Andrew's git / gitweb.git / contrib/fast-import/git-p4
?
contrib / fast-import / git-p4on commit Cleanups & import into p4/master for local import (86dff6b)
   1#!/usr/bin/env python
   2#
   3# git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4#
   5# Author: Simon Hausmann <simon@lst.de>
   6# Copyright: 2007 Simon Hausmann <simon@lst.de>
   7#            2007 Trolltech ASA
   8# License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9#
  10
  11import optparse, sys, os, marshal, popen2, subprocess, shelve
  12import tempfile, getopt, sha, os.path, time, platform
  13import re
  14
  15from sets import Set;
  16
  17verbose = False
  18
  19def die(msg):
  20    if verbose:
  21        raise Exception(msg)
  22    else:
  23        sys.stderr.write(msg + "\n")
  24        sys.exit(1)
  25
  26def write_pipe(c, str):
  27    if verbose:
  28        sys.stderr.write('Writing pipe: %s\n' % c)
  29
  30    pipe = os.popen(c, 'w')
  31    val = pipe.write(str)
  32    if pipe.close():
  33        die('Command failed: %s' % c)
  34
  35    return val
  36
  37def read_pipe(c, ignore_error=False):
  38    if verbose:
  39        sys.stderr.write('Reading pipe: %s\n' % c)
  40
  41    pipe = os.popen(c, 'rb')
  42    val = pipe.read()
  43    if pipe.close() and not ignore_error:
  44        die('Command failed: %s' % c)
  45
  46    return val
  47
  48
  49def read_pipe_lines(c):
  50    if verbose:
  51        sys.stderr.write('Reading pipe: %s\n' % c)
  52    ## todo: check return status
  53    pipe = os.popen(c, 'rb')
  54    val = pipe.readlines()
  55    if pipe.close():
  56        die('Command failed: %s' % c)
  57
  58    return val
  59
  60def system(cmd):
  61    if verbose:
  62        sys.stderr.write("executing %s\n" % cmd)
  63    if os.system(cmd) != 0:
  64        die("command failed: %s" % cmd)
  65
  66def p4CmdList(cmd):
  67    cmd = "p4 -G %s" % cmd
  68    if verbose:
  69        sys.stderr.write("Opening pipe: %s\n" % cmd)
  70    pipe = os.popen(cmd, "rb")
  71
  72    result = []
  73    try:
  74        while True:
  75            entry = marshal.load(pipe)
  76            result.append(entry)
  77    except EOFError:
  78        pass
  79    exitCode = pipe.close()
  80    if exitCode != None:
  81        entry = {}
  82        entry["p4ExitCode"] = exitCode
  83        result.append(entry)
  84
  85    return result
  86
  87def p4Cmd(cmd):
  88    list = p4CmdList(cmd)
  89    result = {}
  90    for entry in list:
  91        result.update(entry)
  92    return result;
  93
  94def p4Where(depotPath):
  95    if not depotPath.endswith("/"):
  96        depotPath += "/"
  97    output = p4Cmd("where %s..." % depotPath)
  98    if output["code"] == "error":
  99        return ""
 100    clientPath = ""
 101    if "path" in output:
 102        clientPath = output.get("path")
 103    elif "data" in output:
 104        data = output.get("data")
 105        lastSpace = data.rfind(" ")
 106        clientPath = data[lastSpace + 1:]
 107
 108    if clientPath.endswith("..."):
 109        clientPath = clientPath[:-3]
 110    return clientPath
 111
 112def currentGitBranch():
 113    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 114
 115def isValidGitDir(path):
 116    if (os.path.exists(path + "/HEAD")
 117        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 118        return True;
 119    return False
 120
 121def parseRevision(ref):
 122    return read_pipe("git rev-parse %s" % ref).strip()
 123
 124def extractLogMessageFromGitCommit(commit):
 125    logMessage = ""
 126
 127    ## fixme: title is first line of commit, not 1st paragraph.
 128    foundTitle = False
 129    for log in read_pipe_lines("git cat-file commit %s" % commit):
 130       if not foundTitle:
 131           if len(log) == 1:
 132               foundTitle = True
 133           continue
 134
 135       logMessage += log
 136    return logMessage
 137
 138def extractSettingsGitLog(log):
 139    values = {}
 140    for line in log.split("\n"):
 141        line = line.strip()
 142        m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 143        if not m:
 144            continue
 145
 146        assignments = m.group(1).split (':')
 147        for a in assignments:
 148            vals = a.split ('=')
 149            key = vals[0].strip()
 150            val = ('='.join (vals[1:])).strip()
 151            if val.endswith ('\"') and val.startswith('"'):
 152                val = val[1:-1]
 153
 154            values[key] = val
 155
 156    values['depot-paths'] = values.get("depot-paths").split(',')
 157    return values
 158
 159def gitBranchExists(branch):
 160    proc = subprocess.Popen(["git", "rev-parse", branch],
 161                            stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 162    return proc.wait() == 0;
 163
 164def gitConfig(key):
 165    return read_pipe("git config %s" % key, ignore_error=True).strip()
 166
 167class Command:
 168    def __init__(self):
 169        self.usage = "usage: %prog [options]"
 170        self.needsGit = True
 171
 172class P4Debug(Command):
 173    def __init__(self):
 174        Command.__init__(self)
 175        self.options = [
 176            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 177            ]
 178        self.description = "A tool to debug the output of p4 -G."
 179        self.needsGit = False
 180
 181    def run(self, args):
 182        for output in p4CmdList(" ".join(args)):
 183            print output
 184        return True
 185
 186class P4RollBack(Command):
 187    def __init__(self):
 188        Command.__init__(self)
 189        self.options = [
 190            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 191            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 192        ]
 193        self.description = "A tool to debug the multi-branch import. Don't use :)"
 194        self.verbose = False
 195        self.rollbackLocalBranches = False
 196
 197    def run(self, args):
 198        if len(args) != 1:
 199            return False
 200        maxChange = int(args[0])
 201
 202        if "p4ExitCode" in p4Cmd("changes -m 1"):
 203            die("Problems executing p4");
 204
 205        if self.rollbackLocalBranches:
 206            refPrefix = "refs/heads/"
 207            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 208        else:
 209            refPrefix = "refs/remotes/"
 210            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 211
 212        for line in lines:
 213            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 214                line = line.strip()
 215                ref = refPrefix + line
 216                log = extractLogMessageFromGitCommit(ref)
 217                settings = extractSettingsGitLog(log)
 218
 219                depotPaths = settings['depot-paths']
 220                change = settings['change']
 221
 222                changed = False
 223
 224                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 225                                                           for p in depotPaths]))) == 0:
 226                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 227                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 228                    continue
 229
 230                while change and int(change) > maxChange:
 231                    changed = True
 232                    if self.verbose:
 233                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 234                    system("git update-ref %s \"%s^\"" % (ref, ref))
 235                    log = extractLogMessageFromGitCommit(ref)
 236                    settings =  extractSettingsGitLog(log)
 237
 238
 239                    depotPaths = settings['depot-paths']
 240                    change = settings['change']
 241
 242                if changed:
 243                    print "%s rewound to %s" % (ref, change)
 244
 245        return True
 246
 247class P4Submit(Command):
 248    def __init__(self):
 249        Command.__init__(self)
 250        self.options = [
 251                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 252                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 253                optparse.make_option("--origin", dest="origin"),
 254                optparse.make_option("--reset", action="store_true", dest="reset"),
 255                optparse.make_option("--log-substitutions", dest="substFile"),
 256                optparse.make_option("--dry-run", action="store_true"),
 257                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 258                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 259        ]
 260        self.description = "Submit changes from git to the perforce depot."
 261        self.usage += " [name of git branch to submit into perforce depot]"
 262        self.firstTime = True
 263        self.reset = False
 264        self.interactive = True
 265        self.dryRun = False
 266        self.substFile = ""
 267        self.firstTime = True
 268        self.origin = ""
 269        self.directSubmit = False
 270        self.trustMeLikeAFool = False
 271
 272        self.logSubstitutions = {}
 273        self.logSubstitutions["<enter description here>"] = "%log%"
 274        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 275
 276    def check(self):
 277        if len(p4CmdList("opened ...")) > 0:
 278            die("You have files opened with perforce! Close them before starting the sync.")
 279
 280    def start(self):
 281        if len(self.config) > 0 and not self.reset:
 282            die("Cannot start sync. Previous sync config found at %s\n"
 283                "If you want to start submitting again from scratch "
 284                "maybe you want to call git-p4 submit --reset" % self.configFile)
 285
 286        commits = []
 287        if self.directSubmit:
 288            commits.append("0")
 289        else:
 290            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 291                commits.append(line.strip())
 292            commits.reverse()
 293
 294        self.config["commits"] = commits
 295
 296    def prepareLogMessage(self, template, message):
 297        result = ""
 298
 299        for line in template.split("\n"):
 300            if line.startswith("#"):
 301                result += line + "\n"
 302                continue
 303
 304            substituted = False
 305            for key in self.logSubstitutions.keys():
 306                if line.find(key) != -1:
 307                    value = self.logSubstitutions[key]
 308                    value = value.replace("%log%", message)
 309                    if value != "@remove@":
 310                        result += line.replace(key, value) + "\n"
 311                    substituted = True
 312                    break
 313
 314            if not substituted:
 315                result += line + "\n"
 316
 317        return result
 318
 319    def applyCommit(self, id):
 320        if self.directSubmit:
 321            print "Applying local change in working directory/index"
 322            diff = self.diffStatus
 323        else:
 324            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 325            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 326        filesToAdd = set()
 327        filesToDelete = set()
 328        editedFiles = set()
 329        for line in diff:
 330            modifier = line[0]
 331            path = line[1:].strip()
 332            if modifier == "M":
 333                system("p4 edit \"%s\"" % path)
 334                editedFiles.add(path)
 335            elif modifier == "A":
 336                filesToAdd.add(path)
 337                if path in filesToDelete:
 338                    filesToDelete.remove(path)
 339            elif modifier == "D":
 340                filesToDelete.add(path)
 341                if path in filesToAdd:
 342                    filesToAdd.remove(path)
 343            else:
 344                die("unknown modifier %s for %s" % (modifier, path))
 345
 346        if self.directSubmit:
 347            diffcmd = "cat \"%s\"" % self.diffFile
 348        else:
 349            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 350        patchcmd = diffcmd + " | git apply "
 351        tryPatchCmd = patchcmd + "--check -"
 352        applyPatchCmd = patchcmd + "--check --apply -"
 353
 354        if os.system(tryPatchCmd) != 0:
 355            print "Unfortunately applying the change failed!"
 356            print "What do you want to do?"
 357            response = "x"
 358            while response != "s" and response != "a" and response != "w":
 359                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 360                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 361            if response == "s":
 362                print "Skipping! Good luck with the next patches..."
 363                return
 364            elif response == "a":
 365                os.system(applyPatchCmd)
 366                if len(filesToAdd) > 0:
 367                    print "You may also want to call p4 add on the following files:"
 368                    print " ".join(filesToAdd)
 369                if len(filesToDelete):
 370                    print "The following files should be scheduled for deletion with p4 delete:"
 371                    print " ".join(filesToDelete)
 372                die("Please resolve and submit the conflict manually and "
 373                    + "continue afterwards with git-p4 submit --continue")
 374            elif response == "w":
 375                system(diffcmd + " > patch.txt")
 376                print "Patch saved to patch.txt in %s !" % self.clientPath
 377                die("Please resolve and submit the conflict manually and "
 378                    "continue afterwards with git-p4 submit --continue")
 379
 380        system(applyPatchCmd)
 381
 382        for f in filesToAdd:
 383            system("p4 add %s" % f)
 384        for f in filesToDelete:
 385            system("p4 revert %s" % f)
 386            system("p4 delete %s" % f)
 387
 388        logMessage = ""
 389        if not self.directSubmit:
 390            logMessage = extractLogMessageFromGitCommit(id)
 391            logMessage = logMessage.replace("\n", "\n\t")
 392            logMessage = logMessage.strip()
 393
 394        template = read_pipe("p4 change -o")
 395
 396        if self.interactive:
 397            submitTemplate = self.prepareLogMessage(template, logMessage)
 398            diff = read_pipe("p4 diff -du ...")
 399
 400            for newFile in filesToAdd:
 401                diff += "==== new file ====\n"
 402                diff += "--- /dev/null\n"
 403                diff += "+++ %s\n" % newFile
 404                f = open(newFile, "r")
 405                for line in f.readlines():
 406                    diff += "+" + line
 407                f.close()
 408
 409            separatorLine = "######## everything below this line is just the diff #######"
 410            if platform.system() == "Windows":
 411                separatorLine += "\r"
 412            separatorLine += "\n"
 413
 414            response = "e"
 415            if self.trustMeLikeAFool:
 416                response = "y"
 417
 418            firstIteration = True
 419            while response == "e":
 420                if not firstIteration:
 421                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 422                firstIteration = False
 423                if response == "e":
 424                    [handle, fileName] = tempfile.mkstemp()
 425                    tmpFile = os.fdopen(handle, "w+")
 426                    tmpFile.write(submitTemplate + separatorLine + diff)
 427                    tmpFile.close()
 428                    defaultEditor = "vi"
 429                    if platform.system() == "Windows":
 430                        defaultEditor = "notepad"
 431                    editor = os.environ.get("EDITOR", defaultEditor);
 432                    system(editor + " " + fileName)
 433                    tmpFile = open(fileName, "rb")
 434                    message = tmpFile.read()
 435                    tmpFile.close()
 436                    os.remove(fileName)
 437                    submitTemplate = message[:message.index(separatorLine)]
 438
 439            if response == "y" or response == "yes":
 440               if self.dryRun:
 441                   print submitTemplate
 442                   raw_input("Press return to continue...")
 443               else:
 444                   if self.directSubmit:
 445                       print "Submitting to git first"
 446                       os.chdir(self.oldWorkingDirectory)
 447                       write_pipe("git commit -a -F -", submitTemplate)
 448                       os.chdir(self.clientPath)
 449
 450                   write_pipe("p4 submit -i", submitTemplate)
 451            elif response == "s":
 452                for f in editedFiles:
 453                    system("p4 revert \"%s\"" % f);
 454                for f in filesToAdd:
 455                    system("p4 revert \"%s\"" % f);
 456                    system("rm %s" %f)
 457                for f in filesToDelete:
 458                    system("p4 delete \"%s\"" % f);
 459                return
 460            else:
 461                print "Not submitting!"
 462                self.interactive = False
 463        else:
 464            fileName = "submit.txt"
 465            file = open(fileName, "w+")
 466            file.write(self.prepareLogMessage(template, logMessage))
 467            file.close()
 468            print ("Perforce submit template written as %s. "
 469                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 470                   % (fileName, fileName))
 471
 472    def run(self, args):
 473        # make gitdir absolute so we can cd out into the perforce checkout
 474        os.environ["GIT_DIR"] = gitdir
 475
 476        if len(args) == 0:
 477            self.master = currentGitBranch()
 478            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 479                die("Detecting current git branch failed!")
 480        elif len(args) == 1:
 481            self.master = args[0]
 482        else:
 483            return False
 484
 485        depotPath = ""
 486        settings = None
 487        if gitBranchExists("p4"):
 488            settings = extractSettingsGitLog(extractLogMessageFromGitCommit("p4"))
 489        if len(depotPath) == 0 and gitBranchExists("origin"):
 490            settings = extractSettingsGitLog(extractLogMessageFromGitCommit("origin"))
 491        depotPaths = settings['depot-paths']
 492
 493        if len(depotPath) == 0:
 494            print "Internal error: cannot locate perforce depot path from existing branches"
 495            sys.exit(128)
 496
 497        self.clientPath = p4Where(depotPath)
 498
 499        if len(self.clientPath) == 0:
 500            print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 501            sys.exit(128)
 502
 503        print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 504        self.oldWorkingDirectory = os.getcwd()
 505
 506        if self.directSubmit:
 507            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 508            if len(self.diffStatus) == 0:
 509                print "No changes in working directory to submit."
 510                return True
 511            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 512            self.diffFile = self.gitdir + "/p4-git-diff"
 513            f = open(self.diffFile, "wb")
 514            f.write(patch)
 515            f.close();
 516
 517        os.chdir(self.clientPath)
 518        response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 519        if response == "y" or response == "yes":
 520            system("p4 sync ...")
 521
 522        if len(self.origin) == 0:
 523            if gitBranchExists("p4"):
 524                self.origin = "p4"
 525            else:
 526                self.origin = "origin"
 527
 528        if self.reset:
 529            self.firstTime = True
 530
 531        if len(self.substFile) > 0:
 532            for line in open(self.substFile, "r").readlines():
 533                tokens = line.strip().split("=")
 534                self.logSubstitutions[tokens[0]] = tokens[1]
 535
 536        self.check()
 537        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 538        self.config = shelve.open(self.configFile, writeback=True)
 539
 540        if self.firstTime:
 541            self.start()
 542
 543        commits = self.config.get("commits", [])
 544
 545        while len(commits) > 0:
 546            self.firstTime = False
 547            commit = commits[0]
 548            commits = commits[1:]
 549            self.config["commits"] = commits
 550            self.applyCommit(commit)
 551            if not self.interactive:
 552                break
 553
 554        self.config.close()
 555
 556        if self.directSubmit:
 557            os.remove(self.diffFile)
 558
 559        if len(commits) == 0:
 560            if self.firstTime:
 561                print "No changes found to apply between %s and current HEAD" % self.origin
 562            else:
 563                print "All changes applied!"
 564                os.chdir(self.oldWorkingDirectory)
 565                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 566                if response == "y" or response == "yes":
 567                    rebase = P4Rebase()
 568                    rebase.run([])
 569            os.remove(self.configFile)
 570
 571        return True
 572
 573class P4Sync(Command):
 574    def __init__(self):
 575        Command.__init__(self)
 576        self.options = [
 577                optparse.make_option("--branch", dest="branch"),
 578                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 579                optparse.make_option("--changesfile", dest="changesFile"),
 580                optparse.make_option("--silent", dest="silent", action="store_true"),
 581                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 582                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 583                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 584                                     help="Import into refs/heads/ , not refs/remotes"),
 585                optparse.make_option("--max-changes", dest="maxChanges"),
 586                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 587                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 588        ]
 589        self.description = """Imports from Perforce into a git repository.\n
 590    example:
 591    //depot/my/project/ -- to import the current head
 592    //depot/my/project/@all -- to import everything
 593    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 594
 595    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 596
 597        self.usage += " //depot/path[@revRange]"
 598        self.silent = False
 599        self.createdBranches = Set()
 600        self.committedChanges = Set()
 601        self.branch = ""
 602        self.detectBranches = False
 603        self.detectLabels = False
 604        self.changesFile = ""
 605        self.syncWithOrigin = True
 606        self.verbose = False
 607        self.importIntoRemotes = True
 608        self.maxChanges = ""
 609        self.isWindows = (platform.system() == "Windows")
 610        self.keepRepoPath = False
 611        self.depotPaths = None
 612
 613        if gitConfig("git-p4.syncFromOrigin") == "false":
 614            self.syncWithOrigin = False
 615
 616    def extractFilesFromCommit(self, commit):
 617        files = []
 618        fnum = 0
 619        while commit.has_key("depotFile%s" % fnum):
 620            path =  commit["depotFile%s" % fnum]
 621
 622            found = [p for p in self.depotPaths
 623                     if path.startswith (p)]
 624            if not found:
 625                fnum = fnum + 1
 626                continue
 627
 628            file = {}
 629            file["path"] = path
 630            file["rev"] = commit["rev%s" % fnum]
 631            file["action"] = commit["action%s" % fnum]
 632            file["type"] = commit["type%s" % fnum]
 633            files.append(file)
 634            fnum = fnum + 1
 635        return files
 636
 637    def stripRepoPath(self, path, prefixes):
 638        if self.keepRepoPath:
 639            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 640
 641        for p in prefixes:
 642            if path.startswith(p):
 643                path = path[len(p):]
 644
 645        return path
 646
 647    def splitFilesIntoBranches(self, commit):
 648        branches = {}
 649        fnum = 0
 650        while commit.has_key("depotFile%s" % fnum):
 651            path =  commit["depotFile%s" % fnum]
 652            found = [p for p in self.depotPaths
 653                     if path.startswith (p)]
 654            if not found:
 655                fnum = fnum + 1
 656                continue
 657
 658            file = {}
 659            file["path"] = path
 660            file["rev"] = commit["rev%s" % fnum]
 661            file["action"] = commit["action%s" % fnum]
 662            file["type"] = commit["type%s" % fnum]
 663            fnum = fnum + 1
 664
 665            relPath = self.stripRepoPath(path, self.depotPaths)
 666
 667            for branch in self.knownBranches.keys():
 668
 669                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 670                if relPath.startswith(branch + "/"):
 671                    if branch not in branches:
 672                        branches[branch] = []
 673                    branches[branch].append(file)
 674
 675        return branches
 676
 677    ## Should move this out, doesn't use SELF.
 678    def readP4Files(self, files):
 679        specs = [(f['path'] + "#" + f['rev'], f)  for f in files
 680                 if f['action'] != 'delete']
 681
 682        if not specs:
 683            return
 684
 685        filedata = p4CmdList('print %s' % ' '.join(['"%s"' % path
 686                                                for (path, info) in specs]))
 687
 688        j = 0;
 689        contents = {}
 690        while filedata[j:]:
 691            stat = filedata[j]
 692            text = filedata[j+1]
 693            j += 2
 694
 695            assert stat['code'] == 'stat' and text['code'] == 'text'
 696            contents[stat['depotFile']] = text['data']
 697
 698        for f in files:
 699            assert not f.has_key('data')
 700            f['data'] = contents[f['path']]
 701
 702    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 703        epoch = details["time"]
 704        author = details["user"]
 705
 706        if self.verbose:
 707            print "commit into %s" % branch
 708
 709        # start with reading files; if that fails, we should not
 710        # create a commit.
 711        new_files = []
 712        for f in files:
 713            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 714                new_files.append (f)
 715            else:
 716                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 717        files = new_files
 718        self.readP4Files(files)
 719
 720
 721
 722
 723        self.gitStream.write("commit %s\n" % branch)
 724#        gitStream.write("mark :%s\n" % details["change"])
 725        self.committedChanges.add(int(details["change"]))
 726        committer = ""
 727        if author not in self.users:
 728            self.getUserMapFromPerforceServer()
 729        if author in self.users:
 730            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 731        else:
 732            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 733
 734        self.gitStream.write("committer %s\n" % committer)
 735
 736        self.gitStream.write("data <<EOT\n")
 737        self.gitStream.write(details["desc"])
 738        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s: "
 739                             "options = %s]\n"
 740                             % (','.join (branchPrefixes), details["change"],
 741                                details['options']
 742                                ))
 743        self.gitStream.write("EOT\n\n")
 744
 745        if len(parent) > 0:
 746            if self.verbose:
 747                print "parent %s" % parent
 748            self.gitStream.write("from %s\n" % parent)
 749
 750        for file in files:
 751            if file["type"] == "apple":
 752                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 753                continue
 754
 755            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 756            if file["action"] == "delete":
 757                self.gitStream.write("D %s\n" % relPath)
 758            else:
 759                mode = 644
 760                if file["type"].startswith("x"):
 761                    mode = 755
 762
 763                data = file['data']
 764
 765                if self.isWindows and file["type"].endswith("text"):
 766                    data = data.replace("\r\n", "\n")
 767
 768                self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 769                self.gitStream.write("data %s\n" % len(data))
 770                self.gitStream.write(data)
 771                self.gitStream.write("\n")
 772
 773        self.gitStream.write("\n")
 774
 775        change = int(details["change"])
 776
 777        if self.labels.has_key(change):
 778            label = self.labels[change]
 779            labelDetails = label[0]
 780            labelRevisions = label[1]
 781            if self.verbose:
 782                print "Change %s is labelled %s" % (change, labelDetails)
 783
 784            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 785                                                    for p in branchPrefixes]))
 786
 787            if len(files) == len(labelRevisions):
 788
 789                cleanedFiles = {}
 790                for info in files:
 791                    if info["action"] == "delete":
 792                        continue
 793                    cleanedFiles[info["depotFile"]] = info["rev"]
 794
 795                if cleanedFiles == labelRevisions:
 796                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 797                    self.gitStream.write("from %s\n" % branch)
 798
 799                    owner = labelDetails["Owner"]
 800                    tagger = ""
 801                    if author in self.users:
 802                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 803                    else:
 804                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 805                    self.gitStream.write("tagger %s\n" % tagger)
 806                    self.gitStream.write("data <<EOT\n")
 807                    self.gitStream.write(labelDetails["Description"])
 808                    self.gitStream.write("EOT\n\n")
 809
 810                else:
 811                    if not self.silent:
 812                        print ("Tag %s does not match with change %s: files do not match."
 813                               % (labelDetails["label"], change))
 814
 815            else:
 816                if not self.silent:
 817                    print ("Tag %s does not match with change %s: file count is different."
 818                           % (labelDetails["label"], change))
 819
 820    def getUserCacheFilename(self):
 821        return os.environ["HOME"] + "/.gitp4-usercache.txt"
 822
 823    def getUserMapFromPerforceServer(self):
 824        if self.userMapFromPerforceServer:
 825            return
 826        self.users = {}
 827
 828        for output in p4CmdList("users"):
 829            if not output.has_key("User"):
 830                continue
 831            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 832
 833
 834        s = ''
 835        for (key, val) in self.users.items():
 836            s += "%s\t%s\n" % (key, val)
 837
 838        open(self.getUserCacheFilename(), "wb").write(s)
 839        self.userMapFromPerforceServer = True
 840
 841    def loadUserMapFromCache(self):
 842        self.users = {}
 843        self.userMapFromPerforceServer = False
 844        try:
 845            cache = open(self.getUserCacheFilename(), "rb")
 846            lines = cache.readlines()
 847            cache.close()
 848            for line in lines:
 849                entry = line.strip().split("\t")
 850                self.users[entry[0]] = entry[1]
 851        except IOError:
 852            self.getUserMapFromPerforceServer()
 853
 854    def getLabels(self):
 855        self.labels = {}
 856
 857        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 858        if len(l) > 0 and not self.silent:
 859            print "Finding files belonging to labels in %s" % `self.depotPath`
 860
 861        for output in l:
 862            label = output["label"]
 863            revisions = {}
 864            newestChange = 0
 865            if self.verbose:
 866                print "Querying files for label %s" % label
 867            for file in p4CmdList("files "
 868                                  +  ' '.join (["%s...@%s" % (p, label)
 869                                                for p in self.depotPaths])):
 870                revisions[file["depotFile"]] = file["rev"]
 871                change = int(file["change"])
 872                if change > newestChange:
 873                    newestChange = change
 874
 875            self.labels[newestChange] = [output, revisions]
 876
 877        if self.verbose:
 878            print "Label changes: %s" % self.labels.keys()
 879
 880    def guessProjectName(self):
 881        for p in self.depotPaths:
 882            return p [p.strip().rfind("/") + 1:]
 883
 884    def getBranchMapping(self):
 885
 886        ## FIXME - what's a P4 projectName ?
 887        self.projectName = self.guessProjectName()
 888
 889        for info in p4CmdList("branches"):
 890            details = p4Cmd("branch -o %s" % info["branch"])
 891            viewIdx = 0
 892            while details.has_key("View%s" % viewIdx):
 893                paths = details["View%s" % viewIdx].split(" ")
 894                viewIdx = viewIdx + 1
 895                # require standard //depot/foo/... //depot/bar/... mapping
 896                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 897                    continue
 898                source = paths[0]
 899                destination = paths[1]
 900                if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 901                    source = source[len(self.depotPath):-4]
 902                    destination = destination[len(self.depotPath):-4]
 903                    if destination not in self.knownBranches:
 904                        self.knownBranches[destination] = source
 905                    if source not in self.knownBranches:
 906                        self.knownBranches[source] = source
 907
 908    def listExistingP4GitBranches(self):
 909        self.p4BranchesInGit = []
 910
 911        cmdline = "git rev-parse --symbolic "
 912        if self.importIntoRemotes:
 913            cmdline += " --remotes"
 914        else:
 915            cmdline += " --branches"
 916
 917        for line in read_pipe_lines(cmdline):
 918            line = line.strip()
 919
 920            ## only import to p4/
 921            if not line.startswith('p4/'):
 922                continue
 923            branch = line
 924            if self.importIntoRemotes:
 925                # strip off p4
 926                branch = re.sub ("^p4/", "", line)
 927
 928            self.p4BranchesInGit.append(branch)
 929            self.initialParents[self.refPrefix + branch] = parseRevision(line)
 930
 931    def createOrUpdateBranchesFromOrigin(self):
 932        if not self.silent:
 933            print ("Creating/updating branch(es) in %s based on origin branch(es)"
 934                   % self.refPrefix)
 935
 936        for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 937            line = line.strip()
 938            if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 939                continue
 940
 941            headName = line[len("origin/"):]
 942            remoteHead = self.refPrefix + headName
 943            originHead = "origin/" + headName
 944
 945            original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 946            if (not original.has_key('depot-paths')
 947                or not original.has_key('change')):
 948                continue
 949
 950            update = False
 951            if not gitBranchExists(remoteHead):
 952                if self.verbose:
 953                    print "creating %s" % remoteHead
 954                update = True
 955            else:
 956                settings =  extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 957                if settings.has_key('change') > 0:
 958                    if settings['depot-paths'] == original['depot-paths']:
 959                        originP4Change = int(original['change'])
 960                        p4Change = int(settings['change'])
 961                        if originP4Change > p4Change:
 962                            print ("%s (%s) is newer than %s (%s). "
 963                                   "Updating p4 branch from origin."
 964                                   % (originHead, originP4Change,
 965                                      remoteHead, p4Change))
 966                            update = True
 967                    else:
 968                        print ("Ignoring: %s was imported from %s while "
 969                               "%s was imported from %s"
 970                               % (originHead, ','.join(original['depot-paths']),
 971                                  remoteHead, ','.join(settings['depot-paths'])))
 972
 973            if update:
 974                system("git update-ref %s %s" % (remoteHead, originHead))
 975
 976    def updateOptionDict(self, d):
 977        option_keys = {}
 978        if self.keepRepoPath:
 979            option_keys['keepRepoPath'] = 1
 980
 981        d["options"] = ' '.join(sorted(option_keys.keys()))
 982
 983    def readOptions(self, d):
 984        self.keepRepoPath = (d.has_key('options')
 985                             and ('keepRepoPath' in d['options']))
 986
 987    def run(self, args):
 988        self.depotPaths = []
 989        self.changeRange = ""
 990        self.initialParent = ""
 991        self.previousDepotPaths = []
 992
 993        # map from branch depot path to parent branch
 994        self.knownBranches = {}
 995        self.initialParents = {}
 996        self.hasOrigin = gitBranchExists("origin")
 997
 998        if self.importIntoRemotes:
 999            self.refPrefix = "refs/remotes/p4/"
1000        else:
1001            self.refPrefix = "refs/heads/"
1002
1003        if self.syncWithOrigin and self.hasOrigin:
1004            if not self.silent:
1005                print "Syncing with origin first by calling git fetch origin"
1006            system("git fetch origin")
1007
1008        if len(self.branch) == 0:
1009            self.branch = self.refPrefix + "p4/master"
1010            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1011                system("git update-ref %s refs/heads/p4" % self.branch)
1012                system("git branch -D p4");
1013            # create it /after/ importing, when master exists
1014            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1015                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1016
1017        # TODO: should always look at previous commits,
1018        # merge with previous imports, if possible.
1019        if args == []:
1020            if self.hasOrigin:
1021                self.createOrUpdateBranchesFromOrigin()
1022            self.listExistingP4GitBranches()
1023
1024            if len(self.p4BranchesInGit) > 1:
1025                if not self.silent:
1026                    print "Importing from/into multiple branches"
1027                self.detectBranches = True
1028
1029            if self.verbose:
1030                print "branches: %s" % self.p4BranchesInGit
1031
1032            p4Change = 0
1033            for branch in self.p4BranchesInGit:
1034                print self.p4BranchesInGit
1035                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1036
1037                settings = extractSettingsGitLog(logMsg)
1038
1039                self.readOptions(settings)
1040                if (settings.has_key('depot-paths')
1041                    and settings.has_key ('change')):
1042                    change = int(settings['change']) + 1
1043                    p4Change = max(p4Change, change)
1044
1045                    depotPaths = sorted(settings['depot-paths'])
1046                    if self.previousDepotPaths == []:
1047                        self.previousDepotPaths = depotPaths
1048                    else:
1049                        paths = []
1050                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1051                            for i in range(0, max(len(cur), len(prev))):
1052                                if cur[i] <> prev[i]:
1053                                    break
1054
1055                            paths.append (cur[:i])
1056
1057                        self.previousDepotPaths = paths
1058
1059            if p4Change > 0:
1060                self.depotPaths = sorted(self.previousDepotPaths)
1061                self.changeRange = "@%s,#head" % p4Change
1062                self.initialParent = parseRevision(self.branch)
1063                if not self.silent and not self.detectBranches:
1064                    print "Performing incremental import into %s git branch" % self.branch
1065
1066        if not self.branch.startswith("refs/"):
1067            self.branch = "refs/heads/" + self.branch
1068
1069        if len(args) == 0 and self.depotPaths:
1070            if not self.silent:
1071                print "Depot paths: %s" % ' '.join(self.depotPaths)
1072        else:
1073            if self.depotPaths and self.depotPaths != args:
1074                print ("previous import used depot path %s and now %s was specified. "
1075                       "This doesn't work!" % (' '.join (self.depotPaths),
1076                                               ' '.join (args)))
1077                sys.exit(1)
1078
1079            self.depotPaths = sorted(args)
1080
1081        self.revision = ""
1082        self.users = {}
1083
1084        newPaths = []
1085        for p in self.depotPaths:
1086            if p.find("@") != -1:
1087                atIdx = p.index("@")
1088                self.changeRange = p[atIdx:]
1089                if self.changeRange == "@all":
1090                    self.changeRange = ""
1091                elif ',' not in self.changeRange:
1092                    self.revision = self.changeRange
1093                    self.changeRange = ""
1094                p = p[0:atIdx]
1095            elif p.find("#") != -1:
1096                hashIdx = p.index("#")
1097                self.revision = p[hashIdx:]
1098                p = p[0:hashIdx]
1099            elif self.previousDepotPaths == []:
1100                self.revision = "#head"
1101
1102            p = re.sub ("\.\.\.$", "", p)
1103            if not p.endswith("/"):
1104                p += "/"
1105
1106            newPaths.append(p)
1107
1108        self.depotPaths = newPaths
1109
1110
1111        self.loadUserMapFromCache()
1112        self.labels = {}
1113        if self.detectLabels:
1114            self.getLabels();
1115
1116        if self.detectBranches:
1117            self.getBranchMapping();
1118            if self.verbose:
1119                print "p4-git branches: %s" % self.p4BranchesInGit
1120                print "initial parents: %s" % self.initialParents
1121            for b in self.p4BranchesInGit:
1122                if b != "master":
1123
1124                    ## FIXME
1125                    b = b[len(self.projectName):]
1126                self.createdBranches.add(b)
1127
1128        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1129
1130        importProcess = subprocess.Popen(["git", "fast-import"],
1131                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1132                                         stderr=subprocess.PIPE);
1133        self.gitOutput = importProcess.stdout
1134        self.gitStream = importProcess.stdin
1135        self.gitError = importProcess.stderr
1136
1137        if self.revision:
1138            print "Doing initial import of %s from revision %s" % (' '.join(self.depotPaths), self.revision)
1139
1140            details = { "user" : "git perforce import user", "time" : int(time.time()) }
1141            details["desc"] = ("Initial import of %s from the state at revision %s"
1142                               % (' '.join(self.depotPaths), self.revision))
1143            details["change"] = self.revision
1144            newestRevision = 0
1145
1146            fileCnt = 0
1147            for info in p4CmdList("files "
1148                                  +  ' '.join(["%s...%s"
1149                                               % (p, self.revision)
1150                                               for p in self.depotPaths])):
1151
1152                if info['code'] == 'error':
1153                    sys.stderr.write("p4 returned an error: %s\n"
1154                                     % info['data'])
1155                    sys.exit(1)
1156
1157
1158                change = int(info["change"])
1159                if change > newestRevision:
1160                    newestRevision = change
1161
1162                if info["action"] == "delete":
1163                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1164                    #fileCnt = fileCnt + 1
1165                    continue
1166
1167                for prop in ["depotFile", "rev", "action", "type" ]:
1168                    details["%s%s" % (prop, fileCnt)] = info[prop]
1169
1170                fileCnt = fileCnt + 1
1171
1172            details["change"] = newestRevision
1173            self.updateOptionDict(details)
1174            try:
1175                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1176            except IOError:
1177                print "IO error with git fast-import. Is your git version recent enough?"
1178                print self.gitError.read()
1179
1180        else:
1181            changes = []
1182
1183            if len(self.changesFile) > 0:
1184                output = open(self.changesFile).readlines()
1185                changeSet = Set()
1186                for line in output:
1187                    changeSet.add(int(line))
1188
1189                for change in changeSet:
1190                    changes.append(change)
1191
1192                changes.sort()
1193            else:
1194                if self.verbose:
1195                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1196                                                              self.changeRange)
1197                assert self.depotPaths
1198                output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1199                                                                    for p in self.depotPaths]))
1200
1201                for line in output:
1202                    changeNum = line.split(" ")[1]
1203                    changes.append(changeNum)
1204
1205                changes.reverse()
1206
1207                if len(self.maxChanges) > 0:
1208                    changes = changes[0:min(int(self.maxChanges), len(changes))]
1209
1210            if len(changes) == 0:
1211                if not self.silent:
1212                    print "No changes to import!"
1213                return True
1214
1215            self.updatedBranches = set()
1216
1217            cnt = 1
1218            for change in changes:
1219                description = p4Cmd("describe %s" % change)
1220                self.updateOptionDict(description)
1221
1222                if not self.silent:
1223                    sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1224                    sys.stdout.flush()
1225                cnt = cnt + 1
1226
1227                try:
1228                    if self.detectBranches:
1229                        branches = self.splitFilesIntoBranches(description)
1230                        for branch in branches.keys():
1231                            ## HACK  --hwn
1232                            branchPrefix = self.depotPaths[0] + branch + "/"
1233
1234                            parent = ""
1235
1236                            filesForCommit = branches[branch]
1237
1238                            if self.verbose:
1239                                print "branch is %s" % branch
1240
1241                            self.updatedBranches.add(branch)
1242
1243                            if branch not in self.createdBranches:
1244                                self.createdBranches.add(branch)
1245                                parent = self.knownBranches[branch]
1246                                if parent == branch:
1247                                    parent = ""
1248                                elif self.verbose:
1249                                    print "parent determined through known branches: %s" % parent
1250
1251                            # main branch? use master
1252                            if branch == "main":
1253                                branch = "master"
1254                            else:
1255
1256                                ## FIXME
1257                                branch = self.projectName + branch
1258
1259                            if parent == "main":
1260                                parent = "master"
1261                            elif len(parent) > 0:
1262                                ## FIXME
1263                                parent = self.projectName + parent
1264
1265                            branch = self.refPrefix + branch
1266                            if len(parent) > 0:
1267                                parent = self.refPrefix + parent
1268
1269                            if self.verbose:
1270                                print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1271
1272                            if len(parent) == 0 and branch in self.initialParents:
1273                                parent = self.initialParents[branch]
1274                                del self.initialParents[branch]
1275
1276                            self.commit(description, filesForCommit, branch, branchPrefix, parent)
1277                    else:
1278                        files = self.extractFilesFromCommit(description)
1279                        self.commit(description, files, self.branch, self.depotPaths,
1280                                    self.initialParent)
1281                        self.initialParent = ""
1282                except IOError:
1283                    print self.gitError.read()
1284                    sys.exit(1)
1285
1286            if not self.silent:
1287                print ""
1288                if len(self.updatedBranches) > 0:
1289                    sys.stdout.write("Updated branches: ")
1290                    for b in self.updatedBranches:
1291                        sys.stdout.write("%s " % b)
1292                    sys.stdout.write("\n")
1293
1294
1295        self.gitStream.close()
1296        if importProcess.wait() != 0:
1297            die("fast-import failed: %s" % self.gitError.read())
1298        self.gitOutput.close()
1299        self.gitError.close()
1300
1301        return True
1302
1303class P4Rebase(Command):
1304    def __init__(self):
1305        Command.__init__(self)
1306        self.options = [ ]
1307        self.description = ("Fetches the latest revision from perforce and "
1308                            + "rebases the current work (branch) against it")
1309
1310    def run(self, args):
1311        sync = P4Sync()
1312        sync.run([])
1313        print "Rebasing the current branch"
1314        oldHead = read_pipe("git rev-parse HEAD").strip()
1315        system("git rebase p4")
1316        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1317        return True
1318
1319class P4Clone(P4Sync):
1320    def __init__(self):
1321        P4Sync.__init__(self)
1322        self.description = "Creates a new git repository and imports from Perforce into it"
1323        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1324        self.options.append(
1325            optparse.make_option("--destination", dest="cloneDestination",
1326                                 action='store', default=None,
1327                                 help="where to leave result of the clone"))
1328        self.cloneDestination = None
1329        self.needsGit = False
1330
1331    def defaultDestination(self, args):
1332        ## TODO: use common prefix of args?
1333        depotPath = args[0]
1334        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1335        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1336        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1337        depotDir = re.sub(r"/$", "", depotDir)
1338        return os.path.split(depotDir)[1]
1339
1340    def run(self, args):
1341        if len(args) < 1:
1342            return False
1343
1344        if self.keepRepoPath and not self.cloneDestination:
1345            sys.stderr.write("Must specify destination for --keep-path\n")
1346            sys.exit(1)
1347
1348        depotPaths = args
1349        for p in depotPaths:
1350            if not p.startswith("//"):
1351                return False
1352
1353        if not self.cloneDestination:
1354            self.cloneDestination = self.defaultDestination()
1355
1356        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1357        os.makedirs(self.cloneDestination)
1358        os.chdir(self.cloneDestination)
1359        system("git init")
1360        self.gitdir = os.getcwd() + "/.git"
1361        if not P4Sync.run(self, depotPaths):
1362            return False
1363        if self.branch != "master":
1364            if gitBranchExists("refs/remotes/p4/master"):
1365                system("git branch master refs/remotes/p4/master")
1366                system("git checkout -f")
1367            else:
1368                print "Could not detect main branch. No checkout/master branch created."
1369
1370        return True
1371
1372class HelpFormatter(optparse.IndentedHelpFormatter):
1373    def __init__(self):
1374        optparse.IndentedHelpFormatter.__init__(self)
1375
1376    def format_description(self, description):
1377        if description:
1378            return description + "\n"
1379        else:
1380            return ""
1381
1382def printUsage(commands):
1383    print "usage: %s <command> [options]" % sys.argv[0]
1384    print ""
1385    print "valid commands: %s" % ", ".join(commands)
1386    print ""
1387    print "Try %s <command> --help for command specific help." % sys.argv[0]
1388    print ""
1389
1390commands = {
1391    "debug" : P4Debug,
1392    "submit" : P4Submit,
1393    "sync" : P4Sync,
1394    "rebase" : P4Rebase,
1395    "clone" : P4Clone,
1396    "rollback" : P4RollBack
1397}
1398
1399
1400def main():
1401    if len(sys.argv[1:]) == 0:
1402        printUsage(commands.keys())
1403        sys.exit(2)
1404
1405    cmd = ""
1406    cmdName = sys.argv[1]
1407    try:
1408        klass = commands[cmdName]
1409        cmd = klass()
1410    except KeyError:
1411        print "unknown command %s" % cmdName
1412        print ""
1413        printUsage(commands.keys())
1414        sys.exit(2)
1415
1416    options = cmd.options
1417    cmd.gitdir = os.environ.get("GIT_DIR", None)
1418
1419    args = sys.argv[2:]
1420
1421    if len(options) > 0:
1422        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1423
1424        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1425                                       options,
1426                                       description = cmd.description,
1427                                       formatter = HelpFormatter())
1428
1429        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1430    global verbose
1431    verbose = cmd.verbose
1432    if cmd.needsGit:
1433        if cmd.gitdir == None:
1434            cmd.gitdir = os.path.abspath(".git")
1435            if not isValidGitDir(cmd.gitdir):
1436                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1437                if os.path.exists(cmd.gitdir):
1438                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1439                    if len(cdup) > 0:
1440                        os.chdir(cdup);
1441
1442        if not isValidGitDir(cmd.gitdir):
1443            if isValidGitDir(cmd.gitdir + "/.git"):
1444                cmd.gitdir += "/.git"
1445            else:
1446                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1447
1448        os.environ["GIT_DIR"] = cmd.gitdir
1449
1450    if not cmd.run(args):
1451        parser.print_help()
1452
1453
1454if __name__ == '__main__':
1455    main()