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Don't use explicit memory management

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And avoid dangling pointers.
Original PR #16705.
This commit is contained in:
Chocobo1
2022-03-27 14:17:42 +08:00
committed by GitHub
parent ede7c8acbb
commit c621cae43b
9 changed files with 28 additions and 38 deletions
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27
src/base/utils/foreignapps.cpp
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@@ -127,26 +127,17 @@ namespace
QString getRegValue(const HKEY handle, const QString &name = {})
{
QString result;
const std::wstring nameWStr = name.toStdWString();
DWORD type = 0;
DWORD cbData = 0;
LPWSTR lpValueName = NULL;
if (!name.isEmpty())
{
lpValueName = new WCHAR[name.size() + 1];
name.toWCharArray(lpValueName);
lpValueName[name.size()] = 0;
}
// Discover the size of the value
::RegQueryValueExW(handle, lpValueName, NULL, &type, NULL, &cbData);
::RegQueryValueExW(handle, nameWStr.c_str(), NULL, &type, NULL, &cbData);
DWORD cBuffer = (cbData / sizeof(WCHAR)) + 1;
LPWSTR lpData = new WCHAR[cBuffer];
LONG res = ::RegQueryValueExW(handle, lpValueName, NULL, &type, (LPBYTE)lpData, &cbData);
if (lpValueName)
delete[] lpValueName;
LONG res = ::RegQueryValueExW(handle, nameWStr.c_str(), NULL, &type, (LPBYTE)lpData, &cbData);
QString result;
if (res == ERROR_SUCCESS)
{
lpData[cBuffer - 1] = 0;
@@ -185,18 +176,14 @@ namespace
bool found = false;
while (!found && !versions.empty())
{
const QString version = versions.takeLast() + "\\InstallPath";
LPWSTR lpSubkey = new WCHAR[version.size() + 1];
version.toWCharArray(lpSubkey);
lpSubkey[version.size()] = 0;
const std::wstring version = QString(versions.takeLast() + "\\InstallPath").toStdWString();
HKEY hkInstallPath;
res = ::RegOpenKeyExW(hkPythonCore, lpSubkey, 0, samDesired, &hkInstallPath);
delete[] lpSubkey;
res = ::RegOpenKeyExW(hkPythonCore, version.c_str(), 0, samDesired, &hkInstallPath);
if (res == ERROR_SUCCESS)
{
qDebug("Detected possible Python v%s location", qUtf8Printable(version));
qDebug("Detected possible Python v%ls location", version.c_str());
path = getRegValue(hkInstallPath);
::RegCloseKey(hkInstallPath);