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[FILE BEGIN]
1/*
2  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
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 <SDL3/SDL.h>
14#include <SDL3/SDL_main.h>
15#include <SDL3/SDL_test.h>
16#include "testutils.h"
17
18static size_t
19widelen(char *data)
20{
21    size_t len = 0;
22    Uint32 *p = (Uint32 *)data;
23    while (*p++) {
24        ++len;
25    }
26    return len;
27}
28
29static char *get_next_line(Uint8 **fdataptr, size_t *fdatalen)
30{
31    char *result = (char *) *fdataptr;
32    Uint8 *ptr = *fdataptr;
33    size_t len = *fdatalen;
34
35    if (len == 0) {
36        return NULL;
37    }
38
39    while (len > 0) {
40        if (*ptr == '\r') {
41            *ptr = '\0';
42        } else if (*ptr == '\n') {
43            *ptr = '\0';
44            ptr++;
45            len--;
46            break;
47        }
48        ptr++;
49        len--;
50    }
51
52    *fdataptr = ptr;
53    *fdatalen = len;
54    return result;
55}
56
57int main(int argc, char *argv[])
58{
59    const char *formats[] = {
60        "UTF8",
61        "UTF-8",
62        "UTF16BE",
63        "UTF-16BE",
64        "UTF16LE",
65        "UTF-16LE",
66        "UTF32BE",
67        "UTF-32BE",
68        "UTF32LE",
69        "UTF-32LE",
70        "UCS4",
71        "UCS-4",
72    };
73
74    char *fname = NULL;
75    char *ucs4;
76    char *test[2];
77    int i;
78    int errors = 0;
79    SDLTest_CommonState *state;
80    Uint8 *fdata = NULL;
81    Uint8 *fdataptr = NULL;
82    char *line = NULL;
83    size_t fdatalen = 0;
84
85    /* Initialize test framework */
86    state = SDLTest_CommonCreateState(argv, 0);
87    if (!state) {
88        return 1;
89    }
90
91    /* Parse commandline */
92    for (i = 1; i < argc;) {
93        int consumed;
94
95        consumed = SDLTest_CommonArg(state, i);
96        if (!consumed) {
97            if (!fname) {
98                fname = argv[i];
99                consumed = 1;
100            }
101        }
102        if (consumed <= 0) {
103            static const char *options[] = { "[utf8.txt]", NULL };
104            SDLTest_CommonLogUsage(state, argv[0], options);
105            return 1;
106        }
107
108        i += consumed;
109    }
110
111    fname = GetResourceFilename(fname, "utf8.txt");
112    fdata = (Uint8 *) (fname ? SDL_LoadFile(fname, &fdatalen) : NULL);
113    if (!fdata) {
114        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to load %s", fname);
115        return 1;
116    }
117
118    fdataptr = fdata;
119    while ((line = get_next_line(&fdataptr, &fdatalen)) != NULL) {
120        /* Convert to UCS-4 */
121        size_t len;
122        ucs4 = SDL_iconv_string("UCS-4", "UTF-8", line, SDL_strlen(line) + 1);
123        len = (widelen(ucs4) + 1) * 4;
124
125        for (i = 0; i < SDL_arraysize(formats); ++i) {
126            test[0] = SDL_iconv_string(formats[i], "UCS-4", ucs4, len);
127            test[1] = SDL_iconv_string("UCS-4", formats[i], test[0], len);
128            if (!test[1] || SDL_memcmp(test[1], ucs4, len) != 0) {
129                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "FAIL: %s", formats[i]);
130                ++errors;
131            }
132            SDL_free(test[0]);
133            SDL_free(test[1]);
134        }
135        test[0] = SDL_iconv_string("UTF-8", "UCS-4", ucs4, len);
136        SDL_free(ucs4);
137        SDL_Log("%s", test[0]);
138        SDL_free(test[0]);
139    }
140    SDL_free(fdata);
141    SDL_free(fname);
142
143    SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Total errors: %d", errors);
144    SDL_Quit();
145    SDLTest_CommonDestroyState(state);
146    return errors ? errors + 1 : 0;
147}
148
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