Create regex-to-grammar.py

examples/regex-to-grammar.py

@@ -0,0 +1,18 @@
+import json, subprocess, sys, os
+
+assert len(sys.argv) == 2
+[_, pattern] = sys.argv
+
+print(subprocess.check_output(
+  [
+    "python",
+    os.path.join(
+      os.path.dirname(os.path.realpath(__file__)),
+      "json-schema-to-grammar.py"), 
+    "-",
+  ],
+  text=True,
+  input=json.dumps({
+    "type": "string",
+    "pattern": pattern,
+  }, indent=2)))