/**
 * string.h: Various string structures and functions.
 *
 * Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team
 * Rights to this code are as documented in doc/pod/gplicense.pod.
 *
 * $Id: string.h,v 1.6 2007/09/22 14:27:26 pippijn dead $
 */

#ifndef ERMYTH_STRING_H
#define ERMYTH_STRING_H

#include <cstddef>
#include <cstring>

/* static string */
struct ststr
{
  ststr (char const * const initstr)
  : m_rep (initstr)
  {
  }

  ststr (ststr &initstr)
  : m_rep (initstr)
  {
  }

  char const *c_str () const
  {
    return m_rep;
  }

  operator char const * () const
  {
    return c_str ();
  }

private:
  char const * const m_rep;
};

// dynamic string
struct dynstr
{
  dynstr (size_t initlength = 32)
  : m_rep (new char[initlength]), pos (0), length (initlength)
  {
  }

  ~dynstr ()
  {
    delete[] m_rep;
  }

  void clear ()
  {
    m_rep[0] = '\0';
    pos = 0;
  }

  char const *c_str () const
  {
    return m_rep;
  }

  operator char const * () const
  {
    return c_str ();
  }

  size_t size ()
  {
    return length;
  }

  dynstr &operator = (char const *rhs)
  {
    clear ();
    add (rhs, strlen (rhs));
    return *this;
  }

  int add (char const c);
  int add (char const * const src, size_t size);
  int add (char const * const src)
  {
    return add (src, strlen (src));
  }

private:
  char *m_rep;
  size_t pos;
  size_t length;
};

#endif