Examples of org.zeroturnaround.zip.extra.AsiExtraField

org.zeroturnaround.zip.extra.AsiExtraField

pache.org), org.apache.tools.zip package. All license and other documentation is intact. Adds Unix file permission and UID/GID fields as well as symbolic link handling.

This class uses the ASi extra field in the format:

 Value         Size            Description -----         ----            ----------- (Unix3) 0x756e        Short           tag for this extra block type TSize         Short           total data size for this block CRC           Long            CRC-32 of the remaining data Mode          Short           file permissions SizDev        Long            symlink'd size OR major/minor dev num UID           Short           user ID GID           Short           group ID (var.)        variable        symbolic link filename

taken from appnote.iz (Info-ZIP note, 981119) found at ftp://ftp.uu.net/pub/archiving/zip/doc/

Short is two bytes and Long is four bytes in big endian byte and word order, device numbers are currently not supported.

Since the documentation this class is based upon doesn't mention the character encoding of the file name at all, it is assumed that it uses the current platform's default encoding.

   *  @param permissions permissions to assign
   */
  static boolean setZTFilePermissions(ZipEntry zipEntry, ZTFilePermissions permissions) {
    try {
      List<ZipExtraField> fields = ExtraFieldUtils.parse(zipEntry.getExtra());
      AsiExtraField asiExtraField = getFirstAsiExtraField(fields);
      if (asiExtraField == null) {
        asiExtraField = new AsiExtraField();
        fields.add(asiExtraField);
      }
      
      asiExtraField.setDirectory(zipEntry.isDirectory());
      asiExtraField.setMode(ZTFilePermissionsUtil.toPosixFileMode(permissions));
      zipEntry.setExtra(ExtraFieldUtils.mergeLocalFileDataData(fields));
      return true;
    }
    catch (java.util.zip.ZipException ze) {
      return false;

   */
  static ZTFilePermissions getZTFilePermissions(ZipEntry zipEntry) {
    try {
      ZTFilePermissions permissions = null;
      List<ZipExtraField> fields = ExtraFieldUtils.parse(zipEntry.getExtra());
      AsiExtraField asiExtraField = getFirstAsiExtraField(fields);
      if (asiExtraField != null) {
        int mode = asiExtraField.getMode() & 0777;
        permissions = ZTFilePermissionsUtil.fromPosixFileMode(mode);
      }
      return permissions;
    }
    catch (java.util.zip.ZipException ze) {

      throw new ZipException(ze);
    }
  }


  private static AsiExtraField getFirstAsiExtraField(List<ZipExtraField> fields) {
    AsiExtraField asiExtraField = null;
    for (ZipExtraField field : fields) {
      if (field instanceof AsiExtraField) {
        asiExtraField = (AsiExtraField) field;
      }
    }

Examples of org.zeroturnaround.zip.extra.AsiExtraField

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