1 /*
2   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
3 
4   This software is provided 'as-is', without any express or implied
5   warranty.  In no event will the authors be held liable for any damages
6   arising from the use of this software.
7 
8   Permission is granted to anyone to use this software for any purpose,
9   including commercial applications, and to alter it and redistribute it
10   freely.
11 */
12 
13 #include <stdio.h>
14 
15 #include "SDL.h"
16 
17 static size_t
widelen(char * data)18 widelen(char *data)
19 {
20     size_t len = 0;
21     Uint32 *p = (Uint32 *) data;
22     while (*p++) {
23         ++len;
24     }
25     return len;
26 }
27 
28 int
main(int argc,char * argv[])29 main(int argc, char *argv[])
30 {
31     const char *formats[] = {
32         "UTF8",
33         "UTF-8",
34         "UTF16BE",
35         "UTF-16BE",
36         "UTF16LE",
37         "UTF-16LE",
38         "UTF32BE",
39         "UTF-32BE",
40         "UTF32LE",
41         "UTF-32LE",
42         "UCS4",
43         "UCS-4",
44     };
45     char buffer[BUFSIZ];
46     char *ucs4;
47     char *test[2];
48     int i;
49     FILE *file;
50     int errors = 0;
51 
52     /* Enable standard application logging */
53     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
54 
55     if (!argv[1]) {
56         argv[1] = "utf8.txt";
57     }
58     file = fopen(argv[1], "rb");
59     if (!file) {
60         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to open %s\n", argv[1]);
61         return (1);
62     }
63 
64     while (fgets(buffer, sizeof(buffer), file)) {
65         /* Convert to UCS-4 */
66         size_t len;
67         ucs4 =
68             SDL_iconv_string("UCS-4", "UTF-8", buffer,
69                              SDL_strlen(buffer) + 1);
70         len = (widelen(ucs4) + 1) * 4;
71         for (i = 0; i < SDL_arraysize(formats); ++i) {
72             test[0] = SDL_iconv_string(formats[i], "UCS-4", ucs4, len);
73             test[1] = SDL_iconv_string("UCS-4", formats[i], test[0], len);
74             if (!test[1] || SDL_memcmp(test[1], ucs4, len) != 0) {
75                 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "FAIL: %s\n", formats[i]);
76                 ++errors;
77             }
78             SDL_free(test[0]);
79             SDL_free(test[1]);
80         }
81         test[0] = SDL_iconv_string("UTF-8", "UCS-4", ucs4, len);
82         SDL_free(ucs4);
83         fputs(test[0], stdout);
84         SDL_free(test[0]);
85     }
86     fclose(file);
87     return (errors ? errors + 1 : 0);
88 }
89