--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ZeroMQHandler.h Sun May 01 18:24:24 2022 +0200
@@ -0,0 +1,88 @@
+/**
+ * Relational pipes
+ * Copyright © 2022 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 <relpipe/common/type/typedefs.h>
+#include <relpipe/reader/TypeId.h>
+#include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
+#include <relpipe/reader/handlers/AttributeMetadata.h>
+
+#include "ZeroMQ.h"
+#include "Configuration.h"
+#include "Hex.h"
+
+namespace relpipe {
+namespace out {
+namespace zeromq {
+
+class ZeroMQHandler : public relpipe::reader::handlers::RelationalReaderStringHandler {
+private:
+ std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
+ Configuration configuration;
+ shared_ptr<ZeroMQ> mq;
+
+ struct CurrentRelation {
+ relpipe::common::type::StringX name;
+ std::vector<relpipe::reader::handlers::AttributeMetadata> attributes;
+ relpipe::common::type::Integer attributeIndex = 0;
+ std::string currentValue;
+ } currentRelation;
+
+public:
+
+ ZeroMQHandler(Configuration configuration) : configuration(configuration) {
+ // TODO: do not throw exception from the constructor: ZeroMQ::open()
+ mq.reset(ZeroMQ::open(convertor.to_bytes(configuration.queue), configuration.unlinkOnClose));
+ }
+
+ void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {
+ currentRelation = CurrentRelation{name, attributes};
+ }
+
+ void attribute(const relpipe::common::type::StringX& value) override {
+
+ auto attributeName = currentRelation.attributes[currentRelation.attributeIndex].getAttributeName();
+ if (attributeName == L"text" && value.size()) currentRelation.currentValue = convertor.to_bytes(value);
+ else if (attributeName == L"data" && value.size()) currentRelation.currentValue = Hex::fromHex(value).str();
+ else if (attributeName == L"text"); // keep empty or value from 'data'
+ else if (attributeName == L"data"); // keep empty or value from 'text'
+
+ currentRelation.attributeIndex++;
+ if (currentRelation.attributeIndex == currentRelation.attributes.size()) {
+ currentRelation.attributeIndex = 0;
+ mq->send(currentRelation.currentValue);
+ }
+
+ }
+
+ void endOfPipe() {
+
+ }
+
+};
+
+}
+}
+}