Add script to convert stacken w3 content

convert_w3_content_to_zola_format.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+if [ "$#" -ne 2 ]; then
+    >&2 echo "./convert_w3_content_to_zola_format.sh source_content_dir dest_content_dir"
+    exit 1
+fi
+
+script_dir=$(dirname -- "$(readlink -f -- "$0"; )")
+
+source_content_dir="$1"
+dest_content_dir="$2"
+
+(
+    cd "$source_content_dir"
+    for mdfile in $(find . -type f -iname '*.md'); do
+        >&2 echo "$mdfile -> $dest_content_dir/$mdfile"
+        mkdir -p "$dest_content_dir/$(dirname $mdfile)"
+        $script_dir/nikola_to_zola.py "$mdfile" > "$dest_content_dir/$mdfile"
+    done
+)