kabufuda/lib/kabufuda/WideStringConvert.cpp

44 lines
1.1 KiB
C++

#include "kabufuda/WideStringConvert.hpp"
#include "utf8proc.h"
namespace kabufuda
{
std::string WideToUTF8(const std::wstring& src)
{
std::string retval;
retval.reserve(src.length());
for (wchar_t ch : src)
{
utf8proc_uint8_t mb[4];
utf8proc_ssize_t c = utf8proc_encode_char(utf8proc_int32_t(ch), mb);
if (c < 0)
{
fprintf(stderr, "invalid UTF-8 character while encoding");
return retval;
}
retval.append(reinterpret_cast<char*>(mb), c);
}
return retval;
}
std::wstring UTF8ToWide(const std::string& src)
{
std::wstring retval;
retval.reserve(src.length());
const utf8proc_uint8_t* buf = reinterpret_cast<const utf8proc_uint8_t*>(src.c_str());
while (*buf)
{
utf8proc_int32_t wc;
utf8proc_ssize_t len = utf8proc_iterate(buf, -1, &wc);
if (len < 0)
{
fprintf(stderr, "invalid UTF-8 character while decoding");
return retval;
}
buf += len;
retval += wchar_t(wc);
}
return retval;
}
}