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# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2023 EfficiOS Inc.
#
# pyright: strict, reportTypeCommentUsage=false
import os
import sys
import typing
import argparse
from typing import Any, List, Union
import normand
import moultipart
class ErrorCause:
def __init__(self, what: str, line_no: int, col_no: int):
self._what = what
self._line_no = line_no
self._col_no = col_no
@property
def what(self):
return self._what
@property
def line_no(self):
return self._line_no
@property
def col_no(self):
return self._col_no
class Error(RuntimeError):
def __init__(self, causes: List[ErrorCause]):
self._causes = causes
@property
def causes(self):
return self._causes
def _write_file(
name: str, base_dir: str, content: Union[str, bytearray], verbose: bool
):
path = os.path.join(base_dir, name)
if verbose:
print("Writing `{}`.".format(os.path.normpath(path)))
os.makedirs(os.path.normpath(os.path.dirname(path)), exist_ok=True)
with open(path, "w" if isinstance(content, str) else "wb") as f:
f.write(content)
def _normand_parse(
part: moultipart.Part, init_vars: normand.VariablesT, init_labels: normand.LabelsT
):
try:
return normand.parse(
part.content, init_variables=init_vars, init_labels=init_labels
)
except normand.ParseError as e:
raise Error(
[
ErrorCause(
msg.text,
msg.text_location.line_no + part.first_content_line_no - 1,
msg.text_location.col_no,
)
for msg in e.messages
]
) from e
def _reformat_ctf_2_metadata(content: str):
import json
json_seq_fragments = [] # type: list[str]
for fragment in json.loads(content):
json_seq_fragments.append("\x1e{}".format(json.dumps(fragment, indent=2)))
return "\n".join(json_seq_fragments)
def _reformat_metadata(content: str):
content = content.strip() + "\n"
if content.startswith("["):
# CTF 2: JSON array to JSON text sequence
return _reformat_ctf_2_metadata(content)
return content
def _generate_from_part(
part: moultipart.Part,
base_dir: str,
verbose: bool,
normand_vars: normand.VariablesT,
normand_labels: normand.LabelsT,
):
content = part.content
if part.header_info == "metadata":
content = _reformat_metadata(content)
else:
res = _normand_parse(part, normand_vars, normand_labels)
content = res.data
normand_vars = res.variables
normand_labels = res.labels
_write_file(part.header_info, base_dir, content, verbose)
return normand_vars, normand_labels
def generate(input_path: str, base_dir: str, verbose: bool):
with open(input_path) as input_file:
variables = {} # type: normand.VariablesT
labels = {} # type: normand.LabelsT
for part in moultipart.parse(input_file):
variables, labels = _generate_from_part(
part, base_dir, verbose, variables, labels
)
def _parse_cli_args():
argparser = argparse.ArgumentParser()
argparser.add_argument(
"input_path", metavar="PATH", type=str, help="moultipart input file name"
)
argparser.add_argument(
"--base-dir", type=str, help="base directory of generated files", default=""
)
argparser.add_argument(
"--verbose", "-v", action="store_true", help="increase verbosity"
)
return argparser.parse_args()
def _run_cli(args: Any):
generate(
typing.cast(str, args.input_path),
typing.cast(str, args.base_dir),
typing.cast(bool, args.verbose),
)
def _try_run_cli():
args = _parse_cli_args()
try:
_run_cli(args)
except Error as exc:
print("Failed to process Normand part:", file=sys.stderr)
for cause in reversed(exc.causes):
print(
" {}:{}:{} - {}{}".format(
os.path.abspath(args.input_path),
cause.line_no,
cause.col_no,
cause.what,
"." if cause.what[-1] not in ".:;" else "",
),
file=sys.stderr,
)
sys.exit(1)
if __name__ == "__main__":
_try_run_cli()
|
