added command line arguments support

main.py

@@ -1,6 +1,29 @@
+import argparse
+
 from schema import InstructionSetSchema
 
+description = """Examples:
+    - Default theme (black on white):
+        python main.py schema.xml -o out.jpg
+
+    - Dark theme (white on black):
+        python main.py schema.xml -o out.jpg -c dark.json
+
+    - Blueprint theme (white on blue):
+        python main.py schema.xml -o out.jpg -c blueprint.json
+
+    - Transparent background:
+        python main.py schema.xml -o out.png -c transparent.json
+"""
+
 if __name__ == "__main__":
-    schema = InstructionSetSchema("example1.yaml")
-    schema.save("example1_v2.jpg")
-    input()
+    parser = argparse.ArgumentParser(description=description, formatter_class=argparse.RawTextHelpFormatter)
+    parser.add_argument("schema", help="Path to the schema description. Accepted formats are: YAML, JSON and XML")
+    parser.add_argument("-o", "--output", help="Output path", default="out.jpg")
+    parser.add_argument("-c", "--config", help="Path to the config file", default="config.json")
+    parser.add_argument("-D", "--display", help="Enable pygame display of the result", action="store_true")
+    
+    args = parser.parse_args()
+    
+    schema = InstructionSetSchema(args.schema, args.config, args.display)
+    schema.save(args.output)