How to switch iostream from binary to text mode and vice versa?

I want to read both formatted text and binary data from the same iostream. How can I do that?

Why? Imagine this situation: You have different resources, and resource loaders for them, that take a std::istream as a parameter. And there are a "resource source" that provides these streams. Resources can be both text and binary and I need to handle both cases with resource loaders.

Or other situat开发者_如何学编程ion: Image that you have an archive with resources of mixed types. How can I get a text stream from inside the binary archive stream?

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All that binary mode does is prevent special handling of newline characters. C++ has no concept of "resources" or "resource types". Simply read everything in binary mode.