打tar包工具TarUtil（1）

最新推荐文章于 2018-05-09 12:32:43 发布

原创最新推荐文章于 2018-05-09 12:32:43 发布 · 494 阅读

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文章标签：

#工具 #deprecated #compression #permissions #string #file

本文介绍了一个名为 TarUtile 的 Java 类，该类用于创建和管理 tar 文件。它支持设置输出文件位置、基本目录、压缩方式及处理长文件路径等特性。通过创建文件集和指定权限，用户可以灵活地定制 tar 归档。

public class TarUtil extends MatchingTask
{
    private static final int MODE = 8;

    private File tarFileObj;

    private File baseDir;

    private TarLongFileMode longFileMode = new TarLongFileMode();

    private List<TarFileSet> filesets = new ArrayList<TarFileSet>();

    /**
     * Indicates whether the user has been warned about long files already.
     */
    private boolean longWarningGiven = false;

    private TarCompressionMethod compression = new TarCompressionMethod();

    /**
     * Add a new fileset with the option to specify permissions
     * @return the tar fileset to be used as the nested element.
     */
    public TarFileSet createTarFileSet()
    {
        TarFileSet fileset = new TarFileSet();
        filesets.add(fileset);
        return fileset;
    }

    /**
     * Set is the name/location of where to create the tar file.
     * @since Ant 1.5
     * @param destFile The output of the tar
     */
    public void setDestFile(File destFile)
    {
        this.tarFileObj = destFile;
    }

    /**
     * This is the base directory to look in for things to tar.
     * @param baseDirectory the base directory.
     */
    public void setBasedir(File baseDirectory)
    {
        this.baseDir = baseDirectory;
    }

    /**
     * Set how to handle long files, those with a path>100 chars.
     * Optional, default=warn.
     *

     * Allowable values are
     * <ul>
     * <li> truncate - paths are truncated to the maximum length
     * <li> fail - paths greater than the maximum cause a build exception
     * <li> warn - paths greater than the maximum cause a warning and GNU is used
     * <li> gnu - GNU extensions are used for any paths greater than the maximum.
     * <li> omit - paths greater than the maximum are omitted from the archive
     * </ul>
     * @param mode the mode string to handle long files.
     * @deprecated setLongFile(String) is deprecated and is replaced with
     *             setLongFile(Tar.TarLongFileMode) to make Ant's Introspection
     *             mechanism do the work and also to encapsulate operations on
     *             the mode in its own class.
     */
    public void setLongfile(String mode)
    {
        log("DEPRECATED - The setLongfile(String) method has been deprecated."
                + " Use setLongfile(Tar.TarLongFileMode) instead.");
        this.longFileMode = new TarLongFileMode();
        longFileMode.setValue(mode);
    }