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 p4 submit (hah!)
11#
12import os, string, sys, time
13import marshal, popen2, getopt
14
15branch = "refs/heads/p4"
16prefix = previousDepotPath = os.popen("git-repo-config --get p4.depotpath").read()
17if len(prefix) != 0:
18 prefix = prefix[:-1]
19
20try:
21 opts, args = getopt.getopt(sys.argv[1:], "", [ "branch=" ])
22except getopt.GetoptError:
23 print "fixme, syntax error"
24 sys.exit(1)
25
26for o, a in opts:
27 if o == "--branch":
28 branch = "refs/heads/" + a
29
30if len(args) == 0 and len(prefix) != 0:
31 print "[using previously specified depot path %s]" % prefix
32elif len(args) != 1:
33 print "usage: %s //depot/path[@revRange]" % sys.argv[0]
34 print "\n example:"
35 print " %s //depot/my/project/ -- to import the current head"
36 print " %s //depot/my/project/@all -- to import everything"
37 print " %s //depot/my/project/@1,6 -- to import only from revision 1 to 6"
38 print ""
39 print " (a ... is not needed in the path p4 specification, it's added implicitly)"
40 print ""
41 sys.exit(1)
42else:
43 if len(prefix) != 0 and prefix != args[0]:
44 print "previous import used depot path %s and now %s was specified. this doesn't work!" % (prefix, args[0])
45 sys.exit(1)
46 prefix = args[0]
47
48changeRange = ""
49revision = ""
50users = {}
51initialParent = ""
52
53if prefix.find("@") != -1:
54 atIdx = prefix.index("@")
55 changeRange = prefix[atIdx:]
56 if changeRange == "@all":
57 changeRange = ""
58 elif changeRange.find(",") == -1:
59 revision = changeRange
60 changeRange = ""
61 prefix = prefix[0:atIdx]
62elif prefix.find("#") != -1:
63 hashIdx = prefix.index("#")
64 revision = prefix[hashIdx:]
65 prefix = prefix[0:hashIdx]
66elif len(previousDepotPath) == 0:
67 revision = "#head"
68
69if prefix.endswith("..."):
70 prefix = prefix[:-3]
71
72if not prefix.endswith("/"):
73 prefix += "/"
74
75def p4CmdList(cmd):
76 pipe = os.popen("p4 -G %s" % cmd, "rb")
77 result = []
78 try:
79 while True:
80 entry = marshal.load(pipe)
81 result.append(entry)
82 except EOFError:
83 pass
84 pipe.close()
85 return result
86
87def p4Cmd(cmd):
88 list = p4CmdList(cmd)
89 result = {}
90 for entry in list:
91 result.update(entry)
92 return result;
93
94def commit(details):
95 global initialParent
96 global users
97
98 epoch = details["time"]
99 author = details["user"]
100
101 gitStream.write("commit %s\n" % branch)
102 committer = ""
103 if author in users:
104 committer = "%s %s %s" % (users[author], epoch, tz)
105 else:
106 committer = "%s <a@b> %s %s" % (author, epoch, tz)
107
108 gitStream.write("committer %s\n" % committer)
109
110 gitStream.write("data <<EOT\n")
111 gitStream.write(details["desc"])
112 gitStream.write("\n[ imported from %s; change %s ]\n" % (prefix, details["change"]))
113 gitStream.write("EOT\n\n")
114
115 if len(initialParent) > 0:
116 gitStream.write("from %s\n" % initialParent)
117 initialParent = ""
118
119 fnum = 0
120 while details.has_key("depotFile%s" % fnum):
121 path = details["depotFile%s" % fnum]
122 if not path.startswith(prefix):
123 print "\nchanged files: ignoring path %s outside of %s in change %s" % (path, prefix, change)
124 fnum = fnum + 1
125 continue
126
127 rev = details["rev%s" % fnum]
128 depotPath = path + "#" + rev
129 relPath = path[len(prefix):]
130 action = details["action%s" % fnum]
131
132 if action == "delete":
133 gitStream.write("D %s\n" % relPath)
134 else:
135 mode = 644
136 if details["type%s" % fnum].startswith("x"):
137 mode = 755
138
139 data = os.popen("p4 print -q \"%s\"" % depotPath, "rb").read()
140
141 gitStream.write("M %s inline %s\n" % (mode, relPath))
142 gitStream.write("data %s\n" % len(data))
143 gitStream.write(data)
144 gitStream.write("\n")
145
146 fnum = fnum + 1
147
148 gitStream.write("\n")
149
150 gitStream.write("tag p4/%s\n" % details["change"])
151 gitStream.write("from %s\n" % branch);
152 gitStream.write("tagger %s\n" % committer);
153 gitStream.write("data 0\n\n")
154
155
156def getUserMap():
157 users = {}
158
159 for output in p4CmdList("users"):
160 if not output.has_key("User"):
161 continue
162 users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
163 return users
164
165users = getUserMap()
166
167if len(changeRange) == 0:
168 try:
169 sout, sin, serr = popen2.popen3("git-name-rev --tags `git-rev-parse %s`" % branch)
170 output = sout.read()
171 tagIdx = output.index(" tags/p4/")
172 caretIdx = output.index("^")
173 rev = int(output[tagIdx + 9 : caretIdx]) + 1
174 changeRange = "@%s,#head" % rev
175 initialParent = os.popen("git-rev-parse %s" % branch).read()[:-1]
176 except:
177 pass
178
179sys.stderr.write("\n")
180
181tz = - time.timezone / 36
182tzsign = ("%s" % tz)[0]
183if tzsign != '+' and tzsign != '-':
184 tz = "+" + ("%s" % tz)
185
186if len(revision) > 0:
187 print "Doing initial import of %s from revision %s" % (prefix, revision)
188
189 details = { "user" : "git perforce import user", "time" : int(time.time()) }
190 details["desc"] = "Initial import of %s from the state at revision %s" % (prefix, revision)
191 details["change"] = revision
192 newestRevision = 0
193
194 fileCnt = 0
195 for info in p4CmdList("files %s...%s" % (prefix, revision)):
196 change = int(info["change"])
197 if change > newestRevision:
198 newestRevision = change
199
200 if info["action"] == "delete":
201 continue
202
203 for prop in [ "depotFile", "rev", "action", "type" ]:
204 details["%s%s" % (prop, fileCnt)] = info[prop]
205
206 fileCnt = fileCnt + 1
207
208 details["change"] = newestRevision
209
210 gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
211 try:
212 commit(details)
213 except:
214 print gitError.read()
215
216 gitStream.close()
217 gitOutput.close()
218 gitError.close()
219else:
220 output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
221
222 changes = []
223 for line in output:
224 changeNum = line.split(" ")[1]
225 changes.append(changeNum)
226
227 changes.reverse()
228
229 if len(changes) == 0:
230 print "no changes to import!"
231 sys.exit(1)
232
233 gitOutput, gitStream, gitError = popen2.popen3("git-fast-import")
234
235 cnt = 1
236 for change in changes:
237 description = p4Cmd("describe %s" % change)
238
239 sys.stdout.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
240 sys.stdout.flush()
241 cnt = cnt + 1
242
243 try:
244 commit(description)
245 except:
246 print gitError.read()
247 sys.exit(1)
248
249 gitStream.close()
250 gitOutput.close()
251 gitError.close()
252
253print ""
254
255os.popen("git-repo-config p4.depotpath %s" % prefix).read()
256
257sys.exit(0)