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Annotation of solidite/utils/uname.cpp, revision 1.1

1.1     ! user        1: /* Copyright (c) 2026 The Solidite Developers
        !             2:  *
        !             3:  * This program is free software: you can redistribute it and/or modify it under
        !             4:  * the terms of the GNU Affero General Public License as published by the Free
        !             5:  * Software Foundation, either version 3 of the License, or (at your option)
        !             6:  * any later version.
        !             7:  *
        !             8:  * This program is distributed in the hope that it will be useful, but WITHOUT
        !             9:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
        !            10:  * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
        !            11:  * details.
        !            12:  *
        !            13:  * You should have received a copy of the GNU Affero General Public License
        !            14:  * along with this program. If not, see <https://www.gnu.org/licenses/>. */
        !            15: 
        !            16: #include <bitset>
        !            17: #include <iostream>
        !            18: #include <locale>
        !            19: #include <string>
        !            20: 
        !            21: #include <cstddef>
        !            22: #include <cstdint>
        !            23: #include <cstring>
        !            24: 
        !            25: #include <sys/utsname.h>
        !            26: 
        !            27: int main(int argc, char* argv[]) {
        !            28:   // locale work
        !            29:   std::locale::global(std::locale(""));
        !            30:   std::cerr.imbue(std::locale()); 
        !            31:   
        !            32:   std::bitset<6> options = 0b000000;
        !            33:   /* options[0]=print system hardware type (-m)
        !            34:    * options[1]=write node (-n)
        !            35:    * options[2]=write OS release level (-r)
        !            36:    * options[3]=write the name of the operating system (-s)
        !            37:    * options[4]=write OS version level of the OS release (-v)
        !            38:    * options[5]=error occurred, return code 1*/
        !            39:   
        !            40:   for (int i = 1; i < argc; ++i) {
        !            41:     if (argv[i][0] != '-')
        !            42:       continue;
        !            43:     for (std::size_t j = 1; j < strlen(argv[i]); ++j) {
        !            44:       switch (argv[i][j]) {
        !            45:         case 'a':
        !            46:           for (int i = 0; i < 5; ++i)
        !            47:             options.set(i);
        !            48:           break;
        !            49:         case 'm':
        !            50:           options.set(0);
        !            51:           break;
        !            52:         case 'n':
        !            53:           options.set(1);
        !            54:           break;
        !            55:         case 'r':
        !            56:           options.set(2);
        !            57:           break;
        !            58:         case 's':
        !            59:           options.set(3);
        !            60:           break;
        !            61:         case 'v':
        !            62:           options.set(4);
        !            63:           break;
        !            64:         default:
        !            65:           std::cerr << "bad option\n";
        !            66:          options.set(5);
        !            67:           break;
        !            68:       }
        !            69:     }
        !            70:   }
        !            71: 
        !            72:   if (options == 0)
        !            73:     options.set(3);
        !            74: 
        !            75:   struct utsname uts_name;
        !            76:   if (uname(&uts_name) != 0) {
        !            77:     std::cerr << "getting uname failed\n";
        !            78:     return 1;
        !            79:   }
        !            80: 
        !            81:   std::string output_buffer {};
        !            82:   if (options.test(0) == 1) {
        !            83:     output_buffer+=uts_name.machine;
        !            84:     output_buffer+=' ';
        !            85:   }
        !            86:   if (options.test(1) == 1) {
        !            87:     output_buffer+=uts_name.nodename;
        !            88:     output_buffer+=' ';
        !            89:   }
        !            90:   if (options.test(2) == 1) {
        !            91:     output_buffer+=uts_name.release;
        !            92:     output_buffer+=' ';
        !            93:   }
        !            94:   if (options.test(3) == 1) {
        !            95:     output_buffer+=uts_name.sysname;
        !            96:     output_buffer+=' ';
        !            97:   }
        !            98:   if (options.test(4) == 1) {
        !            99:     output_buffer+=uts_name.version;
        !           100:     output_buffer+=' ';
        !           101:   }
        !           102:   output_buffer.erase(output_buffer.length() - 1, 1);
        !           103:   std::cout << output_buffer + '\n';
        !           104:   return options.test(5);
        !           105: }