author | František Kučera <franta-hg@frantovo.cz> |
Sun, 25 Jul 2021 11:53:55 +0200 | |
branch | v_0 |
changeset 2 | 7128fabeede0 |
parent 1 | 68a281aefa76 |
permissions | -rw-r--r-- |
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68a281aefa76
import common parser code from relpipe-in-asn1table (85b6f13f1088)
František Kučera <franta-hg@frantovo.cz>
parents:
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/** |
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František Kučera <franta-hg@frantovo.cz>
parents:
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* Relational pipes |
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* Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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František Kučera <franta-hg@frantovo.cz>
parents:
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* the Free Software Foundation, version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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František Kučera <franta-hg@frantovo.cz>
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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|
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#include "AbstractParser.h" |
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#include "TransactionalBuffer.h" |
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namespace relpipe { |
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namespace in { |
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namespace asn1 { |
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namespace lib { |
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|
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class AbstractParserImpl { |
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private: |
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friend AbstractParser; |
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AbstractParser* interface; |
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TransactionalBuffer buffer; |
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public: |
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AbstractParserImpl(AbstractParser* interface) : interface(interface) { |
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} |
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virtual ~AbstractParserImpl() { |
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} |
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}; |
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AbstractParser::AbstractParser() { |
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implementation = new AbstractParserImpl(this); |
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} |
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AbstractParser::~AbstractParser() { |
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delete implementation; |
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} |
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void AbstractParser::write(const uint8_t* buffer, const size_t length) { |
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try { |
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// TODO: do not write to the buffer, just append in read()/peek() and write just the part that was not read during this cycle |
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implementation->buffer.write(buffer, length); |
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// TODO: call an overridable method to get preferred minimum block size and run cycle only if we have enough data or EOF |
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// and/or remember the length of last failed (rollbacked) read() call |
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update(); |
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commit(); |
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} catch (const TransactionalBuffer::ReadBufferUnderflowException& e) { |
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rollback(); |
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} catch (const AbstractParser::ExplicitRollbackException& e) { |
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rollback(); |
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} |
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} |
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void AbstractParser::close() { |
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// TODO: check remaining data + call update() or just let parsers override this method? |
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parents:
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} |
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void AbstractParser::rollback() { |
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František Kučera <franta-hg@frantovo.cz>
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// TODO: notify rollback listeners? (they can monitor the performance / frequency of rollbacks) |
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František Kučera <franta-hg@frantovo.cz>
parents:
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implementation->buffer.rollbackRead(); |
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František Kučera <franta-hg@frantovo.cz>
parents:
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} |
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František Kučera <franta-hg@frantovo.cz>
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void AbstractParser::commit() { |
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František Kučera <franta-hg@frantovo.cz>
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implementation->buffer.commitRead(); |
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František Kučera <franta-hg@frantovo.cz>
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} |
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void AbstractParser::read(uint8_t* buffer, const size_t length) { |
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implementation->buffer.read(buffer, length); |
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František Kučera <franta-hg@frantovo.cz>
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} |
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void AbstractParser::peek(uint8_t* buffer, const size_t length) { |
68a281aefa76
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implementation->buffer.peek(buffer, length); |
68a281aefa76
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František Kučera <franta-hg@frantovo.cz>
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} |
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František Kučera <franta-hg@frantovo.cz>
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František Kučera <franta-hg@frantovo.cz>
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size_t AbstractParser::getBytesRead() { |
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František Kučera <franta-hg@frantovo.cz>
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return implementation->buffer.getBytesRead(); |
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František Kučera <franta-hg@frantovo.cz>
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} |
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} |
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} |
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} |
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} |