installed pty

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

diff --git a/node_modules/node-pty/deps/winpty/src/agent/Scraper.h b/node_modules/node-pty/deps/winpty/src/agent/Scraper.h
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+// Copyright (c) 2011-2016 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 AGENT_SCRAPER_H
+#define AGENT_SCRAPER_H
+
+#include <windows.h>
+
+#include <stdint.h>
+
+#include <memory>
+#include <vector>
+
+#include "ConsoleLine.h"
+#include "Coord.h"
+#include "LargeConsoleRead.h"
+#include "SmallRect.h"
+#include "Terminal.h"
+
+class ConsoleScreenBufferInfo;
+class Win32Console;
+class Win32ConsoleBuffer;
+
+// We must be able to issue a single ReadConsoleOutputW call of
+// MAX_CONSOLE_WIDTH characters, and a single read of approximately several
+// hundred fewer characters than BUFFER_LINE_COUNT.
+const int BUFFER_LINE_COUNT = 3000;
+const int MAX_CONSOLE_WIDTH = 2500;
+const int MAX_CONSOLE_HEIGHT = 2000;
+const int SYNC_MARKER_LEN = 16;
+const int SYNC_MARKER_MARGIN = 200;
+
+class Scraper {
+public:
+    Scraper(
+        Win32Console &console,
+        Win32ConsoleBuffer &buffer,
+        std::unique_ptr<Terminal> terminal,
+        Coord initialSize);
+    ~Scraper();
+    void resizeWindow(Win32ConsoleBuffer &buffer,
+                      Coord newSize,
+                      ConsoleScreenBufferInfo &finalInfoOut);
+    void scrapeBuffer(Win32ConsoleBuffer &buffer,
+                      ConsoleScreenBufferInfo &finalInfoOut);
+    Terminal &terminal() { return *m_terminal; }
+
+private:
+    void resetConsoleTracking(
+        Terminal::SendClearFlag sendClear, int64_t scrapedLineCount);
+    void markEntireWindowDirty(const SmallRect &windowRect);
+    void scanForDirtyLines(const SmallRect &windowRect);
+    void clearBufferLines(int firstRow, int count);
+    void resizeImpl(const ConsoleScreenBufferInfo &origInfo);
+    void syncConsoleContentAndSize(bool forceResize,
+                                   ConsoleScreenBufferInfo &finalInfoOut);
+    WORD attributesMask();
+    void directScrapeOutput(const ConsoleScreenBufferInfo &info,
+                            bool consoleCursorVisible);
+    bool scrollingScrapeOutput(const ConsoleScreenBufferInfo &info,
+                               bool consoleCursorVisible,
+                               bool tentative);
+    void syncMarkerText(CHAR_INFO (&output)[SYNC_MARKER_LEN]);
+    int findSyncMarker();
+    void createSyncMarker(int row);
+
+private:
+    Win32Console &m_console;
+    Win32ConsoleBuffer *m_consoleBuffer = nullptr;
+    std::unique_ptr<Terminal> m_terminal;
+
+    int m_syncRow = -1;
+    unsigned int m_syncCounter = 0;
+
+    bool m_directMode = false;
+    Coord m_ptySize;
+    int64_t m_scrapedLineCount = 0;
+    int64_t m_scrolledCount = 0;
+    int64_t m_maxBufferedLine = -1;
+    LargeConsoleReadBuffer m_readBuffer;
+    std::vector<ConsoleLine> m_bufferData;
+    int m_dirtyWindowTop = -1;
+    int m_dirtyLineCount = 0;
+};
+
+#endif // AGENT_SCRAPER_H