org.syncany.operations.down.actions.RenameFileSystemAction.java Source code

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Here is the source code for org.syncany.operations.down.actions.RenameFileSystemAction.java

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/*
 * Syncany, www.syncany.org
 * Copyright (C) 2011-2015 Philipp C. Heckel <philipp.heckel@gmail.com> 
 *
 * 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.syncany.operations.down.actions;

import java.io.File;
import java.util.logging.Level;

import org.apache.commons.io.FileUtils;
import org.syncany.config.Config;
import org.syncany.database.FileVersion;
import org.syncany.database.MemoryDatabase;
import org.syncany.util.FileUtil;

public class RenameFileSystemAction extends FileSystemAction {
    public RenameFileSystemAction(Config config, FileVersion from, FileVersion to, MemoryDatabase winningDatabase) {
        super(config, winningDatabase, from, to);
    }

    @Override
    public FileSystemActionResult execute() throws Exception {
        File fromFileOnDisk = getAbsolutePathFile(fileVersion1.getPath());
        File targetFileOnDisk = getAbsolutePathFile(fileVersion2.getPath());

        boolean fromFileExists = FileUtil.exists(fromFileOnDisk);
        boolean targetFileExists = FileUtil.exists(targetFileOnDisk);

        boolean fileRenamed = !targetFileOnDisk.equals(fromFileOnDisk);

        if (fileRenamed) {
            if (fromFileExists && !targetFileExists) {
                if (fileAsExpected(fileVersion1)) { // << Expected case!
                    logger.log(Level.INFO,
                            "     - (1) Renaming file " + fromFileOnDisk + " to " + targetFileOnDisk + " ...");
                    targetFileOnDisk = moveFileToFinalLocation(fromFileOnDisk, fileVersion2);
                } else {
                    logger.log(Level.INFO, "     - (2) Source file differs from what we expected.");
                    throw new Exception("Source file differs from what we expected.");
                }
            } else if (fromFileExists && targetFileExists) {
                if (fileAsExpected(fileVersion1)) {
                    if (fileAsExpected(fileVersion2)) {
                        logger.log(Level.INFO,
                                "     - (3) File at destination is what was expected. Nothing to do for "
                                        + targetFileOnDisk + " ...");
                    } else {
                        logger.log(Level.INFO, "     - (4) File at destination differs, creating conflict file for "
                                + targetFileOnDisk + " ...");

                        moveToConflictFile(fileVersion2);
                        FileUtils.moveFile(fromFileOnDisk, targetFileOnDisk);
                    }
                } else {
                    logger.log(Level.INFO, "     - (5) Cannot rename because orig. file does not exist.");
                    throw new Exception("Cannot rename because orig. file does not exist");
                }
            } else if (!fromFileExists && !targetFileExists) {
                logger.log(Level.INFO, "     - (6) Cannot rename because orig. file does not exist.");
                throw new Exception("Cannot rename because orig. file does not exist");
            } else if (!fromFileExists && targetFileExists) {
                if (fileAsExpected(fileVersion2)) {
                    logger.log(Level.INFO, "     - (7) File at destination is what was expected. Nothing to do for "
                            + targetFileOnDisk + " ...");
                } else {
                    logger.log(Level.INFO, "     - (8) Cannot rename because orig. file does not exist.");
                    throw new Exception("Cannot rename because orig. file does not exist");
                }
            }
        }

        // Set attributes
        setFileAttributes(fileVersion2, targetFileOnDisk); // TODO [low] check for fileAsExpected
        setLastModified(fileVersion2, targetFileOnDisk);

        return new FileSystemActionResult();
    }

    @Override
    public String toString() {
        return "RenameFileSystemAction [file1=" + fileVersion1 + ", file2=" + fileVersion2 + "]";
    }

}