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