1 =head1 COPYRIGHT AND LICENSE
4 Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>.
6 This library is free software; you can redistribute it and/or modify
7 it under the same terms as Perl itself.
11 THE SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTIES OF ANY KIND,
12 INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OF ACCURACY OR
13 COMPLETENESS OF ANY INFORMATION CONTAINED IN THE SOFTWARE OR IMPLIED
14 WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
16 ===========================================================================
18 This program is free software; you can redistribute it and/or modify
19 it under the terms of either:
21 a. the GNU General Public License as published by the Free
22 Software Foundation; either version 1, or (at your option) any
25 b. the "Artistic License" which comes with this Kit.
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
30 the GNU General Public License or the Artistic License for more details.
32 You should have received a copy of the Artistic License with this
33 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
35 You should also have received a copy of the GNU General Public License
36 along with this program in the file named "Copying". If not, write to the
37 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
38 Boston, MA 02110-1301, USA or visit their web page on the internet at
39 https://www.gnu.org/copyleft/gpl.html.
41 For those of you that choose to use the GNU General Public License,
42 my interpretation of the GNU General Public License is that no Perl
43 script falls under the terms of the GPL unless you explicitly put
44 said script under the terms of the GPL yourself. Furthermore, any
45 object code linked with perl does not automatically fall under the
46 terms of the GPL, provided such object code only adds definitions
47 of subroutines and variables, and does not otherwise impair the
48 resulting interpreter from executing any standard Perl script. I
49 consider linking in C subroutines in this manner to be the moral
50 equivalent of defining subroutines in the Perl language itself. You
51 may sell such an object file as proprietary provided that you provide
52 or offer to provide the Perl source, as specified by the GNU General
53 Public License. (This is merely an alternate way of specifying input
54 to the program.) You may also sell a binary produced by the dumping of
55 a running Perl script that belongs to you, provided that you provide or
56 offer to provide the Perl source as specified by the GPL. (The
57 fact that a Perl interpreter and your code are in the same binary file
58 is, in this case, a form of mere aggregation.) This is my interpretation
59 of the GPL. If you still have concerns or difficulties understanding
60 my intent, feel free to contact me. Of course, the Artistic License
61 spells all this out for your protection, so you may prefer to use that.
64 --- Copying ---------------------------------------------------------------
66 GNU GENERAL PUBLIC LICENSE
67 Version 1, February 1989
69 Copyright (C) 1989 Free Software Foundation, Inc.
70 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
72 Everyone is permitted to copy and distribute verbatim copies
73 of this license document, but changing it is not allowed.
77 The license agreements of most software companies try to keep users
78 at the mercy of those companies. By contrast, our General Public
79 License is intended to guarantee your freedom to share and change free
80 software--to make sure the software is free for all its users. The
81 General Public License applies to the Free Software Foundation's
82 software and to any other program whose authors commit to using it.
83 You can use it for your programs, too.
85 When we speak of free software, we are referring to freedom, not
86 price. Specifically, the General Public License is designed to make
87 sure that you have the freedom to give away or sell copies of free
88 software, that you receive source code or can get it if you want it,
89 that you can change the software or use pieces of it in new free
90 programs; and that you know you can do these things.
92 To protect your rights, we need to make restrictions that forbid
93 anyone to deny you these rights or to ask you to surrender the rights.
94 These restrictions translate to certain responsibilities for you if you
95 distribute copies of the software, or if you modify it.
97 For example, if you distribute copies of a such a program, whether
98 gratis or for a fee, you must give the recipients all the rights that
99 you have. You must make sure that they, too, receive or can get the
100 source code. And you must tell them their rights.
102 We protect your rights with two steps: (1) copyright the software, and
103 (2) offer you this license which gives you legal permission to copy,
104 distribute and/or modify the software.
106 Also, for each author's protection and ours, we want to make certain
107 that everyone understands that there is no warranty for this free
108 software. If the software is modified by someone else and passed on, we
109 want its recipients to know that what they have is not the original, so
110 that any problems introduced by others will not reflect on the original
111 authors' reputations.
113 The precise terms and conditions for copying, distribution and
116 GNU GENERAL PUBLIC LICENSE
117 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
119 0. This License Agreement applies to any program or other work which
120 contains a notice placed by the copyright holder saying it may be
121 distributed under the terms of this General Public License. The
122 "Program", below, refers to any such program or work, and a "work based
123 on the Program" means either the Program or any work containing the
124 Program or a portion of it, either verbatim or with modifications. Each
125 licensee is addressed as "you".
127 1. You may copy and distribute verbatim copies of the Program's source
128 code as you receive it, in any medium, provided that you conspicuously and
129 appropriately publish on each copy an appropriate copyright notice and
130 disclaimer of warranty; keep intact all the notices that refer to this
131 General Public License and to the absence of any warranty; and give any
132 other recipients of the Program a copy of this General Public License
133 along with the Program. You may charge a fee for the physical act of
136 2. You may modify your copy or copies of the Program or any portion of
137 it, and copy and distribute such modifications under the terms of Paragraph
138 1 above, provided that you also do the following:
140 a) cause the modified files to carry prominent notices stating that
141 you changed the files and the date of any change; and
143 b) cause the whole of any work that you distribute or publish, that
144 in whole or in part contains the Program or any part thereof, either
145 with or without modifications, to be licensed at no charge to all
146 third parties under the terms of this General Public License (except
147 that you may choose to grant warranty protection to some or all
148 third parties, at your option).
150 c) If the modified program normally reads commands interactively when
151 run, you must cause it, when started running for such interactive use
152 in the simplest and most usual way, to print or display an
153 announcement including an appropriate copyright notice and a notice
154 that there is no warranty (or else, saying that you provide a
155 warranty) and that users may redistribute the program under these
156 conditions, and telling the user how to view a copy of this General
159 d) You may charge a fee for the physical act of transferring a
160 copy, and you may at your option offer warranty protection in
163 Mere aggregation of another independent work with the Program (or its
164 derivative) on a volume of a storage or distribution medium does not bring
165 the other work under the scope of these terms.
167 3. You may copy and distribute the Program (or a portion or derivative of
168 it, under Paragraph 2) in object code or executable form under the terms of
169 Paragraphs 1 and 2 above provided that you also do one of the following:
171 a) accompany it with the complete corresponding machine-readable
172 source code, which must be distributed under the terms of
173 Paragraphs 1 and 2 above; or,
175 b) accompany it with a written offer, valid for at least three
176 years, to give any third party free (except for a nominal charge
177 for the cost of distribution) a complete machine-readable copy of the
178 corresponding source code, to be distributed under the terms of
179 Paragraphs 1 and 2 above; or,
181 c) accompany it with the information you received as to where the
182 corresponding source code may be obtained. (This alternative is
183 allowed only for noncommercial distribution and only if you
184 received the program in object code or executable form alone.)
186 Source code for a work means the preferred form of the work for making
187 modifications to it. For an executable file, complete source code means
188 all the source code for all modules it contains; but, as a special
189 exception, it need not include source code for modules which are standard
190 libraries that accompany the operating system on which the executable
191 file runs, or for standard header files or definitions files that
192 accompany that operating system.
194 4. You may not copy, modify, sublicense, distribute or transfer the
195 Program except as expressly provided under this General Public License.
196 Any attempt otherwise to copy, modify, sublicense, distribute or transfer
197 the Program is void, and will automatically terminate your rights to use
198 the Program under this License. However, parties who have received
199 copies, or rights to use copies, from you under this General Public
200 License will not have their licenses terminated so long as such parties
201 remain in full compliance.
203 5. By copying, distributing or modifying the Program (or any work based
204 on the Program) you indicate your acceptance of this license to do so,
205 and all its terms and conditions.
207 6. Each time you redistribute the Program (or any work based on the
208 Program), the recipient automatically receives a license from the original
209 licensor to copy, distribute or modify the Program subject to these
210 terms and conditions. You may not impose any further restrictions on the
211 recipients' exercise of the rights granted herein.
213 7. The Free Software Foundation may publish revised and/or new versions
214 of the General Public License from time to time. Such new versions will
215 be similar in spirit to the present version, but may differ in detail to
216 address new problems or concerns.
218 Each version is given a distinguishing version number. If the Program
219 specifies a version number of the license which applies to it and "any
220 later version", you have the option of following the terms and conditions
221 either of that version or of any later version published by the Free
222 Software Foundation. If the Program does not specify a version number of
223 the license, you may choose any version ever published by the Free Software
226 8. If you wish to incorporate parts of the Program into other free
227 programs whose distribution conditions are different, write to the author
228 to ask for permission. For software which is copyrighted by the Free
229 Software Foundation, write to the Free Software Foundation; we sometimes
230 make exceptions for this. Our decision will be guided by the two goals
231 of preserving the free status of all derivatives of our free software and
232 of promoting the sharing and reuse of software generally.
236 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
237 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
238 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
239 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
240 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
241 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
242 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
243 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
244 REPAIR OR CORRECTION.
246 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
247 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
248 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
249 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
250 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
251 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
252 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
253 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
254 POSSIBILITY OF SUCH DAMAGES.
256 END OF TERMS AND CONDITIONS
258 Appendix: How to Apply These Terms to Your New Programs
260 If you develop a new program, and you want it to be of the greatest
261 possible use to humanity, the best way to achieve this is to make it
262 free software which everyone can redistribute and change under these
265 To do so, attach the following notices to the program. It is safest to
266 attach them to the start of each source file to most effectively convey
267 the exclusion of warranty; and each file should have at least the
268 "copyright" line and a pointer to where the full notice is found.
270 <one line to give the program's name and a brief idea of what it does.>
271 Copyright (C) 19yy <name of author>
273 This program is free software; you can redistribute it and/or modify
274 it under the terms of the GNU General Public License as published by
275 the Free Software Foundation; either version 1, or (at your option)
278 This program is distributed in the hope that it will be useful,
279 but WITHOUT ANY WARRANTY; without even the implied warranty of
280 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
281 GNU General Public License for more details.
283 You should have received a copy of the GNU General Public License
284 along with this program; if not, write to the Free Software
285 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
288 Also add information on how to contact you by electronic and paper mail.
290 If the program is interactive, make it output a short notice like this
291 when it starts in an interactive mode:
293 Gnomovision version 69, Copyright (C) 19xx name of author
294 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
295 This is free software, and you are welcome to redistribute it
296 under certain conditions; type `show c' for details.
298 The hypothetical commands `show w' and `show c' should show the
299 appropriate parts of the General Public License. Of course, the
300 commands you use may be called something other than `show w' and `show
301 c'; they could even be mouse-clicks or menu items--whatever suits your
304 You should also get your employer (if you work as a programmer) or your
305 school, if any, to sign a "copyright disclaimer" for the program, if
306 necessary. Here a sample; alter the names:
308 Yoyodyne, Inc., hereby disclaims all copyright interest in the
309 program `Gnomovision' (a program to direct compilers to make passes
310 at assemblers) written by James Hacker.
312 <signature of Ty Coon>, 1 April 1989
313 Ty Coon, President of Vice
315 That's all there is to it!
318 --- Artistic --------------------------------------------------------------
320 The "Artistic License"
324 The intent of this document is to state the conditions under which a
325 Package may be copied, such that the Copyright Holder maintains some
326 semblance of artistic control over the development of the package,
327 while giving the users of the package the right to use and distribute
328 the Package in a more-or-less customary fashion, plus the right to make
329 reasonable modifications.
333 "Package" refers to the collection of files distributed by the
334 Copyright Holder, and derivatives of that collection of files
335 created through textual modification.
337 "Standard Version" refers to such a Package if it has not been
338 modified, or has been modified in accordance with the wishes
339 of the Copyright Holder as specified below.
341 "Copyright Holder" is whoever is named in the copyright or
342 copyrights for the package.
344 "You" is you, if you're thinking about copying or distributing
347 "Reasonable copying fee" is whatever you can justify on the
348 basis of media cost, duplication charges, time of people involved,
349 and so on. (You will not be required to justify it to the
350 Copyright Holder, but only to the computing community at large
351 as a market that must bear the fee.)
353 "Freely Available" means that no fee is charged for the item
354 itself, though there may be fees involved in handling the item.
355 It also means that recipients of the item may redistribute it
356 under the same conditions they received it.
358 1. You may make and give away verbatim copies of the source form of the
359 Standard Version of this Package without restriction, provided that you
360 duplicate all of the original copyright notices and associated disclaimers.
362 2. You may apply bug fixes, portability fixes and other modifications
363 derived from the Public Domain or from the Copyright Holder. A Package
364 modified in such a way shall still be considered the Standard Version.
366 3. You may otherwise modify your copy of this Package in any way, provided
367 that you insert a prominent notice in each changed file stating how and
368 when you changed that file, and provided that you do at least ONE of the
371 a) place your modifications in the Public Domain or otherwise make them
372 Freely Available, such as by posting said modifications to Usenet or
373 an equivalent medium, or placing the modifications on a major archive
374 site such as uunet.uu.net, or by allowing the Copyright Holder to include
375 your modifications in the Standard Version of the Package.
377 b) use the modified Package only within your corporation or organization.
379 c) rename any non-standard executables so the names do not conflict
380 with standard executables, which must also be provided, and provide
381 a separate manual page for each non-standard executable that clearly
382 documents how it differs from the Standard Version.
384 d) make other distribution arrangements with the Copyright Holder.
386 4. You may distribute the programs of this Package in object code or
387 executable form, provided that you do at least ONE of the following:
389 a) distribute a Standard Version of the executables and library files,
390 together with instructions (in the manual page or equivalent) on where
391 to get the Standard Version.
393 b) accompany the distribution with the machine-readable source of
394 the Package with your modifications.
396 c) give non-standard executables non-standard names, and clearly
397 document the differences in manual pages (or equivalent), together
398 with instructions on where to get the Standard Version.
400 d) make other distribution arrangements with the Copyright Holder.
402 5. You may charge a reasonable copying fee for any distribution of this
403 Package. You may charge any fee you choose for support of this
404 Package. You may not charge a fee for this Package itself. However,
405 you may distribute this Package in aggregate with other (possibly
406 commercial) programs as part of a larger (possibly commercial) software
407 distribution provided that you do not advertise this Package as a
408 product of your own. You may embed this Package's interpreter within
409 an executable of yours (by linking); this shall be construed as a mere
410 form of aggregation, provided that the complete Standard Version of the
411 interpreter is so embedded.
413 6. The scripts and library files supplied as input to or produced as
414 output from the programs of this Package do not automatically fall
415 under the copyright of this Package, but belong to whoever generated
416 them, and may be sold commercially, and may be aggregated with this
417 Package. If such scripts or library files are aggregated with this
418 Package via the so-called "undump" or "unexec" methods of producing a
419 binary executable image, then distribution of such an image shall
420 neither be construed as a distribution of this Package nor shall it
421 fall under the restrictions of Paragraphs 3 and 4, provided that you do
422 not represent such an executable image as a Standard Version of this
425 7. C subroutines (or comparably compiled subroutines in other
426 languages) supplied by you and linked into this Package in order to
427 emulate subroutines and variables of the language defined by this
428 Package shall not be considered part of this Package, but are the
429 equivalent of input as in Paragraph 6, provided these subroutines do
430 not change the language in any way that would cause it to fail the
431 regression tests for the language.
433 8. Aggregation of this Package with a commercial distribution is always
434 permitted provided that the use of this Package is embedded; that is,
435 when no overt attempt is made to make this Package's interfaces visible
436 to the end user of the commercial distribution. Such use shall not be
437 construed as a distribution of this Package.
439 9. The name of the Copyright Holder may not be used to endorse or promote
440 products derived from this software without specific prior written permission.
442 10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
443 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
444 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.