| """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 |
| from runner.run_command import 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()) |