main.c

#include <stdio.h>
#include <stdlib.h>
#include "global.h"
#include "REPL/setup.h"
#include "REPL/prompt.h"
#include "REPL/parse.h"
#include "REPL/read.h"
#include "REPL/execute.h"
#include "UTILS/memmy.h"
#include "main.h"

/* Global const defines */
const char* EXIT = "exit";
const char* ECHO = "echo";
const char* ETIME = "etime";
const char* LIMITS = "limits";
const char* EXPORT = "export";
const char* CD = "cd";
const char* _DELIMS = " \n";
const char* _PIPES = "|<>";
const char* PREV_DIR_I = "..";
const char* PREV_DIR_II = "./";
const char* ARGS = "ARGS";
const int ACOLS = 255;

/* Globals */
char* cuser;
int margc = 1;
int run = 1;
int exec = 1;
int runbg = 0;
pid_t bgproc = 0;

/* ALL EXITING TASKS DONE HERE */
int exit_shell(){
	return purge_memmy();
}

int main(int argc, char* args[])
{
	char *line;
	char cmd[255][255];


 	if(!init_memmy()) return 1;	/* Address Mem intialization*/

 	cuser = set_string(255);	/* User handle */
 	cuser = getenv("USER");

	line = set_string(255);		/* current command line init */

	while(run)
	{
		shell_loop(line, cmd);
	}
	
	return exit_shell();
}

int shell_loop(char * line, char cmd[255][255]) {
        _setup(cmd);
        _prompt();

        if(_read(line)){
                /* Transform input
                        Match against patterns */
                _parse(line, cmd);
                if (exec) _execute(cmd);
        	        /* cleanup */
        } else {
	      	run = 0;
        }

	return 0;
}