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fdfda6dec2
Get rid of the weird old signature: - int StringType::to_int(bool& ok) const And replace it with sensible new signature: - Optional<int> StringType::to_int() const
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/HashMap.h>
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#include <AK/String.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 <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static int pid_of(const String& process_name, bool single_shot, bool omit_pid, pid_t pid)
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{
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bool displayed_at_least_one = false;
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auto processes = Core::ProcessStatisticsReader().get_all();
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for (auto& it : processes) {
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if (it.value.name == process_name) {
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if (!omit_pid || it.value.pid != pid) {
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printf("%d ", it.value.pid);
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displayed_at_least_one = true;
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if (single_shot)
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break;
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}
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}
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}
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if (displayed_at_least_one)
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printf("\n");
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return 0;
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}
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int main(int argc, char** argv)
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{
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bool single_shot = false;
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const char* omit_pid_value = nullptr;
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const char* process_name = nullptr;
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Core::ArgsParser args_parser;
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args_parser.add_option(single_shot, "Only return one pid", nullptr, 's');
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args_parser.add_option(omit_pid_value, "Omit the given PID, or the parent process if the special value %PPID is passed", nullptr, 'o', "pid");
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args_parser.add_positional_argument(process_name, "Process name to search for", "process-name");
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args_parser.parse(argc, argv);
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pid_t pid_to_omit = 0;
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if (omit_pid_value) {
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if (!strcmp(omit_pid_value, "%PPID")) {
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pid_to_omit = getppid();
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} else {
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auto number = StringView(omit_pid_value).to_uint();
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if (!number.has_value()) {
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fprintf(stderr, "Invalid value for -o\n");
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args_parser.print_usage(stderr, argv[0]);
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return 1;
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}
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pid_to_omit = number.value();
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}
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}
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return pid_of(process_name, single_shot, omit_pid_value != nullptr, pid_to_omit);
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}
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