_collate.h

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/*
 * Copyright (c) 1999
 * Silicon Graphics Computer Systems, Inc.
 *
 * Copyright (c) 1999
 * Boris Fomitchev
 *
 * This material is provided "as is", with absolutely no warranty expressed
 * or implied. Any use is at your own risk.
 *
 * Permission to use or copy this software for any purpose is hereby granted
 * without fee, provided the above notices are retained on all copies.
 * Permission to modify the code and to distribute modified code is granted,
 * provided the above notices are retained, and a notice that the code was
 * modified is included with the above copyright notice.
 *
 */
// WARNING: This is an internal header file, included by other C++
// standard library headers.  You should not attempt to use this header
// file directly.

#ifndef _STLP_INTERNAL_COLLATE_H
#define _STLP_INTERNAL_COLLATE_H

#ifndef _STLP_C_LOCALE_H
# include <stl/c_locale.h>
#endif

#ifndef _STLP_INTERNAL_LOCALE_H
# include <stl/_locale.h>
#endif

#ifndef _STLP_INTERNAL_STRING_H
# include <stl/_string.h>
#endif

_STLP_BEGIN_NAMESPACE

template <class _CharT> class collate {};
template <class _CharT> class collate_byname {};

_STLP_TEMPLATE_NULL
class _STLP_CLASS_DECLSPEC collate<char> : public locale::facet {
public:
  typedef char   char_type;
  typedef string string_type;

  explicit collate(size_t __refs = 0) : locale::facet(__refs) {}

  int compare(const char* __low1, const char* __high1,
              const char* __low2, const char* __high2) const {
    return do_compare( __low1, __high1, __low2, __high2);
  }

  string_type transform(const char* __low, const char* __high) const {
    return do_transform(__low, __high);
  }

  long hash(const char* __low, const char* __high) const
    { return do_hash(__low, __high); }

  static _STLP_STATIC_DECLSPEC locale::id id;

protected:
  ~collate();

  virtual int do_compare(const char*, const char*,
                         const char*, const char*) const;
  virtual string_type do_transform(const char*, const char*) const;
  virtual long do_hash(const char*, const char*) const;
private:
  collate(const collate<char>&);
  collate<char>& operator =(const collate<char>&);
};

# ifndef _STLP_NO_WCHAR_T

_STLP_TEMPLATE_NULL
class _STLP_CLASS_DECLSPEC collate<wchar_t> : public locale::facet {
public:
  typedef wchar_t char_type;
  typedef wstring string_type;

  explicit collate(size_t __refs = 0) : locale::facet(__refs) {}

  int compare(const wchar_t* __low1, const wchar_t* __high1,
              const wchar_t* __low2, const wchar_t* __high2) const {
    return do_compare( __low1, __high1, __low2, __high2);
  }

  string_type transform(const wchar_t* __low, const wchar_t* __high) const {
    return do_transform(__low, __high);
  }

  long hash(const wchar_t* __low, const wchar_t* __high) const
    { return do_hash(__low, __high); }

  static _STLP_STATIC_DECLSPEC locale::id id;

protected:
  ~collate();

  virtual int do_compare(const wchar_t*, const wchar_t*,
                         const wchar_t*, const wchar_t*) const;
  virtual string_type do_transform(const wchar_t*, const wchar_t*) const;
  virtual long do_hash(const wchar_t* __low, const wchar_t* __high) const;
private:
  collate(const collate<wchar_t>&);
  collate<wchar_t>& operator = (const collate<wchar_t>&);
};

# endif /* NO_WCHAR_T */

_STLP_TEMPLATE_NULL
class _STLP_CLASS_DECLSPEC collate_byname<char>: public collate<char> {
  friend class _Locale_impl;
public:
  explicit collate_byname(const char* __name, size_t __refs = 0);

protected:
  ~collate_byname();

  virtual int do_compare(const char*, const char*,
                         const char*, const char*) const;
  virtual string_type do_transform(const char*, const char*) const;

private:
  collate_byname(_Locale_collate *__coll)
    : _M_collate(__coll) {}
  _Locale_collate* _M_collate;
  collate_byname(const collate_byname<char>&);
  collate_byname<char>& operator =(const collate_byname<char>&);
};

# ifndef _STLP_NO_WCHAR_T

_STLP_TEMPLATE_NULL
class _STLP_CLASS_DECLSPEC collate_byname<wchar_t>: public collate<wchar_t> {
  friend class _Locale_impl;
public:
  explicit collate_byname(const char * __name, size_t __refs = 0);

protected:
  ~collate_byname();

  virtual int do_compare(const wchar_t*, const wchar_t*,
                         const wchar_t*, const wchar_t*) const;
  virtual string_type do_transform(const wchar_t*, const wchar_t*) const;

private:
  collate_byname(_Locale_collate *__coll)
    : _M_collate(__coll) {}
  _Locale_collate* _M_collate;
  collate_byname(const collate_byname<wchar_t>&);
  collate_byname<wchar_t>& operator =(const collate_byname<wchar_t>&);
};

# endif /* NO_WCHAR_T */

template <class _CharT, class _Traits, class _Alloc>
bool
__locale_do_operator_call (const locale& __loc,
                           const basic_string<_CharT, _Traits, _Alloc>& __x,
                           const basic_string<_CharT, _Traits, _Alloc>& __y) {
  collate<_CharT> const& __coll = use_facet<collate<_CharT> >(__loc);
  return __coll.compare(__x.data(), __x.data() + __x.size(),
                        __y.data(), __y.data() + __y.size()) < 0;
}

_STLP_END_NAMESPACE

#endif /* _STLP_INTERNAL_COLLATE_H */

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