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#!/usr/bin/env python3
#
# Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
#
# SPDX-License-Identifier: BSD-3-Clause
"""Generate a header that provides a JSON file as a string."""
import argparse
from pathlib import Path
import sys
_BYTES_PER_LINE = 32
def _parse_args():
parser = argparse.ArgumentParser(
description=__doc__,
)
parser.add_argument(
"data",
type=argparse.FileType("rb"),
help="Path to data file to generate a header for",
)
parser.add_argument(
"-o",
"--output",
type=argparse.FileType("wb"),
default=sys.stdout.buffer,
help="Output file path. Defaults to stdout.",
)
return parser.parse_args()
def generate_header(data, output):
var_name = Path(output.name).stem.replace(".", "_")
include_guard = f"_{var_name.upper()}_H"
prefix_lines = (
f"#ifndef {include_guard}",
f"#define {include_guard}",
"",
"#include <string>",
"",
f'const std::string {var_name} = R"""(',
)
output.write("\n".join(prefix_lines).encode())
output.write(data.read())
suffix_lines = (
')""";',
"",
f"#endif // {include_guard}",
"",
)
output.write("\n".join(suffix_lines).encode())
if __name__ == "__main__":
sys.exit(generate_header(**vars(_parse_args())))
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