/**
* Relational pipes
* Copyright © 2020 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 "Configuration.h"
#include "INIWriter.h"
namespace relpipe {
namespace out {
namespace ini {
class INILiteralHandler : public relpipe::reader::handlers::RelationalReaderStringHandler {
private:
INIWriter& writer;
bool hasSections = false;
relpipe::common::type::StringX currentSection;
std::vector<relpipe::reader::handlers::AttributeMetadata> currentAttributes;
relpipe::common::type::Integer relationCount = 0;
relpipe::common::type::Integer currentAttributeIndex = 0;
public:
INILiteralHandler(INIWriter& writer) : writer(writer) {
}
virtual ~INILiteralHandler() {
}
void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {
if (relationCount) writer.endSection();
currentSection = name;
currentAttributes = attributes;
INIWriter::SectionStartEvent e;
e.name = name;
writer.startSection(e);
hasSections = true;
relationCount++;
}
void attribute(const relpipe::common::type::StringX& value) override {
if (currentAttributeIndex && currentAttributeIndex % currentAttributes.size() == 0) {
currentAttributeIndex = 0;
writer.endSection();
// Usually there should be only one record in each relation.
// But if there are more of them, we will rather create multiple sections with same name (makes more sense)
// than duplicate keys in a single section.
INIWriter::SectionStartEvent e;
e.name = currentSection;
writer.startSection(e);
hasSections = true;
}
INIWriter::EntryEvent e;
e.key = currentAttributes[currentAttributeIndex].getAttributeName();
e.value = value;
writer.entry(e);
currentAttributeIndex++;
}
void endOfPipe() {
if (hasSections) writer.endSection();
}
};
}
}
}