Add auto-default-branch

1 files changed, 29 insertions, 0 deletions

diff --git a/gitolite-cgit/auto-default-branch.sh b/gitolite-cgit/auto-default-branch.sh
new file mode 100644
index 0000000..d9c60a0
--- /dev/null
+++ b/gitolite-cgit/auto-default-branch.sh
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+info() { printf >&2 %s\\n "$*" ; }
+
+die()  { info "$*" ; exit 1 ; }
+
+ensure_HEAD() {
+   [ "$1" = 'POST_GIT' ] || die "unsupported trigger '$1'"
+
+   cd "$GL_REPO_BASE/$2.git"
+
+   # everything OK if the default in HEAD points to a real branch
+   git show-ref --quiet --verify "$(git symbolic-ref HEAD)" && return 0
+
+   # there *might* be a mismatch, so let's find out a real branch
+   local head
+   head="$(git show-ref --heads | head -1 | sed -e 's/^.* //')"
+
+   # the repo might still be empty
+   [ -n "$head" ] || return 0
+
+   # we have a default branch that we can set here
+   info "setting HEAD to <$head>"
+   git symbolic-ref HEAD "$head" -m "Default HEAD to branch <$head>"
+}
+
+set -eu
+
+ensure_HEAD "$@"