[RESOLVED] string as stream

Hello!

I'm solving one problem related to parsing of text files. It would be very convenient for me to read ifstream line by line at first, treat every line as string (preferably c++ string), then convert that string to istream and read from the istream.

So:

Is there an easy way to convert std::string into std::istream?

Quote:

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Originally Posted by andrey_zh

Hello!

I'm solving one problem related to parsing of text files. It would be very convenient for me to read ifstream line by line at first, treat every line as string (preferably c++ string), then convert that string to istream and read from the istream.

So:

Is there an easy way to convert std::string into std::istream?

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Yes, an istringstream is a istream, so you can transform your string into an istringstream and get the same result. Said conversion is actually very easy:

Code:

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std::istringstream iss(myString)

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Simple as that. Don't forget to include <sstream>. It is OK and easier to construct and destroy the iss on every iteration. You can choose to use a single iss that you recycle on every iteration, but it makes error handling and cleanup harder.

It works great! Thanks! Thread resolved!