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OS (Android): optimises code

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This commit is contained in:
Carter Li
2026-08-11 13:52:59 +08:00
parent a0452b8323
commit 51cfd4b5ed
1 changed files with 29 additions and 47 deletions
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src/detection/os/os_android.c
+29 -47
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@@ -1,43 +1,6 @@
#include "os.h"
#include "common/settings.h"
// https://en.wikipedia.org/wiki/Android_version_history
static const struct {
const char* version;
const char* codename;
} androidCodenames[] = {
{ "17", "Cinnamon Bun" },
{ "16", "Baklava" },
{ "15", "Vanilla Ice Cream" },
{ "14", "Upside Down Cake" },
{ "13", "Tiramisu" },
{ "12", "Snow Cone" },
{ "11", "Red Velvet Cake" },
{ "10", "Quince Tart" },
{ "9", "Pie" },
{ "8.1", "Oreo" },
{ "8.0", "Oreo" },
{ "7.1", "Nougat" },
{ "7.0", "Nougat" },
{ "6.0", "Marshmallow" },
{ "5.1", "Lollipop" },
{ "5.0", "Lollipop" },
{ "4.4", "KitKat" },
{ "4.3", "Jelly Bean" },
{ "4.2", "Jelly Bean" },
{ "4.1", "Jelly Bean" },
{ "4.0", "Ice Cream Sandwich" },
{ "3.2", "Honeycomb" },
{ "3.1", "Honeycomb" },
{ "3.0", "Honeycomb" },
{ "2.3", "Gingerbread" },
{ "2.2", "Froyo" },
{ "2.1", "Eclair" },
{ "2.0", "Eclair" },
{ "1.6", "Donut" },
{ "1.5", "Cupcake" },
};
void ffDetectOSImpl(FFOSResult* os) {
ffStrbufSetStatic(&os->name, "Android");
@@ -47,17 +10,36 @@ void ffDetectOSImpl(FFOSResult* os) {
ffStrbufSet(&os->versionID, &os->version);
ffSettingsGetAndroidProperty("ro.build.version.codename", &os->codename);
unsigned major = 0;
for (const char* p = os->version.chars; *p >= '0' && *p <= '9'; ++p) {
major = major * 10 + (unsigned) (*p - '0');
}
// On release builds, ro.build.version.codename reports "REL" instead of the real codename.
// In that case, look up the codename from the version table.
if (ffStrbufEqualS(&os->codename, "REL")) {
for (size_t i = 0; i < ARRAY_SIZE(androidCodenames); i++) {
if (ffStrbufEqualS(&os->version, androidCodenames[i].version)) {
ffStrbufSetStatic(&os->codename, androidCodenames[i].codename);
break;
}
}
const char* codename = NULL;
// https://en.wikipedia.org/wiki/Android_version_history
// Android 5 is the oldest version supported by Termux
// clang-format off
switch (major) {
case 17: codename = "Cinnamon Bun"; break;
case 16: codename = "Baklava"; break;
case 15: codename = "Vanilla Ice Cream"; break;
case 14: codename = "Upside Down Cake"; break;
case 13: codename = "Tiramisu"; break;
case 12: codename = "Snow Cone"; break;
case 11: codename = "Red Velvet Cake"; break;
case 10: codename = "Quince Tart"; break;
case 9: codename = "Pie"; break;
case 8: codename = "Oreo"; break;
case 7: codename = "Nougat"; break;
case 6: codename = "Marshmallow"; break;
case 5: codename = "Lollipop"; break;
}
// clang-format on
if (codename) {
ffStrbufSetStatic(&os->codename, codename);
} else {
ffSettingsGetAndroidProperty("ro.build.version.codename", &os->codename);
}
ffSettingsGetAndroidProperty("ro.build.id", &os->buildID);