#!/usr/bin/env python # # git-p4.py -- A tool for bidirectional operation between a Perforce depot and git. # # Author: Simon Hausmann # Copyright: 2007 Simon Hausmann # 2007 Trolltech ASA # License: MIT # 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 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 = "%s " % "p4" user = gitConfig("git-p4.user") if len(user) > 0: real_cmd += "-u %s " % user password = gitConfig("git-p4.password") if len(password) > 0: real_cmd += "-P %s " % password port = gitConfig("git-p4.port") if len(port) > 0: real_cmd += "-p %s " % port host = gitConfig("git-p4.host") if len(host) > 0: real_cmd += "-h %s " % host client = gitConfig("git-p4.client") if len(client) > 0: real_cmd += "-c %s " % client real_cmd += "%s" % (cmd) if verbose: print real_cmd return real_cmd 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 p4_read_pipe_lines(c): """Specifically invoke p4 on the command supplied. """ real_cmd = p4_build_cmd(c) return read_pipe_lines(real_cmd) def system(cmd): if verbose: sys.stderr.write("executing %s\n" % cmd) if os.system(cmd) != 0: die("command failed: %s" % cmd) def p4_system(cmd): """Specifically invoke p4 as the system command. """ real_cmd = p4_build_cmd(cmd) return system(real_cmd) def isP4Exec(kind): """Determine if a Perforce 'kind' should have execute permission 'p4 help filetypes' gives a list of the types. If it starts with 'x', or x follows one of a few letters. Otherwise, if there is an 'x' after a plus sign, it is also executable""" return (re.search(r"(^[cku]?x)|\+.*x", kind) != None) 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_system("reopen -t %s %s" % (p4Type, file)) def getP4OpenedType(file): # Returns the perforce file type for the given file. result = read_pipe("p4 opened %s" % file) match = re.match(".*\((.+)\)\r?$", result) if match: return match.group(1) else: die("Could not determine file type for %s (result: '%s')" % (file, result)) def diffTreePattern(): # This is a simple generator for the diff tree regex pattern. This could be # a class variable if this and parseDiffTreeEntry were a part of a class. pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)') while True: yield pattern def parseDiffTreeEntry(entry): """Parses a single diff tree entry into its component elements. See git-diff-tree(1) manpage for details about the format of the diff output. This method returns a dictionary with the following elements: src_mode - The mode of the source file dst_mode - The mode of the destination file src_sha1 - The sha1 for the source file dst_sha1 - The sha1 fr the destination file status - The one letter status of the diff (i.e. 'A', 'M', 'D', etc) status_score - The score for the status (applicable for 'C' and 'R' statuses). This is None if there is no score. src - The path for the source file. dst - The path for the destination file. This is only present for copy or renames. If it is not present, this is None. If the pattern is not matched, None is returned.""" match = diffTreePattern().next().match(entry) if match: return { 'src_mode': match.group(1), 'dst_mode': match.group(2), 'src_sha1': match.group(3), 'dst_sha1': match.group(4), 'status': match.group(5), 'status_score': match.group(6), 'src': match.group(7), 'dst': match.group(10) } return None def isModeExec(mode): # Returns True if the given git mode represents an executable file, # otherwise False. return mode[-3:] == "755" def isModeExecChanged(src_mode, dst_mode): return isModeExec(src_mode) != isModeExec(dst_mode) def p4CmdList(cmd, stdin=None, stdin_mode='w+b'): cmd = p4_build_cmd("-G %s" % (cmd)) if verbose: sys.stderr.write("Opening pipe: %s\n" % 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) stdin_file.write(stdin) stdin_file.flush() stdin_file.seek(0) p4 = subprocess.Popen(cmd, shell=True, stdin=stdin_file, stdout=subprocess.PIPE) result = [] try: while True: entry = marshal.load(p4.stdout) result.append(entry) except EOFError: pass exitCode = p4.wait() if exitCode != 0: entry = {} entry["p4ExitCode"] = exitCode result.append(entry) return result def p4Cmd(cmd): list = p4CmdList(cmd) result = {} for entry in list: result.update(entry) return result; def p4Where(depotPath): if not depotPath.endswith("/"): depotPath += "/" 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 p4BranchesInGit(branchesAreInRemotes = True): branches = {} cmdline = "git rev-parse --symbolic " if branchesAreInRemotes: cmdline += " --remotes" else: cmdline += " --branches" for line in read_pipe_lines(cmdline): line = line.strip() ## only import to p4/ if not line.startswith('p4/') or line == "p4/HEAD": continue branch = line # strip off p4 branch = re.sub ("^p4/", "", line) branches[branch] = parseRevision(line) return branches def findUpstreamBranchPoint(head = "HEAD"): branches = p4BranchesInGit() # map from depot-path to branch name branchByDepotPath = {} for branch in branches.keys(): tip = branches[branch] log = extractLogMessageFromGitCommit(tip) settings = extractSettingsGitLog(log) if settings.has_key("depot-paths"): paths = ",".join(settings["depot-paths"]) branchByDepotPath[paths] = "remotes/p4/" + branch settings = None parent = 0 while parent < 65535: commit = head + "~%s" % parent log = extractLogMessageFromGitCommit(commit) settings = extractSettingsGitLog(log) if settings.has_key("depot-paths"): paths = ",".join(settings["depot-paths"]) if branchByDepotPath.has_key(paths): return [branchByDepotPath[paths], settings] parent = parent + 1 return ["", settings] def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent=True): if not silent: print ("Creating/updating branch(es) in %s based on origin branch(es)" % localRefPrefix) originPrefix = "origin/p4/" for line in read_pipe_lines("git rev-parse --symbolic --remotes"): line = line.strip() if (not line.startswith(originPrefix)) or line.endswith("HEAD"): continue headName = line[len(originPrefix):] remoteHead = localRefPrefix + headName originHead = line original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead)) if (not original.has_key('depot-paths') or not original.has_key('change')): continue update = False if not gitBranchExists(remoteHead): if verbose: print "creating %s" % remoteHead update = True else: settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead)) if settings.has_key('change') > 0: if settings['depot-paths'] == original['depot-paths']: originP4Change = int(original['change']) p4Change = int(settings['change']) if originP4Change > p4Change: print ("%s (%s) is newer than %s (%s). " "Updating p4 branch from origin." % (originHead, originP4Change, remoteHead, p4Change)) update = True else: print ("Ignoring: %s was imported from %s while " "%s was imported from %s" % (originHead, ','.join(original['depot-paths']), remoteHead, ','.join(settings['depot-paths']))) if update: system("git update-ref %s %s" % (remoteHead, originHead)) def originP4BranchesExist(): return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master") def p4ChangesForPaths(depotPaths, changeRange): assert depotPaths output = p4_read_pipe_lines("changes " + ' '.join (["%s...%s" % (p, changeRange) for p in depotPaths])) changes = [] for line in output: changeNum = line.split(" ")[1] changes.append(int(changeNum)) changes.sort() return changes 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("--verbose", dest="verbose", action="store_true"), optparse.make_option("--origin", dest="origin"), optparse.make_option("-M", dest="detectRename", action="store_true"), ] self.description = "Submit changes from git to the perforce depot." self.usage += " [name of git branch to submit into perforce depot]" self.interactive = True self.origin = "" self.detectRename = False self.verbose = False self.isWindows = (platform.system() == "Windows") def check(self): if len(p4CmdList("opened ...")) > 0: die("You have files opened with perforce! Close them before starting the sync.") # replaces everything between 'Description:' and the next P4 submit template field with the # commit message def prepareLogMessage(self, template, message): result = "" inDescriptionSection = False for line in template.split("\n"): if line.startswith("#"): result += line + "\n" continue if inDescriptionSection: if line.startswith("Files:"): inDescriptionSection = False else: continue else: if line.startswith("Description:"): inDescriptionSection = True line += "\n" for messageLine in message.split("\n"): line += "\t" + messageLine + "\n" result += line + "\n" return result def prepareSubmitTemplate(self): # remove lines in the Files section that show changes to files outside the depot path we're committing into template = "" inFilesSection = False for line in p4_read_pipe_lines("change -o"): if line.endswith("\r\n"): line = line[:-2] + "\n" if inFilesSection: if line.startswith("\t"): # path starts and ends with a tab path = line[1:] lastTab = path.rfind("\t") if lastTab != -1: path = path[:lastTab] if not path.startswith(self.depotPath): continue else: inFilesSection = False else: if line.startswith("Files:"): inFilesSection = True template += line return template def applyCommit(self, id): print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id)) diffOpts = ("", "-M")[self.detectRename] diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id)) filesToAdd = set() filesToDelete = set() editedFiles = set() filesToChangeExecBit = {} for line in diff: diff = parseDiffTreeEntry(line) modifier = diff['status'] path = diff['src'] if modifier == "M": p4_system("edit \"%s\"" % path) if isModeExecChanged(diff['src_mode'], diff['dst_mode']): filesToChangeExecBit[path] = diff['dst_mode'] editedFiles.add(path) elif modifier == "A": filesToAdd.add(path) filesToChangeExecBit[path] = diff['dst_mode'] if path in filesToDelete: filesToDelete.remove(path) elif modifier == "D": filesToDelete.add(path) if path in filesToAdd: filesToAdd.remove(path) elif modifier == "R": src, dest = diff['src'], diff['dst'] p4_system("integrate -Dt \"%s\" \"%s\"" % (src, dest)) p4_system("edit \"%s\"" % (dest)) if isModeExecChanged(diff['src_mode'], diff['dst_mode']): filesToChangeExecBit[dest] = diff['dst_mode'] os.unlink(dest) editedFiles.add(dest) filesToDelete.add(src) else: die("unknown modifier %s for %s" % (modifier, path)) diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id) patchcmd = diffcmd + " | git apply " tryPatchCmd = patchcmd + "--check -" applyPatchCmd = patchcmd + "--check --apply -" 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..." for f in editedFiles: p4_system("revert \"%s\"" % f); for f in filesToAdd: system("rm %s" %f) return elif response == "a": os.system(applyPatchCmd) if len(filesToAdd) > 0: print "You may also want to call p4 add on the following files:" print " ".join(filesToAdd) if len(filesToDelete): print "The following files should be scheduled for deletion with p4 delete:" print " ".join(filesToDelete) die("Please resolve and submit the conflict manually and " + "continue afterwards with git-p4 submit --continue") elif response == "w": system(diffcmd + " > patch.txt") print "Patch saved to patch.txt in %s !" % self.clientPath die("Please resolve and submit the conflict manually and " "continue afterwards with git-p4 submit --continue") system(applyPatchCmd) for f in filesToAdd: p4_system("add \"%s\"" % f) for f in filesToDelete: p4_system("revert \"%s\"" % f) p4_system("delete \"%s\"" % f) # Set/clear executable bits for f in filesToChangeExecBit.keys(): mode = filesToChangeExecBit[f] setP4ExecBit(f, mode) logMessage = extractLogMessageFromGitCommit(id) logMessage = logMessage.strip() template = self.prepareSubmitTemplate() if self.interactive: submitTemplate = self.prepareLogMessage(template, logMessage) if os.environ.has_key("P4DIFF"): del(os.environ["P4DIFF"]) diff = read_pipe("p4 diff -du ...") newdiff = "" for newFile in filesToAdd: newdiff += "==== new file ====\n" newdiff += "--- /dev/null\n" newdiff += "+++ %s\n" % newFile f = open(newFile, "r") for line in f.readlines(): newdiff += "+" + line f.close() separatorLine = "######## everything below this line is just the diff #######\n" [handle, fileName] = tempfile.mkstemp() tmpFile = os.fdopen(handle, "w+") if self.isWindows: submitTemplate = submitTemplate.replace("\n", "\r\n") separatorLine = separatorLine.replace("\n", "\r\n") newdiff = newdiff.replace("\n", "\r\n") tmpFile.write(submitTemplate + separatorLine + diff + newdiff) tmpFile.close() defaultEditor = "vi" if platform.system() == "Windows": defaultEditor = "notepad" if os.environ.has_key("P4EDITOR"): editor = os.environ.get("P4EDITOR") else: 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") write_pipe("p4 submit -i", submitTemplate) 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 allowSubmit = gitConfig("git-p4.allowSubmit") if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","): die("%s is not in git-p4.allowSubmit" % self.master) [upstream, settings] = findUpstreamBranchPoint() self.depotPath = settings['depot-paths'][0] if len(self.origin) == 0: self.origin = upstream if self.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.clientPath = p4Where(self.depotPath) if len(self.clientPath) == 0: print "Error: Cannot locate perforce checkout of %s in client view" % self.depotPath sys.exit(128) print "Perforce checkout for depot path %s located at %s" % (self.depotPath, self.clientPath) self.oldWorkingDirectory = os.getcwd() os.chdir(self.clientPath) print "Syncronizing p4 checkout..." p4_system("sync ...") self.check() commits = [] for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)): commits.append(line.strip()) commits.reverse() while len(commits) > 0: commit = commits[0] commits = commits[1:] self.applyCommit(commit) if not self.interactive: break if len(commits) == 0: print "All changes applied!" os.chdir(self.oldWorkingDirectory) sync = P4Sync() sync.run([]) rebase = P4Rebase() rebase.rebase() 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"), optparse.make_option("--use-client-spec", dest="useClientSpec", action='store_true', help="Only sync files that are included in the Perforce Client Spec") ] self.description = """Imports from Perforce into a git repository.\n example: //depot/my/project/ -- to import the current head //depot/my/project/@all -- to import everything //depot/my/project/@1,6 -- to import only from revision 1 to 6 (a ... is not needed in the path p4 specification, it's added implicitly)""" self.usage += " //depot/path[@revRange]" self.silent = False self.createdBranches = Set() self.committedChanges = Set() self.branch = "" self.detectBranches = False self.detectLabels = False self.changesFile = "" self.syncWithOrigin = True self.verbose = False self.importIntoRemotes = True self.maxChanges = "" self.isWindows = (platform.system() == "Windows") self.keepRepoPath = False self.depotPaths = None self.p4BranchesInGit = [] self.cloneExclude = [] self.useClientSpec = False self.clientSpecDirs = [] if gitConfig("git-p4.syncFromOrigin") == "false": self.syncWithOrigin = False def extractFilesFromCommit(self, commit): self.cloneExclude = [re.sub(r"\.\.\.$", "", path) for path in self.cloneExclude] files = [] fnum = 0 while commit.has_key("depotFile%s" % fnum): path = commit["depotFile%s" % fnum] if [p for p in self.cloneExclude if path.startswith (p)]: found = False else: 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): filesForCommit = [] filesToRead = [] for f in files: includeFile = True for val in self.clientSpecDirs: if f['path'].startswith(val[0]): if val[1] <= 0: includeFile = False break if includeFile: filesForCommit.append(f) if f['action'] != 'delete': filesToRead.append(f) filedata = [] if len(filesToRead) > 0: filedata = p4CmdList('-x - print', stdin='\n'.join(['%s#%s' % (f['path'], f['rev']) for f in filesToRead]), stdin_mode='w+') if "p4ExitCode" in filedata[0]: die("Problems executing p4. Error: [%d]." % (filedata[0]['p4ExitCode'])); j = 0; contents = {} while j < len(filedata): stat = filedata[j] j += 1 text = []; while j < len(filedata) and filedata[j]['code'] in ('text', 'unicode', 'binary'): text.append(filedata[j]['data']) j += 1 text = ''.join(text) if not stat.has_key('depotFile'): sys.stderr.write("p4 print fails with: %s\n" % repr(stat)) continue if stat['type'] in ('text+ko', 'unicode+ko', 'binary+ko'): text = re.sub(r'(?i)\$(Id|Header):[^$]*\$',r'$\1$', text) elif stat['type'] in ('text+k', 'ktext', 'kxtext', 'unicode+k', 'binary+k'): text = re.sub(r'\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$]*\$',r'$\1$', text) contents[stat['depotFile']] = text for f in filesForCommit: path = f['path'] if contents.has_key(path): f['data'] = contents[path] return filesForCommit 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 = self.readP4Files(new_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 %s %s" % (author, epoch, self.tz) self.gitStream.write("committer %s\n" % committer) self.gitStream.write("data < 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: data = file['data'] mode = "644" if isP4Exec(file["type"]): mode = "755" elif file["type"] == "symlink": mode = "120000" # p4 print on a symlink contains "target\n", so strip it off data = data[:-1] if self.isWindows and file["type"].endswith("text"): data = data.replace("\r\n", "\n") self.gitStream.write("M %s 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 %s %s" % (owner, epoch, self.tz) self.gitStream.write("tagger %s\n" % tagger) self.gitStream.write("data <" 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.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 " + ' '.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 getBranchMappingFromGitBranches(self): branches = p4BranchesInGit(self.importIntoRemotes) for branch in branches.keys(): if branch == "master": branch = "main" else: branch = branch[len(self.projectName):] self.knownBranches[branch] = branch def listExistingP4GitBranches(self): # branches holds mapping from name to commit branches = p4BranchesInGit(self.importIntoRemotes) self.p4BranchesInGit = branches.keys() for branch in branches.keys(): self.initialParents[self.refPrefix + branch] = branches[branch] def updateOptionDict(self, d): option_keys = {} if self.keepRepoPath: option_keys['keepRepoPath'] = 1 d["options"] = ' '.join(sorted(option_keys.keys())) def readOptions(self, d): self.keepRepoPath = (d.has_key('options') and ('keepRepoPath' in d['options'])) def gitRefForBranch(self, branch): if branch == "main": return self.refPrefix + "master" if len(branch) <= 0: return branch return self.refPrefix + self.projectName + branch def gitCommitByP4Change(self, ref, change): if self.verbose: print "looking in ref " + ref + " for change %s using bisect..." % change earliestCommit = "" latestCommit = parseRevision(ref) while True: if self.verbose: print "trying: earliest %s latest %s" % (earliestCommit, latestCommit) next = read_pipe("git rev-list --bisect %s %s" % (latestCommit, earliestCommit)).strip() if len(next) == 0: if self.verbose: print "argh" return "" log = extractLogMessageFromGitCommit(next) settings = extractSettingsGitLog(log) currentChange = int(settings['change']) if self.verbose: print "current change %s" % currentChange if currentChange == change: if self.verbose: print "found %s" % next return next if currentChange < change: earliestCommit = "^%s" % next else: latestCommit = "%s" % next return "" def importNewBranch(self, branch, maxChange): # make fast-import flush all changes to disk and update the refs using the checkpoint # command so that we can try to find the branch parent in the git history self.gitStream.write("checkpoint\n\n"); self.gitStream.flush(); branchPrefix = self.depotPaths[0] + branch + "/" range = "@1,%s" % maxChange #print "prefix" + branchPrefix changes = p4ChangesForPaths([branchPrefix], range) if len(changes) <= 0: return False firstChange = changes[0] #print "first change in branch: %s" % firstChange sourceBranch = self.knownBranches[branch] sourceDepotPath = self.depotPaths[0] + sourceBranch sourceRef = self.gitRefForBranch(sourceBranch) #print "source " + sourceBranch branchParentChange = int(p4Cmd("changes -m 1 %s...@1,%s" % (sourceDepotPath, firstChange))["change"]) #print "branch parent: %s" % branchParentChange gitParent = self.gitCommitByP4Change(sourceRef, branchParentChange) if len(gitParent) > 0: self.initialParents[self.gitRefForBranch(branch)] = gitParent #print "parent git commit: %s" % gitParent self.importChanges(changes) return True def importChanges(self, changes): 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 = "" 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] self.commit(description, filesForCommit, branch, [branchPrefix], parent) else: files = self.extractFilesFromCommit(description) self.commit(description, files, self.branch, self.depotPaths, self.initialParent) self.initialParent = "" except IOError: print self.gitError.read() sys.exit(1) def importHeadRevision(self, revision): print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), revision, self.branch) details = { "user" : "git perforce import user", "time" : int(time.time()) } details["desc"] = ("Initial import of %s from the state at revision %s" % (' '.join(self.depotPaths), revision)) details["change"] = revision newestRevision = 0 fileCnt = 0 for info in p4CmdList("files " + ' '.join(["%s...%s" % (p, 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() def getClientSpec(self): specList = p4CmdList( "client -o" ) temp = {} for entry in specList: for k,v in entry.iteritems(): if k.startswith("View"): if v.startswith('"'): start = 1 else: start = 0 index = v.find("...") v = v[start:index] if v.startswith("-"): v = v[1:] temp[v] = -len(v) else: temp[v] = len(v) self.clientSpecDirs = temp.items() self.clientSpecDirs.sort( lambda x, y: abs( y[1] ) - abs( x[1] ) ) def run(self, args): self.depotPaths = [] self.changeRange = "" self.initialParent = "" self.previousDepotPaths = [] # map from branch depot path to parent branch self.knownBranches = {} self.initialParents = {} self.hasOrigin = originP4BranchesExist() if not self.syncWithOrigin: self.hasOrigin = False if self.importIntoRemotes: self.refPrefix = "refs/remotes/p4/" else: self.refPrefix = "refs/heads/p4/" if self.syncWithOrigin and self.hasOrigin: if not self.silent: print "Syncing with origin first by calling git fetch origin" system("git fetch origin") if len(self.branch) == 0: self.branch = self.refPrefix + "master" if gitBranchExists("refs/heads/p4") and self.importIntoRemotes: system("git update-ref %s refs/heads/p4" % self.branch) system("git branch -D p4"); # create it /after/ importing, when master exists if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch): system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch)) if self.useClientSpec or gitConfig("p4.useclientspec") == "true": self.getClientSpec() # TODO: should always look at previous commits, # merge with previous imports, if possible. if args == []: if self.hasOrigin: createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent) self.listExistingP4GitBranches() if len(self.p4BranchesInGit) > 1: if not self.silent: print "Importing from/into multiple branches" self.detectBranches = True if self.verbose: print "branches: %s" % self.p4BranchesInGit p4Change = 0 for branch in self.p4BranchesInGit: logMsg = extractLogMessageFromGitCommit(self.refPrefix + branch) settings = extractSettingsGitLog(logMsg) self.readOptions(settings) if (settings.has_key('depot-paths') and settings.has_key ('change')): change = int(settings['change']) + 1 p4Change = max(p4Change, change) depotPaths = sorted(settings['depot-paths']) if self.previousDepotPaths == []: self.previousDepotPaths = depotPaths else: paths = [] for (prev, cur) in zip(self.previousDepotPaths, depotPaths): 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) 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: revision = self.changeRange self.changeRange = "" p = p[:atIdx] elif p.find("#") != -1: hashIdx = p.index("#") revision = p[hashIdx:] p = p[:hashIdx] elif self.previousDepotPaths == []: revision = "#head" p = re.sub ("\.\.\.$", "", p) if not p.endswith("/"): p += "/" newPaths.append(p) self.depotPaths = newPaths self.loadUserMapFromCache() self.labels = {} if self.detectLabels: self.getLabels(); if self.detectBranches: ## FIXME - what's a P4 projectName ? self.projectName = self.guessProjectName() if self.hasOrigin: self.getBranchMappingFromGitBranches() else: self.getBranchMapping() if self.verbose: print "p4-git branches: %s" % self.p4BranchesInGit print "initial parents: %s" % self.initialParents for b in self.p4BranchesInGit: if b != "master": ## FIXME b = b[len(self.projectName):] self.createdBranches.add(b) self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60)) importProcess = subprocess.Popen(["git", "fast-import"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE); self.gitOutput = importProcess.stdout self.gitStream = importProcess.stdin self.gitError = importProcess.stderr if revision: self.importHeadRevision(revision) else: changes = [] if len(self.changesFile) > 0: output = open(self.changesFile).readlines() changeSet = Set() for line in output: changeSet.add(int(line)) for change in changeSet: changes.append(change) changes.sort() else: if self.verbose: print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths), self.changeRange) changes = p4ChangesForPaths(self.depotPaths, self.changeRange) if len(self.maxChanges) > 0: changes = changes[:min(int(self.maxChanges), len(changes))] if len(changes) == 0: if not self.silent: print "No changes to import!" return True if not self.silent and not self.detectBranches: print "Import destination: %s" % self.branch self.updatedBranches = set() self.importChanges(changes) if not self.silent: print "" if len(self.updatedBranches) > 0: sys.stdout.write("Updated branches: ") for b in self.updatedBranches: sys.stdout.write("%s " % b) sys.stdout.write("\n") self.gitStream.close() if importProcess.wait() != 0: die("fast-import failed: %s" % self.gitError.read()) self.gitOutput.close() self.gitError.close() return True class P4Rebase(Command): def __init__(self): Command.__init__(self) self.options = [ ] self.description = ("Fetches the latest revision from perforce and " + "rebases the current work (branch) against it") self.verbose = False def run(self, args): sync = P4Sync() sync.run([]) return self.rebase() def rebase(self): if os.system("git update-index --refresh") != 0: die("Some files in your working directory are modified and different than what is in your index. You can use git update-index to bring the index up-to-date or stash away all your changes with git stash."); if len(read_pipe("git diff-index HEAD --")) > 0: die("You have uncommited changes. Please commit them before rebasing or stash them away with git stash."); [upstream, settings] = findUpstreamBranchPoint() if len(upstream) == 0: die("Cannot find upstream branchpoint for rebase") # the branchpoint may be p4/foo~3, so strip off the parent upstream = re.sub("~[0-9]+$", "", upstream) print "Rebasing the current branch onto %s" % upstream oldHead = read_pipe("git rev-parse HEAD").strip() system("git rebase %s" % upstream) system("git diff-tree --stat --summary -M %s HEAD" % oldHead) return True class P4Clone(P4Sync): def __init__(self): P4Sync.__init__(self) self.description = "Creates a new git repository and imports from Perforce into it" self.usage = "usage: %prog [options] //depot/path[@revRange]" self.options += [ optparse.make_option("--destination", dest="cloneDestination", action='store', default=None, help="where to leave result of the clone"), optparse.make_option("-/", dest="cloneExclude", action="append", type="string", help="exclude depot path") ] self.cloneDestination = None self.needsGit = False # This is required for the "append" cloneExclude action def ensure_value(self, attr, value): if not hasattr(self, attr) or getattr(self, attr) is None: setattr(self, attr, value) return getattr(self, attr) def defaultDestination(self, args): ## TODO: use common prefix of args? depotPath = args[0] depotDir = re.sub("(@[^@]*)$", "", depotPath) depotDir = re.sub("(#[^#]*)$", "", depotDir) depotDir = re.sub(r"\.\.\.$", "", depotDir) depotDir = re.sub(r"/$", "", depotDir) return os.path.split(depotDir)[1] def run(self, args): if len(args) < 1: return False if self.keepRepoPath and not self.cloneDestination: sys.stderr.write("Must specify destination for --keep-path\n") sys.exit(1) depotPaths = args if not self.cloneDestination and len(depotPaths) > 1: self.cloneDestination = depotPaths[-1] depotPaths = depotPaths[:-1] self.cloneExclude = ["/"+p for p in self.cloneExclude] for p in depotPaths: if not p.startswith("//"): return False if not self.cloneDestination: self.cloneDestination = self.defaultDestination(args) print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination) if not os.path.exists(self.cloneDestination): os.makedirs(self.cloneDestination) 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): 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 [options]" % sys.argv[0] print "" print "valid commands: %s" % ", ".join(commands) print "" print "Try %s --help for command specific help." % sys.argv[0] print "" commands = { "debug" : P4Debug, "submit" : P4Submit, "commit" : P4Submit, "sync" : P4Sync, "rebase" : P4Rebase, "clone" : P4Clone, "rollback" : P4RollBack, "branches" : P4Branches } def main(): if len(sys.argv[1:]) == 0: printUsage(commands.keys()) sys.exit(2) cmd = "" cmdName = sys.argv[1] try: klass = commands[cmdName] cmd = klass() except KeyError: print "unknown command %s" % cmdName print "" printUsage(commands.keys()) sys.exit(2) options = cmd.options cmd.gitdir = os.environ.get("GIT_DIR", None) args = sys.argv[2:] if len(options) > 0: 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()