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