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 from sets import Set;
  15
  16 gitdir = os.environ.get("GIT_DIR", "")
  17 silent = False
  18
  19 def write_pipe(c, str):
  20     if not silent:
  21         sys.stderr.write('writing pipe: %s\n' % c)
  22
  23     ## todo: check return status
  24     pipe = os.popen(c, 'w')
  25     val = pipe.write(str)
  26     if pipe.close():
  27         sys.stderr.write('Command failed')
  28         sys.exit(1)
  29
  30     return val
  31
  32 def read_pipe(c):
  33     sys.stderr.write('reading pipe: %s\n' % c)
  34     ## todo: check return status
  35     pipe = os.popen(c, 'rb')
  36     val = pipe.read()
  37     if pipe.close():
  38         sys.stderr.write('Command failed')
  39         sys.exit(1)
  40
  41     return val
  42
  43
  44 def read_pipe_lines(c):
  45     sys.stderr.write('reading pipe: %s\n' % c)
  46     ## todo: check return status
  47     pipe = os.popen(c, 'rb')
  48     val = pipe.readlines()
  49     if pipe.close():
  50         sys.stderr.write('Command failed')
  51         sys.exit(1)
  52
  53     return val
  54
  55 def p4CmdList(cmd):
  56     cmd = "p4 -G %s" % cmd
  57     pipe = os.popen(cmd, "rb")
  58
  59     result = []
  60     try:
  61         while True:
  62             entry = marshal.load(pipe)
  63             result.append(entry)
  64     except EOFError:
  65         pass
  66     exitCode = pipe.close()
  67     if exitCode != None:
  68         entry = {}
  69         entry["p4ExitCode"] = exitCode
  70         result.append(entry)
  71
  72     return result
  73
  74 def p4Cmd(cmd):
  75     list = p4CmdList(cmd)
  76     result = {}
  77     for entry in list:
  78         result.update(entry)
  79     return result;
  80
  81 def p4Where(depotPath):
  82     if not depotPath.endswith("/"):
  83         depotPath += "/"
  84     output = p4Cmd("where %s..." % depotPath)
  85     if output["code"] == "error":
  86         return ""
  87     clientPath = ""
  88     if "path" in output:
  89         clientPath = output.get("path")
  90     elif "data" in output:
  91         data = output.get("data")
  92         lastSpace = data.rfind(" ")
  93         clientPath = data[lastSpace + 1:]
  94
  95     if clientPath.endswith("..."):
  96         clientPath = clientPath[:-3]
  97     return clientPath
  98
  99 def die(msg):
 100     sys.stderr.write(msg + "\n")
 101     sys.exit(1)
 102
 103 def currentGitBranch():
 104     return read_pipe("git name-rev HEAD").split(" ")[1][:-1]
 105
 106 def isValidGitDir(path):
 107     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
 108         return True;
 109     return False
 110
 111 def parseRevision(ref):
 112     return read_pipe("git rev-parse %s" % ref)[:-1]
 113
 114 def system(cmd):
 115     if os.system(cmd) != 0:
 116         die("command failed: %s" % cmd)
 117
 118 def extractLogMessageFromGitCommit(commit):
 119     logMessage = ""
 120
 121     ## fixme: title is first line of commit, not 1st paragraph.
 122     foundTitle = False
 123     for log in read_pipe_lines("git cat-file commit %s" % commit):
 124        if not foundTitle:
 125            if len(log) == 1:
 126                foundTitle = True
 127            continue
 128
 129        logMessage += log
 130     return logMessage
 131
 132 def extractDepotPathAndChangeFromGitLog(log):
 133     values = {}
 134     for line in log.split("\n"):
 135         line = line.strip()
 136         if line.startswith("[git-p4:") and line.endswith("]"):
 137             line = line[8:-1].strip()
 138             for assignment in line.split(":"):
 139                 variable = assignment.strip()
 140                 value = ""
 141                 equalPos = assignment.find("=")
 142                 if equalPos != -1:
 143                     variable = assignment[:equalPos].strip()
 144                     value = assignment[equalPos + 1:].strip()
 145                     if value.startswith("\"") and value.endswith("\""):
 146                         value = value[1:-1]
 147                 values[variable] = value
 148
 149     return values.get("depot-path"), values.get("change")
 150
 151 def gitBranchExists(branch):
 152     proc = subprocess.Popen(["git", "rev-parse", branch], stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 153     return proc.wait() == 0;
 154
 155 def gitConfig(key):
 156     return mypopen("git config %s" % key).read()[:-1]
 157
 158 class Command:
 159     def __init__(self):
 160         self.usage = "usage: %prog [options]"
 161         self.needsGit = True
 162
 163 class P4Debug(Command):
 164     def __init__(self):
 165         Command.__init__(self)
 166         self.options = [
 167         ]
 168         self.description = "A tool to debug the output of p4 -G."
 169         self.needsGit = False
 170
 171     def run(self, args):
 172         for output in p4CmdList(" ".join(args)):
 173             print output
 174         return True
 175
 176 class P4RollBack(Command):
 177     def __init__(self):
 178         Command.__init__(self)
 179         self.options = [
 180             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 181             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 182         ]
 183         self.description = "A tool to debug the multi-branch import. Don't use :)"
 184         self.verbose = False
 185         self.rollbackLocalBranches = False
 186
 187     def run(self, args):
 188         if len(args) != 1:
 189             return False
 190         maxChange = int(args[0])
 191
 192         if "p4ExitCode" in p4Cmd("changes -m 1"):
 193             die("Problems executing p4");
 194
 195         if self.rollbackLocalBranches:
 196             refPrefix = "refs/heads/"
 197             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 198         else:
 199             refPrefix = "refs/remotes/"
 200             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 201
 202         for line in lines:
 203             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 204                 ref = refPrefix + line[:-1]
 205                 log = extractLogMessageFromGitCommit(ref)
 206                 depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 207                 changed = False
 208
 209                 if len(p4Cmd("changes -m 1 %s...@%s" % (depotPath, maxChange))) == 0:
 210                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 211                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 212                     continue
 213
 214                 while len(change) > 0 and int(change) > maxChange:
 215                     changed = True
 216                     if self.verbose:
 217                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 218                     system("git update-ref %s \"%s^\"" % (ref, ref))
 219                     log = extractLogMessageFromGitCommit(ref)
 220                     depotPath, change = extractDepotPathAndChangeFromGitLog(log)
 221
 222                 if changed:
 223                     print "%s rewound to %s" % (ref, change)
 224
 225         return True
 226
 227 class P4Submit(Command):
 228     def __init__(self):
 229         Command.__init__(self)
 230         self.options = [
 231                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 232                 optparse.make_option("--origin", dest="origin"),
 233                 optparse.make_option("--reset", action="store_true", dest="reset"),
 234                 optparse.make_option("--log-substitutions", dest="substFile"),
 235                 optparse.make_option("--dry-run", action="store_true"),
 236                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 237                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 238         ]
 239         self.description = "Submit changes from git to the perforce depot."
 240         self.usage += " [name of git branch to submit into perforce depot]"
 241         self.firstTime = True
 242         self.reset = False
 243         self.interactive = True
 244         self.dryRun = False
 245         self.substFile = ""
 246         self.firstTime = True
 247         self.origin = ""
 248         self.directSubmit = False
 249         self.trustMeLikeAFool = False
 250
 251         self.logSubstitutions = {}
 252         self.logSubstitutions["<enter description here>"] = "%log%"
 253         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 254
 255     def check(self):
 256         if len(p4CmdList("opened ...")) > 0:
 257             die("You have files opened with perforce! Close them before starting the sync.")
 258
 259     def start(self):
 260         if len(self.config) > 0 and not self.reset:
 261             die("Cannot start sync. Previous sync config found at %s\n"
 262                 "If you want to start submitting again from scratch "
 263                 "maybe you want to call git-p4 submit --reset" % self.configFile)
 264
 265         commits = []
 266         if self.directSubmit:
 267             commits.append("0")
 268         else:
 269             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 270                 commits.append(line[:-1])
 271             commits.reverse()
 272
 273         self.config["commits"] = commits
 274
 275     def prepareLogMessage(self, template, message):
 276         result = ""
 277
 278         for line in template.split("\n"):
 279             if line.startswith("#"):
 280                 result += line + "\n"
 281                 continue
 282
 283             substituted = False
 284             for key in self.logSubstitutions.keys():
 285                 if line.find(key) != -1:
 286                     value = self.logSubstitutions[key]
 287                     value = value.replace("%log%", message)
 288                     if value != "@remove@":
 289                         result += line.replace(key, value) + "\n"
 290                     substituted = True
 291                     break
 292
 293             if not substituted:
 294                 result += line + "\n"
 295
 296         return result
 297
 298     def applyCommit(self, id):
 299         if self.directSubmit:
 300             print "Applying local change in working directory/index"
 301             diff = self.diffStatus
 302         else:
 303             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 304             diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
 305         filesToAdd = set()
 306         filesToDelete = set()
 307         editedFiles = set()
 308         for line in diff:
 309             modifier = line[0]
 310             path = line[1:].strip()
 311             if modifier == "M":
 312                 system("p4 edit \"%s\"" % path)
 313                 editedFiles.add(path)
 314             elif modifier == "A":
 315                 filesToAdd.add(path)
 316                 if path in filesToDelete:
 317                     filesToDelete.remove(path)
 318             elif modifier == "D":
 319                 filesToDelete.add(path)
 320                 if path in filesToAdd:
 321                     filesToAdd.remove(path)
 322             else:
 323                 die("unknown modifier %s for %s" % (modifier, path))
 324
 325         if self.directSubmit:
 326             diffcmd = "cat \"%s\"" % self.diffFile
 327         else:
 328             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 329         patchcmd = diffcmd + " | git apply "
 330         tryPatchCmd = patchcmd + "--check -"
 331         applyPatchCmd = patchcmd + "--check --apply -"
 332
 333         if os.system(tryPatchCmd) != 0:
 334             print "Unfortunately applying the change failed!"
 335             print "What do you want to do?"
 336             response = "x"
 337             while response != "s" and response != "a" and response != "w":
 338                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 339                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 340             if response == "s":
 341                 print "Skipping! Good luck with the next patches..."
 342                 return
 343             elif response == "a":
 344                 os.system(applyPatchCmd)
 345                 if len(filesToAdd) > 0:
 346                     print "You may also want to call p4 add on the following files:"
 347                     print " ".join(filesToAdd)
 348                 if len(filesToDelete):
 349                     print "The following files should be scheduled for deletion with p4 delete:"
 350                     print " ".join(filesToDelete)
 351                 die("Please resolve and submit the conflict manually and "
 352                     + "continue afterwards with git-p4 submit --continue")
 353             elif response == "w":
 354                 system(diffcmd + " > patch.txt")
 355                 print "Patch saved to patch.txt in %s !" % self.clientPath
 356                 die("Please resolve and submit the conflict manually and "
 357                     "continue afterwards with git-p4 submit --continue")
 358
 359         system(applyPatchCmd)
 360
 361         for f in filesToAdd:
 362             system("p4 add %s" % f)
 363         for f in filesToDelete:
 364             system("p4 revert %s" % f)
 365             system("p4 delete %s" % f)
 366
 367         logMessage = ""
 368         if not self.directSubmit:
 369             logMessage = extractLogMessageFromGitCommit(id)
 370             logMessage = logMessage.replace("\n", "\n\t")
 371             logMessage = logMessage[:-1]
 372
 373         template = read_pipe("p4 change -o")
 374
 375         if self.interactive:
 376             submitTemplate = self.prepareLogMessage(template, logMessage)
 377             diff = read_pipe("p4 diff -du ...")
 378
 379             for newFile in filesToAdd:
 380                 diff += "==== new file ====\n"
 381                 diff += "--- /dev/null\n"
 382                 diff += "+++ %s\n" % newFile
 383                 f = open(newFile, "r")
 384                 for line in f.readlines():
 385                     diff += "+" + line
 386                 f.close()
 387
 388             separatorLine = "######## everything below this line is just the diff #######"
 389             if platform.system() == "Windows":
 390                 separatorLine += "\r"
 391             separatorLine += "\n"
 392
 393             response = "e"
 394             if self.trustMeLikeAFool:
 395                 response = "y"
 396
 397             firstIteration = True
 398             while response == "e":
 399                 if not firstIteration:
 400                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 401                 firstIteration = False
 402                 if response == "e":
 403                     [handle, fileName] = tempfile.mkstemp()
 404                     tmpFile = os.fdopen(handle, "w+")
 405                     tmpFile.write(submitTemplate + separatorLine + diff)
 406                     tmpFile.close()
 407                     defaultEditor = "vi"
 408                     if platform.system() == "Windows":
 409                         defaultEditor = "notepad"
 410                     editor = os.environ.get("EDITOR", defaultEditor);
 411                     system(editor + " " + fileName)
 412                     tmpFile = open(fileName, "rb")
 413                     message = tmpFile.read()
 414                     tmpFile.close()
 415                     os.remove(fileName)
 416                     submitTemplate = message[:message.index(separatorLine)]
 417
 418             if response == "y" or response == "yes":
 419                if self.dryRun:
 420                    print submitTemplate
 421                    raw_input("Press return to continue...")
 422                else:
 423                    if self.directSubmit:
 424                        print "Submitting to git first"
 425                        os.chdir(self.oldWorkingDirectory)
 426                        write_pipe("git commit -a -F -", submitTemplate)
 427                        os.chdir(self.clientPath)
 428
 429                    write_pipe("p4 submit -i", submitTemplate)
 430             elif response == "s":
 431                 for f in editedFiles:
 432                     system("p4 revert \"%s\"" % f);
 433                 for f in filesToAdd:
 434                     system("p4 revert \"%s\"" % f);
 435                     system("rm %s" %f)
 436                 for f in filesToDelete:
 437                     system("p4 delete \"%s\"" % f);
 438                 return
 439             else:
 440                 print "Not submitting!"
 441                 self.interactive = False
 442         else:
 443             fileName = "submit.txt"
 444             file = open(fileName, "w+")
 445             file.write(self.prepareLogMessage(template, logMessage))
 446             file.close()
 447             print ("Perforce submit template written as %s. "
 448                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 449                    % (fileName, fileName))
 450
 451     def run(self, args):
 452         global gitdir
 453         # make gitdir absolute so we can cd out into the perforce checkout
 454         gitdir = os.path.abspath(gitdir)
 455         os.environ["GIT_DIR"] = gitdir
 456
 457         if len(args) == 0:
 458             self.master = currentGitBranch()
 459             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 460                 die("Detecting current git branch failed!")
 461         elif len(args) == 1:
 462             self.master = args[0]
 463         else:
 464             return False
 465
 466         depotPath = ""
 467         if gitBranchExists("p4"):
 468             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 469         if len(depotPath) == 0 and gitBranchExists("origin"):
 470             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 471
 472         if len(depotPath) == 0:
 473             print "Internal error: cannot locate perforce depot path from existing branches"
 474             sys.exit(128)
 475
 476         self.clientPath = p4Where(depotPath)
 477
 478         if len(self.clientPath) == 0:
 479             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 480             sys.exit(128)
 481
 482         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
 483         self.oldWorkingDirectory = os.getcwd()
 484
 485         if self.directSubmit:
 486             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 487             if len(self.diffStatus) == 0:
 488                 print "No changes in working directory to submit."
 489                 return True
 490             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 491             self.diffFile = gitdir + "/p4-git-diff"
 492             f = open(self.diffFile, "wb")
 493             f.write(patch)
 494             f.close();
 495
 496         os.chdir(self.clientPath)
 497         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
 498         if response == "y" or response == "yes":
 499             system("p4 sync ...")
 500
 501         if len(self.origin) == 0:
 502             if gitBranchExists("p4"):
 503                 self.origin = "p4"
 504             else:
 505                 self.origin = "origin"
 506
 507         if self.reset:
 508             self.firstTime = True
 509
 510         if len(self.substFile) > 0:
 511             for line in open(self.substFile, "r").readlines():
 512                 tokens = line[:-1].split("=")
 513                 self.logSubstitutions[tokens[0]] = tokens[1]
 514
 515         self.check()
 516         self.configFile = gitdir + "/p4-git-sync.cfg"
 517         self.config = shelve.open(self.configFile, writeback=True)
 518
 519         if self.firstTime:
 520             self.start()
 521
 522         commits = self.config.get("commits", [])
 523
 524         while len(commits) > 0:
 525             self.firstTime = False
 526             commit = commits[0]
 527             commits = commits[1:]
 528             self.config["commits"] = commits
 529             self.applyCommit(commit)
 530             if not self.interactive:
 531                 break
 532
 533         self.config.close()
 534
 535         if self.directSubmit:
 536             os.remove(self.diffFile)
 537
 538         if len(commits) == 0:
 539             if self.firstTime:
 540                 print "No changes found to apply between %s and current HEAD" % self.origin
 541             else:
 542                 print "All changes applied!"
 543                 os.chdir(self.oldWorkingDirectory)
 544                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
 545                 if response == "y" or response == "yes":
 546                     rebase = P4Rebase()
 547                     rebase.run([])
 548             os.remove(self.configFile)
 549
 550         return True
 551
 552 class P4Sync(Command):
 553     def __init__(self):
 554         Command.__init__(self)
 555         self.options = [
 556                 optparse.make_option("--branch", dest="branch"),
 557                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 558                 optparse.make_option("--changesfile", dest="changesFile"),
 559                 optparse.make_option("--silent", dest="silent", action="store_true"),
 560                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 561                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 562                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false"),
 563                 optparse.make_option("--max-changes", dest="maxChanges")
 564         ]
 565         self.description = """Imports from Perforce into a git repository.\n
 566     example:
 567     //depot/my/project/ -- to import the current head
 568     //depot/my/project/@all -- to import everything
 569     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 570
 571     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 572
 573         self.usage += " //depot/path[@revRange]"
 574
 575         self.silent = False
 576         self.createdBranches = Set()
 577         self.committedChanges = Set()
 578         self.branch = ""
 579         self.detectBranches = False
 580         self.detectLabels = False
 581         self.changesFile = ""
 582         self.syncWithOrigin = True
 583         self.verbose = False
 584         self.importIntoRemotes = True
 585         self.maxChanges = ""
 586         self.isWindows = (platform.system() == "Windows")
 587
 588         if gitConfig("git-p4.syncFromOrigin") == "false":
 589             self.syncWithOrigin = False
 590
 591     def p4File(self, depotPath):
 592         return read_pipe("p4 print -q \"%s\"" % depotPath)
 593
 594     def extractFilesFromCommit(self, commit):
 595         files = []
 596         fnum = 0
 597         while commit.has_key("depotFile%s" % fnum):
 598             path =  commit["depotFile%s" % fnum]
 599             if not path.startswith(self.depotPath):
 600     #            if not self.silent:
 601     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 602                 fnum = fnum + 1
 603                 continue
 604
 605             file = {}
 606             file["path"] = path
 607             file["rev"] = commit["rev%s" % fnum]
 608             file["action"] = commit["action%s" % fnum]
 609             file["type"] = commit["type%s" % fnum]
 610             files.append(file)
 611             fnum = fnum + 1
 612         return files
 613
 614     def splitFilesIntoBranches(self, commit):
 615         branches = {}
 616
 617         fnum = 0
 618         while commit.has_key("depotFile%s" % fnum):
 619             path =  commit["depotFile%s" % fnum]
 620             if not path.startswith(self.depotPath):
 621     #            if not self.silent:
 622     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.depotPath, change)
 623                 fnum = fnum + 1
 624                 continue
 625
 626             file = {}
 627             file["path"] = path
 628             file["rev"] = commit["rev%s" % fnum]
 629             file["action"] = commit["action%s" % fnum]
 630             file["type"] = commit["type%s" % fnum]
 631             fnum = fnum + 1
 632
 633             relPath = path[len(self.depotPath):]
 634
 635             for branch in self.knownBranches.keys():
 636                 if relPath.startswith(branch + "/"): # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 637                     if branch not in branches:
 638                         branches[branch] = []
 639                     branches[branch].append(file)
 640
 641         return branches
 642
 643     def commit(self, details, files, branch, branchPrefix, parent = ""):
 644         epoch = details["time"]
 645         author = details["user"]
 646
 647         if self.verbose:
 648             print "commit into %s" % branch
 649
 650         self.gitStream.write("commit %s\n" % branch)
 651     #    gitStream.write("mark :%s\n" % details["change"])
 652         self.committedChanges.add(int(details["change"]))
 653         committer = ""
 654         if author not in self.users:
 655             self.getUserMapFromPerforceServer()
 656         if author in self.users:
 657             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 658         else:
 659             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 660
 661         self.gitStream.write("committer %s\n" % committer)
 662
 663         self.gitStream.write("data <<EOT\n")
 664         self.gitStream.write(details["desc"])
 665         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 666         self.gitStream.write("EOT\n\n")
 667
 668         if len(parent) > 0:
 669             if self.verbose:
 670                 print "parent %s" % parent
 671             self.gitStream.write("from %s\n" % parent)
 672
 673         for file in files:
 674             path = file["path"]
 675             if not path.startswith(branchPrefix):
 676     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 677                 continue
 678             rev = file["rev"]
 679             depotPath = path + "#" + rev
 680             relPath = path[len(branchPrefix):]
 681             action = file["action"]
 682
 683             if file["type"] == "apple":
 684                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 685                 continue
 686
 687             if action == "delete":
 688                 self.gitStream.write("D %s\n" % relPath)
 689             else:
 690                 mode = 644
 691                 if file["type"].startswith("x"):
 692                     mode = 755
 693
 694                 data = self.p4File(depotPath)
 695
 696                 if self.isWindows and file["type"].endswith("text"):
 697                     data = data.replace("\r\n", "\n")
 698
 699                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 700                 self.gitStream.write("data %s\n" % len(data))
 701                 self.gitStream.write(data)
 702                 self.gitStream.write("\n")
 703
 704         self.gitStream.write("\n")
 705
 706         change = int(details["change"])
 707
 708         if self.labels.has_key(change):
 709             label = self.labels[change]
 710             labelDetails = label[0]
 711             labelRevisions = label[1]
 712             if self.verbose:
 713                 print "Change %s is labelled %s" % (change, labelDetails)
 714
 715             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 716
 717             if len(files) == len(labelRevisions):
 718
 719                 cleanedFiles = {}
 720                 for info in files:
 721                     if info["action"] == "delete":
 722                         continue
 723                     cleanedFiles[info["depotFile"]] = info["rev"]
 724
 725                 if cleanedFiles == labelRevisions:
 726                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 727                     self.gitStream.write("from %s\n" % branch)
 728
 729                     owner = labelDetails["Owner"]
 730                     tagger = ""
 731                     if author in self.users:
 732                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 733                     else:
 734                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 735                     self.gitStream.write("tagger %s\n" % tagger)
 736                     self.gitStream.write("data <<EOT\n")
 737                     self.gitStream.write(labelDetails["Description"])
 738                     self.gitStream.write("EOT\n\n")
 739
 740                 else:
 741                     if not self.silent:
 742                         print ("Tag %s does not match with change %s: files do not match."
 743                                % (labelDetails["label"], change))
 744
 745             else:
 746                 if not self.silent:
 747                     print ("Tag %s does not match with change %s: file count is different."
 748                            % (labelDetails["label"], change))
 749
 750     def getUserMapFromPerforceServer(self):
 751         if self.userMapFromPerforceServer:
 752             return
 753         self.users = {}
 754
 755         for output in p4CmdList("users"):
 756             if not output.has_key("User"):
 757                 continue
 758             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 759
 760         cache = open(gitdir + "/p4-usercache.txt", "wb")
 761         for user in self.users.keys():
 762             cache.write("%s\t%s\n" % (user, self.users[user]))
 763         cache.close();
 764         self.userMapFromPerforceServer = True
 765
 766     def loadUserMapFromCache(self):
 767         self.users = {}
 768         self.userMapFromPerforceServer = False
 769         try:
 770             cache = open(gitdir + "/p4-usercache.txt", "rb")
 771             lines = cache.readlines()
 772             cache.close()
 773             for line in lines:
 774                 entry = line[:-1].split("\t")
 775                 self.users[entry[0]] = entry[1]
 776         except IOError:
 777             self.getUserMapFromPerforceServer()
 778
 779     def getLabels(self):
 780         self.labels = {}
 781
 782         l = p4CmdList("labels %s..." % self.depotPath)
 783         if len(l) > 0 and not self.silent:
 784             print "Finding files belonging to labels in %s" % self.depotPath
 785
 786         for output in l:
 787             label = output["label"]
 788             revisions = {}
 789             newestChange = 0
 790             if self.verbose:
 791                 print "Querying files for label %s" % label
 792             for file in p4CmdList("files %s...@%s" % (self.depotPath, label)):
 793                 revisions[file["depotFile"]] = file["rev"]
 794                 change = int(file["change"])
 795                 if change > newestChange:
 796                     newestChange = change
 797
 798             self.labels[newestChange] = [output, revisions]
 799
 800         if self.verbose:
 801             print "Label changes: %s" % self.labels.keys()
 802
 803     def getBranchMapping(self):
 804         self.projectName = self.depotPath[self.depotPath[:-1].rfind("/") + 1:]
 805
 806         for info in p4CmdList("branches"):
 807             details = p4Cmd("branch -o %s" % info["branch"])
 808             viewIdx = 0
 809             while details.has_key("View%s" % viewIdx):
 810                 paths = details["View%s" % viewIdx].split(" ")
 811                 viewIdx = viewIdx + 1
 812                 # require standard //depot/foo/... //depot/bar/... mapping
 813                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
 814                     continue
 815                 source = paths[0]
 816                 destination = paths[1]
 817                 if source.startswith(self.depotPath) and destination.startswith(self.depotPath):
 818                     source = source[len(self.depotPath):-4]
 819                     destination = destination[len(self.depotPath):-4]
 820                     if destination not in self.knownBranches:
 821                         self.knownBranches[destination] = source
 822                     if source not in self.knownBranches:
 823                         self.knownBranches[source] = source
 824
 825     def listExistingP4GitBranches(self):
 826         self.p4BranchesInGit = []
 827
 828         cmdline = "git rev-parse --symbolic "
 829         if self.importIntoRemotes:
 830             cmdline += " --remotes"
 831         else:
 832             cmdline += " --branches"
 833
 834         for line in read_pipe_lines(cmdline):
 835             if self.importIntoRemotes and ((not line.startswith("p4/")) or line == "p4/HEAD\n"):
 836                 continue
 837             if self.importIntoRemotes:
 838                 # strip off p4
 839                 branch = line[3:-1]
 840             else:
 841                 branch = line[:-1]
 842             self.p4BranchesInGit.append(branch)
 843             self.initialParents[self.refPrefix + branch] = parseRevision(line[:-1])
 844
 845     def createOrUpdateBranchesFromOrigin(self):
 846         if not self.silent:
 847             print "Creating/updating branch(es) in %s based on origin branch(es)" % self.refPrefix
 848
 849         for line in mypopen("git rev-parse --symbolic --remotes"):
 850             if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
 851                 continue
 852
 853             headName = line[len("origin/"):-1]
 854             remoteHead = self.refPrefix + headName
 855             originHead = "origin/" + headName
 856
 857             [originPreviousDepotPath, originP4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(originHead))
 858             if len(originPreviousDepotPath) == 0 or len(originP4Change) == 0:
 859                 continue
 860
 861             update = False
 862             if not gitBranchExists(remoteHead):
 863                 if self.verbose:
 864                     print "creating %s" % remoteHead
 865                 update = True
 866             else:
 867                 [p4PreviousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(remoteHead))
 868                 if len(p4Change) > 0:
 869                     if originPreviousDepotPath == p4PreviousDepotPath:
 870                         originP4Change = int(originP4Change)
 871                         p4Change = int(p4Change)
 872                         if originP4Change > p4Change:
 873                             print "%s (%s) is newer than %s (%s). Updating p4 branch from origin." % (originHead, originP4Change, remoteHead, p4Change)
 874                             update = True
 875                     else:
 876                         print "Ignoring: %s was imported from %s while %s was imported from %s" % (originHead, originPreviousDepotPath, remoteHead, p4PreviousDepotPath)
 877
 878             if update:
 879                 system("git update-ref %s %s" % (remoteHead, originHead))
 880
 881     def run(self, args):
 882         self.depotPath = ""
 883         self.changeRange = ""
 884         self.initialParent = ""
 885         self.previousDepotPath = ""
 886
 887         # map from branch depot path to parent branch
 888         self.knownBranches = {}
 889         self.initialParents = {}
 890         self.hasOrigin = gitBranchExists("origin")
 891
 892         if self.importIntoRemotes:
 893             self.refPrefix = "refs/remotes/p4/"
 894         else:
 895             self.refPrefix = "refs/heads/"
 896
 897         if self.syncWithOrigin and self.hasOrigin:
 898             if not self.silent:
 899                 print "Syncing with origin first by calling git fetch origin"
 900             system("git fetch origin")
 901
 902         if len(self.branch) == 0:
 903             self.branch = self.refPrefix + "master"
 904             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
 905                 system("git update-ref %s refs/heads/p4" % self.branch)
 906                 system("git branch -D p4");
 907             # create it /after/ importing, when master exists
 908             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
 909                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
 910
 911         if len(args) == 0:
 912             if self.hasOrigin:
 913                 self.createOrUpdateBranchesFromOrigin()
 914             self.listExistingP4GitBranches()
 915
 916             if len(self.p4BranchesInGit) > 1:
 917                 if not self.silent:
 918                     print "Importing from/into multiple branches"
 919                 self.detectBranches = True
 920
 921             if self.verbose:
 922                 print "branches: %s" % self.p4BranchesInGit
 923
 924             p4Change = 0
 925             for branch in self.p4BranchesInGit:
 926                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
 927                 (depotPath, change) = extractDepotPathAndChangeFromGitLog(logMsg)
 928
 929                 if self.verbose:
 930                     print "path %s change %s" % (depotPath, change)
 931
 932                 if len(depotPath) > 0 and len(change) > 0:
 933                     change = int(change) + 1
 934                     p4Change = max(p4Change, change)
 935
 936                     if len(self.previousDepotPath) == 0:
 937                         self.previousDepotPath = depotPath
 938                     else:
 939                         i = 0
 940                         l = min(len(self.previousDepotPath), len(depotPath))
 941                         while i < l and self.previousDepotPath[i] == depotPath[i]:
 942                             i = i + 1
 943                         self.previousDepotPath = self.previousDepotPath[:i]
 944
 945             if p4Change > 0:
 946                 self.depotPath = self.previousDepotPath
 947                 self.changeRange = "@%s,#head" % p4Change
 948                 self.initialParent = parseRevision(self.branch)
 949                 if not self.silent and not self.detectBranches:
 950                     print "Performing incremental import into %s git branch" % self.branch
 951
 952         if not self.branch.startswith("refs/"):
 953             self.branch = "refs/heads/" + self.branch
 954
 955         if len(self.depotPath) != 0:
 956             self.depotPath = self.depotPath[:-1]
 957
 958         if len(args) == 0 and len(self.depotPath) != 0:
 959             if not self.silent:
 960                 print "Depot path: %s" % self.depotPath
 961         elif len(args) != 1:
 962             return False
 963         else:
 964             if len(self.depotPath) != 0 and self.depotPath != args[0]:
 965                 print ("previous import used depot path %s and now %s was specified. "
 966                        "This doesn't work!" % (self.depotPath, args[0]))
 967                 sys.exit(1)
 968             self.depotPath = args[0]
 969
 970         self.revision = ""
 971         self.users = {}
 972
 973         if self.depotPath.find("@") != -1:
 974             atIdx = self.depotPath.index("@")
 975             self.changeRange = self.depotPath[atIdx:]
 976             if self.changeRange == "@all":
 977                 self.changeRange = ""
 978             elif self.changeRange.find(",") == -1:
 979                 self.revision = self.changeRange
 980                 self.changeRange = ""
 981             self.depotPath = self.depotPath[0:atIdx]
 982         elif self.depotPath.find("#") != -1:
 983             hashIdx = self.depotPath.index("#")
 984             self.revision = self.depotPath[hashIdx:]
 985             self.depotPath = self.depotPath[0:hashIdx]
 986         elif len(self.previousDepotPath) == 0:
 987             self.revision = "#head"
 988
 989         self.depotPath = re.sub ("\.\.\.$", "", self.depotPath)
 990         if not self.depotPath.endswith("/"):
 991             self.depotPath += "/"
 992
 993         self.loadUserMapFromCache()
 994         self.labels = {}
 995         if self.detectLabels:
 996             self.getLabels();
 997
 998         if self.detectBranches:
 999             self.getBranchMapping();
1000             if self.verbose:
1001                 print "p4-git branches: %s" % self.p4BranchesInGit
1002                 print "initial parents: %s" % self.initialParents
1003             for b in self.p4BranchesInGit:
1004                 if b != "master":
1005                     b = b[len(self.projectName):]
1006                 self.createdBranches.add(b)
1007
1008         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1009
1010         importProcess = subprocess.Popen(["git", "fast-import"],
1011                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE);
1012         self.gitOutput = importProcess.stdout
1013         self.gitStream = importProcess.stdin
1014         self.gitError = importProcess.stderr
1015
1016         if len(self.revision) > 0:
1017             print "Doing initial import of %s from revision %s" % (self.depotPath, self.revision)
1018
1019             details = { "user" : "git perforce import user", "time" : int(time.time()) }
1020             details["desc"] = ("Initial import of %s from the state at revision %s"
1021                                % (self.depotPath, self.revision))
1022             details["change"] = self.revision
1023             newestRevision = 0
1024
1025             fileCnt = 0
1026             for info in p4CmdList("files %s...%s" % (self.depotPath, self.revision)):
1027                 change = int(info["change"])
1028                 if change > newestRevision:
1029                     newestRevision = change
1030
1031                 if info["action"] == "delete":
1032                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1033                     #fileCnt = fileCnt + 1
1034                     continue
1035
1036                 for prop in [ "depotFile", "rev", "action", "type" ]:
1037                     details["%s%s" % (prop, fileCnt)] = info[prop]
1038
1039                 fileCnt = fileCnt + 1
1040
1041             details["change"] = newestRevision
1042
1043             try:
1044                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPath)
1045             except IOError:
1046                 print "IO error with git fast-import. Is your git version recent enough?"
1047                 print self.gitError.read()
1048
1049         else:
1050             changes = []
1051
1052             if len(self.changesFile) > 0:
1053                 output = open(self.changesFile).readlines()
1054                 changeSet = Set()
1055                 for line in output:
1056                     changeSet.add(int(line))
1057
1058                 for change in changeSet:
1059                     changes.append(change)
1060
1061                 changes.sort()
1062             else:
1063                 if self.verbose:
1064                     print "Getting p4 changes for %s...%s" % (self.depotPath, self.changeRange)
1065                 output = read_pipe_lines("p4 changes %s...%s" % (self.depotPath, self.changeRange))
1066
1067                 for line in output:
1068                     changeNum = line.split(" ")[1]
1069                     changes.append(changeNum)
1070
1071                 changes.reverse()
1072
1073                 if len(self.maxChanges) > 0:
1074                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1075
1076             if len(changes) == 0:
1077                 if not self.silent:
1078                     print "No changes to import!"
1079                 return True
1080
1081             self.updatedBranches = set()
1082
1083             cnt = 1
1084             for change in changes:
1085                 description = p4Cmd("describe %s" % change)
1086
1087                 if not self.silent:
1088                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1089                     sys.stdout.flush()
1090                 cnt = cnt + 1
1091
1092                 try:
1093                     if self.detectBranches:
1094                         branches = self.splitFilesIntoBranches(description)
1095                         for branch in branches.keys():
1096                             branchPrefix = self.depotPath + branch + "/"
1097
1098                             parent = ""
1099
1100                             filesForCommit = branches[branch]
1101
1102                             if self.verbose:
1103                                 print "branch is %s" % branch
1104
1105                             self.updatedBranches.add(branch)
1106
1107                             if branch not in self.createdBranches:
1108                                 self.createdBranches.add(branch)
1109                                 parent = self.knownBranches[branch]
1110                                 if parent == branch:
1111                                     parent = ""
1112                                 elif self.verbose:
1113                                     print "parent determined through known branches: %s" % parent
1114
1115                             # main branch? use master
1116                             if branch == "main":
1117                                 branch = "master"
1118                             else:
1119                                 branch = self.projectName + branch
1120
1121                             if parent == "main":
1122                                 parent = "master"
1123                             elif len(parent) > 0:
1124                                 parent = self.projectName + parent
1125
1126                             branch = self.refPrefix + branch
1127                             if len(parent) > 0:
1128                                 parent = self.refPrefix + parent
1129
1130                             if self.verbose:
1131                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1132
1133                             if len(parent) == 0 and branch in self.initialParents:
1134                                 parent = self.initialParents[branch]
1135                                 del self.initialParents[branch]
1136
1137                             self.commit(description, filesForCommit, branch, branchPrefix, parent)
1138                     else:
1139                         files = self.extractFilesFromCommit(description)
1140                         self.commit(description, files, self.branch, self.depotPath, self.initialParent)
1141                         self.initialParent = ""
1142                 except IOError:
1143                     print self.gitError.read()
1144                     sys.exit(1)
1145
1146             if not self.silent:
1147                 print ""
1148                 if len(self.updatedBranches) > 0:
1149                     sys.stdout.write("Updated branches: ")
1150                     for b in self.updatedBranches:
1151                         sys.stdout.write("%s " % b)
1152                     sys.stdout.write("\n")
1153
1154
1155         self.gitStream.close()
1156         if importProcess.wait() != 0:
1157             die("fast-import failed: %s" % self.gitError.read())
1158         self.gitOutput.close()
1159         self.gitError.close()
1160
1161         return True
1162
1163 class P4Rebase(Command):
1164     def __init__(self):
1165         Command.__init__(self)
1166         self.options = [ ]
1167         self.description = ("Fetches the latest revision from perforce and "
1168                             + "rebases the current work (branch) against it")
1169
1170     def run(self, args):
1171         sync = P4Sync()
1172         sync.run([])
1173         print "Rebasing the current branch"
1174         oldHead = read_pipe("git rev-parse HEAD")[:-1]
1175         system("git rebase p4")
1176         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1177         return True
1178
1179 class P4Clone(P4Sync):
1180     def __init__(self):
1181         P4Sync.__init__(self)
1182         self.description = "Creates a new git repository and imports from Perforce into it"
1183         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1184         self.needsGit = False
1185
1186     def run(self, args):
1187         global gitdir
1188
1189         if len(args) < 1:
1190             return False
1191         depotPath = args[0]
1192         destination = ""
1193         if len(args) == 2:
1194             destination = args[1]
1195         elif len(args) > 2:
1196             return False
1197
1198         if not depotPath.startswith("//"):
1199             return False
1200
1201         depotDir = re.sub("(@[^@]*)$", "", depotPath)
1202         depotDir = re.sub("(#[^#]*)$", "", depotDir)
1203         depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1204         depotDir = re.sub(r"/$", "", depotDir)
1205
1206         if not destination:
1207             destination = os.path.split(depotDir)[-1]
1208
1209         print "Importing from %s into %s" % (depotPath, destination)
1210         os.makedirs(destination)
1211         os.chdir(destination)
1212         system("git init")
1213         gitdir = os.getcwd() + "/.git"
1214         if not P4Sync.run(self, [depotPath]):
1215             return False
1216         if self.branch != "master":
1217             if gitBranchExists("refs/remotes/p4/master"):
1218                 system("git branch master refs/remotes/p4/master")
1219                 system("git checkout -f")
1220             else:
1221                 print "Could not detect main branch. No checkout/master branch created."
1222         return True
1223
1224 class HelpFormatter(optparse.IndentedHelpFormatter):
1225     def __init__(self):
1226         optparse.IndentedHelpFormatter.__init__(self)
1227
1228     def format_description(self, description):
1229         if description:
1230             return description + "\n"
1231         else:
1232             return ""
1233
1234 def printUsage(commands):
1235     print "usage: %s <command> [options]" % sys.argv[0]
1236     print ""
1237     print "valid commands: %s" % ", ".join(commands)
1238     print ""
1239     print "Try %s <command> --help for command specific help." % sys.argv[0]
1240     print ""
1241
1242 commands = {
1243     "debug" : P4Debug(),
1244     "submit" : P4Submit(),
1245     "sync" : P4Sync(),
1246     "rebase" : P4Rebase(),
1247     "clone" : P4Clone(),
1248     "rollback" : P4RollBack()
1249 }
1250
1251 if len(sys.argv[1:]) == 0:
1252     printUsage(commands.keys())
1253     sys.exit(2)
1254
1255 cmd = ""
1256 cmdName = sys.argv[1]
1257 try:
1258     cmd = commands[cmdName]
1259 except KeyError:
1260     print "unknown command %s" % cmdName
1261     print ""
1262     printUsage(commands.keys())
1263     sys.exit(2)
1264
1265 options = cmd.options
1266 cmd.gitdir = gitdir
1267
1268 args = sys.argv[2:]
1269
1270 if len(options) > 0:
1271     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1272
1273     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1274                                    options,
1275                                    description = cmd.description,
1276                                    formatter = HelpFormatter())
1277
1278     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1279
1280 if cmd.needsGit:
1281     gitdir = cmd.gitdir
1282     if len(gitdir) == 0:
1283         gitdir = ".git"
1284         if not isValidGitDir(gitdir):
1285             gitdir = read_pipe("git rev-parse --git-dir")[:-1]
1286             if os.path.exists(gitdir):
1287                 cdup = read_pipe("git rev-parse --show-cdup")[:-1];
1288                 if len(cdup) > 0:
1289                     os.chdir(cdup);
1290
1291     if not isValidGitDir(gitdir):
1292         if isValidGitDir(gitdir + "/.git"):
1293             gitdir += "/.git"
1294         else:
1295             die("fatal: cannot locate git repository at %s" % gitdir)
1296
1297     os.environ["GIT_DIR"] = gitdir
1298
1299 if not cmd.run(args):
1300     parser.print_help()