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/* Copyright (C) 2025 J.F.Dockes
*
* License: GPL 2.1
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "powerstatus.h"
#include <mutex>
PowerStatus *theInstance;
std::mutex theMutex;
static PowerStatus::powerstatus theStatus{PowerStatus::ONAC};
PowerStatus::PowerStatus()
{
}
PowerStatus *PowerStatus::instance()
{
std::lock_guard<std::mutex> lock(theMutex);
if (nullptr == theInstance) {
theInstance = new PowerStatus;
}
return theInstance;
}
PowerStatus::powerstatus PowerStatus::set(PowerStatus::powerstatus n)
{
std::lock_guard<std::mutex> lock(theMutex);
auto o = theStatus;
theStatus = n;
return o;
}
static void systemgetpowerstatus();
PowerStatus::powerstatus PowerStatus::get()
{
systemgetpowerstatus();
return theStatus;
}
#if defined(_WIN32)
static void systemgetpowerstatus()
{
// On Windows the status is obtained by a hidden window receiving a system event and calling
// set(), nothing to do. See recollinit.cpp
}
#elif defined(__APPLE__)
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/ps/IOPowerSources.h>
#include <IOKit/ps/IOPSKeys.h>
static bool isRunningOnBattery()
{
// Get power source information
CFTypeRef snapshot = IOPSCopyPowerSourcesInfo();
if (!snapshot) {
return false; // Assume AC power if unable to retrieve info
}
// Check power source state
CFStringRef powerSourceState = IOPSGetProvidingPowerSourceType(snapshot);
bool onBattery =
CFStringCompare(powerSourceState, CFSTR(kIOPSBatteryPowerValue), 0) == kCFCompareEqualTo;
// Clean up
CFRelease(snapshot);
return onBattery;
}
static void systemgetpowerstatus()
{
theStatus = PowerStatus::ONAC;
if (isRunningOnBattery()) {
theStatus = PowerStatus::ONBATTERY;
}
}
#else // Not Windows neither MacOS
#include <fcntl.h>
#include <unistd.h>
// The following is for Linux, will need updates for the BSDs
const static char *statusfile = "/sys/class/power_supply/AC/online";
static void systemgetpowerstatus()
{
theStatus = PowerStatus::ONAC;
int fd = -1;
if (access(statusfile, R_OK) == 0) {
fd = open(statusfile, 0);
if (fd >= 0) {
char buf[1];
if (read(fd, buf, 1) == 1) {
if (buf[0] == '0') {
theStatus = PowerStatus::ONBATTERY;
}
}
}
}
if (fd >= 0)
close(fd);
}
#endif
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