2 Copyright (C) 2009-2023 by H.Merijn Brand
3 Copyright (C) 2004-2009 by Jeff Zucker
4 Copyright (C) 1998-2004 by Jochen Wiedmann
8 You may distribute this module under the terms of either the GNU
9 General Public License or the Artistic License, as specified in
12 ===========================================================================
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of either:
17 a. the GNU General Public License as published by the Free
18 Software Foundation; either version 1, or (at your option) any
21 b. the "Artistic License" which comes with this Kit.
23 This program is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
26 the GNU General Public License or the Artistic License for more details.
28 You should have received a copy of the Artistic License with this
29 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
31 You should also have received a copy of the GNU General Public License
32 along with this program in the file named "Copying". If not, write to the
33 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
34 Boston, MA 02110-1301, USA or visit their web page on the internet at
35 https://www.gnu.org/copyleft/gpl.html.
37 For those of you that choose to use the GNU General Public License,
38 my interpretation of the GNU General Public License is that no Perl
39 script falls under the terms of the GPL unless you explicitly put
40 said script under the terms of the GPL yourself. Furthermore, any
41 object code linked with perl does not automatically fall under the
42 terms of the GPL, provided such object code only adds definitions
43 of subroutines and variables, and does not otherwise impair the
44 resulting interpreter from executing any standard Perl script. I
45 consider linking in C subroutines in this manner to be the moral
46 equivalent of defining subroutines in the Perl language itself. You
47 may sell such an object file as proprietary provided that you provide
48 or offer to provide the Perl source, as specified by the GNU General
49 Public License. (This is merely an alternate way of specifying input
50 to the program.) You may also sell a binary produced by the dumping of
51 a running Perl script that belongs to you, provided that you provide or
52 offer to provide the Perl source as specified by the GPL. (The
53 fact that a Perl interpreter and your code are in the same binary file
54 is, in this case, a form of mere aggregation.) This is my interpretation
55 of the GPL. If you still have concerns or difficulties understanding
56 my intent, feel free to contact me. Of course, the Artistic License
57 spells all this out for your protection, so you may prefer to use that.
60 --- Copying ---------------------------------------------------------------
62 GNU GENERAL PUBLIC LICENSE
63 Version 1, February 1989
65 Copyright (C) 1989 Free Software Foundation, Inc.
66 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
68 Everyone is permitted to copy and distribute verbatim copies
69 of this license document, but changing it is not allowed.
73 The license agreements of most software companies try to keep users
74 at the mercy of those companies. By contrast, our General Public
75 License is intended to guarantee your freedom to share and change free
76 software--to make sure the software is free for all its users. The
77 General Public License applies to the Free Software Foundation's
78 software and to any other program whose authors commit to using it.
79 You can use it for your programs, too.
81 When we speak of free software, we are referring to freedom, not
82 price. Specifically, the General Public License is designed to make
83 sure that you have the freedom to give away or sell copies of free
84 software, that you receive source code or can get it if you want it,
85 that you can change the software or use pieces of it in new free
86 programs; and that you know you can do these things.
88 To protect your rights, we need to make restrictions that forbid
89 anyone to deny you these rights or to ask you to surrender the rights.
90 These restrictions translate to certain responsibilities for you if you
91 distribute copies of the software, or if you modify it.
93 For example, if you distribute copies of a such a program, whether
94 gratis or for a fee, you must give the recipients all the rights that
95 you have. You must make sure that they, too, receive or can get the
96 source code. And you must tell them their rights.
98 We protect your rights with two steps: (1) copyright the software, and
99 (2) offer you this license which gives you legal permission to copy,
100 distribute and/or modify the software.
102 Also, for each author's protection and ours, we want to make certain
103 that everyone understands that there is no warranty for this free
104 software. If the software is modified by someone else and passed on, we
105 want its recipients to know that what they have is not the original, so
106 that any problems introduced by others will not reflect on the original
107 authors' reputations.
109 The precise terms and conditions for copying, distribution and
112 GNU GENERAL PUBLIC LICENSE
113 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
115 0. This License Agreement applies to any program or other work which
116 contains a notice placed by the copyright holder saying it may be
117 distributed under the terms of this General Public License. The
118 "Program", below, refers to any such program or work, and a "work based
119 on the Program" means either the Program or any work containing the
120 Program or a portion of it, either verbatim or with modifications. Each
121 licensee is addressed as "you".
123 1. You may copy and distribute verbatim copies of the Program's source
124 code as you receive it, in any medium, provided that you conspicuously and
125 appropriately publish on each copy an appropriate copyright notice and
126 disclaimer of warranty; keep intact all the notices that refer to this
127 General Public License and to the absence of any warranty; and give any
128 other recipients of the Program a copy of this General Public License
129 along with the Program. You may charge a fee for the physical act of
132 2. You may modify your copy or copies of the Program or any portion of
133 it, and copy and distribute such modifications under the terms of Paragraph
134 1 above, provided that you also do the following:
136 a) cause the modified files to carry prominent notices stating that
137 you changed the files and the date of any change; and
139 b) cause the whole of any work that you distribute or publish, that
140 in whole or in part contains the Program or any part thereof, either
141 with or without modifications, to be licensed at no charge to all
142 third parties under the terms of this General Public License (except
143 that you may choose to grant warranty protection to some or all
144 third parties, at your option).
146 c) If the modified program normally reads commands interactively when
147 run, you must cause it, when started running for such interactive use
148 in the simplest and most usual way, to print or display an
149 announcement including an appropriate copyright notice and a notice
150 that there is no warranty (or else, saying that you provide a
151 warranty) and that users may redistribute the program under these
152 conditions, and telling the user how to view a copy of this General
155 d) You may charge a fee for the physical act of transferring a
156 copy, and you may at your option offer warranty protection in
159 Mere aggregation of another independent work with the Program (or its
160 derivative) on a volume of a storage or distribution medium does not bring
161 the other work under the scope of these terms.
163 3. You may copy and distribute the Program (or a portion or derivative of
164 it, under Paragraph 2) in object code or executable form under the terms of
165 Paragraphs 1 and 2 above provided that you also do one of the following:
167 a) accompany it with the complete corresponding machine-readable
168 source code, which must be distributed under the terms of
169 Paragraphs 1 and 2 above; or,
171 b) accompany it with a written offer, valid for at least three
172 years, to give any third party free (except for a nominal charge
173 for the cost of distribution) a complete machine-readable copy of the
174 corresponding source code, to be distributed under the terms of
175 Paragraphs 1 and 2 above; or,
177 c) accompany it with the information you received as to where the
178 corresponding source code may be obtained. (This alternative is
179 allowed only for noncommercial distribution and only if you
180 received the program in object code or executable form alone.)
182 Source code for a work means the preferred form of the work for making
183 modifications to it. For an executable file, complete source code means
184 all the source code for all modules it contains; but, as a special
185 exception, it need not include source code for modules which are standard
186 libraries that accompany the operating system on which the executable
187 file runs, or for standard header files or definitions files that
188 accompany that operating system.
190 4. You may not copy, modify, sublicense, distribute or transfer the
191 Program except as expressly provided under this General Public License.
192 Any attempt otherwise to copy, modify, sublicense, distribute or transfer
193 the Program is void, and will automatically terminate your rights to use
194 the Program under this License. However, parties who have received
195 copies, or rights to use copies, from you under this General Public
196 License will not have their licenses terminated so long as such parties
197 remain in full compliance.
199 5. By copying, distributing or modifying the Program (or any work based
200 on the Program) you indicate your acceptance of this license to do so,
201 and all its terms and conditions.
203 6. Each time you redistribute the Program (or any work based on the
204 Program), the recipient automatically receives a license from the original
205 licensor to copy, distribute or modify the Program subject to these
206 terms and conditions. You may not impose any further restrictions on the
207 recipients' exercise of the rights granted herein.
209 7. The Free Software Foundation may publish revised and/or new versions
210 of the General Public License from time to time. Such new versions will
211 be similar in spirit to the present version, but may differ in detail to
212 address new problems or concerns.
214 Each version is given a distinguishing version number. If the Program
215 specifies a version number of the license which applies to it and "any
216 later version", you have the option of following the terms and conditions
217 either of that version or of any later version published by the Free
218 Software Foundation. If the Program does not specify a version number of
219 the license, you may choose any version ever published by the Free Software
222 8. If you wish to incorporate parts of the Program into other free
223 programs whose distribution conditions are different, write to the author
224 to ask for permission. For software which is copyrighted by the Free
225 Software Foundation, write to the Free Software Foundation; we sometimes
226 make exceptions for this. Our decision will be guided by the two goals
227 of preserving the free status of all derivatives of our free software and
228 of promoting the sharing and reuse of software generally.
232 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
233 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
234 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
235 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
236 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
237 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
238 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
239 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
240 REPAIR OR CORRECTION.
242 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
243 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
244 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
245 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
246 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
247 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
248 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
249 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
250 POSSIBILITY OF SUCH DAMAGES.
252 END OF TERMS AND CONDITIONS
254 Appendix: How to Apply These Terms to Your New Programs
256 If you develop a new program, and you want it to be of the greatest
257 possible use to humanity, the best way to achieve this is to make it
258 free software which everyone can redistribute and change under these
261 To do so, attach the following notices to the program. It is safest to
262 attach them to the start of each source file to most effectively convey
263 the exclusion of warranty; and each file should have at least the
264 "copyright" line and a pointer to where the full notice is found.
266 <one line to give the program's name and a brief idea of what it does.>
267 Copyright (C) 19yy <name of author>
269 This program is free software; you can redistribute it and/or modify
270 it under the terms of the GNU General Public License as published by
271 the Free Software Foundation; either version 1, or (at your option)
274 This program is distributed in the hope that it will be useful,
275 but WITHOUT ANY WARRANTY; without even the implied warranty of
276 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
277 GNU General Public License for more details.
279 You should have received a copy of the GNU General Public License
280 along with this program; if not, write to the Free Software
281 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
284 Also add information on how to contact you by electronic and paper mail.
286 If the program is interactive, make it output a short notice like this
287 when it starts in an interactive mode:
289 Gnomovision version 69, Copyright (C) 19xx name of author
290 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
291 This is free software, and you are welcome to redistribute it
292 under certain conditions; type `show c' for details.
294 The hypothetical commands `show w' and `show c' should show the
295 appropriate parts of the General Public License. Of course, the
296 commands you use may be called something other than `show w' and `show
297 c'; they could even be mouse-clicks or menu items--whatever suits your
300 You should also get your employer (if you work as a programmer) or your
301 school, if any, to sign a "copyright disclaimer" for the program, if
302 necessary. Here a sample; alter the names:
304 Yoyodyne, Inc., hereby disclaims all copyright interest in the
305 program `Gnomovision' (a program to direct compilers to make passes
306 at assemblers) written by James Hacker.
308 <signature of Ty Coon>, 1 April 1989
309 Ty Coon, President of Vice
311 That's all there is to it!
314 --- Artistic --------------------------------------------------------------
316 The "Artistic License"
320 The intent of this document is to state the conditions under which a
321 Package may be copied, such that the Copyright Holder maintains some
322 semblance of artistic control over the development of the package,
323 while giving the users of the package the right to use and distribute
324 the Package in a more-or-less customary fashion, plus the right to make
325 reasonable modifications.
329 "Package" refers to the collection of files distributed by the
330 Copyright Holder, and derivatives of that collection of files
331 created through textual modification.
333 "Standard Version" refers to such a Package if it has not been
334 modified, or has been modified in accordance with the wishes
335 of the Copyright Holder as specified below.
337 "Copyright Holder" is whoever is named in the copyright or
338 copyrights for the package.
340 "You" is you, if you're thinking about copying or distributing
343 "Reasonable copying fee" is whatever you can justify on the
344 basis of media cost, duplication charges, time of people involved,
345 and so on. (You will not be required to justify it to the
346 Copyright Holder, but only to the computing community at large
347 as a market that must bear the fee.)
349 "Freely Available" means that no fee is charged for the item
350 itself, though there may be fees involved in handling the item.
351 It also means that recipients of the item may redistribute it
352 under the same conditions they received it.
354 1. You may make and give away verbatim copies of the source form of the
355 Standard Version of this Package without restriction, provided that you
356 duplicate all of the original copyright notices and associated disclaimers.
358 2. You may apply bug fixes, portability fixes and other modifications
359 derived from the Public Domain or from the Copyright Holder. A Package
360 modified in such a way shall still be considered the Standard Version.
362 3. You may otherwise modify your copy of this Package in any way, provided
363 that you insert a prominent notice in each changed file stating how and
364 when you changed that file, and provided that you do at least ONE of the
367 a) place your modifications in the Public Domain or otherwise make them
368 Freely Available, such as by posting said modifications to Usenet or
369 an equivalent medium, or placing the modifications on a major archive
370 site such as uunet.uu.net, or by allowing the Copyright Holder to include
371 your modifications in the Standard Version of the Package.
373 b) use the modified Package only within your corporation or organization.
375 c) rename any non-standard executables so the names do not conflict
376 with standard executables, which must also be provided, and provide
377 a separate manual page for each non-standard executable that clearly
378 documents how it differs from the Standard Version.
380 d) make other distribution arrangements with the Copyright Holder.
382 4. You may distribute the programs of this Package in object code or
383 executable form, provided that you do at least ONE of the following:
385 a) distribute a Standard Version of the executables and library files,
386 together with instructions (in the manual page or equivalent) on where
387 to get the Standard Version.
389 b) accompany the distribution with the machine-readable source of
390 the Package with your modifications.
392 c) give non-standard executables non-standard names, and clearly
393 document the differences in manual pages (or equivalent), together
394 with instructions on where to get the Standard Version.
396 d) make other distribution arrangements with the Copyright Holder.
398 5. You may charge a reasonable copying fee for any distribution of this
399 Package. You may charge any fee you choose for support of this
400 Package. You may not charge a fee for this Package itself. However,
401 you may distribute this Package in aggregate with other (possibly
402 commercial) programs as part of a larger (possibly commercial) software
403 distribution provided that you do not advertise this Package as a
404 product of your own. You may embed this Package's interpreter within
405 an executable of yours (by linking); this shall be construed as a mere
406 form of aggregation, provided that the complete Standard Version of the
407 interpreter is so embedded.
409 6. The scripts and library files supplied as input to or produced as
410 output from the programs of this Package do not automatically fall
411 under the copyright of this Package, but belong to whoever generated
412 them, and may be sold commercially, and may be aggregated with this
413 Package. If such scripts or library files are aggregated with this
414 Package via the so-called "undump" or "unexec" methods of producing a
415 binary executable image, then distribution of such an image shall
416 neither be construed as a distribution of this Package nor shall it
417 fall under the restrictions of Paragraphs 3 and 4, provided that you do
418 not represent such an executable image as a Standard Version of this
421 7. C subroutines (or comparably compiled subroutines in other
422 languages) supplied by you and linked into this Package in order to
423 emulate subroutines and variables of the language defined by this
424 Package shall not be considered part of this Package, but are the
425 equivalent of input as in Paragraph 6, provided these subroutines do
426 not change the language in any way that would cause it to fail the
427 regression tests for the language.
429 8. Aggregation of this Package with a commercial distribution is always
430 permitted provided that the use of this Package is embedded; that is,
431 when no overt attempt is made to make this Package's interfaces visible
432 to the end user of the commercial distribution. Such use shall not be
433 construed as a distribution of this Package.
435 9. The name of the Copyright Holder may not be used to endorse or promote
436 products derived from this software without specific prior written permission.
438 10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
439 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
440 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.