Function fromLocaleMB

library/Console-posix.cpp:166–182

Convert a locale defined multibyte coding to UTF-32 string for easier character processing.

//! Convert a locale defined multibyte coding to UTF-32 string for easier
//! character processing.
static u32string fromLocaleMB(const std::string& str)
{
    u32string rv;
    u32string::value_type ch;
    size_t pos = 0;
    ssize_t sz;
    std::mbstate_t state{};
    while ((sz = mbrtoc32(&ch,&str[pos], str.size() - pos, &state)) != 0) {
        if (sz == -1 || sz == -2)
            break;
        rv.push_back(ch);
        if (sz == -3) /* multi value character */
            continue;
        pos += sz;
    }
    return rv;
}

//! Convert a UTF-32 string back to locale defined multibyte coding.
static std::string toLocaleMB(const u32string& wstr)