Add UnpackJob class to unpack an archive (29f4ded2) · Commits · e / os / android_packages_apps_DocumentsUI

res/values/strings.xml

+4 −0

Original line number	Diff line number	Diff line
		@@ -419,6 +419,10 @@
		=1 {Copying <xliff:g id="filename" example="foobar.txt">{filename}</xliff:g> to <xliff:g id="directory" example="example folder">{directory}</xliff:g>}
		other {Copying # files to <xliff:g id="directory" example="example folder">{directory}</xliff:g>}
		}</string>
		<string name="extract_in_progress" translatable="false">{count, plural,
		=1 {Extracting \u201C<xliff:g id="filename" example="foobar.txt">{filename}</xliff:g>\u201D to \u201C<xliff:g id="directory" example="example folder">{directory}</xliff:g>\u201D}
		other {Extracting # archives to \u201C<xliff:g id="directory" example="example folder">{directory}</xliff:g>\u201D}
		}</string>
		<string name="move_in_progress" translatable="false">{count, plural,
		=1 {Moving <xliff:g id="filename" example="foobar.txt">{filename}</xliff:g> to <xliff:g id="directory" example="example folder">{directory}</xliff:g>}
		other {Moving # files to <xliff:g id="directory" example="example folder">{directory}</xliff:g>}

src/com/android/documentsui/archives/ReadableArchive.java

+20 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,8 @@ import static android.os.ParcelFileDescriptor.MODE_READ_ONLY;

		import static com.android.documentsui.base.SharedMinimal.DEBUG;

		import static java.util.Collections.unmodifiableList;

		import android.content.Context;
		import android.content.res.AssetFileDescriptor;
		import android.graphics.Point;
		@@ -64,6 +66,8 @@ import java.util.Stack;
		public class ReadableArchive extends Archive {
		private static final String TAG = "ReadableArchive";

		// All the archive entries, in the order they are listed in the archive.
		private final List<ArchiveEntry> mAllEntries = new ArrayList<>();
		private final StorageManager mStorageManager;
		private final ArchiveHandle mArchiveHandle;
		private final ParcelFileDescriptor mParcelFileDescriptor;
		@@ -98,6 +102,8 @@ public class ReadableArchive extends Archive {
		final Stack<ArchiveEntry> stack = new Stack<>();
		while (it.hasMoreElements()) {
		entry = it.nextElement();
		mAllEntries.add(entry);

		if (entry.isDirectory() != entry.getName().endsWith("/")) {
		if (DEBUG) {
		Log.d(TAG, "directory entry doesn't end with /");
		@@ -342,6 +348,20 @@ public class ReadableArchive extends Archive {
		openDocument(documentId, "r", signal), 0, entry.getSize(), null);
		}

		/**
		* Gets the unmodifiable list of all the entries of this archive, in the original order they are
		* stored in the archive.
		*/
		public List<ArchiveEntry> getEntries() {
		return unmodifiableList(mAllEntries);
		}

		/** Gets an InputStream for reading the contents of the given entry. */
		public @NonNull InputStream getInputStream(@NonNull ArchiveEntry entry)
		throws IOException, CompressorException, ArchiveException {
		return mArchiveHandle.getInputStream(entry);
		}

		/**
		* Closes an archive.
		*

src/com/android/documentsui/dirlist/DirectoryFragment.java

+4 −2

Original line number	Diff line number	Diff line
		@@ -1104,8 +1104,10 @@ public class DirectoryFragment extends Fragment implements SwipeRefreshLayout.On
		// Need to plum down into handling the way we do with deleteDocuments.
		closeSelectionBar();
		return true;

		// TODO: Implement extract (to the current directory).
		} else if (isZipNgFlagEnabled() && id == getRes(R.id.dir_menu_extract_here)) {
		transferDocuments(selection, mState.stack, FileOperationService.OPERATION_UNPACK);
		closeSelectionBar();
		return true;
		} else if (id == getRes(R.id.action_menu_extract_to)
		\|\| id == getRes(R.id.option_menu_extract_all)) {
		transferDocuments(selection, null, FileOperationService.OPERATION_EXTRACT);

src/com/android/documentsui/services/FileOperation.java

+3 −3

Original line number	Diff line number	Diff line
		@@ -220,10 +220,10 @@ public abstract class FileOperation implements Parcelable {
		return builder.toString();
		}

		// TODO: Implement
		@Override
		Job createJob(Context service, Job.Listener listener, String id, Features features) {
		throw new UnsupportedOperationException();
		UnpackJob createJob(Context service, Job.Listener listener, String id, Features features) {
		return new UnpackJob(
		service, listener, id, getDestination(), getSrc(), features);
		}

		private UnpackOperation(Parcel in) {

src/com/android/documentsui/services/UnpackJob.kt

0 → 100644

+556 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/
		package com.android.documentsui.services

		import android.app.Notification
		import android.content.Context
		import android.icu.text.MessageFormat
		import android.net.Uri
		import android.os.FileUtils.copy
		import android.os.OperationCanceledException
		import android.os.ParcelFileDescriptor
		import android.os.SystemClock
		import android.provider.DocumentsContract
		import android.text.BidiFormatter
		import android.text.TextUtils
		import android.util.Log
		import com.android.documentsui.DocumentsApplication
		import com.android.documentsui.R
		import com.android.documentsui.archives.ReadableArchive
		import com.android.documentsui.base.DocumentInfo
		import com.android.documentsui.base.DocumentStack
		import com.android.documentsui.base.Features
		import com.android.documentsui.base.SharedMinimal.DEBUG
		import com.android.documentsui.base.SharedMinimal.VERBOSE
		import com.android.documentsui.base.SharedMinimal.redact
		import com.android.documentsui.clipping.UrisSupplier
		import com.android.documentsui.util.FormatUtils
		import com.android.documentsui.util.Material3Config.Companion.getRes
		import com.google.common.io.Files
		import java.io.File
		import java.io.IOException
		import java.io.InputStream
		import java.text.NumberFormat
		import java.util.LinkedList
		import java.util.Locale
		import org.apache.commons.compress.archivers.ArchiveEntry

		/**
		* UnpackJob extracts all the files from a supported archive. It only works on one archive at a
		* time. Given an archive to unpack, it:
		* - Opens the archive
		* - Lists all the entries of the archive
		* - Estimates the number of directories, files and bytes to extract
		* - Checks the free space in the destination directory
		* - Creates a unique extraction directory in the destination directory
		* - Creates all the intermediate directories in the extraction directory
		* - Extracts all the files from the archive
		* - Tracks and reports its own progress
		* - Records file extraction errors
		* - Deletes any partially extracted file in case of error
		* - Handles cancellation gracefully
		*/
		class UnpackJob(
		service: Context,
		listener: Listener,
		id: String,
		destination: DocumentStack,
		srcs: UrisSupplier,
		features: Features
		) : ResolvedResourcesJob(
		service,
		listener,
		id,
		FileOperationService.OPERATION_UNPACK,
		destination,
		srcs,
		features
		) {
		private val dirPathToUri: MutableMap<String, Uri> = mutableMapOf()
		private val tracker = ProgressTracker()
		private val dstInfo: DocumentInfo = destination.peek()
		private var archive: ReadableArchive? = null

		override fun createProgressBuilder(): Notification.Builder {
		return super.createProgressBuilder(
		service.getString(getRes(R.string.extract_notification_title)),
		getRes(R.drawable.ic_menu_extract),
		service.getString(android.R.string.cancel),
		getRes(R.drawable.ic_cab_cancel)
		)
		}

		override fun getSetupNotification(): Notification {
		return getSetupNotification(service.getString(getRes(R.string.extract_preparing)))
		}

		/** This method is called on a different thread than the thread running the extraction. */
		override fun getProgressNotification(): Notification {
		val absoluteProgress: Double
		val absoluteTarget: Double
		val remainingTime: Long

		synchronized(this) {
		absoluteProgress = tracker.absoluteProgress
		absoluteTarget = tracker.absoluteTarget
		remainingTime = tracker.getRemainingTimeEstimate(absoluteProgress, absoluteTarget)
		if (DEBUG) Log.d(TAG, "$tracker, ${remainingTime / 1000} seconds left")
		}

		if (absoluteTarget > 0) {
		val relativeProgress = absoluteProgress / absoluteTarget
		mProgressBuilder.setProgress(100, (relativeProgress * 100).toInt(), false)
		mProgressBuilder.setSubText(NumberFormat.getPercentInstance().format(relativeProgress))
		} else {
		mProgressBuilder.setProgress(100, 0, true)
		mProgressBuilder.setSubText(null)
		}

		mProgressBuilder.setContentText(
		if (remainingTime > 0) {
		service.getString(
		getRes(R.string.copy_remaining),
		FormatUtils.formatDuration(remainingTime)
		)
		} else {
		null
		}
		)

		return mProgressBuilder.build()
		}

		override fun finish() {
		if (DEBUG) Log.d(TAG, "Finished with $tracker")
		archive?.close()
		super.finish()
		}

		override fun getFailureNotification(): Notification {
		return getFailureNotification(
		getRes(R.plurals.copy_error_notification_title),
		getRes(R.drawable.ic_menu_extract)
		)
		}

		/** This method is called on a different thread than the thread running the extraction. */
		@Synchronized
		public override fun getJobProgress(): JobProgress {
		val args: MutableMap<String, Any> = mutableMapOf(
		"directory" to BidiFormatter.getInstance().unicodeWrap(dstInfo.displayName),
		"count" to mResolvedDocs.size,
		)

		if (mResolvedDocs.size == 1) {
		args.put(
		"filename",
		BidiFormatter.getInstance().unicodeWrap(archiveInfo.displayName)
		)
		}

		val message = MessageFormat(
		service.getString(getRes(R.string.extract_in_progress)),
		Locale.getDefault()
		).format(args)

		return JobProgress(
		id,
		operationType,
		state,
		message,
		hasFailures(),
		stack,
		tracker.bytesCopied,
		tracker.bytesRequired,
		tracker.remainingTimeEstimate
		)
		}

		private val resolver = appContext.getContentResolver()

		private val archiveInfo: DocumentInfo
		get() {
		assert(mResolvedDocs.size == 1)
		return mResolvedDocs.first()
		}

		override fun setUp(): Boolean {
		synchronized(this) {
		if (!super.setUp()) return false
		}

		if (DEBUG) Log.d(TAG, "Unpacking ${archiveInfo.derivedUri}")

		try {
		openArchive()
		checkFreeSpace()
		createExtractionDirectory()
		return true
		} catch (_: OperationCanceledException) {
		if (DEBUG) Log.d(TAG, "Canceled unpacking of ${archiveInfo.derivedUri}")
		} catch (t: Throwable) {
		Log.e(TAG, "Cannot unpack ${redact(archiveInfo.derivedUri)}", t)
		synchronized(this) {
		onFileFailed(archiveInfo)
		}
		}

		return false
		}

		private fun createExtractionDirectory() {
		mSignal.throwIfCanceled()

		// Create the extraction directory with the same base name as the archive.
		// This lets the destination document provider deal with name collisions, if necessary.
		val dirName = Files.getNameWithoutExtension(archiveInfo.displayName)
		val dirUri = DocumentsContract.createDocument(
		resolver,
		dstInfo.derivedUri,
		DocumentsContract.Document.MIME_TYPE_DIR,
		dirName
		)

		if (dirUri == null) {
		throw IOException(
		"Cannot create extraction dir ${redact(dirName)} in ${redact(dstInfo.derivedUri)}"
		)
		}

		dirPathToUri.put("/", dirUri)
		val dirInfo = DocumentInfo.fromUri(resolver, dirUri, dstInfo.userId)
		if (VERBOSE) Log.v(TAG, "Created extraction dir ${redact(dirInfo)}")
		stack.push(dirInfo)
		}

		private fun openArchive() {
		mSignal.throwIfCanceled()

		// Open the archive.
		archive = ReadableArchive.createForParcelFileDescriptor(
		appContext,
		resolver.openFileDescriptor(archiveInfo.derivedUri, "r", null),
		archiveInfo.derivedUri,
		archiveInfo.mimeType,
		ParcelFileDescriptor.MODE_READ_ONLY,
		null
		)

		mSignal.throwIfCanceled()

		// Count all the directories to create, all the files to extract, and all the bytes
		// to copy.
		val dirs = mutableSetOf("/")
		for (entry in archive!!.entries) {
		var path = File(ReadableArchive.getEntryPath(entry))

		if (!entry.isDirectory()) {
		// The entry represents a file. Get the path of its containing directory.
		path = path.getParentFile()!!
		synchronized(this) {
		tracker.bytesRequired += entry.getSize()
		tracker.filesRequired++
		}
		}

		while (dirs.add(path.toString())) {
		path = path.getParentFile()!!
		synchronized(this) {
		tracker.dirsRequired++
		}
		}
		}
		}

		override fun start() {
		synchronized(this) {
		tracker.addPoint()
		}

		try {
		// Create all the directories first, to ensure that no directory will be renamed
		// because of a collision with a file name.
		createAllDirectories()
		extractAllFiles()
		} catch (_: OperationCanceledException) {
		if (DEBUG) Log.d(TAG, "Canceled unpacking of ${redact(archiveInfo.derivedUri)}")
		} catch (t: Throwable) {
		Log.e(TAG, "Cannot unpack ${redact(archiveInfo.derivedUri)}", t)
		synchronized(this) {
		onFileFailed(archiveInfo)
		}
		}
		}

		private fun extractAllFiles() {
		for (entry in archive!!.entries) {
		mSignal.throwIfCanceled()
		if (!entry.isDirectory()) processFileEntry(entry)
		}
		}

		private fun createAllDirectories() {
		for (entry in archive!!.entries) {
		mSignal.throwIfCanceled()
		var path = File(ReadableArchive.getEntryPath(entry))
		if (!entry.isDirectory()) path = path.getParentFile()!!
		ensureDirectoryExists(path)
		}
		}

		private fun processFileEntry(entry: ArchiveEntry) {
		val path = File(ReadableArchive.getEntryPath(entry))
		val dirUri = ensureDirectoryExists(path.getParentFile()!!)
		val fileName = path.getName()

		try {
		extractFile(entry, dirUri, fileName)
		} catch (e: OperationCanceledException) {
		// Propagate cancellation request.
		throw e
		} catch (t: Throwable) {
		Log.e(TAG, "Cannot extract ${redact(path)} from ${redact(archiveInfo.derivedUri)}", t)
		synchronized(this) {
		tracker.filesRequired--
		onResolveFailed(Uri.withAppendedPath(dirUri, fileName))
		}
		}

		// Adjust progress expectations after extracting a file.
		synchronized(this) {
		tracker.bytesRequired -= entry.getSize() - tracker.bytesCopiedInCurrentFile
		tracker.bytesCopiedInPreviousFiles += tracker.bytesCopiedInCurrentFile
		tracker.bytesCopiedInCurrentFile = 0
		tracker.addPoint()
		}
		}

		private fun extractFile(entry: ArchiveEntry, dirUri: Uri, fileName: String) {
		// Open input stream serving the archive entry's contents.
		archive!!.getInputStream(entry).use { inputStream ->
		mSignal.throwIfCanceled()
		// Create output file.
		val fileUri = DocumentsContract.createDocument(resolver, dirUri, "", fileName)!!
		if (VERBOSE) Log.v(TAG, "Created file $fileUri")
		try {
		copyFile(inputStream, fileUri)
		} catch (t: Throwable) {
		// Error or cancellation while copying a file.
		deletePartialFile(fileUri)
		throw t
		}
		}
		}

		@Synchronized
		private fun trackBytesInCurrentFile(bytes: Long) {
		tracker.bytesCopiedInCurrentFile = bytes
		tracker.addPoint()
		}

		private fun copyFile(inputStream: InputStream, outputFile: Uri) {
		val client = getClient(outputFile)
		// Open output file for writing.
		try {
		client.openFile(outputFile, "w", mSignal).use { fd ->
		ParcelFileDescriptor.AutoCloseOutputStream(fd).use { outputStream ->
		// Copy bytes.
		val bytes = copy(
		inputStream,
		outputStream,
		mSignal,
		Runnable::run,
		::trackBytesInCurrentFile
		)
		trackBytesInCurrentFile(bytes)
		}
		}
		} finally {
		releaseClient(outputFile)
		}

		synchronized(this) {
		tracker.filesCopied++
		tracker.addPoint()
		}
		}

		private fun deletePartialFile(uri: Uri) {
		try {
		if (DocumentsContract.deleteDocument(resolver, uri)) {
		if (DEBUG) Log.d(TAG, "Deleted partial file ${redact(uri)}")
		} else {
		Log.e(TAG, "Cannot delete partial file ${redact(uri)}")
		}
		} catch (t: Throwable) {
		Log.e(TAG, "Cannot delete partial file ${redact(uri)}", t)
		}
		}

		@Throws(IOException::class)
		private fun ensureDirectoryExists(path: File): Uri {
		val uri = dirPathToUri[path.toString()]
		if (uri != null) return uri

		val parentUri = ensureDirectoryExists(path.getParentFile()!!)
		val name = path.getName()
		if (TextUtils.isEmpty(name)) return parentUri

		mSignal.throwIfCanceled()
		val newDirUri = DocumentsContract.createDocument(
		resolver,
		parentUri,
		DocumentsContract.Document.MIME_TYPE_DIR,
		name
		)

		if (newDirUri == null) {
		throw IOException("Cannot create dir ${redact(name)} in ${redact(parentUri)}")
		}

		if (VERBOSE) Log.v(TAG, "Created dir ${redact(newDirUri)}")
		dirPathToUri.put(path.toString(), newDirUri)

		synchronized(this) {
		tracker.dirsCreated++
		tracker.addPoint()
		}

		return newDirUri
		}

		/** Checks whether the destination directory has enough free space. */
		private fun checkFreeSpace() {
		mSignal.throwIfCanceled()
		val bytesRequired = tracker.bytesRequired
		if (DEBUG) Log.d(TAG, "Need at least $bytesRequired bytes of free space")

		var root = stack.root
		if (root == null) {
		Log.w(TAG, "No root info for destination dir ${redact(dstInfo.derivedUri)}")
		return
		}

		// Query root info again instead of using stack.root because the numbers may be stale.
		root = DocumentsApplication.getProvidersCache(appContext).getRootOneshot(
		root.userId, root.authority, root.rootId, true
		)

		if (root == null \|\| root.availableBytes < 0) {
		Log.w(TAG, "Root $root does not provide its free space amount")
		return
		}

		if (DEBUG) Log.d(TAG, "Root $root has ${root.availableBytes} bytes of free space")

		if (bytesRequired > root.availableBytes) {
		throw IOException(
		"Not enough free space in ${redact(dstInfo.derivedUri)}: " +
		"Need $bytesRequired bytes, " +
		"but only got ${root.availableBytes} bytes of free space"
		)
		}
		}

		override fun toString(): String {
		return "UnpackJob {id=$id, uris=$mResourceUris, docs=$mResolvedDocs, dest=$dstInfo}"
		}

		private class ProgressTracker : Job.ProgressTracker {
		var bytesRequired: Long = 0
		var bytesCopiedInPreviousFiles: Long = 0
		var bytesCopiedInCurrentFile: Long = 0
		var filesRequired = 0
		var filesCopied = 0
		var dirsRequired = 0
		var dirsCreated = 0

		/** A progress sample. */
		private data class Point(val time: Long, val progress: Double)

		/** Circular queue of the most recent progress samples. */
		val points = LinkedList<Point>()

		/** Records a progress sample if the latest one was recorded more than a second ago. */
		fun addPoint() {
		val now = SystemClock.uptimeMillis()
		val last = points.peekLast()
		if (last != null && now - last.time < 1000) return
		points.addLast(Point(now, absoluteProgress))
		// Only keep a handful of the most recent samples.
		while (points.size > 20) points.removeFirst()
		}

		val bytesCopied: Long
		get() = bytesCopiedInPreviousFiles + bytesCopiedInCurrentFile

		val absoluteProgress: Double
		get() = getLinear(dirsCreated, filesCopied, bytesCopied)

		val absoluteTarget: Double
		get() = getLinear(dirsRequired, filesRequired, bytesRequired)

		override fun getProgress(): Double {
		return absoluteProgress / absoluteTarget
		}

		override fun getRemainingTimeEstimate(): Long {
		return getRemainingTimeEstimate(absoluteProgress, absoluteTarget)
		}

		fun getRemainingTimeEstimate(progress: Double, target: Double): Long {
		val first = points.peekFirst()
		if (first == null) return -1
		val now = SystemClock.uptimeMillis()
		val elapsedTime = now - first.time
		val t: Double = elapsedTime * (target - progress) / (progress - first.progress)
		return if (t > 0) t.toLong() else -1
		}

		override fun toString(): String {
		return "Progress %.0f%%, %,d/%,d dirs, %,d/%,d files, %,d/%,d bytes".format(
		progress * 100,
		dirsCreated,
		dirsRequired,
		filesCopied,
		filesRequired,
		bytesCopied,
		bytesRequired
		)
		}

		companion object {
		/**
		* Gets a linear approximation of the time taken to create the given number of
		* directories, create the given number of files and write the given number of bytes.
		* The unit of measure of the returned value is the time taken to write one byte.
		*
		* The constants used in this formula have been empirically determined to
		* approximate a smooth progress tracking with a test device. The time taken to
		* create an empty file and open it for writing matches the time taken to transfer
		* 2.9e6 bytes. The time taken to create a directory matches the time taken to
		* transfer 2.0e7 bytes.
		*/
		private fun getLinear(dirs: Int, files: Int, bytes: Long): Double {
		return bytes.toDouble() + 2.9e6 * files + 2.0e7 * dirs
		}
		}
		}

		companion object {
		private const val TAG = "UnpackJob"
		}
		}