1 Copyright (c) 1997-2008, Damian Conway. All Rights Reserved.
2 This module is free software. It may be used, redistributed
3 and/or modified under the same terms as Perl itself.
5 ===========================================================================
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of either:
10 a. the GNU General Public License as published by the Free
11 Software Foundation; either version 1, or (at your option) any
14 b. the "Artistic License" which comes with this Kit.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
19 the GNU General Public License or the Artistic License for more details.
21 You should have received a copy of the Artistic License with this
22 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
24 You should also have received a copy of the GNU General Public License
25 along with this program in the file named "Copying". If not, write to the
26 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
27 Boston, MA 02110-1301, USA or visit their web page on the internet at
28 https://www.gnu.org/copyleft/gpl.html.
30 For those of you that choose to use the GNU General Public License,
31 my interpretation of the GNU General Public License is that no Perl
32 script falls under the terms of the GPL unless you explicitly put
33 said script under the terms of the GPL yourself. Furthermore, any
34 object code linked with perl does not automatically fall under the
35 terms of the GPL, provided such object code only adds definitions
36 of subroutines and variables, and does not otherwise impair the
37 resulting interpreter from executing any standard Perl script. I
38 consider linking in C subroutines in this manner to be the moral
39 equivalent of defining subroutines in the Perl language itself. You
40 may sell such an object file as proprietary provided that you provide
41 or offer to provide the Perl source, as specified by the GNU General
42 Public License. (This is merely an alternate way of specifying input
43 to the program.) You may also sell a binary produced by the dumping of
44 a running Perl script that belongs to you, provided that you provide or
45 offer to provide the Perl source as specified by the GPL. (The
46 fact that a Perl interpreter and your code are in the same binary file
47 is, in this case, a form of mere aggregation.) This is my interpretation
48 of the GPL. If you still have concerns or difficulties understanding
49 my intent, feel free to contact me. Of course, the Artistic License
50 spells all this out for your protection, so you may prefer to use that.
53 --- Copying ---------------------------------------------------------------
55 GNU GENERAL PUBLIC LICENSE
56 Version 1, February 1989
58 Copyright (C) 1989 Free Software Foundation, Inc.
59 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
61 Everyone is permitted to copy and distribute verbatim copies
62 of this license document, but changing it is not allowed.
66 The license agreements of most software companies try to keep users
67 at the mercy of those companies. By contrast, our General Public
68 License is intended to guarantee your freedom to share and change free
69 software--to make sure the software is free for all its users. The
70 General Public License applies to the Free Software Foundation's
71 software and to any other program whose authors commit to using it.
72 You can use it for your programs, too.
74 When we speak of free software, we are referring to freedom, not
75 price. Specifically, the General Public License is designed to make
76 sure that you have the freedom to give away or sell copies of free
77 software, that you receive source code or can get it if you want it,
78 that you can change the software or use pieces of it in new free
79 programs; and that you know you can do these things.
81 To protect your rights, we need to make restrictions that forbid
82 anyone to deny you these rights or to ask you to surrender the rights.
83 These restrictions translate to certain responsibilities for you if you
84 distribute copies of the software, or if you modify it.
86 For example, if you distribute copies of a such a program, whether
87 gratis or for a fee, you must give the recipients all the rights that
88 you have. You must make sure that they, too, receive or can get the
89 source code. And you must tell them their rights.
91 We protect your rights with two steps: (1) copyright the software, and
92 (2) offer you this license which gives you legal permission to copy,
93 distribute and/or modify the software.
95 Also, for each author's protection and ours, we want to make certain
96 that everyone understands that there is no warranty for this free
97 software. If the software is modified by someone else and passed on, we
98 want its recipients to know that what they have is not the original, so
99 that any problems introduced by others will not reflect on the original
100 authors' reputations.
102 The precise terms and conditions for copying, distribution and
105 GNU GENERAL PUBLIC LICENSE
106 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
108 0. This License Agreement applies to any program or other work which
109 contains a notice placed by the copyright holder saying it may be
110 distributed under the terms of this General Public License. The
111 "Program", below, refers to any such program or work, and a "work based
112 on the Program" means either the Program or any work containing the
113 Program or a portion of it, either verbatim or with modifications. Each
114 licensee is addressed as "you".
116 1. You may copy and distribute verbatim copies of the Program's source
117 code as you receive it, in any medium, provided that you conspicuously and
118 appropriately publish on each copy an appropriate copyright notice and
119 disclaimer of warranty; keep intact all the notices that refer to this
120 General Public License and to the absence of any warranty; and give any
121 other recipients of the Program a copy of this General Public License
122 along with the Program. You may charge a fee for the physical act of
125 2. You may modify your copy or copies of the Program or any portion of
126 it, and copy and distribute such modifications under the terms of Paragraph
127 1 above, provided that you also do the following:
129 a) cause the modified files to carry prominent notices stating that
130 you changed the files and the date of any change; and
132 b) cause the whole of any work that you distribute or publish, that
133 in whole or in part contains the Program or any part thereof, either
134 with or without modifications, to be licensed at no charge to all
135 third parties under the terms of this General Public License (except
136 that you may choose to grant warranty protection to some or all
137 third parties, at your option).
139 c) If the modified program normally reads commands interactively when
140 run, you must cause it, when started running for such interactive use
141 in the simplest and most usual way, to print or display an
142 announcement including an appropriate copyright notice and a notice
143 that there is no warranty (or else, saying that you provide a
144 warranty) and that users may redistribute the program under these
145 conditions, and telling the user how to view a copy of this General
148 d) You may charge a fee for the physical act of transferring a
149 copy, and you may at your option offer warranty protection in
152 Mere aggregation of another independent work with the Program (or its
153 derivative) on a volume of a storage or distribution medium does not bring
154 the other work under the scope of these terms.
156 3. You may copy and distribute the Program (or a portion or derivative of
157 it, under Paragraph 2) in object code or executable form under the terms of
158 Paragraphs 1 and 2 above provided that you also do one of the following:
160 a) accompany it with the complete corresponding machine-readable
161 source code, which must be distributed under the terms of
162 Paragraphs 1 and 2 above; or,
164 b) accompany it with a written offer, valid for at least three
165 years, to give any third party free (except for a nominal charge
166 for the cost of distribution) a complete machine-readable copy of the
167 corresponding source code, to be distributed under the terms of
168 Paragraphs 1 and 2 above; or,
170 c) accompany it with the information you received as to where the
171 corresponding source code may be obtained. (This alternative is
172 allowed only for noncommercial distribution and only if you
173 received the program in object code or executable form alone.)
175 Source code for a work means the preferred form of the work for making
176 modifications to it. For an executable file, complete source code means
177 all the source code for all modules it contains; but, as a special
178 exception, it need not include source code for modules which are standard
179 libraries that accompany the operating system on which the executable
180 file runs, or for standard header files or definitions files that
181 accompany that operating system.
183 4. You may not copy, modify, sublicense, distribute or transfer the
184 Program except as expressly provided under this General Public License.
185 Any attempt otherwise to copy, modify, sublicense, distribute or transfer
186 the Program is void, and will automatically terminate your rights to use
187 the Program under this License. However, parties who have received
188 copies, or rights to use copies, from you under this General Public
189 License will not have their licenses terminated so long as such parties
190 remain in full compliance.
192 5. By copying, distributing or modifying the Program (or any work based
193 on the Program) you indicate your acceptance of this license to do so,
194 and all its terms and conditions.
196 6. Each time you redistribute the Program (or any work based on the
197 Program), the recipient automatically receives a license from the original
198 licensor to copy, distribute or modify the Program subject to these
199 terms and conditions. You may not impose any further restrictions on the
200 recipients' exercise of the rights granted herein.
202 7. The Free Software Foundation may publish revised and/or new versions
203 of the General Public License from time to time. Such new versions will
204 be similar in spirit to the present version, but may differ in detail to
205 address new problems or concerns.
207 Each version is given a distinguishing version number. If the Program
208 specifies a version number of the license which applies to it and "any
209 later version", you have the option of following the terms and conditions
210 either of that version or of any later version published by the Free
211 Software Foundation. If the Program does not specify a version number of
212 the license, you may choose any version ever published by the Free Software
215 8. If you wish to incorporate parts of the Program into other free
216 programs whose distribution conditions are different, write to the author
217 to ask for permission. For software which is copyrighted by the Free
218 Software Foundation, write to the Free Software Foundation; we sometimes
219 make exceptions for this. Our decision will be guided by the two goals
220 of preserving the free status of all derivatives of our free software and
221 of promoting the sharing and reuse of software generally.
225 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
226 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
227 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
228 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
229 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
230 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
231 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
232 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
233 REPAIR OR CORRECTION.
235 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
236 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
237 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
238 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
239 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
240 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
241 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
242 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
243 POSSIBILITY OF SUCH DAMAGES.
245 END OF TERMS AND CONDITIONS
247 Appendix: How to Apply These Terms to Your New Programs
249 If you develop a new program, and you want it to be of the greatest
250 possible use to humanity, the best way to achieve this is to make it
251 free software which everyone can redistribute and change under these
254 To do so, attach the following notices to the program. It is safest to
255 attach them to the start of each source file to most effectively convey
256 the exclusion of warranty; and each file should have at least the
257 "copyright" line and a pointer to where the full notice is found.
259 <one line to give the program's name and a brief idea of what it does.>
260 Copyright (C) 19yy <name of author>
262 This program is free software; you can redistribute it and/or modify
263 it under the terms of the GNU General Public License as published by
264 the Free Software Foundation; either version 1, or (at your option)
267 This program is distributed in the hope that it will be useful,
268 but WITHOUT ANY WARRANTY; without even the implied warranty of
269 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
270 GNU General Public License for more details.
272 You should have received a copy of the GNU General Public License
273 along with this program; if not, write to the Free Software
274 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
277 Also add information on how to contact you by electronic and paper mail.
279 If the program is interactive, make it output a short notice like this
280 when it starts in an interactive mode:
282 Gnomovision version 69, Copyright (C) 19xx name of author
283 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
284 This is free software, and you are welcome to redistribute it
285 under certain conditions; type `show c' for details.
287 The hypothetical commands `show w' and `show c' should show the
288 appropriate parts of the General Public License. Of course, the
289 commands you use may be called something other than `show w' and `show
290 c'; they could even be mouse-clicks or menu items--whatever suits your
293 You should also get your employer (if you work as a programmer) or your
294 school, if any, to sign a "copyright disclaimer" for the program, if
295 necessary. Here a sample; alter the names:
297 Yoyodyne, Inc., hereby disclaims all copyright interest in the
298 program `Gnomovision' (a program to direct compilers to make passes
299 at assemblers) written by James Hacker.
301 <signature of Ty Coon>, 1 April 1989
302 Ty Coon, President of Vice
304 That's all there is to it!
307 --- Artistic --------------------------------------------------------------
309 The "Artistic License"
313 The intent of this document is to state the conditions under which a
314 Package may be copied, such that the Copyright Holder maintains some
315 semblance of artistic control over the development of the package,
316 while giving the users of the package the right to use and distribute
317 the Package in a more-or-less customary fashion, plus the right to make
318 reasonable modifications.
322 "Package" refers to the collection of files distributed by the
323 Copyright Holder, and derivatives of that collection of files
324 created through textual modification.
326 "Standard Version" refers to such a Package if it has not been
327 modified, or has been modified in accordance with the wishes
328 of the Copyright Holder as specified below.
330 "Copyright Holder" is whoever is named in the copyright or
331 copyrights for the package.
333 "You" is you, if you're thinking about copying or distributing
336 "Reasonable copying fee" is whatever you can justify on the
337 basis of media cost, duplication charges, time of people involved,
338 and so on. (You will not be required to justify it to the
339 Copyright Holder, but only to the computing community at large
340 as a market that must bear the fee.)
342 "Freely Available" means that no fee is charged for the item
343 itself, though there may be fees involved in handling the item.
344 It also means that recipients of the item may redistribute it
345 under the same conditions they received it.
347 1. You may make and give away verbatim copies of the source form of the
348 Standard Version of this Package without restriction, provided that you
349 duplicate all of the original copyright notices and associated disclaimers.
351 2. You may apply bug fixes, portability fixes and other modifications
352 derived from the Public Domain or from the Copyright Holder. A Package
353 modified in such a way shall still be considered the Standard Version.
355 3. You may otherwise modify your copy of this Package in any way, provided
356 that you insert a prominent notice in each changed file stating how and
357 when you changed that file, and provided that you do at least ONE of the
360 a) place your modifications in the Public Domain or otherwise make them
361 Freely Available, such as by posting said modifications to Usenet or
362 an equivalent medium, or placing the modifications on a major archive
363 site such as uunet.uu.net, or by allowing the Copyright Holder to include
364 your modifications in the Standard Version of the Package.
366 b) use the modified Package only within your corporation or organization.
368 c) rename any non-standard executables so the names do not conflict
369 with standard executables, which must also be provided, and provide
370 a separate manual page for each non-standard executable that clearly
371 documents how it differs from the Standard Version.
373 d) make other distribution arrangements with the Copyright Holder.
375 4. You may distribute the programs of this Package in object code or
376 executable form, provided that you do at least ONE of the following:
378 a) distribute a Standard Version of the executables and library files,
379 together with instructions (in the manual page or equivalent) on where
380 to get the Standard Version.
382 b) accompany the distribution with the machine-readable source of
383 the Package with your modifications.
385 c) give non-standard executables non-standard names, and clearly
386 document the differences in manual pages (or equivalent), together
387 with instructions on where to get the Standard Version.
389 d) make other distribution arrangements with the Copyright Holder.
391 5. You may charge a reasonable copying fee for any distribution of this
392 Package. You may charge any fee you choose for support of this
393 Package. You may not charge a fee for this Package itself. However,
394 you may distribute this Package in aggregate with other (possibly
395 commercial) programs as part of a larger (possibly commercial) software
396 distribution provided that you do not advertise this Package as a
397 product of your own. You may embed this Package's interpreter within
398 an executable of yours (by linking); this shall be construed as a mere
399 form of aggregation, provided that the complete Standard Version of the
400 interpreter is so embedded.
402 6. The scripts and library files supplied as input to or produced as
403 output from the programs of this Package do not automatically fall
404 under the copyright of this Package, but belong to whoever generated
405 them, and may be sold commercially, and may be aggregated with this
406 Package. If such scripts or library files are aggregated with this
407 Package via the so-called "undump" or "unexec" methods of producing a
408 binary executable image, then distribution of such an image shall
409 neither be construed as a distribution of this Package nor shall it
410 fall under the restrictions of Paragraphs 3 and 4, provided that you do
411 not represent such an executable image as a Standard Version of this
414 7. C subroutines (or comparably compiled subroutines in other
415 languages) supplied by you and linked into this Package in order to
416 emulate subroutines and variables of the language defined by this
417 Package shall not be considered part of this Package, but are the
418 equivalent of input as in Paragraph 6, provided these subroutines do
419 not change the language in any way that would cause it to fail the
420 regression tests for the language.
422 8. Aggregation of this Package with a commercial distribution is always
423 permitted provided that the use of this Package is embedded; that is,
424 when no overt attempt is made to make this Package's interfaces visible
425 to the end user of the commercial distribution. Such use shall not be
426 construed as a distribution of this Package.
428 9. The name of the Copyright Holder may not be used to endorse or promote
429 products derived from this software without specific prior written permission.
431 10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
432 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
433 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.