// mstring.cpp: implementation of the mstring class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "mstring.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////


mstring::mstring(void)
{
	data[0]=0;
//done_memory=false;
}

mstring::mstring(char* a)
{
	this->set_memory(strlen(a));
	sprintf(data,"%s",a);
}



mstring::~mstring(void)
{
	remove_memory();
}
mstring mstring::operator+( mstring a)
{
	mstring b;
	b.set_memory(this->length()+a.length());
	sprintf(b.data,"%s%s",data,a.data);
	return b;

}

mstring mstring::operator+(char * a)
{
	mstring b;
	b.set_memory(this->length()+strlen(a));
	sprintf(b.data,"%s%s",data,a);
	return b;
}

mstring mstring::operator=( mstring a)
{
	
	
	this->set_memory(strlen(a.data));
	sprintf(data,"%s",a.data);

	return a;
}

mstring mstring::operator=(char * a)
{


	this->set_memory(strlen(a));

	//data=new char[strlen(a)];
	sprintf(data,"%s",a);

	return *this;
}

mstring mstring::mid( int a,int b)
{
	
	
mstring ts("");
if(a<0||b>length()||a>b) return ts;
int i;
for(i=a;i<b;i++){
	ts.data[i-a]=data[i];
}
ts.data[b-a]=0;
	return ts;
}

mstring mstring::edge( int a,int b)
{
	
	
mstring ts("");
if(a<0||b>length()||a>b) return ts;
int i;
for(i=0;i<a;i++){
	ts.data[i]=data[i];
}
for(i=b;i<length();i++){
	ts.data[i-b+a]=data[i];
}
ts.data[length()-b+a]=0;
	return ts;
}

bool mstring::operator==( mstring a)
{
	
	if(this->length()!=a.length()) return false;
	int i;
	for(i=0;i<this->length();i++){
		if(this->data[i]!=a.data[i]) return false;
	}
	return true;
}

bool mstring::operator==(char * a)
{


	
	if(this->length()!=strlen(a)) return false;
	int i;
	for(i=0;i<this->length();i++){
		if(this->data[i]!=a[i]) return false;
	}
	return true;
}



int mstring::operator[]( mstring a)
{
	
	if(this->length()<a.length()) return -1;
	if(this->length()==0) return -1;

	int i;
	for(i=0;i<=this->length()-a.length();i++){
		if(mid(i,i+a.length())==a) return i;
	}
	return -1;
}

int mstring::operator[](char * a)
{

	if(this->length()<strlen(a)) return -1;
	if(this->length()==0) return -1;

	int i;
	for(i=0;i<=this->length()-strlen(a);i++){
		if(mid(i,i+strlen(a))==a) return i;
	}
	return -1;
}


void mstring::set_memory(int a)
{
	//if(done_memory){delete []data;}
	//if(a>2000);
	//data=new char[a];
//	done_memory=true;

}
void mstring::remove_memory()
{
	//if(done_memory){delete [] this->data;}


}

int mstring::length()
{
	return strlen(data);

}