Make dmadata tool usable from command line

Makefile

@@ -96,7 +96,7 @@ clean:
 	rm $(ROM) code.elf code.bin boot.bin -r build
 
 build/baserom/dmadata: $(COMP_FILES) $(BASEROM_BUILD_FILES)
-	python3 dmadata.py
+	python3 ./tools/dmadata.py ./tables/dmadata_table.py $@
 
 build/baserom/boot: boot.bin
 	cp $< $@

tables/dmadata_table.py

@@ -1,4 +1,5 @@
-dmadata_table = [
+# Follows the format of (File Path (blank if it's a null entry), Compressed File Path (if compressed), Alignment, Size (for a null entry))
+[
     ('build/baserom/makerom', '', 0x10, 0),
     ('build/baserom/boot', '', 0x10, 0),
     ('dmadata', '', 0x10, 0),

tools/dmadata.py

@@ -1,18 +1,18 @@
-import os
+import os, struct, sys, ast, argparse
-import struct
-import sys
-
-OUT = 'build/baserom/dmadata'
-
-from dmadata_table import *
 
 def align_up(base, align_to):
     return ((base + align_to - 1) // align_to) * align_to
 
 if __name__ == "__main__":
-    with open(OUT, 'wb') as dmadata:
+    parser = argparse.ArgumentParser()
+    parser.add_argument('files', help='file list')
+    parser.add_argument('out', help='output file')
+    args = parser.parse_args()
+
+    with open(args.out, 'wb') as dmadata, open(args.files, 'r') as files:
         curr_vrom = 0
         curr_phys = 0
+        dmadata_table = ast.literal_eval(files.read())
         for base_file, comp_file, alignment, size_if_missing in dmadata_table:
             try:
                 uncompressed = comp_file == ''