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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.
#include "Win32ConsoleBuffer.h"
#include <windows.h>
#include "../shared/DebugClient.h"
#include "../shared/StringBuilder.h"
#include "../shared/WinptyAssert.h"
std::unique_ptr<Win32ConsoleBuffer> Win32ConsoleBuffer::openStdout() {
return std::unique_ptr<Win32ConsoleBuffer>(
new Win32ConsoleBuffer(GetStdHandle(STD_OUTPUT_HANDLE), false));
}
std::unique_ptr<Win32ConsoleBuffer> Win32ConsoleBuffer::openConout() {
const HANDLE conout = CreateFileW(L"CONOUT$",
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, NULL);
ASSERT(conout != INVALID_HANDLE_VALUE);
return std::unique_ptr<Win32ConsoleBuffer>(
new Win32ConsoleBuffer(conout, true));
}
std::unique_ptr<Win32ConsoleBuffer> Win32ConsoleBuffer::createErrorBuffer() {
SECURITY_ATTRIBUTES sa = {};
sa.nLength = sizeof(sa);
sa.bInheritHandle = TRUE;
const HANDLE conout =
CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
&sa,
CONSOLE_TEXTMODE_BUFFER,
nullptr);
ASSERT(conout != INVALID_HANDLE_VALUE);
return std::unique_ptr<Win32ConsoleBuffer>(
new Win32ConsoleBuffer(conout, true));
}
HANDLE Win32ConsoleBuffer::conout() {
return m_conout;
}
void Win32ConsoleBuffer::clearLines(
int row,
int count,
const ConsoleScreenBufferInfo &info) {
// TODO: error handling
const int width = info.bufferSize().X;
DWORD actual = 0;
if (!FillConsoleOutputCharacterW(
m_conout, L' ', width * count, Coord(0, row),
&actual) || static_cast<int>(actual) != width * count) {
trace("FillConsoleOutputCharacterW failed");
}
if (!FillConsoleOutputAttribute(
m_conout, kDefaultAttributes, width * count, Coord(0, row),
&actual) || static_cast<int>(actual) != width * count) {
trace("FillConsoleOutputAttribute failed");
}
}
void Win32ConsoleBuffer::clearAllLines(const ConsoleScreenBufferInfo &info) {
clearLines(0, info.bufferSize().Y, info);
}
ConsoleScreenBufferInfo Win32ConsoleBuffer::bufferInfo() {
// TODO: error handling
ConsoleScreenBufferInfo info;
if (!GetConsoleScreenBufferInfo(m_conout, &info)) {
trace("GetConsoleScreenBufferInfo failed");
}
return info;
}
Coord Win32ConsoleBuffer::bufferSize() {
return bufferInfo().bufferSize();
}
SmallRect Win32ConsoleBuffer::windowRect() {
return bufferInfo().windowRect();
}
bool Win32ConsoleBuffer::resizeBufferRange(const Coord &initialSize,
Coord &finalSize) {
if (SetConsoleScreenBufferSize(m_conout, initialSize)) {
finalSize = initialSize;
return true;
}
// The font might be too small to accommodate a very narrow console window.
// In that case, rather than simply give up, it's better to try wider
// buffer sizes until the call succeeds.
Coord size = initialSize;
while (size.X < 20) {
size.X++;
if (SetConsoleScreenBufferSize(m_conout, size)) {
finalSize = size;
trace("SetConsoleScreenBufferSize: initial size (%d,%d) failed, "
"but wider size (%d,%d) succeeded",
initialSize.X, initialSize.Y,
finalSize.X, finalSize.Y);
return true;
}
}
trace("SetConsoleScreenBufferSize failed: "
"tried (%d,%d) through (%d,%d)",
initialSize.X, initialSize.Y,
size.X, size.Y);
return false;
}
void Win32ConsoleBuffer::resizeBuffer(const Coord &size) {
// TODO: error handling
if (!SetConsoleScreenBufferSize(m_conout, size)) {
trace("SetConsoleScreenBufferSize failed: size=(%d,%d)",
size.X, size.Y);
}
}
void Win32ConsoleBuffer::moveWindow(const SmallRect &rect) {
// TODO: error handling
if (!SetConsoleWindowInfo(m_conout, TRUE, &rect)) {
trace("SetConsoleWindowInfo failed");
}
}
Coord Win32ConsoleBuffer::cursorPosition() {
return bufferInfo().dwCursorPosition;
}
void Win32ConsoleBuffer::setCursorPosition(const Coord &coord) {
// TODO: error handling
if (!SetConsoleCursorPosition(m_conout, coord)) {
trace("SetConsoleCursorPosition failed");
}
}
void Win32ConsoleBuffer::read(const SmallRect &rect, CHAR_INFO *data) {
// TODO: error handling
SmallRect tmp(rect);
if (!ReadConsoleOutputW(m_conout, data, rect.size(), Coord(), &tmp) &&
isTracingEnabled()) {
StringBuilder sb(256);
auto outStruct = [&](const SMALL_RECT &sr) {
sb << "{L=" << sr.Left << ",T=" << sr.Top
<< ",R=" << sr.Right << ",B=" << sr.Bottom << '}';
};
sb << "Win32ConsoleBuffer::read: ReadConsoleOutput failed: readRegion=";
outStruct(rect);
CONSOLE_SCREEN_BUFFER_INFO info = {};
if (GetConsoleScreenBufferInfo(m_conout, &info)) {
sb << ", dwSize=(" << info.dwSize.X << ',' << info.dwSize.Y
<< "), srWindow=";
outStruct(info.srWindow);
} else {
sb << ", GetConsoleScreenBufferInfo also failed";
}
trace("%s", sb.c_str());
}
}
void Win32ConsoleBuffer::write(const SmallRect &rect, const CHAR_INFO *data) {
// TODO: error handling
SmallRect tmp(rect);
if (!WriteConsoleOutputW(m_conout, data, rect.size(), Coord(), &tmp)) {
trace("WriteConsoleOutput failed");
}
}
void Win32ConsoleBuffer::setTextAttribute(WORD attributes) {
if (!SetConsoleTextAttribute(m_conout, attributes)) {
trace("SetConsoleTextAttribute failed");
}
}
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