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// Copyright 2023 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#ifdef ANDROID
#include "common/android_storage.h"
namespace AndroidStorage {
JNIEnv* GetEnvForThread() {
thread_local static struct OwnedEnv {
OwnedEnv() {
status = g_jvm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6);
if (status == JNI_EDETACHED)
g_jvm->AttachCurrentThread(&env, nullptr);
}
~OwnedEnv() {
if (status == JNI_EDETACHED)
g_jvm->DetachCurrentThread();
}
int status;
JNIEnv* env = nullptr;
} owned;
return owned.env;
}
AndroidOpenMode ParseOpenmode(const std::string_view openmode) {
AndroidOpenMode android_open_mode = AndroidOpenMode::NEVER;
const char* mode = openmode.data();
int o = 0;
switch (*mode++) {
case 'r':
android_open_mode = AndroidStorage::AndroidOpenMode::READ;
break;
case 'w':
android_open_mode = AndroidStorage::AndroidOpenMode::WRITE;
o = O_TRUNC;
break;
case 'a':
android_open_mode = AndroidStorage::AndroidOpenMode::WRITE;
o = O_APPEND;
break;
}
// [rwa]\+ or [rwa]b\+ means read and write
if (*mode == '+' || (*mode == 'b' && mode[1] == '+')) {
android_open_mode = AndroidStorage::AndroidOpenMode::READ_WRITE;
}
return android_open_mode | o;
}
void InitJNI(JNIEnv* env, jclass clazz) {
env->GetJavaVM(&g_jvm);
native_library = clazz;
#define FR(FunctionName, ReturnValue, JMethodID, Caller, JMethodName, Signature) \
F(JMethodID, JMethodName, Signature)
#define FS(FunctionName, ReturnValue, Parameters, JMethodID, JMethodName, Signature) \
F(JMethodID, JMethodName, Signature)
#define F(JMethodID, JMethodName, Signature) \
JMethodID = env->GetStaticMethodID(native_library, JMethodName, Signature);
ANDROID_SINGLE_PATH_DETERMINE_FUNCTIONS(FR)
ANDROID_STORAGE_FUNCTIONS(FS)
#undef F
#undef FS
#undef FR
}
void CleanupJNI() {
#define FR(FunctionName, ReturnValue, JMethodID, Caller, JMethodName, Signature) F(JMethodID)
#define FS(FunctionName, ReturnValue, Parameters, JMethodID, JMethodName, Signature) F(JMethodID)
#define F(JMethodID) JMethodID = nullptr;
ANDROID_SINGLE_PATH_DETERMINE_FUNCTIONS(FR)
ANDROID_STORAGE_FUNCTIONS(FS)
#undef F
#undef FS
#undef FR
}
bool CreateFile(const std::string& directory, const std::string& filename) {
if (create_file == nullptr)
return false;
auto env = GetEnvForThread();
jstring j_directory = env->NewStringUTF(directory.c_str());
jstring j_filename = env->NewStringUTF(filename.c_str());
return env->CallStaticBooleanMethod(native_library, create_file, j_directory, j_filename);
}
bool CreateDir(const std::string& directory, const std::string& filename) {
if (create_dir == nullptr)
return false;
auto env = GetEnvForThread();
jstring j_directory = env->NewStringUTF(directory.c_str());
jstring j_directory_name = env->NewStringUTF(filename.c_str());
return env->CallStaticBooleanMethod(native_library, create_dir, j_directory, j_directory_name);
}
int OpenContentUri(const std::string& filepath, AndroidOpenMode openmode) {
if (open_content_uri == nullptr)
return -1;
const char* mode = "";
switch (openmode) {
case AndroidOpenMode::READ:
mode = "r";
break;
case AndroidOpenMode::WRITE:
mode = "w";
break;
case AndroidOpenMode::READ_WRITE:
mode = "rw";
break;
case AndroidOpenMode::WRITE_TRUNCATE:
mode = "wt";
break;
case AndroidOpenMode::WRITE_APPEND:
mode = "wa";
break;
case AndroidOpenMode::READ_WRITE_APPEND:
mode = "rwa";
break;
case AndroidOpenMode::READ_WRITE_TRUNCATE:
mode = "rwt";
break;
case AndroidOpenMode::NEVER:
return -1;
}
auto env = GetEnvForThread();
jstring j_filepath = env->NewStringUTF(filepath.c_str());
jstring j_mode = env->NewStringUTF(mode);
return env->CallStaticIntMethod(native_library, open_content_uri, j_filepath, j_mode);
}
std::vector<std::string> GetFilesName(const std::string& filepath) {
auto vector = std::vector<std::string>();
if (get_files_name == nullptr)
return vector;
auto env = GetEnvForThread();
jstring j_filepath = env->NewStringUTF(filepath.c_str());
auto j_object =
(jobjectArray)env->CallStaticObjectMethod(native_library, get_files_name, j_filepath);
const jsize j_size = env->GetArrayLength(j_object);
vector.reserve(j_size);
for (int i = 0; i < j_size; i++) {
auto string = (jstring)(env->GetObjectArrayElement(j_object, i));
vector.emplace_back(env->GetStringUTFChars(string, nullptr));
}
return vector;
}
bool CopyFile(const std::string& source, const std::string& destination_path,
const std::string& destination_filename) {
if (copy_file == nullptr)
return false;
auto env = GetEnvForThread();
jstring j_source_path = env->NewStringUTF(source.c_str());
jstring j_destination_path = env->NewStringUTF(destination_path.c_str());
jstring j_destination_filename = env->NewStringUTF(destination_filename.c_str());
return env->CallStaticBooleanMethod(native_library, copy_file, j_source_path,
j_destination_path, j_destination_filename);
}
bool RenameFile(const std::string& source, const std::string& filename) {
if (rename_file == nullptr)
return false;
auto env = GetEnvForThread();
jstring j_source_path = env->NewStringUTF(source.c_str());
jstring j_destination_path = env->NewStringUTF(filename.c_str());
return env->CallStaticBooleanMethod(native_library, rename_file, j_source_path,
j_destination_path);
}
#define FR(FunctionName, ReturnValue, JMethodID, Caller, JMethodName, Signature) \
F(FunctionName, ReturnValue, JMethodID, Caller)
#define F(FunctionName, ReturnValue, JMethodID, Caller) \
ReturnValue FunctionName(const std::string& filepath) { \
if (JMethodID == nullptr) { \
return 0; \
} \
auto env = GetEnvForThread(); \
jstring j_filepath = env->NewStringUTF(filepath.c_str()); \
return env->Caller(native_library, JMethodID, j_filepath); \
}
ANDROID_SINGLE_PATH_DETERMINE_FUNCTIONS(FR)
#undef F
#undef FR
} // namespace AndroidStorage
#endif
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