/**
* Relational pipes
* Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include <iostream>
#include <sstream>
#include <locale>
#include <codecvt>
#include <stdexcept>
#include <X11/extensions/XTest.h>
#include <relpipe/common/type/typedefs.h>
#include <relpipe/reader/TypeId.h>
#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
#include <relpipe/reader/handlers/AttributeMetadata.h>
#include "Configuration.h"
namespace relpipe {
namespace out {
namespace x11 {
class X11Handler : public relpipe::reader::handlers::RelationalReaderStringHandler {
private:
class Display {
public:
::Display* display = nullptr;
// TODO: more OOP
virtual ~Display() {
if (display) XCloseDisplay(display);
}
};
Display display;
std::ostream& output; // TODO: remove
Configuration& configuration;
const char QUOTE = '"'; // TODO: remove
std::wstring_convert<std::codecvt_utf8<wchar_t>> convertor; // TODO: probably not needed
std::vector<relpipe::reader::handlers::AttributeMetadata> firstAttributes;
relpipe::common::type::Integer valueCount = 0;
public:
X11Handler(std::ostream& output, Configuration& configuration) : output(output), configuration(configuration) {
display.display = XOpenDisplay(nullptr);
}
void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {
if (display.display) {
if (firstAttributes.empty()) {
firstAttributes = attributes;
if (configuration.writeHeader) for (auto attr : attributes) attribute(attr.getAttributeName());
} else {
throw std::logic_error("Only a single relation can be converted to the X11 format.");
}
} else {
throw std::invalid_argument("Unable to open display. Please check the $DISPLAY variable.");
}
}
void attribute(const relpipe::common::type::StringX& value) override {
valueCount++;
if (value.size() > 0) {
output << QUOTE;
for (auto ch : convertor.to_bytes(value)) {
if (ch == QUOTE) output << QUOTE << QUOTE;
else output << ch;
}
output << QUOTE;
}
if (valueCount % firstAttributes.size()) {
output << ",";
} else {
output << "\r\n";
valueCount = 0;
// XTestFakeKeyEvent(display.display, 38, true, 0);
// XTestFakeKeyEvent(display.display, 38, false, 0);
}
}
void endOfPipe() {
output.flush();
}
};
}
}
}