在 ZIP 文件结构的上下文中，"disks" 是什么？
What are "disks" in this context of the structure of ZIP files?
我目前正在为自己开发一个迷你库来压缩和提取 ZIP 文件。到目前为止，我对 the documentation 没有任何重大问题，只是我不知道 ZIP 文件中的 "disks" 是什么以及如何计算磁盘数量：
4.3.16 End of central directory record:
end of central dir signature 4 bytes (0x06054b50)
number of this disk 2 bytes <= What does "disk" mean here?
number of the disk with the
start of the central directory 2 bytes <= What does "disk" mean here?
total number of entries in the
central directory on this disk 2 bytes <= What does "disk" mean here?
total number of entries in
the central directory 2 bytes
size of the central directory 4 bytes
offset of start of central
directory with respect to
the starting disk number 4 bytes <= What does "disk" mean here?
.ZIP file comment length 2 bytes
.ZIP file comment (variable size)
您提供的字词disk refers to floppy diskettes in the context of splitting and spanning ZIP files (see chapter 8.0 of the documentation；强调我的）：
8.1.1 Spanning is the process of segmenting a ZIP file across
multiple removable media. This support has typically only
been provided for DOS formatted floppy diskettes.
现在，实现通常不再支持拆分和跨越（例如 here (see Limitations) or here（参见过程 finish_zip()）），因为软盘甚至光盘已经过时了。如果你不支持拆分和跨越（一开始），你可以设置值如下：
number of this disk 2 bytes <= You only have one disk/file, so set it to 1.
number of the disk with the
start of the central directory 2 bytes <= You only have one disk/file, so set it to 1.
total number of entries in the
central directory on this disk 2 bytes <= Set it to the overall number of records.
offset of start of central
directory with respect to
the starting disk number 4 bytes <= Set this offset (in bytes) relative to
the start of your archive.
如果要支持拆分或跨越，则每次开始写入新 disk/file 时都必须增加磁盘数。为每个新 disk/file 重置 total number of entries in the central directory on this disk。计算相对于文件开头的偏移量。
我目前正在为自己开发一个迷你库来压缩和提取 ZIP 文件。到目前为止，我对 the documentation 没有任何重大问题，只是我不知道 ZIP 文件中的 "disks" 是什么以及如何计算磁盘数量：
4.3.16 End of central directory record:
end of central dir signature 4 bytes (0x06054b50) number of this disk 2 bytes <= What does "disk" mean here? number of the disk with the start of the central directory 2 bytes <= What does "disk" mean here? total number of entries in the central directory on this disk 2 bytes <= What does "disk" mean here? total number of entries in the central directory 2 bytes size of the central directory 4 bytes offset of start of central directory with respect to the starting disk number 4 bytes <= What does "disk" mean here? .ZIP file comment length 2 bytes .ZIP file comment (variable size)
您提供的字词disk refers to floppy diskettes in the context of splitting and spanning ZIP files (see chapter 8.0 of the documentation；强调我的）：
8.1.1 Spanning is the process of segmenting a ZIP file across multiple removable media. This support has typically only been provided for DOS formatted floppy diskettes.
现在，实现通常不再支持拆分和跨越（例如 here (see Limitations) or here（参见过程 finish_zip()）），因为软盘甚至光盘已经过时了。如果你不支持拆分和跨越（一开始），你可以设置值如下：
number of this disk 2 bytes <= You only have one disk/file, so set it to 1.
number of the disk with the
start of the central directory 2 bytes <= You only have one disk/file, so set it to 1.
total number of entries in the
central directory on this disk 2 bytes <= Set it to the overall number of records.
offset of start of central
directory with respect to
the starting disk number 4 bytes <= Set this offset (in bytes) relative to
the start of your archive.
如果要支持拆分或跨越，则每次开始写入新 disk/file 时都必须增加磁盘数。为每个新 disk/file 重置 total number of entries in the central directory on this disk。计算相对于文件开头的偏移量。