git-p4

   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
  11 import optparse, sys, os, marshal, popen2, subprocess, shelve
  12 import tempfile, getopt, sha, os.path, time, platform
  13 import re
  14
  15 from sets import Set;
  16
  17 verbose = False
  18
  19 def die(msg):
  20     if verbose:
  21         raise Exception(msg)
  22     else:
  23         sys.stderr.write(msg + "\n")
  24         sys.exit(1)
  25
  26 def 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
  37 def 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
  49 def 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
  60 def 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
  66 def 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
  87 def p4Cmd(cmd):
  88     list = p4CmdList(cmd)
  89     result = {}
  90     for entry in list:
  91         result.update(entry)
  92     return result;
  93
  94 def 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
 112 def currentGitBranch():
 113     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 114
 115 def 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
 121 def parseRevision(ref):
 122     return read_pipe("git rev-parse %s" % ref).strip()
 123
 124 def 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
 138 def 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
 162 def gitBranchExists(branch):
 163     proc = subprocess.Popen(["git", "rev-parse", branch],
 164                             stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 165     return proc.wait() == 0;
 166
 167 def gitConfig(key):
 168     return read_pipe("git config %s" % key, ignore_error=True).strip()
 169
 170 class Command:
 171     def __init__(self):
 172         self.usage = "usage: %prog [options]"
 173         self.needsGit = True
 174
 175 class 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
 194 class 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
 255 class 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         self.verbose = False
 280         self.isWindows = (platform.system() == "Windows")
 281
 282         self.logSubstitutions = {}
 283         self.logSubstitutions["<enter description here>"] = "%log%"
 284         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 285
 286     def check(self):
 287         if len(p4CmdList("opened ...")) > 0:
 288             die("You have files opened with perforce! Close them before starting the sync.")
 289
 290     def start(self):
 291         if len(self.config) > 0 and not self.reset:
 292             die("Cannot start sync. Previous sync config found at %s\n"
 293                 "If you want to start submitting again from scratch "
 294                 "maybe you want to call git-p4 submit --reset" % self.configFile)
 295
 296         commits = []
 297         if self.directSubmit:
 298             commits.append("0")
 299         else:
 300             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 301                 commits.append(line.strip())
 302             commits.reverse()
 303
 304         self.config["commits"] = commits
 305
 306     def prepareLogMessage(self, template, message):
 307         result = ""
 308
 309         for line in template.split("\n"):
 310             if line.startswith("#"):
 311                 result += line + "\n"
 312                 continue
 313
 314             substituted = False
 315             for key in self.logSubstitutions.keys():
 316                 if line.find(key) != -1:
 317                     value = self.logSubstitutions[key]
 318                     value = value.replace("%log%", message)
 319                     if value != "@remove@":
 320                         result += line.replace(key, value) + "\n"
 321                     substituted = True
 322                     break
 323
 324             if not substituted:
 325                 result += line + "\n"
 326
 327         return result
 328
 329     def applyCommit(self, id):
 330         if self.directSubmit:
 331             print "Applying local change in working directory/index"
 332             diff = self.diffStatus
 333         else:
 334             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 335             diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 336         filesToAdd = set()
 337         filesToDelete = set()
 338         editedFiles = set()
 339         for line in diff:
 340             modifier = line[0]
 341             path = line[1:].strip()
 342             if modifier == "M":
 343                 system("p4 edit \"%s\"" % path)
 344                 editedFiles.add(path)
 345             elif modifier == "A":
 346                 filesToAdd.add(path)
 347                 if path in filesToDelete:
 348                     filesToDelete.remove(path)
 349             elif modifier == "D":
 350                 filesToDelete.add(path)
 351                 if path in filesToAdd:
 352                     filesToAdd.remove(path)
 353             else:
 354                 die("unknown modifier %s for %s" % (modifier, path))
 355
 356         if self.directSubmit:
 357             diffcmd = "cat \"%s\"" % self.diffFile
 358         else:
 359             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 360         patchcmd = diffcmd + " | git apply "
 361         tryPatchCmd = patchcmd + "--check -"
 362         applyPatchCmd = patchcmd + "--check --apply -"
 363
 364         if os.system(tryPatchCmd) != 0:
 365             print "Unfortunately applying the change failed!"
 366             print "What do you want to do?"
 367             response = "x"
 368             while response != "s" and response != "a" and response != "w":
 369                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 370                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 371             if response == "s":
 372                 print "Skipping! Good luck with the next patches..."
 373                 return
 374             elif response == "a":
 375                 os.system(applyPatchCmd)
 376                 if len(filesToAdd) > 0:
 377                     print "You may also want to call p4 add on the following files:"
 378                     print " ".join(filesToAdd)
 379                 if len(filesToDelete):
 380                     print "The following files should be scheduled for deletion with p4 delete:"
 381                     print " ".join(filesToDelete)
 382                 die("Please resolve and submit the conflict manually and "
 383                     + "continue afterwards with git-p4 submit --continue")
 384             elif response == "w":
 385                 system(diffcmd + " > patch.txt")
 386                 print "Patch saved to patch.txt in %s !" % self.clientPath
 387                 die("Please resolve and submit the conflict manually and "
 388                     "continue afterwards with git-p4 submit --continue")
 389
 390         system(applyPatchCmd)
 391
 392         for f in filesToAdd:
 393             system("p4 add %s" % f)
 394         for f in filesToDelete:
 395             system("p4 revert %s" % f)
 396             system("p4 delete %s" % f)
 397
 398         logMessage = ""
 399         if not self.directSubmit:
 400             logMessage = extractLogMessageFromGitCommit(id)
 401             logMessage = logMessage.replace("\n", "\n\t")
 402             if self.isWindows:
 403                 logMessage = logMessage.replace("\n", "\r\n")
 404             logMessage = logMessage.strip()
 405
 406         template = read_pipe("p4 change -o")
 407
 408         if self.interactive:
 409             submitTemplate = self.prepareLogMessage(template, logMessage)
 410             diff = read_pipe("p4 diff -du ...")
 411
 412             for newFile in filesToAdd:
 413                 diff += "==== new file ====\n"
 414                 diff += "--- /dev/null\n"
 415                 diff += "+++ %s\n" % newFile
 416                 f = open(newFile, "r")
 417                 for line in f.readlines():
 418                     diff += "+" + line
 419                 f.close()
 420
 421             separatorLine = "######## everything below this line is just the diff #######"
 422             if platform.system() == "Windows":
 423                 separatorLine += "\r"
 424             separatorLine += "\n"
 425
 426             response = "e"
 427             if self.trustMeLikeAFool:
 428                 response = "y"
 429
 430             firstIteration = True
 431             while response == "e":
 432                 if not firstIteration:
 433                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 434                 firstIteration = False
 435                 if response == "e":
 436                     [handle, fileName] = tempfile.mkstemp()
 437                     tmpFile = os.fdopen(handle, "w+")
 438                     tmpFile.write(submitTemplate + separatorLine + diff)
 439                     tmpFile.close()
 440                     defaultEditor = "vi"
 441                     if platform.system() == "Windows":
 442                         defaultEditor = "notepad"
 443                     editor = os.environ.get("EDITOR", defaultEditor);
 444                     system(editor + " " + fileName)
 445                     tmpFile = open(fileName, "rb")
 446                     message = tmpFile.read()
 447                     tmpFile.close()
 448                     os.remove(fileName)
 449                     submitTemplate = message[:message.index(separatorLine)]
 450                     if self.isWindows:
 451                         submitTemplate = submitTemplate.replace("\r\n", "\n")
 452
 453             if response == "y" or response == "yes":
 454                if self.dryRun:
 455                    print submitTemplate
 456                    raw_input("Press return to continue...")
 457                else:
 458                    if self.directSubmit:
 459                        print "Submitting to git first"
 460                        os.chdir(self.oldWorkingDirectory)
 461                        write_pipe("git commit -a -F -", submitTemplate)
 462                        os.chdir(self.clientPath)
 463
 464                    write_pipe("p4 submit -i", submitTemplate)
 465             elif response == "s":
 466                 for f in editedFiles:
 467                     system("p4 revert \"%s\"" % f);
 468                 for f in filesToAdd:
 469                     system("p4 revert \"%s\"" % f);
 470                     system("rm %s" %f)
 471                 for f in filesToDelete:
 472                     system("p4 delete \"%s\"" % f);
 473                 return
 474             else:
 475                 print "Not submitting!"
 476                 self.interactive = False
 477         else:
 478             fileName = "submit.txt"
 479             file = open(fileName, "w+")
 480             file.write(self.prepareLogMessage(template, logMessage))
 481             file.close()
 482             print ("Perforce submit template written as %s. "
 483                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 484                    % (fileName, fileName))
 485
 486     def run(self, args):
 487         if len(args) == 0:
 488             self.master = currentGitBranch()
 489             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 490                 die("Detecting current git branch failed!")
 491         elif len(args) == 1:
 492             self.master = args[0]
 493         else:
 494             return False
 495
 496         depotPath = ""
 497         settings = None
 498         if gitBranchExists("p4"):
 499             settings = extractSettingsGitLog(extractLogMessageFromGitCommit("p4"))
 500         if len(depotPath) == 0 and gitBranchExists("origin"):
 501             settings = extractSettingsGitLog(extractLogMessageFromGitCommit("origin"))
 502         depotPath = settings['depot-paths'][0]
 503
 504         if len(depotPath) == 0:
 505             print "Internal error: cannot locate perforce depot path from existing branches"
 506             sys.exit(128)
 507
 508         self.clientPath = p4Where(depotPath)
 509
 510         if len(self.clientPath) == 0:
 511             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 512             sys.exit(128)
 513
 514         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 515         self.oldWorkingDirectory = os.getcwd()
 516
 517         if self.directSubmit:
 518             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 519             if len(self.diffStatus) == 0:
 520                 print "No changes in working directory to submit."
 521                 return True
 522             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 523             self.diffFile = self.gitdir + "/p4-git-diff"
 524             f = open(self.diffFile, "wb")
 525             f.write(patch)
 526             f.close();
 527
 528         os.chdir(self.clientPath)
 529         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 530         if response == "y" or response == "yes":
 531             system("p4 sync ...")
 532
 533         if len(self.origin) == 0:
 534             if gitBranchExists("p4"):
 535                 self.origin = "p4"
 536             else:
 537                 self.origin = "origin"
 538
 539         if self.reset:
 540             self.firstTime = True
 541
 542         if len(self.substFile) > 0:
 543             for line in open(self.substFile, "r").readlines():
 544                 tokens = line.strip().split("=")
 545                 self.logSubstitutions[tokens[0]] = tokens[1]
 546
 547         self.check()
 548         self.configFile = self.gitdir + "/p4-git-sync.cfg"
 549         self.config = shelve.open(self.configFile, writeback=True)
 550
 551         if self.firstTime:
 552             self.start()
 553
 554         commits = self.config.get("commits", [])
 555
 556         while len(commits) > 0:
 557             self.firstTime = False
 558             commit = commits[0]
 559             commits = commits[1:]
 560             self.config["commits"] = commits
 561             self.applyCommit(commit)
 562             if not self.interactive:
 563                 break
 564
 565         self.config.close()
 566
 567         if self.directSubmit:
 568             os.remove(self.diffFile)
 569
 570         if len(commits) == 0:
 571             if self.firstTime:
 572                 print "No changes found to apply between %s and current HEAD" % self.origin
 573             else:
 574                 print "All changes applied!"
 575                 os.chdir(self.oldWorkingDirectory)
 576                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 577                 if response == "y" or response == "yes":
 578                     rebase = P4Rebase()
 579                     rebase.run([])
 580             os.remove(self.configFile)
 581
 582         return True
 583
 584 class P4Sync(Command):
 585     def __init__(self):
 586         Command.__init__(self)
 587         self.options = [
 588                 optparse.make_option("--branch", dest="branch"),
 589                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 590                 optparse.make_option("--changesfile", dest="changesFile"),
 591                 optparse.make_option("--silent", dest="silent", action="store_true"),
 592                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 593                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 594                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 595                                      help="Import into refs/heads/ , not refs/remotes"),
 596                 optparse.make_option("--max-changes", dest="maxChanges"),
 597                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 598                                      help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 599         ]
 600         self.description = """Imports from Perforce into a git repository.\n
 601     example:
 602     //depot/my/project/ -- to import the current head
 603     //depot/my/project/@all -- to import everything
 604     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 605
 606     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 607
 608         self.usage += " //depot/path[@revRange]"
 609         self.silent = False
 610         self.createdBranches = Set()
 611         self.committedChanges = Set()
 612         self.branch = ""
 613         self.detectBranches = False
 614         self.detectLabels = False
 615         self.changesFile = ""
 616         self.syncWithOrigin = True
 617         self.verbose = False
 618         self.importIntoRemotes = True
 619         self.maxChanges = ""
 620         self.isWindows = (platform.system() == "Windows")
 621         self.keepRepoPath = False
 622         self.depotPaths = None
 623
 624         if gitConfig("git-p4.syncFromOrigin") == "false":
 625             self.syncWithOrigin = False
 626
 627     def extractFilesFromCommit(self, commit):
 628         files = []
 629         fnum = 0
 630         while commit.has_key("depotFile%s" % fnum):
 631             path =  commit["depotFile%s" % fnum]
 632
 633             found = [p for p in self.depotPaths
 634                      if path.startswith (p)]
 635             if not found:
 636                 fnum = fnum + 1
 637                 continue
 638
 639             file = {}
 640             file["path"] = path
 641             file["rev"] = commit["rev%s" % fnum]
 642             file["action"] = commit["action%s" % fnum]
 643             file["type"] = commit["type%s" % fnum]
 644             files.append(file)
 645             fnum = fnum + 1
 646         return files
 647
 648     def stripRepoPath(self, path, prefixes):
 649         if self.keepRepoPath:
 650             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 651
 652         for p in prefixes:
 653             if path.startswith(p):
 654                 path = path[len(p):]
 655
 656         return path
 657
 658     def splitFilesIntoBranches(self, commit):
 659         branches = {}
 660         fnum = 0
 661         while commit.has_key("depotFile%s" % fnum):
 662             path =  commit["depotFile%s" % fnum]
 663             found = [p for p in self.depotPaths
 664                      if path.startswith (p)]
 665             if not found:
 666                 fnum = fnum + 1
 667                 continue
 668
 669             file = {}
 670             file["path"] = path
 671             file["rev"] = commit["rev%s" % fnum]
 672             file["action"] = commit["action%s" % fnum]
 673             file["type"] = commit["type%s" % fnum]
 674             fnum = fnum + 1
 675
 676             relPath = self.stripRepoPath(path, self.depotPaths)
 677
 678             for branch in self.knownBranches.keys():
 679
 680                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 681                 if relPath.startswith(branch + "/"):
 682                     if branch not in branches:
 683                         branches[branch] = []
 684                     branches[branch].append(file)
 685
 686         return branches
 687
 688     ## Should move this out, doesn't use SELF.
 689     def readP4Files(self, files):
 690         files = [f for f in files
 691                  if f['action'] != 'delete']
 692
 693         if not files:
 694             return
 695
 696         filedata = p4CmdList('print %s' % ' '.join(['"%s#%s"' % (f['path'],
 697                                                                  f['rev'])
 698                                                     for f in files]))
 699
 700         j = 0;
 701         contents = {}
 702         while j < len(filedata):
 703             stat = filedata[j]
 704             j += 1
 705             text = ''
 706             while j < len(filedata) and filedata[j]['code'] in ('text',
 707                                                                 'binary'):
 708                 text += filedata[j]['data']
 709                 j += 1
 710
 711             contents[stat['depotFile']] = text
 712
 713         for f in files:
 714             assert not f.has_key('data')
 715             f['data'] = contents[f['path']]
 716
 717     def commit(self, details, files, branch, branchPrefixes, parent = ""):
 718         epoch = details["time"]
 719         author = details["user"]
 720
 721         if self.verbose:
 722             print "commit into %s" % branch
 723
 724         # start with reading files; if that fails, we should not
 725         # create a commit.
 726         new_files = []
 727         for f in files:
 728             if [p for p in branchPrefixes if f['path'].startswith(p)]:
 729                 new_files.append (f)
 730             else:
 731                 sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 732         files = new_files
 733         self.readP4Files(files)
 734
 735
 736
 737
 738         self.gitStream.write("commit %s\n" % branch)
 739 #        gitStream.write("mark :%s\n" % details["change"])
 740         self.committedChanges.add(int(details["change"]))
 741         committer = ""
 742         if author not in self.users:
 743             self.getUserMapFromPerforceServer()
 744         if author in self.users:
 745             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 746         else:
 747             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 748
 749         self.gitStream.write("committer %s\n" % committer)
 750
 751         self.gitStream.write("data <<EOT\n")
 752         self.gitStream.write(details["desc"])
 753         self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s: "
 754                              "options = %s]\n"
 755                              % (','.join (branchPrefixes), details["change"],
 756                                 details['options']
 757                                 ))
 758         self.gitStream.write("EOT\n\n")
 759
 760         if len(parent) > 0:
 761             if self.verbose:
 762                 print "parent %s" % parent
 763             self.gitStream.write("from %s\n" % parent)
 764
 765         for file in files:
 766             if file["type"] == "apple":
 767                 print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 768                 continue
 769
 770             relPath = self.stripRepoPath(file['path'], branchPrefixes)
 771             if file["action"] == "delete":
 772                 self.gitStream.write("D %s\n" % relPath)
 773             else:
 774                 mode = 644
 775                 if file["type"].startswith("x"):
 776                     mode = 755
 777
 778                 data = file['data']
 779
 780                 if self.isWindows and file["type"].endswith("text"):
 781                     data = data.replace("\r\n", "\n")
 782
 783                 self.gitStream.write("M %d inline %s\n" % (mode, relPath))
 784                 self.gitStream.write("data %s\n" % len(data))
 785                 self.gitStream.write(data)
 786                 self.gitStream.write("\n")
 787
 788         self.gitStream.write("\n")
 789
 790         change = int(details["change"])
 791
 792         if self.labels.has_key(change):
 793             label = self.labels[change]
 794             labelDetails = label[0]
 795             labelRevisions = label[1]
 796             if self.verbose:
 797                 print "Change %s is labelled %s" % (change, labelDetails)
 798
 799             files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 800                                                     for p in branchPrefixes]))
 801
 802             if len(files) == len(labelRevisions):
 803
 804                 cleanedFiles = {}
 805                 for info in files:
 806                     if info["action"] == "delete":
 807                         continue
 808                     cleanedFiles[info["depotFile"]] = info["rev"]
 809
 810                 if cleanedFiles == labelRevisions:
 811                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 812                     self.gitStream.write("from %s\n" % branch)
 813
 814                     owner = labelDetails["Owner"]
 815                     tagger = ""
 816                     if author in self.users:
 817                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 818                     else:
 819                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 820                     self.gitStream.write("tagger %s\n" % tagger)
 821                     self.gitStream.write("data <<EOT\n")
 822                     self.gitStream.write(labelDetails["Description"])
 823                     self.gitStream.write("EOT\n\n")
 824
 825                 else:
 826                     if not self.silent:
 827                         print ("Tag %s does not match with change %s: files do not match."
 828                                % (labelDetails["label"], change))
 829
 830             else:
 831                 if not self.silent:
 832                     print ("Tag %s does not match with change %s: file count is different."
 833                            % (labelDetails["label"], change))
 834
 835     def getUserCacheFilename(self):
 836         return os.environ["HOME"] + "/.gitp4-usercache.txt"
 837
 838     def getUserMapFromPerforceServer(self):
 839         if self.userMapFromPerforceServer:
 840             return
 841         self.users = {}
 842
 843         for output in p4CmdList("users"):
 844             if not output.has_key("User"):
 845                 continue
 846             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 847
 848
 849         s = ''
 850         for (key, val) in self.users.items():
 851             s += "%s\t%s\n" % (key, val)
 852
 853         open(self.getUserCacheFilename(), "wb").write(s)
 854         self.userMapFromPerforceServer = True
 855
 856     def loadUserMapFromCache(self):
 857         self.users = {}
 858         self.userMapFromPerforceServer = False
 859         try:
 860             cache = open(self.getUserCacheFilename(), "rb")
 861             lines = cache.readlines()
 862             cache.close()
 863             for line in lines:
 864                 entry = line.strip().split("\t")
 865                 self.users[entry[0]] = entry[1]
 866         except IOError:
 867             self.getUserMapFromPerforceServer()
 868
 869     def getLabels(self):
 870         self.labels = {}
 871
 872         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
 873         if len(l) > 0 and not self.silent:
 874             print "Finding files belonging to labels in %s" % `self.depotPath`
 875
 876         for output in l:
 877             label = output["label"]
 878             revisions = {}
 879             newestChange = 0
 880             if self.verbose:
 881                 print "Querying files for label %s" % label
 882             for file in p4CmdList("files "
 883                                   +  ' '.join (["%s...@%s" % (p, label)
 884                                                 for p in self.depotPaths])):
 885                 revisions[file["depotFile"]] = file["rev"]
 886                 change = int(file["change"])
 887                 if change > newestChange:
 888                     newestChange = change
 889
 890             self.labels[newestChange] = [output, revisions]
 891
 892         if self.verbose:
 893             print "Label changes: %s" % self.labels.keys()
 894
 895     def guessProjectName(self):
 896         for p in self.depotPaths:
 897             return p [p.strip().rfind("/") + 1:]
 898
 899     def getBranchMapping(self):
 900
 901         ## FIXME - what's a P4 projectName ?
 902         self.projectName = self.guessProjectName()
 903
 904         for info in p4CmdList("branches"):
 905             details = p4Cmd("branch -o %s" % info["branch"])
 906             viewIdx = 0
 907             while details.has_key("View%s" % viewIdx):
 908                 paths = details["View%s" % viewIdx].split(" ")
 909                 viewIdx = viewIdx + 1
 910                 # require standard //depot/foo/... //depot/bar/... mapping
 911                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 912                     continue
 913                 source = paths[0]
 914                 destination = paths[1]
 915                 ## HACK
 916                 if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
 917                     source = source[len(self.depotPaths[0]):-4]
 918                     destination = destination[len(self.depotPaths[0]):-4]
 919                     if destination not in self.knownBranches:
 920                         self.knownBranches[destination] = source
 921                     if source not in self.knownBranches:
 922                         self.knownBranches[source] = source
 923
 924     def listExistingP4GitBranches(self):
 925         self.p4BranchesInGit = []
 926
 927         cmdline = "git rev-parse --symbolic "
 928         if self.importIntoRemotes:
 929             cmdline += " --remotes"
 930         else:
 931             cmdline += " --branches"
 932
 933         for line in read_pipe_lines(cmdline):
 934             line = line.strip()
 935
 936             ## only import to p4/
 937             if not line.startswith('p4/'):
 938                 continue
 939             branch = line
 940             if self.importIntoRemotes:
 941                 # strip off p4
 942                 branch = re.sub ("^p4/", "", line)
 943
 944             self.p4BranchesInGit.append(branch)
 945             self.initialParents[self.refPrefix + branch] = parseRevision(line)
 946
 947     def createOrUpdateBranchesFromOrigin(self):
 948         if not self.silent:
 949             print ("Creating/updating branch(es) in %s based on origin branch(es)"
 950                    % self.refPrefix)
 951
 952         for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 953             line = line.strip()
 954             if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 955                 continue
 956
 957             headName = line[len("origin/"):]
 958             remoteHead = self.refPrefix + headName
 959             originHead = "origin/" + headName
 960
 961             original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 962             if (not original.has_key('depot-paths')
 963                 or not original.has_key('change')):
 964                 continue
 965
 966             update = False
 967             if not gitBranchExists(remoteHead):
 968                 if self.verbose:
 969                     print "creating %s" % remoteHead
 970                 update = True
 971             else:
 972                 settings =  extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 973                 if settings.has_key('change') > 0:
 974                     if settings['depot-paths'] == original['depot-paths']:
 975                         originP4Change = int(original['change'])
 976                         p4Change = int(settings['change'])
 977                         if originP4Change > p4Change:
 978                             print ("%s (%s) is newer than %s (%s). "
 979                                    "Updating p4 branch from origin."
 980                                    % (originHead, originP4Change,
 981                                       remoteHead, p4Change))
 982                             update = True
 983                     else:
 984                         print ("Ignoring: %s was imported from %s while "
 985                                "%s was imported from %s"
 986                                % (originHead, ','.join(original['depot-paths']),
 987                                   remoteHead, ','.join(settings['depot-paths'])))
 988
 989             if update:
 990                 system("git update-ref %s %s" % (remoteHead, originHead))
 991
 992     def updateOptionDict(self, d):
 993         option_keys = {}
 994         if self.keepRepoPath:
 995             option_keys['keepRepoPath'] = 1
 996
 997         d["options"] = ' '.join(sorted(option_keys.keys()))
 998
 999     def readOptions(self, d):
1000         self.keepRepoPath = (d.has_key('options')
1001                              and ('keepRepoPath' in d['options']))
1002
1003     def run(self, args):
1004         self.depotPaths = []
1005         self.changeRange = ""
1006         self.initialParent = ""
1007         self.previousDepotPaths = []
1008
1009         # map from branch depot path to parent branch
1010         self.knownBranches = {}
1011         self.initialParents = {}
1012         self.hasOrigin = gitBranchExists("origin")
1013
1014         if self.importIntoRemotes:
1015             self.refPrefix = "refs/remotes/p4/"
1016         else:
1017             self.refPrefix = "refs/heads/"
1018
1019         if self.syncWithOrigin and self.hasOrigin:
1020             if not self.silent:
1021                 print "Syncing with origin first by calling git fetch origin"
1022             system("git fetch origin")
1023
1024         if len(self.branch) == 0:
1025             self.branch = self.refPrefix + "p4/master"
1026             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1027                 system("git update-ref %s refs/heads/p4" % self.branch)
1028                 system("git branch -D p4");
1029             # create it /after/ importing, when master exists
1030             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1031                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1032
1033         # TODO: should always look at previous commits,
1034         # merge with previous imports, if possible.
1035         if args == []:
1036             if self.hasOrigin:
1037                 self.createOrUpdateBranchesFromOrigin()
1038             self.listExistingP4GitBranches()
1039
1040             if len(self.p4BranchesInGit) > 1:
1041                 if not self.silent:
1042                     print "Importing from/into multiple branches"
1043                 self.detectBranches = True
1044
1045             if self.verbose:
1046                 print "branches: %s" % self.p4BranchesInGit
1047
1048             p4Change = 0
1049             for branch in self.p4BranchesInGit:
1050                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1051
1052                 settings = extractSettingsGitLog(logMsg)
1053
1054                 self.readOptions(settings)
1055                 if (settings.has_key('depot-paths')
1056                     and settings.has_key ('change')):
1057                     change = int(settings['change']) + 1
1058                     p4Change = max(p4Change, change)
1059
1060                     depotPaths = sorted(settings['depot-paths'])
1061                     if self.previousDepotPaths == []:
1062                         self.previousDepotPaths = depotPaths
1063                     else:
1064                         paths = []
1065                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1066                             for i in range(0, min(len(cur), len(prev))):
1067                                 if cur[i] <> prev[i]:
1068                                     i = i - 1
1069                                     break
1070
1071                             paths.append (cur[:i + 1])
1072
1073                         self.previousDepotPaths = paths
1074
1075             if p4Change > 0:
1076                 self.depotPaths = sorted(self.previousDepotPaths)
1077                 self.changeRange = "@%s,#head" % p4Change
1078                 if not self.detectBranches:
1079                     self.initialParent = parseRevision(self.branch)
1080                 if not self.silent and not self.detectBranches:
1081                     print "Performing incremental import into %s git branch" % self.branch
1082
1083         if not self.branch.startswith("refs/"):
1084             self.branch = "refs/heads/" + self.branch
1085
1086         if len(args) == 0 and self.depotPaths:
1087             if not self.silent:
1088                 print "Depot paths: %s" % ' '.join(self.depotPaths)
1089         else:
1090             if self.depotPaths and self.depotPaths != args:
1091                 print ("previous import used depot path %s and now %s was specified. "
1092                        "This doesn't work!" % (' '.join (self.depotPaths),
1093                                                ' '.join (args)))
1094                 sys.exit(1)
1095
1096             self.depotPaths = sorted(args)
1097
1098         self.revision = ""
1099         self.users = {}
1100
1101         newPaths = []
1102         for p in self.depotPaths:
1103             if p.find("@") != -1:
1104                 atIdx = p.index("@")
1105                 self.changeRange = p[atIdx:]
1106                 if self.changeRange == "@all":
1107                     self.changeRange = ""
1108                 elif ',' not in self.changeRange:
1109                     self.revision = self.changeRange
1110                     self.changeRange = ""
1111                 p = p[0:atIdx]
1112             elif p.find("#") != -1:
1113                 hashIdx = p.index("#")
1114                 self.revision = p[hashIdx:]
1115                 p = p[0:hashIdx]
1116             elif self.previousDepotPaths == []:
1117                 self.revision = "#head"
1118
1119             p = re.sub ("\.\.\.$", "", p)
1120             if not p.endswith("/"):
1121                 p += "/"
1122
1123             newPaths.append(p)
1124
1125         self.depotPaths = newPaths
1126
1127
1128         self.loadUserMapFromCache()
1129         self.labels = {}
1130         if self.detectLabels:
1131             self.getLabels();
1132
1133         if self.detectBranches:
1134             self.getBranchMapping();
1135             if self.verbose:
1136                 print "p4-git branches: %s" % self.p4BranchesInGit
1137                 print "initial parents: %s" % self.initialParents
1138             for b in self.p4BranchesInGit:
1139                 if b != "master":
1140
1141                     ## FIXME
1142                     b = b[len(self.projectName):]
1143                 self.createdBranches.add(b)
1144
1145         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1146
1147         importProcess = subprocess.Popen(["git", "fast-import"],
1148                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1149                                          stderr=subprocess.PIPE);
1150         self.gitOutput = importProcess.stdout
1151         self.gitStream = importProcess.stdin
1152         self.gitError = importProcess.stderr
1153
1154         if self.revision:
1155             print "Doing initial import of %s from revision %s" % (' '.join(self.depotPaths), self.revision)
1156
1157             details = { "user" : "git perforce import user", "time" : int(time.time()) }
1158             details["desc"] = ("Initial import of %s from the state at revision %s"
1159                                % (' '.join(self.depotPaths), self.revision))
1160             details["change"] = self.revision
1161             newestRevision = 0
1162
1163             fileCnt = 0
1164             for info in p4CmdList("files "
1165                                   +  ' '.join(["%s...%s"
1166                                                % (p, self.revision)
1167                                                for p in self.depotPaths])):
1168
1169                 if info['code'] == 'error':
1170                     sys.stderr.write("p4 returned an error: %s\n"
1171                                      % info['data'])
1172                     sys.exit(1)
1173
1174
1175                 change = int(info["change"])
1176                 if change > newestRevision:
1177                     newestRevision = change
1178
1179                 if info["action"] == "delete":
1180                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1181                     #fileCnt = fileCnt + 1
1182                     continue
1183
1184                 for prop in ["depotFile", "rev", "action", "type" ]:
1185                     details["%s%s" % (prop, fileCnt)] = info[prop]
1186
1187                 fileCnt = fileCnt + 1
1188
1189             details["change"] = newestRevision
1190             self.updateOptionDict(details)
1191             try:
1192                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1193             except IOError:
1194                 print "IO error with git fast-import. Is your git version recent enough?"
1195                 print self.gitError.read()
1196
1197         else:
1198             changes = []
1199
1200             if len(self.changesFile) > 0:
1201                 output = open(self.changesFile).readlines()
1202                 changeSet = Set()
1203                 for line in output:
1204                     changeSet.add(int(line))
1205
1206                 for change in changeSet:
1207                     changes.append(change)
1208
1209                 changes.sort()
1210             else:
1211                 if self.verbose:
1212                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1213                                                               self.changeRange)
1214                 assert self.depotPaths
1215                 output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1216                                                                     for p in self.depotPaths]))
1217
1218                 for line in output:
1219                     changeNum = line.split(" ")[1]
1220                     changes.append(changeNum)
1221
1222                 changes.reverse()
1223
1224                 if len(self.maxChanges) > 0:
1225                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1226
1227             if len(changes) == 0:
1228                 if not self.silent:
1229                     print "No changes to import!"
1230                 return True
1231
1232             self.updatedBranches = set()
1233
1234             cnt = 1
1235             for change in changes:
1236                 description = p4Cmd("describe %s" % change)
1237                 self.updateOptionDict(description)
1238
1239                 if not self.silent:
1240                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1241                     sys.stdout.flush()
1242                 cnt = cnt + 1
1243
1244                 try:
1245                     if self.detectBranches:
1246                         branches = self.splitFilesIntoBranches(description)
1247                         for branch in branches.keys():
1248                             ## HACK  --hwn
1249                             branchPrefix = self.depotPaths[0] + branch + "/"
1250
1251                             parent = ""
1252
1253                             filesForCommit = branches[branch]
1254
1255                             if self.verbose:
1256                                 print "branch is %s" % branch
1257
1258                             self.updatedBranches.add(branch)
1259
1260                             if branch not in self.createdBranches:
1261                                 self.createdBranches.add(branch)
1262                                 parent = self.knownBranches[branch]
1263                                 if parent == branch:
1264                                     parent = ""
1265                                 elif self.verbose:
1266                                     print "parent determined through known branches: %s" % parent
1267
1268                             # main branch? use master
1269                             if branch == "main":
1270                                 branch = "master"
1271                             else:
1272
1273                                 ## FIXME
1274                                 branch = self.projectName + branch
1275
1276                             if parent == "main":
1277                                 parent = "master"
1278                             elif len(parent) > 0:
1279                                 ## FIXME
1280                                 parent = self.projectName + parent
1281
1282                             branch = self.refPrefix + branch
1283                             if len(parent) > 0:
1284                                 parent = self.refPrefix + parent
1285
1286                             if self.verbose:
1287                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1288
1289                             if len(parent) == 0 and branch in self.initialParents:
1290                                 parent = self.initialParents[branch]
1291                                 del self.initialParents[branch]
1292
1293                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
1294                     else:
1295                         files = self.extractFilesFromCommit(description)
1296                         self.commit(description, files, self.branch, self.depotPaths,
1297                                     self.initialParent)
1298                         self.initialParent = ""
1299                 except IOError:
1300                     print self.gitError.read()
1301                     sys.exit(1)
1302
1303             if not self.silent:
1304                 print ""
1305                 if len(self.updatedBranches) > 0:
1306                     sys.stdout.write("Updated branches: ")
1307                     for b in self.updatedBranches:
1308                         sys.stdout.write("%s " % b)
1309                     sys.stdout.write("\n")
1310
1311
1312         self.gitStream.close()
1313         if importProcess.wait() != 0:
1314             die("fast-import failed: %s" % self.gitError.read())
1315         self.gitOutput.close()
1316         self.gitError.close()
1317
1318         return True
1319
1320 class P4Rebase(Command):
1321     def __init__(self):
1322         Command.__init__(self)
1323         self.options = [ ]
1324         self.description = ("Fetches the latest revision from perforce and "
1325                             + "rebases the current work (branch) against it")
1326         self.verbose = False
1327
1328     def run(self, args):
1329         sync = P4Sync()
1330         sync.run([])
1331         print "Rebasing the current branch"
1332         oldHead = read_pipe("git rev-parse HEAD").strip()
1333         system("git rebase p4")
1334         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1335         return True
1336
1337 class P4Clone(P4Sync):
1338     def __init__(self):
1339         P4Sync.__init__(self)
1340         self.description = "Creates a new git repository and imports from Perforce into it"
1341         self.usage = "usage: %prog [options] //depot/path[@revRange]"
1342         self.options.append(
1343             optparse.make_option("--destination", dest="cloneDestination",
1344                                  action='store', default=None,
1345                                  help="where to leave result of the clone"))
1346         self.cloneDestination = None
1347         self.needsGit = False
1348
1349     def defaultDestination(self, args):
1350         ## TODO: use common prefix of args?
1351         depotPath = args[0]
1352         depotDir = re.sub("(@[^@]*)$", "", depotPath)
1353         depotDir = re.sub("(#[^#]*)$", "", depotDir)
1354         depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1355         depotDir = re.sub(r"/$", "", depotDir)
1356         return os.path.split(depotDir)[1]
1357
1358     def run(self, args):
1359         if len(args) < 1:
1360             return False
1361
1362         if self.keepRepoPath and not self.cloneDestination:
1363             sys.stderr.write("Must specify destination for --keep-path\n")
1364             sys.exit(1)
1365
1366         depotPaths = args
1367         for p in depotPaths:
1368             if not p.startswith("//"):
1369                 return False
1370
1371         if not self.cloneDestination:
1372             self.cloneDestination = self.defaultDestination(args)
1373
1374         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1375         os.makedirs(self.cloneDestination)
1376         os.chdir(self.cloneDestination)
1377         system("git init")
1378         self.gitdir = os.getcwd() + "/.git"
1379         if not P4Sync.run(self, depotPaths):
1380             return False
1381         if self.branch != "master":
1382             if gitBranchExists("refs/remotes/p4/master"):
1383                 system("git branch master refs/remotes/p4/master")
1384                 system("git checkout -f")
1385             else:
1386                 print "Could not detect main branch. No checkout/master branch created."
1387
1388         return True
1389
1390 class HelpFormatter(optparse.IndentedHelpFormatter):
1391     def __init__(self):
1392         optparse.IndentedHelpFormatter.__init__(self)
1393
1394     def format_description(self, description):
1395         if description:
1396             return description + "\n"
1397         else:
1398             return ""
1399
1400 def printUsage(commands):
1401     print "usage: %s <command> [options]" % sys.argv[0]
1402     print ""
1403     print "valid commands: %s" % ", ".join(commands)
1404     print ""
1405     print "Try %s <command> --help for command specific help." % sys.argv[0]
1406     print ""
1407
1408 commands = {
1409     "debug" : P4Debug,
1410     "submit" : P4Submit,
1411     "sync" : P4Sync,
1412     "rebase" : P4Rebase,
1413     "clone" : P4Clone,
1414     "rollback" : P4RollBack
1415 }
1416
1417
1418 def main():
1419     if len(sys.argv[1:]) == 0:
1420         printUsage(commands.keys())
1421         sys.exit(2)
1422
1423     cmd = ""
1424     cmdName = sys.argv[1]
1425     try:
1426         klass = commands[cmdName]
1427         cmd = klass()
1428     except KeyError:
1429         print "unknown command %s" % cmdName
1430         print ""
1431         printUsage(commands.keys())
1432         sys.exit(2)
1433
1434     options = cmd.options
1435     cmd.gitdir = os.environ.get("GIT_DIR", None)
1436
1437     args = sys.argv[2:]
1438
1439     if len(options) > 0:
1440         options.append(optparse.make_option("--git-dir", dest="gitdir"))
1441
1442         parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1443                                        options,
1444                                        description = cmd.description,
1445                                        formatter = HelpFormatter())
1446
1447         (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1448     global verbose
1449     verbose = cmd.verbose
1450     if cmd.needsGit:
1451         if cmd.gitdir == None:
1452             cmd.gitdir = os.path.abspath(".git")
1453             if not isValidGitDir(cmd.gitdir):
1454                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1455                 if os.path.exists(cmd.gitdir):
1456                     cdup = read_pipe("git rev-parse --show-cdup").strip()
1457                     if len(cdup) > 0:
1458                         os.chdir(cdup);
1459
1460         if not isValidGitDir(cmd.gitdir):
1461             if isValidGitDir(cmd.gitdir + "/.git"):
1462                 cmd.gitdir += "/.git"
1463             else:
1464                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1465
1466         os.environ["GIT_DIR"] = cmd.gitdir
1467
1468     if not cmd.run(args):
1469         parser.print_help()
1470
1471
1472 if __name__ == '__main__':
1473     main()