COPYING 18 KB

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  1. This program is free software; you can redistribute it and/or modify
  2. it under the terms of the GNU General Public License as published by
  3. the Free Software Foundation; either version 2 of the License, or
  4. (at your option) any later version.
  5. GNU GENERAL PUBLIC LICENSE
  6. Version 2, June 1991
  7. Copyright (C) 1989, 1991 Free Software Foundation, Inc.
  8. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  9. Everyone is permitted to copy and distribute verbatim copies
  10. of this license document, but changing it is not allowed.
  11. Preamble
  12. The licenses for most software are designed to take away your
  13. freedom to share and change it. By contrast, the GNU General Public
  14. License is intended to guarantee your freedom to share and change free
  15. software--to make sure the software is free for all its users. This
  16. General Public License applies to most of the Free Software
  17. Foundation's software and to any other program whose authors commit to
  18. using it. (Some other Free Software Foundation software is covered by
  19. the GNU Library General Public License instead.) You can apply it to
  20. your programs, too.
  21. When we speak of free software, we are referring to freedom, not
  22. price. Our General Public Licenses are designed to make sure that you
  23. have the freedom to distribute copies of free software (and charge for
  24. this service if you wish), that you receive source code or can get it
  25. if you want it, that you can change the software or use pieces of it
  26. in new free programs; and that you know you can do these things.
  27. To protect your rights, we need to make restrictions that forbid
  28. anyone to deny you these rights or to ask you to surrender the rights.
  29. These restrictions translate to certain responsibilities for you if you
  30. distribute copies of the software, or if you modify it.
  31. For example, if you distribute copies of such a program, whether
  32. gratis or for a fee, you must give the recipients all the rights that
  33. you have. You must make sure that they, too, receive or can get the
  34. source code. And you must show them these terms so they know their
  35. rights.
  36. We protect your rights with two steps: (1) copyright the software, and
  37. (2) offer you this license which gives you legal permission to copy,
  38. distribute and/or modify the software.
  39. Also, for each author's protection and ours, we want to make certain
  40. that everyone understands that there is no warranty for this free
  41. software. If the software is modified by someone else and passed on, we
  42. want its recipients to know that what they have is not the original, so
  43. that any problems introduced by others will not reflect on the original
  44. authors' reputations.
  45. Finally, any free program is threatened constantly by software
  46. patents. We wish to avoid the danger that redistributors of a free
  47. program will individually obtain patent licenses, in effect making the
  48. program proprietary. To prevent this, we have made it clear that any
  49. patent must be licensed for everyone's free use or not licensed at all.
  50. The precise terms and conditions for copying, distribution and
  51. modification follow.
  52. GNU GENERAL PUBLIC LICENSE
  53. TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  54. 0. This License applies to any program or other work which contains
  55. a notice placed by the copyright holder saying it may be distributed
  56. under the terms of this General Public License. The "Program", below,
  57. refers to any such program or work, and a "work based on the Program"
  58. means either the Program or any derivative work under copyright law:
  59. that is to say, a work containing the Program or a portion of it,
  60. either verbatim or with modifications and/or translated into another
  61. language. (Hereinafter, translation is included without limitation in
  62. the term "modification".) Each licensee is addressed as "you".
  63. Activities other than copying, distribution and modification are not
  64. covered by this License; they are outside its scope. The act of
  65. running the Program is not restricted, and the output from the Program
  66. is covered only if its contents constitute a work based on the
  67. Program (independent of having been made by running the Program).
  68. Whether that is true depends on what the Program does.
  69. 1. You may copy and distribute verbatim copies of the Program's
  70. source code as you receive it, in any medium, provided that you
  71. conspicuously and appropriately publish on each copy an appropriate
  72. copyright notice and disclaimer of warranty; keep intact all the
  73. notices that refer to this License and to the absence of any warranty;
  74. and give any other recipients of the Program a copy of this License
  75. along with the Program.
  76. You may charge a fee for the physical act of transferring a copy, and
  77. you may at your option offer warranty protection in exchange for a fee.
  78. 2. You may modify your copy or copies of the Program or any portion
  79. of it, thus forming a work based on the Program, and copy and
  80. distribute such modifications or work under the terms of Section 1
  81. above, provided that you also meet all of these conditions:
  82. a) You must cause the modified files to carry prominent notices
  83. stating that you changed the files and the date of any change.
  84. b) You must cause any work that you distribute or publish, that in
  85. whole or in part contains or is derived from the Program or any
  86. part thereof, to be licensed as a whole at no charge to all third
  87. parties under the terms of this License.
  88. c) If the modified program normally reads commands interactively
  89. when run, you must cause it, when started running for such
  90. interactive use in the most ordinary way, to print or display an
  91. announcement including an appropriate copyright notice and a
  92. notice that there is no warranty (or else, saying that you provide
  93. a warranty) and that users may redistribute the program under
  94. these conditions, and telling the user how to view a copy of this
  95. License. (Exception: if the Program itself is interactive but
  96. does not normally print such an announcement, your work based on
  97. the Program is not required to print an announcement.)
  98. These requirements apply to the modified work as a whole. If
  99. identifiable sections of that work are not derived from the Program,
  100. and can be reasonably considered independent and separate works in
  101. themselves, then this License, and its terms, do not apply to those
  102. sections when you distribute them as separate works. But when you
  103. distribute the same sections as part of a whole which is a work based
  104. on the Program, the distribution of the whole must be on the terms of
  105. this License, whose permissions for other licensees extend to the
  106. entire whole, and thus to each and every part regardless of who wrote it.
  107. Thus, it is not the intent of this section to claim rights or contest
  108. your rights to work written entirely by you; rather, the intent is to
  109. exercise the right to control the distribution of derivative or
  110. collective works based on the Program.
  111. In addition, mere aggregation of another work not based on the Program
  112. with the Program (or with a work based on the Program) on a volume of
  113. a storage or distribution medium does not bring the other work under
  114. the scope of this License.
  115. 3. You may copy and distribute the Program (or a work based on it,
  116. under Section 2) in object code or executable form under the terms of
  117. Sections 1 and 2 above provided that you also do one of the following:
  118. a) Accompany it with the complete corresponding machine-readable
  119. source code, which must be distributed under the terms of Sections
  120. 1 and 2 above on a medium customarily used for software interchange; or,
  121. b) Accompany it with a written offer, valid for at least three
  122. years, to give any third party, for a charge no more than your
  123. cost of physically performing source distribution, a complete
  124. machine-readable copy of the corresponding source code, to be
  125. distributed under the terms of Sections 1 and 2 above on a medium
  126. customarily used for software interchange; or,
  127. c) Accompany it with the information you received as to the offer
  128. to distribute corresponding source code. (This alternative is
  129. allowed only for noncommercial distribution and only if you
  130. received the program in object code or executable form with such
  131. an offer, in accord with Subsection b above.)
  132. The source code for a work means the preferred form of the work for
  133. making modifications to it. For an executable work, complete source
  134. code means all the source code for all modules it contains, plus any
  135. associated interface definition files, plus the scripts used to
  136. control compilation and installation of the executable. However, as a
  137. special exception, the source code distributed need not include
  138. anything that is normally distributed (in either source or binary
  139. form) with the major components (compiler, kernel, and so on) of the
  140. operating system on which the executable runs, unless that component
  141. itself accompanies the executable.
  142. If distribution of executable or object code is made by offering
  143. access to copy from a designated place, then offering equivalent
  144. access to copy the source code from the same place counts as
  145. distribution of the source code, even though third parties are not
  146. compelled to copy the source along with the object code.
  147. 4. You may not copy, modify, sublicense, or distribute the Program
  148. except as expressly provided under this License. Any attempt
  149. otherwise to copy, modify, sublicense or distribute the Program is
  150. void, and will automatically terminate your rights under this License.
  151. However, parties who have received copies, or rights, from you under
  152. this License will not have their licenses terminated so long as such
  153. parties remain in full compliance.
  154. 5. You are not required to accept this License, since you have not
  155. signed it. However, nothing else grants you permission to modify or
  156. distribute the Program or its derivative works. These actions are
  157. prohibited by law if you do not accept this License. Therefore, by
  158. modifying or distributing the Program (or any work based on the
  159. Program), you indicate your acceptance of this License to do so, and
  160. all its terms and conditions for copying, distributing or modifying
  161. the Program or works based on it.
  162. 6. Each time you redistribute the Program (or any work based on the
  163. Program), the recipient automatically receives a license from the
  164. original licensor to copy, distribute or modify the Program subject to
  165. these terms and conditions. You may not impose any further
  166. restrictions on the recipients' exercise of the rights granted herein.
  167. You are not responsible for enforcing compliance by third parties to
  168. this License.
  169. 7. If, as a consequence of a court judgment or allegation of patent
  170. infringement or for any other reason (not limited to patent issues),
  171. conditions are imposed on you (whether by court order, agreement or
  172. otherwise) that contradict the conditions of this License, they do not
  173. excuse you from the conditions of this License. If you cannot
  174. distribute so as to satisfy simultaneously your obligations under this
  175. License and any other pertinent obligations, then as a consequence you
  176. may not distribute the Program at all. For example, if a patent
  177. license would not permit royalty-free redistribution of the Program by
  178. all those who receive copies directly or indirectly through you, then
  179. the only way you could satisfy both it and this License would be to
  180. refrain entirely from distribution of the Program.
  181. If any portion of this section is held invalid or unenforceable under
  182. any particular circumstance, the balance of the section is intended to
  183. apply and the section as a whole is intended to apply in other
  184. circumstances.
  185. It is not the purpose of this section to induce you to infringe any
  186. patents or other property right claims or to contest validity of any
  187. such claims; this section has the sole purpose of protecting the
  188. integrity of the free software distribution system, which is
  189. implemented by public license practices. Many people have made
  190. generous contributions to the wide range of software distributed
  191. through that system in reliance on consistent application of that
  192. system; it is up to the author/donor to decide if he or she is willing
  193. to distribute software through any other system and a licensee cannot
  194. impose that choice.
  195. This section is intended to make thoroughly clear what is believed to
  196. be a consequence of the rest of this License.
  197. 8. If the distribution and/or use of the Program is restricted in
  198. certain countries either by patents or by copyrighted interfaces, the
  199. original copyright holder who places the Program under this License
  200. may add an explicit geographical distribution limitation excluding
  201. those countries, so that distribution is permitted only in or among
  202. countries not thus excluded. In such case, this License incorporates
  203. the limitation as if written in the body of this License.
  204. 9. The Free Software Foundation may publish revised and/or new versions
  205. of the General Public License from time to time. Such new versions will
  206. be similar in spirit to the present version, but may differ in detail to
  207. address new problems or concerns.
  208. Each version is given a distinguishing version number. If the Program
  209. specifies a version number of this License which applies to it and "any
  210. later version", you have the option of following the terms and conditions
  211. either of that version or of any later version published by the Free
  212. Software Foundation. If the Program does not specify a version number of
  213. this License, you may choose any version ever published by the Free Software
  214. Foundation.
  215. 10. 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.
  222. NO WARRANTY
  223. 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
  224. FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
  225. OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
  226. PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
  227. OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  228. MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
  229. TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
  230. PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
  231. REPAIR OR CORRECTION.
  232. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
  233. WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
  234. REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
  235. INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
  236. OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
  237. TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
  238. YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
  239. PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
  240. POSSIBILITY OF SUCH DAMAGES.
  241. END OF TERMS AND CONDITIONS
  242. How to Apply These Terms to Your New Programs
  243. If you develop a new program, and you want it to be of the greatest
  244. possible use to the public, the best way to achieve this is to make it
  245. free software which everyone can redistribute and change under these terms.
  246. To do so, attach the following notices to the program. It is safest
  247. to attach them to the start of each source file to most effectively
  248. convey the exclusion of warranty; and each file should have at least
  249. the "copyright" line and a pointer to where the full notice is found.
  250. <one line to give the program's name and a brief idea of what it does.>
  251. Copyright (C) <year> <name of author>
  252. This program is free software; you can redistribute it and/or modify
  253. it under the terms of the GNU General Public License as published by
  254. the Free Software Foundation; either version 2 of the License, or
  255. (at your option) any later version.
  256. This program is distributed in the hope that it will be useful,
  257. but WITHOUT ANY WARRANTY; without even the implied warranty of
  258. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  259. GNU General Public License for more details.
  260. You should have received a copy of the GNU General Public License
  261. along with this program; if not, write to the Free Software
  262. Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  263. Also add information on how to contact you by electronic and paper mail.
  264. If the program is interactive, make it output a short notice like this
  265. when it starts in an interactive mode:
  266. Gnomovision version 69, Copyright (C) year name of author
  267. Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
  268. This is free software, and you are welcome to redistribute it
  269. under certain conditions; type `show c' for details.
  270. The hypothetical commands `show w' and `show c' should show the appropriate
  271. parts of the General Public License. Of course, the commands you use may
  272. be called something other than `show w' and `show c'; they could even be
  273. mouse-clicks or menu items--whatever suits your program.
  274. You should also get your employer (if you work as a programmer) or your
  275. school, if any, to sign a "copyright disclaimer" for the program, if
  276. necessary. Here is a sample; alter the names:
  277. Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  278. `Gnomovision' (which makes passes at compilers) written by James Hacker.
  279. <signature of Ty Coon>, 1 April 1989
  280. Ty Coon, President of Vice
  281. This General Public License does not permit incorporating your program into
  282. proprietary programs. If your program is a subroutine library, you may
  283. consider it more useful to permit linking proprietary applications with the
  284. library. If this is what you want to do, use the GNU Library General
  285. Public License instead of this License.