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arangodb/lib/Basics/win-utils.cpp

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Oreste Costa-Panaia
////////////////////////////////////////////////////////////////////////////////
#include <WinSock2.h>
#include <errno.h>
#include <io.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unicode/locid.h>
#include <unicode/uchar.h>
#include <unicode/unistr.h>
#include <wchar.h>
#include <codecvt>
#include <iomanip>
#include <locale>
#include <fcntl.h>
#include "win-utils.h"
#include <VersionHelpers.h>
#include <atlstr.h>
#include <crtdbg.h>
#include <malloc.h>
#include <string.h>
#include <windows.h>
#include "Basics/Common.h"
#include "Basics/StringUtils.h"
#include "Basics/Utf8Helper.h"
#include "Basics/directories.h"
#include "Basics/files.h"
#include "Basics/tri-strings.h"
#include "Basics/ScopeGuard.h"
#include "Logger/Logger.h"
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
#if ARANGODB_ENABLE_BACKTRACE
#include "dbghelp.h"
#endif
#endif
using namespace arangodb::basics;
// .............................................................................
// Some global variables which may be required later
// .............................................................................
_invalid_parameter_handler oldInvalidHandleHandler;
_invalid_parameter_handler newInvalidHandleHandler;
// Windows variant for getpagesize()
int getpagesize(void) {
static int pageSize = 0; // only define it once
if (!pageSize) {
// first time, so call the system info function
SYSTEM_INFO systemInfo;
GetSystemInfo(&systemInfo);
pageSize = systemInfo.dwPageSize;
}
return pageSize;
}
////////////////////////////////////////////////////////////////////////////////
// Sets up a handler when invalid (win) handles are passed to a windows
// function.
// This is not of much use since no values can be returned. All we can do
// for now is to ignore error and hope it goes away!
////////////////////////////////////////////////////////////////////////////////
static void InvalidParameterHandler(const wchar_t* expression, // expression sent to function - NULL
const wchar_t* function, // name of function - NULL
const wchar_t* file, // file where code resides - NULL
unsigned int line, // line within file - NULL
uintptr_t pReserved) { // in case microsoft forget something
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
char buf[1024] = "";
snprintf(buf, sizeof(buf) - 1,
"Expression: %ls Function: %ls File: %ls Line: %d", expression,
function, file, (int)line);
buf[sizeof(buf) - 1] = '\0';
#endif
LOG_TOPIC("e4644", ERR, arangodb::Logger::FIXME)
<< "Invalid handle parameter passed"
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
<< buf;
std::string bt;
TRI_GetBacktrace(bt);
LOG_TOPIC("967e6", ERR, arangodb::Logger::FIXME)
<< "Invalid handle parameter Invoked from: " << bt
#endif
;
}
int initializeWindows(const TRI_win_initialize_e initializeWhat, char const* data) {
// ............................................................................
// The data is used to transport information from the calling function to here
// it may be NULL (and will be in most cases)
// ............................................................................
switch (initializeWhat) {
case TRI_WIN_INITIAL_SET_DEBUG_FLAG: {
_CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF) | _CRTDBG_CHECK_ALWAYS_DF);
return 0;
}
// ...........................................................................
// Assign a handler for invalid handles
// ...........................................................................
case TRI_WIN_INITIAL_SET_INVALID_HANLE_HANDLER: {
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
#if ARANGODB_ENABLE_BACKTRACE
DWORD error;
HANDLE hProcess;
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS);
hProcess = GetCurrentProcess();
if (!SymInitialize(hProcess, NULL, true)) {
// SymInitialize failed
error = GetLastError();
LOG_TOPIC("62b0a", ERR, arangodb::Logger::FIXME)
<< "SymInitialize returned error :" << error;
}
#endif
#endif
newInvalidHandleHandler = InvalidParameterHandler;
oldInvalidHandleHandler = _set_invalid_parameter_handler(newInvalidHandleHandler);
return 0;
}
case TRI_WIN_INITIAL_SET_MAX_STD_IO: {
int* newMax = (int*)(data);
int result = _setmaxstdio(*newMax);
if (result != *newMax) {
return -1;
}
return 0;
}
case TRI_WIN_INITIAL_WSASTARTUP_FUNCTION_CALL: {
int errorCode;
WSADATA wsaData;
WORD wVersionRequested = MAKEWORD(2, 2);
errorCode = WSAStartup(wVersionRequested, &wsaData);
if (errorCode != 0) {
LOG_TOPIC("10456", ERR, arangodb::Logger::FIXME)
<< "Could not find a usable Winsock DLL. WSAStartup returned "
"an error.";
return -1;
}
if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) {
LOG_TOPIC("dbaa4", ERR, arangodb::Logger::FIXME)
<< "Could not find a usable Winsock DLL. WSAStartup did not "
"return version 2.2.";
WSACleanup();
return -1;
}
return 0;
}
default: {
LOG_TOPIC("90c63", ERR, arangodb::Logger::FIXME)
<< "Invalid windows initialization called";
return -1;
}
}
return -1;
}
int TRI_createFile(char const* filename, int openFlags, int modeFlags) {
HANDLE fileHandle;
int fileDescriptor;
icu::UnicodeString fn(filename);
fileHandle =
CreateFileW(reinterpret_cast<const wchar_t*>(fn.getTerminatedBuffer()),
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
(openFlags & O_APPEND) ? OPEN_ALWAYS : CREATE_NEW, 0, NULL);
if (fileHandle == INVALID_HANDLE_VALUE) {
return -1;
}
if (openFlags & O_APPEND) {
SetFilePointer(fileHandle, 0, NULL, FILE_END);
}
fileDescriptor = _open_osfhandle((intptr_t)fileHandle, O_RDWR | _O_BINARY);
return fileDescriptor;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief opens a file for windows
///
/// Creates or opens a file using the windows CreateFile method. Notice below we
/// have used the method CreateFileA to avoid unicode characters - for now
/// anyway.
////////////////////////////////////////////////////////////////////////////////
int TRI_OPEN_WIN32(char const* filename, int openFlags) {
static int const O_ACCMODE = 3;
HANDLE fileHandle;
int fileDescriptor;
DWORD mode;
switch (openFlags & O_ACCMODE) {
case O_RDONLY:
mode = GENERIC_READ;
break;
case O_WRONLY:
mode = GENERIC_WRITE;
break;
case O_RDWR:
mode = GENERIC_READ | GENERIC_WRITE;
break;
}
icu::UnicodeString fn(filename);
fileHandle = CreateFileW(reinterpret_cast<const wchar_t*>(fn.getTerminatedBuffer()),
mode, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, NULL);
if (fileHandle == INVALID_HANDLE_VALUE) {
return -1;
}
fileDescriptor =
_open_osfhandle((intptr_t)(fileHandle), (openFlags & O_ACCMODE) | _O_BINARY);
return fileDescriptor;
}
FILE* TRI_FOPEN(char const* filename, char const* mode) {
icu::UnicodeString fn(filename);
icu::UnicodeString umod(mode);
return _wfopen(reinterpret_cast<const wchar_t*>(fn.getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(umod.getTerminatedBuffer()));
}
int TRI_CHDIR(char const* dirname) {
icu::UnicodeString dn(dirname);
return ::_wchdir(reinterpret_cast<const wchar_t*>(dn.getTerminatedBuffer()));
}
int TRI_STAT(char const* path, TRI_stat_t* buffer) {
icu::UnicodeString p(path);
auto rc = ::_wstat64(reinterpret_cast<const wchar_t*>(p.getTerminatedBuffer()), buffer);
return rc;
}
char* TRI_GETCWD(char* buffer, int maxlen) {
char* rc = nullptr;
try {
auto wbuf = std::make_unique<wchar_t[]>(maxlen);
auto* rcw = ::_wgetcwd(wbuf.get(), maxlen);
if (rcw != nullptr) {
std::string rcs = fromWString(rcw);
if (rcs.length() + 1 < maxlen) {
memcpy(buffer, rcs.c_str(), rcs.length() + 1);
// tolower on hard-drive letter
if ((rcs.length() >= 2) && (buffer[1] == ':') &&
(::isupper(static_cast<unsigned char>(buffer[0])))) {
buffer[0] = ::tolower(static_cast<unsigned char>(buffer[0]));
}
rc = buffer;
}
}
} catch (...) { }
return rc;
}
int TRI_MKDIR_WIN32(char const* dirname) {
icu::UnicodeString dir(dirname);
return ::_wmkdir(reinterpret_cast<const wchar_t*>(dir.getTerminatedBuffer()));
}
int TRI_RMDIR(char const* dirname) {
icu::UnicodeString dir(dirname);
return ::_wrmdir(reinterpret_cast<const wchar_t*>(dir.getTerminatedBuffer()));
}
int TRI_UNLINK(char const* filename) {
icu::UnicodeString fn(filename);
return ::_wunlink(reinterpret_cast<const wchar_t*>(fn.getTerminatedBuffer()));
}
////////////////////////////////////////////////////////////////////////////////
/// @brief converts a Windows error to a *nix system error
////////////////////////////////////////////////////////////////////////////////
arangodb::Result translateWindowsError(DWORD error) {
return {TRI_MapSystemError(error), windowsErrorToUTF8(error)};
}
std::string windowsErrorToUTF8(DWORD errorNum) {
LPWSTR buffer = nullptr;
TRI_DEFER(::LocalFree(buffer);)
size_t size =
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, errorNum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPWSTR)&buffer, 0, nullptr);
if (size) {
std::wstring out(buffer, size);
return fromWString(out);
}
return "error translation failed";
}
int TRI_MapSystemError(DWORD error) {
switch (error) {
case ERROR_INVALID_FUNCTION:
return EINVAL;
case ERROR_FILE_NOT_FOUND:
return ENOENT;
case ERROR_PATH_NOT_FOUND:
return ENOENT;
case ERROR_TOO_MANY_OPEN_FILES:
return EMFILE;
case ERROR_ACCESS_DENIED:
return EACCES;
case ERROR_INVALID_HANDLE:
return EBADF;
case ERROR_NOT_ENOUGH_MEMORY:
return ENOMEM;
case ERROR_INVALID_DATA:
return EINVAL;
case ERROR_OUTOFMEMORY:
return ENOMEM;
case ERROR_INVALID_DRIVE:
return ENODEV;
case ERROR_NOT_SAME_DEVICE:
return EXDEV;
case ERROR_NO_MORE_FILES:
return ENFILE;
case ERROR_WRITE_PROTECT:
return EROFS;
case ERROR_BAD_UNIT:
return ENODEV;
case ERROR_SHARING_VIOLATION:
return EACCES;
case ERROR_LOCK_VIOLATION:
return EACCES;
case ERROR_SHARING_BUFFER_EXCEEDED:
return ENOLCK;
case ERROR_HANDLE_EOF:
return ENODATA;
case ERROR_HANDLE_DISK_FULL:
return ENOSPC;
case ERROR_NOT_SUPPORTED:
return ENOSYS;
case ERROR_REM_NOT_LIST:
return ENFILE;
case ERROR_DUP_NAME:
return EEXIST;
case ERROR_BAD_NETPATH:
return EBADF;
case ERROR_BAD_NET_NAME:
return EBADF;
case ERROR_FILE_EXISTS:
return EEXIST;
case ERROR_CANNOT_MAKE:
return EPERM;
case ERROR_INVALID_PARAMETER:
return EINVAL;
case ERROR_NO_PROC_SLOTS:
return EAGAIN;
case ERROR_BROKEN_PIPE:
return EPIPE;
case ERROR_OPEN_FAILED:
return EIO;
case ERROR_NO_MORE_SEARCH_HANDLES:
return ENFILE;
case ERROR_CALL_NOT_IMPLEMENTED:
return ENOSYS;
case ERROR_INVALID_NAME:
return ENOENT;
case ERROR_WAIT_NO_CHILDREN:
return ECHILD;
case ERROR_CHILD_NOT_COMPLETE:
return EBUSY;
case ERROR_DIR_NOT_EMPTY:
return ENOTEMPTY;
case ERROR_SIGNAL_REFUSED:
return EIO;
case ERROR_BAD_PATHNAME:
return ENOENT;
case ERROR_SIGNAL_PENDING:
return EBUSY;
case ERROR_MAX_THRDS_REACHED:
return EAGAIN;
case ERROR_BUSY:
return EBUSY;
case ERROR_ALREADY_EXISTS:
return EEXIST;
case ERROR_NO_SIGNAL_SENT:
return EIO;
case ERROR_FILENAME_EXCED_RANGE:
return ENAMETOOLONG;
case ERROR_META_EXPANSION_TOO_LONG:
return EINVAL;
case ERROR_INVALID_SIGNAL_NUMBER:
return EINVAL;
case ERROR_THREAD_1_INACTIVE:
return EINVAL;
case ERROR_BAD_PIPE:
return EINVAL;
case ERROR_PIPE_BUSY:
return EBUSY;
case ERROR_NO_DATA:
return EPIPE;
case ERROR_PIPE_NOT_CONNECTED:
return EPIPE;
case ERROR_MORE_DATA:
return EAGAIN;
case ERROR_DIRECTORY:
return ENOTDIR;
case ERROR_PIPE_CONNECTED:
return EBUSY;
case ERROR_PIPE_LISTENING:
return EPIPE;
case ERROR_NO_TOKEN:
return EINVAL;
case ERROR_PROCESS_ABORTED:
return EFAULT;
case ERROR_BAD_DEVICE:
return ENODEV;
case ERROR_BAD_USERNAME:
return EINVAL;
case ERROR_NOT_CONNECTED:
return ENOLINK;
case ERROR_OPEN_FILES:
return EAGAIN;
case ERROR_ACTIVE_CONNECTIONS:
return EAGAIN;
case ERROR_DEVICE_IN_USE:
return EAGAIN;
case ERROR_INVALID_AT_INTERRUPT_TIME:
return EINTR;
case ERROR_IO_DEVICE:
return EIO;
case ERROR_NOT_OWNER:
return EPERM;
case ERROR_END_OF_MEDIA:
return ENOSPC;
case ERROR_EOM_OVERFLOW:
return ENOSPC;
case ERROR_BEGINNING_OF_MEDIA:
return ESPIPE;
case ERROR_SETMARK_DETECTED:
return ESPIPE;
case ERROR_NO_DATA_DETECTED:
return ENOSPC;
case ERROR_POSSIBLE_DEADLOCK:
return EDEADLOCK;
case ERROR_CRC:
return EIO;
case ERROR_NEGATIVE_SEEK:
return EINVAL;
case ERROR_NOT_READY:
return EBADF;
case ERROR_DISK_FULL:
return ENOSPC;
case ERROR_NOACCESS:
return EFAULT;
case ERROR_FILE_INVALID:
return ENXIO;
default:
return EINVAL;
}
}
static HANDLE hEventLog = INVALID_HANDLE_VALUE;
bool TRI_InitWindowsEventLog(void) {
hEventLog = RegisterEventSourceW(NULL, L"ArangoDB");
if (NULL == hEventLog) {
// well, fail then.
return false;
}
return true;
}
void TRI_CloseWindowsEventlog(void) {
DeregisterEventSource(hEventLog);
hEventLog = INVALID_HANDLE_VALUE;
}
// No clue why there is no header for these...
#define MSG_INVALID_COMMAND ((DWORD)0xC0020100L)
#define UI_CATEGORY ((WORD)0x00000003L)
void TRI_LogWindowsEventlog(char const* func, char const* file, int line,
std::string const& message) {
char buf[1024];
char linebuf[32];
TRI_ASSERT(hEventLog != INVALID_HANDLE_VALUE);
snprintf(linebuf, sizeof(linebuf), "%d", line);
DWORD len = _snprintf(buf, sizeof(buf) - 1, "%s", message.c_str());
buf[sizeof(buf) - 1] = '\0';
icu::UnicodeString ubufs[]{icu::UnicodeString(buf, len), icu::UnicodeString(file),
icu::UnicodeString(func), icu::UnicodeString(linebuf)};
LPCWSTR buffers[] = {
reinterpret_cast<const wchar_t*>(ubufs[0].getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(ubufs[1].getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(ubufs[2].getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(ubufs[3].getTerminatedBuffer()), nullptr};
// Try to get messages through to windows syslog...
if (!ReportEventW(hEventLog, EVENTLOG_ERROR_TYPE, UI_CATEGORY,
MSG_INVALID_COMMAND, NULL, 4, 0, buffers, NULL)) {
// well, fail then...
}
}
void TRI_LogWindowsEventlog(char const* func, char const* file, int line,
char const* fmt, va_list ap) {
char buf[1024];
char linebuf[32];
TRI_ASSERT(hEventLog != INVALID_HANDLE_VALUE);
snprintf(linebuf, sizeof(linebuf), "%d", line);
DWORD len = _vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
buf[sizeof(buf) - 1] = '\0';
icu::UnicodeString ubufs[]{icu::UnicodeString(buf, len), icu::UnicodeString(file),
icu::UnicodeString(func), icu::UnicodeString(linebuf)};
LPCWSTR buffers[] = {
reinterpret_cast<const wchar_t*>(ubufs[0].getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(ubufs[1].getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(ubufs[2].getTerminatedBuffer()),
reinterpret_cast<const wchar_t*>(ubufs[3].getTerminatedBuffer()), nullptr};
// Try to get messages through to windows syslog...
if (!ReportEventW(hEventLog, EVENTLOG_ERROR_TYPE, UI_CATEGORY,
MSG_INVALID_COMMAND, NULL, 4, 0, buffers, NULL)) {
// well, fail then...
}
}
void TRI_WindowsEmergencyLog(char const* func, char const* file, int line,
char const* fmt, ...) {
va_list ap;
va_start(ap, fmt);
TRI_LogWindowsEventlog(func, file, line, fmt, ap);
va_end(ap);
}
void ADB_WindowsEntryFunction() {
int maxOpenFiles = 2048;
int res = 0;
// ...........................................................................
// Uncomment this to call this for extended debug information.
// If you familiar with valgrind ... then this is not like that, however
// you do get some similar functionality.
// ...........................................................................
// res = initializeWindows(TRI_WIN_INITIAL_SET_DEBUG_FLAG, 0);
res = initializeWindows(TRI_WIN_INITIAL_SET_INVALID_HANLE_HANDLER, 0);
if (res != 0) {
_exit(EXIT_FAILURE);
}
res = initializeWindows(TRI_WIN_INITIAL_SET_MAX_STD_IO, (char const*)(&maxOpenFiles));
if (res != 0) {
_exit(EXIT_FAILURE);
}
res = initializeWindows(TRI_WIN_INITIAL_WSASTARTUP_FUNCTION_CALL, 0);
if (res != 0) {
_exit(EXIT_FAILURE);
}
TRI_Application_Exit_SetExit(ADB_WindowsExitFunction);
}
TRI_serviceAbort_t serviceAbort = nullptr;
void TRI_SetWindowsServiceAbortFunction(TRI_serviceAbort_t f) {
serviceAbort = f;
}
void ADB_WindowsExitFunction(int exitCode, void* data) {
if (serviceAbort != nullptr) {
serviceAbort(exitCode);
}
_exit(exitCode);
}
// Detect cygwin ssh / terminals
int _cyg_isatty(int fd) {
// detect standard windows ttys:
if (_isatty(fd)) {
return 1;
}
// stupid hack to allow forcing a tty..need to understand this better
// and create a thorough fix..without this the logging stuff will not
// log to the foreground which is super annoying for debugging the
// resilience tests
char* forcetty = getenv("FORCE_WINDOWS_TTY");
if (forcetty != nullptr) {
return strcmp(forcetty, "1") == 0;
}
HANDLE fh;
char buff[sizeof(FILE_NAME_INFO) + sizeof(WCHAR) * MAX_PATH];
FILE_NAME_INFO* FileInformation = (FILE_NAME_INFO*)buff;
/* get the HANDLE for the filedescriptor. */
fh = (HANDLE)_get_osfhandle(fd);
if (!fh || fh == INVALID_HANDLE_VALUE) {
return 0;
}
/* Cygwin consoles are pipes. If its not, no reason to continue: */
if (GetFileType(fh) != FILE_TYPE_PIPE) {
return 0;
}
if (!GetFileInformationByHandleEx(fh, FileNameInfo, FileInformation, sizeof(buff))) {
return 0;
}
// we expect something along the lines of:
// \cygwin-0eb90a57d5759b7b-pty3-to-master?? - if we find it its a tty.
PWCHAR cp = (PWCHAR)FileInformation->FileName;
if (!wcsncmp(cp, L"\\cygwin-", 8) && !wcsncmp(cp + 24, L"-pty", 4)) {
cp = wcschr(cp + 28, '-');
if (!cp) {
return 0;
}
if (!wcsncmp(cp, L"-from-master", sizeof("-from-master") - 1) ||
!wcsncmp(cp, L"-to-master", sizeof("-to-master") - 1)) {
return 1;
}
}
errno = EINVAL;
return 0;
}
// Detect cygwin ssh / terminals
int _is_cyg_tty(int fd) {
// detect standard windows ttys:
if (_isatty(fd)) {
return 0;
}
HANDLE fh;
char buff[sizeof(FILE_NAME_INFO) + sizeof(WCHAR) * MAX_PATH];
FILE_NAME_INFO* FileInformation = (FILE_NAME_INFO*)buff;
/* get the HANDLE for the filedescriptor. */
fh = (HANDLE)_get_osfhandle(fd);
if (!fh || fh == INVALID_HANDLE_VALUE) {
return 0;
}
/* Cygwin consoles are pipes. If its not, no reason to continue: */
if (GetFileType(fh) != FILE_TYPE_PIPE) {
return 0;
}
if (!GetFileInformationByHandleEx(fh, FileNameInfo, FileInformation, sizeof(buff))) {
return 0;
}
// we expect something along the lines of:
// \cygwin-0eb90a57d5759b7b-pty3-to-master?? - if we find it its a tty.
PWCHAR cp = (PWCHAR)FileInformation->FileName;
if (!wcsncmp(cp, L"\\cygwin-", 8) && !wcsncmp(cp + 24, L"-pty", 4)) {
cp = wcschr(cp + 28, '-');
if (!cp) {
return 0;
}
if (!wcsncmp(cp, L"-from-master", sizeof("-from-master") - 1) ||
!wcsncmp(cp, L"-to-master", sizeof("-to-master") - 1)) {
return 1;
}
}
errno = EINVAL;
return 0;
}
bool terminalKnowsANSIColors() {
if (_is_cyg_tty(STDOUT_FILENO)) {
// Its a cygwin shell, expected to understand ANSI color codes.
return true;
}
// Windows 8 onwards the CMD window understands ANSI-Colorcodes.
return IsWindows8OrGreater();
}
std::string getFileNameFromHandle(HANDLE fileHandle) {
char buff[sizeof(FILE_NAME_INFO) + sizeof(WCHAR) * MAX_PATH];
FILE_NAME_INFO* FileInformation = (FILE_NAME_INFO*)buff;
if (!GetFileInformationByHandleEx(fileHandle, FileNameInfo, FileInformation, sizeof(buff))) {
return std::string();
}
return std::string((LPCTSTR)CString(FileInformation->FileName));
}
static std::vector<std::string> argVec;
void TRI_GET_ARGV_WIN(int& argc, char** argv) {
auto wargStr = GetCommandLineW();
// if you want your argc in unicode, all you gonna do
// is ask:
auto wargv = CommandLineToArgvW(wargStr, &argc);
argVec.reserve(argc);
icu::UnicodeString buf;
std::string uBuf;
for (int i = 0; i < argc; i++) {
uBuf.clear();
// convert one UTF16 argument to utf8:
buf = wargv[i];
buf.toUTF8String<std::string>(uBuf);
// memorize the utf8 value to keep the instance:
argVec.push_back(uBuf);
// Now overwrite our original argc entry with the utf8 one:
argv[i] = (char*)argVec[i].c_str();
}
}
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