Andrew's git - gitweb.git/blob

238f6e352403b43b627ebdb580f3277dfe089640
   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: - fix date parsing (how hard can it be?)
   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#       - p4 print directly to stdout. need to figure out file size somehow
  14#         though.
  15#       - support p4 submit (hah!)
  16#       - don't hardcode the import to master
  17#
  18import os, string, sys
  19
  20# yep, that's hardcoded right. will fix to a commandline option rsn :)
  21prefix = "//depot/qt/main/"
  22# that's in revision range syntax, for example @2342,523634
  23changeRange = ""
  24
  25def describe(change):
  26    output = os.popen("p4 describe %s" % change).readlines()
  27
  28    firstLine = output[0]
  29
  30    author = firstLine.split(" ")[3]
  31    author = author[:author.find("@")]
  32
  33    filesSection = 0
  34    try:
  35        filesSection = output.index("Affected files ...\n")
  36    except ValueError:
  37        sys.stderr.write("Change %s doesn't seem to affect any files. Weird.\n" % change)
  38        return [], [], [], []
  39
  40    differencesSection = 0
  41    try:
  42        differencesSection = output.index("Differences ...\n")
  43    except ValueError:
  44        sys.stderr.write("Change %s doesn't seem to have a differences section. Weird.\n" % change)
  45        return [], [], [], []
  46
  47    log = output[2:filesSection - 1]
  48
  49    lines = output[filesSection + 2:differencesSection - 1]
  50
  51    changed = []
  52    removed = []
  53
  54    for line in lines:
  55        # chop off "... " and trailing newline
  56        line = line[4:len(line) - 1]
  57
  58        lastSpace = line.rfind(" ")
  59        if lastSpace == -1:
  60            sys.stderr.write("trouble parsing line %s, skipping!\n" % line)
  61            continue
  62
  63        operation = line[lastSpace + 1:]
  64        path = line[:lastSpace]
  65
  66        if operation == "delete":
  67            removed.append(path)
  68        else:
  69            changed.append(path)
  70
  71    return author, log, changed, removed
  72
  73def p4cat(path):
  74    return os.popen("p4 print -q \"%s\"" % path).read()
  75
  76def stripRevision(path):
  77    hashPos = path.rindex("#")
  78    return path[:hashPos]
  79
  80def getUserMap():
  81    users = {}
  82    output = os.popen("p4 users")
  83    for line in output:
  84        firstSpace = line.index(" ")
  85        secondSpace = line.index(" ", firstSpace + 1)
  86        key = line[:firstSpace]
  87        email = line[firstSpace + 1:secondSpace]
  88        openParenPos = line.index("(", secondSpace)
  89        closedParenPos = line.index(")", openParenPos)
  90        name = line[openParenPos + 1:closedParenPos]
  91
  92        users[key] = name + " " + email
  93
  94    return users
  95
  96
  97users = getUserMap()
  98
  99output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
 100
 101changes = []
 102for line in output:
 103    changeNum = line.split(" ")[1]
 104    changes.append(changeNum)
 105
 106changes.reverse()
 107
 108sys.stderr.write("\n")
 109
 110cnt = 0
 111for change in changes:
 112    [ author, log, changedFiles, removedFiles ] = describe(change)
 113    sys.stderr.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
 114    cnt = cnt + 1
 115#    sys.stderr.write("%s\n" % log)
 116#    sys.stderr.write("%s\n" % changedFiles)
 117#    sys.stderr.write("%s\n" % removedFiles)
 118
 119    print "commit refs/heads/master"
 120    if author in users:
 121        print "committer %s 1 2" % users[author]
 122    else:
 123        print "committer %s <a@b> 1 2" % author
 124    print "data <<EOT"
 125    for l in log:
 126        print l[:len(l) - 1]
 127    print "EOT"
 128
 129    print ""
 130
 131    for f in changedFiles:
 132        if not f.startswith(prefix):
 133            sys.stderr.write("\nchanged files: ignoring path %s outside of %s in change %s\n" % (f, prefix, change))
 134            continue
 135        relpath = f[len(prefix):]
 136        print "M 644 inline %s" % stripRevision(relpath)
 137        data = p4cat(f)
 138        print "data %s" % len(data)
 139        sys.stdout.write(data)
 140        print ""
 141
 142    for f in removedFiles:
 143        if not f.startswith(prefix):
 144            sys.stderr.write("\ndeleted files: ignoring path %s outside of %s in change %s\n" % (f, prefix, change))
 145            continue
 146        relpath = f[len(prefix):]
 147        print "D %s" % stripRevision(relpath)
 148
 149    print ""
 150