old-nall/windows/registry.hpp
2016-07-03 13:35:22 +02:00

118 lines
4.1 KiB
C++

#pragma once
#include <nall/platform.hpp>
#include <nall/string.hpp>
#include <shlwapi.h>
#undef interface
#ifndef KEY_WOW64_64KEY
#define KEY_WOW64_64KEY 0x0100
#endif
#ifndef KEY_WOW64_32KEY
#define KEY_WOW64_32KEY 0x0200
#endif
#ifndef NWR_FLAGS
#define NWR_FLAGS KEY_WOW64_64KEY
#endif
#ifndef NWR_SIZE
#define NWR_SIZE 4096
#endif
namespace nall {
struct registry {
static auto exists(const string& name) -> bool {
lstring part = name.split("/");
HKEY handle, rootKey = root(part.takeLeft());
string node = part.takeRight();
string path = part.merge("\\");
if(RegOpenKeyExW(rootKey, utf16_t(path), 0, NWR_FLAGS | KEY_READ, &handle) == ERROR_SUCCESS) {
wchar_t data[NWR_SIZE] = L"";
DWORD size = NWR_SIZE * sizeof(wchar_t);
LONG result = RegQueryValueExW(handle, utf16_t(node), nullptr, nullptr, (LPBYTE)&data, (LPDWORD)&size);
RegCloseKey(handle);
if(result == ERROR_SUCCESS) return true;
}
return false;
}
static auto read(const string& name) -> string {
lstring part = name.split("/");
HKEY handle, rootKey = root(part.takeLeft());
string node = part.takeRight();
string path = part.merge("\\");
if(RegOpenKeyExW(rootKey, utf16_t(path), 0, NWR_FLAGS | KEY_READ, &handle) == ERROR_SUCCESS) {
wchar_t data[NWR_SIZE] = L"";
DWORD size = NWR_SIZE * sizeof(wchar_t);
LONG result = RegQueryValueExW(handle, utf16_t(node), nullptr, nullptr, (LPBYTE)&data, (LPDWORD)&size);
RegCloseKey(handle);
if(result == ERROR_SUCCESS) return (const char*)utf8_t(data);
}
return "";
}
static auto write(const string& name, const string& data = "") -> void {
lstring part = name.split("/");
HKEY handle, rootKey = root(part.takeLeft());
string node = part.takeRight(), path;
DWORD disposition;
for(uint n = 0; n < part.size(); n++) {
path.append(part[n]);
if(RegCreateKeyExW(rootKey, utf16_t(path), 0, nullptr, 0, NWR_FLAGS | KEY_ALL_ACCESS, nullptr, &handle, &disposition) == ERROR_SUCCESS) {
if(n == part.size() - 1) {
RegSetValueExW(handle, utf16_t(node), 0, REG_SZ, (BYTE*)(wchar_t*)utf16_t(data), (data.length() + 1) * sizeof(wchar_t));
}
RegCloseKey(handle);
}
path.append("\\");
}
}
static auto remove(const string& name) -> bool {
lstring part = name.split("/");
HKEY rootKey = root(part.takeLeft());
string node = part.takeRight();
string path = part.merge("\\");
if(!node) return SHDeleteKeyW(rootKey, utf16_t(path)) == ERROR_SUCCESS;
return SHDeleteValueW(rootKey, utf16_t(path), utf16_t(node)) == ERROR_SUCCESS;
}
static auto contents(const string& name) -> lstring {
lstring part = name.split("/"), result;
HKEY handle, rootKey = root(part.takeLeft());
part.removeRight();
string path = part.merge("\\");
if(RegOpenKeyExW(rootKey, utf16_t(path), 0, NWR_FLAGS | KEY_READ, &handle) == ERROR_SUCCESS) {
DWORD folders, nodes;
RegQueryInfoKey(handle, nullptr, nullptr, nullptr, &folders, nullptr, nullptr, &nodes, nullptr, nullptr, nullptr, nullptr);
for(uint n = 0; n < folders; n++) {
wchar_t name[NWR_SIZE] = L"";
DWORD size = NWR_SIZE * sizeof(wchar_t);
RegEnumKeyEx(handle, n, (wchar_t*)&name, &size, nullptr, nullptr, nullptr, nullptr);
result.append(string{(const char*)utf8_t(name), "/"});
}
for(uint n = 0; n < nodes; n++) {
wchar_t name[NWR_SIZE] = L"";
DWORD size = NWR_SIZE * sizeof(wchar_t);
RegEnumValueW(handle, n, (wchar_t*)&name, &size, nullptr, nullptr, nullptr, nullptr);
result.append((const char*)utf8_t(name));
}
RegCloseKey(handle);
}
return result;
}
private:
static auto root(const string& name) -> HKEY {
if(name == "HKCR") return HKEY_CLASSES_ROOT;
if(name == "HKCC") return HKEY_CURRENT_CONFIG;
if(name == "HKCU") return HKEY_CURRENT_USER;
if(name == "HKLM") return HKEY_LOCAL_MACHINE;
if(name == "HKU" ) return HKEY_USERS;
return nullptr;
}
};
}