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Plugin.cpp
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250 lines (219 loc) · 6.45 KB
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#include <sstream>
#include <iostream>
#include <cstring>
#include <string>
#include <filesystem>
namespace fs = std::filesystem;
#ifdef _WIN32
#include <windows.h>
#endif
#include "Plugin.hpp"
#ifdef LUA_DEFINE
# undef LUA_DEFINE
#endif
#define LUA_DEFINE(name) Define(#name, [](lua_State *L) -> int
#ifdef _WIN32
typedef UINT(CALLBACK* JVMDLLFunction)(JavaVM**, void**, JavaVMInitArgs*);
#endif
Lua::LuaArgs_t CallLuaFunction(lua_State* ScriptVM, const char* LuaFunctionName, Lua::LuaArgs_t* Arguments) {
Lua::LuaArgs_t ReturnValues;
int ArgCount = lua_gettop(ScriptVM);
lua_getglobal(ScriptVM, LuaFunctionName);
int argc = 0;
if (Arguments) {
for (auto const& e : *Arguments) {
Lua::PushValueToLua(e, ScriptVM);
argc++;
}
}
int Status = lua_pcall(ScriptVM, argc, LUA_MULTRET, 0);
ArgCount = lua_gettop(ScriptVM) - ArgCount;
if (Status == LUA_OK) {
Lua::ParseArguments(ScriptVM, ReturnValues);
lua_pop(ScriptVM, ArgCount);
}
return ReturnValues;
}
int Plugin::CreateJava(std::string classPath)
{
int id = 0;
while (this->jenvs[id] != nullptr)
id++;
this->jenvs[id] = new JavaEnv(classPath);
return id + 1;
}
void Plugin::DestroyJava(int id)
{
this->jenvs[id - 1]->Destroy();
this->jenvs[id - 1] = nullptr;
}
JavaEnv* Plugin::GetJavaEnv(int id)
{
return this->jenvs[id - 1];
}
JavaEnv* Plugin::FindJavaEnv(JNIEnv* jenv) {
int i;
for (i = 0; i < 30; i++) {
if (this->jenvs[i] != nullptr) {
if (this->jenvs[i]->GetEnv() == jenv) {
return this->jenvs[i];
}
}
}
return nullptr;
}
void CallEvent(JNIEnv* jenv, jclass jcl, jstring event, jobjectArray argsList) {
JavaEnv* env = Plugin::Get()->FindJavaEnv(jenv);
if (env == nullptr) {
return;
}
(void)jcl;
const char* eventStr = jenv->GetStringUTFChars(event, nullptr);
Lua::LuaArgs_t args;
int argsCount = jenv->GetArrayLength(argsList);
for (jsize i = 0; i < argsCount; i++) {
jobject arrayElement = jenv->GetObjectArrayElement(argsList, i);
args.push_back(env->ToLuaValue(arrayElement));
}
Onset::Plugin::Get()->CallEvent(eventStr, &args);
jenv->ReleaseStringUTFChars(event, eventStr);
}
jobjectArray CallGlobal(JNIEnv* jenv, jclass jcl, jstring packageName, jstring functionName, jobjectArray args) {
JavaEnv* env = Plugin::Get()->FindJavaEnv(jenv);
if (env == nullptr) {
return NULL;
}
(void)jcl;
const char* packageNameStr = jenv->GetStringUTFChars(packageName, nullptr);
const char* functionNameStr = jenv->GetStringUTFChars(functionName, nullptr);
int argsLength = jenv->GetArrayLength(args);
Lua::LuaArgs_t luaArgs;
for (jsize i = 0; i < argsLength; i++) {
luaArgs.push_back(env->ToLuaValue(jenv->GetObjectArrayElement(args, i)));
}
auto luaReturns = CallLuaFunction(Plugin::Get()->GetPackageState(packageNameStr), functionNameStr, &luaArgs);
size_t returnsLength = luaReturns.size();
jclass objectCls = jenv->FindClass("Ljava/lang/Object;");
jobjectArray returns = jenv->NewObjectArray((jsize)returnsLength, objectCls, NULL);
for (jsize i = 0; i < (int)returnsLength; i++) {
jobject o = env->ToJavaObject(Plugin::Get()->GetPackageState(packageNameStr), luaReturns[i]);
jenv->SetObjectArrayElement(returns, i, o);
jenv->DeleteGlobalRef(o);
}
jenv->ReleaseStringUTFChars(packageName, packageNameStr);
jenv->ReleaseStringUTFChars(functionName, functionNameStr);
return returns;
}
Plugin::Plugin()
{
for (int i = 0; i < 30; i++)
this->jenvs[i] = nullptr;
LUA_DEFINE(CreateJava)
{
Lua::LuaArgs_t args;
Lua::ParseArguments(L, args);
int id = -1;
if (args.size() > 0) {
id = Plugin::Get()->CreateJava(args[0].GetValue<std::string>());
}
else {
std::string classPath = ".";
if (fs::exists("java")) {
classPath = "java";
for (const auto& entry : fs::directory_iterator("java")) {
if (!entry.is_directory()) {
std::string name = entry.path().string();
if (name.length() > 4) {
if (!name.substr(name.length() - 4, 4).compare(".jar")) {
#ifdef _WIN32
classPath += ";" + name;
#else
classPath += ":" + name;
#endif
}
}
}
}
}
id = Plugin::Get()->CreateJava(classPath);
}
if (id < 0) return 0;
return Lua::ReturnValues(L, id);
});
LUA_DEFINE(DestroyJava)
{
int id;
Lua::ParseArguments(L, id);
Plugin::Get()->DestroyJava(id);
return 1;
});
LUA_DEFINE(LinkJavaAdapter)
{
int id;
Lua::ParseArguments(L, id);
if (!Plugin::Get()->GetJavaEnv(id)) return 0;
JNIEnv* jenv = Plugin::Get()->GetJavaEnv(id)->GetEnv();
Lua::LuaArgs_t arg_list;
Lua::ParseArguments(L, arg_list);
int arg_size = static_cast<int>(arg_list.size());
if (arg_size < 2) return 0;
std::string className = arg_list[1].GetValue<std::string>();
jclass clazz = jenv->FindClass(className.c_str());
if (clazz == nullptr) return 0;
JNINativeMethod methods[] = {
{(char*)"callEvent", (char*)"(Ljava/lang/String;[Ljava/lang/Object;)V", (void*)CallEvent },
{(char*)"callGlobalFunction", (char*)"(Ljava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)[Ljava/lang/Object;", (void*)CallGlobal }
};
jenv->RegisterNatives(clazz, methods, 2);
Lua::ReturnValues(L, 1);
return 1;
});
LUA_DEFINE(CallJavaStaticMethod)
{
int id;
Lua::ParseArguments(L, id);
if (!Plugin::Get()->GetJavaEnv(id)) return 0;
JavaEnv* env = Plugin::Get()->GetJavaEnv(id);
Lua::LuaArgs_t arg_list;
Lua::ParseArguments(L, arg_list);
int arg_size = static_cast<int>(arg_list.size());
if (arg_size < 4) return 0;
lua_pop(L, arg_size);
std::string className = arg_list[1].GetValue<std::string>();
std::string methodName = arg_list[2].GetValue<std::string>();
std::string signature = arg_list[3].GetValue<std::string>();
jobject* params = new jobject[arg_size - 4];
for (int i = 4; i < arg_size; i++) {
auto const& value = arg_list[i];
params[i - 4] = env->ToJavaObject(L, value);
}
jobject returnValue = Plugin::Get()->GetJavaEnv(id)->CallStatic(className, methodName, signature, params, arg_size - 4);
delete[] params;
if (returnValue != NULL) {
Lua::LuaValue value = env->ToLuaValue(returnValue);
if (!(value == NULL)) {
switch (value.GetType())
{
case Lua::LuaValue::Type::STRING:
Lua::ReturnValues(L, value.GetValue<std::string>().c_str());
break;
case Lua::LuaValue::Type::INTEGER:
Lua::ReturnValues(L, value.GetValue<int>());
break;
case Lua::LuaValue::Type::BOOLEAN:
Lua::ReturnValues(L, value.GetValue<bool>());
break;
case Lua::LuaValue::Type::TABLE:
Lua::ReturnValues(L, value.GetValue<Lua::LuaTable_t>());
break;
default:
break;
}
}
}
else {
Lua::ReturnValues(L, 1);
}
return 1;
});
}