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 gitdir = os.environ.get("GIT_DIR", "")
  18 verbose = False
  19
  20 def write_pipe(c, str):
  21     if verbose:
  22         sys.stderr.write('writing pipe: %s\n' % c)
  23
  24     pipe = os.popen(c, 'w')
  25     val = pipe.write(str)
  26     if pipe.close():
  27         sys.stderr.write('Command %s failed\n' % c)
  28         sys.exit(1)
  29
  30     return val
  31
  32 def read_pipe(c, ignore_error=False):
  33     if verbose:
  34         sys.stderr.write('reading pipe: %s\n' % c)
  35
  36     pipe = os.popen(c, 'rb')
  37     val = pipe.read()
  38     if pipe.close() and not ignore_error:
  39         sys.stderr.write('Command %s failed\n' % c)
  40         sys.exit(1)
  41
  42     return val
  43
  44
  45 def read_pipe_lines(c):
  46     if verbose:
  47         sys.stderr.write('reading pipe: %s\n' % c)
  48     ## todo: check return status
  49     pipe = os.popen(c, 'rb')
  50     val = pipe.readlines()
  51     if pipe.close():
  52         sys.stderr.write('Command %s failed\n' % c)
  53         sys.exit(1)
  54
  55     return val
  56
  57 def system(cmd):
  58     if verbose:
  59         sys.stderr.write("executing %s" % cmd)
  60     if os.system(cmd) != 0:
  61         die("command failed: %s" % cmd)
  62
  63 def p4CmdList(cmd):
  64     cmd = "p4 -G %s" % cmd
  65     pipe = os.popen(cmd, "rb")
  66
  67     result = []
  68     try:
  69         while True:
  70             entry = marshal.load(pipe)
  71             result.append(entry)
  72     except EOFError:
  73         pass
  74     exitCode = pipe.close()
  75     if exitCode != None:
  76         entry = {}
  77         entry["p4ExitCode"] = exitCode
  78         result.append(entry)
  79
  80     return result
  81
  82 def p4Cmd(cmd):
  83     list = p4CmdList(cmd)
  84     result = {}
  85     for entry in list:
  86         result.update(entry)
  87     return result;
  88
  89 def p4Where(depotPath):
  90     if not depotPath.endswith("/"):
  91         depotPath += "/"
  92     output = p4Cmd("where %s..." % depotPath)
  93     if output["code"] == "error":
  94         return ""
  95     clientPath = ""
  96     if "path" in output:
  97         clientPath = output.get("path")
  98     elif "data" in output:
  99         data = output.get("data")
 100         lastSpace = data.rfind(" ")
 101         clientPath = data[lastSpace + 1:]
 102
 103     if clientPath.endswith("..."):
 104         clientPath = clientPath[:-3]
 105     return clientPath
 106
 107 def die(msg):
 108     sys.stderr.write(msg + "\n")
 109     sys.exit(1)
 110
 111 def currentGitBranch():
 112     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 113
 114 def isValidGitDir(path):
 115     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
 116         return True;
 117     return False
 118
 119 def parseRevision(ref):
 120     return read_pipe("git rev-parse %s" % ref).strip()
 121
 122 def extractLogMessageFromGitCommit(commit):
 123     logMessage = ""
 124
 125     ## fixme: title is first line of commit, not 1st paragraph.
 126     foundTitle = False
 127     for log in read_pipe_lines("git cat-file commit %s" % commit):
 128        if not foundTitle:
 129            if len(log) == 1:
 130                foundTitle = True
 131            continue
 132
 133        logMessage += log
 134     return logMessage
 135
 136 def extractDepotPathAndChangeFromGitLog(log):
 137     values = {}
 138     for line in log.split("\n"):
 139         line = line.strip()
 140         if line.startswith("[git-p4:") and line.endswith("]"):
 141             line = line[8:-1].strip()
 142             for assignment in line.split(":"):
 143                 variable = assignment.strip()
 144                 value = ""
 145                 equalPos = assignment.find("=")
 146                 if equalPos != -1:
 147                     variable = assignment[:equalPos].strip()
 148                     value = assignment[equalPos + 1:].strip()
 149                     if value.startswith("\"") and value.endswith("\""):
 150                         value = value[1:-1]
 151                 values[variable] = value
 152
 153     return values.get("depot-path"), values.get("change")
 154
 155 def gitBranchExists(branch):
 156     proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 157     return proc.wait() == 0;
 158
 159 def gitConfig(key):
 160     return read_pipe("git config %s" % key, ignore_error=True).strip()
 161
 162 class Command:
 163     def __init__(self):
 164         self.usage = "usage: %prog [options]"
 165         self.needsGit = True
 166
 167 class P4Debug(Command):
 168     def __init__(self):
 169         Command.__init__(self)
 170         self.options = [
 171             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 172             ]
 173         self.description = "A tool to debug the output of p4 -G."
 174         self.needsGit = False
 175
 176     def run(self, args):
 177         for output in p4CmdList(" ".join(args)):
 178             print output
 179         return True
 180
 181 class P4RollBack(Command):
 182     def __init__(self):
 183         Command.__init__(self)
 184         self.options = [
 185             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 186             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 187         ]
 188         self.description = "A tool to debug the multi-branch import. Don't use :)"
 189         self.verbose = False
 190         self.rollbackLocalBranches = False
 191
 192     def run(self, args):
 193         if len(args) != 1:
 194             return False
 195         maxChange = int(args[0])
 196
 197         if "p4ExitCode" in p4Cmd("changes -m 1"):
 198             die("Problems executing p4");
 199
 200         if self.rollbackLocalBranches:
 201             refPrefix = "refs/heads/"
 202             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 203         else:
 204             refPrefix = "refs/remotes/"
 205             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 206
 207         for line in lines:
 208             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 209                 line = line.strip()
 210                 ref = refPrefix + line
 211                 log = extractLogMessageFromGitCommit(ref)
 212                 depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 213                 changed = False
 214
 215                 if len(p4Cmd("changes -m 1 %s...@%s" % (depotPath, maxChange))) == 0:
 216                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 217                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 218                     continue
 219
 220                 while len(change) > 0 and int(change) > maxChange:
 221                     changed = True
 222                     if self.verbose:
 223                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 224                     system("git update-ref %s \"%s^\"" % (ref, ref))
 225                     log = extractLogMessageFromGitCommit(ref)
 226                     depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 227
 228                 if changed:
 229                     print "%s rewound to %s" % (ref, change)
 230
 231         return True
 232
 233 class P4Submit(Command):
 234     def __init__(self):
 235         Command.__init__(self)
 236         self.options = [
 237                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 238                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 239                 optparse.make_option("--origin", dest="origin"),
 240                 optparse.make_option("--reset", action="store_true", dest="reset"),
 241                 optparse.make_option("--log-substitutions", dest="substFile"),
 242                 optparse.make_option("--dry-run", action="store_true"),
 243                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 244                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 245         ]
 246         self.description = "Submit changes from git to the perforce depot."
 247         self.usage += " [name of git branch to submit into perforce depot]"
 248         self.firstTime = True
 249         self.reset = False
 250         self.interactive = True
 251         self.dryRun = False
 252         self.substFile = ""
 253         self.firstTime = True
 254         self.origin = ""
 255         self.directSubmit = False
 256         self.trustMeLikeAFool = False
 257
 258         self.logSubstitutions = {}
 259         self.logSubstitutions["<enter description here>"] = "%log%"
 260         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 261
 262     def check(self):
 263         if len(p4CmdList("opened ...")) > 0:
 264             die("You have files opened with perforce! Close them before starting the sync.")
 265
 266     def start(self):
 267         if len(self.config) > 0 and not self.reset:
 268             die("Cannot start sync. Previous sync config found at %s\n"
 269                 "If you want to start submitting again from scratch "
 270                 "maybe you want to call git-p4 submit --reset" % self.configFile)
 271
 272         commits = []
 273         if self.directSubmit:
 274             commits.append("0")
 275         else:
 276             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 277                 commits.append(line.strip())
 278             commits.reverse()
 279
 280         self.config["commits"] = commits
 281
 282     def prepareLogMessage(self, template, message):
 283         result = ""
 284
 285         for line in template.split("\n"):
 286             if line.startswith("#"):
 287                 result += line + "\n"
 288                 continue
 289
 290             substituted = False
 291             for key in self.logSubstitutions.keys():
 292                 if line.find(key) != -1:
 293                     value = self.logSubstitutions[key]
 294                     value = value.replace("%log%", message)
 295                     if value != "@remove@":
 296                         result += line.replace(key, value) + "\n"
 297                     substituted = True
 298                     break
 299
 300             if not substituted:
 301                 result += line + "\n"
 302
 303         return result
 304
 305     def applyCommit(self, id):
 306         if self.directSubmit:
 307             print "Applying local change in working directory/index"
 308             diff = self.diffStatus
 309         else:
 310             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 311             diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 312         filesToAdd = set()
 313         filesToDelete = set()
 314         editedFiles = set()
 315         for line in diff:
 316             modifier = line[0]
 317             path = line[1:].strip()
 318             if modifier == "M":
 319                 system("p4 edit \"%s\"" % path)
 320                 editedFiles.add(path)
 321             elif modifier == "A":
 322                 filesToAdd.add(path)
 323                 if path in filesToDelete:
 324                     filesToDelete.remove(path)
 325             elif modifier == "D":
 326                 filesToDelete.add(path)
 327                 if path in filesToAdd:
 328                     filesToAdd.remove(path)
 329             else:
 330                 die("unknown modifier %s for %s" % (modifier, path))
 331
 332         if self.directSubmit:
 333             diffcmd = "cat \"%s\"" % self.diffFile
 334         else:
 335             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 336         patchcmd = diffcmd + " | git apply "
 337         tryPatchCmd = patchcmd + "--check -"
 338         applyPatchCmd = patchcmd + "--check --apply -"
 339
 340         if os.system(tryPatchCmd) != 0:
 341             print "Unfortunately applying the change failed!"
 342             print "What do you want to do?"
 343             response = "x"
 344             while response != "s" and response != "a" and response != "w":
 345                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 346                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 347             if response == "s":
 348                 print "Skipping! Good luck with the next patches..."
 349                 return
 350             elif response == "a":
 351                 os.system(applyPatchCmd)
 352                 if len(filesToAdd) > 0:
 353                     print "You may also want to call p4 add on the following files:"
 354                     print " ".join(filesToAdd)
 355                 if len(filesToDelete):
 356                     print "The following files should be scheduled for deletion with p4 delete:"
 357                     print " ".join(filesToDelete)
 358                 die("Please resolve and submit the conflict manually and "
 359                     + "continue afterwards with git-p4 submit --continue")
 360             elif response == "w":
 361                 system(diffcmd + " > patch.txt")
 362                 print "Patch saved to patch.txt in %s !" % self.clientPath
 363                 die("Please resolve and submit the conflict manually and "
 364                     "continue afterwards with git-p4 submit --continue")
 365
 366         system(applyPatchCmd)
 367
 368         for f in filesToAdd:
 369             system("p4 add %s" % f)
 370         for f in filesToDelete:
 371             system("p4 revert %s" % f)
 372             system("p4 delete %s" % f)
 373
 374         logMessage = ""
 375         if not self.directSubmit:
 376             logMessage = extractLogMessageFromGitCommit(id)
 377             logMessage = logMessage.replace("\n", "\n\t")
 378             logMessage = logMessage.strip()
 379
 380         template = read_pipe("p4 change -o")
 381
 382         if self.interactive:
 383             submitTemplate = self.prepareLogMessage(template, logMessage)
 384             diff = read_pipe("p4 diff -du ...")
 385
 386             for newFile in filesToAdd:
 387                 diff += "==== new file ====\n"
 388                 diff += "--- /dev/null\n"
 389                 diff += "+++ %s\n" % newFile
 390                 f = open(newFile, "r")
 391                 for line in f.readlines():
 392                     diff += "+" + line
 393                 f.close()
 394
 395             separatorLine = "######## everything below this line is just the diff #######"
 396             if platform.system() == "Windows":
 397                 separatorLine += "\r"
 398             separatorLine += "\n"
 399
 400             response = "e"
 401             if self.trustMeLikeAFool:
 402                 response = "y"
 403
 404             firstIteration = True
 405             while response == "e":
 406                 if not firstIteration:
 407                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 408                 firstIteration = False
 409                 if response == "e":
 410                     [handle, fileName] = tempfile.mkstemp()
 411                     tmpFile = os.fdopen(handle, "w+")
 412                     tmpFile.write(submitTemplate + separatorLine + diff)
 413                     tmpFile.close()
 414                     defaultEditor = "vi"
 415                     if platform.system() == "Windows":
 416                         defaultEditor = "notepad"
 417                     editor = os.environ.get("EDITOR", defaultEditor);
 418                     system(editor + " " + fileName)
 419                     tmpFile = open(fileName, "rb")
 420                     message = tmpFile.read()
 421                     tmpFile.close()
 422                     os.remove(fileName)
 423                     submitTemplate = message[:message.index(separatorLine)]
 424
 425             if response == "y" or response == "yes":
 426                if self.dryRun:
 427                    print submitTemplate
 428                    raw_input("Press return to continue...")
 429                else:
 430                    if self.directSubmit:
 431                        print "Submitting to git first"
 432                        os.chdir(self.oldWorkingDirectory)
 433                        write_pipe("git commit -a -F -", submitTemplate)
 434                        os.chdir(self.clientPath)
 435
 436                    write_pipe("p4 submit -i", submitTemplate)
 437             elif response == "s":
 438                 for f in editedFiles:
 439                     system("p4 revert \"%s\"" % f);
 440                 for f in filesToAdd:
 441                     system("p4 revert \"%s\"" % f);
 442                     system("rm %s" %f)
 443                 for f in filesToDelete:
 444                     system("p4 delete \"%s\"" % f);
 445                 return
 446             else:
 447                 print "Not submitting!"
 448                 self.interactive = False
 449         else:
 450             fileName = "submit.txt"
 451             file = open(fileName, "w+")
 452             file.write(self.prepareLogMessage(template, logMessage))
 453             file.close()
 454             print ("Perforce submit template written as %s. "
 455                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 456                    % (fileName, fileName))
 457
 458     def run(self, args):
 459         global gitdir
 460         # make gitdir absolute so we can cd out into the perforce checkout
 461         gitdir = os.path.abspath(gitdir)
 462         os.environ["GIT_DIR"] = gitdir
 463
 464         if len(args) == 0:
 465             self.master = currentGitBranch()
 466             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 467                 die("Detecting current git branch failed!")
 468         elif len(args) == 1:
 469             self.master = args[0]
 470         else:
 471             return False
 472
 473         depotPath = ""
 474         if gitBranchExists("p4"):
 475             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 476         if len(depotPath) == 0 and gitBranchExists("origin"):
 477             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 478
 479         if len(depotPath) == 0:
 480             print "Internal error: cannot locate perforce depot path from existing branches"
 481             sys.exit(128)
 482
 483         self.clientPath = p4Where(depotPath)
 484
 485         if len(self.clientPath) == 0:
 486             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 487             sys.exit(128)
 488
 489         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 490         self.oldWorkingDirectory = os.getcwd()
 491
 492         if self.directSubmit:
 493             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 494             if len(self.diffStatus) == 0:
 495                 print "No changes in working directory to submit."
 496                 return True
 497             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 498             self.diffFile = gitdir + "/p4-git-diff"
 499             f = open(self.diffFile, "wb")
 500             f.write(patch)
 501             f.close();
 502
 503         os.chdir(self.clientPath)
 504         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 505         if response == "y" or response == "yes":
 506             system("p4 sync ...")
 507
 508         if len(self.origin) == 0:
 509             if gitBranchExists("p4"):
 510                 self.origin = "p4"
 511             else:
 512                 self.origin = "origin"
 513
 514         if self.reset:
 515             self.firstTime = True
 516
 517         if len(self.substFile) > 0:
 518             for line in open(self.substFile, "r").readlines():
 519                 tokens = line.strip().split("=")
 520                 self.logSubstitutions[tokens[0]] = tokens[1]
 521
 522         self.check()
 523         self.configFile = gitdir + "/p4-git-sync.cfg"
 524         self.config = shelve.open(self.configFile, writeback=True)
 525
 526         if self.firstTime:
 527             self.start()
 528
 529         commits = self.config.get("commits", [])
 530
 531         while len(commits) > 0:
 532             self.firstTime = False
 533             commit = commits[0]
 534             commits = commits[1:]
 535             self.config["commits"] = commits
 536             self.applyCommit(commit)
 537             if not self.interactive:
 538                 break
 539
 540         self.config.close()
 541
 542         if self.directSubmit:
 543             os.remove(self.diffFile)
 544
 545         if len(commits) == 0:
 546             if self.firstTime:
 547                 print "No changes found to apply between %s and current HEAD" % self.origin
 548             else:
 549                 print "All changes applied!"
 550                 os.chdir(self.oldWorkingDirectory)
 551                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 552                 if response == "y" or response == "yes":
 553                     rebase = P4Rebase()
 554                     rebase.run([])
 555             os.remove(self.configFile)
 556
 557         return True
 558
 559 class P4Sync(Command):
 560     def __init__(self):
 561         Command.__init__(self)
 562         self.options = [
 563                 optparse.make_option("--branch", dest="branch"),
 564                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 565                 optparse.make_option("--changesfile", dest="changesFile"),
 566                 optparse.make_option("--silent", dest="silent", action="store_true"),
 567                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 568                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 569                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false"),
 570                 optparse.make_option("--max-changes", dest="maxChanges"),
 571                 optparse.make_option("--keep-path", dest="keepRepoPath")
 572         ]
 573         self.description = """Imports from Perforce into a git repository.\n
 574     example:
 575     //depot/my/project/ -- to import the current head
 576     //depot/my/project/@all -- to import everything
 577     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 578
 579     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 580
 581         self.usage += " //depot/path[@revRange]"
 582         self.silent = False
 583         self.createdBranches = Set()
 584         self.committedChanges = Set()
 585         self.branch = ""
 586         self.detectBranches = False
 587         self.detectLabels = False
 588         self.changesFile = ""
 589         self.syncWithOrigin = True
 590         self.verbose = False
 591         self.importIntoRemotes = True
 592         self.maxChanges = ""
 593         self.isWindows = (platform.system() == "Windows")
 594         self.depotPath = None
 595         self.keepRepoPath = False
 596
 597         if gitConfig("git-p4.syncFromOrigin") == "false":
 598             self.syncWithOrigin = False
 599
 600     def p4File(self, depotPath):
 601         return read_pipe("p4 print -q \"%s\"" % depotPath)
 602
 603     def extractFilesFromCommit(self, commit):
 604         files = []
 605         fnum = 0
 606         while commit.has_key("depotFile%s" % fnum):
 607             path =  commit["depotFile%s" % fnum]
 608             if not path.startswith(self.depotPath):
 609     #            if not self.silent:
 610     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 611                 fnum = fnum + 1
 612                 continue
 613
 614             file = {}
 615             file["path"] = path
 616             file["rev"] = commit["rev%s" % fnum]
 617             file["action"] = commit["action%s" % fnum]
 618             file["type"] = commit["type%s" % fnum]
 619             files.append(file)
 620             fnum = fnum + 1
 621         return files
 622
 623     def stripRepoPath(self, path, prefix):
 624         if self.keepRepoPath:
 625             prefix = re.sub("^(//[^/]+/).*", r'\1', prefix)
 626
 627         return path[len(prefix):]
 628
 629     def splitFilesIntoBranches(self, commit):
 630         branches = {}
 631         fnum = 0
 632         while commit.has_key("depotFile%s" % fnum):
 633             path =  commit["depotFile%s" % fnum]
 634             if not path.startswith(self.depotPath):
 635     #            if not self.silent:
 636     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 637                 fnum = fnum + 1
 638                 continue
 639
 640             file = {}
 641             file["path"] = path
 642             file["rev"] = commit["rev%s" % fnum]
 643             file["action"] = commit["action%s" % fnum]
 644             file["type"] = commit["type%s" % fnum]
 645             fnum = fnum + 1
 646
 647             relPath = self.stripRepoPath(path, self.depotPath)
 648
 649             for branch in self.knownBranches.keys():
 650
 651                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 652                 if relPath.startswith(branch + "/"):
 653                     if branch not in branches:
 654                         branches[branch] = []
 655                     branches[branch].append(file)
 656
 657         return branches
 658
 659     def commit(self, details, files, branch, branchPrefix, parent = ""):
 660         epoch = details["time"]
 661         author = details["user"]
 662
 663         if self.verbose:
 664             print "commit into %s" % branch
 665
 666         self.gitStream.write("commit %s\n" % branch)
 667     #    gitStream.write("mark :%s\n" % details["change"])
 668         self.committedChanges.add(int(details["change"]))
 669         committer = ""
 670         if author not in self.users:
 671             self.getUserMapFromPerforceServer()
 672         if author in self.users:
 673             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 674         else:
 675             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 676
 677         self.gitStream.write("committer %s\n" % committer)
 678
 679         self.gitStream.write("data <<EOT\n")
 680         self.gitStream.write(details["desc"])
 681         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 682         self.gitStream.write("EOT\n\n")
 683
 684         if len(parent) > 0:
 685             if self.verbose:
 686                 print "parent %s" % parent
 687             self.gitStream.write("from %s\n" % parent)
 688
 689         for file in files:
 690             path = file["path"]
 691             if not path.startswith(branchPrefix):
 692     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 693                 continue
 694             rev = file["rev"]
 695             depotPath = path + "#" + rev
 696             relPath = self.stripRepoPath(path, branchPrefix)
 697             action = file["action"]
 698
 699             if file["type"] == "apple":
 700                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 701                 continue
 702
 703             if action == "delete":
 704                 self.gitStream.write("D %s\n" % relPath)
 705             else:
 706                 mode = 644
 707                 if file["type"].startswith("x"):
 708                     mode = 755
 709
 710                 data = self.p4File(depotPath)
 711
 712                 if self.isWindows and file["type"].endswith("text"):
 713                     data = data.replace("\r\n", "\n")
 714
 715                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 716                 self.gitStream.write("data %s\n" % len(data))
 717                 self.gitStream.write(data)
 718                 self.gitStream.write("\n")
 719
 720         self.gitStream.write("\n")
 721
 722         change = int(details["change"])
 723
 724         if self.labels.has_key(change):
 725             label = self.labels[change]
 726             labelDetails = label[0]
 727             labelRevisions = label[1]
 728             if self.verbose:
 729                 print "Change %s is labelled %s" % (change, labelDetails)
 730
 731             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 732
 733             if len(files) == len(labelRevisions):
 734
 735                 cleanedFiles = {}
 736                 for info in files:
 737                     if info["action"] == "delete":
 738                         continue
 739                     cleanedFiles[info["depotFile"]] = info["rev"]
 740
 741                 if cleanedFiles == labelRevisions:
 742                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 743                     self.gitStream.write("from %s\n" % branch)
 744
 745                     owner = labelDetails["Owner"]
 746                     tagger = ""
 747                     if author in self.users:
 748                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 749                     else:
 750                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 751                     self.gitStream.write("tagger %s\n" % tagger)
 752                     self.gitStream.write("data <<EOT\n")
 753                     self.gitStream.write(labelDetails["Description"])
 754                     self.gitStream.write("EOT\n\n")
 755
 756                 else:
 757                     if not self.silent:
 758                         print ("Tag %s does not match with change %s: files do not match."
 759                                % (labelDetails["label"], change))
 760
 761             else:
 762                 if not self.silent:
 763                     print ("Tag %s does not match with change %s: file count is different."
 764                            % (labelDetails["label"], change))
 765
 766     def getUserMapFromPerforceServer(self):
 767         if self.userMapFromPerforceServer:
 768             return
 769         self.users = {}
 770
 771         for output in p4CmdList("users"):
 772             if not output.has_key("User"):
 773                 continue
 774             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 775
 776         cache = open(gitdir + "/p4-usercache.txt", "wb")
 777         for user in self.users.keys():
 778             cache.write("%s\t%s\n" % (user, self.users[user]))
 779         cache.close();
 780         self.userMapFromPerforceServer = True
 781
 782     def loadUserMapFromCache(self):
 783         self.users = {}
 784         self.userMapFromPerforceServer = False
 785         try:
 786             cache = open(gitdir + "/p4-usercache.txt", "rb")
 787             lines = cache.readlines()
 788             cache.close()
 789             for line in lines:
 790                 entry = line.strip().split("\t")
 791                 self.users[entry[0]] = entry[1]
 792         except IOError:
 793             self.getUserMapFromPerforceServer()
 794
 795     def getLabels(self):
 796         self.labels = {}
 797
 798         l = p4CmdList("labels %s..." % self.depotPath)
 799         if len(l) > 0 and not self.silent:
 800             print "Finding files belonging to labels in %s" % self.depotPath
 801
 802         for output in l:
 803             label = output["label"]
 804             revisions = {}
 805             newestChange = 0
 806             if self.verbose:
 807                 print "Querying files for label %s" % label
 808             for file in p4CmdList("files %s...@%s" % (self.depotPath, label)):
 809                 revisions[file["depotFile"]] = file["rev"]
 810                 change = int(file["change"])
 811                 if change > newestChange:
 812                     newestChange = change
 813
 814             self.labels[newestChange] = [output, revisions]
 815
 816         if self.verbose:
 817             print "Label changes: %s" % self.labels.keys()
 818
 819     def getBranchMapping(self):
 820         self.projectName = self.depotPath[self.depotPath.strip().rfind("/") + 1:]
 821
 822         for info in p4CmdList("branches"):
 823             details = p4Cmd("branch -o %s" % info["branch"])
 824             viewIdx = 0
 825             while details.has_key("View%s" % viewIdx):
 826                 paths = details["View%s" % viewIdx].split(" ")
 827                 viewIdx = viewIdx + 1
 828                 # require standard //depot/foo/... //depot/bar/... mapping
 829                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 830                     continue
 831                 source = paths[0]
 832                 destination = paths[1]
 833                 if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 834                     source = source[len(self.depotPath):-4]
 835                     destination = destination[len(self.depotPath):-4]
 836                     if destination not in self.knownBranches:
 837                         self.knownBranches[destination] = source
 838                     if source not in self.knownBranches:
 839                         self.knownBranches[source] = source
 840
 841     def listExistingP4GitBranches(self):
 842         self.p4BranchesInGit = []
 843
 844         cmdline = "git rev-parse --symbolic "
 845         if self.importIntoRemotes:
 846             cmdline += " --remotes"
 847         else:
 848             cmdline += " --branches"
 849
 850         for line in read_pipe_lines(cmdline):
 851             lie = line.strip()
 852             if self.importIntoRemotes and ((not line.startswith("p4/")) or line == "p4/HEAD\n"):
 853                 continue
 854
 855             if self.importIntoRemotes:
 856                 # strip off p4
 857                 branch = re.sub ("^p4/", "", line)
 858
 859             self.p4BranchesInGit.append(branch)
 860             self.initialParents[self.refPrefix + branch] = parseRevision(line)
 861
 862     def createOrUpdateBranchesFromOrigin(self):
 863         if not self.silent:
 864             print "Creating/updating branch(es) in %s based on origin branch(es)" % self.refPrefix
 865
 866         for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 867             line = line.strip()
 868             if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 869                 continue
 870
 871             headName = line[len("origin/")]
 872             remoteHead = self.refPrefix + headName
 873             originHead = "origin/" + headName
 874
 875             [originPreviousDepotPath, originP4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(originHead))
 876             if len(originPreviousDepotPath) == 0 or len(originP4Change) == 0:
 877                 continue
 878
 879             update = False
 880             if not gitBranchExists(remoteHead):
 881                 if self.verbose:
 882                     print "creating %s" % remoteHead
 883                 update = True
 884             else:
 885                 [p4PreviousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(remoteHead))
 886                 if len(p4Change) > 0:
 887                     if originPreviousDepotPath == p4PreviousDepotPath:
 888                         originP4Change = int(originP4Change)
 889                         p4Change = int(p4Change)
 890                         if originP4Change > p4Change:
 891                             print "%s (%s) is newer than %s (%s). Updating p4 branch from origin." % (originHead, originP4Change, remoteHead, p4Change)
 892                             update = True
 893                     else:
 894                         print "Ignoring: %s was imported from %s while %s was imported from %s" % (originHead, originPreviousDepotPath, remoteHead, p4PreviousDepotPath)
 895
 896             if update:
 897                 system("git update-ref %s %s" % (remoteHead, originHead))
 898
 899     def run(self, args):
 900         self.depotPath = ""
 901         self.changeRange = ""
 902         self.initialParent = ""
 903         self.previousDepotPath = ""
 904
 905         # map from branch depot path to parent branch
 906         self.knownBranches = {}
 907         self.initialParents = {}
 908         self.hasOrigin = gitBranchExists("origin")
 909
 910         if self.importIntoRemotes:
 911             self.refPrefix = "refs/remotes/p4/"
 912         else:
 913             self.refPrefix = "refs/heads/"
 914
 915         if self.syncWithOrigin and self.hasOrigin:
 916             if not self.silent:
 917                 print "Syncing with origin first by calling git fetch origin"
 918             system("git fetch origin")
 919
 920         if len(self.branch) == 0:
 921             self.branch = self.refPrefix + "master"
 922             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
 923                 system("git update-ref %s refs/heads/p4" % self.branch)
 924                 system("git branch -D p4");
 925             # create it /after/ importing, when master exists
 926             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
 927                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
 928
 929         if len(args) == 0:
 930             if self.hasOrigin:
 931                 self.createOrUpdateBranchesFromOrigin()
 932             self.listExistingP4GitBranches()
 933
 934             if len(self.p4BranchesInGit) > 1:
 935                 if not self.silent:
 936                     print "Importing from/into multiple branches"
 937                 self.detectBranches = True
 938
 939             if self.verbose:
 940                 print "branches: %s" % self.p4BranchesInGit
 941
 942             p4Change = 0
 943             for branch in self.p4BranchesInGit:
 944                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
 945                 (depotPath, change) = extractDepotPathAndChangeFromGitLog(logMsg)
 946
 947                 if self.verbose:
 948                     print "path %s change %s" % (depotPath, change)
 949
 950                 if len(depotPath) > 0 and len(change) > 0:
 951                     change = int(change) + 1
 952                     p4Change = max(p4Change, change)
 953
 954                     if len(self.previousDepotPath) == 0:
 955                         self.previousDepotPath = depotPath
 956                     else:
 957                         i = 0
 958                         l = min(len(self.previousDepotPath), len(depotPath))
 959                         while i < l and self.previousDepotPath[i] == depotPath[i]:
 960                             i = i + 1
 961                         self.previousDepotPath = self.previousDepotPath[:i]
 962
 963             if p4Change > 0:
 964                 self.depotPath = self.previousDepotPath
 965                 self.changeRange = "@%s,#head" % p4Change
 966                 self.initialParent = parseRevision(self.branch)
 967                 if not self.silent and not self.detectBranches:
 968                     print "Performing incremental import into %s git branch" % self.branch
 969
 970         if not self.branch.startswith("refs/"):
 971             self.branch = "refs/heads/" + self.branch
 972
 973         if len(self.depotPath) != 0:
 974             self.depotPath = self.depotPath.strip()
 975
 976         if len(args) == 0 and len(self.depotPath) != 0:
 977             if not self.silent:
 978                 print "Depot path: %s" % self.depotPath
 979         elif len(args) != 1:
 980             return False
 981         else:
 982             if len(self.depotPath) != 0 and self.depotPath != args[0]:
 983                 print ("previous import used depot path %s and now %s was specified. "
 984                        "This doesn't work!" % (self.depotPath, args[0]))
 985                 sys.exit(1)
 986             self.depotPath = args[0]
 987
 988         self.revision = ""
 989         self.users = {}
 990
 991         if self.depotPath.find("@") != -1:
 992             atIdx = self.depotPath.index("@")
 993             self.changeRange = self.depotPath[atIdx:]
 994             if self.changeRange == "@all":
 995                 self.changeRange = ""
 996             elif self.changeRange.find(",") == -1:
 997                 self.revision = self.changeRange
 998                 self.changeRange = ""
 999             self.depotPath = self.depotPath[0:atIdx]
1000         elif self.depotPath.find("#") != -1:
1001             hashIdx = self.depotPath.index("#")
1002             self.revision = self.depotPath[hashIdx:]
1003             self.depotPath = self.depotPath[0:hashIdx]
1004         elif len(self.previousDepotPath) == 0:
1005             self.revision = "#head"
1006
1007         self.depotPath = re.sub ("\.\.\.$", "", self.depotPath)
1008         if not self.depotPath.endswith("/"):
1009             self.depotPath += "/"
1010
1011         self.loadUserMapFromCache()
1012         self.labels = {}
1013         if self.detectLabels:
1014             self.getLabels();
1015
1016         if self.detectBranches:
1017             self.getBranchMapping();
1018             if self.verbose:
1019                 print "p4-git branches: %s" % self.p4BranchesInGit
1020                 print "initial parents: %s" % self.initialParents
1021             for b in self.p4BranchesInGit:
1022                 if b != "master":
1023                     b = b[len(self.projectName):]
1024                 self.createdBranches.add(b)
1025
1026         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1027
1028         importProcess = subprocess.Popen(["git", "fast-import"],
1029                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE);
1030         self.gitOutput = importProcess.stdout
1031         self.gitStream = importProcess.stdin
1032         self.gitError = importProcess.stderr
1033
1034         if len(self.revision) > 0:
1035             print "Doing initial import of %s from revision %s" % (self.depotPath, self.revision)
1036
1037             details = { "user" : "git perforce import user", "time" : int(time.time()) }
1038             details["desc"] = ("Initial import of %s from the state at revision %s"
1039                                % (self.depotPath, self.revision))
1040             details["change"] = self.revision
1041             newestRevision = 0
1042
1043             fileCnt = 0
1044             for info in p4CmdList("files %s...%s" % (self.depotPath, self.revision)):
1045                 change = int(info["change"])
1046                 if change > newestRevision:
1047                     newestRevision = change
1048
1049                 if info["action"] == "delete":
1050                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1051                     #fileCnt = fileCnt + 1
1052                     continue
1053
1054                 for prop in [ "depotFile", "rev", "action", "type" ]:
1055                     details["%s%s" % (prop, fileCnt)] = info[prop]
1056
1057                 fileCnt = fileCnt + 1
1058
1059             details["change"] = newestRevision
1060
1061             try:
1062                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPath)
1063             except IOError:
1064                 print "IO error with git fast-import. Is your git version recent enough?"
1065                 print self.gitError.read()
1066
1067         else:
1068             changes = []
1069
1070             if len(self.changesFile) > 0:
1071                 output = open(self.changesFile).readlines()
1072                 changeSet = Set()
1073                 for line in output:
1074                     changeSet.add(int(line))
1075
1076                 for change in changeSet:
1077                     changes.append(change)
1078
1079                 changes.sort()
1080             else:
1081                 if self.verbose:
1082                     print "Getting p4 changes for %s...%s" % (self.depotPath, self.changeRange)
1083                 output = read_pipe_lines("p4 changes %s...%s" % (self.depotPath, self.changeRange))
1084
1085                 for line in output:
1086                     changeNum = line.split(" ")[1]
1087                     changes.append(changeNum)
1088
1089                 changes.reverse()
1090
1091                 if len(self.maxChanges) > 0:
1092                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1093
1094             if len(changes) == 0:
1095                 if not self.silent:
1096                     print "No changes to import!"
1097                 return True
1098
1099             self.updatedBranches = set()
1100
1101             cnt = 1
1102             for change in changes:
1103                 description = p4Cmd("describe %s" % change)
1104
1105                 if not self.silent:
1106                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1107                     sys.stdout.flush()
1108                 cnt = cnt + 1
1109
1110                 try:
1111                     if self.detectBranches:
1112                         branches = self.splitFilesIntoBranches(description)
1113                         for branch in branches.keys():
1114                             branchPrefix = self.depotPath + branch + "/"
1115
1116                             parent = ""
1117
1118                             filesForCommit = branches[branch]
1119
1120                             if self.verbose:
1121                                 print "branch is %s" % branch
1122
1123                             self.updatedBranches.add(branch)
1124
1125                             if branch not in self.createdBranches:
1126                                 self.createdBranches.add(branch)
1127                                 parent = self.knownBranches[branch]
1128                                 if parent == branch:
1129                                     parent = ""
1130                                 elif self.verbose:
1131                                     print "parent determined through known branches: %s" % parent
1132
1133                             # main branch? use master
1134                             if branch == "main":
1135                                 branch = "master"
1136                             else:
1137                                 branch = self.projectName + branch
1138
1139                             if parent == "main":
1140                                 parent = "master"
1141                             elif len(parent) > 0:
1142                                 parent = self.projectName + parent
1143
1144                             branch = self.refPrefix + branch
1145                             if len(parent) > 0:
1146                                 parent = self.refPrefix + parent
1147
1148                             if self.verbose:
1149                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1150
1151                             if len(parent) == 0 and branch in self.initialParents:
1152                                 parent = self.initialParents[branch]
1153                                 del self.initialParents[branch]
1154
1155                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
1156                     else:
1157                         files = self.extractFilesFromCommit(description)
1158                         self.commit(description, files, self.branch, self.depotPath, self.initialParent)
1159                         self.initialParent = ""
1160                 except IOError:
1161                     print self.gitError.read()
1162                     sys.exit(1)
1163
1164             if not self.silent:
1165                 print ""
1166                 if len(self.updatedBranches) > 0:
1167                     sys.stdout.write("Updated branches: ")
1168                     for b in self.updatedBranches:
1169                         sys.stdout.write("%s " % b)
1170                     sys.stdout.write("\n")
1171
1172
1173         self.gitStream.close()
1174         if importProcess.wait() != 0:
1175             die("fast-import failed: %s" % self.gitError.read())
1176         self.gitOutput.close()
1177         self.gitError.close()
1178
1179         return True
1180
1181 class P4Rebase(Command):
1182     def __init__(self):
1183         Command.__init__(self)
1184         self.options = [ ]
1185         self.description = ("Fetches the latest revision from perforce and "
1186                             + "rebases the current work (branch) against it")
1187
1188     def run(self, args):
1189         sync = P4Sync()
1190         sync.run([])
1191         print "Rebasing the current branch"
1192         oldHead = read_pipe("git rev-parse HEAD").strip()
1193         system("git rebase p4")
1194         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1195         return True
1196
1197 class P4Clone(P4Sync):
1198     def __init__(self):
1199         P4Sync.__init__(self)
1200         self.description = "Creates a new git repository and imports from Perforce into it"
1201         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1202         self.needsGit = False
1203
1204     def run(self, args):
1205         global gitdir
1206
1207         if len(args) < 1:
1208             return False
1209         depotPath = args[0]
1210         destination = ""
1211         if len(args) == 2:
1212             destination = args[1]
1213         elif len(args) > 2:
1214             return False
1215
1216         if not depotPath.startswith("//"):
1217             return False
1218
1219         depotDir = re.sub("(@[^@]*)$", "", depotPath)
1220         depotDir = re.sub("(#[^#]*)$", "", depotDir)
1221         depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1222         depotDir = re.sub(r"/$", "", depotDir)
1223
1224         if not destination:
1225             destination = os.path.split(depotDir)[1]
1226
1227         print "Importing from %s into %s" % (depotPath, destination)
1228         os.makedirs(destination)
1229         os.chdir(destination)
1230         system("git init")
1231         gitdir = os.getcwd() + "/.git"
1232         if not P4Sync.run(self, [depotPath]):
1233             return False
1234         if self.branch != "master":
1235             if gitBranchExists("refs/remotes/p4/master"):
1236                 system("git branch master refs/remotes/p4/master")
1237                 system("git checkout -f")
1238             else:
1239                 print "Could not detect main branch. No checkout/master branch created."
1240         return True
1241
1242 class HelpFormatter(optparse.IndentedHelpFormatter):
1243     def __init__(self):
1244         optparse.IndentedHelpFormatter.__init__(self)
1245
1246     def format_description(self, description):
1247         if description:
1248             return description + "\n"
1249         else:
1250             return ""
1251
1252 def printUsage(commands):
1253     print "usage: %s <command> [options]" % sys.argv[0]
1254     print ""
1255     print "valid commands: %s" % ", ".join(commands)
1256     print ""
1257     print "Try %s <command> --help for command specific help." % sys.argv[0]
1258     print ""
1259
1260 commands = {
1261     "debug" : P4Debug(),
1262     "submit" : P4Submit(),
1263     "sync" : P4Sync(),
1264     "rebase" : P4Rebase(),
1265     "clone" : P4Clone(),
1266     "rollback" : P4RollBack()
1267 }
1268
1269 if len(sys.argv[1:]) == 0:
1270     printUsage(commands.keys())
1271     sys.exit(2)
1272
1273 cmd = ""
1274 cmdName = sys.argv[1]
1275 try:
1276     cmd = commands[cmdName]
1277 except KeyError:
1278     print "unknown command %s" % cmdName
1279     print ""
1280     printUsage(commands.keys())
1281     sys.exit(2)
1282
1283 options = cmd.options
1284 cmd.gitdir = gitdir
1285
1286 args = sys.argv[2:]
1287
1288 if len(options) > 0:
1289     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1290
1291     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1292                                    options,
1293                                    description = cmd.description,
1294                                    formatter = HelpFormatter())
1295
1296     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1297
1298 verbose = cmd.verbose
1299 if cmd.needsGit:
1300     gitdir = cmd.gitdir
1301     if len(gitdir) == 0:
1302         gitdir = ".git"
1303         if not isValidGitDir(gitdir):
1304             gitdir = read_pipe("git rev-parse --git-dir").strip()
1305             if os.path.exists(gitdir):
1306                 cdup = read_pipe("git rev-parse --show-cdup").strip()
1307                 if len(cdup) > 0:
1308                     os.chdir(cdup);
1309
1310     if not isValidGitDir(gitdir):
1311         if isValidGitDir(gitdir + "/.git"):
1312             gitdir += "/.git"
1313         else:
1314             die("fatal: cannot locate git repository at %s" % gitdir)
1315
1316     os.environ["GIT_DIR"] = gitdir
1317
1318 if not cmd.run(args):
1319     parser.print_help()