1 /**

     2  * Relational pipes (library)

     3  * Copyright © 2018 František Kučera (Frantovo.cz, GlobalCode.info)

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the:

     7  *  - GNU Lesser General Public License as published by the Free Software Foundation;

     8  *    version 3 of the License or (at your option)

     9  *  - GNU General Public License as published by the Free Software Foundation;

    10  *    version 2 of the License.

    11  *

    12  * This program is distributed in the hope that it will be useful,

    13  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    15  * GNU General Public License for more details.

    16  *

    17  * You should have received a copy of the GNU General Public License

    18  * along with this program. If not, see <http://www.gnu.org/licenses/>.

    19  */

    20 #pragma once

    21 

    22 #include <string>

    23 #include <iostream>

    24 #include <cassert>

    25 #include <limits>

    26 

    27 #include <relpipe/protocol/constants.h>

    28 

    29 #include "../DataTypeWriter.h"

    30 

    31 namespace relpipe {

    32 namespace writer {

    33 namespace types {

    34 

    35 using namespace relpipe::protocol;

    36 using namespace relpipe::writer;

    37 

    38 /**

    39  * Unsigned variable-length integer.

    40  * ULEB128

    41  */

    42 class IntegerDataTypeWriter : public DataTypeWriter<integer_t> { // FIXME: relpipe::common::type::UnsignedInteger

    43 public:

    44 

    45 	IntegerDataTypeWriter() : DataTypeWriter<integer_t>(TypeId::INTEGER, DATA_TYPE_CODE_INTEGER) {

    46 	}

    47 

    48 	void writeValue(std::ostream &output, const integer_t &value) override {

    49 		integer_t v = value;

    50 		do {

    51 			octet_t octet = v & 0x7F;

    52 			v >>= 7;

    53 			if (v) octet |= 0x80; // more bytes follow

    54 			output << char(octet);

    55 		} while (v);

    56 	}

    57 

    58 	integer_t toValue(const string_t &stringValue) override {

    59 		// throws „terminate called after throwing an instance of 'std::invalid_argument'“ SIGABRT, core dumped on invalid number

    60 		return stoul(stringValue);

    61 	}

    62 

    63 };

    64 

    65 }

    66 }

    67 }