServer(self):
 936        if self.userMapFromPerforceServer:
 937            return
 938        self.users = {}
 939
 940        for output in p4CmdList("users"):
 941            if not output.has_key("User"):
 942                continue
 943            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 944
 945
 946        s = ''
 947        for (key, val) in self.users.items():
 948            s += "%s\t%s\n" % (key, val)
 949
 950        open(self.getUserCacheFilename(), "wb").write(s)
 951        self.userMapFromPerforceServer = True
 952
 953    def loadUserMapFromCache(self):
 954        self.users = {}
 955        self.userMapFromPerforceServer = False
 956        try:
 957            cache = open(self.getUserCacheFilename(), "rb")
 958            lines = cache.readlines()
 959            cache.close()
 960            for line in lines:
 961                entry = line.strip().split("\t")
 962                self.users[entry[0]] = entry[1]
 963        except IOError:
 964            self.getUserMapFromPerforceServer()
 965
 966    def getLabels(self):
 967        self.labels = {}
 968
 969        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 970        if len(l) > 0 and not self.silent:
 971            print "Finding files belonging to labels in %s" % `self.depotPath`
 972
 973        for output in l:
 974            label = output["label"]
 975            revisions = {}
 976            newestChange = 0
 977            if self.verbose:
 978                print "Querying files for label %s" % label
 979            for file in p4CmdList("files "
 980                                  +  ' '.join (["%s...@%s" % (p, label)
 981                                                for p in self.depotPaths])):
 982                revisions[file["depotFile"]] = file["rev"]
 983                change = int(file["change"])
 984                if change > newestChange:
 985                    newestChange = change
 986
 987            self.labels[newestChange] = [output, revisions]
 988
 989        if self.verbose:
 990            print "Label changes: %s" % self.labels.keys()
 991
 992    def guessProjectName(self):
 993        for p in self.depotPaths:
 994            if p.endswith("/"):
 995                p = p[:-1]
 996            p = p[p.strip().rfind("/") + 1:]
 997            if not p.endswith("/"):
 998               p += "/"
 999            return p
1000
1001    def getBranchMapping(self):
1002        lostAndFoundBranches = set()
1003
1004        for info in p4CmdList("branches"):
1005            details = p4Cmd("branch -o %s" % info["branch"])
1006            viewIdx = 0
1007            while details.has_key("View%s" % viewIdx):
1008                paths = details["View%s" % viewIdx].split(" ")
1009                viewIdx = viewIdx + 1
1010                # require standard //depot/foo/... //depot/bar/... mapping
1011                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1012                    continue
1013                source = paths[0]
1014                destination = paths[1]
1015                ## HACK
1016                if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
1017                    source = source[len(self.depotPaths[0]):-4]
1018                    destination = destination[len(self.depotPaths[0]):-4]
1019
1020                    if destination in self.knownBranches:
1021                        if not self.silent:
1022                            print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1023                            print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1024                        continue
1025
1026                    self.knownBranches[destination] = source
1027
1028                    lostAndFoundBranches.discard(destination)
1029
1030                    if source not in self.knownBranches:
1031                        lostAndFoundBranches.add(source)
1032
1033
1034        for branch in lostAndFoundBranches:
1035            self.knownBranches[branch] = branch
1036
1037    def listExistingP4GitBranches(self):
1038        # branches holds mapping from name to commit
1039        branches = p4BranchesInGit(self.importIntoRemotes)
1040        self.p4BranchesInGit = branches.keys()
1041        for branch in branches.keys():
1042            self.initialParents[self.refPrefix + branch] = branches[branch]
1043
1044    def createOrUpdateBranchesFromOrigin(self):
1045        if not self.silent:
1046            print ("Creating/updating branch(es) in %s based on origin branch(es)"
1047                   % self.refPrefix)
1048
1049        originPrefix = "origin/p4/"
1050
1051        for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
1052            line = line.strip()
1053            if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
1054                continue
1055
1056            headName = line[len(originPrefix):]
1057            remoteHead = self.refPrefix + headName
1058            originHead = line
1059
1060            original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
1061            if (not original.has_key('depot-paths')
1062                or not original.has_key('change')):
1063                continue
1064
1065            update = False
1066            if not gitBranchExists(remoteHead):
1067                if self.verbose:
1068                    print "creating %s" % remoteHead
1069                update = True
1070            else:
1071                settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
1072                if settings.has_key('change') > 0:
1073                    if settings['depot-paths'] == original['depot-paths']:
1074                        originP4Change = int(original['change'])
1075                        p4Change = int(settings['change'])
1076                        if originP4Change > p4Change:
1077                            print ("%s (%s) is newer than %s (%s). "
1078                                   "Updating p4 branch from origin."
1079                                   % (originHead, originP4Change,
1080                                      remoteHead, p4Change))
1081                            update = True
1082                    else:
1083                        print ("Ignoring: %s was imported from %s while "
1084                               "%s was imported from %s"
1085                               % (originHead, ','.join(original['depot-paths']),
1086                                  remoteHead, ','.join(settings['depot-paths'])))
1087
1088            if update:
1089                system("git update-ref %s %s" % (remoteHead, originHead))
1090
1091    def updateOptionDict(self, d):
1092        option_keys = {}
1093        if self.keepRepoPath:
1094            option_keys['keepRepoPath'] = 1
1095
1096        d["options"] = ' '.join(sorted(option_keys.keys()))
1097
1098    def readOptions(self, d):
1099        self.keepRepoPath = (d.has_key('options')
1100                             and ('keepRepoPath' in d['options']))
1101
1102    def run(self, args):
1103        self.depotPaths = []
1104        self.changeRange = ""
1105        self.initialParent = ""
1106        self.previousDepotPaths = []
1107
1108        # map from branch depot path to parent branch
1109        self.knownBranches = {}
1110        self.initialParents = {}
1111        self.hasOrigin = gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
1112        if not self.syncWithOrigin:
1113            self.hasOrigin = False
1114
1115        if self.importIntoRemotes:
1116            self.refPrefix = "refs/remotes/p4/"
1117        else:
1118            self.refPrefix = "refs/heads/p4/"
1119
1120        if self.syncWithOrigin and self.hasOrigin:
1121            if not self.silent:
1122                print "Syncing with origin first by calling git fetch origin"
1123            system("git fetch origin")
1124
1125        if len(self.branch) == 0:
1126            self.branch = self.refPrefix + "master"
1127            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1128                system("git update-ref %s refs/heads/p4" % self.branch)
1129                system("git branch -D p4");
1130            # create it /after/ importing, when master exists
1131            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1132                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1133
1134        # TODO: should always look at previous commits,
1135        # merge with previous imports, if possible.
1136        if args == []:
1137            if self.hasOrigin:
1138                self.createOrUpdateBranchesFromOrigin()
1139            self.listExistingP4GitBranches()
1140
1141            if len(self.p4BranchesInGit) > 1:
1142                if not self.silent:
1143                    print "Importing from/into multiple branches"
1144                self.detectBranches = True
1145
1146            if self.verbose:
1147                print "branches: %s" % self.p4BranchesInGit
1148
1149            p4Change = 0
1150            for branch in self.p4BranchesInGit:
1151                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1152
1153                settings = extractSettingsGitLog(logMsg)
1154
1155                self.readOptions(settings)
1156                if (settings.has_key('depot-paths')
1157                    and settings.has_key ('change')):
1158                    change = int(settings['change']) + 1
1159                    p4Change = max(p4Change, change)
1160
1161                    depotPaths = sorted(settings['depot-paths'])
1162                    if self.previousDepotPaths == []:
1163                        self.previousDepotPaths = depotPaths
1164                    else:
1165                        paths = []
1166                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1167                            for i in range(0, min(len(cur), len(prev))):
1168                                if cur[i] <> prev[i]:
1169                                    i = i - 1
1170                                    break
1171
1172                            paths.append (cur[:i + 1])
1173
1174                        self.previousDepotPaths = paths
1175
1176            if p4Change > 0:
1177                self.depotPaths = sorted(self.previousDepotPaths)
1178                self.changeRange = "@%s,#head" % p4Change
1179                if not self.detectBranches:
1180                    self.initialParent = parseRevision(self.branch)
1181                if not self.silent and not self.detectBranches:
1182                    print "Performing incremental import into %s git branch" % self.branch
1183
1184        if not self.branch.startswith("refs/"):
1185            self.branch = "refs/heads/" + self.branch
1186
1187        if len(args) == 0 and self.depotPaths:
1188            if not self.silent:
1189                print "Depot paths: %s" % ' '.join(self.depotPaths)
1190        else:
1191            if self.depotPaths and self.depotPaths != args:
1192                print ("previous import used depot path %s and now %s was specified. "
1193                       "This doesn't work!" % (' '.join (self.depotPaths),
1194                                               ' '.join (args)))
1195                sys.exit(1)
1196
1197            self.depotPaths = sorted(args)
1198
1199        self.revision = ""
1200        self.users = {}
1201
1202        newPaths = []
1203        for p in self.depotPaths:
1204            if p.find("@") != -1:
1205                atIdx = p.index("@")
1206                self.changeRange = p[atIdx:]
1207                if self.changeRange == "@all":
1208                    self.changeRange = ""
1209                elif ',' not in self.changeRange:
1210                    self.revision = self.changeRange
1211                    self.changeRange = ""
1212                p = p[:atIdx]
1213            elif p.find("#") != -1:
1214                hashIdx = p.index("#")
1215                self.revision = p[hashIdx:]
1216                p = p[:hashIdx]
1217            elif self.previousDepotPaths == []:
1218                self.revision = "#head"
1219
1220            p = re.sub ("\.\.\.$", "", p)
1221            if not p.endswith("/"):
1222                p += "/"
1223
1224            newPaths.append(p)
1225
1226        self.depotPaths = newPaths
1227
1228
1229        self.loadUserMapFromCache()
1230        self.labels = {}
1231        if self.detectLabels:
1232            self.getLabels();
1233
1234        if self.detectBranches:
1235            ## FIXME - what's a P4 projectName ?
1236            self.projectName = self.guessProjectName()
1237
1238            if not self.hasOrigin:
1239                self.getBranchMapping();
1240            if self.verbose:
1241                print "p4-git branches: %s" % self.p4BranchesInGit
1242                print "initial parents: %s" % self.initialParents
1243            for b in self.p4BranchesInGit:
1244                if b != "master":
1245
1246                    ## FIXME
1247                    b = b[len(self.projectName):]
1248                self.createdBranches.add(b)
1249
1250        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1251
1252        importProcess = subprocess.Popen(["git", "fast-import"],
1253                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1254                                         stderr=subprocess.PIPE);
1255        self.gitOutput = importProcess.stdout
1256        self.gitStream = importProcess.stdin
1257        self.gitError = importProcess.stderr
1258
1259        if self.revision:
1260            print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
1261
1262            details = { "user" : "git perforce import user", "time" : int(time.time()) }
1263            details["desc"] = ("Initial import of %s from the state at revision %s"
1264                               % (' '.join(self.depotPaths), self.revision))
1265            details["change"] = self.revision
1266            newestRevision = 0
1267
1268            fileCnt = 0
1269            for info in p4CmdList("files "
1270                                  +  ' '.join(["%s...%s"
1271                                               % (p, self.revision)
1272                                               for p in self.depotPaths])):
1273
1274                if info['code'] == 'error':
1275                    sys.stderr.write("p4 returned an error: %s\n"
1276                                     % info['data'])
1277                    sys.exit(1)
1278
1279
1280                change = int(info["change"])
1281                if change > newestRevision:
1282                    newestRevision = change
1283
1284                if info["action"] == "delete":
1285                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1286                    #fileCnt = fileCnt + 1
1287                    continue
1288
1289                for prop in ["depotFile", "rev", "action", "type" ]:
1290                    details["%s%s" % (prop, fileCnt)] = info[prop]
1291
1292                fileCnt = fileCnt + 1
1293
1294            details["change"] = newestRevision
1295            self.updateOptionDict(details)
1296            try:
1297                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1298            except IOError:
1299                print "IO error with git fast-import. Is your git version recent enough?"
1300                print self.gitError.read()
1301
1302        else:
1303            changes = []
1304
1305            if len(self.changesFile) > 0:
1306                output = open(self.changesFile).readlines()
1307                changeSet = Set()
1308                for line in output:
1309                    changeSet.add(int(line))
1310
1311                for change in changeSet:
1312                    changes.append(change)
1313
1314                changes.sort()
1315            else:
1316                if self.verbose:
1317                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1318                                                              self.changeRange)
1319                assert self.depotPaths
1320                output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1321                                                                    for p in self.depotPaths]))
1322
1323                for line in output:
1324                    changeNum = line.split(" ")[1]
1325                    changes.append(changeNum)
1326
1327                changes.sort()
1328
1329                if len(self.maxChanges) > 0:
1330                    changes = changes[:min(int(self.maxChanges), len(changes))]
1331
1332            if len(changes) == 0:
1333                if not self.silent:
1334                    print "No changes to import!"
1335                return True
1336
1337            if not self.silent and not self.detectBranches:
1338                print "Import destination: %s" % self.branch
1339
1340            self.updatedBranches = set()
1341
1342            cnt = 1
1343            for change in changes:
1344                description = p4Cmd("describe %s" % change)
1345                self.updateOptionDict(description)
1346
1347                if not self.silent:
1348                    sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1349                    sys.stdout.flush()
1350                cnt = cnt + 1
1351
1352                try:
1353                    if self.detectBranches:
1354                        branches = self.splitFilesIntoBranches(description)
1355                        for branch in branches.keys():
1356                            ## HACK  --hwn
1357                            branchPrefix = self.depotPaths[0] + branch + "/"
1358
1359                            parent = ""
1360
1361                            filesForCommit = branches[branch]
1362
1363                            if self.verbose:
1364                                print "branch is %s" % branch
1365
1366                            self.updatedBranches.add(branch)
1367
1368                            if branch not in self.createdBranches:
1369                                self.createdBranches.add(branch)
1370                                parent = self.knownBranches[branch]
1371                                if parent == branch:
1372                                    parent = ""
1373                                elif self.verbose:
1374                                    print "parent determined through known branches: %s" % parent
1375
1376                            # main branch? use master
1377                            if branch == "main":
1378                                branch = "master"
1379                            else:
1380
1381                                ## FIXME
1382                                branch = self.projectName + branch
1383
1384                            if parent == "main":
1385                                parent = "master"
1386                            elif len(parent) > 0:
1387                                ## FIXME
1388                                parent = self.projectName + parent
1389
1390                            branch = self.refPrefix + branch
1391                            if len(parent) > 0:
1392                                parent = self.refPrefix + parent
1393
1394                            if self.verbose:
1395                                print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1396
1397                            if len(parent) == 0 and branch in self.initialParents:
1398                                parent = self.initialParents[branch]
1399                                del self.initialParents[branch]
1400
1401                            self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1402                    else:
1403                        files = self.extractFilesFromCommit(description)
1404                        self.commit(description, files, self.branch, self.depotPaths,
1405                                    self.initialParent)
1406                        self.initialParent = ""
1407                except IOError:
1408                    print self.gitError.read()
1409                    sys.exit(1)
1410
1411            if not self.silent:
1412                print ""
1413                if len(self.updatedBranches) > 0:
1414                    sys.stdout.write("Updated branches: ")
1415                    for b in self.updatedBranches:
1416                        sys.stdout.write("%s " % b)
1417                    sys.stdout.write("\n")
1418
1419
1420        self.gitStream.close()
1421        if importProcess.wait() != 0:
1422            die("fast-import failed: %s" % self.gitError.read())
1423        self.gitOutput.close()
1424        self.gitError.close()
1425
1426        return True
1427
1428class P4Rebase(Command):
1429    def __init__(self):
1430        Command.__init__(self)
1431        self.options = [ ]
1432        self.description = ("Fetches the latest revision from perforce and "
1433                            + "rebases the current work (branch) against it")
1434        self.verbose = False
1435
1436    def run(self, args):
1437        sync = P4Sync()
1438        sync.run([])
1439
1440        [upstream, settings] = findUpstreamBranchPoint()
1441        if len(upstream) == 0:
1442            die("Cannot find upstream branchpoint for rebase")
1443
1444        # the branchpoint may be p4/foo~3, so strip off the parent
1445        upstream = re.sub("~[0-9]+$", "", upstream)
1446
1447        print "Rebasing the current branch onto %s" % upstream
1448        oldHead = read_pipe("git rev-parse HEAD").strip()
1449        system("git rebase %s" % upstream)
1450        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1451        return True
1452
1453class P4Clone(P4Sync):
1454    def __init__(self):
1455        P4Sync.__init__(self)
1456        self.description = "Creates a new git repository and imports from Perforce into it"
1457        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1458        self.options.append(
1459            optparse.make_option("--destination", dest="cloneDestination",
1460                                 action='store', default=None,
1461                                 help="where to leave result of the clone"))
1462        self.cloneDestination = None
1463        self.needsGit = False
1464
1465    def defaultDestination(self, args):
1466        ## TODO: use common prefix of args?
1467        depotPath = args[0]
1468        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1469        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1470        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1471        depotDir = re.sub(r"/$", "", depotDir)
1472        return os.path.split(depotDir)[1]
1473
1474    def run(self, args):
1475        if len(args) < 1:
1476            return False
1477
1478        if self.keepRepoPath and not self.cloneDestination:
1479            sys.stderr.write("Must specify destination for --keep-path\n")
1480            sys.exit(1)
1481
1482        depotPaths = args
1483
1484        if not self.cloneDestination and len(depotPaths) > 1:
1485            self.cloneDestination = depotPaths[-1]
1486            depotPaths = depotPaths[:-1]
1487
1488        for p in depotPaths:
1489            if not p.startswith("//"):
1490                return False
1491
1492        if not self.cloneDestination:
1493            self.cloneDestination = self.defaultDestination(args)
1494
1495        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1496        if not os.path.exists(self.cloneDestination):
1497            os.makedirs(self.cloneDestination)
1498        os.chdir(self.cloneDestination)
1499        system("git init")
1500        self.gitdir = os.getcwd() + "/.git"
1501        if not P4Sync.run(self, depotPaths):
1502            return False
1503        if self.branch != "master":
1504            if gitBranchExists("refs/remotes/p4/master"):
1505                system("git branch master refs/remotes/p4/master")
1506                system("git checkout -f")
1507            else:
1508                print "Could not detect main branch. No checkout/master branch created."
1509
1510        return True
1511
1512class P4Branches(Command):
1513    def __init__(self):
1514        Command.__init__(self)
1515        self.options = [ ]
1516        self.description = ("Shows the git branches that hold imports and their "
1517                            + "corresponding perforce depot paths")
1518        self.verbose = False
1519
1520    def run(self, args):
1521        cmdline = "git rev-parse --symbolic "
1522        cmdline += " --remotes"
1523
1524        for line in read_pipe_lines(cmdline):
1525            line = line.strip()
1526
1527            if not line.startswith('p4/') or line == "p4/HEAD":
1528                continue
1529            branch = line
1530
1531            log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1532            settings = extractSettingsGitLog(log)
1533
1534            print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1535        return True
1536
1537class HelpFormatter(optparse.IndentedHelpFormatter):
1538    def __init__(self):
1539        optparse.IndentedHelpFormatter.__init__(self)
1540
1541    def format_description(self, description):
1542        if description:
1543            return description + "\n"
1544        else:
1545            return ""
1546
1547def printUsage(commands):
1548    print "usage: %s <command> [options]" % sys.argv[0]
1549    print ""
1550    print "valid commands: %s" % ", ".join(commands)
1551    print ""
1552    print "Try %s <command> --help for command specific help." % sys.argv[0]
1553    print ""
1554
1555commands = {
1556    "debug" : P4Debug,
1557    "submit" : P4Submit,
1558    "sync" : P4Sync,
1559    "rebase" : P4Rebase,
1560    "clone" : P4Clone,
1561    "rollback" : P4RollBack,
1562    "branches" : P4Branches
1563}
1564
1565
1566def main():
1567    if len(sys.argv[1:]) == 0:
1568        printUsage(commands.keys())
1569        sys.exit(2)
1570
1571    cmd = ""
1572    cmdName = sys.argv[1]
1573    try:
1574        klass = commands[cmdName]
1575        cmd = klass()
1576    except KeyError:
1577        print "unknown command %s" % cmdName
1578        print ""
1579        printUsage(commands.keys())
1580        sys.exit(2)
1581
1582    options = cmd.options
1583    cmd.gitdir = os.environ.get("GIT_DIR", None)
1584
1585    args = sys.argv[2:]
1586
1587    if len(options) > 0:
1588        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1589
1590        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1591                                       options,
1592                                       description = cmd.description,
1593                                       formatter = HelpFormatter())
1594
1595        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1596    global verbose
1597    verbose = cmd.verbose
1598    if cmd.needsGit:
1599        if cmd.gitdir == None:
1600            cmd.gitdir = os.path.abspath(".git")
1601            if not isValidGitDir(cmd.gitdir):
1602                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1603                if os.path.exists(cmd.gitdir):
1604                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1605                    if len(cdup) > 0:
1606                        os.chdir(cdup);
1607
1608        if not isValidGitDir(cmd.gitdir):
1609            if isValidGitDir(cmd.gitdir + "/.git"):
1610                cmd.gitdir += "/.git"
1611            else:
1612                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1613
1614        os.environ["GIT_DIR"] = cmd.gitdir
1615
1616    if not cmd.run(args):
1617        parser.print_help()
1618
1619
1620if __name__ == '__main__':
1621    main()