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@@ -0,0 +1,519 @@
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+/* ownCloud Android client application
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+ * Copyright (C) 2012-2014 ownCloud Inc.
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+ *
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+ * This program is free software: you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2,
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+ * as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
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+ *
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+ */
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+
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+package com.owncloud.android.operations;
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+
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+import android.accounts.Account;
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+import android.content.Context;
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+import android.content.Intent;
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+import android.util.Log;
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+
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+import com.owncloud.android.datamodel.FileDataStorageManager;
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+import com.owncloud.android.datamodel.OCFile;
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+import com.owncloud.android.files.services.FileDownloader;
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+import com.owncloud.android.lib.common.OwnCloudClient;
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+import com.owncloud.android.lib.common.operations.RemoteOperation;
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+import com.owncloud.android.lib.common.operations.RemoteOperationResult;
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+import com.owncloud.android.lib.common.operations.RemoteOperationResult.ResultCode;
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+import com.owncloud.android.lib.common.utils.Log_OC;
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+import com.owncloud.android.lib.resources.files.FileUtils;
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+import com.owncloud.android.lib.resources.files.ReadRemoteFileOperation;
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+import com.owncloud.android.lib.resources.files.ReadRemoteFolderOperation;
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+import com.owncloud.android.lib.resources.files.RemoteFile;
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+import com.owncloud.android.lib.resources.shares.GetRemoteSharesForFileOperation;
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+import com.owncloud.android.lib.resources.shares.OCShare;
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+import com.owncloud.android.operations.common.SyncOperation;
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+import com.owncloud.android.syncadapter.FileSyncAdapter;
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+import com.owncloud.android.utils.FileStorageUtils;
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+
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+import org.apache.http.HttpStatus;
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+
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+import java.io.File;
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+import java.io.FileInputStream;
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+import java.io.FileOutputStream;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.io.OutputStream;
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+import java.util.ArrayList;
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+import java.util.HashMap;
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+import java.util.List;
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+import java.util.Map;
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+import java.util.Vector;
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+
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+//import android.support.v4.content.LocalBroadcastManager;
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+
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+
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+/**
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+ * Remote operation performing the synchronization of the list of files contained
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+ * in a folder identified with its remote path.
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+ *
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+ * Fetches the list and properties of the files contained in the given folder, including their
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+ * properties, and updates the local database with them.
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+ *
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+ * Does NOT enter in the child folders to synchronize their contents also.
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+ *
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+ * @author David A. Velasco
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+ */
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+public class SyncFolderOperation extends SyncOperation {
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+
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+ private static final String TAG = SyncFolderOperation.class.getSimpleName();
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+
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+ /** Time stamp for the synchronization process in progress */
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+ private long mCurrentSyncTime;
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+
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+ /** Remote folder to synchronize */
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+ private OCFile mLocalFolder;
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+
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+ /** Access to the local database */
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+ private FileDataStorageManager mStorageManager;
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+
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+ /** Account where the file to synchronize belongs */
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+ private Account mAccount;
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+
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+ /** Android context; necessary to send requests to the download service */
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+ private Context mContext;
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+
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+ /** Files and folders contained in the synchronized folder after a successful operation */
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+ private List<OCFile> mChildren;
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+
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+ /** Counter of conflicts found between local and remote files */
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+ private int mConflictsFound;
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+
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+ /** Counter of failed operations in synchronization of kept-in-sync files */
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+ private int mFailsInFavouritesFound;
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+
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+ /**
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+ * Map of remote and local paths to files that where locally stored in a location
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+ * out of the ownCloud folder and couldn't be copied automatically into it
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+ **/
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+ private Map<String, String> mForgottenLocalFiles;
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+
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+ /** 'True' means that the remote folder changed and should be fetched */
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+ private boolean mRemoteFolderChanged;
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+
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+
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+ /**
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+ * Creates a new instance of {@link SyncFolderOperation}.
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+ *
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+ * @param context Application context.
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+ * @param remotePath Path to synchronize.
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+ * @param account ownCloud account where the folder is located.
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+ * @param currentSyncTime Time stamp for the synchronization process in progress.
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+ */
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+ public SyncFolderOperation(Context context, String remotePath, Account account, long currentSyncTime){
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+ mLocalFolder = new OCFile(remotePath);
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+ mCurrentSyncTime = currentSyncTime;
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+ mStorageManager = getStorageManager();
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+ mAccount = account;
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+ mContext = context;
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+ mForgottenLocalFiles = new HashMap<String, String>();
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+ mRemoteFolderChanged = false;
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+ }
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+
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+
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+ public int getConflictsFound() {
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+ return mConflictsFound;
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+ }
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+
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+ public int getFailsInFavouritesFound() {
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+ return mFailsInFavouritesFound;
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+ }
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+
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+ public Map<String, String> getForgottenLocalFiles() {
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+ return mForgottenLocalFiles;
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+ }
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+
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+ /**
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+ * Returns the list of files and folders contained in the synchronized folder,
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+ * if called after synchronization is complete.
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+ *
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+ * @return List of files and folders contained in the synchronized folder.
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+ */
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+ public List<OCFile> getChildren() {
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+ return mChildren;
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+ }
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+
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+ /**
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+ * Performs the synchronization.
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+ *
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ protected RemoteOperationResult run(OwnCloudClient client) {
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+ RemoteOperationResult result = null;
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+ mFailsInFavouritesFound = 0;
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+ mConflictsFound = 0;
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+ mForgottenLocalFiles.clear();
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+
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+ result = checkForChanges(client);
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+
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+ if (result.isSuccess()) {
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+ if (mRemoteFolderChanged) {
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+ result = fetchAndSyncRemoteFolder(client);
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+ } else {
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+ mChildren = mStorageManager.getFolderContent(mLocalFolder);
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+ }
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+ }
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+
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+ return result;
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+
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+ }
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+
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+ private RemoteOperationResult checkForChanges(OwnCloudClient client) {
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+ mRemoteFolderChanged = true;
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+ RemoteOperationResult result = null;
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+ String remotePath = null;
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+
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+ remotePath = mLocalFolder.getRemotePath();
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+ Log_OC.d(TAG, "Checking changes in " + mAccount.name + remotePath);
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+
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+ // remote request
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+ ReadRemoteFileOperation operation = new ReadRemoteFileOperation(remotePath);
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+ result = operation.execute(client);
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+ if (result.isSuccess()){
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+ OCFile remoteFolder = FileStorageUtils.fillOCFile((RemoteFile) result.getData().get(0));
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+
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+ // check if remote and local folder are different
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+ mRemoteFolderChanged =
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+ !(remoteFolder.getEtag().equalsIgnoreCase(mLocalFolder.getEtag()));
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+
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+ result = new RemoteOperationResult(ResultCode.OK);
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+
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+ Log_OC.i(TAG, "Checked " + mAccount.name + remotePath + " : " +
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+ (mRemoteFolderChanged ? "changed" : "not changed"));
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+
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+ } else {
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+ // check failed
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+ if (result.getCode() == ResultCode.FILE_NOT_FOUND) {
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+ removeLocalFolder();
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+ }
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+ if (result.isException()) {
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+ Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
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+ result.getLogMessage(), result.getException());
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+ } else {
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+ Log_OC.e(TAG, "Checked " + mAccount.name + remotePath + " : " +
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+ result.getLogMessage());
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+ }
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+ }
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+
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+ return result;
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+ }
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+
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+
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+ private RemoteOperationResult fetchAndSyncRemoteFolder(OwnCloudClient client) {
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+ String remotePath = mLocalFolder.getRemotePath();
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+ ReadRemoteFolderOperation operation = new ReadRemoteFolderOperation(remotePath);
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+ RemoteOperationResult result = operation.execute(client);
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+ Log_OC.d(TAG, "Synchronizing " + mAccount.name + remotePath);
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+
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+ if (result.isSuccess()) {
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+ synchronizeData(result.getData(), client);
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+ if (mConflictsFound > 0 || mFailsInFavouritesFound > 0) {
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+ result = new RemoteOperationResult(ResultCode.SYNC_CONFLICT);
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+ // should be a different result code, but will do the job
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+ }
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+ } else {
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+ if (result.getCode() == ResultCode.FILE_NOT_FOUND)
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+ removeLocalFolder();
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+ }
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+
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+ return result;
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+ }
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+
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+
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+ private void removeLocalFolder() {
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+ if (mStorageManager.fileExists(mLocalFolder.getFileId())) {
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+ String currentSavePath = FileStorageUtils.getSavePath(mAccount.name);
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+ mStorageManager.removeFolder(
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+ mLocalFolder,
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+ true,
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+ ( mLocalFolder.isDown() &&
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+ mLocalFolder.getStoragePath().startsWith(currentSavePath)
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+ )
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+ );
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+ }
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+ }
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+
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+
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+ /**
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+ * Synchronizes the data retrieved from the server about the contents of the target folder
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+ * with the current data in the local database.
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+ *
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+ * Grants that mChildren is updated with fresh data after execution.
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+ *
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+ * @param folderAndFiles Remote folder and children files in Folder
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+ *
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+ * @param client Client instance to the remote server where the data were
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+ * retrieved.
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+ * @return 'True' when any change was made in the local data, 'false' otherwise
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+ */
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+ private void synchronizeData(ArrayList<Object> folderAndFiles, OwnCloudClient client) {
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+ // get 'fresh data' from the database
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+ mLocalFolder = mStorageManager.getFileByPath(mLocalFolder.getRemotePath());
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+
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+ // parse data from remote folder
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+ OCFile remoteFolder = fillOCFile((RemoteFile)folderAndFiles.get(0));
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+ remoteFolder.setParentId(mLocalFolder.getParentId());
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+ remoteFolder.setFileId(mLocalFolder.getFileId());
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+
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+ Log_OC.d(TAG, "Remote folder " + mLocalFolder.getRemotePath()
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+ + " changed - starting update of local data ");
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+
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+ List<OCFile> updatedFiles = new Vector<OCFile>(folderAndFiles.size() - 1);
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+ List<SynchronizeFileOperation> filesToSyncContents = new Vector<SynchronizeFileOperation>();
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+
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+ // get current data about local contents of the folder to synchronize
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+ List<OCFile> localFiles = mStorageManager.getFolderContent(mLocalFolder);
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+ Map<String, OCFile> localFilesMap = new HashMap<String, OCFile>(localFiles.size());
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+ for (OCFile file : localFiles) {
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+ localFilesMap.put(file.getRemotePath(), file);
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+ }
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+
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+ // loop to update every child
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+ OCFile remoteFile = null, localFile = null;
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+ for (int i=1; i<folderAndFiles.size(); i++) {
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+ /// new OCFile instance with the data from the server
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+ remoteFile = fillOCFile((RemoteFile)folderAndFiles.get(i));
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+ remoteFile.setParentId(mLocalFolder.getFileId());
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+
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+ /// retrieve local data for the read file
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+ // localFile = mStorageManager.getFileByPath(remoteFile.getRemotePath());
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+ localFile = localFilesMap.remove(remoteFile.getRemotePath());
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+
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+ /// add to the remoteFile (the new one) data about LOCAL STATE (not existing in server)
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+ remoteFile.setLastSyncDateForProperties(mCurrentSyncTime);
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+ if (localFile != null) {
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+ // some properties of local state are kept unmodified
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+ remoteFile.setFileId(localFile.getFileId());
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+ remoteFile.setKeepInSync(localFile.keepInSync());
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+ remoteFile.setLastSyncDateForData(localFile.getLastSyncDateForData());
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+ remoteFile.setModificationTimestampAtLastSyncForData(
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+ localFile.getModificationTimestampAtLastSyncForData()
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+ );
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+ remoteFile.setStoragePath(localFile.getStoragePath());
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+ // eTag will not be updated unless contents are synchronized
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+ // (Synchronize[File|Folder]Operation with remoteFile as parameter)
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+ remoteFile.setEtag(localFile.getEtag());
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+ if (remoteFile.isFolder()) {
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+ remoteFile.setFileLength(localFile.getFileLength());
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+ // TODO move operations about size of folders to FileContentProvider
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+ } else if (mRemoteFolderChanged && remoteFile.isImage() &&
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+ remoteFile.getModificationTimestamp() != localFile.getModificationTimestamp()) {
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+ remoteFile.setNeedsUpdateThumbnail(true);
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+ Log.d(TAG, "Image " + remoteFile.getFileName() + " updated on the server");
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+ }
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+ remoteFile.setPublicLink(localFile.getPublicLink());
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+ remoteFile.setShareByLink(localFile.isShareByLink());
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+ } else {
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+ // remote eTag will not be updated unless contents are synchronized
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+ // (Synchronize[File|Folder]Operation with remoteFile as parameter)
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+ remoteFile.setEtag("");
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+ }
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+
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+ /// check and fix, if needed, local storage path
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+ checkAndFixForeignStoragePath(remoteFile); // policy - local files are COPIED
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+ // into the ownCloud local folder;
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+ searchForLocalFileInDefaultPath(remoteFile); // legacy
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+
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+ /// prepare content synchronization for kept-in-sync files
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+ if (remoteFile.keepInSync()) {
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+ SynchronizeFileOperation operation = new SynchronizeFileOperation( localFile,
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+ remoteFile,
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+ mAccount,
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+ true,
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+ mContext
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+ );
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+
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+ filesToSyncContents.add(operation);
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+ }
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+
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+ // Start the download of all the files in the folder (non recursively)
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+ if (!remoteFile.isFolder()) {
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+ requestForDownloadFile(remoteFile);
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+ }
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+
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+ updatedFiles.add(remoteFile);
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+ }
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+
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+ // save updated contents in local database
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+ mStorageManager.saveFolder(remoteFolder, updatedFiles, localFilesMap.values());
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+
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+ // request for the synchronization of file contents AFTER saving current remote properties
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+ startContentSynchronizations(filesToSyncContents, client);
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+
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+ mChildren = updatedFiles;
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+ }
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+
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+ /**
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+ * Performs a list of synchronization operations, determining if a download or upload is needed
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+ * or if exists conflict due to changes both in local and remote contents of the each file.
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+ *
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+ * If download or upload is needed, request the operation to the corresponding service and goes
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+ * on.
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+ *
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+ * @param filesToSyncContents Synchronization operations to execute.
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+ * @param client Interface to the remote ownCloud server.
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+ */
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+ private void startContentSynchronizations(
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+ List<SynchronizeFileOperation> filesToSyncContents, OwnCloudClient client
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+ ) {
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+ RemoteOperationResult contentsResult = null;
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+ for (SynchronizeFileOperation op: filesToSyncContents) {
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+ contentsResult = op.execute(mStorageManager, mContext); // async
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+ if (!contentsResult.isSuccess()) {
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+ if (contentsResult.getCode() == ResultCode.SYNC_CONFLICT) {
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+ mConflictsFound++;
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+ } else {
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+ mFailsInFavouritesFound++;
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+ if (contentsResult.getException() != null) {
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+ Log_OC.e(TAG, "Error while synchronizing favourites : "
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+ + contentsResult.getLogMessage(), contentsResult.getException());
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+ } else {
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+ Log_OC.e(TAG, "Error while synchronizing favourites : "
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+ + contentsResult.getLogMessage());
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+ }
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+ }
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+ } // won't let these fails break the synchronization process
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+ }
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+ }
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+
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+
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+ public boolean isMultiStatus(int status) {
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+ return (status == HttpStatus.SC_MULTI_STATUS);
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+ }
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+
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+ /**
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+ * Creates and populates a new {@link com.owncloud.android.datamodel.OCFile} object with the data read from the server.
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+ *
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+ * @param remote remote file read from the server (remote file or folder).
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+ * @return New OCFile instance representing the remote resource described by we.
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+ */
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+ private OCFile fillOCFile(RemoteFile remote) {
|
|
|
+ OCFile file = new OCFile(remote.getRemotePath());
|
|
|
+ file.setCreationTimestamp(remote.getCreationTimestamp());
|
|
|
+ file.setFileLength(remote.getLength());
|
|
|
+ file.setMimetype(remote.getMimeType());
|
|
|
+ file.setModificationTimestamp(remote.getModifiedTimestamp());
|
|
|
+ file.setEtag(remote.getEtag());
|
|
|
+ file.setPermissions(remote.getPermissions());
|
|
|
+ file.setRemoteId(remote.getRemoteId());
|
|
|
+ return file;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Checks the storage path of the OCFile received as parameter.
|
|
|
+ * If it's out of the local ownCloud folder, tries to copy the file inside it.
|
|
|
+ *
|
|
|
+ * If the copy fails, the link to the local file is nullified. The account of forgotten
|
|
|
+ * files is kept in {@link #mForgottenLocalFiles}
|
|
|
+ *)
|
|
|
+ * @param file File to check and fix.
|
|
|
+ */
|
|
|
+ private void checkAndFixForeignStoragePath(OCFile file) {
|
|
|
+ String storagePath = file.getStoragePath();
|
|
|
+ String expectedPath = FileStorageUtils.getDefaultSavePathFor(mAccount.name, file);
|
|
|
+ if (storagePath != null && !storagePath.equals(expectedPath)) {
|
|
|
+ /// fix storagePaths out of the local ownCloud folder
|
|
|
+ File originalFile = new File(storagePath);
|
|
|
+ if (FileStorageUtils.getUsableSpace(mAccount.name) < originalFile.length()) {
|
|
|
+ mForgottenLocalFiles.put(file.getRemotePath(), storagePath);
|
|
|
+ file.setStoragePath(null);
|
|
|
+
|
|
|
+ } else {
|
|
|
+ InputStream in = null;
|
|
|
+ OutputStream out = null;
|
|
|
+ try {
|
|
|
+ File expectedFile = new File(expectedPath);
|
|
|
+ File expectedParent = expectedFile.getParentFile();
|
|
|
+ expectedParent.mkdirs();
|
|
|
+ if (!expectedParent.isDirectory()) {
|
|
|
+ throw new IOException(
|
|
|
+ "Unexpected error: parent directory could not be created"
|
|
|
+ );
|
|
|
+ }
|
|
|
+ expectedFile.createNewFile();
|
|
|
+ if (!expectedFile.isFile()) {
|
|
|
+ throw new IOException("Unexpected error: target file could not be created");
|
|
|
+ }
|
|
|
+ in = new FileInputStream(originalFile);
|
|
|
+ out = new FileOutputStream(expectedFile);
|
|
|
+ byte[] buf = new byte[1024];
|
|
|
+ int len;
|
|
|
+ while ((len = in.read(buf)) > 0){
|
|
|
+ out.write(buf, 0, len);
|
|
|
+ }
|
|
|
+ file.setStoragePath(expectedPath);
|
|
|
+
|
|
|
+ } catch (Exception e) {
|
|
|
+ Log_OC.e(TAG, "Exception while copying foreign file " + expectedPath, e);
|
|
|
+ mForgottenLocalFiles.put(file.getRemotePath(), storagePath);
|
|
|
+ file.setStoragePath(null);
|
|
|
+
|
|
|
+ } finally {
|
|
|
+ try {
|
|
|
+ if (in != null) in.close();
|
|
|
+ } catch (Exception e) {
|
|
|
+ Log_OC.d(TAG, "Weird exception while closing input stream for "
|
|
|
+ + storagePath + " (ignoring)", e);
|
|
|
+ }
|
|
|
+ try {
|
|
|
+ if (out != null) out.close();
|
|
|
+ } catch (Exception e) {
|
|
|
+ Log_OC.d(TAG, "Weird exception while closing output stream for "
|
|
|
+ + expectedPath + " (ignoring)", e);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Scans the default location for saving local copies of files searching for
|
|
|
+ * a 'lost' file with the same full name as the {@link com.owncloud.android.datamodel.OCFile} received as
|
|
|
+ * parameter.
|
|
|
+ *
|
|
|
+ * @param file File to associate a possible 'lost' local file.
|
|
|
+ */
|
|
|
+ private void searchForLocalFileInDefaultPath(OCFile file) {
|
|
|
+ if (file.getStoragePath() == null && !file.isFolder()) {
|
|
|
+ File f = new File(FileStorageUtils.getDefaultSavePathFor(mAccount.name, file));
|
|
|
+ if (f.exists()) {
|
|
|
+ file.setStoragePath(f.getAbsolutePath());
|
|
|
+ file.setLastSyncDateForData(f.lastModified());
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Requests for a download to the FileDownloader service
|
|
|
+ *
|
|
|
+ * @param file OCFile object representing the file to download
|
|
|
+ */
|
|
|
+ private void requestForDownloadFile(OCFile file) {
|
|
|
+ Intent i = new Intent(mContext, FileDownloader.class);
|
|
|
+ i.putExtra(FileDownloader.EXTRA_ACCOUNT, mAccount);
|
|
|
+ i.putExtra(FileDownloader.EXTRA_FILE, file);
|
|
|
+ mContext.startService(i);
|
|
|
+ }
|
|
|
+
|
|
|
+ public boolean getRemoteFolderChanged() {
|
|
|
+ return mRemoteFolderChanged;
|
|
|
+ }
|
|
|
+
|
|
|
+}
|
David A. Velasco