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#include "stringrefid.hpp"
#include "serializerefid.hpp"
#include <charconv>
#include <iomanip>
#include <mutex>
#include <ostream>
#include <sstream>
#include <system_error>
#include <unordered_set>
#include "components/misc/guarded.hpp"
#include "components/misc/strings/algorithm.hpp"
#include "components/misc/utf8stream.hpp"
namespace ESM
{
namespace
{
using StringsSet = std::unordered_set<std::string, Misc::StringUtils::CiHash, Misc::StringUtils::CiEqual>;
const std::string emptyString;
Misc::ScopeGuarded<StringsSet>& getRefIds()
{
static Misc::ScopeGuarded<StringsSet> refIds;
return refIds;
}
Misc::NotNullPtr<const std::string> getOrInsertString(std::string_view id)
{
const auto locked = getRefIds().lock();
auto it = locked->find(id);
if (it == locked->end())
it = locked->emplace(id).first;
return &*it;
}
void addHex(unsigned char value, std::string& result)
{
const std::size_t size = 2 + getHexIntegralSize(value);
const std::size_t shift = result.size();
result.resize(shift + size);
result[shift] = '\\';
result[shift + 1] = 'x';
const auto [end, ec] = std::to_chars(result.data() + shift + 2, result.data() + result.size(), value, 16);
if (ec != std::errc())
throw std::system_error(std::make_error_code(ec));
}
}
StringRefId::StringRefId()
: mValue(&emptyString)
{
}
StringRefId::StringRefId(std::string_view value)
: mValue(getOrInsertString(value))
{
}
bool StringRefId::operator==(std::string_view rhs) const noexcept
{
return Misc::StringUtils::ciEqual(*mValue, rhs);
}
bool StringRefId::operator<(StringRefId rhs) const noexcept
{
return Misc::StringUtils::ciLess(*mValue, *rhs.mValue);
}
bool operator<(StringRefId lhs, std::string_view rhs) noexcept
{
return Misc::StringUtils::ciLess(*lhs.mValue, rhs);
}
bool operator<(std::string_view lhs, StringRefId rhs) noexcept
{
return Misc::StringUtils::ciLess(lhs, *rhs.mValue);
}
std::ostream& operator<<(std::ostream& stream, StringRefId value)
{
return stream << value.toDebugString();
}
std::string StringRefId::toDebugString() const
{
std::string result;
result.reserve(2 + mValue->size());
result.push_back('"');
const unsigned char* ptr = reinterpret_cast<const unsigned char*>(mValue->data());
const unsigned char* const end = reinterpret_cast<const unsigned char*>(mValue->data() + mValue->size());
while (ptr != end)
{
if (Utf8Stream::isAscii(*ptr))
{
if (std::isprint(*ptr) && *ptr != '\t' && *ptr != '\n' && *ptr != '\r')
result.push_back(*ptr);
else
addHex(*ptr, result);
++ptr;
continue;
}
const auto [octets, first] = Utf8Stream::getOctetCount(*ptr);
const auto [chr, next] = Utf8Stream::decode(ptr + 1, end, first, octets);
if (chr == Utf8Stream::sBadChar())
{
while (ptr != std::min(end, ptr + octets))
{
addHex(*ptr, result);
++ptr;
}
continue;
}
result.append(ptr, next);
ptr = next;
}
result.push_back('"');
return result;
}
bool StringRefId::startsWith(std::string_view prefix) const
{
return Misc::StringUtils::ciStartsWith(*mValue, prefix);
}
bool StringRefId::endsWith(std::string_view suffix) const
{
return Misc::StringUtils::ciEndsWith(*mValue, suffix);
}
bool StringRefId::contains(std::string_view subString) const
{
return Misc::StringUtils::ciFind(*mValue, subString) != std::string_view::npos;
}
std::optional<StringRefId> StringRefId::deserializeExisting(std::string_view value)
{
const auto locked = getRefIds().lock();
auto it = locked->find(value);
if (it == locked->end())
return {};
StringRefId id;
id.mValue = &*it;
return id;
}
}
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