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import os
import pathlib
import re
import shutil
import subprocess
import tempfile
def _main():
os.chdir(os.path.dirname(__file__))
with tempfile.TemporaryDirectory() as temp_dir:
temp_dir = pathlib.Path(temp_dir)
schema_filenames = ["sources.fbs", "patio.fbs"]
namespace_map = {}
type_map = {}
for schema_filename in schema_filenames:
with open(pathlib.Path("flatbuffers") / schema_filename, "rt") as source_schema_file:
source_schema = list(source_schema_file)
for line_index, line in enumerate(source_schema):
namespace_match = re.match("^namespace (.*);$", line)
if namespace_match is not None:
source_namespace = namespace_match[1]
dest_namespace = f"org.shedlang.compiler.{source_namespace.lower()}.flatbuffers"
namespace_map[source_namespace] = dest_namespace
source_schema[line_index] = f"namespace {dest_namespace};"
type_match = re.match(r"^((?:enum|table|union)\s+)(\S+)(\s+.*{)", line)
if type_match is not None:
source_type = type_match[2]
dest_type = f"{source_type}Fbs"
type_map[source_type] = dest_type
source_schema[line_index] = f"{type_match[1]}{dest_type}{type_match[3]}"
with open(temp_dir / schema_filename, "wt") as dest_schema_file:
for line in source_schema:
for source_namespace, dest_namespace in namespace_map.items():
line = line.replace(f":{source_namespace}.", f":{dest_namespace}.")
for source_type, dest_type in type_map.items():
line = re.sub(rf"\b{source_type}\b", dest_type, line)
dest_schema_file.write(line)
gen_path = pathlib.Path("src/gen/java")
subprocess.run(
["flatc-25.2.10", "-o", gen_path, "--java"] + [
temp_dir / schema_filename
for schema_filename in schema_filenames
],
check=True,
)
_main()
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