Andrew's git - gitweb.git/blob - contrib/fast-import/p4-fast-export.py

   1#!/usr/bin/python
   2#
   3# p4-fast-export.py
   4#
   5# Author: Simon Hausmann <hausmann@kde.org>
   6# License: MIT <http://www.opensource.org/licenses/mit-license.php>
   7#
   8# TODO:
   9#       - support integrations (at least p4i)
  10#       - support incremental imports
  11#       - create tags
  12#       - instead of reading all files into a variable try to pipe from
  13#       - support p4 submit (hah!)
  14#       - don't hardcode the import to master
  15#
  16import os, string, sys, time
  17import marshal, popen2
  18
  19if len(sys.argv) != 2:
  20    print "usage: %s //depot/path[@revRange]" % sys.argv[0]
  21    print "\n    example:"
  22    print "    %s //depot/my/project/ -- to import everything"
  23    print "    %s //depot/my/project/@1,6 -- to import only from revision 1 to 6"
  24    print ""
  25    print "    (a ... is not needed in the path p4 specification, it's added implicitly)"
  26    print ""
  27    sys.exit(1)
  28
  29prefix = sys.argv[1]
  30changeRange = ""
  31try:
  32    atIdx = prefix.index("@")
  33    changeRange = prefix[atIdx:]
  34    prefix = prefix[0:atIdx]
  35except ValueError:
  36    changeRange = ""
  37
  38if not prefix.endswith("/"):
  39    prefix += "/"
  40
  41def p4CmdList(cmd):
  42    pipe = os.popen("p4 -G %s" % cmd, "rb")
  43    result = []
  44    try:
  45        while True:
  46            entry = marshal.load(pipe)
  47            result.append(entry)
  48    except EOFError:
  49        pass
  50    pipe.close()
  51    return result
  52
  53def p4Cmd(cmd):
  54    list = p4CmdList(cmd)
  55    result = {}
  56    for entry in list:
  57        result.update(entry)
  58    return result;
  59
  60def getUserMap():
  61    users = {}
  62
  63    for output in p4CmdList("users"):
  64        if not output.has_key("User"):
  65            continue
  66        users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
  67    return users
  68
  69users = getUserMap()
  70
  71output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
  72
  73changes = []
  74for line in output:
  75    changeNum = line.split(" ")[1]
  76    changes.append(changeNum)
  77
  78changes.reverse()
  79
  80sys.stderr.write("\n")
  81
  82tz = - time.timezone / 36
  83
  84gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
  85
  86cnt = 1
  87for change in changes:
  88    description = p4Cmd("describe %s" % change)
  89
  90    sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
  91    cnt = cnt + 1
  92
  93    epoch = description["time"]
  94    author = description["user"]
  95
  96    gitStream.write("commit refs/heads/master\n")
  97    if author in users:
  98        gitStream.write("committer %s %s %s\n" % (users[author], epoch, tz))
  99    else:
 100        gitStream.write("committer %s <a@b> %s %s\n" % (author, epoch, tz))
 101    gitStream.write("data <<EOT\n")
 102    gitStream.write(description["desc"])
 103    gitStream.write("EOT\n\n")
 104
 105    fnum = 0
 106    while description.has_key("depotFile%s" % fnum):
 107        path = description["depotFile%s" % fnum]
 108        if not path.startswith(prefix):
 109            print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, prefix, change)
 110            fnum = fnum + 1
 111            continue
 112
 113        rev = description["rev%s" % fnum]
 114        depotPath = path + "#" + rev
 115        relPath = path[len(prefix):]
 116        action = description["action%s" % fnum]
 117
 118        if action == "delete":
 119            gitStream.write("D %s\n" % relPath)
 120        else:
 121            mode = 644
 122            if description["type%s" % fnum].startswith("x"):
 123                mode = 755
 124
 125            data = os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
 126
 127            gitStream.write("M %s inline %s\n" % (mode, relPath))
 128            gitStream.write("data %s\n" % len(data))
 129            gitStream.write(data)
 130            gitStream.write("\n")
 131
 132        fnum = fnum + 1
 133
 134    gitStream.write("\n")
 135
 136gitStream.close()
 137gitOutput.close()
 138gitError.close()
 139
 140print ""