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, subprocess, shelve
  12 import tempfile, getopt, os.path, time, platform
  13 import re
  14
  15 verbose = False
  16
  17
  18 def p4_build_cmd(cmd):
  19     """Build a suitable p4 command line.
  20
  21     This consolidates building and returning a p4 command line into one
  22     location. It means that hooking into the environment, or other configuration
  23     can be done more easily.
  24     """
  25     real_cmd = ["p4"]
  26
  27     user = gitConfig("git-p4.user")
  28     if len(user) > 0:
  29         real_cmd += ["-u",user]
  30
  31     password = gitConfig("git-p4.password")
  32     if len(password) > 0:
  33         real_cmd += ["-P", password]
  34
  35     port = gitConfig("git-p4.port")
  36     if len(port) > 0:
  37         real_cmd += ["-p", port]
  38
  39     host = gitConfig("git-p4.host")
  40     if len(host) > 0:
  41         real_cmd += ["-h", host]
  42
  43     client = gitConfig("git-p4.client")
  44     if len(client) > 0:
  45         real_cmd += ["-c", client]
  46
  47
  48     if isinstance(cmd,basestring):
  49         real_cmd = ' '.join(real_cmd) + ' ' + cmd
  50     else:
  51         real_cmd += cmd
  52     return real_cmd
  53
  54 def chdir(dir):
  55     # P4 uses the PWD environment variable rather than getcwd(). Since we're
  56     # not using the shell, we have to set it ourselves.  This path could
  57     # be relative, so go there first, then figure out where we ended up.
  58     os.chdir(dir)
  59     os.environ['PWD'] = os.getcwd()
  60
  61 def die(msg):
  62     if verbose:
  63         raise Exception(msg)
  64     else:
  65         sys.stderr.write(msg + "\n")
  66         sys.exit(1)
  67
  68 def write_pipe(c, stdin):
  69     if verbose:
  70         sys.stderr.write('Writing pipe: %s\n' % str(c))
  71
  72     expand = isinstance(c,basestring)
  73     p = subprocess.Popen(c, stdin=subprocess.PIPE, shell=expand)
  74     pipe = p.stdin
  75     val = pipe.write(stdin)
  76     pipe.close()
  77     if p.wait():
  78         die('Command failed: %s' % str(c))
  79
  80     return val
  81
  82 def p4_write_pipe(c, stdin):
  83     real_cmd = p4_build_cmd(c)
  84     return write_pipe(real_cmd, stdin)
  85
  86 def read_pipe(c, ignore_error=False):
  87     if verbose:
  88         sys.stderr.write('Reading pipe: %s\n' % str(c))
  89
  90     expand = isinstance(c,basestring)
  91     p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
  92     pipe = p.stdout
  93     val = pipe.read()
  94     if p.wait() and not ignore_error:
  95         die('Command failed: %s' % str(c))
  96
  97     return val
  98
  99 def p4_read_pipe(c, ignore_error=False):
 100     real_cmd = p4_build_cmd(c)
 101     return read_pipe(real_cmd, ignore_error)
 102
 103 def read_pipe_lines(c):
 104     if verbose:
 105         sys.stderr.write('Reading pipe: %s\n' % str(c))
 106
 107     expand = isinstance(c, basestring)
 108     p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
 109     pipe = p.stdout
 110     val = pipe.readlines()
 111     if pipe.close() or p.wait():
 112         die('Command failed: %s' % str(c))
 113
 114     return val
 115
 116 def p4_read_pipe_lines(c):
 117     """Specifically invoke p4 on the command supplied. """
 118     real_cmd = p4_build_cmd(c)
 119     return read_pipe_lines(real_cmd)
 120
 121 def system(cmd):
 122     expand = isinstance(cmd,basestring)
 123     if verbose:
 124         sys.stderr.write("executing %s\n" % str(cmd))
 125     subprocess.check_call(cmd, shell=expand)
 126
 127 def p4_system(cmd):
 128     """Specifically invoke p4 as the system command. """
 129     real_cmd = p4_build_cmd(cmd)
 130     expand = isinstance(real_cmd, basestring)
 131     subprocess.check_call(real_cmd, shell=expand)
 132
 133 def p4_integrate(src, dest):
 134     p4_system(["integrate", "-Dt", src, dest])
 135
 136 def p4_sync(path):
 137     p4_system(["sync", path])
 138
 139 def p4_add(f):
 140     p4_system(["add", f])
 141
 142 def p4_delete(f):
 143     p4_system(["delete", f])
 144
 145 def p4_edit(f):
 146     p4_system(["edit", f])
 147
 148 def p4_revert(f):
 149     p4_system(["revert", f])
 150
 151 def p4_reopen(type, file):
 152     p4_system(["reopen", "-t", type, file])
 153
 154 #
 155 # Canonicalize the p4 type and return a tuple of the
 156 # base type, plus any modifiers.  See "p4 help filetypes"
 157 # for a list and explanation.
 158 #
 159 def split_p4_type(p4type):
 160
 161     p4_filetypes_historical = {
 162         "ctempobj": "binary+Sw",
 163         "ctext": "text+C",
 164         "cxtext": "text+Cx",
 165         "ktext": "text+k",
 166         "kxtext": "text+kx",
 167         "ltext": "text+F",
 168         "tempobj": "binary+FSw",
 169         "ubinary": "binary+F",
 170         "uresource": "resource+F",
 171         "uxbinary": "binary+Fx",
 172         "xbinary": "binary+x",
 173         "xltext": "text+Fx",
 174         "xtempobj": "binary+Swx",
 175         "xtext": "text+x",
 176         "xunicode": "unicode+x",
 177         "xutf16": "utf16+x",
 178     }
 179     if p4type in p4_filetypes_historical:
 180         p4type = p4_filetypes_historical[p4type]
 181     mods = ""
 182     s = p4type.split("+")
 183     base = s[0]
 184     mods = ""
 185     if len(s) > 1:
 186         mods = s[1]
 187     return (base, mods)
 188
 189
 190 def setP4ExecBit(file, mode):
 191     # Reopens an already open file and changes the execute bit to match
 192     # the execute bit setting in the passed in mode.
 193
 194     p4Type = "+x"
 195
 196     if not isModeExec(mode):
 197         p4Type = getP4OpenedType(file)
 198         p4Type = re.sub('^([cku]?)x(.*)', '\\1\\2', p4Type)
 199         p4Type = re.sub('(.*?\+.*?)x(.*?)', '\\1\\2', p4Type)
 200         if p4Type[-1] == "+":
 201             p4Type = p4Type[0:-1]
 202
 203     p4_reopen(p4Type, file)
 204
 205 def getP4OpenedType(file):
 206     # Returns the perforce file type for the given file.
 207
 208     result = p4_read_pipe(["opened", file])
 209     match = re.match(".*\((.+)\)\r?$", result)
 210     if match:
 211         return match.group(1)
 212     else:
 213         die("Could not determine file type for %s (result: '%s')" % (file, result))
 214
 215 def diffTreePattern():
 216     # This is a simple generator for the diff tree regex pattern. This could be
 217     # a class variable if this and parseDiffTreeEntry were a part of a class.
 218     pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)')
 219     while True:
 220         yield pattern
 221
 222 def parseDiffTreeEntry(entry):
 223     """Parses a single diff tree entry into its component elements.
 224
 225     See git-diff-tree(1) manpage for details about the format of the diff
 226     output. This method returns a dictionary with the following elements:
 227
 228     src_mode - The mode of the source file
 229     dst_mode - The mode of the destination file
 230     src_sha1 - The sha1 for the source file
 231     dst_sha1 - The sha1 fr the destination file
 232     status - The one letter status of the diff (i.e. 'A', 'M', 'D', etc)
 233     status_score - The score for the status (applicable for 'C' and 'R'
 234                    statuses). This is None if there is no score.
 235     src - The path for the source file.
 236     dst - The path for the destination file. This is only present for
 237           copy or renames. If it is not present, this is None.
 238
 239     If the pattern is not matched, None is returned."""
 240
 241     match = diffTreePattern().next().match(entry)
 242     if match:
 243         return {
 244             'src_mode': match.group(1),
 245             'dst_mode': match.group(2),
 246             'src_sha1': match.group(3),
 247             'dst_sha1': match.group(4),
 248             'status': match.group(5),
 249             'status_score': match.group(6),
 250             'src': match.group(7),
 251             'dst': match.group(10)
 252         }
 253     return None
 254
 255 def isModeExec(mode):
 256     # Returns True if the given git mode represents an executable file,
 257     # otherwise False.
 258     return mode[-3:] == "755"
 259
 260 def isModeExecChanged(src_mode, dst_mode):
 261     return isModeExec(src_mode) != isModeExec(dst_mode)
 262
 263 def p4CmdList(cmd, stdin=None, stdin_mode='w+b', cb=None):
 264
 265     if isinstance(cmd,basestring):
 266         cmd = "-G " + cmd
 267         expand = True
 268     else:
 269         cmd = ["-G"] + cmd
 270         expand = False
 271
 272     cmd = p4_build_cmd(cmd)
 273     if verbose:
 274         sys.stderr.write("Opening pipe: %s\n" % str(cmd))
 275
 276     # Use a temporary file to avoid deadlocks without
 277     # subprocess.communicate(), which would put another copy
 278     # of stdout into memory.
 279     stdin_file = None
 280     if stdin is not None:
 281         stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
 282         if isinstance(stdin,basestring):
 283             stdin_file.write(stdin)
 284         else:
 285             for i in stdin:
 286                 stdin_file.write(i + '\n')
 287         stdin_file.flush()
 288         stdin_file.seek(0)
 289
 290     p4 = subprocess.Popen(cmd,
 291                           shell=expand,
 292                           stdin=stdin_file,
 293                           stdout=subprocess.PIPE)
 294
 295     result = []
 296     try:
 297         while True:
 298             entry = marshal.load(p4.stdout)
 299             if cb is not None:
 300                 cb(entry)
 301             else:
 302                 result.append(entry)
 303     except EOFError:
 304         pass
 305     exitCode = p4.wait()
 306     if exitCode != 0:
 307         entry = {}
 308         entry["p4ExitCode"] = exitCode
 309         result.append(entry)
 310
 311     return result
 312
 313 def p4Cmd(cmd):
 314     list = p4CmdList(cmd)
 315     result = {}
 316     for entry in list:
 317         result.update(entry)
 318     return result;
 319
 320 def p4Where(depotPath):
 321     if not depotPath.endswith("/"):
 322         depotPath += "/"
 323     depotPath = depotPath + "..."
 324     outputList = p4CmdList(["where", depotPath])
 325     output = None
 326     for entry in outputList:
 327         if "depotFile" in entry:
 328             if entry["depotFile"] == depotPath:
 329                 output = entry
 330                 break
 331         elif "data" in entry:
 332             data = entry.get("data")
 333             space = data.find(" ")
 334             if data[:space] == depotPath:
 335                 output = entry
 336                 break
 337     if output == None:
 338         return ""
 339     if output["code"] == "error":
 340         return ""
 341     clientPath = ""
 342     if "path" in output:
 343         clientPath = output.get("path")
 344     elif "data" in output:
 345         data = output.get("data")
 346         lastSpace = data.rfind(" ")
 347         clientPath = data[lastSpace + 1:]
 348
 349     if clientPath.endswith("..."):
 350         clientPath = clientPath[:-3]
 351     return clientPath
 352
 353 def currentGitBranch():
 354     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
 355
 356 def isValidGitDir(path):
 357     if (os.path.exists(path + "/HEAD")
 358         and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
 359         return True;
 360     return False
 361
 362 def parseRevision(ref):
 363     return read_pipe("git rev-parse %s" % ref).strip()
 364
 365 def branchExists(ref):
 366     rev = read_pipe(["git", "rev-parse", "-q", "--verify", ref],
 367                      ignore_error=True)
 368     return len(rev) > 0
 369
 370 def extractLogMessageFromGitCommit(commit):
 371     logMessage = ""
 372
 373     ## fixme: title is first line of commit, not 1st paragraph.
 374     foundTitle = False
 375     for log in read_pipe_lines("git cat-file commit %s" % commit):
 376        if not foundTitle:
 377            if len(log) == 1:
 378                foundTitle = True
 379            continue
 380
 381        logMessage += log
 382     return logMessage
 383
 384 def extractSettingsGitLog(log):
 385     values = {}
 386     for line in log.split("\n"):
 387         line = line.strip()
 388         m = re.search (r"^ *\[git-p4: (.*)\]$", line)
 389         if not m:
 390             continue
 391
 392         assignments = m.group(1).split (':')
 393         for a in assignments:
 394             vals = a.split ('=')
 395             key = vals[0].strip()
 396             val = ('='.join (vals[1:])).strip()
 397             if val.endswith ('\"') and val.startswith('"'):
 398                 val = val[1:-1]
 399
 400             values[key] = val
 401
 402     paths = values.get("depot-paths")
 403     if not paths:
 404         paths = values.get("depot-path")
 405     if paths:
 406         values['depot-paths'] = paths.split(',')
 407     return values
 408
 409 def gitBranchExists(branch):
 410     proc = subprocess.Popen(["git", "rev-parse", branch],
 411                             stderr=subprocess.PIPE, stdout=subprocess.PIPE);
 412     return proc.wait() == 0;
 413
 414 _gitConfig = {}
 415 def gitConfig(key, args = None): # set args to "--bool", for instance
 416     if not _gitConfig.has_key(key):
 417         argsFilter = ""
 418         if args != None:
 419             argsFilter = "%s " % args
 420         cmd = "git config %s%s" % (argsFilter, key)
 421         _gitConfig[key] = read_pipe(cmd, ignore_error=True).strip()
 422     return _gitConfig[key]
 423
 424 def gitConfigList(key):
 425     if not _gitConfig.has_key(key):
 426         _gitConfig[key] = read_pipe("git config --get-all %s" % key, ignore_error=True).strip().split(os.linesep)
 427     return _gitConfig[key]
 428
 429 def p4BranchesInGit(branchesAreInRemotes = True):
 430     branches = {}
 431
 432     cmdline = "git rev-parse --symbolic "
 433     if branchesAreInRemotes:
 434         cmdline += " --remotes"
 435     else:
 436         cmdline += " --branches"
 437
 438     for line in read_pipe_lines(cmdline):
 439         line = line.strip()
 440
 441         ## only import to p4/
 442         if not line.startswith('p4/') or line == "p4/HEAD":
 443             continue
 444         branch = line
 445
 446         # strip off p4
 447         branch = re.sub ("^p4/", "", line)
 448
 449         branches[branch] = parseRevision(line)
 450     return branches
 451
 452 def findUpstreamBranchPoint(head = "HEAD"):
 453     branches = p4BranchesInGit()
 454     # map from depot-path to branch name
 455     branchByDepotPath = {}
 456     for branch in branches.keys():
 457         tip = branches[branch]
 458         log = extractLogMessageFromGitCommit(tip)
 459         settings = extractSettingsGitLog(log)
 460         if settings.has_key("depot-paths"):
 461             paths = ",".join(settings["depot-paths"])
 462             branchByDepotPath[paths] = "remotes/p4/" + branch
 463
 464     settings = None
 465     parent = 0
 466     while parent < 65535:
 467         commit = head + "~%s" % parent
 468         log = extractLogMessageFromGitCommit(commit)
 469         settings = extractSettingsGitLog(log)
 470         if settings.has_key("depot-paths"):
 471             paths = ",".join(settings["depot-paths"])
 472             if branchByDepotPath.has_key(paths):
 473                 return [branchByDepotPath[paths], settings]
 474
 475         parent = parent + 1
 476
 477     return ["", settings]
 478
 479 def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True):
 480     if not silent:
 481         print ("Creating/updating branch(es) in %s based on origin branch(es)"
 482                % localRefPrefix)
 483
 484     originPrefix = "origin/p4/"
 485
 486     for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
 487         line = line.strip()
 488         if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
 489             continue
 490
 491         headName = line[len(originPrefix):]
 492         remoteHead = localRefPrefix + headName
 493         originHead = line
 494
 495         original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
 496         if (not original.has_key('depot-paths')
 497             or not original.has_key('change')):
 498             continue
 499
 500         update = False
 501         if not gitBranchExists(remoteHead):
 502             if verbose:
 503                 print "creating %s" % remoteHead
 504             update = True
 505         else:
 506             settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
 507             if settings.has_key('change') > 0:
 508                 if settings['depot-paths'] == original['depot-paths']:
 509                     originP4Change = int(original['change'])
 510                     p4Change = int(settings['change'])
 511                     if originP4Change > p4Change:
 512                         print ("%s (%s) is newer than %s (%s). "
 513                                "Updating p4 branch from origin."
 514                                % (originHead, originP4Change,
 515                                   remoteHead, p4Change))
 516                         update = True
 517                 else:
 518                     print ("Ignoring: %s was imported from %s while "
 519                            "%s was imported from %s"
 520                            % (originHead, ','.join(original['depot-paths']),
 521                               remoteHead, ','.join(settings['depot-paths'])))
 522
 523         if update:
 524             system("git update-ref %s %s" % (remoteHead, originHead))
 525
 526 def originP4BranchesExist():
 527         return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
 528
 529 def p4ChangesForPaths(depotPaths, changeRange):
 530     assert depotPaths
 531     cmd = ['changes']
 532     for p in depotPaths:
 533         cmd += ["%s...%s" % (p, changeRange)]
 534     output = p4_read_pipe_lines(cmd)
 535
 536     changes = {}
 537     for line in output:
 538         changeNum = int(line.split(" ")[1])
 539         changes[changeNum] = True
 540
 541     changelist = changes.keys()
 542     changelist.sort()
 543     return changelist
 544
 545 def p4PathStartsWith(path, prefix):
 546     # This method tries to remedy a potential mixed-case issue:
 547     #
 548     # If UserA adds  //depot/DirA/file1
 549     # and UserB adds //depot/dira/file2
 550     #
 551     # we may or may not have a problem. If you have core.ignorecase=true,
 552     # we treat DirA and dira as the same directory
 553     ignorecase = gitConfig("core.ignorecase", "--bool") == "true"
 554     if ignorecase:
 555         return path.lower().startswith(prefix.lower())
 556     return path.startswith(prefix)
 557
 558 class Command:
 559     def __init__(self):
 560         self.usage = "usage: %prog [options]"
 561         self.needsGit = True
 562
 563 class P4UserMap:
 564     def __init__(self):
 565         self.userMapFromPerforceServer = False
 566
 567     def getUserCacheFilename(self):
 568         home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
 569         return home + "/.gitp4-usercache.txt"
 570
 571     def getUserMapFromPerforceServer(self):
 572         if self.userMapFromPerforceServer:
 573             return
 574         self.users = {}
 575         self.emails = {}
 576
 577         for output in p4CmdList("users"):
 578             if not output.has_key("User"):
 579                 continue
 580             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
 581             self.emails[output["Email"]] = output["User"]
 582
 583
 584         s = ''
 585         for (key, val) in self.users.items():
 586             s += "%s\t%s\n" % (key.expandtabs(1), val.expandtabs(1))
 587
 588         open(self.getUserCacheFilename(), "wb").write(s)
 589         self.userMapFromPerforceServer = True
 590
 591     def loadUserMapFromCache(self):
 592         self.users = {}
 593         self.userMapFromPerforceServer = False
 594         try:
 595             cache = open(self.getUserCacheFilename(), "rb")
 596             lines = cache.readlines()
 597             cache.close()
 598             for line in lines:
 599                 entry = line.strip().split("\t")
 600                 self.users[entry[0]] = entry[1]
 601         except IOError:
 602             self.getUserMapFromPerforceServer()
 603
 604 class P4Debug(Command):
 605     def __init__(self):
 606         Command.__init__(self)
 607         self.options = [
 608             optparse.make_option("--verbose", dest="verbose", action="store_true",
 609                                  default=False),
 610             ]
 611         self.description = "A tool to debug the output of p4 -G."
 612         self.needsGit = False
 613         self.verbose = False
 614
 615     def run(self, args):
 616         j = 0
 617         for output in p4CmdList(args):
 618             print 'Element: %d' % j
 619             j += 1
 620             print output
 621         return True
 622
 623 class P4RollBack(Command):
 624     def __init__(self):
 625         Command.__init__(self)
 626         self.options = [
 627             optparse.make_option("--verbose", dest="verbose", action="store_true"),
 628             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
 629         ]
 630         self.description = "A tool to debug the multi-branch import. Don't use :)"
 631         self.verbose = False
 632         self.rollbackLocalBranches = False
 633
 634     def run(self, args):
 635         if len(args) != 1:
 636             return False
 637         maxChange = int(args[0])
 638
 639         if "p4ExitCode" in p4Cmd("changes -m 1"):
 640             die("Problems executing p4");
 641
 642         if self.rollbackLocalBranches:
 643             refPrefix = "refs/heads/"
 644             lines = read_pipe_lines("git rev-parse --symbolic --branches")
 645         else:
 646             refPrefix = "refs/remotes/"
 647             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
 648
 649         for line in lines:
 650             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
 651                 line = line.strip()
 652                 ref = refPrefix + line
 653                 log = extractLogMessageFromGitCommit(ref)
 654                 settings = extractSettingsGitLog(log)
 655
 656                 depotPaths = settings['depot-paths']
 657                 change = settings['change']
 658
 659                 changed = False
 660
 661                 if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
 662                                                            for p in depotPaths]))) == 0:
 663                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
 664                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
 665                     continue
 666
 667                 while change and int(change) > maxChange:
 668                     changed = True
 669                     if self.verbose:
 670                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
 671                     system("git update-ref %s \"%s^\"" % (ref, ref))
 672                     log = extractLogMessageFromGitCommit(ref)
 673                     settings =  extractSettingsGitLog(log)
 674
 675
 676                     depotPaths = settings['depot-paths']
 677                     change = settings['change']
 678
 679                 if changed:
 680                     print "%s rewound to %s" % (ref, change)
 681
 682         return True
 683
 684 class P4Submit(Command, P4UserMap):
 685     def __init__(self):
 686         Command.__init__(self)
 687         P4UserMap.__init__(self)
 688         self.options = [
 689                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
 690                 optparse.make_option("--origin", dest="origin"),
 691                 optparse.make_option("-M", dest="detectRenames", action="store_true"),
 692                 # preserve the user, requires relevant p4 permissions
 693                 optparse.make_option("--preserve-user", dest="preserveUser", action="store_true"),
 694         ]
 695         self.description = "Submit changes from git to the perforce depot."
 696         self.usage += " [name of git branch to submit into perforce depot]"
 697         self.interactive = True
 698         self.origin = ""
 699         self.detectRenames = False
 700         self.verbose = False
 701         self.preserveUser = gitConfig("git-p4.preserveUser").lower() == "true"
 702         self.isWindows = (platform.system() == "Windows")
 703         self.myP4UserId = None
 704
 705     def check(self):
 706         if len(p4CmdList("opened ...")) > 0:
 707             die("You have files opened with perforce! Close them before starting the sync.")
 708
 709     # replaces everything between 'Description:' and the next P4 submit template field with the
 710     # commit message
 711     def prepareLogMessage(self, template, message):
 712         result = ""
 713
 714         inDescriptionSection = False
 715
 716         for line in template.split("\n"):
 717             if line.startswith("#"):
 718                 result += line + "\n"
 719                 continue
 720
 721             if inDescriptionSection:
 722                 if line.startswith("Files:") or line.startswith("Jobs:"):
 723                     inDescriptionSection = False
 724                 else:
 725                     continue
 726             else:
 727                 if line.startswith("Description:"):
 728                     inDescriptionSection = True
 729                     line += "\n"
 730                     for messageLine in message.split("\n"):
 731                         line += "\t" + messageLine + "\n"
 732
 733             result += line + "\n"
 734
 735         return result
 736
 737     def p4UserForCommit(self,id):
 738         # Return the tuple (perforce user,git email) for a given git commit id
 739         self.getUserMapFromPerforceServer()
 740         gitEmail = read_pipe("git log --max-count=1 --format='%%ae' %s" % id)
 741         gitEmail = gitEmail.strip()
 742         if not self.emails.has_key(gitEmail):
 743             return (None,gitEmail)
 744         else:
 745             return (self.emails[gitEmail],gitEmail)
 746
 747     def checkValidP4Users(self,commits):
 748         # check if any git authors cannot be mapped to p4 users
 749         for id in commits:
 750             (user,email) = self.p4UserForCommit(id)
 751             if not user:
 752                 msg = "Cannot find p4 user for email %s in commit %s." % (email, id)
 753                 if gitConfig('git-p4.allowMissingP4Users').lower() == "true":
 754                     print "%s" % msg
 755                 else:
 756                     die("Error: %s\nSet git-p4.allowMissingP4Users to true to allow this." % msg)
 757
 758     def lastP4Changelist(self):
 759         # Get back the last changelist number submitted in this client spec. This
 760         # then gets used to patch up the username in the change. If the same
 761         # client spec is being used by multiple processes then this might go
 762         # wrong.
 763         results = p4CmdList("client -o")        # find the current client
 764         client = None
 765         for r in results:
 766             if r.has_key('Client'):
 767                 client = r['Client']
 768                 break
 769         if not client:
 770             die("could not get client spec")
 771         results = p4CmdList(["changes", "-c", client, "-m", "1"])
 772         for r in results:
 773             if r.has_key('change'):
 774                 return r['change']
 775         die("Could not get changelist number for last submit - cannot patch up user details")
 776
 777     def modifyChangelistUser(self, changelist, newUser):
 778         # fixup the user field of a changelist after it has been submitted.
 779         changes = p4CmdList("change -o %s" % changelist)
 780         if len(changes) != 1:
 781             die("Bad output from p4 change modifying %s to user %s" %
 782                 (changelist, newUser))
 783
 784         c = changes[0]
 785         if c['User'] == newUser: return   # nothing to do
 786         c['User'] = newUser
 787         input = marshal.dumps(c)
 788
 789         result = p4CmdList("change -f -i", stdin=input)
 790         for r in result:
 791             if r.has_key('code'):
 792                 if r['code'] == 'error':
 793                     die("Could not modify user field of changelist %s to %s:%s" % (changelist, newUser, r['data']))
 794             if r.has_key('data'):
 795                 print("Updated user field for changelist %s to %s" % (changelist, newUser))
 796                 return
 797         die("Could not modify user field of changelist %s to %s" % (changelist, newUser))
 798
 799     def canChangeChangelists(self):
 800         # check to see if we have p4 admin or super-user permissions, either of
 801         # which are required to modify changelists.
 802         results = p4CmdList("protects %s" % self.depotPath)
 803         for r in results:
 804             if r.has_key('perm'):
 805                 if r['perm'] == 'admin':
 806                     return 1
 807                 if r['perm'] == 'super':
 808                     return 1
 809         return 0
 810
 811     def p4UserId(self):
 812         if self.myP4UserId:
 813             return self.myP4UserId
 814
 815         results = p4CmdList("user -o")
 816         for r in results:
 817             if r.has_key('User'):
 818                 self.myP4UserId = r['User']
 819                 return r['User']
 820         die("Could not find your p4 user id")
 821
 822     def p4UserIsMe(self, p4User):
 823         # return True if the given p4 user is actually me
 824         me = self.p4UserId()
 825         if not p4User or p4User != me:
 826             return False
 827         else:
 828             return True
 829
 830     def prepareSubmitTemplate(self):
 831         # remove lines in the Files section that show changes to files outside the depot path we're committing into
 832         template = ""
 833         inFilesSection = False
 834         for line in p4_read_pipe_lines(['change', '-o']):
 835             if line.endswith("\r\n"):
 836                 line = line[:-2] + "\n"
 837             if inFilesSection:
 838                 if line.startswith("\t"):
 839                     # path starts and ends with a tab
 840                     path = line[1:]
 841                     lastTab = path.rfind("\t")
 842                     if lastTab != -1:
 843                         path = path[:lastTab]
 844                         if not p4PathStartsWith(path, self.depotPath):
 845                             continue
 846                 else:
 847                     inFilesSection = False
 848             else:
 849                 if line.startswith("Files:"):
 850                     inFilesSection = True
 851
 852             template += line
 853
 854         return template
 855
 856     def edit_template(self, template_file):
 857         """Invoke the editor to let the user change the submission
 858            message.  Return true if okay to continue with the submit."""
 859
 860         # if configured to skip the editing part, just submit
 861         if gitConfig("git-p4.skipSubmitEdit") == "true":
 862             return True
 863
 864         # look at the modification time, to check later if the user saved
 865         # the file
 866         mtime = os.stat(template_file).st_mtime
 867
 868         # invoke the editor
 869         if os.environ.has_key("P4EDITOR"):
 870             editor = os.environ.get("P4EDITOR")
 871         else:
 872             editor = read_pipe("git var GIT_EDITOR").strip()
 873         system(editor + " " + template_file)
 874
 875         # If the file was not saved, prompt to see if this patch should
 876         # be skipped.  But skip this verification step if configured so.
 877         if gitConfig("git-p4.skipSubmitEditCheck") == "true":
 878             return True
 879
 880         # modification time updated means user saved the file
 881         if os.stat(template_file).st_mtime > mtime:
 882             return True
 883
 884         while True:
 885             response = raw_input("Submit template unchanged. Submit anyway? [y]es, [n]o (skip this patch) ")
 886             if response == 'y':
 887                 return True
 888             if response == 'n':
 889                 return False
 890
 891     def applyCommit(self, id):
 892         print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
 893
 894         (p4User, gitEmail) = self.p4UserForCommit(id)
 895
 896         if not self.detectRenames:
 897             # If not explicitly set check the config variable
 898             self.detectRenames = gitConfig("git-p4.detectRenames")
 899
 900         if self.detectRenames.lower() == "false" or self.detectRenames == "":
 901             diffOpts = ""
 902         elif self.detectRenames.lower() == "true":
 903             diffOpts = "-M"
 904         else:
 905             diffOpts = "-M%s" % self.detectRenames
 906
 907         detectCopies = gitConfig("git-p4.detectCopies")
 908         if detectCopies.lower() == "true":
 909             diffOpts += " -C"
 910         elif detectCopies != "" and detectCopies.lower() != "false":
 911             diffOpts += " -C%s" % detectCopies
 912
 913         if gitConfig("git-p4.detectCopiesHarder", "--bool") == "true":
 914             diffOpts += " --find-copies-harder"
 915
 916         diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id))
 917         filesToAdd = set()
 918         filesToDelete = set()
 919         editedFiles = set()
 920         filesToChangeExecBit = {}
 921         for line in diff:
 922             diff = parseDiffTreeEntry(line)
 923             modifier = diff['status']
 924             path = diff['src']
 925             if modifier == "M":
 926                 p4_edit(path)
 927                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 928                     filesToChangeExecBit[path] = diff['dst_mode']
 929                 editedFiles.add(path)
 930             elif modifier == "A":
 931                 filesToAdd.add(path)
 932                 filesToChangeExecBit[path] = diff['dst_mode']
 933                 if path in filesToDelete:
 934                     filesToDelete.remove(path)
 935             elif modifier == "D":
 936                 filesToDelete.add(path)
 937                 if path in filesToAdd:
 938                     filesToAdd.remove(path)
 939             elif modifier == "C":
 940                 src, dest = diff['src'], diff['dst']
 941                 p4_integrate(src, dest)
 942                 if diff['src_sha1'] != diff['dst_sha1']:
 943                     p4_edit(dest)
 944                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 945                     p4_edit(dest)
 946                     filesToChangeExecBit[dest] = diff['dst_mode']
 947                 os.unlink(dest)
 948                 editedFiles.add(dest)
 949             elif modifier == "R":
 950                 src, dest = diff['src'], diff['dst']
 951                 p4_integrate(src, dest)
 952                 if diff['src_sha1'] != diff['dst_sha1']:
 953                     p4_edit(dest)
 954                 if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
 955                     p4_edit(dest)
 956                     filesToChangeExecBit[dest] = diff['dst_mode']
 957                 os.unlink(dest)
 958                 editedFiles.add(dest)
 959                 filesToDelete.add(src)
 960             else:
 961                 die("unknown modifier %s for %s" % (modifier, path))
 962
 963         diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
 964         patchcmd = diffcmd + " | git apply "
 965         tryPatchCmd = patchcmd + "--check -"
 966         applyPatchCmd = patchcmd + "--check --apply -"
 967
 968         if os.system(tryPatchCmd) != 0:
 969             print "Unfortunately applying the change failed!"
 970             print "What do you want to do?"
 971             response = "x"
 972             while response != "s" and response != "a" and response != "w":
 973                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
 974                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
 975             if response == "s":
 976                 print "Skipping! Good luck with the next patches..."
 977                 for f in editedFiles:
 978                     p4_revert(f)
 979                 for f in filesToAdd:
 980                     os.remove(f)
 981                 return
 982             elif response == "a":
 983                 os.system(applyPatchCmd)
 984                 if len(filesToAdd) > 0:
 985                     print "You may also want to call p4 add on the following files:"
 986                     print " ".join(filesToAdd)
 987                 if len(filesToDelete):
 988                     print "The following files should be scheduled for deletion with p4 delete:"
 989                     print " ".join(filesToDelete)
 990                 die("Please resolve and submit the conflict manually and "
 991                     + "continue afterwards with git-p4 submit --continue")
 992             elif response == "w":
 993                 system(diffcmd + " > patch.txt")
 994                 print "Patch saved to patch.txt in %s !" % self.clientPath
 995                 die("Please resolve and submit the conflict manually and "
 996                     "continue afterwards with git-p4 submit --continue")
 997
 998         system(applyPatchCmd)
 999
1000         for f in filesToAdd:
1001             p4_add(f)
1002         for f in filesToDelete:
1003             p4_revert(f)
1004             p4_delete(f)
1005
1006         # Set/clear executable bits
1007         for f in filesToChangeExecBit.keys():
1008             mode = filesToChangeExecBit[f]
1009             setP4ExecBit(f, mode)
1010
1011         logMessage = extractLogMessageFromGitCommit(id)
1012         logMessage = logMessage.strip()
1013
1014         template = self.prepareSubmitTemplate()
1015
1016         if self.interactive:
1017             submitTemplate = self.prepareLogMessage(template, logMessage)
1018
1019             if self.preserveUser:
1020                submitTemplate = submitTemplate + ("\n######## Actual user %s, modified after commit\n" % p4User)
1021
1022             if os.environ.has_key("P4DIFF"):
1023                 del(os.environ["P4DIFF"])
1024             diff = ""
1025             for editedFile in editedFiles:
1026                 diff += p4_read_pipe(['diff', '-du', editedFile])
1027
1028             newdiff = ""
1029             for newFile in filesToAdd:
1030                 newdiff += "==== new file ====\n"
1031                 newdiff += "--- /dev/null\n"
1032                 newdiff += "+++ %s\n" % newFile
1033                 f = open(newFile, "r")
1034                 for line in f.readlines():
1035                     newdiff += "+" + line
1036                 f.close()
1037
1038             if self.checkAuthorship and not self.p4UserIsMe(p4User):
1039                 submitTemplate += "######## git author %s does not match your p4 account.\n" % gitEmail
1040                 submitTemplate += "######## Use git-p4 option --preserve-user to modify authorship\n"
1041                 submitTemplate += "######## Use git-p4 config git-p4.skipUserNameCheck hides this message.\n"
1042
1043             separatorLine = "######## everything below this line is just the diff #######\n"
1044
1045             (handle, fileName) = tempfile.mkstemp()
1046             tmpFile = os.fdopen(handle, "w+")
1047             if self.isWindows:
1048                 submitTemplate = submitTemplate.replace("\n", "\r\n")
1049                 separatorLine = separatorLine.replace("\n", "\r\n")
1050                 newdiff = newdiff.replace("\n", "\r\n")
1051             tmpFile.write(submitTemplate + separatorLine + diff + newdiff)
1052             tmpFile.close()
1053
1054             if self.edit_template(fileName):
1055                 # read the edited message and submit
1056                 tmpFile = open(fileName, "rb")
1057                 message = tmpFile.read()
1058                 tmpFile.close()
1059                 submitTemplate = message[:message.index(separatorLine)]
1060                 if self.isWindows:
1061                     submitTemplate = submitTemplate.replace("\r\n", "\n")
1062                 p4_write_pipe(['submit', '-i'], submitTemplate)
1063
1064                 if self.preserveUser:
1065                     if p4User:
1066                         # Get last changelist number. Cannot easily get it from
1067                         # the submit command output as the output is
1068                         # unmarshalled.
1069                         changelist = self.lastP4Changelist()
1070                         self.modifyChangelistUser(changelist, p4User)
1071             else:
1072                 # skip this patch
1073                 print "Submission cancelled, undoing p4 changes."
1074                 for f in editedFiles:
1075                     p4_revert(f)
1076                 for f in filesToAdd:
1077                     p4_revert(f)
1078                     os.remove(f)
1079
1080             os.remove(fileName)
1081         else:
1082             fileName = "submit.txt"
1083             file = open(fileName, "w+")
1084             file.write(self.prepareLogMessage(template, logMessage))
1085             file.close()
1086             print ("Perforce submit template written as %s. "
1087                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
1088                    % (fileName, fileName))
1089
1090     def run(self, args):
1091         if len(args) == 0:
1092             self.master = currentGitBranch()
1093             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
1094                 die("Detecting current git branch failed!")
1095         elif len(args) == 1:
1096             self.master = args[0]
1097             if not branchExists(self.master):
1098                 die("Branch %s does not exist" % self.master)
1099         else:
1100             return False
1101
1102         allowSubmit = gitConfig("git-p4.allowSubmit")
1103         if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","):
1104             die("%s is not in git-p4.allowSubmit" % self.master)
1105
1106         [upstream, settings] = findUpstreamBranchPoint()
1107         self.depotPath = settings['depot-paths'][0]
1108         if len(self.origin) == 0:
1109             self.origin = upstream
1110
1111         if self.preserveUser:
1112             if not self.canChangeChangelists():
1113                 die("Cannot preserve user names without p4 super-user or admin permissions")
1114
1115         if self.verbose:
1116             print "Origin branch is " + self.origin
1117
1118         if len(self.depotPath) == 0:
1119             print "Internal error: cannot locate perforce depot path from existing branches"
1120             sys.exit(128)
1121
1122         self.clientPath = p4Where(self.depotPath)
1123
1124         if len(self.clientPath) == 0:
1125             print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath
1126             sys.exit(128)
1127
1128         print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
1129         self.oldWorkingDirectory = os.getcwd()
1130
1131         # ensure the clientPath exists
1132         if not os.path.exists(self.clientPath):
1133             os.makedirs(self.clientPath)
1134
1135         chdir(self.clientPath)
1136         print "Synchronizing p4 checkout..."
1137         p4_sync("...")
1138         self.check()
1139
1140         commits = []
1141         for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
1142             commits.append(line.strip())
1143         commits.reverse()
1144
1145         if self.preserveUser or (gitConfig("git-p4.skipUserNameCheck") == "true"):
1146             self.checkAuthorship = False
1147         else:
1148             self.checkAuthorship = True
1149
1150         if self.preserveUser:
1151             self.checkValidP4Users(commits)
1152
1153         while len(commits) > 0:
1154             commit = commits[0]
1155             commits = commits[1:]
1156             self.applyCommit(commit)
1157             if not self.interactive:
1158                 break
1159
1160         if len(commits) == 0:
1161             print "All changes applied!"
1162             chdir(self.oldWorkingDirectory)
1163
1164             sync = P4Sync()
1165             sync.run([])
1166
1167             rebase = P4Rebase()
1168             rebase.rebase()
1169
1170         return True
1171
1172 class View(object):
1173     """Represent a p4 view ("p4 help views"), and map files in a
1174        repo according to the view."""
1175
1176     class Path(object):
1177         """A depot or client path, possibly containing wildcards.
1178            The only one supported is ... at the end, currently.
1179            Initialize with the full path, with //depot or //client."""
1180
1181         def __init__(self, path, is_depot):
1182             self.path = path
1183             self.is_depot = is_depot
1184             self.find_wildcards()
1185             # remember the prefix bit, useful for relative mappings
1186             m = re.match("(//[^/]+/)", self.path)
1187             if not m:
1188                 die("Path %s does not start with //prefix/" % self.path)
1189             prefix = m.group(1)
1190             if not self.is_depot:
1191                 # strip //client/ on client paths
1192                 self.path = self.path[len(prefix):]
1193
1194         def find_wildcards(self):
1195             """Make sure wildcards are valid, and set up internal
1196                variables."""
1197
1198             self.ends_triple_dot = False
1199             # There are three wildcards allowed in p4 views
1200             # (see "p4 help views").  This code knows how to
1201             # handle "..." (only at the end), but cannot deal with
1202             # "%%n" or "*".  Only check the depot_side, as p4 should
1203             # validate that the client_side matches too.
1204             if re.search(r'%%[1-9]', self.path):
1205                 die("Can't handle %%n wildcards in view: %s" % self.path)
1206             if self.path.find("*") >= 0:
1207                 die("Can't handle * wildcards in view: %s" % self.path)
1208             triple_dot_index = self.path.find("...")
1209             if triple_dot_index >= 0:
1210                 if not self.path.endswith("..."):
1211                     die("Can handle ... wildcard only at end of path: %s" %
1212                         self.path)
1213                 self.ends_triple_dot = True
1214
1215         def ensure_compatible(self, other_path):
1216             """Make sure the wildcards agree."""
1217             if self.ends_triple_dot != other_path.ends_triple_dot:
1218                  die("Both paths must end with ... if either does;\n" +
1219                      "paths: %s %s" % (self.path, other_path.path))
1220
1221         def match_wildcards(self, test_path):
1222             """See if this test_path matches us, and fill in the value
1223                of the wildcards if so.  Returns a tuple of
1224                (True|False, wildcards[]).  For now, only the ... at end
1225                is supported, so at most one wildcard."""
1226             if self.ends_triple_dot:
1227                 dotless = self.path[:-3]
1228                 if test_path.startswith(dotless):
1229                     wildcard = test_path[len(dotless):]
1230                     return (True, [ wildcard ])
1231             else:
1232                 if test_path == self.path:
1233                     return (True, [])
1234             return (False, [])
1235
1236         def match(self, test_path):
1237             """Just return if it matches; don't bother with the wildcards."""
1238             b, _ = self.match_wildcards(test_path)
1239             return b
1240
1241         def fill_in_wildcards(self, wildcards):
1242             """Return the relative path, with the wildcards filled in
1243                if there are any."""
1244             if self.ends_triple_dot:
1245                 return self.path[:-3] + wildcards[0]
1246             else:
1247                 return self.path
1248
1249     class Mapping(object):
1250         def __init__(self, depot_side, client_side, overlay, exclude):
1251             # depot_side is without the trailing /... if it had one
1252             self.depot_side = View.Path(depot_side, is_depot=True)
1253             self.client_side = View.Path(client_side, is_depot=False)
1254             self.overlay = overlay  # started with "+"
1255             self.exclude = exclude  # started with "-"
1256             assert not (self.overlay and self.exclude)
1257             self.depot_side.ensure_compatible(self.client_side)
1258
1259         def __str__(self):
1260             c = " "
1261             if self.overlay:
1262                 c = "+"
1263             if self.exclude:
1264                 c = "-"
1265             return "View.Mapping: %s%s -> %s" % \
1266                    (c, self.depot_side, self.client_side)
1267
1268         def map_depot_to_client(self, depot_path):
1269             """Calculate the client path if using this mapping on the
1270                given depot path; does not consider the effect of other
1271                mappings in a view.  Even excluded mappings are returned."""
1272             matches, wildcards = self.depot_side.match_wildcards(depot_path)
1273             if not matches:
1274                 return ""
1275             client_path = self.client_side.fill_in_wildcards(wildcards)
1276             return client_path
1277
1278     #
1279     # View methods
1280     #
1281     def __init__(self):
1282         self.mappings = []
1283
1284     def append(self, view_line):
1285         """Parse a view line, splitting it into depot and client
1286            sides.  Append to self.mappings, preserving order."""
1287
1288         # Split the view line into exactly two words.  P4 enforces
1289         # structure on these lines that simplifies this quite a bit.
1290         #
1291         # Either or both words may be double-quoted.
1292         # Single quotes do not matter.
1293         # Double-quote marks cannot occur inside the words.
1294         # A + or - prefix is also inside the quotes.
1295         # There are no quotes unless they contain a space.
1296         # The line is already white-space stripped.
1297         # The two words are separated by a single space.
1298         #
1299         if view_line[0] == '"':
1300             # First word is double quoted.  Find its end.
1301             close_quote_index = view_line.find('"', 1)
1302             if close_quote_index <= 0:
1303                 die("No first-word closing quote found: %s" % view_line)
1304             depot_side = view_line[1:close_quote_index]
1305             # skip closing quote and space
1306             rhs_index = close_quote_index + 1 + 1
1307         else:
1308             space_index = view_line.find(" ")
1309             if space_index <= 0:
1310                 die("No word-splitting space found: %s" % view_line)
1311             depot_side = view_line[0:space_index]
1312             rhs_index = space_index + 1
1313
1314         if view_line[rhs_index] == '"':
1315             # Second word is double quoted.  Make sure there is a
1316             # double quote at the end too.
1317             if not view_line.endswith('"'):
1318                 die("View line with rhs quote should end with one: %s" %
1319                     view_line)
1320             # skip the quotes
1321             client_side = view_line[rhs_index+1:-1]
1322         else:
1323             client_side = view_line[rhs_index:]
1324
1325         # prefix + means overlay on previous mapping
1326         overlay = False
1327         if depot_side.startswith("+"):
1328             overlay = True
1329             depot_side = depot_side[1:]
1330
1331         # prefix - means exclude this path
1332         exclude = False
1333         if depot_side.startswith("-"):
1334             exclude = True
1335             depot_side = depot_side[1:]
1336
1337         m = View.Mapping(depot_side, client_side, overlay, exclude)
1338         self.mappings.append(m)
1339
1340     def map_in_client(self, depot_path):
1341         """Return the relative location in the client where this
1342            depot file should live.  Returns "" if the file should
1343            not be mapped in the client."""
1344
1345         paths_filled = []
1346         client_path = ""
1347
1348         # look at later entries first
1349         for m in self.mappings[::-1]:
1350
1351             # see where will this path end up in the client
1352             p = m.map_depot_to_client(depot_path)
1353
1354             if p == "":
1355                 # Depot path does not belong in client.  Must remember
1356                 # this, as previous items should not cause files to
1357                 # exist in this path either.  Remember that the list is
1358                 # being walked from the end, which has higher precedence.
1359                 # Overlap mappings do not exclude previous mappings.
1360                 if not m.overlay:
1361                     paths_filled.append(m.client_side)
1362
1363             else:
1364                 # This mapping matched; no need to search any further.
1365                 # But, the mapping could be rejected if the client path
1366                 # has already been claimed by an earlier mapping.
1367                 already_mapped_in_client = False
1368                 for f in paths_filled:
1369                     # this is View.Path.match
1370                     if f.match(p):
1371                         already_mapped_in_client = True
1372                         break
1373                 if not already_mapped_in_client:
1374                     # Include this file, unless it is from a line that
1375                     # explicitly said to exclude it.
1376                     if not m.exclude:
1377                         client_path = p
1378
1379                 # a match, even if rejected, always stops the search
1380                 break
1381
1382         return client_path
1383
1384 class P4Sync(Command, P4UserMap):
1385     delete_actions = ( "delete", "move/delete", "purge" )
1386
1387     def __init__(self):
1388         Command.__init__(self)
1389         P4UserMap.__init__(self)
1390         self.options = [
1391                 optparse.make_option("--branch", dest="branch"),
1392                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
1393                 optparse.make_option("--changesfile", dest="changesFile"),
1394                 optparse.make_option("--silent", dest="silent", action="store_true"),
1395                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
1396                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
1397                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
1398                                      help="Import into refs/heads/ , not refs/remotes"),
1399                 optparse.make_option("--max-changes", dest="maxChanges"),
1400                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
1401                                      help="Keep entire BRANCH/DIR/SUBDIR prefix during import"),
1402                 optparse.make_option("--use-client-spec", dest="useClientSpec", action='store_true',
1403                                      help="Only sync files that are included in the Perforce Client Spec")
1404         ]
1405         self.description = """Imports from Perforce into a git repository.\n
1406     example:
1407     //depot/my/project/ -- to import the current head
1408     //depot/my/project/@all -- to import everything
1409     //depot/my/project/@1,6 -- to import only from revision 1 to 6
1410
1411     (a ... is not needed in the path p4 specification, it's added implicitly)"""
1412
1413         self.usage += " //depot/path[@revRange]"
1414         self.silent = False
1415         self.createdBranches = set()
1416         self.committedChanges = set()
1417         self.branch = ""
1418         self.detectBranches = False
1419         self.detectLabels = False
1420         self.changesFile = ""
1421         self.syncWithOrigin = True
1422         self.verbose = False
1423         self.importIntoRemotes = True
1424         self.maxChanges = ""
1425         self.isWindows = (platform.system() == "Windows")
1426         self.keepRepoPath = False
1427         self.depotPaths = None
1428         self.p4BranchesInGit = []
1429         self.cloneExclude = []
1430         self.useClientSpec = False
1431         self.clientSpecDirs = None
1432
1433         if gitConfig("git-p4.syncFromOrigin") == "false":
1434             self.syncWithOrigin = False
1435
1436     #
1437     # P4 wildcards are not allowed in filenames.  P4 complains
1438     # if you simply add them, but you can force it with "-f", in
1439     # which case it translates them into %xx encoding internally.
1440     # Search for and fix just these four characters.  Do % last so
1441     # that fixing it does not inadvertently create new %-escapes.
1442     #
1443     def wildcard_decode(self, path):
1444         # Cannot have * in a filename in windows; untested as to
1445         # what p4 would do in such a case.
1446         if not self.isWindows:
1447             path = path.replace("%2A", "*")
1448         path = path.replace("%23", "#") \
1449                    .replace("%40", "@") \
1450                    .replace("%25", "%")
1451         return path
1452
1453     def extractFilesFromCommit(self, commit):
1454         self.cloneExclude = [re.sub(r"\.\.\.$", "", path)
1455                              for path in self.cloneExclude]
1456         files = []
1457         fnum = 0
1458         while commit.has_key("depotFile%s" % fnum):
1459             path =  commit["depotFile%s" % fnum]
1460
1461             if [p for p in self.cloneExclude
1462                 if p4PathStartsWith(path, p)]:
1463                 found = False
1464             else:
1465                 found = [p for p in self.depotPaths
1466                          if p4PathStartsWith(path, p)]
1467             if not found:
1468                 fnum = fnum + 1
1469                 continue
1470
1471             file = {}
1472             file["path"] = path
1473             file["rev"] = commit["rev%s" % fnum]
1474             file["action"] = commit["action%s" % fnum]
1475             file["type"] = commit["type%s" % fnum]
1476             files.append(file)
1477             fnum = fnum + 1
1478         return files
1479
1480     def stripRepoPath(self, path, prefixes):
1481         if self.useClientSpec:
1482             return self.clientSpecDirs.map_in_client(path)
1483
1484         if self.keepRepoPath:
1485             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
1486
1487         for p in prefixes:
1488             if p4PathStartsWith(path, p):
1489                 path = path[len(p):]
1490
1491         return path
1492
1493     def splitFilesIntoBranches(self, commit):
1494         branches = {}
1495         fnum = 0
1496         while commit.has_key("depotFile%s" % fnum):
1497             path =  commit["depotFile%s" % fnum]
1498             found = [p for p in self.depotPaths
1499                      if p4PathStartsWith(path, p)]
1500             if not found:
1501                 fnum = fnum + 1
1502                 continue
1503
1504             file = {}
1505             file["path"] = path
1506             file["rev"] = commit["rev%s" % fnum]
1507             file["action"] = commit["action%s" % fnum]
1508             file["type"] = commit["type%s" % fnum]
1509             fnum = fnum + 1
1510
1511             relPath = self.stripRepoPath(path, self.depotPaths)
1512
1513             for branch in self.knownBranches.keys():
1514
1515                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
1516                 if relPath.startswith(branch + "/"):
1517                     if branch not in branches:
1518                         branches[branch] = []
1519                     branches[branch].append(file)
1520                     break
1521
1522         return branches
1523
1524     # output one file from the P4 stream
1525     # - helper for streamP4Files
1526
1527     def streamOneP4File(self, file, contents):
1528         relPath = self.stripRepoPath(file['depotFile'], self.branchPrefixes)
1529         relPath = self.wildcard_decode(relPath)
1530         if verbose:
1531             sys.stderr.write("%s\n" % relPath)
1532
1533         (type_base, type_mods) = split_p4_type(file["type"])
1534
1535         git_mode = "100644"
1536         if "x" in type_mods:
1537             git_mode = "100755"
1538         if type_base == "symlink":
1539             git_mode = "120000"
1540             # p4 print on a symlink contains "target\n"; remove the newline
1541             data = ''.join(contents)
1542             contents = [data[:-1]]
1543
1544         if type_base == "utf16":
1545             # p4 delivers different text in the python output to -G
1546             # than it does when using "print -o", or normal p4 client
1547             # operations.  utf16 is converted to ascii or utf8, perhaps.
1548             # But ascii text saved as -t utf16 is completely mangled.
1549             # Invoke print -o to get the real contents.
1550             text = p4_read_pipe(['print', '-q', '-o', '-', file['depotFile']])
1551             contents = [ text ]
1552
1553         if type_base == "apple":
1554             # Apple filetype files will be streamed as a concatenation of
1555             # its appledouble header and the contents.  This is useless
1556             # on both macs and non-macs.  If using "print -q -o xx", it
1557             # will create "xx" with the data, and "%xx" with the header.
1558             # This is also not very useful.
1559             #
1560             # Ideally, someday, this script can learn how to generate
1561             # appledouble files directly and import those to git, but
1562             # non-mac machines can never find a use for apple filetype.
1563             print "\nIgnoring apple filetype file %s" % file['depotFile']
1564             return
1565
1566         # Perhaps windows wants unicode, utf16 newlines translated too;
1567         # but this is not doing it.
1568         if self.isWindows and type_base == "text":
1569             mangled = []
1570             for data in contents:
1571                 data = data.replace("\r\n", "\n")
1572                 mangled.append(data)
1573             contents = mangled
1574
1575         # Note that we do not try to de-mangle keywords on utf16 files,
1576         # even though in theory somebody may want that.
1577         if type_base in ("text", "unicode", "binary"):
1578             if "ko" in type_mods:
1579                 text = ''.join(contents)
1580                 text = re.sub(r'\$(Id|Header):[^$]*\$', r'$\1$', text)
1581                 contents = [ text ]
1582             elif "k" in type_mods:
1583                 text = ''.join(contents)
1584                 text = re.sub(r'\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$]*\$', r'$\1$', text)
1585                 contents = [ text ]
1586
1587         self.gitStream.write("M %s inline %s\n" % (git_mode, relPath))
1588
1589         # total length...
1590         length = 0
1591         for d in contents:
1592             length = length + len(d)
1593
1594         self.gitStream.write("data %d\n" % length)
1595         for d in contents:
1596             self.gitStream.write(d)
1597         self.gitStream.write("\n")
1598
1599     def streamOneP4Deletion(self, file):
1600         relPath = self.stripRepoPath(file['path'], self.branchPrefixes)
1601         if verbose:
1602             sys.stderr.write("delete %s\n" % relPath)
1603         self.gitStream.write("D %s\n" % relPath)
1604
1605     # handle another chunk of streaming data
1606     def streamP4FilesCb(self, marshalled):
1607
1608         if marshalled.has_key('depotFile') and self.stream_have_file_info:
1609             # start of a new file - output the old one first
1610             self.streamOneP4File(self.stream_file, self.stream_contents)
1611             self.stream_file = {}
1612             self.stream_contents = []
1613             self.stream_have_file_info = False
1614
1615         # pick up the new file information... for the
1616         # 'data' field we need to append to our array
1617         for k in marshalled.keys():
1618             if k == 'data':
1619                 self.stream_contents.append(marshalled['data'])
1620             else:
1621                 self.stream_file[k] = marshalled[k]
1622
1623         self.stream_have_file_info = True
1624
1625     # Stream directly from "p4 files" into "git fast-import"
1626     def streamP4Files(self, files):
1627         filesForCommit = []
1628         filesToRead = []
1629         filesToDelete = []
1630
1631         for f in files:
1632             # if using a client spec, only add the files that have
1633             # a path in the client
1634             if self.clientSpecDirs:
1635                 if self.clientSpecDirs.map_in_client(f['path']) == "":
1636                     continue
1637
1638             filesForCommit.append(f)
1639             if f['action'] in self.delete_actions:
1640                 filesToDelete.append(f)
1641             else:
1642                 filesToRead.append(f)
1643
1644         # deleted files...
1645         for f in filesToDelete:
1646             self.streamOneP4Deletion(f)
1647
1648         if len(filesToRead) > 0:
1649             self.stream_file = {}
1650             self.stream_contents = []
1651             self.stream_have_file_info = False
1652
1653             # curry self argument
1654             def streamP4FilesCbSelf(entry):
1655                 self.streamP4FilesCb(entry)
1656
1657             fileArgs = ['%s#%s' % (f['path'], f['rev']) for f in filesToRead]
1658
1659             p4CmdList(["-x", "-", "print"],
1660                       stdin=fileArgs,
1661                       cb=streamP4FilesCbSelf)
1662
1663             # do the last chunk
1664             if self.stream_file.has_key('depotFile'):
1665                 self.streamOneP4File(self.stream_file, self.stream_contents)
1666
1667     def commit(self, details, files, branch, branchPrefixes, parent = ""):
1668         epoch = details["time"]
1669         author = details["user"]
1670         self.branchPrefixes = branchPrefixes
1671
1672         if self.verbose:
1673             print "commit into %s" % branch
1674
1675         # start with reading files; if that fails, we should not
1676         # create a commit.
1677         new_files = []
1678         for f in files:
1679             if [p for p in branchPrefixes if p4PathStartsWith(f['path'], p)]:
1680                 new_files.append (f)
1681             else:
1682                 sys.stderr.write("Ignoring file outside of prefix: %s\n" % f['path'])
1683
1684         self.gitStream.write("commit %s\n" % branch)
1685 #        gitStream.write("mark :%s\n" % details["change"])
1686         self.committedChanges.add(int(details["change"]))
1687         committer = ""
1688         if author not in self.users:
1689             self.getUserMapFromPerforceServer()
1690         if author in self.users:
1691             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
1692         else:
1693             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
1694
1695         self.gitStream.write("committer %s\n" % committer)
1696
1697         self.gitStream.write("data <<EOT\n")
1698         self.gitStream.write(details["desc"])
1699         self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
1700                              % (','.join (branchPrefixes), details["change"]))
1701         if len(details['options']) > 0:
1702             self.gitStream.write(": options = %s" % details['options'])
1703         self.gitStream.write("]\nEOT\n\n")
1704
1705         if len(parent) > 0:
1706             if self.verbose:
1707                 print "parent %s" % parent
1708             self.gitStream.write("from %s\n" % parent)
1709
1710         self.streamP4Files(new_files)
1711         self.gitStream.write("\n")
1712
1713         change = int(details["change"])
1714
1715         if self.labels.has_key(change):
1716             label = self.labels[change]
1717             labelDetails = label[0]
1718             labelRevisions = label[1]
1719             if self.verbose:
1720                 print "Change %s is labelled %s" % (change, labelDetails)
1721
1722             files = p4CmdList(["files"] + ["%s...@%s" % (p, change)
1723                                                     for p in branchPrefixes])
1724
1725             if len(files) == len(labelRevisions):
1726
1727                 cleanedFiles = {}
1728                 for info in files:
1729                     if info["action"] in self.delete_actions:
1730                         continue
1731                     cleanedFiles[info["depotFile"]] = info["rev"]
1732
1733                 if cleanedFiles == labelRevisions:
1734                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
1735                     self.gitStream.write("from %s\n" % branch)
1736
1737                     owner = labelDetails["Owner"]
1738                     tagger = ""
1739                     if author in self.users:
1740                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
1741                     else:
1742                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
1743                     self.gitStream.write("tagger %s\n" % tagger)
1744                     self.gitStream.write("data <<EOT\n")
1745                     self.gitStream.write(labelDetails["Description"])
1746                     self.gitStream.write("EOT\n\n")
1747
1748                 else:
1749                     if not self.silent:
1750                         print ("Tag %s does not match with change %s: files do not match."
1751                                % (labelDetails["label"], change))
1752
1753             else:
1754                 if not self.silent:
1755                     print ("Tag %s does not match with change %s: file count is different."
1756                            % (labelDetails["label"], change))
1757
1758     def getLabels(self):
1759         self.labels = {}
1760
1761         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
1762         if len(l) > 0 and not self.silent:
1763             print "Finding files belonging to labels in %s" % `self.depotPaths`
1764
1765         for output in l:
1766             label = output["label"]
1767             revisions = {}
1768             newestChange = 0
1769             if self.verbose:
1770                 print "Querying files for label %s" % label
1771             for file in p4CmdList(["files"] +
1772                                       ["%s...@%s" % (p, label)
1773                                           for p in self.depotPaths]):
1774                 revisions[file["depotFile"]] = file["rev"]
1775                 change = int(file["change"])
1776                 if change > newestChange:
1777                     newestChange = change
1778
1779             self.labels[newestChange] = [output, revisions]
1780
1781         if self.verbose:
1782             print "Label changes: %s" % self.labels.keys()
1783
1784     def guessProjectName(self):
1785         for p in self.depotPaths:
1786             if p.endswith("/"):
1787                 p = p[:-1]
1788             p = p[p.strip().rfind("/") + 1:]
1789             if not p.endswith("/"):
1790                p += "/"
1791             return p
1792
1793     def getBranchMapping(self):
1794         lostAndFoundBranches = set()
1795
1796         user = gitConfig("git-p4.branchUser")
1797         if len(user) > 0:
1798             command = "branches -u %s" % user
1799         else:
1800             command = "branches"
1801
1802         for info in p4CmdList(command):
1803             details = p4Cmd("branch -o %s" % info["branch"])
1804             viewIdx = 0
1805             while details.has_key("View%s" % viewIdx):
1806                 paths = details["View%s" % viewIdx].split(" ")
1807                 viewIdx = viewIdx + 1
1808                 # require standard //depot/foo/... //depot/bar/... mapping
1809                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
1810                     continue
1811                 source = paths[0]
1812                 destination = paths[1]
1813                 ## HACK
1814                 if p4PathStartsWith(source, self.depotPaths[0]) and p4PathStartsWith(destination, self.depotPaths[0]):
1815                     source = source[len(self.depotPaths[0]):-4]
1816                     destination = destination[len(self.depotPaths[0]):-4]
1817
1818                     if destination in self.knownBranches:
1819                         if not self.silent:
1820                             print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
1821                             print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
1822                         continue
1823
1824                     self.knownBranches[destination] = source
1825
1826                     lostAndFoundBranches.discard(destination)
1827
1828                     if source not in self.knownBranches:
1829                         lostAndFoundBranches.add(source)
1830
1831         # Perforce does not strictly require branches to be defined, so we also
1832         # check git config for a branch list.
1833         #
1834         # Example of branch definition in git config file:
1835         # [git-p4]
1836         #   branchList=main:branchA
1837         #   branchList=main:branchB
1838         #   branchList=branchA:branchC
1839         configBranches = gitConfigList("git-p4.branchList")
1840         for branch in configBranches:
1841             if branch:
1842                 (source, destination) = branch.split(":")
1843                 self.knownBranches[destination] = source
1844
1845                 lostAndFoundBranches.discard(destination)
1846
1847                 if source not in self.knownBranches:
1848                     lostAndFoundBranches.add(source)
1849
1850
1851         for branch in lostAndFoundBranches:
1852             self.knownBranches[branch] = branch
1853
1854     def getBranchMappingFromGitBranches(self):
1855         branches = p4BranchesInGit(self.importIntoRemotes)
1856         for branch in branches.keys():
1857             if branch == "master":
1858                 branch = "main"
1859             else:
1860                 branch = branch[len(self.projectName):]
1861             self.knownBranches[branch] = branch
1862
1863     def listExistingP4GitBranches(self):
1864         # branches holds mapping from name to commit
1865         branches = p4BranchesInGit(self.importIntoRemotes)
1866         self.p4BranchesInGit = branches.keys()
1867         for branch in branches.keys():
1868             self.initialParents[self.refPrefix + branch] = branches[branch]
1869
1870     def updateOptionDict(self, d):
1871         option_keys = {}
1872         if self.keepRepoPath:
1873             option_keys['keepRepoPath'] = 1
1874
1875         d["options"] = ' '.join(sorted(option_keys.keys()))
1876
1877     def readOptions(self, d):
1878         self.keepRepoPath = (d.has_key('options')
1879                              and ('keepRepoPath' in d['options']))
1880
1881     def gitRefForBranch(self, branch):
1882         if branch == "main":
1883             return self.refPrefix + "master"
1884
1885         if len(branch) <= 0:
1886             return branch
1887
1888         return self.refPrefix + self.projectName + branch
1889
1890     def gitCommitByP4Change(self, ref, change):
1891         if self.verbose:
1892             print "looking in ref " + ref + " for change %s using bisect..." % change
1893
1894         earliestCommit = ""
1895         latestCommit = parseRevision(ref)
1896
1897         while True:
1898             if self.verbose:
1899                 print "trying: earliest %s latest %s" % (earliestCommit, latestCommit)
1900             next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip()
1901             if len(next) == 0:
1902                 if self.verbose:
1903                     print "argh"
1904                 return ""
1905             log = extractLogMessageFromGitCommit(next)
1906             settings = extractSettingsGitLog(log)
1907             currentChange = int(settings['change'])
1908             if self.verbose:
1909                 print "current change %s" % currentChange
1910
1911             if currentChange == change:
1912                 if self.verbose:
1913                     print "found %s" % next
1914                 return next
1915
1916             if currentChange < change:
1917                 earliestCommit = "^%s" % next
1918             else:
1919                 latestCommit = "%s" % next
1920
1921         return ""
1922
1923     def importNewBranch(self, branch, maxChange):
1924         # make fast-import flush all changes to disk and update the refs using the checkpoint
1925         # command so that we can try to find the branch parent in the git history
1926         self.gitStream.write("checkpoint\n\n");
1927         self.gitStream.flush();
1928         branchPrefix = self.depotPaths[0] + branch + "/"
1929         range = "@1,%s" % maxChange
1930         #print "prefix" + branchPrefix
1931         changes = p4ChangesForPaths([branchPrefix], range)
1932         if len(changes) <= 0:
1933             return False
1934         firstChange = changes[0]
1935         #print "first change in branch: %s" % firstChange
1936         sourceBranch = self.knownBranches[branch]
1937         sourceDepotPath = self.depotPaths[0] + sourceBranch
1938         sourceRef = self.gitRefForBranch(sourceBranch)
1939         #print "source " + sourceBranch
1940
1941         branchParentChange = int(p4Cmd("changes -m 1 %s...@1,%s" % (sourceDepotPath, firstChange))["change"])
1942         #print "branch parent: %s" % branchParentChange
1943         gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange)
1944         if len(gitParent) > 0:
1945             self.initialParents[self.gitRefForBranch(branch)] = gitParent
1946             #print "parent git commit: %s" % gitParent
1947
1948         self.importChanges(changes)
1949         return True
1950
1951     def importChanges(self, changes):
1952         cnt = 1
1953         for change in changes:
1954             description = p4Cmd("describe %s" % change)
1955             self.updateOptionDict(description)
1956
1957             if not self.silent:
1958                 sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1959                 sys.stdout.flush()
1960             cnt = cnt + 1
1961
1962             try:
1963                 if self.detectBranches:
1964                     branches = self.splitFilesIntoBranches(description)
1965                     for branch in branches.keys():
1966                         ## HACK  --hwn
1967                         branchPrefix = self.depotPaths[0] + branch + "/"
1968
1969                         parent = ""
1970
1971                         filesForCommit = branches[branch]
1972
1973                         if self.verbose:
1974                             print "branch is %s" % branch
1975
1976                         self.updatedBranches.add(branch)
1977
1978                         if branch not in self.createdBranches:
1979                             self.createdBranches.add(branch)
1980                             parent = self.knownBranches[branch]
1981                             if parent == branch:
1982                                 parent = ""
1983                             else:
1984                                 fullBranch = self.projectName + branch
1985                                 if fullBranch not in self.p4BranchesInGit:
1986                                     if not self.silent:
1987                                         print("\n    Importing new branch %s" % fullBranch);
1988                                     if self.importNewBranch(branch, change - 1):
1989                                         parent = ""
1990                                         self.p4BranchesInGit.append(fullBranch)
1991                                     if not self.silent:
1992                                         print("\n    Resuming with change %s" % change);
1993
1994                                 if self.verbose:
1995                                     print "parent determined through known branches: %s" % parent
1996
1997                         branch = self.gitRefForBranch(branch)
1998                         parent = self.gitRefForBranch(parent)
1999
2000                         if self.verbose:
2001                             print "looking for initial parent for %s; current parent is %s" % (branch, parent)
2002
2003                         if len(parent) == 0 and branch in self.initialParents:
2004                             parent = self.initialParents[branch]
2005                             del self.initialParents[branch]
2006
2007                         self.commit(description, filesForCommit, branch, [branchPrefix], parent)
2008                 else:
2009                     files = self.extractFilesFromCommit(description)
2010                     self.commit(description, files, self.branch, self.depotPaths,
2011                                 self.initialParent)
2012                     self.initialParent = ""
2013             except IOError:
2014                 print self.gitError.read()
2015                 sys.exit(1)
2016
2017     def importHeadRevision(self, revision):
2018         print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
2019
2020         details = {}
2021         details["user"] = "git perforce import user"
2022         details["desc"] = ("Initial import of %s from the state at revision %s\n"
2023                            % (' '.join(self.depotPaths), revision))
2024         details["change"] = revision
2025         newestRevision = 0
2026
2027         fileCnt = 0
2028         fileArgs = ["%s...%s" % (p,revision) for p in self.depotPaths]
2029
2030         for info in p4CmdList(["files"] + fileArgs):
2031
2032             if 'code' in info and info['code'] == 'error':
2033                 sys.stderr.write("p4 returned an error: %s\n"
2034                                  % info['data'])
2035                 if info['data'].find("must refer to client") >= 0:
2036                     sys.stderr.write("This particular p4 error is misleading.\n")
2037                     sys.stderr.write("Perhaps the depot path was misspelled.\n");
2038                     sys.stderr.write("Depot path:  %s\n" % " ".join(self.depotPaths))
2039                 sys.exit(1)
2040             if 'p4ExitCode' in info:
2041                 sys.stderr.write("p4 exitcode: %s\n" % info['p4ExitCode'])
2042                 sys.exit(1)
2043
2044
2045             change = int(info["change"])
2046             if change > newestRevision:
2047                 newestRevision = change
2048
2049             if info["action"] in self.delete_actions:
2050                 # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
2051                 #fileCnt = fileCnt + 1
2052                 continue
2053
2054             for prop in ["depotFile", "rev", "action", "type" ]:
2055                 details["%s%s" % (prop, fileCnt)] = info[prop]
2056
2057             fileCnt = fileCnt + 1
2058
2059         details["change"] = newestRevision
2060
2061         # Use time from top-most change so that all git-p4 clones of
2062         # the same p4 repo have the same commit SHA1s.
2063         res = p4CmdList("describe -s %d" % newestRevision)
2064         newestTime = None
2065         for r in res:
2066             if r.has_key('time'):
2067                 newestTime = int(r['time'])
2068         if newestTime is None:
2069             die("\"describe -s\" on newest change %d did not give a time")
2070         details["time"] = newestTime
2071
2072         self.updateOptionDict(details)
2073         try:
2074             self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
2075         except IOError:
2076             print "IO error with git fast-import. Is your git version recent enough?"
2077             print self.gitError.read()
2078
2079
2080     def getClientSpec(self):
2081         specList = p4CmdList("client -o")
2082         if len(specList) != 1:
2083             die('Output from "client -o" is %d lines, expecting 1' %
2084                 len(specList))
2085
2086         # dictionary of all client parameters
2087         entry = specList[0]
2088
2089         # just the keys that start with "View"
2090         view_keys = [ k for k in entry.keys() if k.startswith("View") ]
2091
2092         # hold this new View
2093         view = View()
2094
2095         # append the lines, in order, to the view
2096         for view_num in range(len(view_keys)):
2097             k = "View%d" % view_num
2098             if k not in view_keys:
2099                 die("Expected view key %s missing" % k)
2100             view.append(entry[k])
2101
2102         self.clientSpecDirs = view
2103         if self.verbose:
2104             for i, m in enumerate(self.clientSpecDirs.mappings):
2105                     print "clientSpecDirs %d: %s" % (i, str(m))
2106
2107     def run(self, args):
2108         self.depotPaths = []
2109         self.changeRange = ""
2110         self.initialParent = ""
2111         self.previousDepotPaths = []
2112
2113         # map from branch depot path to parent branch
2114         self.knownBranches = {}
2115         self.initialParents = {}
2116         self.hasOrigin = originP4BranchesExist()
2117         if not self.syncWithOrigin:
2118             self.hasOrigin = False
2119
2120         if self.importIntoRemotes:
2121             self.refPrefix = "refs/remotes/p4/"
2122         else:
2123             self.refPrefix = "refs/heads/p4/"
2124
2125         if self.syncWithOrigin and self.hasOrigin:
2126             if not self.silent:
2127                 print "Syncing with origin first by calling git fetch origin"
2128             system("git fetch origin")
2129
2130         if len(self.branch) == 0:
2131             self.branch = self.refPrefix + "master"
2132             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
2133                 system("git update-ref %s refs/heads/p4" % self.branch)
2134                 system("git branch -D p4");
2135             # create it /after/ importing, when master exists
2136             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
2137                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
2138
2139         if not self.useClientSpec:
2140             if gitConfig("git-p4.useclientspec", "--bool") == "true":
2141                 self.useClientSpec = True
2142         if self.useClientSpec:
2143             self.getClientSpec()
2144
2145         # TODO: should always look at previous commits,
2146         # merge with previous imports, if possible.
2147         if args == []:
2148             if self.hasOrigin:
2149                 createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
2150             self.listExistingP4GitBranches()
2151
2152             if len(self.p4BranchesInGit) > 1:
2153                 if not self.silent:
2154                     print "Importing from/into multiple branches"
2155                 self.detectBranches = True
2156
2157             if self.verbose:
2158                 print "branches: %s" % self.p4BranchesInGit
2159
2160             p4Change = 0
2161             for branch in self.p4BranchesInGit:
2162                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
2163
2164                 settings = extractSettingsGitLog(logMsg)
2165
2166                 self.readOptions(settings)
2167                 if (settings.has_key('depot-paths')
2168                     and settings.has_key ('change')):
2169                     change = int(settings['change']) + 1
2170                     p4Change = max(p4Change, change)
2171
2172                     depotPaths = sorted(settings['depot-paths'])
2173                     if self.previousDepotPaths == []:
2174                         self.previousDepotPaths = depotPaths
2175                     else:
2176                         paths = []
2177                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
2178                             prev_list = prev.split("/")
2179                             cur_list = cur.split("/")
2180                             for i in range(0, min(len(cur_list), len(prev_list))):
2181                                 if cur_list[i] <> prev_list[i]:
2182                                     i = i - 1
2183                                     break
2184
2185                             paths.append ("/".join(cur_list[:i + 1]))
2186
2187                         self.previousDepotPaths = paths
2188
2189             if p4Change > 0:
2190                 self.depotPaths = sorted(self.previousDepotPaths)
2191                 self.changeRange = "@%s,#head" % p4Change
2192                 if not self.detectBranches:
2193                     self.initialParent = parseRevision(self.branch)
2194                 if not self.silent and not self.detectBranches:
2195                     print "Performing incremental import into %s git branch" % self.branch
2196
2197         if not self.branch.startswith("refs/"):
2198             self.branch = "refs/heads/" + self.branch
2199
2200         if len(args) == 0 and self.depotPaths:
2201             if not self.silent:
2202                 print "Depot paths: %s" % ' '.join(self.depotPaths)
2203         else:
2204             if self.depotPaths and self.depotPaths != args:
2205                 print ("previous import used depot path %s and now %s was specified. "
2206                        "This doesn't work!" % (' '.join (self.depotPaths),
2207                                                ' '.join (args)))
2208                 sys.exit(1)
2209
2210             self.depotPaths = sorted(args)
2211
2212         revision = ""
2213         self.users = {}
2214
2215         # Make sure no revision specifiers are used when --changesfile
2216         # is specified.
2217         bad_changesfile = False
2218         if len(self.changesFile) > 0:
2219             for p in self.depotPaths:
2220                 if p.find("@") >= 0 or p.find("#") >= 0:
2221                     bad_changesfile = True
2222                     break
2223         if bad_changesfile:
2224             die("Option --changesfile is incompatible with revision specifiers")
2225
2226         newPaths = []
2227         for p in self.depotPaths:
2228             if p.find("@") != -1:
2229                 atIdx = p.index("@")
2230                 self.changeRange = p[atIdx:]
2231                 if self.changeRange == "@all":
2232                     self.changeRange = ""
2233                 elif ',' not in self.changeRange:
2234                     revision = self.changeRange
2235                     self.changeRange = ""
2236                 p = p[:atIdx]
2237             elif p.find("#") != -1:
2238                 hashIdx = p.index("#")
2239                 revision = p[hashIdx:]
2240                 p = p[:hashIdx]
2241             elif self.previousDepotPaths == []:
2242                 # pay attention to changesfile, if given, else import
2243                 # the entire p4 tree at the head revision
2244                 if len(self.changesFile) == 0:
2245                     revision = "#head"
2246
2247             p = re.sub ("\.\.\.$", "", p)
2248             if not p.endswith("/"):
2249                 p += "/"
2250
2251             newPaths.append(p)
2252
2253         self.depotPaths = newPaths
2254
2255
2256         self.loadUserMapFromCache()
2257         self.labels = {}
2258         if self.detectLabels:
2259             self.getLabels();
2260
2261         if self.detectBranches:
2262             ## FIXME - what's a P4 projectName ?
2263             self.projectName = self.guessProjectName()
2264
2265             if self.hasOrigin:
2266                 self.getBranchMappingFromGitBranches()
2267             else:
2268                 self.getBranchMapping()
2269             if self.verbose:
2270                 print "p4-git branches: %s" % self.p4BranchesInGit
2271                 print "initial parents: %s" % self.initialParents
2272             for b in self.p4BranchesInGit:
2273                 if b != "master":
2274
2275                     ## FIXME
2276                     b = b[len(self.projectName):]
2277                 self.createdBranches.add(b)
2278
2279         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
2280
2281         importProcess = subprocess.Popen(["git", "fast-import"],
2282                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
2283                                          stderr=subprocess.PIPE);
2284         self.gitOutput = importProcess.stdout
2285         self.gitStream = importProcess.stdin
2286         self.gitError = importProcess.stderr
2287
2288         if revision:
2289             self.importHeadRevision(revision)
2290         else:
2291             changes = []
2292
2293             if len(self.changesFile) > 0:
2294                 output = open(self.changesFile).readlines()
2295                 changeSet = set()
2296                 for line in output:
2297                     changeSet.add(int(line))
2298
2299                 for change in changeSet:
2300                     changes.append(change)
2301
2302                 changes.sort()
2303             else:
2304                 # catch "git-p4 sync" with no new branches, in a repo that
2305                 # does not have any existing git-p4 branches
2306                 if len(args) == 0 and not self.p4BranchesInGit:
2307                     die("No remote p4 branches.  Perhaps you never did \"git p4 clone\" in here.");
2308                 if self.verbose:
2309                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
2310                                                               self.changeRange)
2311                 changes = p4ChangesForPaths(self.depotPaths, self.changeRange)
2312
2313                 if len(self.maxChanges) > 0:
2314                     changes = changes[:min(int(self.maxChanges), len(changes))]
2315
2316             if len(changes) == 0:
2317                 if not self.silent:
2318                     print "No changes to import!"
2319                 return True
2320
2321             if not self.silent and not self.detectBranches:
2322                 print "Import destination: %s" % self.branch
2323
2324             self.updatedBranches = set()
2325
2326             self.importChanges(changes)
2327
2328             if not self.silent:
2329                 print ""
2330                 if len(self.updatedBranches) > 0:
2331                     sys.stdout.write("Updated branches: ")
2332                     for b in self.updatedBranches:
2333                         sys.stdout.write("%s " % b)
2334                     sys.stdout.write("\n")
2335
2336         self.gitStream.close()
2337         if importProcess.wait() != 0:
2338             die("fast-import failed: %s" % self.gitError.read())
2339         self.gitOutput.close()
2340         self.gitError.close()
2341
2342         return True
2343
2344 class P4Rebase(Command):
2345     def __init__(self):
2346         Command.__init__(self)
2347         self.options = [ ]
2348         self.description = ("Fetches the latest revision from perforce and "
2349                             + "rebases the current work (branch) against it")
2350         self.verbose = False
2351
2352     def run(self, args):
2353         sync = P4Sync()
2354         sync.run([])
2355
2356         return self.rebase()
2357
2358     def rebase(self):
2359         if os.system("git update-index --refresh") != 0:
2360             die("Some files in your working directory are modified and different than what is in your index. You can use git update-index <filename> to bring the index up-to-date or stash away all your changes with git stash.");
2361         if len(read_pipe("git diff-index HEAD --")) > 0:
2362             die("You have uncommited changes. Please commit them before rebasing or stash them away with git stash.");
2363
2364         [upstream, settings] = findUpstreamBranchPoint()
2365         if len(upstream) == 0:
2366             die("Cannot find upstream branchpoint for rebase")
2367
2368         # the branchpoint may be p4/foo~3, so strip off the parent
2369         upstream = re.sub("~[0-9]+$", "", upstream)
2370
2371         print "Rebasing the current branch onto %s" % upstream
2372         oldHead = read_pipe("git rev-parse HEAD").strip()
2373         system("git rebase %s" % upstream)
2374         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
2375         return True
2376
2377 class P4Clone(P4Sync):
2378     def __init__(self):
2379         P4Sync.__init__(self)
2380         self.description = "Creates a new git repository and imports from Perforce into it"
2381         self.usage = "usage: %prog [options] //depot/path[@revRange]"
2382         self.options += [
2383             optparse.make_option("--destination", dest="cloneDestination",
2384                                  action='store', default=None,
2385                                  help="where to leave result of the clone"),
2386             optparse.make_option("-/", dest="cloneExclude",
2387                                  action="append", type="string",
2388                                  help="exclude depot path"),
2389             optparse.make_option("--bare", dest="cloneBare",
2390                                  action="store_true", default=False),
2391         ]
2392         self.cloneDestination = None
2393         self.needsGit = False
2394         self.cloneBare = False
2395
2396     # This is required for the "append" cloneExclude action
2397     def ensure_value(self, attr, value):
2398         if not hasattr(self, attr) or getattr(self, attr) is None:
2399             setattr(self, attr, value)
2400         return getattr(self, attr)
2401
2402     def defaultDestination(self, args):
2403         ## TODO: use common prefix of args?
2404         depotPath = args[0]
2405         depotDir = re.sub("(@[^@]*)$", "", depotPath)
2406         depotDir = re.sub("(#[^#]*)$", "", depotDir)
2407         depotDir = re.sub(r"\.\.\.$", "", depotDir)
2408         depotDir = re.sub(r"/$", "", depotDir)
2409         return os.path.split(depotDir)[1]
2410
2411     def run(self, args):
2412         if len(args) < 1:
2413             return False
2414
2415         if self.keepRepoPath and not self.cloneDestination:
2416             sys.stderr.write("Must specify destination for --keep-path\n")
2417             sys.exit(1)
2418
2419         depotPaths = args
2420
2421         if not self.cloneDestination and len(depotPaths) > 1:
2422             self.cloneDestination = depotPaths[-1]
2423             depotPaths = depotPaths[:-1]
2424
2425         self.cloneExclude = ["/"+p for p in self.cloneExclude]
2426         for p in depotPaths:
2427             if not p.startswith("//"):
2428                 return False
2429
2430         if not self.cloneDestination:
2431             self.cloneDestination = self.defaultDestination(args)
2432
2433         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
2434
2435         if not os.path.exists(self.cloneDestination):
2436             os.makedirs(self.cloneDestination)
2437         chdir(self.cloneDestination)
2438
2439         init_cmd = [ "git", "init" ]
2440         if self.cloneBare:
2441             init_cmd.append("--bare")
2442         subprocess.check_call(init_cmd)
2443
2444         if not P4Sync.run(self, depotPaths):
2445             return False
2446         if self.branch != "master":
2447             if self.importIntoRemotes:
2448                 masterbranch = "refs/remotes/p4/master"
2449             else:
2450                 masterbranch = "refs/heads/p4/master"
2451             if gitBranchExists(masterbranch):
2452                 system("git branch master %s" % masterbranch)
2453                 if not self.cloneBare:
2454                     system("git checkout -f")
2455             else:
2456                 print "Could not detect main branch. No checkout/master branch created."
2457
2458         return True
2459
2460 class P4Branches(Command):
2461     def __init__(self):
2462         Command.__init__(self)
2463         self.options = [ ]
2464         self.description = ("Shows the git branches that hold imports and their "
2465                             + "corresponding perforce depot paths")
2466         self.verbose = False
2467
2468     def run(self, args):
2469         if originP4BranchesExist():
2470             createOrUpdateBranchesFromOrigin()
2471
2472         cmdline = "git rev-parse --symbolic "
2473         cmdline += " --remotes"
2474
2475         for line in read_pipe_lines(cmdline):
2476             line = line.strip()
2477
2478             if not line.startswith('p4/') or line == "p4/HEAD":
2479                 continue
2480             branch = line
2481
2482             log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
2483             settings = extractSettingsGitLog(log)
2484
2485             print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
2486         return True
2487
2488 class HelpFormatter(optparse.IndentedHelpFormatter):
2489     def __init__(self):
2490         optparse.IndentedHelpFormatter.__init__(self)
2491
2492     def format_description(self, description):
2493         if description:
2494             return description + "\n"
2495         else:
2496             return ""
2497
2498 def printUsage(commands):
2499     print "usage: %s <command> [options]" % sys.argv[0]
2500     print ""
2501     print "valid commands: %s" % ", ".join(commands)
2502     print ""
2503     print "Try %s <command> --help for command specific help." % sys.argv[0]
2504     print ""
2505
2506 commands = {
2507     "debug" : P4Debug,
2508     "submit" : P4Submit,
2509     "commit" : P4Submit,
2510     "sync" : P4Sync,
2511     "rebase" : P4Rebase,
2512     "clone" : P4Clone,
2513     "rollback" : P4RollBack,
2514     "branches" : P4Branches
2515 }
2516
2517
2518 def main():
2519     if len(sys.argv[1:]) == 0:
2520         printUsage(commands.keys())
2521         sys.exit(2)
2522
2523     cmd = ""
2524     cmdName = sys.argv[1]
2525     try:
2526         klass = commands[cmdName]
2527         cmd = klass()
2528     except KeyError:
2529         print "unknown command %s" % cmdName
2530         print ""
2531         printUsage(commands.keys())
2532         sys.exit(2)
2533
2534     options = cmd.options
2535     cmd.gitdir = os.environ.get("GIT_DIR", None)
2536
2537     args = sys.argv[2:]
2538
2539     if len(options) > 0:
2540         if cmd.needsGit:
2541             options.append(optparse.make_option("--git-dir", dest="gitdir"))
2542
2543         parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
2544                                        options,
2545                                        description = cmd.description,
2546                                        formatter = HelpFormatter())
2547
2548         (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
2549     global verbose
2550     verbose = cmd.verbose
2551     if cmd.needsGit:
2552         if cmd.gitdir == None:
2553             cmd.gitdir = os.path.abspath(".git")
2554             if not isValidGitDir(cmd.gitdir):
2555                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
2556                 if os.path.exists(cmd.gitdir):
2557                     cdup = read_pipe("git rev-parse --show-cdup").strip()
2558                     if len(cdup) > 0:
2559                         chdir(cdup);
2560
2561         if not isValidGitDir(cmd.gitdir):
2562             if isValidGitDir(cmd.gitdir + "/.git"):
2563                 cmd.gitdir += "/.git"
2564             else:
2565                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
2566
2567         os.environ["GIT_DIR"] = cmd.gitdir
2568
2569     if not cmd.run(args):
2570         parser.print_help()
2571         sys.exit(2)
2572
2573
2574 if __name__ == '__main__':
2575     main()