110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
/*
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* The MIT License (MIT)
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*
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* Copyright (C) 2013 Yanyi Wu
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* Copyright (C) 2023, KylinSoft Co., Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#pragma once
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#include "limonp/StringUtil.hpp"
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#include "segment-trie/segment-trie.h"
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//#include "DictTrie.hpp"
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//#include "SegmentTagged.hpp"
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namespace cppjieba {
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using namespace limonp;
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static const char* const POS_M = "m";
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static const char* const POS_ENG = "eng";
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static const char* const POS_X = "x";
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class PosTagger {
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public:
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PosTagger() {
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}
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~PosTagger() {
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}
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bool Tag(const string& src, vector<pair<string, string> >& res, const SegmentTagged& segment) const {
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vector<string> CutRes;
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segment.CutToStr(src, CutRes);
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for (vector<string>::iterator itr = CutRes.begin(); itr != CutRes.end(); ++itr) {
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res.push_back(make_pair(*itr, LookupTag(*itr, segment)));
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}
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return !res.empty();
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}
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string LookupTag(const string &str, const SegmentTagged& segment) const {
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const DictTrie * dict = segment.GetDictTrie();
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assert(dict != nullptr);
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const auto tmp = dict->Find(str);
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if (tmp == nullptr || tmp->GetTag().empty()) {
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RuneStrArray runes;
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if (!DecodeRunesInString(str, runes)) {
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XLOG(ERROR) << "Decode failed.";
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return POS_X;
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}
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return SpecialRule(runes);
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} else {
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return tmp->GetTag();
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}
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}
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private:
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const char* SpecialRule(const RuneStrArray& unicode) const {
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size_t m = 0;
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size_t eng = 0;
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for (size_t i = 0; i < unicode.size() && eng < unicode.size() / 2; i++) {
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if (unicode[i].rune < 0x80) {
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eng ++;
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if ('0' <= unicode[i].rune && unicode[i].rune <= '9') {
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m++;
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}
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}
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}
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// ascii char is not found
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if (eng == 0) {
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return POS_X;
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}
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// all the ascii is number char
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if (m == eng) {
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return POS_M;
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}
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// the ascii chars contain english letter
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return POS_ENG;
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}
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}; // class PosTagger
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} // namespace cppjieba
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