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#include <unistd.h>
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <LibCore/CProcessStatisticsReader.h>
#include <LibCore/CArgsParser.h>
#include <AK/AKString.h>
#include <AK/Vector.h>
#include <AK/HashMap.h>
static int pid_of(const String& process_name, bool single_shot, bool omit_pid, pid_t pid)
{
bool displayed_at_least_one = false;
HashMap<pid_t, CProcessStatistics> processes = CProcessStatisticsReader().get_map();
for (auto& it : processes) {
if (it.value.name == process_name) {
if (!omit_pid || (omit_pid && it.value.pid != pid)) {
printf("%d ", it.value.pid);
displayed_at_least_one = true;
if (single_shot)
break;
}
}
}
if (displayed_at_least_one)
printf("\n");
return 0;
}
int main(int argc, char** argv)
{
CArgsParser args_parser("pidof");
args_parser.add_arg("s", "Single shot - this instructs the program to only return one pid");
args_parser.add_arg("o", "pid", "Tells pidof to omit processes with that pid. The special pid %PPID can be used to name the parent process of the pidof program.");
CArgsParserResult args = args_parser.parse(argc, (const char**)argv);
bool s_arg = args.is_present("s");
bool o_arg = args.is_present("o");
pid_t pid = 0;
if (o_arg) {
bool ok = false;
String pid_str = args.get("o");
if (pid_str == "%PPID")
pid = getppid();
else
pid = pid_str.to_uint(ok);
}
// We should have one single value : the process name
Vector<String> values = args.get_single_values();
if (values.size() == 0) {
args_parser.print_usage();
return 0;
}
return pid_of(values[0], s_arg, o_arg, pid);
}
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