+ByteChunk
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@ -8,7 +8,7 @@ plugins {
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val serialization_version = "1.6.5-SNAPSHOT"
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val serialization_version = "1.6.5-SNAPSHOT"
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group = "net.sergeych"
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group = "net.sergeych"
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version = "0.1.7"
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version = "0.1.8-SNAPSHOT"
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repositories {
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repositories {
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mavenCentral()
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mavenCentral()
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80
src/commonMain/kotlin/net.sergeych.bintools/ByteChunk.kt
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80
src/commonMain/kotlin/net.sergeych.bintools/ByteChunk.kt
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@ -0,0 +1,80 @@
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package net.sergeych.bintools
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import kotlinx.serialization.Serializable
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import kotlin.math.min
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import kotlin.random.Random
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/**
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* Bytes sequence with comparison, concatenation, and string representation,
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* could be used as hash keys for pure binary values, etc.
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*/
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@Suppress("unused")
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@Serializable
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class ByteChunk(val data: UByteArray): Comparable<ByteChunk> {
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val size: Int get() = data.size
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/**
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* Per-byte comparison also of different length. From two chunks
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* of different size but equal beginning, the shorter is considered
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* the smaller.
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*/
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override fun compareTo(other: ByteChunk): Int {
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val limit = min(size, other.size)
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for( i in 0 ..< limit) {
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val own = data[i]
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val their = other.data[i]
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if( own < their) return -1
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else if( own > their) return 1
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}
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if( size < other.size ) return -1
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if( size > other.size ) return 1
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return 0
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}
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/**
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* Equal chunks means content equality.
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*/
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override fun equals(other: Any?): Boolean {
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if (this === other) return true
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if (other !is ByteChunk) return false
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return data contentEquals other.data
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}
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/**
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* Content-based hash code
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*/
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override fun hashCode(): Int {
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return data.contentHashCode()
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}
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/**
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* hex representation of data
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*/
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override fun toString(): String = hex
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/**
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* Hex encoded data
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*/
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val hex by lazy { data.encodeToHex() }
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/**
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* human-readable dump
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*/
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val dump by lazy { data.toDump() }
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/**
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* Concatenate two chunks and return new one
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*/
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operator fun plus(other: ByteChunk): ByteChunk = ByteChunk(data + other.data)
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companion object {
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fun fromHex(hex: String): ByteChunk = ByteChunk(hex.decodeHex().asUByteArray())
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fun random(size: Int=16): ByteChunk = Random.nextBytes(size).asChunk()
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}
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}
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fun ByteArray.asChunk() = ByteChunk(this.asUByteArray())
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@Suppress("unused")
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fun UByteArray.asChunk() = ByteChunk(this)
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@ -113,6 +113,8 @@ fun Collection<Byte>.encodeToHex(separator: String = " "): String = joinToString
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fun ByteArray.toDump(wide: Boolean = false): String = toDumpLines(wide).joinToString("\n")
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fun ByteArray.toDump(wide: Boolean = false): String = toDumpLines(wide).joinToString("\n")
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fun UByteArray.toDump(wide: Boolean = false): String = asByteArray().toDumpLines(wide).joinToString("\n")
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fun ByteArray.toDumpLines(wide: Boolean = false): List<String> {
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fun ByteArray.toDumpLines(wide: Boolean = false): List<String> {
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val lineSize = if (wide) 32 else 16
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val lineSize = if (wide) 32 else 16
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