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/*
 * Copyright  2000-2004 The Apache Software Foundation
 *
 *  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 org.apache.tools.ant.taskdefs;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.Vector;
import java.util.zip.GZIPOutputStream;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.EnumeratedAttribute;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.ant.util.MergingMapper;
import org.apache.tools.ant.util.SourceFileScanner;
import org.apache.tools.bzip2.CBZip2OutputStream;
import org.apache.tools.tar.TarConstants;
import org.apache.tools.tar.TarEntry;
import org.apache.tools.tar.TarOutputStream;
import org.apache.tools.zip.UnixStat;

/**
 * Creates a tar archive.
 *
 * @since Ant 1.1
 *
 * @ant.task category="packaging"
 */
public class Tar extends MatchingTask {

    /**
     * @deprecated Tar.WARN is deprecated and is replaced with
     *             Tar.TarLongFileMode.WARN
     */
    public static final String WARN = "warn";
    /**
     * @deprecated Tar.FAIL is deprecated and is replaced with
     *             Tar.TarLongFileMode.FAIL
     */
    public static final String FAIL = "fail";
    /**
     * @deprecated Tar.TRUNCATE is deprecated and is replaced with
     *             Tar.TarLongFileMode.TRUNCATE
     */
    public static final String TRUNCATE = "truncate";
    /**
     * @deprecated Tar.GNU is deprecated and is replaced with
     *             Tar.TarLongFileMode.GNU
     */
    public static final String GNU = "gnu";
    /**
     * @deprecated Tar.OMIT is deprecated and is replaced with
     *             Tar.TarLongFileMode.OMIT
     */
    public static final String OMIT = "omit";

    File tarFile;
    File baseDir;

    private TarLongFileMode longFileMode = new TarLongFileMode();

    Vector filesets = new Vector();
    Vector fileSetFiles = new Vector();

    /**
     * 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.addElement(fileset);
        return fileset;
    }


    /**
     * Set is the name/location of where to create the tar file.
     * @param tarFile the location of the tar file.
     * @deprecated for consistency with other tasks, please use setDestFile()
     */
    public void setTarfile(File tarFile) {
        this.tarFile = tarFile;
    }

    /**
     * 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.tarFile = destFile;
    }

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

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

* Allowable values are *

    *
  • truncate - paths are truncated to the maximum length *
  • fail - paths greater than the maximum cause a build exception *
  • warn - paths greater than the maximum cause a warning and GNU is used *
  • gnu - GNU extensions are used for any paths greater than the maximum. *
  • omit - paths greater than the maximum are omitted from the archive *
* @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); } /** * Set how to handle long files, those with a path>100 chars. * Optional, default=warn. *

* Allowable values are *

    *
  • truncate - paths are truncated to the maximum length *
  • fail - paths greater than the maximum cause a build exception *
  • warn - paths greater than the maximum cause a warning and GNU is used *
  • gnu - GNU extensions are used for any paths greater than the maximum. *
  • omit - paths greater than the maximum are omitted from the archive *
* @param mode the mode to handle long file names. */ public void setLongfile(TarLongFileMode mode) { this.longFileMode = mode; } /** * Set compression method. * Allowable values are *
    *
  • none - no compression *
  • gzip - Gzip compression *
  • bzip2 - Bzip2 compression *
* @param mode the compression method. */ public void setCompression(TarCompressionMethod mode) { this.compression = mode; } /** * do the business * @throws BuildException on error */ public void execute() throws BuildException { if (tarFile == null) { throw new BuildException("tarfile attribute must be set!", getLocation()); } if (tarFile.exists() && tarFile.isDirectory()) { throw new BuildException("tarfile is a directory!", getLocation()); } if (tarFile.exists() && !tarFile.canWrite()) { throw new BuildException("Can not write to the specified tarfile!", getLocation()); } Vector savedFileSets = (Vector) filesets.clone(); try { if (baseDir != null) { if (!baseDir.exists()) { throw new BuildException("basedir does not exist!", getLocation()); } // add the main fileset to the list of filesets to process. TarFileSet mainFileSet = new TarFileSet(fileset); mainFileSet.setDir(baseDir); filesets.addElement(mainFileSet); } if (filesets.size() == 0) { throw new BuildException("You must supply either a basedir " + "attribute or some nested filesets.", getLocation()); } // check if tar is out of date with respect to each // fileset boolean upToDate = true; for (Enumeration e = filesets.elements(); e.hasMoreElements();) { TarFileSet fs = (TarFileSet) e.nextElement(); String[] files = fs.getFiles(getProject()); if (!archiveIsUpToDate(files, fs.getDir(getProject()))) { upToDate = false; } for (int i = 0; i < files.length; ++i) { if (tarFile.equals(new File(fs.getDir(getProject()), files[i]))) { throw new BuildException("A tar file cannot include " + "itself", getLocation()); } } } if (upToDate) { log("Nothing to do: " + tarFile.getAbsolutePath() + " is up to date.", Project.MSG_INFO); return; } log("Building tar: " + tarFile.getAbsolutePath(), Project.MSG_INFO); TarOutputStream tOut = null; try { tOut = new TarOutputStream( compression.compress( new BufferedOutputStream( new FileOutputStream(tarFile)))); tOut.setDebug(true); if (longFileMode.isTruncateMode()) { tOut.setLongFileMode(TarOutputStream.LONGFILE_TRUNCATE); } else if (longFileMode.isFailMode() || longFileMode.isOmitMode()) { tOut.setLongFileMode(TarOutputStream.LONGFILE_ERROR); } else { // warn or GNU tOut.setLongFileMode(TarOutputStream.LONGFILE_GNU); } longWarningGiven = false; for (Enumeration e = filesets.elements(); e.hasMoreElements();) { TarFileSet fs = (TarFileSet) e.nextElement(); String[] files = fs.getFiles(getProject()); if (files.length > 1 && fs.getFullpath().length() > 0) { throw new BuildException("fullpath attribute may only " + "be specified for " + "filesets that specify a " + "single file."); } 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, fs); } } } catch (IOException ioe) { String msg = "Problem creating TAR: " + ioe.getMessage(); throw new BuildException(msg, ioe, getLocation()); } finally { if (tOut != null) { try { // close up tOut.close(); } catch (IOException e) { // ignore } } } } finally { filesets = savedFileSets; } } /** * tar a file * @param file the file to tar * @param tOut the output stream * @param vPath the path name of the file to tar * @param tarFileSet the fileset that the file came from. * @throws IOException on error */ protected void tarFile(File file, TarOutputStream tOut, String vPath, TarFileSet tarFileSet) throws IOException { FileInputStream fIn = null; String fullpath = tarFileSet.getFullpath(); if (fullpath.length() > 0) { vPath = fullpath; } else { // don't add "" to the archive if (vPath.length() <= 0) { return; } if (file.isDirectory() && !vPath.endsWith("/")) { vPath += "/"; } String prefix = tarFileSet.getPrefix(); // '/' is appended for compatibility with the zip task. if (prefix.length() > 0 && !prefix.endsWith("/")) { prefix = prefix + "/"; } vPath = prefix + vPath; } if (vPath.startsWith("/") && !tarFileSet.getPreserveLeadingSlashes()) { int l = vPath.length(); if (l <= 1) { // we would end up adding "" to the archive return; } vPath = vPath.substring(1, l); } try { if (vPath.length() >= TarConstants.NAMELEN) { if (longFileMode.isOmitMode()) { log("Omitting: " + vPath, Project.MSG_INFO); return; } else if (longFileMode.isWarnMode()) { log("Entry: " + vPath + " longer than " + TarConstants.NAMELEN + " characters.", Project.MSG_WARN); if (!longWarningGiven) { log("Resulting tar file can only be processed " + "successfully by GNU compatible tar commands", Project.MSG_WARN); longWarningGiven = true; } } else if (longFileMode.isFailMode()) { throw new BuildException("Entry: " + vPath + " longer than " + TarConstants.NAMELEN + "characters.", getLocation()); } } TarEntry te = new TarEntry(vPath); te.setModTime(file.lastModified()); if (!file.isDirectory()) { te.setSize(file.length()); te.setMode(tarFileSet.getMode()); } else { te.setMode(tarFileSet.getDirMode()); } te.setUserName(tarFileSet.getUserName()); te.setGroupName(tarFileSet.getGroup()); te.setUserId(tarFileSet.getUid()); te.setGroupId(tarFileSet.getGid()); tOut.putNextEntry(te); if (!file.isDirectory()) { fIn = new FileInputStream(file); byte[] buffer = new byte[8 * 1024]; int count = 0; do { tOut.write(buffer, 0, count); count = fIn.read(buffer, 0, buffer.length); } while (count != -1); } tOut.closeEntry(); } finally { if (fIn != null) { fIn.close(); } } } /** * Is the archive up to date in relationship to a list of files. * @param files the files to check * @return true if the archive is up to date. * @deprecated use the two-arg version instead. */ protected boolean archiveIsUpToDate(String[] files) { return archiveIsUpToDate(files, baseDir); } /** * Is the archive up to date in relationship to a list of files. * @param files the files to check * @param dir the base directory for the files. * @return true if the archive is up to date. * @since Ant 1.5.2 */ protected boolean archiveIsUpToDate(String[] files, File dir) { SourceFileScanner sfs = new SourceFileScanner(this); MergingMapper mm = new MergingMapper(); mm.setTo(tarFile.getAbsolutePath()); return sfs.restrict(files, dir, null, mm).length == 0; } /** * This is a FileSet with the option to specify permissions * and other attributes. */ public static class TarFileSet extends FileSet { private String[] files = null; private int fileMode = UnixStat.FILE_FLAG | UnixStat.DEFAULT_FILE_PERM; private int dirMode = UnixStat.DIR_FLAG | UnixStat.DEFAULT_DIR_PERM; private String userName = ""; private String groupName = ""; private int uid; private int gid; private String prefix = ""; private String fullpath = ""; private boolean preserveLeadingSlashes = false; /** * Creates a new TarFileSet instance. * Using a fileset as a constructor argument. * * @param fileset a FileSet value */ public TarFileSet(FileSet fileset) { super(fileset); } /** * Creates a new TarFileSet 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) { DirectoryScanner ds = getDirectoryScanner(p); String[] directories = ds.getIncludedDirectories(); String[] filesPerSe = ds.getIncludedFiles(); 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; } /** * 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) { this.fileMode = UnixStat.FILE_FLAG | Integer.parseInt(octalString, 8); } /** * @return the current mode. */ public int getMode() { return fileMode; } /** * A 3 digit octal string, specify the user, group and * other modes in the standard Unix fashion; * optional, default=0755 * * @param octalString a 3 digit octal string. * @since Ant 1.6 */ public void setDirMode(String octalString) { this.dirMode = UnixStat.DIR_FLAG | Integer.parseInt(octalString, 8); } /** * @return the current directory mode * @since Ant 1.6 */ public int getDirMode() { return dirMode; } /** * The username for the tar entry * This is not the same as the UID. * @param userName the user name for the tar entry. */ public void setUserName(String userName) { this.userName = userName; } /** * @return the user name for the tar entry */ public String getUserName() { return userName; } /** * The uid for the tar entry * This is not the same as the User name. * @param uid the id of the user for the tar entry. */ public void setUid(int uid) { this.uid = uid; } /** * @return the uid for the tar entry */ public int getUid() { return uid; } /** * The groupname for the tar entry; optional, default="" * This is not the same as the GID. * @param groupName the group name string. */ public void setGroup(String groupName) { this.groupName = groupName; } /** * @return the group name string. */ public String getGroup() { return groupName; } /** * The GID for the tar entry; optional, default="0" * This is not the same as the group name. * @param gid the group id. */ public void setGid(int gid) { this.gid = gid; } /** * @return the group identifier. */ public int getGid() { return gid; } /** * If the prefix attribute is set, all files in the fileset * are prefixed with that path in the archive. * optional. * @param prefix the path prefix. */ public void setPrefix(String prefix) { this.prefix = prefix; } /** * @return the path prefix for the files in the fileset. */ public String getPrefix() { return prefix; } /** * If the fullpath attribute is set, the file in the fileset * is written with that path in the archive. The prefix attribute, * if specified, is ignored. It is an error to have more than one file specified in * such a fileset. * @param fullpath the path to use for the file in a fileset. */ public void setFullpath(String fullpath) { this.fullpath = fullpath; } /** * @return the path to use for a single file fileset. */ public String getFullpath() { return fullpath; } /** * Flag to indicates whether leading `/'s should * be preserved in the file names. * Optional, default is false. * @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 value = getValue(); if (GZIP.equals(value)) { return new GZIPOutputStream(ostream); } else { if (BZIP2.equals(value)) { ostream.write('B'); ostream.write('Z'); return new CBZip2OutputStream(ostream); } } return ostream; } } }




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