Artyom wrote:
Or maybe something like
command_line_params ls_params;
ls_params.add("--reverse"); ls_params.add("-l");
command_line_params grep_params; grep_params.add("^d");
grep.stdin().connect(ls.stdout());
ls.spawn(ls_params); grep.spawn(grep_params);
+- - something like that.
Or even better:
pipe::connect(ls.stdout(),grep.stdin());
ls.spawn("--reverse","-l","/usr/bin"); grep.spawn("^d");
ls.wait(); grep.wait();
I think this would be much more readable and what is important maintainable.
I've posted a similar approach in the original review thread with 'arg' and 'args' classes with operator() usage inspired by boost spirit's symbols class. The operator is templated and uses boost::lexical_cast to convert to a std::[w]string as appropriate. arg("-d")(some_path_type)("-count")(123)("--do_it=abc") returns an args instance. https://goo.gl/NvRAH has some initial documentation and describes an approach that's similar to what you describe. A zip file is attached to the posting http://goo.gl/8R6cR I was thinking that Stjepan Rajko's previously reviewed Data Flow library's interface was very applicable to the child process domain. It's described at http://dancinghacker.com/code/dataflow/dataflow/introduction/dataflow.html. Jeff