diff options
Diffstat (limited to 'git-p4.py')
| -rwxr-xr-x | git-p4.py | 29 |
1 files changed, 27 insertions, 2 deletions
@@ -579,6 +579,17 @@ def p4BranchesInGit(branchesAreInRemotes=True): return branches +def branch_exists(branch): + """Make sure that the given ref name really exists.""" + + cmd = [ "git", "rev-parse", "--symbolic", "--verify", branch ] + p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) + out, _ = p.communicate() + if p.returncode: + return False + # expect exactly one line of output: the branch name + return out.rstrip() == branch + def findUpstreamBranchPoint(head = "HEAD"): branches = p4BranchesInGit() # map from depot-path to branch name @@ -2768,6 +2779,7 @@ class P4Sync(Command, P4UserMap): print 'Syncing with origin first, using "git fetch origin"' system("git fetch origin") + branch_arg_given = bool(self.branch) if len(self.branch) == 0: self.branch = self.refPrefix + "master" if gitBranchExists("refs/heads/p4") and self.importIntoRemotes: @@ -2961,8 +2973,21 @@ class P4Sync(Command, P4UserMap): else: # catch "git p4 sync" with no new branches, in a repo that # does not have any existing p4 branches - if len(args) == 0 and not self.p4BranchesInGit: - die("No remote p4 branches. Perhaps you never did \"git p4 clone\" in here."); + if len(args) == 0: + if not self.p4BranchesInGit: + die("No remote p4 branches. Perhaps you never did \"git p4 clone\" in here.") + + # The default branch is master, unless --branch is used to + # specify something else. Make sure it exists, or complain + # nicely about how to use --branch. + if not self.detectBranches: + if not branch_exists(self.branch): + if branch_arg_given: + die("Error: branch %s does not exist." % self.branch) + else: + die("Error: no branch %s; perhaps specify one with --branch." % + self.branch) + if self.verbose: print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths), self.changeRange) |