org.jetbrains.kotlin.gradle.targets.js.utils.kt Maven / Gradle / Ivy

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Kotlin Gradle Plugin

There is a newer version: 2.0.20-Beta1

/*
 * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

package org.jetbrains.kotlin.gradle.targets.js

import org.gradle.internal.hash.FileHasher
import org.gradle.internal.hash.Hashing.defaultFunction
import org.jetbrains.kotlin.gradle.utils.appendLine
import java.io.File

fun Appendable.appendConfigsFromDir(confDir: File) {
    val files = confDir.listFiles() ?: return

    files.asSequence()
        .filter { it.isFile }
        .filter { it.extension == "js" }
        .sortedBy { it.name }
        .forEach {
            appendLine("// ${it.name}")
            append(it.readText())
            appendLine()
            appendLine()
        }
}

fun ByteArray.toHex(): String {
    val result = CharArray(size * 2) { ' ' }
    var i = 0
    forEach {
        val n = it.toInt()
        result[i++] = Character.forDigit(n shr 4 and 0xF, 16)
        result[i++] = Character.forDigit(n and 0xF, 16)
    }
    return String(result)
}

fun FileHasher.calculateDirHash(
    dir: File
): String? {
    if (!dir.isDirectory) return null

    val hasher = defaultFunction().newHasher()
    dir.walk()
        .forEach { file ->
            hasher.putString(file.toRelativeString(dir))
            if (file.isFile) {
                hasher.putHash(hash(file))
            }
        }

    val digest = hasher.hash().toByteArray()

    return digest.toHex()
}

const val JS = "js"
const val JS_MAP = "js.map"
const val META_JS = "meta.js"