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845 lines
31 KiB
C++
845 lines
31 KiB
C++
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// Boost string_algo library erase.hpp header file ---------------------------//
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// Copyright Pavol Droba 2002-2006.
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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_ERASE_HPP
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#define BOOST_STRING_ERASE_HPP
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#include <boost/algorithm/string/config.hpp>
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#include <boost/range/iterator_range_core.hpp>
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#include <boost/range/begin.hpp>
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#include <boost/range/end.hpp>
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#include <boost/range/iterator.hpp>
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#include <boost/range/const_iterator.hpp>
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#include <boost/algorithm/string/find_format.hpp>
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#include <boost/algorithm/string/finder.hpp>
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#include <boost/algorithm/string/formatter.hpp>
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/*! \file
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Defines various erase algorithms. Each algorithm removes
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part(s) of the input according to a searching criteria.
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*/
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namespace boost {
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namespace algorithm {
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// erase_range -------------------------------------------------------//
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//! Erase range algorithm
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/*!
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Remove the given range from the input. The result is a modified copy of
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the input. It is returned as a sequence or copied to the output iterator.
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\param Output An output iterator to which the result will be copied
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\param Input An input sequence
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\param SearchRange A range in the input to be removed
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\return An output iterator pointing just after the last inserted character or
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a modified copy of the input
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\note The second variant of this function provides the strong exception-safety guarantee
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*/
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template<typename OutputIteratorT, typename RangeT>
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inline OutputIteratorT erase_range_copy(
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OutputIteratorT Output,
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const RangeT& Input,
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const iterator_range<
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BOOST_STRING_TYPENAME
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range_const_iterator<RangeT>::type>& SearchRange )
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{
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return ::boost::algorithm::find_format_copy(
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Output,
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Input,
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::boost::algorithm::range_finder(SearchRange),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase range algorithm
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/*!
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\overload
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*/
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template<typename SequenceT>
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inline SequenceT erase_range_copy(
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const SequenceT& Input,
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const iterator_range<
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BOOST_STRING_TYPENAME
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range_const_iterator<SequenceT>::type>& SearchRange )
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{
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return ::boost::algorithm::find_format_copy(
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Input,
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::boost::algorithm::range_finder(SearchRange),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase range algorithm
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/*!
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Remove the given range from the input.
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The input sequence is modified in-place.
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\param Input An input sequence
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\param SearchRange A range in the input to be removed
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*/
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template<typename SequenceT>
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inline void erase_range(
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SequenceT& Input,
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const iterator_range<
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BOOST_STRING_TYPENAME
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range_iterator<SequenceT>::type>& SearchRange )
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{
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::boost::algorithm::find_format(
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Input,
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::boost::algorithm::range_finder(SearchRange),
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::boost::algorithm::empty_formatter(Input) );
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}
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// erase_first --------------------------------------------------------//
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//! Erase first algorithm
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/*!
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Remove the first occurrence of the substring from the input.
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The result is a modified copy of the input. It is returned as a sequence
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or copied to the output iterator.
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\param Output An output iterator to which the result will be copied
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\param Input An input string
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\param Search A substring to be searched for
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\return An output iterator pointing just after the last inserted character or
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a modified copy of the input
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\note The second variant of this function provides the strong exception-safety guarantee
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*/
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template<
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typename OutputIteratorT,
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typename Range1T,
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typename Range2T>
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inline OutputIteratorT erase_first_copy(
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OutputIteratorT Output,
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const Range1T& Input,
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const Range2T& Search )
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{
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return ::boost::algorithm::find_format_copy(
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Output,
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Input,
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::boost::algorithm::first_finder(Search),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase first algorithm
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/*!
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\overload
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*/
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template<typename SequenceT, typename RangeT>
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inline SequenceT erase_first_copy(
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const SequenceT& Input,
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const RangeT& Search )
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{
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return ::boost::algorithm::find_format_copy(
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Input,
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::boost::algorithm::first_finder(Search),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase first algorithm
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/*!
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Remove the first occurrence of the substring from the input.
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The input sequence is modified in-place.
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\param Input An input string
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\param Search A substring to be searched for.
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*/
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template<typename SequenceT, typename RangeT>
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inline void erase_first(
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SequenceT& Input,
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const RangeT& Search )
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{
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::boost::algorithm::find_format(
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Input,
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::boost::algorithm::first_finder(Search),
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::boost::algorithm::empty_formatter(Input) );
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}
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// erase_first ( case insensitive ) ------------------------------------//
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//! Erase first algorithm ( case insensitive )
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/*!
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Remove the first occurrence of the substring from the input.
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The result is a modified copy of the input. It is returned as a sequence
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or copied to the output iterator.
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Searching is case insensitive.
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\param Output An output iterator to which the result will be copied
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\param Input An input string
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\param Search A substring to be searched for
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\param Loc A locale used for case insensitive comparison
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\return An output iterator pointing just after the last inserted character or
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a modified copy of the input
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\note The second variant of this function provides the strong exception-safety guarantee
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*/
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template<
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typename OutputIteratorT,
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typename Range1T,
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typename Range2T>
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inline OutputIteratorT ierase_first_copy(
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OutputIteratorT Output,
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const Range1T& Input,
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const Range2T& Search,
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const std::locale& Loc=std::locale() )
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{
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return ::boost::algorithm::find_format_copy(
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Output,
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Input,
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::boost::algorithm::first_finder(Search, is_iequal(Loc)),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase first algorithm ( case insensitive )
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/*!
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\overload
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*/
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template<typename SequenceT, typename RangeT>
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inline SequenceT ierase_first_copy(
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const SequenceT& Input,
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const RangeT& Search,
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const std::locale& Loc=std::locale() )
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{
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return ::boost::algorithm::find_format_copy(
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Input,
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::boost::algorithm::first_finder(Search, is_iequal(Loc)),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase first algorithm ( case insensitive )
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/*!
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Remove the first occurrence of the substring from the input.
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The input sequence is modified in-place. Searching is case insensitive.
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\param Input An input string
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\param Search A substring to be searched for
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\param Loc A locale used for case insensitive comparison
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*/
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template<typename SequenceT, typename RangeT>
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inline void ierase_first(
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SequenceT& Input,
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const RangeT& Search,
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const std::locale& Loc=std::locale() )
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{
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::boost::algorithm::find_format(
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Input,
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::boost::algorithm::first_finder(Search, is_iequal(Loc)),
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::boost::algorithm::empty_formatter(Input) );
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}
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// erase_last --------------------------------------------------------//
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//! Erase last algorithm
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/*!
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Remove the last occurrence of the substring from the input.
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The result is a modified copy of the input. It is returned as a sequence
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or copied to the output iterator.
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\param Output An output iterator to which the result will be copied
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\param Input An input string
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\param Search A substring to be searched for.
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\return An output iterator pointing just after the last inserted character or
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a modified copy of the input
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\note The second variant of this function provides the strong exception-safety guarantee
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*/
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template<
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typename OutputIteratorT,
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typename Range1T,
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typename Range2T>
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inline OutputIteratorT erase_last_copy(
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OutputIteratorT Output,
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const Range1T& Input,
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const Range2T& Search )
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{
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return ::boost::algorithm::find_format_copy(
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Output,
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Input,
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::boost::algorithm::last_finder(Search),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase last algorithm
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/*!
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\overload
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*/
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template<typename SequenceT, typename RangeT>
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inline SequenceT erase_last_copy(
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const SequenceT& Input,
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const RangeT& Search )
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{
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return ::boost::algorithm::find_format_copy(
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Input,
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::boost::algorithm::last_finder(Search),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase last algorithm
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/*!
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Remove the last occurrence of the substring from the input.
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The input sequence is modified in-place.
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\param Input An input string
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\param Search A substring to be searched for
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*/
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template<typename SequenceT, typename RangeT>
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inline void erase_last(
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SequenceT& Input,
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const RangeT& Search )
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{
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::boost::algorithm::find_format(
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Input,
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::boost::algorithm::last_finder(Search),
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::boost::algorithm::empty_formatter(Input) );
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}
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// erase_last ( case insensitive ) ------------------------------------//
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//! Erase last algorithm ( case insensitive )
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/*!
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Remove the last occurrence of the substring from the input.
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The result is a modified copy of the input. It is returned as a sequence
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or copied to the output iterator.
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Searching is case insensitive.
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\param Output An output iterator to which the result will be copied
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\param Input An input string
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\param Search A substring to be searched for
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\param Loc A locale used for case insensitive comparison
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\return An output iterator pointing just after the last inserted character or
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a modified copy of the input
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\note The second variant of this function provides the strong exception-safety guarantee
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*/
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template<
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typename OutputIteratorT,
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typename Range1T,
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typename Range2T>
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inline OutputIteratorT ierase_last_copy(
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OutputIteratorT Output,
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const Range1T& Input,
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const Range2T& Search,
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const std::locale& Loc=std::locale() )
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{
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return ::boost::algorithm::find_format_copy(
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Output,
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Input,
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::boost::algorithm::last_finder(Search, is_iequal(Loc)),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase last algorithm ( case insensitive )
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/*!
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\overload
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*/
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template<typename SequenceT, typename RangeT>
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inline SequenceT ierase_last_copy(
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const SequenceT& Input,
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const RangeT& Search,
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const std::locale& Loc=std::locale() )
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{
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return ::boost::algorithm::find_format_copy(
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Input,
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::boost::algorithm::last_finder(Search, is_iequal(Loc)),
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::boost::algorithm::empty_formatter(Input) );
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}
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//! Erase last algorithm ( case insensitive )
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/*!
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Remove the last occurrence of the substring from the input.
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The input sequence is modified in-place. Searching is case insensitive.
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\param Input An input string
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\param Search A substring to be searched for
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\param Loc A locale used for case insensitive comparison
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*/
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template<typename SequenceT, typename RangeT>
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inline void ierase_last(
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SequenceT& Input,
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const RangeT& Search,
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const std::locale& Loc=std::locale() )
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{
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::boost::algorithm::find_format(
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Input,
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::boost::algorithm::last_finder(Search, is_iequal(Loc)),
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::boost::algorithm::empty_formatter(Input) );
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}
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// erase_nth --------------------------------------------------------------------//
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//! Erase nth algorithm
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/*!
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Remove the Nth occurrence of the substring in the input.
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The result is a modified copy of the input. It is returned as a sequence
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or copied to the output iterator.
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||
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||
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\param Output An output iterator to which the result will be copied
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||
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\param Input An input string
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\param Search A substring to be searched for
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\param Nth An index of the match to be replaced. The index is 0-based.
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For negative N, matches are counted from the end of string.
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||
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\return An output iterator pointing just after the last inserted character or
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||
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a modified copy of the input
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||
|
|
|
||
|
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\note The second variant of this function provides the strong exception-safety guarantee
|
||
|
|
*/
|
||
|
|
template<
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||
|
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typename OutputIteratorT,
|
||
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typename Range1T,
|
||
|
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typename Range2T>
|
||
|
|
inline OutputIteratorT erase_nth_copy(
|
||
|
|
OutputIteratorT Output,
|
||
|
|
const Range1T& Input,
|
||
|
|
const Range2T& Search,
|
||
|
|
int Nth )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Output,
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::nth_finder(Search, Nth),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase nth algorithm
|
||
|
|
/*!
|
||
|
|
\overload
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline SequenceT erase_nth_copy(
|
||
|
|
const SequenceT& Input,
|
||
|
|
const RangeT& Search,
|
||
|
|
int Nth )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::nth_finder(Search, Nth),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase nth algorithm
|
||
|
|
/*!
|
||
|
|
Remove the Nth occurrence of the substring in the input.
|
||
|
|
The input sequence is modified in-place.
|
||
|
|
|
||
|
|
\param Input An input string
|
||
|
|
\param Search A substring to be searched for.
|
||
|
|
\param Nth An index of the match to be replaced. The index is 0-based.
|
||
|
|
For negative N, matches are counted from the end of string.
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline void erase_nth(
|
||
|
|
SequenceT& Input,
|
||
|
|
const RangeT& Search,
|
||
|
|
int Nth )
|
||
|
|
{
|
||
|
|
::boost::algorithm::find_format(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::nth_finder(Search, Nth),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// erase_nth ( case insensitive ) ---------------------------------------------//
|
||
|
|
|
||
|
|
//! Erase nth algorithm ( case insensitive )
|
||
|
|
/*!
|
||
|
|
Remove the Nth occurrence of the substring in the input.
|
||
|
|
The result is a modified copy of the input. It is returned as a sequence
|
||
|
|
or copied to the output iterator.
|
||
|
|
Searching is case insensitive.
|
||
|
|
|
||
|
|
\param Output An output iterator to which the result will be copied
|
||
|
|
\param Input An input string
|
||
|
|
\param Search A substring to be searched for.
|
||
|
|
\param Nth An index of the match to be replaced. The index is 0-based.
|
||
|
|
For negative N, matches are counted from the end of string.
|
||
|
|
\param Loc A locale used for case insensitive comparison
|
||
|
|
\return An output iterator pointing just after the last inserted character or
|
||
|
|
a modified copy of the input
|
||
|
|
|
||
|
|
\note The second variant of this function provides the strong exception-safety guarantee
|
||
|
|
*/
|
||
|
|
template<
|
||
|
|
typename OutputIteratorT,
|
||
|
|
typename Range1T,
|
||
|
|
typename Range2T>
|
||
|
|
inline OutputIteratorT ierase_nth_copy(
|
||
|
|
OutputIteratorT Output,
|
||
|
|
const Range1T& Input,
|
||
|
|
const Range2T& Search,
|
||
|
|
int Nth,
|
||
|
|
const std::locale& Loc=std::locale() )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Output,
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::nth_finder(Search, Nth, is_iequal(Loc)),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase nth algorithm
|
||
|
|
/*!
|
||
|
|
\overload
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline SequenceT ierase_nth_copy(
|
||
|
|
const SequenceT& Input,
|
||
|
|
const RangeT& Search,
|
||
|
|
int Nth,
|
||
|
|
const std::locale& Loc=std::locale() )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::nth_finder(Search, Nth, is_iequal(Loc)),
|
||
|
|
empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase nth algorithm
|
||
|
|
/*!
|
||
|
|
Remove the Nth occurrence of the substring in the input.
|
||
|
|
The input sequence is modified in-place. Searching is case insensitive.
|
||
|
|
|
||
|
|
\param Input An input string
|
||
|
|
\param Search A substring to be searched for.
|
||
|
|
\param Nth An index of the match to be replaced. The index is 0-based.
|
||
|
|
For negative N, matches are counted from the end of string.
|
||
|
|
\param Loc A locale used for case insensitive comparison
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline void ierase_nth(
|
||
|
|
SequenceT& Input,
|
||
|
|
const RangeT& Search,
|
||
|
|
int Nth,
|
||
|
|
const std::locale& Loc=std::locale() )
|
||
|
|
{
|
||
|
|
::boost::algorithm::find_format(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::nth_finder(Search, Nth, is_iequal(Loc)),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// erase_all --------------------------------------------------------//
|
||
|
|
|
||
|
|
//! Erase all algorithm
|
||
|
|
/*!
|
||
|
|
Remove all the occurrences of the string from the input.
|
||
|
|
The result is a modified copy of the input. It is returned as a sequence
|
||
|
|
or copied to the output iterator.
|
||
|
|
|
||
|
|
|
||
|
|
\param Output An output iterator to which the result will be copied
|
||
|
|
\param Input An input sequence
|
||
|
|
\param Search A substring to be searched for.
|
||
|
|
\return An output iterator pointing just after the last inserted character or
|
||
|
|
a modified copy of the input
|
||
|
|
|
||
|
|
\note The second variant of this function provides the strong exception-safety guarantee
|
||
|
|
*/
|
||
|
|
template<
|
||
|
|
typename OutputIteratorT,
|
||
|
|
typename Range1T,
|
||
|
|
typename Range2T>
|
||
|
|
inline OutputIteratorT erase_all_copy(
|
||
|
|
OutputIteratorT Output,
|
||
|
|
const Range1T& Input,
|
||
|
|
const Range2T& Search )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_all_copy(
|
||
|
|
Output,
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::first_finder(Search),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase all algorithm
|
||
|
|
/*!
|
||
|
|
\overload
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline SequenceT erase_all_copy(
|
||
|
|
const SequenceT& Input,
|
||
|
|
const RangeT& Search )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_all_copy(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::first_finder(Search),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase all algorithm
|
||
|
|
/*!
|
||
|
|
Remove all the occurrences of the string from the input.
|
||
|
|
The input sequence is modified in-place.
|
||
|
|
|
||
|
|
\param Input An input string
|
||
|
|
\param Search A substring to be searched for.
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline void erase_all(
|
||
|
|
SequenceT& Input,
|
||
|
|
const RangeT& Search )
|
||
|
|
{
|
||
|
|
::boost::algorithm::find_format_all(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::first_finder(Search),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// erase_all ( case insensitive ) ------------------------------------//
|
||
|
|
|
||
|
|
//! Erase all algorithm ( case insensitive )
|
||
|
|
/*!
|
||
|
|
Remove all the occurrences of the string from the input.
|
||
|
|
The result is a modified copy of the input. It is returned as a sequence
|
||
|
|
or copied to the output iterator.
|
||
|
|
Searching is case insensitive.
|
||
|
|
|
||
|
|
\param Output An output iterator to which the result will be copied
|
||
|
|
\param Input An input string
|
||
|
|
\param Search A substring to be searched for
|
||
|
|
\param Loc A locale used for case insensitive comparison
|
||
|
|
\return An output iterator pointing just after the last inserted character or
|
||
|
|
a modified copy of the input
|
||
|
|
|
||
|
|
\note The second variant of this function provides the strong exception-safety guarantee
|
||
|
|
*/
|
||
|
|
template<
|
||
|
|
typename OutputIteratorT,
|
||
|
|
typename Range1T,
|
||
|
|
typename Range2T>
|
||
|
|
inline OutputIteratorT ierase_all_copy(
|
||
|
|
OutputIteratorT Output,
|
||
|
|
const Range1T& Input,
|
||
|
|
const Range2T& Search,
|
||
|
|
const std::locale& Loc=std::locale() )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_all_copy(
|
||
|
|
Output,
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::first_finder(Search, is_iequal(Loc)),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase all algorithm ( case insensitive )
|
||
|
|
/*!
|
||
|
|
\overload
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline SequenceT ierase_all_copy(
|
||
|
|
const SequenceT& Input,
|
||
|
|
const RangeT& Search,
|
||
|
|
const std::locale& Loc=std::locale() )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_all_copy(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::first_finder(Search, is_iequal(Loc)),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase all algorithm ( case insensitive )
|
||
|
|
/*!
|
||
|
|
Remove all the occurrences of the string from the input.
|
||
|
|
The input sequence is modified in-place. Searching is case insensitive.
|
||
|
|
|
||
|
|
\param Input An input string
|
||
|
|
\param Search A substring to be searched for.
|
||
|
|
\param Loc A locale used for case insensitive comparison
|
||
|
|
*/
|
||
|
|
template<typename SequenceT, typename RangeT>
|
||
|
|
inline void ierase_all(
|
||
|
|
SequenceT& Input,
|
||
|
|
const RangeT& Search,
|
||
|
|
const std::locale& Loc=std::locale() )
|
||
|
|
{
|
||
|
|
::boost::algorithm::find_format_all(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::first_finder(Search, is_iequal(Loc)),
|
||
|
|
::boost::algorithm::empty_formatter(Input) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// erase_head --------------------------------------------------------------------//
|
||
|
|
|
||
|
|
//! Erase head algorithm
|
||
|
|
/*!
|
||
|
|
Remove the head from the input. The head is a prefix of a sequence of given size.
|
||
|
|
If the sequence is shorter then required, the whole string is
|
||
|
|
considered to be the head. The result is a modified copy of the input.
|
||
|
|
It is returned as a sequence or copied to the output iterator.
|
||
|
|
|
||
|
|
|
||
|
|
\param Output An output iterator to which the result will be copied
|
||
|
|
\param Input An input string
|
||
|
|
\param N Length of the head.
|
||
|
|
For N>=0, at most N characters are extracted.
|
||
|
|
For N<0, size(Input)-|N| characters are extracted.
|
||
|
|
\return An output iterator pointing just after the last inserted character or
|
||
|
|
a modified copy of the input
|
||
|
|
|
||
|
|
\note The second variant of this function provides the strong exception-safety guarantee
|
||
|
|
*/
|
||
|
|
template<
|
||
|
|
typename OutputIteratorT,
|
||
|
|
typename RangeT>
|
||
|
|
inline OutputIteratorT erase_head_copy(
|
||
|
|
OutputIteratorT Output,
|
||
|
|
const RangeT& Input,
|
||
|
|
int N )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Output,
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::head_finder(N),
|
||
|
|
::boost::algorithm::empty_formatter( Input ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase head algorithm
|
||
|
|
/*!
|
||
|
|
\overload
|
||
|
|
*/
|
||
|
|
template<typename SequenceT>
|
||
|
|
inline SequenceT erase_head_copy(
|
||
|
|
const SequenceT& Input,
|
||
|
|
int N )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::head_finder(N),
|
||
|
|
::boost::algorithm::empty_formatter( Input ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase head algorithm
|
||
|
|
/*!
|
||
|
|
Remove the head from the input. The head is a prefix of a sequence of given size.
|
||
|
|
If the sequence is shorter then required, the whole string is
|
||
|
|
considered to be the head. The input sequence is modified in-place.
|
||
|
|
|
||
|
|
\param Input An input string
|
||
|
|
\param N Length of the head
|
||
|
|
For N>=0, at most N characters are extracted.
|
||
|
|
For N<0, size(Input)-|N| characters are extracted.
|
||
|
|
*/
|
||
|
|
template<typename SequenceT>
|
||
|
|
inline void erase_head(
|
||
|
|
SequenceT& Input,
|
||
|
|
int N )
|
||
|
|
{
|
||
|
|
::boost::algorithm::find_format(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::head_finder(N),
|
||
|
|
::boost::algorithm::empty_formatter( Input ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// erase_tail --------------------------------------------------------------------//
|
||
|
|
|
||
|
|
//! Erase tail algorithm
|
||
|
|
/*!
|
||
|
|
Remove the tail from the input. The tail is a suffix of a sequence of given size.
|
||
|
|
If the sequence is shorter then required, the whole string is
|
||
|
|
considered to be the tail.
|
||
|
|
The result is a modified copy of the input. It is returned as a sequence
|
||
|
|
or copied to the output iterator.
|
||
|
|
|
||
|
|
\param Output An output iterator to which the result will be copied
|
||
|
|
\param Input An input string
|
||
|
|
\param N Length of the tail.
|
||
|
|
For N>=0, at most N characters are extracted.
|
||
|
|
For N<0, size(Input)-|N| characters are extracted.
|
||
|
|
\return An output iterator pointing just after the last inserted character or
|
||
|
|
a modified copy of the input
|
||
|
|
|
||
|
|
\note The second variant of this function provides the strong exception-safety guarantee
|
||
|
|
*/
|
||
|
|
template<
|
||
|
|
typename OutputIteratorT,
|
||
|
|
typename RangeT>
|
||
|
|
inline OutputIteratorT erase_tail_copy(
|
||
|
|
OutputIteratorT Output,
|
||
|
|
const RangeT& Input,
|
||
|
|
int N )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Output,
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::tail_finder(N),
|
||
|
|
::boost::algorithm::empty_formatter( Input ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase tail algorithm
|
||
|
|
/*!
|
||
|
|
\overload
|
||
|
|
*/
|
||
|
|
template<typename SequenceT>
|
||
|
|
inline SequenceT erase_tail_copy(
|
||
|
|
const SequenceT& Input,
|
||
|
|
int N )
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::find_format_copy(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::tail_finder(N),
|
||
|
|
::boost::algorithm::empty_formatter( Input ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
//! Erase tail algorithm
|
||
|
|
/*!
|
||
|
|
Remove the tail from the input. The tail is a suffix of a sequence of given size.
|
||
|
|
If the sequence is shorter then required, the whole string is
|
||
|
|
considered to be the tail. The input sequence is modified in-place.
|
||
|
|
|
||
|
|
\param Input An input string
|
||
|
|
\param N Length of the tail
|
||
|
|
For N>=0, at most N characters are extracted.
|
||
|
|
For N<0, size(Input)-|N| characters are extracted.
|
||
|
|
*/
|
||
|
|
template<typename SequenceT>
|
||
|
|
inline void erase_tail(
|
||
|
|
SequenceT& Input,
|
||
|
|
int N )
|
||
|
|
{
|
||
|
|
::boost::algorithm::find_format(
|
||
|
|
Input,
|
||
|
|
::boost::algorithm::tail_finder(N),
|
||
|
|
::boost::algorithm::empty_formatter( Input ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace algorithm
|
||
|
|
|
||
|
|
// pull names into the boost namespace
|
||
|
|
using algorithm::erase_range_copy;
|
||
|
|
using algorithm::erase_range;
|
||
|
|
using algorithm::erase_first_copy;
|
||
|
|
using algorithm::erase_first;
|
||
|
|
using algorithm::ierase_first_copy;
|
||
|
|
using algorithm::ierase_first;
|
||
|
|
using algorithm::erase_last_copy;
|
||
|
|
using algorithm::erase_last;
|
||
|
|
using algorithm::ierase_last_copy;
|
||
|
|
using algorithm::ierase_last;
|
||
|
|
using algorithm::erase_nth_copy;
|
||
|
|
using algorithm::erase_nth;
|
||
|
|
using algorithm::ierase_nth_copy;
|
||
|
|
using algorithm::ierase_nth;
|
||
|
|
using algorithm::erase_all_copy;
|
||
|
|
using algorithm::erase_all;
|
||
|
|
using algorithm::ierase_all_copy;
|
||
|
|
using algorithm::ierase_all;
|
||
|
|
using algorithm::erase_head_copy;
|
||
|
|
using algorithm::erase_head;
|
||
|
|
using algorithm::erase_tail_copy;
|
||
|
|
using algorithm::erase_tail;
|
||
|
|
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
|
||
|
|
#endif // BOOST_ERASE_HPP
|