mystring.h
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#ifndef __MYSTRING_H__
#define __MYSTRING_H__
class mystring
{
char *dane;
public:
mystring ():dane (0)
{
};
~mystring ()
{
delete[]dane;
};
mystring (const char *s)
{
if (s)
{
dane = new char[strlen (s) + 1];
strcpy (dane, s);
}
else
dane = 0;
};
unsigned int length () const
{
if (!dane)
return 0;
else
return strlen (dane);
}
mystring (const mystring & src)
{
if (src.dane)
{
dane = new char[strlen (src.dane) + 1];
strcpy (dane, src.dane);
}
else
dane = 0;
};
mystring & operator= (const mystring & src)
{
if (this != &src)
{
delete[]dane;
if (src.dane)
{
dane = new char[strlen (src.dane) + 1];
strcpy (dane, src.dane);
}
else
dane = 0;
};
return *this;
}
mystring & operator+= (const mystring & src)
{
char *newstr = new char[length () + src.length () + 1];
if (length ())
strcpy (newstr, dane);
else
newstr[0] = '\0';
if (src.length ())
strcat (newstr, src.dane);
delete[]dane;
dane = newstr;
return *this;
}
operator char*()
{
if(!dane)
{
dane=new char[1];
dane[0]='\0';
}
return dane;
};
friend ostream & operator<< (ostream & o, const mystring & s)
{
if (s.dane)
o << s.dane;
return o;
}
};
inline mystring operator+ (const mystring & s1, const mystring & s2)
{
mystring s (s1);
return s += s2;
}
#endif /* __MYSTRING_H__ */