serenity/Userland/Utilities/echo.cpp

/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibCore/ArgsParser.h>
#include <stdio.h>
#include <unistd.h>

int main(int argc, char** argv)
{
    if (pledge("stdio", nullptr) < 0) {
        perror("pledge");
        return 1;
    }

    Vector<const char*> values;
    bool no_trailing_newline = false;

    Core::ArgsParser args_parser;
    args_parser.add_option(no_trailing_newline, "Do not output a trailing newline", nullptr, 'n');
    args_parser.add_positional_argument(values, "Values to print out", "string", Core::ArgsParser::Required::No);
    args_parser.parse(argc, argv);

    for (size_t i = 0; i < values.size(); ++i) {
        fputs(values[i], stdout);
        if (i != values.size() - 1)
            fputc(' ', stdout);
    }
    if (!no_trailing_newline)
        printf("\n");
    return 0;
}