$Id: LICENSE 5711 2009-03-19 19:12:16Z FREQUENCY@cpan.org $

Copyleft (C) 2009 by Jonathan Yu <frequency@cpan.org>. All rights reversed.

ABSTRACT

I, the copyright holder of this package, hereby release the entire contents
therein into the public domain. This applies worldwide, to the extent that
it is permissible by law.

In case this is not legally possible, I grant any entity the right to use
this work for any purpose, without any conditions, unless such conditions
are required by law.

RATIONALE

As the author / copyright holder / intellectual property owner, I want this
codebase to be as free (both as in freedom and free beer) as possible in
your legal jurisdiction. This software and the code contained herein is (to
the best of my knowledge) completely unencumbered by patents, copyright,
licensing restrictions, etc.

Some legal departments of commercial entities may be uncomfortable with the
using software without first obtaining a license from the author directly.
If this is the case, then I encourage a representative of your legal
department to contact me directly to discuss a token fee being paid in
exchange for a license to unrestricted use of the code.

DISCLAIMER OF WARRANTIES

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implied, including but not limited to the warranties of merchantability,
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the software.

LICENSING

If you are legally required to do so, then you may use this file under, at
your option:

1. The MIT/X11 License; or,
2. The BSD License; or,
3. The Perl Artistic License, version 2.0 or later; or,
4. The GNU General Public License, version 2.0 or later; or,
5. The Creative Commons CC0 License, version 1.0 or later; or,
6. Any other license approved by the Open Source Initiative, which currently
   lists additional licenses including, but not limited to:
   a. Apache License, version 2.0
   b. GNU Library or "Lesser" General Public License (LGPL)
   c. Mozilla Public License, version 1.1 (MPL)
   d. Common Development and Distribution License
   e. Common Public License, version 1.0
   (see http://opensource.org/ for more)

Note that points (3) and (4) roughly coincide with the distribution terms of
Perl itself; so if you have considered and accepted the licensing restrictions
posed by Perl 5.10, you have accepted suitable terms to use this software.

On the other hand, I'm not a lawyer, and you may wish to construe use of the
code under what the author believes is the least restrictive open source
software license - the MIT/X11 License.

For the sake of convenience, the full texts of all these licenses follow.

-------------- MIT/X11 License -------------- 

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-------------- BSD License (3-Clause) -------------- 

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-------------- Artistic License (Version 2.0) -------------- 

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-------------- The GNU General Public License (Version 3.0) --------------

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     interchange.
  b) Convey the object code in, or embodied in, a physical product (including
     a physical distribution medium), accompanied by a written offer, valid
     for at least three years and valid for as long as you offer spare parts
     or customer support for that product model, to give anyone who possesses
     the object code either
     (1) a copy of the Corresponding Source for all the software in the
         product that is covered by this License, on a durable physical medium
         customarily used for software interchange, for a price no more than
         your reasonable cost of physically performing this conveying of
         source, or
     (2) access to copy the Corresponding Source from a network server at no
         charge.
  c) Convey individual copies of the object code with a copy of the written
     offer to provide the Corresponding Source. This alternative is allowed
     only occasionally and noncommercially, and only if you received the
     object code with such an offer, in accord with subsection 6b.
  d) Convey the object code by offering access from a designated place (gratis
     or for a charge), and offer equivalent access to the Corresponding Source
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     require recipients to copy the Corresponding Source along with the object
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  e) Convey the object code using peer-to-peer transmission, provided you
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     subsection 6d.

  A separable portion of the object code, whose source code is excluded from
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  A "User Product" is either
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  "Installation Information" for a User Product means any methods, procedures,
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  If you convey an object code work under this section in, or with, or
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  The requirement to provide Installation Information does not include a
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  Corresponding Source conveyed, and Installation Information provided, in
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7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this License
  by making exceptions from one or more of its conditions. Additional
  permissions that are applicable to the entire Program shall be treated as
  though they were included in this License, to the extent that they are valid
  under applicable law. If additional permissions apply only to part of the
  Program, that part may be used separately under those permissions, but the
  entire Program remains governed by this License without regard to the
  additional permissions.

  When you convey a copy of a covered work, you may at your option remove any
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  Notwithstanding any other provision of this License, for material you add to
  a covered work, you may (if authorized by the copyright holders of that
  material) supplement the terms of this License with terms:
  a) Disclaiming warranty or limiting liability differently from the terms of
     sections 15 and 16 of this License; or
  b) Requiring preservation of specified reasonable legal notices or author
     attributions in that material or in the Appropriate Legal Notices
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  All other non-permissive additional terms are considered "further
  restrictions" within the meaning of section 10. If the Program as you
  received it, or any part of it, contains a notice stating that it is
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  you may remove that term. If a license document contains a further
  restriction but permits relicensing or conveying under this License, you may
  add to a covered work material governed by the terms of that license
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  If you add terms to a covered work in accord with this section, you must
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  applicable terms.

  Additional terms, permissive or non-permissive, may be stated in the form of
  a separately written license, or stated as exceptions; the above
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8. Termination.

  You may not propagate or modify a covered work except as expressly provided
  under this License. Any attempt otherwise to propagate or modify it is void,
  and will automatically terminate your rights under this License (including
  any patent licenses granted under the third paragraph of section 11).

  However, if you cease all violation of this License, then your license from
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  (a) provisionally, unless and until the copyright holder explicitly and
      finally terminates your license, and
  (b) permanently, if the copyright holder fails to notify you of the
      violation by some reasonable means prior to 60 days after the cessation.

  Moreover, your license from a particular copyright holder is reinstated
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  reasonable means, this is the first time you have received notice of
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  cure the violation prior to 30 days after your receipt of the notice.

  Termination of your rights under this section does not terminate the
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  License. If your rights have been terminated and not permanently reinstated,
  you do not qualify to receive new licenses for the same material under
  section 10.

9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or run a
  copy of the Program. Ancillary propagation of a covered work occurring
  solely as a consequence of using peer-to-peer transmission to receive a copy
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  License grants you permission to propagate or modify any covered work. These
  actions infringe copyright if you do not accept this License. Therefore, by
  modifying or propagating a covered work, you indicate your acceptance of
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10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically receives a
  license from the original licensors, to run, modify and propagate that work,
  subject to this License. You are not responsible for enforcing compliance by
  third parties with this License.

  An "entity transaction" is a transaction transferring control of an
  organization, or substantially all assets of one, or subdividing an
  organization, or merging organizations. If propagation of a covered work
  results from an entity transaction, each party to that transaction who
  receives a copy of the work also receives whatever licenses to the work the
  party's predecessor in interest had or could give under the previous
  paragraph, plus a right to possession of the Corresponding Source of the
  work from the predecessor in interest, if the predecessor has it or can get
  it with reasonable efforts.

  You may not impose any further restrictions on the exercise of the rights
  granted or affirmed under this License. For example, you may not impose a
  license fee, royalty, or other charge for exercise of rights granted under
  this License, and you may not initiate litigation (including a cross-claim
  or counterclaim in a lawsuit) alleging that any patent claim is infringed by
  making, using, selling, offering for sale, or importing the Program or any
  portion of it.

11. Patents.

  A "contributor" is a copyright holder who authorizes use under this License
  of the Program or a work on which the Program is based. The work thus
  licensed is called the contributor's "contributor version".

  A contributor's "essential patent claims" are all patent claims owned or
  controlled by the contributor, whether already acquired or hereafter
  acquired, that would be infringed by some manner, permitted by this License,
  of making, using, or selling its contributor version, but do not include
  claims that would be infringed only as a consequence of further modification
  of the contributor version. For purposes of this definition, "control"
  includes the right to grant patent sublicenses in a manner consistent with
  the requirements of this License.

  Each contributor grants you a non-exclusive, worldwide, royalty-free patent
  license under the contributor's essential patent claims, to make, use, sell,
  offer for sale, import and otherwise run, modify and propagate the contents
  of its contributor version.

  In the following three paragraphs, a "patent license" is any express
  agreement or commitment, however denominated, not to enforce a patent (such
  as an express permission to practice a patent or covenant not to sue for
  patent infringement). To "grant" such a patent license to a party means to
  make such an agreement or commitment not to enforce a patent against the
  party.

  If you convey a covered work, knowingly relying on a patent license, and the
  Corresponding Source of the work is not available for anyone to copy, free
  of charge and under the terms of this License, through a publicly available
  network server or other readily accessible means, then you must either
  (1) cause the Corresponding Source to be so available, or
  (2) arrange to deprive yourself of the benefit of the patent license for
      this particular work, or
  (3) arrange, in a manner consistent with the requirements of this License,
      to extend the patent license to downstream recipients. "Knowingly
      relying" means you have actual knowledge that, but for the patent
      license, your conveying the covered work in a country, or your
      recipient's use of the covered work in a country, would infringe one or
      more identifiable patents in that country that you have reason to
      believe are valid.

  If, pursuant to or in connection with a single transaction or arrangement,
  you convey, or propagate by procuring conveyance of, a covered work, and
  grant a patent license to some of the parties receiving the covered work
  authorizing them to use, propagate, modify or convey a specific copy of the
  covered work, then the patent license you grant is automatically extended to
  all recipients of the covered work and works based on it.

  A patent license is "discriminatory" if it does not include within the scope
  of its coverage, prohibits the exercise of, or is conditioned on the
  non-exercise of one or more of the rights that are specifically granted
  under this License. You may not convey a covered work if you are a party to
  an arrangement with a third party that is in the business of distributing
  software, under which you make payment to the third party based on the
  extent of your activity of conveying the work, and under which the third
  party grants, to any of the parties who would receive the covered work from
  you, a discriminatory patent license
  (a) in connection with copies of the covered work conveyed by you (or copies
      made from those copies), or
  (b) primarily for and in connection with specific products or compilations
      that contain the covered work, unless you entered into that arrangement,
      or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting any
  implied license or other defenses to infringement that may otherwise be
  available to you under applicable patent law.

12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
  otherwise) that contradict the conditions of this License, they do not
  excuse you from the conditions of this License. If you cannot convey a
  covered work so as to satisfy simultaneously your obligations under this
  License and any other pertinent obligations, then as a consequence you may
  not convey it at all. For example, if you agree to terms that obligate you
  to collect a royalty for further conveying from those to whom you convey the
  Program, the only way you could satisfy both those terms and this License
  would be to refrain entirely from conveying the Program.

13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have permission to
  link or combine any covered work with a work licensed under version 3 of the
  GNU Affero General Public License into a single combined work, and to convey
  the resulting work. The terms of this License will continue to apply to the
  part which is the covered work, but the special requirements of the GNU
  Affero General Public License, section 13, concerning interaction through a
  network will apply to the combination as such.

14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of the
  GNU General Public License from time to time. Such new versions will be
  similar in spirit to the present version, but may differ in detail to
  address new problems or concerns.

  Each version is given a distinguishing version number. If the Program
  specifies that a certain numbered version of the GNU General Public License
  "or any later version" applies to it, you have the option of following the
  terms and conditions either of that numbered version or of any later version
  published by the Free Software Foundation. If the Program does not specify a
  version number of the GNU General Public License, you may choose any version
  ever published by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future versions of
  the GNU General Public License can be used, that proxy's public statement of
  acceptance of a version permanently authorizes you to choose that version
  for the Program.

  Later license versions may give you additional or different permissions.
  However, no additional obligations are imposed on any author or copyright
  holder as a result of your choosing to follow a later version.

15. Disclaimer of Warranty.

  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
  LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
  OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND,
  EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
  ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
  SERVICING, REPAIR OR CORRECTION.

16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
  ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE
  PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
  GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
  OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
  OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
  PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
  EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
  SUCH DAMAGES.

17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided above
  cannot be given local legal effect according to their terms, reviewing
  courts shall apply local law that most closely approximates an absolute
  waiver of all civil liability in connection with the Program, unless a
  warranty or assumption of liability accompanies a copy of the Program in
  return for a fee.
