48 lines
1.5 KiB
Kotlin
48 lines
1.5 KiB
Kotlin
package sushi.hardcore.droidfs.content_providers
|
|
|
|
import android.net.Uri
|
|
import android.os.ParcelFileDescriptor
|
|
import sushi.hardcore.droidfs.BuildConfig
|
|
import sushi.hardcore.droidfs.MemFile
|
|
import java.io.FileInputStream
|
|
import java.util.UUID
|
|
|
|
class MemoryFileProvider: TemporaryFileProvider<MemFile>() {
|
|
companion object {
|
|
private const val AUTHORITY = BuildConfig.APPLICATION_ID + ".memory_provider"
|
|
private val BASE_URI: Uri = Uri.parse("content://$AUTHORITY")
|
|
|
|
private var files = HashMap<Uri, TemporaryFileProvider<MemFile>.SharedFile>()
|
|
|
|
fun wipe() {
|
|
for (i in files.values) {
|
|
i.file.close()
|
|
}
|
|
files.clear()
|
|
}
|
|
}
|
|
|
|
override fun onCreate(): Boolean = true
|
|
|
|
override fun getFile(uri: Uri): SharedFile? = files[uri]
|
|
|
|
override fun newFile(name: String, size: Long): Uri? {
|
|
val uuid = UUID.randomUUID().toString()
|
|
return Uri.withAppendedPath(BASE_URI, uuid).also {
|
|
files[it] = SharedFile(name, size, MemFile.create(uuid, size) ?: return null)
|
|
}
|
|
}
|
|
|
|
override fun delete(uri: Uri, selection: String?, selectionArgs: Array<out String>?): Int {
|
|
return if (files.remove(uri)?.file?.close() == null) 0 else 1
|
|
}
|
|
|
|
override fun openFile(uri: Uri, mode: String): ParcelFileDescriptor? {
|
|
return files[uri]?.file?.getParcelFileDescriptor()?.also {
|
|
FileInputStream(it.fileDescriptor).apply {
|
|
channel.position(0)
|
|
close()
|
|
}
|
|
}
|
|
}
|
|
} |