git-p4: move to toplevel

Move git-p4 out of contrib/fast-import into the main code base,
aside other foreign SCM tools.

Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

3 files changed, 12 insertions, 2759 deletions

diff --git a/contrib/fast-import/git-p4 b/contrib/fast-import/git-p4
deleted file mode 100755
index c5362c4c11..0000000000
--- a/contrib/fast-import/git-p4
+++ /dev/null
@@ -1,2758 +0,0 @@
-#!/usr/bin/env python
-#
-# git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
-#
-# Author: Simon Hausmann <simon@lst.de>
-# Copyright: 2007 Simon Hausmann <simon@lst.de>
-#            2007 Trolltech ASA
-# License: MIT <http://www.opensource.org/licenses/mit-license.php>
-#
-
-import optparse, sys, os, marshal, subprocess, shelve
-import tempfile, getopt, os.path, time, platform
-import re, shutil
-
-verbose = False
-
-
-def p4_build_cmd(cmd):
-    """Build a suitable p4 command line.
-
-    This consolidates building and returning a p4 command line into one
-    location. It means that hooking into the environment, or other configuration
-    can be done more easily.
-    """
-    real_cmd = ["p4"]
-
-    user = gitConfig("git-p4.user")
-    if len(user) > 0:
-        real_cmd += ["-u",user]
-
-    password = gitConfig("git-p4.password")
-    if len(password) > 0:
-        real_cmd += ["-P", password]
-
-    port = gitConfig("git-p4.port")
-    if len(port) > 0:
-        real_cmd += ["-p", port]
-
-    host = gitConfig("git-p4.host")
-    if len(host) > 0:
-        real_cmd += ["-H", host]
-
-    client = gitConfig("git-p4.client")
-    if len(client) > 0:
-        real_cmd += ["-c", client]
-
-
-    if isinstance(cmd,basestring):
-        real_cmd = ' '.join(real_cmd) + ' ' + cmd
-    else:
-        real_cmd += cmd
-    return real_cmd
-
-def chdir(dir):
-    # P4 uses the PWD environment variable rather than getcwd(). Since we're
-    # not using the shell, we have to set it ourselves.  This path could
-    # be relative, so go there first, then figure out where we ended up.
-    os.chdir(dir)
-    os.environ['PWD'] = os.getcwd()
-
-def die(msg):
-    if verbose:
-        raise Exception(msg)
-    else:
-        sys.stderr.write(msg + "\n")
-        sys.exit(1)
-
-def write_pipe(c, stdin):
-    if verbose:
-        sys.stderr.write('Writing pipe: %s\n' % str(c))
-
-    expand = isinstance(c,basestring)
-    p = subprocess.Popen(c, stdin=subprocess.PIPE, shell=expand)
-    pipe = p.stdin
-    val = pipe.write(stdin)
-    pipe.close()
-    if p.wait():
-        die('Command failed: %s' % str(c))
-
-    return val
-
-def p4_write_pipe(c, stdin):
-    real_cmd = p4_build_cmd(c)
-    return write_pipe(real_cmd, stdin)
-
-def read_pipe(c, ignore_error=False):
-    if verbose:
-        sys.stderr.write('Reading pipe: %s\n' % str(c))
-
-    expand = isinstance(c,basestring)
-    p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
-    pipe = p.stdout
-    val = pipe.read()
-    if p.wait() and not ignore_error:
-        die('Command failed: %s' % str(c))
-
-    return val
-
-def p4_read_pipe(c, ignore_error=False):
-    real_cmd = p4_build_cmd(c)
-    return read_pipe(real_cmd, ignore_error)
-
-def read_pipe_lines(c):
-    if verbose:
-        sys.stderr.write('Reading pipe: %s\n' % str(c))
-
-    expand = isinstance(c, basestring)
-    p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
-    pipe = p.stdout
-    val = pipe.readlines()
-    if pipe.close() or p.wait():
-        die('Command failed: %s' % str(c))
-
-    return val
-
-def p4_read_pipe_lines(c):
-    """Specifically invoke p4 on the command supplied. """
-    real_cmd = p4_build_cmd(c)
-    return read_pipe_lines(real_cmd)
-
-def system(cmd):
-    expand = isinstance(cmd,basestring)
-    if verbose:
-        sys.stderr.write("executing %s\n" % str(cmd))
-    subprocess.check_call(cmd, shell=expand)
-
-def p4_system(cmd):
-    """Specifically invoke p4 as the system command. """
-    real_cmd = p4_build_cmd(cmd)
-    expand = isinstance(real_cmd, basestring)
-    subprocess.check_call(real_cmd, shell=expand)
-
-def p4_integrate(src, dest):
-    p4_system(["integrate", "-Dt", src, dest])
-
-def p4_sync(path):
-    p4_system(["sync", path])
-
-def p4_add(f):
-    p4_system(["add", f])
-
-def p4_delete(f):
-    p4_system(["delete", f])
-
-def p4_edit(f):
-    p4_system(["edit", f])
-
-def p4_revert(f):
-    p4_system(["revert", f])
-
-def p4_reopen(type, file):
-    p4_system(["reopen", "-t", type, file])
-
-#
-# Canonicalize the p4 type and return a tuple of the
-# base type, plus any modifiers.  See "p4 help filetypes"
-# for a list and explanation.
-#
-def split_p4_type(p4type):
-
-    p4_filetypes_historical = {
-        "ctempobj": "binary+Sw",
-        "ctext": "text+C",
-        "cxtext": "text+Cx",
-        "ktext": "text+k",
-        "kxtext": "text+kx",
-        "ltext": "text+F",
-        "tempobj": "binary+FSw",
-        "ubinary": "binary+F",
-        "uresource": "resource+F",
-        "uxbinary": "binary+Fx",
-        "xbinary": "binary+x",
-        "xltext": "text+Fx",
-        "xtempobj": "binary+Swx",
-        "xtext": "text+x",
-        "xunicode": "unicode+x",
-        "xutf16": "utf16+x",
-    }
-    if p4type in p4_filetypes_historical:
-        p4type = p4_filetypes_historical[p4type]
-    mods = ""
-    s = p4type.split("+")
-    base = s[0]
-    mods = ""
-    if len(s) > 1:
-        mods = s[1]
-    return (base, mods)
-
-#
-# return the raw p4 type of a file (text, text+ko, etc)
-#
-def p4_type(file):
-    results = p4CmdList(["fstat", "-T", "headType", file])
-    return results[0]['headType']
-
-#
-# Given a type base and modifier, return a regexp matching
-# the keywords that can be expanded in the file
-#
-def p4_keywords_regexp_for_type(base, type_mods):
-    if base in ("text", "unicode", "binary"):
-        kwords = None
-        if "ko" in type_mods:
-            kwords = 'Id|Header'
-        elif "k" in type_mods:
-            kwords = 'Id|Header|Author|Date|DateTime|Change|File|Revision'
-        else:
-            return None
-        pattern = r"""
-            \$              # Starts with a dollar, followed by...
-            (%s)            # one of the keywords, followed by...
-            (:[^$]+)?       # possibly an old expansion, followed by...
-            \$              # another dollar
-            """ % kwords
-        return pattern
-    else:
-        return None
-
-#
-# Given a file, return a regexp matching the possible
-# RCS keywords that will be expanded, or None for files
-# with kw expansion turned off.
-#
-def p4_keywords_regexp_for_file(file):
-    if not os.path.exists(file):
-        return None
-    else:
-        (type_base, type_mods) = split_p4_type(p4_type(file))
-        return p4_keywords_regexp_for_type(type_base, type_mods)
-
-def setP4ExecBit(file, mode):
-    # Reopens an already open file and changes the execute bit to match
-    # the execute bit setting in the passed in mode.
-
-    p4Type = "+x"
-
-    if not isModeExec(mode):
-        p4Type = getP4OpenedType(file)
-        p4Type = re.sub('^([cku]?)x(.*)', '\\1\\2', p4Type)
-        p4Type = re.sub('(.*?\+.*?)x(.*?)', '\\1\\2', p4Type)
-        if p4Type[-1] == "+":
-            p4Type = p4Type[0:-1]
-
-    p4_reopen(p4Type, file)
-
-def getP4OpenedType(file):
-    # Returns the perforce file type for the given file.
-
-    result = p4_read_pipe(["opened", file])
-    match = re.match(".*\((.+)\)\r?$", result)
-    if match:
-        return match.group(1)
-    else:
-        die("Could not determine file type for %s (result: '%s')" % (file, result))
-
-def diffTreePattern():
-    # This is a simple generator for the diff tree regex pattern. This could be
-    # a class variable if this and parseDiffTreeEntry were a part of a class.
-    pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)')
-    while True:
-        yield pattern
-
-def parseDiffTreeEntry(entry):
-    """Parses a single diff tree entry into its component elements.
-
-    See git-diff-tree(1) manpage for details about the format of the diff
-    output. This method returns a dictionary with the following elements:
-
-    src_mode - The mode of the source file
-    dst_mode - The mode of the destination file
-    src_sha1 - The sha1 for the source file
-    dst_sha1 - The sha1 fr the destination file
-    status - The one letter status of the diff (i.e. 'A', 'M', 'D', etc)
-    status_score - The score for the status (applicable for 'C' and 'R'
-                   statuses). This is None if there is no score.
-    src - The path for the source file.
-    dst - The path for the destination file. This is only present for
-          copy or renames. If it is not present, this is None.
-
-    If the pattern is not matched, None is returned."""
-
-    match = diffTreePattern().next().match(entry)
-    if match:
-        return {
-            'src_mode': match.group(1),
-            'dst_mode': match.group(2),
-            'src_sha1': match.group(3),
-            'dst_sha1': match.group(4),
-            'status': match.group(5),
-            'status_score': match.group(6),
-            'src': match.group(7),
-            'dst': match.group(10)
-        }
-    return None
-
-def isModeExec(mode):
-    # Returns True if the given git mode represents an executable file,
-    # otherwise False.
-    return mode[-3:] == "755"
-
-def isModeExecChanged(src_mode, dst_mode):
-    return isModeExec(src_mode) != isModeExec(dst_mode)
-
-def p4CmdList(cmd, stdin=None, stdin_mode='w+b', cb=None):
-
-    if isinstance(cmd,basestring):
-        cmd = "-G " + cmd
-        expand = True
-    else:
-        cmd = ["-G"] + cmd
-        expand = False
-
-    cmd = p4_build_cmd(cmd)
-    if verbose:
-        sys.stderr.write("Opening pipe: %s\n" % str(cmd))
-
-    # Use a temporary file to avoid deadlocks without
-    # subprocess.communicate(), which would put another copy
-    # of stdout into memory.
-    stdin_file = None
-    if stdin is not None:
-        stdin_file = tempfile.TemporaryFile(prefix='p4-stdin', mode=stdin_mode)
-        if isinstance(stdin,basestring):
-            stdin_file.write(stdin)
-        else:
-            for i in stdin:
-                stdin_file.write(i + '\n')
-        stdin_file.flush()
-        stdin_file.seek(0)
-
-    p4 = subprocess.Popen(cmd,
-                          shell=expand,
-                          stdin=stdin_file,
-                          stdout=subprocess.PIPE)
-
-    result = []
-    try:
-        while True:
-            entry = marshal.load(p4.stdout)
-            if cb is not None:
-                cb(entry)
-            else:
-                result.append(entry)
-    except EOFError:
-        pass
-    exitCode = p4.wait()
-    if exitCode != 0:
-        entry = {}
-        entry["p4ExitCode"] = exitCode
-        result.append(entry)
-
-    return result
-
-def p4Cmd(cmd):
-    list = p4CmdList(cmd)
-    result = {}
-    for entry in list:
-        result.update(entry)
-    return result;
-
-def p4Where(depotPath):
-    if not depotPath.endswith("/"):
-        depotPath += "/"
-    depotPath = depotPath + "..."
-    outputList = p4CmdList(["where", depotPath])
-    output = None
-    for entry in outputList:
-        if "depotFile" in entry:
-            if entry["depotFile"] == depotPath:
-                output = entry
-                break
-        elif "data" in entry:
-            data = entry.get("data")
-            space = data.find(" ")
-            if data[:space] == depotPath:
-                output = entry
-                break
-    if output == None:
-        return ""
-    if output["code"] == "error":
-        return ""
-    clientPath = ""
-    if "path" in output:
-        clientPath = output.get("path")
-    elif "data" in output:
-        data = output.get("data")
-        lastSpace = data.rfind(" ")
-        clientPath = data[lastSpace + 1:]
-
-    if clientPath.endswith("..."):
-        clientPath = clientPath[:-3]
-    return clientPath
-
-def currentGitBranch():
-    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
-
-def isValidGitDir(path):
-    if (os.path.exists(path + "/HEAD")
-        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
-        return True;
-    return False
-
-def parseRevision(ref):
-    return read_pipe("git rev-parse %s" % ref).strip()
-
-def branchExists(ref):
-    rev = read_pipe(["git", "rev-parse", "-q", "--verify", ref],
-                     ignore_error=True)
-    return len(rev) > 0
-
-def extractLogMessageFromGitCommit(commit):
-    logMessage = ""
-
-    ## fixme: title is first line of commit, not 1st paragraph.
-    foundTitle = False
-    for log in read_pipe_lines("git cat-file commit %s" % commit):
-       if not foundTitle:
-           if len(log) == 1:
-               foundTitle = True
-           continue
-
-       logMessage += log
-    return logMessage
-
-def extractSettingsGitLog(log):
-    values = {}
-    for line in log.split("\n"):
-        line = line.strip()
-        m = re.search (r"^ *\[git-p4: (.*)\]$", line)
-        if not m:
-            continue
-
-        assignments = m.group(1).split (':')
-        for a in assignments:
-            vals = a.split ('=')
-            key = vals[0].strip()
-            val = ('='.join (vals[1:])).strip()
-            if val.endswith ('\"') and val.startswith('"'):
-                val = val[1:-1]
-
-            values[key] = val
-
-    paths = values.get("depot-paths")
-    if not paths:
-        paths = values.get("depot-path")
-    if paths:
-        values['depot-paths'] = paths.split(',')
-    return values
-
-def gitBranchExists(branch):
-    proc = subprocess.Popen(["git", "rev-parse", branch],
-                            stderr=subprocess.PIPE, stdout=subprocess.PIPE);
-    return proc.wait() == 0;
-
-_gitConfig = {}
-def gitConfig(key, args = None): # set args to "--bool", for instance
-    if not _gitConfig.has_key(key):
-        argsFilter = ""
-        if args != None:
-            argsFilter = "%s " % args
-        cmd = "git config %s%s" % (argsFilter, key)
-        _gitConfig[key] = read_pipe(cmd, ignore_error=True).strip()
-    return _gitConfig[key]
-
-def gitConfigList(key):
-    if not _gitConfig.has_key(key):
-        _gitConfig[key] = read_pipe("git config --get-all %s" % key, ignore_error=True).strip().split(os.linesep)
-    return _gitConfig[key]
-
-def p4BranchesInGit(branchesAreInRemotes = True):
-    branches = {}
-
-    cmdline = "git rev-parse --symbolic "
-    if branchesAreInRemotes:
-        cmdline += " --remotes"
-    else:
-        cmdline += " --branches"
-
-    for line in read_pipe_lines(cmdline):
-        line = line.strip()
-
-        ## only import to p4/
-        if not line.startswith('p4/') or line == "p4/HEAD":
-            continue
-        branch = line
-
-        # strip off p4
-        branch = re.sub ("^p4/", "", line)
-
-        branches[branch] = parseRevision(line)
-    return branches
-
-def findUpstreamBranchPoint(head = "HEAD"):
-    branches = p4BranchesInGit()
-    # map from depot-path to branch name
-    branchByDepotPath = {}
-    for branch in branches.keys():
-        tip = branches[branch]
-        log = extractLogMessageFromGitCommit(tip)
-        settings = extractSettingsGitLog(log)
-        if settings.has_key("depot-paths"):
-            paths = ",".join(settings["depot-paths"])
-            branchByDepotPath[paths] = "remotes/p4/" + branch
-
-    settings = None
-    parent = 0
-    while parent < 65535:
-        commit = head + "~%s" % parent
-        log = extractLogMessageFromGitCommit(commit)
-        settings = extractSettingsGitLog(log)
-        if settings.has_key("depot-paths"):
-            paths = ",".join(settings["depot-paths"])
-            if branchByDepotPath.has_key(paths):
-                return [branchByDepotPath[paths], settings]
-
-        parent = parent + 1
-
-    return ["", settings]
-
-def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True):
-    if not silent:
-        print ("Creating/updating branch(es) in %s based on origin branch(es)"
-               % localRefPrefix)
-
-    originPrefix = "origin/p4/"
-
-    for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
-        line = line.strip()
-        if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
-            continue
-
-        headName = line[len(originPrefix):]
-        remoteHead = localRefPrefix + headName
-        originHead = line
-
-        original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
-        if (not original.has_key('depot-paths')
-            or not original.has_key('change')):
-            continue
-
-        update = False
-        if not gitBranchExists(remoteHead):
-            if verbose:
-                print "creating %s" % remoteHead
-            update = True
-        else:
-            settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
-            if settings.has_key('change') > 0:
-                if settings['depot-paths'] == original['depot-paths']:
-                    originP4Change = int(original['change'])
-                    p4Change = int(settings['change'])
-                    if originP4Change > p4Change:
-                        print ("%s (%s) is newer than %s (%s). "
-                               "Updating p4 branch from origin."
-                               % (originHead, originP4Change,
-                                  remoteHead, p4Change))
-                        update = True
-                else:
-                    print ("Ignoring: %s was imported from %s while "
-                           "%s was imported from %s"
-                           % (originHead, ','.join(original['depot-paths']),
-                              remoteHead, ','.join(settings['depot-paths'])))
-
-        if update:
-            system("git update-ref %s %s" % (remoteHead, originHead))
-
-def originP4BranchesExist():
-        return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
-
-def p4ChangesForPaths(depotPaths, changeRange):
-    assert depotPaths
-    cmd = ['changes']
-    for p in depotPaths:
-        cmd += ["%s...%s" % (p, changeRange)]
-    output = p4_read_pipe_lines(cmd)
-
-    changes = {}
-    for line in output:
-        changeNum = int(line.split(" ")[1])
-        changes[changeNum] = True
-
-    changelist = changes.keys()
-    changelist.sort()
-    return changelist
-
-def p4PathStartsWith(path, prefix):
-    # This method tries to remedy a potential mixed-case issue:
-    #
-    # If UserA adds  //depot/DirA/file1
-    # and UserB adds //depot/dira/file2
-    #
-    # we may or may not have a problem. If you have core.ignorecase=true,
-    # we treat DirA and dira as the same directory
-    ignorecase = gitConfig("core.ignorecase", "--bool") == "true"
-    if ignorecase:
-        return path.lower().startswith(prefix.lower())
-    return path.startswith(prefix)
-
-def getClientSpec():
-    """Look at the p4 client spec, create a View() object that contains
-       all the mappings, and return it."""
-
-    specList = p4CmdList("client -o")
-    if len(specList) != 1:
-        die('Output from "client -o" is %d lines, expecting 1' %
-            len(specList))
-
-    # dictionary of all client parameters
-    entry = specList[0]
-
-    # just the keys that start with "View"
-    view_keys = [ k for k in entry.keys() if k.startswith("View") ]
-
-    # hold this new View
-    view = View()
-
-    # append the lines, in order, to the view
-    for view_num in range(len(view_keys)):
-        k = "View%d" % view_num
-        if k not in view_keys:
-            die("Expected view key %s missing" % k)
-        view.append(entry[k])
-
-    return view
-
-def getClientRoot():
-    """Grab the client directory."""
-
-    output = p4CmdList("client -o")
-    if len(output) != 1:
-        die('Output from "client -o" is %d lines, expecting 1' % len(output))
-
-    entry = output[0]
-    if "Root" not in entry:
-        die('Client has no "Root"')
-
-    return entry["Root"]
-
-class Command:
-    def __init__(self):
-        self.usage = "usage: %prog [options]"
-        self.needsGit = True
-
-class P4UserMap:
-    def __init__(self):
-        self.userMapFromPerforceServer = False
-        self.myP4UserId = None
-
-    def p4UserId(self):
-        if self.myP4UserId:
-            return self.myP4UserId
-
-        results = p4CmdList("user -o")
-        for r in results:
-            if r.has_key('User'):
-                self.myP4UserId = r['User']
-                return r['User']
-        die("Could not find your p4 user id")
-
-    def p4UserIsMe(self, p4User):
-        # return True if the given p4 user is actually me
-        me = self.p4UserId()
-        if not p4User or p4User != me:
-            return False
-        else:
-            return True
-
-    def getUserCacheFilename(self):
-        home = os.environ.get("HOME", os.environ.get("USERPROFILE"))
-        return home + "/.gitp4-usercache.txt"
-
-    def getUserMapFromPerforceServer(self):
-        if self.userMapFromPerforceServer:
-            return
-        self.users = {}
-        self.emails = {}
-
-        for output in p4CmdList("users"):
-            if not output.has_key("User"):
-                continue
-            self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
-            self.emails[output["Email"]] = output["User"]
-
-
-        s = ''
-        for (key, val) in self.users.items():
-            s += "%s\t%s\n" % (key.expandtabs(1), val.expandtabs(1))
-
-        open(self.getUserCacheFilename(), "wb").write(s)
-        self.userMapFromPerforceServer = True
-
-    def loadUserMapFromCache(self):
-        self.users = {}
-        self.userMapFromPerforceServer = False
-        try:
-            cache = open(self.getUserCacheFilename(), "rb")
-            lines = cache.readlines()
-            cache.close()
-            for line in lines:
-                entry = line.strip().split("\t")
-                self.users[entry[0]] = entry[1]
-        except IOError:
-            self.getUserMapFromPerforceServer()
-
-class P4Debug(Command):
-    def __init__(self):
-        Command.__init__(self)
-        self.options = [
-            optparse.make_option("--verbose", dest="verbose", action="store_true",
-                                 default=False),
-            ]
-        self.description = "A tool to debug the output of p4 -G."
-        self.needsGit = False
-        self.verbose = False
-
-    def run(self, args):
-        j = 0
-        for output in p4CmdList(args):
-            print 'Element: %d' % j
-            j += 1
-            print output
-        return True
-
-class P4RollBack(Command):
-    def __init__(self):
-        Command.__init__(self)
-        self.options = [
-            optparse.make_option("--verbose", dest="verbose", action="store_true"),
-            optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
-        ]
-        self.description = "A tool to debug the multi-branch import. Don't use :)"
-        self.verbose = False
-        self.rollbackLocalBranches = False
-
-    def run(self, args):
-        if len(args) != 1:
-            return False
-        maxChange = int(args[0])
-
-        if "p4ExitCode" in p4Cmd("changes -m 1"):
-            die("Problems executing p4");
-
-        if self.rollbackLocalBranches:
-            refPrefix = "refs/heads/"
-            lines = read_pipe_lines("git rev-parse --symbolic --branches")
-        else:
-            refPrefix = "refs/remotes/"
-            lines = read_pipe_lines("git rev-parse --symbolic --remotes")
-
-        for line in lines:
-            if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
-                line = line.strip()
-                ref = refPrefix + line
-                log = extractLogMessageFromGitCommit(ref)
-                settings = extractSettingsGitLog(log)
-
-                depotPaths = settings['depot-paths']
-                change = settings['change']
-
-                changed = False
-
-                if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
-                                                           for p in depotPaths]))) == 0:
-                    print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
-                    system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
-                    continue
-
-                while change and int(change) > maxChange:
-                    changed = True
-                    if self.verbose:
-                        print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
-                    system("git update-ref %s \"%s^\"" % (ref, ref))
-                    log = extractLogMessageFromGitCommit(ref)
-                    settings =  extractSettingsGitLog(log)
-
-
-                    depotPaths = settings['depot-paths']
-                    change = settings['change']
-
-                if changed:
-                    print "%s rewound to %s" % (ref, change)
-
-        return True
-
-class P4Submit(Command, P4UserMap):
-    def __init__(self):
-        Command.__init__(self)
-        P4UserMap.__init__(self)
-        self.options = [
-                optparse.make_option("--verbose", dest="verbose", action="store_true"),
-                optparse.make_option("--origin", dest="origin"),
-                optparse.make_option("-M", dest="detectRenames", action="store_true"),
-                # preserve the user, requires relevant p4 permissions
-                optparse.make_option("--preserve-user", dest="preserveUser", action="store_true"),
-        ]
-        self.description = "Submit changes from git to the perforce depot."
-        self.usage += " [name of git branch to submit into perforce depot]"
-        self.interactive = True
-        self.origin = ""
-        self.detectRenames = False
-        self.verbose = False
-        self.preserveUser = gitConfig("git-p4.preserveUser").lower() == "true"
-        self.isWindows = (platform.system() == "Windows")
-
-    def check(self):
-        if len(p4CmdList("opened ...")) > 0:
-            die("You have files opened with perforce! Close them before starting the sync.")
-
-    # replaces everything between 'Description:' and the next P4 submit template field with the
-    # commit message
-    def prepareLogMessage(self, template, message):
-        result = ""
-
-        inDescriptionSection = False
-
-        for line in template.split("\n"):
-            if line.startswith("#"):
-                result += line + "\n"
-                continue
-
-            if inDescriptionSection:
-                if line.startswith("Files:") or line.startswith("Jobs:"):
-                    inDescriptionSection = False
-                else:
-                    continue
-            else:
-                if line.startswith("Description:"):
-                    inDescriptionSection = True
-                    line += "\n"
-                    for messageLine in message.split("\n"):
-                        line += "\t" + messageLine + "\n"
-
-            result += line + "\n"
-
-        return result
-
-    def patchRCSKeywords(self, file, pattern):
-        # Attempt to zap the RCS keywords in a p4 controlled file matching the given pattern
-        (handle, outFileName) = tempfile.mkstemp(dir='.')
-        try:
-            outFile = os.fdopen(handle, "w+")
-            inFile = open(file, "r")
-            regexp = re.compile(pattern, re.VERBOSE)
-            for line in inFile.readlines():
-                line = regexp.sub(r'$\1$', line)
-                outFile.write(line)
-            inFile.close()
-            outFile.close()
-            # Forcibly overwrite the original file
-            os.unlink(file)
-            shutil.move(outFileName, file)
-        except:
-            # cleanup our temporary file
-            os.unlink(outFileName)
-            print "Failed to strip RCS keywords in %s" % file
-            raise
-
-        print "Patched up RCS keywords in %s" % file
-
-    def p4UserForCommit(self,id):
-        # Return the tuple (perforce user,git email) for a given git commit id
-        self.getUserMapFromPerforceServer()
-        gitEmail = read_pipe("git log --max-count=1 --format='%%ae' %s" % id)
-        gitEmail = gitEmail.strip()
-        if not self.emails.has_key(gitEmail):
-            return (None,gitEmail)
-        else:
-            return (self.emails[gitEmail],gitEmail)
-
-    def checkValidP4Users(self,commits):
-        # check if any git authors cannot be mapped to p4 users
-        for id in commits:
-            (user,email) = self.p4UserForCommit(id)
-            if not user:
-                msg = "Cannot find p4 user for email %s in commit %s." % (email, id)
-                if gitConfig('git-p4.allowMissingP4Users').lower() == "true":
-                    print "%s" % msg
-                else:
-                    die("Error: %s\nSet git-p4.allowMissingP4Users to true to allow this." % msg)
-
-    def lastP4Changelist(self):
-        # Get back the last changelist number submitted in this client spec. This
-        # then gets used to patch up the username in the change. If the same
-        # client spec is being used by multiple processes then this might go
-        # wrong.
-        results = p4CmdList("client -o")        # find the current client
-        client = None
-        for r in results:
-            if r.has_key('Client'):
-                client = r['Client']
-                break
-        if not client:
-            die("could not get client spec")
-        results = p4CmdList(["changes", "-c", client, "-m", "1"])
-        for r in results:
-            if r.has_key('change'):
-                return r['change']
-        die("Could not get changelist number for last submit - cannot patch up user details")
-
-    def modifyChangelistUser(self, changelist, newUser):
-        # fixup the user field of a changelist after it has been submitted.
-        changes = p4CmdList("change -o %s" % changelist)
-        if len(changes) != 1:
-            die("Bad output from p4 change modifying %s to user %s" %
-                (changelist, newUser))
-
-        c = changes[0]
-        if c['User'] == newUser: return   # nothing to do
-        c['User'] = newUser
-        input = marshal.dumps(c)
-
-        result = p4CmdList("change -f -i", stdin=input)
-        for r in result:
-            if r.has_key('code'):
-                if r['code'] == 'error':
-                    die("Could not modify user field of changelist %s to %s:%s" % (changelist, newUser, r['data']))
-            if r.has_key('data'):
-                print("Updated user field for changelist %s to %s" % (changelist, newUser))
-                return
-        die("Could not modify user field of changelist %s to %s" % (changelist, newUser))
-
-    def canChangeChangelists(self):
-        # check to see if we have p4 admin or super-user permissions, either of
-        # which are required to modify changelists.
-        results = p4CmdList(["protects", self.depotPath])
-        for r in results:
-            if r.has_key('perm'):
-                if r['perm'] == 'admin':
-                    return 1
-                if r['perm'] == 'super':
-                    return 1
-        return 0
-
-    def prepareSubmitTemplate(self):
-        # remove lines in the Files section that show changes to files outside the depot path we're committing into
-        template = ""
-        inFilesSection = False
-        for line in p4_read_pipe_lines(['change', '-o']):
-            if line.endswith("\r\n"):
-                line = line[:-2] + "\n"
-            if inFilesSection:
-                if line.startswith("\t"):
-                    # path starts and ends with a tab
-                    path = line[1:]
-                    lastTab = path.rfind("\t")
-                    if lastTab != -1:
-                        path = path[:lastTab]
-                        if not p4PathStartsWith(path, self.depotPath):
-                            continue
-                else:
-                    inFilesSection = False
-            else:
-                if line.startswith("Files:"):
-                    inFilesSection = True
-
-            template += line
-
-        return template
-
-    def edit_template(self, template_file):
-        """Invoke the editor to let the user change the submission
-           message.  Return true if okay to continue with the submit."""
-
-        # if configured to skip the editing part, just submit
-        if gitConfig("git-p4.skipSubmitEdit") == "true":
-            return True
-
-        # look at the modification time, to check later if the user saved
-        # the file
-        mtime = os.stat(template_file).st_mtime
-
-        # invoke the editor
-        if os.environ.has_key("P4EDITOR"):
-            editor = os.environ.get("P4EDITOR")
-        else:
-            editor = read_pipe("git var GIT_EDITOR").strip()
-        system(editor + " " + template_file)
-
-        # If the file was not saved, prompt to see if this patch should
-        # be skipped.  But skip this verification step if configured so.
-        if gitConfig("git-p4.skipSubmitEditCheck") == "true":
-            return True
-
-        # modification time updated means user saved the file
-        if os.stat(template_file).st_mtime > mtime:
-            return True
-
-        while True:
-            response = raw_input("Submit template unchanged. Submit anyway? [y]es, [n]o (skip this patch) ")
-            if response == 'y':
-                return True
-            if response == 'n':
-                return False
-
-    def applyCommit(self, id):
-        print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
-
-        (p4User, gitEmail) = self.p4UserForCommit(id)
-
-        if not self.detectRenames:
-            # If not explicitly set check the config variable
-            self.detectRenames = gitConfig("git-p4.detectRenames")
-
-        if self.detectRenames.lower() == "false" or self.detectRenames == "":
-            diffOpts = ""
-        elif self.detectRenames.lower() == "true":
-            diffOpts = "-M"
-        else:
-            diffOpts = "-M%s" % self.detectRenames
-
-        detectCopies = gitConfig("git-p4.detectCopies")
-        if detectCopies.lower() == "true":
-            diffOpts += " -C"
-        elif detectCopies != "" and detectCopies.lower() != "false":
-            diffOpts += " -C%s" % detectCopies
-
-        if gitConfig("git-p4.detectCopiesHarder", "--bool") == "true":
-            diffOpts += " --find-copies-harder"
-
-        diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id))
-        filesToAdd = set()
-        filesToDelete = set()
-        editedFiles = set()
-        filesToChangeExecBit = {}
-
-        for line in diff:
-            diff = parseDiffTreeEntry(line)
-            modifier = diff['status']
-            path = diff['src']
-            if modifier == "M":
-                p4_edit(path)
-                if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
-                    filesToChangeExecBit[path] = diff['dst_mode']
-                editedFiles.add(path)
-            elif modifier == "A":
-                filesToAdd.add(path)
-                filesToChangeExecBit[path] = diff['dst_mode']
-                if path in filesToDelete:
-                    filesToDelete.remove(path)
-            elif modifier == "D":
-                filesToDelete.add(path)
-                if path in filesToAdd:
-                    filesToAdd.remove(path)
-            elif modifier == "C":
-                src, dest = diff['src'], diff['dst']
-                p4_integrate(src, dest)
-                if diff['src_sha1'] != diff['dst_sha1']:
-                    p4_edit(dest)
-                if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
-                    p4_edit(dest)
-                    filesToChangeExecBit[dest] = diff['dst_mode']
-                os.unlink(dest)
-                editedFiles.add(dest)
-            elif modifier == "R":
-                src, dest = diff['src'], diff['dst']
-                p4_integrate(src, dest)
-                if diff['src_sha1'] != diff['dst_sha1']:
-                    p4_edit(dest)
-                if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
-                    p4_edit(dest)
-                    filesToChangeExecBit[dest] = diff['dst_mode']
-                os.unlink(dest)
-                editedFiles.add(dest)
-                filesToDelete.add(src)
-            else:
-                die("unknown modifier %s for %s" % (modifier, path))
-
-        diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
-        patchcmd = diffcmd + " | git apply "
-        tryPatchCmd = patchcmd + "--check -"
-        applyPatchCmd = patchcmd + "--check --apply -"
-        patch_succeeded = True
-
-        if os.system(tryPatchCmd) != 0:
-            fixed_rcs_keywords = False
-            patch_succeeded = False
-            print "Unfortunately applying the change failed!"
-
-            # Patch failed, maybe it's just RCS keyword woes. Look through
-            # the patch to see if that's possible.
-            if gitConfig("git-p4.attemptRCSCleanup","--bool") == "true":
-                file = None
-                pattern = None
-                kwfiles = {}
-                for file in editedFiles | filesToDelete:
-                    # did this file's delta contain RCS keywords?
-                    pattern = p4_keywords_regexp_for_file(file)
-
-                    if pattern:
-                        # this file is a possibility...look for RCS keywords.
-                        regexp = re.compile(pattern, re.VERBOSE)
-                        for line in read_pipe_lines(["git", "diff", "%s^..%s" % (id, id), file]):
-                            if regexp.search(line):
-                                if verbose:
-                                    print "got keyword match on %s in %s in %s" % (pattern, line, file)
-                                kwfiles[file] = pattern
-                                break
-
-                for file in kwfiles:
-                    if verbose:
-                        print "zapping %s with %s" % (line,pattern)
-                    self.patchRCSKeywords(file, kwfiles[file])
-                    fixed_rcs_keywords = True
-
-            if fixed_rcs_keywords:
-                print "Retrying the patch with RCS keywords cleaned up"
-                if os.system(tryPatchCmd) == 0:
-                    patch_succeeded = True
-
-        if not patch_succeeded:
-            print "What do you want to do?"
-            response = "x"
-            while response != "s" and response != "a" and response != "w":
-                response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
-                                     "and with .rej files / [w]rite the patch to a file (patch.txt) ")
-            if response == "s":
-                print "Skipping! Good luck with the next patches..."
-                for f in editedFiles:
-                    p4_revert(f)
-                for f in filesToAdd:
-                    os.remove(f)
-                return
-            elif response == "a":
-                os.system(applyPatchCmd)
-                if len(filesToAdd) > 0:
-                    print "You may also want to call p4 add on the following files:"
-                    print " ".join(filesToAdd)
-                if len(filesToDelete):
-                    print "The following files should be scheduled for deletion with p4 delete:"
-                    print " ".join(filesToDelete)
-                die("Please resolve and submit the conflict manually and "
-                    + "continue afterwards with git-p4 submit --continue")
-            elif response == "w":
-                system(diffcmd + " > patch.txt")
-                print "Patch saved to patch.txt in %s !" % self.clientPath
-                die("Please resolve and submit the conflict manually and "
-                    "continue afterwards with git-p4 submit --continue")
-
-        system(applyPatchCmd)
-
-        for f in filesToAdd:
-            p4_add(f)
-        for f in filesToDelete:
-            p4_revert(f)
-            p4_delete(f)
-
-        # Set/clear executable bits
-        for f in filesToChangeExecBit.keys():
-            mode = filesToChangeExecBit[f]
-            setP4ExecBit(f, mode)
-
-        logMessage = extractLogMessageFromGitCommit(id)
-        logMessage = logMessage.strip()
-
-        template = self.prepareSubmitTemplate()
-
-        if self.interactive:
-            submitTemplate = self.prepareLogMessage(template, logMessage)
-
-            if self.preserveUser:
-               submitTemplate = submitTemplate + ("\n######## Actual user %s, modified after commit\n" % p4User)
-
-            if os.environ.has_key("P4DIFF"):
-                del(os.environ["P4DIFF"])
-            diff = ""
-            for editedFile in editedFiles:
-                diff += p4_read_pipe(['diff', '-du', editedFile])
-
-            newdiff = ""
-            for newFile in filesToAdd:
-                newdiff += "==== new file ====\n"
-                newdiff += "--- /dev/null\n"
-                newdiff += "+++ %s\n" % newFile
-                f = open(newFile, "r")
-                for line in f.readlines():
-                    newdiff += "+" + line
-                f.close()
-
-            if self.checkAuthorship and not self.p4UserIsMe(p4User):
-                submitTemplate += "######## git author %s does not match your p4 account.\n" % gitEmail
-                submitTemplate += "######## Use git-p4 option --preserve-user to modify authorship\n"
-                submitTemplate += "######## Use git-p4 config git-p4.skipUserNameCheck hides this message.\n"
-
-            separatorLine = "######## everything below this line is just the diff #######\n"
-
-            (handle, fileName) = tempfile.mkstemp()
-            tmpFile = os.fdopen(handle, "w+")
-            if self.isWindows:
-                submitTemplate = submitTemplate.replace("\n", "\r\n")
-                separatorLine = separatorLine.replace("\n", "\r\n")
-                newdiff = newdiff.replace("\n", "\r\n")
-            tmpFile.write(submitTemplate + separatorLine + diff + newdiff)
-            tmpFile.close()
-
-            if self.edit_template(fileName):
-                # read the edited message and submit
-                tmpFile = open(fileName, "rb")
-                message = tmpFile.read()
-                tmpFile.close()
-                submitTemplate = message[:message.index(separatorLine)]
-                if self.isWindows:
-                    submitTemplate = submitTemplate.replace("\r\n", "\n")
-                p4_write_pipe(['submit', '-i'], submitTemplate)
-
-                if self.preserveUser:
-                    if p4User:
-                        # Get last changelist number. Cannot easily get it from
-                        # the submit command output as the output is
-                        # unmarshalled.
-                        changelist = self.lastP4Changelist()
-                        self.modifyChangelistUser(changelist, p4User)
-            else:
-                # skip this patch
-                print "Submission cancelled, undoing p4 changes."
-                for f in editedFiles:
-                    p4_revert(f)
-                for f in filesToAdd:
-                    p4_revert(f)
-                    os.remove(f)
-
-            os.remove(fileName)
-        else:
-            fileName = "submit.txt"
-            file = open(fileName, "w+")
-            file.write(self.prepareLogMessage(template, logMessage))
-            file.close()
-            print ("Perforce submit template written as %s. "
-                   + "Please review/edit and then use p4 submit -i < %s to submit directly!"
-                   % (fileName, fileName))
-
-    def run(self, args):
-        if len(args) == 0:
-            self.master = currentGitBranch()
-            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
-                die("Detecting current git branch failed!")
-        elif len(args) == 1:
-            self.master = args[0]
-            if not branchExists(self.master):
-                die("Branch %s does not exist" % self.master)
-        else:
-            return False
-
-        allowSubmit = gitConfig("git-p4.allowSubmit")
-        if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","):
-            die("%s is not in git-p4.allowSubmit" % self.master)
-
-        [upstream, settings] = findUpstreamBranchPoint()
-        self.depotPath = settings['depot-paths'][0]
-        if len(self.origin) == 0:
-            self.origin = upstream
-
-        if self.preserveUser:
-            if not self.canChangeChangelists():
-                die("Cannot preserve user names without p4 super-user or admin permissions")
-
-        if self.verbose:
-            print "Origin branch is " + self.origin
-
-        if len(self.depotPath) == 0:
-            print "Internal error: cannot locate perforce depot path from existing branches"
-            sys.exit(128)
-
-        self.useClientSpec = False
-        if gitConfig("git-p4.useclientspec", "--bool") == "true":
-            self.useClientSpec = True
-        if self.useClientSpec:
-            self.clientSpecDirs = getClientSpec()
-
-        if self.useClientSpec:
-            # all files are relative to the client spec
-            self.clientPath = getClientRoot()
-        else:
-            self.clientPath = p4Where(self.depotPath)
-
-        if self.clientPath == "":
-            die("Error: Cannot locate perforce checkout of %s in client view" % self.depotPath)
-
-        print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath)
-        self.oldWorkingDirectory = os.getcwd()
-
-        # ensure the clientPath exists
-        if not os.path.exists(self.clientPath):
-            os.makedirs(self.clientPath)
-
-        chdir(self.clientPath)
-        print "Synchronizing p4 checkout..."
-        p4_sync("...")
-        self.check()
-
-        commits = []
-        for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
-            commits.append(line.strip())
-        commits.reverse()
-
-        if self.preserveUser or (gitConfig("git-p4.skipUserNameCheck") == "true"):
-            self.checkAuthorship = False
-        else:
-            self.checkAuthorship = True
-
-        if self.preserveUser:
-            self.checkValidP4Users(commits)
-
-        while len(commits) > 0:
-            commit = commits[0]
-            commits = commits[1:]
-            self.applyCommit(commit)
-            if not self.interactive:
-                break
-
-        if len(commits) == 0:
-            print "All changes applied!"
-            chdir(self.oldWorkingDirectory)
-
-            sync = P4Sync()
-            sync.run([])
-
-            rebase = P4Rebase()
-            rebase.rebase()
-
-        return True
-
-class View(object):
-    """Represent a p4 view ("p4 help views"), and map files in a
-       repo according to the view."""
-
-    class Path(object):
-        """A depot or client path, possibly containing wildcards.
-           The only one supported is ... at the end, currently.
-           Initialize with the full path, with //depot or //client."""
-
-        def __init__(self, path, is_depot):
-            self.path = path
-            self.is_depot = is_depot
-            self.find_wildcards()
-            # remember the prefix bit, useful for relative mappings
-            m = re.match("(//[^/]+/)", self.path)
-            if not m:
-                die("Path %s does not start with //prefix/" % self.path)
-            prefix = m.group(1)
-            if not self.is_depot:
-                # strip //client/ on client paths
-                self.path = self.path[len(prefix):]
-
-        def find_wildcards(self):
-            """Make sure wildcards are valid, and set up internal
-               variables."""
-
-            self.ends_triple_dot = False
-            # There are three wildcards allowed in p4 views
-            # (see "p4 help views").  This code knows how to
-            # handle "..." (only at the end), but cannot deal with
-            # "%%n" or "*".  Only check the depot_side, as p4 should
-            # validate that the client_side matches too.
-            if re.search(r'%%[1-9]', self.path):
-                die("Can't handle %%n wildcards in view: %s" % self.path)
-            if self.path.find("*") >= 0:
-                die("Can't handle * wildcards in view: %s" % self.path)
-            triple_dot_index = self.path.find("...")
-            if triple_dot_index >= 0:
-                if triple_dot_index != len(self.path) - 3:
-                    die("Can handle only single ... wildcard, at end: %s" %
-                        self.path)
-                self.ends_triple_dot = True
-
-        def ensure_compatible(self, other_path):
-            """Make sure the wildcards agree."""
-            if self.ends_triple_dot != other_path.ends_triple_dot:
-                 die("Both paths must end with ... if either does;\n" +
-                     "paths: %s %s" % (self.path, other_path.path))
-
-        def match_wildcards(self, test_path):
-            """See if this test_path matches us, and fill in the value
-               of the wildcards if so.  Returns a tuple of
-               (True|False, wildcards[]).  For now, only the ... at end
-               is supported, so at most one wildcard."""
-            if self.ends_triple_dot:
-                dotless = self.path[:-3]
-                if test_path.startswith(dotless):
-                    wildcard = test_path[len(dotless):]
-                    return (True, [ wildcard ])
-            else:
-                if test_path == self.path:
-                    return (True, [])
-            return (False, [])
-
-        def match(self, test_path):
-            """Just return if it matches; don't bother with the wildcards."""
-            b, _ = self.match_wildcards(test_path)
-            return b
-
-        def fill_in_wildcards(self, wildcards):
-            """Return the relative path, with the wildcards filled in
-               if there are any."""
-            if self.ends_triple_dot:
-                return self.path[:-3] + wildcards[0]
-            else:
-                return self.path
-
-    class Mapping(object):
-        def __init__(self, depot_side, client_side, overlay, exclude):
-            # depot_side is without the trailing /... if it had one
-            self.depot_side = View.Path(depot_side, is_depot=True)
-            self.client_side = View.Path(client_side, is_depot=False)
-            self.overlay = overlay  # started with "+"
-            self.exclude = exclude  # started with "-"
-            assert not (self.overlay and self.exclude)
-            self.depot_side.ensure_compatible(self.client_side)
-
-        def __str__(self):
-            c = " "
-            if self.overlay:
-                c = "+"
-            if self.exclude:
-                c = "-"
-            return "View.Mapping: %s%s -> %s" % \
-                   (c, self.depot_side.path, self.client_side.path)
-
-        def map_depot_to_client(self, depot_path):
-            """Calculate the client path if using this mapping on the
-               given depot path; does not consider the effect of other
-               mappings in a view.  Even excluded mappings are returned."""
-            matches, wildcards = self.depot_side.match_wildcards(depot_path)
-            if not matches:
-                return ""
-            client_path = self.client_side.fill_in_wildcards(wildcards)
-            return client_path
-
-    #
-    # View methods
-    #
-    def __init__(self):
-        self.mappings = []
-
-    def append(self, view_line):
-        """Parse a view line, splitting it into depot and client
-           sides.  Append to self.mappings, preserving order."""
-
-        # Split the view line into exactly two words.  P4 enforces
-        # structure on these lines that simplifies this quite a bit.
-        #
-        # Either or both words may be double-quoted.
-        # Single quotes do not matter.
-        # Double-quote marks cannot occur inside the words.
-        # A + or - prefix is also inside the quotes.
-        # There are no quotes unless they contain a space.
-        # The line is already white-space stripped.
-        # The two words are separated by a single space.
-        #
-        if view_line[0] == '"':
-            # First word is double quoted.  Find its end.
-            close_quote_index = view_line.find('"', 1)
-            if close_quote_index <= 0:
-                die("No first-word closing quote found: %s" % view_line)
-            depot_side = view_line[1:close_quote_index]
-            # skip closing quote and space
-            rhs_index = close_quote_index + 1 + 1
-        else:
-            space_index = view_line.find(" ")
-            if space_index <= 0:
-                die("No word-splitting space found: %s" % view_line)
-            depot_side = view_line[0:space_index]
-            rhs_index = space_index + 1
-
-        if view_line[rhs_index] == '"':
-            # Second word is double quoted.  Make sure there is a
-            # double quote at the end too.
-            if not view_line.endswith('"'):
-                die("View line with rhs quote should end with one: %s" %
-                    view_line)
-            # skip the quotes
-            client_side = view_line[rhs_index+1:-1]
-        else:
-            client_side = view_line[rhs_index:]
-
-        # prefix + means overlay on previous mapping
-        overlay = False
-        if depot_side.startswith("+"):
-            overlay = True
-            depot_side = depot_side[1:]
-
-        # prefix - means exclude this path
-        exclude = False
-        if depot_side.startswith("-"):
-            exclude = True
-            depot_side = depot_side[1:]
-
-        m = View.Mapping(depot_side, client_side, overlay, exclude)
-        self.mappings.append(m)
-
-    def map_in_client(self, depot_path):
-        """Return the relative location in the client where this
-           depot file should live.  Returns "" if the file should
-           not be mapped in the client."""
-
-        paths_filled = []
-        client_path = ""
-
-        # look at later entries first
-        for m in self.mappings[::-1]:
-
-            # see where will this path end up in the client
-            p = m.map_depot_to_client(depot_path)
-
-            if p == "":
-                # Depot path does not belong in client.  Must remember
-                # this, as previous items should not cause files to
-                # exist in this path either.  Remember that the list is
-                # being walked from the end, which has higher precedence.
-                # Overlap mappings do not exclude previous mappings.
-                if not m.overlay:
-                    paths_filled.append(m.client_side)
-
-            else:
-                # This mapping matched; no need to search any further.
-                # But, the mapping could be rejected if the client path
-                # has already been claimed by an earlier mapping (i.e.
-                # one later in the list, which we are walking backwards).
-                already_mapped_in_client = False
-                for f in paths_filled:
-                    # this is View.Path.match
-                    if f.match(p):
-                        already_mapped_in_client = True
-                        break
-                if not already_mapped_in_client:
-                    # Include this file, unless it is from a line that
-                    # explicitly said to exclude it.
-                    if not m.exclude:
-                        client_path = p
-
-                # a match, even if rejected, always stops the search
-                break
-
-        return client_path
-
-class P4Sync(Command, P4UserMap):
-    delete_actions = ( "delete", "move/delete", "purge" )
-
-    def __init__(self):
-        Command.__init__(self)
-        P4UserMap.__init__(self)
-        self.options = [
-                optparse.make_option("--branch", dest="branch"),
-                optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
-                optparse.make_option("--changesfile", dest="changesFile"),
-                optparse.make_option("--silent", dest="silent", action="store_true"),
-                optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
-                optparse.make_option("--verbose", dest="verbose", action="store_true"),
-                optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
-                                     help="Import into refs/heads/ , not refs/remotes"),
-                optparse.make_option("--max-changes", dest="maxChanges"),
-                optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
-                                     help="Keep entire BRANCH/DIR/SUBDIR prefix during import"),
-                optparse.make_option("--use-client-spec", dest="useClientSpec", action='store_true',
-                                     help="Only sync files that are included in the Perforce Client Spec")
-        ]
-        self.description = """Imports from Perforce into a git repository.\n
-    example:
-    //depot/my/project/ -- to import the current head
-    //depot/my/project/@all -- to import everything
-    //depot/my/project/@1,6 -- to import only from revision 1 to 6
-
-    (a ... is not needed in the path p4 specification, it's added implicitly)"""
-
-        self.usage += " //depot/path[@revRange]"
-        self.silent = False
-        self.createdBranches = set()
-        self.committedChanges = set()
-        self.branch = ""
-        self.detectBranches = False
-        self.detectLabels = False
-        self.changesFile = ""
-        self.syncWithOrigin = True
-        self.verbose = False
-        self.importIntoRemotes = True
-        self.maxChanges = ""
-        self.isWindows = (platform.system() == "Windows")
-        self.keepRepoPath = False
-        self.depotPaths = None
-        self.p4BranchesInGit = []
-        self.cloneExclude = []
-        self.useClientSpec = False
-        self.useClientSpec_from_options = False
-        self.clientSpecDirs = None
-        self.tempBranches = []
-        self.tempBranchLocation = "git-p4-tmp"
-
-        if gitConfig("git-p4.syncFromOrigin") == "false":
-            self.syncWithOrigin = False
-
-    #
-    # P4 wildcards are not allowed in filenames.  P4 complains
-    # if you simply add them, but you can force it with "-f", in
-    # which case it translates them into %xx encoding internally.
-    # Search for and fix just these four characters.  Do % last so
-    # that fixing it does not inadvertently create new %-escapes.
-    #
-    def wildcard_decode(self, path):
-        # Cannot have * in a filename in windows; untested as to
-        # what p4 would do in such a case.
-        if not self.isWindows:
-            path = path.replace("%2A", "*")
-        path = path.replace("%23", "#") \
-                   .replace("%40", "@") \
-                   .replace("%25", "%")
-        return path
-
-    # Force a checkpoint in fast-import and wait for it to finish
-    def checkpoint(self):
-        self.gitStream.write("checkpoint\n\n")
-        self.gitStream.write("progress checkpoint\n\n")
-        out = self.gitOutput.readline()
-        if self.verbose:
-            print "checkpoint finished: " + out
-
-    def extractFilesFromCommit(self, commit):
-        self.cloneExclude = [re.sub(r"\.\.\.$", "", path)
-                             for path in self.cloneExclude]
-        files = []
-        fnum = 0
-        while commit.has_key("depotFile%s" % fnum):
-            path =  commit["depotFile%s" % fnum]
-
-            if [p for p in self.cloneExclude
-                if p4PathStartsWith(path, p)]:
-                found = False
-            else:
-                found = [p for p in self.depotPaths
-                         if p4PathStartsWith(path, p)]
-            if not found:
-                fnum = fnum + 1
-                continue
-
-            file = {}
-            file["path"] = path
-            file["rev"] = commit["rev%s" % fnum]
-            file["action"] = commit["action%s" % fnum]
-            file["type"] = commit["type%s" % fnum]
-            files.append(file)
-            fnum = fnum + 1
-        return files
-
-    def stripRepoPath(self, path, prefixes):
-        if self.useClientSpec:
-            return self.clientSpecDirs.map_in_client(path)
-
-        if self.keepRepoPath:
-            prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
-
-        for p in prefixes:
-            if p4PathStartsWith(path, p):
-                path = path[len(p):]
-
-        return path
-
-    def splitFilesIntoBranches(self, commit):
-        branches = {}
-        fnum = 0
-        while commit.has_key("depotFile%s" % fnum):
-            path =  commit["depotFile%s" % fnum]
-            found = [p for p in self.depotPaths
-                     if p4PathStartsWith(path, p)]
-            if not found:
-                fnum = fnum + 1
-                continue
-
-            file = {}
-            file["path"] = path
-            file["rev"] = commit["rev%s" % fnum]
-            file["action"] = commit["action%s" % fnum]
-            file["type"] = commit["type%s" % fnum]
-            fnum = fnum + 1
-
-            relPath = self.stripRepoPath(path, self.depotPaths)
-
-            for branch in self.knownBranches.keys():
-
-                # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
-                if relPath.startswith(branch + "/"):
-                    if branch not in branches:
-                        branches[branch] = []
-                    branches[branch].append(file)
-                    break
-
-        return branches
-
-    # output one file from the P4 stream
-    # - helper for streamP4Files
-
-    def streamOneP4File(self, file, contents):
-        relPath = self.stripRepoPath(file['depotFile'], self.branchPrefixes)
-        relPath = self.wildcard_decode(relPath)
-        if verbose:
-            sys.stderr.write("%s\n" % relPath)
-
-        (type_base, type_mods) = split_p4_type(file["type"])
-
-        git_mode = "100644"
-        if "x" in type_mods:
-            git_mode = "100755"
-        if type_base == "symlink":
-            git_mode = "120000"
-            # p4 print on a symlink contains "target\n"; remove the newline
-            data = ''.join(contents)
-            contents = [data[:-1]]
-
-        if type_base == "utf16":
-            # p4 delivers different text in the python output to -G
-            # than it does when using "print -o", or normal p4 client
-            # operations.  utf16 is converted to ascii or utf8, perhaps.
-            # But ascii text saved as -t utf16 is completely mangled.
-            # Invoke print -o to get the real contents.
-            text = p4_read_pipe(['print', '-q', '-o', '-', file['depotFile']])
-            contents = [ text ]
-
-        if type_base == "apple":
-            # Apple filetype files will be streamed as a concatenation of
-            # its appledouble header and the contents.  This is useless
-            # on both macs and non-macs.  If using "print -q -o xx", it
-            # will create "xx" with the data, and "%xx" with the header.
-            # This is also not very useful.
-            #
-            # Ideally, someday, this script can learn how to generate
-            # appledouble files directly and import those to git, but
-            # non-mac machines can never find a use for apple filetype.
-            print "\nIgnoring apple filetype file %s" % file['depotFile']
-            return
-
-        # Perhaps windows wants unicode, utf16 newlines translated too;
-        # but this is not doing it.
-        if self.isWindows and type_base == "text":
-            mangled = []
-            for data in contents:
-                data = data.replace("\r\n", "\n")
-                mangled.append(data)
-            contents = mangled
-
-        # Note that we do not try to de-mangle keywords on utf16 files,
-        # even though in theory somebody may want that.
-        pattern = p4_keywords_regexp_for_type(type_base, type_mods)
-        if pattern:
-            regexp = re.compile(pattern, re.VERBOSE)
-            text = ''.join(contents)
-            text = regexp.sub(r'$\1$', text)
-            contents = [ text ]
-
-        self.gitStream.write("M %s inline %s\n" % (git_mode, relPath))
-
-        # total length...
-        length = 0
-        for d in contents:
-            length = length + len(d)
-
-        self.gitStream.write("data %d\n" % length)
-        for d in contents:
-            self.gitStream.write(d)
-        self.gitStream.write("\n")
-
-    def streamOneP4Deletion(self, file):
-        relPath = self.stripRepoPath(file['path'], self.branchPrefixes)
-        if verbose:
-            sys.stderr.write("delete %s\n" % relPath)
-        self.gitStream.write("D %s\n" % relPath)
-
-    # handle another chunk of streaming data
-    def streamP4FilesCb(self, marshalled):
-
-        if marshalled.has_key('depotFile') and self.stream_have_file_info:
-            # start of a new file - output the old one first
-            self.streamOneP4File(self.stream_file, self.stream_contents)
-            self.stream_file = {}
-            self.stream_contents = []
-            self.stream_have_file_info = False
-
-        # pick up the new file information... for the
-        # 'data' field we need to append to our array
-        for k in marshalled.keys():
-            if k == 'data':
-                self.stream_contents.append(marshalled['data'])
-            else:
-                self.stream_file[k] = marshalled[k]
-
-        self.stream_have_file_info = True
-
-    # Stream directly from "p4 files" into "git fast-import"
-    def streamP4Files(self, files):
-        filesForCommit = []
-        filesToRead = []
-        filesToDelete = []
-
-        for f in files:
-            # if using a client spec, only add the files that have
-            # a path in the client
-            if self.clientSpecDirs:
-                if self.clientSpecDirs.map_in_client(f['path']) == "":
-                    continue
-
-            filesForCommit.append(f)
-            if f['action'] in self.delete_actions:
-                filesToDelete.append(f)
-            else:
-                filesToRead.append(f)
-
-        # deleted files...
-        for f in filesToDelete:
-            self.streamOneP4Deletion(f)
-
-        if len(filesToRead) > 0:
-            self.stream_file = {}
-            self.stream_contents = []
-            self.stream_have_file_info = False
-
-            # curry self argument
-            def streamP4FilesCbSelf(entry):
-                self.streamP4FilesCb(entry)
-
-            fileArgs = ['%s#%s' % (f['path'], f['rev']) for f in filesToRead]
-
-            p4CmdList(["-x", "-", "print"],
-                      stdin=fileArgs,
-                      cb=streamP4FilesCbSelf)
-
-            # do the last chunk
-            if self.stream_file.has_key('depotFile'):
-                self.streamOneP4File(self.stream_file, self.stream_contents)
-
-    def make_email(self, userid):
-        if userid in self.users:
-            return self.users[userid]
-        else:
-            return "%s <a@b>" % userid
-
-    def commit(self, details, files, branch, branchPrefixes, parent = ""):
-        epoch = details["time"]
-        author = details["user"]
-        self.branchPrefixes = branchPrefixes
-
-        if self.verbose:
-            print "commit into %s" % branch
-
-        # start with reading files; if that fails, we should not
-        # create a commit.
-        new_files = []
-        for f in files:
-            if [p for p in branchPrefixes if p4PathStartsWith(f['path'], p)]:
-                new_files.append (f)
-            else:
-                sys.stderr.write("Ignoring file outside of prefix: %s\n" % f['path'])
-
-        self.gitStream.write("commit %s\n" % branch)
-#        gitStream.write("mark :%s\n" % details["change"])
-        self.committedChanges.add(int(details["change"]))
-        committer = ""
-        if author not in self.users:
-            self.getUserMapFromPerforceServer()
-        committer = "%s %s %s" % (self.make_email(author), epoch, self.tz)
-
-        self.gitStream.write("committer %s\n" % committer)
-
-        self.gitStream.write("data <<EOT\n")
-        self.gitStream.write(details["desc"])
-        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
-                             % (','.join (branchPrefixes), details["change"]))
-        if len(details['options']) > 0:
-            self.gitStream.write(": options = %s" % details['options'])
-        self.gitStream.write("]\nEOT\n\n")
-
-        if len(parent) > 0:
-            if self.verbose:
-                print "parent %s" % parent
-            self.gitStream.write("from %s\n" % parent)
-
-        self.streamP4Files(new_files)
-        self.gitStream.write("\n")
-
-        change = int(details["change"])
-
-        if self.labels.has_key(change):
-            label = self.labels[change]
-            labelDetails = label[0]
-            labelRevisions = label[1]
-            if self.verbose:
-                print "Change %s is labelled %s" % (change, labelDetails)
-
-            files = p4CmdList(["files"] + ["%s...@%s" % (p, change)
-                                                    for p in branchPrefixes])
-
-            if len(files) == len(labelRevisions):
-
-                cleanedFiles = {}
-                for info in files:
-                    if info["action"] in self.delete_actions:
-                        continue
-                    cleanedFiles[info["depotFile"]] = info["rev"]
-
-                if cleanedFiles == labelRevisions:
-                    self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
-                    self.gitStream.write("from %s\n" % branch)
-
-                    owner = labelDetails["Owner"]
-
-                    # Try to use the owner of the p4 label, or failing that,
-                    # the current p4 user id.
-                    if owner:
-                        email = self.make_email(owner)
-                    else:
-                        email = self.make_email(self.p4UserId())
-                    tagger = "%s %s %s" % (email, epoch, self.tz)
-
-                    self.gitStream.write("tagger %s\n" % tagger)
-
-                    description = labelDetails["Description"]
-                    self.gitStream.write("data %d\n" % len(description))
-                    self.gitStream.write(description)
-                    self.gitStream.write("\n")
-
-                else:
-                    if not self.silent:
-                        print ("Tag %s does not match with change %s: files do not match."
-                               % (labelDetails["label"], change))
-
-            else:
-                if not self.silent:
-                    print ("Tag %s does not match with change %s: file count is different."
-                           % (labelDetails["label"], change))
-
-    def getLabels(self):
-        self.labels = {}
-
-        l = p4CmdList(["labels"] + ["%s..." % p for p in self.depotPaths])
-        if len(l) > 0 and not self.silent:
-            print "Finding files belonging to labels in %s" % `self.depotPaths`
-
-        for output in l:
-            label = output["label"]
-            revisions = {}
-            newestChange = 0
-            if self.verbose:
-                print "Querying files for label %s" % label
-            for file in p4CmdList(["files"] +
-                                      ["%s...@%s" % (p, label)
-                                          for p in self.depotPaths]):
-                revisions[file["depotFile"]] = file["rev"]
-                change = int(file["change"])
-                if change > newestChange:
-                    newestChange = change
-
-            self.labels[newestChange] = [output, revisions]
-
-        if self.verbose:
-            print "Label changes: %s" % self.labels.keys()
-
-    def guessProjectName(self):
-        for p in self.depotPaths:
-            if p.endswith("/"):
-                p = p[:-1]
-            p = p[p.strip().rfind("/") + 1:]
-            if not p.endswith("/"):
-               p += "/"
-            return p
-
-    def getBranchMapping(self):
-        lostAndFoundBranches = set()
-
-        user = gitConfig("git-p4.branchUser")
-        if len(user) > 0:
-            command = "branches -u %s" % user
-        else:
-            command = "branches"
-
-        for info in p4CmdList(command):
-            details = p4Cmd(["branch", "-o", info["branch"]])
-            viewIdx = 0
-            while details.has_key("View%s" % viewIdx):
-                paths = details["View%s" % viewIdx].split(" ")
-                viewIdx = viewIdx + 1
-                # require standard //depot/foo/... //depot/bar/... mapping
-                if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
-                    continue
-                source = paths[0]
-                destination = paths[1]
-                ## HACK
-                if p4PathStartsWith(source, self.depotPaths[0]) and p4PathStartsWith(destination, self.depotPaths[0]):
-                    source = source[len(self.depotPaths[0]):-4]
-                    destination = destination[len(self.depotPaths[0]):-4]
-
-                    if destination in self.knownBranches:
-                        if not self.silent:
-                            print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
-                            print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
-                        continue
-
-                    self.knownBranches[destination] = source
-
-                    lostAndFoundBranches.discard(destination)
-
-                    if source not in self.knownBranches:
-                        lostAndFoundBranches.add(source)
-
-        # Perforce does not strictly require branches to be defined, so we also
-        # check git config for a branch list.
-        #
-        # Example of branch definition in git config file:
-        # [git-p4]
-        #   branchList=main:branchA
-        #   branchList=main:branchB
-        #   branchList=branchA:branchC
-        configBranches = gitConfigList("git-p4.branchList")
-        for branch in configBranches:
-            if branch:
-                (source, destination) = branch.split(":")
-                self.knownBranches[destination] = source
-
-                lostAndFoundBranches.discard(destination)
-
-                if source not in self.knownBranches:
-                    lostAndFoundBranches.add(source)
-
-
-        for branch in lostAndFoundBranches:
-            self.knownBranches[branch] = branch
-
-    def getBranchMappingFromGitBranches(self):
-        branches = p4BranchesInGit(self.importIntoRemotes)
-        for branch in branches.keys():
-            if branch == "master":
-                branch = "main"
-            else:
-                branch = branch[len(self.projectName):]
-            self.knownBranches[branch] = branch
-
-    def listExistingP4GitBranches(self):
-        # branches holds mapping from name to commit
-        branches = p4BranchesInGit(self.importIntoRemotes)
-        self.p4BranchesInGit = branches.keys()
-        for branch in branches.keys():
-            self.initialParents[self.refPrefix + branch] = branches[branch]
-
-    def updateOptionDict(self, d):
-        option_keys = {}
-        if self.keepRepoPath:
-            option_keys['keepRepoPath'] = 1
-
-        d["options"] = ' '.join(sorted(option_keys.keys()))
-
-    def readOptions(self, d):
-        self.keepRepoPath = (d.has_key('options')
-                             and ('keepRepoPath' in d['options']))
-
-    def gitRefForBranch(self, branch):
-        if branch == "main":
-            return self.refPrefix + "master"
-
-        if len(branch) <= 0:
-            return branch
-
-        return self.refPrefix + self.projectName + branch
-
-    def gitCommitByP4Change(self, ref, change):
-        if self.verbose:
-            print "looking in ref " + ref + " for change %s using bisect..." % change
-
-        earliestCommit = ""
-        latestCommit = parseRevision(ref)
-
-        while True:
-            if self.verbose:
-                print "trying: earliest %s latest %s" % (earliestCommit, latestCommit)
-            next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip()
-            if len(next) == 0:
-                if self.verbose:
-                    print "argh"
-                return ""
-            log = extractLogMessageFromGitCommit(next)
-            settings = extractSettingsGitLog(log)
-            currentChange = int(settings['change'])
-            if self.verbose:
-                print "current change %s" % currentChange
-
-            if currentChange == change:
-                if self.verbose:
-                    print "found %s" % next
-                return next
-
-            if currentChange < change:
-                earliestCommit = "^%s" % next
-            else:
-                latestCommit = "%s" % next
-
-        return ""
-
-    def importNewBranch(self, branch, maxChange):
-        # make fast-import flush all changes to disk and update the refs using the checkpoint
-        # command so that we can try to find the branch parent in the git history
-        self.gitStream.write("checkpoint\n\n");
-        self.gitStream.flush();
-        branchPrefix = self.depotPaths[0] + branch + "/"
-        range = "@1,%s" % maxChange
-        #print "prefix" + branchPrefix
-        changes = p4ChangesForPaths([branchPrefix], range)
-        if len(changes) <= 0:
-            return False
-        firstChange = changes[0]
-        #print "first change in branch: %s" % firstChange
-        sourceBranch = self.knownBranches[branch]
-        sourceDepotPath = self.depotPaths[0] + sourceBranch
-        sourceRef = self.gitRefForBranch(sourceBranch)
-        #print "source " + sourceBranch
-
-        branchParentChange = int(p4Cmd(["changes", "-m", "1", "%s...@1,%s" % (sourceDepotPath, firstChange)])["change"])
-        #print "branch parent: %s" % branchParentChange
-        gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange)
-        if len(gitParent) > 0:
-            self.initialParents[self.gitRefForBranch(branch)] = gitParent
-            #print "parent git commit: %s" % gitParent
-
-        self.importChanges(changes)
-        return True
-
-    def searchParent(self, parent, branch, target):
-        parentFound = False
-        for blob in read_pipe_lines(["git", "rev-list", "--reverse", "--no-merges", parent]):
-            blob = blob.strip()
-            if len(read_pipe(["git", "diff-tree", blob, target])) == 0:
-                parentFound = True
-                if self.verbose:
-                    print "Found parent of %s in commit %s" % (branch, blob)
-                break
-        if parentFound:
-            return blob
-        else:
-            return None
-
-    def importChanges(self, changes):
-        cnt = 1
-        for change in changes:
-            description = p4Cmd(["describe", str(change)])
-            self.updateOptionDict(description)
-
-            if not self.silent:
-                sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
-                sys.stdout.flush()
-            cnt = cnt + 1
-
-            try:
-                if self.detectBranches:
-                    branches = self.splitFilesIntoBranches(description)
-                    for branch in branches.keys():
-                        ## HACK  --hwn
-                        branchPrefix = self.depotPaths[0] + branch + "/"
-
-                        parent = ""
-
-                        filesForCommit = branches[branch]
-
-                        if self.verbose:
-                            print "branch is %s" % branch
-
-                        self.updatedBranches.add(branch)
-
-                        if branch not in self.createdBranches:
-                            self.createdBranches.add(branch)
-                            parent = self.knownBranches[branch]
-                            if parent == branch:
-                                parent = ""
-                            else:
-                                fullBranch = self.projectName + branch
-                                if fullBranch not in self.p4BranchesInGit:
-                                    if not self.silent:
-                                        print("\n    Importing new branch %s" % fullBranch);
-                                    if self.importNewBranch(branch, change - 1):
-                                        parent = ""
-                                        self.p4BranchesInGit.append(fullBranch)
-                                    if not self.silent:
-                                        print("\n    Resuming with change %s" % change);
-
-                                if self.verbose:
-                                    print "parent determined through known branches: %s" % parent
-
-                        branch = self.gitRefForBranch(branch)
-                        parent = self.gitRefForBranch(parent)
-
-                        if self.verbose:
-                            print "looking for initial parent for %s; current parent is %s" % (branch, parent)
-
-                        if len(parent) == 0 and branch in self.initialParents:
-                            parent = self.initialParents[branch]
-                            del self.initialParents[branch]
-
-                        blob = None
-                        if len(parent) > 0:
-                            tempBranch = os.path.join(self.tempBranchLocation, "%d" % (change))
-                            if self.verbose:
-                                print "Creating temporary branch: " + tempBranch
-                            self.commit(description, filesForCommit, tempBranch, [branchPrefix])
-                            self.tempBranches.append(tempBranch)
-                            self.checkpoint()
-                            blob = self.searchParent(parent, branch, tempBranch)
-                        if blob:
-                            self.commit(description, filesForCommit, branch, [branchPrefix], blob)
-                        else:
-                            if self.verbose:
-                                print "Parent of %s not found. Committing into head of %s" % (branch, parent)
-                            self.commit(description, filesForCommit, branch, [branchPrefix], parent)
-                else:
-                    files = self.extractFilesFromCommit(description)
-                    self.commit(description, files, self.branch, self.depotPaths,
-                                self.initialParent)
-                    self.initialParent = ""
-            except IOError:
-                print self.gitError.read()
-                sys.exit(1)
-
-    def importHeadRevision(self, revision):
-        print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch)
-
-        details = {}
-        details["user"] = "git perforce import user"
-        details["desc"] = ("Initial import of %s from the state at revision %s\n"
-                           % (' '.join(self.depotPaths), revision))
-        details["change"] = revision
-        newestRevision = 0
-
-        fileCnt = 0
-        fileArgs = ["%s...%s" % (p,revision) for p in self.depotPaths]
-
-        for info in p4CmdList(["files"] + fileArgs):
-
-            if 'code' in info and info['code'] == 'error':
-                sys.stderr.write("p4 returned an error: %s\n"
-                                 % info['data'])
-                if info['data'].find("must refer to client") >= 0:
-                    sys.stderr.write("This particular p4 error is misleading.\n")
-                    sys.stderr.write("Perhaps the depot path was misspelled.\n");
-                    sys.stderr.write("Depot path:  %s\n" % " ".join(self.depotPaths))
-                sys.exit(1)
-            if 'p4ExitCode' in info:
-                sys.stderr.write("p4 exitcode: %s\n" % info['p4ExitCode'])
-                sys.exit(1)
-
-
-            change = int(info["change"])
-            if change > newestRevision:
-                newestRevision = change
-
-            if info["action"] in self.delete_actions:
-                # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
-                #fileCnt = fileCnt + 1
-                continue
-
-            for prop in ["depotFile", "rev", "action", "type" ]:
-                details["%s%s" % (prop, fileCnt)] = info[prop]
-
-            fileCnt = fileCnt + 1
-
-        details["change"] = newestRevision
-
-        # Use time from top-most change so that all git-p4 clones of
-        # the same p4 repo have the same commit SHA1s.
-        res = p4CmdList("describe -s %d" % newestRevision)
-        newestTime = None
-        for r in res:
-            if r.has_key('time'):
-                newestTime = int(r['time'])
-        if newestTime is None:
-            die("\"describe -s\" on newest change %d did not give a time")
-        details["time"] = newestTime
-
-        self.updateOptionDict(details)
-        try:
-            self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
-        except IOError:
-            print "IO error with git fast-import. Is your git version recent enough?"
-            print self.gitError.read()
-
-
-    def run(self, args):
-        self.depotPaths = []
-        self.changeRange = ""
-        self.initialParent = ""
-        self.previousDepotPaths = []
-
-        # map from branch depot path to parent branch
-        self.knownBranches = {}
-        self.initialParents = {}
-        self.hasOrigin = originP4BranchesExist()
-        if not self.syncWithOrigin:
-            self.hasOrigin = False
-
-        if self.importIntoRemotes:
-            self.refPrefix = "refs/remotes/p4/"
-        else:
-            self.refPrefix = "refs/heads/p4/"
-
-        if self.syncWithOrigin and self.hasOrigin:
-            if not self.silent:
-                print "Syncing with origin first by calling git fetch origin"
-            system("git fetch origin")
-
-        if len(self.branch) == 0:
-            self.branch = self.refPrefix + "master"
-            if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
-                system("git update-ref %s refs/heads/p4" % self.branch)
-                system("git branch -D p4");
-            # create it /after/ importing, when master exists
-            if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch):
-                system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
-
-        # accept either the command-line option, or the configuration variable
-        if self.useClientSpec:
-            # will use this after clone to set the variable
-            self.useClientSpec_from_options = True
-        else:
-            if gitConfig("git-p4.useclientspec", "--bool") == "true":
-                self.useClientSpec = True
-        if self.useClientSpec:
-            self.clientSpecDirs = getClientSpec()
-
-        # TODO: should always look at previous commits,
-        # merge with previous imports, if possible.
-        if args == []:
-            if self.hasOrigin:
-                createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent)
-            self.listExistingP4GitBranches()
-
-            if len(self.p4BranchesInGit) > 1:
-                if not self.silent:
-                    print "Importing from/into multiple branches"
-                self.detectBranches = True
-
-            if self.verbose:
-                print "branches: %s" % self.p4BranchesInGit
-
-            p4Change = 0
-            for branch in self.p4BranchesInGit:
-                logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
-
-                settings = extractSettingsGitLog(logMsg)
-
-                self.readOptions(settings)
-                if (settings.has_key('depot-paths')
-                    and settings.has_key ('change')):
-                    change = int(settings['change']) + 1
-                    p4Change = max(p4Change, change)
-
-                    depotPaths = sorted(settings['depot-paths'])
-                    if self.previousDepotPaths == []:
-                        self.previousDepotPaths = depotPaths
-                    else:
-                        paths = []
-                        for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
-                            prev_list = prev.split("/")
-                            cur_list = cur.split("/")
-                            for i in range(0, min(len(cur_list), len(prev_list))):
-                                if cur_list[i] <> prev_list[i]:
-                                    i = i - 1
-                                    break
-
-                            paths.append ("/".join(cur_list[:i + 1]))
-
-                        self.previousDepotPaths = paths
-
-            if p4Change > 0:
-                self.depotPaths = sorted(self.previousDepotPaths)
-                self.changeRange = "@%s,#head" % p4Change
-                if not self.detectBranches:
-                    self.initialParent = parseRevision(self.branch)
-                if not self.silent and not self.detectBranches:
-                    print "Performing incremental import into %s git branch" % self.branch
-
-        if not self.branch.startswith("refs/"):
-            self.branch = "refs/heads/" + self.branch
-
-        if len(args) == 0 and self.depotPaths:
-            if not self.silent:
-                print "Depot paths: %s" % ' '.join(self.depotPaths)
-        else:
-            if self.depotPaths and self.depotPaths != args:
-                print ("previous import used depot path %s and now %s was specified. "
-                       "This doesn't work!" % (' '.join (self.depotPaths),
-                                               ' '.join (args)))
-                sys.exit(1)
-
-            self.depotPaths = sorted(args)
-
-        revision = ""
-        self.users = {}
-
-        # Make sure no revision specifiers are used when --changesfile
-        # is specified.
-        bad_changesfile = False
-        if len(self.changesFile) > 0:
-            for p in self.depotPaths:
-                if p.find("@") >= 0 or p.find("#") >= 0:
-                    bad_changesfile = True
-                    break
-        if bad_changesfile:
-            die("Option --changesfile is incompatible with revision specifiers")
-
-        newPaths = []
-        for p in self.depotPaths:
-            if p.find("@") != -1:
-                atIdx = p.index("@")
-                self.changeRange = p[atIdx:]
-                if self.changeRange == "@all":
-                    self.changeRange = ""
-                elif ',' not in self.changeRange:
-                    revision = self.changeRange
-                    self.changeRange = ""
-                p = p[:atIdx]
-            elif p.find("#") != -1:
-                hashIdx = p.index("#")
-                revision = p[hashIdx:]
-                p = p[:hashIdx]
-            elif self.previousDepotPaths == []:
-                # pay attention to changesfile, if given, else import
-                # the entire p4 tree at the head revision
-                if len(self.changesFile) == 0:
-                    revision = "#head"
-
-            p = re.sub ("\.\.\.$", "", p)
-            if not p.endswith("/"):
-                p += "/"
-
-            newPaths.append(p)
-
-        self.depotPaths = newPaths
-
-
-        self.loadUserMapFromCache()
-        self.labels = {}
-        if self.detectLabels:
-            self.getLabels();
-
-        if self.detectBranches:
-            ## FIXME - what's a P4 projectName ?
-            self.projectName = self.guessProjectName()
-
-            if self.hasOrigin:
-                self.getBranchMappingFromGitBranches()
-            else:
-                self.getBranchMapping()
-            if self.verbose:
-                print "p4-git branches: %s" % self.p4BranchesInGit
-                print "initial parents: %s" % self.initialParents
-            for b in self.p4BranchesInGit:
-                if b != "master":
-
-                    ## FIXME
-                    b = b[len(self.projectName):]
-                self.createdBranches.add(b)
-
-        self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
-
-        importProcess = subprocess.Popen(["git", "fast-import"],
-                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE,
-                                         stderr=subprocess.PIPE);
-        self.gitOutput = importProcess.stdout
-        self.gitStream = importProcess.stdin
-        self.gitError = importProcess.stderr
-
-        if revision:
-            self.importHeadRevision(revision)
-        else:
-            changes = []
-
-            if len(self.changesFile) > 0:
-                output = open(self.changesFile).readlines()
-                changeSet = set()
-                for line in output:
-                    changeSet.add(int(line))
-
-                for change in changeSet:
-                    changes.append(change)
-
-                changes.sort()
-            else:
-                # catch "git-p4 sync" with no new branches, in a repo that
-                # does not have any existing git-p4 branches
-                if len(args) == 0 and not self.p4BranchesInGit:
-                    die("No remote p4 branches.  Perhaps you never did \"git p4 clone\" in here.");
-                if self.verbose:
-                    print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
-                                                              self.changeRange)
-                changes = p4ChangesForPaths(self.depotPaths, self.changeRange)
-
-                if len(self.maxChanges) > 0:
-                    changes = changes[:min(int(self.maxChanges), len(changes))]
-
-            if len(changes) == 0:
-                if not self.silent:
-                    print "No changes to import!"
-                return True
-
-            if not self.silent and not self.detectBranches:
-                print "Import destination: %s" % self.branch
-
-            self.updatedBranches = set()
-
-            self.importChanges(changes)
-
-            if not self.silent:
-                print ""
-                if len(self.updatedBranches) > 0:
-                    sys.stdout.write("Updated branches: ")
-                    for b in self.updatedBranches:
-                        sys.stdout.write("%s " % b)
-                    sys.stdout.write("\n")
-
-        self.gitStream.close()
-        if importProcess.wait() != 0:
-            die("fast-import failed: %s" % self.gitError.read())
-        self.gitOutput.close()
-        self.gitError.close()
-
-        # Cleanup temporary branches created during import
-        if self.tempBranches != []:
-            for branch in self.tempBranches:
-                read_pipe("git update-ref -d %s" % branch)
-            os.rmdir(os.path.join(os.environ.get("GIT_DIR", ".git"), self.tempBranchLocation))
-
-        return True
-
-class P4Rebase(Command):
-    def __init__(self):
-        Command.__init__(self)
-        self.options = [ ]
-        self.description = ("Fetches the latest revision from perforce and "
-                            + "rebases the current work (branch) against it")
-        self.verbose = False
-
-    def run(self, args):
-        sync = P4Sync()
-        sync.run([])
-
-        return self.rebase()
-
-    def rebase(self):
-        if os.system("git update-index --refresh") != 0:
-            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.");
-        if len(read_pipe("git diff-index HEAD --")) > 0:
-            die("You have uncommited changes. Please commit them before rebasing or stash them away with git stash.");
-
-        [upstream, settings] = findUpstreamBranchPoint()
-        if len(upstream) == 0:
-            die("Cannot find upstream branchpoint for rebase")
-
-        # the branchpoint may be p4/foo~3, so strip off the parent
-        upstream = re.sub("~[0-9]+$", "", upstream)
-
-        print "Rebasing the current branch onto %s" % upstream
-        oldHead = read_pipe("git rev-parse HEAD").strip()
-        system("git rebase %s" % upstream)
-        system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
-        return True
-
-class P4Clone(P4Sync):
-    def __init__(self):
-        P4Sync.__init__(self)
-        self.description = "Creates a new git repository and imports from Perforce into it"
-        self.usage = "usage: %prog [options] //depot/path[@revRange]"
-        self.options += [
-            optparse.make_option("--destination", dest="cloneDestination",
-                                 action='store', default=None,
-                                 help="where to leave result of the clone"),
-            optparse.make_option("-/", dest="cloneExclude",
-                                 action="append", type="string",
-                                 help="exclude depot path"),
-            optparse.make_option("--bare", dest="cloneBare",
-                                 action="store_true", default=False),
-        ]
-        self.cloneDestination = None
-        self.needsGit = False
-        self.cloneBare = False
-
-    # This is required for the "append" cloneExclude action
-    def ensure_value(self, attr, value):
-        if not hasattr(self, attr) or getattr(self, attr) is None:
-            setattr(self, attr, value)
-        return getattr(self, attr)
-
-    def defaultDestination(self, args):
-        ## TODO: use common prefix of args?
-        depotPath = args[0]
-        depotDir = re.sub("(@[^@]*)$", "", depotPath)
-        depotDir = re.sub("(#[^#]*)$", "", depotDir)
-        depotDir = re.sub(r"\.\.\.$", "", depotDir)
-        depotDir = re.sub(r"/$", "", depotDir)
-        return os.path.split(depotDir)[1]
-
-    def run(self, args):
-        if len(args) < 1:
-            return False
-
-        if self.keepRepoPath and not self.cloneDestination:
-            sys.stderr.write("Must specify destination for --keep-path\n")
-            sys.exit(1)
-
-        depotPaths = args
-
-        if not self.cloneDestination and len(depotPaths) > 1:
-            self.cloneDestination = depotPaths[-1]
-            depotPaths = depotPaths[:-1]
-
-        self.cloneExclude = ["/"+p for p in self.cloneExclude]
-        for p in depotPaths:
-            if not p.startswith("//"):
-                return False
-
-        if not self.cloneDestination:
-            self.cloneDestination = self.defaultDestination(args)
-
-        print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
-
-        if not os.path.exists(self.cloneDestination):
-            os.makedirs(self.cloneDestination)
-        chdir(self.cloneDestination)
-
-        init_cmd = [ "git", "init" ]
-        if self.cloneBare:
-            init_cmd.append("--bare")
-        subprocess.check_call(init_cmd)
-
-        if not P4Sync.run(self, depotPaths):
-            return False
-        if self.branch != "master":
-            if self.importIntoRemotes:
-                masterbranch = "refs/remotes/p4/master"
-            else:
-                masterbranch = "refs/heads/p4/master"
-            if gitBranchExists(masterbranch):
-                system("git branch master %s" % masterbranch)
-                if not self.cloneBare:
-                    system("git checkout -f")
-            else:
-                print "Could not detect main branch. No checkout/master branch created."
-
-        # auto-set this variable if invoked with --use-client-spec
-        if self.useClientSpec_from_options:
-            system("git config --bool git-p4.useclientspec true")
-
-        return True
-
-class P4Branches(Command):
-    def __init__(self):
-        Command.__init__(self)
-        self.options = [ ]
-        self.description = ("Shows the git branches that hold imports and their "
-                            + "corresponding perforce depot paths")
-        self.verbose = False
-
-    def run(self, args):
-        if originP4BranchesExist():
-            createOrUpdateBranchesFromOrigin()
-
-        cmdline = "git rev-parse --symbolic "
-        cmdline += " --remotes"
-
-        for line in read_pipe_lines(cmdline):
-            line = line.strip()
-
-            if not line.startswith('p4/') or line == "p4/HEAD":
-                continue
-            branch = line
-
-            log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
-            settings = extractSettingsGitLog(log)
-
-            print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
-        return True
-
-class HelpFormatter(optparse.IndentedHelpFormatter):
-    def __init__(self):
-        optparse.IndentedHelpFormatter.__init__(self)
-
-    def format_description(self, description):
-        if description:
-            return description + "\n"
-        else:
-            return ""
-
-def printUsage(commands):
-    print "usage: %s <command> [options]" % sys.argv[0]
-    print ""
-    print "valid commands: %s" % ", ".join(commands)
-    print ""
-    print "Try %s <command> --help for command specific help." % sys.argv[0]
-    print ""
-
-commands = {
-    "debug" : P4Debug,
-    "submit" : P4Submit,
-    "commit" : P4Submit,
-    "sync" : P4Sync,
-    "rebase" : P4Rebase,
-    "clone" : P4Clone,
-    "rollback" : P4RollBack,
-    "branches" : P4Branches
-}
-
-
-def main():
-    if len(sys.argv[1:]) == 0:
-        printUsage(commands.keys())
-        sys.exit(2)
-
-    cmd = ""
-    cmdName = sys.argv[1]
-    try:
-        klass = commands[cmdName]
-        cmd = klass()
-    except KeyError:
-        print "unknown command %s" % cmdName
-        print ""
-        printUsage(commands.keys())
-        sys.exit(2)
-
-    options = cmd.options
-    cmd.gitdir = os.environ.get("GIT_DIR", None)
-
-    args = sys.argv[2:]
-
-    if len(options) > 0:
-        if cmd.needsGit:
-            options.append(optparse.make_option("--git-dir", dest="gitdir"))
-
-        parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
-                                       options,
-                                       description = cmd.description,
-                                       formatter = HelpFormatter())
-
-        (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
-    global verbose
-    verbose = cmd.verbose
-    if cmd.needsGit:
-        if cmd.gitdir == None:
-            cmd.gitdir = os.path.abspath(".git")
-            if not isValidGitDir(cmd.gitdir):
-                cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
-                if os.path.exists(cmd.gitdir):
-                    cdup = read_pipe("git rev-parse --show-cdup").strip()
-                    if len(cdup) > 0:
-                        chdir(cdup);
-
-        if not isValidGitDir(cmd.gitdir):
-            if isValidGitDir(cmd.gitdir + "/.git"):
-                cmd.gitdir += "/.git"
-            else:
-                die("fatal: cannot locate git repository at %s" % cmd.gitdir)
-
-        os.environ["GIT_DIR"] = cmd.gitdir
-
-    if not cmd.run(args):
-        parser.print_help()
-        sys.exit(2)
-
-
-if __name__ == '__main__':
-    main()
diff --git a/contrib/fast-import/git-p4.README b/contrib/fast-import/git-p4.README
new file mode 100644
index 0000000000..cec5ecfa7c
--- /dev/null
+++ b/contrib/fast-import/git-p4.README
@@ -0,0 +1,12 @@
+The git-p4 script moved to the top-level of the git source directory.
+
+Invoke it as any other git command, like "git p4 clone", for instance.
+
+Note that the top-level git-p4.py script is now the source.  It is
+built using make to git-p4, which will be installed.
+
+Windows users can copy the git-p4.py source script directly, possibly
+invoking it through a batch file called "git-p4.bat" in the same folder.
+It should contain just one line:
+
+    @python "%~d0%~p0git-p4.py" %*
diff --git a/contrib/fast-import/git-p4.bat b/contrib/fast-import/git-p4.bat
deleted file mode 100644
index 9f97e884f5..0000000000
--- a/contrib/fast-import/git-p4.bat
+++ /dev/null
@@ -1 +0,0 @@
-@python "%~d0%~p0git-p4" %*