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@ -49,71 +49,70 @@ object ShareFileHelper : libtailscale.ShareFileHelper {
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return file.uri.toString() to os
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}
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private fun openWriterFD(fileName: String, offset: Long): Pair<String, SeekableOutputStream?> {
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val ctx = appContext ?: return "" to null
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val dirUri = savedUri ?: return "" to null
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val dir = DocumentFile.fromTreeUri(ctx, Uri.parse(dirUri)) ?: return "" to null
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// Reuse existing doc if it exists
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@Throws(IOException::class)
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private fun openWriterFD(fileName: String, offset: Long): Pair<String, SeekableOutputStream> {
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val ctx = appContext ?: throw IOException("App context not initialized")
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val dirUri = savedUri ?: throw IOException("No directory URI")
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val dir =
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DocumentFile.fromTreeUri(ctx, Uri.parse(dirUri))
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?: throw IOException("Invalid tree URI: $dirUri")
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val file =
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dir.findFile(fileName)
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?: dir.createFile("application/octet-stream", fileName)
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?: return "" to null
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?: throw IOException("Failed to create file: $fileName")
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// Always get a ParcelFileDescriptor so we can sync
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val pfd = ctx.contentResolver.openFileDescriptor(file.uri, "rw") ?: return "" to null
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val pfd =
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ctx.contentResolver.openFileDescriptor(file.uri, "rw")
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?: throw IOException("Failed to open file descriptor for ${file.uri}")
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val fos = FileOutputStream(pfd.fileDescriptor)
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if (offset != 0L) fos.channel.position(offset) else fos.channel.truncate(0)
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return file.uri.toString() to SeekableOutputStream(fos, pfd)
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}
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private val currentUri = ConcurrentHashMap<String, String>()
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override fun openFileWriter(fileName: String): libtailscale.OutputStream {
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val (uri, stream) = openWriterFD(fileName, 0)
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currentUri[fileName] = uri // 🠚 cache the exact doc we opened
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return OutputStreamAdapter(stream ?: OutputStream.nullOutputStream())
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}
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override fun openFileWriterAt(fileName: String, offset: Long): libtailscale.OutputStream {
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@Throws(IOException::class)
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override fun openFileWriter(fileName: String, offset: Long): libtailscale.OutputStream {
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val (uri, stream) = openWriterFD(fileName, offset)
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if (stream == null) {
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throw IOException("Failed to open file writer for $fileName")
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}
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currentUri[fileName] = uri
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return OutputStreamAdapter(stream ?: OutputStream.nullOutputStream())
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return OutputStreamAdapter(stream)
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}
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override fun openFileURI(fileName: String): String {
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@Throws(IOException::class)
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override fun getFileURI(fileName: String): String {
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currentUri[fileName]?.let {
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return it
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}
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val ctx = appContext ?: return ""
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val dirStr = savedUri ?: return ""
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val dir = DocumentFile.fromTreeUri(ctx, Uri.parse(dirStr)) ?: return ""
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val file = dir.findFile(fileName) ?: return ""
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val uri = file.uri.toString()
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val ctx = appContext ?: throw IOException("App context not initialized")
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val dirStr = savedUri ?: throw IOException("No saved directory URI")
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val dir =
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DocumentFile.fromTreeUri(ctx, Uri.parse(dirStr))
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?: throw IOException("Invalid tree URI: $dirStr")
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val file = dir.findFile(fileName) ?: throw IOException("File not found: $fileName")
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val uri = file.uri.toString()
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currentUri[fileName] = uri
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return uri
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}
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override fun renamePartialFile(
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partialUri: String,
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targetDirUri: String,
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targetName: String
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): String {
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@Throws(IOException::class)
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override fun renameFile(oldPath: String, targetName: String): String {
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val ctx = appContext ?: throw IOException("not initialized")
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val srcUri = Uri.parse(partialUri)
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val dirUri = savedUri ?: throw IOException("directory not set")
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val srcUri = Uri.parse(oldPath)
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val dir =
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DocumentFile.fromTreeUri(ctx, Uri.parse(targetDirUri))
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?: throw IOException("cannot open dir $targetDirUri")
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DocumentFile.fromTreeUri(ctx, Uri.parse(dirUri))
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?: throw IOException("cannot open dir $dirUri")
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var finalName = targetName
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dir.findFile(finalName)?.let { existing ->
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if (lengthOfUri(ctx, existing.uri) == 0L) {
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existing.delete() // remove stale 0‑byte file
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existing.delete()
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} else {
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finalName = generateNewFilename(finalName)
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}
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@ -125,11 +124,11 @@ object ShareFileHelper : libtailscale.ShareFileHelper {
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cleanupPartials(dir, targetName)
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return newUri.toString()
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}
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} catch (_: Exception) {
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// rename not supported; fall through to copy‑delete
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} catch (e: Exception) {
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TSLog.w("renameFile", "renameDocument fallback triggered for $srcUri -> $finalName: ${e.message}")
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}
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// fallback - copy contents then delete source
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val dest =
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dir.createFile("application/octet-stream", finalName)
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?: throw IOException("createFile failed for $finalName")
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@ -143,7 +142,7 @@ object ShareFileHelper : libtailscale.ShareFileHelper {
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inp.copyTo(out)
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}
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}
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// delete the original .partial
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ctx.contentResolver.delete(srcUri, null, null)
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cleanupPartials(dir, targetName)
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return dest.uri.toString()
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@ -163,33 +162,35 @@ object ShareFileHelper : libtailscale.ShareFileHelper {
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}
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@Throws(IOException::class)
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override fun deleteFile(uriString: String) {
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override fun deleteFile(uri: String) {
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val ctx = appContext ?: throw IOException("DeleteFile: not initialized")
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val uri = Uri.parse(uriString)
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val uri = Uri.parse(uri)
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val doc =
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DocumentFile.fromSingleUri(ctx, uri)
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?: throw IOException("DeleteFile: cannot resolve URI $uriString")
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?: throw IOException("DeleteFile: cannot resolve URI $uri")
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if (!doc.delete()) {
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throw IOException("DeleteFile: delete() returned false for $uriString")
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throw IOException("DeleteFile: delete() returned false for $uri")
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}
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}
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override fun treeURI(): String = savedUri ?: throw IllegalStateException("not initialized")
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@Throws(IOException::class)
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override fun getFileInfo(fileName: String): String {
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val context = appContext ?: return ""
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val dirUri = savedUri ?: return ""
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val dir = DocumentFile.fromTreeUri(context, Uri.parse(dirUri)) ?: return ""
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val context = appContext ?: throw IOException("app context not initialized")
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val dirUri = savedUri ?: throw IOException("SAF URI not initialized")
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val dir =
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DocumentFile.fromTreeUri(context, Uri.parse(dirUri))
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?: throw IOException("could not resolve SAF root")
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val file = dir.findFile(fileName) ?: return ""
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val file =
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dir.findFile(fileName) ?: throw IOException("file \"$fileName\" not found in SAF directory")
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val name = file.name ?: return ""
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val name = file.name ?: throw IOException("file name missing for $fileName")
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val size = file.length()
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val modTime = file.lastModified() // milliseconds since epoch
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val modTime = file.lastModified()
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return """{"name":${jsonEscape(name)},"size":$size,"modTime":$modTime}"""
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return """{"name":${JSONObject.quote(name)},"size":$size,"modTime":$modTime}"""
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}
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private fun jsonEscape(s: String): String {
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@ -216,71 +217,66 @@ object ShareFileHelper : libtailscale.ShareFileHelper {
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.toTypedArray()
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}
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override fun listPartialFilesJSON(suffix: String): String {
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return listPartialFiles(suffix)
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.joinToString(prefix = "[\"", separator = "\",\"", postfix = "\"]")
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@Throws(IOException::class)
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override fun listFilesJSON(suffix: String): String {
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val list = listPartialFiles(suffix)
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if (list.isEmpty()) {
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throw IOException("no files found matching suffix \"$suffix\"")
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}
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return list.joinToString(prefix = "[\"", separator = "\",\"", postfix = "\"]")
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}
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override fun openPartialFileReader(name: String): libtailscale.InputStream? {
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val context = appContext ?: return null
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val rootUri = savedUri ?: return null
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val dir = DocumentFile.fromTreeUri(context, Uri.parse(rootUri)) ?: return null
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@Throws(IOException::class)
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override fun openFileReader(name: String): libtailscale.InputStream {
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val context = appContext ?: throw IOException("app context not initialized")
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val rootUri = savedUri ?: throw IOException("SAF URI not initialized")
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val dir =
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DocumentFile.fromTreeUri(context, Uri.parse(rootUri))
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?: throw IOException("could not open SAF root")
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// We know `name` includes the suffix (e.g. ".<id>.partial"), but the actual
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// file in SAF might include extra bits, so let's just match by that suffix.
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// You could also match exactly `endsWith(name)` if the filenames line up
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val suffix = name.substringAfterLast('.', ".$name") // or hard-code ".partial"
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val suffix = name.substringAfterLast('.', ".$name")
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val file =
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dir.listFiles().firstOrNull {
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val fname = it.name ?: return@firstOrNull false
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// call the String overload explicitly:
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fname.endsWith(suffix, /*ignoreCase=*/ false)
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}
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?: run {
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TSLog.d("ShareFileHelper", "no file ending with $suffix in SAF directory")
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return null
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}
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fname.endsWith(suffix, ignoreCase = false)
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} ?: throw IOException("no file ending with \"$suffix\" in SAF directory")
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TSLog.d("ShareFileHelper", "found SAF file ${file.name}, opening")
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val inStream =
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context.contentResolver.openInputStream(file.uri)
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?: run {
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TSLog.d("ShareFileHelper", "openInputStream returned null for ${file.uri}")
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return null
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}
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?: throw IOException("openInputStream returned null for ${file.uri}")
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return InputStreamAdapter(inStream)
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}
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}
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private class SeekableOutputStream(
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private val fos: FileOutputStream,
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private val pfd: ParcelFileDescriptor
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) : OutputStream() {
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private class SeekableOutputStream(
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private val fos: FileOutputStream,
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private val pfd: ParcelFileDescriptor
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) : OutputStream() {
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private var closed = false
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private var closed = false
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override fun write(b: Int) = fos.write(b)
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override fun write(b: Int) = fos.write(b)
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override fun write(b: ByteArray) = fos.write(b)
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override fun write(b: ByteArray) = fos.write(b)
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override fun write(b: ByteArray, off: Int, len: Int) {
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fos.write(b, off, len)
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}
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override fun write(b: ByteArray, off: Int, len: Int) {
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fos.write(b, off, len)
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}
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override fun close() {
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if (!closed) {
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closed = true
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try {
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fos.flush()
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fos.fd.sync() // blocks until data + metadata are durable
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val size = fos.channel.size()
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} finally {
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fos.close()
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pfd.close()
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override fun close() {
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if (!closed) {
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closed = true
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try {
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fos.flush()
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fos.fd.sync() // blocks until data + metadata are durable
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} finally {
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fos.close()
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pfd.close()
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}
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}
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}
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}
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override fun flush() = fos.flush()
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override fun flush() = fos.flush()
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}
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}
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kari-ts
4 months ago