Пример #1
0
bool try_stou(const pal::string_t& str, unsigned* num)
{
    if (str.empty())
    {
        return false;
    }
    if (str.find_first_not_of(_X("0123456789")) != pal::string_t::npos)
    {
        return false;
    }
    *num = (unsigned) std::stoul(str);
    return true;
}
Пример #2
0
size_t index_of_non_numeric(const pal::string_t& str, unsigned i)
{
    return str.find_first_not_of(_X("0123456789"), i);
}
Пример #3
0
bool parse_internal(const pal::string_t& ver, fx_ver_t* fx_ver, bool parse_only_production)
{
    size_t maj_start = 0;
    size_t maj_sep = ver.find(_X('.'));
    if (maj_sep == pal::string_t::npos)
    {
        return false;
    }
    unsigned major = 0;
    if (!try_stou(ver.substr(maj_start, maj_sep), &major))
    {
        return false;
    }

    size_t min_start = maj_sep + 1;
    size_t min_sep = ver.find(_X('.'), min_start);
    if (min_sep == pal::string_t::npos)
    {
        return false;
    }

    unsigned minor = 0;
    if (!try_stou(ver.substr(min_start, min_sep - min_start), &minor))
    {
        return false;
    }

    unsigned patch = 0;
    size_t pat_start = min_sep + 1;
    size_t pat_sep = ver.find_first_not_of(_X("0123456789"), pat_start);
    if (pat_sep == pal::string_t::npos)
    {
        if (!try_stou(ver.substr(pat_start), &patch))
        {
            return false;
        }

        *fx_ver = fx_ver_t(major, minor, patch);
        return true;
    }

    if (parse_only_production)
    {
        // This is a prerelease or has build suffix.
        return false;
    }

    if (!try_stou(ver.substr(pat_start, pat_sep - pat_start), &patch))
    {
        return false;
    }

    size_t pre_start = pat_sep;
    size_t pre_sep = ver.find(_X('+'), pre_start);
    if (pre_sep == pal::string_t::npos)
    {
        *fx_ver = fx_ver_t(major, minor, patch, ver.substr(pre_start));
        return true;
    }
    else
    {
        size_t build_start = pre_sep + 1;
        *fx_ver = fx_ver_t(major, minor, patch, ver.substr(pre_start, pre_sep - pre_start), ver.substr(build_start));
        return true;
    }
}