ladybird/Userland/uname.cpp
2020-03-25 15:48:35 +01:00

93 lines
3.1 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <AK/Vector.h>
#include <stdio.h>
#include <sys/utsname.h>
#include <unistd.h>
int main(int argc, char** argv)
{
if (pledge("stdio", nullptr) < 0) {
perror("pledge");
return 1;
}
utsname uts;
int rc = uname(&uts);
if (rc < 0) {
perror("uname() failed");
return 0;
}
bool flag_s = false;
bool flag_n = false;
bool flag_r = false;
bool flag_m = false;
if (argc == 1) {
flag_s = true;
} else {
for (int i = 1; i < argc; ++i) {
if (argv[i][0] == '-') {
for (const char* o = &argv[i][1]; *o; ++o) {
switch (*o) {
case 's':
flag_s = true;
break;
case 'n':
flag_n = true;
break;
case 'r':
flag_r = true;
break;
case 'm':
flag_m = true;
break;
case 'a':
flag_s = flag_n = flag_r = flag_m = true;
break;
}
}
}
}
}
if (!flag_s && !flag_n && !flag_r && !flag_m)
flag_s = true;
Vector<String> parts;
if (flag_s)
parts.append(uts.sysname);
if (flag_n)
parts.append(uts.nodename);
if (flag_r)
parts.append(uts.release);
if (flag_m)
parts.append(uts.machine);
StringBuilder builder;
builder.join(' ', parts);
puts(builder.to_string().characters());
return 0;
}