/**
* Relational pipes
* Copyright © 2018 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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 <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <codecvt>
#include <locale>
#include <relpipe/reader/typedefs.h>
#include <relpipe/cli/RelpipeCLIException.h>
using namespace std;
namespace relpipe {
namespace out {
namespace asn1 {
using namespace relpipe::reader;
/**
* A simple library for writing ASN.1 BER encoded files.
*/
class ASN1Writer {
private:
ostream& output;
wstring_convert<codecvt_utf8<wchar_t>> convertor; // only UTF8String is supported
int sequenceLevel = 0;
void xxx_indent() {
// FIXME: remove
for (int i = 0; i < sequenceLevel; i++) output << " ";
}
public:
ASN1Writer(std::ostream& output) : output(output) {
}
virtual ~ASN1Writer() {
if (sequenceLevel) output << "Unable to close ASN1Writer because there are not ended sequences." << endl; // FIXME: better error handling
output.flush();
}
void writeStartSequence() {
xxx_indent();
output << "sequence start" << endl;
sequenceLevel++;
}
void writeEndSequence() {
if (sequenceLevel == 0) throw cli::RelpipeCLIException(L"Unable to writeEndSequence() if not sequence is currently started.", cli::CLI::EXIT_CODE_UNEXPECTED_ERROR); // should not happen, error in the program
sequenceLevel--;
xxx_indent();
output << "sequence end" << endl;
}
void writeBoolean(const boolean_t& value) {
xxx_indent();
output << "boolean" << (value ? "true" : "false") << endl;
}
void writeInteger(const integer_t& value) {
xxx_indent();
output << "integer: " << value << endl;
}
void writeString(const string_t& value) {
xxx_indent();
output << "string: " << convertor.to_bytes(value) << endl;
}
};
}
}
}