installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / agent / NamedPipe.h

diff --git a/node_modules/node-pty/deps/winpty/src/agent/NamedPipe.h b/node_modules/node-pty/deps/winpty/src/agent/NamedPipe.h
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+// Copyright (c) 2011-2012 Ryan Prichard
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#ifndef NAMEDPIPE_H
+#define NAMEDPIPE_H
+
+#include <windows.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "../shared/OwnedHandle.h"
+
+class EventLoop;
+
+class NamedPipe
+{
+private:
+    // The EventLoop uses these private members.
+    friend class EventLoop;
+    NamedPipe() {}
+    ~NamedPipe() { closePipe(); }
+    bool serviceIo(std::vector<HANDLE> *waitHandles);
+    void startPipeWorkers();
+
+    enum class ServiceResult { NoProgress, Error, Progress };
+
+private:
+    class IoWorker
+    {
+    public:
+        IoWorker(NamedPipe &namedPipe);
+        virtual ~IoWorker() {}
+        ServiceResult service();
+        void waitForCanceledIo();
+        HANDLE getWaitEvent();
+    protected:
+        NamedPipe &m_namedPipe;
+        bool m_pending = false;
+        DWORD m_currentIoSize = 0;
+        OwnedHandle m_event;
+        OVERLAPPED m_over = {};
+        enum { kIoSize = 64 * 1024 };
+        char m_buffer[kIoSize];
+        virtual void completeIo(DWORD size) = 0;
+        virtual bool shouldIssueIo(DWORD *size, bool *isRead) = 0;
+    };
+
+    class InputWorker : public IoWorker
+    {
+    public:
+        InputWorker(NamedPipe &namedPipe) : IoWorker(namedPipe) {}
+    protected:
+        virtual void completeIo(DWORD size) override;
+        virtual bool shouldIssueIo(DWORD *size, bool *isRead) override;
+    };
+
+    class OutputWorker : public IoWorker
+    {
+    public:
+        OutputWorker(NamedPipe &namedPipe) : IoWorker(namedPipe) {}
+        DWORD getPendingIoSize();
+    protected:
+        virtual void completeIo(DWORD size) override;
+        virtual bool shouldIssueIo(DWORD *size, bool *isRead) override;
+    };
+
+public:
+    struct OpenMode {
+        typedef int t;
+        enum { None = 0, Reading = 1, Writing = 2, Duplex = 3 };
+    };
+
+    std::wstring name() const { return m_name; }
+    void openServerPipe(LPCWSTR pipeName, OpenMode::t openMode,
+                        int outBufferSize, int inBufferSize);
+    void connectToServer(LPCWSTR pipeName, OpenMode::t openMode);
+    size_t bytesToSend();
+    void write(const void *data, size_t size);
+    void write(const char *text);
+    size_t readBufferSize();
+    void setReadBufferSize(size_t size);
+    size_t bytesAvailable();
+    size_t peek(void *data, size_t size);
+    size_t read(void *data, size_t size);
+    std::string readToString(size_t size);
+    std::string readAllToString();
+    void closePipe();
+    bool isClosed() { return m_handle == nullptr; }
+    bool isConnected() { return !isClosed() && !isConnecting(); }
+    bool isConnecting() { return m_connectEvent.get() != nullptr; }
+
+private:
+    // Input/output buffers
+    std::wstring m_name;
+    OVERLAPPED m_connectOver = {};
+    OwnedHandle m_connectEvent;
+    OpenMode::t m_openMode = OpenMode::None;
+    size_t m_readBufferSize = 64 * 1024;
+    std::string m_inQueue;
+    std::string m_outQueue;
+    HANDLE m_handle = nullptr;
+    std::unique_ptr<InputWorker> m_inputWorker;
+    std::unique_ptr<OutputWorker> m_outputWorker;
+};
+
+#endif // NAMEDPIPE_H