procline.c

LINUX下VI编写的SHELL工具LINUX下VI编写的SHELL工具

//procline.c

#include "smallsh.h"

int procline(void)
{
	char *arg [MAXARG+1];
 	int toktype;
  	int narg;
   	int type;
         
    narg = 0;
    for(;;)
    {
    	switch(toktype = gettok(&arg[narg]))
   		{
     		case ARG:
       			if(narg < MAXARG)
		   			narg++; break;
        	case EOL:
         	case SEMICOLON:
          	case AMPERSAND:
           		if(toktype == AMPERSAND)
           			type = BACKGROUND;
              	else
               		type = FOREGROUND;
               		
               	if(narg != 0)
                {
                	arg[narg] = NULL;
                 	runcommand(arg,type);
                }
                
                if(toktype == EOL)
                	return;
               	narg = 0; break;
		}
	}
}