static unsafe int _RunConsole(Action <string> outAction, StringBuilder outStr, string exe, string args, string curDir, Encoding encoding, bool needLines)
{
exe = _NormalizeFile(true, exe, out _, out _);
//args = pathname.expand(args); //rejected
encoding ??= Console.OutputEncoding; //fast. Default is an internal type System.Text.OSEncoding that wraps API GetConsoleOutputCP.
var decoder = encoding.GetDecoder(); //ensures we'll not get partial multibyte chars (UTF8 etc) at buffer end/start
var ps = new ProcessStarter_(exe, args, curDir, rawExe: true);
Handle_ hProcess = default;
var sa = new Api.SECURITY_ATTRIBUTES(null)
{
bInheritHandle = 1
};
if (!Api.CreatePipe(out Handle_ hOutRead, out Handle_ hOutWrite, sa, 0))
{
throw new AuException(0);
}
byte * b = null; //buffer before decoding
char * c = null; //buffer after decoding
StringBuilder sb = null; //holds part of line when buffer does not end with newline
try {
Api.SetHandleInformation(hOutRead, 1, 0); //remove HANDLE_FLAG_INHERIT
ps.si.dwFlags |= Api.STARTF_USESTDHANDLES | Api.STARTF_USESHOWWINDOW;
ps.si.hStdOutput = hOutWrite;
ps.si.hStdError = hOutWrite;
ps.flags |= Api.CREATE_NEW_CONSOLE;
if (!ps.StartL(out var pi, inheritHandles: true))
{
throw new AuException(0);
}
hOutWrite.Dispose(); //important: must be here
pi.hThread.Dispose();
hProcess = pi.hProcess;
//native console API allows any buffer size when writing, but wrappers usually use small buffer, eg .NET 4-5 KB, msvcrt 5 KB, C++ not tested
const int bSize = 8000, cSize = bSize + 10;
b = MemoryUtil.Alloc(bSize);
for (bool skipN = false; ;)
{
if (Api.ReadFile(hOutRead, b, bSize, out int nr))
{
if (nr == 0)
{
continue;
}
}
else
{
if (lastError.code != Api.ERROR_BROKEN_PIPE)
{
throw new AuException(0);
}
//process ended
if (sb != null && sb.Length > 0)
{
outAction(sb.ToString());
}
break;
}
if (c == null)
{
c = MemoryUtil.Alloc <char>(cSize);
}
int nc = decoder.GetChars(b, nr, c, cSize, false);
if (needLines)
{
var k = new Span <char>(c, nc);
if (skipN)
{
skipN = false;
if (c[0] == '\n' && nc > 0)
{
k = k[1..]; //\r\n split in 2 buffers
public bool WaitAndRead(WaitHandle hProcess, Action <string> results)
{
bool R = false;
char *b = null; const int bLen = 7900;
var ev = new ManualResetEvent(false);
try {
var ha = new WaitHandle[2] {
ev, hProcess
};
for (bool useSB = false; ; useSB = results == null)
{
var o = new Api.OVERLAPPED {
hEvent = ev.SafeWaitHandle.DangerousGetHandle()
};
if (!Api.ConnectNamedPipe(_hPipe, &o))
{
int e = lastError.code;
if (e != Api.ERROR_PIPE_CONNECTED)
{
if (e != Api.ERROR_IO_PENDING)
{
break;
}
int wr = WaitHandle.WaitAny(ha);
if (wr != 0)
{
Api.CancelIo(_hPipe); R = true; break;
} //task ended
if (!Api.GetOverlappedResult(_hPipe, ref o, out _, false))
{
Api.DisconnectNamedPipe(_hPipe); break;
}
}
}
if (b == null)
{
b = (char *)MemoryUtil.Alloc(bLen);
}
bool readOK;
while (((readOK = Api.ReadFile(_hPipe, b, bLen, out int n, null)) || (lastError.code == Api.ERROR_MORE_DATA)) && n > 0)
{
n /= 2;
if (!readOK)
{
useSB = true;
}
if (useSB) //rare
{
_sb ??= new StringBuilder(bLen);
if (results == null && _s != null)
{
_sb.Append(_s);
}
_s = null;
_sb.Append(b, n);
}
else
{
_s = new string(b, 0, n);
}
if (readOK)
{
if (results != null)
{
results(ResultString);
_sb?.Clear();
}
break;
}
//note: MSDN says must use OVERLAPPED with ReadFile too, but works without it.
}
Api.DisconnectNamedPipe(_hPipe);
if (!readOK)
{
break;
}
}
}
finally {
ev.Dispose();
MemoryUtil.Free(b);
}
return(R);
}
