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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/String.h>
28#include <AK/QuickSort.h>
29#include <AK/Vector.h>
30#include <stdio.h>
31#include <stdlib.h>
32
33int main(int argc, char** argv)
34{
35 if (pledge("stdio", nullptr) > 0) {
36 perror("pledge");
37 return 1;
38 }
39
40 UNUSED_PARAM(argc);
41 UNUSED_PARAM(argv);
42
43 Vector<String> lines;
44
45 for (;;) {
46 char buffer[BUFSIZ];
47 auto* str = fgets(buffer, sizeof(buffer), stdin);
48 if (!str)
49 break;
50 lines.append(buffer);
51 }
52
53 quick_sort(lines.begin(), lines.end(), [](auto& a, auto& b) {
54 return strcmp(a.characters(), b.characters()) < 0;
55 });
56
57 for (auto& line : lines) {
58 fputs(line.characters(), stdout);
59 }
60
61 return 0;
62}