52 lines
2.1 KiB
Kotlin
52 lines
2.1 KiB
Kotlin
package sushi.hardcore.aira.utils
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import android.content.ContentValues
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import android.content.Context
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import android.os.Environment
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import android.provider.MediaStore
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import android.webkit.MimeTypeMap
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import java.io.File
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import java.io.OutputStream
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import java.text.DecimalFormat
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import java.text.SimpleDateFormat
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import java.util.*
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import kotlin.math.pow
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import kotlin.math.log10
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object FileUtils {
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private val units = arrayOf("B", "kB", "MB", "GB", "TB")
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fun formatSize(size: Long): String {
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if (size <= 0) {
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return "0 B"
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}
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val digitGroups = (log10(size.toDouble()) / log10(1000.0)).toInt()
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return DecimalFormat("#,##0.#").format(size / 1000.0.pow(digitGroups.toDouble())
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) + " " + units[digitGroups]
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}
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fun openFileForDownload(context: Context, fileName: String): OutputStream? {
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val fileExtension = fileName.substringAfterLast(".")
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val dateExtension = SimpleDateFormat("yyyyMMddHHmmss", Locale.getDefault()).format(Date())
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val datedFilename = if (fileName.contains(".")) {
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val basename = fileName.substringBeforeLast(".")
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"""${basename}_$dateExtension.$fileExtension"""
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} else {
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fileName + "_" + dateExtension
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}
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return if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q) {
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context.contentResolver.insert(
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MediaStore.Downloads.EXTERNAL_CONTENT_URI,
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ContentValues().apply {
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put(MediaStore.Images.Media.TITLE, datedFilename)
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put(MediaStore.Images.Media.DISPLAY_NAME, datedFilename)
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put(MediaStore.Images.Media.MIME_TYPE, MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension))
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}
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)?.let {
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context.contentResolver.openOutputStream(it)
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}
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} else {
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@Suppress("Deprecation")
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File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), File(datedFilename).name).outputStream()
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}
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}
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} |