Update dlmodels.sh

dlmodels.sh

@@ -16,17 +16,22 @@ download_file() {
 
     echo -e "\nChecking file: $filepath"
 
-    # If the file already exists, check its integrity
+    # If file already exists, check its integrity
     if [[ -f "$filepath" ]]; then
-        # Get remote file size using curl
-        remote_size=$(curl -sI "$url" | awk '/Content-Length/ {print $2}' | tr -d '\r')
-        # Get local file size
+        # Get the remote file size using a reliable curl method
+        remote_size=$(curl -sI "$url" | grep -i "Content-Length" | awk '{print $2}' | tr -d '\r')
         local_size=$(stat -c%s "$filepath")
 
-        # Debugging output to understand size comparison
-        echo "Remote size: $remote_size, Local size: $local_size for file $filepath"
+        # Debug output
+        echo "Remote size: ${remote_size:-Unknown}, Local size: $local_size for file $filepath"
 
-        # If the file sizes match, skip download
+        # Handle cases where Content-Length is not available
+        if [[ -z "$remote_size" ]]; then
+            echo -e "[SKIP] Unable to verify size for $filepath (no Content-Length). Assuming complete."
+            return 0
+        fi
+
+        # If the file sizes match, skip the download
         if [[ "$remote_size" == "$local_size" ]]; then
             echo -e "[SKIP] $filepath already exists and is complete."
             return 0