mirror of
https://github.com/Llewellynvdm/conky.git
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77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
/* -*- mode: c++; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
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* vim: ts=4 sw=4 noet ai cindent syntax=cpp
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*
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* temphelper.c: aid in converting temperature units
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*
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* Copyright (C) 2008 Phil Sutter <Phil@nwl.cc>
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*
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* This library 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 2 of the License, or
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* (at your option) any later version.
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*
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* This library 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 this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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* USA.
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*
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include "temphelper.h"
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#include "conky.h"
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template<>
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conky::lua_traits<TEMP_UNIT>::Map conky::lua_traits<TEMP_UNIT>::map = {
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{ "celsius", TEMP_CELSIUS },
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{ "fahrenheit", TEMP_FAHRENHEIT }
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};
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static conky::simple_config_setting<TEMP_UNIT> output_unit("temperature_unit",
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TEMP_CELSIUS, true);
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static double fahrenheit_to_celsius(double n)
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{
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return ((n - 32) * 5 / 9);
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}
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static double celsius_to_fahrenheit(double n)
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{
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return ((n * 9 / 5) + 32);
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}
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static double convert_temp_output(double n, enum TEMP_UNIT input_unit)
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{
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if (input_unit == output_unit.get(*state))
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return n;
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switch(output_unit.get(*state)) {
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case TEMP_CELSIUS:
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return fahrenheit_to_celsius(n);
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case TEMP_FAHRENHEIT:
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return celsius_to_fahrenheit(n);
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}
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/* NOT REACHED */
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return 0.0;
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}
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int temp_print(char *p, size_t p_max_size, double n, enum TEMP_UNIT input_unit)
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{
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int out;
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size_t plen;
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out = round_to_int_temp(convert_temp_output(n, input_unit));
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plen = spaced_print(p, p_max_size, "%d", 3, out);
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return !(plen >= p_max_size);
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}
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