RE: [boost] Re: process control, fork/pipe, etc.

From: Jeremy Siek (jsiek_at_[hidden])
Date: 2002-07-26 16:49:26

Close, but I'd also want another stream for sending stuff from the parent
to the child, the child's stdin.

On Fri, 26 Jul 2002, Jeff Garland wrote:

jeff> How about this:
jeff>
jeff>   //usage:
jeff>   systemistream s("./hello.exe"); //execute hello.cpp put results stream
jeff>   std::string data;
jeff>   while (getline(s,data)) {
jeff>     std::cout << data << std::endl;
jeff>   }
jeff>
jeff> //! An input stream built from the result of running a shell command
jeff> /*! This class is intended to facilitate large scale integration by similar
jeff>  *  to the perl "open" command by combining the concept of an input stream
jeff>  *  and the common idea of a spawning a subprocess to perform a task.
jeff>  *
jeff>  *  The class takes the definition optionally tasks the the subprocess
jeff>  *  execution string as the a construction argument and will automatically
jeff>  *  spawn the child process.  Alternatively, the child process can be created
jeff>  *  later using the open method.
jeff>  */
jeff> class systemistream :  public std::basic_istream<char, std::char_traits<char> > {
jeff> public:
jeff>   systemistream(const std::string& command="");
jeff>   ~systemistream();
jeff>   void open(const std::string& command);
jeff>   void close();
jeff> private:
jeff>   std::basic_filebuf<char, std::char_traits<char> >* buf_;
jeff>
jeff> };
jeff>
jeff> It's a bit of a hack, but it works...
jeff>
jeff> Jeff
jeff> _______________________________________________
jeff> Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
jeff>

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 Jeremy Siek                          http://php.indiana.edu/~jsiek/
 Ph.D. Student, Indiana Univ. B'ton   email: jsiek_at_[hidden]
 C++ Booster (http://www.boost.org)   office phone: [phone]
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