fix shellcheck codegen in code-generator

hack/.shellcheck_failures

@@ -165,8 +165,6 @@
 ./staging/src/k8s.io/apiextensions-apiserver/hack/verify-codegen.sh
 ./staging/src/k8s.io/code-generator/generate-groups.sh
 ./staging/src/k8s.io/code-generator/generate-internal-groups.sh
-./staging/src/k8s.io/code-generator/hack/update-codegen.sh
-./staging/src/k8s.io/code-generator/hack/verify-codegen.sh
 ./staging/src/k8s.io/csi-api/hack/update-codegen.sh
 ./staging/src/k8s.io/csi-api/hack/verify-codegen.sh
 ./staging/src/k8s.io/kube-aggregator/hack/build-image.sh

staging/src/k8s.io/code-generator/hack/update-codegen.sh

@@ -22,15 +22,15 @@ set -o pipefail
 # - --output-base because this script should also be able to run inside the vendor dir of
 #   k8s.io/kubernetes. The output-base is needed for the generators to output into the vendor dir
 #   instead of the $GOPATH directly. For normal projects this can be dropped.
-$(dirname ${BASH_SOURCE})/../generate-internal-groups.sh all \
+"$(dirname "${BASH_SOURCE[0]}")"/../generate-internal-groups.sh all \
   k8s.io/code-generator/_examples/apiserver k8s.io/code-generator/_examples/apiserver/apis k8s.io/code-generator/_examples/apiserver/apis \
   "example:v1 example2:v1" \
-  --output-base "$(dirname ${BASH_SOURCE})/../../.."
-$(dirname ${BASH_SOURCE})/../generate-groups.sh all \
+  --output-base "$(dirname "${BASH_SOURCE[0]}")/../../.."
+"$(dirname "${BASH_SOURCE[0]}")"/../generate-groups.sh all \
   k8s.io/code-generator/_examples/crd k8s.io/code-generator/_examples/crd/apis \
   "example:v1 example2:v1" \
-  --output-base "$(dirname ${BASH_SOURCE})/../../.."
-  $(dirname ${BASH_SOURCE})/../generate-groups.sh all \
+  --output-base "$(dirname "${BASH_SOURCE[0]}")/../../.."
+  "$(dirname "${BASH_SOURCE[0]}")"/../generate-groups.sh all \
   k8s.io/code-generator/_examples/MixedCase k8s.io/code-generator/_examples/MixedCase/apis \
   "example:v1" \
-  --output-base "$(dirname ${BASH_SOURCE})/../../.."
+  --output-base "$(dirname "${BASH_SOURCE[0]}")/../../.."

staging/src/k8s.io/code-generator/hack/verify-codegen.sh

@@ -18,8 +18,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-SCRIPT_ROOT=$(dirname "${BASH_SOURCE}")/..
-SCRIPT_BASE=${SCRIPT_ROOT}/../..
+SCRIPT_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
 
 DIFFROOT="${SCRIPT_ROOT}/_examples"
 TMP_DIFFROOT="${SCRIPT_ROOT}/_tmp/_examples"
@@ -50,6 +49,6 @@ fi
 
 # smoke test
 echo "Smoke testing _example by compiling..."
-go build ./${SCRIPT_ROOT}/_examples/crd/...
-go build ./${SCRIPT_ROOT}/_examples/apiserver/...
-go build ./${SCRIPT_ROOT}/_examples/MixedCase/...
+go build ./"${SCRIPT_ROOT}"/_examples/crd/...
+go build ./"${SCRIPT_ROOT}"/_examples/apiserver/...
+go build ./"${SCRIPT_ROOT}"/_examples/MixedCase/...