Merge pull request #64421 from m4gr3d/investigate_read_write_access_loss_main

Fix issue preventing the Android Editor from displaying the project content

8 files changed, 38 insertions, 10 deletions

diff --git a/platform/android/export/export_plugin.cpp b/platform/android/export/export_plugin.cpp
index 34086add2a..685b1f01af 100644
--- a/platform/android/export/export_plugin.cpp
+++ b/platform/android/export/export_plugin.cpp
@@ -248,6 +248,7 @@ static const char *AAB_ASSETS_DIRECTORY = "res://android/build/assetPacks/instal
 static const int DEFAULT_MIN_SDK_VERSION = 19; // Should match the value in 'platform/android/java/app/config.gradle#minSdk'
 static const int DEFAULT_TARGET_SDK_VERSION = 32; // Should match the value in 'platform/android/java/app/config.gradle#targetSdk'
 
+#ifndef ANDROID_ENABLED
 void EditorExportPlatformAndroid::_check_for_changes_poll_thread(void *ud) {
 	EditorExportPlatformAndroid *ea = static_cast<EditorExportPlatformAndroid *>(ud);
 
@@ -277,7 +278,6 @@ void EditorExportPlatformAndroid::_check_for_changes_poll_thread(void *ud) {
 			}
 		}
 
-#ifndef ANDROID_ENABLED
 		// Check for devices updates
 		String adb = get_adb_path();
 		if (FileAccess::exists(adb)) {
@@ -389,7 +389,6 @@ void EditorExportPlatformAndroid::_check_for_changes_poll_thread(void *ud) {
 				ea->devices_changed.set();
 			}
 		}
-#endif
 
 		uint64_t sleep = 200;
 		uint64_t wait = 3000000;
@@ -402,7 +401,6 @@ void EditorExportPlatformAndroid::_check_for_changes_poll_thread(void *ud) {
 		}
 	}
 
-#ifndef ANDROID_ENABLED
 	if (EditorSettings::get_singleton()->get("export/android/shutdown_adb_on_exit")) {
 		String adb = get_adb_path();
 		if (!FileAccess::exists(adb)) {
@@ -413,8 +411,8 @@ void EditorExportPlatformAndroid::_check_for_changes_poll_thread(void *ud) {
 		args.push_back("kill-server");
 		OS::get_singleton()->execute(adb, args);
 	}
-#endif
 }
+#endif
 
 String EditorExportPlatformAndroid::get_project_name(const String &p_name) const {
 	String aname;
@@ -3138,10 +3136,14 @@ EditorExportPlatformAndroid::EditorExportPlatformAndroid() {
 
 	devices_changed.set();
 	plugins_changed.set();
+#ifndef ANDROID_ENABLED
 	check_for_changes_thread.start(_check_for_changes_poll_thread, this);
+#endif
 }
 
 EditorExportPlatformAndroid::~EditorExportPlatformAndroid() {
+#ifndef ANDROID_ENABLED
 	quit_request.set();
 	check_for_changes_thread.wait_to_finish();
+#endif
 }
diff --git a/platform/android/export/export_plugin.h b/platform/android/export/export_plugin.h
index 9455967053..46012bd46c 100644
--- a/platform/android/export/export_plugin.h
+++ b/platform/android/export/export_plugin.h
@@ -80,10 +80,12 @@ class EditorExportPlatformAndroid : public EditorExportPlatform {
 	Vector<Device> devices;
 	SafeFlag devices_changed;
 	Mutex device_lock;
+#ifndef ANDROID_ENABLED
 	Thread check_for_changes_thread;
 	SafeFlag quit_request;
 
 	static void _check_for_changes_poll_thread(void *ud);
+#endif
 
 	String get_project_name(const String &p_name) const;
 
diff --git a/platform/android/file_access_filesystem_jandroid.cpp b/platform/android/file_access_filesystem_jandroid.cpp
index 6b21c18d59..56561cb616 100644
--- a/platform/android/file_access_filesystem_jandroid.cpp
+++ b/platform/android/file_access_filesystem_jandroid.cpp
@@ -46,6 +46,7 @@ jmethodID FileAccessFilesystemJAndroid::_file_seek_end = nullptr;
 jmethodID FileAccessFilesystemJAndroid::_file_read = nullptr;
 jmethodID FileAccessFilesystemJAndroid::_file_tell = nullptr;
 jmethodID FileAccessFilesystemJAndroid::_file_eof = nullptr;
+jmethodID FileAccessFilesystemJAndroid::_file_set_eof = nullptr;
 jmethodID FileAccessFilesystemJAndroid::_file_close = nullptr;
 jmethodID FileAccessFilesystemJAndroid::_file_write = nullptr;
 jmethodID FileAccessFilesystemJAndroid::_file_flush = nullptr;
@@ -162,6 +163,16 @@ bool FileAccessFilesystemJAndroid::eof_reached() const {
 	}
 }
 
+void FileAccessFilesystemJAndroid::_set_eof(bool eof) {
+	if (_file_set_eof) {
+		ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
+
+		JNIEnv *env = get_jni_env();
+		ERR_FAIL_COND(env == nullptr);
+		env->CallVoidMethod(file_access_handler, _file_set_eof, id, eof);
+	}
+}
+
 uint8_t FileAccessFilesystemJAndroid::get_8() const {
 	ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
 	uint8_t byte;
@@ -184,6 +195,7 @@ String FileAccessFilesystemJAndroid::get_line() const {
 	while (true) {
 		size_t line_buffer_size = MIN(buffer_size_limit, file_size - get_position());
 		if (line_buffer_size <= 0) {
+			const_cast<FileAccessFilesystemJAndroid *>(this)->_set_eof(true);
 			break;
 		}
 
@@ -310,6 +322,7 @@ void FileAccessFilesystemJAndroid::setup(jobject p_file_access_handler) {
 	_file_get_size = env->GetMethodID(cls, "fileGetSize", "(I)J");
 	_file_tell = env->GetMethodID(cls, "fileGetPosition", "(I)J");
 	_file_eof = env->GetMethodID(cls, "isFileEof", "(I)Z");
+	_file_set_eof = env->GetMethodID(cls, "setFileEof", "(IZ)V");
 	_file_seek = env->GetMethodID(cls, "fileSeek", "(IJ)V");
 	_file_seek_end = env->GetMethodID(cls, "fileSeekFromEnd", "(IJ)V");
 	_file_read = env->GetMethodID(cls, "fileRead", "(ILjava/nio/ByteBuffer;)I");
diff --git a/platform/android/file_access_filesystem_jandroid.h b/platform/android/file_access_filesystem_jandroid.h
index 7deb8de37b..76d7db6e3a 100644
--- a/platform/android/file_access_filesystem_jandroid.h
+++ b/platform/android/file_access_filesystem_jandroid.h
@@ -44,6 +44,7 @@ class FileAccessFilesystemJAndroid : public FileAccess {
 	static jmethodID _file_seek_end;
 	static jmethodID _file_tell;
 	static jmethodID _file_eof;
+	static jmethodID _file_set_eof;
 	static jmethodID _file_read;
 	static jmethodID _file_write;
 	static jmethodID _file_flush;
@@ -56,6 +57,7 @@ class FileAccessFilesystemJAndroid : public FileAccess {
 	String path_src;
 
 	void _close(); ///< close a file
+	void _set_eof(bool eof);
 
 public:
 	virtual Error _open(const String &p_path, int p_mode_flags) override; ///< open a file
diff --git a/platform/android/java/lib/src/org/godotengine/godot/io/file/DataAccess.kt b/platform/android/java/lib/src/org/godotengine/godot/io/file/DataAccess.kt
index 463dabfb23..f23537a29e 100644
--- a/platform/android/java/lib/src/org/godotengine/godot/io/file/DataAccess.kt
+++ b/platform/android/java/lib/src/org/godotengine/godot/io/file/DataAccess.kt
@@ -104,7 +104,6 @@ internal abstract class DataAccess(private val filePath: String) {
 
 	protected abstract val fileChannel: FileChannel
 	internal var endOfFile = false
-		private set
 
 	fun close() {
 		try {
@@ -125,9 +124,7 @@ internal abstract class DataAccess(private val filePath: String) {
 	fun seek(position: Long) {
 		try {
 			fileChannel.position(position)
-			if (position <= size()) {
-				endOfFile = false
-			}
+			endOfFile = position >= fileChannel.size()
 		} catch (e: Exception) {
 			Log.w(TAG, "Exception when seeking file $filePath.", e)
 		}
@@ -161,8 +158,7 @@ internal abstract class DataAccess(private val filePath: String) {
 	fun read(buffer: ByteBuffer): Int {
 		return try {
 			val readBytes = fileChannel.read(buffer)
-			endOfFile = readBytes == -1
-					|| (fileChannel.position() >= fileChannel.size() && fileChannel.size() > 0)
+			endOfFile = readBytes == -1 || (fileChannel.position() >= fileChannel.size())
 			if (readBytes == -1) {
 				0
 			} else {
diff --git a/platform/android/java/lib/src/org/godotengine/godot/io/file/FileAccessHandler.kt b/platform/android/java/lib/src/org/godotengine/godot/io/file/FileAccessHandler.kt
index 04b6772c45..83da3a24b3 100644
--- a/platform/android/java/lib/src/org/godotengine/godot/io/file/FileAccessHandler.kt
+++ b/platform/android/java/lib/src/org/godotengine/godot/io/file/FileAccessHandler.kt
@@ -194,6 +194,11 @@ class FileAccessHandler(val context: Context) {
 		return files[fileId].endOfFile
 	}
 
+	fun setFileEof(fileId: Int, eof: Boolean) {
+		val file = files[fileId] ?: return
+		file.endOfFile = eof
+	}
+
 	fun fileClose(fileId: Int) {
 		if (hasFileId(fileId)) {
 			files[fileId].close()
diff --git a/platform/ios/export/export_plugin.cpp b/platform/ios/export/export_plugin.cpp
index 2771ab8ca2..425a977569 100644
--- a/platform/ios/export/export_plugin.cpp
+++ b/platform/ios/export/export_plugin.cpp
@@ -1884,10 +1884,14 @@ bool EditorExportPlatformIOS::has_valid_project_configuration(const Ref<EditorEx
 EditorExportPlatformIOS::EditorExportPlatformIOS() {
 	logo = ImageTexture::create_from_image(memnew(Image(_ios_logo)));
 	plugins_changed.set();
+#ifndef ANDROID_ENABLED
 	check_for_changes_thread.start(_check_for_changes_poll_thread, this);
+#endif
 }
 
 EditorExportPlatformIOS::~EditorExportPlatformIOS() {
+#ifndef ANDROID_ENABLED
 	quit_request.set();
 	check_for_changes_thread.wait_to_finish();
+#endif
 }
diff --git a/platform/ios/export/export_plugin.h b/platform/ios/export/export_plugin.h
index 8079eda8f6..abda8e218a 100644
--- a/platform/ios/export/export_plugin.h
+++ b/platform/ios/export/export_plugin.h
@@ -57,8 +57,10 @@ class EditorExportPlatformIOS : public EditorExportPlatform {
 
 	// Plugins
 	SafeFlag plugins_changed;
+#ifndef ANDROID_ENABLED
 	Thread check_for_changes_thread;
 	SafeFlag quit_request;
+#endif
 	Mutex plugins_lock;
 	Vector<PluginConfigIOS> plugins;
 
@@ -139,6 +141,7 @@ class EditorExportPlatformIOS : public EditorExportPlatform {
 		return true;
 	}
 
+#ifndef ANDROID_ENABLED
 	static void _check_for_changes_poll_thread(void *ud) {
 		EditorExportPlatformIOS *ea = static_cast<EditorExportPlatformIOS *>(ud);
 
@@ -172,6 +175,7 @@ class EditorExportPlatformIOS : public EditorExportPlatform {
 			}
 		}
 	}
+#endif
 
 protected:
 	virtual void get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) const override;