[xsd-users] Streaming

[Boris Kolpackov]

Hi Vincent,

Vincent Jacques <vincent at vincent-jacques.net> writes:

> Since I do need to process a tag as soon as it is finished, I've tried
> to read only 1 byte each time Xerces request, and it works exactly as I
> was expecting.
>
> I'll write a "fast_std_input_source" and use the method document::parse
> which takes a xercesc::InputSource&.
>
> I'm aware that it would not be efficient on big documents, but mine will
> stay small enought.

You can make it a bit more efficient by asking the underlying buffer
for how much data is available to read and using that value instead
of just 1 byte. The way to get this value is by calling the in_avail()
function on the streambuf object associated with the stream:

istream& is = ...
streamsize n = is.rdbuf ()->in_avail ();


hth,
-boris
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