72 lines
2.7 KiB
Plaintext
72 lines
2.7 KiB
Plaintext
// Copyright (c) 2015 Ryan Prichard
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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#include "LargeConsoleRead.h"
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#include <stdlib.h>
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#include "../shared/WindowsVersion.h"
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#include "Scraper.h"
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#include "Win32ConsoleBuffer.h"
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LargeConsoleReadBuffer::LargeConsoleReadBuffer() :
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m_rect(0, 0, 0, 0), m_rectWidth(0)
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{
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}
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void largeConsoleRead(LargeConsoleReadBuffer &out,
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Win32ConsoleBuffer &buffer,
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const SmallRect &readArea,
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WORD attributesMask) {
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ASSERT(readArea.Left >= 0 &&
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readArea.Top >= 0 &&
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readArea.Right >= readArea.Left &&
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readArea.Bottom >= readArea.Top &&
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readArea.width() <= MAX_CONSOLE_WIDTH);
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const size_t count = readArea.width() * readArea.height();
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if (out.m_data.size() < count) {
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out.m_data.resize(count);
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}
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out.m_rect = readArea;
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out.m_rectWidth = readArea.width();
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static const bool useLargeReads = isAtLeastWindows8();
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if (useLargeReads) {
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buffer.read(readArea, out.m_data.data());
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} else {
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const int maxReadLines = std::max(1, MAX_CONSOLE_WIDTH / readArea.width());
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int curLine = readArea.Top;
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while (curLine <= readArea.Bottom) {
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const SmallRect subReadArea(
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readArea.Left,
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curLine,
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readArea.width(),
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std::min(maxReadLines, readArea.Bottom + 1 - curLine));
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buffer.read(subReadArea, out.lineDataMut(curLine));
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curLine = subReadArea.Bottom + 1;
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}
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}
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if (attributesMask != static_cast<WORD>(~0)) {
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for (size_t i = 0; i < count; ++i) {
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out.m_data[i].Attributes &= attributesMask;
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}
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}
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}
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