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 <hausmann@kde.org>
   6 # Copyright: 2007 Simon Hausmann <hausmann@kde.org>
   7 #            2007 Trolltech ASA
   8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9 #
  10
  11 import optparse, sys, os, marshal, popen2, shelve
  12 import tempfile, getopt, sha, os.path, time
  13 from sets import Set;
  14
  15 gitdir = os.environ.get("GIT_DIR", "")
  16
  17 def p4CmdList(cmd):
  18     cmd = "p4 -G %s" % cmd
  19     pipe = os.popen(cmd, "rb")
  20
  21     result = []
  22     try:
  23         while True:
  24             entry = marshal.load(pipe)
  25             result.append(entry)
  26     except EOFError:
  27         pass
  28     pipe.close()
  29
  30     return result
  31
  32 def p4Cmd(cmd):
  33     list = p4CmdList(cmd)
  34     result = {}
  35     for entry in list:
  36         result.update(entry)
  37     return result;
  38
  39 def p4Where(depotPath):
  40     if not depotPath.endswith("/"):
  41         depotPath += "/"
  42     output = p4Cmd("where %s..." % depotPath)
  43     clientPath = ""
  44     if "path" in output:
  45         clientPath = output.get("path")
  46     elif "data" in output:
  47         data = output.get("data")
  48         lastSpace = data.rfind(" ")
  49         clientPath = data[lastSpace + 1:]
  50
  51     if clientPath.endswith("..."):
  52         clientPath = clientPath[:-3]
  53     return clientPath
  54
  55 def die(msg):
  56     sys.stderr.write(msg + "\n")
  57     sys.exit(1)
  58
  59 def currentGitBranch():
  60     return os.popen("git name-rev HEAD").read().split(" ")[1][:-1]
  61
  62 def isValidGitDir(path):
  63     if os.path.exists(path + "/HEAD") and os.path.exists(path + "/refs") and os.path.exists(path + "/objects"):
  64         return True;
  65     return False
  66
  67 def system(cmd):
  68     if os.system(cmd) != 0:
  69         die("command failed: %s" % cmd)
  70
  71 def extractLogMessageFromGitCommit(commit):
  72     logMessage = ""
  73     foundTitle = False
  74     for log in os.popen("git cat-file commit %s" % commit).readlines():
  75        if not foundTitle:
  76            if len(log) == 1:
  77                foundTitle = 1
  78            continue
  79
  80        logMessage += log
  81     return logMessage
  82
  83 def extractDepotPathAndChangeFromGitLog(log):
  84     values = {}
  85     for line in log.split("\n"):
  86         line = line.strip()
  87         if line.startswith("[git-p4:") and line.endswith("]"):
  88             line = line[8:-1].strip()
  89             for assignment in line.split(":"):
  90                 variable = assignment.strip()
  91                 value = ""
  92                 equalPos = assignment.find("=")
  93                 if equalPos != -1:
  94                     variable = assignment[:equalPos].strip()
  95                     value = assignment[equalPos + 1:].strip()
  96                     if value.startswith("\"") and value.endswith("\""):
  97                         value = value[1:-1]
  98                 values[variable] = value
  99
 100     return values.get("depot-path"), values.get("change")
 101
 102 def gitBranchExists(branch):
 103     if os.system("git rev-parse %s 2>/dev/null >/dev/null" % branch) == 0:
 104         return True
 105     return False
 106
 107 class Command:
 108     def __init__(self):
 109         self.usage = "usage: %prog [options]"
 110         self.needsGit = True
 111
 112 class P4Debug(Command):
 113     def __init__(self):
 114         Command.__init__(self)
 115         self.options = [
 116         ]
 117         self.description = "A tool to debug the output of p4 -G."
 118         self.needsGit = False
 119
 120     def run(self, args):
 121         for output in p4CmdList(" ".join(args)):
 122             print output
 123         return True
 124
 125 class P4CleanTags(Command):
 126     def __init__(self):
 127         Command.__init__(self)
 128         self.options = [
 129 #                optparse.make_option("--branch", dest="branch", default="refs/heads/master")
 130         ]
 131         self.description = "A tool to remove stale unused tags from incremental perforce imports."
 132     def run(self, args):
 133         branch = currentGitBranch()
 134         print "Cleaning out stale p4 import tags..."
 135         sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % branch)
 136         output = sout.read()
 137         try:
 138             tagIdx = output.index(" tags/p4/")
 139         except:
 140             print "Cannot find any p4/* tag. Nothing to do."
 141             sys.exit(0)
 142
 143         try:
 144             caretIdx = output.index("^")
 145         except:
 146             caretIdx = len(output) - 1
 147         rev = int(output[tagIdx + 9 : caretIdx])
 148
 149         allTags = os.popen("git tag -l p4/").readlines()
 150         for i in range(len(allTags)):
 151             allTags[i] = int(allTags[i][3:-1])
 152
 153         allTags.sort()
 154
 155         allTags.remove(rev)
 156
 157         for rev in allTags:
 158             print os.popen("git tag -d p4/%s" % rev).read()
 159
 160         print "%s tags removed." % len(allTags)
 161         return True
 162
 163 class P4Submit(Command):
 164     def __init__(self):
 165         Command.__init__(self)
 166         self.options = [
 167                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 168                 optparse.make_option("--origin", dest="origin"),
 169                 optparse.make_option("--reset", action="store_true", dest="reset"),
 170                 optparse.make_option("--log-substitutions", dest="substFile"),
 171                 optparse.make_option("--noninteractive", action="store_false"),
 172                 optparse.make_option("--dry-run", action="store_true"),
 173                 optparse.make_option("--apply-as-patch", action="store_true", dest="applyAsPatch")
 174         ]
 175         self.description = "Submit changes from git to the perforce depot."
 176         self.usage += " [name of git branch to submit into perforce depot]"
 177         self.firstTime = True
 178         self.reset = False
 179         self.interactive = True
 180         self.dryRun = False
 181         self.substFile = ""
 182         self.firstTime = True
 183         self.origin = ""
 184         self.applyAsPatch = True
 185
 186         self.logSubstitutions = {}
 187         self.logSubstitutions["<enter description here>"] = "%log%"
 188         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 189
 190     def check(self):
 191         if len(p4CmdList("opened ...")) > 0:
 192             die("You have files opened with perforce! Close them before starting the sync.")
 193
 194     def start(self):
 195         if len(self.config) > 0 and not self.reset:
 196             die("Cannot start sync. Previous sync config found at %s" % self.configFile)
 197
 198         commits = []
 199         for line in os.popen("git rev-list --no-merges %s..%s" % (self.origin, self.master)).readlines():
 200             commits.append(line[:-1])
 201         commits.reverse()
 202
 203         self.config["commits"] = commits
 204
 205         if not self.applyAsPatch:
 206             print "Creating temporary p4-sync branch from %s ..." % self.origin
 207             system("git checkout -f -b p4-sync %s" % self.origin)
 208
 209     def prepareLogMessage(self, template, message):
 210         result = ""
 211
 212         for line in template.split("\n"):
 213             if line.startswith("#"):
 214                 result += line + "\n"
 215                 continue
 216
 217             substituted = False
 218             for key in self.logSubstitutions.keys():
 219                 if line.find(key) != -1:
 220                     value = self.logSubstitutions[key]
 221                     value = value.replace("%log%", message)
 222                     if value != "@remove@":
 223                         result += line.replace(key, value) + "\n"
 224                     substituted = True
 225                     break
 226
 227             if not substituted:
 228                 result += line + "\n"
 229
 230         return result
 231
 232     def apply(self, id):
 233         print "Applying %s" % (os.popen("git log --max-count=1 --pretty=oneline %s" % id).read())
 234         diff = os.popen("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id)).readlines()
 235         filesToAdd = set()
 236         filesToDelete = set()
 237         for line in diff:
 238             modifier = line[0]
 239             path = line[1:].strip()
 240             if modifier == "M":
 241                 system("p4 edit %s" % path)
 242             elif modifier == "A":
 243                 filesToAdd.add(path)
 244                 if path in filesToDelete:
 245                     filesToDelete.remove(path)
 246             elif modifier == "D":
 247                 filesToDelete.add(path)
 248                 if path in filesToAdd:
 249                     filesToAdd.remove(path)
 250             else:
 251                 die("unknown modifier %s for %s" % (modifier, path))
 252
 253         if self.applyAsPatch:
 254             system("git diff-tree -p --diff-filter=ACMRTUXB \"%s^\" \"%s\" | patch -p1" % (id, id))
 255         else:
 256             system("git diff-files --name-only -z | git update-index --remove -z --stdin")
 257             system("git cherry-pick --no-commit \"%s\"" % id)
 258
 259         for f in filesToAdd:
 260             system("p4 add %s" % f)
 261         for f in filesToDelete:
 262             system("p4 revert %s" % f)
 263             system("p4 delete %s" % f)
 264
 265         logMessage = extractLogMessageFromGitCommit(id)
 266         logMessage = logMessage.replace("\n", "\n\t")
 267         logMessage = logMessage[:-1]
 268
 269         template = os.popen("p4 change -o").read()
 270
 271         if self.interactive:
 272             submitTemplate = self.prepareLogMessage(template, logMessage)
 273             diff = os.popen("p4 diff -du ...").read()
 274
 275             for newFile in filesToAdd:
 276                 diff += "==== new file ====\n"
 277                 diff += "--- /dev/null\n"
 278                 diff += "+++ %s\n" % newFile
 279                 f = open(newFile, "r")
 280                 for line in f.readlines():
 281                     diff += "+" + line
 282                 f.close()
 283
 284             separatorLine = "######## everything below this line is just the diff #######\n"
 285
 286             response = "e"
 287             firstIteration = True
 288             while response == "e":
 289                 if not firstIteration:
 290                     response = raw_input("Do you want to submit this change (y/e/n)? ")
 291                 firstIteration = False
 292                 if response == "e":
 293                     [handle, fileName] = tempfile.mkstemp()
 294                     tmpFile = os.fdopen(handle, "w+")
 295                     tmpFile.write(submitTemplate + separatorLine + diff)
 296                     tmpFile.close()
 297                     editor = os.environ.get("EDITOR", "vi")
 298                     system(editor + " " + fileName)
 299                     tmpFile = open(fileName, "r")
 300                     message = tmpFile.read()
 301                     tmpFile.close()
 302                     os.remove(fileName)
 303                     submitTemplate = message[:message.index(separatorLine)]
 304
 305             if response == "y" or response == "yes":
 306                if self.dryRun:
 307                    print submitTemplate
 308                    raw_input("Press return to continue...")
 309                else:
 310                     pipe = os.popen("p4 submit -i", "w")
 311                     pipe.write(submitTemplate)
 312                     pipe.close()
 313             else:
 314                 print "Not submitting!"
 315                 self.interactive = False
 316         else:
 317             fileName = "submit.txt"
 318             file = open(fileName, "w+")
 319             file.write(self.prepareLogMessage(template, logMessage))
 320             file.close()
 321             print "Perforce submit template written as %s. Please review/edit and then use p4 submit -i < %s to submit directly!" % (fileName, fileName)
 322
 323     def run(self, args):
 324         global gitdir
 325         # make gitdir absolute so we can cd out into the perforce checkout
 326         gitdir = os.path.abspath(gitdir)
 327         os.environ["GIT_DIR"] = gitdir
 328
 329         if len(args) == 0:
 330             self.master = currentGitBranch()
 331             if len(self.master) == 0 or not os.path.exists("%s/refs/heads/%s" % (gitdir, self.master)):
 332                 die("Detecting current git branch failed!")
 333         elif len(args) == 1:
 334             self.master = args[0]
 335         else:
 336             return False
 337
 338         depotPath = ""
 339         if gitBranchExists("p4"):
 340             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("p4"))
 341         if len(depotPath) == 0 and gitBranchExists("origin"):
 342             [depotPath, dummy] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit("origin"))
 343
 344         if len(depotPath) == 0:
 345             print "Internal error: cannot locate perforce depot path from existing branches"
 346             sys.exit(128)
 347
 348         clientPath = p4Where(depotPath)
 349
 350         if len(clientPath) == 0:
 351             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
 352             sys.exit(128)
 353
 354         print "Perforce checkout for depot path %s located at %s" % (depotPath, clientPath)
 355         oldWorkingDirectory = os.getcwd()
 356         os.chdir(clientPath)
 357         response = raw_input("Do you want to sync %s with p4 sync? (y/n) " % clientPath)
 358         if response == "y" or response == "yes":
 359             system("p4 sync ...")
 360
 361         if len(self.origin) == 0:
 362             if gitBranchExists("p4"):
 363                 self.origin = "p4"
 364             else:
 365                 self.origin = "origin"
 366
 367         if self.reset:
 368             self.firstTime = True
 369
 370         if len(self.substFile) > 0:
 371             for line in open(self.substFile, "r").readlines():
 372                 tokens = line[:-1].split("=")
 373                 self.logSubstitutions[tokens[0]] = tokens[1]
 374
 375         self.check()
 376         self.configFile = gitdir + "/p4-git-sync.cfg"
 377         self.config = shelve.open(self.configFile, writeback=True)
 378
 379         if self.firstTime:
 380             self.start()
 381
 382         commits = self.config.get("commits", [])
 383
 384         while len(commits) > 0:
 385             self.firstTime = False
 386             commit = commits[0]
 387             commits = commits[1:]
 388             self.config["commits"] = commits
 389             self.apply(commit)
 390             if not self.interactive:
 391                 break
 392
 393         self.config.close()
 394
 395         if len(commits) == 0:
 396             if self.firstTime:
 397                 print "No changes found to apply between %s and current HEAD" % self.origin
 398             else:
 399                 print "All changes applied!"
 400                 if not self.applyAsPatch:
 401                     print "Deleting temporary p4-sync branch and going back to %s" % self.master
 402                     system("git checkout %s" % self.master)
 403                     system("git branch -D p4-sync")
 404                     print "Cleaning out your perforce checkout by doing p4 edit ... ; p4 revert ..."
 405                     system("p4 edit ... >/dev/null")
 406                     system("p4 revert ... >/dev/null")
 407                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase (y/n)? ")
 408                 if response == "y" or response == "yes":
 409                     os.chdir(oldWorkingDirectory)
 410                     rebase = P4Rebase()
 411                     rebase.run([])
 412             os.remove(self.configFile)
 413
 414         return True
 415
 416 class P4Sync(Command):
 417     def __init__(self):
 418         Command.__init__(self)
 419         self.options = [
 420                 optparse.make_option("--branch", dest="branch"),
 421                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 422                 optparse.make_option("--changesfile", dest="changesFile"),
 423                 optparse.make_option("--silent", dest="silent", action="store_true"),
 424                 optparse.make_option("--known-branches", dest="knownBranches"),
 425                 optparse.make_option("--data-cache", dest="dataCache", action="store_true"),
 426                 optparse.make_option("--command-cache", dest="commandCache", action="store_true"),
 427                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true")
 428         ]
 429         self.description = """Imports from Perforce into a git repository.\n
 430     example:
 431     //depot/my/project/ -- to import the current head
 432     //depot/my/project/@all -- to import everything
 433     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 434
 435     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 436
 437         self.usage += " //depot/path[@revRange]"
 438
 439         self.dataCache = False
 440         self.commandCache = False
 441         self.silent = False
 442         self.knownBranches = Set()
 443         self.createdBranches = Set()
 444         self.committedChanges = Set()
 445         self.branch = ""
 446         self.detectBranches = False
 447         self.detectLabels = False
 448         self.changesFile = ""
 449         self.tagLastChange = True
 450
 451     def p4File(self, depotPath):
 452         return os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 453
 454     def extractFilesFromCommit(self, commit):
 455         files = []
 456         fnum = 0
 457         while commit.has_key("depotFile%s" % fnum):
 458             path =  commit["depotFile%s" % fnum]
 459             if not path.startswith(self.globalPrefix):
 460     #            if not self.silent:
 461     #                print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, self.globalPrefix, change)
 462                 fnum = fnum + 1
 463                 continue
 464
 465             file = {}
 466             file["path"] = path
 467             file["rev"] = commit["rev%s" % fnum]
 468             file["action"] = commit["action%s" % fnum]
 469             file["type"] = commit["type%s" % fnum]
 470             files.append(file)
 471             fnum = fnum + 1
 472         return files
 473
 474     def isSubPathOf(self, first, second):
 475         if not first.startswith(second):
 476             return False
 477         if first == second:
 478             return True
 479         return first[len(second)] == "/"
 480
 481     def branchesForCommit(self, files):
 482         branches = Set()
 483
 484         for file in files:
 485             relativePath = file["path"][len(self.globalPrefix):]
 486             # strip off the filename
 487             relativePath = relativePath[0:relativePath.rfind("/")]
 488
 489     #        if len(branches) == 0:
 490     #            branches.add(relativePath)
 491     #            knownBranches.add(relativePath)
 492     #            continue
 493
 494             ###### this needs more testing :)
 495             knownBranch = False
 496             for branch in branches:
 497                 if relativePath == branch:
 498                     knownBranch = True
 499                     break
 500     #            if relativePath.startswith(branch):
 501                 if self.isSubPathOf(relativePath, branch):
 502                     knownBranch = True
 503                     break
 504     #            if branch.startswith(relativePath):
 505                 if self.isSubPathOf(branch, relativePath):
 506                     branches.remove(branch)
 507                     break
 508
 509             if knownBranch:
 510                 continue
 511
 512             for branch in self.knownBranches:
 513                 #if relativePath.startswith(branch):
 514                 if self.isSubPathOf(relativePath, branch):
 515                     if len(branches) == 0:
 516                         relativePath = branch
 517                     else:
 518                         knownBranch = True
 519                     break
 520
 521             if knownBranch:
 522                 continue
 523
 524             branches.add(relativePath)
 525             self.knownBranches.add(relativePath)
 526
 527         return branches
 528
 529     def findBranchParent(self, branchPrefix, files):
 530         for file in files:
 531             path = file["path"]
 532             if not path.startswith(branchPrefix):
 533                 continue
 534             action = file["action"]
 535             if action != "integrate" and action != "branch":
 536                 continue
 537             rev = file["rev"]
 538             depotPath = path + "#" + rev
 539
 540             log = p4CmdList("filelog \"%s\"" % depotPath)
 541             if len(log) != 1:
 542                 print "eek! I got confused by the filelog of %s" % depotPath
 543                 sys.exit(1);
 544
 545             log = log[0]
 546             if log["action0"] != action:
 547                 print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 548                 sys.exit(1);
 549
 550             branchAction = log["how0,0"]
 551     #        if branchAction == "branch into" or branchAction == "ignored":
 552     #            continue # ignore for branching
 553
 554             if not branchAction.endswith(" from"):
 555                 continue # ignore for branching
 556     #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 557     #            sys.exit(1);
 558
 559             source = log["file0,0"]
 560             if source.startswith(branchPrefix):
 561                 continue
 562
 563             lastSourceRev = log["erev0,0"]
 564
 565             sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 566             if len(sourceLog) != 1:
 567                 print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 568                 sys.exit(1);
 569             sourceLog = sourceLog[0]
 570
 571             relPath = source[len(self.globalPrefix):]
 572             # strip off the filename
 573             relPath = relPath[0:relPath.rfind("/")]
 574
 575             for branch in self.knownBranches:
 576                 if self.isSubPathOf(relPath, branch):
 577     #                print "determined parent branch branch %s due to change in file %s" % (branch, source)
 578                     return branch
 579     #            else:
 580     #                print "%s is not a subpath of branch %s" % (relPath, branch)
 581
 582         return ""
 583
 584     def commit(self, details, files, branch, branchPrefix, parent = "", merged = ""):
 585         epoch = details["time"]
 586         author = details["user"]
 587
 588         self.gitStream.write("commit %s\n" % branch)
 589     #    gitStream.write("mark :%s\n" % details["change"])
 590         self.committedChanges.add(int(details["change"]))
 591         committer = ""
 592         if author in self.users:
 593             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
 594         else:
 595             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
 596
 597         self.gitStream.write("committer %s\n" % committer)
 598
 599         self.gitStream.write("data <<EOT\n")
 600         self.gitStream.write(details["desc"])
 601         self.gitStream.write("\n[git-p4: depot-path = \"%s\": change = %s]\n" % (branchPrefix, details["change"]))
 602         self.gitStream.write("EOT\n\n")
 603
 604         if len(parent) > 0:
 605             self.gitStream.write("from %s\n" % parent)
 606
 607         if len(merged) > 0:
 608             self.gitStream.write("merge %s\n" % merged)
 609
 610         for file in files:
 611             path = file["path"]
 612             if not path.startswith(branchPrefix):
 613     #            if not silent:
 614     #                print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
 615                 continue
 616             rev = file["rev"]
 617             depotPath = path + "#" + rev
 618             relPath = path[len(branchPrefix):]
 619             action = file["action"]
 620
 621             if file["type"] == "apple":
 622                 print "\nfile %s is a strange apple file that forks. Ignoring!" % path
 623                 continue
 624
 625             if action == "delete":
 626                 self.gitStream.write("D %s\n" % relPath)
 627             else:
 628                 mode = 644
 629                 if file["type"].startswith("x"):
 630                     mode = 755
 631
 632                 data = self.p4File(depotPath)
 633
 634                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
 635                 self.gitStream.write("data %s\n" % len(data))
 636                 self.gitStream.write(data)
 637                 self.gitStream.write("\n")
 638
 639         self.gitStream.write("\n")
 640
 641         change = int(details["change"])
 642
 643         self.lastChange = change
 644
 645         if change in self.labels:
 646             label = self.labels[change]
 647             labelDetails = label[0]
 648             labelRevisions = label[1]
 649
 650             files = p4CmdList("files %s...@%s" % (branchPrefix, change))
 651
 652             if len(files) == len(labelRevisions):
 653
 654                 cleanedFiles = {}
 655                 for info in files:
 656                     if info["action"] == "delete":
 657                         continue
 658                     cleanedFiles[info["depotFile"]] = info["rev"]
 659
 660                 if cleanedFiles == labelRevisions:
 661                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
 662                     self.gitStream.write("from %s\n" % branch)
 663
 664                     owner = labelDetails["Owner"]
 665                     tagger = ""
 666                     if author in self.users:
 667                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
 668                     else:
 669                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
 670                     self.gitStream.write("tagger %s\n" % tagger)
 671                     self.gitStream.write("data <<EOT\n")
 672                     self.gitStream.write(labelDetails["Description"])
 673                     self.gitStream.write("EOT\n\n")
 674
 675                 else:
 676                     if not self.silent:
 677                         print "Tag %s does not match with change %s: files do not match." % (labelDetails["label"], change)
 678
 679             else:
 680                 if not self.silent:
 681                     print "Tag %s does not match with change %s: file count is different." % (labelDetails["label"], change)
 682
 683     def extractFilesInCommitToBranch(self, files, branchPrefix):
 684         newFiles = []
 685
 686         for file in files:
 687             path = file["path"]
 688             if path.startswith(branchPrefix):
 689                 newFiles.append(file)
 690
 691         return newFiles
 692
 693     def findBranchSourceHeuristic(self, files, branch, branchPrefix):
 694         for file in files:
 695             action = file["action"]
 696             if action != "integrate" and action != "branch":
 697                 continue
 698             path = file["path"]
 699             rev = file["rev"]
 700             depotPath = path + "#" + rev
 701
 702             log = p4CmdList("filelog \"%s\"" % depotPath)
 703             if len(log) != 1:
 704                 print "eek! I got confused by the filelog of %s" % depotPath
 705                 sys.exit(1);
 706
 707             log = log[0]
 708             if log["action0"] != action:
 709                 print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
 710                 sys.exit(1);
 711
 712             branchAction = log["how0,0"]
 713
 714             if not branchAction.endswith(" from"):
 715                 continue # ignore for branching
 716     #            print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
 717     #            sys.exit(1);
 718
 719             source = log["file0,0"]
 720             if source.startswith(branchPrefix):
 721                 continue
 722
 723             lastSourceRev = log["erev0,0"]
 724
 725             sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
 726             if len(sourceLog) != 1:
 727                 print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
 728                 sys.exit(1);
 729             sourceLog = sourceLog[0]
 730
 731             relPath = source[len(self.globalPrefix):]
 732             # strip off the filename
 733             relPath = relPath[0:relPath.rfind("/")]
 734
 735             for candidate in self.knownBranches:
 736                 if self.isSubPathOf(relPath, candidate) and candidate != branch:
 737                     return candidate
 738
 739         return ""
 740
 741     def changeIsBranchMerge(self, sourceBranch, destinationBranch, change):
 742         sourceFiles = {}
 743         for file in p4CmdList("files %s...@%s" % (self.globalPrefix + sourceBranch + "/", change)):
 744             if file["action"] == "delete":
 745                 continue
 746             sourceFiles[file["depotFile"]] = file
 747
 748         destinationFiles = {}
 749         for file in p4CmdList("files %s...@%s" % (self.globalPrefix + destinationBranch + "/", change)):
 750             destinationFiles[file["depotFile"]] = file
 751
 752         for fileName in sourceFiles.keys():
 753             integrations = []
 754             deleted = False
 755             integrationCount = 0
 756             for integration in p4CmdList("integrated \"%s\"" % fileName):
 757                 toFile = integration["fromFile"] # yes, it's true, it's fromFile
 758                 if not toFile in destinationFiles:
 759                     continue
 760                 destFile = destinationFiles[toFile]
 761                 if destFile["action"] == "delete":
 762     #                print "file %s has been deleted in %s" % (fileName, toFile)
 763                     deleted = True
 764                     break
 765                 integrationCount += 1
 766                 if integration["how"] == "branch from":
 767                     continue
 768
 769                 if int(integration["change"]) == change:
 770                     integrations.append(integration)
 771                     continue
 772                 if int(integration["change"]) > change:
 773                     continue
 774
 775                 destRev = int(destFile["rev"])
 776
 777                 startRev = integration["startFromRev"][1:]
 778                 if startRev == "none":
 779                     startRev = 0
 780                 else:
 781                     startRev = int(startRev)
 782
 783                 endRev = integration["endFromRev"][1:]
 784                 if endRev == "none":
 785                     endRev = 0
 786                 else:
 787                     endRev = int(endRev)
 788
 789                 initialBranch = (destRev == 1 and integration["how"] != "branch into")
 790                 inRange = (destRev >= startRev and destRev <= endRev)
 791                 newer = (destRev > startRev and destRev > endRev)
 792
 793                 if initialBranch or inRange or newer:
 794                     integrations.append(integration)
 795
 796             if deleted:
 797                 continue
 798
 799             if len(integrations) == 0 and integrationCount > 1:
 800                 print "file %s was not integrated from %s into %s" % (fileName, sourceBranch, destinationBranch)
 801                 return False
 802
 803         return True
 804
 805     def getUserMap(self):
 806         self.users = {}
 807
 808         for output in p4CmdList("users"):
 809             if not output.has_key("User"):
 810                 continue
 811             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 812
 813     def getLabels(self):
 814         self.labels = {}
 815
 816         l = p4CmdList("labels %s..." % self.globalPrefix)
 817         if len(l) > 0 and not self.silent:
 818             print "Finding files belonging to labels in %s" % self.globalPrefix
 819
 820         for output in l:
 821             label = output["label"]
 822             revisions = {}
 823             newestChange = 0
 824             for file in p4CmdList("files //...@%s" % label):
 825                 revisions[file["depotFile"]] = file["rev"]
 826                 change = int(file["change"])
 827                 if change > newestChange:
 828                     newestChange = change
 829
 830             self.labels[newestChange] = [output, revisions]
 831
 832     def run(self, args):
 833         self.globalPrefix = ""
 834         self.changeRange = ""
 835         self.initialParent = ""
 836
 837         if len(self.branch) == 0:
 838             self.branch = "p4"
 839
 840         if len(args) == 0:
 841             if not gitBranchExists(self.branch) and gitBranchExists("origin"):
 842                 if not self.silent:
 843                     print "Creating %s branch in git repository based on origin" % self.branch
 844                 system("git branch %s origin" % self.branch)
 845
 846             [self.previousDepotPath, p4Change] = extractDepotPathAndChangeFromGitLog(extractLogMessageFromGitCommit(self.branch))
 847             if len(self.previousDepotPath) > 0 and len(p4Change) > 0:
 848                 p4Change = int(p4Change) + 1
 849                 self.globalPrefix = self.previousDepotPath
 850                 self.changeRange = "@%s,#head" % p4Change
 851                 self.initialParent = self.branch
 852                 self.tagLastChange = False
 853                 if not self.silent:
 854                     print "Performing incremental import into %s git branch" % self.branch
 855
 856         self.branch = "refs/heads/" + self.branch
 857
 858         if len(self.globalPrefix) == 0:
 859             self.globalPrefix = self.previousDepotPath = os.popen("git repo-config --get p4.depotpath").read()
 860
 861         if len(self.globalPrefix) != 0:
 862             self.globalPrefix = self.globalPrefix[:-1]
 863
 864         if len(args) == 0 and len(self.globalPrefix) != 0:
 865             if not self.silent:
 866                 print "Depot path: %s" % self.globalPrefix
 867         elif len(args) != 1:
 868             return False
 869         else:
 870             if len(self.globalPrefix) != 0 and self.globalPrefix != args[0]:
 871                 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (self.globalPrefix, args[0])
 872                 sys.exit(1)
 873             self.globalPrefix = args[0]
 874
 875         self.revision = ""
 876         self.users = {}
 877         self.lastChange = 0
 878         self.initialTag = ""
 879
 880         if self.globalPrefix.find("@") != -1:
 881             atIdx = self.globalPrefix.index("@")
 882             self.changeRange = self.globalPrefix[atIdx:]
 883             if self.changeRange == "@all":
 884                 self.changeRange = ""
 885             elif self.changeRange.find(",") == -1:
 886                 self.revision = self.changeRange
 887                 self.changeRange = ""
 888             self.globalPrefix = self.globalPrefix[0:atIdx]
 889         elif self.globalPrefix.find("#") != -1:
 890             hashIdx = self.globalPrefix.index("#")
 891             self.revision = self.globalPrefix[hashIdx:]
 892             self.globalPrefix = self.globalPrefix[0:hashIdx]
 893         elif len(self.previousDepotPath) == 0:
 894             self.revision = "#head"
 895
 896         if self.globalPrefix.endswith("..."):
 897             self.globalPrefix = self.globalPrefix[:-3]
 898
 899         if not self.globalPrefix.endswith("/"):
 900             self.globalPrefix += "/"
 901
 902         self.getUserMap()
 903         self.labels = {}
 904         if self.detectLabels:
 905             self.getLabels();
 906
 907         if len(self.changeRange) == 0:
 908             try:
 909                 sout, sin, serr = popen2.popen3("git name-rev --tags `git rev-parse %s`" % self.branch)
 910                 output = sout.read()
 911                 if output.endswith("\n"):
 912                     output = output[:-1]
 913                 tagIdx = output.index(" tags/p4/")
 914                 caretIdx = output.find("^")
 915                 endPos = len(output)
 916                 if caretIdx != -1:
 917                     endPos = caretIdx
 918                 self.rev = int(output[tagIdx + 9 : endPos]) + 1
 919                 self.changeRange = "@%s,#head" % self.rev
 920                 self.initialParent = os.popen("git rev-parse %s" % self.branch).read()[:-1]
 921                 self.initialTag = "p4/%s" % (int(self.rev) - 1)
 922             except:
 923                 pass
 924
 925         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
 926
 927         self.gitOutput, self.gitStream, self.gitError = popen2.popen3("git fast-import")
 928
 929         if len(self.revision) > 0:
 930             print "Doing initial import of %s from revision %s" % (self.globalPrefix, self.revision)
 931
 932             details = { "user" : "git perforce import user", "time" : int(time.time()) }
 933             details["desc"] = "Initial import of %s from the state at revision %s" % (self.globalPrefix, self.revision)
 934             details["change"] = self.revision
 935             newestRevision = 0
 936
 937             fileCnt = 0
 938             for info in p4CmdList("files %s...%s" % (self.globalPrefix, self.revision)):
 939                 change = int(info["change"])
 940                 if change > newestRevision:
 941                     newestRevision = change
 942
 943                 if info["action"] == "delete":
 944                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
 945                     #fileCnt = fileCnt + 1
 946                     continue
 947
 948                 for prop in [ "depotFile", "rev", "action", "type" ]:
 949                     details["%s%s" % (prop, fileCnt)] = info[prop]
 950
 951                 fileCnt = fileCnt + 1
 952
 953             details["change"] = newestRevision
 954
 955             try:
 956                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.globalPrefix)
 957             except IOError:
 958                 print "IO error with git fast-import. Is your git version recent enough?"
 959                 print self.gitError.read()
 960
 961         else:
 962             changes = []
 963
 964             if len(self.changesFile) > 0:
 965                 output = open(self.changesFile).readlines()
 966                 changeSet = Set()
 967                 for line in output:
 968                     changeSet.add(int(line))
 969
 970                 for change in changeSet:
 971                     changes.append(change)
 972
 973                 changes.sort()
 974             else:
 975                 output = os.popen("p4 changes %s...%s" % (self.globalPrefix, self.changeRange)).readlines()
 976
 977                 for line in output:
 978                     changeNum = line.split(" ")[1]
 979                     changes.append(changeNum)
 980
 981                 changes.reverse()
 982
 983             if len(changes) == 0:
 984                 if not self.silent:
 985                     print "no changes to import!"
 986                 return True
 987
 988             cnt = 1
 989             for change in changes:
 990                 description = p4Cmd("describe %s" % change)
 991
 992                 if not self.silent:
 993                     sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 994                     sys.stdout.flush()
 995                 cnt = cnt + 1
 996
 997                 try:
 998                     files = self.extractFilesFromCommit(description)
 999                     if self.detectBranches:
1000                         for branch in self.branchesForCommit(files):
1001                             self.knownBranches.add(branch)
1002                             branchPrefix = self.globalPrefix + branch + "/"
1003
1004                             filesForCommit = self.extractFilesInCommitToBranch(files, branchPrefix)
1005
1006                             merged = ""
1007                             parent = ""
1008                             ########### remove cnt!!!
1009                             if branch not in self.createdBranches and cnt > 2:
1010                                 self.createdBranches.add(branch)
1011                                 parent = self.findBranchParent(branchPrefix, files)
1012                                 if parent == branch:
1013                                     parent = ""
1014             #                    elif len(parent) > 0:
1015             #                        print "%s branched off of %s" % (branch, parent)
1016
1017                             if len(parent) == 0:
1018                                 merged = self.findBranchSourceHeuristic(filesForCommit, branch, branchPrefix)
1019                                 if len(merged) > 0:
1020                                     print "change %s could be a merge from %s into %s" % (description["change"], merged, branch)
1021                                     if not self.changeIsBranchMerge(merged, branch, int(description["change"])):
1022                                         merged = ""
1023
1024                             branch = "refs/heads/" + branch
1025                             if len(parent) > 0:
1026                                 parent = "refs/heads/" + parent
1027                             if len(merged) > 0:
1028                                 merged = "refs/heads/" + merged
1029                             self.commit(description, files, branch, branchPrefix, parent, merged)
1030                     else:
1031                         self.commit(description, files, self.branch, self.globalPrefix, self.initialParent)
1032                         self.initialParent = ""
1033                 except IOError:
1034                     print self.gitError.read()
1035                     sys.exit(1)
1036
1037         if not self.silent:
1038             print ""
1039
1040         if self.tagLastChange:
1041             self.gitStream.write("reset refs/tags/p4/%s\n" % self.lastChange)
1042             self.gitStream.write("from %s\n\n" % self.branch);
1043
1044
1045         self.gitStream.close()
1046         self.gitOutput.close()
1047         self.gitError.close()
1048
1049         os.popen("git repo-config p4.depotpath %s" % self.globalPrefix).read()
1050         if len(self.initialTag) > 0:
1051             os.popen("git tag -d %s" % self.initialTag).read()
1052
1053         return True
1054
1055 class P4Rebase(Command):
1056     def __init__(self):
1057         Command.__init__(self)
1058         self.options = [ ]
1059         self.description = "Fetches the latest revision from perforce and rebases the current work (branch) against it"
1060
1061     def run(self, args):
1062         sync = P4Sync()
1063         sync.run([])
1064         print "Rebasing the current branch"
1065         oldHead = os.popen("git rev-parse HEAD").read()[:-1]
1066         system("git rebase p4")
1067         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1068         return True
1069
1070 class P4Clone(P4Sync):
1071     def __init__(self):
1072         P4Sync.__init__(self)
1073         self.description = "Creates a new git repository and imports from Perforce into it"
1074         self.usage = "usage: %prog [options] //depot/path[@revRange] [directory]"
1075         self.needsGit = False
1076         self.tagLastChange = False
1077
1078     def run(self, args):
1079         if len(args) < 1:
1080             return False
1081         depotPath = args[0]
1082         dir = ""
1083         if len(args) == 2:
1084             dir = args[1]
1085         elif len(args) > 2:
1086             return False
1087
1088         if not depotPath.startswith("//"):
1089             return False
1090
1091         if len(dir) == 0:
1092             dir = depotPath
1093             atPos = dir.rfind("@")
1094             if atPos != -1:
1095                 dir = dir[0:atPos]
1096             hashPos = dir.rfind("#")
1097             if hashPos != -1:
1098                 dir = dir[0:hashPos]
1099
1100             if dir.endswith("..."):
1101                 dir = dir[:-3]
1102
1103             if dir.endswith("/"):
1104                dir = dir[:-1]
1105
1106             slashPos = dir.rfind("/")
1107             if slashPos != -1:
1108                 dir = dir[slashPos + 1:]
1109
1110         print "Importing from %s into %s" % (depotPath, dir)
1111         os.makedirs(dir)
1112         os.chdir(dir)
1113         system("git init")
1114         if not P4Sync.run(self, [depotPath]):
1115             return False
1116         os.wait()
1117         if self.branch != "master":
1118             system("git branch master p4")
1119             system("git checkout -f")
1120         return True
1121
1122 class HelpFormatter(optparse.IndentedHelpFormatter):
1123     def __init__(self):
1124         optparse.IndentedHelpFormatter.__init__(self)
1125
1126     def format_description(self, description):
1127         if description:
1128             return description + "\n"
1129         else:
1130             return ""
1131
1132 def printUsage(commands):
1133     print "usage: %s <command> [options]" % sys.argv[0]
1134     print ""
1135     print "valid commands: %s" % ", ".join(commands)
1136     print ""
1137     print "Try %s <command> --help for command specific help." % sys.argv[0]
1138     print ""
1139
1140 commands = {
1141     "debug" : P4Debug(),
1142     "clean-tags" : P4CleanTags(),
1143     "submit" : P4Submit(),
1144     "sync" : P4Sync(),
1145     "rebase" : P4Rebase(),
1146     "clone" : P4Clone()
1147 }
1148
1149 if len(sys.argv[1:]) == 0:
1150     printUsage(commands.keys())
1151     sys.exit(2)
1152
1153 cmd = ""
1154 cmdName = sys.argv[1]
1155 try:
1156     cmd = commands[cmdName]
1157 except KeyError:
1158     print "unknown command %s" % cmdName
1159     print ""
1160     printUsage(commands.keys())
1161     sys.exit(2)
1162
1163 options = cmd.options
1164 cmd.gitdir = gitdir
1165
1166 args = sys.argv[2:]
1167
1168 if len(options) > 0:
1169     options.append(optparse.make_option("--git-dir", dest="gitdir"))
1170
1171     parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1172                                    options,
1173                                    description = cmd.description,
1174                                    formatter = HelpFormatter())
1175
1176     (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1177
1178 if cmd.needsGit:
1179     gitdir = cmd.gitdir
1180     if len(gitdir) == 0:
1181         gitdir = ".git"
1182         if not isValidGitDir(gitdir):
1183             cdup = os.popen("git rev-parse --show-cdup").read()[:-1]
1184             if isValidGitDir(cdup + "/" + gitdir):
1185                 os.chdir(cdup)
1186
1187     if not isValidGitDir(gitdir):
1188         if isValidGitDir(gitdir + "/.git"):
1189             gitdir += "/.git"
1190         else:
1191             die("fatal: cannot locate git repository at %s" % gitdir)
1192
1193     os.environ["GIT_DIR"] = gitdir
1194
1195 if not cmd.run(args):
1196     parser.print_help()
1197