Andrew's git / gitweb.git / contrib/fast-import/git-p4
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contrib / fast-import / git-p4on commit Fix support for "depot-path" in older git-p4 imports (845b42c)
   1#!/usr/bin/env python
   2#
   3# git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4#
   5# Author: Simon Hausmann <simon@lst.de>
   6# Copyright: 2007 Simon Hausmann <simon@lst.de>
   7#            2007 Trolltech ASA
   8# License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9#
  10
  11import optparse, sys, os, marshal, popen2, subprocess, shelve
  12import tempfile, getopt, sha, os.path, time, platform
  13import re
  14
  15from sets import Set;
  16
  17verbose = False
  18
  19def die(msg):
  20    if verbose:
  21        raise Exception(msg)
  22    else:
  23        sys.stderr.write(msg + "\n")
  24        sys.exit(1)
  25
  26def write_pipe(c, str):
  27    if verbose:
  28        sys.stderr.write('Writing pipe: %s\n' % c)
  29
  30    pipe = os.popen(c, 'w')
  31    val = pipe.write(str)
  32    if pipe.close():
  33        die('Command failed: %s' % c)
  34
  35    return val
  36
  37def read_pipe(c, ignore_error=False):
  38    if verbose:
  39        sys.stderr.write('Reading pipe: %s\n' % c)
  40
  41    pipe = os.popen(c, 'rb')
  42    val = pipe.read()
  43    if pipe.close() and not ignore_error:
  44        die('Command failed: %s' % c)
  45
  46    return val
  47
  48
  49def read_pipe_lines(c):
  50    if verbose:
  51        sys.stderr.write('Reading pipe: %s\n' % c)
  52    ## todo: check return status
  53    pipe = os.popen(c, 'rb')
  54    val = pipe.readlines()
  55    if pipe.close():
  56        die('Command failed: %s' % c)
  57
  58    return val
  59
  60def system(cmd):
  61    if verbose:
  62        sys.stderr.write("executing %s\n" % cmd)
  63    if os.system(cmd) != 0:
  64        die("command failed: %s" % cmd)
  65
  66def p4CmdList(cmd):
  67    cmd = "p4 -G %s" % cmd
  68    if verbose:
  69        sys.stderr.write("Opening pipe: %s\n" % cmd)
  70    pipe = os.popen(cmd, "rb")
  71
  72    result = []
  73    try:
  74        while True:
  75            entry = marshal.load(pipe)
  76            result.append(entry)
  77    except EOFError:
  78        pass
  79    exitCode = pipe.close()
  80    if exitCode != None:
  81        entry = {}
  82        entry["p4ExitCode"] = exitCode
  83        result.append(entry)
  84
  85    return result
  86
  87def p4Cmd(cmd):
  88    list = p4CmdList(cmd)
  89    result = {}
  90    for entry in list:
  91        result.update(entry)
  92    return result;
  93
  94def p4Where(depotPath):
  95    if not depotPath.endswith("/"):
  96        depotPath += "/"
  97    output = p4Cmd("where %s..." % depotPath)
  98    if output["code"] == "error":
  99        return ""
 100    clientPath = ""
 101    if "path" in output:
 102        clientPath = output.get("path")
 103    elif "data" in output:
 104        data = output.get("data")
 105        lastSpace = data.rfind(" ")
 106        clientPath = data[lastSpace + 1:]
 107
 108    if clientPath.endswith("..."):
 109        clientPath = clientPath[:-3]
 110    return clientPath
 111
 112def currentGitBranch():
 113    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 114
 115def isValidGitDir(path):
 116    if (os.path.exists(path + "/HEAD")
 117        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 118        return True;
 119    return False
 120
 121def parseRevision(ref):
 122    return read_pipe("git rev-parse %s" % ref).strip()
 123
 124def extractLogMessageFromGitCommit(commit):
 125    logMessage = ""
 126
 127    ## fixme: title is first line of commit, not 1st paragraph.
 128    foundTitle = False
 129    for log in read_pipe_lines("git cat-file commit %s" % commit):
 130       if not foundTitle:
 131           if len(log) == 1:
 132               foundTitle = True
 133           continue
 134
 135       logMessage += log
 136    return logMessage
 137
 138def extractSettingsGitLog(log):
 139    values = {}
 140    for line in log.split("\n"):
 141        line = line.strip()
 142        m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 143        if not m:
 144            continue
 145
 146        assignments = m.group(1).split (':')
 147        for a in assignments:
 148            vals = a.split ('=')
 149            key = vals[0].strip()
 150            val = ('='.join (vals[1:])).strip()
 151            if val.endswith ('\"') and val.startswith('"'):
 152                val = val[1:-1]
 153
 154            values[key] = val
 155
 156    paths = values.get("depot-paths")
 157    if not paths:
 158        paths = values.get("depot-path")
 159    values['depot-paths'] = paths.split(',')
 160    return values
 161
 162def gitBranchExists(branch):
 163    proc = subprocess.Popen(["git", "rev-parse", branch],
 164                            stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 165    return proc.wait() == 0;
 166
 167def gitConfig(key):
 168    return read_pipe("git config %s" % key, ignore_error=True).strip()
 169
 170class Command:
 171    def __init__(self):
 172        self.usage = "usage: %prog [options]"
 173        self.needsGit = True
 174
 175class P4Debug(Command):
 176    def __init__(self):
 177        Command.__init__(self)
 178        self.options = [
 179            optparse.make_option("--verbose", dest="verbose", action="store_true",
 180                                 default=False),
 181            ]
 182        self.description = "A tool to debug the output of p4 -G."
 183        self.needsGit = False
 184        self.verbose = False
 185
 186    def run(self, args):
 187        j = 0
 188        for output in p4CmdList(" ".join(args)):
 189            print 'Element: %d' % j
 190            j += 1
 191            print output
 192        return True
 193
 194class P4RollBack(Command):
 195    def __init__(self):
 196        Command.__init__(self)
 197        self.options = [
 198            optparse.make_option("--verbose", dest="verbose", action="store_true"),
 199            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 200        ]
 201        self.description = "A tool to debug the multi-branch import. Don't use :)"
 202        self.verbose = False
 203        self.rollbackLocalBranches = False
 204
 205    def run(self, args):
 206        if len(args) != 1:
 207            return False
 208        maxChange = int(args[0])
 209
 210        if "p4ExitCode" in p4Cmd("changes -m 1"):
 211            die("Problems executing p4");
 212
 213        if self.rollbackLocalBranches:
 214            refPrefix = "refs/heads/"
 215            lines = read_pipe_lines("git rev-parse --symbolic --branches")
 216        else:
 217            refPrefix = "refs/remotes/"
 218            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 219
 220        for line in lines:
 221            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 222                line = line.strip()
 223                ref = refPrefix + line
 224                log = extractLogMessageFromGitCommit(ref)
 225                settings = extractSettingsGitLog(log)
 226
 227                depotPaths = settings['depot-paths']
 228                change = settings['change']
 229
 230                changed = False
 231
 232                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 233                                                           for p in depotPaths]))) == 0:
 234                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 235                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 236                    continue
 237
 238                while change and int(change) > maxChange:
 239                    changed = True
 240                    if self.verbose:
 241                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 242                    system("git update-ref %s \"%s^\"" % (ref, ref))
 243                    log = extractLogMessageFromGitCommit(ref)
 244                    settings =  extractSettingsGitLog(log)
 245
 246
 247                    depotPaths = settings['depot-paths']
 248                    change = settings['change']
 249
 250                if changed:
 251                    print "%s rewound to %s" % (ref, change)
 252
 253        return True
 254
 255class P4Submit(Command):
 256    def __init__(self):
 257        Command.__init__(self)
 258        self.options = [
 259                optparse.make_option("--continue", action="store_false", dest="firstTime"),
 260                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 261                optparse.make_option("--origin", dest="origin"),
 262                optparse.make_option("--reset", action="store_true", dest="reset"),
 263                optparse.make_option("--log-substitutions", dest="substFile"),
 264                optparse.make_option("--dry-run", action="store_true"),
 265                optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 266                optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 267        ]
 268        self.description = "Submit changes from git to the perforce depot."
 269        self.usage += " [name of git branch to submit into perforce depot]"
 270        self.firstTime = True
 271        self.reset = False
 272        self.interactive = True
 273        self.dryRun = False
 274        self.substFile = ""
 275        self.firstTime = True
 276        self.origin = ""
 277        self.directSubmit = False
 278        self.trustMeLikeAFool = False
 279
 280        self.logSubstitutions = {}
 281        self.logSubstitutions["<enter description here>"] = "%log%"
 282        self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 283
 284    def check(self):
 285        if len(p4CmdList("opened ...")) > 0:
 286            die("You have files opened with perforce! Close them before starting the sync.")
 287
 288    def start(self):
 289        if len(self.config) > 0 and not self.reset:
 290            die("Cannot start sync. Previous sync config found at %s\n"
 291                "If you want to start submitting again from scratch "
 292                "maybe you want to call git-p4 submit --reset" % self.configFile)
 293
 294        commits = []
 295        if self.directSubmit:
 296            commits.append("0")
 297        else:
 298            for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 299                commits.append(line.strip())
 300            commits.reverse()
 301
 302        self.config["commits"] = commits
 303
 304    def prepareLogMessage(self, template, message):
 305        result = ""
 306
 307        for line in template.split("\n"):
 308            if line.startswith("#"):
 309                result += line + "\n"
 310                continue
 311
 312            substituted = False
 313            for key in self.logSubstitutions.keys():
 314                if line.find(key) != -1:
 315                    value = self.logSubstitutions[key]
 316                    value = value.replace("%log%", message)
 317                    if value != "@remove@":
 318                        result += line.replace(key, value) + "\n"
 319                    substituted = True
 320                    break
 321
 322            if not substituted:
 323                result += line + "\n"
 324
 325        return result
 326
 327    def applyCommit(self, id):
 328        if self.directSubmit:
 329            print "Applying local change in working directory/index"
 330            diff = self.diffStatus
 331        else:
 332            print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 333            diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 334        filesToAdd = set()
 335        filesToDelete = set()
 336        editedFiles = set()
 337        for line in diff:
 338            modifier = line[0]
 339            path = line[1:].strip()
 340            if modifier == "M":
 341                system("p4 edit \"%s\"" % path)
 342                editedFiles.add(path)
 343            elif modifier == "A":
 344                filesToAdd.add(path)
 345                if path in filesToDelete:
 346                    filesToDelete.remove(path)
 347            elif modifier == "D":
 348                filesToDelete.add(path)
 349                if path in filesToAdd:
 350                    filesToAdd.remove(path)
 351            else:
 352                die("unknown modifier %s for %s" % (modifier, path))
 353
 354        if self.directSubmit:
 355            diffcmd = "cat \"%s\"" % self.diffFile
 356        else:
 357            diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 358        patchcmd = diffcmd + " | git apply "
 359        tryPatchCmd = patchcmd + "--check -"
 360        applyPatchCmd = patchcmd + "--check --apply -"
 361
 362        if os.system(tryPatchCmd) != 0:
 363            print "Unfortunately applying the change failed!"
 364            print "What do you want to do?"
 365            response = "x"
 366            while response != "s" and response != "a" and response != "w":
 367                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 368                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 369            if response == "s":
 370                print "Skipping! Good luck with the next patches..."
 371                return
 372            elif response == "a":
 373                os.system(applyPatchCmd)
 374                if len(filesToAdd) > 0:
 375                    print "You may also want to call p4 add on the following files:"
 376                    print " ".join(filesToAdd)
 377                if len(filesToDelete):
 378                    print "The following files should be scheduled for deletion with p4 delete:"
 379                    print " ".join(filesToDelete)
 380                die("Please resolve and submit the conflict manually and "
 381                    + "continue afterwards with git-p4 submit --continue")
 382            elif response == "w":
 383                system(diffcmd + " > patch.txt")
 384                print "Patch saved to patch.txt in %s !" % self.clientPath
 385                die("Please resolve and submit the conflict manually and "
 386                    "continue afterwards with git-p4 submit --continue")
 387
 388        system(applyPatchCmd)
 389
 390        for f in filesToAdd:
 391            system("p4 add %s" % f)
 392        for f in filesToDelete:
 393            system("p4 revert %s" % f)
 394            system("p4 delete %s" % f)
 395
 396        logMessage = ""
 397        if not self.directSubmit:
 398            logMessage = extractLogMessageFromGitCommit(id)
 399            logMessage = logMessage.replace("\n", "\n\t")
 400            logMessage = logMessage.strip()
 401
 402        template = read_pipe("p4 change -o")
 403
 404        if self.interactive:
 405            submitTemplate = self.prepareLogMessage(template, logMessage)
 406            diff = read_pipe("p4 diff -du ...")
 407
 408            for newFile in filesToAdd:
 409                diff += "==== new file ====\n"
 410                diff += "--- /dev/null\n"
 411                diff += "+++ %s\n" % newFile
 412                f = open(newFile, "r")
 413                for line in f.readlines():
 414                    diff += "+" + line
 415                f.close()
 416
 417            separatorLine = "######## everything below this line is just the diff #######"
 418            if platform.system() == "Windows":
 419                separatorLine += "\r"
 420            separatorLine += "\n"
 421
 422            response = "e"
 423            if self.trustMeLikeAFool:
 424                response = "y"
 425
 426            firstIteration = True
 427            while response == "e":
 428                if not firstIteration:
 429                    response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 430                firstIteration = False
 431                if response == "e":
 432                    [handle, fileName] = tempfile.mkstemp()
 433                    tmpFile = os.fdopen(handle, "w+")
 434                    tmpFile.write(submitTemplate + separatorLine + diff)
 435                    tmpFile.close()
 436                    defaultEditor = "vi"
 437                    if platform.system() == "Windows":
 438                        defaultEditor = "notepad"
 439                    editor = os.environ.get("EDITOR", defaultEditor);
 440                    system(editor + " " + fileName)
 441                    tmpFile = open(fileName, "rb")
 442                    message = tmpFile.read()
 443                    tmpFile.close()
 444                    os.remove(fileName)
 445                    submitTemplate = message[:message.index(separatorLine)]
 446
 447            if response == "y" or response == "yes":
 448               if self.dryRun:
 449                   print submitTemplate
 450                   raw_input("Press return to continue...")
 451               else:
 452                   if self.directSubmit:
 453                       print "Submitting to git first"
 454                       os.chdir(self.oldWorkingDirectory)
 455                       write_pipe("git commit -a -F -", submitTemplate)
 456                       os.chdir(self.clientPath)
 457
 458                   write_pipe("p4 submit -i", submitTemplate)
 459            elif response == "s":
 460                for f in editedFiles:
 461                    system("p4 revert \"%s\"" % f);
 462                for f in filesToAdd:
 463                    system("p4 revert \"%s\"" % f);
 464                    system("rm %s" %f)
 465                for f in filesToDelete:
 466                    system("p4 delete \"%s\"" % f);
 467                return
 468            else:
 469                print "Not submitting!"
 470                self.interactive = False
 471        else:
 472            fileName = "submit.txt"
 473            file = open(fileName, "w+")
 474            file.write(self.prepareLogMessage(template, logMessage))
 475            file.close()
 476            print ("Perforce submit template written as %s. "
 477                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 478                   % (fileName, fileName))
 479
 480    def run(self, args):
 481        # make gitdir absolute so we can cd out into the perforce checkout
 482        os.environ["GIT_DIR"] = gitdir
 483
 484        if len(args) == 0:
 485            self.master = currentGitBranch()
 486            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 487                die("Detecting current git branch failed!")
 488        elif len(args) == 1:
 489            self.master = args[0]
 490        else:
 491            return False
 492
 493        depotPath = ""
 494        settings = None
 495        if gitBranchExists("p4"):
 496            settings = extractSettingsGitLog(extractLogMessageFromGitCommit("p4"))
 497        if len(depotPath) == 0 and gitBranchExists("origin"):
 498            settings = extractSettingsGitLog(extractLogMessageFromGitCommit("origin"))
 499        depotPaths = settings['depot-paths']
 500
 501        if len(depotPath) == 0:
 502            print "Internal error: cannot locate perforce depot path from existing branches"
 503            sys.exit(128)
 504
 505        self.clientPath = p4Where(depotPath)
 506
 507        if len(self.clientPath) == 0:
 508            print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 509            sys.exit(128)
 510
 511        print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 512        self.oldWorkingDirectory = os.getcwd()
 513
 514        if self.directSubmit:
 515            self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 516            if len(self.diffStatus) == 0:
 517                print "No changes in working directory to submit."
 518                return True
 519            patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 520            self.diffFile = self.gitdir + "/p4-git-diff"
 521            f = open(self.diffFile, "wb")
 522            f.write(patch)
 523            f.close();
 524
 525        os.chdir(self.clientPath)
 526        response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 527        if response == "y" or response == "yes":
 528            system("p4 sync ...")
 529
 530        if len(self.origin) == 0:
 531            if gitBranchExists("p4"):
 532                self.origin = "p4"
 533            else:
 534                self.origin = "origin"
 535
 536        if self.reset:
 537            self.firstTime = True
 538
 539        if len(self.substFile) > 0:
 540            for line in open(self.substFile, "r").readlines():
 541                tokens = line.strip().split("=")
 542                self.logSubstitutions[tokens[0]] = tokens[1]
 543
 544        self.check()
 545        self.configFile = self.gitdir + "/p4-git-sync.cfg"
 546        self.config = shelve.open(self.configFile, writeback=True)
 547
 548        if self.firstTime:
 549            self.start()
 550
 551        commits = self.config.get("commits", [])
 552
 553        while len(commits) > 0:
 554            self.firstTime = False
 555            commit = commits[0]
 556            commits = commits[1:]
 557            self.config["commits"] = commits
 558            self.applyCommit(commit)
 559            if not self.interactive:
 560                break
 561
 562        self.config.close()
 563
 564        if self.directSubmit:
 565            os.remove(self.diffFile)
 566
 567        if len(commits) == 0:
 568            if self.firstTime:
 569                print "No changes found to apply between %s and current HEAD" % self.origin
 570            else:
 571                print "All changes applied!"
 572                os.chdir(self.oldWorkingDirectory)
 573                response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 574                if response == "y" or response == "yes":
 575                    rebase = P4Rebase()
 576                    rebase.run([])
 577            os.remove(self.configFile)
 578
 579        return True
 580
 581class P4Sync(Command):
 582    def __init__(self):
 583        Command.__init__(self)
 584        self.options = [
 585                optparse.make_option("--branch", dest="branch"),
 586                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 587                optparse.make_option("--changesfile", dest="changesFile"),
 588                optparse.make_option("--silent", dest="silent", action="store_true"),
 589                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 590                optparse.make_option("--verbose", dest="verbose", action="store_true"),
 591                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 592                                     help="Import into refs/heads/ , not refs/remotes"),
 593                optparse.make_option("--max-changes", dest="maxChanges"),
 594                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 595                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 596        ]
 597        self.description = """Imports from Perforce into a git repository.\n
 598    example:
 599    //depot/my/project/ -- to import the current head
 600    //depot/my/project/@all -- to import everything
 601    //depot/my/project/@1,6 -- to import only from revision 1 to 6
 602
 603    (a ... is not needed in the path p4 specification, it's added implicitly)"""
 604
 605        self.usage += " //depot/path[@revRange]"
 606        self.silent = False
 607        self.createdBranches = Set()
 608        self.committedChanges = Set()
 609        self.branch = ""
 610        self.detectBranches = False
 611        self.detectLabels = False
 612        self.changesFile = ""
 613        self.syncWithOrigin = True
 614        self.verbose = False
 615        self.importIntoRemotes = True
 616        self.maxChanges = ""
 617        self.isWindows = (platform.system() == "Windows")
 618        self.keepRepoPath = False
 619        self.depotPaths = None
 620
 621        if gitConfig("git-p4.syncFromOrigin") == "false":
 622            self.syncWithOrigin = False
 623
 624    def extractFilesFromCommit(self, commit):
 625        files = []
 626        fnum = 0
 627        while commit.has_key("depotFile%s" % fnum):
 628            path =  commit["depotFile%s" % fnum]
 629
 630            found = [p for p in self.depotPaths
 631                     if path.startswith (p)]
 632            if not found:
 633                fnum = fnum + 1
 634                continue
 635
 636            file = {}
 637            file["path"] = path
 638            file["rev"] = commit["rev%s" % fnum]
 639            file["action"] = commit["action%s" % fnum]
 640            file["type"] = commit["type%s" % fnum]
 641            files.append(file)
 642            fnum = fnum + 1
 643        return files
 644
 645    def stripRepoPath(self, path, prefixes):
 646        if self.keepRepoPath:
 647            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 648
 649        for p in prefixes:
 650            if path.startswith(p):
 651                path = path[len(p):]
 652
 653        return path
 654
 655    def splitFilesIntoBranches(self, commit):
 656        branches = {}
 657        fnum = 0
 658        while commit.has_key("depotFile%s" % fnum):
 659            path =  commit["depotFile%s" % fnum]
 660            found = [p for p in self.depotPaths
 661                     if path.startswith (p)]
 662            if not found:
 663                fnum = fnum + 1
 664                continue
 665
 666            file = {}
 667            file["path"] = path
 668            file["rev"] = commit["rev%s" % fnum]
 669            file["action"] = commit["action%s" % fnum]
 670            file["type"] = commit["type%s" % fnum]
 671            fnum = fnum + 1
 672
 673            relPath = self.stripRepoPath(path, self.depotPaths)
 674
 675            for branch in self.knownBranches.keys():
 676
 677                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 678                if relPath.startswith(branch + "/"):
 679                    if branch not in branches:
 680                        branches[branch] = []
 681                    branches[branch].append(file)
 682
 683        return branches
 684
 685    ## Should move this out, doesn't use SELF.
 686    def readP4Files(self, files):
 687        files = [f for f in files
 688                 if f['action'] != 'delete']
 689
 690        if not files:
 691            return
 692
 693        filedata = p4CmdList('print %s' % ' '.join(['"%s#%s"' % (f['path'],
 694                                                                 f['rev'])
 695                                                    for f in files]))
 696
 697        j = 0;
 698        contents = {}
 699        while j < len(filedata):
 700            stat = filedata[j]
 701            j += 1
 702            text = ''
 703            while j < len(filedata) and filedata[j]['code'] in ('text',
 704                                                                'binary'):
 705                text += filedata[j]['data']
 706                j += 1
 707
 708            contents[stat['depotFile']] = text
 709
 710        for f in files:
 711            assert not f.has_key('data')
 712            f['data'] = contents[f['path']]
 713
 714    def commit(self, details, files, branch, branchPrefixes, parent = ""):
 715        epoch = details["time"]
 716        author = details["user"]
 717
 718        if self.verbose:
 719            print "commit into %s" % branch
 720
 721        # start with reading files; if that fails, we should not
 722        # create a commit.
 723        new_files = []
 724        for f in files:
 725            if [p for p in branchPrefixes if f['path'].startswith(p)]:
 726                new_files.append (f)
 727            else:
 728                sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 729        files = new_files
 730        self.readP4Files(files)
 731
 732
 733
 734
 735        self.gitStream.write("commit %s\n" % branch)
 736#        gitStream.write("mark :%s\n" % details["change"])
 737        self.committedChanges.add(int(details["change"]))
 738        committer = ""
 739        if author not in self.users:
 740            self.getUserMapFromPerforceServer()
 741        if author in self.users:
 742            committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 743        else:
 744            committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 745
 746        self.gitStream.write("committer %s\n" % committer)
 747
 748        self.gitStream.write("data <<EOT\n")
 749        self.gitStream.write(details["desc"])
 750        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s: "
 751                             "options = %s]\n"
 752                             % (','.join (branchPrefixes), details["change"],
 753                                details['options']
 754                                ))
 755        self.gitStream.write("EOT\n\n")
 756
 757        if len(parent) > 0:
 758            if self.verbose:
 759                print "parent %s" % parent
 760            self.gitStream.write("from %s\n" % parent)
 761
 762        for file in files:
 763            if file["type"] == "apple":
 764                print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 765                continue
 766
 767            relPath = self.stripRepoPath(file['path'], branchPrefixes)
 768            if file["action"] == "delete":
 769                self.gitStream.write("D %s\n" % relPath)
 770            else:
 771                mode = 644
 772                if file["type"].startswith("x"):
 773                    mode = 755
 774
 775                data = file['data']
 776
 777                if self.isWindows and file["type"].endswith("text"):
 778                    data = data.replace("\r\n", "\n")
 779
 780                self.gitStream.write("M %d inline %s\n" % (mode, relPath))
 781                self.gitStream.write("data %s\n" % len(data))
 782                self.gitStream.write(data)
 783                self.gitStream.write("\n")
 784
 785        self.gitStream.write("\n")
 786
 787        change = int(details["change"])
 788
 789        if self.labels.has_key(change):
 790            label = self.labels[change]
 791            labelDetails = label[0]
 792            labelRevisions = label[1]
 793            if self.verbose:
 794                print "Change %s is labelled %s" % (change, labelDetails)
 795
 796            files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 797                                                    for p in branchPrefixes]))
 798
 799            if len(files) == len(labelRevisions):
 800
 801                cleanedFiles = {}
 802                for info in files:
 803                    if info["action"] == "delete":
 804                        continue
 805                    cleanedFiles[info["depotFile"]] = info["rev"]
 806
 807                if cleanedFiles == labelRevisions:
 808                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 809                    self.gitStream.write("from %s\n" % branch)
 810
 811                    owner = labelDetails["Owner"]
 812                    tagger = ""
 813                    if author in self.users:
 814                        tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 815                    else:
 816                        tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 817                    self.gitStream.write("tagger %s\n" % tagger)
 818                    self.gitStream.write("data <<EOT\n")
 819                    self.gitStream.write(labelDetails["Description"])
 820                    self.gitStream.write("EOT\n\n")
 821
 822                else:
 823                    if not self.silent:
 824                        print ("Tag %s does not match with change %s: files do not match."
 825                               % (labelDetails["label"], change))
 826
 827            else:
 828                if not self.silent:
 829                    print ("Tag %s does not match with change %s: file count is different."
 830                           % (labelDetails["label"], change))
 831
 832    def getUserCacheFilename(self):
 833        return os.environ["HOME"] + "/.gitp4-usercache.txt"
 834
 835    def getUserMapFromPerforceServer(self):
 836        if self.userMapFromPerforceServer:
 837            return
 838        self.users = {}
 839
 840        for output in p4CmdList("users"):
 841            if not output.has_key("User"):
 842                continue
 843            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 844
 845
 846        s = ''
 847        for (key, val) in self.users.items():
 848            s += "%s\t%s\n" % (key, val)
 849
 850        open(self.getUserCacheFilename(), "wb").write(s)
 851        self.userMapFromPerforceServer = True
 852
 853    def loadUserMapFromCache(self):
 854        self.users = {}
 855        self.userMapFromPerforceServer = False
 856        try:
 857            cache = open(self.getUserCacheFilename(), "rb")
 858            lines = cache.readlines()
 859            cache.close()
 860            for line in lines:
 861                entry = line.strip().split("\t")
 862                self.users[entry[0]] = entry[1]
 863        except IOError:
 864            self.getUserMapFromPerforceServer()
 865
 866    def getLabels(self):
 867        self.labels = {}
 868
 869        l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 870        if len(l) > 0 and not self.silent:
 871            print "Finding files belonging to labels in %s" % `self.depotPath`
 872
 873        for output in l:
 874            label = output["label"]
 875            revisions = {}
 876            newestChange = 0
 877            if self.verbose:
 878                print "Querying files for label %s" % label
 879            for file in p4CmdList("files "
 880                                  +  ' '.join (["%s...@%s" % (p, label)
 881                                                for p in self.depotPaths])):
 882                revisions[file["depotFile"]] = file["rev"]
 883                change = int(file["change"])
 884                if change > newestChange:
 885                    newestChange = change
 886
 887            self.labels[newestChange] = [output, revisions]
 888
 889        if self.verbose:
 890            print "Label changes: %s" % self.labels.keys()
 891
 892    def guessProjectName(self):
 893        for p in self.depotPaths:
 894            return p [p.strip().rfind("/") + 1:]
 895
 896    def getBranchMapping(self):
 897
 898        ## FIXME - what's a P4 projectName ?
 899        self.projectName = self.guessProjectName()
 900
 901        for info in p4CmdList("branches"):
 902            details = p4Cmd("branch -o %s" % info["branch"])
 903            viewIdx = 0
 904            while details.has_key("View%s" % viewIdx):
 905                paths = details["View%s" % viewIdx].split(" ")
 906                viewIdx = viewIdx + 1
 907                # require standard //depot/foo/... //depot/bar/... mapping
 908                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 909                    continue
 910                source = paths[0]
 911                destination = paths[1]
 912                if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 913                    source = source[len(self.depotPath):-4]
 914                    destination = destination[len(self.depotPath):-4]
 915                    if destination not in self.knownBranches:
 916                        self.knownBranches[destination] = source
 917                    if source not in self.knownBranches:
 918                        self.knownBranches[source] = source
 919
 920    def listExistingP4GitBranches(self):
 921        self.p4BranchesInGit = []
 922
 923        cmdline = "git rev-parse --symbolic "
 924        if self.importIntoRemotes:
 925            cmdline += " --remotes"
 926        else:
 927            cmdline += " --branches"
 928
 929        for line in read_pipe_lines(cmdline):
 930            line = line.strip()
 931
 932            ## only import to p4/
 933            if not line.startswith('p4/'):
 934                continue
 935            branch = line
 936            if self.importIntoRemotes:
 937                # strip off p4
 938                branch = re.sub ("^p4/", "", line)
 939
 940            self.p4BranchesInGit.append(branch)
 941            self.initialParents[self.refPrefix + branch] = parseRevision(line)
 942
 943    def createOrUpdateBranchesFromOrigin(self):
 944        if not self.silent:
 945            print ("Creating/updating branch(es) in %s based on origin branch(es)"
 946                   % self.refPrefix)
 947
 948        for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 949            line = line.strip()
 950            if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 951                continue
 952
 953            headName = line[len("origin/"):]
 954            remoteHead = self.refPrefix + headName
 955            originHead = "origin/" + headName
 956
 957            original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 958            if (not original.has_key('depot-paths')
 959                or not original.has_key('change')):
 960                continue
 961
 962            update = False
 963            if not gitBranchExists(remoteHead):
 964                if self.verbose:
 965                    print "creating %s" % remoteHead
 966                update = True
 967            else:
 968                settings =  extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 969                if settings.has_key('change') > 0:
 970                    if settings['depot-paths'] == original['depot-paths']:
 971                        originP4Change = int(original['change'])
 972                        p4Change = int(settings['change'])
 973                        if originP4Change > p4Change:
 974                            print ("%s (%s) is newer than %s (%s). "
 975                                   "Updating p4 branch from origin."
 976                                   % (originHead, originP4Change,
 977                                      remoteHead, p4Change))
 978                            update = True
 979                    else:
 980                        print ("Ignoring: %s was imported from %s while "
 981                               "%s was imported from %s"
 982                               % (originHead, ','.join(original['depot-paths']),
 983                                  remoteHead, ','.join(settings['depot-paths'])))
 984
 985            if update:
 986                system("git update-ref %s %s" % (remoteHead, originHead))
 987
 988    def updateOptionDict(self, d):
 989        option_keys = {}
 990        if self.keepRepoPath:
 991            option_keys['keepRepoPath'] = 1
 992
 993        d["options"] = ' '.join(sorted(option_keys.keys()))
 994
 995    def readOptions(self, d):
 996        self.keepRepoPath = (d.has_key('options')
 997                             and ('keepRepoPath' in d['options']))
 998
 999    def run(self, args):
1000        self.depotPaths = []
1001        self.changeRange = ""
1002        self.initialParent = ""
1003        self.previousDepotPaths = []
1004
1005        # map from branch depot path to parent branch
1006        self.knownBranches = {}
1007        self.initialParents = {}
1008        self.hasOrigin = gitBranchExists("origin")
1009
1010        if self.importIntoRemotes:
1011            self.refPrefix = "refs/remotes/p4/"
1012        else:
1013            self.refPrefix = "refs/heads/"
1014
1015        if self.syncWithOrigin and self.hasOrigin:
1016            if not self.silent:
1017                print "Syncing with origin first by calling git fetch origin"
1018            system("git fetch origin")
1019
1020        if len(self.branch) == 0:
1021            self.branch = self.refPrefix + "p4/master"
1022            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1023                system("git update-ref %s refs/heads/p4" % self.branch)
1024                system("git branch -D p4");
1025            # create it /after/ importing, when master exists
1026            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1027                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1028
1029        # TODO: should always look at previous commits,
1030        # merge with previous imports, if possible.
1031        if args == []:
1032            if self.hasOrigin:
1033                self.createOrUpdateBranchesFromOrigin()
1034            self.listExistingP4GitBranches()
1035
1036            if len(self.p4BranchesInGit) > 1:
1037                if not self.silent:
1038                    print "Importing from/into multiple branches"
1039                self.detectBranches = True
1040
1041            if self.verbose:
1042                print "branches: %s" % self.p4BranchesInGit
1043
1044            p4Change = 0
1045            for branch in self.p4BranchesInGit:
1046                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1047
1048                settings = extractSettingsGitLog(logMsg)
1049
1050                self.readOptions(settings)
1051                if (settings.has_key('depot-paths')
1052                    and settings.has_key ('change')):
1053                    change = int(settings['change']) + 1
1054                    p4Change = max(p4Change, change)
1055
1056                    depotPaths = sorted(settings['depot-paths'])
1057                    if self.previousDepotPaths == []:
1058                        self.previousDepotPaths = depotPaths
1059                    else:
1060                        paths = []
1061                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1062                            for i in range(0, max(len(cur), len(prev))):
1063                                if cur[i] <> prev[i]:
1064                                    break
1065
1066                            paths.append (cur[:i])
1067
1068                        self.previousDepotPaths = paths
1069
1070            if p4Change > 0:
1071                self.depotPaths = sorted(self.previousDepotPaths)
1072                self.changeRange = "@%s,#head" % p4Change
1073                self.initialParent = parseRevision(self.branch)
1074                if not self.silent and not self.detectBranches:
1075                    print "Performing incremental import into %s git branch" % self.branch
1076
1077        if not self.branch.startswith("refs/"):
1078            self.branch = "refs/heads/" + self.branch
1079
1080        if len(args) == 0 and self.depotPaths:
1081            if not self.silent:
1082                print "Depot paths: %s" % ' '.join(self.depotPaths)
1083        else:
1084            if self.depotPaths and self.depotPaths != args:
1085                print ("previous import used depot path %s and now %s was specified. "
1086                       "This doesn't work!" % (' '.join (self.depotPaths),
1087                                               ' '.join (args)))
1088                sys.exit(1)
1089
1090            self.depotPaths = sorted(args)
1091
1092        self.revision = ""
1093        self.users = {}
1094
1095        newPaths = []
1096        for p in self.depotPaths:
1097            if p.find("@") != -1:
1098                atIdx = p.index("@")
1099                self.changeRange = p[atIdx:]
1100                if self.changeRange == "@all":
1101                    self.changeRange = ""
1102                elif ',' not in self.changeRange:
1103                    self.revision = self.changeRange
1104                    self.changeRange = ""
1105                p = p[0:atIdx]
1106            elif p.find("#") != -1:
1107                hashIdx = p.index("#")
1108                self.revision = p[hashIdx:]
1109                p = p[0:hashIdx]
1110            elif self.previousDepotPaths == []:
1111                self.revision = "#head"
1112
1113            p = re.sub ("\.\.\.$", "", p)
1114            if not p.endswith("/"):
1115                p += "/"
1116
1117            newPaths.append(p)
1118
1119        self.depotPaths = newPaths
1120
1121
1122        self.loadUserMapFromCache()
1123        self.labels = {}
1124        if self.detectLabels:
1125            self.getLabels();
1126
1127        if self.detectBranches:
1128            self.getBranchMapping();
1129            if self.verbose:
1130                print "p4-git branches: %s" % self.p4BranchesInGit
1131                print "initial parents: %s" % self.initialParents
1132            for b in self.p4BranchesInGit:
1133                if b != "master":
1134
1135                    ## FIXME
1136                    b = b[len(self.projectName):]
1137                self.createdBranches.add(b)
1138
1139        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1140
1141        importProcess = subprocess.Popen(["git", "fast-import"],
1142                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1143                                         stderr=subprocess.PIPE);
1144        self.gitOutput = importProcess.stdout
1145        self.gitStream = importProcess.stdin
1146        self.gitError = importProcess.stderr
1147
1148        if self.revision:
1149            print "Doing initial import of %s from revision %s" % (' '.join(self.depotPaths), self.revision)
1150
1151            details = { "user" : "git perforce import user", "time" : int(time.time()) }
1152            details["desc"] = ("Initial import of %s from the state at revision %s"
1153                               % (' '.join(self.depotPaths), self.revision))
1154            details["change"] = self.revision
1155            newestRevision = 0
1156
1157            fileCnt = 0
1158            for info in p4CmdList("files "
1159                                  +  ' '.join(["%s...%s"
1160                                               % (p, self.revision)
1161                                               for p in self.depotPaths])):
1162
1163                if info['code'] == 'error':
1164                    sys.stderr.write("p4 returned an error: %s\n"
1165                                     % info['data'])
1166                    sys.exit(1)
1167
1168
1169                change = int(info["change"])
1170                if change > newestRevision:
1171                    newestRevision = change
1172
1173                if info["action"] == "delete":
1174                    # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1175                    #fileCnt = fileCnt + 1
1176                    continue
1177
1178                for prop in ["depotFile", "rev", "action", "type" ]:
1179                    details["%s%s" % (prop, fileCnt)] = info[prop]
1180
1181                fileCnt = fileCnt + 1
1182
1183            details["change"] = newestRevision
1184            self.updateOptionDict(details)
1185            try:
1186                self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1187            except IOError:
1188                print "IO error with git fast-import. Is your git version recent enough?"
1189                print self.gitError.read()
1190
1191        else:
1192            changes = []
1193
1194            if len(self.changesFile) > 0:
1195                output = open(self.changesFile).readlines()
1196                changeSet = Set()
1197                for line in output:
1198                    changeSet.add(int(line))
1199
1200                for change in changeSet:
1201                    changes.append(change)
1202
1203                changes.sort()
1204            else:
1205                if self.verbose:
1206                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1207                                                              self.changeRange)
1208                assert self.depotPaths
1209                output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1210                                                                    for p in self.depotPaths]))
1211
1212                for line in output:
1213                    changeNum = line.split(" ")[1]
1214                    changes.append(changeNum)
1215
1216                changes.reverse()
1217
1218                if len(self.maxChanges) > 0:
1219                    changes = changes[0:min(int(self.maxChanges), len(changes))]
1220
1221            if len(changes) == 0:
1222                if not self.silent:
1223                    print "No changes to import!"
1224                return True
1225
1226            self.updatedBranches = set()
1227
1228            cnt = 1
1229            for change in changes:
1230                description = p4Cmd("describe %s" % change)
1231                self.updateOptionDict(description)
1232
1233                if not self.silent:
1234                    sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1235                    sys.stdout.flush()
1236                cnt = cnt + 1
1237
1238                try:
1239                    if self.detectBranches:
1240                        branches = self.splitFilesIntoBranches(description)
1241                        for branch in branches.keys():
1242                            ## HACK  --hwn
1243                            branchPrefix = self.depotPaths[0] + branch + "/"
1244
1245                            parent = ""
1246
1247                            filesForCommit = branches[branch]
1248
1249                            if self.verbose:
1250                                print "branch is %s" % branch
1251
1252                            self.updatedBranches.add(branch)
1253
1254                            if branch not in self.createdBranches:
1255                                self.createdBranches.add(branch)
1256                                parent = self.knownBranches[branch]
1257                                if parent == branch:
1258                                    parent = ""
1259                                elif self.verbose:
1260                                    print "parent determined through known branches: %s" % parent
1261
1262                            # main branch? use master
1263                            if branch == "main":
1264                                branch = "master"
1265                            else:
1266
1267                                ## FIXME
1268                                branch = self.projectName + branch
1269
1270                            if parent == "main":
1271                                parent = "master"
1272                            elif len(parent) > 0:
1273                                ## FIXME
1274                                parent = self.projectName + parent
1275
1276                            branch = self.refPrefix + branch
1277                            if len(parent) > 0:
1278                                parent = self.refPrefix + parent
1279
1280                            if self.verbose:
1281                                print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1282
1283                            if len(parent) == 0 and branch in self.initialParents:
1284                                parent = self.initialParents[branch]
1285                                del self.initialParents[branch]
1286
1287                            self.commit(description, filesForCommit, branch, branchPrefix, parent)
1288                    else:
1289                        files = self.extractFilesFromCommit(description)
1290                        self.commit(description, files, self.branch, self.depotPaths,
1291                                    self.initialParent)
1292                        self.initialParent = ""
1293                except IOError:
1294                    print self.gitError.read()
1295                    sys.exit(1)
1296
1297            if not self.silent:
1298                print ""
1299                if len(self.updatedBranches) > 0:
1300                    sys.stdout.write("Updated branches: ")
1301                    for b in self.updatedBranches:
1302                        sys.stdout.write("%s " % b)
1303                    sys.stdout.write("\n")
1304
1305
1306        self.gitStream.close()
1307        if importProcess.wait() != 0:
1308            die("fast-import failed: %s" % self.gitError.read())
1309        self.gitOutput.close()
1310        self.gitError.close()
1311
1312        return True
1313
1314class P4Rebase(Command):
1315    def __init__(self):
1316        Command.__init__(self)
1317        self.options = [ ]
1318        self.description = ("Fetches the latest revision from perforce and "
1319                            + "rebases the current work (branch) against it")
1320
1321    def run(self, args):
1322        sync = P4Sync()
1323        sync.run([])
1324        print "Rebasing the current branch"
1325        oldHead = read_pipe("git rev-parse HEAD").strip()
1326        system("git rebase p4")
1327        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1328        return True
1329
1330class P4Clone(P4Sync):
1331    def __init__(self):
1332        P4Sync.__init__(self)
1333        self.description = "Creates a new git repository and imports from Perforce into it"
1334        self.usage = "usage: %prog [options] //depot/path[@revRange]"
1335        self.options.append(
1336            optparse.make_option("--destination", dest="cloneDestination",
1337                                 action='store', default=None,
1338                                 help="where to leave result of the clone"))
1339        self.cloneDestination = None
1340        self.needsGit = False
1341
1342    def defaultDestination(self, args):
1343        ## TODO: use common prefix of args?
1344        depotPath = args[0]
1345        depotDir = re.sub("(@[^@]*)$", "", depotPath)
1346        depotDir = re.sub("(#[^#]*)$", "", depotDir)
1347        depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1348        depotDir = re.sub(r"/$", "", depotDir)
1349        return os.path.split(depotDir)[1]
1350
1351    def run(self, args):
1352        if len(args) < 1:
1353            return False
1354
1355        if self.keepRepoPath and not self.cloneDestination:
1356            sys.stderr.write("Must specify destination for --keep-path\n")
1357            sys.exit(1)
1358
1359        depotPaths = args
1360        for p in depotPaths:
1361            if not p.startswith("//"):
1362                return False
1363
1364        if not self.cloneDestination:
1365            self.cloneDestination = self.defaultDestination()
1366
1367        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1368        os.makedirs(self.cloneDestination)
1369        os.chdir(self.cloneDestination)
1370        system("git init")
1371        self.gitdir = os.getcwd() + "/.git"
1372        if not P4Sync.run(self, depotPaths):
1373            return False
1374        if self.branch != "master":
1375            if gitBranchExists("refs/remotes/p4/master"):
1376                system("git branch master refs/remotes/p4/master")
1377                system("git checkout -f")
1378            else:
1379                print "Could not detect main branch. No checkout/master branch created."
1380
1381        return True
1382
1383class HelpFormatter(optparse.IndentedHelpFormatter):
1384    def __init__(self):
1385        optparse.IndentedHelpFormatter.__init__(self)
1386
1387    def format_description(self, description):
1388        if description:
1389            return description + "\n"
1390        else:
1391            return ""
1392
1393def printUsage(commands):
1394    print "usage: %s <command> [options]" % sys.argv[0]
1395    print ""
1396    print "valid commands: %s" % ", ".join(commands)
1397    print ""
1398    print "Try %s <command> --help for command specific help." % sys.argv[0]
1399    print ""
1400
1401commands = {
1402    "debug" : P4Debug,
1403    "submit" : P4Submit,
1404    "sync" : P4Sync,
1405    "rebase" : P4Rebase,
1406    "clone" : P4Clone,
1407    "rollback" : P4RollBack
1408}
1409
1410
1411def main():
1412    if len(sys.argv[1:]) == 0:
1413        printUsage(commands.keys())
1414        sys.exit(2)
1415
1416    cmd = ""
1417    cmdName = sys.argv[1]
1418    try:
1419        klass = commands[cmdName]
1420        cmd = klass()
1421    except KeyError:
1422        print "unknown command %s" % cmdName
1423        print ""
1424        printUsage(commands.keys())
1425        sys.exit(2)
1426
1427    options = cmd.options
1428    cmd.gitdir = os.environ.get("GIT_DIR", None)
1429
1430    args = sys.argv[2:]
1431
1432    if len(options) > 0:
1433        options.append(optparse.make_option("--git-dir", dest="gitdir"))
1434
1435        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1436                                       options,
1437                                       description = cmd.description,
1438                                       formatter = HelpFormatter())
1439
1440        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1441    global verbose
1442    verbose = cmd.verbose
1443    if cmd.needsGit:
1444        if cmd.gitdir == None:
1445            cmd.gitdir = os.path.abspath(".git")
1446            if not isValidGitDir(cmd.gitdir):
1447                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1448                if os.path.exists(cmd.gitdir):
1449                    cdup = read_pipe("git rev-parse --show-cdup").strip()
1450                    if len(cdup) > 0:
1451                        os.chdir(cdup);
1452
1453        if not isValidGitDir(cmd.gitdir):
1454            if isValidGitDir(cmd.gitdir + "/.git"):
1455                cmd.gitdir += "/.git"
1456            else:
1457                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1458
1459        os.environ["GIT_DIR"] = cmd.gitdir
1460
1461    if not cmd.run(args):
1462        parser.print_help()
1463
1464
1465if __name__ == '__main__':
1466    main()