77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
/**
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* Reading related functions
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*
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* @package vzlogger
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* @copyright Copyright (c) 2011, The volkszaehler.org project
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* @license http://www.gnu.org/licenses/gpl.txt GNU Public License
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* @author Steffen Vogel <info@steffenvogel.de>
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org 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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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* volkzaehler.org 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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* 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 volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _READING_H_
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#define _READING_H_
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#include <sys/time.h>
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#define MAX_IDENTIFIER_LEN 255
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/* Identifiers */
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class ReadingIdentifier {
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public:
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virtual bool operator==(ReadingIdentifier &cmp) = 0;
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virtual void parse(const char *string) = 0;
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virtual size_t unparse(char *buffer, size_t n) = 0;
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};
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class StringIdentifier : public ReadingIdentifier {
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public:
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bool operator==(ReadingIdentifier &cmp);
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void parse(const char *string);
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size_t unparse(char *buffer, size_t n);
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~StringIdentifier();
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protected:
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char *string;
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};
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class ChannelIdentifier : public ReadingIdentifier {
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public:
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bool operator==(ReadingIdentifier &cmp);
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void parse(const char *string);
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size_t unparse(char *buffer, size_t n);
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protected:
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int channel;
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};
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class Reading {
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public:
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static double tvtod(struct timeval tv);
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static struct timeval dtotv(double ts);
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double value;
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struct timeval time;
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ReadingIdentifier *identifier;
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};
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#endif /* _READING_H_ */
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