68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
// sherpa-onnx/csrc/lexicon.h
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//
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// Copyright (c) 2022-2023 Xiaomi Corporation
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#ifndef SHERPA_ONNX_CSRC_LEXICON_H_
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#define SHERPA_ONNX_CSRC_LEXICON_H_
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#include <cstdint>
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#include <iostream>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include <vector>
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#if __ANDROID_API__ >= 9
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#include "android/asset_manager.h"
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#include "android/asset_manager_jni.h"
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#endif
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namespace sherpa_onnx {
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// TODO(fangjun): Refactor it to an abstract class
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class Lexicon {
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public:
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Lexicon(const std::string &lexicon, const std::string &tokens,
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const std::string &punctuations, const std::string &language,
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bool debug = false);
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#if __ANDROID_API__ >= 9
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Lexicon(AAssetManager *mgr, const std::string &lexicon,
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const std::string &tokens, const std::string &punctuations,
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const std::string &language, bool debug = false);
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#endif
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std::vector<int64_t> ConvertTextToTokenIds(const std::string &text) const;
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private:
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std::vector<int64_t> ConvertTextToTokenIdsEnglish(
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const std::string &text) const;
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std::vector<int64_t> ConvertTextToTokenIdsChinese(
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const std::string &text) const;
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void InitLanguage(const std::string &lang);
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void InitTokens(std::istream &is);
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void InitLexicon(std::istream &is);
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void InitPunctuations(const std::string &punctuations);
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private:
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enum class Language {
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kEnglish,
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kChinese,
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kUnknown,
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};
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private:
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std::unordered_map<std::string, std::vector<int32_t>> word2ids_;
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std::unordered_set<std::string> punctuations_;
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std::unordered_map<std::string, int32_t> token2id_;
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Language language_;
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bool debug_;
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//
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};
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} // namespace sherpa_onnx
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#endif // SHERPA_ONNX_CSRC_LEXICON_H_
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