From: Jeff King Date: Tue, 1 Dec 2015 22:21:29 +0000 (-0500) Subject: Merge branch 'ld/p4-detached-head' into maint X-Git-Tag: v2.6.4~11 X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/5b228f956a8f7ec5127adf9e9368220d7e5d9a5e?ds=inline;hp=-c Merge branch 'ld/p4-detached-head' into maint Make git-p4 work on a detached head. * ld/p4-detached-head: git-p4: work with a detached head git-p4: add option to system() to return subshell status git-p4: add failing test for submit from detached head --- 5b228f956a8f7ec5127adf9e9368220d7e5d9a5e diff --combined git-p4.py index 36c5c55b61,0cfc8668d6..4ea1553c6f --- a/git-p4.py +++ b/git-p4.py @@@ -134,11 -134,13 +134,11 @@@ def read_pipe(c, ignore_error=False) sys.stderr.write('Reading pipe: %s\n' % str(c)) expand = isinstance(c,basestring) - p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand) - pipe = p.stdout - val = pipe.read() - if p.wait() and not ignore_error: - die('Command failed: %s' % str(c)) - - return val + p = subprocess.Popen(c, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=expand) + (out, err) = p.communicate() + if p.returncode != 0 and not ignore_error: + die('Command failed: %s\nError: %s' % (str(c), err)) + return out def p4_read_pipe(c, ignore_error=False): real_cmd = p4_build_cmd(c) @@@ -190,14 -192,16 +190,16 @@@ def p4_has_move_command() # assume it failed because @... was invalid changelist return True - def system(cmd): + def system(cmd, ignore_error=False): expand = isinstance(cmd,basestring) if verbose: sys.stderr.write("executing %s\n" % str(cmd)) retcode = subprocess.call(cmd, shell=expand) - if retcode: + if retcode and not ignore_error: raise CalledProcessError(retcode, cmd) + return retcode + def p4_system(cmd): """Specifically invoke p4 as the system command. """ real_cmd = p4_build_cmd(cmd) @@@ -540,7 -544,12 +542,12 @@@ def p4Where(depotPath) return clientPath def currentGitBranch(): - return read_pipe("git name-rev HEAD").split(" ")[1].strip() + retcode = system(["git", "symbolic-ref", "-q", "HEAD"], ignore_error=True) + if retcode != 0: + # on a detached head + return None + else: + return read_pipe(["git", "name-rev", "HEAD"]).split(" ")[1].strip() def isValidGitDir(path): if (os.path.exists(path + "/HEAD") @@@ -1649,8 -1658,6 +1656,6 @@@ class P4Submit(Command, P4UserMap) def run(self, args): if len(args) == 0: self.master = currentGitBranch() - if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master): - die("Detecting current git branch failed!") elif len(args) == 1: self.master = args[0] if not branchExists(self.master): @@@ -1658,9 -1665,10 +1663,10 @@@ else: return False - allowSubmit = gitConfig("git-p4.allowSubmit") - if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","): - die("%s is not in git-p4.allowSubmit" % self.master) + if self.master: + allowSubmit = gitConfig("git-p4.allowSubmit") + if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","): + die("%s is not in git-p4.allowSubmit" % self.master) [upstream, settings] = findUpstreamBranchPoint() self.depotPath = settings['depot-paths'][0] @@@ -1728,7 -1736,12 +1734,12 @@@ self.check() commits = [] - for line in read_pipe_lines(["git", "rev-list", "--no-merges", "%s..%s" % (self.origin, self.master)]): + if self.master: + commitish = self.master + else: + commitish = 'HEAD' + + for line in read_pipe_lines(["git", "rev-list", "--no-merges", "%s..%s" % (self.origin, commitish)]): commits.append(line.strip()) commits.reverse() @@@ -2191,17 -2204,10 +2202,17 @@@ class P4Sync(Command, P4UserMap) # them back too. This is not needed to the cygwin windows version, # just the native "NT" type. # - text = p4_read_pipe(['print', '-q', '-o', '-', "%s@%s" % (file['depotFile'], file['change']) ]) - if p4_version_string().find("/NT") >= 0: - text = text.replace("\r\n", "\n") - contents = [ text ] + try: + text = p4_read_pipe(['print', '-q', '-o', '-', '%s@%s' % (file['depotFile'], file['change'])]) + except Exception as e: + if 'Translation of file content failed' in str(e): + type_base = 'binary' + else: + raise e + else: + if p4_version_string().find('/NT') >= 0: + text = text.replace('\r\n', '\n') + contents = [ text ] if type_base == "apple": # Apple filetype files will be streamed as a concatenation of @@@ -2334,11 -2340,8 +2345,11 @@@ else: return "%s " % userid - # Stream a p4 tag def streamTag(self, gitStream, labelName, labelDetails, commit, epoch): + """ Stream a p4 tag. + commit is either a git commit, or a fast-import mark, ":" + """ + if verbose: print "writing tag %s for commit %s" % (labelName, commit) gitStream.write("tag %s\n" % labelName) @@@ -2389,7 -2392,7 +2400,7 @@@ self.clientSpecDirs.update_client_spec_path_cache(files) self.gitStream.write("commit %s\n" % branch) -# gitStream.write("mark :%s\n" % details["change"]) + self.gitStream.write("mark :%s\n" % details["change"]) self.committedChanges.add(int(details["change"])) committer = "" if author not in self.users: @@@ -2508,19 -2511,13 +2519,19 @@@ if change.has_key('change'): # find the corresponding git commit; take the oldest commit changelist = int(change['change']) - gitCommit = read_pipe(["git", "rev-list", "--max-count=1", - "--reverse", ":/\[git-p4:.*change = %d\]" % changelist]) - if len(gitCommit) == 0: - print "could not find git commit for changelist %d" % changelist - else: - gitCommit = gitCommit.strip() + if changelist in self.committedChanges: + gitCommit = ":%d" % changelist # use a fast-import mark commitFound = True + else: + gitCommit = read_pipe(["git", "rev-list", "--max-count=1", + "--reverse", ":/\[git-p4:.*change = %d\]" % changelist], ignore_error=True) + if len(gitCommit) == 0: + print "importing label %s: could not find git commit for changelist %d" % (name, changelist) + else: + commitFound = True + gitCommit = gitCommit.strip() + + if commitFound: # Convert from p4 time format try: tmwhen = time.strptime(labelDetails['Update'], "%Y/%m/%d %H:%M:%S")