CoProc.h

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// $Id: CoProc.h,v 1.1.1.1 2009/07/06 23:57:25 eml Exp $

#ifndef GCP_UTIL_COPROC_H
#define GCP_UTIL_COPROC_H

#include <iostream>
#include <vector>

namespace gcp {
  namespace util {

    class CoProc;

    // Define a class for managing a spawned process whose stdout and
    // stderr are captured by the parent

    class CoProc {
    public:

      class Pipe {

      public:

    ~Pipe();

    FILE* readFp();
    FILE* writeFp();

    int readFd();
    int writeFd();

    void closeForWrite();
    void closeForRead();

    void close();

      private:

    friend class CoProc;

    int fd_[2];     // pair of file descriptors

    Pipe();
      };

      CoProc(std::string exe);

      CoProc(char *exe);

      CoProc(char *exe, FILE** stdInFp, FILE** stdOutFp, FILE** stdErrFp);

      CoProc(char *exe, char** argv, 
         FILE** stdInFp, FILE** stdOutFp, FILE** stdErrFp);

      void fork(char *exe, char** argv, 
        FILE** stdInFp, FILE** stdOutFp, FILE** stdErrFp);

      CoProc::Pipe* getPipe();

      CoProc::Pipe* stdIn();
      CoProc::Pipe* stdOut();
      CoProc::Pipe* stdErr();

      virtual ~CoProc();
      
      // Split a command string into separate tokens

      static std::vector<std::string> split(std::string command);

      int readFd();
      int writeFd();

    private:

      int pid_;
      CoProc::Pipe* stdIn_;
      CoProc::Pipe* stdOut_;
      CoProc::Pipe* stdErr_;

    }; // End class CoProc
    
  } // End namespace util
} // End namespace gcp



#endif // End #ifndef GCP_UTIL_COPROC_H