diff options
Diffstat (limited to 'protocols/Telegram/tdlib/td/example/java/td_jni.cpp')
-rw-r--r-- | protocols/Telegram/tdlib/td/example/java/td_jni.cpp | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/protocols/Telegram/tdlib/td/example/java/td_jni.cpp b/protocols/Telegram/tdlib/td/example/java/td_jni.cpp new file mode 100644 index 0000000000..b9ba74a402 --- /dev/null +++ b/protocols/Telegram/tdlib/td/example/java/td_jni.cpp @@ -0,0 +1,158 @@ +// +// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018 +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// +#include <td/telegram/Client.h> +#include <td/telegram/Log.h> +#include <td/telegram/td_api.h> + +#include <td/tl/tl_jni_object.h> + +#include <cstdint> +#include <cstdlib> +#include <string> +#include <utility> + +namespace td_jni { + +static td::td_api::object_ptr<td::td_api::Function> fetch_function(JNIEnv *env, jobject function) { + td::jni::reset_parse_error(); + auto result = td::td_api::Function::fetch(env, function); + if (td::jni::have_parse_error()) { + std::abort(); + } + return result; +} + +static td::Client *get_client(jlong client_id) { + return reinterpret_cast<td::Client *>(static_cast<std::uintptr_t>(client_id)); +} + +static jlong Client_createNativeClient(JNIEnv *env, jclass clazz) { + return static_cast<jlong>(reinterpret_cast<std::uintptr_t>(new td::Client())); +} + +static void Client_nativeClientSend(JNIEnv *env, jclass clazz, jlong client_id, jlong id, jobject function) { + get_client(client_id)->send({static_cast<std::uint64_t>(id), fetch_function(env, function)}); +} + +static jint Client_nativeClientReceive(JNIEnv *env, jclass clazz, jlong client_id, jlongArray ids, jobjectArray events, + jdouble timeout) { + auto client = get_client(client_id); + jsize events_size = env->GetArrayLength(ids); // ids and events size must be of equal size + jsize result_size = 0; + + auto response = client->receive(timeout); + while (response.object && result_size < events_size) { + jlong result_id = static_cast<jlong>(response.id); + env->SetLongArrayRegion(ids, result_size, 1, &result_id); + + jobject object; + response.object->store(env, object); + env->SetObjectArrayElement(events, result_size, object); + env->DeleteLocalRef(object); + + result_size++; + response = client->receive(0); + } + return result_size; +} + +static jobject Client_nativeClientExecute(JNIEnv *env, jclass clazz, jobject function) { + jobject result; + td::Client::execute({0, fetch_function(env, function)}).object->store(env, result); + return result; +} + +static void Client_destroyNativeClient(JNIEnv *env, jclass clazz, jlong client_id) { + delete get_client(client_id); +} + +static void Log_setVerbosityLevel(JNIEnv *env, jclass clazz, jint new_log_verbosity_level) { + td::Log::set_verbosity_level(static_cast<int>(new_log_verbosity_level)); +} + +static jboolean Log_setFilePath(JNIEnv *env, jclass clazz, jstring file_path) { + return td::Log::set_file_path(td::jni::from_jstring(env, file_path)) ? JNI_TRUE : JNI_FALSE; +} + +static void Log_setMaxFileSize(JNIEnv *env, jclass clazz, jlong max_file_size) { + td::Log::set_max_file_size(max_file_size); +} + +static jstring Object_toString(JNIEnv *env, jobject object) { + return td::jni::to_jstring(env, to_string(td::td_api::Object::fetch(env, object))); +} + +static jstring Function_toString(JNIEnv *env, jobject object) { + return td::jni::to_jstring(env, to_string(td::td_api::Function::fetch(env, object))); +} + +static constexpr jint JAVA_VERSION = JNI_VERSION_1_6; +static JavaVM *java_vm; +static jclass log_class; + +static void on_fatal_error(const char *error_message) { + auto env = td::jni::get_jni_env(java_vm, JAVA_VERSION); + jmethodID on_fatal_error_method = env->GetStaticMethodID(log_class, "onFatalError", "(Ljava/lang/String;)V"); + if (env && on_fatal_error_method) { + jstring error_str = td::jni::to_jstring(env.get(), error_message); + env->CallStaticVoidMethod(log_class, on_fatal_error_method, error_str); + if (error_str) { + env->DeleteLocalRef(error_str); + } + } +} + +static jint register_native(JavaVM *vm) { + JNIEnv *env; + if (vm->GetEnv(reinterpret_cast<void **>(&env), JAVA_VERSION) != JNI_OK) { + return -1; + } + + java_vm = vm; + + auto register_method = [env](jclass clazz, std::string name, std::string signature, auto function_ptr) { + td::jni::register_native_method(env, clazz, std::move(name), std::move(signature), + reinterpret_cast<void *>(function_ptr)); + }; + + auto client_class = td::jni::get_jclass(env, PACKAGE_NAME "/Client"); + log_class = td::jni::get_jclass(env, PACKAGE_NAME "/Log"); + auto object_class = td::jni::get_jclass(env, PACKAGE_NAME "/TdApi$Object"); + auto function_class = td::jni::get_jclass(env, PACKAGE_NAME "/TdApi$Function"); + +#define TD_OBJECT "L" PACKAGE_NAME "/TdApi$Object;" +#define TD_FUNCTION "L" PACKAGE_NAME "/TdApi$Function;" + register_method(client_class, "createNativeClient", "()J", Client_createNativeClient); + register_method(client_class, "nativeClientSend", "(JJ" TD_FUNCTION ")V", Client_nativeClientSend); + register_method(client_class, "nativeClientReceive", "(J[J[" TD_OBJECT "D)I", Client_nativeClientReceive); + register_method(client_class, "nativeClientExecute", "(" TD_FUNCTION ")" TD_OBJECT, Client_nativeClientExecute); + register_method(client_class, "destroyNativeClient", "(J)V", Client_destroyNativeClient); + + register_method(log_class, "setVerbosityLevel", "(I)V", Log_setVerbosityLevel); + register_method(log_class, "setFilePath", "(Ljava/lang/String;)Z", Log_setFilePath); + register_method(log_class, "setMaxFileSize", "(J)V", Log_setMaxFileSize); + + register_method(object_class, "toString", "()Ljava/lang/String;", Object_toString); + + register_method(function_class, "toString", "()Ljava/lang/String;", Function_toString); +#undef TD_FUNCTION +#undef TD_OBJECT + + td::jni::init_vars(env, PACKAGE_NAME); + td::td_api::Object::init_jni_vars(env, PACKAGE_NAME); + td::td_api::Function::init_jni_vars(env, PACKAGE_NAME); + td::Log::set_fatal_error_callback(on_fatal_error); + + return JAVA_VERSION; +} + +} // namespace td_jni + +JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved) { + static jint jni_version = td_jni::register_native(vm); // call_once + return jni_version; +} |