mirror of https://gitee.com/bigwinds/arangodb
106 lines
4.0 KiB
C++
106 lines
4.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief full text search, wordlists
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2012-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "fulltext-wordlist.h"
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors / destructors
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create a wordlist
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///
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/// the words passed to the wordlist will be owned by the wordlist and will be
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/// freed when the wordlist is freed
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////////////////////////////////////////////////////////////////////////////////
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TRI_fulltext_wordlist_t* TRI_CreateWordlistFulltextIndex (char** words,
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size_t numWords) {
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TRI_fulltext_wordlist_t* wordlist = static_cast<TRI_fulltext_wordlist_t*>(TRI_Allocate(TRI_UNKNOWN_MEM_ZONE, sizeof(TRI_fulltext_wordlist_t), false));
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if (wordlist == nullptr) {
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return nullptr;
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}
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wordlist->_words = words;
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wordlist->_numWords = (uint32_t) numWords;
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return wordlist;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroy a wordlist
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////////////////////////////////////////////////////////////////////////////////
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void TRI_DestroyWordlistFulltextIndex (TRI_fulltext_wordlist_t* wordlist) {
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for (uint32_t i = 0; i < wordlist->_numWords; ++i) {
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TRI_Free(TRI_UNKNOWN_MEM_ZONE, wordlist->_words[i]);
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}
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TRI_Free(TRI_UNKNOWN_MEM_ZONE, wordlist->_words);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief free a wordlist
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////////////////////////////////////////////////////////////////////////////////
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void TRI_FreeWordlistFulltextIndex (TRI_fulltext_wordlist_t* wordlist) {
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TRI_DestroyWordlistFulltextIndex(wordlist);
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TRI_Free(TRI_UNKNOWN_MEM_ZONE, wordlist);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief sort a wordlist in place
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////////////////////////////////////////////////////////////////////////////////
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void TRI_SortWordlistFulltextIndex (TRI_fulltext_wordlist_t* wordlist) {
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if (wordlist->_numWords <= 1) {
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// do not sort in this case
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return;
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}
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auto compareSort = [] (char const* l, char const* r) {
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return (strcmp(l, r) < 0);
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};
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std::sort(wordlist->_words, wordlist->_words + wordlist->_numWords, compareSort);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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