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// 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 <iterator>
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
std::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
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