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163 lines
6.4 KiB
163 lines
6.4 KiB
// 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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