| 50 | #endif |
| 51 | |
| 52 | std::string GetEnvironment(const char* variable) { |
| 53 | #if !defined(__ANDROID__) && !defined(_WIN32) |
| 54 | const char* output = getenv(variable); |
| 55 | return output == NULL ? "" : output; |
| 56 | #elif defined(_WIN32) |
| 57 | int size = GetEnvironmentVariable(variable, NULL, 0); |
| 58 | if (size == 0) { |
| 59 | return ""; |
| 60 | } |
| 61 | char* buffer = new char[size]; |
| 62 | GetEnvironmentVariable(variable, buffer, size); |
| 63 | std::string output = buffer; |
| 64 | delete[] buffer; |
| 65 | return output; |
| 66 | #elif defined(__ANDROID__) |
| 67 | std::string var = variable; |
| 68 | |
| 69 | if (std::string_view{variable} != kForceDefaultCallbackKey) { |
| 70 | // kForceDefaultCallbackKey is a special key that needs to be recognized for backwards compatibilty. |
| 71 | // For all other strings, prefix the requested variable with "debug.vvl." so that desktop environment settings can be used |
| 72 | // on Android. |
| 73 | var = "debug.vvl." + var; |
| 74 | } |
| 75 | |
| 76 | const prop_info* prop_info = __system_property_find(var.data()); |
| 77 | |
| 78 | if (prop_info) { |
| 79 | std::string property; |
| 80 | __system_property_read_callback(prop_info, PropCallback, &property); |
| 81 | return property; |
| 82 | } else { |
| 83 | return ""; |
| 84 | } |
| 85 | #else |
| 86 | return ""; |
| 87 | #endif |
| 88 | } |
| 89 | |
| 90 | void SetEnvironment(const char* variable, const char* value) { |
| 91 | #if !defined(__ANDROID__) && !defined(_WIN32) |