fixed handling of local prints where url is an file:// path

Author: Xento

tools_3mf.py

@@ -69,7 +69,15 @@ def download3mfFromFTP(filename, destFile):
   ftp_host = PRINTER_IP
   ftp_user = "bblp"
   ftp_pass = PRINTER_CODE
-  remote_path = "/cache/" + filename
+  parsed = urlparse(filename)
+  if parsed.scheme in ("ftp", "ftps"):
+    remote_path = parsed.path or "/"
+  else:
+    remote_path = filename
+
+  if not remote_path.startswith("/"):
+    remote_path = "/cache/" + remote_path
+
   local_path = destFile.name  # 🔹 Download into the current directory
   encoded_remote_path = urllib.parse.quote(remote_path)
   with open(local_path, "wb") as f:
@@ -93,11 +101,20 @@ def download3mfFromFTP(filename, destFile):
 
     log("[DEBUG] Starting file download...")
 
-    try:
+    max_attempts = 3
+    for attempt in range(1, max_attempts + 1):
+      try:
+        f.seek(0)
+        f.truncate()
         c.perform()
         log("[DEBUG] File successfully downloaded!")
-    except pycurl.error as e:
-        log(f"[ERROR] cURL error: {e}")
+        break
+      except pycurl.error as e:
+        log(f"[ERROR] cURL error on attempt {attempt}/{max_attempts}: {e}")
+        if attempt < max_attempts:
+          time.sleep(10)
+        else:
+          log("[ERROR] Giving up after repeated cURL failures.")
 
     c.close()
 
@@ -126,6 +143,10 @@ def getMetaDataFrom3mf(url):
         download3mfFromCloud(url, temp_file)
       elif url.startswith("local:"):
         download3mfFromLocalFilesystem(url.replace("local:", ""), temp_file)
+      elif url.startswith("file://"):
+        # Handle file:// URLs from MQTT by fetching the path over FTP.
+        file_path = urlparse(url).path
+        download3mfFromFTP(file_path, temp_file)
       else:
         download3mfFromFTP(url.replace("ftp://", "").replace(".gcode",""), temp_file)