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#include "../libfilezilla/glue/registry.hpp"
#include "../libfilezilla/string.hpp"
#include <limits>
namespace fz {
regkey::~regkey()
{
close();
}
regkey::regkey(HKEY const root, std::wstring const& subkey, bool readonly, regview v)
{
open(root, subkey, readonly, v);
}
void regkey::close()
{
if (key_) {
RegCloseKey(*key_);
}
}
bool regkey::open(HKEY const root, std::wstring const& subkey, bool readonly, regview v)
{
close();
HKEY result{};
bool res{};
DWORD flags{};
if (v == regview_32) {
flags |= KEY_WOW64_32KEY;
}
else if (v == regview_64) {
flags |= KEY_WOW64_64KEY;
}
if (readonly) {
res = RegOpenKeyExW(root, subkey.c_str(), 0, KEY_READ | flags, &result) == ERROR_SUCCESS;
}
else {
res = RegCreateKeyExW(root, subkey.c_str(), 0, nullptr, 0, KEY_ALL_ACCESS | flags, nullptr, &result, nullptr) == ERROR_SUCCESS;
}
if (res) {
key_ = result;
}
return res;
}
bool regkey::has_value(std::wstring const& name) const
{
DWORD type{};
DWORD size{};
return key_ && RegQueryValueExW(*key_, name.c_str(), nullptr, &type, nullptr, &size) == ERROR_SUCCESS;
}
namespace {
std::wstring read_string(HKEY key, std::wstring const& name, DWORD size)
{
std::wstring ret;
ret.resize(size / sizeof(wchar_t));
DWORD type{};
if (RegQueryValueExW(key, name.c_str(), nullptr, &type, reinterpret_cast<unsigned char*>(ret.data()), &size) != ERROR_SUCCESS) {
ret.clear();
}
else {
ret.resize(size / sizeof(wchar_t));
if (type != REG_BINARY) {
while (!ret.empty() && !ret.back()) {
ret.pop_back();
}
}
}
return ret;
}
uint64_t read_int(HKEY key, std::wstring const& name)
{
uint64_t v{};
DWORD size = 8;
DWORD type{};
if (RegQueryValueExW(key, name.c_str(), nullptr, &type, reinterpret_cast<unsigned char*>(&v), &size) != ERROR_SUCCESS) {
v = 0;
}
return v;
}
}
std::wstring regkey::value(std::wstring const& name) const
{
std::wstring ret;
if (key_) {
DWORD type{};
DWORD size{};
if (RegQueryValueExW(*key_, name.c_str(), nullptr, &type, nullptr, &size) == ERROR_SUCCESS) {
if (type == REG_SZ || type == REG_EXPAND_SZ || type == REG_BINARY || type == REG_MULTI_SZ) {
ret = read_string(*key_, name, size);
}
else if (type == REG_DWORD || type == REG_QWORD) {
ret = fz::to_wstring(read_int(*key_, name));
}
}
}
return ret;
}
uint64_t regkey::int_value(std::wstring const& name) const
{
uint64_t ret{};
if (key_) {
DWORD type{};
DWORD size{};
if (RegQueryValueExW(*key_, name.c_str(), nullptr, &type, nullptr, &size) == ERROR_SUCCESS) {
if (type == REG_SZ || type == REG_EXPAND_SZ || type == REG_BINARY || type == REG_MULTI_SZ) {
ret = fz::to_integral<uint64_t>(read_string(*key_, name, size));
}
else if (type == REG_DWORD || type == REG_QWORD) {
ret = read_int(*key_, name);
}
}
}
return ret;
}
bool regkey::set_value(std::wstring const& name, std::wstring const& value)
{
return key_ && RegSetValueExW(*key_, name.c_str(), 0, REG_SZ, reinterpret_cast<unsigned char const*>(value.c_str()), static_cast<DWORD>((value.size() + 1) * sizeof(wchar_t))) == ERROR_SUCCESS;
}
bool regkey::set_value(std::wstring const& name, uint64_t value)
{
DWORD size = (value <= std::numeric_limits<DWORD>::max()) ? 4 : 8;
DWORD type = (value <= std::numeric_limits<DWORD>::max()) ? REG_DWORD : REG_QWORD;
return key_ && RegSetValueExW(*key_, name.c_str(), 0, type, reinterpret_cast<unsigned char const*>(&value), size) == ERROR_SUCCESS;
}
bool regkey::delete_value(std::wstring const& name)
{
if (!key_) {
return false;
}
auto ret = RegDeleteValueW(*key_, name.c_str());
return ret == ERROR_SUCCESS || ret == ERROR_FILE_NOT_FOUND;
}
}
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