iosMain.kz.bcc.filempp.FileManagerUtil.kt Maven / Gradle / Ivy

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BCC File MPP
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package kz.bcc.filempp

import cocoapods.SSZipArchive.SSZipArchive
import kotlinx.cinterop.addressOf
import kotlinx.cinterop.allocArrayOf
import kotlinx.cinterop.memScoped
import kotlinx.cinterop.usePinned
import platform.Foundation.*
import platform.posix.memcpy

actual object FileManagerUtil {
    actual fun saveFile(name: String, byteArray: ByteArray) {
        val fileManager = NSFileManager.defaultManager()
        val filePath = getCacheDir() + name
        if (fileManager.fileExistsAtPath(filePath)) {
            removeFile(filePath)
        }
        fileManager.createFileAtPath(filePath, byteArray.toNSData(), null)
    }


    actual fun checkFile(name: String): Boolean {
        val fileManager = NSFileManager.defaultManager()
        return fileManager.fileExistsAtPath(name)
    }

    actual fun removeFile(name: String) {
        val fileManager = NSFileManager.defaultManager()
        fileManager.removeItemAtPath(name, null)
    }

    actual fun getFile(name: String): ByteArray? {
        val filePath = getCacheDir() + name
        return NSData.dataWithContentsOfFile(filePath)?.toByteArray()
    }

    actual fun unzipFile(name: String) {
        val path = getCacheDir()
        SSZipArchive.unzipFileAtPath(path + name, path)
    }

    actual fun getJsonAsString(name: String): String {
       return try{
            val filePath = getCacheDir() + name
            val json = NSString.stringWithContentsOfFile(filePath, NSUTF8StringEncoding, null)
           json ?: ""
        }catch (e:Exception){
            ""
        }
    }


    private fun NSData.toByteArray(): ByteArray = ByteArray([email protected]()).apply {
        usePinned {
            memcpy(it.addressOf(0), [email protected], [email protected])
        }
    }

    private fun ByteArray.toNSData(): NSData = memScoped {
        NSData.create(
            bytes = allocArrayOf(this@toNSData),
            length = [email protected]()
        )
    }

    private fun getCacheDir(): String {
        return (NSFileManager.defaultManager().URLsForDirectory(9.toULong(), 1.toULong())
            .firstOrNull() as? NSURL)?.path + "/"
    }
}