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search/suggest.cpp
61 строка
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Maxim Pimenov
[search] Changed namespace from search::base to search_base.
17 сен 2018, 11:06
17 сен 2018, 11:06
5dff287
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#include "search/suggest.hpp" #include "indexer/search_delimiters.hpp" #include "indexer/search_string_utils.hpp" #include "search/common.hpp" #include "base/stl_helpers.hpp" #include <vector> using namespace std; namespace search { void GetSuggestion(RankerResult const & res, string const & query, QueryTokens const & paramTokens, strings::UniString const & prefix, string & suggest) { // Splits result's name. search::Delimiters delims; vector<strings::UniString> tokens; SplitUniString(NormalizeAndSimplifyString(res.GetName()), base::MakeBackInsertFunctor(tokens), delims); // Finds tokens that are already present in the input query. vector<bool> tokensMatched(tokens.size()); bool prefixMatched = false; bool fullPrefixMatched = false; for (size_t i = 0; i < tokens.size(); ++i) { auto const & token = tokens[i]; if (find(paramTokens.begin(), paramTokens.end(), token) != paramTokens.end()) { tokensMatched[i] = true; } else if (StartsWith(token, prefix)) { prefixMatched = true; fullPrefixMatched = token.size() == prefix.size(); } } // When |name| does not match prefix or when prefix equals to some // token of the |name| (for example, when user entered "Moscow" // without space at the end), we should not suggest anything. if (!prefixMatched || fullPrefixMatched) return; suggest = DropLastToken(query); // Appends unmatched result's tokens to the suggestion. for (size_t i = 0; i < tokens.size(); ++i) { if (tokensMatched[i]) continue; suggest.append(strings::ToUtf8(tokens[i])); suggest.push_back(' '); } } } // namespace search