164 lines
6.6 KiB
C++
164 lines
6.6 KiB
C++
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// Boost string_algo library split.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_SPLIT_HPP
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#define BOOST_STRING_SPLIT_HPP
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#include <boost/algorithm/string/config.hpp>
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#include <boost/algorithm/string/iter_find.hpp>
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#include <boost/algorithm/string/finder.hpp>
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#include <boost/algorithm/string/compare.hpp>
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/*! \file
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Defines basic split algorithms.
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Split algorithms can be used to divide a string
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into several parts according to given criteria.
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Each part is copied and added as a new element to the
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output container.
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Thus the result container must be able to hold copies
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of the matches (in a compatible structure like std::string) or
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a reference to it (e.g. using the iterator range class).
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Examples of such a container are \c std::vector<std::string>
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or \c std::list<boost::iterator_range<std::string::iterator>>
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*/
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namespace boost {
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namespace algorithm {
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// find_all ------------------------------------------------------------//
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//! Find all algorithm
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/*!
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This algorithm finds all occurrences of the search string
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in the input.
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Each part is copied and added as a new element to the
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output container.
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Thus the result container must be able to hold copies
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of the matches (in a compatible structure like std::string) or
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a reference to it (e.g. using the iterator range class).
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Examples of such a container are \c std::vector<std::string>
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or \c std::list<boost::iterator_range<std::string::iterator>>
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\param Result A container that can hold copies of references to the substrings
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\param Input A container which will be searched.
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\param Search A substring to be searched for.
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\return A reference the result
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\note Prior content of the result will be overwritten.
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\note This function provides the strong exception-safety guarantee
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*/
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template< typename SequenceSequenceT, typename Range1T, typename Range2T >
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inline SequenceSequenceT& find_all(
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SequenceSequenceT& Result,
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Range1T& Input,
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const Range2T& Search)
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{
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return ::boost::algorithm::iter_find(
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Result,
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Input,
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::boost::algorithm::first_finder(Search) );
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}
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//! Find all algorithm ( case insensitive )
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/*!
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This algorithm finds all occurrences of the search string
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in the input.
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Each part is copied and added as a new element to the
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output container. Thus the result container must be able to hold copies
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of the matches (in a compatible structure like std::string) or
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a reference to it (e.g. using the iterator range class).
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Examples of such a container are \c std::vector<std::string>
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or \c std::list<boost::iterator_range<std::string::iterator>>
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Searching is case insensitive.
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\param Result A container that can hold copies of references to the substrings
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\param Input A container which will be searched.
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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 A reference the result
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\note Prior content of the result will be overwritten.
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\note This function provides the strong exception-safety guarantee
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*/
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template< typename SequenceSequenceT, typename Range1T, typename Range2T >
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inline SequenceSequenceT& ifind_all(
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SequenceSequenceT& Result,
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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::iter_find(
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Result,
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Input,
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::boost::algorithm::first_finder(Search, is_iequal(Loc) ) );
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}
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// tokenize -------------------------------------------------------------//
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//! Split algorithm
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/*!
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Tokenize expression. This function is equivalent to C strtok. Input
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sequence is split into tokens, separated by separators. Separators
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are given by means of the predicate.
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Each part is copied and added as a new element to the
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output container.
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Thus the result container must be able to hold copies
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of the matches (in a compatible structure like std::string) or
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a reference to it (e.g. using the iterator range class).
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Examples of such a container are \c std::vector<std::string>
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or \c std::list<boost::iterator_range<std::string::iterator>>
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\param Result A container that can hold copies of references to the substrings
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\param Input A container which will be searched.
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\param Pred A predicate to identify separators. This predicate is
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supposed to return true if a given element is a separator.
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\param eCompress If eCompress argument is set to token_compress_on, adjacent
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separators are merged together. Otherwise, every two separators
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delimit a token.
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\return A reference the result
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\note Prior content of the result will be overwritten.
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\note This function provides the strong exception-safety guarantee
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*/
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template< typename SequenceSequenceT, typename RangeT, typename PredicateT >
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inline SequenceSequenceT& split(
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SequenceSequenceT& Result,
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RangeT& Input,
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PredicateT Pred,
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token_compress_mode_type eCompress=token_compress_off )
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{
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return ::boost::algorithm::iter_split(
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Result,
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Input,
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::boost::algorithm::token_finder( Pred, eCompress ) );
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}
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} // namespace algorithm
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// pull names to the boost namespace
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using algorithm::find_all;
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using algorithm::ifind_all;
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using algorithm::split;
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} // namespace boost
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#endif // BOOST_STRING_SPLIT_HPP
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