61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
#include <os/ArgumentParser.h>
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#include <stdio.h>
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#include <sys/utsname.h>
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#define OPERATING_SYSTEM "Luna"
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void print_sequenced(const char* string)
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{
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static bool first { true };
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if (!first) { putchar(' '); }
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first = false;
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fputs(string, stdout);
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}
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Result<int> luna_main(int argc, char** argv)
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{
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bool all { false };
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bool kernel_name { false };
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bool node_name { false };
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bool kernel_release { false };
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bool kernel_version { false };
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bool machine { false };
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bool operating_system { false };
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os::ArgumentParser parser;
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parser.add_description("Print system information. If given no options, defaults to -s."_sv);
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parser.add_system_program_info("uname"_sv);
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parser.add_switch_argument(all, 'a', "all"_sv, "print all information"_sv);
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parser.add_switch_argument(kernel_name, 's', "kernel-name"_sv, "print the kernel name"_sv);
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parser.add_switch_argument(node_name, 'n', "nodename"_sv, "print the network hostname"_sv);
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parser.add_switch_argument(kernel_release, 'r', "kernel-release"_sv, "print the kernel release"_sv);
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parser.add_switch_argument(kernel_version, 'v', "kernel-version"_sv, "print the kernel version"_sv);
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parser.add_switch_argument(machine, 'm', "machine"_sv, "print the machine name"_sv);
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parser.add_switch_argument(operating_system, 'o', "operating-system"_sv, "print the operating system"_sv);
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parser.parse(argc, argv);
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// If no options are given, default is -s.
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if (!all && !kernel_name && !node_name && !kernel_release && !kernel_version && !machine && !operating_system)
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kernel_name = true;
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if (all) kernel_name = node_name = kernel_release = kernel_version = machine = operating_system = true;
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struct utsname info;
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if (uname(&info) < 0)
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{
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perror("uname");
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return 1;
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}
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if (kernel_name) print_sequenced(info.sysname);
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if (node_name) print_sequenced(info.nodename);
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if (kernel_release) print_sequenced(info.release);
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if (kernel_version) print_sequenced(info.version);
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if (machine) print_sequenced(info.machine);
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if (operating_system) print_sequenced(OPERATING_SYSTEM);
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putchar('\n');
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return 0;
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}
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