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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;
}
}
}
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