chinwag-android/app/src/main/java/com/keylesspalace/tusky/util/IOUtils.kt
Christophe Beyls 65af26993b
Optimize I/O code using Okio (#4366)
This pull request takes advantage of the Okio library to simplify, fix
or improve performance of some I/O related code in Tusky.

- Return early or throw `FileNotFoundException` early in case
`contentResolver.openInputStream()` returns `null` instead of throwing
`NullPointerException` later. Change the signature of
`Closeable.closeQuietly()` to only accept a non-null `Closeable`.
- Reimplement `Uri.copyToFile()` using Okio. This takes advantage of the
built-in high-performance buffers of the library so a buffer doesn't
need to be allocated or managed manually. The new implementation also
makes sure that the input and output streams are always closed, as the
original code could in some cases return without properly closing a
stream.
- Reimplement `ProgressRequestBody` as `Uri.asRequestBody()` (adding to
the existing extension functions available in the Okio library to create
a `RequestBody`). The new implementation uses Okio's `Buffer` instead of
a manually managed byte array, which allows to avoid copying bytes from
one buffer to the next. The max number of bytes read at once was
increased from 2K to 8K to improve performance. Avoid division by zero
in case `contentLength` is `0`. Finally, this implementation now takes a
`Uri` as input instead of an `InputStream`, because a `RequestBody` must
be replayable in case Okio retries the request, and an `InputStream` can
only be used once.
2024-04-10 21:52:55 +02:00

47 lines
1.4 KiB
Kotlin

/* Copyright 2017 Andrew Dawson
*
* This file is a part of Tusky.
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Tusky is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Tusky; if not,
* see <http://www.gnu.org/licenses>. */
package com.keylesspalace.tusky.util
import android.content.ContentResolver
import android.net.Uri
import java.io.Closeable
import java.io.File
import java.io.IOException
import okio.buffer
import okio.sink
import okio.source
fun Closeable.closeQuietly() {
try {
close()
} catch (e: IOException) {
// intentionally unhandled
}
}
fun Uri.copyToFile(contentResolver: ContentResolver, file: File): Boolean {
return try {
val inputStream = contentResolver.openInputStream(this) ?: return false
inputStream.source().use { source ->
file.sink().buffer().use { bufferedSink ->
bufferedSink.writeAll(source)
}
}
true
} catch (e: IOException) {
false
}
}