#include <stdio.h>

#include <sys/types.h>

#include <unistd.h>

#include <stdlib.h>

#include <signal.h>

#include <errno.h>

#include<string.h>

#include<sys/wait.h>

#define INPUT_STRING_SIZE 80

#define NORMAL 00

#define OUTPUT_REDIRECTION 11

#define INPUT_REDIRECTION 22

#define BACKGROUND 44

#define OUTPUT_APP 55

int parse(char *inputString, char *cmdArgv[], char **supplementPtr, int *modePtr)

{

int cmdArgc = 0, terminate = 0;

char *srcPtr = inputString;

//printf("%s\n",srcPtr );

//printf("parse fun%sends", inputString);

while(*srcPtr != '\0' && terminate == 0)

{

if(*srcPtr!=' ' && *srcPtr!='&'){

*cmdArgv = srcPtr;

cmdArgc++;

cmdArgv++;

// printf("%sfirst one\n",cmdArgv[0] );

}

while(*srcPtr != ' ' && *srcPtr != '\t' && *srcPtr != '\0' && *srcPtr != '\n' && terminate == 0)

{

switch(*srcPtr)

{

case '&':

*modePtr = BACKGROUND;

break;

}

srcPtr++;

}

while((*srcPtr == ' ' || *srcPtr == '\t' || *srcPtr == '\n') && terminate == 0)

{

*srcPtr = '\0';

srcPtr++;

}

}

//printf("%sfirst one\n",cmdArgv[0] );

/*srcPtr++;

*srcPtr = '\0';

destPtr--;*/

*cmdArgv = '\0';

//fprintf(stderr, "checking%s %s\n",cmdArgv[0-cmdArgc],cmdArgv[1-cmdArgc]);

return cmdArgc;

}