tar.java

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            throw new BuildException("fullpath attribute may only "
                                     + "be specified for "
                                     + "filesets that specify a "
                                     + "single file.");
        }
        TarFileSet tfs = asTarFileSet(afs);

        if (isFileFileSet(rc)) {
            FileSet fs = (FileSet) rc;
            String[] files = getFileNames(fs);
            for (int i = 0; i < files.length; i++) {
                File f = new File(fs.getDir(getProject()), files[i]);
                String name = files[i].replace(File.separatorChar, '/');
                tarFile(f, tOut, name, tfs);
            }
        } else if (rc.isFilesystemOnly()) {
            Iterator iter = rc.iterator();
            while (iter.hasNext()) {
                FileResource r = (FileResource) iter.next();
                File f = r.getFile();
                if (f == null) {
                    f = new File(r.getBaseDir(), r.getName());
                }
                tarFile(f, tOut, f.getName(), tfs);
            }
        } else { // non-file resources
            Iterator iter = rc.iterator();
            while (iter.hasNext()) {
                Resource r = (Resource) iter.next();
                tarResource(r, tOut, r.getName(), tfs);
            }
        }
    }

    /**
     * whether the given resource collection is a (subclass of)
     * FileSet that only contains file system resources.
     * @param rc the resource collection to check.
     * @return true if the collection is a fileset.
     * @since Ant 1.7
     */
    protected static final boolean isFileFileSet(ResourceCollection rc) {
        return rc instanceof FileSet && rc.isFilesystemOnly();
    }

    /**
     * Grabs all included files and directors from the FileSet and
     * returns them as an array of (relative) file names.
     * @param fs the fileset to operate on.
     * @return a list of the filenames.
     * @since Ant 1.7
     */
    protected static final String[] getFileNames(FileSet fs) {
        DirectoryScanner ds = fs.getDirectoryScanner(fs.getProject());
        String[] directories = ds.getIncludedDirectories();
        String[] filesPerSe = ds.getIncludedFiles();
        String[] files = new String [directories.length + filesPerSe.length];
        System.arraycopy(directories, 0, files, 0, directories.length);
        System.arraycopy(filesPerSe, 0, files, directories.length,
                         filesPerSe.length);
        return files;
    }

    /**
     * Copies fullpath, prefix and permission attributes from the
     * ArchiveFileSet to a new TarFileSet (or returns it unchanged if
     * it already is a TarFileSet).
     *
     * @param archiveFileSet fileset to copy attributes from, may be null
     * @return a new TarFileSet.
     * @since Ant 1.7
     */
    protected TarFileSet asTarFileSet(ArchiveFileSet archiveFileSet) {
        TarFileSet tfs = null;
        if (archiveFileSet != null && archiveFileSet instanceof TarFileSet) {
            tfs = (TarFileSet) archiveFileSet;
        } else {
            tfs = new TarFileSet();
            tfs.setProject(getProject());
            if (archiveFileSet != null) {
                tfs.setPrefix(archiveFileSet.getPrefix(getProject()));
                tfs.setFullpath(archiveFileSet.getFullpath(getProject()));
                if (archiveFileSet.hasFileModeBeenSet()) {
                    tfs.integerSetFileMode(archiveFileSet
                                           .getFileMode(getProject()));
                }
                if (archiveFileSet.hasDirModeBeenSet()) {
                    tfs.integerSetDirMode(archiveFileSet
                                          .getDirMode(getProject()));
                }

                if (archiveFileSet
                    instanceof org.apache.tools.ant.types.TarFileSet) {
                    org.apache.tools.ant.types.TarFileSet t =
                        (org.apache.tools.ant.types.TarFileSet) archiveFileSet;
                    if (t.hasUserNameBeenSet()) {
                        tfs.setUserName(t.getUserName());
                    }
                    if (t.hasGroupBeenSet()) {
                        tfs.setGroup(t.getGroup());
                    }
                    if (t.hasUserIdBeenSet()) {
                        tfs.setUid(t.getUid());
                    }
                    if (t.hasGroupIdBeenSet()) {
                        tfs.setGid(t.getGid());
                    }
                }
            }
        }
        return tfs;
    }

    /**
     * This is a FileSet with the option to specify permissions
     * and other attributes.
     */
    public static class TarFileSet
        extends org.apache.tools.ant.types.TarFileSet {
        private String[] files = null;

        private boolean preserveLeadingSlashes = false;

        /**
         * Creates a new <code>TarFileSet</code> instance.
         * Using a fileset as a constructor argument.
         *
         * @param fileset a <code>FileSet</code> value
         */
        public TarFileSet(FileSet fileset) {
            super(fileset);
        }

        /**
         * Creates a new <code>TarFileSet</code> instance.
         *
         */
        public TarFileSet() {
            super();
        }

        /**
         *  Get a list of files and directories specified in the fileset.
         * @param p the current project.
         * @return a list of file and directory names, relative to
         *    the baseDir for the project.
         */
        public String[] getFiles(Project p) {
            if (files == null) {
                files = getFileNames(this);
            }

            return files;
        }

        /**
         * A 3 digit octal string, specify the user, group and
         * other modes in the standard Unix fashion;
         * optional, default=0644
         * @param octalString a 3 digit octal string.
         */
        public void setMode(String octalString) {
            setFileMode(octalString);
        }

        /**
         * @return the current mode.
         */
        public int getMode() {
            return getFileMode(this.getProject());
        }

        /**
         * Flag to indicates whether leading `/'s should
         * be preserved in the file names.
         * Optional, default is <code>false</code>.
         * @param b the leading slashes flag.
         */
        public void setPreserveLeadingSlashes(boolean b) {
            this.preserveLeadingSlashes = b;
        }

        /**
         * @return the leading slashes flag.
         */
        public boolean getPreserveLeadingSlashes() {
            return preserveLeadingSlashes;
        }
    }

    /**
     * Set of options for long file handling in the task.
     *
     */
    public static class TarLongFileMode extends EnumeratedAttribute {

        /** permissible values for longfile attribute */
        public static final String
            WARN = "warn",
            FAIL = "fail",
            TRUNCATE = "truncate",
            GNU = "gnu",
            OMIT = "omit";

        private final String[] validModes = {WARN, FAIL, TRUNCATE, GNU, OMIT};

        /** Constructor, defaults to "warn" */
        public TarLongFileMode() {
            super();
            setValue(WARN);
        }

        /**
         * @return the possible values for this enumerated type.
         */
        public String[] getValues() {
            return validModes;
        }

        /**
         * @return true if value is "truncate".
         */
        public boolean isTruncateMode() {
            return TRUNCATE.equalsIgnoreCase(getValue());
        }

        /**
         * @return true if value is "warn".
         */
        public boolean isWarnMode() {
            return WARN.equalsIgnoreCase(getValue());
        }

        /**
         * @return true if value is "gnu".
         */
        public boolean isGnuMode() {
            return GNU.equalsIgnoreCase(getValue());
        }

        /**
         * @return true if value is "fail".
         */
        public boolean isFailMode() {
            return FAIL.equalsIgnoreCase(getValue());
        }

        /**
         * @return true if value is "omit".
         */
        public boolean isOmitMode() {
            return OMIT.equalsIgnoreCase(getValue());
        }
    }

    /**
     * Valid Modes for Compression attribute to Tar Task
     *
     */
    public static final class TarCompressionMethod extends EnumeratedAttribute {

        // permissible values for compression attribute
        /**
         *    No compression
         */
        private static final String NONE = "none";
        /**
         *    GZIP compression
         */
        private static final String GZIP = "gzip";
        /**
         *    BZIP2 compression
         */
        private static final String BZIP2 = "bzip2";


        /**
         * Default constructor
         */
        public TarCompressionMethod() {
            super();
            setValue(NONE);
        }

        /**
         *  Get valid enumeration values.
         *  @return valid enumeration values
         */
        public String[] getValues() {
            return new String[] {NONE, GZIP, BZIP2 };
        }

        /**
         *  This method wraps the output stream with the
         *     corresponding compression method
         *
         *  @param ostream output stream
         *  @return output stream with on-the-fly compression
         *  @exception IOException thrown if file is not writable
         */
        private OutputStream compress(final OutputStream ostream)
            throws IOException {
            final String v = getValue();
            if (GZIP.equals(v)) {
                return new GZIPOutputStream(ostream);
            } else {
                if (BZIP2.equals(v)) {
                    ostream.write('B');
                    ostream.write('Z');
                    return new CBZip2OutputStream(ostream);
                }
            }
            return ostream;
        }
    }
}