installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / agent / LargeConsoleRead.cc

diff --git a/node_modules/node-pty/deps/winpty/src/agent/LargeConsoleRead.cc b/node_modules/node-pty/deps/winpty/src/agent/LargeConsoleRead.cc
new file mode 100644 (file)
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+++ b/node_modules/node-pty/deps/winpty/src/agent/LargeConsoleRead.cc
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+// Copyright (c) 2015 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.
+
+#include "LargeConsoleRead.h"
+
+#include <stdlib.h>
+
+#include "../shared/WindowsVersion.h"
+#include "Scraper.h"
+#include "Win32ConsoleBuffer.h"
+
+LargeConsoleReadBuffer::LargeConsoleReadBuffer() :
+    m_rect(0, 0, 0, 0), m_rectWidth(0)
+{
+}
+
+void largeConsoleRead(LargeConsoleReadBuffer &out,
+                      Win32ConsoleBuffer &buffer,
+                      const SmallRect &readArea,
+                      WORD attributesMask) {
+    ASSERT(readArea.Left >= 0 &&
+           readArea.Top >= 0 &&
+           readArea.Right >= readArea.Left &&
+           readArea.Bottom >= readArea.Top &&
+           readArea.width() <= MAX_CONSOLE_WIDTH);
+    const size_t count = readArea.width() * readArea.height();
+    if (out.m_data.size() < count) {
+        out.m_data.resize(count);
+    }
+    out.m_rect = readArea;
+    out.m_rectWidth = readArea.width();
+
+    static const bool useLargeReads = isAtLeastWindows8();
+    if (useLargeReads) {
+        buffer.read(readArea, out.m_data.data());
+    } else {
+        const int maxReadLines = std::max(1, MAX_CONSOLE_WIDTH / readArea.width());
+        int curLine = readArea.Top;
+        while (curLine <= readArea.Bottom) {
+            const SmallRect subReadArea(
+                readArea.Left,
+                curLine,
+                readArea.width(),
+                std::min(maxReadLines, readArea.Bottom + 1 - curLine));
+            buffer.read(subReadArea, out.lineDataMut(curLine));
+            curLine = subReadArea.Bottom + 1;
+        }
+    }
+    if (attributesMask != static_cast<WORD>(~0)) {
+        for (size_t i = 0; i < count; ++i) {
+            out.m_data[i].Attributes &= attributesMask;
+        }
+    }
+}