import math
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import hashlib
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import os
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import json
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import re
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def get_bit_mask(start, end):
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bits = math.ceil((end + 1) / 8) * 8
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if bits == 0:
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bits = 8
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mask = 0
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for i in range(start, end + 1):
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mask |= 1 << (bits - i - 1)
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return mask
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def generate_md5(input_string):
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# 创建一个 md5 哈希对象
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md5_hash = hashlib.md5()
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# 更新哈希对象的内容（需要将字符串编码为字节）
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md5_hash.update(input_string.encode('utf-8'))
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# 获取哈希值的十六进制表示
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md5_digest = md5_hash.hexdigest()
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return md5_digest
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def file_exists(cache_file: str):
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return os.path.exists(cache_file)
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def read_from_file(cache_file: str) -> str:
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with open(cache_file, 'r', encoding='utf-8') as f:
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text = f.read()
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return text
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def save_to_file(text, cache_file):
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with open(cache_file, 'w', encoding='utf-8') as f:
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f.write(text)
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def replace_tpl_paras(tpl_text: str, data: dict):
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for key, val in data.items():
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if not isinstance(val, str):
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val = json.dumps(json.dumps(val, ensure_ascii=False), ensure_ascii=False)[1:-1]
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tpl_text = tpl_text.replace('{{' + key + '}}', val)
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return tpl_text
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def to_file_name(text: str):
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"""
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将文本转为合法的文件名称。
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将特殊字符替换为_
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:param text:
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:return:
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"""
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return re.sub(r'[\\/:*?"<>|]', '_', text)
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