[wasm-sample] Make addTable take args

src/wasm-sample/Makefile

@@ -12,7 +12,7 @@ all: test.wasm.ttf
 		-o $@
 
 %.wasm.ttf: %.ttf shape.so addTable.py
-	python addTable.py
+	python addTable.py $< $@ shape.so
 
 clean:
 	$(RM) test.wasm.ttf shape.so

src/wasm-sample/addTable.py

@@ -1,11 +1,16 @@
+import sys
 from fontTools.ttLib import TTFont
 from fontTools.ttLib.tables.DefaultTable import DefaultTable
 
-font = TTFont("test.ttf")
+if len(sys.argv) == 1:
+    print("usage: python addTable.py input.ttf output.ttf Wasm.bin")
+    sys.exit(1)
+
+font = TTFont(sys.argv[1])
 
 wasm_table = DefaultTable("Wasm")
-wasm_table.data = open("shape.so", "rb").read()
+wasm_table.data = open(sys.argv[3], "rb").read()
 
 font["Wasm"] = wasm_table
 
-font.save("test.wasm.ttf")
+font.save(sys.argv[2])