metaforce/hecl/lib/WideStringConvert.cpp

72 lines
2.0 KiB
C++

#include <logvisor/logvisor.hpp>
#include <utf8proc.h>
namespace hecl {
static logvisor::Module Log("hecl-wsconv");
std::string WideToUTF8(std::wstring_view 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) {
Log.report(logvisor::Warning, FMT_STRING("invalid UTF-8 character while encoding"));
return retval;
}
retval.append(reinterpret_cast<char*>(mb), c);
}
return retval;
}
std::string Char16ToUTF8(std::u16string_view src) {
std::string retval;
retval.reserve(src.length());
for (char16_t ch : src) {
utf8proc_uint8_t mb[4];
utf8proc_ssize_t c = utf8proc_encode_char(utf8proc_int32_t(ch), mb);
if (c < 0) {
Log.report(logvisor::Warning, FMT_STRING("invalid UTF-8 character while encoding"));
return retval;
}
retval.append(reinterpret_cast<char*>(mb), c);
}
return retval;
}
std::wstring UTF8ToWide(std::string_view src) {
std::wstring retval;
retval.reserve(src.length());
const utf8proc_uint8_t* buf = reinterpret_cast<const utf8proc_uint8_t*>(src.data());
while (*buf) {
utf8proc_int32_t wc;
utf8proc_ssize_t len = utf8proc_iterate(buf, -1, &wc);
if (len < 0) {
Log.report(logvisor::Warning, FMT_STRING("invalid UTF-8 character while decoding"));
return retval;
}
buf += len;
retval += wchar_t(wc);
}
return retval;
}
std::u16string UTF8ToChar16(std::string_view src) {
std::u16string retval;
retval.reserve(src.length());
const utf8proc_uint8_t* buf = reinterpret_cast<const utf8proc_uint8_t*>(src.data());
while (*buf) {
utf8proc_int32_t wc;
utf8proc_ssize_t len = utf8proc_iterate(buf, -1, &wc);
if (len < 0) {
Log.report(logvisor::Warning, FMT_STRING("invalid UTF-8 character while decoding"));
return retval;
}
buf += len;
retval += char16_t(wc);
}
return retval;
}
} // namespace hecl