mirror of
https://github.com/OpenMW/openmw.git
synced 2025-10-31 17:56:42 +00:00
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
#include "formid.hpp"
|
|
|
|
#include <charconv>
|
|
#include <cstring>
|
|
|
|
std::string ESM::FormId::toString(std::string_view prefix) const
|
|
{
|
|
std::string res;
|
|
res.resize(prefix.length() + 20);
|
|
std::memcpy(res.data(), prefix.data(), prefix.size());
|
|
char* buf = res.data() + prefix.size();
|
|
uint64_t value;
|
|
if (hasContentFile())
|
|
{
|
|
if ((mIndex & 0xff000000) != 0)
|
|
throw std::invalid_argument("Invalid FormId index value: " + std::to_string(mIndex));
|
|
value = mIndex | (static_cast<uint64_t>(mContentFile) << 24);
|
|
}
|
|
else
|
|
{
|
|
*(buf++) = '@';
|
|
value = mIndex | (static_cast<uint64_t>(-mContentFile - 1) << 32);
|
|
}
|
|
*(buf++) = '0';
|
|
*(buf++) = 'x';
|
|
const auto r = std::to_chars(buf, res.data() + res.size(), value, 16);
|
|
if (r.ec != std::errc())
|
|
throw std::system_error(std::make_error_code(r.ec), "ESM::FormId::toString failed");
|
|
res.resize(r.ptr - res.data());
|
|
return res;
|
|
}
|
|
|
|
uint32_t ESM::FormId::toUint32() const
|
|
{
|
|
if (isSet() && !hasContentFile())
|
|
throw std::runtime_error("Generated FormId can not be converted to 32bit format");
|
|
if (mContentFile > 0xfe)
|
|
throw std::runtime_error("FormId with mContentFile > 0xFE can not be converted to 32bit format");
|
|
return (mIndex & 0xffffff) | ((hasContentFile() ? mContentFile : 0xff) << 24);
|
|
}
|