Merge branch 'maint'
[git] / contrib / fast-import / git-p4
1 #!/usr/bin/env python
2 #
3 # git-p4.py -- A tool for bidirectional operation between a Perforce depot and git.
4 #
5 # Author: Simon Hausmann <simon@lst.de>
6 # Copyright: 2007 Simon Hausmann <simon@lst.de>
7 #            2007 Trolltech ASA
8 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
9 #
10
11 import optparse, sys, os, marshal, popen2, subprocess, shelve
12 import tempfile, getopt, sha, os.path, time, platform
13 import re
14
15 from sets import Set;
16
17 verbose = False
18
19 def die(msg):
20     if verbose:
21         raise Exception(msg)
22     else:
23         sys.stderr.write(msg + "\n")
24         sys.exit(1)
25
26 def write_pipe(c, str):
27     if verbose:
28         sys.stderr.write('Writing pipe: %s\n' % c)
29
30     pipe = os.popen(c, 'w')
31     val = pipe.write(str)
32     if pipe.close():
33         die('Command failed: %s' % c)
34
35     return val
36
37 def read_pipe(c, ignore_error=False):
38     if verbose:
39         sys.stderr.write('Reading pipe: %s\n' % c)
40
41     pipe = os.popen(c, 'rb')
42     val = pipe.read()
43     if pipe.close() and not ignore_error:
44         die('Command failed: %s' % c)
45
46     return val
47
48
49 def read_pipe_lines(c):
50     if verbose:
51         sys.stderr.write('Reading pipe: %s\n' % c)
52     ## todo: check return status
53     pipe = os.popen(c, 'rb')
54     val = pipe.readlines()
55     if pipe.close():
56         die('Command failed: %s' % c)
57
58     return val
59
60 def system(cmd):
61     if verbose:
62         sys.stderr.write("executing %s\n" % cmd)
63     if os.system(cmd) != 0:
64         die("command failed: %s" % cmd)
65
66 def p4CmdList(cmd):
67     cmd = "p4 -G %s" % cmd
68     if verbose:
69         sys.stderr.write("Opening pipe: %s\n" % cmd)
70     pipe = os.popen(cmd, "rb")
71
72     result = []
73     try:
74         while True:
75             entry = marshal.load(pipe)
76             result.append(entry)
77     except EOFError:
78         pass
79     exitCode = pipe.close()
80     if exitCode != None:
81         entry = {}
82         entry["p4ExitCode"] = exitCode
83         result.append(entry)
84
85     return result
86
87 def p4Cmd(cmd):
88     list = p4CmdList(cmd)
89     result = {}
90     for entry in list:
91         result.update(entry)
92     return result;
93
94 def p4Where(depotPath):
95     if not depotPath.endswith("/"):
96         depotPath += "/"
97     output = p4Cmd("where %s..." % depotPath)
98     if output["code"] == "error":
99         return ""
100     clientPath = ""
101     if "path" in output:
102         clientPath = output.get("path")
103     elif "data" in output:
104         data = output.get("data")
105         lastSpace = data.rfind(" ")
106         clientPath = data[lastSpace + 1:]
107
108     if clientPath.endswith("..."):
109         clientPath = clientPath[:-3]
110     return clientPath
111
112 def currentGitBranch():
113     return read_pipe("git name-rev HEAD").split(" ")[1].strip()
114
115 def isValidGitDir(path):
116     if (os.path.exists(path + "/HEAD")
117         and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
118         return True;
119     return False
120
121 def parseRevision(ref):
122     return read_pipe("git rev-parse %s" % ref).strip()
123
124 def extractLogMessageFromGitCommit(commit):
125     logMessage = ""
126
127     ## fixme: title is first line of commit, not 1st paragraph.
128     foundTitle = False
129     for log in read_pipe_lines("git cat-file commit %s" % commit):
130        if not foundTitle:
131            if len(log) == 1:
132                foundTitle = True
133            continue
134
135        logMessage += log
136     return logMessage
137
138 def extractSettingsGitLog(log):
139     values = {}
140     for line in log.split("\n"):
141         line = line.strip()
142         m = re.search (r"^ *\[git-p4: (.*)\]$", line)
143         if not m:
144             continue
145
146         assignments = m.group(1).split (':')
147         for a in assignments:
148             vals = a.split ('=')
149             key = vals[0].strip()
150             val = ('='.join (vals[1:])).strip()
151             if val.endswith ('\"') and val.startswith('"'):
152                 val = val[1:-1]
153
154             values[key] = val
155
156     paths = values.get("depot-paths")
157     if not paths:
158         paths = values.get("depot-path")
159     if paths:
160         values['depot-paths'] = paths.split(',')
161     return values
162
163 def gitBranchExists(branch):
164     proc = subprocess.Popen(["git", "rev-parse", branch],
165                             stderr=subprocess.PIPE, stdout=subprocess.PIPE);
166     return proc.wait() == 0;
167
168 def gitConfig(key):
169     return read_pipe("git config %s" % key, ignore_error=True).strip()
170
171 def findUpstreamBranchPoint(head = "HEAD"):
172     settings = None
173     branchPoint = ""
174     parent = 0
175     while parent < 65535:
176         commit = head + "~%s" % parent
177         log = extractLogMessageFromGitCommit(commit)
178         settings = extractSettingsGitLog(log)
179         if not settings.has_key("depot-paths"):
180             parent = parent + 1
181             continue
182
183         names = read_pipe_lines("git name-rev \"--refs=refs/remotes/p4/*\" \"%s\"" % commit)
184         if len(names) <= 0:
185             continue
186
187         # strip away the beginning of 'HEAD~42 refs/remotes/p4/foo'
188         branchPoint = names[0].strip()[len(commit) + 1:]
189         break
190
191     return [branchPoint, settings]
192
193 class Command:
194     def __init__(self):
195         self.usage = "usage: %prog [options]"
196         self.needsGit = True
197
198 class P4Debug(Command):
199     def __init__(self):
200         Command.__init__(self)
201         self.options = [
202             optparse.make_option("--verbose", dest="verbose", action="store_true",
203                                  default=False),
204             ]
205         self.description = "A tool to debug the output of p4 -G."
206         self.needsGit = False
207         self.verbose = False
208
209     def run(self, args):
210         j = 0
211         for output in p4CmdList(" ".join(args)):
212             print 'Element: %d' % j
213             j += 1
214             print output
215         return True
216
217 class P4RollBack(Command):
218     def __init__(self):
219         Command.__init__(self)
220         self.options = [
221             optparse.make_option("--verbose", dest="verbose", action="store_true"),
222             optparse.make_option("--local", dest="rollbackLocalBranches", action="store_true")
223         ]
224         self.description = "A tool to debug the multi-branch import. Don't use :)"
225         self.verbose = False
226         self.rollbackLocalBranches = False
227
228     def run(self, args):
229         if len(args) != 1:
230             return False
231         maxChange = int(args[0])
232
233         if "p4ExitCode" in p4Cmd("changes -m 1"):
234             die("Problems executing p4");
235
236         if self.rollbackLocalBranches:
237             refPrefix = "refs/heads/"
238             lines = read_pipe_lines("git rev-parse --symbolic --branches")
239         else:
240             refPrefix = "refs/remotes/"
241             lines = read_pipe_lines("git rev-parse --symbolic --remotes")
242
243         for line in lines:
244             if self.rollbackLocalBranches or (line.startswith("p4/") and line != "p4/HEAD\n"):
245                 line = line.strip()
246                 ref = refPrefix + line
247                 log = extractLogMessageFromGitCommit(ref)
248                 settings = extractSettingsGitLog(log)
249
250                 depotPaths = settings['depot-paths']
251                 change = settings['change']
252
253                 changed = False
254
255                 if len(p4Cmd("changes -m 1 "  + ' '.join (['%s...@%s' % (p, maxChange)
256                                                            for p in depotPaths]))) == 0:
257                     print "Branch %s did not exist at change %s, deleting." % (ref, maxChange)
258                     system("git update-ref -d %s `git rev-parse %s`" % (ref, ref))
259                     continue
260
261                 while change and int(change) > maxChange:
262                     changed = True
263                     if self.verbose:
264                         print "%s is at %s ; rewinding towards %s" % (ref, change, maxChange)
265                     system("git update-ref %s \"%s^\"" % (ref, ref))
266                     log = extractLogMessageFromGitCommit(ref)
267                     settings =  extractSettingsGitLog(log)
268
269
270                     depotPaths = settings['depot-paths']
271                     change = settings['change']
272
273                 if changed:
274                     print "%s rewound to %s" % (ref, change)
275
276         return True
277
278 class P4Submit(Command):
279     def __init__(self):
280         Command.__init__(self)
281         self.options = [
282                 optparse.make_option("--continue", action="store_false", dest="firstTime"),
283                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
284                 optparse.make_option("--origin", dest="origin"),
285                 optparse.make_option("--reset", action="store_true", dest="reset"),
286                 optparse.make_option("--log-substitutions", dest="substFile"),
287                 optparse.make_option("--dry-run", action="store_true"),
288                 optparse.make_option("--direct", dest="directSubmit", action="store_true"),
289                 optparse.make_option("--trust-me-like-a-fool", dest="trustMeLikeAFool", action="store_true"),
290         ]
291         self.description = "Submit changes from git to the perforce depot."
292         self.usage += " [name of git branch to submit into perforce depot]"
293         self.firstTime = True
294         self.reset = False
295         self.interactive = True
296         self.dryRun = False
297         self.substFile = ""
298         self.firstTime = True
299         self.origin = ""
300         self.directSubmit = False
301         self.trustMeLikeAFool = False
302         self.verbose = False
303         self.isWindows = (platform.system() == "Windows")
304
305         self.logSubstitutions = {}
306         self.logSubstitutions["<enter description here>"] = "%log%"
307         self.logSubstitutions["\tDetails:"] = "\tDetails:  %log%"
308
309     def check(self):
310         if len(p4CmdList("opened ...")) > 0:
311             die("You have files opened with perforce! Close them before starting the sync.")
312
313     def start(self):
314         if len(self.config) > 0 and not self.reset:
315             die("Cannot start sync. Previous sync config found at %s\n"
316                 "If you want to start submitting again from scratch "
317                 "maybe you want to call git-p4 submit --reset" % self.configFile)
318
319         commits = []
320         if self.directSubmit:
321             commits.append("0")
322         else:
323             for line in read_pipe_lines("git rev-list --no-merges %s..%s" % (self.origin, self.master)):
324                 commits.append(line.strip())
325             commits.reverse()
326
327         self.config["commits"] = commits
328
329     def prepareLogMessage(self, template, message):
330         result = ""
331
332         for line in template.split("\n"):
333             if line.startswith("#"):
334                 result += line + "\n"
335                 continue
336
337             substituted = False
338             for key in self.logSubstitutions.keys():
339                 if line.find(key) != -1:
340                     value = self.logSubstitutions[key]
341                     value = value.replace("%log%", message)
342                     if value != "@remove@":
343                         result += line.replace(key, value) + "\n"
344                     substituted = True
345                     break
346
347             if not substituted:
348                 result += line + "\n"
349
350         return result
351
352     def applyCommit(self, id):
353         if self.directSubmit:
354             print "Applying local change in working directory/index"
355             diff = self.diffStatus
356         else:
357             print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
358             diff = read_pipe_lines("git diff-tree -r --name-status \"%s^\" \"%s\"" % (id, id))
359         filesToAdd = set()
360         filesToDelete = set()
361         editedFiles = set()
362         for line in diff:
363             modifier = line[0]
364             path = line[1:].strip()
365             if modifier == "M":
366                 system("p4 edit \"%s\"" % path)
367                 editedFiles.add(path)
368             elif modifier == "A":
369                 filesToAdd.add(path)
370                 if path in filesToDelete:
371                     filesToDelete.remove(path)
372             elif modifier == "D":
373                 filesToDelete.add(path)
374                 if path in filesToAdd:
375                     filesToAdd.remove(path)
376             else:
377                 die("unknown modifier %s for %s" % (modifier, path))
378
379         if self.directSubmit:
380             diffcmd = "cat \"%s\"" % self.diffFile
381         else:
382             diffcmd = "git format-patch -k --stdout \"%s^\"..\"%s\"" % (id, id)
383         patchcmd = diffcmd + " | git apply "
384         tryPatchCmd = patchcmd + "--check -"
385         applyPatchCmd = patchcmd + "--check --apply -"
386
387         if os.system(tryPatchCmd) != 0:
388             print "Unfortunately applying the change failed!"
389             print "What do you want to do?"
390             response = "x"
391             while response != "s" and response != "a" and response != "w":
392                 response = raw_input("[s]kip this patch / [a]pply the patch forcibly "
393                                      "and with .rej files / [w]rite the patch to a file (patch.txt) ")
394             if response == "s":
395                 print "Skipping! Good luck with the next patches..."
396                 return
397             elif response == "a":
398                 os.system(applyPatchCmd)
399                 if len(filesToAdd) > 0:
400                     print "You may also want to call p4 add on the following files:"
401                     print " ".join(filesToAdd)
402                 if len(filesToDelete):
403                     print "The following files should be scheduled for deletion with p4 delete:"
404                     print " ".join(filesToDelete)
405                 die("Please resolve and submit the conflict manually and "
406                     + "continue afterwards with git-p4 submit --continue")
407             elif response == "w":
408                 system(diffcmd + " > patch.txt")
409                 print "Patch saved to patch.txt in %s !" % self.clientPath
410                 die("Please resolve and submit the conflict manually and "
411                     "continue afterwards with git-p4 submit --continue")
412
413         system(applyPatchCmd)
414
415         for f in filesToAdd:
416             system("p4 add \"%s\"" % f)
417         for f in filesToDelete:
418             system("p4 revert \"%s\"" % f)
419             system("p4 delete \"%s\"" % f)
420
421         logMessage = ""
422         if not self.directSubmit:
423             logMessage = extractLogMessageFromGitCommit(id)
424             logMessage = logMessage.replace("\n", "\n\t")
425             if self.isWindows:
426                 logMessage = logMessage.replace("\n", "\r\n")
427             logMessage = logMessage.strip()
428
429         template = read_pipe("p4 change -o")
430
431         if self.interactive:
432             submitTemplate = self.prepareLogMessage(template, logMessage)
433             diff = read_pipe("p4 diff -du ...")
434
435             for newFile in filesToAdd:
436                 diff += "==== new file ====\n"
437                 diff += "--- /dev/null\n"
438                 diff += "+++ %s\n" % newFile
439                 f = open(newFile, "r")
440                 for line in f.readlines():
441                     diff += "+" + line
442                 f.close()
443
444             separatorLine = "######## everything below this line is just the diff #######"
445             if platform.system() == "Windows":
446                 separatorLine += "\r"
447             separatorLine += "\n"
448
449             response = "e"
450             if self.trustMeLikeAFool:
451                 response = "y"
452
453             firstIteration = True
454             while response == "e":
455                 if not firstIteration:
456                     response = raw_input("Do you want to submit this change? [y]es/[e]dit/[n]o/[s]kip ")
457                 firstIteration = False
458                 if response == "e":
459                     [handle, fileName] = tempfile.mkstemp()
460                     tmpFile = os.fdopen(handle, "w+")
461                     tmpFile.write(submitTemplate + separatorLine + diff)
462                     tmpFile.close()
463                     defaultEditor = "vi"
464                     if platform.system() == "Windows":
465                         defaultEditor = "notepad"
466                     editor = os.environ.get("EDITOR", defaultEditor);
467                     system(editor + " " + fileName)
468                     tmpFile = open(fileName, "rb")
469                     message = tmpFile.read()
470                     tmpFile.close()
471                     os.remove(fileName)
472                     submitTemplate = message[:message.index(separatorLine)]
473                     if self.isWindows:
474                         submitTemplate = submitTemplate.replace("\r\n", "\n")
475
476             if response == "y" or response == "yes":
477                if self.dryRun:
478                    print submitTemplate
479                    raw_input("Press return to continue...")
480                else:
481                    if self.directSubmit:
482                        print "Submitting to git first"
483                        os.chdir(self.oldWorkingDirectory)
484                        write_pipe("git commit -a -F -", submitTemplate)
485                        os.chdir(self.clientPath)
486
487                    write_pipe("p4 submit -i", submitTemplate)
488             elif response == "s":
489                 for f in editedFiles:
490                     system("p4 revert \"%s\"" % f);
491                 for f in filesToAdd:
492                     system("p4 revert \"%s\"" % f);
493                     system("rm %s" %f)
494                 for f in filesToDelete:
495                     system("p4 delete \"%s\"" % f);
496                 return
497             else:
498                 print "Not submitting!"
499                 self.interactive = False
500         else:
501             fileName = "submit.txt"
502             file = open(fileName, "w+")
503             file.write(self.prepareLogMessage(template, logMessage))
504             file.close()
505             print ("Perforce submit template written as %s. "
506                    + "Please review/edit and then use p4 submit -i < %s to submit directly!"
507                    % (fileName, fileName))
508
509     def run(self, args):
510         if len(args) == 0:
511             self.master = currentGitBranch()
512             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
513                 die("Detecting current git branch failed!")
514         elif len(args) == 1:
515             self.master = args[0]
516         else:
517             return False
518
519         [upstream, settings] = findUpstreamBranchPoint()
520         depotPath = settings['depot-paths'][0]
521         if len(self.origin) == 0:
522             self.origin = upstream
523
524         if self.verbose:
525             print "Origin branch is " + self.origin
526
527         if len(depotPath) == 0:
528             print "Internal error: cannot locate perforce depot path from existing branches"
529             sys.exit(128)
530
531         self.clientPath = p4Where(depotPath)
532
533         if len(self.clientPath) == 0:
534             print "Error: Cannot locate perforce checkout of %s in client view" % depotPath
535             sys.exit(128)
536
537         print "Perforce checkout for depot path %s located at %s" % (depotPath, self.clientPath)
538         self.oldWorkingDirectory = os.getcwd()
539
540         if self.directSubmit:
541             self.diffStatus = read_pipe_lines("git diff -r --name-status HEAD")
542             if len(self.diffStatus) == 0:
543                 print "No changes in working directory to submit."
544                 return True
545             patch = read_pipe("git diff -p --binary --diff-filter=ACMRTUXB HEAD")
546             self.diffFile = self.gitdir + "/p4-git-diff"
547             f = open(self.diffFile, "wb")
548             f.write(patch)
549             f.close();
550
551         os.chdir(self.clientPath)
552         response = raw_input("Do you want to sync %s with p4 sync? [y]es/[n]o " % self.clientPath)
553         if response == "y" or response == "yes":
554             system("p4 sync ...")
555
556         if self.reset:
557             self.firstTime = True
558
559         if len(self.substFile) > 0:
560             for line in open(self.substFile, "r").readlines():
561                 tokens = line.strip().split("=")
562                 self.logSubstitutions[tokens[0]] = tokens[1]
563
564         self.check()
565         self.configFile = self.gitdir + "/p4-git-sync.cfg"
566         self.config = shelve.open(self.configFile, writeback=True)
567
568         if self.firstTime:
569             self.start()
570
571         commits = self.config.get("commits", [])
572
573         while len(commits) > 0:
574             self.firstTime = False
575             commit = commits[0]
576             commits = commits[1:]
577             self.config["commits"] = commits
578             self.applyCommit(commit)
579             if not self.interactive:
580                 break
581
582         self.config.close()
583
584         if self.directSubmit:
585             os.remove(self.diffFile)
586
587         if len(commits) == 0:
588             if self.firstTime:
589                 print "No changes found to apply between %s and current HEAD" % self.origin
590             else:
591                 print "All changes applied!"
592                 os.chdir(self.oldWorkingDirectory)
593                 response = raw_input("Do you want to sync from Perforce now using git-p4 rebase? [y]es/[n]o ")
594                 if response == "y" or response == "yes":
595                     rebase = P4Rebase()
596                     rebase.run([])
597             os.remove(self.configFile)
598
599         return True
600
601 class P4Sync(Command):
602     def __init__(self):
603         Command.__init__(self)
604         self.options = [
605                 optparse.make_option("--branch", dest="branch"),
606                 optparse.make_option("--detect-branches", dest="detectBranches", action="store_true"),
607                 optparse.make_option("--changesfile", dest="changesFile"),
608                 optparse.make_option("--silent", dest="silent", action="store_true"),
609                 optparse.make_option("--detect-labels", dest="detectLabels", action="store_true"),
610                 optparse.make_option("--verbose", dest="verbose", action="store_true"),
611                 optparse.make_option("--import-local", dest="importIntoRemotes", action="store_false",
612                                      help="Import into refs/heads/ , not refs/remotes"),
613                 optparse.make_option("--max-changes", dest="maxChanges"),
614                 optparse.make_option("--keep-path", dest="keepRepoPath", action='store_true',
615                                      help="Keep entire BRANCH/DIR/SUBDIR prefix during import")
616         ]
617         self.description = """Imports from Perforce into a git repository.\n
618     example:
619     //depot/my/project/ -- to import the current head
620     //depot/my/project/@all -- to import everything
621     //depot/my/project/@1,6 -- to import only from revision 1 to 6
622
623     (a ... is not needed in the path p4 specification, it's added implicitly)"""
624
625         self.usage += " //depot/path[@revRange]"
626         self.silent = False
627         self.createdBranches = Set()
628         self.committedChanges = Set()
629         self.branch = ""
630         self.detectBranches = False
631         self.detectLabels = False
632         self.changesFile = ""
633         self.syncWithOrigin = True
634         self.verbose = False
635         self.importIntoRemotes = True
636         self.maxChanges = ""
637         self.isWindows = (platform.system() == "Windows")
638         self.keepRepoPath = False
639         self.depotPaths = None
640         self.p4BranchesInGit = []
641
642         if gitConfig("git-p4.syncFromOrigin") == "false":
643             self.syncWithOrigin = False
644
645     def extractFilesFromCommit(self, commit):
646         files = []
647         fnum = 0
648         while commit.has_key("depotFile%s" % fnum):
649             path =  commit["depotFile%s" % fnum]
650
651             found = [p for p in self.depotPaths
652                      if path.startswith (p)]
653             if not found:
654                 fnum = fnum + 1
655                 continue
656
657             file = {}
658             file["path"] = path
659             file["rev"] = commit["rev%s" % fnum]
660             file["action"] = commit["action%s" % fnum]
661             file["type"] = commit["type%s" % fnum]
662             files.append(file)
663             fnum = fnum + 1
664         return files
665
666     def stripRepoPath(self, path, prefixes):
667         if self.keepRepoPath:
668             prefixes = [re.sub("^(//[^/]+/).*", r'\1', prefixes[0])]
669
670         for p in prefixes:
671             if path.startswith(p):
672                 path = path[len(p):]
673
674         return path
675
676     def splitFilesIntoBranches(self, commit):
677         branches = {}
678         fnum = 0
679         while commit.has_key("depotFile%s" % fnum):
680             path =  commit["depotFile%s" % fnum]
681             found = [p for p in self.depotPaths
682                      if path.startswith (p)]
683             if not found:
684                 fnum = fnum + 1
685                 continue
686
687             file = {}
688             file["path"] = path
689             file["rev"] = commit["rev%s" % fnum]
690             file["action"] = commit["action%s" % fnum]
691             file["type"] = commit["type%s" % fnum]
692             fnum = fnum + 1
693
694             relPath = self.stripRepoPath(path, self.depotPaths)
695
696             for branch in self.knownBranches.keys():
697
698                 # add a trailing slash so that a commit into qt/4.2foo doesn't end up in qt/4.2
699                 if relPath.startswith(branch + "/"):
700                     if branch not in branches:
701                         branches[branch] = []
702                     branches[branch].append(file)
703                     break
704
705         return branches
706
707     ## Should move this out, doesn't use SELF.
708     def readP4Files(self, files):
709         files = [f for f in files
710                  if f['action'] != 'delete']
711
712         if not files:
713             return
714
715         # We cannot put all the files on the command line
716         # OS have limitations on the max lenght of arguments
717         # POSIX says it's 4096 bytes, default for Linux seems to be 130 K.
718         # and all OS from the table below seems to be higher than POSIX.
719         # See http://www.in-ulm.de/~mascheck/various/argmax/
720         argmax = min(4000, os.sysconf('SC_ARG_MAX'))
721         chunk = ''
722         filedata = []
723         for i in xrange(len(files)):
724             f = files[i]
725             chunk += '"%s#%s" ' % (f['path'], f['rev'])
726             if len(chunk) > argmax or i == len(files)-1:
727                 data = p4CmdList('print %s' % chunk)
728                 if "p4ExitCode" in data[0]:
729                     die("Problems executing p4. Error: [%d]." % (data[0]['p4ExitCode']));
730                 filedata.extend(data)
731                 chunk = ''
732
733         j = 0;
734         contents = {}
735         while j < len(filedata):
736             stat = filedata[j]
737             j += 1
738             text = ''
739             while j < len(filedata) and filedata[j]['code'] in ('text',
740                                                                 'binary'):
741                 text += filedata[j]['data']
742                 j += 1
743
744
745             if not stat.has_key('depotFile'):
746                 sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
747                 continue
748
749             contents[stat['depotFile']] = text
750
751         for f in files:
752             assert not f.has_key('data')
753             f['data'] = contents[f['path']]
754
755     def commit(self, details, files, branch, branchPrefixes, parent = ""):
756         epoch = details["time"]
757         author = details["user"]
758
759         if self.verbose:
760             print "commit into %s" % branch
761
762         # start with reading files; if that fails, we should not
763         # create a commit.
764         new_files = []
765         for f in files:
766             if [p for p in branchPrefixes if f['path'].startswith(p)]:
767                 new_files.append (f)
768             else:
769                 sys.stderr.write("Ignoring file outside of prefix: %s\n" % path)
770         files = new_files
771         self.readP4Files(files)
772
773
774
775
776         self.gitStream.write("commit %s\n" % branch)
777 #        gitStream.write("mark :%s\n" % details["change"])
778         self.committedChanges.add(int(details["change"]))
779         committer = ""
780         if author not in self.users:
781             self.getUserMapFromPerforceServer()
782         if author in self.users:
783             committer = "%s %s %s" % (self.users[author], epoch, self.tz)
784         else:
785             committer = "%s <a@b> %s %s" % (author, epoch, self.tz)
786
787         self.gitStream.write("committer %s\n" % committer)
788
789         self.gitStream.write("data <<EOT\n")
790         self.gitStream.write(details["desc"])
791         self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
792                              % (','.join (branchPrefixes), details["change"]))
793         if len(details['options']) > 0:
794             self.gitStream.write(": options = %s" % details['options'])
795         self.gitStream.write("]\nEOT\n\n")
796
797         if len(parent) > 0:
798             if self.verbose:
799                 print "parent %s" % parent
800             self.gitStream.write("from %s\n" % parent)
801
802         for file in files:
803             if file["type"] == "apple":
804                 print "\nfile %s is a strange apple file that forks. Ignoring!" % file['path']
805                 continue
806
807             relPath = self.stripRepoPath(file['path'], branchPrefixes)
808             if file["action"] == "delete":
809                 self.gitStream.write("D %s\n" % relPath)
810             else:
811                 mode = 644
812                 if file["type"].startswith("x"):
813                     mode = 755
814
815                 data = file['data']
816
817                 if self.isWindows and file["type"].endswith("text"):
818                     data = data.replace("\r\n", "\n")
819
820                 self.gitStream.write("M %d inline %s\n" % (mode, relPath))
821                 self.gitStream.write("data %s\n" % len(data))
822                 self.gitStream.write(data)
823                 self.gitStream.write("\n")
824
825         self.gitStream.write("\n")
826
827         change = int(details["change"])
828
829         if self.labels.has_key(change):
830             label = self.labels[change]
831             labelDetails = label[0]
832             labelRevisions = label[1]
833             if self.verbose:
834                 print "Change %s is labelled %s" % (change, labelDetails)
835
836             files = p4CmdList("files " + ' '.join (["%s...@%s" % (p, change)
837                                                     for p in branchPrefixes]))
838
839             if len(files) == len(labelRevisions):
840
841                 cleanedFiles = {}
842                 for info in files:
843                     if info["action"] == "delete":
844                         continue
845                     cleanedFiles[info["depotFile"]] = info["rev"]
846
847                 if cleanedFiles == labelRevisions:
848                     self.gitStream.write("tag tag_%s\n" % labelDetails["label"])
849                     self.gitStream.write("from %s\n" % branch)
850
851                     owner = labelDetails["Owner"]
852                     tagger = ""
853                     if author in self.users:
854                         tagger = "%s %s %s" % (self.users[owner], epoch, self.tz)
855                     else:
856                         tagger = "%s <a@b> %s %s" % (owner, epoch, self.tz)
857                     self.gitStream.write("tagger %s\n" % tagger)
858                     self.gitStream.write("data <<EOT\n")
859                     self.gitStream.write(labelDetails["Description"])
860                     self.gitStream.write("EOT\n\n")
861
862                 else:
863                     if not self.silent:
864                         print ("Tag %s does not match with change %s: files do not match."
865                                % (labelDetails["label"], change))
866
867             else:
868                 if not self.silent:
869                     print ("Tag %s does not match with change %s: file count is different."
870                            % (labelDetails["label"], change))
871
872     def getUserCacheFilename(self):
873         return os.environ["HOME"] + "/.gitp4-usercache.txt"
874
875     def getUserMapFromPerforceServer(self):
876         if self.userMapFromPerforceServer:
877             return
878         self.users = {}
879
880         for output in p4CmdList("users"):
881             if not output.has_key("User"):
882                 continue
883             self.users[output["User"]] = output["FullName"] + " <" + output["Email"] + ">"
884
885
886         s = ''
887         for (key, val) in self.users.items():
888             s += "%s\t%s\n" % (key, val)
889
890         open(self.getUserCacheFilename(), "wb").write(s)
891         self.userMapFromPerforceServer = True
892
893     def loadUserMapFromCache(self):
894         self.users = {}
895         self.userMapFromPerforceServer = False
896         try:
897             cache = open(self.getUserCacheFilename(), "rb")
898             lines = cache.readlines()
899             cache.close()
900             for line in lines:
901                 entry = line.strip().split("\t")
902                 self.users[entry[0]] = entry[1]
903         except IOError:
904             self.getUserMapFromPerforceServer()
905
906     def getLabels(self):
907         self.labels = {}
908
909         l = p4CmdList("labels %s..." % ' '.join (self.depotPaths))
910         if len(l) > 0 and not self.silent:
911             print "Finding files belonging to labels in %s" % `self.depotPath`
912
913         for output in l:
914             label = output["label"]
915             revisions = {}
916             newestChange = 0
917             if self.verbose:
918                 print "Querying files for label %s" % label
919             for file in p4CmdList("files "
920                                   +  ' '.join (["%s...@%s" % (p, label)
921                                                 for p in self.depotPaths])):
922                 revisions[file["depotFile"]] = file["rev"]
923                 change = int(file["change"])
924                 if change > newestChange:
925                     newestChange = change
926
927             self.labels[newestChange] = [output, revisions]
928
929         if self.verbose:
930             print "Label changes: %s" % self.labels.keys()
931
932     def guessProjectName(self):
933         for p in self.depotPaths:
934             if p.endswith("/"):
935                 p = p[:-1]
936             p = p[p.strip().rfind("/") + 1:]
937             if not p.endswith("/"):
938                p += "/"
939             return p
940
941     def getBranchMapping(self):
942         lostAndFoundBranches = set()
943
944         for info in p4CmdList("branches"):
945             details = p4Cmd("branch -o %s" % info["branch"])
946             viewIdx = 0
947             while details.has_key("View%s" % viewIdx):
948                 paths = details["View%s" % viewIdx].split(" ")
949                 viewIdx = viewIdx + 1
950                 # require standard //depot/foo/... //depot/bar/... mapping
951                 if len(paths) != 2 or not paths[0].endswith("/...") or not paths[1].endswith("/..."):
952                     continue
953                 source = paths[0]
954                 destination = paths[1]
955                 ## HACK
956                 if source.startswith(self.depotPaths[0]) and destination.startswith(self.depotPaths[0]):
957                     source = source[len(self.depotPaths[0]):-4]
958                     destination = destination[len(self.depotPaths[0]):-4]
959
960                     if destination in self.knownBranches:
961                         if not self.silent:
962                             print "p4 branch %s defines a mapping from %s to %s" % (info["branch"], source, destination)
963                             print "but there exists another mapping from %s to %s already!" % (self.knownBranches[destination], destination)
964                         continue
965
966                     self.knownBranches[destination] = source
967
968                     lostAndFoundBranches.discard(destination)
969
970                     if source not in self.knownBranches:
971                         lostAndFoundBranches.add(source)
972
973
974         for branch in lostAndFoundBranches:
975             self.knownBranches[branch] = branch
976
977     def listExistingP4GitBranches(self):
978         self.p4BranchesInGit = []
979
980         cmdline = "git rev-parse --symbolic "
981         if self.importIntoRemotes:
982             cmdline += " --remotes"
983         else:
984             cmdline += " --branches"
985
986         for line in read_pipe_lines(cmdline):
987             line = line.strip()
988
989             ## only import to p4/
990             if not line.startswith('p4/') or line == "p4/HEAD":
991                 continue
992             branch = line
993
994             # strip off p4
995             branch = re.sub ("^p4/", "", line)
996
997             self.p4BranchesInGit.append(branch)
998             self.initialParents[self.refPrefix + branch] = parseRevision(line)
999
1000     def createOrUpdateBranchesFromOrigin(self):
1001         if not self.silent:
1002             print ("Creating/updating branch(es) in %s based on origin branch(es)"
1003                    % self.refPrefix)
1004
1005         originPrefix = "origin/p4/"
1006
1007         for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
1008             line = line.strip()
1009             if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
1010                 continue
1011
1012             headName = line[len(originPrefix):]
1013             remoteHead = self.refPrefix + headName
1014             originHead = line
1015
1016             original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
1017             if (not original.has_key('depot-paths')
1018                 or not original.has_key('change')):
1019                 continue
1020
1021             update = False
1022             if not gitBranchExists(remoteHead):
1023                 if self.verbose:
1024                     print "creating %s" % remoteHead
1025                 update = True
1026             else:
1027                 settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
1028                 if settings.has_key('change') > 0:
1029                     if settings['depot-paths'] == original['depot-paths']:
1030                         originP4Change = int(original['change'])
1031                         p4Change = int(settings['change'])
1032                         if originP4Change > p4Change:
1033                             print ("%s (%s) is newer than %s (%s). "
1034                                    "Updating p4 branch from origin."
1035                                    % (originHead, originP4Change,
1036                                       remoteHead, p4Change))
1037                             update = True
1038                     else:
1039                         print ("Ignoring: %s was imported from %s while "
1040                                "%s was imported from %s"
1041                                % (originHead, ','.join(original['depot-paths']),
1042                                   remoteHead, ','.join(settings['depot-paths'])))
1043
1044             if update:
1045                 system("git update-ref %s %s" % (remoteHead, originHead))
1046
1047     def updateOptionDict(self, d):
1048         option_keys = {}
1049         if self.keepRepoPath:
1050             option_keys['keepRepoPath'] = 1
1051
1052         d["options"] = ' '.join(sorted(option_keys.keys()))
1053
1054     def readOptions(self, d):
1055         self.keepRepoPath = (d.has_key('options')
1056                              and ('keepRepoPath' in d['options']))
1057
1058     def run(self, args):
1059         self.depotPaths = []
1060         self.changeRange = ""
1061         self.initialParent = ""
1062         self.previousDepotPaths = []
1063
1064         # map from branch depot path to parent branch
1065         self.knownBranches = {}
1066         self.initialParents = {}
1067         self.hasOrigin = gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
1068         if not self.syncWithOrigin:
1069             self.hasOrigin = False
1070
1071         if self.importIntoRemotes:
1072             self.refPrefix = "refs/remotes/p4/"
1073         else:
1074             self.refPrefix = "refs/heads/p4/"
1075
1076         if self.syncWithOrigin and self.hasOrigin:
1077             if not self.silent:
1078                 print "Syncing with origin first by calling git fetch origin"
1079             system("git fetch origin")
1080
1081         if len(self.branch) == 0:
1082             self.branch = self.refPrefix + "master"
1083             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
1084                 system("git update-ref %s refs/heads/p4" % self.branch)
1085                 system("git branch -D p4");
1086             # create it /after/ importing, when master exists
1087             if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes:
1088                 system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch))
1089
1090         # TODO: should always look at previous commits,
1091         # merge with previous imports, if possible.
1092         if args == []:
1093             if self.hasOrigin:
1094                 self.createOrUpdateBranchesFromOrigin()
1095             self.listExistingP4GitBranches()
1096
1097             if len(self.p4BranchesInGit) > 1:
1098                 if not self.silent:
1099                     print "Importing from/into multiple branches"
1100                 self.detectBranches = True
1101
1102             if self.verbose:
1103                 print "branches: %s" % self.p4BranchesInGit
1104
1105             p4Change = 0
1106             for branch in self.p4BranchesInGit:
1107                 logMsg =  extractLogMessageFromGitCommit(self.refPrefix + branch)
1108
1109                 settings = extractSettingsGitLog(logMsg)
1110
1111                 self.readOptions(settings)
1112                 if (settings.has_key('depot-paths')
1113                     and settings.has_key ('change')):
1114                     change = int(settings['change']) + 1
1115                     p4Change = max(p4Change, change)
1116
1117                     depotPaths = sorted(settings['depot-paths'])
1118                     if self.previousDepotPaths == []:
1119                         self.previousDepotPaths = depotPaths
1120                     else:
1121                         paths = []
1122                         for (prev, cur) in zip(self.previousDepotPaths, depotPaths):
1123                             for i in range(0, min(len(cur), len(prev))):
1124                                 if cur[i] <> prev[i]:
1125                                     i = i - 1
1126                                     break
1127
1128                             paths.append (cur[:i + 1])
1129
1130                         self.previousDepotPaths = paths
1131
1132             if p4Change > 0:
1133                 self.depotPaths = sorted(self.previousDepotPaths)
1134                 self.changeRange = "@%s,#head" % p4Change
1135                 if not self.detectBranches:
1136                     self.initialParent = parseRevision(self.branch)
1137                 if not self.silent and not self.detectBranches:
1138                     print "Performing incremental import into %s git branch" % self.branch
1139
1140         if not self.branch.startswith("refs/"):
1141             self.branch = "refs/heads/" + self.branch
1142
1143         if len(args) == 0 and self.depotPaths:
1144             if not self.silent:
1145                 print "Depot paths: %s" % ' '.join(self.depotPaths)
1146         else:
1147             if self.depotPaths and self.depotPaths != args:
1148                 print ("previous import used depot path %s and now %s was specified. "
1149                        "This doesn't work!" % (' '.join (self.depotPaths),
1150                                                ' '.join (args)))
1151                 sys.exit(1)
1152
1153             self.depotPaths = sorted(args)
1154
1155         self.revision = ""
1156         self.users = {}
1157
1158         newPaths = []
1159         for p in self.depotPaths:
1160             if p.find("@") != -1:
1161                 atIdx = p.index("@")
1162                 self.changeRange = p[atIdx:]
1163                 if self.changeRange == "@all":
1164                     self.changeRange = ""
1165                 elif ',' not in self.changeRange:
1166                     self.revision = self.changeRange
1167                     self.changeRange = ""
1168                 p = p[0:atIdx]
1169             elif p.find("#") != -1:
1170                 hashIdx = p.index("#")
1171                 self.revision = p[hashIdx:]
1172                 p = p[0:hashIdx]
1173             elif self.previousDepotPaths == []:
1174                 self.revision = "#head"
1175
1176             p = re.sub ("\.\.\.$", "", p)
1177             if not p.endswith("/"):
1178                 p += "/"
1179
1180             newPaths.append(p)
1181
1182         self.depotPaths = newPaths
1183
1184
1185         self.loadUserMapFromCache()
1186         self.labels = {}
1187         if self.detectLabels:
1188             self.getLabels();
1189
1190         if self.detectBranches:
1191             ## FIXME - what's a P4 projectName ?
1192             self.projectName = self.guessProjectName()
1193
1194             if not self.hasOrigin:
1195                 self.getBranchMapping();
1196             if self.verbose:
1197                 print "p4-git branches: %s" % self.p4BranchesInGit
1198                 print "initial parents: %s" % self.initialParents
1199             for b in self.p4BranchesInGit:
1200                 if b != "master":
1201
1202                     ## FIXME
1203                     b = b[len(self.projectName):]
1204                 self.createdBranches.add(b)
1205
1206         self.tz = "%+03d%02d" % (- time.timezone / 3600, ((- time.timezone % 3600) / 60))
1207
1208         importProcess = subprocess.Popen(["git", "fast-import"],
1209                                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
1210                                          stderr=subprocess.PIPE);
1211         self.gitOutput = importProcess.stdout
1212         self.gitStream = importProcess.stdin
1213         self.gitError = importProcess.stderr
1214
1215         if self.revision:
1216             print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
1217
1218             details = { "user" : "git perforce import user", "time" : int(time.time()) }
1219             details["desc"] = ("Initial import of %s from the state at revision %s"
1220                                % (' '.join(self.depotPaths), self.revision))
1221             details["change"] = self.revision
1222             newestRevision = 0
1223
1224             fileCnt = 0
1225             for info in p4CmdList("files "
1226                                   +  ' '.join(["%s...%s"
1227                                                % (p, self.revision)
1228                                                for p in self.depotPaths])):
1229
1230                 if info['code'] == 'error':
1231                     sys.stderr.write("p4 returned an error: %s\n"
1232                                      % info['data'])
1233                     sys.exit(1)
1234
1235
1236                 change = int(info["change"])
1237                 if change > newestRevision:
1238                     newestRevision = change
1239
1240                 if info["action"] == "delete":
1241                     # don't increase the file cnt, otherwise details["depotFile123"] will have gaps!
1242                     #fileCnt = fileCnt + 1
1243                     continue
1244
1245                 for prop in ["depotFile", "rev", "action", "type" ]:
1246                     details["%s%s" % (prop, fileCnt)] = info[prop]
1247
1248                 fileCnt = fileCnt + 1
1249
1250             details["change"] = newestRevision
1251             self.updateOptionDict(details)
1252             try:
1253                 self.commit(details, self.extractFilesFromCommit(details), self.branch, self.depotPaths)
1254             except IOError:
1255                 print "IO error with git fast-import. Is your git version recent enough?"
1256                 print self.gitError.read()
1257
1258         else:
1259             changes = []
1260
1261             if len(self.changesFile) > 0:
1262                 output = open(self.changesFile).readlines()
1263                 changeSet = Set()
1264                 for line in output:
1265                     changeSet.add(int(line))
1266
1267                 for change in changeSet:
1268                     changes.append(change)
1269
1270                 changes.sort()
1271             else:
1272                 if self.verbose:
1273                     print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths),
1274                                                               self.changeRange)
1275                 assert self.depotPaths
1276                 output = read_pipe_lines("p4 changes " + ' '.join (["%s...%s" % (p, self.changeRange)
1277                                                                     for p in self.depotPaths]))
1278
1279                 for line in output:
1280                     changeNum = line.split(" ")[1]
1281                     changes.append(changeNum)
1282
1283                 changes.reverse()
1284
1285                 if len(self.maxChanges) > 0:
1286                     changes = changes[0:min(int(self.maxChanges), len(changes))]
1287
1288             if len(changes) == 0:
1289                 if not self.silent:
1290                     print "No changes to import!"
1291                 return True
1292
1293             if not self.silent and not self.detectBranches:
1294                 print "Import destination: %s" % self.branch
1295
1296             self.updatedBranches = set()
1297
1298             cnt = 1
1299             for change in changes:
1300                 description = p4Cmd("describe %s" % change)
1301                 self.updateOptionDict(description)
1302
1303                 if not self.silent:
1304                     sys.stdout.write("\rImporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
1305                     sys.stdout.flush()
1306                 cnt = cnt + 1
1307
1308                 try:
1309                     if self.detectBranches:
1310                         branches = self.splitFilesIntoBranches(description)
1311                         for branch in branches.keys():
1312                             ## HACK  --hwn
1313                             branchPrefix = self.depotPaths[0] + branch + "/"
1314
1315                             parent = ""
1316
1317                             filesForCommit = branches[branch]
1318
1319                             if self.verbose:
1320                                 print "branch is %s" % branch
1321
1322                             self.updatedBranches.add(branch)
1323
1324                             if branch not in self.createdBranches:
1325                                 self.createdBranches.add(branch)
1326                                 parent = self.knownBranches[branch]
1327                                 if parent == branch:
1328                                     parent = ""
1329                                 elif self.verbose:
1330                                     print "parent determined through known branches: %s" % parent
1331
1332                             # main branch? use master
1333                             if branch == "main":
1334                                 branch = "master"
1335                             else:
1336
1337                                 ## FIXME
1338                                 branch = self.projectName + branch
1339
1340                             if parent == "main":
1341                                 parent = "master"
1342                             elif len(parent) > 0:
1343                                 ## FIXME
1344                                 parent = self.projectName + parent
1345
1346                             branch = self.refPrefix + branch
1347                             if len(parent) > 0:
1348                                 parent = self.refPrefix + parent
1349
1350                             if self.verbose:
1351                                 print "looking for initial parent for %s; current parent is %s" % (branch, parent)
1352
1353                             if len(parent) == 0 and branch in self.initialParents:
1354                                 parent = self.initialParents[branch]
1355                                 del self.initialParents[branch]
1356
1357                             self.commit(description, filesForCommit, branch, [branchPrefix], parent)
1358                     else:
1359                         files = self.extractFilesFromCommit(description)
1360                         self.commit(description, files, self.branch, self.depotPaths,
1361                                     self.initialParent)
1362                         self.initialParent = ""
1363                 except IOError:
1364                     print self.gitError.read()
1365                     sys.exit(1)
1366
1367             if not self.silent:
1368                 print ""
1369                 if len(self.updatedBranches) > 0:
1370                     sys.stdout.write("Updated branches: ")
1371                     for b in self.updatedBranches:
1372                         sys.stdout.write("%s " % b)
1373                     sys.stdout.write("\n")
1374
1375
1376         self.gitStream.close()
1377         if importProcess.wait() != 0:
1378             die("fast-import failed: %s" % self.gitError.read())
1379         self.gitOutput.close()
1380         self.gitError.close()
1381
1382         return True
1383
1384 class P4Rebase(Command):
1385     def __init__(self):
1386         Command.__init__(self)
1387         self.options = [ ]
1388         self.description = ("Fetches the latest revision from perforce and "
1389                             + "rebases the current work (branch) against it")
1390         self.verbose = False
1391
1392     def run(self, args):
1393         sync = P4Sync()
1394         sync.run([])
1395
1396         [upstream, settings] = findUpstreamBranchPoint()
1397         if len(upstream) == 0:
1398             die("Cannot find upstream branchpoint for rebase")
1399
1400         # the branchpoint may be p4/foo~3, so strip off the parent
1401         upstream = re.sub("~[0-9]+$", "", upstream)
1402
1403         print "Rebasing the current branch onto %s" % upstream
1404         oldHead = read_pipe("git rev-parse HEAD").strip()
1405         system("git rebase %s" % upstream)
1406         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
1407         return True
1408
1409 class P4Clone(P4Sync):
1410     def __init__(self):
1411         P4Sync.__init__(self)
1412         self.description = "Creates a new git repository and imports from Perforce into it"
1413         self.usage = "usage: %prog [options] //depot/path[@revRange]"
1414         self.options.append(
1415             optparse.make_option("--destination", dest="cloneDestination",
1416                                  action='store', default=None,
1417                                  help="where to leave result of the clone"))
1418         self.cloneDestination = None
1419         self.needsGit = False
1420
1421     def defaultDestination(self, args):
1422         ## TODO: use common prefix of args?
1423         depotPath = args[0]
1424         depotDir = re.sub("(@[^@]*)$", "", depotPath)
1425         depotDir = re.sub("(#[^#]*)$", "", depotDir)
1426         depotDir = re.sub(r"\.\.\.$,", "", depotDir)
1427         depotDir = re.sub(r"/$", "", depotDir)
1428         return os.path.split(depotDir)[1]
1429
1430     def run(self, args):
1431         if len(args) < 1:
1432             return False
1433
1434         if self.keepRepoPath and not self.cloneDestination:
1435             sys.stderr.write("Must specify destination for --keep-path\n")
1436             sys.exit(1)
1437
1438         depotPaths = args
1439
1440         if not self.cloneDestination and len(depotPaths) > 1:
1441             self.cloneDestination = depotPaths[-1]
1442             depotPaths = depotPaths[:-1]
1443
1444         for p in depotPaths:
1445             if not p.startswith("//"):
1446                 return False
1447
1448         if not self.cloneDestination:
1449             self.cloneDestination = self.defaultDestination(args)
1450
1451         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
1452         if not os.path.exists(self.cloneDestination):
1453             os.makedirs(self.cloneDestination)
1454         os.chdir(self.cloneDestination)
1455         system("git init")
1456         self.gitdir = os.getcwd() + "/.git"
1457         if not P4Sync.run(self, depotPaths):
1458             return False
1459         if self.branch != "master":
1460             if gitBranchExists("refs/remotes/p4/master"):
1461                 system("git branch master refs/remotes/p4/master")
1462                 system("git checkout -f")
1463             else:
1464                 print "Could not detect main branch. No checkout/master branch created."
1465
1466         return True
1467
1468 class P4Branches(Command):
1469     def __init__(self):
1470         Command.__init__(self)
1471         self.options = [ ]
1472         self.description = ("Shows the git branches that hold imports and their "
1473                             + "corresponding perforce depot paths")
1474         self.verbose = False
1475
1476     def run(self, args):
1477         cmdline = "git rev-parse --symbolic "
1478         cmdline += " --remotes"
1479
1480         for line in read_pipe_lines(cmdline):
1481             line = line.strip()
1482
1483             if not line.startswith('p4/') or line == "p4/HEAD":
1484                 continue
1485             branch = line
1486
1487             log = extractLogMessageFromGitCommit("refs/remotes/%s" % branch)
1488             settings = extractSettingsGitLog(log)
1489
1490             print "%s <= %s (%s)" % (branch, ",".join(settings["depot-paths"]), settings["change"])
1491         return True
1492
1493 class HelpFormatter(optparse.IndentedHelpFormatter):
1494     def __init__(self):
1495         optparse.IndentedHelpFormatter.__init__(self)
1496
1497     def format_description(self, description):
1498         if description:
1499             return description + "\n"
1500         else:
1501             return ""
1502
1503 def printUsage(commands):
1504     print "usage: %s <command> [options]" % sys.argv[0]
1505     print ""
1506     print "valid commands: %s" % ", ".join(commands)
1507     print ""
1508     print "Try %s <command> --help for command specific help." % sys.argv[0]
1509     print ""
1510
1511 commands = {
1512     "debug" : P4Debug,
1513     "submit" : P4Submit,
1514     "sync" : P4Sync,
1515     "rebase" : P4Rebase,
1516     "clone" : P4Clone,
1517     "rollback" : P4RollBack,
1518     "branches" : P4Branches
1519 }
1520
1521
1522 def main():
1523     if len(sys.argv[1:]) == 0:
1524         printUsage(commands.keys())
1525         sys.exit(2)
1526
1527     cmd = ""
1528     cmdName = sys.argv[1]
1529     try:
1530         klass = commands[cmdName]
1531         cmd = klass()
1532     except KeyError:
1533         print "unknown command %s" % cmdName
1534         print ""
1535         printUsage(commands.keys())
1536         sys.exit(2)
1537
1538     options = cmd.options
1539     cmd.gitdir = os.environ.get("GIT_DIR", None)
1540
1541     args = sys.argv[2:]
1542
1543     if len(options) > 0:
1544         options.append(optparse.make_option("--git-dir", dest="gitdir"))
1545
1546         parser = optparse.OptionParser(cmd.usage.replace("%prog", "%prog " + cmdName),
1547                                        options,
1548                                        description = cmd.description,
1549                                        formatter = HelpFormatter())
1550
1551         (cmd, args) = parser.parse_args(sys.argv[2:], cmd);
1552     global verbose
1553     verbose = cmd.verbose
1554     if cmd.needsGit:
1555         if cmd.gitdir == None:
1556             cmd.gitdir = os.path.abspath(".git")
1557             if not isValidGitDir(cmd.gitdir):
1558                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
1559                 if os.path.exists(cmd.gitdir):
1560                     cdup = read_pipe("git rev-parse --show-cdup").strip()
1561                     if len(cdup) > 0:
1562                         os.chdir(cdup);
1563
1564         if not isValidGitDir(cmd.gitdir):
1565             if isValidGitDir(cmd.gitdir + "/.git"):
1566                 cmd.gitdir += "/.git"
1567             else:
1568                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
1569
1570         os.environ["GIT_DIR"] = cmd.gitdir
1571
1572     if not cmd.run(args):
1573         parser.print_help()
1574
1575
1576 if __name__ == '__main__':
1577     main()