从stdio文件构造流 [英] Construct ofstream from stdio file

问题描述

是否可以从给定的stdio文件（旧式C文件句柄）创建一个ofstream对象？最好不要关闭并重新打开文件。

Is it possible to create an ofstream object from a given stdio file (old-style C file handle)? Preferably without closing and re-opening the file.

这样做的目的是我有一个stdio文件和一个我正在使用的库获取一个流对象。

The purpose for this is I have a stdio file and a library I'm using takes a stream object.

推荐答案

如果使用boost是一个选项，并且库需要 std :: basic_ostream （而不是 std :: ofstream ）你可以使用文件描述符接收器来包装你的文件描述符，构造一个 stream ，并将其传递给目标库。

If using boost is an option, and the library takes std::basic_ostream (as opposed to an std::ofstream) you could use a File Descriptor Sink to wrap your file descriptor, construct a stream from of it, and pass it to your target library.

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