The file's length is recorded, and then you pass the stream and file length into the appropriate setXXXStream method.

文件的长度将被记录，并且随后将把流和文件长度传入相应的setXXXStream 方法。

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The metadata cache contains the full path names of directories and files as keys and metadata (e.g. file length, last modification date, and whether the key is a file or a directory) as values.

元数据缓存器将目录和文件的路径名称保存为键，将元数据保存为值（如文件长度、最后修改时间、标记该条目是文件还是目录等）。

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Ensure that file is valid. File length cannot be less than 20 bytes.

确保该文件有效。文件长度不能少于20个字节。

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Ensure that file is valid. File length cannot be less than 20 bytes.

确保该文件有效。文件长度不能少于20个字节。

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