On Sun, Sep 16, 2012 at 11:54 AM, Boris Schaeling [via Boost] <ml-node+s2283326n4635834h32@n4.nabble.com> wrote:
On Sun, 16 Sep 2012 05:29:29 +0200, alfC <[hidden email]> wrote:
[...]ok, thanks for the info. Is that a question for me? I am not familiar with these objects. Also I use Linux only for development. These objects didn't seem to be necessary in Boost.Process GSOC2010.
That's true (I see you are familiar with previous versions :). We had a handle type which was defined by Boost.Process. We also had stream types like pistream and postream. All of this has been replaced with types from Boost.Iostreams. We could still define all of this in Boost.Process theoretically. But I think it makes more sense if we reuse other Boost libraries and concentrate in Boost.Process on what that library really is about (especially after working on it for six years ;).
I guess it is not not late to provide "convenience" pistream/postream/piostream classes that wrap up all the complexity. boost::pistream pis("/bin/ls"); for(std::string line; std::getline(pis, line); ){ std::cout << "line: " << line << std::endl; } std::cout << "end" << std::endl;
[...]ok, since there is no conclusive solution, so maybe to end this thread let me file this as a possible bug (or confirm it is the expected behavior), the symptom is that the program never ends (linux, fedora 17, boost 1.48):
Can you try this program? It works for me:
Thanks, the program worked (boost 1.48) and I posted the solution in stakoverflow: http://stackoverflow.com/a/12469478/225186 I don't have any idea why this works vs. the other. I wonder if I have to do the same for doing output to the process. Thanks, Alfredo
----- #include <boost/process.hpp> #include <boost/iostreams/device/file_descriptor.hpp> #include <boost/iostreams/stream.hpp> #include <string>
using namespace boost::process; using namespace boost::process::initializers; using namespace boost::iostreams;
int main() { boost::process::pipe p = create_pipe(); { file_descriptor_sink sink(p.sink, close_handle); execute(run_exe("/bin/ls"), bind_stdout(sink)); } file_descriptor_source source(p.source, close_handle); stream<file_descriptor_source> is(source); std::string s; while(std::getline(is, s)){ std::cout << "read: " << s << std::endl; } std::clog << "end" << std::endl; } -----
Boris
[...]
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