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#include "pch.h"
#include "vcpkg_System.h"
namespace vcpkg::System
{
fs::path get_exe_path_of_current_process()
{
wchar_t buf[_MAX_PATH ];
int bytes = GetModuleFileNameW(nullptr, buf, _MAX_PATH);
if (bytes == 0)
std::abort();
return fs::path(buf, buf + bytes);
}
int cmd_execute(const wchar_t* cmd_line)
{
// Flush stdout before launching external process
fflush(stdout);
// Basically we are wrapping it in quotes
const std::wstring& actual_cmd_line = Strings::wformat(LR"###("%s")###", cmd_line);
int exit_code = _wsystem(actual_cmd_line.c_str());
return exit_code;
}
exit_code_and_output cmd_execute_and_capture_output(const wchar_t* cmd_line)
{
// Flush stdout before launching external process
fflush(stdout);
const std::wstring& actual_cmd_line = Strings::wformat(LR"###("%s")###", cmd_line);
std::string output;
char buf[1024];
auto pipe = _wpopen(actual_cmd_line.c_str(), L"r");
if (pipe == nullptr)
{
return { 1, output };
}
while (fgets(buf, 1024, pipe))
{
output.append(buf);
}
if (!feof(pipe))
{
return { 1, output };
}
auto ec = _pclose(pipe);
return { ec, output };
}
std::wstring create_powershell_script_cmd(const fs::path& script_path)
{
return create_powershell_script_cmd(script_path, L"");
}
std::wstring create_powershell_script_cmd(const fs::path& script_path, const std::wstring& args)
{
// TODO: switch out ExecutionPolicy Bypass with "Remove Mark Of The Web" code and restore RemoteSigned
return Strings::wformat(LR"(powershell -ExecutionPolicy Bypass -Command "& {& '%s' %s}")", script_path.native(), args);
}
void print(const char* message)
{
fputs(message, stdout);
}
void println(const char* message)
{
print(message);
putchar('\n');
}
void print(const color c, const char* message)
{
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO consoleScreenBufferInfo{};
GetConsoleScreenBufferInfo(hConsole, &consoleScreenBufferInfo);
auto original_color = consoleScreenBufferInfo.wAttributes;
SetConsoleTextAttribute(hConsole, static_cast<WORD>(c) | (original_color & 0xF0));
print(message);
SetConsoleTextAttribute(hConsole, original_color);
}
void println(const color c, const char* message)
{
print(c, message);
putchar('\n');
}
optional<std::wstring> get_environmental_variable(const wchar_t* varname) noexcept
{
wchar_t* buffer;
_wdupenv_s(&buffer, nullptr, varname);
if (buffer == nullptr)
{
return nullptr;
}
std::unique_ptr<wchar_t, void(__cdecl *)(void*)> bufptr(buffer, free);
return std::make_unique<std::wstring>(buffer);
}
void set_environmental_variable(const wchar_t* varname, const wchar_t* varvalue) noexcept
{
_wputenv_s(varname, varvalue);
}
static bool is_string_keytype(DWORD hkey_type)
{
return hkey_type == REG_SZ || hkey_type == REG_MULTI_SZ || hkey_type == REG_EXPAND_SZ;
}
optional<std::wstring> get_registry_string(HKEY base, const wchar_t* subKey, const wchar_t* valuename)
{
HKEY k = nullptr;
LSTATUS ec = RegOpenKeyExW(base, subKey, NULL, KEY_READ, &k);
if (ec != ERROR_SUCCESS)
return nullptr;
DWORD dwBufferSize = 0;
DWORD dwType = 0;
auto rc = RegQueryValueExW(k, valuename, nullptr, &dwType, nullptr, &dwBufferSize);
if (rc != ERROR_SUCCESS || !is_string_keytype(dwType) || dwBufferSize == 0 || dwBufferSize % sizeof(wchar_t) != 0)
return nullptr;
std::wstring ret;
ret.resize(dwBufferSize / sizeof(wchar_t));
rc = RegQueryValueExW(k, valuename, nullptr, &dwType, reinterpret_cast<LPBYTE>(ret.data()), &dwBufferSize);
if (rc != ERROR_SUCCESS || !is_string_keytype(dwType) || dwBufferSize != sizeof(wchar_t) * ret.size())
return nullptr;
ret.pop_back(); // remove extra trailing null byte
return std::make_unique<std::wstring>(std::move(ret));
}
}
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