#ifndef _MSH_H

#define _MSH_H

#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "mystring.h"
#include "list.h"

class cmd
{
  public:
    int parseerr;          // 0 = No errors, 1 = Unparsed, >1 = Error
    int background;        // 0 = waitpid, 1 = don't wait

    List<String> args;     // Parsed argument list
                           // args[0] is the command to execute

    cmd *pipefrom;         // The command piping into this one
    cmd *pipeto;           // The command this one pipes into

    int stdin_redir_type;  // 0 = none, 1 = <
    String stdin_redir;    // Name of the file to direct from
    int stdout_redir_type; // 0 = none, 1 = >, 2 = >> (append)
    String stdout_redir;   // Name of the file to direct to

    cmd(void) {parseerr=1;pipefrom=pipeto=0;stdin_redir_type=stdout_redir_type=background=0;}
    void reset()
    {
      cmd *c = pipeto;
      while(c)
      {
        pipeto = c->pipeto;
        delete c;
        c = pipeto;
      }
      parseerr=1;
      background=0;
      args.clear();
      pipefrom=0;
      pipeto=0;
      stdin_redir_type=0;
      stdout_redir_type=0;
    }

    // Parsing
    void parse(char *str, cmd *from);
      void addarg(const char *s);

    // Execution
    void cmdexec();
      void doexec();
        int is_internal(String command);
          void do_internal();
            void do_exit();
            void do_which();
              char *findpath(const char *file);
            void do_chdir();
            void do_kill();
            void do_setenv();
            void do_mkdir();
        int is_plusx(const char *file);
        char **buildargv();
};

char *getcommand();
static void errhandler(int sig);

#endif