#!/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 sys
if sys.hexversion < 0x02040000:
# The limiter is the subprocess module
sys.stderr.write("git-p4: requires Python 2.4 or later.\n")
sys.exit(1)
import os
import optparse
import marshal
import subprocess
import tempfile
import time
import platform
import re
import shutil
import stat
import zipfile
import zlib
import ctypes
import errno
# support basestring in python3
try:
unicode = unicode
except NameError:
# 'unicode' is undefined, must be Python 3
str = str
unicode = str
bytes = bytes
basestring = (str,bytes)
else:
# 'unicode' exists, must be Python 2
str = str
unicode = unicode
bytes = str
basestring = basestring
try:
from subprocess import CalledProcessError
except ImportError:
# from python2.7:subprocess.py
# Exception classes used by this module.
class CalledProcessError(Exception):
"""This exception is raised when a process run by check_call() returns
a non-zero exit status. The exit status will be stored in the
returncode attribute."""
def __init__(self, returncode, cmd):
self.returncode = returncode
self.cmd = cmd
def __str__(self):
return "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
verbose = False
# Only labels/tags matching this will be imported/exported
defaultLabelRegexp = r'[a-zA-Z0-9_\-.]+$'
# The block size is reduced automatically if required
defaultBlockSize = 1<<20
p4_access_checked = 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]
retries = gitConfigInt("git-p4.retries")
if retries is None:
# Perform 3 retries by default
retries = 3
if retries > 0:
# Provide a way to not pass this option by setting git-p4.retries to 0
real_cmd += ["-r", str(retries)]
if isinstance(cmd,basestring):
real_cmd = ' '.join(real_cmd) + ' ' + cmd
else:
real_cmd += cmd
# now check that we can actually talk to the server
global p4_access_checked
if not p4_access_checked:
p4_access_checked = True # suppress access checks in p4_check_access itself
p4_check_access()
return real_cmd
def git_dir(path):
""" Return TRUE if the given path is a git directory (/path/to/dir/.git).
This won't automatically add ".git" to a directory.
"""
d = read_pipe(["git", "--git-dir", path, "rev-parse", "--git-dir"], True).strip()
if not d or len(d) == 0:
return None
else:
return d
def chdir(path, is_client_path=False):
"""Do chdir to the given path, and set the PWD environment
variable for use by P4. It does not look at getcwd() output.
Since we're not using the shell, it is necessary to set the
PWD environment variable explicitly.
Normally, expand the path to force it to be absolute. This
addresses the use of relative path names inside P4 settings,
e.g. P4CONFIG=.p4config. P4 does not simply open the filename
as given; it looks for .p4config using PWD.
If is_client_path, the path was handed to us directly by p4,
and may be a symbolic link. Do not call os.getcwd() in this
case, because it will cause p4 to think that PWD is not inside
the client path.
"""
os.chdir(path)
if not is_client_path:
path = os.getcwd()
os.environ['PWD'] = path
def calcDiskFree():
"""Return free space in bytes on the disk of the given dirname."""
if platform.system() == 'Windows':
free_bytes = ctypes.c_ulonglong(0)
ctypes.windll.kernel32.GetDiskFreeSpaceExW(ctypes.c_wchar_p(os.getcwd()), None, None, ctypes.pointer(free_bytes))
return free_bytes.value
else:
st = os.statvfs(os.getcwd())
return st.f_bavail * st.f_frsize
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_full(c):
""" Read output from command. Returns a tuple
of the return status, stdout text and stderr
text.
"""
if verbose:
sys.stderr.write('Reading pipe: %s\n' % str(c))
expand = isinstance(c,basestring)
p = subprocess.Popen(c, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=expand)
(out, err) = p.communicate()
return (p.returncode, out, err)
def read_pipe(c, ignore_error=False):
""" Read output from command. Returns the output text on
success. On failure, terminates execution, unless
ignore_error is True, when it returns an empty string.
"""
(retcode, out, err) = read_pipe_full(c)
if retcode != 0:
if ignore_error:
out = ""
else:
die('Command failed: %s\nError: %s' % (str(c), err))
return out
def read_pipe_text(c):
""" Read output from a command with trailing whitespace stripped.
On error, returns None.
"""
(retcode, out, err) = read_pipe_full(c)
if retcode != 0:
return None
else:
return out.rstrip()
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 p4_has_command(cmd):
"""Ask p4 for help on this command. If it returns an error, the
command does not exist in this version of p4."""
real_cmd = p4_build_cmd(["help", cmd])
p = subprocess.Popen(real_cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
p.communicate()
return p.returncode == 0
def p4_has_move_command():
"""See if the move command exists, that it supports -k, and that
it has not been administratively disabled. The arguments
must be correct, but the filenames do not have to exist. Use
ones with wildcards so even if they exist, it will fail."""
if not p4_has_command("move"):
return False
cmd = p4_build_cmd(["move", "-k", "@from", "@to"])
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = p.communicate()
# return code will be 1 in either case
if err.find("Invalid option") >= 0:
return False
if err.find("disabled") >= 0:
return False
# assume it failed because @... was invalid changelist
return True
def system(cmd, ignore_error=False):
expand = isinstance(cmd,basestring)
if verbose:
sys.stderr.write("executing %s\n" % str(cmd))
retcode = subprocess.call(cmd, shell=expand)
if retcode and not ignore_error:
raise CalledProcessError(retcode, cmd)
return retcode
def p4_system(cmd):
"""Specifically invoke p4 as the system command. """
real_cmd = p4_build_cmd(cmd)
expand = isinstance(real_cmd, basestring)
retcode = subprocess.call(real_cmd, shell=expand)
if retcode:
raise CalledProcessError(retcode, real_cmd)
def die_bad_access(s):
die("failure accessing depot: {0}".format(s.rstrip()))
def p4_check_access(min_expiration=1):
""" Check if we can access Perforce - account still logged in
"""
results = p4CmdList(["login", "-s"])
if len(results) == 0:
# should never get here: always get either some results, or a p4ExitCode
assert("could not parse response from perforce")
result = results[0]
if 'p4ExitCode' in result:
# p4 returned non-zero status, e.g. P4PORT invalid, or p4 not in path
die_bad_access("could not run p4")
code = result.get("code")
if not code:
# we get here if we couldn't connect and there was nothing to unmarshal
die_bad_access("could not connect")
elif code == "stat":
expiry = result.get("TicketExpiration")
if expiry:
expiry = int(expiry)
if expiry > min_expiration:
# ok to carry on
return
else:
die_bad_access("perforce ticket expires in {0} seconds".format(expiry))
else:
# account without a timeout - all ok
return
elif code == "error":
data = result.get("data")
if data:
die_bad_access("p4 error: {0}".format(data))
else:
die_bad_access("unknown error")
elif code == "info":
return
else:
die_bad_access("unknown error code {0}".format(code))
_p4_version_string = None
def p4_version_string():
"""Read the version string, showing just the last line, which
hopefully is the interesting version bit.
$ p4 -V
Perforce - The Fast Software Configuration Management System.
Copyright 1995-2011 Perforce Software. All rights reserved.
Rev. P4/NTX86/2011.1/393975 (2011/12/16).
"""
global _p4_version_string
if not _p4_version_string:
a = p4_read_pipe_lines(["-V"])
_p4_version_string = a[-1].rstrip()
return _p4_version_string
def p4_integrate(src, dest):
p4_system(["integrate", "-Dt", wildcard_encode(src), wildcard_encode(dest)])
def p4_sync(f, *options):
p4_system(["sync"] + list(options) + [wildcard_encode(f)])
def p4_add(f):
# forcibly add file names with wildcards
if wildcard_present(f):
p4_system(["add", "-f", f])
else:
p4_system(["add", f])
def p4_delete(f):
p4_system(["delete", wildcard_encode(f)])
def p4_edit(f, *options):
p4_system(["edit"] + list(options) + [wildcard_encode(f)])
def p4_revert(f):
p4_system(["revert", wildcard_encode(f)])
def p4_reopen(type, f):
p4_system(["reopen", "-t", type, wildcard_encode(f)])
def p4_reopen_in_change(changelist, files):
cmd = ["reopen", "-c", str(changelist)] + files
p4_system(cmd)
def p4_move(src, dest):
p4_system(["move", "-k", wildcard_encode(src), wildcard_encode(dest)])
def p4_last_change():
results = p4CmdList(["changes", "-m", "1"], skip_info=True)
return int(results[0]['change'])
def p4_describe(change, shelved=False):
"""Make sure it returns a valid result by checking for
the presence of field "time". Return a dict of the
results."""
cmd = ["describe", "-s"]
if shelved:
cmd += ["-S"]
cmd += [str(change)]
ds = p4CmdList(cmd, skip_info=True)
if len(ds) != 1:
die("p4 describe -s %d did not return 1 result: %s" % (change, str(ds)))
d = ds[0]
if "p4ExitCode" in d:
die("p4 describe -s %d exited with %d: %s" % (change, d["p4ExitCode"],
str(d)))
if "code" in d:
if d["code"] == "error":
die("p4 describe -s %d returned error code: %s" % (change, str(d)))
if "time" not in d:
die("p4 describe -s %d returned no \"time\": %s" % (change, str(d)))
return d
#
# 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(f):
results = p4CmdList(["fstat", "-T", "headType", wildcard_encode(f)])
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...
(:[^$\n]+)? # 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", wildcard_encode(file)])
match = re.match(".*\((.+)\)( \*exclusive\*)?\r?$", result)
if match:
return match.group(1)
else:
die("Could not determine file type for %s (result: '%s')" % (file, result))
# Return the set of all p4 labels
def getP4Labels(depotPaths):
labels = set()
if isinstance(depotPaths,basestring):
depotPaths = [depotPaths]
for l in p4CmdList(["labels"] + ["%s..." % p for p in depotPaths]):
label = l['label']
labels.add(label)
return labels
# Return the set of all git tags
def getGitTags():
gitTags = set()
for line in read_pipe_lines(["git", "tag"]):
tag = line.strip()
gitTags.add(tag)
return gitTags
def diffTreePattern():
# This is a simple generator for the diff tree regex pattern. This could be
# a class variable if this and parseDiffTreeEntry were a part of a class.
pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)')
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"
class P4Exception(Exception):
""" Base class for exceptions from the p4 client """
def __init__(self, exit_code):
self.p4ExitCode = exit_code
class P4ServerException(P4Exception):
""" Base class for exceptions where we get some kind of marshalled up result from the server """
def __init__(self, exit_code, p4_result):
super(P4ServerException, self).__init__(exit_code)
self.p4_result = p4_result
self.code = p4_result[0]['code']
self.data = p4_result[0]['data']
class P4RequestSizeException(P4ServerException):
""" One of the maxresults or maxscanrows errors """
def __init__(self, exit_code, p4_result, limit):
super(P4RequestSizeException, self).__init__(exit_code, p4_result)
self.limit = limit
def isModeExecChanged(src_mode, dst_mode):
return isModeExec(src_mode) != isModeExec(dst_mode)
def p4CmdList(cmd, stdin=None, stdin_mode='w+b', cb=None, skip_info=False,
errors_as_exceptions=False):
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 skip_info:
if 'code' in entry and entry['code'] == 'info':
continue
if cb is not None:
cb(entry)
else:
result.append(entry)
except EOFError:
pass
exitCode = p4.wait()
if exitCode != 0:
if errors_as_exceptions:
if len(result) > 0:
data = result[0].get('data')
if data:
m = re.search('Too many rows scanned \(over (\d+)\)', data)
if not m:
m = re.search('Request too large \(over (\d+)\)', data)
if m:
limit = int(m.group(1))
raise P4RequestSizeException(exitCode, result, limit)
raise P4ServerException(exitCode, result)
else:
raise P4Exception(exitCode)
else:
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 += "/"
depotPathLong = depotPath + "..."
outputList = p4CmdList(["where", depotPathLong])
output = None
for entry in outputList:
if "depotFile" in entry:
# Search for the base client side depot path, as long as it starts with the branch's P4 path.
# The base path always ends with "/...".
if entry["depotFile"].find(depotPath) == 0 and entry["depotFile"][-4:] == "/...":
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_text(["git", "symbolic-ref", "--short", "-q", "HEAD"])
def isValidGitDir(path):
return git_dir(path) != None
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", 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;
def gitUpdateRef(ref, newvalue):
subprocess.check_call(["git", "update-ref", ref, newvalue])
def gitDeleteRef(ref):
subprocess.check_call(["git", "update-ref", "-d", ref])
_gitConfig = {}
def gitConfig(key, typeSpecifier=None):
if key not in _gitConfig:
cmd = [ "git", "config" ]
if typeSpecifier:
cmd += [ typeSpecifier ]
cmd += [ key ]
s = read_pipe(cmd, ignore_error=True)
_gitConfig[key] = s.strip()
return _gitConfig[key]
def gitConfigBool(key):
"""Return a bool, using git config --bool. It is True only if the
variable is set to true, and False if set to false or not present
in the config."""
if key not in _gitConfig:
_gitConfig[key] = gitConfig(key, '--bool') == "true"
return _gitConfig[key]
def gitConfigInt(key):
if key not in _gitConfig:
cmd = [ "git", "config", "--int", key ]
s = read_pipe(cmd, ignore_error=True)
v = s.strip()
try:
_gitConfig[key] = int(gitConfig(key, '--int'))
except ValueError:
_gitConfig[key] = None
return _gitConfig[key]
def gitConfigList(key):
if key not in _gitConfig:
s = read_pipe(["git", "config", "--get-all", key], ignore_error=True)
_gitConfig[key] = s.strip().splitlines()
if _gitConfig[key] == ['']:
_gitConfig[key] = []
return _gitConfig[key]
def p4BranchesInGit(branchesAreInRemotes=True):
"""Find all the branches whose names start with "p4/", looking
in remotes or heads as specified by the argument. Return
a dictionary of { branch: revision } for each one found.
The branch names are the short names, without any
"p4/" prefix."""
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/'):
continue
# special symbolic ref to p4/master
if line == "p4/HEAD":
continue
# strip off p4/ prefix
branch = line[len("p4/"):]
branches[branch] = parseRevision(line)
return branches
def branch_exists(branch):
"""Make sure that the given ref name really exists."""
cmd = [ "git", "rev-parse", "--symbolic", "--verify", branch ]
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, _ = p.communicate()
if p.returncode:
return False
# expect exactly one line of output: the branch name
return out.rstrip() == branch
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 "depot-paths" in settings:
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 "depot-paths" in settings:
paths = ",".join(settings["depot-paths"])
if paths in branchByDepotPath:
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 ('depot-paths' not in original
or 'change' not in original):
continue
update = False
if not gitBranchExists(remoteHead):
if verbose:
print("creating %s" % remoteHead)
update = True
else:
settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
if 'change' in settings:
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 p4ParseNumericChangeRange(parts):
changeStart = int(parts[0][1:])
if parts[1] == '#head':
changeEnd = p4_last_change()
else:
changeEnd = int(parts[1])
return (changeStart, changeEnd)
def chooseBlockSize(blockSize):
if blockSize:
return blockSize
else:
return defaultBlockSize
def p4ChangesForPaths(depotPaths, changeRange, requestedBlockSize):
assert depotPaths
# Parse the change range into start and end. Try to find integer
# revision ranges as these can be broken up into blocks to avoid
# hitting server-side limits (maxrows, maxscanresults). But if
# that doesn't work, fall back to using the raw revision specifier
# strings, without using block mode.
if changeRange is None or changeRange == '':
changeStart = 1
changeEnd = p4_last_change()
block_size = chooseBlockSize(requestedBlockSize)
else:
parts = changeRange.split(',')
assert len(parts) == 2
try:
(changeStart, changeEnd) = p4ParseNumericChangeRange(parts)
block_size = chooseBlockSize(requestedBlockSize)
except ValueError:
changeStart = parts[0][1:]
changeEnd = parts[1]
if requestedBlockSize:
die("cannot use --changes-block-size with non-numeric revisions")
block_size = None
changes = set()
# Retrieve changes a block at a time, to prevent running
# into a MaxResults/MaxScanRows error from the server. If
# we _do_ hit one of those errors, turn down the block size
while True:
cmd = ['changes']
if block_size:
end = min(changeEnd, changeStart + block_size)
revisionRange = "%d,%d" % (changeStart, end)
else:
revisionRange = "%s,%s" % (changeStart, changeEnd)
for p in depotPaths:
cmd += ["%s...@%s" % (p, revisionRange)]
# fetch the changes
try:
result = p4CmdList(cmd, errors_as_exceptions=True)
except P4RequestSizeException as e:
if not block_size:
block_size = e.limit
elif block_size > e.limit:
block_size = e.limit
else:
block_size = max(2, block_size // 2)
if verbose: print("block size error, retrying with block size {0}".format(block_size))
continue
except P4Exception as e:
die('Error retrieving changes description ({0})'.format(e.p4ExitCode))
# Insert changes in chronological order
for entry in reversed(result):
if 'change' not in entry:
continue
changes.add(int(entry['change']))
if not block_size:
break
if end >= changeEnd:
break
changeStart = end + 1
changes = sorted(changes)
return changes
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
if gitConfigBool("core.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]
# the //client/ name
client_name = entry["Client"]
# 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(client_name)
# 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"]
#
# 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.
#
def wildcard_decode(path):
# Search for and fix just these four characters. Do % last so
# that fixing it does not inadvertently create new %-escapes.
# Cannot have * in a filename in windows; untested as to
# what p4 would do in such a case.
if not platform.system() == "Windows":
path = path.replace("%2A", "*")
path = path.replace("%23", "#") \
.replace("%40", "@") \
.replace("%25", "%")
return path
def wildcard_encode(path):
# do % first to avoid double-encoding the %s introduced here
path = path.replace("%", "%25") \
.replace("*", "%2A") \
.replace("#", "%23") \
.replace("@", "%40")
return path
def wildcard_present(path):
m = re.search("[*#@%]", path)
return m is not None
class LargeFileSystem(object):
"""Base class for large file system support."""
def __init__(self, writeToGitStream):
self.largeFiles = set()
self.writeToGitStream = writeToGitStream
def generatePointer(self, cloneDestination, contentFile):
"""Return the content of a pointer file that is stored in Git instead of
the actual content."""
assert False, "Method 'generatePointer' required in " + self.__class__.__name__
def pushFile(self, localLargeFile):
"""Push the actual content which is not stored in the Git repository to
a server."""
assert False, "Method 'pushFile' required in " + self.__class__.__name__
def hasLargeFileExtension(self, relPath):
return reduce(
lambda a, b: a or b,
[relPath.endswith('.' + e) for e in gitConfigList('git-p4.largeFileExtensions')],
False
)
def generateTempFile(self, contents):
contentFile = tempfile.NamedTemporaryFile(prefix='git-p4-large-file', delete=False)
for d in contents:
contentFile.write(d)
contentFile.close()
return contentFile.name
def exceedsLargeFileThreshold(self, relPath, contents):
if gitConfigInt('git-p4.largeFileThreshold'):
contentsSize = sum(len(d) for d in contents)
if contentsSize > gitConfigInt('git-p4.largeFileThreshold'):
return True
if gitConfigInt('git-p4.largeFileCompressedThreshold'):
contentsSize = sum(len(d) for d in contents)
if contentsSize <= gitConfigInt('git-p4.largeFileCompressedThreshold'):
return False
contentTempFile = self.generateTempFile(contents)
compressedContentFile = tempfile.NamedTemporaryFile(prefix='git-p4-large-file', delete=False)
zf = zipfile.ZipFile(compressedContentFile.name, mode='w')
zf.write(contentTempFile, compress_type=zipfile.ZIP_DEFLATED)
zf.close()
compressedContentsSize = zf.infolist()[0].compress_size
os.remove(contentTempFile)
os.remove(compressedContentFile.name)
if compressedContentsSize > gitConfigInt('git-p4.largeFileCompressedThreshold'):
return True
return False
def addLargeFile(self, relPath):
self.largeFiles.add(relPath)
def removeLargeFile(self, relPath):
self.largeFiles.remove(relPath)
def isLargeFile(self, relPath):
return relPath in self.largeFiles
def processContent(self, git_mode, relPath, contents):
"""Processes the content of git fast import. This method decides if a
file is stored in the large file system and handles all necessary
steps."""
if self.exceedsLargeFileThreshold(relPath, contents) or self.hasLargeFileExtension(relPath):
contentTempFile = self.generateTempFile(contents)
(pointer_git_mode, contents, localLargeFile) = self.generatePointer(contentTempFile)
if pointer_git_mode:
git_mode = pointer_git_mode
if localLargeFile:
# Move temp file to final location in large file system
largeFileDir = os.path.dirname(localLargeFile)
if not os.path.isdir(largeFileDir):
os.makedirs(largeFileDir)
shutil.move(contentTempFile, localLargeFile)
self.addLargeFile(relPath)
if gitConfigBool('git-p4.largeFilePush'):
self.pushFile(localLargeFile)
if verbose:
sys.stderr.write("%s moved to large file system (%s)\n" % (relPath, localLargeFile))
return (git_mode, contents)
class MockLFS(LargeFileSystem):
"""Mock large file system for testing."""
def generatePointer(self, contentFile):
"""The pointer content is the original content prefixed with "pointer-".
The local filename of the large file storage is derived from the file content.
"""
with open(contentFile, 'r') as f:
content = next(f)
gitMode = '100644'
pointerContents = 'pointer-' + content
localLargeFile = os.path.join(os.getcwd(), '.git', 'mock-storage', 'local', content[:-1])
return (gitMode, pointerContents, localLargeFile)
def pushFile(self, localLargeFile):
"""The remote filename of the large file storage is the same as the local
one but in a different directory.
"""
remotePath = os.path.join(os.path.dirname(localLargeFile), '..', 'remote')
if not os.path.exists(remotePath):
os.makedirs(remotePath)
shutil.copyfile(localLargeFile, os.path.join(remotePath, os.path.basename(localLargeFile)))
class GitLFS(LargeFileSystem):
"""Git LFS as backend for the git-p4 large file system.
See https://git-lfs.github.com/ for details."""
def __init__(self, *args):
LargeFileSystem.__init__(self, *args)
self.baseGitAttributes = []
def generatePointer(self, contentFile):
"""Generate a Git LFS pointer for the content. Return LFS Pointer file
mode and content which is stored in the Git repository instead of
the actual content. Return also the new location of the actual
content.
"""
if os.path.getsize(contentFile) == 0:
return (None, '', None)
pointerProcess = subprocess.Popen(
['git', 'lfs', 'pointer', '--file=' + contentFile],
stdout=subprocess.PIPE
)
pointerFile = pointerProcess.stdout.read()
if pointerProcess.wait():
os.remove(contentFile)
die('git-lfs pointer command failed. Did you install the extension?')
# Git LFS removed the preamble in the output of the 'pointer' command
# starting from version 1.2.0. Check for the preamble here to support
# earlier versions.
# c.f. https://github.com/github/git-lfs/commit/da2935d9a739592bc775c98d8ef4df9c72ea3b43
if pointerFile.startswith('Git LFS pointer for'):
pointerFile = re.sub(r'Git LFS pointer for.*\n\n', '', pointerFile)
oid = re.search(r'^oid \w+:(\w+)', pointerFile, re.MULTILINE).group(1)
localLargeFile = os.path.join(
os.getcwd(),
'.git', 'lfs', 'objects', oid[:2], oid[2:4],
oid,
)
# LFS Spec states that pointer files should not have the executable bit set.
gitMode = '100644'
return (gitMode, pointerFile, localLargeFile)
def pushFile(self, localLargeFile):
uploadProcess = subprocess.Popen(
['git', 'lfs', 'push', '--object-id', 'origin', os.path.basename(localLargeFile)]
)
if uploadProcess.wait():
die('git-lfs push command failed. Did you define a remote?')
def generateGitAttributes(self):
return (
self.baseGitAttributes +
[
'\n',
'#\n',
'# Git LFS (see https://git-lfs.github.com/)\n',
'#\n',
] +
['*.' + f.replace(' ', '[[:space:]]') + ' filter=lfs diff=lfs merge=lfs -text\n'
for f in sorted(gitConfigList('git-p4.largeFileExtensions'))
] +
['/' + f.replace(' ', '[[:space:]]') + ' filter=lfs diff=lfs merge=lfs -text\n'
for f in sorted(self.largeFiles) if not self.hasLargeFileExtension(f)
]
)
def addLargeFile(self, relPath):
LargeFileSystem.addLargeFile(self, relPath)
self.writeToGitStream('100644', '.gitattributes', self.generateGitAttributes())
def removeLargeFile(self, relPath):
LargeFileSystem.removeLargeFile(self, relPath)
self.writeToGitStream('100644', '.gitattributes', self.generateGitAttributes())
def processContent(self, git_mode, relPath, contents):
if relPath == '.gitattributes':
self.baseGitAttributes = contents
return (git_mode, self.generateGitAttributes())
else:
return LargeFileSystem.processContent(self, git_mode, relPath, contents)
class Command:
delete_actions = ( "delete", "move/delete", "purge" )
add_actions = ( "add", "branch", "move/add" )
def __init__(self):
self.usage = "usage: %prog [options]"
self.needsGit = True
self.verbose = False
# This is required for the "append" update_shelve 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)
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 'User' in r:
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 "User" not in output:
continue
self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
self.emails[output["Email"]] = output["User"]
mapUserConfigRegex = re.compile(r"^\s*(\S+)\s*=\s*(.+)\s*<(\S+)>\s*$", re.VERBOSE)
for mapUserConfig in gitConfigList("git-p4.mapUser"):
mapUser = mapUserConfigRegex.findall(mapUserConfig)
if mapUser and len(mapUser[0]) == 3:
user = mapUser[0][0]
fullname = mapUser[0][1]
email = mapUser[0][2]
self.users[user] = fullname + " <" + email + ">"
self.emails[email] = 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 = []
self.description = "A tool to debug the output of p4 -G."
self.needsGit = 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("--local", dest="rollbackLocalBranches", action="store_true")
]
self.description = "A tool to debug the multi-branch import. Don't use :)"
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):
conflict_behavior_choices = ("ask", "skip", "quit")
def __init__(self):
Command.__init__(self)
P4UserMap.__init__(self)
self.options = [
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"),
optparse.make_option("--export-labels", dest="exportLabels", action="store_true"),
optparse.make_option("--dry-run", "-n", dest="dry_run", action="store_true"),
optparse.make_option("--prepare-p4-only", dest="prepare_p4_only", action="store_true"),
optparse.make_option("--conflict", dest="conflict_behavior",
choices=self.conflict_behavior_choices),
optparse.make_option("--branch", dest="branch"),
optparse.make_option("--shelve", dest="shelve", action="store_true",
help="Shelve instead of submit. Shelved files are reverted, "
"restoring the workspace to the state before the shelve"),
optparse.make_option("--update-shelve", dest="update_shelve", action="append", type="int",
metavar="CHANGELIST",
help="update an existing shelved changelist, implies --shelve, "
"repeat in-order for multiple shelved changelists"),
optparse.make_option("--commit", dest="commit", metavar="COMMIT",
help="submit only the specified commit(s), one commit or xxx..xxx"),
optparse.make_option("--disable-rebase", dest="disable_rebase", action="store_true",
help="Disable rebase after submit is completed. Can be useful if you "
"work from a local git branch that is not master"),
optparse.make_option("--disable-p4sync", dest="disable_p4sync", action="store_true",
help="Skip Perforce sync of p4/master after submit or shelve"),
]
self.description = """Submit changes from git to the perforce depot.\n
The `p4-pre-submit` hook is executed if it exists and is executable.
The hook takes no parameters and nothing from standard input. Exiting with
non-zero status from this script prevents `git-p4 submit` from launching.
One usage scenario is to run unit tests in the hook."""
self.usage += " [name of git branch to submit into perforce depot]"
self.origin = ""
self.detectRenames = False
self.preserveUser = gitConfigBool("git-p4.preserveUser")
self.dry_run = False
self.shelve = False
self.update_shelve = list()
self.commit = ""
self.disable_rebase = gitConfigBool("git-p4.disableRebase")
self.disable_p4sync = gitConfigBool("git-p4.disableP4Sync")
self.prepare_p4_only = False
self.conflict_behavior = None
self.isWindows = (platform.system() == "Windows")
self.exportLabels = False
self.p4HasMoveCommand = p4_has_move_command()
self.branch = None
if gitConfig('git-p4.largeFileSystem'):
die("Large file system not supported for git-p4 submit command. Please remove it from config.")
def check(self):
if len(p4CmdList("opened ...")) > 0:
die("You have files opened with perforce! Close them before starting the sync.")
def separate_jobs_from_description(self, message):
"""Extract and return a possible Jobs field in the commit
message. It goes into a separate section in the p4 change
specification.
A jobs line starts with "Jobs:" and looks like a new field
in a form. Values are white-space separated on the same
line or on following lines that start with a tab.
This does not parse and extract the full git commit message
like a p4 form. It just sees the Jobs: line as a marker
to pass everything from then on directly into the p4 form,
but outside the description section.
Return a tuple (stripped log message, jobs string)."""
m = re.search(r'^Jobs:', message, re.MULTILINE)
if m is None:
return (message, None)
jobtext = message[m.start():]
stripped_message = message[:m.start()].rstrip()
return (stripped_message, jobtext)
def prepareLogMessage(self, template, message, jobs):
"""Edits the template returned from "p4 change -o" to insert
the message in the Description field, and the jobs text in
the Jobs field."""
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
# insert Jobs section
if jobs:
result += jobs + "\n"
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", id])
gitEmail = gitEmail.strip()
if gitEmail not in self.emails:
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 gitConfigBool("git-p4.allowMissingP4Users"):
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 'Client' in r:
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 'change' in r:
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 'code' in r:
if r['code'] == 'error':
die("Could not modify user field of changelist %s to %s:%s" % (changelist, newUser, r['data']))
if 'data' in r:
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 'perm' in r:
if r['perm'] == 'admin':
return 1
if r['perm'] == 'super':
return 1
return 0
def prepareSubmitTemplate(self, changelist=None):
"""Run "p4 change -o" to grab a change specification template.
This does not use "p4 -G", as it is nice to keep the submission
template in original order, since a human might edit it.
Remove lines in the Files section that show changes to files
outside the depot path we're committing into."""
[upstream, settings] = findUpstreamBranchPoint()
template = """\
# A Perforce Change Specification.
#
# Change: The change number. 'new' on a new changelist.
# Date: The date this specification was last modified.
# Client: The client on which the changelist was created. Read-only.
# User: The user who created the changelist.
# Status: Either 'pending' or 'submitted'. Read-only.
# Type: Either 'public' or 'restricted'. Default is 'public'.
# Description: Comments about the changelist. Required.
# Jobs: What opened jobs are to be closed by this changelist.
# You may delete jobs from this list. (New changelists only.)
# Files: What opened files from the default changelist are to be added
# to this changelist. You may delete files from this list.
# (New changelists only.)
"""
files_list = []
inFilesSection = False
change_entry = None
args = ['change', '-o']
if changelist:
args.append(str(changelist))
for entry in p4CmdList(args):
if 'code' not in entry:
continue
if entry['code'] == 'stat':
change_entry = entry
break
if not change_entry:
die('Failed to decode output of p4 change -o')
for key, value in change_entry.iteritems():
if key.startswith('File'):
if 'depot-paths' in settings:
if not [p for p in settings['depot-paths']
if p4PathStartsWith(value, p)]:
continue
else:
if not p4PathStartsWith(value, self.depotPath):
continue
files_list.append(value)
continue
# Output in the order expected by prepareLogMessage
for key in ['Change', 'Client', 'User', 'Status', 'Description', 'Jobs']:
if key not in change_entry:
continue
template += '\n'
template += key + ':'
if key == 'Description':
template += '\n'
for field_line in change_entry[key].splitlines():
template += '\t'+field_line+'\n'
if len(files_list) > 0:
template += '\n'
template += 'Files:\n'
for path in files_list:
template += '\t'+path+'\n'
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 gitConfigBool("git-p4.skipSubmitEdit"):
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 "P4EDITOR" in os.environ and (os.environ.get("P4EDITOR") != ""):
editor = os.environ.get("P4EDITOR")
else:
editor = read_pipe("git var GIT_EDITOR").strip()
system(["sh", "-c", ('%s "$@"' % editor), 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 gitConfigBool("git-p4.skipSubmitEditCheck"):
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 get_diff_description(self, editedFiles, filesToAdd, symlinks):
# diff
if "P4DIFF" in os.environ:
del(os.environ["P4DIFF"])
diff = ""
for editedFile in editedFiles:
diff += p4_read_pipe(['diff', '-du',
wildcard_encode(editedFile)])
# new file diff
newdiff = ""
for newFile in filesToAdd:
newdiff += "==== new file ====\n"
newdiff += "--- /dev/null\n"
newdiff += "+++ %s\n" % newFile
is_link = os.path.islink(newFile)
expect_link = newFile in symlinks
if is_link and expect_link:
newdiff += "+%s\n" % os.readlink(newFile)
else:
f = open(newFile, "r")
for line in f.readlines():
newdiff += "+" + line
f.close()
return (diff + newdiff).replace('\r\n', '\n')
def applyCommit(self, id):
"""Apply one commit, return True if it succeeded."""
print("Applying", read_pipe(["git", "show", "-s",
"--format=format:%h %s", id]))
(p4User, gitEmail) = self.p4UserForCommit(id)
diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (self.diffOpts, id, id))
filesToAdd = set()
filesToChangeType = set()
filesToDelete = set()
editedFiles = set()
pureRenameCopy = set()
symlinks = set()
filesToChangeExecBit = {}
all_files = list()
for line in diff:
diff = parseDiffTreeEntry(line)
modifier = diff['status']
path = diff['src']
all_files.append(path)
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)
dst_mode = int(diff['dst_mode'], 8)
if dst_mode == 0o120000:
symlinks.add(path)
elif modifier == "D":
filesToDelete.add(path)
if path in filesToAdd:
filesToAdd.remove(path)
elif modifier == "C":
src, dest = diff['src'], diff['dst']
all_files.append(dest)
p4_integrate(src, dest)
pureRenameCopy.add(dest)
if diff['src_sha1'] != diff['dst_sha1']:
p4_edit(dest)
pureRenameCopy.discard(dest)
if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
p4_edit(dest)
pureRenameCopy.discard(dest)
filesToChangeExecBit[dest] = diff['dst_mode']
if self.isWindows:
# turn off read-only attribute
os.chmod(dest, stat.S_IWRITE)
os.unlink(dest)
editedFiles.add(dest)
elif modifier == "R":
src, dest = diff['src'], diff['dst']
all_files.append(dest)
if self.p4HasMoveCommand:
p4_edit(src) # src must be open before move
p4_move(src, dest) # opens for (move/delete, move/add)
else:
p4_integrate(src, dest)
if diff['src_sha1'] != diff['dst_sha1']:
p4_edit(dest)
else:
pureRenameCopy.add(dest)
if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
if not self.p4HasMoveCommand:
p4_edit(dest) # with move: already open, writable
filesToChangeExecBit[dest] = diff['dst_mode']
if not self.p4HasMoveCommand:
if self.isWindows:
os.chmod(dest, stat.S_IWRITE)
os.unlink(dest)
filesToDelete.add(src)
editedFiles.add(dest)
elif modifier == "T":
filesToChangeType.add(path)
else:
die("unknown modifier %s for %s" % (modifier, path))
diffcmd = "git diff-tree --full-index -p \"%s\"" % (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 gitConfigBool("git-p4.attemptRCSCleanup"):
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))
# File is being deleted, so not open in p4. Must
# disable the read-only bit on windows.
if self.isWindows and file not in editedFiles:
os.chmod(file, stat.S_IWRITE)
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:
for f in editedFiles:
p4_revert(f)
return False
#
# Apply the patch for real, and do add/delete/+x handling.
#
system(applyPatchCmd)
for f in filesToChangeType:
p4_edit(f, "-t", "auto")
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)
update_shelve = 0
if len(self.update_shelve) > 0:
update_shelve = self.update_shelve.pop(0)
p4_reopen_in_change(update_shelve, all_files)
#
# Build p4 change description, starting with the contents
# of the git commit message.
#
logMessage = extractLogMessageFromGitCommit(id)
logMessage = logMessage.strip()
(logMessage, jobs) = self.separate_jobs_from_description(logMessage)
template = self.prepareSubmitTemplate(update_shelve)
submitTemplate = self.prepareLogMessage(template, logMessage, jobs)
if self.preserveUser:
submitTemplate += "\n######## Actual user %s, modified after commit\n" % p4User
if self.checkAuthorship and not self.p4UserIsMe(p4User):
submitTemplate += "######## git author %s does not match your p4 account.\n" % gitEmail
submitTemplate += "######## Use option --preserve-user to modify authorship.\n"
submitTemplate += "######## Variable git-p4.skipUserNameCheck hides this message.\n"
separatorLine = "######## everything below this line is just the diff #######\n"
if not self.prepare_p4_only:
submitTemplate += separatorLine
submitTemplate += self.get_diff_description(editedFiles, filesToAdd, symlinks)
(handle, fileName) = tempfile.mkstemp()
tmpFile = os.fdopen(handle, "w+b")
if self.isWindows:
submitTemplate = submitTemplate.replace("\n", "\r\n")
tmpFile.write(submitTemplate)
tmpFile.close()
if self.prepare_p4_only:
#
# Leave the p4 tree prepared, and the submit template around
# and let the user decide what to do next
#
print()
print("P4 workspace prepared for submission.")
print("To submit or revert, go to client workspace")
print(" " + self.clientPath)
print()
print("To submit, use \"p4 submit\" to write a new description,")
print("or \"p4 submit -i <%s\" to use the one prepared by" \
" \"git p4\"." % fileName)
print("You can delete the file \"%s\" when finished." % fileName)
if self.preserveUser and p4User and not self.p4UserIsMe(p4User):
print("To preserve change ownership by user %s, you must\n" \
"do \"p4 change -f <change>\" after submitting and\n" \
"edit the User field.")
if pureRenameCopy:
print("After submitting, renamed files must be re-synced.")
print("Invoke \"p4 sync -f\" on each of these files:")
for f in pureRenameCopy:
print(" " + f)
print()
print("To revert the changes, use \"p4 revert ...\", and delete")
print("the submit template file \"%s\"" % fileName)
if filesToAdd:
print("Since the commit adds new files, they must be deleted:")
for f in filesToAdd:
print(" " + f)
print()
return True
#
# Let the user edit the change description, then submit it.
#
submitted = False
try:
if self.edit_template(fileName):
# read the edited message and submit
tmpFile = open(fileName, "rb")
message = tmpFile.read()
tmpFile.close()
if self.isWindows:
message = message.replace("\r\n", "\n")
submitTemplate = message[:message.index(separatorLine)]
if update_shelve:
p4_write_pipe(['shelve', '-r', '-i'], submitTemplate)
elif self.shelve:
p4_write_pipe(['shelve', '-i'], submitTemplate)
else:
p4_write_pipe(['submit', '-i'], submitTemplate)
# The rename/copy happened by applying a patch that created a
# new file. This leaves it writable, which confuses p4.
for f in pureRenameCopy:
p4_sync(f, "-f")
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)
submitted = True
finally:
# skip this patch
if not submitted or self.shelve:
if self.shelve:
print ("Reverting shelved files.")
else:
print ("Submission cancelled, undoing p4 changes.")
for f in editedFiles | filesToDelete:
p4_revert(f)
for f in filesToAdd:
p4_revert(f)
os.remove(f)
os.remove(fileName)
return submitted
# Export git tags as p4 labels. Create a p4 label and then tag
# with that.
def exportGitTags(self, gitTags):
validLabelRegexp = gitConfig("git-p4.labelExportRegexp")
if len(validLabelRegexp) == 0:
validLabelRegexp = defaultLabelRegexp
m = re.compile(validLabelRegexp)
for name in gitTags:
if not m.match(name):
if verbose:
print("tag %s does not match regexp %s" % (name, validLabelRegexp))
continue
# Get the p4 commit this corresponds to
logMessage = extractLogMessageFromGitCommit(name)
values = extractSettingsGitLog(logMessage)
if 'change' not in values:
# a tag pointing to something not sent to p4; ignore
if verbose:
print("git tag %s does not give a p4 commit" % name)
continue
else:
changelist = values['change']
# Get the tag details.
inHeader = True
isAnnotated = False
body = []
for l in read_pipe_lines(["git", "cat-file", "-p", name]):
l = l.strip()
if inHeader:
if re.match(r'tag\s+', l):
isAnnotated = True
elif re.match(r'\s*$', l):
inHeader = False
continue
else:
body.append(l)
if not isAnnotated:
body = ["lightweight tag imported by git p4\n"]
# Create the label - use the same view as the client spec we are using
clientSpec = getClientSpec()
labelTemplate = "Label: %s\n" % name
labelTemplate += "Description:\n"
for b in body:
labelTemplate += "\t" + b + "\n"
labelTemplate += "View:\n"
for depot_side in clientSpec.mappings:
labelTemplate += "\t%s\n" % depot_side
if self.dry_run:
print("Would create p4 label %s for tag" % name)
elif self.prepare_p4_only:
print("Not creating p4 label %s for tag due to option" \
" --prepare-p4-only" % name)
else:
p4_write_pipe(["label", "-i"], labelTemplate)
# Use the label
p4_system(["tag", "-l", name] +
["%s@%s" % (depot_side, changelist) for depot_side in clientSpec.mappings])
if verbose:
print("created p4 label for tag %s" % name)
def run(self, args):
if len(args) == 0:
self.master = currentGitBranch()
elif len(args) == 1:
self.master = args[0]
if not branchExists(self.master):
die("Branch %s does not exist" % self.master)
else:
return False
for i in self.update_shelve:
if i <= 0:
sys.exit("invalid changelist %d" % i)
if self.master:
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 len(self.update_shelve) > 0:
self.shelve = True
if self.preserveUser:
if not self.canChangeChangelists():
die("Cannot preserve user names without p4 super-user or admin permissions")
# if not set from the command line, try the config file
if self.conflict_behavior is None:
val = gitConfig("git-p4.conflict")
if val:
if val not in self.conflict_behavior_choices:
die("Invalid value '%s' for config git-p4.conflict" % val)
else:
val = "ask"
self.conflict_behavior = val
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 gitConfigBool("git-p4.useclientspec"):
self.useClientSpec = True
if self.useClientSpec:
self.clientSpecDirs = getClientSpec()
# Check for the existence of P4 branches
branchesDetected = (len(p4BranchesInGit().keys()) > 1)
if self.useClientSpec and not branchesDetected:
# 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
new_client_dir = False
if not os.path.exists(self.clientPath):
new_client_dir = True
os.makedirs(self.clientPath)
chdir(self.clientPath, is_client_path=True)
if self.dry_run:
print("Would synchronize p4 checkout in %s" % self.clientPath)
else:
print("Synchronizing p4 checkout...")
if new_client_dir:
# old one was destroyed, and maybe nobody told p4
p4_sync("...", "-f")
else:
p4_sync("...")
self.check()
commits = []
if self.master:
committish = self.master
else:
committish = 'HEAD'
if self.commit != "":
if self.commit.find("..") != -1:
limits_ish = self.commit.split("..")
for line in read_pipe_lines(["git", "rev-list", "--no-merges", "%s..%s" % (limits_ish[0], limits_ish[1])]):
commits.append(line.strip())
commits.reverse()
else:
commits.append(self.commit)
else:
for line in read_pipe_lines(["git", "rev-list", "--no-merges", "%s..%s" % (self.origin, committish)]):
commits.append(line.strip())
commits.reverse()
if self.preserveUser or gitConfigBool("git-p4.skipUserNameCheck"):
self.checkAuthorship = False
else:
self.checkAuthorship = True
if self.preserveUser:
self.checkValidP4Users(commits)
#
# Build up a set of options to be passed to diff when
# submitting each commit to p4.
#
if self.detectRenames:
# command-line -M arg
self.diffOpts = "-M"
else:
# If not explicitly set check the config variable
detectRenames = gitConfig("git-p4.detectRenames")
if detectRenames.lower() == "false" or detectRenames == "":
self.diffOpts = ""
elif detectRenames.lower() == "true":
self.diffOpts = "-M"
else:
self.diffOpts = "-M%s" % detectRenames
# no command-line arg for -C or --find-copies-harder, just
# config variables
detectCopies = gitConfig("git-p4.detectCopies")
if detectCopies.lower() == "false" or detectCopies == "":
pass
elif detectCopies.lower() == "true":
self.diffOpts += " -C"
else:
self.diffOpts += " -C%s" % detectCopies
if gitConfigBool("git-p4.detectCopiesHarder"):
self.diffOpts += " --find-copies-harder"
num_shelves = len(self.update_shelve)
if num_shelves > 0 and num_shelves != len(commits):
sys.exit("number of commits (%d) must match number of shelved changelist (%d)" %
(len(commits), num_shelves))
hooks_path = gitConfig("core.hooksPath")
if len(hooks_path) <= 0:
hooks_path = os.path.join(os.environ.get("GIT_DIR", ".git"), "hooks")
hook_file = os.path.join(hooks_path, "p4-pre-submit")
if os.path.isfile(hook_file) and os.access(hook_file, os.X_OK) and subprocess.call([hook_file]) != 0:
sys.exit(1)
#
# Apply the commits, one at a time. On failure, ask if should
# continue to try the rest of the patches, or quit.
#
if self.dry_run:
print("Would apply")
applied = []
last = len(commits) - 1
for i, commit in enumerate(commits):
if self.dry_run:
print(" ", read_pipe(["git", "show", "-s",
"--format=format:%h %s", commit]))
ok = True
else:
ok = self.applyCommit(commit)
if ok:
applied.append(commit)
else:
if self.prepare_p4_only and i < last:
print("Processing only the first commit due to option" \
" --prepare-p4-only")
break
if i < last:
quit = False
while True:
# prompt for what to do, or use the option/variable
if self.conflict_behavior == "ask":
print("What do you want to do?")
response = raw_input("[s]kip this commit but apply"
" the rest, or [q]uit? ")
if not response:
continue
elif self.conflict_behavior == "skip":
response = "s"
elif self.conflict_behavior == "quit":
response = "q"
else:
die("Unknown conflict_behavior '%s'" %
self.conflict_behavior)
if response[0] == "s":
print("Skipping this commit, but applying the rest")
break
if response[0] == "q":
print("Quitting")
quit = True
break
if quit:
break
chdir(self.oldWorkingDirectory)
shelved_applied = "shelved" if self.shelve else "applied"
if self.dry_run:
pass
elif self.prepare_p4_only:
pass
elif len(commits) == len(applied):
print("All commits {0}!".format(shelved_applied))
sync = P4Sync()
if self.branch:
sync.branch = self.branch
if self.disable_p4sync:
sync.sync_origin_only()
else:
sync.run([])
if not self.disable_rebase:
rebase = P4Rebase()
rebase.rebase()
else:
if len(applied) == 0:
print("No commits {0}.".format(shelved_applied))
else:
print("{0} only the commits marked with '*':".format(shelved_applied.capitalize()))
for c in commits:
if c in applied:
star = "*"
else:
star = " "
print(star, read_pipe(["git", "show", "-s",
"--format=format:%h %s", c]))
print("You will have to do 'git p4 sync' and rebase.")
if gitConfigBool("git-p4.exportLabels"):
self.exportLabels = True
if self.exportLabels:
p4Labels = getP4Labels(self.depotPath)
gitTags = getGitTags()
missingGitTags = gitTags - p4Labels
self.exportGitTags(missingGitTags)
# exit with error unless everything applied perfectly
if len(commits) != len(applied):
sys.exit(1)
return True
class View(object):
"""Represent a p4 view ("p4 help views"), and map files in a
repo according to the view."""
def __init__(self, client_name):
self.mappings = []
self.client_prefix = "//%s/" % client_name
# cache results of "p4 where" to lookup client file locations
self.client_spec_path_cache = {}
def append(self, view_line):
"""Parse a view line, splitting it into depot and client
sides. Append to self.mappings, preserving order. This
is only needed for tag creation."""
# 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
# prefix + means overlay on previous mapping
if depot_side.startswith("+"):
depot_side = depot_side[1:]
# prefix - means exclude this path, leave out of mappings
exclude = False
if depot_side.startswith("-"):
exclude = True
depot_side = depot_side[1:]
if not exclude:
self.mappings.append(depot_side)
def convert_client_path(self, clientFile):
# chop off //client/ part to make it relative
if not clientFile.startswith(self.client_prefix):
die("No prefix '%s' on clientFile '%s'" %
(self.client_prefix, clientFile))
return clientFile[len(self.client_prefix):]
def update_client_spec_path_cache(self, files):
""" Caching file paths by "p4 where" batch query """
# List depot file paths exclude that already cached
fileArgs = [f['path'] for f in files if f['path'] not in self.client_spec_path_cache]
if len(fileArgs) == 0:
return # All files in cache
where_result = p4CmdList(["-x", "-", "where"], stdin=fileArgs)
for res in where_result:
if "code" in res and res["code"] == "error":
# assume error is "... file(s) not in client view"
continue
if "clientFile" not in res:
die("No clientFile in 'p4 where' output")
if "unmap" in res:
# it will list all of them, but only one not unmap-ped
continue
if gitConfigBool("core.ignorecase"):
res['depotFile'] = res['depotFile'].lower()
self.client_spec_path_cache[res['depotFile']] = self.convert_client_path(res["clientFile"])
# not found files or unmap files set to ""
for depotFile in fileArgs:
if gitConfigBool("core.ignorecase"):
depotFile = depotFile.lower()
if depotFile not in self.client_spec_path_cache:
self.client_spec_path_cache[depotFile] = ""
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."""
if gitConfigBool("core.ignorecase"):
depot_path = depot_path.lower()
if depot_path in self.client_spec_path_cache:
return self.client_spec_path_cache[depot_path]
die( "Error: %s is not found in client spec path" % depot_path )
return ""
def cloneExcludeCallback(option, opt_str, value, parser):
# prepend "/" because the first "/" was consumed as part of the option itself.
# ("-//depot/A/..." becomes "/depot/A/..." after option parsing)
parser.values.cloneExclude += ["/" + re.sub(r"\.\.\.$", "", value)]
class P4Sync(Command, P4UserMap):
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("--import-labels", dest="importLabels", 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",
help="Maximum number of changes to import"),
optparse.make_option("--changes-block-size", dest="changes_block_size", type="int",
help="Internal block size to use when iteratively calling p4 changes"),
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"),
optparse.make_option("-/", dest="cloneExclude",
action="callback", callback=cloneExcludeCallback, type="string",
help="exclude depot path"),
]
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.importLabels = False
self.changesFile = ""
self.syncWithOrigin = True
self.importIntoRemotes = True
self.maxChanges = ""
self.changes_block_size = None
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 = "refs/git-p4-tmp"
self.largeFileSystem = None
self.suppress_meta_comment = False
if gitConfig('git-p4.largeFileSystem'):
largeFileSystemConstructor = globals()[gitConfig('git-p4.largeFileSystem')]
self.largeFileSystem = largeFileSystemConstructor(
lambda git_mode, relPath, contents: self.writeToGitStream(git_mode, relPath, contents)
)
if gitConfig("git-p4.syncFromOrigin") == "false":
self.syncWithOrigin = False
self.depotPaths = []
self.changeRange = ""
self.previousDepotPaths = []
self.hasOrigin = False
# map from branch depot path to parent branch
self.knownBranches = {}
self.initialParents = {}
self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
self.labels = {}
# 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 isPathWanted(self, path):
for p in self.cloneExclude:
if p.endswith("/"):
if p4PathStartsWith(path, p):
return False
# "-//depot/file1" without a trailing "/" should only exclude "file1", but not "file111" or "file1_dir/file2"
elif path.lower() == p.lower():
return False
for p in self.depotPaths:
if p4PathStartsWith(path, p):
return True
return False
def extractFilesFromCommit(self, commit, shelved=False, shelved_cl = 0):
files = []
fnum = 0
while "depotFile%s" % fnum in commit:
path = commit["depotFile%s" % fnum]
found = self.isPathWanted(path)
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]
if shelved:
file["shelved_cl"] = int(shelved_cl)
files.append(file)
fnum = fnum + 1
return files
def extractJobsFromCommit(self, commit):
jobs = []
jnum = 0
while "job%s" % jnum in commit:
job = commit["job%s" % jnum]
jobs.append(job)
jnum = jnum + 1
return jobs
def stripRepoPath(self, path, prefixes):
"""When streaming files, this is called to map a p4 depot path
to where it should go in git. The prefixes are either
self.depotPaths, or self.branchPrefixes in the case of
branch detection."""
if self.useClientSpec:
# branch detection moves files up a level (the branch name)
# from what client spec interpretation gives
path = self.clientSpecDirs.map_in_client(path)
if self.detectBranches:
for b in self.knownBranches:
if p4PathStartsWith(path, b + "/"):
path = path[len(b)+1:]
elif self.keepRepoPath:
# Preserve everything in relative path name except leading
# //depot/; just look at first prefix as they all should
# be in the same depot.
depot = re.sub("^(//[^/]+/).*", r'\1', prefixes[0])
if p4PathStartsWith(path, depot):
path = path[len(depot):]
else:
for p in prefixes:
if p4PathStartsWith(path, p):
path = path[len(p):]
break
path = wildcard_decode(path)
return path
def splitFilesIntoBranches(self, commit):
"""Look at each depotFile in the commit to figure out to what
branch it belongs."""
if self.clientSpecDirs:
files = self.extractFilesFromCommit(commit)
self.clientSpecDirs.update_client_spec_path_cache(files)
branches = {}
fnum = 0
while "depotFile%s" % fnum in commit:
path = commit["depotFile%s" % fnum]
found = self.isPathWanted(path)
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
# start with the full relative path where this file would
# go in a p4 client
if self.useClientSpec:
relPath = self.clientSpecDirs.map_in_client(path)
else:
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, e.g.
if p4PathStartsWith(relPath, branch + "/"):
if branch not in branches:
branches[branch] = []
branches[branch].append(file)
break
return branches
def writeToGitStream(self, gitMode, relPath, contents):
self.gitStream.write('M %s inline %s\n' % (gitMode, relPath))
self.gitStream.write('data %d\n' % sum(len(d) for d in contents))
for d in contents:
self.gitStream.write(d)
self.gitStream.write('\n')
def encodeWithUTF8(self, path):
try:
path.decode('ascii')
except:
encoding = 'utf8'
if gitConfig('git-p4.pathEncoding'):
encoding = gitConfig('git-p4.pathEncoding')
path = path.decode(encoding, 'replace').encode('utf8', 'replace')
if self.verbose:
print('Path with non-ASCII characters detected. Used %s to encode: %s ' % (encoding, path))
return path
# output one file from the P4 stream
# - helper for streamP4Files
def streamOneP4File(self, file, contents):
relPath = self.stripRepoPath(file['depotFile'], self.branchPrefixes)
relPath = self.encodeWithUTF8(relPath)
if verbose:
if 'fileSize' in self.stream_file:
size = int(self.stream_file['fileSize'])
else:
size = 0 # deleted files don't get a fileSize apparently
sys.stdout.write('\r%s --> %s (%i MB)\n' % (file['depotFile'], relPath, size/1024/1024))
sys.stdout.flush()
(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 sometimes contains "target\n";
# if it does, remove the newline
data = ''.join(contents)
if not data:
# Some version of p4 allowed creating a symlink that pointed
# to nothing. This causes p4 errors when checking out such
# a change, and errors here too. Work around it by ignoring
# the bad symlink; hopefully a future change fixes it.
print("\nIgnoring empty symlink in %s" % file['depotFile'])
return
elif data[-1] == '\n':
contents = [data[:-1]]
else:
contents = [data]
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.
#
# On windows, the newlines will always be mangled by print, so put
# them back too. This is not needed to the cygwin windows version,
# just the native "NT" type.
#
try:
text = p4_read_pipe(['print', '-q', '-o', '-', '%s@%s' % (file['depotFile'], file['change'])])
except Exception as e:
if 'Translation of file content failed' in str(e):
type_base = 'binary'
else:
raise e
else:
if p4_version_string().find('/NT') >= 0:
text = text.replace('\r\n', '\n')
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
# 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 ]
if self.largeFileSystem:
(git_mode, contents) = self.largeFileSystem.processContent(git_mode, relPath, contents)
self.writeToGitStream(git_mode, relPath, contents)
def streamOneP4Deletion(self, file):
relPath = self.stripRepoPath(file['path'], self.branchPrefixes)
relPath = self.encodeWithUTF8(relPath)
if verbose:
sys.stdout.write("delete %s\n" % relPath)
sys.stdout.flush()
self.gitStream.write("D %s\n" % relPath)
if self.largeFileSystem and self.largeFileSystem.isLargeFile(relPath):
self.largeFileSystem.removeLargeFile(relPath)
# handle another chunk of streaming data
def streamP4FilesCb(self, marshalled):
# catch p4 errors and complain
err = None
if "code" in marshalled:
if marshalled["code"] == "error":
if "data" in marshalled:
err = marshalled["data"].rstrip()
if not err and 'fileSize' in self.stream_file:
required_bytes = int((4 * int(self.stream_file["fileSize"])) - calcDiskFree())
if required_bytes > 0:
err = 'Not enough space left on %s! Free at least %i MB.' % (
os.getcwd(), required_bytes/1024/1024
)
if err:
f = None
if self.stream_have_file_info:
if "depotFile" in self.stream_file:
f = self.stream_file["depotFile"]
# force a failure in fast-import, else an empty
# commit will be made
self.gitStream.write("\n")
self.gitStream.write("die-now\n")
self.gitStream.close()
# ignore errors, but make sure it exits first
self.importProcess.wait()
if f:
die("Error from p4 print for %s: %s" % (f, err))
else:
die("Error from p4 print: %s" % err)
if 'depotFile' in marshalled 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':
if 'streamContentSize' not in self.stream_file:
self.stream_file['streamContentSize'] = 0
self.stream_file['streamContentSize'] += len(marshalled['data'])
self.stream_contents.append(marshalled['data'])
else:
self.stream_file[k] = marshalled[k]
if (verbose and
'streamContentSize' in self.stream_file and
'fileSize' in self.stream_file and
'depotFile' in self.stream_file):
size = int(self.stream_file["fileSize"])
if size > 0:
progress = 100*self.stream_file['streamContentSize']/size
sys.stdout.write('\r%s %d%% (%i MB)' % (self.stream_file['depotFile'], progress, int(size/1024/1024)))
sys.stdout.flush()
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:
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 = []
for f in filesToRead:
if 'shelved_cl' in f:
# Handle shelved CLs using the "p4 print file@=N" syntax to print
# the contents
fileArg = '%s@=%d' % (f['path'], f['shelved_cl'])
else:
fileArg = '%s#%s' % (f['path'], f['rev'])
fileArgs.append(fileArg)
p4CmdList(["-x", "-", "print"],
stdin=fileArgs,
cb=streamP4FilesCbSelf)
# do the last chunk
if 'depotFile' in self.stream_file:
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 streamTag(self, gitStream, labelName, labelDetails, commit, epoch):
""" Stream a p4 tag.
commit is either a git commit, or a fast-import mark, ":<p4commit>"
"""
if verbose:
print("writing tag %s for commit %s" % (labelName, commit))
gitStream.write("tag %s\n" % labelName)
gitStream.write("from %s\n" % commit)
if 'Owner' in labelDetails:
owner = labelDetails["Owner"]
else:
owner = None
# 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)
gitStream.write("tagger %s\n" % tagger)
print("labelDetails=",labelDetails)
if 'Description' in labelDetails:
description = labelDetails['Description']
else:
description = 'Label from git p4'
gitStream.write("data %d\n" % len(description))
gitStream.write(description)
gitStream.write("\n")
def inClientSpec(self, path):
if not self.clientSpecDirs:
return True
inClientSpec = self.clientSpecDirs.map_in_client(path)
if not inClientSpec and self.verbose:
print('Ignoring file outside of client spec: {0}'.format(path))
return inClientSpec
def hasBranchPrefix(self, path):
if not self.branchPrefixes:
return True
hasPrefix = [p for p in self.branchPrefixes
if p4PathStartsWith(path, p)]
if not hasPrefix and self.verbose:
print('Ignoring file outside of prefix: {0}'.format(path))
return hasPrefix
def commit(self, details, files, branch, parent = "", allow_empty=False):
epoch = details["time"]
author = details["user"]
jobs = self.extractJobsFromCommit(details)
if self.verbose:
print('commit into {0}'.format(branch))
if self.clientSpecDirs:
self.clientSpecDirs.update_client_spec_path_cache(files)
files = [f for f in files
if self.inClientSpec(f['path']) and self.hasBranchPrefix(f['path'])]
if gitConfigBool('git-p4.keepEmptyCommits'):
allow_empty = True
if not files and not allow_empty:
print('Ignoring revision {0} as it would produce an empty commit.'
.format(details['change']))
return
self.gitStream.write("commit %s\n" % branch)
self.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"])
if len(jobs) > 0:
self.gitStream.write("\nJobs: %s" % (' '.join(jobs)))
if not self.suppress_meta_comment:
self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s" %
(','.join(self.branchPrefixes), details["change"]))
if len(details['options']) > 0:
self.gitStream.write(": options = %s" % details['options'])
self.gitStream.write("]\n")
self.gitStream.write("EOT\n\n")
if len(parent) > 0:
if self.verbose:
print("parent %s" % parent)
self.gitStream.write("from %s\n" % parent)
self.streamP4Files(files)
self.gitStream.write("\n")
change = int(details["change"])
if change in self.labels:
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 self.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.streamTag(self.gitStream, 'tag_%s' % labelDetails['label'], labelDetails, branch, epoch)
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))
# Build a dictionary of changelists and labels, for "detect-labels" option.
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())
# Import p4 labels as git tags. A direct mapping does not
# exist, so assume that if all the files are at the same revision
# then we can use that, or it's something more complicated we should
# just ignore.
def importP4Labels(self, stream, p4Labels):
if verbose:
print("import p4 labels: " + ' '.join(p4Labels))
ignoredP4Labels = gitConfigList("git-p4.ignoredP4Labels")
validLabelRegexp = gitConfig("git-p4.labelImportRegexp")
if len(validLabelRegexp) == 0:
validLabelRegexp = defaultLabelRegexp
m = re.compile(validLabelRegexp)
for name in p4Labels:
commitFound = False
if not m.match(name):
if verbose:
print("label %s does not match regexp %s" % (name,validLabelRegexp))
continue
if name in ignoredP4Labels:
continue
labelDetails = p4CmdList(['label', "-o", name])[0]
# get the most recent changelist for each file in this label
change = p4Cmd(["changes", "-m", "1"] + ["%s...@%s" % (p, name)
for p in self.depotPaths])
if 'change' in change:
# find the corresponding git commit; take the oldest commit
changelist = int(change['change'])
if changelist in self.committedChanges:
gitCommit = ":%d" % changelist # use a fast-import mark
commitFound = True
else:
gitCommit = read_pipe(["git", "rev-list", "--max-count=1",
"--reverse", ":/\[git-p4:.*change = %d\]" % changelist], ignore_error=True)
if len(gitCommit) == 0:
print("importing label %s: could not find git commit for changelist %d" % (name, changelist))
else:
commitFound = True
gitCommit = gitCommit.strip()
if commitFound:
# Convert from p4 time format
try:
tmwhen = time.strptime(labelDetails['Update'], "%Y/%m/%d %H:%M:%S")
except ValueError:
print("Could not convert label time %s" % labelDetails['Update'])
tmwhen = 1
when = int(time.mktime(tmwhen))
self.streamTag(stream, name, labelDetails, gitCommit, when)
if verbose:
print("p4 label %s mapped to git commit %s" % (name, gitCommit))
else:
if verbose:
print("Label %s has no changelists - possibly deleted?" % name)
if not commitFound:
# We can't import this label; don't try again as it will get very
# expensive repeatedly fetching all the files for labels that will
# never be imported. If the label is moved in the future, the
# ignore will need to be removed manually.
system(["git", "config", "--add", "git-p4.ignoredP4Labels", name])
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 "View%s" % viewIdx in details:
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 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 = ('options' in d
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:
if next == latestCommit:
die("Infinite loop while looking in ref %s for change %s. Check your branch mappings" % (ref, change))
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, self.changes_block_size)
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, origin_revision=0):
cnt = 1
for change in changes:
description = p4_describe(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 + "/"
self.branchPrefixes = [ branchPrefix ]
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 = "%s/%d" % (self.tempBranchLocation, change)
if self.verbose:
print("Creating temporary branch: " + tempBranch)
self.commit(description, filesForCommit, tempBranch)
self.tempBranches.append(tempBranch)
self.checkpoint()
blob = self.searchParent(parent, branch, tempBranch)
if blob:
self.commit(description, filesForCommit, branch, blob)
else:
if self.verbose:
print("Parent of %s not found. Committing into head of %s" % (branch, parent))
self.commit(description, filesForCommit, branch, parent)
else:
files = self.extractFilesFromCommit(description)
self.commit(description, files, self.branch,
self.initialParent)
# only needed once, to connect to the previous commit
self.initialParent = ""
except IOError:
print(self.gitError.read())
sys.exit(1)
def sync_origin_only(self):
if self.syncWithOrigin:
self.hasOrigin = originP4BranchesExist()
if self.hasOrigin:
if not self.silent:
print('Syncing with origin first, using "git fetch origin"')
system("git fetch origin")
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 = p4_describe(newestRevision)
details["time"] = res["time"]
self.updateOptionDict(details)
try:
self.commit(details, self.extractFilesFromCommit(details), self.branch)
except IOError:
print("IO error with git fast-import. Is your git version recent enough?")
print(self.gitError.read())
def openStreams(self):
self.importProcess = subprocess.Popen(["git", "fast-import"],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE);
self.gitOutput = self.importProcess.stdout
self.gitStream = self.importProcess.stdin
self.gitError = self.importProcess.stderr
def closeStreams(self):
self.gitStream.close()
if self.importProcess.wait() != 0:
die("fast-import failed: %s" % self.gitError.read())
self.gitOutput.close()
self.gitError.close()
def run(self, args):
if self.importIntoRemotes:
self.refPrefix = "refs/remotes/p4/"
else:
self.refPrefix = "refs/heads/p4/"
self.sync_origin_only()
branch_arg_given = bool(self.branch)
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")
# 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 gitConfigBool("git-p4.useclientspec"):
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)
# branches holds mapping from branch name to sha1
branches = p4BranchesInGit(self.importIntoRemotes)
# restrict to just this one, disabling detect-branches
if branch_arg_given:
short = self.branch.split("/")[-1]
if short in branches:
self.p4BranchesInGit = [ short ]
else:
self.p4BranchesInGit = branches.keys()
if len(self.p4BranchesInGit) > 1:
if not self.silent:
print("Importing from/into multiple branches")
self.detectBranches = True
for branch in branches.keys():
self.initialParents[self.refPrefix + branch] = \
branches[branch]
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 ('depot-paths' in settings
and 'change' in settings):
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.silent and not self.detectBranches:
print("Performing incremental import into %s git branch" % self.branch)
# accept multiple ref name abbreviations:
# refs/foo/bar/branch -> use it exactly
# p4/branch -> prepend refs/remotes/ or refs/heads/
# branch -> prepend refs/remotes/p4/ or refs/heads/p4/
if not self.branch.startswith("refs/"):
if self.importIntoRemotes:
prepend = "refs/remotes/"
else:
prepend = "refs/heads/"
if not self.branch.startswith("p4/"):
prepend += "p4/"
self.branch = prepend + 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
# --detect-branches may change this for each branch
self.branchPrefixes = self.depotPaths
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.openStreams()
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 p4 branches
if len(args) == 0:
if not self.p4BranchesInGit:
die("No remote p4 branches. Perhaps you never did \"git p4 clone\" in here.")
# The default branch is master, unless --branch is used to
# specify something else. Make sure it exists, or complain
# nicely about how to use --branch.
if not self.detectBranches:
if not branch_exists(self.branch):
if branch_arg_given:
die("Error: branch %s does not exist." % self.branch)
else:
die("Error: no branch %s; perhaps specify one with --branch." %
self.branch)
if self.verbose:
print("Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
self.changeRange))
changes = p4ChangesForPaths(self.depotPaths, self.changeRange, self.changes_block_size)
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!")
else:
if not self.silent and not self.detectBranches:
print("Import destination: %s" % self.branch)
self.updatedBranches = set()
if not self.detectBranches:
if args:
# start a new branch
self.initialParent = ""
else:
# build on a previous revision
self.initialParent = parseRevision(self.branch)
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")
if gitConfigBool("git-p4.importLabels"):
self.importLabels = True
if self.importLabels:
p4Labels = getP4Labels(self.depotPaths)
gitTags = getGitTags()
missingP4Labels = p4Labels - gitTags
self.importP4Labels(self.gitStream, missingP4Labels)
self.closeStreams()
# 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))
# Create a symbolic ref p4/HEAD pointing to p4/<branch> to allow
# a convenient shortcut refname "p4".
if self.importIntoRemotes:
head_ref = self.refPrefix + "HEAD"
if not gitBranchExists(head_ref) and gitBranchExists(self.branch):
system(["git", "symbolic-ref", head_ref, self.branch])
return True
class P4Rebase(Command):
def __init__(self):
Command.__init__(self)
self.options = [
optparse.make_option("--import-labels", dest="importLabels", action="store_true"),
]
self.importLabels = False
self.description = ("Fetches the latest revision from perforce and "
+ "rebases the current work (branch) against it")
def run(self, args):
sync = P4Sync()
sync.importLabels = self.importLabels
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 uncommitted 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("--bare", dest="cloneBare",
action="store_true", default=False),
]
self.cloneDestination = None
self.needsGit = False
self.cloneBare = False
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]
for p in depotPaths:
if not p.startswith("//"):
sys.stderr.write('Depot paths must start with "//": %s\n' % p)
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")
retcode = subprocess.call(init_cmd)
if retcode:
raise CalledProcessError(retcode, init_cmd)
if not P4Sync.run(self, depotPaths):
return False
# create a master branch and check out a work tree
if gitBranchExists(self.branch):
system([ "git", "branch", "master", self.branch ])
if not self.cloneBare:
system([ "git", "checkout", "-f" ])
else:
print('Not checking out any branch, use ' \
'"git checkout -q -b master <branch>"')
# 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 P4Unshelve(Command):
def __init__(self):
Command.__init__(self)
self.options = []
self.origin = "HEAD"
self.description = "Unshelve a P4 changelist into a git commit"
self.usage = "usage: %prog [options] changelist"
self.options += [
optparse.make_option("--origin", dest="origin",
help="Use this base revision instead of the default (%s)" % self.origin),
]
self.verbose = False
self.noCommit = False
self.destbranch = "refs/remotes/p4-unshelved"
def renameBranch(self, branch_name):
""" Rename the existing branch to branch_name.N
"""
found = True
for i in range(0,1000):
backup_branch_name = "{0}.{1}".format(branch_name, i)
if not gitBranchExists(backup_branch_name):
gitUpdateRef(backup_branch_name, branch_name) # copy ref to backup
gitDeleteRef(branch_name)
found = True
print("renamed old unshelve branch to {0}".format(backup_branch_name))
break
if not found:
sys.exit("gave up trying to rename existing branch {0}".format(sync.branch))
def findLastP4Revision(self, starting_point):
""" Look back from starting_point for the first commit created by git-p4
to find the P4 commit we are based on, and the depot-paths.
"""
for parent in (range(65535)):
log = extractLogMessageFromGitCommit("{0}^{1}".format(starting_point, parent))
settings = extractSettingsGitLog(log)
if 'change' in settings:
return settings
sys.exit("could not find git-p4 commits in {0}".format(self.origin))
def createShelveParent(self, change, branch_name, sync, origin):
""" Create a commit matching the parent of the shelved changelist 'change'
"""
parent_description = p4_describe(change, shelved=True)
parent_description['desc'] = 'parent for shelved changelist {}\n'.format(change)
files = sync.extractFilesFromCommit(parent_description, shelved=False, shelved_cl=change)
parent_files = []
for f in files:
# if it was added in the shelved changelist, it won't exist in the parent
if f['action'] in self.add_actions:
continue
# if it was deleted in the shelved changelist it must not be deleted
# in the parent - we might even need to create it if the origin branch
# does not have it
if f['action'] in self.delete_actions:
f['action'] = 'add'
parent_files.append(f)
sync.commit(parent_description, parent_files, branch_name,
parent=origin, allow_empty=True)
print("created parent commit for {0} based on {1} in {2}".format(
change, self.origin, branch_name))
def run(self, args):
if len(args) != 1:
return False
if not gitBranchExists(self.origin):
sys.exit("origin branch {0} does not exist".format(self.origin))
sync = P4Sync()
changes = args
# only one change at a time
change = changes[0]
# if the target branch already exists, rename it
branch_name = "{0}/{1}".format(self.destbranch, change)
if gitBranchExists(branch_name):
self.renameBranch(branch_name)
sync.branch = branch_name
sync.verbose = self.verbose
sync.suppress_meta_comment = True
settings = self.findLastP4Revision(self.origin)
sync.depotPaths = settings['depot-paths']
sync.branchPrefixes = sync.depotPaths
sync.openStreams()
sync.loadUserMapFromCache()
sync.silent = True
# create a commit for the parent of the shelved changelist
self.createShelveParent(change, branch_name, sync, self.origin)
# create the commit for the shelved changelist itself
description = p4_describe(change, True)
files = sync.extractFilesFromCommit(description, True, change)
sync.commit(description, files, branch_name, "")
sync.closeStreams()
print("unshelved changelist {0} into {1}".format(change, branch_name))
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,
"unshelve" : P4Unshelve,
}
def main():
if len(sys.argv[1:]) == 0:
printUsage(commands.keys())
sys.exit(2)
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:]
options.append(optparse.make_option("--verbose", "-v", dest="verbose", action="store_true"))
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):
# "rev-parse --git-dir" without arguments will try $PWD/.git
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)
# so git commands invoked from the P4 workspace will succeed
os.environ["GIT_DIR"] = cmd.gitdir
if not cmd.run(args):
parser.print_help()
sys.exit(2)
if __name__ == '__main__':
main()
