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