Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit Merge branch 'jc/grep-c' (f633616)
   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
 284def p4ChangesForPaths(depotPaths, changeRange):
 285    assert depotPaths
 286    output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, changeRange)
 287                                                        for p in depotPaths]))
 288
 289    changes = []
 290    for line in output:
 291        changeNum = line.split(" ")[1]
 292        changes.append(int(changeNum))
 293
 294    changes.sort()
 295    return changes
 296
 297class Command:
 298    def __init__(self):
 299        self.usage = "usage: %prog [options]"
 300        self.needsGit = True
 301
 302class P4Debug(Command):
 303    def __init__(self):
 304        Command.__init__(self)
 305        self.options = [
 306            optparse.make_option("--verbose", dest="verbose", action="store_true",
 307                                 default=False),
 308            ]
 309        self.description = "A tool to debug the output of p4 -G."
 310        self.needsGit = False
 311        self.verbose = False
 312
 313    def run(self, args):
 314        j = 0
 315        for output in p4CmdList(" ".join(args)):
 316            print 'Element: %d' % j
 317            j += 1
 318            print output
 319        return True
 320
 321class P4RollBack(Command):
 322    def __init__(self):
 323        Command.__init__(self)
 324        self.options = [
 325            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 326            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 327        ]
 328        self.description = "A tool to debug the multi-branch import. Don't use :)"
 329        self.verbose = False
 330        self.rollbackLocalBranches = False
 331
 332    def run(self, args):
 333        if len(args) != 1:
 334            return False
 335        maxChange = int(args[0])
 336
 337        if "p4ExitCode" in p4Cmd("changes -m 1"):
 338            die("Problems executing p4");
 339
 340        if self.rollbackLocalBranches:
 341            refPrefix = "refs/heads/"
 342            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 343        else:
 344            refPrefix = "refs/remotes/"
 345            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 346
 347        for line in lines:
 348            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 349                line = line.strip()
 350                ref = refPrefix + line
 351                log = extractLogMessageFromGitCommit(ref)
 352                settings = extractSettingsGitLog(log)
 353
 354                depotPaths = settings['depot-paths']
 355                change = settings['change']
 356
 357                changed = False
 358
 359                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 360                                                           for p in depotPaths]))) == 0:
 361                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 362                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 363                    continue
 364
 365                while change and int(change) > maxChange:
 366                    changed = True
 367                    if self.verbose:
 368                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 369                    system("git update-ref %s \"%s^\"" % (ref, ref))
 370                    log = extractLogMessageFromGitCommit(ref)
 371                    settings =  extractSettingsGitLog(log)
 372
 373
 374                    depotPaths = settings['depot-paths']
 375                    change = settings['change']
 376
 377                if changed:
 378                    print "%s rewound to %s" % (ref, change)
 379
 380        return True
 381
 382class P4Submit(Command):
 383    def __init__(self):
 384        Command.__init__(self)
 385        self.options = [
 386                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 387                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 388                optparse.make_option("--origin", dest="origin"),
 389                optparse.make_option("--reset", action="store_true", dest="reset"),
 390                optparse.make_option("--log-substitutions", dest="substFile"),
 391                optparse.make_option("--dry-run", action="store_true"),
 392                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 393                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 394        ]
 395        self.description = "Submit changes from git to the perforce depot."
 396        self.usage += " [name of git branch to submit into perforce depot]"
 397        self.firstTime = True
 398        self.reset = False
 399        self.interactive = True
 400        self.dryRun = False
 401        self.substFile = ""
 402        self.firstTime = True
 403        self.origin = ""
 404        self.directSubmit = False
 405        self.trustMeLikeAFool = False
 406        self.verbose = False
 407        self.isWindows = (platform.system() == "Windows")
 408
 409        self.logSubstitutions = {}
 410        self.logSubstitutions["<enter description here>"] = "%log%"
 411        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 412
 413    def check(self):
 414        if len(p4CmdList("opened ...")) > 0:
 415            die("You have files opened with perforce! Close them before starting the sync.")
 416
 417    def start(self):
 418        if len(self.config) > 0 and not self.reset:
 419            die("Cannot start sync. Previous sync config found at %s\n"
 420                "If you want to start submitting again from scratch "
 421                "maybe you want to call git-p4 submit --reset" % self.configFile)
 422
 423        commits = []
 424        if self.directSubmit:
 425            commits.append("0")
 426        else:
 427            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 428                commits.append(line.strip())
 429            commits.reverse()
 430
 431        self.config["commits"] = commits
 432
 433    def prepareLogMessage(self, template, message):
 434        result = ""
 435
 436        for line in template.split("\n"):
 437            if line.startswith("#"):
 438                result += line + "\n"
 439                continue
 440
 441            substituted = False
 442            for key in self.logSubstitutions.keys():
 443                if line.find(key) != -1:
 444                    value = self.logSubstitutions[key]
 445                    value = value.replace("%log%", message)
 446                    if value != "@remove@":
 447                        result += line.replace(key, value) + "\n"
 448                    substituted = True
 449                    break
 450
 451            if not substituted:
 452                result += line + "\n"
 453
 454        return result
 455
 456    def prepareSubmitTemplate(self):
 457        # remove lines in the Files section that show changes to files outside the depot path we're committing into
 458        template = ""
 459        inFilesSection = False
 460        for line in read_pipe_lines("p4 change -o"):
 461            if inFilesSection:
 462                if line.startswith("\t"):
 463                    # path starts and ends with a tab
 464                    path = line[1:]
 465                    lastTab = path.rfind("\t")
 466                    if lastTab != -1:
 467                        path = path[:lastTab]
 468                        if not path.startswith(self.depotPath):
 469                            continue
 470                else:
 471                    inFilesSection = False
 472            else:
 473                if line.startswith("Files:"):
 474                    inFilesSection = True
 475
 476            template += line
 477
 478        return template
 479
 480    def applyCommit(self, id):
 481        if self.directSubmit:
 482            print "Applying local change in working directory/index"
 483            diff = self.diffStatus
 484        else:
 485            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 486            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 487        filesToAdd = set()
 488        filesToDelete = set()
 489        editedFiles = set()
 490        for line in diff:
 491            modifier = line[0]
 492            path = line[1:].strip()
 493            if modifier == "M":
 494                system("p4 edit \"%s\"" % path)
 495                editedFiles.add(path)
 496            elif modifier == "A":
 497                filesToAdd.add(path)
 498                if path in filesToDelete:
 499                    filesToDelete.remove(path)
 500            elif modifier == "D":
 501                filesToDelete.add(path)
 502                if path in filesToAdd:
 503                    filesToAdd.remove(path)
 504            else:
 505                die("unknown modifier %s for %s" % (modifier, path))
 506
 507        if self.directSubmit:
 508            diffcmd = "cat \"%s\"" % self.diffFile
 509        else:
 510            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 511        patchcmd = diffcmd + " | git apply "
 512        tryPatchCmd = patchcmd + "--check -"
 513        applyPatchCmd = patchcmd + "--check --apply -"
 514
 515        if os.system(tryPatchCmd) != 0:
 516            print "Unfortunately applying the change failed!"
 517            print "What do you want to do?"
 518            response = "x"
 519            while response != "s" and response != "a" and response != "w":
 520                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 521                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 522            if response == "s":
 523                print "Skipping! Good luck with the next patches..."
 524                return
 525            elif response == "a":
 526                os.system(applyPatchCmd)
 527                if len(filesToAdd) > 0:
 528                    print "You may also want to call p4 add on the following files:"
 529                    print " ".join(filesToAdd)
 530                if len(filesToDelete):
 531                    print "The following files should be scheduled for deletion with p4 delete:"
 532                    print " ".join(filesToDelete)
 533                die("Please resolve and submit the conflict manually and "
 534                    + "continue afterwards with git-p4 submit --continue")
 535            elif response == "w":
 536                system(diffcmd + " > patch.txt")
 537                print "Patch saved to patch.txt in %s !" % self.clientPath
 538                die("Please resolve and submit the conflict manually and "
 539                    "continue afterwards with git-p4 submit --continue")
 540
 541        system(applyPatchCmd)
 542
 543        for f in filesToAdd:
 544            system("p4 add \"%s\"" % f)
 545        for f in filesToDelete:
 546            system("p4 revert \"%s\"" % f)
 547            system("p4 delete \"%s\"" % f)
 548
 549        logMessage = ""
 550        if not self.directSubmit:
 551            logMessage = extractLogMessageFromGitCommit(id)
 552            logMessage = logMessage.replace("\n", "\n\t")
 553            if self.isWindows:
 554                logMessage = logMessage.replace("\n", "\r\n")
 555            logMessage = logMessage.strip()
 556
 557        template = self.prepareSubmitTemplate()
 558
 559        if self.interactive:
 560            submitTemplate = self.prepareLogMessage(template, logMessage)
 561            diff = read_pipe("p4 diff -du ...")
 562
 563            for newFile in filesToAdd:
 564                diff += "==== new file ====\n"
 565                diff += "--- /dev/null\n"
 566                diff += "+++ %s\n" % newFile
 567                f = open(newFile, "r")
 568                for line in f.readlines():
 569                    diff += "+" + line
 570                f.close()
 571
 572            separatorLine = "######## everything below this line is just the diff #######"
 573            if platform.system() == "Windows":
 574                separatorLine += "\r"
 575            separatorLine += "\n"
 576
 577            response = "e"
 578            if self.trustMeLikeAFool:
 579                response = "y"
 580
 581            firstIteration = True
 582            while response == "e":
 583                if not firstIteration:
 584                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 585                firstIteration = False
 586                if response == "e":
 587                    [handle, fileName] = tempfile.mkstemp()
 588                    tmpFile = os.fdopen(handle, "w+")
 589                    tmpFile.write(submitTemplate + separatorLine + diff)
 590                    tmpFile.close()
 591                    defaultEditor = "vi"
 592                    if platform.system() == "Windows":
 593                        defaultEditor = "notepad"
 594                    editor = os.environ.get("EDITOR", defaultEditor);
 595                    system(editor + " " + fileName)
 596                    tmpFile = open(fileName, "rb")
 597                    message = tmpFile.read()
 598                    tmpFile.close()
 599                    os.remove(fileName)
 600                    submitTemplate = message[:message.index(separatorLine)]
 601                    if self.isWindows:
 602                        submitTemplate = submitTemplate.replace("\r\n", "\n")
 603
 604            if response == "y" or response == "yes":
 605               if self.dryRun:
 606                   print submitTemplate
 607                   raw_input("Press return to continue...")
 608               else:
 609                   if self.directSubmit:
 610                       print "Submitting to git first"
 611                       os.chdir(self.oldWorkingDirectory)
 612                       write_pipe("git commit -a -F -", submitTemplate)
 613                       os.chdir(self.clientPath)
 614
 615                   write_pipe("p4 submit -i", submitTemplate)
 616            elif response == "s":
 617                for f in editedFiles:
 618                    system("p4 revert \"%s\"" % f);
 619                for f in filesToAdd:
 620                    system("p4 revert \"%s\"" % f);
 621                    system("rm %s" %f)
 622                for f in filesToDelete:
 623                    system("p4 delete \"%s\"" % f);
 624                return
 625            else:
 626                print "Not submitting!"
 627                self.interactive = False
 628        else:
 629            fileName = "submit.txt"
 630            file = open(fileName, "w+")
 631            file.write(self.prepareLogMessage(template, logMessage))
 632            file.close()
 633            print ("Perforce submit template written as %s. "
 634                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 635                   % (fileName, fileName))
 636
 637    def run(self, args):
 638        if len(args) == 0:
 639            self.master = currentGitBranch()
 640            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 641                die("Detecting current git branch failed!")
 642        elif len(args) == 1:
 643            self.master = args[0]
 644        else:
 645            return False
 646
 647        [upstream, settings] = findUpstreamBranchPoint()
 648        self.depotPath = settings['depot-paths'][0]
 649        if len(self.origin) == 0:
 650            self.origin = upstream
 651
 652        if self.verbose:
 653            print "Origin branch is " + self.origin
 654
 655        if len(self.depotPath) == 0:
 656            print "Internal error: cannot locate perforce depot path from existing branches"
 657            sys.exit(128)
 658
 659        self.clientPath = p4Where(self.depotPath)
 660
 661        if len(self.clientPath) == 0:
 662            print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
 663            sys.exit(128)
 664
 665        print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
 666        self.oldWorkingDirectory = os.getcwd()
 667
 668        if self.directSubmit:
 669            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 670            if len(self.diffStatus) == 0:
 671                print "No changes in working directory to submit."
 672                return True
 673            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 674            self.diffFile = self.gitdir + "/p4-git-diff"
 675            f = open(self.diffFile, "wb")
 676            f.write(patch)
 677            f.close();
 678
 679        os.chdir(self.clientPath)
 680        print "Syncronizing p4 checkout..."
 681        system("p4 sync ...")
 682
 683        if self.reset:
 684            self.firstTime = True
 685
 686        if len(self.substFile) > 0:
 687            for line in open(self.substFile, "r").readlines():
 688                tokens = line.strip().split("=")
 689                self.logSubstitutions[tokens[0]] = tokens[1]
 690
 691        self.check()
 692        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 693        self.config = shelve.open(self.configFile, writeback=True)
 694
 695        if self.firstTime:
 696            self.start()
 697
 698        commits = self.config.get("commits", [])
 699
 700        while len(commits) > 0:
 701            self.firstTime = False
 702            commit = commits[0]
 703            commits = commits[1:]
 704            self.config["commits"] = commits
 705            self.applyCommit(commit)
 706            if not self.interactive:
 707                break
 708
 709        self.config.close()
 710
 711        if self.directSubmit:
 712            os.remove(self.diffFile)
 713
 714        if len(commits) == 0:
 715            if self.firstTime:
 716                print "No changes found to apply between %s and current HEAD" % self.origin
 717            else:
 718                print "All changes applied!"
 719                os.chdir(self.oldWorkingDirectory)
 720
 721                sync = P4Sync()
 722                sync.run([])
 723
 724                response = raw_input("Do you want to rebase current HEAD from Perforce now using git-p4 rebase? [y]es/[n]o ")
 725                if response == "y" or response == "yes":
 726                    rebase = P4Rebase()
 727                    rebase.rebase()
 728            os.remove(self.configFile)
 729
 730        return True
 731
 732class P4Sync(Command):
 733    def __init__(self):
 734        Command.__init__(self)
 735        self.options = [
 736                optparse.make_option("--branch", dest="branch"),
 737                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 738                optparse.make_option("--changesfile", dest="changesFile"),
 739                optparse.make_option("--silent", dest="silent", action="store_true"),
 740                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 741                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 742                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 743                                     help="Import into refs/heads/ , not refs/remotes"),
 744                optparse.make_option("--max-changes", dest="maxChanges"),
 745                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 746                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 747        ]
 748        self.description = """Imports from Perforce into a git repository.\n
 749    example:
 750    //depot/my/project/ -- to import the current head
 751    //depot/my/project/@all -- to import everything
 752    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 753
 754    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 755
 756        self.usage += " //depot/path[@revRange]"
 757        self.silent = False
 758        self.createdBranches = Set()
 759        self.committedChanges = Set()
 760        self.branch = ""
 761        self.detectBranches = False
 762        self.detectLabels = False
 763        self.changesFile = ""
 764        self.syncWithOrigin = True
 765        self.verbose = False
 766        self.importIntoRemotes = True
 767        self.maxChanges = ""
 768        self.isWindows = (platform.system() == "Windows")
 769        self.keepRepoPath = False
 770        self.depotPaths = None
 771        self.p4BranchesInGit = []
 772
 773        if gitConfig("git-p4.syncFromOrigin") == "false":
 774            self.syncWithOrigin = False
 775
 776    def extractFilesFromCommit(self, commit):
 777        files = []
 778        fnum = 0
 779        while commit.has_key("depotFile%s" % fnum):
 780            path =  commit["depotFile%s" % fnum]
 781
 782            found = [p for p in self.depotPaths
 783                     if path.startswith (p)]
 784            if not found:
 785                fnum = fnum + 1
 786                continue
 787
 788            file = {}
 789            file["path"] = path
 790            file["rev"] = commit["rev%s" % fnum]
 791            file["action"] = commit["action%s" % fnum]
 792            file["type"] = commit["type%s" % fnum]
 793            files.append(file)
 794            fnum = fnum + 1
 795        return files
 796
 797    def stripRepoPath(self, path, prefixes):
 798        if self.keepRepoPath:
 799            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 800
 801        for p in prefixes:
 802            if path.startswith(p):
 803                path = path[len(p):]
 804
 805        return path
 806
 807    def splitFilesIntoBranches(self, commit):
 808        branches = {}
 809        fnum = 0
 810        while commit.has_key("depotFile%s" % fnum):
 811            path =  commit["depotFile%s" % fnum]
 812            found = [p for p in self.depotPaths
 813                     if path.startswith (p)]
 814            if not found:
 815                fnum = fnum + 1
 816                continue
 817
 818            file = {}
 819            file["path"] = path
 820            file["rev"] = commit["rev%s" % fnum]
 821            file["action"] = commit["action%s" % fnum]
 822            file["type"] = commit["type%s" % fnum]
 823            fnum = fnum + 1
 824
 825            relPath = self.stripRepoPath(path, self.depotPaths)
 826
 827            for branch in self.knownBranches.keys():
 828
 829                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 830                if relPath.startswith(branch + "/"):
 831                    if branch not in branches:
 832                        branches[branch] = []
 833                    branches[branch].append(file)
 834                    break
 835
 836        return branches
 837
 838    ## Should move this out, doesn't use SELF.
 839    def readP4Files(self, files):
 840        files = [f for f in files
 841                 if f['action'] != 'delete']
 842
 843        if not files:
 844            return
 845
 846        filedata = p4CmdList('-x - print',
 847                             stdin='\n'.join(['%s#%s' % (f['path'], f['rev'])
 848                                              for f in files]),
 849                             stdin_mode='w+')
 850        if "p4ExitCode" in filedata[0]:
 851            die("Problems executing p4. Error: [%d]."
 852                % (filedata[0]['p4ExitCode']));
 853
 854        j = 0;
 855        contents = {}
 856        while j < len(filedata):
 857            stat = filedata[j]
 858            j += 1
 859            text = ''
 860            while j < len(filedata) and filedata[j]['code'] in ('text',
 861                                                                'binary'):
 862                text += filedata[j]['data']
 863                j += 1
 864
 865
 866            if not stat.has_key('depotFile'):
 867                sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 868                continue
 869
 870            contents[stat['depotFile']] = text
 871
 872        for f in files:
 873            assert not f.has_key('data')
 874            f['data'] = contents[f['path']]
 875
 876    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 877        epoch = details["time"]
 878        author = details["user"]
 879
 880        if self.verbose:
 881            print "commit into %s" % branch
 882
 883        # start with reading files; if that fails, we should not
 884        # create a commit.
 885        new_files = []
 886        for f in files:
 887            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 888                new_files.append (f)
 889            else:
 890                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 891        files = new_files
 892        self.readP4Files(files)
 893
 894
 895
 896
 897        self.gitStream.write("commit %s\n" % branch)
 898#        gitStream.write("mark :%s\n" % details["change"])
 899        self.committedChanges.add(int(details["change"]))
 900        committer = ""
 901        if author not in self.users:
 902            self.getUserMapFromPerforceServer()
 903        if author in self.users:
 904            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 905        else:
 906            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 907
 908        self.gitStream.write("committer %s\n" % committer)
 909
 910        self.gitStream.write("data <<EOT\n")
 911        self.gitStream.write(details["desc"])
 912        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
 913                             % (','.join (branchPrefixes), details["change"]))
 914        if len(details['options']) > 0:
 915            self.gitStream.write(": options = %s" % details['options'])
 916        self.gitStream.write("]\nEOT\n\n")
 917
 918        if len(parent) > 0:
 919            if self.verbose:
 920                print "parent %s" % parent
 921            self.gitStream.write("from %s\n" % parent)
 922
 923        for file in files:
 924            if file["type"] == "apple":
 925                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 926                continue
 927
 928            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 929            if file["action"] == "delete":
 930                self.gitStream.write("D %s\n" % relPath)
 931            else:
 932                data = file['data']
 933
 934                mode = "644"
 935                if file["type"].startswith("x"):
 936                    mode = "755"
 937                elif file["type"] == "symlink":
 938                    mode = "120000"
 939                    # p4 print on a symlink contains "target\n", so strip it off
 940                    data = data[:-1]
 941
 942                if self.isWindows and file["type"].endswith("text"):
 943                    data = data.replace("\r\n", "\n")
 944
 945                self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 946                self.gitStream.write("data %s\n" % len(data))
 947                self.gitStream.write(data)
 948                self.gitStream.write("\n")
 949
 950        self.gitStream.write("\n")
 951
 952        change = int(details["change"])
 953
 954        if self.labels.has_key(change):
 955            label = self.labels[change]
 956            labelDetails = label[0]
 957            labelRevisions = label[1]
 958            if self.verbose:
 959                print "Change %s is labelled %s" % (change, labelDetails)
 960
 961            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 962                                                    for p in branchPrefixes]))
 963
 964            if len(files) == len(labelRevisions):
 965
 966                cleanedFiles = {}
 967                for info in files:
 968                    if info["action"] == "delete":
 969                        continue
 970                    cleanedFiles[info["depotFile"]] = info["rev"]
 971
 972                if cleanedFiles == labelRevisions:
 973                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 974                    self.gitStream.write("from %s\n" % branch)
 975
 976                    owner = labelDetails["Owner"]
 977                    tagger = ""
 978                    if author in self.users:
 979                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 980                    else:
 981                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 982                    self.gitStream.write("tagger %s\n" % tagger)
 983                    self.gitStream.write("data <<EOT\n")
 984                    self.gitStream.write(labelDetails["Description"])
 985                    self.gitStream.write("EOT\n\n")
 986
 987                else:
 988                    if not self.silent:
 989                        print ("Tag %s does not match with change %s: files do not match."
 990                               % (labelDetails["label"], change))
 991
 992            else:
 993                if not self.silent:
 994                    print ("Tag %s does not match with change %s: file count is different."
 995                           % (labelDetails["label"], change))
 996
 997    def getUserCacheFilename(self):
 998        home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
 999        return home + "/.gitp4-usercache.txt"
1000
1001    def getUserMapFromPerforceServer(self):
1002        if self.userMapFromPerforceServer:
1003            return
1004        self.users = {}
1005
1006        for output in p4CmdList("users"):
1007            if not output.has_key("User"):
1008                continue
1009            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
1010
1011
1012        s = ''
1013        for (key, val) in self.users.items():
1014            s += "%s\t%s\n" % (key, val)
1015
1016        open(self.getUserCacheFilename(), "wb").write(s)
1017        self.userMapFromPerforceServer = True
1018
1019    def loadUserMapFromCache(self):
1020        self.users = {}
1021        self.userMapFromPerforceServer = False
1022        try:
1023            cache = open(self.getUserCacheFilename(), "rb")
1024            lines = cache.readlines()
1025            cache.close()
1026            for line in lines:
1027                entry = line.strip().split("\t")
1028                self.users[entry[0]] = entry[1]
1029        except IOError:
1030            self.getUserMapFromPerforceServer()
1031
1032    def getLabels(self):
1033        self.labels = {}
1034
1035        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
1036        if len(l) > 0 and not self.silent:
1037            print "Finding files belonging to labels in %s" % `self.depotPath`
1038
1039        for output in l:
1040            label = output["label"]
1041            revisions = {}
1042            newestChange = 0
1043            if self.verbose:
1044                print "Querying files for label %s" % label
1045            for file in p4CmdList("files "
1046                                  +  ' '.join (["%s...@%s" % (p, label)
1047                                                for p in self.depotPaths])):
1048                revisions[file["depotFile"]] = file["rev"]
1049                change = int(file["change"])
1050                if change > newestChange:
1051                    newestChange = change
1052
1053            self.labels[newestChange] = [output, revisions]
1054
1055        if self.verbose:
1056            print "Label changes: %s" % self.labels.keys()
1057
1058    def guessProjectName(self):
1059        for p in self.depotPaths:
1060            if p.endswith("/"):
1061                p = p[:-1]
1062            p = p[p.strip().rfind("/") + 1:]
1063            if not p.endswith("/"):
1064               p += "/"
1065            return p
1066
1067    def getBranchMapping(self):
1068        lostAndFoundBranches = set()
1069
1070        for info in p4CmdList("branches"):
1071            details = p4Cmd("branch -o %s" % info["branch"])
1072            viewIdx = 0
1073            while details.has_key("View%s" % viewIdx):
1074                paths = details["View%s" % viewIdx].split(" ")
1075                viewIdx = viewIdx + 1
1076                # require standard //depot/foo/... //depot/bar/... mapping
1077                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1078                    continue
1079                source = paths[0]
1080                destination = paths[1]
1081                ## HACK
1082                if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
1083                    source = source[len(self.depotPaths[0]):-4]
1084                    destination = destination[len(self.depotPaths[0]):-4]
1085
1086                    if destination in self.knownBranches:
1087                        if not self.silent:
1088                            print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1089                            print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1090                        continue
1091
1092                    self.knownBranches[destination] = source
1093
1094                    lostAndFoundBranches.discard(destination)
1095
1096                    if source not in self.knownBranches:
1097                        lostAndFoundBranches.add(source)
1098
1099
1100        for branch in lostAndFoundBranches:
1101            self.knownBranches[branch] = branch
1102
1103    def listExistingP4GitBranches(self):
1104        # branches holds mapping from name to commit
1105        branches = p4BranchesInGit(self.importIntoRemotes)
1106        self.p4BranchesInGit = branches.keys()
1107        for branch in branches.keys():
1108            self.initialParents[self.refPrefix + branch] = branches[branch]
1109
1110    def updateOptionDict(self, d):
1111        option_keys = {}
1112        if self.keepRepoPath:
1113            option_keys['keepRepoPath'] = 1
1114
1115        d["options"] = ' '.join(sorted(option_keys.keys()))
1116
1117    def readOptions(self, d):
1118        self.keepRepoPath = (d.has_key('options')
1119                             and ('keepRepoPath' in d['options']))
1120
1121    def gitRefForBranch(self, branch):
1122        if branch == "main":
1123            return self.refPrefix + "master"
1124
1125        if len(branch) <= 0:
1126            return branch
1127
1128        return self.refPrefix + self.projectName + branch
1129
1130    def gitCommitByP4Change(self, ref, change):
1131        if self.verbose:
1132            print "looking in ref " + ref + " for change %s using bisect..." % change
1133
1134        earliestCommit = ""
1135        latestCommit = parseRevision(ref)
1136
1137        while True:
1138            if self.verbose:
1139                print "trying: earliest %s latest %s" % (earliestCommit, latestCommit)
1140            next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip()
1141            if len(next) == 0:
1142                if self.verbose:
1143                    print "argh"
1144                return ""
1145            log = extractLogMessageFromGitCommit(next)
1146            settings = extractSettingsGitLog(log)
1147            currentChange = int(settings['change'])
1148            if self.verbose:
1149                print "current change %s" % currentChange
1150
1151            if currentChange == change:
1152                if self.verbose:
1153                    print "found %s" % next
1154                return next
1155
1156            if currentChange < change:
1157                earliestCommit = "^%s" % next
1158            else:
1159                latestCommit = "%s" % next
1160
1161        return ""
1162
1163    def importNewBranch(self, branch, maxChange):
1164        # make fast-import flush all changes to disk and update the refs using the checkpoint
1165        # command so that we can try to find the branch parent in the git history
1166        self.gitStream.write("checkpoint\n\n");
1167        self.gitStream.flush();
1168        branchPrefix = self.depotPaths[0] + branch + "/"
1169        range = "@1,%s" % maxChange
1170        #print "prefix" + branchPrefix
1171        changes = p4ChangesForPaths([branchPrefix], range)
1172        if len(changes) <= 0:
1173            return False
1174        firstChange = changes[0]
1175        #print "first change in branch: %s" % firstChange
1176        sourceBranch = self.knownBranches[branch]
1177        sourceDepotPath = self.depotPaths[0] + sourceBranch
1178        sourceRef = self.gitRefForBranch(sourceBranch)
1179        #print "source " + sourceBranch
1180
1181        branchParentChange = int(p4Cmd("changes -m 1 %s...@1,%s" % (sourceDepotPath, firstChange))["change"])
1182        #print "branch parent: %s" % branchParentChange
1183        gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange)
1184        if len(gitParent) > 0:
1185            self.initialParents[self.gitRefForBranch(branch)] = gitParent
1186            #print "parent git commit: %s" % gitParent
1187
1188        self.importChanges(changes)
1189        return True
1190
1191    def importChanges(self, changes):
1192        cnt = 1
1193        for change in changes:
1194            description = p4Cmd("describe %s" % change)
1195            self.updateOptionDict(description)
1196
1197            if not self.silent:
1198                sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1199                sys.stdout.flush()
1200            cnt = cnt + 1
1201
1202            try:
1203                if self.detectBranches:
1204                    branches = self.splitFilesIntoBranches(description)
1205                    for branch in branches.keys():
1206                        ## HACK  --hwn
1207                        branchPrefix = self.depotPaths[0] + branch + "/"
1208
1209                        parent = ""
1210
1211                        filesForCommit = branches[branch]
1212
1213                        if self.verbose:
1214                            print "branch is %s" % branch
1215
1216                        self.updatedBranches.add(branch)
1217
1218                        if branch not in self.createdBranches:
1219                            self.createdBranches.add(branch)
1220                            parent = self.knownBranches[branch]
1221                            if parent == branch:
1222                                parent = ""
1223                            else:
1224                                fullBranch = self.projectName + branch
1225                                if fullBranch not in self.p4BranchesInGit:
1226                                    if not self.silent:
1227                                        print("\n    Importing new branch %s" % fullBranch);
1228                                    if self.importNewBranch(branch, change - 1):
1229                                        parent = ""
1230                                        self.p4BranchesInGit.append(fullBranch)
1231                                    if not self.silent:
1232                                        print("\n    Resuming with change %s" % change);
1233
1234                                if self.verbose:
1235                                    print "parent determined through known branches: %s" % parent
1236
1237                        branch = self.gitRefForBranch(branch)
1238                        parent = self.gitRefForBranch(parent)
1239
1240                        if self.verbose:
1241                            print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1242
1243                        if len(parent) == 0 and branch in self.initialParents:
1244                            parent = self.initialParents[branch]
1245                            del self.initialParents[branch]
1246
1247                        self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1248                else:
1249                    files = self.extractFilesFromCommit(description)
1250                    self.commit(description, files, self.branch, self.depotPaths,
1251                                self.initialParent)
1252                    self.initialParent = ""
1253            except IOError:
1254                print self.gitError.read()
1255                sys.exit(1)
1256
1257    def importHeadRevision(self, revision):
1258        print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
1259
1260        details = { "user" : "git perforce import user", "time" : int(time.time()) }
1261        details["desc"] = ("Initial import of %s from the state at revision %s"
1262                           % (' '.join(self.depotPaths), revision))
1263        details["change"] = revision
1264        newestRevision = 0
1265
1266        fileCnt = 0
1267        for info in p4CmdList("files "
1268                              +  ' '.join(["%s...%s"
1269                                           % (p, revision)
1270                                           for p in self.depotPaths])):
1271
1272            if info['code'] == 'error':
1273                sys.stderr.write("p4 returned an error: %s\n"
1274                                 % info['data'])
1275                sys.exit(1)
1276
1277
1278            change = int(info["change"])
1279            if change > newestRevision:
1280                newestRevision = change
1281
1282            if info["action"] == "delete":
1283                # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1284                #fileCnt = fileCnt + 1
1285                continue
1286
1287            for prop in ["depotFile", "rev", "action", "type" ]:
1288                details["%s%s" % (prop, fileCnt)] = info[prop]
1289
1290            fileCnt = fileCnt + 1
1291
1292        details["change"] = newestRevision
1293        self.updateOptionDict(details)
1294        try:
1295            self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1296        except IOError:
1297            print "IO error with git fast-import. Is your git version recent enough?"
1298            print self.gitError.read()
1299
1300
1301    def run(self, args):
1302        self.depotPaths = []
1303        self.changeRange = ""
1304        self.initialParent = ""
1305        self.previousDepotPaths = []
1306
1307        # map from branch depot path to parent branch
1308        self.knownBranches = {}
1309        self.initialParents = {}
1310        self.hasOrigin = originP4BranchesExist()
1311        if not self.syncWithOrigin:
1312            self.hasOrigin = False
1313
1314        if self.importIntoRemotes:
1315            self.refPrefix = "refs/remotes/p4/"
1316        else:
1317            self.refPrefix = "refs/heads/p4/"
1318
1319        if self.syncWithOrigin and self.hasOrigin:
1320            if not self.silent:
1321                print "Syncing with origin first by calling git fetch origin"
1322            system("git fetch origin")
1323
1324        if len(self.branch) == 0:
1325            self.branch = self.refPrefix + "master"
1326            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1327                system("git update-ref %s refs/heads/p4" % self.branch)
1328                system("git branch -D p4");
1329            # create it /after/ importing, when master exists
1330            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
1331                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1332
1333        # TODO: should always look at previous commits,
1334        # merge with previous imports, if possible.
1335        if args == []:
1336            if self.hasOrigin:
1337                createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
1338            self.listExistingP4GitBranches()
1339
1340            if len(self.p4BranchesInGit) > 1:
1341                if not self.silent:
1342                    print "Importing from/into multiple branches"
1343                self.detectBranches = True
1344
1345            if self.verbose:
1346                print "branches: %s" % self.p4BranchesInGit
1347
1348            p4Change = 0
1349            for branch in self.p4BranchesInGit:
1350                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1351
1352                settings = extractSettingsGitLog(logMsg)
1353
1354                self.readOptions(settings)
1355                if (settings.has_key('depot-paths')
1356                    and settings.has_key ('change')):
1357                    change = int(settings['change']) + 1
1358                    p4Change = max(p4Change, change)
1359
1360                    depotPaths = sorted(settings['depot-paths'])
1361                    if self.previousDepotPaths == []:
1362                        self.previousDepotPaths = depotPaths
1363                    else:
1364                        paths = []
1365                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1366                            for i in range(0, min(len(cur), len(prev))):
1367                                if cur[i] <> prev[i]:
1368                                    i = i - 1
1369                                    break
1370
1371                            paths.append (cur[:i + 1])
1372
1373                        self.previousDepotPaths = paths
1374
1375            if p4Change > 0:
1376                self.depotPaths = sorted(self.previousDepotPaths)
1377                self.changeRange = "@%s,#head" % p4Change
1378                if not self.detectBranches:
1379                    self.initialParent = parseRevision(self.branch)
1380                if not self.silent and not self.detectBranches:
1381                    print "Performing incremental import into %s git branch" % self.branch
1382
1383        if not self.branch.startswith("refs/"):
1384            self.branch = "refs/heads/" + self.branch
1385
1386        if len(args) == 0 and self.depotPaths:
1387            if not self.silent:
1388                print "Depot paths: %s" % ' '.join(self.depotPaths)
1389        else:
1390            if self.depotPaths and self.depotPaths != args:
1391                print ("previous import used depot path %s and now %s was specified. "
1392                       "This doesn't work!" % (' '.join (self.depotPaths),
1393                                               ' '.join (args)))
1394                sys.exit(1)
1395
1396            self.depotPaths = sorted(args)
1397
1398        revision = ""
1399        self.users = {}
1400
1401        newPaths = []
1402        for p in self.depotPaths:
1403            if p.find("@") != -1:
1404                atIdx = p.index("@")
1405                self.changeRange = p[atIdx:]
1406                if self.changeRange == "@all":
1407                    self.changeRange = ""
1408                elif ',' not in self.changeRange:
1409                    revision = self.changeRange
1410                    self.changeRange = ""
1411                p = p[:atIdx]
1412            elif p.find("#") != -1:
1413                hashIdx = p.index("#")
1414                revision = p[hashIdx:]
1415                p = p[:hashIdx]
1416            elif self.previousDepotPaths == []:
1417                revision = "#head"
1418
1419            p = re.sub ("\.\.\.$", "", p)
1420            if not p.endswith("/"):
1421                p += "/"
1422
1423            newPaths.append(p)
1424
1425        self.depotPaths = newPaths
1426
1427
1428        self.loadUserMapFromCache()
1429        self.labels = {}
1430        if self.detectLabels:
1431            self.getLabels();
1432
1433        if self.detectBranches:
1434            ## FIXME - what's a P4 projectName ?
1435            self.projectName = self.guessProjectName()
1436
1437            if not self.hasOrigin:
1438                self.getBranchMapping();
1439            if self.verbose:
1440                print "p4-git branches: %s" % self.p4BranchesInGit
1441                print "initial parents: %s" % self.initialParents
1442            for b in self.p4BranchesInGit:
1443                if b != "master":
1444
1445                    ## FIXME
1446                    b = b[len(self.projectName):]
1447                self.createdBranches.add(b)
1448
1449        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1450
1451        importProcess = subprocess.Popen(["git", "fast-import"],
1452                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1453                                         stderr=subprocess.PIPE);
1454        self.gitOutput = importProcess.stdout
1455        self.gitStream = importProcess.stdin
1456        self.gitError = importProcess.stderr
1457
1458        if revision:
1459            self.importHeadRevision(revision)
1460        else:
1461            changes = []
1462
1463            if len(self.changesFile) > 0:
1464                output = open(self.changesFile).readlines()
1465                changeSet = Set()
1466                for line in output:
1467                    changeSet.add(int(line))
1468
1469                for change in changeSet:
1470                    changes.append(change)
1471
1472                changes.sort()
1473            else:
1474                if self.verbose:
1475                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1476                                                              self.changeRange)
1477                changes = p4ChangesForPaths(self.depotPaths, self.changeRange)
1478
1479                if len(self.maxChanges) > 0:
1480                    changes = changes[:min(int(self.maxChanges), len(changes))]
1481
1482            if len(changes) == 0:
1483                if not self.silent:
1484                    print "No changes to import!"
1485                return True
1486
1487            if not self.silent and not self.detectBranches:
1488                print "Import destination: %s" % self.branch
1489
1490            self.updatedBranches = set()
1491
1492            self.importChanges(changes)
1493
1494            if not self.silent:
1495                print ""
1496                if len(self.updatedBranches) > 0:
1497                    sys.stdout.write("Updated branches: ")
1498                    for b in self.updatedBranches:
1499                        sys.stdout.write("%s " % b)
1500                    sys.stdout.write("\n")
1501
1502        self.gitStream.close()
1503        if importProcess.wait() != 0:
1504            die("fast-import failed: %s" % self.gitError.read())
1505        self.gitOutput.close()
1506        self.gitError.close()
1507
1508        return True
1509
1510class P4Rebase(Command):
1511    def __init__(self):
1512        Command.__init__(self)
1513        self.options = [ ]
1514        self.description = ("Fetches the latest revision from perforce and "
1515                            + "rebases the current work (branch) against it")
1516        self.verbose = False
1517
1518    def run(self, args):
1519        sync = P4Sync()
1520        sync.run([])
1521
1522        return self.rebase()
1523
1524    def rebase(self):
1525        [upstream, settings] = findUpstreamBranchPoint()
1526        if len(upstream) == 0:
1527            die("Cannot find upstream branchpoint for rebase")
1528
1529        # the branchpoint may be p4/foo~3, so strip off the parent
1530        upstream = re.sub("~[0-9]+$", "", upstream)
1531
1532        print "Rebasing the current branch onto %s" % upstream
1533        oldHead = read_pipe("git rev-parse HEAD").strip()
1534        system("git rebase %s" % upstream)
1535        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1536        return True
1537
1538class P4Clone(P4Sync):
1539    def __init__(self):
1540        P4Sync.__init__(self)
1541        self.description = "Creates a new git repository and imports from Perforce into it"
1542        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1543        self.options.append(
1544            optparse.make_option("--destination", dest="cloneDestination",
1545                                 action='store', default=None,
1546                                 help="where to leave result of the clone"))
1547        self.cloneDestination = None
1548        self.needsGit = False
1549
1550    def defaultDestination(self, args):
1551        ## TODO: use common prefix of args?
1552        depotPath = args[0]
1553        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1554        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1555        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1556        depotDir = re.sub(r"/$", "", depotDir)
1557        return os.path.split(depotDir)[1]
1558
1559    def run(self, args):
1560        if len(args) < 1:
1561            return False
1562
1563        if self.keepRepoPath and not self.cloneDestination:
1564            sys.stderr.write("Must specify destination for --keep-path\n")
1565            sys.exit(1)
1566
1567        depotPaths = args
1568
1569        if not self.cloneDestination and len(depotPaths) > 1:
1570            self.cloneDestination = depotPaths[-1]
1571            depotPaths = depotPaths[:-1]
1572
1573        for p in depotPaths:
1574            if not p.startswith("//"):
1575                return False
1576
1577        if not self.cloneDestination:
1578            self.cloneDestination = self.defaultDestination(args)
1579
1580        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1581        if not os.path.exists(self.cloneDestination):
1582            os.makedirs(self.cloneDestination)
1583        os.chdir(self.cloneDestination)
1584        system("git init")
1585        self.gitdir = os.getcwd() + "/.git"
1586        if not P4Sync.run(self, depotPaths):
1587            return False
1588        if self.branch != "master":
1589            if gitBranchExists("refs/remotes/p4/master"):
1590                system("git branch master refs/remotes/p4/master")
1591                system("git checkout -f")
1592            else:
1593                print "Could not detect main branch. No checkout/master branch created."
1594
1595        return True
1596
1597class P4Branches(Command):
1598    def __init__(self):
1599        Command.__init__(self)
1600        self.options = [ ]
1601        self.description = ("Shows the git branches that hold imports and their "
1602                            + "corresponding perforce depot paths")
1603        self.verbose = False
1604
1605    def run(self, args):
1606        if originP4BranchesExist():
1607            createOrUpdateBranchesFromOrigin()
1608
1609        cmdline = "git rev-parse --symbolic "
1610        cmdline += " --remotes"
1611
1612        for line in read_pipe_lines(cmdline):
1613            line = line.strip()
1614
1615            if not line.startswith('p4/') or line == "p4/HEAD":
1616                continue
1617            branch = line
1618
1619            log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1620            settings = extractSettingsGitLog(log)
1621
1622            print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1623        return True
1624
1625class HelpFormatter(optparse.IndentedHelpFormatter):
1626    def __init__(self):
1627        optparse.IndentedHelpFormatter.__init__(self)
1628
1629    def format_description(self, description):
1630        if description:
1631            return description + "\n"
1632        else:
1633            return ""
1634
1635def printUsage(commands):
1636    print "usage: %s <command> [options]" % sys.argv[0]
1637    print ""
1638    print "valid commands: %s" % ", ".join(commands)
1639    print ""
1640    print "Try %s <command> --help for command specific help." % sys.argv[0]
1641    print ""
1642
1643commands = {
1644    "debug" : P4Debug,
1645    "submit" : P4Submit,
1646    "sync" : P4Sync,
1647    "rebase" : P4Rebase,
1648    "clone" : P4Clone,
1649    "rollback" : P4RollBack,
1650    "branches" : P4Branches
1651}
1652
1653
1654def main():
1655    if len(sys.argv[1:]) == 0:
1656        printUsage(commands.keys())
1657        sys.exit(2)
1658
1659    cmd = ""
1660    cmdName = sys.argv[1]
1661    try:
1662        klass = commands[cmdName]
1663        cmd = klass()
1664    except KeyError:
1665        print "unknown command %s" % cmdName
1666        print ""
1667        printUsage(commands.keys())
1668        sys.exit(2)
1669
1670    options = cmd.options
1671    cmd.gitdir = os.environ.get("GIT_DIR", None)
1672
1673    args = sys.argv[2:]
1674
1675    if len(options) > 0:
1676        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1677
1678        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1679                                       options,
1680                                       description = cmd.description,
1681                                       formatter = HelpFormatter())
1682
1683        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1684    global verbose
1685    verbose = cmd.verbose
1686    if cmd.needsGit:
1687        if cmd.gitdir == None:
1688            cmd.gitdir = os.path.abspath(".git")
1689            if not isValidGitDir(cmd.gitdir):
1690                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1691                if os.path.exists(cmd.gitdir):
1692                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1693                    if len(cdup) > 0:
1694                        os.chdir(cdup);
1695
1696        if not isValidGitDir(cmd.gitdir):
1697            if isValidGitDir(cmd.gitdir + "/.git"):
1698                cmd.gitdir += "/.git"
1699            else:
1700                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1701
1702        os.environ["GIT_DIR"] = cmd.gitdir
1703
1704    if not cmd.run(args):
1705        parser.print_help()
1706
1707
1708if __name__ == '__main__':
1709    main()