iostream - chaining c++ streams -


I was thinking about "chaining" of two C ++ iostreams to filter the input twice, I zlib compressed to

I am using gzstreams to read files and I was thinking of coding a stream that reads from a stream and encoding converts. Possibly by passing an open stream as constructor parameter ... How do you feel that it can be done best?

I have not used it, but can be helpful in promoting.

With an example I found, which applies an output filter that indents output: 

  boost :: iostreams:: filtering_stream out; Indent_filter :: push (out, 2); Out.push (std :: court);

and use it like this: 

  outside < & Lt; "Hello filter! \ N" & lt; & Lt; Indent_in & lt; & Lt; "This is \ n" & lt; & Lt; "Indent \ n" & lt; & Lt; Indent_out & lt; & Lt; "Even \ n";

The resulting output will be: 

  Hello filter! It is indented as

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