If --branch was used to build a repository with no
refs/remotes/p4/master, future syncs will not know
which branch to sync. Notice this situation and
print a helpful error message.
Signed-off-by: Pete Wyckoff <pw@xxxxxxxx>
---
git-p4.py | 29 +++++++++++++++++++++++++++--
t/t9806-git-p4-options.sh | 9 ++++-----
2 files changed, 31 insertions(+), 7 deletions(-)
diff --git a/git-p4.py b/git-p4.py
index 9b07ddd..390d3f1 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -585,6 +585,17 @@ 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
@@ -2774,6 +2785,7 @@ 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:
@@ -2967,8 +2979,21 @@ 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)
diff --git a/t/t9806-git-p4-options.sh b/t/t9806-git-p4-options.sh
index c0d4433..a51f122 100755
--- a/t/t9806-git-p4-options.sh
+++ b/t/t9806-git-p4-options.sh
@@ -40,14 +40,13 @@ test_expect_success 'clone --branch should checkout master' '
)
'
-test_expect_failure 'sync when branch is not called master should work' '
- git p4 clone --branch=refs/remotes/p4/sb --dest="$git" //depot@2 &&
+test_expect_success 'sync when no master branch prints a nice error' '
test_when_finished cleanup_git &&
+ git p4 clone --branch=refs/remotes/p4/sb --dest="$git" //depot@2 &&
(
cd "$git" &&
- git p4 sync &&
- git show -s --format=%s refs/remotes/p4/sb >show &&
- grep "change 3" show
+ test_must_fail git p4 sync 2>err &&
+ grep "Error: no branch refs/remotes/p4/master" err
)
'
--
1.8.1.350.gdbf6fd0
--
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