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util.py
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util.py
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# SPDX-License-Identifier: GPL-3.0-or-later
import hashlib
import logging
import re
import sys
from functools import wraps
def md5sum(plain: str) -> str:
hl = hashlib.md5()
hl.update(str(plain).encode(encoding='utf-8'))
crypt = hl.hexdigest()
return crypt
def absolute_path(relative_path: str) -> str:
return "{}/{}".format(sys.path[0], relative_path)
def singleton(cls):
_instance = {}
def inner():
if cls not in _instance:
_instance[cls] = cls()
return _instance[cls]
return inner
def default(default_value):
def set_default_value(fn):
@wraps(fn)
def decorated(*args, **kwargs):
try:
ret = fn(*args, **kwargs)
except:
ret = default_value
logging.debug("函数 {} 使用默认返回值 {}".format(
fn.__name__, default_value))
finally:
return ret
return decorated
return set_default_value
@default([])
def delete_unmatched(lines, regular):
# 拆分行首的'\n'会出现lines[0]为''的情况,计数时不需要考虑第一个
logging.debug("需要进行正则匹配的数量 {}".format(len(lines)-1))
lines = [line for line in lines if re.match(regular, line) != None]
logging.debug("匹配后剩余数量 {}".format(len(lines)))
return lines
def regular_match(lines: str, regular):
if regular == None:
logging.debug("未设置正则匹配 直接返回")
return lines
lines = "\n".join(delete_unmatched(lines.split("\n"), regular))
logging.debug("最终推送的字符串为 {}".format(lines))
return "\n{}".format(lines)
if __name__ == '__main__':
print(regular_match("1\n2\n3\n4", ".*"))