start moving to kotlinx-io

common/build.gradle

@@ -11,6 +11,7 @@ kotlin {
         commonMain {
             dependencies {
                 api libs.klock
+                api libs.kt.io
             }
         }
         jvmMain {

common/src/commonMain/kotlin/dev/inmo/micro_utils/common/MPPFile.kt

@@ -1,5 +1,11 @@
 package dev.inmo.micro_utils.common
 
+import kotlinx.io.Buffer
+import kotlinx.io.Source
+import kotlinx.io.buffered
+import kotlinx.io.files.Path
+import kotlinx.io.files.SystemFileSystem
+import kotlinx.io.readByteArray
 import kotlinx.serialization.Serializable
 import kotlin.jvm.JvmInline
 
@@ -23,12 +29,31 @@ value class FileName(val string: String) {
 }
 
 
-expect class MPPFile
+typealias MPPFile = Path
 
-expect val MPPFile.filename: FileName
-expect val MPPFile.filesize: Long
-expect val MPPFile.bytesAllocatorSync: ByteArrayAllocator
-expect val MPPFile.bytesAllocator: SuspendByteArrayAllocator
+val MPPFile.filename: FileName
+    get() = FileName(name)
+val MPPFile.filesize: Long
+    get() = SystemFileSystem.metadataOrNull(this) ?.size ?.takeIf { it > -1 } ?: error("Path $filename does not exists or is folder")
+val MPPFile.bytesAllocatorSync: ByteArrayAllocator
+    get() = {
+        source().readByteArray()
+    }
+val MPPFile.bytesAllocator: SuspendByteArrayAllocator
+    get() = {
+        bytesAllocatorSync()
+    }
 fun MPPFile.bytesSync() = bytesAllocatorSync()
 suspend fun MPPFile.bytes() = bytesAllocator()
 
+fun MPPFile.source(): Source = SystemFileSystem.source(this).buffered()
+
+
+//expect class MPPFile
+//
+//expect val MPPFile.filename: FileName
+//expect val MPPFile.filesize: Long
+//expect val MPPFile.bytesAllocatorSync: ByteArrayAllocator
+//expect val MPPFile.bytesAllocator: SuspendByteArrayAllocator
+//fun MPPFile.bytesSync() = bytesAllocatorSync()
+//suspend fun MPPFile.bytes() = bytesAllocator()