com.microsoft.alm.helpers.Path Maven / Gradle / Ivy

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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See License.txt in the project root.

package com.microsoft.alm.helpers;

import java.io.File;

/**
 * Equivalent to System.IO.Path
 */
public class Path {
    public static String changeExtension(final String path, final String extension) {
        if (StringHelper.isNullOrEmpty(path)) {
            return path;
        }
        final StringBuilder sb = new StringBuilder(path.length());
        final String minusLastExtension = getFileNameWithoutExtension(path);
        sb.append(minusLastExtension);

        if (extension != null) {
            if (!extension.startsWith(".") && !path.endsWith(".")) {
                sb.append('.');
            }
            sb.append(extension);
        }
        return sb.toString();
    }

    public static String combine(final String path1, final String path2) {
        final File file = new File(path1, path2);
        return file.getPath();
    }

    public static boolean directoryExists(final String path) {
        final File file = new File(path);
        return file.exists() && file.isDirectory();
    }

    public static boolean fileExists(final String path) {
        final File file = new File(path);
        return file.exists() && file.isFile();
    }

    public static String getDirectoryName(final String path) {
        final File file = new File(path);
        return file.getParent();
    }

    // Inspired by http://stackoverflow.com/a/4094034
    public static String getFileNameWithoutExtension(final String path) {
        final String result = path.replaceAll("^(.*[/\\\\]?[^/\\\\]*)(\\.[^./\\\\]+)$", "$1");
        return result;
    }

    public static boolean isAbsolute(final String path) {
        final File file = new File(path);
        return file.isAbsolute();
    }

    public static String construct(final String... segments) {
        final StringBuilder builder = new StringBuilder();
        for (final String segment : segments) {
            builder.append(segment).append(File.separator);
        }
        // Remove last trailing File.separator
        final int idx = builder.lastIndexOf(File.separator);
        if (idx > -1) {
            builder.deleteCharAt(builder.lastIndexOf(File.separator));
        }

        return builder.toString();
    }
}