contrib/fast-import/git-p4

   1 #!/usr/bin/env python
   2 #
   3 # git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
   4 #
   5 # Author: Simon Hausmann <simon@lst.de>
   6 # Copyright: 2007 Simon Hausmann <simon@lst.de>
   7 #            2007 Trolltech ASA
   8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   9 #
  10
  11 import optparse, sys, os, marshal, popen2, subprocess, shelve
  12 import tempfile, getopt, sha, os.path, time, platform
  13 import re
  14
  15 from sets import Set;
  16
  17 verbose = False
  18
  19 def die(msg):
  20     if verbose:
  21         raise Exception(msg)
  22     else:
  23         sys.stderr.write(msg + "\n")
  24         sys.exit(1)
  25
  26 def write_pipe(c, str):
  27     if verbose:
  28         sys.stderr.write('Writing pipe: %s\n' % c)
  29
  30     pipe = os.popen(c, 'w')
  31     val = pipe.write(str)
  32     if pipe.close():
  33         die('Command failed: %s' % c)
  34
  35     return val
  36
  37 def read_pipe(c, ignore_error=False):
  38     if verbose:
  39         sys.stderr.write('Reading pipe: %s\n' % c)
  40
  41     pipe = os.popen(c, 'rb')
  42     val = pipe.read()
  43     if pipe.close() and not ignore_error:
  44         die('Command failed: %s' % c)
  45
  46     return val
  47
  48
  49 def read_pipe_lines(c):
  50     if verbose:
  51         sys.stderr.write('Reading pipe: %s\n' % c)
  52     ## todo: check return status
  53     pipe = os.popen(c, 'rb')
  54     val = pipe.readlines()
  55     if pipe.close():
  56         die('Command failed: %s' % c)
  57
  58     return val
  59
  60 def system(cmd):
  61     if verbose:
  62         sys.stderr.write("executing %s\n" % cmd)
  63     if os.system(cmd) != 0:
  64         die("command failed: %s" % cmd)
  65
  66 def isP4Exec(kind):
  67     """Determine if a Perforce 'kind' should have execute permission
  68
  69     'p4 help filetypes' gives a list of the types.  If it starts with 'x',
  70     or x follows one of a few letters.  Otherwise, if there is an 'x' after
  71     a plus sign, it is also executable"""
  72     return (re.search(r"(^[cku]?x)|\+.*x", kind) != None)
  73
  74 def setP4ExecBit(file, mode):
  75     # Reopens an already open file and changes the execute bit to match
  76     # the execute bit setting in the passed in mode.
  77
  78     p4Type = "+x"
  79
  80     if not isModeExec(mode):
  81         p4Type = getP4OpenedType(file)
  82         p4Type = re.sub('^([cku]?)x(.*)', '\\1\\2', p4Type)
  83         p4Type = re.sub('(.*?\+.*?)x(.*?)', '\\1\\2', p4Type)
  84         if p4Type[-1] == "+":
  85             p4Type = p4Type[0:-1]
  86
  87     system("p4 reopen -t %s %s" % (p4Type, file))
  88
  89 def getP4OpenedType(file):
  90     # Returns the perforce file type for the given file.
  91
  92     result = read_pipe("p4 opened %s" % file)
  93     match = re.match(".*\((.+)\)$", result)
  94     if match:
  95         return match.group(1)
  96     else:
  97         die("Could not determine file type for %s" % file)
  98
  99 def diffTreePattern():
 100     # This is a simple generator for the diff tree regex pattern. This could be
 101     # a class variable if this and parseDiffTreeEntry were a part of a class.
 102     pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)')
 103     while True:
 104         yield pattern
 105
 106 def parseDiffTreeEntry(entry):
 107     """Parses a single diff tree entry into its component elements.
 108
 109     See git-diff-tree(1) manpage for details about the format of the diff
 110     output. This method returns a dictionary with the following elements:
 111
 112     src_mode - The mode of the source file
 113     dst_mode - The mode of the destination file
 114     src_sha1 - The sha1 for the source file
 115     dst_sha1 - The sha1 fr the destination file
 116     status - The one letter status of the diff (i.e. 'A', 'M', 'D', etc)
 117     status_score - The score for the status (applicable for 'C' and 'R'
 118                    statuses). This is None if there is no score.
 119     src - The path for the source file.
 120     dst - The path for the destination file. This is only present for
 121           copy or renames. If it is not present, this is None.
 122
 123     If the pattern is not matched, None is returned."""
 124
 125     match = diffTreePattern().next().match(entry)
 126     if match:
 127         return {
 128             'src_mode': match.group(1),
 129             'dst_mode': match.group(2),
 130             'src_sha1': match.group(3),
 131             'dst_sha1': match.group(4),
 132             'status': match.group(5),
 133             'status_score': match.group(6),
 134             'src': match.group(7),
 135             'dst': match.group(10)
 136         }
 137     return None
 138
 139 def isModeExec(mode):
 140     # Returns True if the given git mode represents an executable file,
 141     # otherwise False.
 142     return mode[-3:] == "755"
 143
 144 def isModeExecChanged(src_mode, dst_mode):
 145     return isModeExec(src_mode) != isModeExec(dst_mode)
 146
 147 def p4CmdList(cmd, stdin=None, stdin_mode='w+b'):
 148     cmd = "p4 -G %s" % cmd
 149     if verbose:
 150         sys.stderr.write("Opening pipe: %s\n" % cmd)
 151
 152     # Use a temporary file to avoid deadlocks without
 153     # subprocess.communicate(), which would put another copy
 154     # of stdout into memory.
 155     stdin_file = None
 156     if stdin is not None:
 157         stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
 158         stdin_file.write(stdin)
 159         stdin_file.flush()
 160         stdin_file.seek(0)
 161
 162     p4 = subprocess.Popen(cmd, shell=True,
 163                           stdin=stdin_file,
 164                           stdout=subprocess.PIPE)
 165
 166     result = []
 167     try:
 168         while True:
 169             entry = marshal.load(p4.stdout)
 170             result.append(entry)
 171     except EOFError:
 172         pass
 173     exitCode = p4.wait()
 174     if exitCode != 0:
 175         entry = {}
 176         entry["p4ExitCode"] = exitCode
 177         result.append(entry)
 178
 179     return result
 180
 181 def p4Cmd(cmd):
 182     list = p4CmdList(cmd)
 183     result = {}
 184     for entry in list:
 185         result.update(entry)
 186     return result;
 187
 188 def p4Where(depotPath):
 189     if not depotPath.endswith("/"):
 190         depotPath += "/"
 191     output = p4Cmd("where %s..." % depotPath)
 192     if output["code"] == "error":
 193         return ""
 194     clientPath = ""
 195     if "path" in output:
 196         clientPath = output.get("path")
 197     elif "data" in output:
 198         data = output.get("data")
 199         lastSpace = data.rfind(" ")
 200         clientPath = data[lastSpace + 1:]
 201
 202     if clientPath.endswith("..."):
 203         clientPath = clientPath[:-3]
 204     return clientPath
 205
 206 def currentGitBranch():
 207     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 208
 209 def isValidGitDir(path):
 210     if (os.path.exists(path + "/HEAD")
 211         and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 212         return True;
 213     return False
 214
 215 def parseRevision(ref):
 216     return read_pipe("git rev-parse %s" % ref).strip()
 217
 218 def extractLogMessageFromGitCommit(commit):
 219     logMessage = ""
 220
 221     ## fixme: title is first line of commit, not 1st paragraph.
 222     foundTitle = False
 223     for log in read_pipe_lines("git cat-file commit %s" % commit):
 224        if not foundTitle:
 225            if len(log) == 1:
 226                foundTitle = True
 227            continue
 228
 229        logMessage += log
 230     return logMessage
 231
 232 def extractSettingsGitLog(log):
 233     values = {}
 234     for line in log.split("\n"):
 235         line = line.strip()
 236         m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 237         if not m:
 238             continue
 239
 240         assignments = m.group(1).split (':')
 241         for a in assignments:
 242             vals = a.split ('=')
 243             key = vals[0].strip()
 244             val = ('='.join (vals[1:])).strip()
 245             if val.endswith ('\"') and val.startswith('"'):
 246                 val = val[1:-1]
 247
 248             values[key] = val
 249
 250     paths = values.get("depot-paths")
 251     if not paths:
 252         paths = values.get("depot-path")
 253     if paths:
 254         values['depot-paths'] = paths.split(',')
 255     return values
 256
 257 def gitBranchExists(branch):
 258     proc = subprocess.Popen(["git", "rev-parse", branch],
 259                             stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 260     return proc.wait() == 0;
 261
 262 def gitConfig(key):
 263     return read_pipe("git config %s" % key, ignore_error=True).strip()
 264
 265 def p4BranchesInGit(branchesAreInRemotes = True):
 266     branches = {}
 267
 268     cmdline = "git rev-parse --symbolic "
 269     if branchesAreInRemotes:
 270         cmdline += " --remotes"
 271     else:
 272         cmdline += " --branches"
 273
 274     for line in read_pipe_lines(cmdline):
 275         line = line.strip()
 276
 277         ## only import to p4/
 278         if not line.startswith('p4/') or line == "p4/HEAD":
 279             continue
 280         branch = line
 281
 282         # strip off p4
 283         branch = re.sub ("^p4/", "", line)
 284
 285         branches[branch] = parseRevision(line)
 286     return branches
 287
 288 def findUpstreamBranchPoint(head = "HEAD"):
 289     branches = p4BranchesInGit()
 290     # map from depot-path to branch name
 291     branchByDepotPath = {}
 292     for branch in branches.keys():
 293         tip = branches[branch]
 294         log = extractLogMessageFromGitCommit(tip)
 295         settings = extractSettingsGitLog(log)
 296         if settings.has_key("depot-paths"):
 297             paths = ",".join(settings["depot-paths"])
 298             branchByDepotPath[paths] = "remotes/p4/" + branch
 299
 300     settings = None
 301     parent = 0
 302     while parent < 65535:
 303         commit = head + "~%s" % parent
 304         log = extractLogMessageFromGitCommit(commit)
 305         settings = extractSettingsGitLog(log)
 306         if settings.has_key("depot-paths"):
 307             paths = ",".join(settings["depot-paths"])
 308             if branchByDepotPath.has_key(paths):
 309                 return [branchByDepotPath[paths], settings]
 310
 311         parent = parent + 1
 312
 313     return ["", settings]
 314
 315 def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True):
 316     if not silent:
 317         print ("Creating/updating branch(es) in %s based on origin branch(es)"
 318                % localRefPrefix)
 319
 320     originPrefix = "origin/p4/"
 321
 322     for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 323         line = line.strip()
 324         if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
 325             continue
 326
 327         headName = line[len(originPrefix):]
 328         remoteHead = localRefPrefix + headName
 329         originHead = line
 330
 331         original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 332         if (not original.has_key('depot-paths')
 333             or not original.has_key('change')):
 334             continue
 335
 336         update = False
 337         if not gitBranchExists(remoteHead):
 338             if verbose:
 339                 print "creating %s" % remoteHead
 340             update = True
 341         else:
 342             settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 343             if settings.has_key('change') > 0:
 344                 if settings['depot-paths'] == original['depot-paths']:
 345                     originP4Change = int(original['change'])
 346                     p4Change = int(settings['change'])
 347                     if originP4Change > p4Change:
 348                         print ("%s (%s) is newer than %s (%s). "
 349                                "Updating p4 branch from origin."
 350                                % (originHead, originP4Change,
 351                                   remoteHead, p4Change))
 352                         update = True
 353                 else:
 354                     print ("Ignoring: %s was imported from %s while "
 355                            "%s was imported from %s"
 356                            % (originHead, ','.join(original['depot-paths']),
 357                               remoteHead, ','.join(settings['depot-paths'])))
 358
 359         if update:
 360             system("git update-ref %s %s" % (remoteHead, originHead))
 361
 362 def originP4BranchesExist():
 363         return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
 364
 365 def p4ChangesForPaths(depotPaths, changeRange):
 366     assert depotPaths
 367     output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, changeRange)
 368                                                         for p in depotPaths]))
 369
 370     changes = []
 371     for line in output:
 372         changeNum = line.split(" ")[1]
 373         changes.append(int(changeNum))
 374
 375     changes.sort()
 376     return changes
 377
 378 class Command:
 379     def __init__(self):
 380         self.usage = "usage: %prog [options]"
 381         self.needsGit = True
 382
 383 class P4Debug(Command):
 384     def __init__(self):
 385         Command.__init__(self)
 386         self.options = [
 387             optparse.make_option("--verbose", dest="verbose", action="store_true",
 388                                  default=False),
 389             ]
 390         self.description = "A tool to debug the output of p4 -G."
 391         self.needsGit = False
 392         self.verbose = False
 393
 394     def run(self, args):
 395         j = 0
 396         for output in p4CmdList(" ".join(args)):
 397             print 'Element: %d' % j
 398             j += 1
 399             print output
 400         return True
 401
 402 class P4RollBack(Command):
 403     def __init__(self):
 404         Command.__init__(self)
 405         self.options = [
 406             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 407             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 408         ]
 409         self.description = "A tool to debug the multi-branch import. Don't use :)"
 410         self.verbose = False
 411         self.rollbackLocalBranches = False
 412
 413     def run(self, args):
 414         if len(args) != 1:
 415             return False
 416         maxChange = int(args[0])
 417
 418         if "p4ExitCode" in p4Cmd("changes -m 1"):
 419             die("Problems executing p4");
 420
 421         if self.rollbackLocalBranches:
 422             refPrefix = "refs/heads/"
 423             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 424         else:
 425             refPrefix = "refs/remotes/"
 426             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 427
 428         for line in lines:
 429             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 430                 line = line.strip()
 431                 ref = refPrefix + line
 432                 log = extractLogMessageFromGitCommit(ref)
 433                 settings = extractSettingsGitLog(log)
 434
 435                 depotPaths = settings['depot-paths']
 436                 change = settings['change']
 437
 438                 changed = False
 439
 440                 if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 441                                                            for p in depotPaths]))) == 0:
 442                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 443                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 444                     continue
 445
 446                 while change and int(change) > maxChange:
 447                     changed = True
 448                     if self.verbose:
 449                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 450                     system("git update-ref %s \"%s^\"" % (ref, ref))
 451                     log = extractLogMessageFromGitCommit(ref)
 452                     settings =  extractSettingsGitLog(log)
 453
 454
 455                     depotPaths = settings['depot-paths']
 456                     change = settings['change']
 457
 458                 if changed:
 459                     print "%s rewound to %s" % (ref, change)
 460
 461         return True
 462
 463 class P4Submit(Command):
 464     def __init__(self):
 465         Command.__init__(self)
 466         self.options = [
 467                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
 468                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 469                 optparse.make_option("--origin", dest="origin"),
 470                 optparse.make_option("--reset", action="store_true", dest="reset"),
 471                 optparse.make_option("--log-substitutions", dest="substFile"),
 472                 optparse.make_option("--dry-run", action="store_true"),
 473                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
 474                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
 475                 optparse.make_option("-M", dest="detectRename", action="store_true"),
 476         ]
 477         self.description = "Submit changes from git to the perforce depot."
 478         self.usage += " [name of git branch to submit into perforce depot]"
 479         self.firstTime = True
 480         self.reset = False
 481         self.interactive = True
 482         self.dryRun = False
 483         self.substFile = ""
 484         self.firstTime = True
 485         self.origin = ""
 486         self.directSubmit = False
 487         self.trustMeLikeAFool = False
 488         self.detectRename = False
 489         self.verbose = False
 490         self.isWindows = (platform.system() == "Windows")
 491
 492         self.logSubstitutions = {}
 493         self.logSubstitutions["<enter description here>"] = "%log%"
 494         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
 495
 496     def check(self):
 497         if len(p4CmdList("opened ...")) > 0:
 498             die("You have files opened with perforce! Close them before starting the sync.")
 499
 500     def start(self):
 501         if len(self.config) > 0 and not self.reset:
 502             die("Cannot start sync. Previous sync config found at %s\n"
 503                 "If you want to start submitting again from scratch "
 504                 "maybe you want to call git-p4 submit --reset" % self.configFile)
 505
 506         commits = []
 507         if self.directSubmit:
 508             commits.append("0")
 509         else:
 510             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
 511                 commits.append(line.strip())
 512             commits.reverse()
 513
 514         self.config["commits"] = commits
 515
 516     def prepareLogMessage(self, template, message):
 517         result = ""
 518
 519         for line in template.split("\n"):
 520             if line.startswith("#"):
 521                 result += line + "\n"
 522                 continue
 523
 524             substituted = False
 525             for key in self.logSubstitutions.keys():
 526                 if line.find(key) != -1:
 527                     value = self.logSubstitutions[key]
 528                     value = value.replace("%log%", message)
 529                     if value != "@remove@":
 530                         result += line.replace(key, value) + "\n"
 531                     substituted = True
 532                     break
 533
 534             if not substituted:
 535                 result += line + "\n"
 536
 537         return result
 538
 539     def prepareSubmitTemplate(self):
 540         # remove lines in the Files section that show changes to files outside the depot path we're committing into
 541         template = ""
 542         inFilesSection = False
 543         for line in read_pipe_lines("p4 change -o"):
 544             if inFilesSection:
 545                 if line.startswith("\t"):
 546                     # path starts and ends with a tab
 547                     path = line[1:]
 548                     lastTab = path.rfind("\t")
 549                     if lastTab != -1:
 550                         path = path[:lastTab]
 551                         if not path.startswith(self.depotPath):
 552                             continue
 553                 else:
 554                     inFilesSection = False
 555             else:
 556                 if line.startswith("Files:"):
 557                     inFilesSection = True
 558
 559             template += line
 560
 561         return template
 562
 563     def applyCommit(self, id):
 564         if self.directSubmit:
 565             print "Applying local change in working directory/index"
 566             diff = self.diffStatus
 567         else:
 568             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 569             diffOpts = ("", "-M")[self.detectRename]
 570             diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id))
 571         filesToAdd = set()
 572         filesToDelete = set()
 573         editedFiles = set()
 574         filesToChangeExecBit = {}
 575         for line in diff:
 576             diff = parseDiffTreeEntry(line)
 577             modifier = diff['status']
 578             path = diff['src']
 579             if modifier == "M":
 580                 system("p4 edit \"%s\"" % path)
 581                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 582                     filesToChangeExecBit[path] = diff['dst_mode']
 583                 editedFiles.add(path)
 584             elif modifier == "A":
 585                 filesToAdd.add(path)
 586                 filesToChangeExecBit[path] = diff['dst_mode']
 587                 if path in filesToDelete:
 588                     filesToDelete.remove(path)
 589             elif modifier == "D":
 590                 filesToDelete.add(path)
 591                 if path in filesToAdd:
 592                     filesToAdd.remove(path)
 593             elif modifier == "R":
 594                 src, dest = diff['src'], diff['dst']
 595                 system("p4 integrate -Dt \"%s\" \"%s\"" % (src, dest))
 596                 system("p4 edit \"%s\"" % (dest))
 597                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 598                     filesToChangeExecBit[dest] = diff['dst_mode']
 599                 os.unlink(dest)
 600                 editedFiles.add(dest)
 601                 filesToDelete.add(src)
 602             else:
 603                 die("unknown modifier %s for %s" % (modifier, path))
 604
 605         if self.directSubmit:
 606             diffcmd = "cat \"%s\"" % self.diffFile
 607         else:
 608             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 609         patchcmd = diffcmd + " | git apply "
 610         tryPatchCmd = patchcmd + "--check -"
 611         applyPatchCmd = patchcmd + "--check --apply -"
 612
 613         if os.system(tryPatchCmd) != 0:
 614             print "Unfortunately applying the change failed!"
 615             print "What do you want to do?"
 616             response = "x"
 617             while response != "s" and response != "a" and response != "w":
 618                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 619                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 620             if response == "s":
 621                 print "Skipping! Good luck with the next patches..."
 622                 for f in editedFiles:
 623                     system("p4 revert \"%s\"" % f);
 624                 for f in filesToAdd:
 625                     system("rm %s" %f)
 626                 return
 627             elif response == "a":
 628                 os.system(applyPatchCmd)
 629                 if len(filesToAdd) > 0:
 630                     print "You may also want to call p4 add on the following files:"
 631                     print " ".join(filesToAdd)
 632                 if len(filesToDelete):
 633                     print "The following files should be scheduled for deletion with p4 delete:"
 634                     print " ".join(filesToDelete)
 635                 die("Please resolve and submit the conflict manually and "
 636                     + "continue afterwards with git-p4 submit --continue")
 637             elif response == "w":
 638                 system(diffcmd + " > patch.txt")
 639                 print "Patch saved to patch.txt in %s !" % self.clientPath
 640                 die("Please resolve and submit the conflict manually and "
 641                     "continue afterwards with git-p4 submit --continue")
 642
 643         system(applyPatchCmd)
 644
 645         for f in filesToAdd:
 646             system("p4 add \"%s\"" % f)
 647         for f in filesToDelete:
 648             system("p4 revert \"%s\"" % f)
 649             system("p4 delete \"%s\"" % f)
 650
 651         # Set/clear executable bits
 652         for f in filesToChangeExecBit.keys():
 653             mode = filesToChangeExecBit[f]
 654             setP4ExecBit(f, mode)
 655
 656         logMessage = ""
 657         if not self.directSubmit:
 658             logMessage = extractLogMessageFromGitCommit(id)
 659             logMessage = logMessage.replace("\n", "\n\t")
 660             if self.isWindows:
 661                 logMessage = logMessage.replace("\n", "\r\n")
 662             logMessage = logMessage.strip()
 663
 664         template = self.prepareSubmitTemplate()
 665
 666         if self.interactive:
 667             submitTemplate = self.prepareLogMessage(template, logMessage)
 668             diff = read_pipe("p4 diff -du ...")
 669
 670             for newFile in filesToAdd:
 671                 diff += "==== new file ====\n"
 672                 diff += "--- /dev/null\n"
 673                 diff += "+++ %s\n" % newFile
 674                 f = open(newFile, "r")
 675                 for line in f.readlines():
 676                     diff += "+" + line
 677                 f.close()
 678
 679             separatorLine = "######## everything below this line is just the diff #######"
 680             if platform.system() == "Windows":
 681                 separatorLine += "\r"
 682             separatorLine += "\n"
 683
 684             response = "e"
 685             if self.trustMeLikeAFool:
 686                 response = "y"
 687
 688             firstIteration = True
 689             while response == "e":
 690                 if not firstIteration:
 691                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
 692                 firstIteration = False
 693                 if response == "e":
 694                     [handle, fileName] = tempfile.mkstemp()
 695                     tmpFile = os.fdopen(handle, "w+")
 696                     tmpFile.write(submitTemplate + separatorLine + diff)
 697                     tmpFile.close()
 698                     defaultEditor = "vi"
 699                     if platform.system() == "Windows":
 700                         defaultEditor = "notepad"
 701                     editor = os.environ.get("EDITOR", defaultEditor);
 702                     system(editor + " " + fileName)
 703                     tmpFile = open(fileName, "rb")
 704                     message = tmpFile.read()
 705                     tmpFile.close()
 706                     os.remove(fileName)
 707                     submitTemplate = message[:message.index(separatorLine)]
 708                     if self.isWindows:
 709                         submitTemplate = submitTemplate.replace("\r\n", "\n")
 710
 711             if response == "y" or response == "yes":
 712                if self.dryRun:
 713                    print submitTemplate
 714                    raw_input("Press return to continue...")
 715                else:
 716                    if self.directSubmit:
 717                        print "Submitting to git first"
 718                        os.chdir(self.oldWorkingDirectory)
 719                        write_pipe("git commit -a -F -", submitTemplate)
 720                        os.chdir(self.clientPath)
 721
 722                    write_pipe("p4 submit -i", submitTemplate)
 723             elif response == "s":
 724                 for f in editedFiles:
 725                     system("p4 revert \"%s\"" % f);
 726                 for f in filesToAdd:
 727                     system("p4 revert \"%s\"" % f);
 728                     system("rm %s" %f)
 729                 for f in filesToDelete:
 730                     system("p4 delete \"%s\"" % f);
 731                 return
 732             else:
 733                 print "Not submitting!"
 734                 self.interactive = False
 735         else:
 736             fileName = "submit.txt"
 737             file = open(fileName, "w+")
 738             file.write(self.prepareLogMessage(template, logMessage))
 739             file.close()
 740             print ("Perforce submit template written as %s. "
 741                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
 742                    % (fileName, fileName))
 743
 744     def run(self, args):
 745         if len(args) == 0:
 746             self.master = currentGitBranch()
 747             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
 748                 die("Detecting current git branch failed!")
 749         elif len(args) == 1:
 750             self.master = args[0]
 751         else:
 752             return False
 753
 754         [upstream, settings] = findUpstreamBranchPoint()
 755         self.depotPath = settings['depot-paths'][0]
 756         if len(self.origin) == 0:
 757             self.origin = upstream
 758
 759         if self.verbose:
 760             print "Origin branch is " + self.origin
 761
 762         if len(self.depotPath) == 0:
 763             print "Internal error: cannot locate perforce depot path from existing branches"
 764             sys.exit(128)
 765
 766         self.clientPath = p4Where(self.depotPath)
 767
 768         if len(self.clientPath) == 0:
 769             print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
 770             sys.exit(128)
 771
 772         print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
 773         self.oldWorkingDirectory = os.getcwd()
 774
 775         if self.directSubmit:
 776             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
 777             if len(self.diffStatus) == 0:
 778                 print "No changes in working directory to submit."
 779                 return True
 780             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
 781             self.diffFile = self.gitdir + "/p4-git-diff"
 782             f = open(self.diffFile, "wb")
 783             f.write(patch)
 784             f.close();
 785
 786         os.chdir(self.clientPath)
 787         print "Syncronizing p4 checkout..."
 788         system("p4 sync ...")
 789
 790         if self.reset:
 791             self.firstTime = True
 792
 793         if len(self.substFile) > 0:
 794             for line in open(self.substFile, "r").readlines():
 795                 tokens = line.strip().split("=")
 796                 self.logSubstitutions[tokens[0]] = tokens[1]
 797
 798         self.check()
 799         self.configFile = self.gitdir + "/p4-git-sync.cfg"
 800         self.config = shelve.open(self.configFile, writeback=True)
 801
 802         if self.firstTime:
 803             self.start()
 804
 805         commits = self.config.get("commits", [])
 806
 807         while len(commits) > 0:
 808             self.firstTime = False
 809             commit = commits[0]
 810             commits = commits[1:]
 811             self.config["commits"] = commits
 812             self.applyCommit(commit)
 813             if not self.interactive:
 814                 break
 815
 816         self.config.close()
 817
 818         if self.directSubmit:
 819             os.remove(self.diffFile)
 820
 821         if len(commits) == 0:
 822             if self.firstTime:
 823                 print "No changes found to apply between %s and current HEAD" % self.origin
 824             else:
 825                 print "All changes applied!"
 826                 os.chdir(self.oldWorkingDirectory)
 827
 828                 sync = P4Sync()
 829                 sync.run([])
 830
 831                 response = raw_input("Do you want to rebase current HEAD from Perforce now using git-p4 rebase? [y]es/[n]o ")
 832                 if response == "y" or response == "yes":
 833                     rebase = P4Rebase()
 834                     rebase.rebase()
 835             os.remove(self.configFile)
 836
 837         return True
 838
 839 class P4Sync(Command):
 840     def __init__(self):
 841         Command.__init__(self)
 842         self.options = [
 843                 optparse.make_option("--branch", dest="branch"),
 844                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
 845                 optparse.make_option("--changesfile", dest="changesFile"),
 846                 optparse.make_option("--silent", dest="silent", action="store_true"),
 847                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
 848                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 849                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
 850                                      help="Import into refs/heads/ , not refs/remotes"),
 851                 optparse.make_option("--max-changes", dest="maxChanges"),
 852                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
 853                                      help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
 854         ]
 855         self.description = """Imports from Perforce into a git repository.\n
 856     example:
 857     //depot/my/project/ -- to import the current head
 858     //depot/my/project/@all -- to import everything
 859     //depot/my/project/@1,6 -- to import only from revision 1 to 6
 860
 861     (a ... is not needed in the path p4 specification, it's added implicitly)"""
 862
 863         self.usage += " //depot/path[@revRange]"
 864         self.silent = False
 865         self.createdBranches = Set()
 866         self.committedChanges = Set()
 867         self.branch = ""
 868         self.detectBranches = False
 869         self.detectLabels = False
 870         self.changesFile = ""
 871         self.syncWithOrigin = True
 872         self.verbose = False
 873         self.importIntoRemotes = True
 874         self.maxChanges = ""
 875         self.isWindows = (platform.system() == "Windows")
 876         self.keepRepoPath = False
 877         self.depotPaths = None
 878         self.p4BranchesInGit = []
 879
 880         if gitConfig("git-p4.syncFromOrigin") == "false":
 881             self.syncWithOrigin = False
 882
 883     def extractFilesFromCommit(self, commit):
 884         files = []
 885         fnum = 0
 886         while commit.has_key("depotFile%s" % fnum):
 887             path =  commit["depotFile%s" % fnum]
 888
 889             found = [p for p in self.depotPaths
 890                      if path.startswith (p)]
 891             if not found:
 892                 fnum = fnum + 1
 893                 continue
 894
 895             file = {}
 896             file["path"] = path
 897             file["rev"] = commit["rev%s" % fnum]
 898             file["action"] = commit["action%s" % fnum]
 899             file["type"] = commit["type%s" % fnum]
 900             files.append(file)
 901             fnum = fnum + 1
 902         return files
 903
 904     def stripRepoPath(self, path, prefixes):
 905         if self.keepRepoPath:
 906             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
 907
 908         for p in prefixes:
 909             if path.startswith(p):
 910                 path = path[len(p):]
 911
 912         return path
 913
 914     def splitFilesIntoBranches(self, commit):
 915         branches = {}
 916         fnum = 0
 917         while commit.has_key("depotFile%s" % fnum):
 918             path =  commit["depotFile%s" % fnum]
 919             found = [p for p in self.depotPaths
 920                      if path.startswith (p)]
 921             if not found:
 922                 fnum = fnum + 1
 923                 continue
 924
 925             file = {}
 926             file["path"] = path
 927             file["rev"] = commit["rev%s" % fnum]
 928             file["action"] = commit["action%s" % fnum]
 929             file["type"] = commit["type%s" % fnum]
 930             fnum = fnum + 1
 931
 932             relPath = self.stripRepoPath(path, self.depotPaths)
 933
 934             for branch in self.knownBranches.keys():
 935
 936                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
 937                 if relPath.startswith(branch + "/"):
 938                     if branch not in branches:
 939                         branches[branch] = []
 940                     branches[branch].append(file)
 941                     break
 942
 943         return branches
 944
 945     ## Should move this out, doesn't use SELF.
 946     def readP4Files(self, files):
 947         files = [f for f in files
 948                  if f['action'] != 'delete']
 949
 950         if not files:
 951             return
 952
 953         filedata = p4CmdList('-x - print',
 954                              stdin='\n'.join(['%s#%s' % (f['path'], f['rev'])
 955                                               for f in files]),
 956                              stdin_mode='w+')
 957         if "p4ExitCode" in filedata[0]:
 958             die("Problems executing p4. Error: [%d]."
 959                 % (filedata[0]['p4ExitCode']));
 960
 961         j = 0;
 962         contents = {}
 963         while j < len(filedata):
 964             stat = filedata[j]
 965             j += 1
 966             text = ''
 967             while j < len(filedata) and filedata[j]['code'] in ('text',
 968                                                                 'binary'):
 969                 text += filedata[j]['data']
 970                 j += 1
 971
 972
 973             if not stat.has_key('depotFile'):
 974                 sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
 975                 continue
 976
 977             contents[stat['depotFile']] = text
 978
 979         for f in files:
 980             assert not f.has_key('data')
 981             f['data'] = contents[f['path']]
 982
 983     def commit(self, details, files, branch, branchPrefixes, parent = ""):
 984         epoch = details["time"]
 985         author = details["user"]
 986
 987         if self.verbose:
 988             print "commit into %s" % branch
 989
 990         # start with reading files; if that fails, we should not
 991         # create a commit.
 992         new_files = []
 993         for f in files:
 994             if [p for p in branchPrefixes if f['path'].startswith(p)]:
 995                 new_files.append (f)
 996             else:
 997                 sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
 998         files = new_files
 999         self.readP4Files(files)
1000
1001
1002
1003
1004         self.gitStream.write("commit %s\n" % branch)
1005 #        gitStream.write("mark :%s\n" % details["change"])
1006         self.committedChanges.add(int(details["change"]))
1007         committer = ""
1008         if author not in self.users:
1009             self.getUserMapFromPerforceServer()
1010         if author in self.users:
1011             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
1012         else:
1013             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
1014
1015         self.gitStream.write("committer %s\n" % committer)
1016
1017         self.gitStream.write("data <<EOT\n")
1018         self.gitStream.write(details["desc"])
1019         self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
1020                              % (','.join (branchPrefixes), details["change"]))
1021         if len(details['options']) > 0:
1022             self.gitStream.write(": options = %s" % details['options'])
1023         self.gitStream.write("]\nEOT\n\n")
1024
1025         if len(parent) > 0:
1026             if self.verbose:
1027                 print "parent %s" % parent
1028             self.gitStream.write("from %s\n" % parent)
1029
1030         for file in files:
1031             if file["type"] == "apple":
1032                 print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
1033                 continue
1034
1035             relPath = self.stripRepoPath(file['path'], branchPrefixes)
1036             if file["action"] == "delete":
1037                 self.gitStream.write("D %s\n" % relPath)
1038             else:
1039                 data = file['data']
1040
1041                 mode = "644"
1042                 if isP4Exec(file["type"]):
1043                     mode = "755"
1044                 elif file["type"] == "symlink":
1045                     mode = "120000"
1046                     # p4 print on a symlink contains "target\n", so strip it off
1047                     data = data[:-1]
1048
1049                 if self.isWindows and file["type"].endswith("text"):
1050                     data = data.replace("\r\n", "\n")
1051
1052                 self.gitStream.write("M %s inline %s\n" % (mode, relPath))
1053                 self.gitStream.write("data %s\n" % len(data))
1054                 self.gitStream.write(data)
1055                 self.gitStream.write("\n")
1056
1057         self.gitStream.write("\n")
1058
1059         change = int(details["change"])
1060
1061         if self.labels.has_key(change):
1062             label = self.labels[change]
1063             labelDetails = label[0]
1064             labelRevisions = label[1]
1065             if self.verbose:
1066                 print "Change %s is labelled %s" % (change, labelDetails)
1067
1068             files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
1069                                                     for p in branchPrefixes]))
1070
1071             if len(files) == len(labelRevisions):
1072
1073                 cleanedFiles = {}
1074                 for info in files:
1075                     if info["action"] == "delete":
1076                         continue
1077                     cleanedFiles[info["depotFile"]] = info["rev"]
1078
1079                 if cleanedFiles == labelRevisions:
1080                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
1081                     self.gitStream.write("from %s\n" % branch)
1082
1083                     owner = labelDetails["Owner"]
1084                     tagger = ""
1085                     if author in self.users:
1086                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
1087                     else:
1088                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
1089                     self.gitStream.write("tagger %s\n" % tagger)
1090                     self.gitStream.write("data <<EOT\n")
1091                     self.gitStream.write(labelDetails["Description"])
1092                     self.gitStream.write("EOT\n\n")
1093
1094                 else:
1095                     if not self.silent:
1096                         print ("Tag %s does not match with change %s: files do not match."
1097                                % (labelDetails["label"], change))
1098
1099             else:
1100                 if not self.silent:
1101                     print ("Tag %s does not match with change %s: file count is different."
1102                            % (labelDetails["label"], change))
1103
1104     def getUserCacheFilename(self):
1105         home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
1106         return home + "/.gitp4-usercache.txt"
1107
1108     def getUserMapFromPerforceServer(self):
1109         if self.userMapFromPerforceServer:
1110             return
1111         self.users = {}
1112
1113         for output in p4CmdList("users"):
1114             if not output.has_key("User"):
1115                 continue
1116             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
1117
1118
1119         s = ''
1120         for (key, val) in self.users.items():
1121             s += "%s\t%s\n" % (key, val)
1122
1123         open(self.getUserCacheFilename(), "wb").write(s)
1124         self.userMapFromPerforceServer = True
1125
1126     def loadUserMapFromCache(self):
1127         self.users = {}
1128         self.userMapFromPerforceServer = False
1129         try:
1130             cache = open(self.getUserCacheFilename(), "rb")
1131             lines = cache.readlines()
1132             cache.close()
1133             for line in lines:
1134                 entry = line.strip().split("\t")
1135                 self.users[entry[0]] = entry[1]
1136         except IOError:
1137             self.getUserMapFromPerforceServer()
1138
1139     def getLabels(self):
1140         self.labels = {}
1141
1142         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
1143         if len(l) > 0 and not self.silent:
1144             print "Finding files belonging to labels in %s" % `self.depotPath`
1145
1146         for output in l:
1147             label = output["label"]
1148             revisions = {}
1149             newestChange = 0
1150             if self.verbose:
1151                 print "Querying files for label %s" % label
1152             for file in p4CmdList("files "
1153                                   +  ' '.join (["%s...@%s" % (p, label)
1154                                                 for p in self.depotPaths])):
1155                 revisions[file["depotFile"]] = file["rev"]
1156                 change = int(file["change"])
1157                 if change > newestChange:
1158                     newestChange = change
1159
1160             self.labels[newestChange] = [output, revisions]
1161
1162         if self.verbose:
1163             print "Label changes: %s" % self.labels.keys()
1164
1165     def guessProjectName(self):
1166         for p in self.depotPaths:
1167             if p.endswith("/"):
1168                 p = p[:-1]
1169             p = p[p.strip().rfind("/") + 1:]
1170             if not p.endswith("/"):
1171                p += "/"
1172             return p
1173
1174     def getBranchMapping(self):
1175         lostAndFoundBranches = set()
1176
1177         for info in p4CmdList("branches"):
1178             details = p4Cmd("branch -o %s" % info["branch"])
1179             viewIdx = 0
1180             while details.has_key("View%s" % viewIdx):
1181                 paths = details["View%s" % viewIdx].split(" ")
1182                 viewIdx = viewIdx + 1
1183                 # require standard //depot/foo/... //depot/bar/... mapping
1184                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1185                     continue
1186                 source = paths[0]
1187                 destination = paths[1]
1188                 ## HACK
1189                 if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
1190                     source = source[len(self.depotPaths[0]):-4]
1191                     destination = destination[len(self.depotPaths[0]):-4]
1192
1193                     if destination in self.knownBranches:
1194                         if not self.silent:
1195                             print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1196                             print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1197                         continue
1198
1199                     self.knownBranches[destination] = source
1200
1201                     lostAndFoundBranches.discard(destination)
1202
1203                     if source not in self.knownBranches:
1204                         lostAndFoundBranches.add(source)
1205
1206
1207         for branch in lostAndFoundBranches:
1208             self.knownBranches[branch] = branch
1209
1210     def listExistingP4GitBranches(self):
1211         # branches holds mapping from name to commit
1212         branches = p4BranchesInGit(self.importIntoRemotes)
1213         self.p4BranchesInGit = branches.keys()
1214         for branch in branches.keys():
1215             self.initialParents[self.refPrefix + branch] = branches[branch]
1216
1217     def updateOptionDict(self, d):
1218         option_keys = {}
1219         if self.keepRepoPath:
1220             option_keys['keepRepoPath'] = 1
1221
1222         d["options"] = ' '.join(sorted(option_keys.keys()))
1223
1224     def readOptions(self, d):
1225         self.keepRepoPath = (d.has_key('options')
1226                              and ('keepRepoPath' in d['options']))
1227
1228     def gitRefForBranch(self, branch):
1229         if branch == "main":
1230             return self.refPrefix + "master"
1231
1232         if len(branch) <= 0:
1233             return branch
1234
1235         return self.refPrefix + self.projectName + branch
1236
1237     def gitCommitByP4Change(self, ref, change):
1238         if self.verbose:
1239             print "looking in ref " + ref + " for change %s using bisect..." % change
1240
1241         earliestCommit = ""
1242         latestCommit = parseRevision(ref)
1243
1244         while True:
1245             if self.verbose:
1246                 print "trying: earliest %s latest %s" % (earliestCommit, latestCommit)
1247             next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip()
1248             if len(next) == 0:
1249                 if self.verbose:
1250                     print "argh"
1251                 return ""
1252             log = extractLogMessageFromGitCommit(next)
1253             settings = extractSettingsGitLog(log)
1254             currentChange = int(settings['change'])
1255             if self.verbose:
1256                 print "current change %s" % currentChange
1257
1258             if currentChange == change:
1259                 if self.verbose:
1260                     print "found %s" % next
1261                 return next
1262
1263             if currentChange < change:
1264                 earliestCommit = "^%s" % next
1265             else:
1266                 latestCommit = "%s" % next
1267
1268         return ""
1269
1270     def importNewBranch(self, branch, maxChange):
1271         # make fast-import flush all changes to disk and update the refs using the checkpoint
1272         # command so that we can try to find the branch parent in the git history
1273         self.gitStream.write("checkpoint\n\n");
1274         self.gitStream.flush();
1275         branchPrefix = self.depotPaths[0] + branch + "/"
1276         range = "@1,%s" % maxChange
1277         #print "prefix" + branchPrefix
1278         changes = p4ChangesForPaths([branchPrefix], range)
1279         if len(changes) <= 0:
1280             return False
1281         firstChange = changes[0]
1282         #print "first change in branch: %s" % firstChange
1283         sourceBranch = self.knownBranches[branch]
1284         sourceDepotPath = self.depotPaths[0] + sourceBranch
1285         sourceRef = self.gitRefForBranch(sourceBranch)
1286         #print "source " + sourceBranch
1287
1288         branchParentChange = int(p4Cmd("changes -m 1 %s...@1,%s" % (sourceDepotPath, firstChange))["change"])
1289         #print "branch parent: %s" % branchParentChange
1290         gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange)
1291         if len(gitParent) > 0:
1292             self.initialParents[self.gitRefForBranch(branch)] = gitParent
1293             #print "parent git commit: %s" % gitParent
1294
1295         self.importChanges(changes)
1296         return True
1297
1298     def importChanges(self, changes):
1299         cnt = 1
1300         for change in changes:
1301             description = p4Cmd("describe %s" % change)
1302             self.updateOptionDict(description)
1303
1304             if not self.silent:
1305                 sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1306                 sys.stdout.flush()
1307             cnt = cnt + 1
1308
1309             try:
1310                 if self.detectBranches:
1311                     branches = self.splitFilesIntoBranches(description)
1312                     for branch in branches.keys():
1313                         ## HACK  --hwn
1314                         branchPrefix = self.depotPaths[0] + branch + "/"
1315
1316                         parent = ""
1317
1318                         filesForCommit = branches[branch]
1319
1320                         if self.verbose:
1321                             print "branch is %s" % branch
1322
1323                         self.updatedBranches.add(branch)
1324
1325                         if branch not in self.createdBranches:
1326                             self.createdBranches.add(branch)
1327                             parent = self.knownBranches[branch]
1328                             if parent == branch:
1329                                 parent = ""
1330                             else:
1331                                 fullBranch = self.projectName + branch
1332                                 if fullBranch not in self.p4BranchesInGit:
1333                                     if not self.silent:
1334                                         print("\n    Importing new branch %s" % fullBranch);
1335                                     if self.importNewBranch(branch, change - 1):
1336                                         parent = ""
1337                                         self.p4BranchesInGit.append(fullBranch)
1338                                     if not self.silent:
1339                                         print("\n    Resuming with change %s" % change);
1340
1341                                 if self.verbose:
1342                                     print "parent determined through known branches: %s" % parent
1343
1344                         branch = self.gitRefForBranch(branch)
1345                         parent = self.gitRefForBranch(parent)
1346
1347                         if self.verbose:
1348                             print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1349
1350                         if len(parent) == 0 and branch in self.initialParents:
1351                             parent = self.initialParents[branch]
1352                             del self.initialParents[branch]
1353
1354                         self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1355                 else:
1356                     files = self.extractFilesFromCommit(description)
1357                     self.commit(description, files, self.branch, self.depotPaths,
1358                                 self.initialParent)
1359                     self.initialParent = ""
1360             except IOError:
1361                 print self.gitError.read()
1362                 sys.exit(1)
1363
1364     def importHeadRevision(self, revision):
1365         print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
1366
1367         details = { "user" : "git perforce import user", "time" : int(time.time()) }
1368         details["desc"] = ("Initial import of %s from the state at revision %s"
1369                            % (' '.join(self.depotPaths), revision))
1370         details["change"] = revision
1371         newestRevision = 0
1372
1373         fileCnt = 0
1374         for info in p4CmdList("files "
1375                               +  ' '.join(["%s...%s"
1376                                            % (p, revision)
1377                                            for p in self.depotPaths])):
1378
1379             if info['code'] == 'error':
1380                 sys.stderr.write("p4 returned an error: %s\n"
1381                                  % info['data'])
1382                 sys.exit(1)
1383
1384
1385             change = int(info["change"])
1386             if change > newestRevision:
1387                 newestRevision = change
1388
1389             if info["action"] == "delete":
1390                 # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1391                 #fileCnt = fileCnt + 1
1392                 continue
1393
1394             for prop in ["depotFile", "rev", "action", "type" ]:
1395                 details["%s%s" % (prop, fileCnt)] = info[prop]
1396
1397             fileCnt = fileCnt + 1
1398
1399         details["change"] = newestRevision
1400         self.updateOptionDict(details)
1401         try:
1402             self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1403         except IOError:
1404             print "IO error with git fast-import. Is your git version recent enough?"
1405             print self.gitError.read()
1406
1407
1408     def run(self, args):
1409         self.depotPaths = []
1410         self.changeRange = ""
1411         self.initialParent = ""
1412         self.previousDepotPaths = []
1413
1414         # map from branch depot path to parent branch
1415         self.knownBranches = {}
1416         self.initialParents = {}
1417         self.hasOrigin = originP4BranchesExist()
1418         if not self.syncWithOrigin:
1419             self.hasOrigin = False
1420
1421         if self.importIntoRemotes:
1422             self.refPrefix = "refs/remotes/p4/"
1423         else:
1424             self.refPrefix = "refs/heads/p4/"
1425
1426         if self.syncWithOrigin and self.hasOrigin:
1427             if not self.silent:
1428                 print "Syncing with origin first by calling git fetch origin"
1429             system("git fetch origin")
1430
1431         if len(self.branch) == 0:
1432             self.branch = self.refPrefix + "master"
1433             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1434                 system("git update-ref %s refs/heads/p4" % self.branch)
1435                 system("git branch -D p4");
1436             # create it /after/ importing, when master exists
1437             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
1438                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1439
1440         # TODO: should always look at previous commits,
1441         # merge with previous imports, if possible.
1442         if args == []:
1443             if self.hasOrigin:
1444                 createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
1445             self.listExistingP4GitBranches()
1446
1447             if len(self.p4BranchesInGit) > 1:
1448                 if not self.silent:
1449                     print "Importing from/into multiple branches"
1450                 self.detectBranches = True
1451
1452             if self.verbose:
1453                 print "branches: %s" % self.p4BranchesInGit
1454
1455             p4Change = 0
1456             for branch in self.p4BranchesInGit:
1457                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1458
1459                 settings = extractSettingsGitLog(logMsg)
1460
1461                 self.readOptions(settings)
1462                 if (settings.has_key('depot-paths')
1463                     and settings.has_key ('change')):
1464                     change = int(settings['change']) + 1
1465                     p4Change = max(p4Change, change)
1466
1467                     depotPaths = sorted(settings['depot-paths'])
1468                     if self.previousDepotPaths == []:
1469                         self.previousDepotPaths = depotPaths
1470                     else:
1471                         paths = []
1472                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1473                             for i in range(0, min(len(cur), len(prev))):
1474                                 if cur[i] <> prev[i]:
1475                                     i = i - 1
1476                                     break
1477
1478                             paths.append (cur[:i + 1])
1479
1480                         self.previousDepotPaths = paths
1481
1482             if p4Change > 0:
1483                 self.depotPaths = sorted(self.previousDepotPaths)
1484                 self.changeRange = "@%s,#head" % p4Change
1485                 if not self.detectBranches:
1486                     self.initialParent = parseRevision(self.branch)
1487                 if not self.silent and not self.detectBranches:
1488                     print "Performing incremental import into %s git branch" % self.branch
1489
1490         if not self.branch.startswith("refs/"):
1491             self.branch = "refs/heads/" + self.branch
1492
1493         if len(args) == 0 and self.depotPaths:
1494             if not self.silent:
1495                 print "Depot paths: %s" % ' '.join(self.depotPaths)
1496         else:
1497             if self.depotPaths and self.depotPaths != args:
1498                 print ("previous import used depot path %s and now %s was specified. "
1499                        "This doesn't work!" % (' '.join (self.depotPaths),
1500                                                ' '.join (args)))
1501                 sys.exit(1)
1502
1503             self.depotPaths = sorted(args)
1504
1505         revision = ""
1506         self.users = {}
1507
1508         newPaths = []
1509         for p in self.depotPaths:
1510             if p.find("@") != -1:
1511                 atIdx = p.index("@")
1512                 self.changeRange = p[atIdx:]
1513                 if self.changeRange == "@all":
1514                     self.changeRange = ""
1515                 elif ',' not in self.changeRange:
1516                     revision = self.changeRange
1517                     self.changeRange = ""
1518                 p = p[:atIdx]
1519             elif p.find("#") != -1:
1520                 hashIdx = p.index("#")
1521                 revision = p[hashIdx:]
1522                 p = p[:hashIdx]
1523             elif self.previousDepotPaths == []:
1524                 revision = "#head"
1525
1526             p = re.sub ("\.\.\.$", "", p)
1527             if not p.endswith("/"):
1528                 p += "/"
1529
1530             newPaths.append(p)
1531
1532         self.depotPaths = newPaths
1533
1534
1535         self.loadUserMapFromCache()
1536         self.labels = {}
1537         if self.detectLabels:
1538             self.getLabels();
1539
1540         if self.detectBranches:
1541             ## FIXME - what's a P4 projectName ?
1542             self.projectName = self.guessProjectName()
1543
1544             if not self.hasOrigin:
1545                 self.getBranchMapping();
1546             if self.verbose:
1547                 print "p4-git branches: %s" % self.p4BranchesInGit
1548                 print "initial parents: %s" % self.initialParents
1549             for b in self.p4BranchesInGit:
1550                 if b != "master":
1551
1552                     ## FIXME
1553                     b = b[len(self.projectName):]
1554                 self.createdBranches.add(b)
1555
1556         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1557
1558         importProcess = subprocess.Popen(["git", "fast-import"],
1559                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1560                                          stderr=subprocess.PIPE);
1561         self.gitOutput = importProcess.stdout
1562         self.gitStream = importProcess.stdin
1563         self.gitError = importProcess.stderr
1564
1565         if revision:
1566             self.importHeadRevision(revision)
1567         else:
1568             changes = []
1569
1570             if len(self.changesFile) > 0:
1571                 output = open(self.changesFile).readlines()
1572                 changeSet = Set()
1573                 for line in output:
1574                     changeSet.add(int(line))
1575
1576                 for change in changeSet:
1577                     changes.append(change)
1578
1579                 changes.sort()
1580             else:
1581                 if self.verbose:
1582                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1583                                                               self.changeRange)
1584                 changes = p4ChangesForPaths(self.depotPaths, self.changeRange)
1585
1586                 if len(self.maxChanges) > 0:
1587                     changes = changes[:min(int(self.maxChanges), len(changes))]
1588
1589             if len(changes) == 0:
1590                 if not self.silent:
1591                     print "No changes to import!"
1592                 return True
1593
1594             if not self.silent and not self.detectBranches:
1595                 print "Import destination: %s" % self.branch
1596
1597             self.updatedBranches = set()
1598
1599             self.importChanges(changes)
1600
1601             if not self.silent:
1602                 print ""
1603                 if len(self.updatedBranches) > 0:
1604                     sys.stdout.write("Updated branches: ")
1605                     for b in self.updatedBranches:
1606                         sys.stdout.write("%s " % b)
1607                     sys.stdout.write("\n")
1608
1609         self.gitStream.close()
1610         if importProcess.wait() != 0:
1611             die("fast-import failed: %s" % self.gitError.read())
1612         self.gitOutput.close()
1613         self.gitError.close()
1614
1615         return True
1616
1617 class P4Rebase(Command):
1618     def __init__(self):
1619         Command.__init__(self)
1620         self.options = [ ]
1621         self.description = ("Fetches the latest revision from perforce and "
1622                             + "rebases the current work (branch) against it")
1623         self.verbose = False
1624
1625     def run(self, args):
1626         sync = P4Sync()
1627         sync.run([])
1628
1629         return self.rebase()
1630
1631     def rebase(self):
1632         [upstream, settings] = findUpstreamBranchPoint()
1633         if len(upstream) == 0:
1634             die("Cannot find upstream branchpoint for rebase")
1635
1636         # the branchpoint may be p4/foo~3, so strip off the parent
1637         upstream = re.sub("~[0-9]+$", "", upstream)
1638
1639         print "Rebasing the current branch onto %s" % upstream
1640         oldHead = read_pipe("git rev-parse HEAD").strip()
1641         system("git rebase %s" % upstream)
1642         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1643         return True
1644
1645 class P4Clone(P4Sync):
1646     def __init__(self):
1647         P4Sync.__init__(self)
1648         self.description = "Creates a new git repository and imports from Perforce into it"
1649         self.usage = "usage: %prog [options] //depot/path[@revRange]"
1650         self.options.append(
1651             optparse.make_option("--destination", dest="cloneDestination",
1652                                  action='store', default=None,
1653                                  help="where to leave result of the clone"))
1654         self.cloneDestination = None
1655         self.needsGit = False
1656
1657     def defaultDestination(self, args):
1658         ## TODO: use common prefix of args?
1659         depotPath = args[0]
1660         depotDir = re.sub("(@[^@]*)$", "", depotPath)
1661         depotDir = re.sub("(#[^#]*)$", "", depotDir)
1662         depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1663         depotDir = re.sub(r"/$", "", depotDir)
1664         return os.path.split(depotDir)[1]
1665
1666     def run(self, args):
1667         if len(args) < 1:
1668             return False
1669
1670         if self.keepRepoPath and not self.cloneDestination:
1671             sys.stderr.write("Must specify destination for --keep-path\n")
1672             sys.exit(1)
1673
1674         depotPaths = args
1675
1676         if not self.cloneDestination and len(depotPaths) > 1:
1677             self.cloneDestination = depotPaths[-1]
1678             depotPaths = depotPaths[:-1]
1679
1680         for p in depotPaths:
1681             if not p.startswith("//"):
1682                 return False
1683
1684         if not self.cloneDestination:
1685             self.cloneDestination = self.defaultDestination(args)
1686
1687         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1688         if not os.path.exists(self.cloneDestination):
1689             os.makedirs(self.cloneDestination)
1690         os.chdir(self.cloneDestination)
1691         system("git init")
1692         self.gitdir = os.getcwd() + "/.git"
1693         if not P4Sync.run(self, depotPaths):
1694             return False
1695         if self.branch != "master":
1696             if gitBranchExists("refs/remotes/p4/master"):
1697                 system("git branch master refs/remotes/p4/master")
1698                 system("git checkout -f")
1699             else:
1700                 print "Could not detect main branch. No checkout/master branch created."
1701
1702         return True
1703
1704 class P4Branches(Command):
1705     def __init__(self):
1706         Command.__init__(self)
1707         self.options = [ ]
1708         self.description = ("Shows the git branches that hold imports and their "
1709                             + "corresponding perforce depot paths")
1710         self.verbose = False
1711
1712     def run(self, args):
1713         if originP4BranchesExist():
1714             createOrUpdateBranchesFromOrigin()
1715
1716         cmdline = "git rev-parse --symbolic "
1717         cmdline += " --remotes"
1718
1719         for line in read_pipe_lines(cmdline):
1720             line = line.strip()
1721
1722             if not line.startswith('p4/') or line == "p4/HEAD":
1723                 continue
1724             branch = line
1725
1726             log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1727             settings = extractSettingsGitLog(log)
1728
1729             print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1730         return True
1731
1732 class HelpFormatter(optparse.IndentedHelpFormatter):
1733     def __init__(self):
1734         optparse.IndentedHelpFormatter.__init__(self)
1735
1736     def format_description(self, description):
1737         if description:
1738             return description + "\n"
1739         else:
1740             return ""
1741
1742 def printUsage(commands):
1743     print "usage: %s <command> [options]" % sys.argv[0]
1744     print ""
1745     print "valid commands: %s" % ", ".join(commands)
1746     print ""
1747     print "Try %s <command> --help for command specific help." % sys.argv[0]
1748     print ""
1749
1750 commands = {
1751     "debug" : P4Debug,
1752     "submit" : P4Submit,
1753     "commit" : P4Submit,
1754     "sync" : P4Sync,
1755     "rebase" : P4Rebase,
1756     "clone" : P4Clone,
1757     "rollback" : P4RollBack,
1758     "branches" : P4Branches
1759 }
1760
1761
1762 def main():
1763     if len(sys.argv[1:]) == 0:
1764         printUsage(commands.keys())
1765         sys.exit(2)
1766
1767     cmd = ""
1768     cmdName = sys.argv[1]
1769     try:
1770         klass = commands[cmdName]
1771         cmd = klass()
1772     except KeyError:
1773         print "unknown command %s" % cmdName
1774         print ""
1775         printUsage(commands.keys())
1776         sys.exit(2)
1777
1778     options = cmd.options
1779     cmd.gitdir = os.environ.get("GIT_DIR", None)
1780
1781     args = sys.argv[2:]
1782
1783     if len(options) > 0:
1784         options.append(optparse.make_option("--git-dir", dest="gitdir"))
1785
1786         parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1787                                        options,
1788                                        description = cmd.description,
1789                                        formatter = HelpFormatter())
1790
1791         (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1792     global verbose
1793     verbose = cmd.verbose
1794     if cmd.needsGit:
1795         if cmd.gitdir == None:
1796             cmd.gitdir = os.path.abspath(".git")
1797             if not isValidGitDir(cmd.gitdir):
1798                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1799                 if os.path.exists(cmd.gitdir):
1800                     cdup = read_pipe("git rev-parse --show-cdup").strip()
1801                     if len(cdup) > 0:
1802                         os.chdir(cdup);
1803
1804         if not isValidGitDir(cmd.gitdir):
1805             if isValidGitDir(cmd.gitdir + "/.git"):
1806                 cmd.gitdir += "/.git"
1807             else:
1808                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1809
1810         os.environ["GIT_DIR"] = cmd.gitdir
1811
1812     if not cmd.run(args):
1813         parser.print_help()
1814
1815
1816 if __name__ == '__main__':
1817     main()