Android: Implement basic read-only cheats list

Source/Android/jni/Cheats/PatchCheat.cpp

@@ -0,0 +1,67 @@
+// Copyright 2021 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <string>
+#include <vector>
+
+#include <jni.h>
+
+#include "Common/FileUtil.h"
+#include "Common/IniFile.h"
+#include "Core/ConfigManager.h"
+#include "Core/PatchEngine.h"
+#include "jni/AndroidCommon/AndroidCommon.h"
+#include "jni/AndroidCommon/IDCache.h"
+
+static PatchEngine::Patch* GetPointer(JNIEnv* env, jobject obj)
+{
+  return reinterpret_cast<PatchEngine::Patch*>(
+      env->GetLongField(obj, IDCache::GetPatchCheatPointer()));
+}
+
+jobject PatchCheatToJava(JNIEnv* env, const PatchEngine::Patch& patch)
+{
+  return env->NewObject(IDCache::GetPatchCheatClass(), IDCache::GetPatchCheatConstructor(),
+                        reinterpret_cast<jlong>(new PatchEngine::Patch(patch)));
+}
+
+extern "C" {
+
+JNIEXPORT void JNICALL
+Java_org_dolphinemu_dolphinemu_features_cheats_model_PatchCheat_finalize(JNIEnv* env, jobject obj)
+{
+  delete GetPointer(env, obj);
+}
+
+JNIEXPORT jstring JNICALL
+Java_org_dolphinemu_dolphinemu_features_cheats_model_PatchCheat_getName(JNIEnv* env, jobject obj)
+{
+  return ToJString(env, GetPointer(env, obj)->name);
+}
+
+JNIEXPORT jobjectArray JNICALL
+Java_org_dolphinemu_dolphinemu_features_cheats_model_PatchCheat_loadCodes(JNIEnv* env, jclass,
+                                                                          jstring jGameID,
+                                                                          jint revision)
+{
+  const std::string game_id = GetJString(env, jGameID);
+  IniFile game_ini_local;
+
+  // We don't use LoadLocalGameIni() here because user cheat codes that are installed via the UI
+  // will always be stored in GS/${GAMEID}.ini
+  game_ini_local.Load(File::GetUserPath(D_GAMESETTINGS_IDX) + game_id + ".ini");
+  const IniFile game_ini_default = SConfig::LoadDefaultGameIni(game_id, revision);
+
+  std::vector<PatchEngine::Patch> patches;
+  PatchEngine::LoadPatchSection("OnFrame", &patches, game_ini_default, game_ini_local);
+
+  const jobjectArray array = env->NewObjectArray(static_cast<jsize>(patches.size()),
+                                                 IDCache::GetPatchCheatClass(), nullptr);
+
+  jsize i = 0;
+  for (const PatchEngine::Patch& patch : patches)
+    env->SetObjectArrayElement(array, i++, PatchCheatToJava(env, patch));
+
+  return array;
+}
+}