db.sh: add parse_mode function

3 files changed, 21 insertions, 4 deletions

diff --git a/links-chmod b/links-chmod
index 9c7a427..8eb8849 100755
--- a/links-chmod
+++ b/links-chmod
@@ -79,7 +79,7 @@ parse_script_options() {
                 update_shared_dir "$value"
                 ;;
             -m|--mode)
-                mode="$value"
+                mode="$( parse_mode "$value" )"
                 ;;
             *)
                 script_usage "unrecognized parameter: $key" >&2
diff --git a/links-update b/links-update
index 1e1c829..6a802bc 100755
--- a/links-update
+++ b/links-update
@@ -32,8 +32,6 @@ readonly script_dir
 src_dir="$( cd -- "$script_dir/src" && pwd )"
 readonly src_dir
 
-mode=''
-
 . "$src_dir/common.sh"
 . "$src_dir/os.sh"
 . "$src_dir/path.sh"
@@ -93,7 +91,7 @@ parse_script_options() {
                 update_shared_dir "$value"
                 ;;
             -m|--mode)
-                mode="$value"
+                mode="$( parse_mode "$value" )"
                 ;;
             *)
                 script_usage "unrecognized parameter: $key" >&2
@@ -103,6 +101,8 @@ parse_script_options() {
     done
 }
 
+mode=''
+
 main() {
     parse_script_options "$@"
     check_symlinks_enabled
diff --git a/src/db.sh b/src/db.sh
index d987e85..b057202 100644
--- a/src/db.sh
+++ b/src/db.sh
@@ -263,6 +263,23 @@ unlink_obsolete_entries() {
     done
 }
 
+parse_mode() {
+    if [ "$#" -ne 1 ]; then
+        echo "usage: ${FUNCNAME[0]} MODE" >&2
+        return 1
+    fi
+
+    local mode="$1"
+    shift
+
+    if [ -z "$mode" ]; then
+        dump "mode cannot be empty" >&2
+        return 1
+    fi
+
+    echo "$mode"
+}
+
 chmod_entries() {
     if [ "$#" -ne 1 ]; then
         echo "usage: ${FUNCNAME[0]} MODE" >&2