124 lines
5.4 KiB
JavaScript
124 lines
5.4 KiB
JavaScript
'use strict';
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// ==================================================================================
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// battery.js
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// ----------------------------------------------------------------------------------
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// Description: System Information - library
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// for Node.js
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// Copyright: (c) 2014 - 2017
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// Author: Sebastian Hildebrandt
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// ----------------------------------------------------------------------------------
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// License: MIT
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// ==================================================================================
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// 6. Battery
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// ----------------------------------------------------------------------------------
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const os = require('os');
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const exec = require('child_process').exec;
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const fs = require('fs');
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const util = require('./util');
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let _platform = os.type();
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const _linux = (_platform === 'Linux');
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const _darwin = (_platform === 'Darwin');
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const _windows = (_platform === 'Windows_NT');
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module.exports = function (callback) {
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return new Promise((resolve) => {
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process.nextTick(() => {
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let result = {
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hasbattery: false,
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cyclecount: 0,
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ischarging: false,
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maxcapacity: 0,
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currentcapacity: 0,
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percent: 0
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};
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if (_linux) {
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let battery_path = '';
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if (fs.existsSync('/sys/class/power_supply/BAT1/status')) {
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battery_path = '/sys/class/power_supply/BAT1/';
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} else if (fs.existsSync('/sys/class/power_supply/BAT0/status')) {
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battery_path = '/sys/class/power_supply/BAT0/';
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}
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if (battery_path) {
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exec('cat ' + battery_path + 'status', function (error, stdout) {
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if (!error) {
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let lines = stdout.toString().split('\n');
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if (lines.length > 0 && lines[0]) result.ischarging = (lines[0].trim().toLowerCase() === 'charging');
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}
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exec('cat ' + battery_path + 'cyclec_ount', function (error, stdout) {
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if (!error) {
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let lines = stdout.toString().split('\n');
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if (lines.length > 0 && lines[0]) result.cyclecount = parseFloat(lines[0].trim());
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}
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exec('cat ' + battery_path + 'charge_full', function (error, stdout) {
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if (!error) {
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let lines = stdout.toString().split('\n');
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if (lines.length > 0 && lines[0]) result.maxcapacity = parseFloat(lines[0].trim());
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}
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exec('cat ' + battery_path + 'charge_now', function (error, stdout) {
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if (!error) {
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let lines = stdout.toString().split('\n');
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if (lines.length > 0 && lines[0]) result.currentcapacity = parseFloat(lines[0].trim());
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}
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if (result.maxcapacity && result.currentcapacity) {
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result.hasbattery = true;
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result.percent = 100.0 * result.currentcapacity / result.maxcapacity;
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}
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if (callback) { callback(result); }
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resolve(result);
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});
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});
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});
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});
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} else {
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if (callback) { callback(result); }
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resolve(result);
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}
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}
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if (_darwin) {
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exec("ioreg -n AppleSmartBattery -r | grep '\"CycleCount\"';ioreg -n AppleSmartBattery -r | grep '\"IsCharging\"';ioreg -n AppleSmartBattery -r | grep '\"MaxCapacity\"';ioreg -n AppleSmartBattery -r | grep '\"CurrentCapacity\"'", function (error, stdout) {
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if (!error) {
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let lines = stdout.toString().replace(/ +/g, '').replace(/"+/g, '').split('\n');
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lines.forEach(function (line) {
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if (line.indexOf('=') !== -1) {
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if (line.toLowerCase().indexOf('cyclecount') !== -1) result.cyclecount = parseFloat(line.split('=')[1].trim());
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if (line.toLowerCase().indexOf('ischarging') !== -1) result.ischarging = (line.split('=')[1].trim().toLowerCase() === 'yes');
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if (line.toLowerCase().indexOf('maxcapacity') !== -1) result.maxcapacity = parseFloat(line.split('=')[1].trim());
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if (line.toLowerCase().indexOf('currentcapacity') !== -1) result.currentcapacity = parseFloat(line.split('=')[1].trim());
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}
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});
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}
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if (result.maxcapacity && result.currentcapacity) {
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result.hasbattery = true;
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result.percent = 100.0 * result.currentcapacity / result.maxcapacity;
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}
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if (callback) { callback(result); }
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resolve(result);
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});
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}
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if (_windows) {
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exec('WMIC Path Win32_Battery Get BatteryStatus, DesignCapacity, EstimatedChargeRemaining /value', function (error, stdout) {
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if (stdout) {
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let lines = stdout.split('\r\n');
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let status = util.getValue(lines, 'BatteryStatus', '=').trim();
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if (status) {
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status = parseInt(status || '2');
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result.hasbattery = true;
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result.maxcapacity = parseInt(util.getValue(lines, 'DesignCapacity', '=') || 0);
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result.percent = parseInt(util.getValue(lines, 'EstimatedChargeRemaining', '=') || 0);
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result.currentcapacity = parseInt(result.maxcapacity * result.percent / 100);
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result.ischarging = (status >= 6 && status <= 9) || (!(status === 3) && !(status === 1) && result.percent < 100);
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}
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}
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if (callback) { callback(result); }
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resolve(result);
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});
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}
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});
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});
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};
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