Allow specifying different database for all commands

tag.sh

@@ -18,7 +18,14 @@ set -ueo pipefail
 # FIXME: adding tags doesn't work
 
 SCRIPT_DIR=$(dirname $(readlink "$0"))
-DB_FILE="tags.db"
+CURRENT_DIR=$(dirname "$PWD")
+SCRIPT_NAME=$(basename "$0")
+
+
+DB_FILE="${CURRENT_DIR}/tags.db"
+[ "$1" = "--db" ] && DB_FILE="$2" && shift 2
+
+
 DB_SCHEMA="${SCRIPT_DIR}/database.sql"
 declare -A FILTERS
 FILTERS[video]="avi|flv|mkv|mov|mp4|mpg|ogv|webm|wmv"