org.springframework.integration.file.remote.RemoteFileUtils.java Source code

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Here is the source code for org.springframework.integration.file.remote.RemoteFileUtils.java

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/*
 * Copyright 2002-2019 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.integration.file.remote;

import java.io.IOException;
import java.util.LinkedList;
import java.util.List;

import org.apache.commons.logging.Log;

import org.springframework.integration.file.remote.session.Session;

/**
 * Utility methods for supporting remote file operations.
 * @author Gary Russell
 * @since 3.0
 *
 */
public final class RemoteFileUtils {

    private RemoteFileUtils() {
        super();
    }

    /**
     * Recursively create remote directories.
     * @param <F> The session type.
     * @param path The directory path.
     * @param session The session.
     * @param remoteFileSeparator The remote file separator.
     * @param logger The logger.
     * @throws IOException Any IOException.
     */
    public static synchronized <F> void makeDirectories(String path, Session<F> session, String remoteFileSeparator,
            Log logger) throws IOException {

        if (!session.exists(path)) {

            int nextSeparatorIndex = path.lastIndexOf(remoteFileSeparator);

            if (nextSeparatorIndex > -1) {
                List<String> pathsToCreate = new LinkedList<String>();
                while (nextSeparatorIndex > -1) {
                    String pathSegment = path.substring(0, nextSeparatorIndex);
                    if (pathSegment.length() == 0 || session.exists(pathSegment)) {
                        // no more paths to create
                        break;
                    } else {
                        pathsToCreate.add(0, pathSegment);
                        nextSeparatorIndex = pathSegment.lastIndexOf(remoteFileSeparator);
                    }
                }

                for (String pathToCreate : pathsToCreate) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Creating '" + pathToCreate + "'");
                    }
                    session.mkdir(pathToCreate);
                }
            } else {
                session.mkdir(path);
            }
        }
    }

}