#include "stringUtil.h"

using namespace std;

//MSVC++ contains a know bug in the getline function for strings.  This function
//acts as a fix to allow you to read input string from the user.  When getline
//is called one line, ending w/ the newline character, will be taken from the 
//specified stream and placed in the s string output parameter.    
//INPUT : is - A stream denoting where input is arriving from, e.g. cin, a file, etc.
//INPUT :  d - this character denotes the char value on which we end our getline.  
//			    e.g if you enter '.' for this variable, the string will stop when
//			    the first '.' is encountered.  This value is '\n' by default, so
//			    if you want to simply break on the new line, YOU DON'T have to enter
//				anything for this parameter.
//OUTPUT      s - contains the string entered by the user.
//
//
//EXAMPLE :
//string sentence;
//getline(cin,sentence);
//

void getline( istream& is, string& s, char d) {   
	fflush(stdin);
	char getbuff[512];
	is.getline(getbuff,512, d);   
	s = getbuff;
}

//So that char * can be avioded in this homework, we have provided you with a 
//wrapper function for strok, which you used in the last homework.  This function
//behaves exactly as strtok except for 2 small changes.  1) the returned token
//is a string and NOT a char *.  2) instead of passing NULL to the function to 
//continue parsing a string, pass "", the empty string.  Similiarly, when there
//are no tokens left in the string to return, newStrtok will return "", instead
//of NULL.
//INPUT:  currString - represents the string to be parsed.  After the initial call
//					   to the fucntion, this value should be "".
//	      seps  - this string represnts the values on which to break tokens.  Its usage
//				  is exactly the same as strtok, except that the value is a string, not a char *
//
//OUTPUT:   returns the next token in the string, seperated by the chars in the seps string.
  
string newStrtok(string currString, string seps ) {
	static char tempStr[512];
	char *tempToken;
	string returnStr;
	int val = currString.size();
	if(currString.size()==0) 
		tempToken = strtok(NULL,seps.c_str() );
	else {
		for(int x=0;x<currString.size();x++)
			tempStr[x]=currString[x];
		tempStr[x]=NULL;
		tempToken = strtok(tempStr,seps.c_str() );
	}
	if(tempToken == NULL)
		returnStr = "";
	else
		returnStr=tempToken;
	return returnStr;
}