315 lines
8.6 KiB
Python
Executable File
315 lines
8.6 KiB
Python
Executable File
#!/usr/bin/python
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#
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# p4-fast-export.py
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#
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# Author: Simon Hausmann <hausmann@kde.org>
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# License: MIT <http://www.opensource.org/licenses/mit-license.php>
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#
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# TODO:
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# - support integrations (at least p4i)
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# - support p4 submit (hah!)
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#
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import os, string, sys, time
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import marshal, popen2, getopt
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branch = "refs/heads/master"
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prefix = previousDepotPath = os.popen("git-repo-config --get p4.depotpath").read()
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detectBranches = False
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if len(prefix) != 0:
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prefix = prefix[:-1]
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try:
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opts, args = getopt.getopt(sys.argv[1:], "", [ "branch=", "detect-branches" ])
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except getopt.GetoptError:
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print "fixme, syntax error"
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sys.exit(1)
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for o, a in opts:
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if o == "--branch":
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branch = "refs/heads/" + a
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elif o == "--detect-branches":
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detectBranches = True
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if len(args) == 0 and len(prefix) != 0:
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print "[using previously specified depot path %s]" % prefix
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elif len(args) != 1:
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print "usage: %s //depot/path[@revRange]" % sys.argv[0]
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print "\n example:"
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print " %s //depot/my/project/ -- to import the current head"
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print " %s //depot/my/project/@all -- to import everything"
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print " %s //depot/my/project/@1,6 -- to import only from revision 1 to 6"
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print ""
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print " (a ... is not needed in the path p4 specification, it's added implicitly)"
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print ""
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sys.exit(1)
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else:
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if len(prefix) != 0 and prefix != args[0]:
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print "previous import used depot path %s and now %s was specified. this doesn't work!" % (prefix, args[0])
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sys.exit(1)
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prefix = args[0]
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changeRange = ""
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revision = ""
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users = {}
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initialParent = ""
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lastChange = ""
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initialTag = ""
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if prefix.find("@") != -1:
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atIdx = prefix.index("@")
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changeRange = prefix[atIdx:]
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if changeRange == "@all":
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changeRange = ""
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elif changeRange.find(",") == -1:
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revision = changeRange
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changeRange = ""
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prefix = prefix[0:atIdx]
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elif prefix.find("#") != -1:
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hashIdx = prefix.index("#")
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revision = prefix[hashIdx:]
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prefix = prefix[0:hashIdx]
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elif len(previousDepotPath) == 0:
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revision = "#head"
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if prefix.endswith("..."):
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prefix = prefix[:-3]
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if not prefix.endswith("/"):
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prefix += "/"
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def p4CmdList(cmd):
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pipe = os.popen("p4 -G %s" % cmd, "rb")
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result = []
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try:
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while True:
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entry = marshal.load(pipe)
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result.append(entry)
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except EOFError:
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pass
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pipe.close()
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return result
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def p4Cmd(cmd):
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list = p4CmdList(cmd)
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result = {}
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for entry in list:
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result.update(entry)
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return result;
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def extractFilesFromCommit(commit):
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files = []
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fnum = 0
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while commit.has_key("depotFile%s" % fnum):
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path = commit["depotFile%s" % fnum]
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if not path.startswith(prefix):
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print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, prefix, change)
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continue
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file = {}
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file["path"] = path
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file["rev"] = commit["rev%s" % fnum]
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file["action"] = commit["action%s" % fnum]
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file["type"] = commit["type%s" % fnum]
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files.append(file)
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fnum = fnum + 1
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return files
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def branchesForCommit(files):
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branches = set()
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for file in files:
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relativePath = file["path"][len(prefix):]
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# strip off the filename
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relativePath = relativePath[0:relativePath.rfind("/")]
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if len(branches) == 0:
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branches.add(relativePath)
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continue
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###### this needs more testing :)
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knownBranch = False
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for branch in branches:
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if relativePath == branch:
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knownBranch = True
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break
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if relativePath.startswith(branch):
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knownBranch = True
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break
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if branch.startswith(relativePath):
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branches.remove(branch)
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break
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if not knownBranch:
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branches.add(relativePath)
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return branches
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def commit(details, files, branch, prefix):
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global initialParent
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global users
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global lastChange
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epoch = details["time"]
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author = details["user"]
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gitStream.write("commit %s\n" % branch)
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committer = ""
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if author in users:
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committer = "%s %s %s" % (users[author], epoch, tz)
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else:
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committer = "%s <a@b> %s %s" % (author, epoch, tz)
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gitStream.write("committer %s\n" % committer)
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gitStream.write("data <<EOT\n")
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gitStream.write(details["desc"])
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gitStream.write("\n[ imported from %s; change %s ]\n" % (prefix, details["change"]))
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gitStream.write("EOT\n\n")
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if len(initialParent) > 0:
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gitStream.write("from %s\n" % initialParent)
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initialParent = ""
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for file in files:
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path = file["path"]
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rev = file["rev"]
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depotPath = path + "#" + rev
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relPath = path[len(prefix):]
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action = file["action"]
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if action == "delete":
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gitStream.write("D %s\n" % relPath)
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else:
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mode = 644
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if file["type"].startswith("x"):
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mode = 755
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data = os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
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gitStream.write("M %s inline %s\n" % (mode, relPath))
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gitStream.write("data %s\n" % len(data))
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gitStream.write(data)
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gitStream.write("\n")
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gitStream.write("\n")
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lastChange = details["change"]
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def getUserMap():
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users = {}
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for output in p4CmdList("users"):
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if not output.has_key("User"):
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continue
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users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
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return users
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users = getUserMap()
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if len(changeRange) == 0:
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try:
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sout, sin, serr = popen2.popen3("git-name-rev --tags `git-rev-parse %s`" % branch)
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output = sout.read()
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if output.endswith("\n"):
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output = output[:-1]
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tagIdx = output.index(" tags/p4/")
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caretIdx = output.find("^")
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endPos = len(output)
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if caretIdx != -1:
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endPos = caretIdx
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rev = int(output[tagIdx + 9 : endPos]) + 1
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changeRange = "@%s,#head" % rev
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initialParent = os.popen("git-rev-parse %s" % branch).read()[:-1]
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initialTag = "p4/%s" % (int(rev) - 1)
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except:
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pass
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sys.stderr.write("\n")
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tz = - time.timezone / 36
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tzsign = ("%s" % tz)[0]
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if tzsign != '+' and tzsign != '-':
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tz = "+" + ("%s" % tz)
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gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
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if len(revision) > 0:
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print "Doing initial import of %s from revision %s" % (prefix, revision)
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details = { "user" : "git perforce import user", "time" : int(time.time()) }
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details["desc"] = "Initial import of %s from the state at revision %s" % (prefix, revision)
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details["change"] = revision
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newestRevision = 0
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fileCnt = 0
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for info in p4CmdList("files %s...%s" % (prefix, revision)):
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change = int(info["change"])
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if change > newestRevision:
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newestRevision = change
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if info["action"] == "delete":
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continue
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for prop in [ "depotFile", "rev", "action", "type" ]:
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details["%s%s" % (prop, fileCnt)] = info[prop]
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fileCnt = fileCnt + 1
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details["change"] = newestRevision
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try:
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commit(details, extractFilesFromCommit(details), branch, prefix)
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except:
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print gitError.read()
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else:
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output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
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changes = []
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for line in output:
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changeNum = line.split(" ")[1]
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changes.append(changeNum)
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changes.reverse()
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if len(changes) == 0:
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print "no changes to import!"
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sys.exit(1)
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cnt = 1
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for change in changes:
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description = p4Cmd("describe %s" % change)
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sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
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sys.stdout.flush()
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cnt = cnt + 1
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try:
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files = extractFilesFromCommit(description)
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if detectBranches:
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for branch in branchesForCommit(files):
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branchPrefix = prefix + branch + "/"
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branch = "refs/heads/" + branch
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commit(description, files, branch, branchPrefix)
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else:
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commit(description, files, branch, prefix)
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except:
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print gitError.read()
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sys.exit(1)
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print ""
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gitStream.write("reset refs/tags/p4/%s\n" % lastChange)
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gitStream.write("from %s\n\n" % branch);
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gitStream.close()
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gitOutput.close()
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gitError.close()
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os.popen("git-repo-config p4.depotpath %s" % prefix).read()
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if len(initialTag) > 0:
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os.popen("git tag -d %s" % initialTag).read()
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sys.exit(0)
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