Android: Fix various issues with the DocumentProvider

Fixes copying & deleting folders and copy conflict handling.
This commit is contained in:
Robin Kertels 2023-04-08 15:55:50 +02:00
parent 1596b13743
commit 57ed5320b5
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GPG Key ID: 3824904F14D40757
1 changed files with 25 additions and 55 deletions

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@ -54,7 +54,6 @@ class DocumentProvider : DocumentsProvider() {
override fun queryRoots(projection: Array<String>?): Cursor { override fun queryRoots(projection: Array<String>?): Cursor {
val result = MatrixCursor(projection ?: DEFAULT_ROOT_PROJECTION) val result = MatrixCursor(projection ?: DEFAULT_ROOT_PROJECTION)
rootDirectory = rootDirectory ?: DirectoryInitialization.getUserDirectoryPath(context)
rootDirectory ?: return result rootDirectory ?: return result
result.newRow().apply { result.newRow().apply {
@ -73,7 +72,6 @@ class DocumentProvider : DocumentsProvider() {
override fun queryDocument(documentId: String, projection: Array<String>?): Cursor { override fun queryDocument(documentId: String, projection: Array<String>?): Cursor {
val result = MatrixCursor(projection ?: DEFAULT_DOCUMENT_PROJECTION) val result = MatrixCursor(projection ?: DEFAULT_DOCUMENT_PROJECTION)
rootDirectory = rootDirectory ?: DirectoryInitialization.getUserDirectoryPath(context)
rootDirectory ?: return result rootDirectory ?: return result
val file = documentIdToPath(documentId) val file = documentIdToPath(documentId)
appendDocument(file, result) appendDocument(file, result)
@ -102,7 +100,9 @@ class DocumentProvider : DocumentsProvider() {
documentId: String, documentId: String,
mode: String, mode: String,
signal: CancellationSignal? signal: CancellationSignal?
): ParcelFileDescriptor { ): ParcelFileDescriptor? {
rootDirectory ?: return null
val file = documentIdToPath(documentId) val file = documentIdToPath(documentId)
return ParcelFileDescriptor.open(file, ParcelFileDescriptor.parseMode(mode)) return ParcelFileDescriptor.open(file, ParcelFileDescriptor.parseMode(mode))
} }
@ -111,7 +111,9 @@ class DocumentProvider : DocumentsProvider() {
parentDocumentId: String, parentDocumentId: String,
mimeType: String, mimeType: String,
displayName: String displayName: String
): String { ): String? {
rootDirectory ?: return null
val folder = documentIdToPath(parentDocumentId) val folder = documentIdToPath(parentDocumentId)
val file = findFileNameForNewFile(File(folder, displayName)) val file = findFileNameForNewFile(File(folder, displayName))
if (mimeType == DocumentsContract.Document.MIME_TYPE_DIR) { if (mimeType == DocumentsContract.Document.MIME_TYPE_DIR) {
@ -122,52 +124,36 @@ class DocumentProvider : DocumentsProvider() {
return pathToDocumentId(file) return pathToDocumentId(file)
} }
override fun copyDocument(sourceDocumentId: String, targetParentDocumentId: String): String { override fun deleteDocument(documentId: String) {
val file = documentIdToPath(sourceDocumentId) rootDirectory ?: return
val target = documentIdToPath(targetParentDocumentId)
val copy = copyRecursively(file, File(target, file.name))
return pathToDocumentId(copy)
}
override fun removeDocument(documentId: String, parentDocumentId: String) {
val file = documentIdToPath(documentId) val file = documentIdToPath(documentId)
file.deleteRecursively() file.deleteRecursively()
} }
override fun moveDocument( override fun renameDocument(documentId: String, displayName: String): String? {
sourceDocumentId: String, rootDirectory ?: return null
sourceParentDocumentId: String,
targetParentDocumentId: String val file = documentIdToPath(documentId)
): String { val dest = findFileNameForNewFile(File(file.parentFile, displayName))
val copy = copyDocument(sourceDocumentId, targetParentDocumentId) file.renameTo(dest)
val file = documentIdToPath(sourceDocumentId) return pathToDocumentId(dest)
file.delete()
return copy
} }
override fun renameDocument(documentId: String, displayName: String): String { override fun isChildDocument(parentDocumentId: String, documentId: String): Boolean
val file = documentIdToPath(documentId) = documentId.startsWith(parentDocumentId)
file.renameTo(findFileNameForNewFile(File(file.parentFile, displayName)))
return pathToDocumentId(file)
}
override fun isChildDocument(parentDocumentId: String, documentId: String): Boolean {
val file = documentIdToPath(documentId)
val folder = documentIdToPath(parentDocumentId)
return file.relativeToOrNull(folder) != null
}
private fun appendDocument(file: File, cursor: MatrixCursor) { private fun appendDocument(file: File, cursor: MatrixCursor) {
var flags = 0 var flags = 0
if (file.isDirectory && file.canWrite()) { if (file.canWrite()) {
flags = DocumentsContract.Document.FLAG_DIR_SUPPORTS_CREATE flags = if (file.isDirectory) {
} else if (file.canWrite()) { DocumentsContract.Document.FLAG_DIR_SUPPORTS_CREATE
flags = DocumentsContract.Document.FLAG_SUPPORTS_WRITE } else {
DocumentsContract.Document.FLAG_SUPPORTS_WRITE
}
flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_DELETE flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_DELETE
flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_REMOVE
flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_MOVE
flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_COPY
flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_RENAME flags = flags or DocumentsContract.Document.FLAG_SUPPORTS_RENAME
// The system will handle copy + move for us
} }
val name = if (file == rootDirectory) { val name = if (file == rootDirectory) {
@ -217,22 +203,6 @@ class DocumentProvider : DocumentsProvider() {
unusedFile = File("$pathWithoutExtension.$i.$extension") unusedFile = File("$pathWithoutExtension.$i.$extension")
i++ i++
} }
return file return unusedFile
}
private fun copyRecursively(src: File, dst: File): File {
val actualDst = findFileNameForNewFile(dst)
if (src.isDirectory) {
actualDst.mkdirs()
val children = src.listFiles()
if (children !== null) {
for (file in children) {
copyRecursively(file, File(actualDst, file.name))
}
}
} else {
src.copyTo(actualDst)
}
return actualDst
} }
} }