/*
 * Copyright © 2007 Pippijn van Steenhoven / The Ermyth Team
 * Rights to this code are as documented in doc/pod/gplicense.pod.
 *
 * Various string structures and functions.
 *
 * $Id: string.h,v 1.2 2007/08/28 17:08:07 pippijn Exp $
 */

#ifndef ERMYTH_STRING_H
#define ERMYTH_STRING_H

void assign (char *dst, char const *src, size_t maxlen);

template<size_t N>
inline void assign (char (&dst)[N], char const *src)
{
  assign ((char *)&dst, src, N);
}

/* 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 ();
  }

  friend std::ostream &operator << (std::ostream &os, ststr const &rhs)
  {
    os << rhs.c_str ();
    return os;
  }

private:
  char const * const m_rep;
};

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

  ~dynstr ()
  {
    delete[] m_rep;
  }

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

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

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

  size_t length ()
  {
    return pos;
  }

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

  int append (char const c);
  int append_nonul (char const c);
  int append (char const * const src, size_t size);
  int append_nonul (char const * const src, size_t size);

  int append_unguarded (char const c);
  int append_unguarded_nonul (char const c);
  int append_unguarded (char const * const src, size_t size);
  int append_unguarded_nonul (char const * const src, size_t size);

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

#endif