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/* string.h
*
*/
#ifndef _MYSTRING_
#define _MYSTRING_
#include <cstring>
#include <iostream>
class MyString
{
friend bool operator==(const MyString&, const MyString &);
friend std::ostream& operator<<(std::ostream&, const MyString &);
private:
char *str_;
int length_;
MyString(int);
static size_t count;
public:
MyString();
explicit MyString(char);
/* allow implicit conversions, it is useful */
MyString(const char *);
/* copy constructor */
MyString(const MyString &);
MyString& operator=(const MyString &);
~MyString();
int length() const;
int indexOf(char, int = 0) const;
bool isSubstring(const MyString &) const;
bool isSubstring(const char *) const;
MyString& concat(const MyString &);
MyString& concat(const char *);
void printStr(void) const;
static size_t getCount(void);
bool operator!(void) const;
char& operator[](int);
char operator[](int) const;
operator char*(); /* outward class conversion into char * */
operator const char*() const;
};
bool operator==(const MyString&, const MyString &);
bool operator!=(const MyString&, const MyString &);
std::ostream& operator<<(std::ostream&, const MyString &);
/* it is always good idea to have default ctor to avoid manual init later
* for data types that include this class type
*/
inline MyString::MyString() : str_(new char[1]), length_(0)
{
str_[0] = '\0';
this->count++;
}
inline MyString::MyString(char ch) : str_(new char[2]), length_(1)
{
str_[0] = ch;
str_[1] = '\0';
this->count++;
}
inline int MyString::length() const
{
return length_;
}
inline void MyString::printStr(void) const
{
std::cout << "length: " << length_ << ", value: \"" << str_ << "\"";
}
inline size_t MyString::getCount(void)
{
return count;
}
#endif
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