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pp-internal.h

/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
** Copyright 2005 Roberto Raggi <roberto@kdevelop.org>
**
** This file is part of $PRODUCT$.
**
** $CPP_LICENSE$
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef PP_INTERNAL_H
#define PP_INTERNAL_H

#include <algorithm>

namespace rpp {

namespace _PP_internal
{

inline void extract_file_path (const std::string &__filename, std::string *__filepath)
{
  std::size_t __index = __filename.rfind (PATH_SEPARATOR);

  if (__index == std::string::npos)
    *__filepath = "/";

  else
    __filepath->assign (__filename, 0, __index + 1);
}

template <typename _OutputIterator>
void output_line(const std::string &__filename, int __line, _OutputIterator __result)
{
  std::string __msg;

  __msg += "# ";

  char __line_descr[16];
  pp_snprintf (__line_descr, 16, "%d", __line);
  __msg += __line_descr;

  __msg += " \"";

  if (__filename.empty ())
    __msg += "<internal>";
  else
    __msg += __filename;

  __msg += "\"\n";
  std::copy (__msg.begin (), __msg.end (), __result);
}

template <typename _InputIterator>
inline bool comment_p (_InputIterator __first, _InputIterator __last) /*const*/
{
  if (__first == __last)
    return false;

  if (*__first != '/')
    return false;

  if (++__first == __last)
    return false;

  return (*__first == '/' || *__first == '*');
}

struct _Compare_string: public std::binary_function<bool, pp_fast_string const *, pp_fast_string const *>
{
  inline bool operator () (pp_fast_string const *__lhs, pp_fast_string const *__rhs) const
  { return *__lhs < *__rhs; }
};

struct _Equal_to_string: public std::binary_function<bool, pp_fast_string const *, pp_fast_string const *>
{
  inline bool operator () (pp_fast_string const *__lhs, pp_fast_string const *__rhs) const
  { return *__lhs == *__rhs; }
};

struct _Hash_string: public std::unary_function<std::size_t, pp_fast_string const *>
{
  inline std::size_t operator () (pp_fast_string const *__s) const
  {
    char const *__ptr = __s->begin ();
    std::size_t __size = __s->size ();
    std::size_t __h = 0;

    for (std::size_t i = 0; i < __size; ++i)
      __h = (__h << 5) - __h + __ptr [i];

    return __h;
  }
};

} // _PP_internal

} // namespace rpp

#endif // PP_INTERNAL_H

// kate: space-indent on; indent-width 2; replace-tabs on;

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