1 This library is free software; you may redistribute it and/or modify it
2 under the same terms as Perl itself.
4 ===========================================================================
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of either:
9 a. the GNU General Public License as published by the Free
10 Software Foundation; either version 1, or (at your option) any
13 b. the "Artistic License" which comes with this Kit.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
18 the GNU General Public License or the Artistic License for more details.
20 You should have received a copy of the Artistic License with this
21 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
23 You should also have received a copy of the GNU General Public License
24 along with this program in the file named "Copying". If not, write to the
25 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 Boston, MA 02110-1301, USA or visit their web page on the internet at
27 https://www.gnu.org/copyleft/gpl.html.
29 For those of you that choose to use the GNU General Public License,
30 my interpretation of the GNU General Public License is that no Perl
31 script falls under the terms of the GPL unless you explicitly put
32 said script under the terms of the GPL yourself. Furthermore, any
33 object code linked with perl does not automatically fall under the
34 terms of the GPL, provided such object code only adds definitions
35 of subroutines and variables, and does not otherwise impair the
36 resulting interpreter from executing any standard Perl script. I
37 consider linking in C subroutines in this manner to be the moral
38 equivalent of defining subroutines in the Perl language itself. You
39 may sell such an object file as proprietary provided that you provide
40 or offer to provide the Perl source, as specified by the GNU General
41 Public License. (This is merely an alternate way of specifying input
42 to the program.) You may also sell a binary produced by the dumping of
43 a running Perl script that belongs to you, provided that you provide or
44 offer to provide the Perl source as specified by the GPL. (The
45 fact that a Perl interpreter and your code are in the same binary file
46 is, in this case, a form of mere aggregation.) This is my interpretation
47 of the GPL. If you still have concerns or difficulties understanding
48 my intent, feel free to contact me. Of course, the Artistic License
49 spells all this out for your protection, so you may prefer to use that.
52 --- Copying ---------------------------------------------------------------
54 GNU GENERAL PUBLIC LICENSE
55 Version 1, February 1989
57 Copyright (C) 1989 Free Software Foundation, Inc.
58 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
60 Everyone is permitted to copy and distribute verbatim copies
61 of this license document, but changing it is not allowed.
65 The license agreements of most software companies try to keep users
66 at the mercy of those companies. By contrast, our General Public
67 License is intended to guarantee your freedom to share and change free
68 software--to make sure the software is free for all its users. The
69 General Public License applies to the Free Software Foundation's
70 software and to any other program whose authors commit to using it.
71 You can use it for your programs, too.
73 When we speak of free software, we are referring to freedom, not
74 price. Specifically, the General Public License is designed to make
75 sure that you have the freedom to give away or sell copies of free
76 software, that you receive source code or can get it if you want it,
77 that you can change the software or use pieces of it in new free
78 programs; and that you know you can do these things.
80 To protect your rights, we need to make restrictions that forbid
81 anyone to deny you these rights or to ask you to surrender the rights.
82 These restrictions translate to certain responsibilities for you if you
83 distribute copies of the software, or if you modify it.
85 For example, if you distribute copies of a such a program, whether
86 gratis or for a fee, you must give the recipients all the rights that
87 you have. You must make sure that they, too, receive or can get the
88 source code. And you must tell them their rights.
90 We protect your rights with two steps: (1) copyright the software, and
91 (2) offer you this license which gives you legal permission to copy,
92 distribute and/or modify the software.
94 Also, for each author's protection and ours, we want to make certain
95 that everyone understands that there is no warranty for this free
96 software. If the software is modified by someone else and passed on, we
97 want its recipients to know that what they have is not the original, so
98 that any problems introduced by others will not reflect on the original
101 The precise terms and conditions for copying, distribution and
104 GNU GENERAL PUBLIC LICENSE
105 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
107 0. This License Agreement applies to any program or other work which
108 contains a notice placed by the copyright holder saying it may be
109 distributed under the terms of this General Public License. The
110 "Program", below, refers to any such program or work, and a "work based
111 on the Program" means either the Program or any work containing the
112 Program or a portion of it, either verbatim or with modifications. Each
113 licensee is addressed as "you".
115 1. You may copy and distribute verbatim copies of the Program's source
116 code as you receive it, in any medium, provided that you conspicuously and
117 appropriately publish on each copy an appropriate copyright notice and
118 disclaimer of warranty; keep intact all the notices that refer to this
119 General Public License and to the absence of any warranty; and give any
120 other recipients of the Program a copy of this General Public License
121 along with the Program. You may charge a fee for the physical act of
124 2. You may modify your copy or copies of the Program or any portion of
125 it, and copy and distribute such modifications under the terms of Paragraph
126 1 above, provided that you also do the following:
128 a) cause the modified files to carry prominent notices stating that
129 you changed the files and the date of any change; and
131 b) cause the whole of any work that you distribute or publish, that
132 in whole or in part contains the Program or any part thereof, either
133 with or without modifications, to be licensed at no charge to all
134 third parties under the terms of this General Public License (except
135 that you may choose to grant warranty protection to some or all
136 third parties, at your option).
138 c) If the modified program normally reads commands interactively when
139 run, you must cause it, when started running for such interactive use
140 in the simplest and most usual way, to print or display an
141 announcement including an appropriate copyright notice and a notice
142 that there is no warranty (or else, saying that you provide a
143 warranty) and that users may redistribute the program under these
144 conditions, and telling the user how to view a copy of this General
147 d) You may charge a fee for the physical act of transferring a
148 copy, and you may at your option offer warranty protection in
151 Mere aggregation of another independent work with the Program (or its
152 derivative) on a volume of a storage or distribution medium does not bring
153 the other work under the scope of these terms.
155 3. You may copy and distribute the Program (or a portion or derivative of
156 it, under Paragraph 2) in object code or executable form under the terms of
157 Paragraphs 1 and 2 above provided that you also do one of the following:
159 a) accompany it with the complete corresponding machine-readable
160 source code, which must be distributed under the terms of
161 Paragraphs 1 and 2 above; or,
163 b) accompany it with a written offer, valid for at least three
164 years, to give any third party free (except for a nominal charge
165 for the cost of distribution) a complete machine-readable copy of the
166 corresponding source code, to be distributed under the terms of
167 Paragraphs 1 and 2 above; or,
169 c) accompany it with the information you received as to where the
170 corresponding source code may be obtained. (This alternative is
171 allowed only for noncommercial distribution and only if you
172 received the program in object code or executable form alone.)
174 Source code for a work means the preferred form of the work for making
175 modifications to it. For an executable file, complete source code means
176 all the source code for all modules it contains; but, as a special
177 exception, it need not include source code for modules which are standard
178 libraries that accompany the operating system on which the executable
179 file runs, or for standard header files or definitions files that
180 accompany that operating system.
182 4. You may not copy, modify, sublicense, distribute or transfer the
183 Program except as expressly provided under this General Public License.
184 Any attempt otherwise to copy, modify, sublicense, distribute or transfer
185 the Program is void, and will automatically terminate your rights to use
186 the Program under this License. However, parties who have received
187 copies, or rights to use copies, from you under this General Public
188 License will not have their licenses terminated so long as such parties
189 remain in full compliance.
191 5. By copying, distributing or modifying the Program (or any work based
192 on the Program) you indicate your acceptance of this license to do so,
193 and all its terms and conditions.
195 6. Each time you redistribute the Program (or any work based on the
196 Program), the recipient automatically receives a license from the original
197 licensor to copy, distribute or modify the Program subject to these
198 terms and conditions. You may not impose any further restrictions on the
199 recipients' exercise of the rights granted herein.
201 7. The Free Software Foundation may publish revised and/or new versions
202 of the General Public License from time to time. Such new versions will
203 be similar in spirit to the present version, but may differ in detail to
204 address new problems or concerns.
206 Each version is given a distinguishing version number. If the Program
207 specifies a version number of the license which applies to it and "any
208 later version", you have the option of following the terms and conditions
209 either of that version or of any later version published by the Free
210 Software Foundation. If the Program does not specify a version number of
211 the license, you may choose any version ever published by the Free Software
214 8. If you wish to incorporate parts of the Program into other free
215 programs whose distribution conditions are different, write to the author
216 to ask for permission. For software which is copyrighted by the Free
217 Software Foundation, write to the Free Software Foundation; we sometimes
218 make exceptions for this. Our decision will be guided by the two goals
219 of preserving the free status of all derivatives of our free software and
220 of promoting the sharing and reuse of software generally.
224 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
225 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
226 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
227 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
228 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
229 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
230 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
231 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
232 REPAIR OR CORRECTION.
234 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
235 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
236 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
237 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
238 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
239 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
240 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
241 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
242 POSSIBILITY OF SUCH DAMAGES.
244 END OF TERMS AND CONDITIONS
246 Appendix: How to Apply These Terms to Your New Programs
248 If you develop a new program, and you want it to be of the greatest
249 possible use to humanity, the best way to achieve this is to make it
250 free software which everyone can redistribute and change under these
253 To do so, attach the following notices to the program. It is safest to
254 attach them to the start of each source file to most effectively convey
255 the exclusion of warranty; and each file should have at least the
256 "copyright" line and a pointer to where the full notice is found.
258 <one line to give the program's name and a brief idea of what it does.>
259 Copyright (C) 19yy <name of author>
261 This program is free software; you can redistribute it and/or modify
262 it under the terms of the GNU General Public License as published by
263 the Free Software Foundation; either version 1, or (at your option)
266 This program is distributed in the hope that it will be useful,
267 but WITHOUT ANY WARRANTY; without even the implied warranty of
268 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
269 GNU General Public License for more details.
271 You should have received a copy of the GNU General Public License
272 along with this program; if not, write to the Free Software
273 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
276 Also add information on how to contact you by electronic and paper mail.
278 If the program is interactive, make it output a short notice like this
279 when it starts in an interactive mode:
281 Gnomovision version 69, Copyright (C) 19xx name of author
282 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
283 This is free software, and you are welcome to redistribute it
284 under certain conditions; type `show c' for details.
286 The hypothetical commands `show w' and `show c' should show the
287 appropriate parts of the General Public License. Of course, the
288 commands you use may be called something other than `show w' and `show
289 c'; they could even be mouse-clicks or menu items--whatever suits your
292 You should also get your employer (if you work as a programmer) or your
293 school, if any, to sign a "copyright disclaimer" for the program, if
294 necessary. Here a sample; alter the names:
296 Yoyodyne, Inc., hereby disclaims all copyright interest in the
297 program `Gnomovision' (a program to direct compilers to make passes
298 at assemblers) written by James Hacker.
300 <signature of Ty Coon>, 1 April 1989
301 Ty Coon, President of Vice
303 That's all there is to it!
306 --- Artistic --------------------------------------------------------------
308 The "Artistic License"
312 The intent of this document is to state the conditions under which a
313 Package may be copied, such that the Copyright Holder maintains some
314 semblance of artistic control over the development of the package,
315 while giving the users of the package the right to use and distribute
316 the Package in a more-or-less customary fashion, plus the right to make
317 reasonable modifications.
321 "Package" refers to the collection of files distributed by the
322 Copyright Holder, and derivatives of that collection of files
323 created through textual modification.
325 "Standard Version" refers to such a Package if it has not been
326 modified, or has been modified in accordance with the wishes
327 of the Copyright Holder as specified below.
329 "Copyright Holder" is whoever is named in the copyright or
330 copyrights for the package.
332 "You" is you, if you're thinking about copying or distributing
335 "Reasonable copying fee" is whatever you can justify on the
336 basis of media cost, duplication charges, time of people involved,
337 and so on. (You will not be required to justify it to the
338 Copyright Holder, but only to the computing community at large
339 as a market that must bear the fee.)
341 "Freely Available" means that no fee is charged for the item
342 itself, though there may be fees involved in handling the item.
343 It also means that recipients of the item may redistribute it
344 under the same conditions they received it.
346 1. You may make and give away verbatim copies of the source form of the
347 Standard Version of this Package without restriction, provided that you
348 duplicate all of the original copyright notices and associated disclaimers.
350 2. You may apply bug fixes, portability fixes and other modifications
351 derived from the Public Domain or from the Copyright Holder. A Package
352 modified in such a way shall still be considered the Standard Version.
354 3. You may otherwise modify your copy of this Package in any way, provided
355 that you insert a prominent notice in each changed file stating how and
356 when you changed that file, and provided that you do at least ONE of the
359 a) place your modifications in the Public Domain or otherwise make them
360 Freely Available, such as by posting said modifications to Usenet or
361 an equivalent medium, or placing the modifications on a major archive
362 site such as uunet.uu.net, or by allowing the Copyright Holder to include
363 your modifications in the Standard Version of the Package.
365 b) use the modified Package only within your corporation or organization.
367 c) rename any non-standard executables so the names do not conflict
368 with standard executables, which must also be provided, and provide
369 a separate manual page for each non-standard executable that clearly
370 documents how it differs from the Standard Version.
372 d) make other distribution arrangements with the Copyright Holder.
374 4. You may distribute the programs of this Package in object code or
375 executable form, provided that you do at least ONE of the following:
377 a) distribute a Standard Version of the executables and library files,
378 together with instructions (in the manual page or equivalent) on where
379 to get the Standard Version.
381 b) accompany the distribution with the machine-readable source of
382 the Package with your modifications.
384 c) give non-standard executables non-standard names, and clearly
385 document the differences in manual pages (or equivalent), together
386 with instructions on where to get the Standard Version.
388 d) make other distribution arrangements with the Copyright Holder.
390 5. You may charge a reasonable copying fee for any distribution of this
391 Package. You may charge any fee you choose for support of this
392 Package. You may not charge a fee for this Package itself. However,
393 you may distribute this Package in aggregate with other (possibly
394 commercial) programs as part of a larger (possibly commercial) software
395 distribution provided that you do not advertise this Package as a
396 product of your own. You may embed this Package's interpreter within
397 an executable of yours (by linking); this shall be construed as a mere
398 form of aggregation, provided that the complete Standard Version of the
399 interpreter is so embedded.
401 6. The scripts and library files supplied as input to or produced as
402 output from the programs of this Package do not automatically fall
403 under the copyright of this Package, but belong to whoever generated
404 them, and may be sold commercially, and may be aggregated with this
405 Package. If such scripts or library files are aggregated with this
406 Package via the so-called "undump" or "unexec" methods of producing a
407 binary executable image, then distribution of such an image shall
408 neither be construed as a distribution of this Package nor shall it
409 fall under the restrictions of Paragraphs 3 and 4, provided that you do
410 not represent such an executable image as a Standard Version of this
413 7. C subroutines (or comparably compiled subroutines in other
414 languages) supplied by you and linked into this Package in order to
415 emulate subroutines and variables of the language defined by this
416 Package shall not be considered part of this Package, but are the
417 equivalent of input as in Paragraph 6, provided these subroutines do
418 not change the language in any way that would cause it to fail the
419 regression tests for the language.
421 8. Aggregation of this Package with a commercial distribution is always
422 permitted provided that the use of this Package is embedded; that is,
423 when no overt attempt is made to make this Package's interfaces visible
424 to the end user of the commercial distribution. Such use shall not be
425 construed as a distribution of this Package.
427 9. The name of the Copyright Holder may not be used to endorse or promote
428 products derived from this software without specific prior written permission.
430 10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
431 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
432 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.