24024
d4b28a731a
- 新增 SystemNotification 模型，实现系统通知的数据存储 - 管理后台新增通知相关接口，支持通知的增删改查 - 用户端新增接口，获取最新激活通知并支持标记已读 - 在前端首页添加全局通知弹窗，实现通知自动轮询及已读同步 - 生成历史记录中兼容支持图片缩略图及新旧图片格式 - 优化后台图片同步逻辑，新增缩略图生成与存储 - 支持上传参考图的拖拽、粘贴、多文件上传及排序功能 - 增加购买积分页面入口及菜单项，调整菜单结构 - 日志系统由 Redis 列表迁移为有序集合，保留 30 天日志 - 优化日志页面样式，提升可读性及滚动体验 - 调整部分模板布局为自定义滚动条容器，增强视觉一致性
113 lines
2.5 KiB
Python
113 lines
2.5 KiB
Python
#
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# The Python Imaging Library.
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# $Id$
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#
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# Binary input/output support routines.
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#
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# Copyright (c) 1997-2003 by Secret Labs AB
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# Copyright (c) 1995-2003 by Fredrik Lundh
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# Copyright (c) 2012 by Brian Crowell
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#
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# See the README file for information on usage and redistribution.
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#
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"""Binary input/output support routines."""
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from __future__ import annotations
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from struct import pack, unpack_from
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def i8(c: bytes) -> int:
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return c[0]
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def o8(i: int) -> bytes:
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return bytes((i & 255,))
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# Input, le = little endian, be = big endian
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def i16le(c: bytes, o: int = 0) -> int:
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"""
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Converts a 2-bytes (16 bits) string to an unsigned integer.
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:param c: string containing bytes to convert
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:param o: offset of bytes to convert in string
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"""
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return unpack_from("<H", c, o)[0]
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def si16le(c: bytes, o: int = 0) -> int:
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"""
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Converts a 2-bytes (16 bits) string to a signed integer.
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:param c: string containing bytes to convert
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:param o: offset of bytes to convert in string
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"""
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return unpack_from("<h", c, o)[0]
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def si16be(c: bytes, o: int = 0) -> int:
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"""
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Converts a 2-bytes (16 bits) string to a signed integer, big endian.
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:param c: string containing bytes to convert
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:param o: offset of bytes to convert in string
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"""
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return unpack_from(">h", c, o)[0]
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def i32le(c: bytes, o: int = 0) -> int:
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"""
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Converts a 4-bytes (32 bits) string to an unsigned integer.
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:param c: string containing bytes to convert
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:param o: offset of bytes to convert in string
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"""
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return unpack_from("<I", c, o)[0]
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def si32le(c: bytes, o: int = 0) -> int:
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"""
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Converts a 4-bytes (32 bits) string to a signed integer.
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:param c: string containing bytes to convert
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:param o: offset of bytes to convert in string
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"""
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return unpack_from("<i", c, o)[0]
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def si32be(c: bytes, o: int = 0) -> int:
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"""
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Converts a 4-bytes (32 bits) string to a signed integer, big endian.
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:param c: string containing bytes to convert
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:param o: offset of bytes to convert in string
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"""
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return unpack_from(">i", c, o)[0]
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def i16be(c: bytes, o: int = 0) -> int:
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return unpack_from(">H", c, o)[0]
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def i32be(c: bytes, o: int = 0) -> int:
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return unpack_from(">I", c, o)[0]
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# Output, le = little endian, be = big endian
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def o16le(i: int) -> bytes:
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return pack("<H", i)
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def o32le(i: int) -> bytes:
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return pack("<I", i)
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def o16be(i: int) -> bytes:
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return pack(">H", i)
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def o32be(i: int) -> bytes:
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return pack(">I", i)
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