main.kotlin.com.intuit.playerui.bridge.loader.ResourceLoaderDelegate.kt Maven / Gradle / Ivy

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package com.intuit.playerui.bridge.loader

import com.facebook.soloader.nativeloader.NativeLoaderDelegate
import java.io.InputStream
import kotlin.io.path.createTempFile
import kotlin.io.path.outputStream

/** Simple [NativeLoaderDelegate] for loading a native library packed as resources */
internal class ResourceLoaderDelegate : NativeLoaderDelegate {
    private val loaded = mutableListOf()

    override fun loadLibrary(shortName: String, flags: Int): Boolean {
        if (loaded.contains(shortName)) return true

        // Try to find any resources that might match the shortName - this doesn't account for checking platform compatibility, and should only be used to load host-compatible libraries
        val resource = getResourceAsStream("$shortName.so")
            ?: getResourceAsStream("$shortName.dylib")
            ?: getResourceAsStream("lib$shortName.so")
            ?: getResourceAsStream("lib$shortName.dylib")
            ?: getResourceAsStream("$shortName/$shortName.so")
            ?: getResourceAsStream("$shortName/$shortName.dylib")
            ?: getResourceAsStream("$shortName/lib$shortName.so")
            ?: getResourceAsStream("$shortName/lib$shortName.dylib")
            ?: getResourceAsStream("$shortName/lib/$shortName.so")
            ?: getResourceAsStream("$shortName/lib/$shortName.dylib")
            ?: getResourceAsStream("$shortName/lib/lib$shortName.so")
            ?: getResourceAsStream("$shortName/lib/lib$shortName.dylib")
            ?: throw UnsatisfiedLinkError("Unable to load resource for $shortName. This is a fallback used when the NativeLoader is not initialized. If this is in an Android context, make sure you initialize with SoLoader in your application, or containing activity. Otherwise, ensure you have provided the host-compatible Hermes libraries as resources (i.e. //jvm/hermes:hermes-host).")

        val rewritten = resource.writeTemp("lib$shortName", ".so")
        System.load(rewritten.toString())

        loaded.add(shortName)

        return true
    }

    override fun getLibraryPath(libName: String?) = null

    override fun getSoSourcesVersion(): Int = 0

    private fun InputStream.writeTemp(prefix: String? = null, suffix: String? = ".so") = use {
        createTempFile(prefix, suffix).apply { outputStream().use(::copyTo) }
    }

    private companion object {
        private val classLoader = ResourceLoaderDelegate::class.java.classLoader

        private fun getResourceAsStream(resourceName: String): InputStream? =
            classLoader.getResourceAsStream(resourceName)
    }
}