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70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/*
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* Copyright (c) 2021, Aziz Berkay Yesilyurt <abyesilyurt@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/QuickSort.h>
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#include <AK/Vector.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/ProcessStatisticsReader.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <LibRegex/Regex.h>
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ErrorOr<int> serenity_main(Main::Arguments args)
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{
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TRY(Core::System::pledge("stdio rpath"));
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TRY(Core::System::unveil("/sys/kernel/processes", "r"));
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TRY(Core::System::unveil("/etc/passwd", "r"));
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TRY(Core::System::unveil(nullptr, nullptr));
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auto pid_delimiter = "\n"sv;
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bool case_insensitive = false;
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bool invert_match = false;
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StringView pattern;
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Core::ArgsParser args_parser;
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args_parser.add_option(pid_delimiter, "Set the string used to delimit multiple pids", "delimiter", 'd', nullptr);
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args_parser.add_option(case_insensitive, "Make matches case-insensitive", nullptr, 'i');
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args_parser.add_option(invert_match, "Select non-matching lines", "invert-match", 'v');
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args_parser.add_positional_argument(pattern, "Process name to search for", "process-name");
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args_parser.parse(args);
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PosixOptions options {};
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if (case_insensitive)
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options |= PosixFlags::Insensitive;
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Regex<PosixExtended> re(pattern, options);
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if (re.parser_result.error != regex::Error::NoError) {
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return 1;
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}
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auto all_processes = TRY(Core::ProcessStatisticsReader::get_all());
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Vector<pid_t> matches;
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for (auto& it : all_processes.processes) {
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auto result = re.match(it.name, PosixFlags::Global);
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if (result.success ^ invert_match) {
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matches.append(it.pid);
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}
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}
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quick_sort(matches);
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auto displayed_at_least_one = false;
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for (auto& match : matches) {
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if (displayed_at_least_one)
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out("{}{}"sv, pid_delimiter, match);
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else
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out("{}"sv, match);
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displayed_at_least_one = true;
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}
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if (displayed_at_least_one)
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outln();
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return 0;
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}
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