comfortable-swipe/lib/service/stop.cpp
2019-02-12 19:04:31 +08:00

74 lines
2.0 KiB
C++

#ifndef __COMFORTABLE_SWIPE__service_stop__
#define __COMFORTABLE_SWIPE__service_stop__
#include <cstdio> // std::FILE, std::feof, std::fgets
#include <cstdlib> // std::atoi, std::system
#include <string> // std::string, std::to_string
/*
Comfortable Swipe
by Rico Tiongson
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 3 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdexcept> // std::runtime_error
#include <unistd.h> // popen, pclose, getpid
namespace comfortable_swipe::service
{
/**
* Stops all comfortable-swipe instances.
*/
void stop()
{
// read all service names from process (pgrep)
char* buffer = new char[20];
FILE* pipe = popen("pgrep -f comfortable-swipe", "r");
// make sure pipe exists
if (pipe == NULL)
{
throw std::runtime_error("stop command failed");
}
// buffer what to kill
std::string kill = "kill";
// read until end of line
while (!std::feof(pipe))
{
if (std::fgets(buffer, 20, pipe) != NULL)
{
int pid = std::atoi(buffer);
if (pid != getpid())
{
kill += " ";
kill += std::to_string(pid);
}
}
}
// run "kill {pid1} {pid2}..."
(void) std::system(kill.data());
delete[] buffer;
// close the pipe
pclose(pipe);
}
}
#endif /* __COMFORTABLE_SWIPE__service_stop__ */