// Boost string_algo library trim.hpp header file ---------------------------// | |
// Copyright Pavol Droba 2002-2003. | |
// | |
// Distributed under the Boost Software License, Version 1.0. | |
// (See accompanying file LICENSE_1_0.txt or copy at | |
// http://www.boost.org/LICENSE_1_0.txt) | |
// See http://www.boost.org/ for updates, documentation, and revision history. | |
#ifndef BOOST_STRING_TRIM_DETAIL_HPP | |
#define BOOST_STRING_TRIM_DETAIL_HPP | |
#include <boost/algorithm/string/config.hpp> | |
#include <boost/detail/iterator.hpp> | |
namespace boost { | |
namespace algorithm { | |
namespace detail { | |
// trim iterator helper -----------------------------------------------// | |
template< typename ForwardIteratorT, typename PredicateT > | |
inline ForwardIteratorT trim_end_iter_select( | |
ForwardIteratorT InBegin, | |
ForwardIteratorT InEnd, | |
PredicateT IsSpace, | |
std::forward_iterator_tag ) | |
{ | |
ForwardIteratorT TrimIt=InBegin; | |
for( ForwardIteratorT It=InBegin; It!=InEnd; ++It ) | |
{ | |
if ( !IsSpace(*It) ) | |
{ | |
TrimIt=It; | |
++TrimIt; | |
} | |
} | |
return TrimIt; | |
} | |
template< typename ForwardIteratorT, typename PredicateT > | |
inline ForwardIteratorT trim_end_iter_select( | |
ForwardIteratorT InBegin, | |
ForwardIteratorT InEnd, | |
PredicateT IsSpace, | |
std::bidirectional_iterator_tag ) | |
{ | |
for( ForwardIteratorT It=InEnd; It!=InBegin; ) | |
{ | |
if ( !IsSpace(*(--It)) ) | |
return ++It; | |
} | |
return InBegin; | |
} | |
// Search for first non matching character from the beginning of the sequence | |
template< typename ForwardIteratorT, typename PredicateT > | |
inline ForwardIteratorT trim_begin( | |
ForwardIteratorT InBegin, | |
ForwardIteratorT InEnd, | |
PredicateT IsSpace ) | |
{ | |
ForwardIteratorT It=InBegin; | |
for(; It!=InEnd; ++It ) | |
{ | |
if (!IsSpace(*It)) | |
return It; | |
} | |
return It; | |
} | |
// Search for first non matching character from the end of the sequence | |
template< typename ForwardIteratorT, typename PredicateT > | |
inline ForwardIteratorT trim_end( | |
ForwardIteratorT InBegin, | |
ForwardIteratorT InEnd, | |
PredicateT IsSpace ) | |
{ | |
typedef BOOST_STRING_TYPENAME boost::detail:: | |
iterator_traits<ForwardIteratorT>::iterator_category category; | |
return ::boost::algorithm::detail::trim_end_iter_select( InBegin, InEnd, IsSpace, category() ); | |
} | |
} // namespace detail | |
} // namespace algorithm | |
} // namespace boost | |
#endif // BOOST_STRING_TRIM_DETAIL_HPP |