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# SPDX-License-Identifier: AGPL-3.0-or-later
# Building Hydrilla packages.
#
# This file is part of Hydrilla
#
# Copyright (C) 2021, 2022 Wojtek Kosior
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
#
# I, Wojtek Kosior, thereby promise not to sue for violation of this
# file's license. Although I request that you do not make use this code
# in a proprietary program, I am not going to enforce this in court.
import re
import json
from pathlib import Path
from typing import Optional
here = Path(__file__).resolve().parent
_strip_comment_re = re.compile(r'''
^ # match from the beginning of each line
( # catch the part before '//' comment
(?: # this group matches either a string or a single out-of-string character
[^"/] |
"
(?: # this group matches any in-a-string character
[^"\\] | # match any normal character
\\[^u] | # match any escaped character like '\f' or '\n'
\\u[a-fA-F0-9]{4} # match an escape
)*
"
)*
)
# expect either end-of-line or a comment:
# * unterminated strings will cause matching to fail
# * bad comment (with '/' instead of '//') will be indicated by second group
# having length 1 instead of 2 or 0
(//?|$)
''', re.VERBOSE)
def strip_json_comments(text: str) -> str:
"""
Accept JSON text with optional C++-style ('//') comments and return the text
with comments removed. Consecutive slashes inside strings are handled
properly. A spurious single slash ('/') shall generate an error. Errors in
JSON itself shall be ignored.
"""
processed = 0
stripped_text = []
for line in text.split('\n'):
match = _strip_comment_re.match(line)
if match is None: # unterminated string
# ignore this error, let json module report it
stripped = line
elif len(match[2]) == 1:
raise json.JSONDecodeError('bad comment', text,
processed + len(match[1]))
else:
stripped = match[1]
stripped_text.append(stripped)
processed += len(line) + 1
return '\n'.join(stripped_text)
def normalize_version(ver: list[int]) -> list[int]:
"""Strip right-most zeroes from 'ver'. The original list is not modified."""
new_len = 0
for i, num in enumerate(ver):
if num != 0:
new_len = i + 1
return ver[:new_len]
def parse_version(ver_str: str) -> list[int]:
"""
Convert 'ver_str' into an array representation, e.g. for ver_str="4.6.13.0"
return [4, 6, 13, 0].
"""
return [int(num) for num in ver_str.split('.')]
def version_string(ver: list[int], rev: Optional[int]=None) -> str:
"""
Produce version's string representation (optionally with revision), like:
1.2.3-5
No version normalization is performed.
"""
return '.'.join([str(n) for n in ver]) + ('' if rev is None else f'-{rev}')
def load_schema(schema_filename: str) -> dict:
"""Find schema JSON file in '../schemas' and json.load() it."""
with open(here.parent / 'schemas' / schema_filename, 'rt') as file_handle:
return json.load(file_handle)
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