Merge branch 'pr/13' - thanks L-A-Sutherland :)

Author: GeekDetour

bricklayers.py

@@ -2034,6 +2034,17 @@ def expand_ranges(ranges):
 
     error_marker = "❌ Error: " if sys.stderr.encoding.lower() == "utf-8" else "[ERROR] "
 
+
+    def gcode_opener(path, flags):
+        file=os.open(path, flags)
+        header=os.pread(file,4,0)
+        if header==bytes("GCDE","ascii"):
+            os.close(file) #do not leak the file descriptor
+            print(f"{error_marker}The file '{input_file}' is a binary gcode file, which is not supported. Disable Binary G-code in your slicer settings", file=sys.stderr)
+            sys.exit(1)  # Exit immediately
+        return file
+
+
     # Only process the file if Brick Layers if enabled
     if args_dict["enabled"] > 0:
 
@@ -2169,7 +2180,7 @@ def expand_ranges(ranges):
         # print(final_output_file)
 
         # Open the input and output files using Generators:
-        with open(input_file, "r", encoding="utf-8", errors="replace", newline="") as infile, open(final_output_file, "w", encoding="utf-8", newline="\n") as outfile:
+        with open(input_file, 'r', encoding="utf8", newline="",opener=gcode_opener) as infile, open(final_output_file, 'w', encoding="utf-8", newline="\n") as outfile:
             # Pass the file generator (line-by-line) to process_gcode
             gcode_stream = (line for line in infile)  # Efficient generator