1#include "os.h"
 2#include <OS.h>
 3#include <image.h>
 4#include <inttypes.h>
 5
 6void ffDetectOSImpl(FFOSResult* os) {
 7    ffStrbufSetStatic(&os->name, "Haiku");
 8
 9    ffStrbufSetStatic(&os->id, "haiku");
10
11    image_info image;
12    int32 cookie = 0;
13    while (get_next_image_info(B_SYSTEM_TEAM, &cookie, &image) == B_OK) {
14        int32 ver = image.api_version;
15        if (ver == 0) {
16            continue;
17        }
18
19        // https://github.com/haiku/haiku/blob/e63683b2fb337d2034059a7e053c170eaf978142/headers/os/BeBuild.h#L36
20        if (ver < B_HAIKU_VERSION_1_ALPHA_1) {
21            switch (ver) {
22                case B_HAIKU_VERSION_BEOS:
23                    ffStrbufSetStatic(&os->version, "BEOS");
24                    break;
25                case B_HAIKU_VERSION_BONE:
26                    ffStrbufSetStatic(&os->version, "BONE");
27                    break;
28                case B_HAIKU_VERSION_DANO:
29                    ffStrbufSetStatic(&os->version, "DANO");
30                    break;
31            }
32        } else {
33            int32 relVer = ver / 0x10000;
34            ver %= 0x10000;
35            if (ver == 0) {
36                ffStrbufSetF(&os->version, "R%" PRIi32, relVer);
37            } else {
38                relVer++;
39
40                bool isPre = !!(ver & 1);
41                if (ver < B_HAIKU_VERSION_1_PRE_BETA_1) {
42                    int32 alphaVer = ver / 0x100;
43                    if (isPre) {
44                        ffStrbufSetF(&os->version, "R%" PRId32 "A%" PRIi32 "-", relVer, alphaVer + 1);
45                    } else {
46                        ffStrbufSetF(&os->version, "R%" PRIi32 "A%" PRIi32, relVer, alphaVer);
47                    }
48                } else if (ver < 0x00010000 /* B_HAIKU_VERSION_1 */) {
49                    int32 betaVer = (ver - B_HAIKU_VERSION_1_ALPHA_4) / 0x100;
50                    if (isPre) {
51                        ffStrbufSetF(&os->version, "R%" PRIi32 "B%" PRIi32 "-", relVer, betaVer + 1);
52                    } else {
53                        ffStrbufSetF(&os->version, "R%" PRIi32 "B%" PRIi32, relVer, betaVer);
54                    }
55                }
56            }
57        }
58    }
59
60    if (!os->version.length) {
61        system_info sys;
62        if (get_system_info(&sys) == B_OK) {
63            ffStrbufAppendF(&os->version, "R%" PRIx64, sys.kernel_version);
64        }
65    }
66}