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#!/usr/bin/env python3
########################################################################
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
########################################################################
import argparse
import csv
import io
from pathlib import Path
def _cleanse_symbol(s):
s = s.replace("-", "_")
s = s.replace(":", "_")
s = s.replace(".", "_")
s = s.replace("(", "")
s = s.replace(")", "")
return s.lower()
def _generate_enum(enum_symbols, outpath):
enum_symbols = sorted(enum_symbols)
buf = list()
buf.append("enum class character_set_t")
buf.append("{")
buf.append(" unspecified = 0,")
for entry in enum_symbols:
buf.append(f" {entry[0]},")
buf.append("};")
outpath.write_text("\n".join(buf))
def _generate_map_entries(aliases, outpath):
entries = list()
for symbol, mapped_strs in aliases.items():
for mapped_str in mapped_strs:
entries.append((mapped_str.lower(), symbol))
entries = sorted(entries, key=lambda x: x[0])
buf = ["constexpr map_type::entry entries[] = {",]
for entry in entries:
buf.append(f' {{ "{entry[0]}", character_set_t::{entry[1]} }},')
buf.append("};")
outpath.write_text("\n".join(buf))
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--enum-out", type=Path, default=Path("./enum.inl"))
parser.add_argument("--map-out", type=Path, default=Path("./map-entries.inl"))
parser.add_argument("filepath", type=Path)
args = parser.parse_args()
content = args.filepath.read_text()
stream = io.StringIO(content)
reader = csv.reader(stream)
next(reader) # skip the header row
aliases = dict()
enum_symbols = list()
symbol = None
for row in reader:
mime_name, name, alias = row
if mime_name:
# Take the MIME name as new symbol.
symbol = _cleanse_symbol(mime_name)
aliases[symbol] = set([mime_name, name])
enum_symbols.append((symbol, mime_name, name))
if alias:
aliases[symbol].add(alias)
elif name:
# Take the name as new symbol.
symbol = _cleanse_symbol(name)
aliases[symbol] = set([name,])
enum_symbols.append((symbol, name))
if alias:
aliases[symbol].add(alias)
else:
# the row only contains an alias for the current symbol.
if not alias:
raise RuntimeError("alias must be present.")
aliases[symbol].add(alias)
_generate_enum(enum_symbols, args.enum_out)
_generate_map_entries(aliases, args.map_out)
if __name__ == "__main__":
main()
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