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 <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 isP4Exec(kind):
  67     """Determine if a Perforce 'kind' should have execute permission
  68
  69     'p4 help filetypes' gives a list of the types.  If it starts with 'x',
  70     or x follows one of a few letters.  Otherwise, if there is an 'x' after
  71     a plus sign, it is also executable"""
  72     return (re.search(r"(^[cku]?x)|\+.*x", kind) != None)
  73
  74 def p4CmdList(cmd, stdin=None, stdin_mode='w+b'):
  75     cmd = "p4 -G %s" % cmd
  76     if verbose:
  77         sys.stderr.write("Opening pipe: %s\n" % cmd)
  78
  79     # Use a temporary file to avoid deadlocks without
  80     # subprocess.communicate(), which would put another copy
  81     # of stdout into memory.
  82     stdin_file = None
  83     if stdin is not None:
  84         stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
  85         stdin_file.write(stdin)
  86         stdin_file.flush()
  87         stdin_file.seek(0)
  88
  89     p4 = subprocess.Popen(cmd, shell=True,
  90                           stdin=stdin_file,
  91                           stdout=subprocess.PIPE)
  92
  93     result = []
  94     try:
  95         while True:
  96             entry = marshal.load(p4.stdout)
  97             result.append(entry)
  98     except EOFError:
  99         pass
 100     exitCode = p4.wait()
 101     if exitCode != 0:
 102         entry = {}
 103         entry["p4ExitCode"] = exitCode
 104         result.append(entry)
 105
 106     return result
 107
 108 def p4Cmd(cmd):
 109     list = p4CmdList(cmd)
 110     result = {}
 111     for entry in list:
 112         result.update(entry)
 113     return result;
 114
 115 def p4Where(depotPath):
 116     if not depotPath.endswith("/"):
 117         depotPath += "/"
 118     output = p4Cmd("where %s..." % depotPath)
 119     if output["code"] == "error":
 120         return ""
 121     clientPath = ""
 122     if "path" in output:
 123         clientPath = output.get("path")
 124     elif "data" in output:
 125         data = output.get("data")
 126         lastSpace = data.rfind(" ")
 127         clientPath = data[lastSpace + 1:]
 128
 129     if clientPath.endswith("..."):
 130         clientPath = clientPath[:-3]
 131     return clientPath
 132
 133 def currentGitBranch():
 134     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 135
 136 def isValidGitDir(path):
 137     if (os.path.exists(path + "/HEAD")
 138         and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 139         return True;
 140     return False
 141
 142 def parseRevision(ref):
 143     return read_pipe("git rev-parse %s" % ref).strip()
 144
 145 def extractLogMessageFromGitCommit(commit):
 146     logMessage = ""
 147
 148     ## fixme: title is first line of commit, not 1st paragraph.
 149     foundTitle = False
 150     for log in read_pipe_lines("git cat-file commit %s" % commit):
 151        if not foundTitle:
 152            if len(log) == 1:
 153                foundTitle = True
 154            continue
 155
 156        logMessage += log
 157     return logMessage
 158
 159 def extractSettingsGitLog(log):
 160     values = {}
 161     for line in log.split("\n"):
 162         line = line.strip()
 163         m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 164         if not m:
 165             continue
 166
 167         assignments = m.group(1).split (':')
 168         for a in assignments:
 169             vals = a.split ('=')
 170             key = vals[0].strip()
 171             val = ('='.join (vals[1:])).strip()
 172             if val.endswith ('\"') and val.startswith('"'):
 173                 val = val[1:-1]
 174
 175             values[key] = val
 176
 177     paths = values.get("depot-paths")
 178     if not paths:
 179         paths = values.get("depot-path")
 180     if paths:
 181         values['depot-paths'] = paths.split(',')
 182     return values
 183
 184 def gitBranchExists(branch):
 185     proc = subprocess.Popen(["git", "rev-parse", branch],
 186                             stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 187     return proc.wait() == 0;
 188
 189 def gitConfig(key):
 190     return read_pipe("git config %s" % key, ignore_error=True).strip()
 191
 192 def p4BranchesInGit(branchesAreInRemotes = True):
 193     branches = {}
 194
 195     cmdline = "git rev-parse --symbolic "
 196     if branchesAreInRemotes:
 197         cmdline += " --remotes"
 198     else:
 199         cmdline += " --branches"
 200
 201     for line in read_pipe_lines(cmdline):
 202         line = line.strip()
 203
 204         ## only import to p4/
 205         if not line.startswith('p4/') or line == "p4/HEAD":
 206             continue
 207         branch = line
 208
 209         # strip off p4
 210         branch = re.sub ("^p4/", "", line)
 211
 212         branches[branch] = parseRevision(line)
 213     return branches
 214
 215 def findUpstreamBranchPoint(head = "HEAD"):
 216     branches = p4BranchesInGit()
 217     # map from depot-path to branch name
 218     branchByDepotPath = {}
 219     for branch in branches.keys():
 220         tip = branches[branch]
 221         log = extractLogMessageFromGitCommit(tip)
 222         settings = extractSettingsGitLog(log)
 223         if settings.has_key("depot-paths"):
 224             paths = ",".join(settings["depot-paths"])
 225             branchByDepotPath[paths] = "remotes/p4/" + branch
 226
 227     settings = None
 228     parent = 0
 229     while parent < 65535:
 230         commit = head + "~%s" % parent
 231         log = extractLogMessageFromGitCommit(commit)
 232         settings = extractSettingsGitLog(log)
 233         if settings.has_key("depot-paths"):
 234             paths = ",".join(settings["depot-paths"])
 235             if branchByDepotPath.has_key(paths):
 236                 return [branchByDepotPath[paths], settings]
 237
 238         parent = parent + 1
 239
 240     return ["", settings]
 241
 242 def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True):
 243     if not silent:
 244         print ("Creating/updating branch(es) in %s based on origin branch(es)"
 245                % localRefPrefix)
 246
 247     originPrefix = "origin/p4/"
 248
 249     for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 250         line = line.strip()
 251         if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
 252             continue
 253
 254         headName = line[len(originPrefix):]
 255         remoteHead = localRefPrefix + headName
 256         originHead = line
 257
 258         original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 259         if (not original.has_key('depot-paths')
 260             or not original.has_key('change')):
 261             continue
 262
 263         update = False
 264         if not gitBranchExists(remoteHead):
 265             if verbose:
 266                 print "creating %s" % remoteHead
 267             update = True
 268         else:
 269             settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 270             if settings.has_key('change') > 0:
 271                 if settings['depot-paths'] == original['depot-paths']:
 272                     originP4Change = int(original['change'])
 273                     p4Change = int(settings['change'])
 274                     if originP4Change > p4Change:
 275                         print ("%s (%s) is newer than %s (%s). "
 276                                "Updating p4 branch from origin."
 277                                % (originHead, originP4Change,
 278                                   remoteHead, p4Change))
 279                         update = True
 280                 else:
 281                     print ("Ignoring: %s was imported from %s while "
 282                            "%s was imported from %s"
 283                            % (originHead, ','.join(original['depot-paths']),
 284                               remoteHead, ','.join(settings['depot-paths'])))
 285
 286         if update:
 287             system("git update-ref %s %s" % (remoteHead, originHead))
 288
 289 def originP4BranchesExist():
 290         return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
 291
 292 def p4ChangesForPaths(depotPaths, changeRange):
 293     assert depotPaths
 294     output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, changeRange)
 295                                                         for p in depotPaths]))
 296
 297     changes = []
 298     for line in output:
 299         changeNum = line.split(" ")[1]
 300         changes.append(int(changeNum))
 301
 302     changes.sort()
 303     return changes
 304
 305 class Command:
 306     def __init__(self):
 307         self.usage = "usage: %prog [options]"
 308         self.needsGit = True
 309
 310 class P4Debug(Command):
 311     def __init__(self):
 312         Command.__init__(self)
 313         self.options = [
 314             optparse.make_option("--verbose", dest="verbose", action="store_true",
 315                                  default=False),
 316             ]
 317         self.description = "A tool to debug the output of p4 -G."
 318         self.needsGit = False
 319         self.verbose = False
 320
 321     def run(self, args):
 322         j = 0
 323         for output in p4CmdList(" ".join(args)):
 324             print 'Element: %d' % j
 325             j += 1
 326             print output
 327         return True
 328
 329 class P4RollBack(Command):
 330     def __init__(self):
 331         Command.__init__(self)
 332         self.options = [
 333             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 334             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 335         ]
 336         self.description = "A tool to debug the multi-branch import. Don't use :)"
 337         self.verbose = False
 338         self.rollbackLocalBranches = False
 339
 340     def run(self, args):
 341         if len(args) != 1:
 342             return False
 343         maxChange = int(args[0])
 344
 345         if "p4ExitCode" in p4Cmd("changes -m 1"):
 346             die("Problems executing p4");
 347
 348         if self.rollbackLocalBranches:
 349             refPrefix = "refs/heads/"
 350             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 351         else:
 352             refPrefix = "refs/remotes/"
 353             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 354
 355         for line in lines:
 356             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 357                 line = line.strip()
 358                 ref = refPrefix + line
 359                 log = extractLogMessageFromGitCommit(ref)
 360                 settings = extractSettingsGitLog(log)
 361
 362                 depotPaths = settings['depot-paths']
 363                 change = settings['change']
 364
 365                 changed = False
 366
 367                 if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 368                                                            for p in depotPaths]))) == 0:
 369                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 370                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 371                     continue
 372
 373                 while change and int(change) > maxChange:
 374                     changed = True
 375                     if self.verbose:
 376                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 377                     system("git update-ref %s \"%s^\"" % (ref, ref))
 378                     log = extractLogMessageFromGitCommit(ref)
 379                     settings =  extractSettingsGitLog(log)
 380
 381
 382                     depotPaths = settings['depot-paths']
 383                     change = settings['change']
 384
 385                 if changed:
 386                     print "%s rewound to %s" % (ref, change)
 387
 388         return True
 389
 390 class P4Submit(Command):
 391     def __init__(self):
 392         Command.__init__(self)
 393         self.options = [
 394                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 395                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 396                 optparse.make_option("--origin", dest="origin"),
 397                 optparse.make_option("--reset", action="store_true", dest="reset"),
 398                 optparse.make_option("--log-substitutions", dest="substFile"),
 399                 optparse.make_option("--dry-run", action="store_true"),
 400                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 401                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 402                 optparse.make_option("-M", dest="detectRename", action="store_true"),
 403         ]
 404         self.description = "Submit changes from git to the perforce depot."
 405         self.usage += " [name of git branch to submit into perforce depot]"
 406         self.firstTime = True
 407         self.reset = False
 408         self.interactive = True
 409         self.dryRun = False
 410         self.substFile = ""
 411         self.firstTime = True
 412         self.origin = ""
 413         self.directSubmit = False
 414         self.trustMeLikeAFool = False
 415         self.detectRename = False
 416         self.verbose = False
 417         self.isWindows = (platform.system() == "Windows")
 418
 419         self.logSubstitutions = {}
 420         self.logSubstitutions["<enter description here>"] = "%log%"
 421         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 422
 423     def check(self):
 424         if len(p4CmdList("opened ...")) > 0:
 425             die("You have files opened with perforce! Close them before starting the sync.")
 426
 427     def start(self):
 428         if len(self.config) > 0 and not self.reset:
 429             die("Cannot start sync. Previous sync config found at %s\n"
 430                 "If you want to start submitting again from scratch "
 431                 "maybe you want to call git-p4 submit --reset" % self.configFile)
 432
 433         commits = []
 434         if self.directSubmit:
 435             commits.append("0")
 436         else:
 437             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 438                 commits.append(line.strip())
 439             commits.reverse()
 440
 441         self.config["commits"] = commits
 442
 443     def prepareLogMessage(self, template, message):
 444         result = ""
 445
 446         for line in template.split("\n"):
 447             if line.startswith("#"):
 448                 result += line + "\n"
 449                 continue
 450
 451             substituted = False
 452             for key in self.logSubstitutions.keys():
 453                 if line.find(key) != -1:
 454                     value = self.logSubstitutions[key]
 455                     value = value.replace("%log%", message)
 456                     if value != "@remove@":
 457                         result += line.replace(key, value) + "\n"
 458                     substituted = True
 459                     break
 460
 461             if not substituted:
 462                 result += line + "\n"
 463
 464         return result
 465
 466     def prepareSubmitTemplate(self):
 467         # remove lines in the Files section that show changes to files outside the depot path we're committing into
 468         template = ""
 469         inFilesSection = False
 470         for line in read_pipe_lines("p4 change -o"):
 471             if inFilesSection:
 472                 if line.startswith("\t"):
 473                     # path starts and ends with a tab
 474                     path = line[1:]
 475                     lastTab = path.rfind("\t")
 476                     if lastTab != -1:
 477                         path = path[:lastTab]
 478                         if not path.startswith(self.depotPath):
 479                             continue
 480                 else:
 481                     inFilesSection = False
 482             else:
 483                 if line.startswith("Files:"):
 484                     inFilesSection = True
 485
 486             template += line
 487
 488         return template
 489
 490     def applyCommit(self, id):
 491         if self.directSubmit:
 492             print "Applying local change in working directory/index"
 493             diff = self.diffStatus
 494         else:
 495             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 496             diffOpts = ("", "-M")[self.detectRename]
 497             diff = read_pipe_lines("git diff-tree -r --name-status %s \"%s^\" \"%s\"" % (diffOpts, id, id))
 498         filesToAdd = set()
 499         filesToDelete = set()
 500         editedFiles = set()
 501         for line in diff:
 502             modifier = line[0]
 503             path = line[1:].strip()
 504             if modifier == "M":
 505                 system("p4 edit \"%s\"" % path)
 506                 editedFiles.add(path)
 507             elif modifier == "A":
 508                 filesToAdd.add(path)
 509                 if path in filesToDelete:
 510                     filesToDelete.remove(path)
 511             elif modifier == "D":
 512                 filesToDelete.add(path)
 513                 if path in filesToAdd:
 514                     filesToAdd.remove(path)
 515             elif modifier == "R":
 516                 src, dest = line.strip().split("\t")[1:3]
 517                 system("p4 integrate -Dt \"%s\" \"%s\"" % (src, dest))
 518                 system("p4 edit \"%s\"" % (dest))
 519                 os.unlink(dest)
 520                 editedFiles.add(dest)
 521                 filesToDelete.add(src)
 522             else:
 523                 die("unknown modifier %s for %s" % (modifier, path))
 524
 525         if self.directSubmit:
 526             diffcmd = "cat \"%s\"" % self.diffFile
 527         else:
 528             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 529         patchcmd = diffcmd + " | git apply "
 530         tryPatchCmd = patchcmd + "--check -"
 531         applyPatchCmd = patchcmd + "--check --apply -"
 532
 533         if os.system(tryPatchCmd) != 0:
 534             print "Unfortunately applying the change failed!"
 535             print "What do you want to do?"
 536             response = "x"
 537             while response != "s" and response != "a" and response != "w":
 538                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 539                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 540             if response == "s":
 541                 print "Skipping! Good luck with the next patches..."
 542                 for f in editedFiles:
 543                     system("p4 revert \"%s\"" % f);
 544                 for f in filesToAdd:
 545                     system("rm %s" %f)
 546                 return
 547             elif response == "a":
 548                 os.system(applyPatchCmd)
 549                 if len(filesToAdd) > 0:
 550                     print "You may also want to call p4 add on the following files:"
 551                     print " ".join(filesToAdd)
 552                 if len(filesToDelete):
 553                     print "The following files should be scheduled for deletion with p4 delete:"
 554                     print " ".join(filesToDelete)
 555                 die("Please resolve and submit the conflict manually and "
 556                     + "continue afterwards with git-p4 submit --continue")
 557             elif response == "w":
 558                 system(diffcmd + " > patch.txt")
 559                 print "Patch saved to patch.txt in %s !" % self.clientPath
 560                 die("Please resolve and submit the conflict manually and "
 561                     "continue afterwards with git-p4 submit --continue")
 562
 563         system(applyPatchCmd)
 564
 565         for f in filesToAdd:
 566             system("p4 add \"%s\"" % f)
 567         for f in filesToDelete:
 568             system("p4 revert \"%s\"" % f)
 569             system("p4 delete \"%s\"" % f)
 570
 571         logMessage = ""
 572         if not self.directSubmit:
 573             logMessage = extractLogMessageFromGitCommit(id)
 574             logMessage = logMessage.replace("\n", "\n\t")
 575             if self.isWindows:
 576                 logMessage = logMessage.replace("\n", "\r\n")
 577             logMessage = logMessage.strip()
 578
 579         template = self.prepareSubmitTemplate()
 580
 581         if self.interactive:
 582             submitTemplate = self.prepareLogMessage(template, logMessage)
 583             diff = read_pipe("p4 diff -du ...")
 584
 585             for newFile in filesToAdd:
 586                 diff += "==== new file ====\n"
 587                 diff += "--- /dev/null\n"
 588                 diff += "+++ %s\n" % newFile
 589                 f = open(newFile, "r")
 590                 for line in f.readlines():
 591                     diff += "+" + line
 592                 f.close()
 593
 594             separatorLine = "######## everything below this line is just the diff #######"
 595             if platform.system() == "Windows":
 596                 separatorLine += "\r"
 597             separatorLine += "\n"
 598
 599             response = "e"
 600             if self.trustMeLikeAFool:
 601                 response = "y"
 602
 603             firstIteration = True
 604             while response == "e":
 605                 if not firstIteration:
 606                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 607                 firstIteration = False
 608                 if response == "e":
 609                     [handle, fileName] = tempfile.mkstemp()
 610                     tmpFile = os.fdopen(handle, "w+")
 611                     tmpFile.write(submitTemplate + separatorLine + diff)
 612                     tmpFile.close()
 613                     defaultEditor = "vi"
 614                     if platform.system() == "Windows":
 615                         defaultEditor = "notepad"
 616                     editor = os.environ.get("EDITOR", defaultEditor);
 617                     system(editor + " " + fileName)
 618                     tmpFile = open(fileName, "rb")
 619                     message = tmpFile.read()
 620                     tmpFile.close()
 621                     os.remove(fileName)
 622                     submitTemplate = message[:message.index(separatorLine)]
 623                     if self.isWindows:
 624                         submitTemplate = submitTemplate.replace("\r\n", "\n")
 625
 626             if response == "y" or response == "yes":
 627                if self.dryRun:
 628                    print submitTemplate
 629                    raw_input("Press return to continue...")
 630                else:
 631                    if self.directSubmit:
 632                        print "Submitting to git first"
 633                        os.chdir(self.oldWorkingDirectory)
 634                        write_pipe("git commit -a -F -", submitTemplate)
 635                        os.chdir(self.clientPath)
 636
 637                    write_pipe("p4 submit -i", submitTemplate)
 638             elif response == "s":
 639                 for f in editedFiles:
 640                     system("p4 revert \"%s\"" % f);
 641                 for f in filesToAdd:
 642                     system("p4 revert \"%s\"" % f);
 643                     system("rm %s" %f)
 644                 for f in filesToDelete:
 645                     system("p4 delete \"%s\"" % f);
 646                 return
 647             else:
 648                 print "Not submitting!"
 649                 self.interactive = False
 650         else:
 651             fileName = "submit.txt"
 652             file = open(fileName, "w+")
 653             file.write(self.prepareLogMessage(template, logMessage))
 654             file.close()
 655             print ("Perforce submit template written as %s. "
 656                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 657                    % (fileName, fileName))
 658
 659     def run(self, args):
 660         if len(args) == 0:
 661             self.master = currentGitBranch()
 662             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 663                 die("Detecting current git branch failed!")
 664         elif len(args) == 1:
 665             self.master = args[0]
 666         else:
 667             return False
 668
 669         [upstream, settings] = findUpstreamBranchPoint()
 670         self.depotPath = settings['depot-paths'][0]
 671         if len(self.origin) == 0:
 672             self.origin = upstream
 673
 674         if self.verbose:
 675             print "Origin branch is " + self.origin
 676
 677         if len(self.depotPath) == 0:
 678             print "Internal error: cannot locate perforce depot path from existing branches"
 679             sys.exit(128)
 680
 681         self.clientPath = p4Where(self.depotPath)
 682
 683         if len(self.clientPath) == 0:
 684             print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
 685             sys.exit(128)
 686
 687         print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
 688         self.oldWorkingDirectory = os.getcwd()
 689
 690         if self.directSubmit:
 691             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 692             if len(self.diffStatus) == 0:
 693                 print "No changes in working directory to submit."
 694                 return True
 695             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 696             self.diffFile = self.gitdir + "/p4-git-diff"
 697             f = open(self.diffFile, "wb")
 698             f.write(patch)
 699             f.close();
 700
 701         os.chdir(self.clientPath)
 702         print "Syncronizing p4 checkout..."
 703         system("p4 sync ...")
 704
 705         if self.reset:
 706             self.firstTime = True
 707
 708         if len(self.substFile) > 0:
 709             for line in open(self.substFile, "r").readlines():
 710                 tokens = line.strip().split("=")
 711                 self.logSubstitutions[tokens[0]] = tokens[1]
 712
 713         self.check()
 714         self.configFile = self.gitdir + "/p4-git-sync.cfg"
 715         self.config = shelve.open(self.configFile, writeback=True)
 716
 717         if self.firstTime:
 718             self.start()
 719
 720         commits = self.config.get("commits", [])
 721
 722         while len(commits) > 0:
 723             self.firstTime = False
 724             commit = commits[0]
 725             commits = commits[1:]
 726             self.config["commits"] = commits
 727             self.applyCommit(commit)
 728             if not self.interactive:
 729                 break
 730
 731         self.config.close()
 732
 733         if self.directSubmit:
 734             os.remove(self.diffFile)
 735
 736         if len(commits) == 0:
 737             if self.firstTime:
 738                 print "No changes found to apply between %s and current HEAD" % self.origin
 739             else:
 740                 print "All changes applied!"
 741                 os.chdir(self.oldWorkingDirectory)
 742
 743                 sync = P4Sync()
 744                 sync.run([])
 745
 746                 response = raw_input("Do you want to rebase current HEAD from Perforce now using git-p4 rebase? [y]es/[n]o ")
 747                 if response == "y" or response == "yes":
 748                     rebase = P4Rebase()
 749                     rebase.rebase()
 750             os.remove(self.configFile)
 751
 752         return True
 753
 754 class P4Sync(Command):
 755     def __init__(self):
 756         Command.__init__(self)
 757         self.options = [
 758                 optparse.make_option("--branch", dest="branch"),
 759                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 760                 optparse.make_option("--changesfile", dest="changesFile"),
 761                 optparse.make_option("--silent", dest="silent", action="store_true"),
 762                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 763                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 764                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 765                                      help="Import into refs/heads/ , not refs/remotes"),
 766                 optparse.make_option("--max-changes", dest="maxChanges"),
 767                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 768                                      help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 769         ]
 770         self.description = """Imports from Perforce into a git repository.\n
 771     example:
 772     //depot/my/project/ -- to import the current head
 773     //depot/my/project/@all -- to import everything
 774     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 775
 776     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 777
 778         self.usage += " //depot/path[@revRange]"
 779         self.silent = False
 780         self.createdBranches = Set()
 781         self.committedChanges = Set()
 782         self.branch = ""
 783         self.detectBranches = False
 784         self.detectLabels = False
 785         self.changesFile = ""
 786         self.syncWithOrigin = True
 787         self.verbose = False
 788         self.importIntoRemotes = True
 789         self.maxChanges = ""
 790         self.isWindows = (platform.system() == "Windows")
 791         self.keepRepoPath = False
 792         self.depotPaths = None
 793         self.p4BranchesInGit = []
 794
 795         if gitConfig("git-p4.syncFromOrigin") == "false":
 796             self.syncWithOrigin = False
 797
 798     def extractFilesFromCommit(self, commit):
 799         files = []
 800         fnum = 0
 801         while commit.has_key("depotFile%s" % fnum):
 802             path =  commit["depotFile%s" % fnum]
 803
 804             found = [p for p in self.depotPaths
 805                      if path.startswith (p)]
 806             if not found:
 807                 fnum = fnum + 1
 808                 continue
 809
 810             file = {}
 811             file["path"] = path
 812             file["rev"] = commit["rev%s" % fnum]
 813             file["action"] = commit["action%s" % fnum]
 814             file["type"] = commit["type%s" % fnum]
 815             files.append(file)
 816             fnum = fnum + 1
 817         return files
 818
 819     def stripRepoPath(self, path, prefixes):
 820         if self.keepRepoPath:
 821             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 822
 823         for p in prefixes:
 824             if path.startswith(p):
 825                 path = path[len(p):]
 826
 827         return path
 828
 829     def splitFilesIntoBranches(self, commit):
 830         branches = {}
 831         fnum = 0
 832         while commit.has_key("depotFile%s" % fnum):
 833             path =  commit["depotFile%s" % fnum]
 834             found = [p for p in self.depotPaths
 835                      if path.startswith (p)]
 836             if not found:
 837                 fnum = fnum + 1
 838                 continue
 839
 840             file = {}
 841             file["path"] = path
 842             file["rev"] = commit["rev%s" % fnum]
 843             file["action"] = commit["action%s" % fnum]
 844             file["type"] = commit["type%s" % fnum]
 845             fnum = fnum + 1
 846
 847             relPath = self.stripRepoPath(path, self.depotPaths)
 848
 849             for branch in self.knownBranches.keys():
 850
 851                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 852                 if relPath.startswith(branch + "/"):
 853                     if branch not in branches:
 854                         branches[branch] = []
 855                     branches[branch].append(file)
 856                     break
 857
 858         return branches
 859
 860     ## Should move this out, doesn't use SELF.
 861     def readP4Files(self, files):
 862         files = [f for f in files
 863                  if f['action'] != 'delete']
 864
 865         if not files:
 866             return
 867
 868         filedata = p4CmdList('-x - print',
 869                              stdin='\n'.join(['%s#%s' % (f['path'], f['rev'])
 870                                               for f in files]),
 871                              stdin_mode='w+')
 872         if "p4ExitCode" in filedata[0]:
 873             die("Problems executing p4. Error: [%d]."
 874                 % (filedata[0]['p4ExitCode']));
 875
 876         j = 0;
 877         contents = {}
 878         while j < len(filedata):
 879             stat = filedata[j]
 880             j += 1
 881             text = ''
 882             while j < len(filedata) and filedata[j]['code'] in ('text',
 883                                                                 'binary'):
 884                 text += filedata[j]['data']
 885                 j += 1
 886
 887
 888             if not stat.has_key('depotFile'):
 889                 sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 890                 continue
 891
 892             contents[stat['depotFile']] = text
 893
 894         for f in files:
 895             assert not f.has_key('data')
 896             f['data'] = contents[f['path']]
 897
 898     def commit(self, details, files, branch, branchPrefixes, parent = ""):
 899         epoch = details["time"]
 900         author = details["user"]
 901
 902         if self.verbose:
 903             print "commit into %s" % branch
 904
 905         # start with reading files; if that fails, we should not
 906         # create a commit.
 907         new_files = []
 908         for f in files:
 909             if [p for p in branchPrefixes if f['path'].startswith(p)]:
 910                 new_files.append (f)
 911             else:
 912                 sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 913         files = new_files
 914         self.readP4Files(files)
 915
 916
 917
 918
 919         self.gitStream.write("commit %s\n" % branch)
 920 #        gitStream.write("mark :%s\n" % details["change"])
 921         self.committedChanges.add(int(details["change"]))
 922         committer = ""
 923         if author not in self.users:
 924             self.getUserMapFromPerforceServer()
 925         if author in self.users:
 926             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 927         else:
 928             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 929
 930         self.gitStream.write("committer %s\n" % committer)
 931
 932         self.gitStream.write("data <<EOT\n")
 933         self.gitStream.write(details["desc"])
 934         self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
 935                              % (','.join (branchPrefixes), details["change"]))
 936         if len(details['options']) > 0:
 937             self.gitStream.write(": options = %s" % details['options'])
 938         self.gitStream.write("]\nEOT\n\n")
 939
 940         if len(parent) > 0:
 941             if self.verbose:
 942                 print "parent %s" % parent
 943             self.gitStream.write("from %s\n" % parent)
 944
 945         for file in files:
 946             if file["type"] == "apple":
 947                 print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
 948                 continue
 949
 950             relPath = self.stripRepoPath(file['path'], branchPrefixes)
 951             if file["action"] == "delete":
 952                 self.gitStream.write("D %s\n" % relPath)
 953             else:
 954                 data = file['data']
 955
 956                 mode = "644"
 957                 if isP4Exec(file["type"]):
 958                     mode = "755"
 959                 elif file["type"] == "symlink":
 960                     mode = "120000"
 961                     # p4 print on a symlink contains "target\n", so strip it off
 962                     data = data[:-1]
 963
 964                 if self.isWindows and file["type"].endswith("text"):
 965                     data = data.replace("\r\n", "\n")
 966
 967                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 968                 self.gitStream.write("data %s\n" % len(data))
 969                 self.gitStream.write(data)
 970                 self.gitStream.write("\n")
 971
 972         self.gitStream.write("\n")
 973
 974         change = int(details["change"])
 975
 976         if self.labels.has_key(change):
 977             label = self.labels[change]
 978             labelDetails = label[0]
 979             labelRevisions = label[1]
 980             if self.verbose:
 981                 print "Change %s is labelled %s" % (change, labelDetails)
 982
 983             files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
 984                                                     for p in branchPrefixes]))
 985
 986             if len(files) == len(labelRevisions):
 987
 988                 cleanedFiles = {}
 989                 for info in files:
 990                     if info["action"] == "delete":
 991                         continue
 992                     cleanedFiles[info["depotFile"]] = info["rev"]
 993
 994                 if cleanedFiles == labelRevisions:
 995                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 996                     self.gitStream.write("from %s\n" % branch)
 997
 998                     owner = labelDetails["Owner"]
 999                     tagger = ""
1000                     if author in self.users:
1001                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
1002                     else:
1003                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
1004                     self.gitStream.write("tagger %s\n" % tagger)
1005                     self.gitStream.write("data <<EOT\n")
1006                     self.gitStream.write(labelDetails["Description"])
1007                     self.gitStream.write("EOT\n\n")
1008
1009                 else:
1010                     if not self.silent:
1011                         print ("Tag %s does not match with change %s: files do not match."
1012                                % (labelDetails["label"], change))
1013
1014             else:
1015                 if not self.silent:
1016                     print ("Tag %s does not match with change %s: file count is different."
1017                            % (labelDetails["label"], change))
1018
1019     def getUserCacheFilename(self):
1020         home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
1021         return home + "/.gitp4-usercache.txt"
1022
1023     def getUserMapFromPerforceServer(self):
1024         if self.userMapFromPerforceServer:
1025             return
1026         self.users = {}
1027
1028         for output in p4CmdList("users"):
1029             if not output.has_key("User"):
1030                 continue
1031             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
1032
1033
1034         s = ''
1035         for (key, val) in self.users.items():
1036             s += "%s\t%s\n" % (key, val)
1037
1038         open(self.getUserCacheFilename(), "wb").write(s)
1039         self.userMapFromPerforceServer = True
1040
1041     def loadUserMapFromCache(self):
1042         self.users = {}
1043         self.userMapFromPerforceServer = False
1044         try:
1045             cache = open(self.getUserCacheFilename(), "rb")
1046             lines = cache.readlines()
1047             cache.close()
1048             for line in lines:
1049                 entry = line.strip().split("\t")
1050                 self.users[entry[0]] = entry[1]
1051         except IOError:
1052             self.getUserMapFromPerforceServer()
1053
1054     def getLabels(self):
1055         self.labels = {}
1056
1057         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
1058         if len(l) > 0 and not self.silent:
1059             print "Finding files belonging to labels in %s" % `self.depotPath`
1060
1061         for output in l:
1062             label = output["label"]
1063             revisions = {}
1064             newestChange = 0
1065             if self.verbose:
1066                 print "Querying files for label %s" % label
1067             for file in p4CmdList("files "
1068                                   +  ' '.join (["%s...@%s" % (p, label)
1069                                                 for p in self.depotPaths])):
1070                 revisions[file["depotFile"]] = file["rev"]
1071                 change = int(file["change"])
1072                 if change > newestChange:
1073                     newestChange = change
1074
1075             self.labels[newestChange] = [output, revisions]
1076
1077         if self.verbose:
1078             print "Label changes: %s" % self.labels.keys()
1079
1080     def guessProjectName(self):
1081         for p in self.depotPaths:
1082             if p.endswith("/"):
1083                 p = p[:-1]
1084             p = p[p.strip().rfind("/") + 1:]
1085             if not p.endswith("/"):
1086                p += "/"
1087             return p
1088
1089     def getBranchMapping(self):
1090         lostAndFoundBranches = set()
1091
1092         for info in p4CmdList("branches"):
1093             details = p4Cmd("branch -o %s" % info["branch"])
1094             viewIdx = 0
1095             while details.has_key("View%s" % viewIdx):
1096                 paths = details["View%s" % viewIdx].split(" ")
1097                 viewIdx = viewIdx + 1
1098                 # require standard //depot/foo/... //depot/bar/... mapping
1099                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1100                     continue
1101                 source = paths[0]
1102                 destination = paths[1]
1103                 ## HACK
1104                 if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
1105                     source = source[len(self.depotPaths[0]):-4]
1106                     destination = destination[len(self.depotPaths[0]):-4]
1107
1108                     if destination in self.knownBranches:
1109                         if not self.silent:
1110                             print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1111                             print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1112                         continue
1113
1114                     self.knownBranches[destination] = source
1115
1116                     lostAndFoundBranches.discard(destination)
1117
1118                     if source not in self.knownBranches:
1119                         lostAndFoundBranches.add(source)
1120
1121
1122         for branch in lostAndFoundBranches:
1123             self.knownBranches[branch] = branch
1124
1125     def listExistingP4GitBranches(self):
1126         # branches holds mapping from name to commit
1127         branches = p4BranchesInGit(self.importIntoRemotes)
1128         self.p4BranchesInGit = branches.keys()
1129         for branch in branches.keys():
1130             self.initialParents[self.refPrefix + branch] = branches[branch]
1131
1132     def updateOptionDict(self, d):
1133         option_keys = {}
1134         if self.keepRepoPath:
1135             option_keys['keepRepoPath'] = 1
1136
1137         d["options"] = ' '.join(sorted(option_keys.keys()))
1138
1139     def readOptions(self, d):
1140         self.keepRepoPath = (d.has_key('options')
1141                              and ('keepRepoPath' in d['options']))
1142
1143     def gitRefForBranch(self, branch):
1144         if branch == "main":
1145             return self.refPrefix + "master"
1146
1147         if len(branch) <= 0:
1148             return branch
1149
1150         return self.refPrefix + self.projectName + branch
1151
1152     def gitCommitByP4Change(self, ref, change):
1153         if self.verbose:
1154             print "looking in ref " + ref + " for change %s using bisect..." % change
1155
1156         earliestCommit = ""
1157         latestCommit = parseRevision(ref)
1158
1159         while True:
1160             if self.verbose:
1161                 print "trying: earliest %s latest %s" % (earliestCommit, latestCommit)
1162             next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip()
1163             if len(next) == 0:
1164                 if self.verbose:
1165                     print "argh"
1166                 return ""
1167             log = extractLogMessageFromGitCommit(next)
1168             settings = extractSettingsGitLog(log)
1169             currentChange = int(settings['change'])
1170             if self.verbose:
1171                 print "current change %s" % currentChange
1172
1173             if currentChange == change:
1174                 if self.verbose:
1175                     print "found %s" % next
1176                 return next
1177
1178             if currentChange < change:
1179                 earliestCommit = "^%s" % next
1180             else:
1181                 latestCommit = "%s" % next
1182
1183         return ""
1184
1185     def importNewBranch(self, branch, maxChange):
1186         # make fast-import flush all changes to disk and update the refs using the checkpoint
1187         # command so that we can try to find the branch parent in the git history
1188         self.gitStream.write("checkpoint\n\n");
1189         self.gitStream.flush();
1190         branchPrefix = self.depotPaths[0] + branch + "/"
1191         range = "@1,%s" % maxChange
1192         #print "prefix" + branchPrefix
1193         changes = p4ChangesForPaths([branchPrefix], range)
1194         if len(changes) <= 0:
1195             return False
1196         firstChange = changes[0]
1197         #print "first change in branch: %s" % firstChange
1198         sourceBranch = self.knownBranches[branch]
1199         sourceDepotPath = self.depotPaths[0] + sourceBranch
1200         sourceRef = self.gitRefForBranch(sourceBranch)
1201         #print "source " + sourceBranch
1202
1203         branchParentChange = int(p4Cmd("changes -m 1 %s...@1,%s" % (sourceDepotPath, firstChange))["change"])
1204         #print "branch parent: %s" % branchParentChange
1205         gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange)
1206         if len(gitParent) > 0:
1207             self.initialParents[self.gitRefForBranch(branch)] = gitParent
1208             #print "parent git commit: %s" % gitParent
1209
1210         self.importChanges(changes)
1211         return True
1212
1213     def importChanges(self, changes):
1214         cnt = 1
1215         for change in changes:
1216             description = p4Cmd("describe %s" % change)
1217             self.updateOptionDict(description)
1218
1219             if not self.silent:
1220                 sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1221                 sys.stdout.flush()
1222             cnt = cnt + 1
1223
1224             try:
1225                 if self.detectBranches:
1226                     branches = self.splitFilesIntoBranches(description)
1227                     for branch in branches.keys():
1228                         ## HACK  --hwn
1229                         branchPrefix = self.depotPaths[0] + branch + "/"
1230
1231                         parent = ""
1232
1233                         filesForCommit = branches[branch]
1234
1235                         if self.verbose:
1236                             print "branch is %s" % branch
1237
1238                         self.updatedBranches.add(branch)
1239
1240                         if branch not in self.createdBranches:
1241                             self.createdBranches.add(branch)
1242                             parent = self.knownBranches[branch]
1243                             if parent == branch:
1244                                 parent = ""
1245                             else:
1246                                 fullBranch = self.projectName + branch
1247                                 if fullBranch not in self.p4BranchesInGit:
1248                                     if not self.silent:
1249                                         print("\n    Importing new branch %s" % fullBranch);
1250                                     if self.importNewBranch(branch, change - 1):
1251                                         parent = ""
1252                                         self.p4BranchesInGit.append(fullBranch)
1253                                     if not self.silent:
1254                                         print("\n    Resuming with change %s" % change);
1255
1256                                 if self.verbose:
1257                                     print "parent determined through known branches: %s" % parent
1258
1259                         branch = self.gitRefForBranch(branch)
1260                         parent = self.gitRefForBranch(parent)
1261
1262                         if self.verbose:
1263                             print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1264
1265                         if len(parent) == 0 and branch in self.initialParents:
1266                             parent = self.initialParents[branch]
1267                             del self.initialParents[branch]
1268
1269                         self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1270                 else:
1271                     files = self.extractFilesFromCommit(description)
1272                     self.commit(description, files, self.branch, self.depotPaths,
1273                                 self.initialParent)
1274                     self.initialParent = ""
1275             except IOError:
1276                 print self.gitError.read()
1277                 sys.exit(1)
1278
1279     def importHeadRevision(self, revision):
1280         print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
1281
1282         details = { "user" : "git perforce import user", "time" : int(time.time()) }
1283         details["desc"] = ("Initial import of %s from the state at revision %s"
1284                            % (' '.join(self.depotPaths), revision))
1285         details["change"] = revision
1286         newestRevision = 0
1287
1288         fileCnt = 0
1289         for info in p4CmdList("files "
1290                               +  ' '.join(["%s...%s"
1291                                            % (p, revision)
1292                                            for p in self.depotPaths])):
1293
1294             if info['code'] == 'error':
1295                 sys.stderr.write("p4 returned an error: %s\n"
1296                                  % info['data'])
1297                 sys.exit(1)
1298
1299
1300             change = int(info["change"])
1301             if change > newestRevision:
1302                 newestRevision = change
1303
1304             if info["action"] == "delete":
1305                 # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1306                 #fileCnt = fileCnt + 1
1307                 continue
1308
1309             for prop in ["depotFile", "rev", "action", "type" ]:
1310                 details["%s%s" % (prop, fileCnt)] = info[prop]
1311
1312             fileCnt = fileCnt + 1
1313
1314         details["change"] = newestRevision
1315         self.updateOptionDict(details)
1316         try:
1317             self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1318         except IOError:
1319             print "IO error with git fast-import. Is your git version recent enough?"
1320             print self.gitError.read()
1321
1322
1323     def run(self, args):
1324         self.depotPaths = []
1325         self.changeRange = ""
1326         self.initialParent = ""
1327         self.previousDepotPaths = []
1328
1329         # map from branch depot path to parent branch
1330         self.knownBranches = {}
1331         self.initialParents = {}
1332         self.hasOrigin = originP4BranchesExist()
1333         if not self.syncWithOrigin:
1334             self.hasOrigin = False
1335
1336         if self.importIntoRemotes:
1337             self.refPrefix = "refs/remotes/p4/"
1338         else:
1339             self.refPrefix = "refs/heads/p4/"
1340
1341         if self.syncWithOrigin and self.hasOrigin:
1342             if not self.silent:
1343                 print "Syncing with origin first by calling git fetch origin"
1344             system("git fetch origin")
1345
1346         if len(self.branch) == 0:
1347             self.branch = self.refPrefix + "master"
1348             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1349                 system("git update-ref %s refs/heads/p4" % self.branch)
1350                 system("git branch -D p4");
1351             # create it /after/ importing, when master exists
1352             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
1353                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1354
1355         # TODO: should always look at previous commits,
1356         # merge with previous imports, if possible.
1357         if args == []:
1358             if self.hasOrigin:
1359                 createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
1360             self.listExistingP4GitBranches()
1361
1362             if len(self.p4BranchesInGit) > 1:
1363                 if not self.silent:
1364                     print "Importing from/into multiple branches"
1365                 self.detectBranches = True
1366
1367             if self.verbose:
1368                 print "branches: %s" % self.p4BranchesInGit
1369
1370             p4Change = 0
1371             for branch in self.p4BranchesInGit:
1372                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1373
1374                 settings = extractSettingsGitLog(logMsg)
1375
1376                 self.readOptions(settings)
1377                 if (settings.has_key('depot-paths')
1378                     and settings.has_key ('change')):
1379                     change = int(settings['change']) + 1
1380                     p4Change = max(p4Change, change)
1381
1382                     depotPaths = sorted(settings['depot-paths'])
1383                     if self.previousDepotPaths == []:
1384                         self.previousDepotPaths = depotPaths
1385                     else:
1386                         paths = []
1387                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1388                             for i in range(0, min(len(cur), len(prev))):
1389                                 if cur[i] <> prev[i]:
1390                                     i = i - 1
1391                                     break
1392
1393                             paths.append (cur[:i + 1])
1394
1395                         self.previousDepotPaths = paths
1396
1397             if p4Change > 0:
1398                 self.depotPaths = sorted(self.previousDepotPaths)
1399                 self.changeRange = "@%s,#head" % p4Change
1400                 if not self.detectBranches:
1401                     self.initialParent = parseRevision(self.branch)
1402                 if not self.silent and not self.detectBranches:
1403                     print "Performing incremental import into %s git branch" % self.branch
1404
1405         if not self.branch.startswith("refs/"):
1406             self.branch = "refs/heads/" + self.branch
1407
1408         if len(args) == 0 and self.depotPaths:
1409             if not self.silent:
1410                 print "Depot paths: %s" % ' '.join(self.depotPaths)
1411         else:
1412             if self.depotPaths and self.depotPaths != args:
1413                 print ("previous import used depot path %s and now %s was specified. "
1414                        "This doesn't work!" % (' '.join (self.depotPaths),
1415                                                ' '.join (args)))
1416                 sys.exit(1)
1417
1418             self.depotPaths = sorted(args)
1419
1420         revision = ""
1421         self.users = {}
1422
1423         newPaths = []
1424         for p in self.depotPaths:
1425             if p.find("@") != -1:
1426                 atIdx = p.index("@")
1427                 self.changeRange = p[atIdx:]
1428                 if self.changeRange == "@all":
1429                     self.changeRange = ""
1430                 elif ',' not in self.changeRange:
1431                     revision = self.changeRange
1432                     self.changeRange = ""
1433                 p = p[:atIdx]
1434             elif p.find("#") != -1:
1435                 hashIdx = p.index("#")
1436                 revision = p[hashIdx:]
1437                 p = p[:hashIdx]
1438             elif self.previousDepotPaths == []:
1439                 revision = "#head"
1440
1441             p = re.sub ("\.\.\.$", "", p)
1442             if not p.endswith("/"):
1443                 p += "/"
1444
1445             newPaths.append(p)
1446
1447         self.depotPaths = newPaths
1448
1449
1450         self.loadUserMapFromCache()
1451         self.labels = {}
1452         if self.detectLabels:
1453             self.getLabels();
1454
1455         if self.detectBranches:
1456             ## FIXME - what's a P4 projectName ?
1457             self.projectName = self.guessProjectName()
1458
1459             if not self.hasOrigin:
1460                 self.getBranchMapping();
1461             if self.verbose:
1462                 print "p4-git branches: %s" % self.p4BranchesInGit
1463                 print "initial parents: %s" % self.initialParents
1464             for b in self.p4BranchesInGit:
1465                 if b != "master":
1466
1467                     ## FIXME
1468                     b = b[len(self.projectName):]
1469                 self.createdBranches.add(b)
1470
1471         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1472
1473         importProcess = subprocess.Popen(["git", "fast-import"],
1474                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1475                                          stderr=subprocess.PIPE);
1476         self.gitOutput = importProcess.stdout
1477         self.gitStream = importProcess.stdin
1478         self.gitError = importProcess.stderr
1479
1480         if revision:
1481             self.importHeadRevision(revision)
1482         else:
1483             changes = []
1484
1485             if len(self.changesFile) > 0:
1486                 output = open(self.changesFile).readlines()
1487                 changeSet = Set()
1488                 for line in output:
1489                     changeSet.add(int(line))
1490
1491                 for change in changeSet:
1492                     changes.append(change)
1493
1494                 changes.sort()
1495             else:
1496                 if self.verbose:
1497                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1498                                                               self.changeRange)
1499                 changes = p4ChangesForPaths(self.depotPaths, self.changeRange)
1500
1501                 if len(self.maxChanges) > 0:
1502                     changes = changes[:min(int(self.maxChanges), len(changes))]
1503
1504             if len(changes) == 0:
1505                 if not self.silent:
1506                     print "No changes to import!"
1507                 return True
1508
1509             if not self.silent and not self.detectBranches:
1510                 print "Import destination: %s" % self.branch
1511
1512             self.updatedBranches = set()
1513
1514             self.importChanges(changes)
1515
1516             if not self.silent:
1517                 print ""
1518                 if len(self.updatedBranches) > 0:
1519                     sys.stdout.write("Updated branches: ")
1520                     for b in self.updatedBranches:
1521                         sys.stdout.write("%s " % b)
1522                     sys.stdout.write("\n")
1523
1524         self.gitStream.close()
1525         if importProcess.wait() != 0:
1526             die("fast-import failed: %s" % self.gitError.read())
1527         self.gitOutput.close()
1528         self.gitError.close()
1529
1530         return True
1531
1532 class P4Rebase(Command):
1533     def __init__(self):
1534         Command.__init__(self)
1535         self.options = [ ]
1536         self.description = ("Fetches the latest revision from perforce and "
1537                             + "rebases the current work (branch) against it")
1538         self.verbose = False
1539
1540     def run(self, args):
1541         sync = P4Sync()
1542         sync.run([])
1543
1544         return self.rebase()
1545
1546     def rebase(self):
1547         [upstream, settings] = findUpstreamBranchPoint()
1548         if len(upstream) == 0:
1549             die("Cannot find upstream branchpoint for rebase")
1550
1551         # the branchpoint may be p4/foo~3, so strip off the parent
1552         upstream = re.sub("~[0-9]+$", "", upstream)
1553
1554         print "Rebasing the current branch onto %s" % upstream
1555         oldHead = read_pipe("git rev-parse HEAD").strip()
1556         system("git rebase %s" % upstream)
1557         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1558         return True
1559
1560 class P4Clone(P4Sync):
1561     def __init__(self):
1562         P4Sync.__init__(self)
1563         self.description = "Creates a new git repository and imports from Perforce into it"
1564         self.usage = "usage: %prog [options] //depot/path[@revRange]"
1565         self.options.append(
1566             optparse.make_option("--destination", dest="cloneDestination",
1567                                  action='store', default=None,
1568                                  help="where to leave result of the clone"))
1569         self.cloneDestination = None
1570         self.needsGit = False
1571
1572     def defaultDestination(self, args):
1573         ## TODO: use common prefix of args?
1574         depotPath = args[0]
1575         depotDir = re.sub("(@[^@]*)$", "", depotPath)
1576         depotDir = re.sub("(#[^#]*)$", "", depotDir)
1577         depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1578         depotDir = re.sub(r"/$", "", depotDir)
1579         return os.path.split(depotDir)[1]
1580
1581     def run(self, args):
1582         if len(args) < 1:
1583             return False
1584
1585         if self.keepRepoPath and not self.cloneDestination:
1586             sys.stderr.write("Must specify destination for --keep-path\n")
1587             sys.exit(1)
1588
1589         depotPaths = args
1590
1591         if not self.cloneDestination and len(depotPaths) > 1:
1592             self.cloneDestination = depotPaths[-1]
1593             depotPaths = depotPaths[:-1]
1594
1595         for p in depotPaths:
1596             if not p.startswith("//"):
1597                 return False
1598
1599         if not self.cloneDestination:
1600             self.cloneDestination = self.defaultDestination(args)
1601
1602         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1603         if not os.path.exists(self.cloneDestination):
1604             os.makedirs(self.cloneDestination)
1605         os.chdir(self.cloneDestination)
1606         system("git init")
1607         self.gitdir = os.getcwd() + "/.git"
1608         if not P4Sync.run(self, depotPaths):
1609             return False
1610         if self.branch != "master":
1611             if gitBranchExists("refs/remotes/p4/master"):
1612                 system("git branch master refs/remotes/p4/master")
1613                 system("git checkout -f")
1614             else:
1615                 print "Could not detect main branch. No checkout/master branch created."
1616
1617         return True
1618
1619 class P4Branches(Command):
1620     def __init__(self):
1621         Command.__init__(self)
1622         self.options = [ ]
1623         self.description = ("Shows the git branches that hold imports and their "
1624                             + "corresponding perforce depot paths")
1625         self.verbose = False
1626
1627     def run(self, args):
1628         if originP4BranchesExist():
1629             createOrUpdateBranchesFromOrigin()
1630
1631         cmdline = "git rev-parse --symbolic "
1632         cmdline += " --remotes"
1633
1634         for line in read_pipe_lines(cmdline):
1635             line = line.strip()
1636
1637             if not line.startswith('p4/') or line == "p4/HEAD":
1638                 continue
1639             branch = line
1640
1641             log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1642             settings = extractSettingsGitLog(log)
1643
1644             print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1645         return True
1646
1647 class HelpFormatter(optparse.IndentedHelpFormatter):
1648     def __init__(self):
1649         optparse.IndentedHelpFormatter.__init__(self)
1650
1651     def format_description(self, description):
1652         if description:
1653             return description + "\n"
1654         else:
1655             return ""
1656
1657 def printUsage(commands):
1658     print "usage: %s <command> [options]" % sys.argv[0]
1659     print ""
1660     print "valid commands: %s" % ", ".join(commands)
1661     print ""
1662     print "Try %s <command> --help for command specific help." % sys.argv[0]
1663     print ""
1664
1665 commands = {
1666     "debug" : P4Debug,
1667     "submit" : P4Submit,
1668     "commit" : P4Submit,
1669     "sync" : P4Sync,
1670     "rebase" : P4Rebase,
1671     "clone" : P4Clone,
1672     "rollback" : P4RollBack,
1673     "branches" : P4Branches
1674 }
1675
1676
1677 def main():
1678     if len(sys.argv[1:]) == 0:
1679         printUsage(commands.keys())
1680         sys.exit(2)
1681
1682     cmd = ""
1683     cmdName = sys.argv[1]
1684     try:
1685         klass = commands[cmdName]
1686         cmd = klass()
1687     except KeyError:
1688         print "unknown command %s" % cmdName
1689         print ""
1690         printUsage(commands.keys())
1691         sys.exit(2)
1692
1693     options = cmd.options
1694     cmd.gitdir = os.environ.get("GIT_DIR", None)
1695
1696     args = sys.argv[2:]
1697
1698     if len(options) > 0:
1699         options.append(optparse.make_option("--git-dir", dest="gitdir"))
1700
1701         parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1702                                        options,
1703                                        description = cmd.description,
1704                                        formatter = HelpFormatter())
1705
1706         (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1707     global verbose
1708     verbose = cmd.verbose
1709     if cmd.needsGit:
1710         if cmd.gitdir == None:
1711             cmd.gitdir = os.path.abspath(".git")
1712             if not isValidGitDir(cmd.gitdir):
1713                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1714                 if os.path.exists(cmd.gitdir):
1715                     cdup = read_pipe("git rev-parse --show-cdup").strip()
1716                     if len(cdup) > 0:
1717                         os.chdir(cdup);
1718
1719         if not isValidGitDir(cmd.gitdir):
1720             if isValidGitDir(cmd.gitdir + "/.git"):
1721                 cmd.gitdir += "/.git"
1722             else:
1723                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1724
1725         os.environ["GIT_DIR"] = cmd.gitdir
1726
1727     if not cmd.run(args):
1728         parser.print_help()
1729
1730
1731 if __name__ == '__main__':
1732     main()