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81 lines
2.6 KiB
81 lines
2.6 KiB
// Copyright (c) 2021 Mobvoi Inc (Binbin Zhang)
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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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#ifndef UTILS_STRING_H_
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#define UTILS_STRING_H_
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#include <codecvt>
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#include <locale>
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#include <memory>
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#include <string>
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#include <vector>
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#include "fst/symbol-table.h"
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namespace wenet {
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const char WHITESPACE[] = " \n\r\t\f\v";
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// Split the string with space or tab.
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void SplitString(const std::string& str, std::vector<std::string>* strs);
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void SplitStringToVector(const std::string& full, const char* delim,
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bool omit_empty_strings,
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std::vector<std::string>* out);
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// NOTE(Xingchen Song): we add this function to make it possible to
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// support multilingual recipe in the future, in which characters of
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// different languages are all encoded in UTF-8 format.
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// UTF-8 REF: https://en.wikipedia.org/wiki/UTF-8#Encoding
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// Split the UTF-8 string into chars.
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void SplitUTF8StringToChars(const std::string& str,
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std::vector<std::string>* chars);
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int UTF8StringLength(const std::string& str);
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// Check whether the UTF-8 char is alphabet or '.
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bool CheckEnglishChar(const std::string& ch);
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// Check whether the UTF-8 word is only contains alphabet or '.
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bool CheckEnglishWord(const std::string& word);
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std::string JoinString(const std::string& c,
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const std::vector<std::string>& strs);
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bool IsAlpha(const std::string& str);
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// Split the UTF-8 string into words by symbol table.
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// Return whether not contains oov.
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bool SplitUTF8StringToWords(
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const std::string& str,
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const std::shared_ptr<fst::SymbolTable>& symbol_table,
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std::vector<std::string>* words);
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// Replace ▁ with space, then remove head, tail and consecutive space.
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std::string ProcessBlank(const std::string& str, bool lowercase);
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std::string Ltrim(const std::string& str);
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std::string Rtrim(const std::string& str);
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std::string Trim(const std::string& str);
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std::string JoinPath(const std::string& left, const std::string& right);
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#ifdef _MSC_VER
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std::wstring ToWString(const std::string& str);
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#endif
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} // namespace wenet
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#endif // UTILS_STRING_H_
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