-#!/usr/bin/python
+#!/usr/bin/env python
#
# p4-fast-export.py
#
# TODO:
# - support integrations (at least p4i)
# - support p4 submit (hah!)
+# - emulate p4's delete behavior: if a directory becomes empty delete it. continue
+# with parent dir until non-empty dir is found.
#
-import os, string, sys, time
-import marshal, popen2, getopt
-
-branch = "refs/heads/p4"
-prefix = previousDepotPath = os.popen("git-repo-config --get p4.depotpath").read()
-if len(prefix) != 0:
- prefix = prefix[:-1]
+import os, string, sys, time, os.path
+import marshal, popen2, getopt, sha
+from sets import Set;
+
+dataCache = False
+commandCache = False
+
+silent = False
+knownBranches = Set()
+createdBranches = Set()
+committedChanges = Set()
+branch = "refs/heads/master"
+globalPrefix = previousDepotPath = os.popen("git-repo-config --get p4.depotpath").read()
+detectBranches = False
+changesFile = ""
+if len(globalPrefix) != 0:
+ globalPrefix = globalPrefix[:-1]
try:
- opts, args = getopt.getopt(sys.argv[1:], "", [ "branch=" ])
+ opts, args = getopt.getopt(sys.argv[1:], "", [ "branch=", "detect-branches", "changesfile=", "silent", "known-branches=",
+ "cache", "command-cache" ])
except getopt.GetoptError:
print "fixme, syntax error"
sys.exit(1)
for o, a in opts:
if o == "--branch":
branch = "refs/heads/" + a
-
-if len(args) == 0 and len(prefix) != 0:
- print "[using previously specified depot path %s]" % prefix
+ elif o == "--detect-branches":
+ detectBranches = True
+ elif o == "--changesfile":
+ changesFile = a
+ elif o == "--silent":
+ silent= True
+ elif o == "--known-branches":
+ for branch in open(a).readlines():
+ knownBranches.add(branch[:-1])
+ elif o == "--cache":
+ dataCache = True
+ commandCache = True
+ elif o == "--command-cache":
+ commandCache = True
+
+if len(args) == 0 and len(globalPrefix) != 0:
+ if not silent:
+ print "[using previously specified depot path %s]" % globalPrefix
elif len(args) != 1:
print "usage: %s //depot/path[@revRange]" % sys.argv[0]
print "\n example:"
print ""
sys.exit(1)
else:
- if len(prefix) != 0 and prefix != args[0]:
- print "previous import used depot path %s and now %s was specified. this doesn't work!" % (prefix, args[0])
+ if len(globalPrefix) != 0 and globalPrefix != args[0]:
+ print "previous import used depot path %s and now %s was specified. this doesn't work!" % (globalPrefix, args[0])
sys.exit(1)
- prefix = args[0]
+ globalPrefix = args[0]
changeRange = ""
revision = ""
users = {}
initialParent = ""
+lastChange = 0
+initialTag = ""
-if prefix.find("@") != -1:
- atIdx = prefix.index("@")
- changeRange = prefix[atIdx:]
+if globalPrefix.find("@") != -1:
+ atIdx = globalPrefix.index("@")
+ changeRange = globalPrefix[atIdx:]
if changeRange == "@all":
changeRange = ""
elif changeRange.find(",") == -1:
revision = changeRange
changeRange = ""
- prefix = prefix[0:atIdx]
-elif prefix.find("#") != -1:
- hashIdx = prefix.index("#")
- revision = prefix[hashIdx:]
- prefix = prefix[0:hashIdx]
+ globalPrefix = globalPrefix[0:atIdx]
+elif globalPrefix.find("#") != -1:
+ hashIdx = globalPrefix.index("#")
+ revision = globalPrefix[hashIdx:]
+ globalPrefix = globalPrefix[0:hashIdx]
elif len(previousDepotPath) == 0:
revision = "#head"
-if prefix.endswith("..."):
- prefix = prefix[:-3]
+if globalPrefix.endswith("..."):
+ globalPrefix = globalPrefix[:-3]
+
+if not globalPrefix.endswith("/"):
+ globalPrefix += "/"
-if not prefix.endswith("/"):
- prefix += "/"
+def p4File(depotPath):
+ cacheKey = "/tmp/p4cache/data-" + sha.new(depotPath).hexdigest()
+
+ data = 0
+ try:
+ if not dataCache:
+ raise
+ data = open(cacheKey, "rb").read()
+ except:
+ data = os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
+ if dataCache:
+ open(cacheKey, "wb").write(data)
+
+ return data
def p4CmdList(cmd):
- pipe = os.popen("p4 -G %s" % cmd, "rb")
+ fullCmd = "p4 -G %s" % cmd;
+
+ cacheKey = sha.new(fullCmd).hexdigest()
+ cacheKey = "/tmp/p4cache/cmd-" + cacheKey
+
+ cached = True
+ pipe = 0
+ try:
+ if not commandCache:
+ raise
+ pipe = open(cacheKey, "rb")
+ except:
+ cached = False
+ pipe = os.popen(fullCmd, "rb")
+
result = []
try:
while True:
except EOFError:
pass
pipe.close()
+
+ if not cached and commandCache:
+ pipe = open(cacheKey, "wb")
+ for r in result:
+ marshal.dump(r, pipe)
+ pipe.close()
+
return result
def p4Cmd(cmd):
result.update(entry)
return result;
-def commit(details):
- global initialParent
+def extractFilesFromCommit(commit):
+ files = []
+ fnum = 0
+ while commit.has_key("depotFile%s" % fnum):
+ path = commit["depotFile%s" % fnum]
+ if not path.startswith(globalPrefix):
+# if not silent:
+# print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, globalPrefix, change)
+ 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 isSubPathOf(first, second):
+ if not first.startswith(second):
+ return False
+ if first == second:
+ return True
+ return first[len(second)] == "/"
+
+def branchesForCommit(files):
+ global knownBranches
+ branches = Set()
+
+ for file in files:
+ relativePath = file["path"][len(globalPrefix):]
+ # strip off the filename
+ relativePath = relativePath[0:relativePath.rfind("/")]
+
+# if len(branches) == 0:
+# branches.add(relativePath)
+# knownBranches.add(relativePath)
+# continue
+
+ ###### this needs more testing :)
+ knownBranch = False
+ for branch in branches:
+ if relativePath == branch:
+ knownBranch = True
+ break
+# if relativePath.startswith(branch):
+ if isSubPathOf(relativePath, branch):
+ knownBranch = True
+ break
+# if branch.startswith(relativePath):
+ if isSubPathOf(branch, relativePath):
+ branches.remove(branch)
+ break
+
+ if knownBranch:
+ continue
+
+ for branch in knownBranches:
+ #if relativePath.startswith(branch):
+ if isSubPathOf(relativePath, branch):
+ if len(branches) == 0:
+ relativePath = branch
+ else:
+ knownBranch = True
+ break
+
+ if knownBranch:
+ continue
+
+ branches.add(relativePath)
+ knownBranches.add(relativePath)
+
+ return branches
+
+def findBranchParent(branchPrefix, files):
+ for file in files:
+ path = file["path"]
+ if not path.startswith(branchPrefix):
+ continue
+ action = file["action"]
+ if action != "integrate" and action != "branch":
+ continue
+ rev = file["rev"]
+ depotPath = path + "#" + rev
+
+ log = p4CmdList("filelog \"%s\"" % depotPath)
+ if len(log) != 1:
+ print "eek! I got confused by the filelog of %s" % depotPath
+ sys.exit(1);
+
+ log = log[0]
+ if log["action0"] != action:
+ print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
+ sys.exit(1);
+
+ branchAction = log["how0,0"]
+# if branchAction == "branch into" or branchAction == "ignored":
+# continue # ignore for branching
+
+ if not branchAction.endswith(" from"):
+ continue # ignore for branching
+# print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
+# sys.exit(1);
+
+ source = log["file0,0"]
+ if source.startswith(branchPrefix):
+ continue
+
+ lastSourceRev = log["erev0,0"]
+
+ sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
+ if len(sourceLog) != 1:
+ print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
+ sys.exit(1);
+ sourceLog = sourceLog[0]
+
+ relPath = source[len(globalPrefix):]
+ # strip off the filename
+ relPath = relPath[0:relPath.rfind("/")]
+
+ for branch in knownBranches:
+ if isSubPathOf(relPath, branch):
+# print "determined parent branch branch %s due to change in file %s" % (branch, source)
+ return branch
+# else:
+# print "%s is not a subpath of branch %s" % (relPath, branch)
+
+ return ""
+
+def commit(details, files, branch, branchPrefix, parent, merged = ""):
global users
+ global lastChange
+ global committedChanges
epoch = details["time"]
author = details["user"]
gitStream.write("commit %s\n" % branch)
+# gitStream.write("mark :%s\n" % details["change"])
+ committedChanges.add(int(details["change"]))
committer = ""
if author in users:
committer = "%s %s %s" % (users[author], epoch, tz)
gitStream.write("data <<EOT\n")
gitStream.write(details["desc"])
- gitStream.write("\n[ imported from %s; change %s ]\n" % (prefix, details["change"]))
+ gitStream.write("\n[ imported from %s; change %s ]\n" % (branchPrefix, details["change"]))
gitStream.write("EOT\n\n")
- if len(initialParent) > 0:
- gitStream.write("from %s\n" % initialParent)
- initialParent = ""
+ if len(parent) > 0:
+ gitStream.write("from %s\n" % parent)
- fnum = 0
- while details.has_key("depotFile%s" % fnum):
- path = details["depotFile%s" % fnum]
- if not path.startswith(prefix):
- print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, prefix, change)
- fnum = fnum + 1
- continue
+ if len(merged) > 0:
+ gitStream.write("merge %s\n" % merged)
- rev = details["rev%s" % fnum]
+ for file in files:
+ path = file["path"]
+ if not path.startswith(branchPrefix):
+# if not silent:
+# print "\nchanged files: ignoring path %s outside of branch prefix %s in change %s" % (path, branchPrefix, details["change"])
+ continue
+ rev = file["rev"]
depotPath = path + "#" + rev
- relPath = path[len(prefix):]
- action = details["action%s" % fnum]
+ relPath = path[len(branchPrefix):]
+ action = file["action"]
+
+ if file["type"] == "apple":
+ print "\nfile %s is a strange apple file that forks. Ignoring!" % path
+ continue
if action == "delete":
gitStream.write("D %s\n" % relPath)
else:
mode = 644
- if details["type%s" % fnum].startswith("x"):
+ if file["type"].startswith("x"):
mode = 755
- data = os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
+ data = p4File(depotPath)
gitStream.write("M %s inline %s\n" % (mode, relPath))
gitStream.write("data %s\n" % len(data))
gitStream.write(data)
gitStream.write("\n")
- fnum = fnum + 1
-
gitStream.write("\n")
- gitStream.write("tag p4/%s\n" % details["change"])
- gitStream.write("from %s\n" % branch);
- gitStream.write("tagger %s\n" % committer);
- gitStream.write("data 0\n\n")
+ lastChange = int(details["change"])
+
+def extractFilesInCommitToBranch(files, branchPrefix):
+ newFiles = []
+
+ for file in files:
+ path = file["path"]
+ if path.startswith(branchPrefix):
+ newFiles.append(file)
+
+ return newFiles
+
+def findBranchSourceHeuristic(files, branch, branchPrefix):
+ for file in files:
+ action = file["action"]
+ if action != "integrate" and action != "branch":
+ continue
+ path = file["path"]
+ rev = file["rev"]
+ depotPath = path + "#" + rev
+
+ log = p4CmdList("filelog \"%s\"" % depotPath)
+ if len(log) != 1:
+ print "eek! I got confused by the filelog of %s" % depotPath
+ sys.exit(1);
+
+ log = log[0]
+ if log["action0"] != action:
+ print "eek! wrong action in filelog for %s : found %s, expected %s" % (depotPath, log["action0"], action)
+ sys.exit(1);
+
+ branchAction = log["how0,0"]
+
+ if not branchAction.endswith(" from"):
+ continue # ignore for branching
+# print "eek! file %s was not branched from but instead: %s" % (depotPath, branchAction)
+# sys.exit(1);
+
+ source = log["file0,0"]
+ if source.startswith(branchPrefix):
+ continue
+
+ lastSourceRev = log["erev0,0"]
+ sourceLog = p4CmdList("filelog -m 1 \"%s%s\"" % (source, lastSourceRev))
+ if len(sourceLog) != 1:
+ print "eek! I got confused by the source filelog of %s%s" % (source, lastSourceRev)
+ sys.exit(1);
+ sourceLog = sourceLog[0]
+
+ relPath = source[len(globalPrefix):]
+ # strip off the filename
+ relPath = relPath[0:relPath.rfind("/")]
+
+ for candidate in knownBranches:
+ if isSubPathOf(relPath, candidate) and candidate != branch:
+ return candidate
+
+ return ""
+
+def changeIsBranchMerge(sourceBranch, destinationBranch, change):
+ sourceFiles = {}
+ for file in p4CmdList("files %s...@%s" % (globalPrefix + sourceBranch + "/", change)):
+ if file["action"] == "delete":
+ continue
+ sourceFiles[file["depotFile"]] = file
+
+ destinationFiles = {}
+ for file in p4CmdList("files %s...@%s" % (globalPrefix + destinationBranch + "/", change)):
+ destinationFiles[file["depotFile"]] = file
+
+ for fileName in sourceFiles.keys():
+ integrations = []
+ deleted = False
+ integrationCount = 0
+ for integration in p4CmdList("integrated \"%s\"" % fileName):
+ toFile = integration["fromFile"] # yes, it's true, it's fromFile
+ if not toFile in destinationFiles:
+ continue
+ destFile = destinationFiles[toFile]
+ if destFile["action"] == "delete":
+# print "file %s has been deleted in %s" % (fileName, toFile)
+ deleted = True
+ break
+ integrationCount += 1
+ if integration["how"] == "branch from":
+ continue
+
+ if int(integration["change"]) == change:
+ integrations.append(integration)
+ continue
+ if int(integration["change"]) > change:
+ continue
+
+ destRev = int(destFile["rev"])
+
+ startRev = integration["startFromRev"][1:]
+ if startRev == "none":
+ startRev = 0
+ else:
+ startRev = int(startRev)
+
+ endRev = integration["endFromRev"][1:]
+ if endRev == "none":
+ endRev = 0
+ else:
+ endRev = int(endRev)
+
+ initialBranch = (destRev == 1 and integration["how"] != "branch into")
+ inRange = (destRev >= startRev and destRev <= endRev)
+ newer = (destRev > startRev and destRev > endRev)
+
+ if initialBranch or inRange or newer:
+ integrations.append(integration)
+
+ if deleted:
+ continue
+
+ if len(integrations) == 0 and integrationCount > 1:
+ print "file %s was not integrated from %s into %s" % (fileName, sourceBranch, destinationBranch)
+ return False
+
+ return True
def getUserMap():
users = {}
try:
sout, sin, serr = popen2.popen3("git-name-rev --tags `git-rev-parse %s`" % branch)
output = sout.read()
+ if output.endswith("\n"):
+ output = output[:-1]
tagIdx = output.index(" tags/p4/")
- caretIdx = output.index("^")
- rev = int(output[tagIdx + 9 : caretIdx]) + 1
+ caretIdx = output.find("^")
+ endPos = len(output)
+ if caretIdx != -1:
+ endPos = caretIdx
+ rev = int(output[tagIdx + 9 : endPos]) + 1
changeRange = "@%s,#head" % rev
initialParent = os.popen("git-rev-parse %s" % branch).read()[:-1]
+ initialTag = "p4/%s" % (int(rev) - 1)
except:
pass
-sys.stderr.write("\n")
-
tz = - time.timezone / 36
tzsign = ("%s" % tz)[0]
if tzsign != '+' and tzsign != '-':
tz = "+" + ("%s" % tz)
+gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
+
if len(revision) > 0:
- print "Doing initial import of %s from revision %s" % (prefix, revision)
+ print "Doing initial import of %s from revision %s" % (globalPrefix, revision)
details = { "user" : "git perforce import user", "time" : int(time.time()) }
- details["desc"] = "Initial import of %s from the state at revision %s" % (prefix, revision)
+ details["desc"] = "Initial import of %s from the state at revision %s" % (globalPrefix, revision)
details["change"] = revision
newestRevision = 0
fileCnt = 0
- for info in p4CmdList("files %s...%s" % (prefix, revision)):
+ for info in p4CmdList("files %s...%s" % (globalPrefix, revision)):
change = int(info["change"])
if change > newestRevision:
newestRevision = change
details["change"] = newestRevision
- gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
try:
- commit(details)
+ commit(details, extractFilesFromCommit(details), branch, globalPrefix)
except:
print gitError.read()
- gitStream.close()
- gitOutput.close()
- gitError.close()
else:
- output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
-
changes = []
- for line in output:
- changeNum = line.split(" ")[1]
- changes.append(changeNum)
- changes.reverse()
+ if len(changesFile) > 0:
+ output = open(changesFile).readlines()
+ changeSet = Set()
+ for line in output:
+ changeSet.add(int(line))
+
+ for change in changeSet:
+ changes.append(change)
+
+ changes.sort()
+ else:
+ output = os.popen("p4 changes %s...%s" % (globalPrefix, changeRange)).readlines()
+
+ for line in output:
+ changeNum = line.split(" ")[1]
+ changes.append(changeNum)
+
+ changes.reverse()
if len(changes) == 0:
- print "no changes to import!"
+ if not silent:
+ print "no changes to import!"
sys.exit(1)
- gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
-
cnt = 1
for change in changes:
description = p4Cmd("describe %s" % change)
- sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
- sys.stdout.flush()
+ if not silent:
+ sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
+ sys.stdout.flush()
cnt = cnt + 1
try:
- commit(description)
- except:
+ files = extractFilesFromCommit(description)
+ if detectBranches:
+ for branch in branchesForCommit(files):
+ knownBranches.add(branch)
+ branchPrefix = globalPrefix + branch + "/"
+
+ filesForCommit = extractFilesInCommitToBranch(files, branchPrefix)
+
+ merged = ""
+ parent = ""
+ ########### remove cnt!!!
+ if branch not in createdBranches and cnt > 2:
+ createdBranches.add(branch)
+ parent = findBranchParent(branchPrefix, files)
+ if parent == branch:
+ parent = ""
+ # elif len(parent) > 0:
+ # print "%s branched off of %s" % (branch, parent)
+
+ if len(parent) == 0:
+ merged = findBranchSourceHeuristic(filesForCommit, branch, branchPrefix)
+ if len(merged) > 0:
+ print "change %s could be a merge from %s into %s" % (description["change"], merged, branch)
+ if not changeIsBranchMerge(merged, branch, int(description["change"])):
+ merged = ""
+
+ branch = "refs/heads/" + branch
+ if len(parent) > 0:
+ parent = "refs/heads/" + parent
+ if len(merged) > 0:
+ merged = "refs/heads/" + merged
+ commit(description, files, branch, branchPrefix, parent, merged)
+ else:
+ commit(description, files, branch, globalPrefix, initialParent)
+ initialParent = ""
+ except IOError:
print gitError.read()
sys.exit(1)
- gitStream.close()
- gitOutput.close()
- gitError.close()
+if not silent:
+ print ""
+
+gitStream.write("reset refs/tags/p4/%s\n" % lastChange)
+gitStream.write("from %s\n\n" % branch);
+
-print ""
+gitStream.close()
+gitOutput.close()
+gitError.close()
-os.popen("git-repo-config p4.depotpath %s" % prefix).read()
+os.popen("git-repo-config p4.depotpath %s" % globalPrefix).read()
+if len(initialTag) > 0:
+ os.popen("git tag -d %s" % initialTag).read()
sys.exit(0)