1#include "os.h"
 2#include "common/settings.h"
 3
 4void ffDetectOSImpl(FFOSResult* os) {
 5    ffStrbufSetStatic(&os->name, "Android");
 6
 7    ffStrbufSetStatic(&os->id, "android");
 8
 9    ffSettingsGetAndroidProperty("ro.build.version.release", &os->version);
10
11    ffStrbufSet(&os->versionID, &os->version);
12
13    unsigned major = 0;
14    for (const char* p = os->version.chars; *p >= '0' && *p <= '9'; ++p) {
15        major = major * 10 + (unsigned) (*p - '0');
16    }
17
18    const char* codename = NULL;
19    // https://en.wikipedia.org/wiki/Android_version_history
20    // Android 5 is the oldest version supported by Termux
21    // clang-format off
22    switch (major) {
23        case 17: codename = "Cinnamon Bun"; break;
24        case 16: codename = "Baklava"; break;
25        case 15: codename = "Vanilla Ice Cream"; break;
26        case 14: codename = "Upside Down Cake"; break;
27        case 13: codename = "Tiramisu"; break;
28        case 12: codename = "Snow Cone"; break;
29        case 11: codename = "Red Velvet Cake"; break;
30        case 10: codename = "Quince Tart"; break;
31        case 9: codename = "Pie"; break;
32        case 8: codename = "Oreo"; break;
33        case 7: codename = "Nougat"; break;
34        case 6: codename = "Marshmallow"; break;
35        case 5: codename = "Lollipop"; break;
36    }
37    // clang-format on
38
39    if (codename) {
40        ffStrbufSetStatic(&os->codename, codename);
41    } else {
42        ffSettingsGetAndroidProperty("ro.build.version.codename", &os->codename);
43    }
44
45    ffSettingsGetAndroidProperty("ro.build.id", &os->buildID);
46}