Add demo code

rcjk_read_demo.py

@@ -0,0 +1,28 @@
+# pip install git+https://github.com/BlackFoundryCom/fontra.git
+# pip install git+https://github.com/BlackFoundryCom/fontra-rcjk.git
+
+# See src/fontra/core/classes.py in the fontra repo for the data structure
+# PackedPath objects have a drawPoints method that takes a point pen
+
+
+import argparse
+import asyncio
+from dataclasses import asdict
+import json
+import sys
+from fontra_rcjk.backend_fs import RCJKBackend
+
+
+async def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("rcjk_path")
+    parser.add_argument("glyph_name")
+    args = parser.parse_args()
+    backend = RCJKBackend.fromPath(args.rcjk_path)
+    revCmap = await backend.getGlyphMap()
+    print(sorted(revCmap)[:100])
+    glyph = await backend.getGlyph(args.glyph_name)
+    print(json.dumps(asdict(glyph), indent=2))
+
+
+asyncio.run(main())