jcs.org
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/QuickSort.h>
28#include <AK/String.h>
29#include <AK/Vector.h>
30#include <stdio.h>
31#include <stdlib.h>
32#include <string.h>
33
34int main(int argc, char** argv)
35{
36 if (pledge("stdio", nullptr) > 0) {
37 perror("pledge");
38 return 1;
39 }
40
41 UNUSED_PARAM(argc);
42 UNUSED_PARAM(argv);
43
44 Vector<String> lines;
45
46 for (;;) {
47 char buffer[BUFSIZ];
48 auto* str = fgets(buffer, sizeof(buffer), stdin);
49 if (!str)
50 break;
51 lines.append(buffer);
52 }
53
54 quick_sort(lines, [](auto& a, auto& b) {
55 return strcmp(a.characters(), b.characters()) < 0;
56 });
57
58 for (auto& line : lines) {
59 fputs(line.characters(), stdout);
60 }
61
62 return 0;
63}