1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21
22#include "../../SDL_internal.h"
23#include "../SDL_syslocale.h"
24
25#import <Foundation/Foundation.h>
26
27void
28SDL_SYS_GetPreferredLocales(char *buf, size_t buflen)
29{ @autoreleasepool {
30    NSArray *languages = NSLocale.preferredLanguages;
31    size_t numlangs = 0;
32    size_t i;
33
34    numlangs = (size_t) [languages count];
35
36    for (i = 0; i < numlangs; i++) {
37        NSString *nsstr = [languages objectAtIndex:i];
38        size_t len;
39        char *ptr;
40
41        if (nsstr == nil) {
42            break;
43        }
44
45        [nsstr getCString:buf maxLength:buflen encoding:NSASCIIStringEncoding];
46        len = SDL_strlen(buf);
47
48        // convert '-' to '_'...
49        //  These are always full lang-COUNTRY, so we search from the back,
50        //  so things like zh-Hant-CN find the right '-' to convert.
51        if ((ptr = SDL_strrchr(buf, '-')) != NULL) {
52            *ptr = '_';
53        }
54
55        if (buflen <= len) {
56            *buf = '\0';  // drop this one and stop, we can't fit anymore.
57            break;
58        }
59
60        buf += len;
61        buflen -= len;
62
63        if (i < (numlangs - 1)) {
64            if (buflen <= 1) {
65                break;  // out of room, stop looking.
66            }
67            buf[0] = ',';  // add a comma between entries.
68            buf[1] = '\0';
69            buf++;
70            buflen--;
71        }
72    }
73}}
74
75/* vi: set ts=4 sw=4 expandtab: */
76
77