discord-rpc: Formatting

3rdparty/discord-rpc/discord_connection_win.cpp

@@ -0,0 +1,137 @@
+#include "discord_connection.h"
+
+#define WIN32_LEAN_AND_MEAN
+#define NOMCX
+#define NOSERVICE
+#define NOIME
+
+#include <cassert>
+#include <windows.h>
+
+namespace discord_rpc {
+
+int GetProcessId() {
+  return static_cast<int>(::GetCurrentProcessId());
+}
+
+struct BaseConnectionWin : public BaseConnection {
+  HANDLE pipe { INVALID_HANDLE_VALUE };
+};
+
+static BaseConnectionWin Connection;
+
+BaseConnection *BaseConnection::Create() {
+  return &Connection;
+}
+
+void BaseConnection::Destroy(BaseConnection *&c) {
+
+  auto self = reinterpret_cast<BaseConnectionWin*>(c);
+  self->Close();
+  c = nullptr;
+
+}
+
+bool BaseConnection::Open() {
+
+  wchar_t pipeName[] { L"\\\\?\\pipe\\discord-ipc-0" };
+  const size_t pipeDigit = sizeof(pipeName) / sizeof(wchar_t) - 2;
+  pipeName[pipeDigit] = L'0';
+  auto self = reinterpret_cast<BaseConnectionWin *>(this);
+  for (;;) {
+    self->pipe = ::CreateFileW(pipeName, GENERIC_READ | GENERIC_WRITE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
+    if (self->pipe != INVALID_HANDLE_VALUE) {
+      self->isOpen = true;
+      return true;
+    }
+
+    auto lastError = GetLastError();
+    if (lastError == ERROR_FILE_NOT_FOUND) {
+      if (pipeName[pipeDigit] < L'9') {
+        pipeName[pipeDigit]++;
+        continue;
+      }
+    }
+    else if (lastError == ERROR_PIPE_BUSY) {
+      if (!WaitNamedPipeW(pipeName, 10000)) {
+        return false;
+      }
+      continue;
+    }
+    return false;
+  }
+
+}
+
+bool BaseConnection::Close() {
+
+  auto self = reinterpret_cast<BaseConnectionWin *>(this);
+  ::CloseHandle(self->pipe);
+  self->pipe = INVALID_HANDLE_VALUE;
+  self->isOpen = false;
+
+  return true;
+
+}
+
+bool BaseConnection::Write(const void *data, size_t length) {
+
+  if (length == 0) {
+    return true;
+  }
+  auto self = reinterpret_cast<BaseConnectionWin *>(this);
+  assert(self);
+  if (!self) {
+    return false;
+  }
+  if (self->pipe == INVALID_HANDLE_VALUE) {
+    return false;
+  }
+  assert(data);
+  if (!data) {
+    return false;
+  }
+  const DWORD bytesLength = static_cast<DWORD>(length);
+  DWORD bytesWritten = 0;
+
+  return ::WriteFile(self->pipe, data, bytesLength, &bytesWritten, nullptr) == TRUE && bytesWritten == bytesLength;
+
+}
+
+bool BaseConnection::Read(void *data, size_t length) {
+
+  assert(data);
+  if (!data) {
+    return false;
+  }
+  auto self = reinterpret_cast<BaseConnectionWin *>(this);
+  assert(self);
+  if (!self) {
+    return false;
+  }
+  if (self->pipe == INVALID_HANDLE_VALUE) {
+    return false;
+  }
+  DWORD bytesAvailable = 0;
+  if (::PeekNamedPipe(self->pipe, nullptr, 0, nullptr, &bytesAvailable, nullptr)) {
+    if (bytesAvailable >= length) {
+      DWORD bytesToRead = static_cast<DWORD>(length);
+      DWORD bytesRead = 0;
+      if (::ReadFile(self->pipe, data, bytesToRead, &bytesRead, nullptr) == TRUE) {
+        assert(bytesToRead == bytesRead);
+        return true;
+      }
+      else {
+        Close();
+      }
+    }
+  }
+  else {
+    Close();
+  }
+
+  return false;
+
+}
+
+}  // namespace discord_rpc