contrib/fast-import/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 <hausmann@kde.org>
   6 # Copyright: 2007 Simon Hausmann <hausmann@kde.org>
   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 from sets import Set;
  14
  15 gitdir = os.environ.get("GIT_DIR", "")
  16
  17 def mypopen(command):
  18     return os.popen(command, "rb");
  19
  20 def p4CmdList(cmd):
  21     cmd = "p4 -G %s" % cmd
  22     pipe = os.popen(cmd, "rb")
  23
  24     result = []
  25     try:
  26         while True:
  27             entry = marshal.load(pipe)
  28             result.append(entry)
  29     except EOFError:
  30         pass
  31     exitCode = pipe.close()
  32     if exitCode != None:
  33         entry = {}
  34         entry["p4ExitCode"] = exitCode
  35         result.append(entry)
  36
  37     return result
  38
  39 def p4Cmd(cmd):
  40     list = p4CmdList(cmd)
  41     result = {}
  42     for entry in list:
  43         result.update(entry)
  44     return result;
  45
  46 def p4Where(depotPath):
  47     if not depotPath.endswith("/"):
  48         depotPath += "/"
  49     output = p4Cmd("where %s..." % depotPath)
  50     if output["code"] == "error":
  51         return ""
  52     clientPath = ""
  53     if "path" in output:
  54         clientPath = output.get("path")
  55     elif "data" in output:
  56         data = output.get("data")
  57         lastSpace = data.rfind(" ")
  58         clientPath = data[lastSpace + 1:]
  59
  60     if clientPath.endswith("..."):
  61         clientPath = clientPath[:-3]
  62     return clientPath
  63
  64 def die(msg):
  65     sys.stderr.write(msg + "\n")
  66     sys.exit(1)
  67
  68 def currentGitBranch():
  69     return mypopen("git name-rev HEAD").read().split(" ")[1][:-1]
  70
  71 def isValidGitDir(path):
  72     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  73         return True;
  74     return False
  75
  76 def parseRevision(ref):
  77     return mypopen("git rev-parse %s" % ref).read()[:-1]
  78
  79 def system(cmd):
  80     if os.system(cmd) != 0:
  81         die("command failed: %s" % cmd)
  82
  83 def extractLogMessageFromGitCommit(commit):
  84     logMessage = ""
  85     foundTitle = False
  86     for log in mypopen("git cat-file commit %s" % commit).readlines():
  87        if not foundTitle:
  88            if len(log) == 1:
  89                foundTitle = True
  90            continue
  91
  92        logMessage += log
  93     return logMessage
  94
  95 def extractDepotPathAndChangeFromGitLog(log):
  96     values = {}
  97     for line in log.split("\n"):
  98         line = line.strip()
  99         if line.startswith("[git-p4:") and line.endswith("]"):
 100             line = line[8:-1].strip()
 101             for assignment in line.split(":"):
 102                 variable = assignment.strip()
 103                 value = ""
 104                 equalPos = assignment.find("=")
 105                 if equalPos != -1:
 106                     variable = assignment[:equalPos].strip()
 107                     value = assignment[equalPos + 1:].strip()
 108                     if value.startswith("\"") and value.endswith("\""):
 109                         value = value[1:-1]
 110                 values[variable] = value
 111
 112     return values.get("depot-path"), values.get("change")
 113
 114 def gitBranchExists(branch):
 115     proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 116     return proc.wait() == 0;
 117
 118 def gitConfig(key):
 119     return mypopen("git config %s" % key).read()[:-1]
 120
 121 class Command:
 122     def __init__(self):
 123         self.usage = "usage: %prog [options]"
 124         self.needsGit = True
 125
 126 class P4Debug(Command):
 127     def __init__(self):
 128         Command.__init__(self)
 129         self.options = [
 130         ]
 131         self.description = "A tool to debug the output of p4 -G."
 132         self.needsGit = False
 133
 134     def run(self, args):
 135         for output in p4CmdList(" ".join(args)):
 136             print output
 137         return True
 138
 139 class P4RollBack(Command):
 140     def __init__(self):
 141         Command.__init__(self)
 142         self.options = [
 143             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 144             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 145         ]
 146         self.description = "A tool to debug the multi-branch import. Don't use :)"
 147         self.verbose = False
 148         self.rollbackLocalBranches = False
 149
 150     def run(self, args):
 151         if len(args) != 1:
 152             return False
 153         maxChange = int(args[0])
 154
 155         if "p4ExitCode" in p4Cmd("changes -m 1"):
 156             die("Problems executing p4");
 157
 158         if self.rollbackLocalBranches:
 159             refPrefix = "refs/heads/"
 160             lines = mypopen("git rev-parse --symbolic --branches").readlines()
 161         else:
 162             refPrefix = "refs/remotes/"
 163             lines = mypopen("git rev-parse --symbolic --remotes").readlines()
 164
 165         for line in lines:
 166             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 167                 ref = refPrefix + line[:-1]
 168                 log = extractLogMessageFromGitCommit(ref)
 169                 depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 170                 changed = False
 171
 172                 if len(p4Cmd("changes -m 1 %s...@%s" % (depotPath, maxChange))) == 0:
 173                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 174                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 175                     continue
 176
 177                 while len(change) > 0 and int(change) > maxChange:
 178                     changed = True
 179                     if self.verbose:
 180                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 181                     system("git update-ref %s \"%s^\"" % (ref, ref))
 182                     log = extractLogMessageFromGitCommit(ref)
 183                     depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 184
 185                 if changed:
 186                     print "%s rewound to %s" % (ref, change)
 187
 188         return True
 189
 190 class P4Submit(Command):
 191     def __init__(self):
 192         Command.__init__(self)
 193         self.options = [
 194                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 195                 optparse.make_option("--origin", dest="origin"),
 196                 optparse.make_option("--reset", action="store_true", dest="reset"),
 197                 optparse.make_option("--log-substitutions", dest="substFile"),
 198                 optparse.make_option("--dry-run", action="store_true"),
 199                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 200                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 201         ]
 202         self.description = "Submit changes from git to the perforce depot."
 203         self.usage += " [name of git branch to submit into perforce depot]"
 204         self.firstTime = True
 205         self.reset = False
 206         self.interactive = True
 207         self.dryRun = False
 208         self.substFile = ""
 209         self.firstTime = True
 210         self.origin = ""
 211         self.directSubmit = False
 212         self.trustMeLikeAFool = False
 213
 214         self.logSubstitutions = {}
 215         self.logSubstitutions["<enter description here>"] = "%log%"
 216         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 217
 218     def check(self):
 219         if len(p4CmdList("opened ...")) > 0:
 220             die("You have files opened with perforce! Close them before starting the sync.")
 221
 222     def start(self):
 223         if len(self.config) > 0 and not self.reset:
 224             die("Cannot start sync. Previous sync config found at %s\nIf you want to start submitting again from scratch maybe you want to call git-p4 submit --reset" % self.configFile)
 225
 226         commits = []
 227         if self.directSubmit:
 228             commits.append("0")
 229         else:
 230             for line in mypopen("git rev-list --no-merges %s..%s" % (self.origin, self.master)).readlines():
 231                 commits.append(line[:-1])
 232             commits.reverse()
 233
 234         self.config["commits"] = commits
 235
 236     def prepareLogMessage(self, template, message):
 237         result = ""
 238
 239         for line in template.split("\n"):
 240             if line.startswith("#"):
 241                 result += line + "\n"
 242                 continue
 243
 244             substituted = False
 245             for key in self.logSubstitutions.keys():
 246                 if line.find(key) != -1:
 247                     value = self.logSubstitutions[key]
 248                     value = value.replace("%log%", message)
 249                     if value != "@remove@":
 250                         result += line.replace(key, value) + "\n"
 251                     substituted = True
 252                     break
 253
 254             if not substituted:
 255                 result += line + "\n"
 256
 257         return result
 258
 259     def apply(self, id):
 260         if self.directSubmit:
 261             print "Applying local change in working directory/index"
 262             diff = self.diffStatus
 263         else:
 264             print "Applying %s" % (mypopen("git log --max-count=1 --pretty=oneline %s" % id).read())
 265             diff = mypopen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 266         filesToAdd = set()
 267         filesToDelete = set()
 268         editedFiles = set()
 269         for line in diff:
 270             modifier = line[0]
 271             path = line[1:].strip()
 272             if modifier == "M":
 273                 system("p4 edit \"%s\"" % path)
 274                 editedFiles.add(path)
 275             elif modifier == "A":
 276                 filesToAdd.add(path)
 277                 if path in filesToDelete:
 278                     filesToDelete.remove(path)
 279             elif modifier == "D":
 280                 filesToDelete.add(path)
 281                 if path in filesToAdd:
 282                     filesToAdd.remove(path)
 283             else:
 284                 die("unknown modifier %s for %s" % (modifier, path))
 285
 286         if self.directSubmit:
 287             diffcmd = "cat \"%s\"" % self.diffFile
 288         else:
 289             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 290         patchcmd = diffcmd + " | git apply "
 291         tryPatchCmd = patchcmd + "--check -"
 292         applyPatchCmd = patchcmd + "--check --apply -"
 293
 294         if os.system(tryPatchCmd) != 0:
 295             print "Unfortunately applying the change failed!"
 296             print "What do you want to do?"
 297             response = "x"
 298             while response != "s" and response != "a" and response != "w":
 299                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly and with .rej files / [w]rite the patch to a file (patch.txt) ")
 300             if response == "s":
 301                 print "Skipping! Good luck with the next patches..."
 302                 return
 303             elif response == "a":
 304                 os.system(applyPatchCmd)
 305                 if len(filesToAdd) > 0:
 306                     print "You may also want to call p4 add on the following files:"
 307                     print " ".join(filesToAdd)
 308                 if len(filesToDelete):
 309                     print "The following files should be scheduled for deletion with p4 delete:"
 310                     print " ".join(filesToDelete)
 311                 die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 312             elif response == "w":
 313                 system(diffcmd + " > patch.txt")
 314                 print "Patch saved to patch.txt in %s !" % self.clientPath
 315                 die("Please resolve and submit the conflict manually and continue afterwards with git-p4 submit --continue")
 316
 317         system(applyPatchCmd)
 318
 319         for f in filesToAdd:
 320             system("p4 add %s" % f)
 321         for f in filesToDelete:
 322             system("p4 revert %s" % f)
 323             system("p4 delete %s" % f)
 324
 325         logMessage = ""
 326         if not self.directSubmit:
 327             logMessage = extractLogMessageFromGitCommit(id)
 328             logMessage = logMessage.replace("\n", "\n\t")
 329             logMessage = logMessage[:-1]
 330
 331         template = mypopen("p4 change -o").read()
 332
 333         if self.interactive:
 334             submitTemplate = self.prepareLogMessage(template, logMessage)
 335             diff = mypopen("p4 diff -du ...").read()
 336
 337             for newFile in filesToAdd:
 338                 diff += "==== new file ====\n"
 339                 diff += "--- /dev/null\n"
 340                 diff += "+++ %s\n" % newFile
 341                 f = open(newFile, "r")
 342                 for line in f.readlines():
 343                     diff += "+" + line
 344                 f.close()
 345
 346             separatorLine = "######## everything below this line is just the diff #######"
 347             if platform.system() == "Windows":
 348                 separatorLine += "\r"
 349             separatorLine += "\n"
 350
 351             response = "e"
 352             if self.trustMeLikeAFool:
 353                 response = "y"
 354
 355             firstIteration = True
 356             while response == "e":
 357                 if not firstIteration:
 358                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 359                 firstIteration = False
 360                 if response == "e":
 361                     [handle, fileName] = tempfile.mkstemp()
 362                     tmpFile = os.fdopen(handle, "w+")
 363                     tmpFile.write(submitTemplate + separatorLine + diff)
 364                     tmpFile.close()
 365                     defaultEditor = "vi"
 366                     if platform.system() == "Windows":
 367                         defaultEditor = "notepad"
 368                     editor = os.environ.get("EDITOR", defaultEditor);
 369                     system(editor + " " + fileName)
 370                     tmpFile = open(fileName, "rb")
 371                     message = tmpFile.read()
 372                     tmpFile.close()
 373                     os.remove(fileName)
 374                     submitTemplate = message[:message.index(separatorLine)]
 375
 376             if response == "y" or response == "yes":
 377                if self.dryRun:
 378                    print submitTemplate
 379                    raw_input("Press return to continue...")
 380                else:
 381                    if self.directSubmit:
 382                        print "Submitting to git first"
 383                        os.chdir(self.oldWorkingDirectory)
 384                        pipe = os.popen("git commit -a -F -", "wb")
 385                        pipe.write(submitTemplate)
 386                        pipe.close()
 387                        os.chdir(self.clientPath)
 388
 389                    pipe = os.popen("p4 submit -i", "wb")
 390                    pipe.write(submitTemplate)
 391                    pipe.close()
 392             elif response == "s":
 393                 for f in editedFiles:
 394                     system("p4 revert \"%s\"" % f);
 395                 for f in filesToAdd:
 396                     system("p4 revert \"%s\"" % f);
 397                     system("rm %s" %f)
 398                 for f in filesToDelete:
 399                     system("p4 delete \"%s\"" % f);
 400                 return
 401             else:
 402                 print "Not submitting!"
 403                 self.interactive = False
 404         else:
 405             fileName = "submit.txt"
 406             file = open(fileName, "w+")
 407             file.write(self.prepareLogMessage(template, logMessage))
 408             file.close()
 409             print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 410
 411     def run(self, args):
 412         global gitdir
 413         # make gitdir absolute so we can cd out into the perforce checkout
 414         gitdir = os.path.abspath(gitdir)
 415         os.environ["GIT_DIR"] = gitdir
 416
 417         if len(args) == 0:
 418             self.master = currentGitBranch()
 419             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 420                 die("Detecting current git branch failed!")
 421         elif len(args) == 1:
 422             self.master = args[0]
 423         else:
 424             return False
 425
 426         depotPath = ""
 427         if gitBranchExists("p4"):
 428             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 429         if len(depotPath) == 0 and gitBranchExists("origin"):
 430             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 431
 432         if len(depotPath) == 0:
 433             print "Internal error: cannot locate perforce depot path from existing branches"
 434             sys.exit(128)
 435
 436         self.clientPath = p4Where(depotPath)
 437
 438         if len(self.clientPath) == 0:
 439             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 440             sys.exit(128)
 441
 442         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 443         self.oldWorkingDirectory = os.getcwd()
 444
 445         if self.directSubmit:
 446             self.diffStatus = mypopen("git diff -r --name-status HEAD").readlines()
 447             if len(self.diffStatus) == 0:
 448                 print "No changes in working directory to submit."
 449                 return True
 450             patch = mypopen("git diff -p --binary --diff-filter=ACMRTUXB HEAD").read()
 451             self.diffFile = gitdir + "/p4-git-diff"
 452             f = open(self.diffFile, "wb")
 453             f.write(patch)
 454             f.close();
 455
 456         os.chdir(self.clientPath)
 457         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 458         if response == "y" or response == "yes":
 459             system("p4 sync ...")
 460
 461         if len(self.origin) == 0:
 462             if gitBranchExists("p4"):
 463                 self.origin = "p4"
 464             else:
 465                 self.origin = "origin"
 466
 467         if self.reset:
 468             self.firstTime = True
 469
 470         if len(self.substFile) > 0:
 471             for line in open(self.substFile, "r").readlines():
 472                 tokens = line[:-1].split("=")
 473                 self.logSubstitutions[tokens[0]] = tokens[1]
 474
 475         self.check()
 476         self.configFile = gitdir + "/p4-git-sync.cfg"
 477         self.config = shelve.open(self.configFile, writeback=True)
 478
 479         if self.firstTime:
 480             self.start()
 481
 482         commits = self.config.get("commits", [])
 483
 484         while len(commits) > 0:
 485             self.firstTime = False
 486             commit = commits[0]
 487             commits = commits[1:]
 488             self.config["commits"] = commits
 489             self.apply(commit)
 490             if not self.interactive:
 491                 break
 492
 493         self.config.close()
 494
 495         if self.directSubmit:
 496             os.remove(self.diffFile)
 497
 498         if len(commits) == 0:
 499             if self.firstTime:
 500                 print "No changes found to apply between %s and current HEAD" % self.origin
 501             else:
 502                 print "All changes applied!"
 503                 os.chdir(self.oldWorkingDirectory)
 504                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 505                 if response == "y" or response == "yes":
 506                     rebase = P4Rebase()
 507                     rebase.run([])
 508             os.remove(self.configFile)
 509
 510         return True
 511
 512 class P4Sync(Command):
 513     def __init__(self):
 514         Command.__init__(self)
 515         self.options = [
 516                 optparse.make_option("--branch", dest="branch"),
 517                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 518                 optparse.make_option("--changesfile", dest="changesFile"),
 519                 optparse.make_option("--silent", dest="silent", action="store_true"),
 520                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 521                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 522                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false"),
 523                 optparse.make_option("--max-changes", dest="maxChanges")
 524         ]
 525         self.description = """Imports from Perforce into a git repository.\n
 526     example:
 527     //depot/my/project/ -- to import the current head
 528     //depot/my/project/@all -- to import everything
 529     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 530
 531     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 532
 533         self.usage += " //depot/path[@revRange]"
 534
 535         self.silent = False
 536         self.createdBranches = Set()
 537         self.committedChanges = Set()
 538         self.branch = ""
 539         self.detectBranches = False
 540         self.detectLabels = False
 541         self.changesFile = ""
 542         self.syncWithOrigin = True
 543         self.verbose = False
 544         self.importIntoRemotes = True
 545         self.maxChanges = ""
 546         self.isWindows = (platform.system() == "Windows")
 547
 548         if gitConfig("git-p4.syncFromOrigin") == "false":
 549             self.syncWithOrigin = False
 550
 551     def p4File(self, depotPath):
 552         return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 553
 554     def extractFilesFromCommit(self, commit):
 555         files = []
 556         fnum = 0
 557         while commit.has_key("depotFile%s" % fnum):
 558             path =  commit["depotFile%s" % fnum]
 559             if not path.startswith(self.depotPath):
 560     #            if not self.silent:
 561     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 562                 fnum = fnum + 1
 563                 continue
 564
 565             file = {}
 566             file["path"] = path
 567             file["rev"] = commit["rev%s" % fnum]
 568             file["action"] = commit["action%s" % fnum]
 569             file["type"] = commit["type%s" % fnum]
 570             files.append(file)
 571             fnum = fnum + 1
 572         return files
 573
 574     def splitFilesIntoBranches(self, commit):
 575         branches = {}
 576
 577         fnum = 0
 578         while commit.has_key("depotFile%s" % fnum):
 579             path =  commit["depotFile%s" % fnum]
 580             if not path.startswith(self.depotPath):
 581     #            if not self.silent:
 582     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 583                 fnum = fnum + 1
 584                 continue
 585
 586             file = {}
 587             file["path"] = path
 588             file["rev"] = commit["rev%s" % fnum]
 589             file["action"] = commit["action%s" % fnum]
 590             file["type"] = commit["type%s" % fnum]
 591             fnum = fnum + 1
 592
 593             relPath = path[len(self.depotPath):]
 594
 595             for branch in self.knownBranches.keys():
 596                 if relPath.startswith(branch + "/"): # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 597                     if branch not in branches:
 598                         branches[branch] = []
 599                     branches[branch].append(file)
 600
 601         return branches
 602
 603     def commit(self, details, files, branch, branchPrefix, parent = ""):
 604         epoch = details["time"]
 605         author = details["user"]
 606
 607         if self.verbose:
 608             print "commit into %s" % branch
 609
 610         self.gitStream.write("commit %s\n" % branch)
 611     #    gitStream.write("mark :%s\n" % details["change"])
 612         self.committedChanges.add(int(details["change"]))
 613         committer = ""
 614         if author not in self.users:
 615             self.getUserMapFromPerforceServer()
 616         if author in self.users:
 617             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 618         else:
 619             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 620
 621         self.gitStream.write("committer %s\n" % committer)
 622
 623         self.gitStream.write("data <<EOT\n")
 624         self.gitStream.write(details["desc"])
 625         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 626         self.gitStream.write("EOT\n\n")
 627
 628         if len(parent) > 0:
 629             if self.verbose:
 630                 print "parent %s" % parent
 631             self.gitStream.write("from %s\n" % parent)
 632
 633         for file in files:
 634             path = file["path"]
 635             if not path.startswith(branchPrefix):
 636     #            if not silent:
 637     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 638                 continue
 639             rev = file["rev"]
 640             depotPath = path + "#" + rev
 641             relPath = path[len(branchPrefix):]
 642             action = file["action"]
 643
 644             if file["type"] == "apple":
 645                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 646                 continue
 647
 648             if action == "delete":
 649                 self.gitStream.write("D %s\n" % relPath)
 650             else:
 651                 mode = 644
 652                 if file["type"].startswith("x"):
 653                     mode = 755
 654
 655                 data = self.p4File(depotPath)
 656
 657                 if self.isWindows and file["type"].endswith("text"):
 658                     data = data.replace("\r\n", "\n")
 659
 660                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 661                 self.gitStream.write("data %s\n" % len(data))
 662                 self.gitStream.write(data)
 663                 self.gitStream.write("\n")
 664
 665         self.gitStream.write("\n")
 666
 667         change = int(details["change"])
 668
 669         if self.labels.has_key(change):
 670             label = self.labels[change]
 671             labelDetails = label[0]
 672             labelRevisions = label[1]
 673             if self.verbose:
 674                 print "Change %s is labelled %s" % (change, labelDetails)
 675
 676             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 677
 678             if len(files) == len(labelRevisions):
 679
 680                 cleanedFiles = {}
 681                 for info in files:
 682                     if info["action"] == "delete":
 683                         continue
 684                     cleanedFiles[info["depotFile"]] = info["rev"]
 685
 686                 if cleanedFiles == labelRevisions:
 687                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 688                     self.gitStream.write("from %s\n" % branch)
 689
 690                     owner = labelDetails["Owner"]
 691                     tagger = ""
 692                     if author in self.users:
 693                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 694                     else:
 695                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 696                     self.gitStream.write("tagger %s\n" % tagger)
 697                     self.gitStream.write("data <<EOT\n")
 698                     self.gitStream.write(labelDetails["Description"])
 699                     self.gitStream.write("EOT\n\n")
 700
 701                 else:
 702                     if not self.silent:
 703                         print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 704
 705             else:
 706                 if not self.silent:
 707                     print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 708
 709     def getUserMapFromPerforceServer(self):
 710         if self.userMapFromPerforceServer:
 711             return
 712         self.users = {}
 713
 714         for output in p4CmdList("users"):
 715             if not output.has_key("User"):
 716                 continue
 717             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 718
 719         cache = open(gitdir + "/p4-usercache.txt", "wb")
 720         for user in self.users.keys():
 721             cache.write("%s\t%s\n" % (user, self.users[user]))
 722         cache.close();
 723         self.userMapFromPerforceServer = True
 724
 725     def loadUserMapFromCache(self):
 726         self.users = {}
 727         self.userMapFromPerforceServer = False
 728         try:
 729             cache = open(gitdir + "/p4-usercache.txt", "rb")
 730             lines = cache.readlines()
 731             cache.close()
 732             for line in lines:
 733                 entry = line[:-1].split("\t")
 734                 self.users[entry[0]] = entry[1]
 735         except IOError:
 736             self.getUserMapFromPerforceServer()
 737
 738     def getLabels(self):
 739         self.labels = {}
 740
 741         l = p4CmdList("labels %s..." % self.depotPath)
 742         if len(l) > 0 and not self.silent:
 743             print "Finding files belonging to labels in %s" % self.depotPath
 744
 745         for output in l:
 746             label = output["label"]
 747             revisions = {}
 748             newestChange = 0
 749             if self.verbose:
 750                 print "Querying files for label %s" % label
 751             for file in p4CmdList("files %s...@%s" % (self.depotPath, label)):
 752                 revisions[file["depotFile"]] = file["rev"]
 753                 change = int(file["change"])
 754                 if change > newestChange:
 755                     newestChange = change
 756
 757             self.labels[newestChange] = [output, revisions]
 758
 759         if self.verbose:
 760             print "Label changes: %s" % self.labels.keys()
 761
 762     def getBranchMapping(self):
 763         self.projectName = self.depotPath[self.depotPath[:-1].rfind("/") + 1:]
 764
 765         for info in p4CmdList("branches"):
 766             details = p4Cmd("branch -o %s" % info["branch"])
 767             viewIdx = 0
 768             while details.has_key("View%s" % viewIdx):
 769                 paths = details["View%s" % viewIdx].split(" ")
 770                 viewIdx = viewIdx + 1
 771                 # require standard //depot/foo/... //depot/bar/... mapping
 772                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 773                     continue
 774                 source = paths[0]
 775                 destination = paths[1]
 776                 if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 777                     source = source[len(self.depotPath):-4]
 778                     destination = destination[len(self.depotPath):-4]
 779                     if destination not in self.knownBranches:
 780                         self.knownBranches[destination] = source
 781                     if source not in self.knownBranches:
 782                         self.knownBranches[source] = source
 783
 784     def listExistingP4GitBranches(self):
 785         self.p4BranchesInGit = []
 786
 787         cmdline = "git rev-parse --symbolic "
 788         if self.importIntoRemotes:
 789             cmdline += " --remotes"
 790         else:
 791             cmdline += " --branches"
 792
 793         for line in mypopen(cmdline).readlines():
 794             if self.importIntoRemotes and ((not line.startswith("p4/")) or line == "p4/HEAD\n"):
 795                 continue
 796             if self.importIntoRemotes:
 797                 # strip off p4
 798                 branch = line[3:-1]
 799             else:
 800                 branch = line[:-1]
 801             self.p4BranchesInGit.append(branch)
 802             self.initialParents[self.refPrefix + branch] = parseRevision(line[:-1])
 803
 804     def createOrUpdateBranchesFromOrigin(self):
 805         if not self.silent:
 806             print "Creating/updating branch(es) in %s based on origin branch(es)" % self.refPrefix
 807
 808         for line in mypopen("git rev-parse --symbolic --remotes"):
 809             if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 810                 continue
 811
 812             headName = line[len("origin/"):-1]
 813             remoteHead = self.refPrefix + headName
 814             originHead = "origin/" + headName
 815
 816             [originPreviousDepotPath, originP4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(originHead))
 817             if len(originPreviousDepotPath) == 0 or len(originP4Change) == 0:
 818                 continue
 819
 820             update = False
 821             if not gitBranchExists(remoteHead):
 822                 if self.verbose:
 823                     print "creating %s" % remoteHead
 824                 update = True
 825             else:
 826                 [p4PreviousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(remoteHead))
 827                 if len(p4Change) > 0:
 828                     if originPreviousDepotPath == p4PreviousDepotPath:
 829                         originP4Change = int(originP4Change)
 830                         p4Change = int(p4Change)
 831                         if originP4Change > p4Change:
 832                             print "%s (%s) is newer than %s (%s). Updating p4 branch from origin." % (originHead, originP4Change, remoteHead, p4Change)
 833                             update = True
 834                     else:
 835                         print "Ignoring: %s was imported from %s while %s was imported from %s" % (originHead, originPreviousDepotPath, remoteHead, p4PreviousDepotPath)
 836
 837             if update:
 838                 system("git update-ref %s %s" % (remoteHead, originHead))
 839
 840     def run(self, args):
 841         self.depotPath = ""
 842         self.changeRange = ""
 843         self.initialParent = ""
 844         self.previousDepotPath = ""
 845         # map from branch depot path to parent branch
 846         self.knownBranches = {}
 847         self.initialParents = {}
 848         self.hasOrigin = gitBranchExists("origin")
 849
 850         if self.importIntoRemotes:
 851             self.refPrefix = "refs/remotes/p4/"
 852         else:
 853             self.refPrefix = "refs/heads/"
 854
 855         if self.syncWithOrigin:
 856             if self.hasOrigin:
 857                 if not self.silent:
 858                     print "Syncing with origin first by calling git fetch origin"
 859                 system("git fetch origin")
 860
 861         createP4HeadRef = False;
 862
 863         if len(self.branch) == 0:
 864             self.branch = self.refPrefix + "master"
 865             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
 866                 system("git update-ref %s refs/heads/p4" % self.branch)
 867                 system("git branch -D p4");
 868             # create it /after/ importing, when master exists
 869             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
 870                 createP4HeadRef = True
 871
 872         if len(args) == 0:
 873             if self.hasOrigin:
 874                 self.createOrUpdateBranchesFromOrigin()
 875             self.listExistingP4GitBranches()
 876
 877             if len(self.p4BranchesInGit) > 1:
 878                 if not self.silent:
 879                     print "Importing from/into multiple branches"
 880                 self.detectBranches = True
 881
 882             if self.verbose:
 883                 print "branches: %s" % self.p4BranchesInGit
 884
 885             p4Change = 0
 886             for branch in self.p4BranchesInGit:
 887                 depotPath, change = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(self.refPrefix + branch))
 888
 889                 if self.verbose:
 890                     print "path %s change %s" % (depotPath, change)
 891
 892                 if len(depotPath) > 0 and len(change) > 0:
 893                     change = int(change) + 1
 894                     p4Change = max(p4Change, change)
 895
 896                     if len(self.previousDepotPath) == 0:
 897                         self.previousDepotPath = depotPath
 898                     else:
 899                         i = 0
 900                         l = min(len(self.previousDepotPath), len(depotPath))
 901                         while i < l and self.previousDepotPath[i] == depotPath[i]:
 902                             i = i + 1
 903                         self.previousDepotPath = self.previousDepotPath[:i]
 904
 905             if p4Change > 0:
 906                 self.depotPath = self.previousDepotPath
 907                 self.changeRange = "@%s,#head" % p4Change
 908                 self.initialParent = parseRevision(self.branch)
 909                 if not self.silent and not self.detectBranches:
 910                     print "Performing incremental import into %s git branch" % self.branch
 911
 912         if not self.branch.startswith("refs/"):
 913             self.branch = "refs/heads/" + self.branch
 914
 915         if len(self.depotPath) != 0:
 916             self.depotPath = self.depotPath[:-1]
 917
 918         if len(args) == 0 and len(self.depotPath) != 0:
 919             if not self.silent:
 920                 print "Depot path: %s" % self.depotPath
 921         elif len(args) != 1:
 922             return False
 923         else:
 924             if len(self.depotPath) != 0 and self.depotPath != args[0]:
 925                 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.depotPath, args[0])
 926                 sys.exit(1)
 927             self.depotPath = args[0]
 928
 929         self.revision = ""
 930         self.users = {}
 931
 932         if self.depotPath.find("@") != -1:
 933             atIdx = self.depotPath.index("@")
 934             self.changeRange = self.depotPath[atIdx:]
 935             if self.changeRange == "@all":
 936                 self.changeRange = ""
 937             elif self.changeRange.find(",") == -1:
 938                 self.revision = self.changeRange
 939                 self.changeRange = ""
 940             self.depotPath = self.depotPath[0:atIdx]
 941         elif self.depotPath.find("#") != -1:
 942             hashIdx = self.depotPath.index("#")
 943             self.revision = self.depotPath[hashIdx:]
 944             self.depotPath = self.depotPath[0:hashIdx]
 945         elif len(self.previousDepotPath) == 0:
 946             self.revision = "#head"
 947
 948         if self.depotPath.endswith("..."):
 949             self.depotPath = self.depotPath[:-3]
 950
 951         if not self.depotPath.endswith("/"):
 952             self.depotPath += "/"
 953
 954         self.loadUserMapFromCache()
 955         self.labels = {}
 956         if self.detectLabels:
 957             self.getLabels();
 958
 959         if self.detectBranches:
 960             self.getBranchMapping();
 961             if self.verbose:
 962                 print "p4-git branches: %s" % self.p4BranchesInGit
 963                 print "initial parents: %s" % self.initialParents
 964             for b in self.p4BranchesInGit:
 965                 if b != "master":
 966                     b = b[len(self.projectName):]
 967                 self.createdBranches.add(b)
 968
 969         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
 970
 971         importProcess = subprocess.Popen(["git", "fast-import"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE);
 972         self.gitOutput = importProcess.stdout
 973         self.gitStream = importProcess.stdin
 974         self.gitError = importProcess.stderr
 975
 976         if len(self.revision) > 0:
 977             print "Doing initial import of %s from revision %s" % (self.depotPath, self.revision)
 978
 979             details = { "user" : "git perforce import user", "time" : int(time.time()) }
 980             details["desc"] = "Initial import of %s from the state at revision %s" % (self.depotPath, self.revision)
 981             details["change"] = self.revision
 982             newestRevision = 0
 983
 984             fileCnt = 0
 985             for info in p4CmdList("files %s...%s" % (self.depotPath, self.revision)):
 986                 change = int(info["change"])
 987                 if change > newestRevision:
 988                     newestRevision = change
 989
 990                 if info["action"] == "delete":
 991                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
 992                     #fileCnt = fileCnt + 1
 993                     continue
 994
 995                 for prop in [ "depotFile", "rev", "action", "type" ]:
 996                     details["%s%s" % (prop, fileCnt)] = info[prop]
 997
 998                 fileCnt = fileCnt + 1
 999
1000             details["change"] = newestRevision
1001
1002             try:
1003                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPath)
1004             except IOError:
1005                 print "IO error with git fast-import. Is your git version recent enough?"
1006                 print self.gitError.read()
1007
1008         else:
1009             changes = []
1010
1011             if len(self.changesFile) > 0:
1012                 output = open(self.changesFile).readlines()
1013                 changeSet = Set()
1014                 for line in output:
1015                     changeSet.add(int(line))
1016
1017                 for change in changeSet:
1018                     changes.append(change)
1019
1020                 changes.sort()
1021             else:
1022                 if self.verbose:
1023                     print "Getting p4 changes for %s...%s" % (self.depotPath, self.changeRange)
1024                 output = mypopen("p4 changes %s...%s" % (self.depotPath, self.changeRange)).readlines()
1025
1026                 for line in output:
1027                     changeNum = line.split(" ")[1]
1028                     changes.append(changeNum)
1029
1030                 changes.reverse()
1031
1032                 if len(self.maxChanges) > 0:
1033                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1034
1035             if len(changes) == 0:
1036                 if not self.silent:
1037                     print "No changes to import!"
1038                 return True
1039
1040             self.updatedBranches = set()
1041
1042             cnt = 1
1043             for change in changes:
1044                 description = p4Cmd("describe %s" % change)
1045
1046                 if not self.silent:
1047                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1048                     sys.stdout.flush()
1049                 cnt = cnt + 1
1050
1051                 try:
1052                     if self.detectBranches:
1053                         branches = self.splitFilesIntoBranches(description)
1054                         for branch in branches.keys():
1055                             branchPrefix = self.depotPath + branch + "/"
1056
1057                             parent = ""
1058
1059                             filesForCommit = branches[branch]
1060
1061                             if self.verbose:
1062                                 print "branch is %s" % branch
1063
1064                             self.updatedBranches.add(branch)
1065
1066                             if branch not in self.createdBranches:
1067                                 self.createdBranches.add(branch)
1068                                 parent = self.knownBranches[branch]
1069                                 if parent == branch:
1070                                     parent = ""
1071                                 elif self.verbose:
1072                                     print "parent determined through known branches: %s" % parent
1073
1074                             # main branch? use master
1075                             if branch == "main":
1076                                 branch = "master"
1077                             else:
1078                                 branch = self.projectName + branch
1079
1080                             if parent == "main":
1081                                 parent = "master"
1082                             elif len(parent) > 0:
1083                                 parent = self.projectName + parent
1084
1085                             branch = self.refPrefix + branch
1086                             if len(parent) > 0:
1087                                 parent = self.refPrefix + parent
1088
1089                             if self.verbose:
1090                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1091
1092                             if len(parent) == 0 and branch in self.initialParents:
1093                                 parent = self.initialParents[branch]
1094                                 del self.initialParents[branch]
1095
1096                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
1097                     else:
1098                         files = self.extractFilesFromCommit(description)
1099                         self.commit(description, files, self.branch, self.depotPath, self.initialParent)
1100                         self.initialParent = ""
1101                 except IOError:
1102                     print self.gitError.read()
1103                     sys.exit(1)
1104
1105             if not self.silent:
1106                 print ""
1107                 if len(self.updatedBranches) > 0:
1108                     sys.stdout.write("Updated branches: ")
1109                     for b in self.updatedBranches:
1110                         sys.stdout.write("%s " % b)
1111                     sys.stdout.write("\n")
1112
1113
1114         self.gitStream.close()
1115         if importProcess.wait() != 0:
1116             die("fast-import failed: %s" % self.gitError.read())
1117         self.gitOutput.close()
1118         self.gitError.close()
1119
1120         if createP4HeadRef:
1121             system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1122
1123         return True
1124
1125 class P4Rebase(Command):
1126     def __init__(self):
1127         Command.__init__(self)
1128         self.options = [ ]
1129         self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
1130
1131     def run(self, args):
1132         sync = P4Sync()
1133         sync.run([])
1134         print "Rebasing the current branch"
1135         oldHead = mypopen("git rev-parse HEAD").read()[:-1]
1136         system("git rebase p4")
1137         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1138         return True
1139
1140 class P4Clone(P4Sync):
1141     def __init__(self):
1142         P4Sync.__init__(self)
1143         self.description = "Creates a new git repository and imports from Perforce into it"
1144         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1145         self.needsGit = False
1146
1147     def run(self, args):
1148         global gitdir
1149
1150         if len(args) < 1:
1151             return False
1152         depotPath = args[0]
1153         dir = ""
1154         if len(args) == 2:
1155             dir = args[1]
1156         elif len(args) > 2:
1157             return False
1158
1159         if not depotPath.startswith("//"):
1160             return False
1161
1162         if len(dir) == 0:
1163             dir = depotPath
1164             atPos = dir.rfind("@")
1165             if atPos != -1:
1166                 dir = dir[0:atPos]
1167             hashPos = dir.rfind("#")
1168             if hashPos != -1:
1169                 dir = dir[0:hashPos]
1170
1171             if dir.endswith("..."):
1172                 dir = dir[:-3]
1173
1174             if dir.endswith("/"):
1175                dir = dir[:-1]
1176
1177             slashPos = dir.rfind("/")
1178             if slashPos != -1:
1179                 dir = dir[slashPos + 1:]
1180
1181         print "Importing from %s into %s" % (depotPath, dir)
1182         os.makedirs(dir)
1183         os.chdir(dir)
1184         system("git init")
1185         gitdir = os.getcwd() + "/.git"
1186         if not P4Sync.run(self, [depotPath]):
1187             return False
1188         if self.branch != "master":
1189             if gitBranchExists("refs/remotes/p4/master"):
1190                 system("git branch master refs/remotes/p4/master")
1191                 system("git checkout -f")
1192             else:
1193                 print "Could not detect main branch. No checkout/master branch created."
1194         return True
1195
1196 class HelpFormatter(optparse.IndentedHelpFormatter):
1197     def __init__(self):
1198         optparse.IndentedHelpFormatter.__init__(self)
1199
1200     def format_description(self, description):
1201         if description:
1202             return description + "\n"
1203         else:
1204             return ""
1205
1206 def printUsage(commands):
1207     print "usage: %s <command> [options]" % sys.argv[0]
1208     print ""
1209     print "valid commands: %s" % ", ".join(commands)
1210     print ""
1211     print "Try %s <command> --help for command specific help." % sys.argv[0]
1212     print ""
1213
1214 commands = {
1215     "debug" : P4Debug(),
1216     "submit" : P4Submit(),
1217     "sync" : P4Sync(),
1218     "rebase" : P4Rebase(),
1219     "clone" : P4Clone(),
1220     "rollback" : P4RollBack()
1221 }
1222
1223 if len(sys.argv[1:]) == 0:
1224     printUsage(commands.keys())
1225     sys.exit(2)
1226
1227 cmd = ""
1228 cmdName = sys.argv[1]
1229 try:
1230     cmd = commands[cmdName]
1231 except KeyError:
1232     print "unknown command %s" % cmdName
1233     print ""
1234     printUsage(commands.keys())
1235     sys.exit(2)
1236
1237 options = cmd.options
1238 cmd.gitdir = gitdir
1239
1240 args = sys.argv[2:]
1241
1242 if len(options) > 0:
1243     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1244
1245     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1246                                    options,
1247                                    description = cmd.description,
1248                                    formatter = HelpFormatter())
1249
1250     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1251
1252 if cmd.needsGit:
1253     gitdir = cmd.gitdir
1254     if len(gitdir) == 0:
1255         gitdir = ".git"
1256         if not isValidGitDir(gitdir):
1257             gitdir = mypopen("git rev-parse --git-dir").read()[:-1]
1258             if os.path.exists(gitdir):
1259                 cdup = mypopen("git rev-parse --show-cdup").read()[:-1];
1260                 if len(cdup) > 0:
1261                     os.chdir(cdup);
1262
1263     if not isValidGitDir(gitdir):
1264         if isValidGitDir(gitdir + "/.git"):
1265             gitdir += "/.git"
1266         else:
1267             die("fatal: cannot locate git repository at %s" % gitdir)
1268
1269     os.environ["GIT_DIR"] = gitdir
1270
1271 if not cmd.run(args):
1272     parser.print_help()
1273