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Home » Community » U++ community news and announcements » FilterStreams
FilterStreams [message #39150] Tue, 19 February 2013 11:06
mirek is currently offline  mirek
Messages: 13975
Registered: November 2005
Ultimate Member
New InFilterStream and OutFilterStream are classes intended for gluing input or output stream with some filter, typically with compression object. InFilterStream can be alternatively used to convert any data source to input stream.

reference/FilterStream:

#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN
{
	String path = GetHomeDirFile("test.gz");
	{
		FileOut fout(path);
		Zlib zlib;
		OutFilterStream out(fout, zlib);
		zlib.GZip().Compress();
		out.Put("Hello world!");
		out.Close();
	}

	{
		FileIn fin(path);
		Zlib zlib;
		InFilterStream in(fin, zlib);
		zlib.GZip().Decompress();
		LOG(in.GetLine());
	}


	{
		HttpRequest http("www.ultimatepp.org");
		InFilterStream in;
		http.WhenContent = callback(&in, &InFilterStream::Out);
		in.More = callback(&http, &HttpRequest::Do);
		http.Blocking();
		while(!in.IsEof())
			LOG(in.GetLine());
	}
}
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