1 Graham Barr wrote most of these components, since 2001 maintained by
2 Mark Overmeer. Copyright is with these authors.
4 This project is free software; you can redistribute it and/or modify it
5 under the same terms as Perl itself.
6 See <http://dev.perl.org/licenses/>
8 ===========================================================================
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of either:
13 a. the GNU General Public License as published by the Free
14 Software Foundation; either version 1, or (at your option) any
17 b. the "Artistic License" which comes with this Kit.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
22 the GNU General Public License or the Artistic License for more details.
24 You should have received a copy of the Artistic License with this
25 Kit, in the file named "Artistic". If not, I'll be glad to provide one.
27 You should also have received a copy of the GNU General Public License
28 along with this program in the file named "Copying". If not, write to the
29 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
30 Boston, MA 02110-1301, USA or visit their web page on the internet at
31 https://www.gnu.org/copyleft/gpl.html.
33 For those of you that choose to use the GNU General Public License,
34 my interpretation of the GNU General Public License is that no Perl
35 script falls under the terms of the GPL unless you explicitly put
36 said script under the terms of the GPL yourself. Furthermore, any
37 object code linked with perl does not automatically fall under the
38 terms of the GPL, provided such object code only adds definitions
39 of subroutines and variables, and does not otherwise impair the
40 resulting interpreter from executing any standard Perl script. I
41 consider linking in C subroutines in this manner to be the moral
42 equivalent of defining subroutines in the Perl language itself. You
43 may sell such an object file as proprietary provided that you provide
44 or offer to provide the Perl source, as specified by the GNU General
45 Public License. (This is merely an alternate way of specifying input
46 to the program.) You may also sell a binary produced by the dumping of
47 a running Perl script that belongs to you, provided that you provide or
48 offer to provide the Perl source as specified by the GPL. (The
49 fact that a Perl interpreter and your code are in the same binary file
50 is, in this case, a form of mere aggregation.) This is my interpretation
51 of the GPL. If you still have concerns or difficulties understanding
52 my intent, feel free to contact me. Of course, the Artistic License
53 spells all this out for your protection, so you may prefer to use that.
56 --- Copying ---------------------------------------------------------------
58 GNU GENERAL PUBLIC LICENSE
59 Version 1, February 1989
61 Copyright (C) 1989 Free Software Foundation, Inc.
62 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
64 Everyone is permitted to copy and distribute verbatim copies
65 of this license document, but changing it is not allowed.
69 The license agreements of most software companies try to keep users
70 at the mercy of those companies. By contrast, our General Public
71 License is intended to guarantee your freedom to share and change free
72 software--to make sure the software is free for all its users. The
73 General Public License applies to the Free Software Foundation's
74 software and to any other program whose authors commit to using it.
75 You can use it for your programs, too.
77 When we speak of free software, we are referring to freedom, not
78 price. Specifically, the General Public License is designed to make
79 sure that you have the freedom to give away or sell copies of free
80 software, that you receive source code or can get it if you want it,
81 that you can change the software or use pieces of it in new free
82 programs; and that you know you can do these things.
84 To protect your rights, we need to make restrictions that forbid
85 anyone to deny you these rights or to ask you to surrender the rights.
86 These restrictions translate to certain responsibilities for you if you
87 distribute copies of the software, or if you modify it.
89 For example, if you distribute copies of a such a program, whether
90 gratis or for a fee, you must give the recipients all the rights that
91 you have. You must make sure that they, too, receive or can get the
92 source code. And you must tell them their rights.
94 We protect your rights with two steps: (1) copyright the software, and
95 (2) offer you this license which gives you legal permission to copy,
96 distribute and/or modify the software.
98 Also, for each author's protection and ours, we want to make certain
99 that everyone understands that there is no warranty for this free
100 software. If the software is modified by someone else and passed on, we
101 want its recipients to know that what they have is not the original, so
102 that any problems introduced by others will not reflect on the original
103 authors' reputations.
105 The precise terms and conditions for copying, distribution and
108 GNU GENERAL PUBLIC LICENSE
109 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
111 0. This License Agreement applies to any program or other work which
112 contains a notice placed by the copyright holder saying it may be
113 distributed under the terms of this General Public License. The
114 "Program", below, refers to any such program or work, and a "work based
115 on the Program" means either the Program or any work containing the
116 Program or a portion of it, either verbatim or with modifications. Each
117 licensee is addressed as "you".
119 1. You may copy and distribute verbatim copies of the Program's source
120 code as you receive it, in any medium, provided that you conspicuously and
121 appropriately publish on each copy an appropriate copyright notice and
122 disclaimer of warranty; keep intact all the notices that refer to this
123 General Public License and to the absence of any warranty; and give any
124 other recipients of the Program a copy of this General Public License
125 along with the Program. You may charge a fee for the physical act of
128 2. You may modify your copy or copies of the Program or any portion of
129 it, and copy and distribute such modifications under the terms of Paragraph
130 1 above, provided that you also do the following:
132 a) cause the modified files to carry prominent notices stating that
133 you changed the files and the date of any change; and
135 b) cause the whole of any work that you distribute or publish, that
136 in whole or in part contains the Program or any part thereof, either
137 with or without modifications, to be licensed at no charge to all
138 third parties under the terms of this General Public License (except
139 that you may choose to grant warranty protection to some or all
140 third parties, at your option).
142 c) If the modified program normally reads commands interactively when
143 run, you must cause it, when started running for such interactive use
144 in the simplest and most usual way, to print or display an
145 announcement including an appropriate copyright notice and a notice
146 that there is no warranty (or else, saying that you provide a
147 warranty) and that users may redistribute the program under these
148 conditions, and telling the user how to view a copy of this General
151 d) You may charge a fee for the physical act of transferring a
152 copy, and you may at your option offer warranty protection in
155 Mere aggregation of another independent work with the Program (or its
156 derivative) on a volume of a storage or distribution medium does not bring
157 the other work under the scope of these terms.
159 3. You may copy and distribute the Program (or a portion or derivative of
160 it, under Paragraph 2) in object code or executable form under the terms of
161 Paragraphs 1 and 2 above provided that you also do one of the following:
163 a) accompany it with the complete corresponding machine-readable
164 source code, which must be distributed under the terms of
165 Paragraphs 1 and 2 above; or,
167 b) accompany it with a written offer, valid for at least three
168 years, to give any third party free (except for a nominal charge
169 for the cost of distribution) a complete machine-readable copy of the
170 corresponding source code, to be distributed under the terms of
171 Paragraphs 1 and 2 above; or,
173 c) accompany it with the information you received as to where the
174 corresponding source code may be obtained. (This alternative is
175 allowed only for noncommercial distribution and only if you
176 received the program in object code or executable form alone.)
178 Source code for a work means the preferred form of the work for making
179 modifications to it. For an executable file, complete source code means
180 all the source code for all modules it contains; but, as a special
181 exception, it need not include source code for modules which are standard
182 libraries that accompany the operating system on which the executable
183 file runs, or for standard header files or definitions files that
184 accompany that operating system.
186 4. You may not copy, modify, sublicense, distribute or transfer the
187 Program except as expressly provided under this General Public License.
188 Any attempt otherwise to copy, modify, sublicense, distribute or transfer
189 the Program is void, and will automatically terminate your rights to use
190 the Program under this License. However, parties who have received
191 copies, or rights to use copies, from you under this General Public
192 License will not have their licenses terminated so long as such parties
193 remain in full compliance.
195 5. By copying, distributing or modifying the Program (or any work based
196 on the Program) you indicate your acceptance of this license to do so,
197 and all its terms and conditions.
199 6. Each time you redistribute the Program (or any work based on the
200 Program), the recipient automatically receives a license from the original
201 licensor to copy, distribute or modify the Program subject to these
202 terms and conditions. You may not impose any further restrictions on the
203 recipients' exercise of the rights granted herein.
205 7. The Free Software Foundation may publish revised and/or new versions
206 of the General Public License from time to time. Such new versions will
207 be similar in spirit to the present version, but may differ in detail to
208 address new problems or concerns.
210 Each version is given a distinguishing version number. If the Program
211 specifies a version number of the license which applies to it and "any
212 later version", you have the option of following the terms and conditions
213 either of that version or of any later version published by the Free
214 Software Foundation. If the Program does not specify a version number of
215 the license, you may choose any version ever published by the Free Software
218 8. If you wish to incorporate parts of the Program into other free
219 programs whose distribution conditions are different, write to the author
220 to ask for permission. For software which is copyrighted by the Free
221 Software Foundation, write to the Free Software Foundation; we sometimes
222 make exceptions for this. Our decision will be guided by the two goals
223 of preserving the free status of all derivatives of our free software and
224 of promoting the sharing and reuse of software generally.
228 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
229 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
230 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
231 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
232 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
233 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
234 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
235 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
236 REPAIR OR CORRECTION.
238 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
239 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
240 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
241 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
242 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
243 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
244 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
245 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
246 POSSIBILITY OF SUCH DAMAGES.
248 END OF TERMS AND CONDITIONS
250 Appendix: How to Apply These Terms to Your New Programs
252 If you develop a new program, and you want it to be of the greatest
253 possible use to humanity, the best way to achieve this is to make it
254 free software which everyone can redistribute and change under these
257 To do so, attach the following notices to the program. It is safest to
258 attach them to the start of each source file to most effectively convey
259 the exclusion of warranty; and each file should have at least the
260 "copyright" line and a pointer to where the full notice is found.
262 <one line to give the program's name and a brief idea of what it does.>
263 Copyright (C) 19yy <name of author>
265 This program is free software; you can redistribute it and/or modify
266 it under the terms of the GNU General Public License as published by
267 the Free Software Foundation; either version 1, or (at your option)
270 This program is distributed in the hope that it will be useful,
271 but WITHOUT ANY WARRANTY; without even the implied warranty of
272 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
273 GNU General Public License for more details.
275 You should have received a copy of the GNU General Public License
276 along with this program; if not, write to the Free Software
277 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
280 Also add information on how to contact you by electronic and paper mail.
282 If the program is interactive, make it output a short notice like this
283 when it starts in an interactive mode:
285 Gnomovision version 69, Copyright (C) 19xx name of author
286 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
287 This is free software, and you are welcome to redistribute it
288 under certain conditions; type `show c' for details.
290 The hypothetical commands `show w' and `show c' should show the
291 appropriate parts of the General Public License. Of course, the
292 commands you use may be called something other than `show w' and `show
293 c'; they could even be mouse-clicks or menu items--whatever suits your
296 You should also get your employer (if you work as a programmer) or your
297 school, if any, to sign a "copyright disclaimer" for the program, if
298 necessary. Here a sample; alter the names:
300 Yoyodyne, Inc., hereby disclaims all copyright interest in the
301 program `Gnomovision' (a program to direct compilers to make passes
302 at assemblers) written by James Hacker.
304 <signature of Ty Coon>, 1 April 1989
305 Ty Coon, President of Vice
307 That's all there is to it!
310 --- Artistic --------------------------------------------------------------
312 The "Artistic License"
316 The intent of this document is to state the conditions under which a
317 Package may be copied, such that the Copyright Holder maintains some
318 semblance of artistic control over the development of the package,
319 while giving the users of the package the right to use and distribute
320 the Package in a more-or-less customary fashion, plus the right to make
321 reasonable modifications.
325 "Package" refers to the collection of files distributed by the
326 Copyright Holder, and derivatives of that collection of files
327 created through textual modification.
329 "Standard Version" refers to such a Package if it has not been
330 modified, or has been modified in accordance with the wishes
331 of the Copyright Holder as specified below.
333 "Copyright Holder" is whoever is named in the copyright or
334 copyrights for the package.
336 "You" is you, if you're thinking about copying or distributing
339 "Reasonable copying fee" is whatever you can justify on the
340 basis of media cost, duplication charges, time of people involved,
341 and so on. (You will not be required to justify it to the
342 Copyright Holder, but only to the computing community at large
343 as a market that must bear the fee.)
345 "Freely Available" means that no fee is charged for the item
346 itself, though there may be fees involved in handling the item.
347 It also means that recipients of the item may redistribute it
348 under the same conditions they received it.
350 1. You may make and give away verbatim copies of the source form of the
351 Standard Version of this Package without restriction, provided that you
352 duplicate all of the original copyright notices and associated disclaimers.
354 2. You may apply bug fixes, portability fixes and other modifications
355 derived from the Public Domain or from the Copyright Holder. A Package
356 modified in such a way shall still be considered the Standard Version.
358 3. You may otherwise modify your copy of this Package in any way, provided
359 that you insert a prominent notice in each changed file stating how and
360 when you changed that file, and provided that you do at least ONE of the
363 a) place your modifications in the Public Domain or otherwise make them
364 Freely Available, such as by posting said modifications to Usenet or
365 an equivalent medium, or placing the modifications on a major archive
366 site such as uunet.uu.net, or by allowing the Copyright Holder to include
367 your modifications in the Standard Version of the Package.
369 b) use the modified Package only within your corporation or organization.
371 c) rename any non-standard executables so the names do not conflict
372 with standard executables, which must also be provided, and provide
373 a separate manual page for each non-standard executable that clearly
374 documents how it differs from the Standard Version.
376 d) make other distribution arrangements with the Copyright Holder.
378 4. You may distribute the programs of this Package in object code or
379 executable form, provided that you do at least ONE of the following:
381 a) distribute a Standard Version of the executables and library files,
382 together with instructions (in the manual page or equivalent) on where
383 to get the Standard Version.
385 b) accompany the distribution with the machine-readable source of
386 the Package with your modifications.
388 c) give non-standard executables non-standard names, and clearly
389 document the differences in manual pages (or equivalent), together
390 with instructions on where to get the Standard Version.
392 d) make other distribution arrangements with the Copyright Holder.
394 5. You may charge a reasonable copying fee for any distribution of this
395 Package. You may charge any fee you choose for support of this
396 Package. You may not charge a fee for this Package itself. However,
397 you may distribute this Package in aggregate with other (possibly
398 commercial) programs as part of a larger (possibly commercial) software
399 distribution provided that you do not advertise this Package as a
400 product of your own. You may embed this Package's interpreter within
401 an executable of yours (by linking); this shall be construed as a mere
402 form of aggregation, provided that the complete Standard Version of the
403 interpreter is so embedded.
405 6. The scripts and library files supplied as input to or produced as
406 output from the programs of this Package do not automatically fall
407 under the copyright of this Package, but belong to whoever generated
408 them, and may be sold commercially, and may be aggregated with this
409 Package. If such scripts or library files are aggregated with this
410 Package via the so-called "undump" or "unexec" methods of producing a
411 binary executable image, then distribution of such an image shall
412 neither be construed as a distribution of this Package nor shall it
413 fall under the restrictions of Paragraphs 3 and 4, provided that you do
414 not represent such an executable image as a Standard Version of this
417 7. C subroutines (or comparably compiled subroutines in other
418 languages) supplied by you and linked into this Package in order to
419 emulate subroutines and variables of the language defined by this
420 Package shall not be considered part of this Package, but are the
421 equivalent of input as in Paragraph 6, provided these subroutines do
422 not change the language in any way that would cause it to fail the
423 regression tests for the language.
425 8. Aggregation of this Package with a commercial distribution is always
426 permitted provided that the use of this Package is embedded; that is,
427 when no overt attempt is made to make this Package's interfaces visible
428 to the end user of the commercial distribution. Such use shall not be
429 construed as a distribution of this Package.
431 9. The name of the Copyright Holder may not be used to endorse or promote
432 products derived from this software without specific prior written permission.
434 10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
435 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
436 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.