647 lines
23 KiB
C++
647 lines
23 KiB
C++
|
// Boost string_algo library finder.hpp header file ---------------------------//
|
||
|
|
|
||
|
|
// Copyright Pavol Droba 2002-2006.
|
||
|
|
//
|
||
|
|
// 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_FINDER_DETAIL_HPP
|
||
|
|
#define BOOST_STRING_FINDER_DETAIL_HPP
|
||
|
|
|
||
|
|
#include <boost/algorithm/string/config.hpp>
|
||
|
|
#include <boost/algorithm/string/constants.hpp>
|
||
|
|
#include <boost/detail/iterator.hpp>
|
||
|
|
|
||
|
|
#include <boost/range/iterator_range.hpp>
|
||
|
|
#include <boost/range/begin.hpp>
|
||
|
|
#include <boost/range/end.hpp>
|
||
|
|
#include <boost/range/empty.hpp>
|
||
|
|
#include <boost/range/as_literal.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace algorithm {
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
|
||
|
|
// find first functor -----------------------------------------------//
|
||
|
|
|
||
|
|
// find a subsequence in the sequence ( functor )
|
||
|
|
/*
|
||
|
|
Returns a pair <begin,end> marking the subsequence in the sequence.
|
||
|
|
If the find fails, functor returns <End,End>
|
||
|
|
*/
|
||
|
|
template<typename SearchIteratorT,typename PredicateT>
|
||
|
|
struct first_finderF
|
||
|
|
{
|
||
|
|
typedef SearchIteratorT search_iterator_type;
|
||
|
|
|
||
|
|
// Construction
|
||
|
|
template< typename SearchT >
|
||
|
|
first_finderF( const SearchT& Search, PredicateT Comp ) :
|
||
|
|
m_Search(::boost::begin(Search), ::boost::end(Search)), m_Comp(Comp) {}
|
||
|
|
first_finderF(
|
||
|
|
search_iterator_type SearchBegin,
|
||
|
|
search_iterator_type SearchEnd,
|
||
|
|
PredicateT Comp ) :
|
||
|
|
m_Search(SearchBegin, SearchEnd), m_Comp(Comp) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
operator()(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End ) const
|
||
|
|
{
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
|
||
|
|
// Outer loop
|
||
|
|
for(input_iterator_type OuterIt=Begin;
|
||
|
|
OuterIt!=End;
|
||
|
|
++OuterIt)
|
||
|
|
{
|
||
|
|
// Sanity check
|
||
|
|
if( boost::empty(m_Search) )
|
||
|
|
return result_type( End, End );
|
||
|
|
|
||
|
|
input_iterator_type InnerIt=OuterIt;
|
||
|
|
search_iterator_type SubstrIt=m_Search.begin();
|
||
|
|
for(;
|
||
|
|
InnerIt!=End && SubstrIt!=m_Search.end();
|
||
|
|
++InnerIt,++SubstrIt)
|
||
|
|
{
|
||
|
|
if( !( m_Comp(*InnerIt,*SubstrIt) ) )
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Substring matching succeeded
|
||
|
|
if ( SubstrIt==m_Search.end() )
|
||
|
|
return result_type( OuterIt, InnerIt );
|
||
|
|
}
|
||
|
|
|
||
|
|
return result_type( End, End );
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
iterator_range<search_iterator_type> m_Search;
|
||
|
|
PredicateT m_Comp;
|
||
|
|
};
|
||
|
|
|
||
|
|
// find last functor -----------------------------------------------//
|
||
|
|
|
||
|
|
// find the last match a subseqeunce in the sequence ( functor )
|
||
|
|
/*
|
||
|
|
Returns a pair <begin,end> marking the subsequence in the sequence.
|
||
|
|
If the find fails, returns <End,End>
|
||
|
|
*/
|
||
|
|
template<typename SearchIteratorT, typename PredicateT>
|
||
|
|
struct last_finderF
|
||
|
|
{
|
||
|
|
typedef SearchIteratorT search_iterator_type;
|
||
|
|
typedef first_finderF<
|
||
|
|
search_iterator_type,
|
||
|
|
PredicateT> first_finder_type;
|
||
|
|
|
||
|
|
// Construction
|
||
|
|
template< typename SearchT >
|
||
|
|
last_finderF( const SearchT& Search, PredicateT Comp ) :
|
||
|
|
m_Search(::boost::begin(Search), ::boost::end(Search)), m_Comp(Comp) {}
|
||
|
|
last_finderF(
|
||
|
|
search_iterator_type SearchBegin,
|
||
|
|
search_iterator_type SearchEnd,
|
||
|
|
PredicateT Comp ) :
|
||
|
|
m_Search(SearchBegin, SearchEnd), m_Comp(Comp) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
operator()(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End ) const
|
||
|
|
{
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
if( boost::empty(m_Search) )
|
||
|
|
return result_type( End, End );
|
||
|
|
|
||
|
|
typedef BOOST_STRING_TYPENAME boost::detail::
|
||
|
|
iterator_traits<ForwardIteratorT>::iterator_category category;
|
||
|
|
|
||
|
|
return findit( Begin, End, category() );
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
// forward iterator
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
findit(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
std::forward_iterator_tag ) const
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
first_finder_type first_finder(
|
||
|
|
m_Search.begin(), m_Search.end(), m_Comp );
|
||
|
|
|
||
|
|
result_type M=first_finder( Begin, End );
|
||
|
|
result_type Last=M;
|
||
|
|
|
||
|
|
while( M )
|
||
|
|
{
|
||
|
|
Last=M;
|
||
|
|
M=first_finder( ::boost::end(M), End );
|
||
|
|
}
|
||
|
|
|
||
|
|
return Last;
|
||
|
|
}
|
||
|
|
|
||
|
|
// bidirectional iterator
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
findit(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
std::bidirectional_iterator_tag ) const
|
||
|
|
{
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
|
||
|
|
// Outer loop
|
||
|
|
for(input_iterator_type OuterIt=End;
|
||
|
|
OuterIt!=Begin; )
|
||
|
|
{
|
||
|
|
input_iterator_type OuterIt2=--OuterIt;
|
||
|
|
|
||
|
|
input_iterator_type InnerIt=OuterIt2;
|
||
|
|
search_iterator_type SubstrIt=m_Search.begin();
|
||
|
|
for(;
|
||
|
|
InnerIt!=End && SubstrIt!=m_Search.end();
|
||
|
|
++InnerIt,++SubstrIt)
|
||
|
|
{
|
||
|
|
if( !( m_Comp(*InnerIt,*SubstrIt) ) )
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Substring matching succeeded
|
||
|
|
if( SubstrIt==m_Search.end() )
|
||
|
|
return result_type( OuterIt2, InnerIt );
|
||
|
|
}
|
||
|
|
|
||
|
|
return result_type( End, End );
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
iterator_range<search_iterator_type> m_Search;
|
||
|
|
PredicateT m_Comp;
|
||
|
|
};
|
||
|
|
|
||
|
|
// find n-th functor -----------------------------------------------//
|
||
|
|
|
||
|
|
// find the n-th match of a subsequence in the sequence ( functor )
|
||
|
|
/*
|
||
|
|
Returns a pair <begin,end> marking the subsequence in the sequence.
|
||
|
|
If the find fails, returns <End,End>
|
||
|
|
*/
|
||
|
|
template<typename SearchIteratorT, typename PredicateT>
|
||
|
|
struct nth_finderF
|
||
|
|
{
|
||
|
|
typedef SearchIteratorT search_iterator_type;
|
||
|
|
typedef first_finderF<
|
||
|
|
search_iterator_type,
|
||
|
|
PredicateT> first_finder_type;
|
||
|
|
typedef last_finderF<
|
||
|
|
search_iterator_type,
|
||
|
|
PredicateT> last_finder_type;
|
||
|
|
|
||
|
|
// Construction
|
||
|
|
template< typename SearchT >
|
||
|
|
nth_finderF(
|
||
|
|
const SearchT& Search,
|
||
|
|
int Nth,
|
||
|
|
PredicateT Comp) :
|
||
|
|
m_Search(::boost::begin(Search), ::boost::end(Search)),
|
||
|
|
m_Nth(Nth),
|
||
|
|
m_Comp(Comp) {}
|
||
|
|
nth_finderF(
|
||
|
|
search_iterator_type SearchBegin,
|
||
|
|
search_iterator_type SearchEnd,
|
||
|
|
int Nth,
|
||
|
|
PredicateT Comp) :
|
||
|
|
m_Search(SearchBegin, SearchEnd),
|
||
|
|
m_Nth(Nth),
|
||
|
|
m_Comp(Comp) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
operator()(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End ) const
|
||
|
|
{
|
||
|
|
if(m_Nth>=0)
|
||
|
|
{
|
||
|
|
return find_forward(Begin, End, m_Nth);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return find_backward(Begin, End, -m_Nth);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
// Implementation helpers
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_forward(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N) const
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
// Sanity check
|
||
|
|
if( boost::empty(m_Search) )
|
||
|
|
return result_type( End, End );
|
||
|
|
|
||
|
|
// Instantiate find functor
|
||
|
|
first_finder_type first_finder(
|
||
|
|
m_Search.begin(), m_Search.end(), m_Comp );
|
||
|
|
|
||
|
|
result_type M( Begin, Begin );
|
||
|
|
|
||
|
|
for( unsigned int n=0; n<=N; ++n )
|
||
|
|
{
|
||
|
|
// find next match
|
||
|
|
M=first_finder( ::boost::end(M), End );
|
||
|
|
|
||
|
|
if ( !M )
|
||
|
|
{
|
||
|
|
// Subsequence not found, return
|
||
|
|
return M;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return M;
|
||
|
|
}
|
||
|
|
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_backward(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N) const
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
// Sanity check
|
||
|
|
if( boost::empty(m_Search) )
|
||
|
|
return result_type( End, End );
|
||
|
|
|
||
|
|
// Instantiate find functor
|
||
|
|
last_finder_type last_finder(
|
||
|
|
m_Search.begin(), m_Search.end(), m_Comp );
|
||
|
|
|
||
|
|
result_type M( End, End );
|
||
|
|
|
||
|
|
for( unsigned int n=1; n<=N; ++n )
|
||
|
|
{
|
||
|
|
// find next match
|
||
|
|
M=last_finder( Begin, ::boost::begin(M) );
|
||
|
|
|
||
|
|
if ( !M )
|
||
|
|
{
|
||
|
|
// Subsequence not found, return
|
||
|
|
return M;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return M;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
private:
|
||
|
|
iterator_range<search_iterator_type> m_Search;
|
||
|
|
int m_Nth;
|
||
|
|
PredicateT m_Comp;
|
||
|
|
};
|
||
|
|
|
||
|
|
// find head/tail implementation helpers ---------------------------//
|
||
|
|
|
||
|
|
template<typename ForwardIteratorT>
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_head_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N,
|
||
|
|
std::forward_iterator_tag )
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
input_iterator_type It=Begin;
|
||
|
|
for(
|
||
|
|
unsigned int Index=0;
|
||
|
|
Index<N && It!=End; ++Index,++It ) {};
|
||
|
|
|
||
|
|
return result_type( Begin, It );
|
||
|
|
}
|
||
|
|
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_head_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N,
|
||
|
|
std::random_access_iterator_tag )
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
if ( (End<=Begin) || ( static_cast<unsigned int>(End-Begin) < N ) )
|
||
|
|
return result_type( Begin, End );
|
||
|
|
|
||
|
|
return result_type(Begin,Begin+N);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Find head implementation
|
||
|
|
template<typename ForwardIteratorT>
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_head_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N )
|
||
|
|
{
|
||
|
|
typedef BOOST_STRING_TYPENAME boost::detail::
|
||
|
|
iterator_traits<ForwardIteratorT>::iterator_category category;
|
||
|
|
|
||
|
|
return ::boost::algorithm::detail::find_head_impl( Begin, End, N, category() );
|
||
|
|
}
|
||
|
|
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_tail_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N,
|
||
|
|
std::forward_iterator_tag )
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
unsigned int Index=0;
|
||
|
|
input_iterator_type It=Begin;
|
||
|
|
input_iterator_type It2=Begin;
|
||
|
|
|
||
|
|
// Advance It2 by N increments
|
||
|
|
for( Index=0; Index<N && It2!=End; ++Index,++It2 ) {};
|
||
|
|
|
||
|
|
// Advance It, It2 to the end
|
||
|
|
for(; It2!=End; ++It,++It2 ) {};
|
||
|
|
|
||
|
|
return result_type( It, It2 );
|
||
|
|
}
|
||
|
|
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_tail_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N,
|
||
|
|
std::bidirectional_iterator_tag )
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
input_iterator_type It=End;
|
||
|
|
for(
|
||
|
|
unsigned int Index=0;
|
||
|
|
Index<N && It!=Begin; ++Index,--It ) {};
|
||
|
|
|
||
|
|
return result_type( It, End );
|
||
|
|
}
|
||
|
|
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_tail_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N,
|
||
|
|
std::random_access_iterator_tag )
|
||
|
|
{
|
||
|
|
typedef ForwardIteratorT input_iterator_type;
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
if ( (End<=Begin) || ( static_cast<unsigned int>(End-Begin) < N ) )
|
||
|
|
return result_type( Begin, End );
|
||
|
|
|
||
|
|
return result_type( End-N, End );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
find_tail_impl(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End,
|
||
|
|
unsigned int N )
|
||
|
|
{
|
||
|
|
typedef BOOST_STRING_TYPENAME boost::detail::
|
||
|
|
iterator_traits<ForwardIteratorT>::iterator_category category;
|
||
|
|
|
||
|
|
return ::boost::algorithm::detail::find_tail_impl( Begin, End, N, category() );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// find head functor -----------------------------------------------//
|
||
|
|
|
||
|
|
|
||
|
|
// find a head in the sequence ( functor )
|
||
|
|
/*
|
||
|
|
This functor find a head of the specified range. For
|
||
|
|
a specified N, the head is a subsequence of N starting
|
||
|
|
elements of the range.
|
||
|
|
*/
|
||
|
|
struct head_finderF
|
||
|
|
{
|
||
|
|
// Construction
|
||
|
|
head_finderF( int N ) : m_N(N) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
operator()(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End ) const
|
||
|
|
{
|
||
|
|
if(m_N>=0)
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::detail::find_head_impl( Begin, End, m_N );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
iterator_range<ForwardIteratorT> Res=
|
||
|
|
::boost::algorithm::detail::find_tail_impl( Begin, End, -m_N );
|
||
|
|
|
||
|
|
return ::boost::make_iterator_range(Begin, Res.begin());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
int m_N;
|
||
|
|
};
|
||
|
|
|
||
|
|
// find tail functor -----------------------------------------------//
|
||
|
|
|
||
|
|
|
||
|
|
// find a tail in the sequence ( functor )
|
||
|
|
/*
|
||
|
|
This functor find a tail of the specified range. For
|
||
|
|
a specified N, the head is a subsequence of N starting
|
||
|
|
elements of the range.
|
||
|
|
*/
|
||
|
|
struct tail_finderF
|
||
|
|
{
|
||
|
|
// Construction
|
||
|
|
tail_finderF( int N ) : m_N(N) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
operator()(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End ) const
|
||
|
|
{
|
||
|
|
if(m_N>=0)
|
||
|
|
{
|
||
|
|
return ::boost::algorithm::detail::find_tail_impl( Begin, End, m_N );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
iterator_range<ForwardIteratorT> Res=
|
||
|
|
::boost::algorithm::detail::find_head_impl( Begin, End, -m_N );
|
||
|
|
|
||
|
|
return ::boost::make_iterator_range(Res.end(), End);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
int m_N;
|
||
|
|
};
|
||
|
|
|
||
|
|
// find token functor -----------------------------------------------//
|
||
|
|
|
||
|
|
// find a token in a sequence ( functor )
|
||
|
|
/*
|
||
|
|
This find functor finds a token specified be a predicate
|
||
|
|
in a sequence. It is equivalent of std::find algorithm,
|
||
|
|
with an exception that it return range instead of a single
|
||
|
|
iterator.
|
||
|
|
|
||
|
|
If bCompress is set to true, adjacent matching tokens are
|
||
|
|
concatenated into one match.
|
||
|
|
*/
|
||
|
|
template< typename PredicateT >
|
||
|
|
struct token_finderF
|
||
|
|
{
|
||
|
|
// Construction
|
||
|
|
token_finderF(
|
||
|
|
PredicateT Pred,
|
||
|
|
token_compress_mode_type eCompress=token_compress_off ) :
|
||
|
|
m_Pred(Pred), m_eCompress(eCompress) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIteratorT >
|
||
|
|
iterator_range<ForwardIteratorT>
|
||
|
|
operator()(
|
||
|
|
ForwardIteratorT Begin,
|
||
|
|
ForwardIteratorT End ) const
|
||
|
|
{
|
||
|
|
typedef iterator_range<ForwardIteratorT> result_type;
|
||
|
|
|
||
|
|
ForwardIteratorT It=std::find_if( Begin, End, m_Pred );
|
||
|
|
|
||
|
|
if( It==End )
|
||
|
|
{
|
||
|
|
return result_type( End, End );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ForwardIteratorT It2=It;
|
||
|
|
|
||
|
|
if( m_eCompress==token_compress_on )
|
||
|
|
{
|
||
|
|
// Find first non-matching character
|
||
|
|
while( It2!=End && m_Pred(*It2) ) ++It2;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Advance by one position
|
||
|
|
++It2;
|
||
|
|
}
|
||
|
|
|
||
|
|
return result_type( It, It2 );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
PredicateT m_Pred;
|
||
|
|
token_compress_mode_type m_eCompress;
|
||
|
|
};
|
||
|
|
|
||
|
|
// find range functor -----------------------------------------------//
|
||
|
|
|
||
|
|
// find a range in the sequence ( functor )
|
||
|
|
/*
|
||
|
|
This functor actually does not perform any find operation.
|
||
|
|
It always returns given iterator range as a result.
|
||
|
|
*/
|
||
|
|
template<typename ForwardIterator1T>
|
||
|
|
struct range_finderF
|
||
|
|
{
|
||
|
|
typedef ForwardIterator1T input_iterator_type;
|
||
|
|
typedef iterator_range<input_iterator_type> result_type;
|
||
|
|
|
||
|
|
// Construction
|
||
|
|
range_finderF(
|
||
|
|
input_iterator_type Begin,
|
||
|
|
input_iterator_type End ) : m_Range(Begin, End) {}
|
||
|
|
|
||
|
|
range_finderF(const iterator_range<input_iterator_type>& Range) :
|
||
|
|
m_Range(Range) {}
|
||
|
|
|
||
|
|
// Operation
|
||
|
|
template< typename ForwardIterator2T >
|
||
|
|
iterator_range<ForwardIterator2T>
|
||
|
|
operator()(
|
||
|
|
ForwardIterator2T,
|
||
|
|
ForwardIterator2T ) const
|
||
|
|
{
|
||
|
|
#if BOOST_WORKAROUND( __MWERKS__, <= 0x3003 )
|
||
|
|
return iterator_range<const ForwardIterator2T>(this->m_Range);
|
||
|
|
#elif BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
|
||
|
|
return iterator_range<ForwardIterator2T>(m_Range.begin(), m_Range.end());
|
||
|
|
#else
|
||
|
|
return m_Range;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
iterator_range<input_iterator_type> m_Range;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
} // namespace algorithm
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#endif // BOOST_STRING_FINDER_DETAIL_HPP
|