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