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39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
/**
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* \file libimp/codecvt.h
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* \author mutouyun (orz@orzz.org)
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* \brief Character set conversion interface
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* \date 2022-08-07
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*/
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#pragma once
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#include <string>
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#include <cstddef>
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#include "libimp/def.h"
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#include "libimp/export.h"
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LIBIMP_NAMESPACE_BEG_
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/**
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* \brief The transform between UTF-8/16/32
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*
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* \param des The target string pointer can be nullptr
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* \param dlen The target string length can be 0
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*/
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template <typename CharT, typename CharU>
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LIBIMP_EXPORT std::size_t cvt_cstr(CharT const *src, std::size_t slen, CharU *des, std::size_t dlen) noexcept;
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template <typename CharT, typename TraitsT, typename AllocT,
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typename CharU, typename TraitsU, typename AllocU>
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void cvt_sstr(std::basic_string<CharT, TraitsT, AllocT> const &src, std::basic_string<CharU, TraitsU, AllocU> &des) {
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std::size_t dlen = cvt_cstr(src.c_str(), src.size(), (CharU *)nullptr, 0);
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if (dlen == 0) {
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des.clear();
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return;
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}
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des.resize(dlen);
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cvt_cstr(src.c_str(), src.size(), &des[0], des.size());
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}
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LIBIMP_NAMESPACE_END_
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