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authorShawn O. Pearce <spearce@spearce.org>2007-06-22 23:08:36 (GMT)
committerShawn O. Pearce <spearce@spearce.org>2007-06-22 23:16:22 (GMT)
commit610f043bb378d12f399f4e5692fb874e0a043b23 (patch)
treed05698d302bb536f53e6f0273983cec9d5221b1a /contrib/fast-import
parent92d7c8e37b96244f2c55f5c66ec52c6325acca1d (diff)
parent9ceab36375dfd4088b265033e1de9225b3527cab (diff)
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Import branch 'git-p4' of git://repo.or.cz/fast-export
Simon has asked that the git.git project include the git-p4 project as at least a contrib/fast-import within git.git. I think it makes a lot of sense, as git-p4 nicely complements the only other in-tree fast-import user: import-tars.perl. git-p4 is offered under the MIT license by its authors.
Diffstat (limited to 'contrib/fast-import')
-rwxr-xr-xcontrib/fast-import/git-p41577
-rw-r--r--contrib/fast-import/git-p4.bat1
-rw-r--r--contrib/fast-import/git-p4.txt159
3 files changed, 1737 insertions, 0 deletions
diff --git a/contrib/fast-import/git-p4 b/contrib/fast-import/git-p4
new file mode 100755
index 0000000..54a05eb
--- /dev/null
+++ b/contrib/fast-import/git-p4
@@ -0,0 +1,1577 @@
+#!/usr/bin/env python
+#
+# git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
+#
+# Author: Simon Hausmann <simon@lst.de>
+# Copyright: 2007 Simon Hausmann <simon@lst.de>
+# 2007 Trolltech ASA
+# License: MIT <http://www.opensource.org/licenses/mit-license.php>
+#
+
+import optparse, sys, os, marshal, popen2, subprocess, shelve
+import tempfile, getopt, sha, os.path, time, platform
+import re
+
+from sets import Set;
+
+verbose = False
+
+def die(msg):
+ if verbose:
+ raise Exception(msg)
+ else:
+ sys.stderr.write(msg + "\n")
+ sys.exit(1)
+
+def write_pipe(c, str):
+ if verbose:
+ sys.stderr.write('Writing pipe: %s\n' % c)
+
+ pipe = os.popen(c, 'w')
+ val = pipe.write(str)
+ if pipe.close():
+ die('Command failed: %s' % c)
+
+ return val
+
+def read_pipe(c, ignore_error=False):
+ if verbose:
+ sys.stderr.write('Reading pipe: %s\n' % c)
+
+ pipe = os.popen(c, 'rb')
+ val = pipe.read()
+ if pipe.close() and not ignore_error:
+ die('Command failed: %s' % c)
+
+ return val
+
+
+def read_pipe_lines(c):
+ if verbose:
+ sys.stderr.write('Reading pipe: %s\n' % c)
+ ## todo: check return status
+ pipe = os.popen(c, 'rb')
+ val = pipe.readlines()
+ if pipe.close():
+ die('Command failed: %s' % c)
+
+ return val
+
+def system(cmd):
+ if verbose:
+ sys.stderr.write("executing %s\n" % cmd)
+ if os.system(cmd) != 0:
+ die("command failed: %s" % cmd)
+
+def p4CmdList(cmd):
+ cmd = "p4 -G %s" % cmd
+ if verbose:
+ sys.stderr.write("Opening pipe: %s\n" % cmd)
+ pipe = os.popen(cmd, "rb")
+
+ result = []
+ try:
+ while True:
+ entry = marshal.load(pipe)
+ result.append(entry)
+ except EOFError:
+ pass
+ exitCode = pipe.close()
+ if exitCode != None:
+ 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 += "/"
+ output = p4Cmd("where %s..." % depotPath)
+ if output["code"] == "error":
+ return ""
+ clientPath = ""
+ if "path" in output:
+ clientPath = output.get("path")
+ elif "data" in output:
+ data = output.get("data")
+ lastSpace = data.rfind(" ")
+ clientPath = data[lastSpace + 1:]
+
+ if clientPath.endswith("..."):
+ clientPath = clientPath[:-3]
+ return clientPath
+
+def currentGitBranch():
+ return read_pipe("git name-rev HEAD").split(" ")[1].strip()
+
+def isValidGitDir(path):
+ if (os.path.exists(path + "/HEAD")
+ and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
+ return True;
+ return False
+
+def parseRevision(ref):
+ return read_pipe("git rev-parse %s" % ref).strip()
+
+def extractLogMessageFromGitCommit(commit):
+ logMessage = ""
+
+ ## fixme: title is first line of commit, not 1st paragraph.
+ foundTitle = False
+ for log in read_pipe_lines("git cat-file commit %s" % commit):
+ if not foundTitle:
+ if len(log) == 1:
+ foundTitle = True
+ continue
+
+ logMessage += log
+ return logMessage
+
+def extractSettingsGitLog(log):
+ values = {}
+ for line in log.split("\n"):
+ line = line.strip()
+ m = re.search (r"^ *\[git-p4: (.*)\]$", line)
+ if not m:
+ continue
+
+ assignments = m.group(1).split (':')
+ for a in assignments:
+ vals = a.split ('=')
+ key = vals[0].strip()
+ val = ('='.join (vals[1:])).strip()
+ if val.endswith ('\"') and val.startswith('"'):
+ val = val[1:-1]
+
+ values[key] = val
+
+ paths = values.get("depot-paths")
+ if not paths:
+ paths = values.get("depot-path")
+ if paths:
+ values['depot-paths'] = paths.split(',')
+ return values
+
+def gitBranchExists(branch):
+ proc = subprocess.Popen(["git", "rev-parse", branch],
+ stderr=subprocess.PIPE, stdout=subprocess.PIPE);
+ return proc.wait() == 0;
+
+def gitConfig(key):
+ return read_pipe("git config %s" % key, ignore_error=True).strip()
+
+def findUpstreamBranchPoint(head = "HEAD"):
+ settings = None
+ branchPoint = ""
+ parent = 0
+ while parent < 65535:
+ commit = head + "~%s" % parent
+ log = extractLogMessageFromGitCommit(commit)
+ settings = extractSettingsGitLog(log)
+ if not settings.has_key("depot-paths"):
+ parent = parent + 1
+ continue
+
+ names = read_pipe_lines("git name-rev \"--refs=refs/remotes/p4/*\" \"%s\"" % commit)
+ if len(names) <= 0:
+ continue
+
+ # strip away the beginning of 'HEAD~42 refs/remotes/p4/foo'
+ branchPoint = names[0].strip()[len(commit) + 1:]
+ break
+
+ return [branchPoint, settings]
+
+class Command:
+ def __init__(self):
+ self.usage = "usage: %prog [options]"
+ self.needsGit = True
+
+class P4Debug(Command):
+ def __init__(self):
+ Command.__init__(self)
+ self.options = [
+ optparse.make_option("--verbose", dest="verbose", action="store_true",
+ default=False),
+ ]
+ self.description = "A tool to debug the output of p4 -G."
+ self.needsGit = False
+ self.verbose = False
+
+ def run(self, args):
+ j = 0
+ for output in p4CmdList(" ".join(args)):
+ print 'Element: %d' % j
+ j += 1
+ print output
+ return True
+
+class P4RollBack(Command):
+ def __init__(self):
+ Command.__init__(self)
+ self.options = [
+ optparse.make_option("--verbose", dest="verbose", action="store_true"),
+ optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
+ ]
+ self.description = "A tool to debug the multi-branch import. Don't use :)"
+ self.verbose = False
+ self.rollbackLocalBranches = False
+
+ def run(self, args):
+ if len(args) != 1:
+ return False
+ maxChange = int(args[0])
+
+ if "p4ExitCode" in p4Cmd("changes -m 1"):
+ die("Problems executing p4");
+
+ if self.rollbackLocalBranches:
+ refPrefix = "refs/heads/"
+ lines = read_pipe_lines("git rev-parse --symbolic --branches")
+ else:
+ refPrefix = "refs/remotes/"
+ lines = read_pipe_lines("git rev-parse --symbolic --remotes")
+
+ for line in lines:
+ if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
+ line = line.strip()
+ ref = refPrefix + line
+ log = extractLogMessageFromGitCommit(ref)
+ settings = extractSettingsGitLog(log)
+
+ depotPaths = settings['depot-paths']
+ change = settings['change']
+
+ changed = False
+
+ if len(p4Cmd("changes -m 1 " + ' '.join (['%s...@%s' % (p, maxChange)
+ for p in depotPaths]))) == 0:
+ print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
+ system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
+ continue
+
+ while change and int(change) > maxChange:
+ changed = True
+ if self.verbose:
+ print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
+ system("git update-ref %s \"%s^\"" % (ref, ref))
+ log = extractLogMessageFromGitCommit(ref)
+ settings = extractSettingsGitLog(log)
+
+
+ depotPaths = settings['depot-paths']
+ change = settings['change']
+
+ if changed:
+ print "%s rewound to %s" % (ref, change)
+
+ return True
+
+class P4Submit(Command):
+ def __init__(self):
+ Command.__init__(self)
+ self.options = [
+ optparse.make_option("--continue", action="store_false", dest="firstTime"),
+ optparse.make_option("--verbose", dest="verbose", action="store_true"),
+ optparse.make_option("--origin", dest="origin"),
+ optparse.make_option("--reset", action="store_true", dest="reset"),
+ optparse.make_option("--log-substitutions", dest="substFile"),
+ optparse.make_option("--dry-run", action="store_true"),
+ optparse.make_option("--direct", dest="directSubmit", action="store_true"),
+ optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
+ ]
+ self.description = "Submit changes from git to the perforce depot."
+ self.usage += " [name of git branch to submit into perforce depot]"
+ self.firstTime = True
+ self.reset = False
+ self.interactive = True
+ self.dryRun = False
+ self.substFile = ""
+ self.firstTime = True
+ self.origin = ""
+ self.directSubmit = False
+ self.trustMeLikeAFool = False
+ self.verbose = False
+ self.isWindows = (platform.system() == "Windows")
+
+ self.logSubstitutions = {}
+ self.logSubstitutions["<enter description here>"] = "%log%"
+ self.logSubstitutions["\tDetails:"] = "\tDetails: %log%"
+
+ def check(self):
+ if len(p4CmdList("opened ...")) > 0:
+ die("You have files opened with perforce! Close them before starting the sync.")
+
+ def start(self):
+ if len(self.config) > 0 and not self.reset:
+ die("Cannot start sync. Previous sync config found at %s\n"
+ "If you want to start submitting again from scratch "
+ "maybe you want to call git-p4 submit --reset" % self.configFile)
+
+ commits = []
+ if self.directSubmit:
+ commits.append("0")
+ else:
+ for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
+ commits.append(line.strip())
+ commits.reverse()
+
+ self.config["commits"] = commits
+
+ def prepareLogMessage(self, template, message):
+ result = ""
+
+ for line in template.split("\n"):
+ if line.startswith("#"):
+ result += line + "\n"
+ continue
+
+ substituted = False
+ for key in self.logSubstitutions.keys():
+ if line.find(key) != -1:
+ value = self.logSubstitutions[key]
+ value = value.replace("%log%", message)
+ if value != "@remove@":
+ result += line.replace(key, value) + "\n"
+ substituted = True
+ break
+
+ if not substituted:
+ result += line + "\n"
+
+ return result
+
+ def applyCommit(self, id):
+ if self.directSubmit:
+ print "Applying local change in working directory/index"
+ diff = self.diffStatus
+ else:
+ print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
+ diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
+ filesToAdd = set()
+ filesToDelete = set()
+ editedFiles = set()
+ for line in diff:
+ modifier = line[0]
+ path = line[1:].strip()
+ if modifier == "M":
+ system("p4 edit \"%s\"" % path)
+ editedFiles.add(path)
+ elif modifier == "A":
+ filesToAdd.add(path)
+ if path in filesToDelete:
+ filesToDelete.remove(path)
+ elif modifier == "D":
+ filesToDelete.add(path)
+ if path in filesToAdd:
+ filesToAdd.remove(path)
+ else:
+ die("unknown modifier %s for %s" % (modifier, path))
+
+ if self.directSubmit:
+ diffcmd = "cat \"%s\"" % self.diffFile
+ else:
+ diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
+ patchcmd = diffcmd + " | git apply "
+ tryPatchCmd = patchcmd + "--check -"
+ applyPatchCmd = patchcmd + "--check --apply -"
+
+ if os.system(tryPatchCmd) != 0:
+ print "Unfortunately applying the change failed!"
+ print "What do you want to do?"
+ response = "x"
+ while response != "s" and response != "a" and response != "w":
+ response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
+ "and with .rej files / [w]rite the patch to a file (patch.txt) ")
+ if response == "s":
+ print "Skipping! Good luck with the next patches..."
+ return
+ elif response == "a":
+ os.system(applyPatchCmd)
+ if len(filesToAdd) > 0:
+ print "You may also want to call p4 add on the following files:"
+ print " ".join(filesToAdd)
+ if len(filesToDelete):
+ print "The following files should be scheduled for deletion with p4 delete:"
+ print " ".join(filesToDelete)
+ die("Please resolve and submit the conflict manually and "
+ + "continue afterwards with git-p4 submit --continue")
+ elif response == "w":
+ system(diffcmd + " > patch.txt")
+ print "Patch saved to patch.txt in %s !" % self.clientPath
+ die("Please resolve and submit the conflict manually and "
+ "continue afterwards with git-p4 submit --continue")
+
+ system(applyPatchCmd)
+
+ for f in filesToAdd:
+ system("p4 add \"%s\"" % f)
+ for f in filesToDelete:
+ system("p4 revert \"%s\"" % f)
+ system("p4 delete \"%s\"" % f)
+
+ logMessage = ""
+ if not self.directSubmit:
+ logMessage = extractLogMessageFromGitCommit(id)
+ logMessage = logMessage.replace("\n", "\n\t")
+ if self.isWindows:
+ logMessage = logMessage.replace("\n", "\r\n")
+ logMessage = logMessage.strip()
+
+ template = read_pipe("p4 change -o")
+
+ if self.interactive:
+ submitTemplate = self.prepareLogMessage(template, logMessage)
+ diff = read_pipe("p4 diff -du ...")
+
+ for newFile in filesToAdd:
+ diff += "==== new file ====\n"
+ diff += "--- /dev/null\n"
+ diff += "+++ %s\n" % newFile
+ f = open(newFile, "r")
+ for line in f.readlines():
+ diff += "+" + line
+ f.close()
+
+ separatorLine = "######## everything below this line is just the diff #######"
+ if platform.system() == "Windows":
+ separatorLine += "\r"
+ separatorLine += "\n"
+
+ response = "e"
+ if self.trustMeLikeAFool:
+ response = "y"
+
+ firstIteration = True
+ while response == "e":
+ if not firstIteration:
+ response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
+ firstIteration = False
+ if response == "e":
+ [handle, fileName] = tempfile.mkstemp()
+ tmpFile = os.fdopen(handle, "w+")
+ tmpFile.write(submitTemplate + separatorLine + diff)
+ tmpFile.close()
+ defaultEditor = "vi"
+ if platform.system() == "Windows":
+ defaultEditor = "notepad"
+ editor = os.environ.get("EDITOR", defaultEditor);
+ system(editor + " " + fileName)
+ tmpFile = open(fileName, "rb")
+ message = tmpFile.read()
+ tmpFile.close()
+ os.remove(fileName)
+ submitTemplate = message[:message.index(separatorLine)]
+ if self.isWindows:
+ submitTemplate = submitTemplate.replace("\r\n", "\n")
+
+ if response == "y" or response == "yes":
+ if self.dryRun:
+ print submitTemplate
+ raw_input("Press return to continue...")
+ else:
+ if self.directSubmit:
+ print "Submitting to git first"
+ os.chdir(self.oldWorkingDirectory)
+ write_pipe("git commit -a -F -", submitTemplate)
+ os.chdir(self.clientPath)
+
+ write_pipe("p4 submit -i", submitTemplate)
+ elif response == "s":
+ for f in editedFiles:
+ system("p4 revert \"%s\"" % f);
+ for f in filesToAdd:
+ system("p4 revert \"%s\"" % f);
+ system("rm %s" %f)
+ for f in filesToDelete:
+ system("p4 delete \"%s\"" % f);
+ return
+ else:
+ print "Not submitting!"
+ self.interactive = False
+ else:
+ fileName = "submit.txt"
+ file = open(fileName, "w+")
+ file.write(self.prepareLogMessage(template, logMessage))
+ file.close()
+ print ("Perforce submit template written as %s. "
+ + "Please review/edit and then use p4 submit -i < %s to submit directly!"
+ % (fileName, fileName))
+
+ def run(self, args):
+ if len(args) == 0:
+ self.master = currentGitBranch()
+ if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
+ die("Detecting current git branch failed!")
+ elif len(args) == 1:
+ self.master = args[0]
+ else:
+ return False
+
+ [upstream, settings] = findUpstreamBranchPoint()
+ depotPath = settings['depot-paths'][0]
+ if len(self.origin) == 0:
+ self.origin = upstream
+
+ if self.verbose:
+ print "Origin branch is " + self.origin
+
+ if len(depotPath) == 0:
+ print "Internal error: cannot locate perforce depot path from existing branches"
+ sys.exit(128)
+
+ self.clientPath = p4Where(depotPath)
+
+ if len(self.clientPath) == 0:
+ print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
+ sys.exit(128)
+
+ print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
+ self.oldWorkingDirectory = os.getcwd()
+
+ if self.directSubmit:
+ self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
+ if len(self.diffStatus) == 0:
+ print "No changes in working directory to submit."
+ return True
+ patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
+ self.diffFile = self.gitdir + "/p4-git-diff"
+ f = open(self.diffFile, "wb")
+ f.write(patch)
+ f.close();
+
+ os.chdir(self.clientPath)
+ response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
+ if response == "y" or response == "yes":
+ system("p4 sync ...")
+
+ if self.reset:
+ self.firstTime = True
+
+ if len(self.substFile) > 0:
+ for line in open(self.substFile, "r").readlines():
+ tokens = line.strip().split("=")
+ self.logSubstitutions[tokens[0]] = tokens[1]
+
+ self.check()
+ self.configFile = self.gitdir + "/p4-git-sync.cfg"
+ self.config = shelve.open(self.configFile, writeback=True)
+
+ if self.firstTime:
+ self.start()
+
+ commits = self.config.get("commits", [])
+
+ while len(commits) > 0:
+ self.firstTime = False
+ commit = commits[0]
+ commits = commits[1:]
+ self.config["commits"] = commits
+ self.applyCommit(commit)
+ if not self.interactive:
+ break
+
+ self.config.close()
+
+ if self.directSubmit:
+ os.remove(self.diffFile)
+
+ if len(commits) == 0:
+ if self.firstTime:
+ print "No changes found to apply between %s and current HEAD" % self.origin
+ else:
+ print "All changes applied!"
+ os.chdir(self.oldWorkingDirectory)
+ response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
+ if response == "y" or response == "yes":
+ rebase = P4Rebase()
+ rebase.run([])
+ os.remove(self.configFile)
+
+ return True
+
+class P4Sync(Command):
+ def __init__(self):
+ Command.__init__(self)
+ self.options = [
+ optparse.make_option("--branch", dest="branch"),
+ optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
+ optparse.make_option("--changesfile", dest="changesFile"),
+ optparse.make_option("--silent", dest="silent", action="store_true"),
+ optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
+ optparse.make_option("--verbose", dest="verbose", action="store_true"),
+ optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
+ help="Import into refs/heads/ , not refs/remotes"),
+ optparse.make_option("--max-changes", dest="maxChanges"),
+ optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
+ help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
+ ]
+ self.description = """Imports from Perforce into a git repository.\n
+ example:
+ //depot/my/project/ -- to import the current head
+ //depot/my/project/@all -- to import everything
+ //depot/my/project/@1,6 -- to import only from revision 1 to 6
+
+ (a ... is not needed in the path p4 specification, it's added implicitly)"""
+
+ self.usage += " //depot/path[@revRange]"
+ self.silent = False
+ self.createdBranches = Set()
+ self.committedChanges = Set()
+ self.branch = ""
+ self.detectBranches = False
+ self.detectLabels = False
+ self.changesFile = ""
+ self.syncWithOrigin = True
+ self.verbose = False
+ self.importIntoRemotes = True
+ self.maxChanges = ""
+ self.isWindows = (platform.system() == "Windows")
+ self.keepRepoPath = False
+ self.depotPaths = None
+ self.p4BranchesInGit = []
+
+ if gitConfig("git-p4.syncFromOrigin") == "false":
+ self.syncWithOrigin = False
+
+ def extractFilesFromCommit(self, commit):
+ files = []
+ fnum = 0
+ while commit.has_key("depotFile%s" % fnum):
+ path = commit["depotFile%s" % fnum]
+
+ found = [p for p in self.depotPaths
+ if path.startswith (p)]
+ if not found:
+ fnum = fnum + 1
+ continue
+
+ file = {}
+ file["path"] = path
+ file["rev"] = commit["rev%s" % fnum]
+ file["action"] = commit["action%s" % fnum]
+ file["type"] = commit["type%s" % fnum]
+ files.append(file)
+ fnum = fnum + 1
+ return files
+
+ def stripRepoPath(self, path, prefixes):
+ if self.keepRepoPath:
+ prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
+
+ for p in prefixes:
+ if path.startswith(p):
+ path = path[len(p):]
+
+ return path
+
+ def splitFilesIntoBranches(self, commit):
+ branches = {}
+ fnum = 0
+ while commit.has_key("depotFile%s" % fnum):
+ path = commit["depotFile%s" % fnum]
+ found = [p for p in self.depotPaths
+ if path.startswith (p)]
+ if not found:
+ fnum = fnum + 1
+ continue
+
+ file = {}
+ file["path"] = path
+ file["rev"] = commit["rev%s" % fnum]
+ file["action"] = commit["action%s" % fnum]
+ file["type"] = commit["type%s" % fnum]
+ fnum = fnum + 1
+
+ relPath = self.stripRepoPath(path, self.depotPaths)
+
+ for branch in self.knownBranches.keys():
+
+ # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
+ if relPath.startswith(branch + "/"):
+ if branch not in branches:
+ branches[branch] = []
+ branches[branch].append(file)
+ break
+
+ return branches
+
+ ## Should move this out, doesn't use SELF.
+ def readP4Files(self, files):
+ files = [f for f in files
+ if f['action'] != 'delete']
+
+ if not files:
+ return
+
+ # We cannot put all the files on the command line
+ # OS have limitations on the max lenght of arguments
+ # POSIX says it's 4096 bytes, default for Linux seems to be 130 K.
+ # and all OS from the table below seems to be higher than POSIX.
+ # See http://www.in-ulm.de/~mascheck/various/argmax/
+ argmax = min(4000, os.sysconf('SC_ARG_MAX'))
+ chunk = ''
+ filedata = []
+ for i in xrange(len(files)):
+ f = files[i]
+ chunk += '"%s#%s" ' % (f['path'], f['rev'])
+ if len(chunk) > argmax or i == len(files)-1:
+ data = p4CmdList('print %s' % chunk)
+ if "p4ExitCode" in data[0]:
+ die("Problems executing p4. Error: [%d]." % (data[0]['p4ExitCode']));
+ filedata.extend(data)
+ chunk = ''
+
+ j = 0;
+ contents = {}
+ while j < len(filedata):
+ stat = filedata[j]
+ j += 1
+ text = ''
+ while j < len(filedata) and filedata[j]['code'] in ('text',
+ 'binary'):
+ text += filedata[j]['data']
+ j += 1
+
+
+ if not stat.has_key('depotFile'):
+ sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
+ continue
+
+ contents[stat['depotFile']] = text
+
+ for f in files:
+ assert not f.has_key('data')
+ f['data'] = contents[f['path']]
+
+ def commit(self, details, files, branch, branchPrefixes, parent = ""):
+ epoch = details["time"]
+ author = details["user"]
+
+ if self.verbose:
+ print "commit into %s" % branch
+
+ # start with reading files; if that fails, we should not
+ # create a commit.
+ new_files = []
+ for f in files:
+ if [p for p in branchPrefixes if f['path'].startswith(p)]:
+ new_files.append (f)
+ else:
+ sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
+ files = new_files
+ self.readP4Files(files)
+
+
+
+
+ self.gitStream.write("commit %s\n" % branch)
+# gitStream.write("mark :%s\n" % details["change"])
+ self.committedChanges.add(int(details["change"]))
+ committer = ""
+ if author not in self.users:
+ self.getUserMapFromPerforceServer()
+ if author in self.users:
+ committer = "%s %s %s" % (self.users[author], epoch, self.tz)
+ else:
+ committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
+
+ self.gitStream.write("committer %s\n" % committer)
+
+ self.gitStream.write("data <<EOT\n")
+ self.gitStream.write(details["desc"])
+ self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
+ % (','.join (branchPrefixes), details["change"]))
+ if len(details['options']) > 0:
+ self.gitStream.write(": options = %s" % details['options'])
+ self.gitStream.write("]\nEOT\n\n")
+
+ if len(parent) > 0:
+ if self.verbose:
+ print "parent %s" % parent
+ self.gitStream.write("from %s\n" % parent)
+
+ for file in files:
+ if file["type"] == "apple":
+ print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
+ continue
+
+ relPath = self.stripRepoPath(file['path'], branchPrefixes)
+ if file["action"] == "delete":
+ self.gitStream.write("D %s\n" % relPath)
+ else:
+ mode = 644
+ if file["type"].startswith("x"):
+ mode = 755
+
+ data = file['data']
+
+ if self.isWindows and file["type"].endswith("text"):
+ data = data.replace("\r\n", "\n")
+
+ self.gitStream.write("M %d inline %s\n" % (mode, relPath))
+ self.gitStream.write("data %s\n" % len(data))
+ self.gitStream.write(data)
+ self.gitStream.write("\n")
+
+ self.gitStream.write("\n")
+
+ change = int(details["change"])
+
+ if self.labels.has_key(change):
+ label = self.labels[change]
+ labelDetails = label[0]
+ labelRevisions = label[1]
+ if self.verbose:
+ print "Change %s is labelled %s" % (change, labelDetails)
+
+ files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
+ for p in branchPrefixes]))
+
+ if len(files) == len(labelRevisions):
+
+ cleanedFiles = {}
+ for info in files:
+ if info["action"] == "delete":
+ continue
+ cleanedFiles[info["depotFile"]] = info["rev"]
+
+ if cleanedFiles == labelRevisions:
+ self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
+ self.gitStream.write("from %s\n" % branch)
+
+ owner = labelDetails["Owner"]
+ tagger = ""
+ if author in self.users:
+ tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
+ else:
+ tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
+ self.gitStream.write("tagger %s\n" % tagger)
+ self.gitStream.write("data <<EOT\n")
+ self.gitStream.write(labelDetails["Description"])
+ self.gitStream.write("EOT\n\n")
+
+ else:
+ if not self.silent:
+ print ("Tag %s does not match with change %s: files do not match."
+ % (labelDetails["label"], change))
+
+ else:
+ if not self.silent:
+ print ("Tag %s does not match with change %s: file count is different."
+ % (labelDetails["label"], change))
+
+ def getUserCacheFilename(self):
+ return os.environ["HOME"] + "/.gitp4-usercache.txt"
+
+ def getUserMapFromPerforceServer(self):
+ if self.userMapFromPerforceServer:
+ return
+ self.users = {}
+
+ for output in p4CmdList("users"):
+ if not output.has_key("User"):
+ continue
+ self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
+
+
+ s = ''
+ for (key, val) in self.users.items():
+ s += "%s\t%s\n" % (key, val)
+
+ 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()
+
+ def getLabels(self):
+ self.labels = {}
+
+ l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
+ if len(l) > 0 and not self.silent:
+ print "Finding files belonging to labels in %s" % `self.depotPath`
+
+ 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 "
+ + ' '.join (["%s...@%s" % (p, label)
+ for p in self.depotPaths])):
+ revisions[file["depotFile"]] = file["rev"]
+ change = int(file["change"])
+ if change > newestChange:
+ newestChange = change
+
+ self.labels[newestChange] = [output, revisions]
+
+ if self.verbose:
+ print "Label changes: %s" % self.labels.keys()
+
+ def guessProjectName(self):
+ for p in self.depotPaths:
+ if p.endswith("/"):
+ p = p[:-1]
+ p = p[p.strip().rfind("/") + 1:]
+ if not p.endswith("/"):
+ p += "/"
+ return p
+
+ def getBranchMapping(self):
+ lostAndFoundBranches = set()
+
+ for info in p4CmdList("branches"):
+ details = p4Cmd("branch -o %s" % info["branch"])
+ viewIdx = 0
+ while details.has_key("View%s" % viewIdx):
+ paths = details["View%s" % viewIdx].split(" ")
+ viewIdx = viewIdx + 1
+ # require standard //depot/foo/... //depot/bar/... mapping
+ if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
+ continue
+ source = paths[0]
+ destination = paths[1]
+ ## HACK
+ if source.startswith(self.depotPaths[0]) and destination.startswith(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)
+
+
+ for branch in lostAndFoundBranches:
+ self.knownBranches[branch] = branch
+
+ def listExistingP4GitBranches(self):
+ self.p4BranchesInGit = []
+
+ cmdline = "git rev-parse --symbolic "
+ if self.importIntoRemotes:
+ cmdline += " --remotes"
+ else:
+ cmdline += " --branches"
+
+ for line in read_pipe_lines(cmdline):
+ line = line.strip()
+
+ ## only import to p4/
+ if not line.startswith('p4/') or line == "p4/HEAD":
+ continue
+ branch = line
+
+ # strip off p4
+ branch = re.sub ("^p4/", "", line)
+
+ self.p4BranchesInGit.append(branch)
+ self.initialParents[self.refPrefix + branch] = parseRevision(line)
+
+ def createOrUpdateBranchesFromOrigin(self):
+ if not self.silent:
+ print ("Creating/updating branch(es) in %s based on origin branch(es)"
+ % self.refPrefix)
+
+ 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 = self.refPrefix + headName
+ originHead = line
+
+ original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
+ if (not original.has_key('depot-paths')
+ or not original.has_key('change')):
+ continue
+
+ update = False
+ if not gitBranchExists(remoteHead):
+ if self.verbose:
+ print "creating %s" % remoteHead
+ update = True
+ else:
+ settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
+ if settings.has_key('change') > 0:
+ if settings['depot-paths'] == original['depot-paths']:
+ originP4Change = int(original['change'])
+ p4Change = int(settings['change'])
+ if originP4Change > p4Change:
+ print ("%s (%s) is newer than %s (%s). "
+ "Updating p4 branch from origin."
+ % (originHead, originP4Change,
+ remoteHead, p4Change))
+ update = True
+ else:
+ print ("Ignoring: %s was imported from %s while "
+ "%s was imported from %s"
+ % (originHead, ','.join(original['depot-paths']),
+ remoteHead, ','.join(settings['depot-paths'])))
+
+ if update:
+ system("git update-ref %s %s" % (remoteHead, originHead))
+
+ def updateOptionDict(self, d):
+ option_keys = {}
+ if self.keepRepoPath:
+ option_keys['keepRepoPath'] = 1
+
+ d["options"] = ' '.join(sorted(option_keys.keys()))
+
+ def readOptions(self, d):
+ self.keepRepoPath = (d.has_key('options')
+ and ('keepRepoPath' in d['options']))
+
+ def run(self, args):
+ self.depotPaths = []
+ self.changeRange = ""
+ self.initialParent = ""
+ self.previousDepotPaths = []
+
+ # map from branch depot path to parent branch
+ self.knownBranches = {}
+ self.initialParents = {}
+ self.hasOrigin = gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
+ if not self.syncWithOrigin:
+ self.hasOrigin = False
+
+ if self.importIntoRemotes:
+ self.refPrefix = "refs/remotes/p4/"
+ else:
+ self.refPrefix = "refs/heads/p4/"
+
+ if self.syncWithOrigin and self.hasOrigin:
+ if not self.silent:
+ print "Syncing with origin first by calling git fetch origin"
+ system("git fetch origin")
+
+ if len(self.branch) == 0:
+ self.branch = self.refPrefix + "master"
+ if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
+ system("git update-ref %s refs/heads/p4" % self.branch)
+ system("git branch -D p4");
+ # create it /after/ importing, when master exists
+ if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
+ system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
+
+ # TODO: should always look at previous commits,
+ # merge with previous imports, if possible.
+ if args == []:
+ if self.hasOrigin:
+ self.createOrUpdateBranchesFromOrigin()
+ self.listExistingP4GitBranches()
+
+ if len(self.p4BranchesInGit) > 1:
+ if not self.silent:
+ print "Importing from/into multiple branches"
+ self.detectBranches = True
+
+ if self.verbose:
+ print "branches: %s" % self.p4BranchesInGit
+
+ p4Change = 0
+ for branch in self.p4BranchesInGit:
+ logMsg = extractLogMessageFromGitCommit(self.refPrefix + branch)
+
+ settings = extractSettingsGitLog(logMsg)
+
+ self.readOptions(settings)
+ if (settings.has_key('depot-paths')
+ and settings.has_key ('change')):
+ change = int(settings['change']) + 1
+ p4Change = max(p4Change, change)
+
+ depotPaths = sorted(settings['depot-paths'])
+ if self.previousDepotPaths == []:
+ self.previousDepotPaths = depotPaths
+ else:
+ paths = []
+ for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
+ for i in range(0, min(len(cur), len(prev))):
+ if cur[i] <> prev[i]:
+ i = i - 1
+ break
+
+ paths.append (cur[:i + 1])
+
+ self.previousDepotPaths = paths
+
+ if p4Change > 0:
+ self.depotPaths = sorted(self.previousDepotPaths)
+ self.changeRange = "@%s,#head" % p4Change
+ if not self.detectBranches:
+ self.initialParent = parseRevision(self.branch)
+ if not self.silent and not self.detectBranches:
+ print "Performing incremental import into %s git branch" % self.branch
+
+ if not self.branch.startswith("refs/"):
+ self.branch = "refs/heads/" + self.branch
+
+ if len(args) == 0 and self.depotPaths:
+ if not self.silent:
+ print "Depot paths: %s" % ' '.join(self.depotPaths)
+ else:
+ if self.depotPaths and self.depotPaths != args:
+ print ("previous import used depot path %s and now %s was specified. "
+ "This doesn't work!" % (' '.join (self.depotPaths),
+ ' '.join (args)))
+ sys.exit(1)
+
+ self.depotPaths = sorted(args)
+
+ self.revision = ""
+ self.users = {}
+
+ 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:
+ self.revision = self.changeRange
+ self.changeRange = ""
+ p = p[0:atIdx]
+ elif p.find("#") != -1:
+ hashIdx = p.index("#")
+ self.revision = p[hashIdx:]
+ p = p[0:hashIdx]
+ elif self.previousDepotPaths == []:
+ self.revision = "#head"
+
+ p = re.sub ("\.\.\.$", "", p)
+ if not p.endswith("/"):
+ p += "/"
+
+ newPaths.append(p)
+
+ self.depotPaths = newPaths
+
+
+ self.loadUserMapFromCache()
+ self.labels = {}
+ if self.detectLabels:
+ self.getLabels();
+
+ if self.detectBranches:
+ ## FIXME - what's a P4 projectName ?
+ self.projectName = self.guessProjectName()
+
+ if not self.hasOrigin:
+ self.getBranchMapping();
+ if self.verbose:
+ print "p4-git branches: %s" % self.p4BranchesInGit
+ print "initial parents: %s" % self.initialParents
+ for b in self.p4BranchesInGit:
+ if b != "master":
+
+ ## FIXME
+ b = b[len(self.projectName):]
+ self.createdBranches.add(b)
+
+ self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
+
+ importProcess = subprocess.Popen(["git", "fast-import"],
+ stdin=subprocess.PIPE, stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE);
+ self.gitOutput = importProcess.stdout
+ self.gitStream = importProcess.stdin
+ self.gitError = importProcess.stderr
+
+ if self.revision:
+ print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
+
+ details = { "user" : "git perforce import user", "time" : int(time.time()) }
+ details["desc"] = ("Initial import of %s from the state at revision %s"
+ % (' '.join(self.depotPaths), self.revision))
+ details["change"] = self.revision
+ newestRevision = 0
+
+ fileCnt = 0
+ for info in p4CmdList("files "
+ + ' '.join(["%s...%s"
+ % (p, self.revision)
+ for p in self.depotPaths])):
+
+ if info['code'] == 'error':
+ sys.stderr.write("p4 returned an error: %s\n"
+ % info['data'])
+ sys.exit(1)
+
+
+ change = int(info["change"])
+ if change > newestRevision:
+ newestRevision = change
+
+ if info["action"] == "delete":
+ # 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
+ self.updateOptionDict(details)
+ try:
+ self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
+ except IOError:
+ print "IO error with git fast-import. Is your git version recent enough?"
+ print self.gitError.read()
+
+ 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:
+ if self.verbose:
+ print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
+ self.changeRange)
+ assert self.depotPaths
+ output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
+ for p in self.depotPaths]))
+
+ for line in output:
+ changeNum = line.split(" ")[1]
+ changes.append(changeNum)
+
+ changes.reverse()
+
+ if len(self.maxChanges) > 0:
+ changes = changes[0:min(int(self.maxChanges), len(changes))]
+
+ if len(changes) == 0:
+ if not self.silent:
+ print "No changes to import!"
+ return True
+
+ if not self.silent and not self.detectBranches:
+ print "Import destination: %s" % self.branch
+
+ self.updatedBranches = set()
+
+ cnt = 1
+ for change in changes:
+ description = p4Cmd("describe %s" % change)
+ self.updateOptionDict(description)
+
+ if not self.silent:
+ sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
+ sys.stdout.flush()
+ cnt = cnt + 1
+
+ try:
+ if self.detectBranches:
+ branches = self.splitFilesIntoBranches(description)
+ for branch in branches.keys():
+ ## HACK --hwn
+ branchPrefix = self.depotPaths[0] + branch + "/"
+
+ parent = ""
+
+ filesForCommit = branches[branch]
+
+ if self.verbose:
+ print "branch is %s" % branch
+
+ self.updatedBranches.add(branch)
+
+ if branch not in self.createdBranches:
+ self.createdBranches.add(branch)
+ parent = self.knownBranches[branch]
+ if parent == branch:
+ parent = ""
+ elif self.verbose:
+ print "parent determined through known branches: %s" % parent
+
+ # main branch? use master
+ if branch == "main":
+ branch = "master"
+ else:
+
+ ## FIXME
+ branch = self.projectName + branch
+
+ if parent == "main":
+ parent = "master"
+ elif len(parent) > 0:
+ ## FIXME
+ parent = self.projectName + parent
+
+ branch = self.refPrefix + branch
+ if len(parent) > 0:
+ parent = self.refPrefix + 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]
+
+ self.commit(description, filesForCommit, branch, [branchPrefix], parent)
+ else:
+ files = self.extractFilesFromCommit(description)
+ self.commit(description, files, self.branch, self.depotPaths,
+ self.initialParent)
+ self.initialParent = ""
+ except IOError:
+ print self.gitError.read()
+ sys.exit(1)
+
+ if not self.silent:
+ print ""
+ if len(self.updatedBranches) > 0:
+ sys.stdout.write("Updated branches: ")
+ for b in self.updatedBranches:
+ sys.stdout.write("%s " % b)
+ sys.stdout.write("\n")
+
+
+ self.gitStream.close()
+ if importProcess.wait() != 0:
+ die("fast-import failed: %s" % self.gitError.read())
+ self.gitOutput.close()
+ self.gitError.close()
+
+ return True
+
+class P4Rebase(Command):
+ def __init__(self):
+ Command.__init__(self)
+ self.options = [ ]
+ self.description = ("Fetches the latest revision from perforce and "
+ + "rebases the current work (branch) against it")
+ self.verbose = False
+
+ def run(self, args):
+ sync = P4Sync()
+ sync.run([])
+
+ [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]+$", "", upstream)
+
+ print "Rebasing the current branch onto %s" % upstream
+ oldHead = read_pipe("git rev-parse HEAD").strip()
+ system("git rebase %s" % upstream)
+ system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
+ return True
+
+class P4Clone(P4Sync):
+ def __init__(self):
+ P4Sync.__init__(self)
+ self.description = "Creates a new git repository and imports from Perforce into it"
+ self.usage = "usage: %prog [options] //depot/path[@revRange]"
+ self.options.append(
+ optparse.make_option("--destination", dest="cloneDestination",
+ action='store', default=None,
+ help="where to leave result of the clone"))
+ self.cloneDestination = None
+ self.needsGit = False
+
+ def defaultDestination(self, args):
+ ## TODO: use common prefix of args?
+ depotPath = args[0]
+ depotDir = re.sub("(@[^@]*)$", "", 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("//"):
+ 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)
+ os.chdir(self.cloneDestination)
+ system("git init")
+ self.gitdir = os.getcwd() + "/.git"
+ if not P4Sync.run(self, depotPaths):
+ return False
+ if self.branch != "master":
+ if gitBranchExists("refs/remotes/p4/master"):
+ system("git branch master refs/remotes/p4/master")
+ system("git checkout -f")
+ else:
+ print "Could not detect main branch. No checkout/master branch created."
+
+ 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):
+ 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,
+ "sync" : P4Sync,
+ "rebase" : P4Rebase,
+ "clone" : P4Clone,
+ "rollback" : P4RollBack,
+ "branches" : P4Branches
+}
+
+
+def main():
+ if len(sys.argv[1:]) == 0:
+ printUsage(commands.keys())
+ sys.exit(2)
+
+ cmd = ""
+ cmdName = sys.argv[1]
+ try:
+ klass = commands[cmdName]
+ cmd = klass()
+ except KeyError:
+ print "unknown command %s" % cmdName
+ print ""
+ printUsage(commands.keys())
+ sys.exit(2)
+
+ options = cmd.options
+ cmd.gitdir = os.environ.get("GIT_DIR", None)
+
+ args = sys.argv[2:]
+
+ if len(options) > 0:
+ options.append(optparse.make_option("--git-dir", dest="gitdir"))
+
+ parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
+ options,
+ description = cmd.description,
+ formatter = HelpFormatter())
+
+ (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
+ global verbose
+ verbose = cmd.verbose
+ if cmd.needsGit:
+ if cmd.gitdir == None:
+ cmd.gitdir = os.path.abspath(".git")
+ if not isValidGitDir(cmd.gitdir):
+ cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
+ if os.path.exists(cmd.gitdir):
+ cdup = read_pipe("git rev-parse --show-cdup").strip()
+ if len(cdup) > 0:
+ os.chdir(cdup);
+
+ if not isValidGitDir(cmd.gitdir):
+ if isValidGitDir(cmd.gitdir + "/.git"):
+ cmd.gitdir += "/.git"
+ else:
+ die("fatal: cannot locate git repository at %s" % cmd.gitdir)
+
+ os.environ["GIT_DIR"] = cmd.gitdir
+
+ if not cmd.run(args):
+ parser.print_help()
+
+
+if __name__ == '__main__':
+ main()
diff --git a/contrib/fast-import/git-p4.bat b/contrib/fast-import/git-p4.bat
new file mode 100644
index 0000000..9f97e88
--- /dev/null
+++ b/contrib/fast-import/git-p4.bat
@@ -0,0 +1 @@
+@python "%~d0%~p0git-p4" %*
diff --git a/contrib/fast-import/git-p4.txt b/contrib/fast-import/git-p4.txt
new file mode 100644
index 0000000..b16a838
--- /dev/null
+++ b/contrib/fast-import/git-p4.txt
@@ -0,0 +1,159 @@
+git-p4 - Perforce <-> Git converter using git-fast-import
+
+Usage
+=====
+
+git-p4 supports two main modes: Importing from Perforce to a Git repository is
+done using "git-p4 sync" or "git-p4 rebase". Submitting changes from Git back
+to Perforce is done using "git-p4 submit".
+
+Importing
+=========
+
+You can simply start with
+
+ git-p4 clone //depot/path/project
+
+or
+
+ git-p4 clone //depot/path/project myproject
+
+This will create an empty git repository in a subdirectory called "project" (or
+"myproject" with the second command), import the head revision from the
+specified perforce path into a git "p4" branch (remotes/p4 actually), create a
+master branch off it and check it out. If you want the entire history (not just
+the head revision) then you can simply append a "@all" to the depot path:
+
+ git-p4 clone //depot/project/main@all myproject
+
+
+
+If you want more control you can also use the git-p4 sync command directly:
+
+ mkdir repo-git
+ cd repo-git
+ git init
+ git-p4 sync //path/in/your/perforce/depot
+
+This will import the current head revision of the specified depot path into a
+"remotes/p4/master" branch of your git repository. You can use the
+--branch=mybranch option to use a different branch.
+
+If you want to import the entire history of a given depot path just use
+
+ git-p4 sync //path/in/depot@all
+
+To achieve optimal compression you may want to run 'git repack -a -d -f' after
+a big import. This may take a while.
+
+Support for Perforce integrations is still work in progress. Don't bother
+trying it unless you want to hack on it :)
+
+Incremental Imports
+===================
+
+After an initial import you can easily synchronize your git repository with
+newer changes from the Perforce depot by just calling
+
+ git-p4 sync
+
+in your git repository. By default the "remotes/p4/master" branch is updated.
+
+It is recommended to run 'git repack -a -d -f' from time to time when using
+incremental imports to optimally combine the individual git packs that each
+incremental import creates through the use of git-fast-import.
+
+
+A useful setup may be that you have a periodically updated git repository
+somewhere that contains a complete import of a Perforce project. That git
+repository can be used to clone the working repository from and one would
+import from Perforce directly after cloning using git-p4. If the connection to
+the Perforce server is slow and the working repository hasn't been synced for a
+while it may be desirable to fetch changes from the origin git repository using
+the efficient git protocol. git-p4 supports this setup by calling "git fetch origin"
+by default if there is an origin branch. You can disable this using
+
+ git config git-p4.syncFromOrigin false
+
+Updating
+========
+
+A common working pattern is to fetch the latest changes from the Perforce depot
+and merge them with local uncommitted changes. The recommended way is to use
+git's rebase mechanism to preserve linear history. git-p4 provides a convenient
+
+ git-p4 rebase
+
+command that calls git-p4 sync followed by git rebase to rebase the current
+working branch.
+
+Submitting
+==========
+
+git-p4 has support for submitting changes from a git repository back to the
+Perforce depot. This requires a Perforce checkout separate to your git
+repository. To submit all changes that are in the current git branch but not in
+the "p4" branch (or "origin" if "p4" doesn't exist) simply call
+
+ git-p4 submit
+
+in your git repository. If you want to submit changes in a specific branch that
+is not your current git branch you can also pass that as an argument:
+
+ git-p4 submit mytopicbranch
+
+You can override the reference branch with the --origin=mysourcebranch option.
+
+If a submit fails you may have to "p4 resolve" and submit manually. You can
+continue importing the remaining changes with
+
+ git-p4 submit --continue
+
+After submitting you should sync your perforce import branch ("p4" or "origin")
+from Perforce using git-p4's sync command.
+
+If you have changes in your working directory that you haven't committed into
+git yet but that you want to commit to Perforce directly ("quick fixes") then
+you do not have to go through the intermediate step of creating a git commit
+first but you can just call
+
+ git-p4 submit --direct
+
+
+Example
+=======
+
+# Clone a repository
+ git-p4 clone //depot/path/project
+# Enter the newly cloned directory
+ cd project
+# Do some work...
+ vi foo.h
+# ... and commit locally to gi
+ git commit foo.h
+# In the meantime somebody submitted changes to the Perforce depot. Rebase your latest
+# changes against the latest changes in Perforce:
+ git-p4 rebase
+# Submit your locally committed changes back to Perforce
+ git-p4 submit
+# ... and synchronize with Perforce
+ git-p4 rebase
+
+
+Implementation Details...
+=========================
+
+* Changesets from Perforce are imported using git fast-import.
+* The import does not require anything from the Perforce client view as it just uses
+ "p4 print //depot/path/file#revision" to get the actual file contents.
+* Every imported changeset has a special [git-p4...] line at the
+ end of the log message that gives information about the corresponding
+ Perforce change number and is also used by git-p4 itself to find out
+ where to continue importing when doing incremental imports.
+ Basically when syncing it extracts the perforce change number of the
+ latest commit in the "p4" branch and uses "p4 changes //depot/path/...@changenum,#head"
+ to find out which changes need to be imported.
+* git-p4 submit uses "git rev-list" to pick the commits between the "p4" branch
+ and the current branch.
+ The commits themselves are applied using git diff/format-patch ... | git apply
+