git-p4 fails when cloning a p4 depo.
[gitweb.git] / contrib / fast-import / git-p4
index ececc445183160fe77217d3aae924b5315671508..d1f8d3b78d12c95e580750c3c0b02d54865f5da5 100755 (executable)
@@ -156,7 +156,8 @@ def extractSettingsGitLog(log):
     paths = values.get("depot-paths")
     if not paths:
         paths = values.get("depot-path")
-    values['depot-paths'] = paths.split(',')
+    if paths:
+        values['depot-paths'] = paths.split(',')
     return values
 
 def gitBranchExists(branch):
@@ -167,6 +168,28 @@ def gitBranchExists(branch):
 def gitConfig(key):
     return read_pipe("git config %s" % key, ignore_error=True).strip()
 
+def findUpstreamBranchPoint():
+    settings = None
+    branchPoint = ""
+    parent = 0
+    while parent < 65535:
+        commit = "HEAD~%s" % parent
+        log = extractLogMessageFromGitCommit(commit)
+        settings = extractSettingsGitLog(log)
+        if not settings.has_key("depot-paths"):
+            parent = parent + 1
+            continue
+
+        names = read_pipe_lines("git name-rev \"--refs=refs/remotes/p4/*\" \"%s\"" % commit)
+        if len(names) <= 0:
+            continue
+
+        # strip away the beginning of 'HEAD~42 refs/remotes/p4/foo'
+        branchPoint = names[0].strip()[len(commit) + 1:]
+        break
+
+    return [branchPoint, settings]
+
 class Command:
     def __init__(self):
         self.usage = "usage: %prog [options]"
@@ -276,6 +299,8 @@ class P4Submit(Command):
         self.origin = ""
         self.directSubmit = False
         self.trustMeLikeAFool = False
+        self.verbose = False
+        self.isWindows = (platform.system() == "Windows")
 
         self.logSubstitutions = {}
         self.logSubstitutions["<enter description here>"] = "%log%"
@@ -388,15 +413,17 @@ class P4Submit(Command):
         system(applyPatchCmd)
 
         for f in filesToAdd:
-            system("p4 add %s" % f)
+            system("p4 add \"%s\"" % f)
         for f in filesToDelete:
-            system("p4 revert %s" % f)
-            system("p4 delete %s" % f)
+            system("p4 revert \"%s\"" % f)
+            system("p4 delete \"%s\"" % f)
 
         logMessage = ""
         if not self.directSubmit:
             logMessage = extractLogMessageFromGitCommit(id)
             logMessage = logMessage.replace("\n", "\n\t")
+            if self.isWindows:
+                logMessage = logMessage.replace("\n", "\r\n")
             logMessage = logMessage.strip()
 
         template = read_pipe("p4 change -o")
@@ -443,6 +470,8 @@ class P4Submit(Command):
                     tmpFile.close()
                     os.remove(fileName)
                     submitTemplate = message[:message.index(separatorLine)]
+                    if self.isWindows:
+                        submitTemplate = submitTemplate.replace("\r\n", "\n")
 
             if response == "y" or response == "yes":
                if self.dryRun:
@@ -478,9 +507,6 @@ class P4Submit(Command):
                    % (fileName, fileName))
 
     def run(self, args):
-        # make gitdir absolute so we can cd out into the perforce checkout
-        os.environ["GIT_DIR"] = gitdir
-
         if len(args) == 0:
             self.master = currentGitBranch()
             if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
@@ -490,13 +516,13 @@ class P4Submit(Command):
         else:
             return False
 
-        depotPath = ""
-        settings = None
-        if gitBranchExists("p4"):
-            settings = extractSettingsGitLog(extractLogMessageFromGitCommit("p4"))
-        if len(depotPath) == 0 and gitBranchExists("origin"):
-            settings = extractSettingsGitLog(extractLogMessageFromGitCommit("origin"))
-        depotPaths = settings['depot-paths']
+        [upstream, settings] = findUpstreamBranchPoint()
+        depotPath = settings['depot-paths'][0]
+        if len(self.origin) == 0:
+            self.origin = upstream
+
+        if self.verbose:
+            print "Origin branch is " + self.origin
 
         if len(depotPath) == 0:
             print "Internal error: cannot locate perforce depot path from existing branches"
@@ -527,12 +553,6 @@ class P4Submit(Command):
         if response == "y" or response == "yes":
             system("p4 sync ...")
 
-        if len(self.origin) == 0:
-            if gitBranchExists("p4"):
-                self.origin = "p4"
-            else:
-                self.origin = "origin"
-
         if self.reset:
             self.firstTime = True
 
@@ -617,6 +637,7 @@ class P4Sync(Command):
         self.isWindows = (platform.system() == "Windows")
         self.keepRepoPath = False
         self.depotPaths = None
+        self.p4BranchesInGit = []
 
         if gitConfig("git-p4.syncFromOrigin") == "false":
             self.syncWithOrigin = False
@@ -690,9 +711,23 @@ class P4Sync(Command):
         if not files:
             return
 
-        filedata = p4CmdList('print %s' % ' '.join(['"%s#%s"' % (f['path'],
-                                                                 f['rev'])
-                                                    for f in files]))
+        # We cannot put all the files on the command line
+        # OS have limitations on the max lenght of arguments
+        # POSIX says it's 4096 bytes, default for Linux seems to be 130 K.
+        # and all OS from the table below seems to be higher than POSIX.
+        # See http://www.in-ulm.de/~mascheck/various/argmax/
+        argmax = min(4000, os.sysconf('SC_ARG_MAX'))
+        chunk = ''
+        filedata = []
+        for i in xrange(len(files)):
+            f = files[i]
+            chunk += '"%s#%s" ' % (f['path'], f['rev'])
+            if len(chunk) > argmax or i == len(files)-1:
+                data = p4CmdList('print %s' % chunk)
+                if "p4ExitCode" in data[0]:
+                    die("Problems executing p4. Error: [%d]." % (data[0]['p4ExitCode']));
+                filedata.extend(data)
+                chunk = ''
 
         j = 0;
         contents = {}
@@ -705,6 +740,11 @@ class P4Sync(Command):
                 text += filedata[j]['data']
                 j += 1
 
+
+            if not stat.has_key('depotFile'):
+                sys.stderr.write("p4 print fails with: %s\n" % repr(stat))
+                continue
+
             contents[stat['depotFile']] = text
 
         for f in files:
@@ -747,12 +787,11 @@ class P4Sync(Command):
 
         self.gitStream.write("data <<EOT\n")
         self.gitStream.write(details["desc"])
-        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s: "
-                             "options = %s]\n"
-                             % (','.join (branchPrefixes), details["change"],
-                                details['options']
-                                ))
-        self.gitStream.write("EOT\n\n")
+        self.gitStream.write("\n[git-p4: depot-paths = \"%s\": change = %s"
+                             % (','.join (branchPrefixes), details["change"]))
+        if len(details['options']) > 0:
+            self.gitStream.write(": options = %s" % details['options'])
+        self.gitStream.write("]\nEOT\n\n")
 
         if len(parent) > 0:
             if self.verbose:
@@ -891,13 +930,14 @@ class P4Sync(Command):
 
     def guessProjectName(self):
         for p in self.depotPaths:
-            return p [p.strip().rfind("/") + 1:]
+            if p.endswith("/"):
+                p = p[:-1]
+            p = p[p.strip().rfind("/") + 1:]
+            if not p.endswith("/"):
+               p += "/"
+            return p
 
     def getBranchMapping(self):
-
-        ## FIXME - what's a P4 projectName ?
-        self.projectName = self.guessProjectName()
-
         for info in p4CmdList("branches"):
             details = p4Cmd("branch -o %s" % info["branch"])
             viewIdx = 0
@@ -931,12 +971,12 @@ class P4Sync(Command):
             line = line.strip()
 
             ## only import to p4/
-            if not line.startswith('p4/'):
+            if not line.startswith('p4/') or line == "p4/HEAD":
                 continue
             branch = line
-            if self.importIntoRemotes:
-                # strip off p4
-                branch = re.sub ("^p4/", "", line)
+
+            # strip off p4
+            branch = re.sub ("^p4/", "", line)
 
             self.p4BranchesInGit.append(branch)
             self.initialParents[self.refPrefix + branch] = parseRevision(line)
@@ -946,14 +986,16 @@ class P4Sync(Command):
             print ("Creating/updating branch(es) in %s based on origin branch(es)"
                    % self.refPrefix)
 
+        originPrefix = "origin/p4/"
+
         for line in read_pipe_lines("git rev-parse --symbolic --remotes"):
             line = line.strip()
-            if (not line.startswith("origin/")) or line.endswith("HEAD\n"):
+            if (not line.startswith(originPrefix)) or line.endswith("HEAD"):
                 continue
 
-            headName = line[len("origin/"):]
+            headName = line[len(originPrefix):]
             remoteHead = self.refPrefix + headName
-            originHead = "origin/" + headName
+            originHead = line
 
             original = extractSettingsGitLog(extractLogMessageFromGitCommit(originHead))
             if (not original.has_key('depot-paths')
@@ -966,7 +1008,7 @@ class P4Sync(Command):
                     print "creating %s" % remoteHead
                 update = True
             else:
-                settings =  extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
+                settings = extractSettingsGitLog(extractLogMessageFromGitCommit(remoteHead))
                 if settings.has_key('change') > 0:
                     if settings['depot-paths'] == original['depot-paths']:
                         originP4Change = int(original['change'])
@@ -1006,12 +1048,14 @@ class P4Sync(Command):
         # map from branch depot path to parent branch
         self.knownBranches = {}
         self.initialParents = {}
-        self.hasOrigin = gitBranchExists("origin")
+        self.hasOrigin = gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
+        if not self.syncWithOrigin:
+            self.hasOrigin = False
 
         if self.importIntoRemotes:
             self.refPrefix = "refs/remotes/p4/"
         else:
-            self.refPrefix = "refs/heads/"
+            self.refPrefix = "refs/heads/p4/"
 
         if self.syncWithOrigin and self.hasOrigin:
             if not self.silent:
@@ -1019,7 +1063,7 @@ class P4Sync(Command):
             system("git fetch origin")
 
         if len(self.branch) == 0:
-            self.branch = self.refPrefix + "p4/master"
+            self.branch = self.refPrefix + "master"
             if gitBranchExists("refs/heads/p4") and self.importIntoRemotes:
                 system("git update-ref %s refs/heads/p4" % self.branch)
                 system("git branch -D p4");
@@ -1128,7 +1172,11 @@ class P4Sync(Command):
             self.getLabels();
 
         if self.detectBranches:
-            self.getBranchMapping();
+            ## FIXME - what's a P4 projectName ?
+            self.projectName = self.guessProjectName()
+
+            if not self.hasOrigin:
+                self.getBranchMapping();
             if self.verbose:
                 print "p4-git branches: %s" % self.p4BranchesInGit
                 print "initial parents: %s" % self.initialParents
@@ -1149,7 +1197,7 @@ class P4Sync(Command):
         self.gitError = importProcess.stderr
 
         if self.revision:
-            print "Doing initial import of %s from revision %s" % (' '.join(self.depotPaths), self.revision)
+            print "Doing initial import of %s from revision %s into %s" % (' '.join(self.depotPaths), self.revision, self.branch)
 
             details = { "user" : "git perforce import user", "time" : int(time.time()) }
             details["desc"] = ("Initial import of %s from the state at revision %s"
@@ -1226,6 +1274,9 @@ class P4Sync(Command):
                     print "No changes to import!"
                 return True
 
+            if not self.silent and not self.detectBranches:
+                print "Import destination: %s" % self.branch
+
             self.updatedBranches = set()
 
             cnt = 1
@@ -1287,7 +1338,7 @@ class P4Sync(Command):
                                 parent = self.initialParents[branch]
                                 del self.initialParents[branch]
 
-                            self.commit(description, filesForCommit, branch, branchPrefix, parent)
+                            self.commit(description, filesForCommit, branch, [branchPrefix], parent)
                     else:
                         files = self.extractFilesFromCommit(description)
                         self.commit(description, files, self.branch, self.depotPaths,
@@ -1320,13 +1371,22 @@ class P4Rebase(Command):
         self.options = [ ]
         self.description = ("Fetches the latest revision from perforce and "
                             + "rebases the current work (branch) against it")
+        self.verbose = False
 
     def run(self, args):
         sync = P4Sync()
         sync.run([])
-        print "Rebasing the current branch"
+
+        [upstream, settings] = findUpstreamBranchPoint()
+        if len(upstream) == 0:
+            die("Cannot find upstream branchpoint for rebase")
+
+        # the branchpoint may be p4/foo~3, so strip off the parent
+        upstream = re.sub("~[0-9]+$", "", upstream)
+
+        print "Rebasing the current branch onto %s" % upstream
         oldHead = read_pipe("git rev-parse HEAD").strip()
-        system("git rebase p4")
+        system("git rebase %s" % upstream)
         system("git diff-tree --stat --summary -M %s HEAD" % oldHead)
         return True
 
@@ -1360,15 +1420,21 @@ class P4Clone(P4Sync):
             sys.exit(1)
 
         depotPaths = args
+
+        if not self.cloneDestination and len(depotPaths) > 1:
+            self.cloneDestination = depotPaths[-1]
+            depotPaths = depotPaths[:-1]
+
         for p in depotPaths:
             if not p.startswith("//"):
                 return False
 
         if not self.cloneDestination:
-            self.cloneDestination = self.defaultDestination()
+            self.cloneDestination = self.defaultDestination(args)
 
         print "Importing from %s into %s" % (', '.join(depotPaths), self.cloneDestination)
-        os.makedirs(self.cloneDestination)
+        if not os.path.exists(self.cloneDestination):
+            os.makedirs(self.cloneDestination)
         os.chdir(self.cloneDestination)
         system("git init")
         self.gitdir = os.getcwd() + "/.git"