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 #
  16 import os, string, sys, time
  17
  18 if len(sys.argv) != 2:
  19     sys.stderr.write("usage: %s //depot/path[@revRange]\n" % sys.argv[0]);
  20     sys.stderr.write("\n    example:\n");
  21     sys.stderr.write("    %s //depot/my/project/ -- to import everything\n");
  22     sys.stderr.write("    %s //depot/my/project/@1,6 -- to import only from revision 1 to 6\n");
  23     sys.stderr.write("\n");
  24     sys.stderr.write("    (a ... is not needed in the path p4 specification, it's added implicitly)\n");
  25     sys.stderr.write("\n");
  26     sys.exit(1)
  27
  28 prefix = sys.argv[1]
  29 changeRange = ""
  30 try:
  31     atIdx = prefix.index("@")
  32     changeRange = prefix[atIdx:]
  33     prefix = prefix[0:atIdx]
  34 except ValueError:
  35     changeRange = ""
  36
  37 if not prefix.endswith("/"):
  38     prefix += "/"
  39
  40 def describe(change):
  41     output = os.popen("p4 describe %s" % change).readlines()
  42
  43     firstLine = output[0]
  44
  45     splitted = firstLine.split(" ")
  46     author = splitted[3]
  47     author = author[:author.find("@")]
  48     tm = time.strptime(splitted[5] + " " + splitted[6], "%Y/%m/%d %H:%M:%S ")
  49     epoch = int(time.mktime(tm))
  50
  51     filesSection = 0
  52     try:
  53         filesSection = output.index("Affected files ...\n")
  54     except ValueError:
  55         sys.stderr.write("Change %s doesn't seem to affect any files. Weird.\n" % change)
  56         return [], [], [], [], []
  57
  58     differencesSection = 0
  59     try:
  60         differencesSection = output.index("Differences ...\n")
  61     except ValueError:
  62         sys.stderr.write("Change %s doesn't seem to have a differences section. Weird.\n" % change)
  63         return [], [], [], [], []
  64
  65     log = output[2:filesSection - 1]
  66
  67     lines = output[filesSection + 2:differencesSection - 1]
  68
  69     changed = []
  70     removed = []
  71
  72     for line in lines:
  73         # chop off "... " and trailing newline
  74         line = line[4:len(line) - 1]
  75
  76         lastSpace = line.rfind(" ")
  77         if lastSpace == -1:
  78             sys.stderr.write("trouble parsing line %s, skipping!\n" % line)
  79             continue
  80
  81         operation = line[lastSpace + 1:]
  82         path = line[:lastSpace]
  83
  84         if operation == "delete":
  85             removed.append(path)
  86         else:
  87             changed.append(path)
  88
  89     return author, log, epoch, changed, removed
  90
  91 def p4cat(path):
  92     return os.popen("p4 print -q \"%s\"" % path).read()
  93
  94 def p4Stat(path):
  95     output = os.popen("p4 fstat -Ol \"%s\"" % path).readlines()
  96     fileSize = 0
  97     mode = 644
  98     for line in output:
  99         if line.startswith("... headType x"):
 100             mode = 755
 101         elif line.startswith("... fileSize "):
 102             fileSize = long(line[12:])
 103     return mode, fileSize
 104
 105 def stripRevision(path):
 106     hashPos = path.rindex("#")
 107     return path[:hashPos]
 108
 109 def getUserMap():
 110     users = {}
 111     output = os.popen("p4 users")
 112     for line in output:
 113         firstSpace = line.index(" ")
 114         secondSpace = line.index(" ", firstSpace + 1)
 115         key = line[:firstSpace]
 116         email = line[firstSpace + 1:secondSpace]
 117         openParenPos = line.index("(", secondSpace)
 118         closedParenPos = line.index(")", openParenPos)
 119         name = line[openParenPos + 1:closedParenPos]
 120
 121         users[key] = name + " " + email
 122
 123     return users
 124
 125 users = getUserMap()
 126
 127 output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
 128
 129 changes = []
 130 for line in output:
 131     changeNum = line.split(" ")[1]
 132     changes.append(changeNum)
 133
 134 changes.reverse()
 135
 136 sys.stderr.write("\n")
 137
 138 tz = - time.timezone / 36
 139
 140 cnt = 1
 141 for change in changes:
 142     [ author, log, epoch, changedFiles, removedFiles ] = describe(change)
 143     sys.stderr.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 144     cnt = cnt + 1
 145
 146     print "commit refs/heads/master"
 147     if author in users:
 148         print "committer %s %s %s" % (users[author], epoch, tz)
 149     else:
 150         print "committer %s <a@b> %s %s" % (author, epoch, tz)
 151     print "data <<EOT"
 152     for l in log:
 153         print l[:len(l) - 1]
 154     print "EOT"
 155
 156     print ""
 157
 158     for f in changedFiles:
 159         if not f.startswith(prefix):
 160             sys.stderr.write("\nchanged files: ignoring path %s outside of %s in change %s\n" % (f, prefix, change))
 161             continue
 162         relpath = f[len(prefix):]
 163
 164         [mode, fileSize] = p4Stat(f)
 165
 166         print "M %s inline %s" % (mode, stripRevision(relpath))
 167         print "data %s" % fileSize
 168         sys.stdout.flush();
 169         os.system("p4 print -q \"%s\"" % f)
 170         print ""
 171
 172     for f in removedFiles:
 173         if not f.startswith(prefix):
 174             sys.stderr.write("\ndeleted files: ignoring path %s outside of %s in change %s\n" % (f, prefix, change))
 175             continue
 176         relpath = f[len(prefix):]
 177         print "D %s" % stripRevision(relpath)
 178
 179     print ""
 180
 181 sys.stderr.write("\n")
 182