[FileAccess] Implement `resize` method.

2 files changed, 31 insertions, 0 deletions

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 0f447f0b05..b155c4e488 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
@@ -36,7 +36,9 @@ import android.util.Log
 import org.godotengine.godot.io.StorageScope
 import java.io.IOException
 import java.nio.ByteBuffer
+import java.nio.channels.ClosedChannelException
 import java.nio.channels.FileChannel
+import java.nio.channels.NonWritableChannelException
 import kotlin.math.max
 
 /**
@@ -50,6 +52,11 @@ internal abstract class DataAccess(private val filePath: String) {
 	companion object {
 		private val TAG = DataAccess::class.java.simpleName
 
+		private const val OK_ERROR_ID = 0;
+		private const val FAILED_ERROR_ID = -1;
+		private const val FILE_CANT_OPEN_ERROR_ID = -2;
+		private const val INVALID_PARAMETER_ERROR_ID = -3;
+
 		fun generateDataAccess(
 			storageScope: StorageScope,
 			context: Context,
@@ -135,6 +142,21 @@ internal abstract class DataAccess(private val filePath: String) {
 		seek(positionFromBeginning)
 	}
 
+	fun resize(length: Long): Int {
+		return try {
+			fileChannel.truncate(length)
+			OK_ERROR_ID
+		} catch (e: NonWritableChannelException) {
+			FILE_CANT_OPEN_ERROR_ID
+		} catch (e: ClosedChannelException) {
+			FILE_CANT_OPEN_ERROR_ID
+		} catch (e: IllegalArgumentException) {
+			INVALID_PARAMETER_ERROR_ID
+		} catch (e: IOException) {
+			FAILED_ERROR_ID
+		}
+	}
+
 	fun position(): Long {
 		return try {
 			fileChannel.position()
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 50741c1aab..6a8a10e56f 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
@@ -45,6 +45,7 @@ class FileAccessHandler(val context: Context) {
 	companion object {
 		private val TAG = FileAccessHandler::class.java.simpleName
 
+		private const val FAILED_ERROR_ID = -1;
 		private const val FILE_NOT_FOUND_ERROR_ID = -1
 		internal const val INVALID_FILE_ID = 0
 		private const val STARTING_FILE_ID = 1
@@ -190,6 +191,14 @@ class FileAccessHandler(val context: Context) {
 		}
 	}
 
+	fun fileResize(fileId: Int, length: Long): Int {
+		if (!hasFileId(fileId)) {
+			return FAILED_ERROR_ID
+		}
+
+		return files[fileId].resize(length)
+	}
+
 	fun fileGetPosition(fileId: Int): Long {
 		if (!hasFileId(fileId)) {
 			return 0L