vcpkg/toolsrc/src/vcpkg_System.cpp

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#include "pch.h"
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#include "vcpkg_System.h"
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namespace vcpkg::System
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{
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)
{
// Basically we are wrapping it in quotes
const std::wstring& actual_cmd_line = Strings::wformat(LR"###("%s")###", cmd_line);
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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)
{
const std::wstring& actual_cmd_line = Strings::wformat(LR"###("%s")###", cmd_line);
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std::string output;
char buf[1024];
auto pipe = _wpopen(actual_cmd_line.c_str(), L"r");
if (pipe == nullptr)
{
return { 1, output };
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}
while (fgets(buf, 1024, pipe))
{
output.append(buf);
}
if (!feof(pipe))
{
return { 1, output };
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}
auto ec = _pclose(pipe);
return { ec, output };
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}
void print(const char* message)
{
std::cout << message;
}
void println(const char* message)
{
print(message);
std::cout << "\n";
}
void print(const color c, const char* message)
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{
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO consoleScreenBufferInfo{};
GetConsoleScreenBufferInfo(hConsole, &consoleScreenBufferInfo);
auto original_color = consoleScreenBufferInfo.wAttributes;
SetConsoleTextAttribute(hConsole, static_cast<int>(c) | (original_color & 0xF0));
std::cout << message;
SetConsoleTextAttribute(hConsole, original_color);
}
void println(const color c, const char* message)
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{
print(c, message);
std::cout << "\n";
}
optional<std::wstring> get_environmental_variable(const wchar_t* varname) noexcept
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{
wchar_t* buffer;
_wdupenv_s(&buffer, nullptr, varname);
if (buffer == nullptr)
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{
return nullptr;
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}
std::unique_ptr<wchar_t, void(__cdecl *)(void*)> bufptr(buffer, free);
return std::make_unique<std::wstring>(buffer);
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}
void set_environmental_variable(const wchar_t* varname, const wchar_t* varvalue) noexcept
{
_wputenv_s(varname, varvalue);
}
void Stopwatch2::start()
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{
static_assert(sizeof(start_time) == sizeof(LARGE_INTEGER), "");
QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&start_time));
}
void Stopwatch2::stop()
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{
QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&end_time));
QueryPerformanceFrequency(reinterpret_cast<LARGE_INTEGER*>(&freq));
}
double Stopwatch2::microseconds() const
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{
return (reinterpret_cast<const LARGE_INTEGER*>(&end_time)->QuadPart -
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reinterpret_cast<const LARGE_INTEGER*>(&start_time)->QuadPart) * 1000000.0 / reinterpret_cast<const LARGE_INTEGER*>(&freq)->QuadPart;
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}
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}