com.thoughtworks.go.util.FilenameUtil.java Source code

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Here is the source code for com.thoughtworks.go.util.FilenameUtil.java

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/*
 * Copyright 2019 ThoughtWorks, Inc.
 *
 * 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
 *
 *     http://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 com.thoughtworks.go.util;

import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;

import java.io.File;
import java.io.IOException;

public class FilenameUtil {
    public static boolean isNormalizedDirectoryPathInsideNormalizedParentDirectory(String parent,
            String subdirectory) {
        final String normalizedParentPath = FilenameUtils.normalize(parent + File.separator);
        final String normalizedSubDirPath = FilenameUtils.normalize(subdirectory + File.separator);
        return StringUtils.isNotBlank(normalizedParentPath) && StringUtils.isNotBlank(normalizedSubDirPath)
                && normalizedSubDirPath.startsWith(normalizedParentPath);
    }

    public static boolean isNormalizedPathOutsideWorkingDir(String path) {
        final String normalize = FilenameUtils.normalize(path);
        final String prefix = FilenameUtils.getPrefix(normalize);
        return (normalize != null && StringUtils.isBlank(prefix));
    }
}