+ByteChunk

README.md

@@ -6,6 +6,8 @@ in native targets.
 
 # Recent changes
 
+- 0.1.7 built with kotlin 2.0.20 which contains important fix in wasmJS
+
 - 0.1.6 add many useful features, added support to wasmJS and all other platforms. Note to wasmJS: it appears to be a bug in wasm compiler so BipackDecoder could cause wasm loading problem.
 
 - 0.1.1: added serialized KVStorage with handy implementation on JVM and JS platforms and some required synchronization
@@ -15,6 +17,10 @@ in native targets.
 
 The last 1.8-based version is 0.0.8. Some fixes are not yet backported to it pls leave an issue of needed.
 
+# Documentation
+
+Aside of the samples in this readme please see [library documentation](https://code.sergeych.net/docs/mp_bintools/).
+
 # Usage
 
 Add our maven:
@@ -31,7 +37,7 @@ And add dependency to the proper place in your project like this:
 ```kotlin
 dependencies {
     // ...
-    implementation("net.sergeych:mp_bintools:0.1.0")
+    implementation("net.sergeych:mp_bintools:0.1.7")
 }
 ```
 

build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
-    kotlin("multiplatform") version "2.0.0"
-    kotlin("plugin.serialization") version "2.0.0"
+    kotlin("multiplatform") version "2.0.20"
+    kotlin("plugin.serialization") version "2.0.20"
     id("org.jetbrains.dokka") version "1.9.20"
     `maven-publish`
 }
@@ -8,7 +8,7 @@ plugins {
 val serialization_version = "1.6.5-SNAPSHOT"
 
 group = "net.sergeych"
-version = "0.1.6"
+version = "0.1.8-SNAPSHOT"
 
 repositories {
     mavenCentral()
@@ -18,15 +18,7 @@ repositories {
 
 kotlin {
     jvmToolchain(8)
-    jvm {
-//        compilations.all {
-//            kotlinOptions.jvmTarget = "1.8"
-//        }
-        withJava()
-        testRuns["test"].executionTask.configure {
-            useJUnitPlatform()
-        }
-    }
+    jvm()
     js {
       browser()
       nodejs()

gradle.properties

@@ -1,2 +1,3 @@
 kotlin.code.style=official
 kotlin.js.compiler=ir
+kotlin.mpp.applyDefaultHierarchyTemplate=false

src/commonMain/kotlin/net.sergeych.bintools/ByteChunk.kt

@@ -0,0 +1,80 @@
+package net.sergeych.bintools
+
+import kotlinx.serialization.Serializable
+import kotlin.math.min
+import kotlin.random.Random
+
+/**
+ * Bytes sequence with comparison, concatenation, and string representation,
+ * could be used as hash keys for pure binary values, etc.
+ */
+@Suppress("unused")
+@Serializable
+class ByteChunk(val data: UByteArray): Comparable<ByteChunk> {
+
+    val size: Int get() = data.size
+
+    /**
+     * Per-byte comparison also of different length. From two chunks
+     * of different size but equal beginning, the shorter is considered
+     * the smaller.
+     */
+    override fun compareTo(other: ByteChunk): Int {
+        val limit = min(size, other.size)
+        for( i in 0 ..< limit) {
+            val own = data[i]
+            val their = other.data[i]
+            if( own < their) return -1
+            else if( own > their) return 1
+        }
+        if( size < other.size ) return -1
+        if( size > other.size ) return 1
+        return 0
+    }
+
+    /**
+     * Equal chunks means content equality.
+     */
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is ByteChunk) return false
+
+        return data contentEquals other.data
+    }
+
+    /**
+     * Content-based hash code
+     */
+    override fun hashCode(): Int {
+        return data.contentHashCode()
+    }
+
+    /**
+     * hex representation of data
+     */
+    override fun toString(): String = hex
+
+    /**
+     * Hex encoded data
+     */
+    val hex by lazy { data.encodeToHex() }
+
+    /**
+     * human-readable dump
+     */
+    val dump by lazy { data.toDump() }
+
+    /**
+     * Concatenate two chunks and return new one
+     */
+    operator fun plus(other: ByteChunk): ByteChunk = ByteChunk(data + other.data)
+
+    companion object {
+        fun fromHex(hex: String): ByteChunk = ByteChunk(hex.decodeHex().asUByteArray())
+        fun random(size: Int=16): ByteChunk = Random.nextBytes(size).asChunk()
+    }
+}
+
+fun ByteArray.asChunk() = ByteChunk(this.asUByteArray())
+@Suppress("unused")
+fun UByteArray.asChunk() = ByteChunk(this)

src/commonMain/kotlin/net.sergeych.bintools/DataKVStorage.kt

@@ -2,11 +2,18 @@ package net.sergeych.bintools
 
 import net.sergeych.bipack.BipackDecoder
 import net.sergeych.bipack.BipackEncoder
+import net.sergeych.mp_logger.LogTag
+import net.sergeych.mp_logger.Loggable
+import net.sergeych.mp_logger.debug
+import net.sergeych.synctools.AtomicCounter
 import net.sergeych.synctools.ProtectedOp
 import net.sergeych.synctools.WaitHandle
 import net.sergeych.synctools.withLock
 
-class DataKVStorage(private val provider: DataProvider) : KVStorage {
+private val ac = AtomicCounter(0)
+
+class DataKVStorage(private val provider: DataProvider) : KVStorage,
+    Loggable by LogTag("DKVS${ac.incrementAndGet()}") {
 
     data class Lock(val name: String) {
         private val exclusive = ProtectedOp()
@@ -20,8 +27,6 @@ class DataKVStorage(private val provider: DataProvider) : KVStorage {
                 exclusive.withLock {
                     if (readerCount == 0) {
                         return f()
-                    } else {
-                        println("can't lock $this: count is $readerCount")
                     }
                 }
                 pulses.await()
@@ -49,19 +54,16 @@ class DataKVStorage(private val provider: DataProvider) : KVStorage {
         access.withLock {
             // TODO: read keys
             for (fn in provider.list()) {
-                println("Scanning: $fn")
+                debug { "Scanning: $fn" }
                 if (fn.endsWith(".d")) {
                     val id = fn.dropLast(2).toInt(16)
-                    println("found data record: $fn -> $id")
-
+                    debug  { "found data record: $fn -> $id" }
                     val name = provider.read(fn) { BipackDecoder.decode<String>(it) }
-                    println("Key=$name")
                     keyIds[name] = id
                     if (id > lastId) lastId = id
-                } else println("ignoring record $fn")
+                } else debug { "ignoring record $fn" }
             }
         }
-        println("initialized, ${keyIds.size} records found, lastId=$lastId")
     }
 
 
@@ -97,7 +99,7 @@ class DataKVStorage(private val provider: DataProvider) : KVStorage {
         lock.lockExclusive { provider.write(recordName(id), f) }
     }
 
-    fun deleteEntry(name: String) {
+    private fun deleteEntry(name: String) {
         // fast pre-check:
         if (name !in keyIds) return
         // global lock: we can't now detect concurrent delete + write ops, so exclusive:

src/commonMain/kotlin/net.sergeych.bintools/KVStorage.kt

@@ -119,7 +119,6 @@ class KVStorageDelegate<T>(
     operator fun getValue(thisRef: Any?, property: KProperty<*>): T {
         if (cacheReady) return cachedValue
         val data = storage.get(name(property))
-        println("Got data: ${data?.toDump()}")
         if (data == null)
             cachedValue = defaultValue
         else
@@ -132,7 +131,6 @@ class KVStorageDelegate<T>(
 //        if (!cacheReady || value != cachedValue) {
             cachedValue = value
             cacheReady = true
-            println("set ${name(property)} to ${BipackEncoder.encode(serializer, value).toDump()}")
             storage[name(property)] = BipackEncoder.encode(serializer, value)
 //        }
     }

src/commonMain/kotlin/net.sergeych.bintools/simple_codecs.kt

@@ -113,6 +113,8 @@ fun Collection<Byte>.encodeToHex(separator: String = " "): String = joinToString
 
 fun ByteArray.toDump(wide: Boolean = false): String = toDumpLines(wide).joinToString("\n")
 
+fun UByteArray.toDump(wide: Boolean = false): String = asByteArray().toDumpLines(wide).joinToString("\n")
+
 fun ByteArray.toDumpLines(wide: Boolean = false): List<String> {
 
     val lineSize = if (wide) 32 else 16

src/commonTest/kotlin/bipack/BipackEncoderTest.kt

@@ -30,6 +30,7 @@ data class Foobar2(val bar: Int, val foo: Int, val other: Int = -1)
 @Framed
 data class FoobarF1(val bar: Int, val foo: Int = 117)
 
+@Suppress("unused")
 @Serializable
 @Framed
 @SerialName("bipack.FoobarF1")
@@ -440,4 +441,21 @@ class BipackEncoderTest {
         println(y)
     }
 
+
+    @Serializable
+    data class T1(@Fixed val i: Byte)
+
+    @Test
+    fun testFixedByte() {
+        fun t1(i: Int) {
+            val packed = BipackEncoder.encode(T1(i.toByte()))
+            println(packed.toDump())
+            assertEquals(1, packed.size)
+            assertEquals(i, BipackDecoder.decode<T1>(packed).i.toInt())
+        }
+        t1(127)
+        t1(-127)
+        t1(1)
+        t1(-1)
+    }
 }

src/jvmMain/kotlin/net/sergeych/synctools/ContinuationHandler.kt

@@ -0,0 +1,34 @@
+@file:Suppress("unused")
+
+package net.sergeych.synctools
+
+import java.nio.channels.CompletionHandler
+import kotlin.coroutines.Continuation
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+
+/**
+ * Helper class to handle Java continuation with Kotlin coroutines.
+ * Usage sample:
+ * ```kotlin
+ * val socket = withContext(Dispatchers.IO) {
+ *     AsynchronousSocketChannel.open()
+ * }
+ * suspendCoroutine { cont ->
+ *     socket.connect(address.socketAddress, cont, VoidCompletionHandler)
+ * }
+ * ```
+ */
+open class ContinuationHandler<T> : CompletionHandler<T, Continuation<T>> {
+    override fun completed(result: T, attachment: Continuation<T>) {
+        attachment.resume(result)
+    }
+
+    override fun failed(exc: Throwable, attachment: Continuation<T>) {
+        attachment.resumeWithException(exc)
+    }
+}
+
+object VoidCompletionHandler : ContinuationHandler<Void>()
+
+object IntCompletionHandler : ContinuationHandler<Int>()

src/wasmJsTest/kotlin/EmptyTest.kt

@@ -1,9 +0,0 @@
-import kotlin.test.Test
-
-class EmptyTest {
-    @Test
-    fun emptyTest() {
-        println("hello!")
-    }
-
-}

src/wasmJsTest/kotlin/StorageTest.kt

@@ -5,10 +5,6 @@ import kotlin.test.assertNull
 import kotlin.test.assertTrue
 
 class StorageTest {
-    @Test
-    fun emptyTest() {
-        println("hello")
-    }
 
     @Test
     fun storageTest() {
@@ -27,7 +23,6 @@ class StorageTest {
         assertEquals(answer, 42)
         answer = 43
 
-        println("----------------------------------------------------------------")
         val s2 = defaultNamedStorage("test_mp_bintools")
         val foo1 by s2.stored("?", "foo")
         val answer1: Int? by s2.optStored("answer")