/**
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* Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights Reserved.
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* MIT License (https://opensource.org/licenses/MIT)
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*/
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#include "precomp.h"
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namespace funasr {
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CTokenizer::CTokenizer(const char* sz_yamlfile):m_ready(false)
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{
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OpenYaml(sz_yamlfile);
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}
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CTokenizer::CTokenizer():m_ready(false)
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{
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}
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CTokenizer::~CTokenizer()
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{
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}
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void CTokenizer::ReadYaml(const YAML::Node& node)
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{
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if (node.IsMap())
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{//��map��
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for (auto it = node.begin(); it != node.end(); ++it)
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{
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ReadYaml(it->second);
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}
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}
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if (node.IsSequence()) {//��������
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for (size_t i = 0; i < node.size(); ++i) {
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ReadYaml(node[i]);
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}
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}
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if (node.IsScalar()) {//�DZ�����
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LOG(INFO) << node.as<string>();
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}
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}
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bool CTokenizer::OpenYaml(const char* sz_yamlfile)
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{
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YAML::Node m_Config;
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try{
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m_Config = YAML::LoadFile(sz_yamlfile);
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}catch(exception const &e){
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LOG(INFO) << "Error loading file, yaml file error or not exist.";
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exit(-1);
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}
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try
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{
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auto Tokens = m_Config["token_list"];
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if (Tokens.IsSequence())
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{
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for (size_t i = 0; i < Tokens.size(); ++i)
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{
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if (Tokens[i].IsScalar())
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{
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m_id2token.push_back(Tokens[i].as<string>());
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m_token2id.insert(make_pair<string, int>(Tokens[i].as<string>(), i));
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}
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}
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}
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auto Puncs = m_Config["punc_list"];
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if (Puncs.IsSequence())
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{
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for (size_t i = 0; i < Puncs.size(); ++i)
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{
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if (Puncs[i].IsScalar())
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{
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m_id2punc.push_back(Puncs[i].as<string>());
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m_punc2id.insert(make_pair<string, int>(Puncs[i].as<string>(), i));
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}
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}
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}
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}
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catch (YAML::BadFile& e) {
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LOG(ERROR) << "Read error!";
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return false;
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}
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m_ready = true;
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return m_ready;
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}
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vector<string> CTokenizer::Id2String(vector<int> input)
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{
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vector<string> result;
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for (auto& item : input)
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{
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result.push_back(m_id2token[item]);
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}
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return result;
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}
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int CTokenizer::String2Id(string input)
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{
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int nID = 0; // <blank>
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if (m_token2id.find(input) != m_token2id.end())
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nID=(m_token2id[input]);
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else
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nID=(m_token2id[UNK_CHAR]);
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return nID;
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}
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vector<int> CTokenizer::String2Ids(vector<string> input)
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{
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vector<int> result;
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for (auto& item : input)
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{
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transform(item.begin(), item.end(), item.begin(), ::tolower);
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if (m_token2id.find(item) != m_token2id.end())
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result.push_back(m_token2id[item]);
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else
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result.push_back(m_token2id[UNK_CHAR]);
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}
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return result;
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}
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vector<string> CTokenizer::Id2Punc(vector<int> input)
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{
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vector<string> result;
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for (auto& item : input)
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{
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result.push_back(m_id2punc[item]);
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}
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return result;
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}
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string CTokenizer::Id2Punc(int n_punc_id)
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{
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return m_id2punc[n_punc_id];
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}
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vector<int> CTokenizer::Punc2Ids(vector<string> input)
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{
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vector<int> result;
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for (auto& item : input)
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{
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result.push_back(m_punc2id[item]);
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}
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return result;
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}
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bool CTokenizer::IsPunc(string& Punc)
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{
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if (m_punc2id.find(Punc) != m_punc2id.end())
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return true;
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else
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return false;
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}
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vector<string> CTokenizer::SplitChineseString(const string & str_info)
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{
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vector<string> list;
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int strSize = str_info.size();
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int i = 0;
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while (i < strSize) {
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int len = 1;
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for (int j = 0; j < 6 && (str_info[i] & (0x80 >> j)); j++) {
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len = j + 1;
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}
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list.push_back(str_info.substr(i, len));
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i += len;
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}
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return list;
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}
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void CTokenizer::StrSplit(const string& str, const char split, vector<string>& res)
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{
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if (str == "")
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{
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return;
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}
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string&& strs = str + split;
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size_t pos = strs.find(split);
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while (pos != string::npos)
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{
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res.emplace_back(strs.substr(0, pos));
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strs = move(strs.substr(pos + 1, strs.size()));
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pos = strs.find(split);
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}
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}
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void CTokenizer::Tokenize(const char* str_info, vector<string> & str_out, vector<int> & id_out)
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{
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vector<string> strList;
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StrSplit(str_info,' ', strList);
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string current_eng,current_chinese;
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for (auto& item : strList)
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{
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current_eng = "";
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current_chinese = "";
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for (auto& ch : item)
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{
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if (!(ch& 0x80))
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{ // Ӣ��
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if (current_chinese.size() > 0)
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{
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// for utf-8 chinese
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auto chineseList = SplitChineseString(current_chinese);
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str_out.insert(str_out.end(), chineseList.begin(),chineseList.end());
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current_chinese = "";
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}
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current_eng += ch;
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}
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else
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{
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if (current_eng.size() > 0)
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{
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str_out.push_back(current_eng);
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current_eng = "";
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}
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current_chinese += ch;
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}
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}
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if (current_chinese.size() > 0)
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{
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auto chineseList = SplitChineseString(current_chinese);
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str_out.insert(str_out.end(), chineseList.begin(), chineseList.end());
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current_chinese = "";
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}
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if (current_eng.size() > 0)
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{
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str_out.push_back(current_eng);
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}
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}
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id_out= String2Ids(str_out);
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}
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} // namespace funasr
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