1 files changed, 105 insertions, 0 deletions
diff --git a/scripts/json2fbbin/json2fbbin.py b/scripts/json2fbbin/json2fbbin.py
new file mode 100644
index 0000000..957acb1
--- /dev/null
+++ b/scripts/json2fbbin/json2fbbin.py
@@ -0,0 +1,105 @@
+"""Conversion utility from flatbuffer JSON files to binary and the reverse."""
+# Copyright (c) 2021-2022, ARM Limited.
+# SPDX-License-Identifier: Apache-2.0
+from pathlib import Path
+from typing import Optional
+
+from runner.run_command import run_sh_command, RunShCommandError
+
+
+def fbbin_to_json(flatc: Path, fbs: Path, t_path: Path, o_path: Optional[Path] = None):
+    """Convert the binary flatbuffer to JSON.
+
+    flatc: the Path to the flatc compiler program
+    fbs: the Path to the fbs (flatbuffer schema) file
+    t_path: the Path to the binary flatbuffer file
+    o_path: the output Path where JSON file will be put, if None, it is same as t_path
+    """
+    if o_path is None:
+        o_path = t_path.parent
+    cmd = [
+        str(flatc.absolute()),
+        "-o",
+        str(o_path.absolute()),
+        "--json",
+        "--defaults-json",
+        "--raw-binary",
+        str(fbs.absolute()),
+        "--",
+        str(t_path.absolute()),
+    ]
+    run_sh_command(verbose=False, full_cmd=cmd)
+
+
+def json_to_fbbin(flatc: Path, fbs: Path, j_path: Path, o_path: Optional[Path] = None):
+    """Convert JSON flatbuffer to binary.
+
+    flatc: the Path to the flatc compiler program
+    fbs: the Path to the fbs (flatbuffer schema) file
+    j_path: the Path to the JSON flatbuffer file
+    o_path: the output Path where JSON file will be put, if None, it is same as j_path
+    """
+    if o_path is None:
+        o_path = j_path.parent
+    cmd = [
+        str(flatc.absolute()),
+        "-o",
+        str(o_path.absolute()),
+        "--binary",
+        str(fbs.absolute()),
+        str(j_path.absolute()),
+    ]
+    run_sh_command(verbose=False, full_cmd=cmd)
+
+
+# ------------------------------------------------------------------------------
+
+
+def main(argv=None):
+    """Load and convert supplied file based on file suffix."""
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--flatc",
+        type=Path,
+        default="reference_model/build/thirdparty/serialization_lib/third_party/flatbuffers/flatc",
+        help="the path to the flatc compiler program",
+    )
+    parser.add_argument(
+        "--fbs",
+        type=Path,
+        default="conformance_tests/third_party/serialization_lib/schema/tosa.fbs",
+        help="the path to the flatbuffer schema",
+    )
+    parser.add_argument("path", type=Path, help="the path to the file to convert")
+    args = parser.parse_args(argv)
+    path = args.path
+
+    if not path.is_file():
+        print(f"Invalid file to convert - {path}")
+        return 2
+
+    if not args.flatc.is_file():
+        print(f"Invalid flatc compiler - {args.flatc}")
+        return 2
+
+    if not args.fbs.is_file():
+        print(f"Invalid flatbuffer schema - {args.fbs}")
+        return 2
+
+    try:
+        if path.suffix == ".json":
+            json_to_fbbin(args.flatc, args.fbs, path)
+        else:
+            # Have to assume this is a binary flatbuffer file as could have any suffix
+            fbbin_to_json(args.flatc, args.fbs, path)
+    except RunShCommandError as e:
+        print(e)
+        return 1
+
+    return 0
+
+
+if __name__ == "__main__":
+    exit(main())