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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_ALL_HPP
#define BOOST_STRING_TRIM_ALL_HPP
#include <boost/algorithm/string/config.hpp>
#include <boost/algorithm/string/trim.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/find_format.hpp>
#include <boost/algorithm/string/formatter.hpp>
#include <boost/algorithm/string/finder.hpp>
#include <locale>
/*! \file
Defines trim_all algorithms.
Just like \c trim, \c trim_all removes all trailing and leading spaces from a
sequence (string). In addition, spaces in the middle of the sequence are truncated
to just one character. Space is recognized using given locales.
\c trim_fill acts as trim_all, but the spaces in the middle are replaces with
a user-define sequence of character.
Parametric (\c _if) variants use a predicate (functor) to select which characters
are to be trimmed..
Functions take a selection predicate as a parameter, which is used to determine
whether a character is a space. Common predicates are provided in classification.hpp header.
*/
namespace boost {
namespace algorithm {
// multi line trim ----------------------------------------------- //
//! Trim All - parametric
/*!
Remove all leading and trailing spaces from the input and
compress all other spaces to a single character.
The result is a trimmed copy of the input
\param Input An input sequence
\param IsSpace A unary predicate identifying spaces
\return A trimmed copy of the input
*/
template<typename SequenceT, typename PredicateT>
inline SequenceT trim_all_copy_if(const SequenceT& Input, PredicateT IsSpace)
{
return
::boost::find_format_all_copy(
::boost::trim_copy_if(Input, IsSpace),
::boost::token_finder(IsSpace, ::boost::token_compress_on),
::boost::dissect_formatter(::boost::head_finder(1)));
}
//! Trim All
/*!
Remove all leading and trailing spaces from the input and
compress all other spaces to a single character.
The input sequence is modified in-place.
\param Input An input sequence
\param IsSpace A unary predicate identifying spaces
*/
template<typename SequenceT, typename PredicateT>
inline void trim_all_if(SequenceT& Input, PredicateT IsSpace)
{
::boost::trim_if(Input, IsSpace);
::boost::find_format_all(
Input,
::boost::token_finder(IsSpace, ::boost::token_compress_on),
::boost::dissect_formatter(::boost::head_finder(1)));
}
//! Trim All
/*!
Remove all leading and trailing spaces from the input and
compress all other spaces to a single character.
The result is a trimmed copy of the input
\param Input An input sequence
\param Loc A locale used for 'space' classification
\return A trimmed copy of the input
*/
template<typename SequenceT>
inline SequenceT trim_all_copy(const SequenceT& Input, const std::locale& Loc =std::locale())
{
return trim_all_copy_if(Input, ::boost::is_space(Loc));
}
//! Trim All
/*!
Remove all leading and trailing spaces from the input and
compress all other spaces to a single character.
The input sequence is modified in-place.
\param Input An input sequence
\param Loc A locale used for 'space' classification
\return A trimmed copy of the input
*/
template<typename SequenceT>
inline void trim_all(SequenceT& Input, const std::locale& Loc =std::locale())
{
trim_all_if(Input, ::boost::is_space(Loc));
}
//! Trim Fill - parametric
/*!
Remove all leading and trailing spaces from the input and
replace all every block of consecutive spaces with a fill string
defined by user.
The result is a trimmed copy of the input
\param Input An input sequence
\param Fill A string used to fill the inner spaces
\param IsSpace A unary predicate identifying spaces
\return A trimmed copy of the input
*/
template<typename SequenceT, typename RangeT, typename PredicateT>
inline SequenceT trim_fill_copy_if(const SequenceT& Input, const RangeT& Fill, PredicateT IsSpace)
{
return
::boost::find_format_all_copy(
::boost::trim_copy_if(Input, IsSpace),
::boost::token_finder(IsSpace, ::boost::token_compress_on),
::boost::const_formatter(::boost::as_literal(Fill)));
}
//! Trim Fill
/*!
Remove all leading and trailing spaces from the input and
replace all every block of consecutive spaces with a fill string
defined by user.
The input sequence is modified in-place.
\param Input An input sequence
\param Fill A string used to fill the inner spaces
\param IsSpace A unary predicate identifying spaces
*/
template<typename SequenceT, typename RangeT, typename PredicateT>
inline void trim_fill_if(SequenceT& Input, const RangeT& Fill, PredicateT IsSpace)
{
::boost::trim_if(Input, IsSpace);
::boost::find_format_all(
Input,
::boost::token_finder(IsSpace, ::boost::token_compress_on),
::boost::const_formatter(::boost::as_literal(Fill)));
}
//! Trim Fill
/*!
Remove all leading and trailing spaces from the input and
replace all every block of consecutive spaces with a fill string
defined by user.
The result is a trimmed copy of the input
\param Input An input sequence
\param Fill A string used to fill the inner spaces
\param Loc A locale used for 'space' classification
\return A trimmed copy of the input
*/
template<typename SequenceT, typename RangeT>
inline SequenceT trim_fill_copy(const SequenceT& Input, const RangeT& Fill, const std::locale& Loc =std::locale())
{
return trim_fill_copy_if(Input, Fill, ::boost::is_space(Loc));
}
//! Trim Fill
/*!
Remove all leading and trailing spaces from the input and
replace all every block of consecutive spaces with a fill string
defined by user.
The input sequence is modified in-place.
\param Input An input sequence
\param Fill A string used to fill the inner spaces
\param Loc A locale used for 'space' classification
\return A trimmed copy of the input
*/
template<typename SequenceT, typename RangeT>
inline void trim_fill(SequenceT& Input, const RangeT& Fill, const std::locale& Loc =std::locale())
{
trim_fill_if(Input, Fill, ::boost::is_space(Loc));
}
} // namespace algorithm
// pull names to the boost namespace
using algorithm::trim_all;
using algorithm::trim_all_if;
using algorithm::trim_all_copy;
using algorithm::trim_all_copy_if;
using algorithm::trim_fill;
using algorithm::trim_fill_if;
using algorithm::trim_fill_copy;
using algorithm::trim_fill_copy_if;
} // namespace boost
#endif // BOOST_STRING_TRIM_ALL_HPP
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