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Annotation of solidite/utils/echo.cpp, revision 1.1.1.1

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: 
                     17: #include <iostream>
                     18: #include <string>
                     19: 
                     20: #include <cstdint>
                     21: 
                     22: int main(int argc, char* argv[]) {
                     23:   std::string to_stdout;
                     24:   for (int i = 1; i < argc; ++i) {
                     25:     if (i != argc - 1) {
                     26:       to_stdout += std::string(argv[i]) + ' ';
                     27:       continue;
                     28:     }
                     29:     to_stdout += std::string(argv[i]) + '\n';
                     30:   }
                     31: 
                     32:   char escape;
                     33:   for (size_t i = 0; i < to_stdout.length(); ++i) {
                     34:     if (to_stdout[i] == '\\') {
                     35:       escape = to_stdout[i+1];
                     36:       // get the escape character before erasal
                     37:       to_stdout.erase(i, 2);
                     38:       switch (escape) {
                     39:         case 'a':
                     40:           to_stdout.insert(i, "\a");
                     41:           break;
                     42:         case 'b':
                     43:           to_stdout.insert(i, "\b");
                     44:           break;
                     45:         case 'c':
                     46:           to_stdout.erase(to_stdout.length() - 1, 1);
                     47:           break;
                     48:         case 'n':
                     49:           to_stdout.insert(i, "\n");
                     50:           break;
                     51:         case 'r':
                     52:           to_stdout.insert(i, "\r");
                     53:           break;
                     54:         case 't':
                     55:           to_stdout.insert(i, "\t");
                     56:           break;
                     57:         case 'v':
                     58:           to_stdout.insert(i, "\v");
                     59:           break;
                     60:         case '\\':
                     61:           to_stdout.insert(i, "\\");
                     62:           break;
                     63:         default:
                     64:           if (i == to_stdout.length())
                     65:             to_stdout.insert(i, "\\\n");
                     66:           break;
                     67:       }
                     68:     }
                     69:   }
                     70: 
                     71:   std::cout << to_stdout;
                     72: }